EP3784830B1 - Trockner und verfahren zum betrieb eines trockners - Google Patents

Trockner und verfahren zum betrieb eines trockners Download PDF

Info

Publication number
EP3784830B1
EP3784830B1 EP19729172.7A EP19729172A EP3784830B1 EP 3784830 B1 EP3784830 B1 EP 3784830B1 EP 19729172 A EP19729172 A EP 19729172A EP 3784830 B1 EP3784830 B1 EP 3784830B1
Authority
EP
European Patent Office
Prior art keywords
air
proportion
dried
circulating air
receiving member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19729172.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3784830A1 (de
Inventor
Wolf-Peter Graeser
Joachim Krause
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lavatec Laundry Technology GmbH
Original Assignee
Lavatec Laundry Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lavatec Laundry Technology GmbH filed Critical Lavatec Laundry Technology GmbH
Publication of EP3784830A1 publication Critical patent/EP3784830A1/de
Application granted granted Critical
Publication of EP3784830B1 publication Critical patent/EP3784830B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment
    • 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
    • D06F95/00—Laundry systems or arrangements of apparatus or machines; Mobile laundries 
    • 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
    • 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
    • D06F2103/06—Type or material
    • 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
    • D06F2103/12—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
    • D06F2103/24—Spin speed; Drum movements
    • 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
    • D06F2103/34—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
    • D06F2103/28—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
    • 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
    • D06F2105/28—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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/32—Air flow control means
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • 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
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity

Definitions

  • the invention relates to a dryer with a holder for items to be dried, an air duct for guiding circulating air and/or fresh air to the holder, a heating device and at least one sensor for determining relative humidity and/or temperature, the air duct comprising at least one adjustment element, see above that the proportion of circulating air led to the recording can be changed via the setting element.
  • the invention also relates to a method for controlling or regulating a dryer according to the invention.
  • Dryers of the type mentioned are known from practice and exist in different embodiments. This is only an example on the document WO 2016/184462 A1 referred.
  • the residual water is removed from the textiles under the influence of heat.
  • pre-drying takes place in the drum dryer (tumbler) as preparation for ironing flat laundry or for finishing shaped parts.
  • Certain parts e.g. terry goods
  • Pre- and full drying differ in the water content (residual moisture) of the laundry items at the end of the drying process.
  • the final residual moisture content of the textile is between 35% and 50% (pre-drying) or 5% and 0% (full drying).
  • a significant problem in the removal of residual water under the influence of heat with the known dryers is the extremely unfavorable efficiency.
  • the desired residual textile moisture determines the required drying time, the drying energy requirement and the textile damage caused by drying, the service life of the laundry items and thus the economic situation of the mostly small and medium-sized laundry companies.
  • the energy requirements for heating the exhaust air dryers currently used in laundries are up to 1.5 kWh/kg of dried textile.
  • the reason for this high thermal energy requirement, compared to the theoretically required for evaporating the water, is that the porous material to be dried is heated by hot air, which is directed to the textiles by means of a blower and at the same time takes over the removal of the evaporated water.
  • Directly gas-heated dryers have prevailed over steam-heated dryers due to the lower installation costs, the easier control of the thermal energy supply and the lower energy consumption. Electrical heating is only used in small commercial machines or for household appliances
  • the damage caused by drying is, in particular, damage to textiles such as changes in the dimensions of the textile, a reduction in the degree of whiteness and color, and chemical damage to the fiber substrate.
  • This type of damage to textiles occurs in particular as a result of "overdrying" of the items of laundry (removal of the water contained in textiles at normal humidity levels, around 10% in the case of cotton) at elevated temperatures and drying times. Prolonged drying time - even at low temperatures - promotes fiber abrasion due to intensive "drying mechanics".
  • a dryer and a method for operating a dryer according to the prior art are from EP 0 503 586 A1 known.
  • the present invention is therefore based on the object of designing and developing a dryer and a method for operating a dryer in such a way that gentle drying with the lowest possible energy requirement is made possible with structurally simple means.
  • the drying process can be significantly optimized in terms of energy efficiency and gentle treatment of textiles if the proportion of circulating air and/or the heating output can be regulated or controlled during operation.
  • the proportion of circulating air and/or the heating output can be changed by a control or regulation device, taking into account the different drying phases, which means that drying can be carried out overall with an extremely high degree of saturation of the process air and the lowest possible air temperature.
  • the drying process is extremely gentle on the textiles, since overheating of the material to be dried is avoided.
  • the proportion of recirculated air can be routed inside--for example in a hood--and/or outside--for example in pipes.
  • fresh air refers to ambient air that is supplied to the dryer, for example the receiver or the burner.
  • process air refers to the air contained in the receptacle during the drying process.
  • exhaust air means the air removed from the receptacle. If the exhaust air is returned to the intake and thus forms part of the process air, it is referred to as "circulating air”.
  • the "goods to be dried” can be textiles or goods made of other materials, for example rubber mats or mats made of polyamide pile.
  • the “receptacle” can be designed in particular as a drum.
  • the recording of the entire device can be formed, for example, by the respective drums of the modules, ie also be modular.
  • the setting element can advantageously be a ventilation flap and/or a circulating air fan.
  • the ventilation flap can be arranged in an air duct in such a way that in the open position of the ventilation flap, exhaust air is fed back to the intake and thus serves as circulating air.
  • the ventilation flap and, if necessary, the air duct are designed in such a way that a proportion of circulating air of 100% can be realized in a completely open ventilation flap position and a proportion of circulating air of 0% can be realized in a closed ventilation flap position.
  • a circulating air fan can be arranged in the air duct in order to convey exhaust air to the receptacle as circulating air.
  • the ventilation flap position and/or the circulating air fan output can be adjusted at least essentially continuously. This design measure enables a particularly energy-efficient control or regulation of the drying process.
  • the ventilation flap it is possible for the ventilation flap to be operable by means of a servomotor or a cylinder-piston device (e.g. pneumatic cylinder).
  • the senor is used to determine the relative humidity of the exhaust air discharged from the inlet.
  • This sensor can have a filter element to protect the sensor from fluff.
  • a fabric filter or sintered steel element, in particular with a pore size of 5 ⁇ m, can be used as the filter element.
  • the term "relative exhaust air humidity” is to be understood in the broadest sense, since the measurement of the relative air humidity can also take place inside the recording and thus affect the process air.
  • a sensor for determining the surface temperature of the material to be dried can be arranged.
  • this can be an infrared sensor or any other temperature sensor.
  • a combined temperature and humidity sensor is provided.
  • a sensor for determining the inlet air temperature and/or the outlet air temperature is arranged.
  • the inlet air is the air that is introduced into the receptacle, while the outlet air is the air that is exhausted from the receptacle. Any combination of the above sensors can thus be arranged.
  • the number and mode of operation of the sensors in the individual modules can differ from one another, so that the sensors are provided in accordance with the defined task of the modules.
  • the inlet air temperature and/or the outlet air temperature can be taken into account when controlling or regulating the proportion of circulating air and/or the heat output.
