EP3453796A1 - Modular air dryer - Google Patents

Abstract

Dryer for drying of drying material, with a receptacle for the drying material, an air guide for guiding air to the receptacle and a heater for heating the air, wherein the receptacle a plurality of successively arranged modules (1, 2, 3, 4) for heating, drying or cooling of the material to be dried, wherein at least one module (1, 2, 3, 4) a transport device (5) for further transport of the material to be dried from this module (1, 2, 3) or a module (1, 2, 3) to the next Module (2, 3, 4) is assigned and wherein before receiving a Trocknungsgut feed device (6) is arranged.

Description

The present invention relates to a dryer for drying of drying material, with a receptacle for the material to be dried, an air guide for guiding air to the receptacle and a heater for heating the air.

Dryers of the type mentioned are known in practice and exist in different embodiments. For example, such a dryer from the DE 10 2011 087 874 A1 known. In the known dryer, a receptacle for the material to be dried is realized, to which heated air is supplied via an air duct. For heating the air, a heating device is provided.

Dryers of this type are used, for example, in industrial drying processes, for example in laundries. A common exhaust air from the dryer can reach temperatures of up to 120 ° C and more. For the operation of the dryer, therefore, a large amount of energy must be used, which is released to a large extent in the form of thermal energy back to the environment. Accordingly, it is known to use heat exchangers, with which heat from the exhaust air is used to heat the supply air. As a result, a considerable amount of energy can be saved or reused.

However, due to constantly rising energy costs and from an ecological point of view, it is still desirable to achieve further energy optimization and savings in the operation of a dryer.

The present invention is therefore based on the object, a dryer of the type mentioned in such a way and further, that a particularly efficient use of required for drying energy is made possible in a simple manner.

According to the invention the above object is achieved by a dryer with the features of claim 1. Thereafter, the dryer is designed and further developed such that the receptacle has a plurality of successively arranged modules for heating, drying or cooling of the material to be dried and that at least one module is associated with a transport device for further transport of the material to be dried from this module or module to the next module.

In accordance with the invention, it has been recognized that a clever design of the receptacle for the material to be dried solves the above problem in a surprisingly simple manner. For this purpose, the receptacle in a further inventive manner a plurality of successively arranged modules, which are designed in a suitable manner for heating, drying or cooling of the material to be dried. In this case, the recording may have two or more successively arranged modules. This offers the possibility to carry out individual process steps in a particularly efficient manner, wherein the supplied heat and / or air and a moisture content of the material to be dried can be controlled or regulated individually for each individual module, on the one hand the desired drying effect and on the other hand the most efficient and economical use to achieve energy. For example, a structure with a module for heating, one or more modules for drying, a module for controlling the moisture content of the item to be dried and a module for cooling the item to be dried are particularly efficient. Furthermore, the dryer according to the invention has at least one transport device assigned to a module for the further transport of the material to be dried from this module or a module to the next module. With such a transport device, a secure transport or a secure transfer of the material to be dried is made possible in the drying process effected by the modules.

Consequently, with the dryer according to the invention, a dryer is specified in which a particularly efficient use of energy required for drying is made possible in a simple manner.

The individual modules can basically be operated in different ways. For example, a module can work as completely as possible in recirculation mode. In this case, required heat can be transferred via heat exchanger for Trocknungsgut and heat losses can be suppressed via an exhaust air. Other modules are designed in such a way that a supply air is fed into a receiving region for material to be dried in the module and exhaust air is discharged from the receiving region. Such exhaust air of a module usually contains a heat content that can be used elsewhere in the drying process. In an advantageous embodiment, therefore, an exhaust air of a module or a plurality of modules at least partially a supply air arranged in front of it, preferably arranged directly in front of form module or several modules arranged in front. Due to the at least partial use of an exhaust air as supply air of a module arranged in front or several modules arranged in front of it, the heat contained in the exhaust air can be used in a module arranged in front or in front of it. In this case, there is a direct supply of the exhaust air of a module in a receiving area for Trocknungsgut another module or several other modules. As an alternative or in addition to such use of the exhaust air as supply air, the exhaust air can also be used as combustion air of the heating device, provided that the heating device is operated by means of a combustion process. In addition to such a mode of operation of the heating device, it is also possible to heat the air by means of steam or electrical energy-without a combustion process. In this case, an exhaust air of a module for the heater is not needed.

