CN107407038B - The method of the sanitary course in drying machine for implementing to have heat pump and drying machine applicable thus - Google Patents

The method of the sanitary course in drying machine for implementing to have heat pump and drying machine applicable thus Download PDF

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Publication number
CN107407038B
CN107407038B CN201680018535.9A CN201680018535A CN107407038B CN 107407038 B CN107407038 B CN 107407038B CN 201680018535 A CN201680018535 A CN 201680018535A CN 107407038 B CN107407038 B CN 107407038B
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compressor
temperature
sensor
drying machine
process air
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CN107407038A (en
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T·柯尼希
A·哈巴克
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/44—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing, e.g. for smoothing or removing creases
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/02—Characteristics of laundry or load
    • D06F2101/04—Quantity, e.g. weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/08—Humidity
    • D06F2103/10—Humidity expressed as capacitance or resistance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/26—Heat pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/30—Blowers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The present invention relates to a kind of for implementing the method for the sanitary course in drying machine 1, and the drying machine includes the roller 2 for washings to be dried；Process air circuit 3 is disposed with the ventilation blower 12 for transmission process air in the process air circuit；Control unit 4；Heat pump circuit 8,9,10,11 with evaporator 8, liquefier 9, throttle 10 and compressor 11；With at least one sensor 5,6,22,23, wherein by means of the humidity F of the sensor 5,6,22,23 monitoring washingsWReduction, and reaching predetermined lower limit humidity FW lowlimWhen make ventilation blower 12 revolving speed u reduce and/or make power variable compressor 11 power consumption p improve.In addition, the drying machine 1 that the present invention relates to a kind of suitable for implementing this method.

Description

For implementing the method for the sanitary course in the drying machine with heat pump and thus fitting Drying machine
Technical field
The present invention relates to a kind of for implementing the method for the sanitary course in drying machine, which includes for dry The roller of dry washings；Process air circuit is disposed with the ventilation for transmission process air in the process air circuit Machine；Control unit；Heat pump with evaporator, liquefier, throttle and compressor；With at least one sensor, wherein by In the reduction of the humidity of sensor monitoring washings.The drying that the present invention also relates to a kind of particularly suitable for implementing this method Agent.
Background technique
Such method and such drying machine are learnt by 10 2,007 018 787 A1 of open source literature DE.
Heated air (so-called process air) is guided to by doing comprising wet object by ventilation blower in drying machine Dry room is usually in (clothing) roller.Hot-air receives the moisture from object to be dried.After passing through hothouse, Process air wet at this time is guided in heat exchanger, in the case where dryer or clothes washer-dryer in order to by dirt particle, Especially villus filters out, can be preposition in the heat exchanger by filter, especially lint filter.
Energy consumption is high for this drying process, because in general, supplying before loading to object to be dried It is lost in terms of energy in the process to the heat of process air when process air cools down in a heat exchanger.By using heat Pump can be substantially reduced the energy loss.Heat pump can be used for from the process air flowed out by wet object taking heat away, should Process air also loads corresponding heat sink, and the heat is guided by means of suitable pumping plant to heat source, the heat The process air is reached from the heat source before process air loads object to be dried, is usually wet washing object.Alternatively, By means of extracting heat in the heat sink ambient enviroment from drying machine and process air can be supplied to by heat source.
It is hot, be loaded with moisture in the drying machine equipped with compressor formula (being also referred to as " compressor-type " herein) heat pump Process air cooling substantially in heat pump as carrying out in the heat sink evaporator to work, the heat through transmitting there Be used to that the refrigerant recycled in heat pump be made to evaporate.The refrigerant of evaporation reach compressor (also being claimed " compressor ") and It is compressed there.The refrigerant recycled in refrigerant circuit (being also referred to as " heat pump circuit " herein) is made by driven compressor Compressor is obtained to provide for running energy necessary to pumping procedure.The refrigerant reaches liquefier from compressor, makes there Cryogen liquefies in the case where discharging heat.The heat process air discharged.Liquefied refrigerant flow through throttle ( Its interior pressure reduction there) evaporator is returned to, thus circuit closed.It is valve, baffle or capillary portion that throttle is especially implementable.It is logical Chang Di, heat pump circuit are run in such a way that capillary is adjusted.Then, the water through condensing generally is collected in suitable container.
Heat pump clothes dryer with compressor formula heat pump generally has process air circuit and the heat pump circuit of closure.If Process air passes through the roller for being loaded with wet washing object, then process air is loaded with vapor, so that process air can have maximum To 100% relative air humidity.Drying process can be divided into three stages successively run, i.e. heating period, quasi-steady Drying stage and unstable drying stage.In the heating period, process air and wet washing object are typically heated to the first maximum Temperature value Tp, dried in terms of washings is especially with respect to surface water during quasi-steady drying stage at such a temperature.In drying During process, the relative air humidity of process air reduces, wherein with the beginning of unstable drying stage, general process is empty The temperature of gas also increases at drum outlet.This especially due to: the surface water of wet washing object is substantially evaporated, and dry Stage is accounted for leading by the so-called depth drying of washings.However, temperature raising only occurs step by step.Because being equipped with In the drying machine of heat pump, the temperature in laundry drum is usually relatively low, and for example, about 40 DEG C, so terminating towards drying process When temperature raising carried out it is slow, and cannot be guaranteed the sufficiently long period for health act on, i.e. sterilization required for High temperature.Finally, heating dried washings for a long time at the end of drying process is unfavorable in terms of energy.
