CN102720045B - A kind of control method and dryer for judging the blocking of heat pump clothes dryer lint filter - Google Patents
A kind of control method and dryer for judging the blocking of heat pump clothes dryer lint filter Download PDFInfo
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- CN102720045B CN102720045B CN201210163162.8A CN201210163162A CN102720045B CN 102720045 B CN102720045 B CN 102720045B CN 201210163162 A CN201210163162 A CN 201210163162A CN 102720045 B CN102720045 B CN 102720045B
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Abstract
The invention discloses a kind of control method and dryer for judging the blocking of heat pump clothes dryer lint filter, judge whether lint filter blocks by detecting the temperature difference of turnover cylinder air under the working condition of heat pump stabilization, to point out user to clear up lint filter.The temperature sensor that the heat pump clothes dryer is set by three positions, first detects whether to reach the heat pump working condition of stabilization, and then detects turnover cylinder temperature difference, so as to judge whether heat pump clothes dryer lint filter blocks；The present invention is using under the heat pump working condition for reaching stabilization, detection turnover cylinder temperature difference is so as to judge the heat pump clothes dryer whether heat pump clothes dryer lint filter blocks, can in time be formed a prompt judgement air channel stopping state, remind user's cleaning line bits, improve the security of product, improve drying efficiency, energy saving.
Description
Technical field
It is especially a kind of to judge the bits filtering of heat pump clothes dryer line the present invention relates to a kind of dryer and laundry drier control method
Control method and heat pump clothes dryer that device is blocked.
Background technology
Following air circulation duct is provided with existing heat-pump-type clothes drying device：By cold in heat pump circulating system
The heating air that condenser carried out heating is admitted to the humid air quilt for having captured moisture in the hothouse equipped with clothing from clothing
Send back to and dehumidified at evaporator, the air after dehumidifying is heated by condenser again, and send into hothouse.
The Chinese patent of Application No. 200610153406.9 disclose one kind can make generation hothouse and heat pump it
Between the heat pump of drying air that circulates realize the clothes drying device of stable operation.Wherein, carried out by the heater in heat pump
During the air of heating is sent into as the steel ladle of hothouse, heat is returned to from after the air through filter unit of steel ladle discharge
Pump, delivers to heater again after being dehumidified by heat dump, form air circulation duct.Lint filter is provided with filter unit,
And it is provided with the pipeline being connected with air outlet and air induction port.
Partial line bits are carried with the humid air after clothing heat exchange, it is attached on fin into evaporator to prevent line from considering to be worth doing
, often line bits are filtered than the screen pack of comparatively dense using multi-layer net.If without in time to screen pack after drying
Carry out cleaning and cause accumulation, big decay will be caused to the air quantity for drying blower fan, influence drying efficiency.It is possible to effective basis
The Parameters variation of drying system, online bits are pointed out when blocking, and can in actual use be improved and be used efficiency.
The Chinese patent of Application No. 200910169654.6 discloses a kind of fault self-detection method of roller dryer, is drying
Before the dry stage starts, heater low-power heating silk is first connected, judges whether air channel blocks by monitoring thermostat and whether disconnecting,
If in a setting time t, thermostat is not turned off, then perform next detection, is otherwise stopped and alarms；Passed by temperature
Whether whether the range of temperature Δ T that sensor is measured in setting time t is less than setting value T to judge heater work
Normally, enter baking stage if range of temperature Δ T is more than setting value T, be otherwise stopped and alarm.
The Chinese patent of Application No. 201110070965.4 discloses a kind of clothes dryer air duct jam judging method, including
Following steps：Drying operation；NTC thermistor on the heater housing change in resistance according to heated air temperature,
Temperature signal is conveyed to computer program controller；The temperature difference of the computer program controller according to resistance signal of change within setting interval time Δ t
Δ T, Δ t scope are 15s-20s, if temperature difference Δ T is more than setting value Δ T0, heater, motor are stopped, computer program controller
Alarm signal is sent to suggestion device, cleaning lint filter is pointed out；Lint filter cleaning complete, start, repeat with
Upper step.
Above-mentioned determination methods are not suitable in heat pump clothes dryer, because heat pump clothes dryer operating ambient temperature is to its load
Have a certain impact, when environment temperature is different, the time for running to peak load is also different, therefore judge using in time range
The temperature difference, there is a possibility that erroneous judgement.
In view of this it is special to propose the present invention.