Alternatively or in addition to a use of the exhaust air of a module or a plurality of modules as described above, heat from exhaust air of one module or several modules can be arranged at least partially on a supply air and / or circulating air in front of it, preferably the module or module arranged directly in front of it several previously arranged modules be transferable. Such a transfer process can be carried out by means of one or more heat exchangers, preferably air / air heat exchangers. This type of use of waste heat from an exhaust air differs due to a transmission means used - the heat exchanger - from a direct transmission the heat, as for example, in a case when exhaust air of a module at least partially forms a supply air of another or more other modules. A heat exchanger may for example be integrated in a module or be directly associated with a module, for example, to allow recirculation mode of the module. Alternatively or additionally, a heat exchanger or a plurality of heat exchangers may be provided, which are arranged in an air duct or integrated into an air duct, for example, if necessary, to preheat a supply air for a module by means of an exhaust air of a module.

In order to ensure a particularly high-quality drying result and to ensure an efficient use of the required energy, a module for controlling the moisture content of the material to be dried can be arranged in front of a module for cooling the material to be dried. Such a control module may form the end of an assembly of modules for heating and drying to control the moisture content before cooling the drying material and possibly additionally make a final drying in the control module.

With regard to a particularly efficient use of required energy, a supply air of a module for controlling the moisture content of the drying material may be at least partially air, which is heated by a heat exchanger, preferably an air / air heat exchanger, the thermal energy from the exhaust air of a module for heating the Drying material and / or from the exhaust air of another module or module for controlling the moisture content of the drying material itself refers. In this case, efficient use of energy can take place by supplying preheated supply air. In a particularly advantageous manner, the supply air to this control module is formed exclusively by preheated to the type described air.

A module for cooling the drying material, which is usually arranged as a conclusion of the arrangement of different modules, can advantageously remove a supply air from an installation space in which this module or the modules is located, or from an ambient air. Such ambient air For example, it could be accessible from outside a building to the cooling module. The cooling effect is caused by the usually compared to the air in the modules air cooler air in the installation room or cooler ambient air.

With regard to the effective use of the heat energy present in an exhaust air, an exhaust duct can have one or more dividing and / or switching elements, preferably dividing and / or switching flaps. By such division and / or switching elements a targeted and flexible management of the exhaust air to modules is possible in which the supply of heat is required and / or energetically favorable. Such division and / or switching elements can be centrally controlled by means of a suitable control. In that regard, the individual circuit of the split and / or switching elements, taking into account the operation of the entire dryer and the overall arrangement of modules can be performed individually and time-dependent.

In the presence of a heating device which is operated by means of a combustion process, a combustion air duct may have a pressure compensation flap with which the air pressure or the air pressure conditions in the combustion air duct can be influenced and controlled. For example, in the presence of for a desired combustion process to large amounts of exhaust air from, for example, a cooling module can escape through the pressure equalization flap excess present or supplied exhaust air. This excess exhaust air can be performed, for example, in a supply air duct of a heat exchanger for preheating supply air for one of the modules. If no exhaust air from a module is available, air can be drawn in via the pressure equalizing flap for the heating device or heating burner.

In a particularly advantageous embodiment, a transport device can be arranged between each two modules. In this case, the transport device may preferably have a conveyor belt or a chute or a slide chute. In the case of a chute or slide chute, a suitable height offset between the modules is useful, so that the material to be dried passes from one module to the next module due to gravity. Possibly. can be a compressed air support be provided, which ensures a safe onward transport of the material to be dried. As an alternative to the aforementioned embodiments, the transport device may be formed as an internal mechanism of a module or integrated into a module. Such a transport device or mechanism can move the cargo between modules by means of suitable gripping and / or guide elements. When selecting a suitable transport device, the required amount of material to be transported can be taken into account.

