DE102014101298A1 - Method and device for heating, cleaning and drying of drying goods - Google Patents

Abstract

The invention relates to a device (1) for heating, cleaning and drying of dried goods under vacuum, comprising a drying chamber (10), with at least one vacuum pump (2.1, 2.2) for generating the vacuum in the chamber (10), with at least one evaporator (3) for generating steam of a heating fluid, wherein the vapor of the chamber (10) can be fed and condensed on the drying goods with heat dissipation to this, wherein from the drying goods liquid medium evaporable and by the pump (2.1, 2.2) is sucked, wherein at least one further liquid which is relatively high in relation to the heating fluid and loosely adhering solids which can form a mixture with the condensed heating fluid, which can be led from the chamber (10) and fed back to the evaporator (3), and wherein from a sump (34.1) of the evaporator (3) an enriched with the further liquid mixture stream peelable and a Separating device (4) can be fed, in which the heating fluid is evaporated and from which the heating fluid in vapor form and the other liquid in liquid form can be discharged. The apparatus (1) according to the invention is characterized in that from the mixture stream discharged from the drying chamber (10) at least a partial stream can be branched off and returned to the evaporator (3) via a separating device (4) in which the heating liquid is vaporisable, before it is returned to the evaporator (3). from which the heating liquid can be discharged in vapor form and from which the further liquid with any solid particles contained therein can be discharged and disposed of in liquid form or can be collected in a liquid tank (49). Moreover, the invention relates to a method of the type mentioned above.

Description

The invention relates to a device for heating, cleaning and drying of goods under vacuum, with a dry goods receiving drying chamber, with at least one vacuum pump for generating the vacuum in the drying chamber, with at least one evaporator for generating vapor of a boiling heating fluid, wherein the steam the drying chamber can be fed and condensed in the drying chamber to the drying goods with heat dissipation, wherein from the heated drying liquid medium and vaporizable by the vacuum pump either via a condenser or directly sucked, wherein during heating by the heating fluid from the drying goods at least one relative to the heating fluid higher boiling additional liquid and loosely adhering solids are washable or washable, which form a mixture with the condensed heating fluid, wherein the mixture of the drying chamber by a Kondensatableitu ng is derivable and the evaporator can be fed again and wherein from a sump of the evaporator enriched with the further liquid mixture stream and a separator can be fed, in which the heating fluid is evaporated, from which the heating fluid is dissipated in vapor form and from which the further liquid can be dissipated in liquid form.

Furthermore, the invention relates to a method for heating, cleaning and drying of dry goods under vacuum in a drying chamber, wherein a generated in an evaporator vapor of a compared to a liquid contained in the drying goods or parts thereof liquid medium higher boiling liquid condenses on the drying goods with heat is, wherein emerging from the drying goods medium is evaporated and is withdrawn either by a vacuum pump via a condenser or directly, wherein during heating by the heating fluid from the drying goods at least one higher-boiling additional liquid and loosely adhering solids are washed or washed off, form a mixture with the condensed heating fluid, wherein the mixture is discharged from the drying chamber and fed back to the evaporator and wherein from a bottom of the evaporator with the further liquid and contained therein e stripped of twine solids enriched mixture stream and fed to a separator in which the heating fluid is evaporated, from which the heating fluid is removed in vapor form and from which the further liquid is discharged in liquid form, in particular for operating a device of the type specified above.

An apparatus and a method of the type specified above are known from DE 44 46 204 C1 known. In operation of this device are in a drying chamber, the parts to be dried. The drying chamber is initially evacuated with a first vacuum pump with a condenser upstream. In the further course of the drying process, water vapor exiting from the parts to be dried and leakage air flowing into the vacuum system are extracted by means of a regulating device with a second vacuum pump and a condenser. The regulator creates a pressure barrier between the drying chamber and capacitors. From an evaporator kerosene vapor is introduced into the drying chamber via a pipeline. The kerosene vapor condenses on the surfaces of the parts to be dried and releases its heat of condensation to the parts, whereby their temperature is increased in view of the desired drying of the parts. The effluent condensate collects in a container and is returned by a feed pump in the evaporator. In an evaporator section with vertical tubes, the heat of vaporization is fed back to the kerosene. The steam flows from the pipes into an expansion space of the evaporator; entrained liquid is separated by means of internals. The steam then flows via a pipe into the drying chamber. Pure kerosene evaporates completely in the vertical tubes. On the other hand, if the kerosene condensate flowing into the container leads off or out of the parts to be dried. washed out further liquid, such as oil, so that the oil in the vertical tubes by evaporation of kerosene is largely deposited. The remaining kerosene-oil mixture is then driven upwardly by the kerosene vapor in the tubes, accumulates in the expansion space and travels, by gravity, through a valve and pressure barrier to a post-evaporation device. The post-evaporation device is evacuated by the second vacuum pump and the associated condenser and kept at a lower pressure than the main evaporator. As a result, the remaining kerosene portion evaporates from the mixture fed to the post-evaporation device and condenses in a downstream condenser, after which the condensate drains into a container. The non-evaporating oil is pumped with a discharge pump from the bottom of the Nachverdampfungseinrichtung for other use. After exceeding a predetermined temperature on the parts to be dried or reaching a predetermined concentration, for. B. determined with a density meter, a first valve is closed and opened a second valve, so that while avoiding energy expenditure in the reboiler contaminated with negligible oil content kerosene is fed directly to the container.

