CN104619906A - Condenser dryer with means for determining the loading, and method for operating the same - Google Patents
Condenser dryer with means for determining the loading, and method for operating the same Download PDFInfo
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- CN104619906A CN104619906A CN201380048108.1A CN201380048108A CN104619906A CN 104619906 A CN104619906 A CN 104619906A CN 201380048108 A CN201380048108 A CN 201380048108A CN 104619906 A CN104619906 A CN 104619906A
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- heat exchanger
- washings
- condensation
- temperature
- loading
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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
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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
- 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
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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
- 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
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
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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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/58—Indications or alarms to the control system or to the user
-
- 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
- D06F58/24—Condensing arrangements
Abstract
The invention relates to a condenser dryer (1) having a process-air channel (2), a drum (3) for accommodating items of laundry, a heat exchanger (5, 15) for condensing water from humid/warm process air, a control device 10, at least one temperature sensor (27, 28, 29, 30) and a means (11, 20, 32) for determining the quantity of water condensed in the heat exchanger, wherein the at least one temperature sensor (27, 28, 29, 30) is arranged in a cooling-medium channel (24) and/or in the process-air channel (2) and the control device (10) is intended to determine loading of the drum (3) with items of laundry with reference to progression over time of the temperature measured by the at least one temperature sensor (27, 28, 29, 30) and progression over time of the quantity of water condensed. The invention also relates to a method which is suitable for operating said dryer.
Description
Technical field
The present invention relates to and a kind ofly to have with the condenser dryers (being also called for short with " dryer " below) asking for device of the loading of washings (below also with " loading " or " useful load " be called for short) and the method being suitable for running described dryer.The invention particularly relates to there is process air passage condenser dryers, for holding the device of the cylinder of washings, heat exchanger for the water in the damp and hot process air of condensation, control device, at least one temperature sensor and the amount for the water (below also referred to as " condensate liquid ") of determining condensation in a heat exchanger.
Background technology
Its operation principle does not need exhaust hose and very welcome with the condenser dryers being condensed into basis of the moisture by means of the evaporation of warm process air in washings, because they can be arranged in indoor bathroom or larger uptown laundry uses.In condenser dryers, air (so-called " process air ") moves in a loop closed to a great extent.Usually, first the process air first cooled is directed on heater by air blast.Then, dry warm process air enters in the cylinder as drying chamber, and described cylinder comprises the washings of humidity to be dried.In cylinder, the process air of heat absorbs the moisture in washings.Then moist process air is imported into heat exchanger from the cylinder for dewatering.Usually, the evaporimeter of air-air heat exchanger or heat pump uses as heat exchanger.The process air of damp warm is cooled wherein, thus the water condensation comprised in described process air.Then, the water through condensation is gathered in suitable collector usually, and being again supplied to heater with the air of drying and being then supplied to cylinder through cooling.
During each baking stage, different useful loads is in different situations, thus drying course and useful load are matched is significant.Otherwise if baking stage is only according to nominal load adjustment in dryer, then, such as when loading less, washings usually " is excessively dried " and is therefore consumed unnecessary energy.In addition, the furnace drying method of washings continues excessively long-time.These shortcomings can be overcome by the determination of useful load.This allows, and can mate furnace drying method and realize optimum oven dry result.In addition, also energy ezpenditure is reduced thus and therefore protection of the environment and save cost for user.
DE 10 2,008 025 496 A1 describes a kind of measurement mechanism of the information for asking for the current loading about washings dryer, wherein, substitutes ohm admittance ground, considers the TV assessed of arrangement of electrodes in admittance for acquisition of information.
DE 10 2,008 021 598 A1 describes a kind of washing and drying utensil and a kind of method controlled for it, and wherein, the control unit in this washing and drying utensil arranges the sensing data be used for based on loading sensor and controls drying course.In the method, Weight Loaded is detected by means of loading sensor.
DE 10 2,009 001 112 A1 describes a kind of loading of the cleaning-drum for monitoring washings dryer and/or the method for the aridity that monitors the washings put in cleaning-drum, and wherein, cleaning-drum drives by means of motor.At this, the measured value according to electric current infers the aridity of washings and/or the loading of cylinder.
Finally, DE 10 2,009 028 358 A1 describes a kind of washed articles treater tool, it has the cylinder for drying and/or wash washings of rotatably support, wherein, also considers that the electrical quantity of motor is for determining the quality (Masse) of the washings put in cylinder.
DE 42 43 594 C2 discloses a kind of method, wherein, according to the useful load of the temperature change of process air and the humidity value determination washings of process air.For this reason, described temperature change is asked on a time period determined by the temperature sensor at the outlet place being arranged in cylinder in process air stream.Additionally, the humidity of the air of being discharged by cylinder by means of humidity sensor measurement.Then, ask for washings quantitative value, its mode is, forms absolute summation and divided by 2 by temperature change and humidity value.By this washings quantitative value, washings quantity is defined as little, large or very large washings quantity.By humidity value, the method utilizes the parameter relevant with environment temperature, but wherein, ignores environment temperature, and this causes inaccuracy.
DE 10 2,006 037 239 A1 describes the method for the oven dry for controlling moist washings and washings dryer or drying and washing machine.At this, drying course is terminated when considering at least one humidity value of washings to be dried or corresponding measured value, wherein, additionally, to consider in the oven dry of washings when reaching predetermined humidity value or corresponding measured value or afterwards striked, dry for terminating targetedly corresponding to the corresponding washings type of washings cylinder and/or the temperature parameters of corresponding loading condition.
