CN102140756B - A kind of method of dryer auto-drying clothing - Google Patents
A kind of method of dryer auto-drying clothing Download PDFInfo
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Abstract
The invention provides a kind of method of dryer auto-drying clothing, the method comprises as the next stage from process: the first stage: the judgement of load; Second stage: the heating, drying process of load; Phase III: system is in conjunction with the temperature characterisitic of load, and humidity characteristic carries out judging and the heating, drying process of control load to the dryness level of load; Fourth stage: the cooling stage of load.Furnace drying method disclosed in this invention can overcome specific program in prior art dry the thick and heavy clothing such as defect and summer cool quilt of specific clothing cannot the problem of auto-drying, realize common programs and really accurately dry various conventional clothing function, the method can also realize the accurate auto-drying of the thick and heavy clothing such as towelling coverlet, summer cool quilt in addition.
Description
Technical field
The present invention relates to a kind of clothes-drying method of dryer, particularly relate to a kind of method of dryer auto-drying clothing.
Background technology
What traditional dryer mode of heating adopted substantially is two groups of electric heater units, makes its break-make to select, controls the temperature height of watt level and control drying by the button on operation control panel.If the power selected is large, then power consumption is many, and drying temperature is high, fragile clothing; The little drying time that can make again of power selected is long.Thus there is power selection scope little, cannot variably select required power and temperature in clothes drying process.The time controling of drying is all again adopt timer arrangement, needs user to estimate drying time according to situations oneself such as the Different Weight of clothing, quality and moisture.Drying time is selected short, and clothing is not done, and needs executable operations again; Selection of time has been grown, and clothing overdrying can produce high temperature, infringement clothing, and power consumption is many, and drying efficiency is low.So the major defect of traditional dryer is that power and temperature are wayward, drying efficiency is low, cannot according to degree of drying autostop.
In recent years, in some high-grade dryers, adopt humidity sensor measurement to discharge the humidity of air, according to humidity, judge the oven dry degree of dried object, thus realize autostop control.As existing part dryer utilize be arranged on the metal shifting block that insulate in cylinder by with contact with clothing, measure its resistance value to judge the dry wet degree of clothing, control autostop with this.
Chinese patent CN1503864A, application number 02803828.2, a kind of device in order to detect aridity in air exhaust dryer of disclosure of the invention that denomination of invention is " detect device dry in air exhaust dryer and use its control method " and use the control method of this device, comprise based on the Humidity Detection clothes drying state of clothing in drum electrode sensor and detect the thermistor of the temperature of air when drying clothes is got rid of.By comparing the operation of clothes drying state and deaeration temperature control dryer.These apparatus and method improve efficiency and the performance of air exhaust dryer to a certain extent, but to be specific program effective for specific clothing for this way, as invalid in towelling coverlet etc. for thick and heavy clothing.
The dryness level that a kind of conventional dryer uses electrode sensor and thermal resistor sensing clothing is disclosed during No. 2002-62446th, Korean Patent is open.The voltage of the principle sensing that electrode sensor increases according to voltage during the contact with clothing metallic plate washed utilized when high humility determines the dryness level of clothing, and the principle that thermal resistor utilizes resistance to change according to the change of temperature makes the oven dry of clothing be controlled.That is, thermal resistor determines the dryness level of clothing by the temperature of the air of sensing from drum discharge to outside.When the drums inside rear drive drive electrode of dryer and heater will be provided to by the clothing of drying and start drying operation, the temperature of the air discharged after thermal resistor sensing clothes drying, the oven-dried condition value of this clothing in electrode sensor sensing roller.
During oven dry, the temperature of air and the upper and lower bound value control heater of predetermined temperature is discharged by comparing, namely when air themperature is higher than the higher limit of predetermined temperature, control unit stops the work of heater, when air themperature is lower than the lower limit of predetermined temperature, control unit heater, above-mentioned steps repeats until the oven-dried condition value sensing clothing is greater than preset value, can determine that the oven dry of clothing completes and drying operation terminates.
Use said method drying clothes, when the temperature of air reaches the predetermined upper limit and thermal resistor starts its control operation, clothing is by suitable oven dry.Therefore, above-mentioned furnace drying method cannot realize user and wants to make clothing have the situation of more residual moisture.If use the voltage value being input to electrode sensor to determine the dryness level of clothing in addition, namely voltage value this moment can fluctuate very large, therefore, is difficult to the dryness level of accurate sense clothing.In addition the method can only accurately dry specific clothing at specific program, and a program can not be used accurately to dry various clothing, as cowboy, shirt, bath towel, underwear, pillowcase, sheet and mixing thereof etc., this furnace drying method does not have effect for thick and heavy clothings such as towelling coverlet, summer cool quilts, because after these thick and heavy clothing surface dryings, inside is also containing large quantity of moisture, the voltage serious distortion that it records.
Prior art discloses the algorithm of one " very dry ", the method after load reaches " generally doing ", add dry from dry to and dry the time that time of " generally doing " is multiplied by coefficient, namely judge that load reaches " very dry ".But this algorithm has major defect, because the time adding baking depends critically upon the initial aqueous rate of clothing, be therefore easy to the waste causing the energy.