A disadvantage is considered in this device and in this method that the main evaporator is acted upon in certain phases of operation with relatively large proportions of the other liquid, such as oil in the heating fluid. This additional liquid is not evaporated, but heated together with each of the heating fluid to be evaporated. This leads to increased energy consumption. In addition, a high proportion of the further liquid in the heating fluid reduces the evaporation capacity of the main evaporator, in the extreme case to a no longer sufficient for the heating and drying process low power.

For the present invention, therefore, the task is to provide a device and a method of the type mentioned above, which avoid the disadvantages mentioned and which in particular low energy consumption at high heating and drying capacity and a very constant high evaporation capacity of the evaporator can be achieved.

According to the invention, the solution of the part of the object relating to the device succeeds with a device of the type mentioned above, which can be branched off from the mixture flow discharged from the drying chamber before its return to the evaporator, and via a separating device in which the heating fluid is vaporizable, from which the heating fluid in the form of vapor can be discharged and from which the further liquid with any solid particles contained therein in liquid form can be discharged and disposed of or collected in a liquid tank.

The device according to the invention advantageously ensures that the heating fluid is supplied to the evaporator without any further liquid contained therein or at least with a substantially reduced content of the further fluid. An unnecessary heating of the non-evaporating further liquid is thus completely or at least largely avoided. At the same time an undesirable reduction of the evaporation performance of the evaporator is prevented because this now no or only little power-reducing additional liquid is supplied with the heating fluid.

Preferably, a single separation device is provided in the device, to which the mixture flow from the bottom of the evaporator and the mixture flow from the drying chamber or the partial stream of the mixture flow from the drying chamber can be fed. As a result, the plant engineering effort is kept low.

Alternatively, two separate separation devices may be present, wherein a first separator, the mixture flow from the bottom of the evaporator and a second separator, the mixture flow from the drying chamber or the partial stream of the mixture flow from the drying chamber can be fed.

Furthermore, the invention proposes that the separation device (s) is connected to the drying chamber via a / a respective vapor line and that by this steam line (s) of the / the separation device (s) discharged Heizflüssigkeitsdampf can be introduced directly into the drying chamber , In this way, the Heizflüssigkeitsdampf generated in the separator or the separating devices can be used directly for heating the drying goods in the drying chamber.

Alternatively, it is provided that at least one capacitor is connected downstream of the separating device (s) and that the heating liquid vapor discharged from the separating device (s) can be condensed in the condenser and can be fed to the evaporator as heating liquid or can be collected in a heating liquid tank.

A supplementary measure for ensuring a vaporization capacity of the evaporator which is as constant as possible is that the device preferably has means for detecting the evaporating power of the evaporator, that at a detected evaporating power above a predefinable limit no mixture can be withdrawn from the bottom of the evaporator and that at one detected Evaporating power below the limit mixture from the bottom of the evaporator removable and the separator is fed.

The device further preferably has a switching device, by means of which in phases in which the separator is fed to a mixture from the bottom of the evaporator, the separation device, the discharged from the drying chamber mixture is fed at least in a partial stream. Thus, a good utilization of the separator is ensured, with the processing of mixture from the bottom of the evaporator has priority.

Suitably, the device has a first vacuum pump and a first capacitor associated therewith, wherein in a first phase of operation of the device by means of the first vacuum pump, the drying chamber without supply of Heizflüssigkeitsdampf from the evaporator to a first vacuum is evacuated and thereby withdrawn vapor of the liquid medium in the first capacitor condensable and derived therefrom and disposable or collectable in a medium tank. This allows the device in a first Operating phase, an energy-saving vacuum drying without heating the dry goods.