DE 44 11 958 A1 describe a kind of there is electronic program control device and have rotatably support cleaning-drum and for carrying from the ventilation blower of the other oven dry air through via flow of calandria by cleaning-drum, wherein, the rising of the electrical resistance time of determination and analysis process drying article and the temperature difference that is made up of drum inlet temperature and drum outlet temperature.Draw the conclusion of washings type about drying article and washing weight by means of electronic installation thus, and the data obtained in this way are supplied to further Process flowchart for the drying procedure selected by presetting apparatus as controling parameter.
DE 199 18 877 A1 describes a kind of method for estimating loading and/or baking duration in family expenses washings dryer before drying course carries out, wherein, the parameter relevant with washings humidity and the yardstick for drying the temperature of the air stream of washings before or after contacting with washings at air stream is asked for.Before or after it contacts with washings, the parameter relevant with washings humidity is used for estimating to load and/or baking duration by the yardstick of the temperature of air stream in combination.As the parameter relevant with washings humidity, especially ask for the yardstick of the resistance for washings.
DE 199 39 274 A1 describes a kind of method for asking for the drying time of the expectation of the drying course in washings dryer by the drying procedure at drum inlet and drum outlet place continuous print temperature detection and humid control, wherein, after the starting of utensil, at least use at least two measurement parameters be independent of each other early and make it be correlated with.As the example for measuring parameter, enumerate the resistance/admittance of washings when drying course starts, temperature after the heating means are switched at the drum outlet place of process air time-varying process and respectively can thus at parameter and the more other measurement parameter relevant with temperature of mathematics/physically derive.
Summary of the invention
In this context, task of the present invention is, provides the condenser dryers (being also called for short with " dryer " below) having and better load and ask for.In addition, task of the present invention is, provides the method being suitable for running this dryer.
According to the present invention, the solution of this task is by a kind of condenser dryers and be a kind ofly suitable for method that run this drying machine, that have the corresponding independently feature of claim and realize.According to preferred embodiment the listing in the corresponding dependent claims preferred embodiment and according to method of the present invention of dryer of the present invention.According to dryer of the present invention preferred embodiment corresponding to method according to the present invention preferred embodiment and vice versa, even if this does not clearly state at this.
Therefore, theme of the present invention is condenser dryers, it has process air passage, for holding the cylinder of washings, for the heat exchanger of the water in the process air of condensation damp warm, control device, the device of at least one temperature sensor and the amount for the water of determining condensation in described heat exchanger, wherein, at least one temperature sensor described to be arranged in coolant guiding channel and/or in described process air passage and the time-varying process that described control device is arranged for the amount according to the time-varying process by the temperature of at least one temperature sensor measurement described and the water through condensation asks for described cylinder with the loading of washings.
At this, load the dry mass (Trockenmasse) being interpreted as the washings to be dried put in cylinder.
According to the present invention, use at least one temperature sensor.If use an only temperature sensor, then especially measure temperature on the position of this temperature sensor over time, and is considered to use it for simultaneously and determine loading.If use more than one temperature sensor, then also can measure the temperature difference between two positions such as in process air passage, and especially also follow the trail of it over time.If not only arrange a temperature sensor respectively in process air passage but also in coolant guiding channel, then can measure the temperature in two passages and consider that described temperature is loaded for determining over time simultaneously.
Therefore, at least two temperature sensors preferably used according to the invention.
At this, the type of temperature sensor is not limited, but preferred NTC sensor.
Condenser dryers one preferred embodiment in, the first temperature sensor is arranged in the entrance for cooling medium or the exit of heat exchanger in coolant guiding channel, preferably in porch.
In another preferred embodiment of condenser dryers, the second temperature sensor is arranged in the exit for cooling medium of heat exchanger in coolant guiding channel.
In addition, condenser dryers according to the present invention has heater usually, and wherein, described heater is electric heater unit or gas-heating apparatus especially, wherein, preferably uses electric heater unit.Heater be used for process air in the cylinder importing to condenser dryers before heating.
In addition, in order to course of conveying air, condenser dryers has air blast usually in process air passage.
In condenser dryers according to the present invention, there is the heat exchanger that at least one dewaters for making the process air of damp warm, thus be not directed in the holding chamber of dryer from the process air of the damp warm of cylinder.Instead, at least partially dewatered from the process air of damp warm by condensation.This is realized by the cooling of the process air of damp warm usually.In order to make process air dewater, described heat exchanger uses cooling medium, such as cooling-air or cold-producing medium usually.Then, be usually first gathered in condensation liquid bath or by condensate pump by the water condensed and pump, such as pump is in condensate tank.
Radiator, the especially evaporimeter of heat exchanger especially air-air heat exchanger or heat pump.At this, hot pump characteristics is two heat exchangers, i.e. radiator, thermal source and pump installation, in radiator, receive heat, and in thermal source, release heat, heat is transferred to thermal source from radiator when temperature change by described pump installation if desired.In the condenser dryers of heat pump being equipped with type of compressor, cooling that is warm, that carry moist process air substantially heat pump also referred to as the radiator of evaporimeter in carry out, there, the heat transmitted is for evaporating the cold-producing medium circulated in the pump installation being configured as loop.Heat pump is supplied to by the compressor of cold-producing medium by thermal source in pump installation evaporated due to heating, described thermal source is the liquefier for cold-producing medium, there, the releasing heat due to the liquefaction of the cold-producing medium of gaseous state, described heat is used for heating process air before process air enters into cylinder.After liquefier, now liquid cold-producing medium is expanded in the choke valve of pump installation, reduce its intrinsic pressure thus and the cold-producing medium of described liquid state finally turns back to evaporimeter.