In sum, existing automatic clothes dryer is only limitted to dry general general clothing, and the algorithm of its general procedure can only accomplish that specific program accurately dries specific clothing, and a program can not be used accurately to dry various clothing, as cowboy, shirt, bath towel, underwear, pillowcase, sheet and mixing etc. thereof, for woollen blanket, summer cool quilt can be washed, towelling coverlet can not realize good auto-drying, there is no special drying procedure, use during the clothings such as other program auto-drying towelling coverlets and there is the bad problem of oven dry, because the clothings such as towelling coverlet are thick and heavy especially, steam concentrates on clothing inside and can't get out, cause clothing surface dry and phenomenon that reality is not done, single means are relied on to judge to there will be erroneous judgement.There is the damp state in local after drying, then waste of manpower, material resources are dried in timing again.
In view of this, special proposition the present invention.
Summary of the invention
The object of the present invention is to provide a kind of method adopting humidity controller and temperature controller to realize various clothing auto-drying.In order to realize this goal of the invention, the present invention adopts following technological means:
A method for dryer auto-drying clothing, comprises as the next stage:
First stage: the judgement of load;
Second stage: the heating, drying process of load;
Phase III: system carries out judging and the heating, drying process of control load to the dryness level of load in conjunction with the temperature characterisitic of load, humidity characteristic;
Fourth stage: the cooling stage of load.
The judgement of described load comprises: after selecting suitable drying program and baking temperature, and start dryer, system does not start heating operation in 2min, directly carries out the presence or absence of load, dry wet judgement.
Described drying program comprises " commonly using " and " cotton-wadded quilt "; Described baking temperature comprises " high temperature ", " middle temperature " and " low temperature "; Described dryness level comprises " damp state ", " generally doing " and " very dry "; " damp state " the i.e. residual moisture content of load is 10%-16%; The residue water content " generally doing " i.e. load is 3%-5%; " very dry " the i.e. residue water content of load is 1%-3%.
Described dryness level judges, the moisture signal frequency of its end point is as follows:
" commonly use " program each dryness level end point moisture signal frequency: " damp state " is 1200Hz-1300Hz, and " generally doing " is 230Hz-260Hz, and " very dry " is 230Hz-260Hz; " cotton-wadded quilt " program each dryness level end point moisture signal frequency: " damp state ", " generally doing ", " very dry " are 150Hz-200Hz;
Preferably;
" commonly use " program each dryness level end point moisture signal frequency: " damp state " is 1250Hz, and " generally doing " is 245Hz, and " very dry " is 245Hz; " cotton-wadded quilt " program each dryness level end point moisture signal frequency: " damp state ", " generally doing ", " very dry " are 180Hz.
Described drying program is also provided with " moist alarm " function of applicable clothing flatiron, and after the degree of drying of clothing arrives preset level, dryer gives the alarm, and reminding user carries out flatiron operation.
The determination methods of described " very dry " is: the time that definition reaches " damp state " level is T1, and the time reaching " generally doing " level is T2, Δ T=T2-T1,
, after reaching " generally doing " level, the added-time dries Δ t, and system and automatic decision load reach " very dry " level, wherein,
for 0.2-0.5.
The judgement " commonly using " " damp state " level of program also comprises an auxiliary judgment method except according to except moisture signal frequency values, this auxiliary judgment method is: judge whether the ascensional range of load temperature reaches setting value T-target, T-target is 5 DEG C-7 DEG C, and preferred T-target is 6 DEG C.
The auxiliary judgment method of " damp state " level is: utilize NTC to sample to temperature each second, be a unit with every 10s, sum up on average to all temperature in 10s, mean value is designated as T1, the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn, setting value T-target is reached, level that system then judges that load reaches " damp state " when Tmax deducts Tmin.
In " cotton-wadded quilt " program, the judgement of each dryness level also comprises an auxiliary judgment method except according to except moisture signal frequency values, this auxiliary judgment method is: controlled humidity signal frequency is lower than 300Hz, and reaching temperature shelves higher limit can judge that load reaches specific dryness level for several times to make temperature, wherein, the judgement of " damp state " level is: controlled humidity signal frequency lower than 300Hz, and makes temperature reach temperature shelves higher limit for 1 time; The judgement " generally doing " level is: controlled humidity signal frequency is lower than 300Hz, and making temperature reach temperature shelves higher limit for 4 times, the judgement of " very dry " level is: the time that definition reaches " damp state " level is T1, and the time reaching " generally doing " level is T2, Δ T=T2-T1
, after reaching " generally doing " level, the added-time dries Δ t, and system and automatic decision load reach " very dry " level, wherein,
for 0.2-0.5.
The cooling stage of described load is: terminate drying operation, blow a cold wind over to dryer inner chamber, until the temperature of load is down to setting value, this setting value is 38 DEG C-45 DEG C, preferably 40 DEG C.
The oven dry of dryer can be divided into automatic drying and manually dry, the optional auto-drying program having multiple load of automatic drying usually, as be suitable for clothing " commonly using " program and be suitable for " cotton-wadded quilt " programs etc. of the thick and heavy clothings such as towelling coverlet class.User can select suitable drying procedure according to demand.The temperature of drying also has high, medium and low temperature third gear available.
