CN1465764A - Drying controller and control method for drying machine - Google Patents
Drying controller and control method for drying machine Download PDFInfo
- Publication number
- CN1465764A CN1465764A CNA021211612A CN02121161A CN1465764A CN 1465764 A CN1465764 A CN 1465764A CN A021211612 A CNA021211612 A CN A021211612A CN 02121161 A CN02121161 A CN 02121161A CN 1465764 A CN1465764 A CN 1465764A
- Authority
- CN
- China
- Prior art keywords
- drying
- sensor
- oven dry
- control
- dryer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a drying control device of drying machine and its control method. Said invention includes sensor mounted in the drying container, control portion connected with the sensor, heater controlled by control portion and pressure fan, said sensor is a humidify sensor which is a bridge circuit formed from a thermistor which is opened for air flow, a thermistor which is closed for air flow, a fixed resistor and a variable resistor, and the described control portion can be connected with input portion with selective signal. Said invention sensor can accurately determine the absolute temperature of dried clothing so as to control the dried extent of dried clothing in the drying machine accurately and can raise the performance of drying machine.
Description
Technical field
The present invention relates to a kind of dryer, relate in particular to a kind of oven dry control device and control method of dryer.
Background technology
One of household appliances that are easy to see in general family are exactly washing machine.In the washing machine of up-to-date product, increased drying function again to realize multi-functional compoundization.This washing machine or the dryer that possesses drying function is by after utilizing heater with air heat, controls it and circulates in the cylinder of washings is housed and realize the control of the oven dry of washings action.
Please refer to Fig. 1 to understand the structure and the operation process of existing dryer.
Fig. 1 is the pie graph of common dryer.As shown in the figure, exterior case (1) forms the face shaping of dryer; Front panel (3) is installed in the front of the end formation dryer of exterior case (1).
Be equipped with the washings input wherein and the rotatable cylinder (5) of drying the inside of exterior case (1), in cylinder (5) inside several stirring wings (6) is arranged, and stirring wing (6) plays the agitator treating thing when cylinder (5) rotates.This cylinder (5) is to rotate under the effect of the drum driven belt (7) on its outer ring.And the drum driven belt (7) here is to drive by other drive source.
Can make the inside of cylinder and the door of external communications (8) selectively, can the switching mode being installed on the front panel (3) of the front end of cylinder.On the position of the inside of corresponding front panel (3), form exhaust outlet (10) towards cylinder (5) inside opening, this exhaust outlet (10) has the air that cylinder (5) is inner and is discharged to the outside effect of cylinder (5), and its porch is equipped with and is used for removing the filter (12) that is mingled in airborne foreign matter.
Side at described exhaust outlet (10) is equipped with the preceding utmost point sensor (30) that is used for measuring cylinder (5) temperature inside in the oven dry action when carrying out, should preceding utmost point sensor (30) be temperature sensor, the voltage difference that utmost point two ends produced before when contacting with washings and sense temperature, and perceptual signal exported with the voltage signal form.
The inboard of plate (3) forms the air exhaust passage (13) that is connected with exhaust outlet (10) in front, the continuous earthing of air exhaust passage is equipped with pressure fan assembly (15), is connected with the exhaust duct (17) that the air of being discharged by air exhaust passage (13) can be discharged to the dryer outside on the pressure fan assembly (15).
In addition, the blast pipe (18) to cylinder (5) delivered inside air is installed on the position of the bottom of the respective rollers (5) of the inside of casing (1) externally, blast pipe (18) is carried air by the rear of cylinder (5) in cylinder (5).Side at this blast pipe (18) is equipped with heater (19).
Below, the course of action of the air circulation of carrying out in order to realize drying purpose in constituting aforesaid existing dryer is illustrated.
At first door (8) is opened, the washings of needs oven dry is put into cylinder (5).After door (8) shut, if input oven dry actuating signal, then cylinder (5) began rotation under the effect of drive source.In addition, pressure fan assembly (15) begins action, and the air in the cylinder (5) is arranged to above-mentioned exhaust duct (17).
