DE1610939A1 - Dry cleaning machine - Google Patents

Description

DR.-ING. WALTER ABiTZ I ί - Iflntftt- * " " - * - DR. DIETER MORF / JJ KF

- ^ -, Chemindus Munich

Patent attorneys

25 February 1966 U-899

ANGELHAHD HANOVIA,
113 Astor Street, Newark 07114, New Jereey, 7th St.A.

Dry cleaning machines,

The invention relates to dry cleaning machines and a · especially the effective and commercial use of Dry cleaning solvents *

In the case of dry cleaning machines, the. for a home recovery. required time of great importance »since they the performance of the machine determines * a short work cycle This is especially true for troubled trousers desirable »because not only do you see a higher profit through this can achieve »but also a larger consumer volume consists «In the past few years there have been considerable ports, steps to reduce the duration of the fö ° oeken * cleaning cycle through the introduction of new low-boiling] ·

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Solvent _{Achieved f)} For example, the fluorocarbon-based solvent known in the trade as "Vale-lene" has reduced the time for removal of the solvent to 7 minutes from the conventional 30 minutes that for the removal of the solvent generally used in the Dry cleaning industries used Perohlor-Sthyien -lösungamittsl are required. The use of such low boiling solvents ei ¹ has a serious disadvantage because its cost can more Kaie higher than those of conventional solvent Pershloräthylen istο For this Qrande the mentioned new solvent in existing dry-cleaning machines due to their high Lösungsmitteiverluetes not used economically werdenο

Zn U.S. Patent _{οοββββ.> Β} (Patent Application 3ol _o 24o of 12 «August 1963) is a novel dry cleaning machine besehrieben, of which there is a main feature in the use of a pump ₉ required with da * mixtures of a liquid solvent, solvent vapor and air can be, and which is provided with means for the supply of cold solution medium for the inlet side of the pump, among other things the solvent · »attenuates ·? condense more effectively and reduce the loss thereof during operation of the machine.

The present invention is aimed at further improvements for oils

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Dry cleaning machines of the type described in the aforesaid patent described type directed.

The main object of the invention is to provide a Trockenrelnigungsmaschine, wherein the Lösungi "ittelverlust to such a low value herabgesetst" that the use of the mentioned expensive low-boiling solvent economically feasible 1st and equilateral the advantages are obtained of a considerably shorter dry-cleaning * · cycle ₀

Another object of the invention is to provide a dry cleaning _machine in which a novel method of reducing solvent losses is used, which is characterized by the use of vacuum and controlled heat generating pressure and temperature conditions at which the solvent boils off the laundry , in combination with a new type of solvent cleaning and recovery system, which causes rapid and complete condensation of the dry cleaning solution and its separation from the air carried »

Another main object of the invention is use

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a double puncture system with automatic lubrication but Creation of a vacuum in the dry cleaning aaehine, in order to reduce the solution to total losses no more than a year ago « which occur in the periodic operation of such machines "

Further objects and advantages of the invention also result in the following description in connection with the * lying drawings, namely 'show:

1 shows a schematic representation; a preferred option

guidance · form of the inventive dry cleaning · machine;

Fig. 2 is a schematic view of the rice and tea control device;

Fig. 3 is a bottom view of an automatic Sloherheltssohnileranlage for those in the trophy cleaning machine used vacuum pumps and

Figo * ή a schematic view of the sequential control motor and the vacuum controlled: Sehalter.

In the drawing, 11 denotes the Vasehkejnwr, dia · cylindrical

and is designed to withstand a vacuum can »The washing chamber is provided with a sealed front door. Inside the wash chamber 11 is a washing * basket or a washing drum 12 mounted »which has a perforated cylindrical wall and a shaft is rotatably mounted, which si; h through the rear wall of the A drive with a motor 14 extends washing chamber 11 and a conventional power transmission »which is indicated by the dash-dotted line Iß» is used for the rotary drive the washing drum 12 optionally with certain speeds » Bsi the preferred embodiment of the invention 4 three optional turning steps are provided »n & nlleh one Urawälzdrehzahlj at which the acting on the laundry Centrifugal force is less than gravity »a vertical rotation» at which the centrifugal force, measured on a slightly smaller radius than that of the washing drum, is equal to

the force of gravity, and a spin speed at which the centrifugal force 1st _e Since the sealing absbhliessende Vordeptüre the washing chamber 11 and the driver are much larger than the force acting on the wash items gravity of the washing drum 12 of a known conventional type, are "ie in the drawing not with further details

shown.