The method that the present invention adopts humidity, temperature sensor is combined controls drying course.Namely bimetal strip adds the structure of NTC temperature sensor (temperature sensor that namely negative temperature coefficient is very large) to realize furnace drying method of the present invention.Be specially and place parallel bimetal strip at the air outlet of dryer, at the below laying temperature sensor of bonding jumper.Resistance value between parallel double bonding jumper changes with the humidity of load cloth, and resistance value is converted to frequency signal by the electronic circuit in dryer, determines the process of drying according to the change of frequency signal.In addition the present invention also can adopt other temperature sensors of the prior art and humidity sensor to combine and control drying program.
Furnace drying method provided by the invention comprises as the next stage from process: the first stage: after selecting suitable drying program, and start dryer, system does not start heating operation in 2min, directly carries out the presence or absence of load, dry wet judgement; Second stage: the heating, drying process of load; Phase III: system carries out judging and the heating, drying process of control load to the dryness level of load in conjunction with the temperature characterisitic of load, humidity characteristic; Fourth stage: terminate to dry, enter the cooling stage of load.
In addition, the first stage in the present invention, i.e. the judgement stage of load also can be other judgment mode, as started after dryer, system while startup heating operation, to load to have that it's too late dry wetly judges etc.
Control method of the present invention mainly comprises conventional kinds of laundry program (being called for short " commonly using "), thick and heavy clothing as the clothing programs such as summer cool quilt (being called for short " cotton-wadded quilt ") this two type from clothing Program Type, program of wherein " commonly using " is for drying conventional dissimilar clothing, as the situation of cowboy, shirt, bath towel, underwear, pillowcase, sheet and mixing thereof, " cotton-wadded quilt " program is for drying as towelling coverlet, summer cool quilt, the overcoat etc. in winter.
Unlike the prior art, the method disclosed in the present uses " commonly using " program just really can accomplish accurately to dry various conventional clothing as cowboy, shirt, bath towel, underwear, pillowcase, sheet and be mixed into default dryness level, dryness level has a tidal wave of state, general dry, very dry etc.And " commonly using " program of prior art can only dry specific clothing to good dryness level, as being all bath towel and the shirt of common load, original technology can not good discrimination, uses " commonly using " program bake drying difference on effect larger.In addition, " cotton-wadded quilt " disclosed in this invention program is a brand-new program, can realize the thick and heavy clothing of towelling coverlet class and accurately dry.
The critical process of this algorithm is the phase III.The dryness level classification procedure of this one-phase to be first system according to the humidity of load, temperature characterisitic judge whether to enter load, the object of this judgement accurately judges load characteristic, determines its degree of easily drying.Dryness level classification procedure is entered after judging load humidity, temperature characterisitic.The core of this dryness level classification procedure is the dryness level accurately judging load " damp state " and " generally doing ", on the basis of the dryness level accurately judging " damp state " and " generally doing ", introduce additional way and accurately can judge the dryness level that whether load reaches " very dry ".Prior art discloses the algorithm of one " very dry ", the method after load reaches " generally doing ", add dry from dry to and dry the time that time of " generally doing " is multiplied by coefficient, namely judge that load reaches " very dry ".But this algorithm has major defect, because the time adding baking depends critically upon the initial aqueous rate of clothing, be therefore easy to the waste causing the energy.As same 3kg drying clothes, moisture 3kg after drying is cleaned through A washing machine, B washing machine is cleaned and is dried rear moisture 2kg, both dry on same dryer, assuming that the time that " the generally doing " level of arrival spends respectively is 60min and 40min, adding baking coefficient is 0.4, then the baking time that adds that arriving " very dry " needs is 24min and 14min respectively.And oven dry algorithm disclosed in this invention, be multiplied by pre-determined factor by from " damp state " to the time of " generally doing "
, the time of gained is the required time from " generally doing " to " very dry ".What adopt due to this algorithm is relative time, it is the time from " damp state " (moisture content 20%) to " generally doing " (moisture content 3%), therefore no matter clothing initial aqueous is how many, this time be relative, determine, therefore stablize from " damp state " to the time of " generally doing ", what clothing reached " very dry " add, and the baking time is also just stable.
Bimetal strip humidity sample circuit as shown in Figure 1, wherein WEN1/WEN2 connects bimetal strip, 1 termination control chip (CPU).The moisture signal that this circuit is derived, (be equivalent to wet cloth) during WEN1, WEN2 short circuit, 1 end signal shakes at 2200Hz-2300Hz, and during WEN1, WEN2 open circuit (being equivalent to dry cloth or empty bucket), 1 end signal is between 140Hz-230Hz.By the setting to electronic circuit, the frequency signal of wet cloth is generally at about 2000Hz, and the frequency signal of dry cloth is between 200Hz-250Hz, and during empty bucket, frequency signal is less than 200Hz.
When user uses, first switch on power, after selecting suitable drying program, baking temperature and dryness level, system enters first stage and the load judgment stage of drying operation, in front 2min, system does not start heating unit, the moisture signal first gathering 1 end judge load to have that it's too late dry wet.If front 2min moisture signal frequency values average is less than 250Hz, and maximum is less than 500Hz, then think empty bucket or dry cloth, directly enter done state.When moisture signal frequency is greater than 250hz, then enter second stage.
Drying course was made up of two stages: heating period 1 and heating period 2, these two stages are distinguished by humidity value, (now general load moisture signal is about 1500Hz to be about 20% when humidity level reaches moisture content, textile thick towel is about 700Hz, summer cool quilt, towelling coverlet are about 300Hz) time, exit the heating period 1, enter the heating period 2.