If the inner air of cylinder (5) is discharged from, air outside will be drawn onto in the cylinder (5) by blast pipe (18) so, and this air to be the heater (19) that is positioned at blast pipe (18) porch heat and reach uniform temperature after be transported in the cylinder (5).
Be transported to the moisture in the inner absorption of air washings of cylinder (5), flow to air exhaust passage (13) by exhaust outlet (10) under the driving of pressure fan assembly (15), air is discharged to the outside by pressure fan assembly (15) via exhaust duct (17) in air exhaust passage (13) again.
Here, the air of the exhaust outlet of flowing through (10) is cleaned under the effect of filter (12), and this process has played not make mixes aerial foreign matter (as the end of a thread of washings, fine hair etc.) and enter the effect in the pressure fan assembly (15).
In addition, in the control part (not shown), the value of measuring of preceding utmost point sensor (30) kind and the degree of drying according to the oven dry thing configured.Therefore the value of measuring that configures according to the kind of drying thing when oven dry action beginning is discerned for the basis, and control heater (19) action makes it heating.Be inhaled into heater (19) heating that the inner outer air of cylinder (5) is positioned at the porch of blast pipe (18) by blast pipe (18), be transported in the cylinder (5) after reaching uniform temperature.
Air by this action under the state of cylinder (5) inner loop, the temperature of preceding utmost point sensor (30) perception oven dry thing, and the signal that the perceives form with voltage signal transmitted to control part.Here, preceding utmost point sensor (30) is to utilize the sensor to touch voltage difference that oven dry produces at the preceding utmost point two ends during thing and sense temperature, and with the form output with voltage signal of the temperature that perceives.
Before the perception value of utmost point sensor (30) import control part constantly, the variation of the voltage value that control part can be perceived according to preceding utmost point sensor (30) is judged by the degree of drying of baking thing.
But there are following problems in the oven dry control device of existing dryer.
The perception value of utmost point sensor is that different degree of dryings is realized on the basis before the control device of existing dryer.Promptly when oven dry when just having begun,, therefore have no problem in the control realizing because voltage difference is bigger in the detected perception value of preceding utmost point sensor.When aridity rises to 80% when above, the missionary society by the detected sense voltage of preceding utmost point sensor diminishes but as shown in Figure 2.
Promptly as shown in Figure 2, the value of being come out according to temperature detection by preceding utmost point sensor (30) is converted into voltage input control part, and control part is judged degree of drying according to the variation of the voltage value of input.But diminish from the missionary society that to a certain degree begins detected voltage value, therefore have the significantly reduced problem of resolving power of final feasible preceding utmost point sensor.
Summary of the invention
Rise to the certain value trickle temperature contrast of perception difficulty relatively when above at utmost point sensor before employed in the existing dryer at degree of drying, and will finally bring the too high or too low problem of degree of drying of oven dry thing; The objective of the invention is to design and provide a kind of oven dry control device and control method of dryer,, improve the performance of dryer with the degree of drying of oven dry thing in the accurate control dryer.
To achieve these goals, the present invention adopts following design: a kind of oven dry control device of dryer comprises the control part and heater that is controlled by control part and the pressure fan that are located at the sensor of oven dry in the container, join with sensor; It is characterized in that described sensor is a humidity sensor, it is by thermistor, thermistor, a fixed resistance and the bridge circuit that variable resistor is formed to the air flow sealing that air flow is opened.Described control part can be connected to the user and select signal input part.Just can measure humidity value and control oven dry operation according to the difference signal of two thermistors.
The control method of dryer of the present invention, thus it is characterized in that it comprise identification according to setting value stage of the humidity sensor of the kind of washings and degree of drying, read humidity sensor now the value of measuring the value of measuring of now of stage, comparison humidity sensor judge degree of drying and control oven dry stage with the action of heater ON/OFF.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the pie graph of common dryer
Fig. 2 is the perception oscillogram when utmost point sensor is realized the oven dry action before utilizing in the prior art
Fig. 3 is the oven dry control device pie graph of dryer of the present invention
Fig. 4 is the pie graph of the humidity sensor that uses among the present invention
Perception oscillogram when Fig. 5 realizes the oven dry action for utilizing humidity sensor among the present invention
The specific embodiment
Oven dry control device to dryer of the present invention is described in detail with reference to the accompanying drawings.