In condenser dryer according to the present invention, in any case the evaporimeter of the evaporimeter of preferred air-air heat exchanger or heat pump, particularly preferably heat pump is arranged in process air passage.
Preferably in air-air heat exchanger, there is cooling air channels, the air especially from the holding chamber of dryer is directed across this cooling air channels as cooling medium by means of cooling-air blower.
In condenser dryers according to the present invention, measure the time-varying process of the amount of the water through condensation---i.e. condensate liquid---produced, and consider to use it for the loading determined with washings simultaneously.For this reason, condensation rate K describes by the amount of the water of washings to be dried condensation about the time period determined.Therefore, condensation rate K is below applicable to:
K＝m
H2O/Δt
Here, m
h2Obe the amount of the condensed water obtained from washings to be dried, and Δ t it is the corresponding time period.According to the present invention, this time period Δ t is limited only within it sufficiently greatly reliably to determine in the scope of condensation rate K, wherein, and corresponding minimum time section Δ t
minusually relevant with for determining the method for condensation rate.
The amount of the amount of the water through condensation accumulated in a heat exchanger can being determined in a different manner, wherein, in order to improve the degree of accuracy, also multiple defining method can be combined mutually.For this reason, such situation is considered: first condensate liquid is gathered in the condensation liquid bath be arranged in below heat exchanger usually.Then, can measure by means of level sensor the amount exceeding the condensate liquid of water level in condensation liquid bath.
Therefore, condenser dryers one preferred embodiment in, in the condensation liquid bath below heat exchanger or arrange level sensor in condensate tank.
Usually, pump condensate liquid for carry out removing or for intermediate storage in condensate tank.For this reason, condensate liquid passage, between condensate liquid groove and condensate tank, arranges that in described condensate liquid passage condensate pump is used for transport of condensate usually.Alternatively, in order to remove, condensate liquid also can simply by condensate liquid passage pump in sewer pipe.
In any case, when using condensate liquid passage, advantageously can consider that flow sensor is used for determining condensation rate, the amount of the condensate liquid that described flow sensor measurement is flow through.This is feasible when directly removing condensate liquid, but when condensate liquid is carried so that good when intermediate storage is in condensate tank by condensate liquid passage.
When using level sensor or flow sensor, relatively little time section can be selected, in described time section, measured value accurately is also provided according to used sensor, but, when the quantity that the pump by the pump for pumping condensate liquid circulates is asked for, time period Δ t
minpreferably at least two pump circulations should be comprised.Here, particularly advantageously, total time period Δ t is arranged in main baking stage, thus, and Δ t
maxbe equivalent to the duration of main baking stage.At this, main baking stage be drying course with the next stage, in this stage, the main oven dry that washings occurs when process air temperature is almost constant.
According to condenser dryers of the present invention especially washings dryer self or drying and washing machine.Here, drying and washing machine is combined utensil, and this combined utensil has the washing function for washing washings and the drying function for drying moist washings.
Advantageously, dryer there is the optics of the different conditions for dryer and/or the display unit of acoustics.To this, preferably use the display unit of optics.Such as display unit can by output character or the information being provided the operation about dryer by the LED flash of different color, such as, about useful load or about the drying procedure correspondingly carried out matchingly or the remaining remaining time about drying procedure.
In addition, theme of the present invention is the method for running condenser dryers, described condenser dryers has process air passage, there is the cylinder of the washings be placed on wherein, for the heat exchanger of the water in the process air of condensation damp warm, control device, the device of at least one temperature sensor and the amount for the water of determining condensation in described heat exchanger, wherein, at least one temperature sensor described to be arranged in coolant guiding channel and/or in described process air passage and the time-varying process that described control device is arranged for the amount according to the time-varying process by the temperature of described temperature sensor measurement and the water through condensation asks for described cylinder with the loading of described washings, wherein in the process, for the time period Δ t that at least one is predetermined
1ask for the amount of the time-varying process by the temperature of at least one temperature sensor measurement described and the water through condensation time-varying process and by with store in described control device, associating between these time-varying processes and the loading of described cylinder ask for described cylinder with the loading of washings.
, load the dry mass being interpreted as the washings to be dried put in cylinder here, described dry mass does not change on the duration of method according to the present invention and especially implemented drying procedure.Therefore, loading determine only to need once during drying procedure according to of the present invention, determine although described also can frequently carry out if desired.
According to the present invention, for determine the amount of the water of condensation in a heat exchanger the level sensor of device especially in condensation liquid bath or condensate tank, be flow sensor or condensate pump, its especially such function condensate pump relevant with the minimum volume of condensate liquid, thus the quantity of pump circulation within the predetermined time period can be considered as the yardstick of the amount being used for carried and therefore produced condensate liquid.
By the level sensor in condensation liquid bath or in condensate tank, condensation rate can be inferred in a straightforward manner.For this reason, such as, on defined time period Δ t, measure water level, and first ask for the amount m of the water condensed by washings to be dried according to the known size of condensation liquid bath
h2O, then draw condensation rate K thus.
If use level sensor, then do not limit its type according to the present invention.But, preferably use the level sensor of simulation.But, such as, also because other reasons at condensation liquid bath or can arrange level sensor in condensate tank, then also can access described level sensor.
Therefore, preferably ask for the time-varying process of the amount of the water through condensation, i.e. condensation rate by means of level sensor, described level sensor is arranged in the condensation liquid bath of heat exchanger arranged beneath or is arranged in condensate tank.