Therefore, it is desirable that such sanitary course: lower energy can be passed through in the case where the sanitary course Source uses realization health effect.
Operation for heat pump drier is it is advantageously possible to control heat pump circuit.It can to this end it is possible to use, for example, having The compressor of the power consumption of change.Heat pump drier with the compressor with variable power is known per se.
Thus 2 284 310 A1 of open source literature EP describes a kind of drying machine at least one heat pump system, wherein Drying machine include with for the process air circuit of roller of clothing to be dried, at least one cooling circuit, have and can be changed Velocity of rotation compressor, be respectively used between process air circuit and cooling circuit thermal coupling first and second heat hand over Parallel operation, the adjusting unit of velocity of rotation for adjusting compressor and for measurement process air stream, coolant and/or clothing At least one sensor of at least one physical parameter as the function of time.It is disposed with central control unit, to assess ginseng It several temporal development and is handled according to the analysis of the temporal correlation of parameter to reduce the rotation speed of compressor.
10 2,005 041 145 A1 of open source literature DE describes a kind of dryer, in the dryer, for drying clothing Hot-air be heated using heat pump heating system, the heat pump heating system include with variable power compression Machine.In one embodiment, dryer includes control equipment, which is adjusted according to the temperature for being present in outside clothes dryer The power of compressor.
2 182 104 A of open source literature EP describes a kind of clothes washer-dryer with compressor formula heat pump, which includes The controllable compressor motor of speed, such as Brushless DC motor and the temperature sensor for measuring external temperature.Pass through The construction of clothes washer-dryer should be ensured that, when compressor motor remains static, use the pipe with determining opening It prevents from forming frost on an evaporator when shape throttle.
2 415 927 A of open source literature EP describes a kind of dryer with heat pump, which includes the pressure of variable speed Contracting machine.It is possible thereby to avoid, the temperature of the refrigerant in the refrigerant circuit of heat pump becomes excessively high.
2 735 643 A1 of open source literature EP describes a kind of method for monitoring dryer, which, which has, is used for Roller horse of the operation for the ventilator motor of the ventilation blower of the dry air with variable velocity and for driving laundry drum It reaches.Here, the speed of ventilator motor is adjusted based on the power consumption of drum motor or electric current.
1 775 368 A1 of open source literature EP describes a kind of clothes washer-dryer or dryer, the clothes washer-dryer or drying Machine includes adjusting unit, which is arranged the stage that turns on and off for adjusting ventilation blower, and furthermore for adjusting The rotation speed of ventilation blower.The method for drying wet laundry is also illustrated, in the method, ventilation blower is in the first drying stage Then the difference of the revolving speed in the second drying stage of first drying stage is: stream of the air in the first drying stage Dynamic speed is bigger.
10 2,007 018 787 A1 of open source literature DE describes a kind of method for running condensation dryer, this is cold Solidifying formula drying machine is with for the hothouse of object to be dried, process air circuit and with evaporator, compressor and liquid Change the heat pump circuit of device and the sensor module for determining the humidity in object to be dried, the heating for heating process air Device is located in the process air circuit and heated process air is directed through object to be dried by means of ventilation blower. Here, obtain humidity and by liquefier come heating process air until humidity, it is predetermined in 0% to 12% range It is worth (F), and connects heating device after being lower than predetermined value, and run the heating device in this way: There is at least 70 DEG C of air themperature in the drying chamber at least 5 minutes periods.The method shall apply to especially It is the disinfection of the object of washings.Certainly, additional conventional heating device is needed in order to sterilize.Heat pump can not be used, because The heat pump cannot work or be merely capable of at a high temperature of process air is for required for sterilizing to play poor effect.
Sanitary course is known for example in washing machine and clothes washer-dryer.Thus 197 51 028 A1 of DE describes one Kind in the washing machine of process control or the clothes washer-dryer of process control implement sanitary course method, the washing machine or Clothes washer-dryer has for receiving the alkali liquor container of cleaning solution and in the roller wherein rotatably supported, wherein water is filled It infuses in alkali liquor container, the water has at least one 70 DEG C temperature or is heated at least 70 DEG C of temperature, and roller is heating To wash revolving speed driving in the first time period determined during process and/or after reaching at least 70 DEG C of wash temperature, and And then rotational speed of the roller to improve.
Summary of the invention
In this context, the task of the present invention is: a kind of hygienic journey for implementing in the drying machine with heat pump is provided The method of sequence, this method can be realized effective health effect, and not need the energy charge improved thus.Preferably, this is defended Raw program should the time as far as possible it is short, and the time of drying program should not caused to extend or only result in drying program as far as possible Short time extend.Task of the invention is also to provide the drying machine for being suitable for implementing this method.