  • the adjustment element in particular the ventilation flap position and/or the circulating air fan, can be controlled with the relative exhaust air humidity and/or with the surface temperature of the material to be dried as a measured variable and the circulating air proportion as a manipulated variable.
  • the proportion of circulating air can be adapted to the relevant, variable parameters during operation, which results in a significant improvement in efficiency and avoids damage to the material to be dried.
  • the heating device can be controlled using the relative exhaust air humidity and/or the surface temperature of the material to be dried as the measured variable and the heating power as the manipulated variable. In this way, the heat output of the burner can be adjusted to the essential parameters that change during the drying process.
  • the receptacle can have several modules arranged one after the other and/or next to one another, which are suitably designed for heating, drying or cooling the material to be dried; in particular, each module can have its own heating device.
  • the receptacle can have two or more modules arranged one after the other and/or next to one another.
  • This offers the possibility of carrying out individual process steps in a particularly efficient manner, with the proportion of circulating air and/or the heat output of the heating device of each module can be controllable during the drying process.
  • a structure with a module for heating, one or more modules for drying, a module for checking the moisture content of the material to be dried and a module for cooling the material to be dried is particularly efficient.
  • the dryer can have at least one transport device assigned to a module for transporting the material to be dried onward from this module to another module. Such a transport device enables safe transport or safe transfer of the material to be dried in the drying process effected by the modules.
  • the air duct can be designed in such a way that the circulating air supplied to a module is exhaust air from this module and/or exhaust air from at least one other module.
  • it can be the exhaust air from a module arranged in front of it, viewed in the direction of transport of the material to be dried, preferably the module arranged directly in front of it or a plurality of modules arranged in front of it.
  • the heat contained in the exhaust air can be used in one or more other modules.
  • the exhaust air can also be used as combustion air for the heating device if the heating device is operated by means of a combustion process.
  • the air can also be heated by means of steam or electrical energy—without a combustion process. In this case, exhaust air from a module is not required for the heating device.
  • heat from the exhaust air from a module or multiple modules can be at least partially transferred to supply air and/or circulating air, in particular one that is arranged in front of it, preferably the one that is arranged directly in front of it. Module or several, in particular modules arranged in front of it, can be transferred. Such a transfer process can be carried out by means of one or more heat exchangers, preferably air/air heat exchangers, take place.
  • This type of use of waste heat from an exhaust air differs from a direct transmission of the heat due to the means of transmission used - the heat exchanger - as is the case, for example, in a case where exhaust air from one module at least partially forms supply air from another or several other modules.
  • a heat exchanger can be integrated into a module, for example, or can be assigned directly to a module, for example to enable air recirculation of the module.
  • a heat exchanger or several heat exchangers can be provided, which are arranged in an air duct or integrated into an air duct in order, if necessary, to preheat, for example, supply air for a module using exhaust air from a module.
  • a module for checking the moisture content of the material to be dried can be arranged in front of a module for cooling the material to be dried.
  • a control module can form the end of an arrangement of modules for heating and for drying, in order to control the moisture content before the material to be dried is cooled and, if necessary, to carry out additional post-drying in the control module.
  • air supply to a module for controlling the moisture content of the material to be dried can be at least partially air that is heated by means of a heat exchanger, preferably an air/air heat exchanger, which uses thermal energy from the exhaust air of a module to heat up the Material to be dried and/or from the exhaust air of another module or the module for controlling the moisture content of the material to be dried itself.
  • a heat exchanger preferably an air/air heat exchanger
  • energy can be used efficiently by supplying preheated supply air.
  • the supply air to this control module is formed exclusively by air that has been preheated in the manner described.
  • One or more modules for cooling the items to be dried usually arranged at the end of the arrangement of different modules supply air or fresh air can be supplied from the installation room in which this module or the modules are located, or from outside the building.
  • the air duct which can be formed, for example, at least partially in the form of corresponding tubes, has additional blowers or fans. This makes it possible to support the air flow, so that a reliable functioning of the dryer is ensured, particularly when the air is ducted over larger distances.
  • a transport device can be arranged between two modules in each case.
  • the transport device can preferably have a conveyor belt or a chute or a chute.
  • a suitable height offset between the modules makes sense so that the drying goods can be moved from one module to the next module by gravity.
  • a compressed air support can be provided, which ensures a safe further transport of the material to be dried.
  • the transport device can be designed as an internal mechanism of a module or can be integrated into a module. Such a transport device or mechanism can move the goods to be transported between modules by means of suitable gripping and/or guiding elements. When selecting a suitable transport device, the required quantity of drying material to be transported can be taken into account.
  • a drying material feed device can be arranged in front of the receptacle, which preferably has a weighing device for the drying material. This ensures that the dryer and specifically the recording is loaded with a suitable amount of drying material. This prevents the dryer from being overloaded.
  • the control or regulation device to record the material to be dried (type of material to be dried), the heating temperature, the residual drying moisture, the initial drying moisture, the load quantity, the filling ratio, the process air condition variables, the blower output (of a circulating air blower and /or a heater fan), the drum movement and/or the burner temperature is taken into account.
  • the user can specify that the items to be dried are rubber mats or mats made of polyamide pile with a specific load.