With regard to a reliable feeding of the material to be dried to the receptacle, a drying material supply device can be arranged before the receptacle, which preferably has a weighing device for the material to be dried. This ensures that the dryer and in concrete the recording is loaded with a suitable amount of material to be dried. An overload of the dryer can be excluded thereby.

Depending on the task - heating, drying, checking or cooling - a module can be designed in an individual way. Advantageous components of the modules may be an infrared temperature measuring device and / or a device for detecting another measured variable for determining the moisture content of the material to be dried. A receiving area of a module may be formed by a motor driven drum which is suitably rotatably mounted. Furthermore, a module may include a fan which directs air through the Trocknungsgut. The heating device for heating the air may have a heater associated with a module. In this case, each module can be assigned such a heater. In a particularly advantageous manner, at least one module and preferably several or all modules can be designed as a clock dryer. Such cycle dryers are known in the art and constitute a reliable drying unit which can be used as a single module in the context of the present invention.

With regard to a particularly energetically efficient operation of the dryer, the dryer may have a control or regulating device. Such a control or regulating device can be the guiding element as a central element and / or amount of the supply and / or exhaust air to or from the modules and / or the heating of supply air to the modules and / or air in one or more modules depending on a predetermined moisture content of the drying material control or regulate. Such a control or regulation may include the circuit, opening and closing of dividing and / or switching elements and / or a pressure equalization flap.

In the dryer according to the invention a quasi cascaded dryer is provided by the arrangement of several modules. It can be done in a first module, a heating of drying air to about 180 ° C. At the outlet of the dryer, for example, a temperature of 120 ° C may be present.

The supply of air can be done according to different operating programs depending on the humidity and / or type of the item to be dried.

The residence of the material to be dried in the respective modules can be for example about 4 minutes, so that a clocking of about 4 minutes is present. The drying time can then be about 12 minutes for three modules. Subsequently, an additional cooling time of suitable duration may be provided, for example 2 minutes. However, these times are to be understood as purely exemplary and can be lengthened or shortened individually or in total according to individual situations.

Fig. 1

In einer schematischen Darstellung ein Ausführungsbeispiel eines erfindungsgemäßen Trockners,

Fig. 2

in einer schematischen und detaillierteren Darstellung das Ausführungsbeispiel aus Fig. 1 mit einer mehrere Heizbrenner aufweisenden Heizeinrichtung und

Fig. 3

in einer schematischen und detaillierteren Darstellung das Ausführungsbeispiel aus Fig. 1 in einer Variante mit einer elektrisch oder mit Dampf beheizte Heizgeräte aufweisenden Heizeinrichtung.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to refer to the subordinate claims and on the other hand to the following explanation of preferred embodiments of the invention with reference to the drawings. In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawings, also generally preferred embodiments and developments of the teaching are explained. In the drawing show

Fig. 1

In a schematic representation of an embodiment of a dryer according to the invention,

Fig. 2

in a schematic and more detailed representation of the embodiment Fig. 1 with a heater having a plurality of heating burner and

Fig. 3

in a schematic and more detailed representation of the embodiment Fig. 1 in a variant with a heater electrically or steam heated heaters.

Fig. 1 shows a schematic representation of a structure of an embodiment of a dryer according to the invention for drying of drying material. The dryer has a receptacle for the material to be dried, an air duct, not shown here, for guiding air to the receptacle and a heating device, not shown here, for heating the air. With regard to a particularly efficient use of energy required for drying, the receptacle has a plurality of successively arranged modules 1, 2, 3 and 4 for heating, drying, controlling the moisture content and cooling of the material to be dried. Between the modules 1 and 2, 2 and 3 and 3 and 4 respectively a transport device 5 for further transport of the material to be dried between these modules 1, 2, 3 and 4 is arranged.

In front of the module 1, a drying material supply device 6 is arranged, via which the module 1 is loaded with the material to be dried. An input of the material to be dried in the dryer thus takes place via the Trocknungsgut-feeding device 6. After the module 4 is an output of the drying material. Fig. 1 1 illustrates the drying material flow in this cascaded dryer constructed from a plurality of modules 1 to 4 according to the first embodiment.