Furthermore, the device according to the invention is provided that it has a second vacuum pump and a second capacitor associated therewith and a separator, wherein in a second phase of operation of the device by means of the second vacuum pump, the drying chamber to a second, lower vacuum evacuated and then with Heizflüssigkeitsdampf from the Evaporator is chargeable, in which case from the drying chamber withdrawn Heizflüssigkeits- and medium vapor is condensed in the second condenser and wherein the condensate in the condenser downstream separator in heating fluid and liquid medium is separable, the heating fluid can be supplied to the evaporator or in a / the Heizflüssigkeitstank collectible and the liquid medium is derivable or can be collected in a / the medium tank. The heating fluid, eg. As kerosene, and the liquid medium, in many applications of the device water, differ in their density usually so strong that a separation due to the density difference is easily possible.

As already mentioned above, for a good function of the device a constantly high evaporation capacity of the evaporator is important. This contributes to the fact that preferably a surge tank with an inlet, an overflow and a return for heating fluid upstream of the evaporator or integrated into the evaporator, wherein the surge tank ensures a constant Heizflüssigkeitspegel in the evaporator during its evaporation operation.

A spatially and energetically favorable arrangement is achieved when the evaporator and / or the expansion tank is installed inside the drying chamber / is. A separate space outside the drying chamber and external lines are hereby advantageously saved. By a suitable and clever design and arrangement of evaporator and / or expansion tank, in particular a flat wall-parallel construction, the receiving volume of the drying chamber for the dried goods is practically not noticeably reduced

An even more space-saving spatial integration of evaporator and / or expansion tank is achieved in that preferably one / the housing of the evaporator and / or the surge tank is wholly or partially integrated within a wall, a ceiling and / or a bottom of the drying chamber / is.

In order not to rely on gravity in the promotion of the various liquids in the device, it is proposed that in the Heizflüssigkeitsrücklauf a first liquid pump and in the Kondensatableitung a second liquid pump is arranged.

To increase the reliability of the device expedient the Heizflüssigkeitsrücklauf and condensate drainage via lines with switchable valves are connected to each other so that either the first pump or the second pump alone promotes the liquid in the heating fluid return and in the condensate drainage. Also, there is the advantageous possibility to carry out maintenance or repair work on one of the two pumps during operation of the device.

Another measure to ensure a high operational reliability of the device is that expediently the first liquid pump and the second liquid pump is preceded by a liquid intermediate storage tank with liquid level regulation as dry running protection.

Furthermore, it is preferable for the / each separating device to be followed by a liquid from the liquid pump discharging the separating device (s), which also offers independence from gravity conveying.

During operation of the device, it may happen that solid dirt particles are washed off and removed from the drying goods by the heating fluid condensing on the drying goods. To keep such dirt particles from the evaporator, the evaporator and / or the / each separation device is expediently preceded by at least one liquid filter.

To further improve the energy balance of the device and the method according to the invention, provision is made for a heating liquid cooler to be arranged in a line feeding the heating liquid tank and / or a liquid cooler to be arranged in a liquid tank for the further liquid. The heat recovered in the radiator or radiators is suitably reused elsewhere, e.g. for preheating the heating fluid before it enters the evaporator.

To promote the effectiveness of the separation device (s), it is proposed that the separation device (s) is / are equipped with an internal or external heating device.

The solution of the part of the problem relating to the method succeeds according to the invention with a method of the type mentioned in the introduction characterized in that at least a partial stream is diverted from the mixture stream discharged from the drying chamber before its return to the evaporator and passed through a separation device in which the heating liquid is evaporated, from which the heating liquid is removed in vapor form and from which the further liquid in liquid Mold with the contained therein any solids is removed and disposed of or collected.

With the method according to the invention, the advantages already explained above in connection with the device are achieved.

In a further embodiment of the method it is provided that the mixture flow from the bottom of the evaporator and the partial flow of the mixture flow from the drying chamber of the same separation device are supplied.

Furthermore, it is proposed for the method that the heating liquid vapor discharged from the separating device (s) is introduced directly into the drying chamber. An intermediate condensation with subsequent re-evaporation is thus advantageously avoided.

Alternatively, the heating liquid vapor discharged from the separator (s) may be condensed and supplied as heating liquid to the evaporator or collected in a heating liquid reservoir.

For needs-based control of the process, it is preferably provided that the evaporating power of the evaporator is detected that at an evaporation power above a predetermined limit no mixture is withdrawn from the bottom of the evaporator and that withdrawn at an evaporation rate below the threshold mixture from the bottom of the evaporator and the separation device is supplied.