  • Corresponding parameters can be entered, for example, via an input device and taken into account by the open-loop or closed-loop control device.
  • the user can select a specific program for an item to be dried in order to carry out the drying process.
  • the setting element or the setting elements can be regulated as a function of the pressure prevailing in the air duct.
  • One or more air pressure sensors can be arranged for this purpose.
  • a method for operating a dryer in particular according to one of Claims 1 to 11, with a holder for drying material, an air duct for guiding circulating air and/or fresh air to the holder, a heating device and at least one sensor for determining relative humidity and /or temperature, the air ducting comprising at least one adjusting element, so that the proportion of circulating air led to the receptacle is changed via the adjusting element, characterized in that a proportion of circulating air directed to the receptacle and/or the heat output of the heating device during the drying process via a control or control device is controlled or regulated.
  • a high proportion of circulating air and a small proportion of fresh air are directed to the receptacle during a heating phase, with the proportion of circulating air being reduced during a drying phase as a function of the measured relative exhaust air humidity, with a small proportion of circulating air and a high proportion of fresh air being directed to the receptacle during a cooling phase.
  • the duration of the drying phase and/or the reduction in the proportion of circulating air during the drying phase is adjusted taking into account at least one external parameter.
  • the duration of the drying phase and/or the reduction in the proportion of circulating air is adjusted during the drying phase, taking into account at least one external parameter.
  • the type of material to be dried, the heating temperature, the residual moisture of the material to be dried, the initial moisture of the material to be dried, the load, the filling ratio, process air condition variables, the fan output (of a circulating air fan and/or a heating fan), the drum movement and/or the burner temperature can serve as external parameters.
  • the first phase 1 shows the typical temperature profile over time in the material to be dried for the duration of the drying process, with the fabric temperature being plotted as a function of the drying time.
  • the three phases 1, 2, 3 of the drying process can be seen.
  • the temperature rises rapidly to the value of the evaporation temperature (cooling limit temperature) in order to keep this constant during the second phase 2 as long as the moisture is evaporated from the surface of the textile.
  • the third phase 3 the remaining moisture is evaporated from the capillaries of the textiles, which leads to a sharp rise in temperature up to the level of hot air.
  • This Phase indicates that the drying process is complete, the heat supply has stopped and the cool-down can be initiated.
  • the dryer is designed as a single dryer and has a receptacle 4 for the material to be dried, which is not shown.
  • the recording 4 can be designed as a drum.
  • the receptacle 4 can be supplied with fresh air 5 from outside the device, which is guided transversely through the receptacle 4 and there, as process air 6, removes moisture from the material to be dried.
  • the exhaust air 7 discharged from the receptacle passes through a fluff filter 8 .
  • a circulating air fan 9 and a moisture sensor 10 are arranged after the fluff filter 8 , viewed in the flow direction of the exhaust air 7 . This arrangement prevents the moisture sensor 10 from becoming full of fluff. However, it is also possible to arrange the moisture sensor 10 in front of the fluff filter 8 as viewed in the direction of flow.
  • a ventilation flap 11 is shown. If the ventilation flap 11 is closed, the exhaust air 7 is led out of the dryer. When the ventilation flap 11 is fully or partially opened, the exhaust air 7 can be supplied entirely or partially to the receptacle 4 as circulating air 12 .
  • the position of the ventilation flap 11 and / or the power of the circulating air fan 9 can be adjusted depending on the humidity of the exhaust air 7 measured with the humidity sensor 10 during operation.
  • a temperature sensor 13 is arranged in the receptacle 4, which is used to determine the surface temperature of the drying material.
  • a sensor for determining the inlet air temperature and/or a sensor for determining the outlet air temperature can also be provided.
  • the receptacle 4 is formed by a plurality of modules 14, 14', 14" arranged one after the other, for example for heating, drying or cooling the material to be dried.
  • the individual modules 14, 14', 14" can be configured in accordance with the 2 illustrated embodiment may be formed, so that reference is made to the relevant statements.
  • the receptacle 4 of the entire device can be formed by the individual receptacles or drums of the modules 14, 14', 14''.
  • each module has a circulating air duct 16, via which circulating air can be supplied to the receptacle 4, i.e. to each module 14, 14', 14", by regulating or controlling the setting elements (not shown).
  • the exhaust air of the respective module 14 , 14', 14" can be discharged via an exhaust air duct 21.
  • a heat exchanger 17 is arranged, via which the heat from the exhaust air can be transferred to the incoming air.
  • the first module 14 has a heating air supply 18 via which the heating device 19 can be supplied with fresh air which can be preheated via the heat exchanger 17 . It is conceivable that all modules 14, 14', 14'' have a corresponding heating air supply 18.
  • a drying material feed In front of the first module 14 there is a drying material feed, via which the module 14 is loaded with the drying material. Between the modules 14 and module 14′ and between module 14′ and module 14′′ there is a transport device 20 for further transport of the material to be dried.
  • the material to be dried can be heated, for example, in the first module 14 , ie the heating-up phase takes place in this module 14 .
  • the actual drying of the material to be dried can take place in the second module 14', ie the drying phase takes place in this module 14'.
  • the material to be dried can be cooled, ie the cooling phase takes place.
  • the proportion of circulating air supplied to individual modules 14, 14' and 14" can take place during the drying process as a function of the measured humidity and/or surface temperature of the material to be dried.
  • the heat output of the heating devices of modules 14, 14' and 14" can be adjusted as a function of these measured values become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP19729172.7A 2018-04-27 2019-04-25 Trockner und verfahren zum betrieb eines trockners Active EP3784830B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018206629.9A DE102018206629A1 (de) 2018-04-27 2018-04-27 Trockner und Verfahren zum Betrieb eines Trockners
PCT/DE2019/200033 WO2019206383A1 (de) 2018-04-27 2019-04-25 Trockner und verfahren zum betrieb eines trockners