The Fig. 2 and 3 are schematic and more detailed representations of the principle in Fig. 1 shown embodiment, wherein Fig. 2 a heater having a plurality of combustion process based heaters 7 and Fig. 3 a heater having a plurality of steam heated or electric heaters. Because of this difference in the training of Heating arise differences of the embodiments in the supply and / or exhaust air to or from the modules 1 to 4.

In the Fig. 2 and 3 is the in Fig. 1 shown Trocknungsgut-feeding device 6 omitted for clarity. The following description basically refers to both of FIGS Fig. 2 and 3 shown embodiments, wherein constructive differences are explained due to the differently designed heaters.

The module 1 for heating is essentially formed by a known clock dryer with infrared temperature measurement or the detection of another parameter for determining the moisture content of the material to be dried. The material to be dried is located in a rotating drum and driven by a motor drum in the module 1. This drum forms a receiving area for the material to be dried. The module 1 has a fan which directs air in the receiving area through the Trocknungsgut. For heating the air, the module 1 has a heating device. This heater is in the in Fig. 2 shown embodiment formed by a burner 7 based on a combustion process, which causes a heat supply to the module 1. Furthermore, the module 1 has an air / air heat exchanger 8 coupled into a circulating air volume flow, which is integrated into the module 1. The burner 7 is also integrated in the module 1. In the same way, the module 2 for drying and the module 3 for controlling the moisture content of the item to be dried have integrated burners 7.

At the in Fig. 3 In the embodiment shown, the heating device has a plurality of steam-heated or electric air heaters 9. In that regard, in the in Fig. 3 embodiment shown a heater with air heaters 9 instead of 7 realized with burners. The air heaters 9 are also integrated in the modules 1, 2 and 3.

At the in Fig. 2 shown embodiment, an exhaust system is provided for discharging combustion air of the burner 7, wherein the module 7 of the burner 7, the heat exchanger 8 and the exhaust system are designed such that in module 1 it is possible to operate the drying process with a recirculation rate of 100%. Also at the in Fig. 3 shown embodiment, such recirculation mode with a recirculation rate of 100% in the module 1 is possible.

The drying module 2 likewise essentially corresponds to a cycle dryer with infrared temperature measurement or the detection of another measured variable for determining the moisture content of the material to be dried. The drying material is dried in one or more of these modules - it is possible to integrate more than one module 2 for drying in the dryer - with the supply of energy and a variable supply air. The supply air of the module 2 is the exhaust air of the respective subsequent module, in the present case of the module 3 for controlling the moisture content of the material to be dried.

The module 3 for checking the moisture content of the material to be dried likewise essentially corresponds to a cycle dryer with infrared temperature measurement or the detection of another measured variable for determining the moisture content of the material to be dried. The already dried material to be dried is post-dried in this module 3 if, due to various parameters such as textile temperature, heating or cooling rate and / or direct exhaust moisture measurement, the inference is given that the residual moisture in the material to be dried is too high. The supply air of the module 3 is preheated supply air from a heat exchanger 10. This heat exchanger 10 relates thermal energy from the exhaust air of the modules 1, 2 and possibly 3. Furthermore, the heat exchanger 10 heat from the exhaust air of the module 4 relate, since the exhaust air from this module 4 in a fresh air supply can be coupled or coupled.

The module 4 for cooling is also essentially a clock dryer, but in contrast to the other modules 1, 2 and 3 has no heater and recirculation flaps. The supplied supply air of the module 4 is the installation room or the outside air - taken from outside a building shell. The exhaust air of the module 4 is used according to Fig. 2 the burners 7 of the other modules 1, 2 and 3 as combustion air. If no or only little combustion air is required, the exhaust air escapes from the module 4 or from the cooling process via a pressure compensation flap 11 into the supply air duct in front of the heat exchanger 10 no exhaust air from this module 4 available, 11 air is sucked for the burner 7 via the pressure equalizing flap. A fan of the module 4 is reduced in performance over those in the other modules 1, 2 and 3.