In drying course, the every 0.4s of humidity sensor gathers a humidity data.Computer board obtains the humidity value for judging after processing the humidity data collected.Simultaneously control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and in time stablizing lower than temperature range lower limit, two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After temperature reaches intermediate value, an only heater strip energising.When temperature is elevated to the upper limit time, two heater strip power-off simultaneously, until temperature drops to intermediate value, now control a heater strip energising again, until temperature drops to lower limit, and two heater strips break-make simultaneously.Circulate with this, until drying course terminates.Its control temperature value range of different temperatures shelves is in table 1:
The control temperature value range of table 1 different temperatures shelves
| Temperature is arranged | Control temperature scope (lower limit, intermediate value, the upper limit) (DEG C) |
| High temperature | 50-54-59 |
| Middle temperature | 45-50-54 |
| Low temperature | 39-45-50 |
In addition, when user selects timing routine to carry out drying clothes, also above-mentioned temperature control mode can be adopted.
The degree of drying of dryer is divided into multiple grade according to the residual moisture content of the load after oven dry.Dryness level is divided into " damp state " " generally doing " " very dry " Three Estate by the present invention.
When the residual moisture content of load is 10%-16%, dryness level is set to " damp state ".The load of this grade is applicable to pressing, without the need to spraying water during flatiron again.
When the residue water content of load is 3%-5%, dryness level is set to " generally doing ".The load of this grade can directly be worn.
When the residue water content of load is 1%-3%, dryness level is set to " very dry ".The load of this grade is applicable to putting cabinet and stores.
The frequency values that " 1 " that above-mentioned three dryness levels use humidity sensor to derive holds is distinguished mutually.Adopt above temperature control mode to heat, reach the humidity value in following table under given conditions, then think that corresponding drying course terminates.The moisture signal frequency values of the humidity sensor end point of each dryness level can according to the range set shown in table 2, as in setting " commonly using " program, the end point moisture signal frequency of " damp state " is 1200Hz, " generally do " as 240Hz, " very dry " is 240Hz, in " cotton-wadded quilt " program, the end point moisture signal frequency of " damp state " is 160Hz, " generally do " as 160Hz, " very dry " is 160Hz etc., each moisture signal frequency values in preferred table 3.
The moisture signal frequency values of the various program of table 2 different dryness level humidity sensor end point
The moisture signal frequency preferred value of the various program of table 3 different dryness level humidity sensor end point
| Conventional | 1250 | 245 | 245 |
| Cotton-wadded quilt | 180 | 180 | 180 |
Use for the convenience of the user, the present invention is ad hoc " moist alarm " function also, and what level is the loadtype no matter user is dried, dry, function that as long as user have selected " moist alarm ", dryer will between clothing residual moisture content 20%-30% time start alarm.This greatly facilitates the use of dryer, user can by need flatiron, do not need to press put together and dry, when clothing moisture signal frequency arrive setting (general clothing is 1500Hz, cotton-wadded quilt is 300Hz), dryer sends alarm, user can take out clothing and press, and does not need the clothing pressed can continue to dry setting degree of drying.
Due to the load of " very dry " and " generally doing ", its moisture signal shown relatively, therefore rely on merely moisture signal frequency values cannot accurately disjunction, " very dry " is identical with the end point set of frequency of " generally doing " by the present invention, introduces the end point that a kind of auxiliary judgment method judges " very dry " simultaneously.If the time reaching " generally doing " level is T2 (as 50min), the time reaching " damp state " level is T1 (as 32min), Δ T=T2-T1 (18min), the then drying time of " very dry " added-time Δ t after " generally doing " level
, should
be generally 0.2-0.5, and the longest 18min of restriction Δ t.Namely, after arriving " generally doing " level, after the time of Δ t, the degree of drying of system automatic decision load is " very dry ", herein
coefficient selects suitable value automatically according to concrete loadtype.
As mentioned above, " very dry " judgement depend on " damp state " and " generally do " and accurate judgement.Simultaneously because user may adopt " commonly using " program to dry various load, so the design of " commonly using " program should the oven dry demand of the various load of As soon as possible Promising Policy.According to the analysis to test data, although load is different, the oven dry level of " generally doing " is relatively stable, therefore " commonly use " program dry emphasis just drop on " damp state " and accurate judgement on.
1250Hz is set to the moisture signal frequency of load " damp state ", test finds for general textile load and mixed load, humidity level can be stabilized between moisture content 10%-16%, and for the load of pure bath towel, its humidity level is in moisture more than 23%.And different loads arrives electrical characteristic during damp state, resistance, voltage or frequency are all different, force to adopt unified standard to cause erroneous judgement.Problem as just having for pure bath towel load, " damp state " level of drying is undesirable, and the oven dry level of " very dry " again overdrying is lost time and electric energy.Therefore, need the design of drying procedure perfect further, control the accurate judgement of " damp state " well.Analysis data find, the moisture signal frequency of bath towel load is when about 700Hz, moisture content is between 10%-16%, the parameter (1250Hz) of drying level with " the damp state " preset differs greatly, therefore can not only rely on humidity parameter to carry out humidity judgement, and need in the drying procedure of " commonly using ", rely on other supplementary means to carry out similar fuzzy Judgment, judge the type of load, thus the drying course of load is controlled more accurately.