Alternatively, preferably, in condensate liquid passage, flow sensor is arranged.Here, condensate liquid passage is such passage, and condensate liquid is transported in the channels, such as, transport to condensate tank from condensation liquid bath.Also can infer condensation rate in a straightforward manner by the flow sensor arranged like this, such as its mode is, measuring flow on defined time period Δ t, first determines the amount m of the water condensed by washings to be dried thus
h2O, then draw condensation rate K thus.Therefore, for described defining method alternatively or addedly, condensation rate is asked for by means of the flow sensor be arranged in condensate liquid passage.
Usually the condenser pump being used for transport of condensate is also there is in condenser dryers.Usually, transport condensate liquid by means of condensate pump, can control in time or " event control " described condensate pump.At this, control in time to mean that the predetermined time value according to such as in program process controls." event control " means and triggers pump when the water yield determined.When the pump of " event control ", i.e. the condensate pump just work when there is the predetermined water yield determined usually, wherein, usual pump is then with predetermined constant transmission power work.If do not reach the predetermined water yield, then turn off pump.Therefore, draw the operation of the pump with different operation phase and stop phase in a word, wherein, according to duration of operation phase within the predetermined time period and therefore within the time period determined the quantity of pump circulation can infer carried and therefore accumulated in a heat exchanger condensing liquid quantity.
Therefore, method according to the present invention one preferred embodiment in, by means of the condensate pump arranged in condensate liquid passage for time per unit pump circulation quantity ask for condensation rate.
If dryer is equipped with the pump of time controling, then preferably, condensation rate is asked for by level sensor or flow sensor.In the dryer of pump with event control, preferably according to the quantity determination condensation rate of the circulation of pump in the time period Δ t determined.This has the following advantages: do not need the sensor added.
In the method according to the invention, preferably in the coolant guiding channel of heat exchanger with the temperature T of the first temperature sensor measurement at the porch cooling medium of heat exchanger
kEwith with the temperature T of the second temperature sensor measurement in the exit of heat exchanger
kA, and consider the temperature difference Δ T of cooling medium
k=(T
kA-T
kE) time-varying process for determining that cylinder is with the loading of washings, to this, in control device, Δ T is stored for the different value through the water of condensation, the amount of---i.e. condensate liquid---
kand the association between loading.
In a preferred embodiment, in order to determine that described cylinder is with the loading of washings, consider that additionally store in described control device, the time-varying process in the temperature by least one temperature sensor measurement described, the water through condensation the time-varying process of amount, the temperature difference Δ T of described cooling medium
k=(T
kA-T
kE) time-varying process and described cylinder and/or the rotating speed of process air air blast and the heating power of described heater and described cylinder with the association between the loading of washings, wherein, T
kEthe temperature of cooling medium described in the porch of described heat exchanger, T
kAit is the temperature of cooling medium described in the exit of described heat exchanger.
Thereby, it is possible to consider the rotating speed of cylinder.The rotation of cylinder affect the distribution of washings in cylinder and therefore influence process air via the air-flow of cylinder.In addition, affect oven dry thus because first usually carry out the skin drying of washings, and therefore should preferably consider moist washings for warm and dry process air can contact.
In order to improve the degree of accuracy of loading and determining, arrange in one preferred embodiment: in order to determine to load, additionally use humidity sensor, the humidity of washings determined by described humidity sensor in cylinder.Especially conductivity sensor can be used as humidity sensor, namely such sensor, in the sensor, the humidity of washings can be measured by the electric conductivity relevant with humidity of washings.Electrode such as in the bearing (ball) cover of cylinder uses as humidity sensor.
In addition, also humidity, the i.e. aridity of washings can be asked for by the motor current of observation within the predetermined time period and the power outputted on electric drive motor, because current gradient and/or power gradient become less along with the humidity of the reduction of washings.
If in order to determine to load the humidity relevant with the time additionally considering washings, then this has the following advantages: also can ask for the value accurately for loading under very different conditions, such as when in drying course relatively evening time just determine loading or when having there is the washings of relatively dry in dryer.
Such as in EP 2 227 585 B1, describe a kind of suitable humidity determining device and a kind of method for running such condenser dryers.
Usually, in washings dryer, furnace drying method is divided into three phases.First carry out the heating period, during this heating period, rise, until reach the temperature value determined at the entrance of cylinder or the temperature of exit process air in observed position, such as.Be main baking stage after which, in described main baking stage, under the thermodynamic state that standard is static, run dryer, namely the temperature of process air almost remains unchanged on observed position.Therefore, this stage is also referred to as " equilibrium stage ".When reaching value (threshold value) of determination of process air temperature, main baking stage starts, and the drying course of the continuation of washings occurs when process air temperature is almost equal.During this stage, carry out the main oven dry of washings.Then, furnace drying method terminates with cooling stage, in described cooling stage, turns off heater.
In the heating period, by least one temperature sensor measurement temperature and/or temperature difference time-varying process with the correlation relative complex of the loading of washings.Therefore preferred, in order to determine to load, store as much as possible about the data in the association between temperature value and condensation rate etc. of loading and measure in the heating period in control device.On the other hand, drying course determination early or with load match be worth expect.
Therefore, method according to the present invention one preferred embodiment in, during the heating period and/or when the main drying course stage starts, ask for loading.In the particularly preferred embodiment of one, ask for loading when main baking stage starts.Particularly preferably be at this, the time period for asking for condensation rate Δ t is little as far as possible and be therefore equivalent to Δ t
min.Such asking for of loading B can realize the further change procedure of drying course and mating early of loading.
The amount m of the water condensed by washings to be dried can be asked in a different manner
h2Otherefore condensation rate K is asked for.Such as can on the defined time period, measure the water level in condensate tank(trap) or in condensing container by level sensor and infer condensation rate K thus.Alternatively, when time controling condenser pump, the water yield of carrying within the time period determined can be measured by means of flow sensor.