The content of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, there is provided a kind of to reach the heat pump of stabilization
Under working state of system, detection turnover cylinder temperature difference, should so as to judge the control method that heat pump clothes dryer lint filter is blocked
Determination methods are simple, accurate, and then relative raising drying efficiency.
Another object of the present invention is to provide the heat pump clothes dryer with the control method.
In order to solve the above technical problems, the present invention is using the basic conception of technical scheme：One kind judges heat pump clothes dryer
The control method that lint filter is blocked, by the temperature difference that turnover cylinder air is detected under the working condition of heat pump stabilization
To judge whether lint filter blocks, to point out user to clear up lint filter.
Heat pump working condition includes the heat pump cold conditions oven-dried condition of operation and continuous operation for the first time per task
The continuous drying state of drying procedure, different state correspondence judges that the established standardses whether lint filter blocks are different.
With the compressor assembly temperature change that the transitory motions of drying procedure operation incipient stage auxiliary condensation fan cause,
Judge whether dryer is in continuous drying state and cold conditions oven-dried condition.
Maximum load is reached with condensator outlet temperature, conduct judges whether to reach before programme-control auxiliary condensation fan action
To the working condition of heat pump stabilization.
Temperature into cylinder is reflected with the temperature of condensator outlet, lint filter is judged with the temperature difference gone out between a temperature
Whether block.
The control method is concretely comprised the following steps：
A, drying start；
B, auxiliary condensation fan action setting time t；
Whether c, the temperature of detection compressor assembly reach setting value than the temperature difference of decline before auxiliary condensation fan action
△ T, if it is, judging that dryer is continuous drying state, the criterion for now using turnover cylinder temperature difference is T1；If
It is no, judge that dryer is cold conditions oven-dried condition, the criterion for now using turnover cylinder temperature difference is T2；
D, judge whether condensator outlet temperature reaches setting value T3, if it is, judging that dryer reaches peak load；Enter
Enter step e；If not, judge that dryer is not reaching to peak load, into step g；
It is e, different according to continuous drying state and cold conditions oven-dried condition, judge condensator outlet and drum outlet temperature difference
Whether T1 or T2 is more than；If it is, into step f；If not, into step h；
F, prompting user filtering device line bits are blocked, into step i；
G, whether drying requirement is reached, if into step j；Enter step d if not；
H, whether drying requirement is reached, if into step j；If not, into step e；
I, whether drying requirement is reached, if into step j；If not, stopping drying prompting cleaning filter line bits；
J, EP (end of program).
The temperature of the compressor assembly is the heat pump of detection in addition to dryer air dewetting and heating part
Position temperature, the preferably temperature on compressor housing surface, temperature, the temperature of condensator outlet of compressor exhaust pipe outlet
Degree.
It is 2~180s, 1 DEG C≤△ of temperature difference setting value T in step c that condensation fan action setting time t is aided in step b
≤ 20 DEG C, 20 DEG C≤T1≤50 DEG C, 15 DEG C≤T2≤45 DEG C, T2≤T1,40 DEG C≤T3≤70 DEG C in step d.
Judge prompting mode that filter line bits block for symbolization or character or animation are pointed out on a display panel or
With auditory tone cues.
Dryer of the present invention, including heat pump and temperature-detecting device, described temperature-detecting device is at least
Go out a temperature sensor, the exhaust gas temperature sensor of detection compressor assembly temperature and detection including detecting a temperature are condensed
The condenser temperature sensor of device outlet temperature.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
By using above-mentioned technical scheme, the temperature sensor set by three positions first detects whether to reach surely
Fixed heat pump working condition, and then turnover cylinder temperature difference is detected, so as to judge whether heat pump clothes dryer lint filter blocks up
Plug；, using under the heat pump working condition for reaching stabilization, detection turnover cylinder temperature difference is so as to judge heat pump clothes-drying for the present invention
The heat pump clothes dryer whether machine lint filter blocks, can form a prompt judgement air channel stopping state in time, remind user's cleaning
Line is considered to be worth doing, improves the security of product, improves drying efficiency, energy saving.