Analyze the temperature humidity curve (as Fig. 2, Fig. 3) of various load, can find, nearly all load is all before reaching " damp state " (moisture content 16%) level, have obvious temperature to rise (, at about 1500Hz, honest bath towel moisture signal frequency is at about 700Hz for general load moisture signal frequency).Therefore, can judge whether to carry out humidity judgement according to this temperature characterisitic.
After oven dry enters the phase III, first system carries out temperature judgement, when the ascensional range of load temperature reaches setting value T-target (being generally 5 DEG C-7 DEG C, preferably 6 DEG C), then enters humidity determining program.
The present invention adopts and judges whether temperature obviously rises with the following method: as utilized NTC kind per second to sample to temperature, every 10s is a unit, sums up on average to all temperature in 10s, mean value is designated as T1, the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.Reach setting value T-target when Tmax deducts Tmin, then enter the humidity determining program of load.Humidity determining program performs in strict accordance with table 2 or table 3.
For general clothing, utilize above-mentioned humidity characteristic just can judge its oven dry degree accurately.But for thick and heavy clothings such as the towelling coverlet classes that needs are dried with " cotton-wadded quilt " drying procedure, when moisture signal frequency arrives between 200-250Hz, be its dry tack free, and still wet in its inside.
By the temperature data of analytical test, the humidity and temperature contrast table of general clothing as shown in Figure 2, inventor finds when laundry humidity signal frequency is 1000Hz, and temperature starts obvious rising, and after moisture signal frequency is less than 240Hz, clothing has just been done.Therefore for " commonly using " program, can determine that moisture signal frequency is less than 240Hz is dry termination condition; And moisture signal frequency temperature when 500Hz of the thick and heavy clothing such as towelling coverlet, summer cool quilt just obviously rises, moisture signal is less than after 240, the moisture content of clothing is still about 20%, and in the humidity stable long period, temperature is a kind of fluctuation form, repeatedly reaches the higher limit of design temperature shelves.Therefore drawing when drying thick and heavy clothing with " cotton-wadded quilt " program, except controlling except drying course with the humidity sensor end point of each dryness level shown in table 2, also needing to add auxiliary determination methods to determine the termination condition of each dryness level.Inventor is through a large amount of test analysis, determine a kind of desirable auxiliary judgment method: namely on the basis of above-mentioned conventional determination methods, controlled humidity signal frequency is lower than 300Hz, temperature is made to reach temperature shelves higher limit to reach specific dryness level for several times, judgement as " damp state " level is: controlled humidity signal frequency lower than 300Hz, and makes temperature reach temperature shelves higher limit for 1 time; The judgement " generally doing " level is: controlled humidity signal frequency is lower than 300Hz, and making temperature reach temperature shelves higher limit for 4 times, the judgement of " very dry " level is: the time that definition reaches " damp state " level is T1, and the time reaching " generally doing " level is T2, Δ T=T2-T1
, after reaching " generally doing " level, the added-time dries Δ t, and system and automatic decision load reach " very dry " level, wherein,
for 0.2-0.5.During as dried 1-2 bar towelling coverlet, reaching 4 protection values has more satisfactory oven dry level.Like this, inventor can determine that the oven dry termination condition of towelling coverlet class clothing program is that humidity is less than 300Hz and temperature arrives 4 temperature shelves higher limits or humidity value is less than 180Hz.
Reach after drying termination condition, system stops heating, and drive fan is blown a cold wind over to dryer inner chamber, cooling load.Cool time successively decreases from 5min.Until temperature is down to setting value, this setting value is 38 DEG C-45 DEG C, preferably 40 DEG C.If do not reach design temperature in 5min, control panel continues display 1min, until temperature is down to design temperature.If temperature does not arrive design temperature yet as 40 DEG C after 10min, then directly terminate cooling procedure, enter subsequent process as terminated, wrinkle resistant etc.
Adopt technique scheme, the present invention can obtain following beneficial effect:
1, the present invention sets up " moist alarm " in the drying procedure of clothing, and this function facilitates the flatiron operation of user.
2, for the drying procedure that the thick and heavy garment designed such as towelling coverlet class are special, and adopt temperature-humidity to combine accurately to control oven dry level, avoid thick and heavy clothes drying thoroughly or because of the over-drying clothing damage that causes and too much energy consumption.
3, set up the dryness level of auxiliary judgment method to clothing to judge more accurately, enable dryer realize the object of clothes drying-stopping, and farthest can reduce power consumption.
4, instant invention overcomes specific program in prior art can only dry the thick and heavy clothing such as defect and summer cool quilt of specific clothing cannot the problem of auto-drying, the load judgment of " commonly using " program of introducing obfuscation, make a program dry various clothing and become possibility, " commonly using " program that achieves really accurately dries various conventional clothing function, has great convenience for the user to use.