The solution of the task according to the invention by the feature with corresponding independent claims, for implementing drying The method of sanitary course in machine and drying machine are realized.Side according to the present invention is enumerated in the corresponding subordinate claims The preferred embodiment of method and drying machine according to the present invention, wherein the preferred embodiment phase of drying machine according to the present invention The preferred embodiment of Ying Yu according to the method for the present invention, and vice versa, even if when this is not determined clearly herein.
Therefore, subject of the present invention is the method for implementing the sanitary course in drying machine, which, which includes, is used for The roller of washings to be dried；Process air circuit is disposed in the process air circuit for transmission process air Ventilation blower；Control unit；Heat pump with evaporator, liquefier, throttle and compressor；With at least one sensor, wherein By means of the humidity F of sensor monitoring washingsWReduction, and reaching predetermined lower limit humidity FW lowlimWhen make to divulge information The revolving speed u of machine is reduced and/or is improved the power consumption p of the compressor of power variable, thus reach in roller in order to effective At least 65 DEG C of temperature required for sterilization.
These measures generally result in the relatively rapid heating for the process air for leaving roller, so as to relatively rapidly simultaneously And therefore reach early to effectively sterilize required high temperature.
According to the present invention, it reduces the revolving speed u of ventilation blower and/or improves the power consumption p of the compressor of power variable, Until reaching at least 65 DEG C of process air, preferably at least 70 DEG C of temperature TH.Completely it is particularly preferred that for health effect The temperature T of process airHIn the case where not damaging washings in the range of 70 to 75 DEG C.
Further preferably, revolving speed u and/or power consumption p is so adjusted, so that the temperature T of process airHOne is maintained to give in advance Fixed period Δ t.Here, period Δ t be preferably at least 15 minutes, more preferably at least 17 minutes and Δ t it is completely special It is preferably in the range of 18 to 25 minutes.
According to the present invention, by means of the reduction of the humidity F of sensor monitoring washings.This can be in very different mode It carries out, wherein, may there is also the combinations of different measuring principles there may be the different measuring principles of sensor.It thus can It is wet for example with time correlation to measure the temperature on roller output end and/or the washings in relative air humidity or roller Degree.
The predetermined lower limit humidity F of washingsW lowlimCan according to the rules in different drying stages or Reach when transition between drying stage.According to the present invention, it has been shown that, lower limit humidity FW lowlimQuality about washings For be preferably in the range of 5 to 15%, particularly preferred 8 to 12%.Here, also mentioning " final residue humidity (ERF) ".
In a preferred embodiment, the signal of sensor is analyzed and processed, so as to determine dry from quasi-steady The dry stage to unstable drying stage transition, and make in the case where having determined that transition the revolving speed u of ventilation blower reduce and/or Improve the power consumption p of the compressor of power variable.
Concept " sensor " indicates single sensor or sensing system as its is used herein.
In a preferred embodiment, it is surveyed in drying program, especially in unstable drying stage by means of sensor Measure other sensor signal Si, and be analyzed and processed in terms of the drying of the enhancing of washings, so that ventilation blower The power consumption p of revolving speed u and compressor is improved corresponding to desired temperature and is corresponded to the increasing of desired temperature at any time in other words It is high and improve.That is, in this embodiment, even if reaching predetermined lower limit humidity FW lowlimLater also to drying process into Row monitoring.
Preferably, use conductivity sensor as sensor, wherein relatively to measure by conductivity sensor and time t The conductance L of washingsW, wherein as the predetermined lower limit conductance L for reaching washingsW minAnd/or it is used for conductance LWSubtract at any time Predetermined minimum value (the Δ L of small magnitudeW/Δt)minWhen, reach predetermined lower limit humidity FW lowlim。
In the case where using conductivity sensor in roller, can also especially it determine from quasi-steady drying stage to unstable The transition of drying stage.As the predetermined lower limit conductance L for reaching washingsW minAnd/or it is used for conductance LWThe amount reduced at any time Predetermined minimum value (the Δ L of valueW/Δt)minWhen, especially such case.The predetermined lower limit conductance L of washingsW minIt can be with Such as corresponding to state " ironing humidity ".According to the present invention, in transition, the relative air humidity on drum outlet starts significantly Decline.
In another preferred embodiment, on the output end of roller, the mistake of roller is left by humidity sensor measurement The relative humidity F of journey airrel.If measured relative humidity FrelReach corresponding to predetermined lower limit humidity FW lowlim's Value then makes the revolving speed u of ventilation blower reduce and make the power consumption p of compressor in predetermined period Δ tsetOn so mention Height makes it possible to achieve desired temperature and improves.
In addition, preferably by means of temperature sensor S in heat pump circuitT KMMeasure the temperature T of refrigerantKM, and so control The power consumption p of the compressor of power variable processed, so that temperature TKMIn TKM 1≤TKM≤TKM 2In the range of.And it is advantageous herein , by means of the temperature sensor S being arranged in heat pump circuitT KMMeasure the degree T of refrigerantKM, and it is fair meeting or exceeding Perhaps maximum refrigerant temperature TKM maxWhen, reduce the power consumption p of the relevant compressor of power.