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is heat pump clothes-drying system schematic of the present invention；
Fig. 2 is heat pump clothes dryer schematic diagram of the present invention；
1 compressor, 2 condensers, 3 throttling arrangements, 4 evaporators, 5 Air Blast fans, 6 exhaust gas temperature sensors, 7 condenser temperature
Degree sensor, 8 auxiliary condensation fans, 9 rollers, 10 go out a temperature sensor
Specific embodiment
As depicted in figs. 1 and 2, heat pump clothes dryer of the present invention includes roller 9 and the heat pump system being provided with below roller
, by drying air channel imported into the hot blast that heat pump clothes-drying system is produced by Air Blast fan 5 clothing dried in roller by system, and heat pump is done
Clothing system includes the heat pump module with compressor 1, condenser 2, throttling arrangement 4 and evaporator 5, also including for compressor
1 surface cooling to adjust the auxiliary condensation fan 8 of load, by refrigerant circulation pipe successively by compressor 1, condenser 2, throttling
Device 3, evaporator 4 are connected to compressor 1 again.Described condenser 2 is provided with condenser temperature sensing near refrigerant outlet
Device 7, the condenser temperature sensor 7 detects the temperature of condensator outlet, blast pipe of the exhaust gas temperature sensor 6 located at compressor
Near exit detecting compressor assembly temperature, go out a temperature sensor 10 out enter afterwards from roller located at air evaporator it
Between air channel in, for detecting that air goes out the temperature of cylinder.
The present invention enters an air themperature with a temperature difference is gone out to judge whether lint filter blocks by dryer, its
In, the condensator outlet surface temperature of the detection of condenser temperature sensor 7 can indirectly reflect that dryer enters an air themperature, institute
It is to drying air heating part coil outlets and evaporator throttling arrangement forward part to state condensator outlet surface temperature.Due to
The present invention judges that whether the temperature difference that lint filter is blocked compares numerical value and is continuous work according to dryer and different, therefore need to
First to judge whether heat pump is continuous duty, and the temperature change perceived according to compressor assembly surface probe,
Can sentence whether the disconnected dryer of section is continuous work, wherein, compressor assembly surface probe position is to be used to dryer
Compressor assembly position outside air dewetting and heating part, such as compressor housing, exhaust outlet, condensator outlet etc.,
Preferably using the exhaust gas temperature sensor 6 being located near exhaust outlet.When detection line considers plugged filter to be worth doing, can be using symbol
Number or character or animation pointed out on a display panel or with auditory tone cues；Preferably prompting character is flicker state, is pointed out
Sound is on-off state, and animation coordinates prompting optimal with sound.
The present invention is using condenser locations and goes out the temperature difference of a position as judgment mode：The TEMP of heat pump clothes dryer
Device has three, and be respectively out a position goes out a temperature sensor 10, the exhaust gas temperature sensor 6 of compressor air-discharging position and pressure
The condenser temperature sensor 7 of contracting machine condensator outlet position, or it is further added by detecting the sensor of compression case temperature.Cause
There is a close corresponding relation to be placed on the condenser temperature sensor 7 of condensator outlet position and condensation temperature, and condenser
Most of heat transfer area surface temperature it is consistent with condensation temperature, by the air themperature of condenser, when entering tin, temperature is most
High close with condensation temperature, if air quantity is smaller, entering a temperature may slightly higher and condensation temperature.So the present invention is gone out with condenser
The reflection dryer of condenser temperature sensor 7 of mouthful position enters a temperature, and the sensor detected into a temperature is not increased additionally.
The present invention reaches maximum load T3 with condensation temperature, and 40 DEG C≤T3≤70 DEG C, programme-control auxiliary condensation fan 8 is moved
Conduct judges the moment before making：Because the turnover cylinder temperature of heat pump clothes dryer all gradually rises after drying starts, enter a temperature liter
Speed high is higher than the elevated speed of a temperature, so temperature difference is gradually increased, when condensation temperature reaches maximum load, program
When control auxiliary condensation fan 8 is acted, enter a temperature and reach peak, turnover cylinder temperature difference also reaches peak, hereafter because
The Load Regulation that the auxiliary start-stop of condensation fan 8 is carried out, enters a temperature and is floated in the upper and lower small range of peak, goes out a temperature and gradually rises
Height, turnover cylinder temperature difference is gradually reduced.When online bits plugged filter, the temperature difference of correspondence temperature rise period becomes big, due to
Temperature difference reaches highest, difference variation when lint filter is blocked before load reaches maximum and auxiliary condensation fan action
Most substantially, so discriminating whether to block using temperature difference.Because environment temperature it is different when, run to time of peak load also not
Together, take this mode to exclude certain hour after operation to be judged because of the deviation that ring temperature causes.