Accompanying drawing explanation
Fig. 1 dryer humidity sensor bimetal strip humidity sample circuit figure
Fig. 2 general clothes drying process humidity and temperature contrast table
The thick and heavy clothes drying process humidity and temperature contrast tables such as Fig. 3 towelling coverlet class
Fig. 4 " commonly uses " the drying operation schematic flow sheet (Fig. 4 comprises Fig. 4 A and Fig. 4 B, and wherein Fig. 4 B is the further part of Fig. 4 A) of each dryness level of certain load under program
The drying operation schematic flow sheet of each dryness level of certain load under Fig. 5 " cotton-wadded quilt " program
Detailed description of the invention
Embodiment 1
When user uses, first switch on power, select " commonly using " program, arrange baking temperature for " low temperature ", dryness level is " damp state ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 45 DEG C, an only heater strip energising.When temperature is elevated to 50 DEG C time, two heater strip power-off simultaneously, until temperature drops to 45 DEG C, now control a heater strip energising again, until temperature drops to 39 DEG C, two heater strips are energized simultaneously.Circulate with this, until drying course terminates.
Adopt said temperature control mode to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, and when moisture signal frequency is lower than 1500Hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 5 DEG C to Tmax, continue dry and gather moisture signal f, see the moisture signal frequency end point that whether it arrives " damp state ".
When f is 1250Hz, system stops drying automatically, enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 40 DEG C, terminate all drying operations.
Embodiment 2
When user uses, first switch on power, select " commonly using " program, arrange baking temperature for " middle temperature ", dryness level is " generally doing ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 50 DEG C, an only heater strip energising.When temperature is elevated to 54 DEG C time, two heater strip power-off simultaneously, until temperature drops to 50 DEG C, now control a heater strip energising again, until temperature drops to 45 DEG C, two heater strips are energized simultaneously.Circulate with this, until drying course terminates.
Adopt said temperature control mode to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, and when moisture signal frequency is lower than 1500hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 6 DEG C to Tmax, continue dry and gather moisture signal f, see the moisture signal frequency end point that whether it arrives " damp state ".Reach " damp state " to continue afterwards dry and gather moisture signal f, the level that judges whether it arrives " generally doing ".
When f reaches 245Hz, system stops drying automatically, enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 42 DEG C, terminate all drying operations.
Embodiment 3
When user uses, first switch on power, select " commonly using " program and " moist alarm " function, arrange baking temperature for " high temperature ", dryness level is " very dry ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 54 DEG C, an only heater strip energising.When temperature is elevated to 59 DEG C time, two heater strip power-off simultaneously, until temperature drops to 54 DEG C, now control a heater strip energising again, until temperature drops to 50 DEG C, two heater strips are energized simultaneously.Circulate with this, until drying course terminates.
Said temperature control mode is adopted to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, when the moisture signal frequency values of load reaches the setting (general clothing is 1500Hz) of " moist alarm ", dryer gives the alarm prompting, user can take out the clothing that need press, and non-ironing load proceeds drying operation.
When moisture signal frequency is lower than 1500Hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 5 DEG C to Tmax, continue dry and gather moisture signal f, see the moisture signal frequency end point that whether it arrives " damp state ".
Record f, lower than time point T1 during 1250Hz, continues dry and gather moisture signal f, judges whether it arrives " generally doing ".Record f, lower than the time point T2 of 245Hz, makes Δ T=T2-T1, added-time Δ t=Δ T*0.2 after reaching T2, namely judges that load arrives " very dry " and stops heating operation.If Δ t is greater than 18min, system then automatically stops drying after 18min, enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 45 DEG C, terminate all drying operations.
Embodiment 4
When user uses, first switch on power, select " cotton-wadded quilt " program, arrange baking temperature for " low temperature ", dryness level is " damp state ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 45 DEG C, an only heater strip energising.When temperature is elevated to 50 DEG C time, two heater strip power-off simultaneously, until temperature drops to 45 DEG C, now control a heater strip energising again, until temperature drops to 39 DEG C, two heater strips are energized simultaneously.Circulate with this, until drying course terminates.
Adopt said temperature control mode to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, and when moisture signal frequency is lower than 1500hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 5 DEG C to Tmax, continue dry and gather moisture signal f, see the moisture signal frequency end point that whether it arrives " damp state ".
After f is lower than 300Hz, temperature control once reaches 50 DEG C, and the load of system automatic decision reaches " damp state " and stops drying, and enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 38 DEG C, terminate all drying operations.
In addition, as detected that f is less than 180Hz in drying course, can directly terminate to dry the cooling stage entering load.
Embodiment 5
When user uses, first switch on power, select " cotton-wadded quilt " program, arrange baking temperature for " middle temperature ", dryness level is " generally doing ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 50 DEG C, an only heater strip energising.When temperature is elevated to 54 DEG C time, two heater strip power-off simultaneously, until temperature drops to 50, now control a heater strip energising again, until temperature drops to 45 DEG C, and two heater strips break-make simultaneously.Circulate with this, until drying course terminates.Adopt said temperature control mode to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, and when moisture signal frequency is lower than 1500hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 6 DEG C to Tmax, continue dry and gather moisture signal f, see the moisture signal frequency end point that whether it arrives " damp state ".
After f is lower than 300Hz, temperature control reaches 54 DEG C four times, and the load of system automatic decision reaches " generally doing " and stops drying, and enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 40 DEG C, terminate all drying operations.
In addition, as detected that f is less than 180Hz in drying course, can directly terminate to dry the cooling stage entering load.
Embodiment 6
When user uses, first switch on power, select " cotton-wadded quilt " program and " moist alarm " function, arrange baking temperature for " high temperature ", dryness level is " very dry ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 54 DEG C, an only heater strip energising.When temperature is elevated to 59 DEG C time, two heater strip power-off simultaneously, until temperature drops to 54 DEG C, now control a heater strip energising again, until temperature drops to 50 DEG C, and two heater strips break-make simultaneously.Circulate with this, until drying course terminates.