In phases in which no mixture from the sump of the evaporator is fed to the separation device, it is expedient for the separation device to supply the mixture discharged from the drying chamber at least in a partial flow in order to utilize the separation device effectively.

For the purpose of saving heat energy, the drying chamber is preferably evacuated to a first vacuum in a first process phase without supply of heating liquid vapor and the liquid medium passing from the drying goods into the vapor phase is withdrawn, condensed and discharged or collected.

Further, it is preferably provided for the method that in a second phase of the process, the drying chamber is evacuated to a second, deeper vacuum, that then the drying chamber heating liquid vapor is supplied and thereby withdrawn from the drying chamber Heizflüssigkeitsdampf and emerging from the drying goods or parts of the drying medium vapor withdrawn and condensed, the condensate is separated into heating fluid and the condensed medium withdrawn from the drying goods or parts thereof, the heating fluid is supplied to the evaporator or collected in a Heizflüssigkeitsvorrat and medium is discharged or collected.

In order to increase the efficiency of the separating device (s), it is further proposed that the mixture supplied to the separating device or the mixtures supplied to the separating devices be heated in the separating device (s) or externally in front of the separating device (s).

In the following an embodiment of the invention will be described with reference to a drawing.

The only 1 The drawing shows a simplified system diagram of a device according to the invention for heating, cleaning and drying of drying goods.

A first essential part of the device 1 is an evacuable drying chamber 10 , which receives drying goods, not shown here. The drying chamber 10 is for this purpose equipped with at least one door or lid, not shown.

The drying chamber 10 is an evaporator 3 upstream, in which a heating fluid, such as kerosene, is evaporable by supplying heat. From the evaporator 3 leads a steam supply 12 in the interior of the drying chamber 10 , The evaporator 3 can also in the drying chamber 10 be arranged.

From the drying chamber 10 go an evacuation line 11 starting in two strands of wire 11.1 and 11.2 branched and in the two of the drying chamber 10 downstream vacuum pumps 2.1 and 2.2 are arranged. This is the vacuum pump 2.2 in the wiring harness 11.2 , Behind the vacuum pump 2.2 run the strands of wire 11.1 and 11.2 back to a common line 11 together, in which the vacuum pump 2.1 is arranged.

Behind the vacuum pump 2.1 leads the line 11 in a first capacitor 5.1 , Behind the vacuum pump 2.2 branches from the wiring harness 11.2 a line 11.3 that's off to a second capacitor 5.2 leads. From the two capacitors 5.1 and 5.2 ever goes a liquid line 51 respectively. 52 starting, leading to a common fluid line 61 merged into a separator 6 lead.

The separator 6 has two outgoing fluid lines 62 and 63 , The fluid line 62 leads through a buffer tank 35.1 to the inlet of a pump 36.1 , The fluid line 63 leads to a medium tank 69 ,

From the pressure side of the pump 36.1 leads a supply line 31 via two parallel filters 37.1 and 37.2 to a the evaporator 3 upstream expansion tank 30 , In the expansion tank 30 there is an overflow 32 of which a return line 33 to the inlet side of the intermediate storage tank 35.1 returns. From the expansion tank 30 also leads a line section 31 ' to the evaporator 3 , The expansion tank 30 can, like the evaporator 3 , also in the drying chamber 10 be arranged. The expansion tank 30 Can also be used as a device in the evaporator 3 be integrated.

From the drying chamber 10 goes from the bottom area a condensate drainage 14 starting in two strands of wire 14.1 and 14.2 branched. The wiring harness 14.1 leads directly to the inlet side of the intermediate storage tank 35.1 , The wiring harness 14.2 leads through another buffer tank 35.2 to the inlet of a second pump 36.2 ,

Behind the pump 36.2 branches the wiring harness 14.2 again in two strands 14.3 and 14.4 , The wiring harness 14.3 flows behind the pump 36.1 in the supply line 31 , From the wiring harness 14.3 also goes a heating fluid line 39.1 in the course of which a Heizflüssigkeitkühler 38 is arranged and placed in a Heizflüssigkeitstank 39 empties.

The wiring harness 14.4 leads to a third filter 37.3 , From its outlet leads a supply line 41 to a separator 4 , This separator 4 is also an evaporator in the embodiment shown.

From one at the bottom of the evaporator 3 arranged swamp 34.1 leads a derivative 34.2 also in the separator 4 ,

From the separator 4 goes a steam discharge 42 starting in a steam supply 13 in the drying chamber 10 opens, and a branch line 42 ' that in the second capacitor 5.2 flows, branches. It also starts from the separator 4 a liquid line 43 off, via a fluid pump 46 and a liquid cooler 48 in a liquid tank 49 leads.