The exhaust air of the module 3 is passed to a dividing / switching flap 12, which supplies the exhaust air either directly to the module 2 or the heat exchanger 8 of the module 1. It is also possible to lead the exhaust air by means of the dividing / switching flap 12 partially to the module 2 and partly to the heat exchanger 8. The control of Aufteil- / Umschaltklappe 12 takes place in a constantly controlled manner, whereby a suitable opening or closing of the split / switchover flap 12 and dividing the exhaust air of the module 3 is effected in order to avoid over-drying or heat damage of the drying material.

This in Fig. 2 embodiment shown further comprises in the leading out of the module 4 exhaust duct to a thermally active material as an optional regenerator 13. In both embodiments of the Fig. 2 and 3 is still arranged in the leading out of the module 4 exhaust duct, an air filter 14 and / or lint filter.

In the dryer according to the invention, the material to be dried and a drying air stream pass through the process steps essentially in countercurrent. A transhipment of the goods to be transported from one module 1, 2 or 3 to another module 2, 3 or 4 takes place after expiry of settable time units or cycles. The loading of the modules 1, 2, 3 and 4 takes place on the front side, the discharge on the back.

In Module 1, the material to be dried is heated to maintain high humidity and high heat transfer rates in the circulating air process. For this purpose, the module 1 has an integrated air / air heat exchanger 8, which is acted upon on the one hand with exhaust air from the following modules 2 and 3 with heat. The supplied heat is released on the other side to the circulating air of the module 1.

If the transferred heat is insufficient to reach the desired drying temperature, additional energy is supplied through a burner 7 or air heater 9. When a burner 7 is used, a necessary portion of the air - combustion exhaust gases - is discharged.

The waste heat contained in the exhaust air and / or the exhaust gases from the module 1 and the cooled exhaust air of the modules 2 and 3 are cooled after the heat exchanger 8 in a downstream heat exchanger 10 again. The transmitted heat is supplied to the supply air for the module 3.

The heated material to be dried is reloaded into the module 2 by means of an internal or external transport device 5. In this module 2, the exhaust air of the subsequent module - either another module 2 or the module 3 - fed. This hot exhaust air contains because of the largely completed there drying process little moisture and can be further loaded in module 2 with moisture. For this purpose, additional heat energy is supplied.

If in module 2 one of the parameters drying product temperature, exhaust air temperature and supply air temperature is exceeded or exceeds the temperature difference within a predeterminable unit of time - temperature increase rate - a predetermined limit, then the heat supply of the burner 7 or the air heater 9 and the supply of air through the split / switchover flap 12 partially or completely interrupted.

The exhaust air from one or more modules 2 is supplied to the preceding module 1 or the air / air heat exchanger 8 of the module 1. Part of the waste heat remaining in the exhaust air after the heat exchanger 8 is supplied to the supply air of the module 3 by means of a second air / air heat exchanger 10. The cooled exhaust air is discharged as exhaust air, for example, over the roof

When using air heaters 9, which can be operated in all embodiments, not only electrically but also by steam, eliminating the use of waste heat from the module 4 in the burners 7 and the components pressure equalization valve 11 and optional regenerator 13 in the form, for example the thermally active mass. The exhaust air from the module 4 is then supplied to the supply air before the second heat exchanger 10 and discharged in the absence of demand on the supply air duct, as shown in Fig. 3 is shown.

The essentially independently controlled modules 1 to 4 are coordinated via a control unit serving as a control or regulation device 15. This compound control controls the loading and unloading of the modules 1 to 4, the control of bypass valves - such as the flaps 11 and 12 - and coordinates the use of energy.

The discharge of the modules 1 to 4 can be done for example by tilting the entire system with fixed modules 1 to 4 without fan support. Furthermore, a single tilt discharge without fan support is conceivable. Furthermore, a discharge supported by a fan of the stationary modules 1 to 4 can take place.

Fig. 3 contains a simplified drawing: analogous to today's industrial cycle dryers circulating air and supply air is controlled by flaps on the suction side of the fan. The separate from the supply air representation of the circulating air in the modules 2 and 3 is only for clarity.

In a further advantageous embodiment, several variants for heat supply in a dryer can be realized. That is, both burners 7 and electric or steam-driven air heaters 9 can be realized in a single dryer. Depending on the requirement and depending on the task of the individual modules 1 to 3, one or the other type of heating device or heating device can be particularly advantageous.