According to the present invention, load and determine to comprise asking for of condensation rate K.So, for different condensation rates, in control device, usually store the corresponding value for loading.Load especially relevant to condensation rate K, because when washings loads little, process air absorbs less moisture from washings than when washings loads large.That is, when loading large, condensation rate K is high, and when loading little, condensation rate K is less.Usually, condensation rate has nothing to do with the initial humidity of washings to a great extent.The duration of the usual major effect drying course of initial humidity of washings, so but affect condensation rate hardly.
Usually, condensation rate K is subject to the cooling medium T in the heat exchanger for making process air dewater fatefully
ktemperature impact.Cooling medium in the heat exchanger for making process air dewater contributes to cooling procedure air and therefore causes desired condensation.Therefore, the temperature T of cooling medium
kless, then condensation rate K is larger.The temperature T of cooling medium
kcan such as change according to the environment temperature of washings dryer.Described association especially becomes obvious in the washings dryer with air/air heat exchanger, surrounding air uses as cooling medium by described air/air heat exchanger, and therefore in described air/air heat exchanger, condensation rate K is relevant with environment temperature.Therefore, large condensation rate K not only shows high loading and/or low environment temperature.
This means, so arrange at least one temperature sensor, make it can ask for the temperature T of cooling medium
k.Here, coolant guiding channel normally directly surrounds the device of cooling medium, be such as the cooling-air guider of the export orientation that the entrance entering washings dryer from cooling-air is discharged to it from washings dryer when air/air heat exchanger, or be the corresponding guider of cold-producing medium when heat pump dryer.
Therefore, in order to determine the loading of washings dryer, not only ask for the dependence with condensation rate K, and ask for and cooling medium T
kthe dependence of temperature, and consider the determination of described dependence for loading by the suitable association stored in control device.At this, the moment preferably within time period Δ t asks for cooling medium T
ktemperature, within the described time period, also determine condensation rate.
In addition, preferred according to the present invention, within the identical time period, carry out the tracking in time of temperature, temperature difference, condensation rate etc.Here, can measure in one or more time section.
Usually determine that washings dryer is with the loading of washings, its mode is, for the different temperature T of different condensation rate K at cooling medium in control device
kthe lower corresponding value stored respectively for loading B.Therefore, it is possible to determine exactly to load B.
According to the present invention, temperature sensor is preferably placed in the cooling medium porch of heat exchanger.This means, temperature sensor is arranged in the following position in coolant guiding channel, and in this position, cooling medium enters in heat exchanger.Such as, this is cooling-air to the in-position in air/air heat exchanger or cold-producing medium to the in-position in evaporimeter.Can be drawn about cooling medium T by this kind of layout
kthe conclusion as far as possible accurately of temperature, then, described temperature determines the condensation rate K in the device for making process air dewater.
In the particularly preferred embodiment of one, other temperature sensor is arranged in the cooling medium exit of the device for making process air dewater.At this, this other temperature sensor is arranged in the following position in coolant guiding channel, and in this position, cooling medium is discharged from heat exchanger.Such as this is the drain position that cooling-air is discharged from drain position or the cold-producing medium of air/air heat exchanger discharge from evaporimeter.The temperature T at its porch cooling medium of cooling medium can be asked in this way
kEwith the temperature T of the exit cooling medium of discharging from the device for dewatering at it
kAbetween temperature difference Δ T
k.The temperature difference Δ T of cooling medium
kthe conclusion of " cooling power " about heat exchanger can be realized.Therefore, provide special accurately for determining the basis of loading.In this embodiment, especially according to condensation rate K and two temperature value T
kEand T
kAdetermine to load, or according to condensation rate K and temperature difference Δ T
kdetermine to load, usually by the storage of corresponding data in control device being determined load.Therefore, it is possible to determine exactly to load.
If be present in condenser dryers, then condensing container can be arranged in condenser dryers regularly or removably.
As determining that washings dryer is with the result of the loading of washings, can implement and load the furnace drying method coordinated mutually.Therefore, the duration of the power of heater, blower speed (if existing, process air air blast, cooling-air blower), drum rotation speed and/or furnace drying method can especially suitably be selected, to realize optimum oven dry result.
The present invention has the following advantages: can run dryer with better efficiency.The present invention especially allows, and the change procedure of furnace drying method is matched with loading respectively.Avoid insufficient oven dry of washings thus or excessively dry.Especially desired final residue humidity can be realized by the present invention.Therefore, user can select, and he expects washings many " drying ".In addition, by avoiding over-dryingly also protecting washings.
In addition, when being less than the useful load of nominal load, having the following advantages according to of the present invention coupling as much as possible of the loading of furnace drying method and described reduction: than realizing the shortening of drying time and the energy ezpenditure of reduction when known furnace drying method.
At this, the present invention is realized by the use of multiple defining method, can very accurately determine to load.
Accompanying drawing explanation
Fig. 1 and 2 with reference to accompanying drawing draws other details of the present invention by the following description of two embodiments for dryer according to the present invention of not carrying out limiting, can be to implement a methodology in accordance with the present invention in described dryer.Accompanying drawing illustrates:
Fig. 1 illustrates the vertical section of condenser dryers according to first embodiment of the invention, and described condenser dryers has the evaporimeter of heat pump as the heat exchanger for making process air dewater;
Fig. 2 illustrates the vertical section of condenser dryers second embodiment of the invention, and described condenser dryers has air/air heat exchanger as the heat exchanger for making process air dewater;
Detailed description of the invention
The flow direction of process air is shown with the arrow of the arrow head filled up in fig 1 and 2.