In addition to the essential components shown in the drawing figure, in the various conduits of the device 1 arranged at the necessary and convenient places valves with which a flow through a pipe in question can be released or shut off. The valves are expediently remotely operable in order to adjust them appropriately from a higher-level control device. The sensors required for such devices for temperature, pressure, liquid level, flow rates, etc. are of course provided at the required locations. For reasons of clarity, the valves and sensors and the control device are not specifically shown in the figure, but in the device 1 of course available.

The following is the function of the device 1 in their operation and the course of the drying process explained.

For drying of drying goods they are in the open drying chamber 10 introduced, after which the drying chamber 10 is sealed airtight.

In a first phase, the drying chamber 10 without supply of Heizflüssigkeitsdampf by means of the vacuum pump 2.1 through the pipes 11 and 11.1 evacuated to a first vacuum, in which case from the drying goods in the vapor phase overflowing liquid medium, eg. As water, withdrawn in vapor form, in the condenser 5.1 condensed and over the lines 51 and 61 the separator 6 is supplied. In the separator 6 the liquid medium is separated from possibly entrained other liquid and then over the line 63 the medium tank 69 fed and collected in it. From this, the liquid medium is occasionally removed for disposal or other use or processing. If no medium is left, this first phase is ended.

In a second phase, the drying chamber 10 by means of the vacuum pump 2.2 or by means of both in series connected vacuum pumps 2.1 and 2.2 evacuated to a second, deeper vacuum. In addition, then the drying chamber 10 in the evaporator 3 supplied Heizflüssigkeitsdampf supplied. The Heizflüssigkeitsdampf condenses on the drying goods and gives off its heat of condensation to this, whereby the drying goods are heated. Uncondensed heating fluid vapor and medium vapor emerging from the drying goods or parts of the drying goods are passed through the line 11 from the drying chamber 10 subtracted and in the condenser 5.1 and / or in the condenser 5.2 condensed. Subsequently, the condensate is in the separator 6 in heating fluid and separated the drying goods or parts thereof extracted condensed medium. The heating fluid is transferred via the line 62 and the temporary storage container 35.1 to the pump 36.1 directed by the latter and by the line 31 over the expansion tank 30 back to the evaporator 3 fed. That in the separator 6 from the heating fluid separated medium is through the line 63 derived and in the medium tank 69 collected.

In the drying chamber 10 be of the drying goods during heating by the heating fluid at least one with respect to the heating fluid higher boiling additional liquid, eg. As oil, and possibly loose adhering solids or washed off, which form a mixture with the condensed heating fluid. The mixture is passed through the condensate drain 14 from the drying chamber 10 derived and over the line branch 14.1 , the cache bin 35.1 , the pump 36.1 , The administration 31 , the expansion tank 30 and the line 31 ' the evaporator 3 fed again. From the swamp 34.1 of the evaporator 3 a mixture stream enriched in the further liquid and any solids present therein is withdrawn and passed through the conduit 34.2 the separator 4 fed. By means of the heater 44 is in the separator 4 the heating fluid evaporates and in vapor form through the steam discharge 42 dissipated. The additional liquid is removed from the separator 4 in liquid form through the liquid line 43 by means of the pump 46 and over the radiator 48 dissipated and in the tank 49 collected and saved. From the tank 49 From time to time, the other fluid is removed for disposal or other use or processing.

From the out of the drying chamber 10 through the condensate drainage 14 discharged mixture stream is at least in case of need a partial flow in the line branch 14.2 branched off and over the buffer tank 35.2 and the pump 36.2 the separator 4 fed. The heating fluid contained in the supplied mixture flow is in the separator 4 vaporized and therefrom in vapor form by the steam discharge 42 dissipated. The further liquid contained in the supplied mixture stream is in liquid form with the contained therein any solids content through the line 43 by means of the pump 46 and over the radiator 48 or another cooling device dissipated and in the tank 49 collected and saved.

About the of the line branch 14.2 outgoing line branch 14.3 can, depending on requirements, liquid heating medium through the radiator 38 and the line 39.1 the heating fluid tank 39 supplied or vice versa taken from this.

The one from the separator 4 through the pipe 42 Dissipated Heizflüssigkeitsdampf is either through the steam supply 13 directly into the drying chamber 10 initiated or he is through the branch line 42 ' the capacitor 5.2 supplied, there condensed and as heating fluid to the evaporator 3 fed again.