Value TKM maxThe installation position of type and temperature sensor in heat pump circuit depending on refrigerant.Such as TKM max The manufacturer of refrigerant can be in close proximity to for the effective of refrigerant and reliably use illustrated maximum temperature.Separately One factor can be the maximum coil temperature (" coil temperature ") of the permission of the drive motor of compressor.The factor by Used insulation division influences, and for example, 115 DEG C.To TKM maxHaving another factor that is influential, playing limit is Used lubricant within the compressor.Excessively high temperature can cause to be carbonized and therefore lead to lubricant failure and last Compressor is caused to break down.One important factor is also the pressure of the subsequent gaseous refrigerant of compressor, and the pressure is necessary It is compared with the intensity of used pipe.
In drying machine operation, in order to safeguard that drying machine and washings to be dried in the drying machine are significant It is that the temperature of process air is not excessively high.It is preferred that being returned in the method according to the invention by means of being arranged in process air Temperature sensor S in roadT PLThe temperature T of measurement process airPLAnd in the maximum process Air Temperature for reaching predetermined permission Spend TPL maxWhen reduce the power consumption p of compressor.Simply by the presence of additional vent device, then the additional vent device is in the first step Compressor is set to cool down with ambient air in rapid.When necessary, in the second step generally in the case where not adjusting compressor By compressor cut off or in the case where adjusting compressor manipulation compressor permission minimum speed.After this just must Compressor is turned off when wanting.Preferably, when meeting or exceeding critical process air themperature TPL krit>TPL maxWhen, cut off compressor.Only Exist, temperature sensor ST PLIt is preferably placed between roller and evaporator.
In order to drive the compressor of roller, ventilation blower and (simply by the presence of) power variable, can for example be separated using three Drive motor.However, being proven advantageously, in order to drive ventilation blower and roller to use a common power variable Drive motor.In order to which the compressor of power variable generally uses an individual drive motor.
The compressor of power variable is preferably the compressor driven by BLDC motor, especially screw compressor or rolls to live Fill in compressor.
In accordance with the present invention it is preferred that the relevant compressor of power is the compressor of variable speed, the revolving speed of the compressor ωKChanged according to the sensor signal of the revolving speed u of ventilation blower and/or sensor, wherein store revolving speed in a control unit ωKWith the relationship between revolving speed u and/or sensor referred to above signal (such as humidity of washings).Herein preferably, turn The rotational speed omega of the variable compressor of speedKAccording to the conductance L as measured by conductivity sensor of washingsWAnd/or conductance is at any time Changes delta LW/ Δ t and change, wherein consider storage in a control unit, rotational speed omegaKWith measured conductance LWAnd/or Change with time Δ LWRelationship between/Δ t.
Preferably, in order to implement the method consider roller washings useful load.Consider to roll particularly by control unit The washings useful load of cylinder, mode is to store conductance L in a control unitW, power variable compressor power consumption Relationship between p and washings useful load.Here, the useful load can be manually inputted or be passed through by the user of drying machine Optionally suitable measuring device, such as scale in drying machine automatically determine.
In the method according to the invention, it can be advantageous to consider the external temperature T in the installation room of drying machineR.Because The waste heat losses of drying machine is related with ambient temperature.In the case where ambient temperature height, in drying machine can also be with Referred to as smaller relative to the temperature difference between ambient temperature to the radiating surface of stream interface, such as roller, this makes due to right The energy loss for flowing and generating is smaller.This causes heat pump circuit, the i.e. final temperature of refrigerant circuit higher, which can To be crucial and may cause connection ventilation device or other heat exchangers (as long as existing in drying machine).In existing skill In art, the derived heat from process air is usually adjusted by additional vent device.This can improve waste heat losses.By means of function The variable compressor adjusting heat pump circuit of rate avoids the problem.
Therefore, in a preferred embodiment, the method adapts to the external temperature of the installation room of drying machine, mode It is to pass through temperature sensor ST ARTemperature T in measurement installation roomR, and run with power consumption p the compression of power variable Machine, the power consumption additionally depend on measured temperature TR, so that the temperature of the refrigerant in heat pump circuit is in TKM 1≤ TKM≤TKM 2In the range of.Here, the compressor of power variable especially screw compressor or rolling piston compressor.Preferably, Use the compressor of rotational speed regulation as the relevant compressor of power, the rotational speed omega of the compressorKAccording to measured temperature TRAnd Variation.
Alternatively or additionally to this, according to external temperature TRThe revolving speed u for selecting ventilation blower, is stored up in a control unit thus There are revolving speed u and external temperature TRBetween relationship.These values can be advantageously also for the conductance L of washingsWDifferent values And it stores in a control unit.
Preferably, in the method according to the invention, the rotational speed omega of the compressor of variable speedKAccording to the conductance of washings LWWhen necessary according to the external temperature T in the installation room of drying machineRReferring to the rotational speed omega of storage in a control unitKWith conductance LWWhen necessary with temperature TRBetween relationship change.