Said temperature control mode is adopted to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, when the moisture signal frequency values of load reaches the setting (cotton-wadded quilt is 300Hz) of " moist alarm ", dryer gives the alarm prompting, user can take out the clothing that need press, and non-ironing load can proceed drying operation.
When the moisture signal frequency of load is lower than 1500hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 7 DEG C to Tmax, continue dry and gather moisture signal f and temperature signal T, see the end point that whether it arrives " damp state ".
When f is lower than 300Hz, temperature T first time reaches 54 DEG C, and writing time puts T1, continues to dry and collection signal, judges whether it arrives " generally doing ".When f is lower than 300Hz and temperature control reaches 54 DEG C four times, the load of system automatic decision reaches " generally doing " level.Record reaches the time point T2 of " generally doing " level, makes Δ T=T2-T1, and after reaching T2, the added-time dries Δ t=Δ T*0.5, namely judges that load arrives " very dry " and stops heating operation.If Δ t is greater than 18min, system then automatically stops drying after 18min, enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 40 DEG C, terminate all drying operations.
In addition, as detected that f is less than 180Hz in drying course, can directly terminate to dry the cooling stage entering load.
Embodiment 7
When user uses, first switch on power, select " cotton-wadded quilt " program, arrange baking temperature for " high temperature ", dryness level is " very dry ".
Load is thrown into dryer inner chamber, drying operation enters first stage and load judgment.In front 2min, system does not start heating unit, and the moisture signal first gathering 1 end has judged whether load.After defining load to be dried, enter the second stage of drying operation.
In drying course, control system constantly gathers NTC temperature signal, and is in a suitable degree by controlling to realize cavity temperature in dryer to the break-make of heater strip.Initial temperature starts to raise, and two heater strips heat simultaneously, and dryer inner chamber is rapidly heated.After reaching 54 DEG C, an only heater strip energising.When temperature is elevated to 59 DEG C time, two heater strip power-off simultaneously, until temperature drops to 54 DEG C, now control a heater strip energising again, until temperature drops to 50 DEG C, and two heater strips break-make simultaneously.Circulate with this, until drying course terminates.
Adopt said temperature control mode to continue drying operation, the every 0.4s of humidity sensor gathers a humidity data and gathers moisture signal frequency f simultaneously, and when the moisture signal frequency of load is lower than 1500hz, drying operation enters the phase III.
Collecting temperature signal T, every 10s are a unit, and sum up on average all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3, T4 ... Tn.When to deduct Tmin be 6 DEG C to Tmax, continue dry and gather moisture signal f and temperature signal T, see the end point that whether it arrives " damp state ".
When f is lower than 300Hz, temperature T first time reaches 54 DEG C, and writing time puts T1, continues to dry and collection signal, judges whether it arrives " generally doing ".When f is lower than 300Hz and temperature control reaches 54 DEG C four times, the load of system automatic decision reaches " generally doing " level.Record reaches the time point T2 of " generally doing " level, makes Δ T=T2-T1, and after reaching T2, the added-time dries Δ t=Δ T*0.4, namely judges that load arrives " very dry " and stops heating operation.If Δ t is greater than 18min, system then automatically stops drying after 18min, enters the fourth stage of drying operation and the cooling stage of load.Blow a cold wind over to dryer inner chamber, until temperature is down to setting value 40 DEG C, terminate all drying operations.
In addition, as detected that f is less than 180Hz in drying course, can directly terminate to dry the cooling stage entering load.
Embodiment in above-described embodiment can combine further or replace; and embodiment is only be described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; under the prerequisite not departing from the utility model design philosophy; the various changes and modifications that in this area, professional and technical personnel makes the technical solution of the utility model, all belong to protection domain of the present utility model.
Claims (10)
1. a method for dryer auto-drying clothing, comprises as the next stage:
First stage: the judgement of load; The judgement of described load comprises: after selecting suitable drying program and baking temperature, and start dryer, system does not start heating operation in 2min, directly carries out the presence or absence of load, dry wet judgement; Drying program comprises " commonly using " and " cotton-wadded quilt "; Baking temperature comprises " high temperature ", " middle temperature " and " low temperature ";
Second stage: system carries out judging and the heating, drying process of control load to the dryness level of load in conjunction with the temperature characterisitic of load, humidity characteristic; Dryness level comprises " damp state ", " generally doing " and " very dry ", " damp state " the i.e. residual moisture content of load is 10 ﹪-16 ﹪; The residue water content " generally doing " i.e. load is 3%-5%; " very dry " the i.e. residue water content of load is 1%-3%;
Wherein, the temperature range of described high temperature is 50 DEG C ~ 59 DEG C, and the temperature range of described middle temperature is 45 DEG C ~ 54 DEG C, and the temperature range of described low temperature is 39 DEG C-50 DEG C; The determination methods of described " very dry " is: the time that definition reaches " damp state " level is T1, the time reaching " generally doing " level is T2, Δ T=T2-T1, Δ t=〥 * Δ T, after reaching " generally doing " level, the added-time dries Δ t, system and automatic decision load reach " very dry " level, and wherein ， 〥 is 0.2-0.5;
Phase III: the cooling stage of load.