On the ¹ cylindrical wall of the washing drum 12 is tin · eltk-

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Trical heating device 18 is attached which, in the preferred embodiment, consists of a metal band which is wound onto the outer surface of the washing drum and is electrically insulated from it. A thermostat 19 is arranged on the washing drum, the task of which is to regulate the drying temperature in the washing chamber. The electrical connections of the heating elements 18 and the thermostat 19 are shown in FIG. The shaft 13, which carries the washing drum 12 and drives it to rotate, is partially hollow and at its flatter end part is provided with four insulated electrical sole rings, of which the slip rings 21 and 22 are connected to the heating element 18 and the slip rings 23 and 24 are connected to the thermostat 19 are ₈ with insulated and sealingly inserted wires running through the inside of the 1er hollow shaft. The aforementioned slip rings are supplied with electrical energy from the supply terminals 26 under the control of a relay 27 which is designed so that when the thermostat flows through the circuit ewlsohen the rings 23 and 24 due to a low temperature, the relay 27 is energized so that whose contacts assume the position drawn with a fully drawn line, which means that the heating element 18 is supplied with electricity

"Fi. * ßAD ORIGINAL

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the circuit between slip rings 23 and 2 * break, whereby the relay 27 is de-energized »» o Ali dl · Real contacts marked with a dash-dotted line * take a given position, it has the consequence that the Hot element 18 is de-energized and the cooling period of the washing, Chamber operated «The thermostat therefore serves to regulate the temperature the washing drum within specified limits during to maintain the period during which energy is supplied to the little one.

The solvent used during the dry cleaning cycle is initially stored in the storage container 31 » the jη its preferred embodiment two compartments 34 and 35, which by «a partition wall or a Weir 36 are separated »which latter the upper reaches of Allows solvent from compartment 34 to compartment 35, in order to separate the water floating on top from the heavier solvents in compartment 34. The solvent gets there from the storage container 31 to the Wasohkaamer 11 via tin Line 32 * regulated by a solenoid valve 33 that is normally in the closed position. !

. ■ ■

Another feature of the invention consists in a distillation », device 41, which is connected to a Uarnwasser-Rohrsohlaage 42 through which the warning water flow «ittele,;

BATH ORIGINAL

a solenoid valve 43 is regulated. The solvent is emptied from the washing chamber 11 into the distillation device through a line 37 in which a valve 38 is located. ngs form hydraulically actuated by pressurized water which is supplied via a line 39 'is controlled by a three-way Elektronagnetventil 4o "The use of a water line pressures» of about l _e 4o kg / cm (about Zo psi), which is normally in a dry "Cleaning machine system for actuating the drain valve 38 is available" facilitates a closer closing of these valves than can be achieved if an expensive electromagnetic valve is not used and it is particularly important to ensure a tight closing if fiber parts or dirt or the like . are present on the valve surfaces *

The distillery unit is provided with a steam outlet in order to conduct evaporated solvent via a line 44 to a cold water condenser 45, which is provided with cold water pipe coils 47. Evaporated solvent that condenses in the cold water condenser 45 is returned to the storage tank 31 through a line k6.

8th-

For reasons of economy, the cold water flow is in the Tube coils 4? regulated by a valve 48 'that open a temperature sensor 49 in tier line 46 responds, so that cold water is only supplied when it is a result a vapor load in the condenser is required.

As shown in FIG. 1, a line 51 connected to a Solenoid valve 52 is provided ', for the supply of Solvent floating on top © impurities contains, from the compartment 35 eng storage container »31 for Disposal device. The line 55 * soak through Valve 54 is regulated, is a * Druekausgleiohaleitung between the Waeehkfianer'11 and the distillation unit 41 < Their function is described in the following

To facilitate Üra the RelnlgungSTorgang can be used in the washing chamber dera solvent zueamen old minor amounts of a liquid Wasehnittels be initiated · Vie FIG · I shows _v 1st eintWasch- or "Reinlgungsidttelabgabeeinrlehtung 5o provided, which is a Ffllleitung 55g in which is • in Slektroinag & etventil 5β »And» it «ie ??. Is gave ·· "line 57 T © Reeh * n, is in the beg" in Klcktt ^ nagnetventil 58 and t to WaeehkavMr 11 FQH ^. A Druekausgl «icheleitu8g 59» wlohe dureh «in Blo $ fct? @ & Ftgnet ~

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valve is regulated in this way, connects the steam chamber of the Wasebkaramev 11 and the Waschraitteiabgabeeinrichtung 5o. The line 55 can be attached to a flexible hose »which is immersed in a container for the liquid detergent» In operation, when the washing chamber 11 is under vacuum, the valve 6o is opened, which creates a vacuum in the detergent dispenser 5o, which is then supplied with a quantity of detergent becomes _p which is sucked in by the vacuum when the valve 56 is opened. The valve 56 is then closed and the goose or part of the detergent filling in the detergent dispenser 5o is introduced into the washing chamber through a line 57 when the valve 58 is opened _a