The present invention is changed with running the system temperature that the transitory motions of incipient stage auxiliary condensation fan 8 cause, and judges dry
Whether clothing machine is in continuous duty.When heat pump clothes dryer is the first task of the same day, compressor housing is in cold conditions, pressure
Contracting machine load is relative to be raised relatively slowly, and mutually turnover cylinder difference variation is also smaller in the same time；When heat pump clothes dryer running hours, that is, dry
Finish after a program and carry out new drying clothing program, compressor load is relative to be raised very fast, and cylinder temperature is mutually passed in and out in the same time
Difference change is also larger, judges that the temperature difference that line bits are blocked will be increased accordingly, so, when operation starts, auxiliary condensating wind is motor-driven
After making a setting time t, t is 2~180s, and the room temperature wind in auxiliary condensation fan inspiration environment is blown on compressor housing,
Under compressor continuous duty, compressor assembly surface is hot, if the temperature of compressor assembly, i.e. delivery temperature are sensed
, there is decline temperature difference △ T, 1 DEG C≤△ T in the delivery temperature or the condensator outlet temperature of condenser temperature sensor 7 of the detection of device 6
Whether≤20 DEG C, such as temperature difference △ T are 3 DEG C, it is possible to distinguish dryer in continuous duty.If decline reaches
△ T, then judge that dryer is continuous drying state, now using the criterion T1 of turnover cylinder temperature difference, 20 DEG C≤T1≤50
℃；If not, judge that dryer is cold conditions oven-dried condition, now using 15 DEG C≤T2≤45 of criterion of turnover cylinder temperature difference
DEG C, and T1 >=T2.
Concretely comprise the following steps：
A, drying start；
B, auxiliary condensation fan action 30s；
Whether c, the temperature of detection compressor assembly reach 3 DEG C than the temperature difference of decline before auxiliary condensation fan action, such as
Fruit is to judge that dryer is continuous drying state, and the criterion for now using turnover cylinder temperature difference is 35 DEG C；If not, sentencing
Dryer is determined for cold conditions oven-dried condition, and the criterion for now using turnover cylinder temperature difference is 30 DEG C；
D, judge whether condensator outlet temperature reaches 65 DEG C of setting value, if it is, judging that dryer reaches peak load；
Into step e；If not, judge that dryer is not reaching to peak load, into step g；
It is e, different according to continuous drying state and cold conditions oven-dried condition, judge condensator outlet and drum outlet temperature difference
Whether 35 DEG C or 30 DEG C are more than；If it is, into step f；If not, into step h；
The figure or symbol letter prompting user filtering device line bits that f, control panel flicker represent lint filter blocking are stifled
Plug, into step i；
G, whether drying requirement is reached, if into step j；Enter step d if not；
H, whether drying requirement is reached, if into step j；If not, into step e；
I, whether drying requirement is reached, if into step j；If not, stopping drying prompting cleaning filter line bits；
J, EP (end of program).
Above-mentioned implementation method is only that the preferred embodiments of the present invention are described, not to design of the invention and model
Enclose and be defined, on the premise of design philosophy of the present invention is not departed from, professional and technical personnel in the art are to technology of the invention
The various changes and modifications that scheme is made, belong to protection scope of the present invention.
Claims (10)
- It is 1. a kind of to judge the control method that heat pump clothes dryer lint filter is blocked, it is characterised in that：By steady in heat pump Detect the temperature difference of turnover cylinder air under fixed working condition to judge whether lint filter blocks, to point out user to consider line to be worth doing Filter is cleared up, and heat pump is after condensator outlet temperature reaches maximum load, and programme-control auxiliary condensating wind is motor-driven Working condition before making in this period of time is the working condition of stabilization.
- 2. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 1 is blocked, its feature exists In：Heat pump working condition includes the cold conditions oven-dried condition and continuous operation drying journey that heat pump runs for the first time per task The continuous drying state of sequence, different state correspondence judges that the established standardses whether lint filter blocks are different.
- 3. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 2 is blocked, its feature exists In：With the compressor assembly temperature change that the transitory motions of drying procedure operation incipient stage auxiliary condensation fan cause, judge Whether dryer is in continuous drying state or cold conditions oven-dried condition.
- 4. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 1 is blocked, its feature exists In：Temperature into cylinder is reflected with the temperature of condensator outlet, whether lint filter is judged with the temperature difference gone out between a temperature Block.