2. method according to claim 1, is characterized in that: described dryness level judges, the moisture signal frequency of its end point is as follows:
" commonly use " program each dryness level end point moisture signal frequency: " damp state " is 1200Hz-1300Hz, and " generally doing " is 230Hz-260Hz, and " very dry " is 230Hz-260Hz; " cotton-wadded quilt " program each dryness level end point moisture signal frequency: " damp state ", " generally doing ", " very dry " are 150Hz-200Hz.
3. method according to claim 1, it is characterized in that: described dryness level judges, the moisture signal frequency of its end point is: " commonly using " program each dryness level end point moisture signal frequency: " damp state " is 1250Hz, and " generally doing " is 245Hz, and " very dry " is 245Hz; " cotton-wadded quilt " program each dryness level end point moisture signal frequency: " damp state ", " generally doing ", " very dry " are 180Hz.
4. method according to claim 1, is characterized in that: described drying program is also provided with " moist alarm " function of applicable clothing flatiron, and after the degree of drying of clothing arrives preset level, dryer gives the alarm, and reminding user carries out flatiron operation.
5. method according to claim 1, it is characterized in that: the judgement of " damp state " level of " commonly using " program also comprises an auxiliary judgment method except according to except moisture signal frequency values, this auxiliary judgment method is: judge whether the ascensional range of load temperature reaches setting value T-target, T-target is 5 DEG C-7 DEG C.
6. method according to claim 5, is characterized in that: described T-target is 6 DEG C.
7. method according to claim 5, it is characterized in that: the auxiliary judgment method of described " damp state " level is: utilize NTC to sample to temperature each second, be a unit with every 10s, sum up on average to all temperature in 10s, mean value is designated as T1, and the temperature averages of second 10s is designated as T2, and follow-up is T3 to Tn, setting value T-target is reached, level that system then judges that load reaches " damp state " when Tmax deducts Tmin.
8. method according to claim 3, it is characterized in that: in " cotton-wadded quilt " program, the judgement of each dryness level also comprises an auxiliary judgment method except according to except moisture signal frequency values, this auxiliary judgment method is: controlled humidity signal frequency is lower than 300Hz, and reaching temperature shelves higher limit can judge that load reaches specific dryness level for several times to make temperature, wherein, the judgement of " damp state " level is: controlled humidity signal frequency lower than 300Hz, and makes temperature reach temperature shelves higher limit for 1 time; The judgement " generally doing " level is: controlled humidity signal frequency is lower than 300Hz, and make temperature reach temperature shelves higher limit for 4 times, the judgement of " very dry " level is: the time that definition reaches " damp state " level is T1, the time reaching " generally doing " level is T2, Δ T=T2-T1, Δ t=〥 * Δ T, after reaching " generally doing " level, the added-time dries Δ t, system and automatic decision load reach " very dry " level, and wherein ， 〥 is 0.2-0.5.
9. the method according to any one of claim 1-8, is characterized in that: the cooling stage of described load is: terminate drying operation, blow a cold wind over to dryer inner chamber, until the temperature of load is down to setting value, this setting value is 38 DEG C-45 DEG C.
10. method according to claim 9, is characterized in that: described setting value is 40 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104278503B (en) * | 2013-07-03 | 2018-08-07 | 青岛海尔洗衣机有限公司 | A kind of dryer drying remaining time method of adjustment |
| MX358870B (en) | 2014-04-16 | 2018-09-04 | Mabe Sa De Cv | Intelligent electronic system for previously sensing the dryness condition of a textile clothes load in an automatic electronic clothes dryer machine. |
| CN106480685B (en) * | 2015-08-31 | 2020-02-07 | 青岛海尔洗衣机有限公司 | Clothes drying method and clothes dryer |
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| CN109629207B (en) * | 2018-12-29 | 2021-07-16 | 无锡小天鹅电器有限公司 | Drying control method and device and clothes treatment device |
| CN111809344A (en) * | 2019-04-12 | 2020-10-23 | 宁波吉德电器有限公司 | Clothes drying method and washing and drying integrated machine adopting same |
| CN112359549A (en) * | 2019-07-24 | 2021-02-12 | 青岛海尔洗衣机有限公司 | Control method of clothes treatment device and clothes treatment device |
| CN110924109A (en) * | 2019-12-03 | 2020-03-27 | 无锡小天鹅电器有限公司 | Control method of clothes treatment equipment |
| CN113584834A (en) * | 2020-04-30 | 2021-11-02 | 青岛海尔洗衣机有限公司 | Load drying control method and device, clothes dryer and storage medium |
| CN112815655A (en) * | 2021-01-04 | 2021-05-18 | 上海威士机械有限公司 | Control method of through type dryer |
| CN113403820B (en) * | 2021-06-21 | 2023-11-14 | 宁波奥克斯电气股份有限公司 | Clothes drying method and device and air conditioner |
| CN114576949A (en) * | 2022-03-03 | 2022-06-03 | 艾兰洁智能科技(浙江)有限公司 | Energy-saving efficient dryer |
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Effective date of registration: 20160812 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee after: Qingdao Haier Washing Machine Co., Ltd. Address before: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Patentee before: haier group corporation Patentee before: Qingdao Haier Washing Machine Co., Ltd. |