Publications (2)

Publication Number Publication Date
EP3784830A1 EP3784830A1 (de) 2021-03-03
EP3784830B1 true EP3784830B1 (de) 2023-04-05

Family

ID=66793728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19729172.7A Active EP3784830B1 (de) 2018-04-27 2019-04-25 Trockner und verfahren zum betrieb eines trockners

Country Status (7)

Country Link
US (1) US11976409B2 (es)
EP (1) EP3784830B1 (es)
DE (1) DE102018206629A1 (es)
DK (1) DK3784830T3 (es)
ES (1) ES2949791T3 (es)
FI (1) FI3784830T3 (es)
WO (1) WO2019206383A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018206629A1 (de) * 2018-04-27 2019-10-31 Lavatec Laundry Technology Gmbh Trockner und Verfahren zum Betrieb eines Trockners
US12000081B2 (en) * 2021-03-18 2024-06-04 Haier Us Appliance Solutions, Inc. Travel cycle for a condenser or heat pump dryer appliance
CN115854694B (zh) * 2022-11-30 2023-06-06 乳山市东方硅胶有限公司 一种硅胶干燥剂生产加工干燥设备及干燥方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2399555A (en) * 1943-04-24 1946-04-30 Us Hoffman Machinery Corp Balanced suction tumbler
US3768173A (en) * 1972-07-17 1973-10-30 Oxy Metal Finishing Corp Apparatus for drying workpieces in bulk
IT1250380B (it) 1991-03-12 1995-04-07 Zanussi Elettrodomestici Macchina asciugabiancheria di tipo perfezionato
US5713138A (en) * 1996-08-23 1998-02-03 Research, Incorporated Coating dryer system
US6088932A (en) * 1997-12-30 2000-07-18 Amana Company, L.P. Efficiency clothes dryer
DE102006029960A1 (de) * 2006-06-29 2008-01-03 BSH Bosch und Siemens Hausgeräte GmbH Trockner mit verringerter Geräuschentwicklung, hierfür geeignetes Gebläse und Läuferrad sowie Verfahren zur Herstellung des Läuferrades
AT504578B1 (de) * 2006-11-21 2009-11-15 Muehlboeck Kurt Verfahren zum trocknen von in stapeln zusammengefasstem holz
WO2009026591A1 (en) * 2007-08-23 2009-02-26 Meb Ip, Llc Heat delivery system for a fabric care appliance
KR100925738B1 (ko) * 2007-09-04 2009-11-11 엘지전자 주식회사 건조기의 온습도 조절 장치
KR20110132151A (ko) * 2010-06-01 2011-12-07 삼성전자주식회사 건조기 및 건조도 측정 방법
KR101337699B1 (ko) * 2010-08-11 2013-12-06 위니아만도 주식회사 의류건조기 및 의류건조기 제어방법
AU2013394134A1 (en) * 2013-07-09 2016-01-21 Electrolux Appliances Aktiebolag Appliance for drying laundry with enhanced operation flexibility
KR20150081602A (ko) * 2014-01-06 2015-07-15 삼성전자주식회사 세탁 건조기 및 그 제어방법
KR101613965B1 (ko) 2014-12-08 2016-04-20 엘지전자 주식회사 배기식 의류 건조기의 제어방법
DE102015209370B3 (de) * 2015-05-21 2016-09-08 Lavatec Laundry Technology Gmbh Trockner
DE102016101725A1 (de) * 2016-02-01 2017-08-03 Stela Laxhuber Gmbh Durchlauftrockner mit mindestens zwei Sektionen
US10494756B2 (en) * 2017-11-16 2019-12-03 Haier Us Appliance Solutions, Inc. Dryer appliances including an air circulation duct
DE102018206629A1 (de) * 2018-04-27 2019-10-31 Lavatec Laundry Technology Gmbh Trockner und Verfahren zum Betrieb eines Trockners