Pass through temperature sensor ST ARTemperature T in measurement installation roomR, which can arrange on drying machine In different positions, such as with installation room it contacts or in the inside of drying machine.Certainly, it should protect in the latter case Card: the operation for generating heat and thus improving temperature of drying machine occurs for a long time or enough and due to suitable heat It is isolated and temperature T cannot or can hardly be influencedRMeasurement, so that work can be considered in the temperature measured by the inside of drying machine For for temperature TRMeasurement.
In preferred embodiment according to the method for the present invention, when from implementing last drying process and measurement process It has passed through predetermined time interval t from when air themperaturesetWhen, pass through the temperature sensing being arranged in process air circuit Device ST PLExternal temperature T in measurement installation roomR。
In the drying process, the temperature of process air ramps up.As already mentioned, lead in the heating period Process air and wet washing object are often heated to the first maximum temperature values TP.In order to send out temperature raising as rapidly as possible It is raw, in preferred embodiment according to the method for the present invention, make the relevant compressor of revolving speed in 0.9 to 1 times of pmaxRange Interior power consumption p is run, until reaching predetermined temperature TP, in the temperature, the temperature T of process airPLAt any time Between increase drop to minimum value.Here, pmaxIt is the maximum consumption of power of compressor.
Subject of the present invention or a kind of drying machine, the drying machine include the roller for washings to be dried；It crosses Journey air loop is disposed with the ventilation blower for transmission process air in the process air circuit；Control unit；With evaporation Device, liquefier, throttle and compressor heat pump circuit；With at least one sensor, wherein control unit is arranged for implementing A kind of method, in the method by means of the humidity F of sensor monitoring washingsWReduction, and it is predetermined reaching Lower limit humidity FW lowlimWhen make ventilation blower revolving speed u reduce and/or make power variable compressor power consumption p improve, from And reach in roller at least 65 DEG C required for effectively sterilizing of temperature.
The compressor used in drying machine according to the present invention is preferably screw compressor or rolling piston compressor, Especially rolling piston compressor.
As long as existing in drying machine according to the present invention, the temperature sensor preferably has with temperature sensitive point The elongate body at end.Preferred temperature sensor is NTC sensor.Advantageously, temperature sensor ST PLIn process air circuit It is tilted towards the direction of evaporator.
Drying machine according to the present invention generally have for collect be accumulated in evaporator and it is possible be accumulated in it is other The condensate pit of condensate liquid in heat exchanger.Come out from condensate pit, condensate liquid otherwise removed by emptying manually or Removed by being pumped out in condensate tank by means of condensate pump, and the condensate tank can manual emptying or Directly it is scavenged into waste water system.
In drying machine according to the present invention, heat pump and air-air-heat exchanger can be used simultaneously.Here, heat pump It can complement each other in the damp and hot process air of cooling with air-air-heat exchanger, such as thus supplement: especially exist Refrigerant enables air-air-heat exchanger in the case where facing overheat.
For relatively rapidly heating process air, additionally there may be electric heating in drying machine according to the present invention Device.When drying machine includes in one embodiment additional electric heater unit, can relatively rapidly be heated in drying machine Process air and thus, it is possible to relatively rapidly implement drying means.Certainly, possible energy thus can be interfered to save.
Drying machine of the invention preferably also has vision and/or the sense of hearing the display device, which makes it possible to To the user of drying machine show such as drying process operating parameter and/or it is expected that duration.
The present invention has dramatic benefit.Thus the present invention can be realized: effective hygienic journey can be implemented in drying machine Sequence can realize effective sterilization in the sanitary course in energy efficient mode.Finally, according to the method for the present invention can Realize the sanitary course of relative short time, wherein in embodiments of the present invention, drying program itself is implementing sanitary course In the case where do not extend.Due to the drying program of generally possible short period, i.e. shorter drying time, heat loss is reduced, This causes energy to be saved.In addition, being saved in the following manner to generate energy: not needing the excessively dry of washings.Even if working as root Only just implement in the case where 0% final remaining humidity according to method of the invention, the present invention also can be realized: sanitary course Always quickly it can run and terminate than sanitary course so far.
In addition, have the advantage that in embodiments with drying machine according to the present invention according to the method for the present invention can To implement that there is the drying program of sanitary course, different mounting condition and difference can be optimally considered in the sanitary course Weather condition and season, mode be consider drying machine installation room in external temperature.
Furthermore, it is possible to consider washings washing as being made of woollen fabrics, silk goods or open-work fabric The sensibility of object, mode are the duration adaptations of the temperature and sanitary course that can make process air in sanitary course In the type of washings.This can realize by changing the power consumption of the compressor of power variable, and mode is, such as really Customize the suitable ceiling temperature of cryogen.According to the present invention, the compressor of ventilation blower and power variable can also especially be made each other Mutually coordinate, and sanitary course is therefore made optimally to adapt to the type and magnitude of washings.
Detailed description of the invention
Other of the invention are obtained as the description of the embodiment next to method used in drying machine and the dryer Details.Here, with reference to Fig. 1 to 3 of attached drawing:
Fig. 1 shows the sectional elevation of drying machine according to first embodiment, can be implemented in the drying machine public herein The method opened.Other embodiments can be considered.