Therefore, Fig. 1 illustrates the vertical section of condenser dryers 1, the cylinder 3 that the evaporimeter and having that described condenser dryers has heat pump 12,13,14,15 as heat exchanger 15 can rotate around horizontal axis, as drying chamber, is fixed with the carrying member 21 for making washings move during drum rotating within described drying chamber.Carrying member 21 is provided with humidity sensor 34---it is configured as conductivity sensor here, can determine the humidity of the washings put in cylinder.In the process air passage 2 closed, by means of process air air blast 6, process air is directed on electric heater unit 4.Then arrived in cylinder 3 at this by the process air heated, there, take moisture away from the washings of unshowned humidity in FIG.At this, being electrically heated the process air of device 4 heating from rear, namely being imported cylinder 3 by its bottom of punching from the side opposite with drying gate 22 of cylinder 3.The process air of damp warm is left cylinder 3 by fine hair grid (Flusengitter) 31 and in process air passage 2, is flow to the evaporimeter 15 of heat pump.In evaporimeter 15, in heat pump circuit 12,13,14,15, the cold-producing medium of circulation is evaporated due to the heat exchange of the process air with damp warm and is supplied to liquefier 12 by compressor 13.At this, humidity, warm process air is cooled in the evaporimeter 15 of heat pump 12,13,14,15, and heat pump be directed at liquefier 12 by the cold-producing medium evaporated by compressor 13, there, cold-producing medium passes through to liquefying through cooling and the process air heat release through dewatering of flowing in process air passage.Then the cold-producing medium existed in liquid form is directed at evaporimeter 15 again by choke valve 14, and refrigerant loop is closed thus.
In the first shown in FIG embodiment, first temperature sensor 27 is arranged in the porch that cold-producing medium enters evaporimeter 15, and the second temperature sensor 28 is arranged in the exit that cold-producing medium is discharged from evaporimeter 15, they measure the corresponding temperature T of the cold-producing medium of circulation in heat pump circuit 12,13,14,15
kEand T
kA.
In evaporimeter 15, the condensate liquid of accumulation to be gathered in condensation liquid bath 17 and by means of condensate pump 20 pump in condensate liquid passage 18 in condensate tank 19.Level sensor 11 is arranged in condensation liquid bath 17, and here, the float of level sensor and permanent magnetism is configured as reed contact (Reed-Kontakt) in combination.
Can so control condensate pump 20, it is only started when the condensate liquid of predetermined minimum volume, but, when lower than interrupt when this value its run.Then, the quantity circulated by time per unit pump can infer amount, the i.e. condensation rate of the condensate liquid that time per unit produces.
To this alternatively or addedly, for determine condensation rate can in condensate liquid passage 18 use traffic meter 32.
In embodiment shown in FIG, cylinder 3 bottom place in the wings supports by means of swivel bearing and supports by means of bearing (ball) cover 7 in front, wherein, therefore remain on leading section on cylinder 3 is supported on bearing (ball) cover 7 sliding strips 8 with edge (Krempe).The control of dryer can be undertaken by control device 10, and described control device 10 can be regulated by operating unit 9 by user.
Other state that is that display unit 33 can realize striked loading or dryer, as the display of the remaining runtime of such as furnace drying method.
In the first shown in FIG embodiment, for determining the loading with washings, dryer especially has control device 10, level sensor 11 and the first temperature sensor 27 and the second temperature sensor 28.When main baking stage starts, namely when just reaching the predetermined threshold value of process air temperature, at time period Δ t
1on to measure water level in condensation liquid bath 17 by means of level sensor 11.By means of these data, in control device 10, first ask for the amount m of the water through condensation according to the size stored of condensation liquid bath 17
h2OX.Then, according to the time period Δ t determined
xdetermine condensation rate K
x.In addition, with time period Δ t
1beginning side by side, measure by two temperature sensors 27 and 28 and be transmitted in the temperature T of the cold-producing medium of circulation in heat pump circuit 12,13,14,15 to control device 10 simultaneously
kEand T
kA.First by described temperature T in control device 10
kEand T
kAask for the temperature difference Δ T of cold-producing medium
kx.Then, by so determine, be used for condensation rate K
xwith the temperature difference Δ T of cold-producing medium
kxvalue with store in control device 10, for the temperature difference Δ T of condensation rate K and cold-producing medium
kvalue compare, and ask for when described value is consistent correspondingly store, for loading the value of B.
Then, according to the loading values so asked for, in control device 10, optimize the further change procedure of furnace drying method here matchingly with the mode do not described in detail and loading.
Fig. 2 illustrates the vertical section of the condenser dryers according to another embodiment of the present invention, and this condenser dryers has air/air heat exchanger as the heat exchanger for making process air dewater.
Substitute evaporimeter ground, in the second shown in fig. 2 embodiment, use air/air heat exchanger 5.In this dryer, process air is substantially as being directed to shown by Fig. 1.But moist, warm process air in order to the evaporimeter not being directed to heat pump by process air passage 2 that dewaters, and is directed to air/air heat exchanger 5 after discharging from cylinder 3, and process air is cooled there.There, due to cooling, the condensate moisture absorbed from washings by process air, and be gathered in condensation liquid bath 17.Level sensor 11 is arranged in condensation liquid bath 17.
Different from first embodiment of Fig. 1, warm, be loaded with moisture, from the cooling of the process air of cylinder 3 in air/air heat exchanger 5 by carrying out with the cooling-air heat exchange as cooling medium.Described cooling-air to be entered cooling air channels 24 and by cooling-air blower 25 by cooling air intake 23 from the holding chamber of dryer 1 and is carried through air/air heat exchanger 5 until cooling-air outlet 26.