Also Published As

Publication number Publication date
FI3784830T3 (fi) 2023-07-11
US11976409B2 (en) 2024-05-07
DE102018206629A1 (de) 2019-10-31
US20210230792A1 (en) 2021-07-29
EP3784830A1 (de) 2021-03-03
ES2949791T3 (es) 2023-10-03
WO2019206383A1 (de) 2019-10-31
DK3784830T3 (da) 2023-07-10

Similar Documents

Publication Publication Date Title
EP3784830B1 (de) Trockner und verfahren zum betrieb eines trockners
DE112008000412B4 (de) Traktfreier Trockner
EP0467188B1 (de) Wäschetrockner mit einem Wärmepumpenkreis
EP3249326B1 (de) Trocknereinrichtung für eine textile warenbahn mit einer verbesserten einrichtung zur wärmeeinbringung
EP3608469B1 (de) Wäschetrockner und verfahren zum trocknen von wäsche mit einem wäschetrockner
EP2639349B1 (de) Verfahren zum Trocknen von Wäsche und Trockner
DE202015106435U1 (de) Wäschetrockner vom Ablufttyp
EP2516949A1 (de) Verfahren und vorrichtung zum trocknen von gipsplatten
WO2014114744A2 (de) Verfahren und vorrichtung zum trocknen und/oder rösten eines lebensmittels
EP3298190B1 (de) Moudularer lufttrockner
DE102016101725A1 (de) Durchlauftrockner mit mindestens zwei Sektionen
WO2012119850A1 (de) Textilbehandlungsmaschine und verfahren zum trocknen textiler strukturen
EP0377193B1 (de) Wäschetrockner
EP2181298B1 (de) Verfahren, trocknungsofen zum trocknen einer warenbahn mit heisser luft sowie verwendung der vorrichtung
EP3650599A1 (de) Verfahren zum mangeln von wäschestücken
DE102022130372A1 (de) Vorrichtung und Verfahren zur Trocknung von Wäsche
EP2730694B1 (de) Verfahren zum Ermitteln zumindest einer Kenngröße von Wäschestücken, sowie entsprechende Wäschepflegemaschine
EP4372141A1 (de) Energiespeichereinrichtung für eine vorrichtung und ein verfahren zum trocknen von wäsche
DE102014216853B4 (de) Verfahren zum beladungsabhängigen Betrieb eines Trockners sowie hierfür geeigneter Trockner
DE1290662B (de) Einrichtung zur Herstellung von Blaehton
DE102022131759A1 (de) Verfahren zum Glätten von textilen Gegenständen in einem Tunnelfinisher
DE102020127946A1 (de) Effiziente Strichtrocknung
DE102020101597A1 (de) Wäschetrockner
DE102020101588A1 (de) Wäschetrockner
DE2004390C3 (de) Vorrichtung zum Fixieren von auf ein Textilgut aufgebrachten Behandlungsmitteln

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20201029

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502019007406

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: D06F0058120000

Ipc: D06F0058020000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: D06F 58/26 20060101ALI20221006BHEP

Ipc: D06F 58/12 20060101ALI20221006BHEP

Ipc: D06F 58/02 20060101AFI20221006BHEP

INTG Intention to grant announced

Effective date: 20221107

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019007406

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1558331

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20230708

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2949791

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20231003

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230807

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230705

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20230821

Year of fee payment: 5

Ref country code: GB

Payment date: 20230817

Year of fee payment: 5

Ref country code: FI

Payment date: 20230817

Year of fee payment: 5

Ref country code: ES

Payment date: 20230821

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230805

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230706

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230818

Year of fee payment: 5

Ref country code: DK

Payment date: 20230817

Year of fee payment: 5

Ref country code: DE

Payment date: 20230803

Year of fee payment: 5

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230425

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019007406

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230430

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230430

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230430

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

26N No opposition filed

Effective date: 20240108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240422

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230405