During the second phase of the drying process, the evaporator evaporates 3 detected by suitable measuring equipment. At a detected evaporation capacity above a predeterminable limit no mixture from the sump 34.1 of the evaporator 3 deducted, as a high evaporation rate indicates that virtually pure heating fluid in the evaporator 3 pending. At an evaporation rate below the limit, however, mixture from the bottom 34.1 of the evaporator 3 subtracted and the separator 4 fed, as a lower evaporation line is an indication that in the evaporator 3 has upcoming heating fluid too high content of the other liquid.

To use with only one separator 4 get along, is in phases, in which the separator 4 no mixture from the swamp 34.1 of the evaporator 3 is fed, the separator 4 that from the drying chamber 10 discharged mixture supplied at least in a partial stream.

Alternatively, the swamp 34.1 and the drying chamber 10 also be followed by its own separation device.

For controlling and monitoring the device and the drying process, it is expedient to use a programmable electronic control unit, not specifically shown in the drawing, such as a programmable logic controller (PLC). By suitable measuring means, such as temperature sensors, pressure sensors, level sensors, flow measuring devices, etc., the control unit, the necessary information is supplied, which then converts the control unit according to their programming in control signals, which are given to pumps, valves, heaters, etc.

LIST OF REFERENCE NUMBERS

1

 contraption

10

 drying chamber

11

 evacuating line

11.1

 Wiring harness for first phase

11.2

 Wiring harness for second phase

11.3

Lead by 11.2 to 5.2

12

Steam supply from 3

13

Steam supply from 4

14

 condensate drainage

14.1-14.4

Branches of 14

2.1

 first vacuum pump

2.2

 second vacuum pump

3

 Evaporator

30

Expansion tank before 3

31

 Intake

31 '

Lead by 30 to 3

32

 overflow

33

 Return line

34.1

 swamp

34.2

Derivation of 34.1 to 4

35.1, 35.2

 Intermediate storage container

36.1, 36.2

 liquid pumps

37.1, 37.2, 37.3

 filter

38

 Heizflüssigkeitskühler

39

 Heizflüssigkeitstank

39.1

Direction from / to 39

4

 separating device

41

 supply

42

 steam discharge

42 '

Branch of 42 to 5.2

43

Liquid line of 4 to 49

44

 heater

46

 liquid pump

48

 Cooler for second liquid

49

 Tank for second liquid

5.1

 first capacitor

5.2

 second capacitor

51

Lead by 5.1 to 6

52

Lead by 5.2 to 6

6

 separator

61

Supply line too 6

62

 Discharge for heating fluid

63

 Discharge for liquid medium

69

 medium tank

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4446204 C1 [0003]

Claims (27)