Fig. 3 is the pie graph of the oven dry control device of dryer of the present invention.The internal structure of required dryer is illustrated with reference to Fig. 1 during in addition for explanation.
The feature of the oven dry control device of dryer of the present invention is the humidity sensor (50) that has adopted as the Back ground Information of the control oven dry action that detects usefulness.Described humidity sensor (50) is installed in and is easy to perceive on the pressure fan casing position of humidity.Being formed among Fig. 4 in detail of the humidity sensor that is adopted among the present invention (50) illustrated.
In addition, the present invention also comprises the control part (52) of controlling optimal oven dry action according to the selected drying condition of user, and the kind (kind of clothing) and the humidity value of degree of drying of all that might select in the product being dried things in this control part (52) are pre-set.Action will set value when carrying out and the detection signal of humidity sensor (50) compares when drying, thereby the control oven dry is moved.
Particularly the value of measuring of the humidity sensor (50) that constitutes with two thermistors in the present invention serve as that basis control is dried and moved.Shown in the image pattern 5 to measure oscillogram the same, above-mentioned control part (52) is to utilize the size of poor (Gap) between two thermistor values of measuring to judge degree of drying.In addition, the number of times that utilizes described extent and reach maximum temperature waits and judges that whether oven dry finish.Promptly this control part (52) serves as basis control oven dry action with these data according to the data of the kind storage oscillogram as shown in Figure 5 of oven dry thing again.
Can also be connected to the signal input part (54) of input user's selection signal in addition, the selection signal of described signal input part (54) is exported to this control part (52).Above-mentioned signal input part (54) will be exported to above-mentioned control part (52) for the diversified condition of the drying effect of realizing optimum state according to the kind of oven dry thing.Heater (19) then is driven along with the oven dry action under the control of control part (52).
Fig. 4 is the detailed circuit diagram of humidity sensor of the present invention.
The bridge circuit that humidity sensor among the present invention is made up of two thermistors (60,62) and a fixed resistance (64) and variable resistor (66).In constituting aforesaid bridge circuit, with perception humidity, another thermistor is then to the air flow sealing and the only variation of sense temperature to the air flow opening for thermistor.Therefore the thermistor that opens in the metal chassis in the atmosphere is the sensor element that perception humidity is used, and the interior thermistor of metal chassis that is installed in sealing is the sensor element that temperature-compensating is used.
Constitute variable resistor (66) value is changed so that the voltage at bridge circuit two ends is identical, do not have electric current to flow in the circuit thereby make.Afterwards, when around humidity along with the carrying out of oven dry when changing because the thermistor that changes in the air is externally arranged in the composed component and the environment of the sealing isolated with extraneous air in thermistor, so its resistance value can change.Because the above-mentioned bridge circuit of this variation can produce the voltage signal that changes with ambient humidity, light and temperature.
Promptly open at the influence that thermistor in the surrounding enviroment can be subjected to humidity, sealed up thermistor only is subjected to Temperature Influence.Therefore the difference of the value of measuring of two thermistors is detected is absolute humidity in the atmosphere.
Dry control procedure to dryer of the present invention is illustrated below.
In dryer of the present invention, in order to realize control to drying course, in the control part (52) kind and the degree of drying according to the washings of need oven dry the possible detected humidity value shown in the image pattern 5 has been configured.
The user select to be fit to the oven dry action of desirable condition by signal input part (54), as long as selected signal input control part (52), the drying that control part (52) just can be controlled Realization by Machine and the condition imported adapts is moved so.
At first, control part (52) is according to the kind of the selected drying condition of user identification washings, and control part (52) configured according to the kind identification of the washings that identifies with the corresponding humidity value of degree of drying.Described numerical value can change its size along with the carrying out of oven dry.
Control part (52) synthetical collection to signal come control heater (19).On the one hand, air outside is inhaled into cylinder (5) inside by blast pipe (18), and air be heated under the effect of the heater (19) of the porch that is positioned at blast pipe (18) and reach certain temperature after be transported to cylinder (5).