Fig. 2 shows the different change curves of the rotation speed change of ventilation blower after sanitary course starts.
Fig. 3 shows the different change curves of the power consumption variation of the compressor of power variable.
Specific embodiment
Shown in Fig. 1, according to first embodiment drying machine 1 has can be around the roller 2 of horizontal axis rotation As hothouse, the carrying piece 14 for moving washings during roller rotates is fixed on the drums inside.By means of logical Blower 12 guides process air in process air circuit 3 by roller 2.After passing through roller 2, damp and hot process is empty Gas is introduced in the evaporator 8 of heat pump 8,9,10,11, and the heat pump also has the compressor 11 of variable speed, 10 and of throttle Liquefier 9.Arrow shown in Fig. 1 shows the flow direction of air.
The refrigerant of heat pump 8,9,10,11 evaporated in evaporator 8 leads to liquefaction by the compressor 11 of variable speed Device 9.In liquefier 9, make refrigerant in the case where distributing heat to the process air flowed in process air circuit 3 Liquefaction.Then existing refrigerant passes through throttle 10 and is directed to evaporator 8 in liquid form, thus closes heat pump circuit It closes.Temperature sensor S between liquefier 9 and throttle 10T KM6 measure the temperature T of refrigerant in this embodimentK。
Temperature sensor S in the process air circuit being placed in drying machine 1 between roller 2 and evaporator 8T PL 5 The temperature T of measurement process air is used in shown embodiment herePLOr feelings prolonged enough are turned off in drying machine 1 For measuring the temperature T in installation room under conditionR, the temperature is in this embodiment it is also contemplated that for controlling sanitary course And the heat pump of drying machine or the drying machine.Certainly, in the other embodiments of heat pump drier, process air can be cancelled The measurement of temperature.
In embodiment out shown in Fig. 1, there are electric heater unit 13, which can be used for process sky The more rapid heating of gas.It is possible thereby to more quickly implement sanitary course.In other embodiments of the invention, Ke Yiqu Electric eliminating heating device 13, because the heating device leads to higher energy consumption.
In the drying machine 1 of Fig. 1, the air that is heated by liquefier 9 or electric heater unit 13 from rear, i.e. roller 2 with The bottom of aperture that the side opposite into door 17 of closing filling opening passes through the side is guided in roller 2, there with this Locate washings contact unshowned, to be dried, and flow to by the filling opening of roller 2 into the villus filter inside door 17 Net 21.Then, process air stream turns to downwards in entering door 17.Process air is supplied to steaming in process air circuit 3 Device 8 is sent out, heat, the moist process air cooling of load are made in the evaporator.Post-depositional moisture is collected in condensate pit 7 In, set out for example for example to be moved out to the moisture in unshowned condensate tank herein by pumping out therefrom.
In embodiment out shown in Fig. 1, roller 2 is supported by means of rolling bearing on rear bottom and at preceding bottom It being supported in portion by means of bearing cap 18, wherein roller 3 is placed on the slider bar 19 on bearing cap 18 by flange, and because And it is kept on front end.The control of machine 1 is dried by control unit 4, which can be passed through behaviour by user Make unit 20 to be adjusted.
The details (temperature, duration) of the implementation of sanitary course and sanitary course can be shown to by display device 16 The user of drying machine.Normally, display device 16 is also used for showing that the estimated of such as operating parameter and/or drying process continues Time.
In the method, process air is cycled repeatedly through through process air circuit 3, until sanitary course terminates and excellent Choosing reaches the desired aridity of clothing.The drying machine of Fig. 1 can be by the operation to heat pump and especially to the temperature of refrigerant Accurately monitoring and controlling to sanitary course is realized in the monitoring of degree, and mode is so to adjust ventilation blower 12 and compressor 11, make Can be reached for implementing sanitary course as rapidly as possible and be arranged minimum temperature, herein for 70 DEG C and one can be maintained The predetermined period.For this purpose, reducing ventilation blower revolving speed u as expected, and make power can simultaneously in this embodiment The power consumption of the compressor 11 of change improves.
Certainly it should be noted that being no more than the temperature T for process airPLIdentified maximum temperature Tmax。
Here in shown embodiment, roller 2 and ventilation blower 12 can by one it is common, in Fig. 1 not Electric notor show, power variable is BLDC motor (brushless DC electric motor, brushless dc here Motor) it drives.The electric notor of same unshowned another power variable is used for the compressor that driving power can be changed in Fig. 1.
In the method according to the invention, it is obtained by the sensor signal of analysis processing sensor and is opened for sanitary course Begin desired time point.The time point can with the drying stage that is occurred independently with the determination humidity phase coupling of washings It closes, such as advantageous 10% humidity in terms of the quality of wet washing object.The signal of analysis processing sensor can be passed through Track the humidity of these clothings.