Contraption ( 1 ) for heating, cleaning and drying of dry goods under vacuum, with a dry goods receiving drying chamber ( 10 ), with at least one vacuum pump ( 2.1 . 2.2 ) for generating the vacuum in the drying chamber ( 10 ), with at least one evaporator ( 3 ) for producing steam of a boiling heating fluid, wherein the steam of the drying chamber ( 10 ) and in the drying chamber ( 10 ) can be condensed on the drying goods with heat being dissipated, whereby liquid medium can be vaporized from the heated drying goods and conveyed by the vacuum pump ( 2.1 . 2.2 ) either via a capacitor ( 5.1 ) or is directly sucked, wherein during the heating by the heating liquid from the drying goods at least one higher than the heating liquid further boiling liquid and loosely adhering solids are washable or washable, which form a mixture with the condensed heating fluid, wherein the mixture from the drying chamber ( 10 ) by a condensate drain ( 14 ) and the evaporator ( 3 ) can be fed again and whereby from a swamp ( 34.1 ) of the evaporator ( 3 ) a mixture stream enriched with the further liquid and a separating device ( 4 ) can be fed, in which the heating fluid is evaporated, from which the heating fluid is dissipated in vapor form and from which the further liquid in liquid form can be discharged, characterized in that from the drying chamber ( 10 ) discharged mixture stream before its return to the evaporator ( 3 ) at least a partial flow branched off and via a separating device ( 4 ) is feasible, in which the heating fluid is evaporated, from which the heating fluid can be discharged in the form of vapor and from which the further liquid containing any solid fractions in liquid form can be discharged and disposed of or in a liquid tank ( 49 ) is collectable. Device according to claim 1, characterized in that a single separating device ( 4 ), which is the mixture flow from the sump ( 34.1 ) of the evaporator ( 3 ) and the mixture flow from the drying chamber ( 10 ) or the partial flow of the mixture flow from the drying chamber ( 10 ) can be supplied. Device according to claim 1 or 2, characterized in that the separating device (s) ( 4 ) with the drying chamber ( 10 ) via a / a steam line ( 13 . 42 ) and that through this vapor line (s) ( 13 . 42 ) from the separating device (s) ( 4 ) discharged Heizflüssigkeitsdampf directly into the drying chamber ( 10 ) can be introduced. Device according to claim 1 or 2, characterized in that the separating device (s) ( 4 ) at least one capacitor ( 5.2 ) and that from the separating device (s) ( 4 ) dissipated Heizflüssigkeitsdampf in the condenser ( 5.2 ) condensable and as heating fluid to the evaporator ( 3 ) or in a Heizflüssigkeitstank ( 39 ) is collectable. Device according to one of claims 1 to 4, characterized in that it comprises means for detecting the evaporating power of the evaporator ( 3 ) that at a detected evaporation performance above a predeterminable limit no mixture from the sump ( 34.1 ) of the evaporator ( 3 ) is removable and that at a detected evaporation rate below the threshold mixture from the sump ( 34.1 ) of the evaporator ( 3 ) removable and the separating device ( 4 ) can be fed. Device according to one of claims 2 to 5, characterized in that it comprises a switching device, by means of which in phases, in which the separating device ( 4 ) no mixture from the swamp ( 34.1 ) of the evaporator ( 3 ), the separation device ( 4 ) from the drying chamber ( 10 ) discharged mixture can be supplied at least in a partial stream. Device according to one of claims 1 to 6, characterized in that it comprises a first vacuum pump ( 2.1 ) and a first capacitor ( 5.1 ), wherein in a first phase of operation of the device ( 1 ) by means of the first vacuum pump ( 5.1 ) the drying chamber ( 10 ) without supply of Heizflüssigkeitsdampf from the evaporator ( 3 ) is evacuable to a first vacuum and wherein thereby withdrawn vapor of the liquid medium in the first capacitor ( 5.1 ) condensable and derivable therefrom and disposable or in a medium tank ( 69 ) is collectable. Device according to one of claims 1 to 7, characterized in that it comprises a second vacuum pump ( 2.2 ) and a second capacitor ( 5.2 ) as well as a separator ( 6 ), wherein in a second phase of operation of the device ( 1 ) by means of the second vacuum pump ( 2.2 ) the drying chamber ( 10 ) to a second, deeper vacuum evacuated and then with Heizflüssigkeitsdampf from the evaporator ( 3 ) is loadable, being thereby from the drying chamber ( 10 ) withdrawn Heizflüssigkeits- and medium vapor in the second capacitor ( 5.2 ) is condensable and wherein the condensate in the condenser ( 5.2 ) downstream separator ( 6 ) is separable in heating fluid and liquid medium, the heating fluid to the evaporator ( 3 ) or in a heating fluid tank ( 39 ) is collectible and that liquid medium derivable or in a / the medium tank ( 69 ) is collectable. Device according to one of claims 1 to 8, characterized in that a surge tank ( 30 ) with a feed ( 31 ), an overflow ( 32 ) and a return ( 33 ) for heating fluid the evaporator ( 3 ) or in the evaporator ( 3 ), the expansion tank ( 30 ) for a constant Heizflüssigkeitspegel in the evaporator ( 3 ) during its evaporation operation provides. Apparatus according to claim 9, characterized in that the evaporator ( 3 ) and / or the expansion tank ( 30 ) inside the drying chamber ( 10 ) are / is installed. Apparatus according to claim 9, characterized in that one / the housing of the evaporator ( 3 ) and / or the expansion tank ( 30 ) wholly or partly within a wall, a ceiling and / or a bottom of the drying chamber ( 10 ) are / is integrated. Device according to one of claims 9 to 11, characterized in that in the heating fluid return ( 33 ) a first fluid pump ( 36.1 ) and in the condensate drain ( 14 ) a second liquid pump ( 36.2 ) is arranged. Apparatus according to claim 12, characterized in that the heating fluid return ( 33 ) and the condensate drain ( 14 ) can be connected to one another via lines with switchable valves such that either the first pump ( 36.1 ) or the second pump ( 36.2 ) alone the liquid in the heating fluid return ( 33 ) and in the condensate drain ( 14 ) promotes. Apparatus according to claim 12 or 13, characterized in that the first fluid pump ( 36.1 ) and the second fluid pump ( 36.2 ) one liquid intermediate storage tank each ( 35.1 . 