1. 1. Trockner zur Trocknung von Trocknungsgut, mit einer Aufnahme für das Trocknungsgut, einer Luftführung zur Führung von Luft zu der Aufnahme und einer Heizeinrichtung zur Erwärmung der Luft, wobei die Aufnahme mehrere nacheinander angeordnete Module (1, 2, 3, 4) zum Aufheizen, Trocknen oder Abkühlen des Trocknungsguts aufweist und wobei zumindest einem Modul (1, 2, 3, 4) eine Transporteinrichtung (5) zum Weitertransport des Trocknungsguts von diesem Modul (1, 2, 3) oder einem Modul (1, 2, 3) zum nächsten Modul (2, 3, 4) zugeordnet ist.
2. 2. Trockner nach Punkt 1, wobei eine Abluft eines Moduls (2, 3, 4) oder mehrerer Module (2, 3, 4) zumindest teilweise eine Zuluft eines davor angeordneten, vorzugsweise des direkt davor angeordneten, Moduls (1, 2, 3) oder mehrerer davor angeordneter Module (1, 2, 3) bildet und/oder als Verbrennungsluft der Heizeinrichtung nutzbar ist.
3. 3. Trockner nach Punkt 1 oder 2, wobei Wärme einer Abluft eines Moduls (2, 3, 4) oder mehrerer Module (2, 3, 4) zumindest teilweise auf eine Zuluft und/oder Umluft eines davor angeordneten, vorzugsweise des direkt davor angeordneten, Moduls (1, 2, 3) oder mehrerer davor angeordneter Module (1, 2, 3) - direkt oder mittels eines oder mehrerer Wärmetauscher (8), vorzugsweise Luft/Luft-Wärmetauscher (8) - übertragbar ist.
4. 4. Trockner nach einem der Punkte 1 bis 3, wobei vor einem Modul (4) zum Abkühlen des Trocknungsguts ein Modul (3) zur Kontrolle des Feuchtegehalts des Trocknungsguts angeordnet ist.
5. 5. Trockner nach einem der Punkte 1 bis 4, wobei eine Zuluft eines Moduls (3) zur Kontrolle des Feuchtegehalts des Trocknungsguts zumindest teilweise Luft ist, die mittels eines Wärmetauschers (10), vorzugsweise eines Luft/Luft-Wärmetauschers (10), erwärmt ist, der thermische Energie von der Abluft eines Moduls (1) zum Aufheizen des Trocknungsguts und/oder von der Abluft eines anderen Moduls (2, 3) oder des Moduls (4) zur Kontrolle des Feuchtegehalts des Trocknungsguts selbst bezieht.
6. 6. Trockner nach einem der Punkte 1 bis 5, wobei eine Zuluft eines Moduls (4) zum Abkühlen des Trocknungsguts einem Aufstellraum oder einer Umgebungsluft entnehmbar ist.
7. 7. Trockner nach einem der Punkte 1 bis 6, wobei ein Abluftkanal ein oder mehrere Aufteil- und/oder Umschaltelemente, vorzugsweise Aufteil- und/oder Umschaltklappen (12), aufweist.
8. 8. Trockner nach einem der Punkte 1 bis 7, wobei ein Verbrennungsluftkanal eine Druckausgleichsklappe (11) aufweist.
9. 9. Trockner nach einem der Punkte 1 bis 8, wobei zwischen jeweils zwei Modulen (1, 2, 3, 4) eine Transporteinrichtung (5) angeordnet ist, wobei vorzugsweise die Transporteinrichtung (5) ein Förderband oder eine Rutsche oder Rutschrinne aufweist, oder wobei die Transporteinrichtung (5) als interne Mechanik eines Moduls (1, 2, 3, 4) ausgebildet oder in ein Modul (1, 2, 3, 4) integriert ist.
10. 10. Trockner nach einem der Punkte 1 bis 9, wobei vor der Aufnahme eine Trocknungsgut-Zuführeinrichtung (6) angeordnet ist, wobei vorzugsweise die Trocknungsgut-Zuführeinrichtung (6) eine Wiegeeinrichtung für das Trocknungsgut aufweist.
11. 11. Trockner nach einem der Punkte 1 bis 10, wobei mindestens ein Modul (1, 2, 3, 4) und vorzugsweise mehrere oder alle Module (1, 2, 3, 4) als Takttrockner ausgebildet sind.
12. 12. Trockner nach einem der Punkte 1 bis 11, wobei der Trockner eine Steuer- oder Regelungseinrichtung (15) aufweist, die die Führung und/oder Menge der Zu- und/oder Abluft zu oder von den Modulen (1, 2, 3, 4) und/oder die Erwärmung von Zuluft zu den Modulen (1, 2, 3, 4) und/oder von in einem oder mehreren Modulen (1, 2, 3, 4) befindlicher Luft in Abhängigkeit von einem vorgebbaren Feuchtegehalt des Trocknungsguts steuert oder regelt.