It is shown in Fig. 1 go out, suitable for the embodiment for implementing drying machine according to the method for the present invention, use rolling Conductivity sensor 22 in cylinder 2 is used as such sensor, wherein relatively measures Fig. 1 by conductivity sensor 22 and time t In unshowned washings conductance LW.The humidity of washings and the conductance of especially wet washing object are from quasi-steady drying stage Reduce especially significantly when transitting to unstable drying stage.Therefore, the beginning of sanitary course can also be associated with the transition, Wherein, the revolving speed u of ventilation blower 12 is made to reduce and mention the power consumption p of compressor 11 in the case where transition has been determined It is high.As the predetermined lower limit conductance L for reaching washingsW minAnd/or reach for conductance LWThe magnitude reduced at any time it is pre- to Determine minimum value (Δ LW/Δt)minWhen, it determines at this time from quasi-steady drying stage to the transition of unstable drying stage.
In addition, being disposed on the output end of roller 2 in embodiment out shown in Fig. 1 and leaving rolling for measuring The relative humidity F of the process air of cylinder 2relHumidity sensor 23.
Fig. 2 shows the different change curves of the revolving speed u of the ventilation blower 12 after sanitary course the starts variation of t at any time, Wherein, the beginning can be carried out for example with entering in unstable drying stage.According to the expectation process of sanitary course, especially , according in order to sterilize and temperature to be achieved and the raised speed of temperature, the ventilation blower revolving speed u and power consumption p of compressor can for it To adapt to the reduced humidity of washings.Here, can realize that the revolving speed u's of ventilation blower is desired automatically or by user It reduces.Here, for the reduction, for example, ventilation blower revolving speed u from value constant or nearly constant during the quasi-steady stage to It is possible that the great-jump-forward of constant value, which reduces 24, during the unstable stage.But it is also possible to which the step of ventilation blower revolving speed u is arranged Formula reduces 15, wherein revolving speed u is reduced to constant value with relatively small step.In addition, such as ventilation blower revolving speed u's is gradual It is also possible for reducing 25 or linear and reducing 26.
Fig. 3 shows the power consumption p of the compressor 11 of the power variable after sanitary course starts, such as compressor rotary speed The different change curves of the variation of t at any time, wherein the beginning can be for example with entering unstable drying stage It carries out.According to the expectation process of sanitary course, in particular according in order to sterilize and temperature to be achieved and temperature ramp-up rate, compress The ventilation blower revolving speed u and power consumption p of machine can adapt to the reduced humidity of washings.
Here, the desired increase of the power consumption p of compressor can be carried out automatically or by user.Here, in order to The increase, such as power consumption p is from value constant or nearly constant during the quasi-steady stage to perseverance during the unstable stage It is possible that the great-jump-forward of fixed value, which increases by 29,.But it is also possible to which the ladder-type for being set as ventilation blower revolving speed u increases by 28, wherein Power consumption p is improved with relatively small step to constant value.In addition, the gradual increase by 30 of such as power consumption p or linear It is also possible for increasing by 27.Preferably, the increase of power consumption p is realized by the increase of the revolving speed of compressor.
Reference signs list
1 drying machine
2 rollers
3 process air circuits
4 control units
5 temperature sensor ST PL；For measuring the process air in the process air circuit between roller and evaporator Temperature TPL
6 temperature sensor ST KM；For measuring the temperature T of refrigerant in heat pump circuitK
7 condensate pits
8 evaporators
9 liquefiers
10 throttles
The compressor of 11 power variables
12 ventilation blowers
13 electric heater units
14 clothing carrying pieces, carrying piece
The ladder-type of 15 ventilation blower revolving speeds reduces
16 visions/sense of hearing display device
17 enter door
18 bearing caps
19 slider bars
20 operating units
21 lint screens
22 conductivity sensors (in roller)
23 humidity sensors (for determining relative air humidity)
The great-jump-forward of 24 ventilation blower revolving speeds reduces
The gradual reduction of 25 ventilation blower revolving speeds
The linear reduction of 26 ventilation blower revolving speeds
The ladder-type of the power consumption of 27 compressors, such as its revolving speed increases
The great-jump-forward of the power consumption of 28 compressors, such as its revolving speed increases
The gradual increase of the power consumption of 29 compressors, such as its revolving speed
The power consumption of 30 compressors, such as its revolving speed it is linearly increasing

Claims (15)

1. the method for implementing the sanitary course in drying machine (1), the drying machine are included for washings to be dried Roller (2)；Process air circuit (3) is disposed with the ventilation blower (12) for transmission process air in the process air circuit； Control unit (4)；With evaporator (8), liquefier (9), throttle (10) and compressor (11) heat pump circuit (8,9,10, 11)；With at least one sensor (5,6,22,23), wherein monitor the washing by means of the sensor (5,6,22,23) The humidity F of objectWReduction, which is characterized in that reaching predetermined lower limit humidity FW lowlimWhen make the ventilation blower (12) turn The power consumption p for the compressor (11) that fast u is reduced and/or made power variable is improved, thus reach in the roller (2) in order to Effectively required at least 65 DEG C of the temperature T of sterilizationH。
2. the method according to claim 1, wherein so adjust the revolving speed u and/or power consumption p, So that the temperature T of the process airHMaintain a predetermined period Δ t.