Be transported to air in the cylinder (5) and can absorb moisture in the washings and mobile and be discharged to the outside by exhaust outlet (10) under the driving of pressure fan assembly (15) via exhaust duct (17) to air exhaust passage (13).
Under the state that this air circulation action is carried out, the washings that is contained in the cylinder (5) is dried.At this moment control part (52) is according to the ON/OFF at the drying condition control heater (19) of drying when beginning action identification, thus the inner drying action of index drum (5).
In addition, in the process that oven dry is carried out, the amount of moisture that is included in the circulating air can produce difference, and humidity sensor (50) can detect this species diversity; As mentioned above, in humidity sensor (50), be subjected to moisture and Temperature Influence, thereby and another thermistor is closed in air flow only is subjected to Temperature Influence thereby a thermistor opens at air flow.
In constituting aforesaid humidity sensor (50), the resistance value of two thermistors can change along with the variation of the humidity of surrounding environment in the process that washings is dried.At this moment the balance of voltage of bridge circuit is broken, and can produce electric current and be imported into control part (52) with the form of voltage signal at the output of the humidity sensor (50) that constitutes with above-mentioned bridge circuit form.
Described control part (52) has to be closed in the detected next signal of airborne thermistor and to open at the detected next signal of airborne thermistor to be imported wherein, and it also calculates the difference signal of two signals.Promptly calculate the signal of difference of the value of measuring of two thermistors shown in Fig. 5.Be identified as cylinder (5) humidity inside amount signal through the difference signal that draws like this.
In addition, control part (52) utilizes difference signal and the judgements such as number of times that reach maximum temperature to dry the time point of finishing after the detected humidity amount of humidity sensor (50) (difference signal) reaches certain value.
Therefore the present invention can prevent the incorrect phenomenon of detected signal owing to judge that according to the size of the humidity sensor of above-mentioned two thermistors formation detected poor (Gap) the humidity amount is a degree of drying.
The present invention can obtain following effect:
The first, the present invention is owing to utilize the difference signal of the detected signal of two thermistors to judge current ongoing degree of drying, therefore can be according to detected signal poor accurately, oven dry action beginning is certainly controlled accurately to finishing.
The second, the present invention can prevent that the dry or undried phenomenon of transition from appearring in washings by the control accurately to the drying action, thereby improves the satisfaction of consumer to product by adjusting best oven-dried condition.
Claims (3)
1, a kind of oven dry control device of dryer comprises the control part and heater that is controlled by control part and the pressure fan that are located at the sensor of oven dry in the container, join with sensor; It is characterized in that described sensor is a humidity sensor, it is by thermistor, thermistor, a fixed resistance and the bridge circuit that variable resistor is formed to the air flow sealing that air flow is opened.
2, the oven dry control device of dryer according to claim 1 is characterized in that described control part can be connected to the user and select signal input part.
3, a kind of control method of dryer as claimed in claim 1 or 2, it is characterized in that it comprise identification according to setting value stage of the humidity sensor of the kind of washings and degree of drying, read humidity sensor now the value of measuring value of measuring and setting value of now of stage, comparison humidity sensor, thereby judge degree of drying and control oven dry stage with the action of heater ON/OFF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021211612A CN100383313C (en) | 2002-06-11 | 2002-06-11 | Drying controller and control method for drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021211612A CN100383313C (en) | 2002-06-11 | 2002-06-11 | Drying controller and control method for drying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1465764A true CN1465764A (en) | 2004-01-07 |