In the second shown in fig. 2 embodiment, the first temperature sensor 29 is arranged in the porch that cooling-air enters air/air heat exchanger 5, and the second temperature sensor 30 is arranged in the exit that cooling-air is discharged from air/air heat exchanger 5.The temperature T of these two temperature sensor measurement cooling-airs
kEand T
kA.
Can so control condensate pump 20, it is only started when the condensate liquid of predetermined minimum volume, but, when lower than interrupt when this value its run.Then, the quantity circulated by time per unit pump can infer the amount of the condensate liquid that time per unit produces.
To this alternatively or addedly, for determining this condensation rate, can in condensate liquid passage 18 use traffic meter 32.
In the embodiment of Fig. 2, process air air blast 6, cooling-air blower 25 and cylinder 3 are driven by identical motor 16, and wherein, air blast 6 and cooling-air blower 25 are positioned on the reverse side of motor 16.
In the second shown in fig. 2 embodiment, for determining the loading with washings, dryer especially also has control device 10, level sensor 11 and the first temperature sensor 29 and the second temperature sensor 30 in the coolant guiding channel 24 being configured as cooling air channels.With the first shown in FIG embodiment similarly, when main baking stage starts, at time period Δ t
yon measure the water level in condensation liquid bath 17 by means of level sensor 11 and in control device 10, determine condensation rate K according to described water level.In addition, with time period Δ t
1beginning side by side, measure by temperature sensor 29 and 30 and transmit the temperature T of cooling-air to control device 10 simultaneously
kEand T
kA.By temperature T
kEand T
kAfirst the temperature difference Δ T of cooling-air is asked in control device 10
k.Then, by so determine, the temperature difference Δ T that is used for condensation rate K and cooling-air
kvalue with store in control device 10, for the temperature difference Δ T of condensation rate K and cooling-air
kvalue compare, and ask for that correspondingly store, for loading value when described value is consistent.
Carrying member 21 is provided with humidity sensor 34, and it is configured as conductivity sensor here, can determine the humidity of the washings put in cylinder.
In addition, the reference marker do not listed separately has the meaning identical with for Fig. 1.
Then, in this second embodiment, in control device 10, also determine the further change procedure of furnace drying method according to the loading values so asked for, wherein, the loading with washings can be considered.
List of reference signs
1 dryer, condenser dryers
2 process air passages
3 cylinders
4 heaters, especially electric heater unit
5 heat exchangers; Air-air heat exchanger
6 process air air blasts
7 bearing (ball) covers
8 sliding strips
9 operating units
10 control device
11 level sensors
12 liquefiers
13 compressors
14 choke valves
15 evaporimeters
16 motors
17 condensation liquid baths
18 condensate liquid passages
19 condensate tank
20 pumps, condensate pump
21 (washings) carrying member
22, oven dry gate
23 cooling air intakes
24 coolant guiding channels; Cooling air channels; Coolant channel
25 cooling-air blowers
26 cooling-air outlets
27 the first temperature sensors in coolant channel
28 the second temperature sensors in coolant channel
29 the first temperature sensors in cooling air channels
30 the second temperature sensors in cooling air channels
31 fine hair grids
32 flow sensors
33 display unit, optics/acoustics
Claims (15)
1. a condenser dryers (1), it has process air passage (2), for holding the cylinder (3) of washings, for the heat exchanger (5 of the water in the process air of condensation damp warm, 15), control device (10), at least one temperature sensor (27, 28, 29, 30) device (11 of the amount with for the water of determining condensation in described heat exchanger, 20, 32), it is characterized in that, at least one temperature sensor (27 described, 28, 29, 30) to be arranged in coolant guiding channel (24) and/or in described process air passage (2) and described control device (10) arrange and be used for according to by least one temperature sensor (27 described, 28, 29, 30) time-varying process of the temperature measured and ask for described cylinder (3) with the loading of washings through the time-varying process of the amount of the water of condensation.
2. condenser dryers according to claim 1 (1), it is characterized in that, first temperature sensor (27,29) is arranged in the porch for described cooling medium of described heat exchanger (5,15) in described coolant guiding channel (24).
3. condenser dryers according to claim 2 (1), it is characterized in that, second temperature sensor (28,30) is arranged in the exit for described cooling medium of described heat exchanger (5,15) in described coolant guiding channel (24).
4. condenser dryers according to any one of claim 1 to 3 (1), is characterized in that, described heat exchanger (5,15) is the evaporimeter (15) of heat pump (12,13,14,15).
5. condenser dryers according to any one of claim 1 to 3 (1), is characterized in that, described heat exchanger (5,15) is air-air heat exchanger (5).
6. condenser dryers according to any one of claim 1 to 5 (1), it is characterized in that, described heat exchanger (5,15) below condensation liquid bath (17) in or in condensate tank (19), be furnished with level sensor (11).
7. condenser dryers according to any one of claim 1 to 6 (1), is characterized in that, is furnished with flow sensor (32) in condensate liquid passage (18).
8. one kind for running the method for condenser dryers (1), described condenser dryers has process air passage (2), there is the cylinder (3) of the washings be placed on wherein, for the heat exchanger (5 of the water in the process air of condensation damp warm, 15), control device (10), at least one temperature sensor (27, 28, 29, 30) with for determining at described heat exchanger (5, 15) device (11 of the amount of the water of condensation in, 20, 32), wherein, at least one temperature sensor (27 described, 28, 29, 30) to be arranged in coolant guiding channel (24) and/or in described process air passage (2) and described control device (10) arrange and be used for according to by described temperature sensor (27, 28, 29, 30) time-varying process of the temperature measured and ask for described cylinder (3) with the loading of described washings through the time-varying process of the amount of the water of condensation, it is characterized in that, for the time period Δ t that at least one is predetermined
1ask for by least one temperature sensor (27 described, 28,29,30) time-varying process of the temperature measured and through the amount of the water of condensation time-varying process and by with store in described control device (10), associating between these time-varying processes and the loading of described cylinder (3) ask for described cylinder (3) with the loading of washings.