- 5. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 1 is blocked, its feature exists In：The control method is concretely comprised the following steps：A, drying start；B, auxiliary condensation fan action setting time t；Whether c, the temperature of detection compressor assembly reach setting value △ T than the temperature difference of decline before auxiliary condensation fan action, If it is, judging that dryer is continuous drying state, the criterion for now using turnover cylinder temperature difference is T1；If not, sentencing Dryer is determined for cold conditions oven-dried condition, and the criterion for now using turnover cylinder temperature difference is T2；D, judge whether condensator outlet temperature reaches setting value T3, if it is, judging that dryer reaches peak load；Into step Rapid e；If not, judge that dryer is not reaching to peak load, into step g；It is e, different according to continuous drying state and cold conditions oven-dried condition, judge whether are condensator outlet and drum outlet temperature difference More than T1 or T2；If it is, into step f；If not, into step h；F, prompting user filtering device line bits are blocked, into step i；G, whether drying requirement is reached, if into step j；Enter step d if not；H, whether drying requirement is reached, if into step j；If not, into step e；I, whether drying requirement is reached, if into step j；If not, stopping drying prompting cleaning filter line bits；J, EP (end of program).
- 6. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 3 or 5 is blocked, its feature It is：The temperature of the compressor assembly is position of the heat pump of detection in addition to dryer air dewetting and heating part The temperature put.
- 7. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 6 is blocked, its feature exists In：The temperature of the compressor assembly is the temperature on compressor housing surface, or is the temperature of compressor exhaust pipe outlet, or Person is the temperature of condensator outlet.
- 8. the control method that a kind of judgement heat pump clothes dryer lint filter according to claim 5 is blocked, its feature exists In：It is 2~180s, 1 DEG C≤△ of temperature difference setting value T≤20 in step c that condensation fan action setting time t is aided in step b DEG C, 20 DEG C≤T1≤50 DEG C, 15 DEG C≤T2≤45 DEG C, T2≤T1,40 DEG C≤T3≤70 DEG C in step d.
- 9. it is a kind of according to claim 1 or 5 to judge the control method that heat pump clothes dryer lint filter is blocked, its feature It is：Judge that the prompting mode that filter line bits are blocked is pointed out or with sound on a display panel for symbolization or character or animation Sound is pointed out.
- 10. a kind of dryer with the control method as described in claim 1-9 is any, described dryer includes heat pump And temperature-detecting device, it is characterised in that：Described temperature-detecting device at least includes that the temperature that goes out for detecting a temperature is passed The condenser temperature sensing of sensor, the exhaust gas temperature sensor of detection compressor assembly temperature and detection condensator outlet temperature Device.
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| CN201210163162.8A CN102720045B (en) | 2012-05-24 | 2012-05-24 | A kind of control method and dryer for judging the blocking of heat pump clothes dryer lint filter |
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| CN201210163162.8A CN102720045B (en) | 2012-05-24 | 2012-05-24 | A kind of control method and dryer for judging the blocking of heat pump clothes dryer lint filter |
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| WO2016026069A1 (en) * | 2014-08-18 | 2016-02-25 | 友隆电器工业(深圳)有限公司 | Filter screen blockage alarm device, air conditioner device, dehumidifier, air purifier and heating device |
| CN108239848B (en) * | 2016-12-23 | 2020-09-29 | 青岛胶南海尔洗衣机有限公司 | Self-diagnosis method for blockage of filter screen of drain pipe and washing machine |
| CN110004684B (en) * | 2018-01-05 | 2022-09-27 | 重庆海尔洗衣机有限公司 | Clothes treatment control system and clothes treatment equipment |
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| CN110241592B (en) * | 2018-03-09 | 2022-12-27 | 青岛海尔洗涤电器有限公司 | Clothes treatment equipment control method and clothes treatment equipment |
| CN110714310B (en) * | 2018-06-27 | 2023-07-21 | 青岛海尔洗涤电器有限公司 | Clothes treating apparatus |
| CN110804849A (en) * | 2018-08-01 | 2020-02-18 | 青岛海尔滚筒洗衣机有限公司 | Method for judging blockage of lint filter and clothes dryer |
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| CN112981862B (en) * | 2021-03-09 | 2022-11-22 | 海信冰箱有限公司 | Clothes care equipment monitoring method and device, storage medium and clothes care equipment |
| CN115613334A (en) * | 2021-07-16 | 2023-01-17 | 青岛海尔洗衣机有限公司 | Detection method of clothes treatment device and clothes treatment device |
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