35.2 ) is preceded by liquid level regulation as dry running protection. Device according to one of claims 1 to 14, characterized in that the / each separation device ( 4 ) a liquid from the separation device (s) ( 4 ) conveying fluid pump ( 46 ) is connected downstream. Device according to one of claims 1 to 15, characterized in that the evaporator ( 3 ) and / or the / each separating device ( 4 ) at least one liquid filter each ( 37.1 . 37.2 . 37.3 ) is connected upstream. Apparatus according to claim 4, characterized in that in a Heizflüssigkeitstank ( 39 ) Heating liquid supplying line ( 39.1 ) a Heizflüssigkeitkühler ( 38 ) and / or that in a liquid tank ( 49 ) for the further liquid this supplying liquid line ( 43 ) a liquid cooler ( 48 ) is arranged. Device according to one of claims 1 to 17, characterized in that the separating device (s) ( 4 ) with an internal or external heating device ( 44 ) is / are equipped. Method for heating, cleaning and drying of drying goods under vacuum in a drying chamber ( 10 ), one in an evaporator ( 3 ) produced vapor is condensed with respect to a liquid medium contained in the drying goods or parts thereof higher-boiling heating liquid at the drying goods with heat release, wherein from the drying goods leaking medium is evaporated and by a vacuum pump ( 2.1 . 2.2 ) either via a capacitor ( 5.1 ) or is withdrawn directly, wherein during the heating by the heating fluid from the drying goods at least one higher-boiling additional liquid and loose adhering solids are washed or washed off, which form a mixture with the condensed heating fluid, wherein the mixture from the drying chamber ( 10 ) and the evaporator ( 3 ) is recirculated and from a sump ( 34.1 ) of the evaporator ( 3 ) a mixture stream enriched in the further liquid and any solids present therein is withdrawn and subjected to a separation device ( 4 ) is supplied, in which the heating fluid is evaporated, from which the heating fluid is removed in vapor form and from which the further liquid is discharged in liquid form, in particular for operating a device ( 1 ) according to one of claims 1 to 18, characterized in that from the drying chamber ( 10 ) discharged mixture stream before its return to the evaporator ( 3 ) branched off at least a partial flow and via a separation device ( 4 ) is conducted, in which the heating fluid is evaporated, from which the heating fluid is removed in vapor form and from which the further liquid in liquid form with the contained therein any solids content is removed and disposed of or collected. A method according to claim 19, characterized in that the mixture flow from the sump ( 34.1 ) of the evaporator ( 3 ) and the partial flow of the mixture flow from the drying chamber ( 10 ) of the same separating device ( 4 ). A method according to claim 19 or 20, characterized in that the from Separating device (s) ( 4 ) discharged Heizflüssigkeitsdampf directly into the drying chamber ( 10 ) is initiated. A method according to claim 19 or 20, characterized in that the from the separating device (s) ( 4 ) condensed Heizflüssigkeitsdampf condensed and as a heating fluid to the evaporator ( 3 ) or collected in a Heizflüssigkeitsvorrat. Method according to one of claims 19 to 22, characterized in that the evaporation capacity of the evaporator ( 3 ) is detected that at an evaporation capacity above a predeterminable limit no mixture from the sump ( 34.1 ) of the evaporator ( 3 ) is withdrawn and that at an evaporation rate below the threshold, mixture from the sump ( 34.1 ) of the evaporator ( 3 ) and the separation device ( 4 ) is supplied. Method according to one of claims 20 to 23, characterized in that in phases in which the separation device ( 4 ) no mixture from the swamp ( 34.1 ) of the evaporator ( 3 ), the separation device ( 4 ) from the drying chamber ( 10 ) discharged mixture is supplied at least in a partial stream. Method according to one of claims 19 to 24, characterized in that in a first phase of the process the drying chamber ( 10 ) is evacuated without supply of Heizflüssigkeitsdampf to a first vacuum and in that case deducted from the drying goods in the vapor phase passing liquid medium, condensed and discharged or collected. Method according to one of claims 19 to 25, characterized in that in a second process phase, the drying chamber ( 10 ) is evacuated to a second, deeper vacuum that then the drying chamber ( 10 ) Heizflüssigkeitsdampf is supplied and that thereby from the drying chamber ( 10 ) withdrawn Heizflüssigkeitsdampf and withdrawn from the drying goods or parts of the dry goods medium vapor and condensed, the condensate in heating fluid and the drying goods or parts thereof extracted condensed medium is separated, the heating fluid to the evaporator ( 3 ) or is collected in a Heizflüssigkeitsvorrat and medium is dissipated or collected. Method according to one of claims 19 to 26, characterized in that the separation device ( 4 ) or the separating devices ( 4 ) supplied mixtures in the / the separation device (s) ( 4 ) or externally in front of the separator (s) ( 4 ) is / are heated.

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