Aspects of embodiments of the present invention are listed in the following points:

1. A dryer for drying material to be dried, with a receptacle for the material to be dried, an air guide for guiding air to the receptacle and a heating device for heating the air, the receptacle being several successive arranged modules (1, 2, 3, 4) for heating, drying or cooling of the material to be dried and wherein at least one module (1, 2, 3, 4) a transport device (5) for further transport of the material to be dried from this module (1, 2 , 3) or a module (1, 2, 3) to the next module (2, 3, 4) is assigned.
2. 2. Dryer according to item 1, wherein an exhaust air of a module (2, 3, 4) or more modules (2, 3, 4) at least partially arranged a supply air of a front, preferably arranged directly in front, module (1, 2, 3 ) or a plurality of previously arranged modules (1, 2, 3) forms and / or can be used as combustion air of the heating device.
3. 3. Dryer according to item 1 or 2, wherein heat of an exhaust air of a module (2, 3, 4) or more modules (2, 3, 4) arranged at least partially on a supply air and / or circulating air of a front, preferably arranged directly in front of it , Modules (1, 2, 3) or several previously arranged modules (1, 2, 3) - directly or by means of one or more heat exchangers (8), preferably air / air heat exchanger (8) - is transferable.
4. 4. Dryer according to one of the items 1 to 3, wherein a module (3) for controlling the moisture content of the material to be dried is arranged in front of a module (4) for cooling the material to be dried.
5. 5. Dryer according to any one of items 1 to 4, wherein a supply air of a module (3) for controlling the moisture content of the drying material is at least partially air, by means of a heat exchanger (10), preferably an air / air heat exchanger (10), heated is, the thermal energy from the exhaust air of a module (1) for heating the Trocknungsguts and / or from the exhaust air of another module (2, 3) or the module (4) for controlling the moisture content of the drying material itself.
6. 6. Dryer according to one of the items 1 to 5, wherein a supply air of a module (4) for cooling of the material to be dried is a storage room or an ambient air removed.
7. 7. Dryer according to one of the items 1 to 6, wherein an exhaust duct one or more distribution and / or switching elements, preferably division and / or switching flaps (12).
8. 8. Dryer according to one of the items 1 to 7, wherein a combustion air duct has a pressure equalization flap (11).
9. 9. A dryer according to any one of items 1 to 8, wherein between each two modules (1, 2, 3, 4) a transport device (5) is arranged, wherein preferably the transport device (5) comprises a conveyor belt or a chute or slide chute, or wherein the transport device (5) as internal mechanics of a module (1, 2, 3, 4) formed or in a module (1, 2, 3, 4) is integrated.
10. 10. A dryer according to any one of items 1 to 9, wherein prior to receiving a Trocknungsgut feed device (6) is arranged, wherein preferably the Trocknungsgut feed device (6) comprises a weighing device for the Trocknungsgut.
11. 11. Dryer according to one of the items 1 to 10, wherein at least one module (1, 2, 3, 4) and preferably several or all modules (1, 2, 3, 4) are designed as a clock dryer.
12. 12. The dryer according to any one of items 1 to 11, wherein the dryer has a control or regulating device (15), the leadership and / or amount of supply and / or exhaust air to or from the modules (1, 2, 3, 4) and / or the heating of supply air to the modules (1, 2, 3, 4) and / or in one or more modules (1, 2, 3, 4) located air in response to a predetermined moisture content of the drying material controls or regulates.