3. according to the method described in claim 2, it is characterized in that, the period Δ t is at least 15 minutes.
4. according to the method in any one of claims 1 to 3, which is characterized in that the sensor (5,6,22,23) Signal is analyzed and processed, so as to determine from quasi-steady drying stage to the transition of unstable drying stage, also, The revolving speed u of the ventilation blower (12) is set to reduce and/or make the compressor of power variable in the case where transition has been determined (11) the power consumption p is improved.
5. according to the method in any one of claims 1 to 3, which is characterized in that passed using the conductance in the roller (2) Sensor (22) is used as the sensor (5,6,22,23), wherein is relatively surveyed by the conductivity sensor (22) with time t Measure the conductance L of the washingsW, also, as the predetermined lower limit conductance L for reaching the washingsW minAnd/or reaches and be used for The conductance LWPredetermined minimum value (the Δ L of the magnitude reduced at any timeW/Δt)minWhen, reach predetermined lower limit humidity FW lowlim。
6. according to the method in any one of claims 1 to 3, which is characterized in that in the heat pump circuit (8,9,10,11) In by means of temperature sensor ST KM(6) the temperature T of refrigerant is measuredKM, and so control the compressor of power variable (11) the power consumption p, so that the temperature TKMIn TKM 1≤TKM≤TKM 2In the range of.
7. according to the method described in claim 6, it is characterized in that, by means of being arranged in the heat pump circuit (8,9,10,11) In the temperature sensor ST KM(6) the temperature T of the refrigerant is measuredKM, and in the maximum refrigeration for meeting or exceeding permission Agent temperature TKM maxWhen, reduce the power consumption p of the relevant compressor (11) of power.
8. according to claim 1 to method described in any one of 3,7, which is characterized in that in order to drive the ventilation blower (12) The drive motor of a common power variable is used with the roller (2).
9. according to claim 1 to method described in any one of 3,7, which is characterized in that the compressor of power variable It (11) is the compressor (11) driven by BLDC motor.
10. according to claim 1 to method described in any one of 3,7, which is characterized in that the relevant compressor of power (11) be variable speed compressor, the rotational speed omega of the compressorKAccording to the revolving speed u of the ventilation blower (12) and/or institute State the sensor signal variation of sensor (5,6,22,23), wherein store the rotational speed omega in described control unit (4)K With the relationship between the revolving speed u and/or the sensor signal.
11. according to the method described in claim 5, it is characterized in that, the relevant compressor (11) of power is variable speed Compressor, the rotational speed omega of the compressorKAccording to the revolving speed u of the ventilation blower (12) and/or the sensor (5,6, 22,23) sensor signal variation, wherein store the rotational speed omega in described control unit (4)KWith the revolving speed u And/or the relationship between the sensor signal.
12. according to the method for claim 11, which is characterized in that the revolving speed of the compressor (11) of variable speed ωKPass through conductance L measured by conductivity sensor (22) according to the washingsW minAnd/or the conductance LWChange at any time Change Δ LW/ Δ t and change, wherein consider the rotational speed omegaKWith the conductance L of measurementWAnd/or the Δ L that changes with timeW/ The relationship being stored in described control unit (4) between Δ t.
13. according to the method described in claim 5, it is characterized in that, considering the roller by described control unit (4) (2) washings useful load, mode are that the conductance L is stored in described control unit (4)W, power variable it is described Relationship between the power consumption p and the washings useful load of compressor (11).
14. according to claim 1 to 3,7, method described in any one of 11-13, which is characterized in that passed by means of external temperature Sensor (ST AR) external temperature T of the measurement in the installation room of the drying machine (1)RAnd according to the external temperature TRSelection institute The revolving speed u for stating ventilation blower (12), stores the revolving speed u and the external temperature in described control unit (4) thus TRBetween relationship.
15. drying machine (1), the drying machine includes the roller (2) for washings to be dried；Process air circuit (3), The ventilation blower (12) for transmission process air is disposed in the process air circuit；Control unit (4)；With evaporator (8), the heat pump circuit (8,9,10,11) of liquefier (9), throttle (10) and compressor (11)；With at least one sensor (5, 6,22,23), wherein described control unit (4) is arranged for implementing a kind of method, in the method, by means of the sensing Device (5,6,22,23) monitors the humidity F of the washingsWReduction, which is characterized in that described control unit (4) setting is used for Reaching predetermined lower limit humidity FW lowlimWhen so that the revolving speed u of the ventilation blower (12) is reduced and/or make the pressure of power variable The power consumption p of contracting machine (11) is improved, thus reach in the roller (2) at least 65 DEG C required for effectively sterilizing Temperature TH。
CN201680018535.9A 2015-03-26 2016-03-01 The method of the sanitary course in drying machine for implementing to have heat pump and drying machine applicable thus Active CN107407038B (en)

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PCT/EP2016/054305 WO2016150660A1 (en) 2015-03-26 2016-03-01 Method for carrying out a hygiene program in a dryer comprising a heat pump, and dryer which is suitable for this purpose

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