| CN100383313C CN100383313C (en) | 2008-04-23 |
Family
ID=34142138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021211612A Expired - Fee Related CN100383313C (en) | 2002-06-11 | 2002-06-11 | Drying controller and control method for drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100383313C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978887A (en) * | 2006-04-14 | 2013-03-20 | Lg电子株式会社 | Dryer and controlling method thereof |
| CN105671858A (en) * | 2015-01-04 | 2016-06-15 | 海信（山东）冰箱有限公司 | Control method of drum type washing machine and drum type washing machine |
| CN105671916A (en) * | 2014-12-08 | 2016-06-15 | Lg电子株式会社 | Controlling method for air discharging type clothes drier |
| US9976242B2 (en) | 2014-12-08 | 2018-05-22 | Lg Electronics Inc. | Clothes treating apparatus with a heat pump cycle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51109556A (en) * | 1975-03-24 | 1976-09-28 | Hitachi Ltd | |
| DE3744559A1 (en) * | 1986-12-30 | 1988-07-14 | Samsung Electronics Co Ltd | CONTROL CIRCUIT FOR A DISHWASHER |
| JPH02257998A (en) * | 1989-03-30 | 1990-10-18 | Sanyo Electric Co Ltd | Sensor output amplifying circuit for clothes dryer |
| US5105555A (en) * | 1990-01-11 | 1992-04-21 | Shoji Nakagomi | Plastic drying apparatus |
| CN1053518A (en) * | 1991-02-22 | 1991-07-31 | 大连发电总厂 | A kind of temperature difference control type automatic drying device of electric machine |
-
2002
- 2002-06-11 CN CNB021211612A patent/CN100383313C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978887A (en) * | 2006-04-14 | 2013-03-20 | Lg电子株式会社 | Dryer and controlling method thereof |
| US9657433B2 (en) | 2006-04-14 | 2017-05-23 | Lg Electronics Inc. | Dryer and controlling method thereof |
| CN105671916A (en) * | 2014-12-08 | 2016-06-15 | Lg电子株式会社 | Controlling method for air discharging type clothes drier |
| US9745690B2 (en) | 2014-12-08 | 2017-08-29 | Lg Electronics Inc. | Exhaust type clothes dryer and method for controlling an exhaust type clothes dryer |
| CN105671916B (en) * | 2014-12-08 | 2018-05-08 | Lg电子株式会社 | The control method of exhaust cloth drying machine |
| US9976242B2 (en) | 2014-12-08 | 2018-05-22 | Lg Electronics Inc. | Clothes treating apparatus with a heat pump cycle |
| CN105671858A (en) * | 2015-01-04 | 2016-06-15 | 海信（山东）冰箱有限公司 | Control method of drum type washing machine and drum type washing machine |
| CN105671858B (en) * | 2015-01-04 | 2018-02-23 | 海信（山东）冰箱有限公司 | The control method and roller washing machine of a kind of roller washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100383313C (en) | 2008-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070251118A1 (en) | Dryer and method for controlling the same | |
| KR910002190B1 (en) | Clothing drying control system | |
| US9091014B2 (en) | Clothing dryer and control method thereof | |
| AU2014253302B2 (en) | Method for controlling a motor of a laundry dryer | |
| US20070251119A1 (en) | Dryer and control method thereof | |
| US20130145642A1 (en) | Clothing dryer and control method thereof | |
| US20070039200A1 (en) | Drying apparatus | |
| CN103741438A (en) | Dryer motor and control | |
| JP2004519305A (en) | Dryer heater control device and control method thereof | |
| CN1465764A (en) | Drying controller and control method for drying machine | |
| AU2011335141A1 (en) | Rotatable-drum laundry drier and method of controlling a rotatable-drum laundry drier | |
| US7353624B2 (en) | Clothing drying machine and method for sensing dryness level using the same | |
| CN1217134C (en) | Microwave oven | |
| CN103676994B (en) | Dehumidifying circuit and electric equipment and dehumanization method, electric steamer | |
| CN1518618A (en) | Dryness measurement device | |
| CN1727564A (en) | Drying control method for clothings drier | |
| CN216482139U (en) | Baffle structure, wind channel, drying equipment, drying system | |
| KR20200105026A (en) | Dryer and method for controlling the same | |
| KR20020076590A (en) | Method and device for control in drying apparatus | |
| CN1141514C (en) | Multifunction microwave device | |
| KR0141778B1 (en) | A clothing dryer | |
| CN106939489B (en) | Clothes treating device | |
| RU2471027C2 (en) | Domestic electrical appliance | |
| KR20020060350A (en) | The revolution control method for a dryer | |
| KR940006251B1 (en) | Drying time control apparatus for clothes dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20100611 |