9. method according to claim 8, it is characterized in that, measure the temperature T of cooling medium described in the porch of described heat exchanger with the first temperature sensor (27,29) in the described coolant guiding channel (24) of described heat exchanger (5,15)
kEwith the temperature T measured with the second temperature sensor (28,30) in the exit of described heat exchanger (5,15)
kA, and consider the temperature difference Δ T of described cooling medium
k=(T
kA-T
kE) time-varying process be used for determining that described cylinder (3) is with the loading of washings, to this, in described control device (10), Δ T is stored for the different value of the amount of the water through condensation
kand the association between described loading.
10. method according to claim 8 or claim 9, it is characterized in that, in order to determine that described cylinder (3) is with the loading of washings, consider additionally to store in described control device (10), by least one temperature sensor (27 described, 28,29,30) time-varying process of the temperature measured, the temperature difference Δ T through the time-varying process of the amount of the water of condensation, described cooling medium
k=(T
kA-T
kE) time-varying process and described cylinder (3) and/or the rotating speed of process air air blast (6) and the heating power of described heater (4) and described cylinder (3) with the association between the loading of washings, wherein, T
kEthe temperature of cooling medium described in the porch of described heat exchanger (5,15), T
kAit is the temperature of cooling medium described in the exit of described heat exchanger (5,15).
Method according to any one of 11. according to Claim 8 to 10, it is characterized in that, ask for time-varying process, the i.e. described condensation rate of the amount of the water through condensation by means of level sensor (11), described level sensor is arranged in the condensation liquid bath (17) of described heat exchanger arranged beneath or is arranged in condensate tank (19).
Method according to any one of 12. according to Claim 8 to 11, is characterized in that, asks for condensation rate by means of flow sensor (32), and described flow sensor is arranged in condensate liquid passage (18).
Method according to any one of 13. according to Claim 8 to 12, it is characterized in that, in order to determine described loading, additionally use humidity sensor (34), the humidity of described washings determined by described humidity sensor in described cylinder (3).
Method according to any one of 14. according to Claim 8 to 13, is characterized in that, the quantity for the circulation of time per unit pump by means of the condensate pump (20) arranged in described condensate liquid passage (18) asks for condensation rate.
Method according to any one of 15. according to Claim 8 to 14, is characterized in that, during the heating period and/or when main baking stage starts, ask for described loading.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012216397.2 | 2012-09-14 | ||
| DE102012216397.2A DE102012216397A1 (en) | 2012-09-14 | 2012-09-14 | Condensation dryer with determination of the load and method for its operation |
| PCT/EP2013/068363 WO2014040904A2 (en) | 2012-09-14 | 2013-09-05 | Condenser dryer with means for determining the loading, and method for operating the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104619906A true CN104619906A (en) | 2015-05-13 |
| CN104619906B CN104619906B (en) | 2016-08-31 |
Family
ID=49111223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380048108.1A Active CN104619906B (en) | 2012-09-14 | 2013-09-05 | Have and load the condenser dryers asking for device and the method run for it |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2895652B1 (en) |
| CN (1) | CN104619906B (en) |
| DE (1) | DE102012216397A1 (en) |
| PL (1) | PL2895652T3 (en) |
| WO (1) | WO2014040904A2 (en) |
Cited By (4)
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| CN106811945A (en) * | 2015-11-27 | 2017-06-09 | 无锡小天鹅股份有限公司 | Dryer and its load capacity determination methods |
| CN110359258A (en) * | 2018-04-11 | 2019-10-22 | 青岛海尔滚筒洗衣机有限公司 | Control method and clothes treatment device for clothes treatment device |
| CN110685112A (en) * | 2019-10-24 | 2020-01-14 | 长虹美菱股份有限公司 | Application of automatic drying method in drum washing and drying machine |
| CN110820286A (en) * | 2018-07-23 | 2020-02-21 | 青岛海尔滚筒洗衣机有限公司 | Anti-overflow method and clothes dryer |
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| EP2927367A1 (en) * | 2014-03-31 | 2015-10-07 | Electrolux Appliances Aktiebolag | Method of conducting a drying cycle in a laundry treating machine, laundry treating machine and electronic controller unit |
| EP3023531B1 (en) | 2014-11-19 | 2018-06-06 | Samsung Electronics Co., Ltd | Clothes dryer |
| DE102015201831A1 (en) * | 2015-02-03 | 2016-08-04 | BSH Hausgeräte GmbH | Method for determining laundry properties and suitable condensation dryer |
| DE102016210265A1 (en) | 2016-06-10 | 2017-12-14 | BSH Hausgeräte GmbH | Method for determining the residual moisture content in a condensation dryer and suitable condensation dryer |
| DE102016225113A1 (en) | 2016-12-15 | 2018-06-21 | BSH Hausgeräte GmbH | Method for operating a laundry treatment appliance with improved control and suitable laundry treatment appliance |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104619906B (en) | 2016-08-31 |
| EP2895652B1 (en) | 2016-08-24 |
| DE102012216397A1 (en) | 2014-03-20 |
| WO2014040904A3 (en) | 2014-05-22 |
| WO2014040904A2 (en) | 2014-03-20 |
| EP2895652A2 (en) | 2015-07-22 |
| PL2895652T3 (en) | 2017-01-31 |
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