With regard to further advantageous embodiments of the dryer according to the invention, to avoid repetition, reference is made to the general part of the description and to the appended claims. Finally, it should be expressly noted that the embodiments described above merely serve to discuss the claimed teaching, but not limit these to the embodiments.

LIST OF REFERENCE NUMBERS

1

Module for heating

2

Module for drying

3

Module for controlling the moisture content

4

Module for cooling

5

transport means

6

Drying material supply means

7

burner

8th

heat exchangers

9

Air heaters

10

heat exchangers

11

Pressure equalization valve

12

Cut-to / change-over

13

regenerator

14

air filter

15

Control or regulation device

Claims (12)

Dryer for drying of drying material, with a receptacle for the drying material, an air guide for guiding air to the receptacle and a heater for heating the air, wherein the receptacle a plurality of successively arranged modules (1, 2, 3, 4) for heating, drying or at least one module (1, 2, 3, 4) has a transport device (5) for the further transport of the material to be dried from this module (1, 2, 3) or a module (1, 2, 3) to the next Module (2, 3, 4) is assigned,
characterized in that a Trocknungsgut feed device (6) is arranged before receiving. Dryer according to claim 1, characterized in that an exhaust air of a module (2, 3, 4) or more modules (2, 3, 4) at least partially arranged a supply air of a front, preferably arranged directly in front, module (1, 2, 3) or several previously arranged modules (1, 2, 3) forms and / or can be used as combustion air of the heater. Dryer according to claim 1 or 2, characterized in that heat of an exhaust air of a module (2, 3, 4) or more modules (2, 3, 4) at least partially arranged on a supply air and / or circulating air of a front, preferably the directly in front arranged, module (1, 2, 3) or more arranged in front of modules (1, 2, 3) - directly or by means of one or more heat exchangers (8), preferably air / air heat exchanger (8) - is transferable. Dryer according to one of claims 1 to 3, characterized in that a module (3) for controlling the moisture content of the material to be dried is arranged in front of a module (4) for cooling the material to be dried. Dryer according to one of claims 1 to 4, characterized in that a supply air of a module (3) for controlling the moisture content of the drying material is at least partially air, by means of a heat exchanger (10), preferably an air / air heat exchanger (10) is heated, the thermal energy from the exhaust air of a module (1) for heating the Trocknungsguts and / or the exhaust air of another module (2, 3) or the module (4) for checking the moisture content of the drying material itself refers. Dryer according to one of claims 1 to 5, characterized in that a supply air of a module (4) for cooling the Trocknungsguts a set-up room or an ambient air can be removed. Dryer according to one of claims 1 to 6, characterized in that an exhaust duct has one or more dividing and / or switching elements, preferably dividing and / or switching flaps (12). Dryer according to one of claims 1 to 7, characterized in that a combustion air duct has a pressure equalizing flap (11). Dryer according to one of claims 1 to 8, characterized in that between each two modules (1, 2, 3, 4) a transport device (5) is arranged, wherein preferably the transport device (5) comprises a conveyor belt or a chute or slide chute, or that the transport device (5) is designed as an internal mechanism of a module (1, 2, 3, 4) or integrated in a module (1, 2, 3, 4). Dryer according to one of claims 1 to 9, characterized in that the Trocknungsgut feed device (6) comprises a weighing device for the Trocknungsgut. Dryer according to one of claims 1 to 10, characterized in that at least one module (1, 2, 3, 4) and preferably several or all modules (1, 2, 3, 4) are designed as a clock dryer. Dryer according to one of claims 1 to 11, characterized in that the dryer has a control or regulating device (15), the leadership and / or amount of supply and / or exhaust air to or from the modules (1, 2, 3, 4) and / or the heating of supply air to the modules (1, 2, 3, 4) and / or in one or more modules (1, 2, 3, 4) located air in dependence on a predetermined moisture content of Drying material controls or regulates.

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