A main feature of the invention is the recovery chamber 61, UXe ßo is designed that it allows operation at a slightly higher pressure of, for example, up to about 0.7 atfi (about Io psig) _β The chamber 61 is equipped with a steam inlet line and a steam outlet. Entepensioneventil 65 provided, which is set to any desired pressure of, for example, about ο «14 atfl (about 2 psig) to about o, 7 ata

(about Io psig) can be set. The recovery chamber 61 is also provided with internally carbonized pipe coils 64 and deflection walls 66, which are arranged in the darkest form

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'41

are that they are entering through line 62 solvent vapor Conduct in contact with the coils 64, which are supplied with a coolant, which is preferably in countercurrent to the direction of the solvent vapor flow flows and is introduced through a line 67 from a conventional cooling system 68, which is in the dashed-dotted box is shown and to the aas coolant is conducted via a line 69 icuruek · The recovery cam 61 should be sufficient in its volume be measured so that the steam speed in of the recovery chamber less than about 15 linear meters In the minute (about 50 linear feet / minute), so the solvent is fully recovered from the incoming vapors can be and about the ride of droplets condensed dissolving elements in the air Valve 63 leaks, avoid »

The solution waste, which condenses in the recovery chamber 61, is returned through a line 71 and the line 51 to the Kuia compartment 35 of the storage container 31. While most of the Lasungsmlttel-Raekgewinnungsryklu & is sufficient heat through the Löeungsmltteldfiepfe to the freezing of the solvent old to 6 ^ z "prevent _e Ifenn see However,

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Medium steam flow reduced, for example at the end of a cycle "freezes the solvent and collects it on the coils 64" A bypass line 72 "in which there is a solenoid valve 73" enables a defrost cycle "which is advantageously arranged during a short period of time before the start of each dry cleaning cycle wlrd _s to frozen solvent or water "that is accumulated on the coils 64" remove "

Another main feature of the invention consists in the vacuum pumping system, which has two vacuum pumps 81 and 82 which serve to generate a vacuum in the washing chamber 11 via a line 83 and to contribute to an effective recovery of the solvent. The pumps 8l and 82 are conventional piston pumps with oil lubrication and are cascaded one behind the other to achieve a vacuum in the t / asehkamaer of at least about 711 mm (28 ⁿ ) mercury and preferably up to 75o ami (29 1/2 ⁿ ) functional silver column to enable «As a result of the use of a double pump system, the pressure is in the. Wash chamber 11 so low at the end of the cycle that there is practically no loss of solvent due to liquid solvent remaining in the items to be cleaned.

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"As shown in FIG ₀ 1 is a conduit 84 which connects the pump 8l and 82, provided with a bypass line 35, infler calibrating a solenoid valve 86 is" and with a bypass SieherKeitsentflpannungsventil 9o 'A conduit 87, in the check ejn check valve 8th? is located, serves to steam emerging from the Pus-pe 82 eur Döstillierelnrichtung 41 st. conduct. In order to protect the pumps against material carried along, a filter 8? provided

In a preferred embodiment of the invention are the vacuum pumps 81 and §2 with automatic oil level regulating device provided »camouflage oil pump bearings against damage protect from insufficient lubrication. In FIG. 3, a pump housing lol is shown which Inlet chamber Io2 and an outlet chamber 1 © 3 as well as one Piston Io4 possesses. The pump housing is partially oiled filled »so that a spray or« splash lubrication of the Kolhan « drives Io6 is obtained · In the outlet line lo? The Pampe is a separator Io8, in which the Leaked gases are directed in a circular path » to separate oil droplets carried along in the oases « The separated oil is passed through a Kapillrleituug Io9 Einlaßkaaer Io2 curOekg ^ introduces «Furthermore is a

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111 provided, to which an inlet line 112 travels and the cheese via a line 113 on the floor with an Ul feed ·! * I'll be connected. A lift leads from the ul feed chamber Line 116, in which a check valve 117 is located, sum pusspen housing lol.

How the automatic ultrasonic mirror control system works is as followsα During normal operation of the vacuum pump will be entrained oil droplets from the Puapen conveyor la separator Io8 is constantly separated and through the capillary line Io9 returned to the inlet chamber Io2 of the pump, from which the return «w» housing lol took place through a drain Io5 The oil supply chamber is under the same vacuum as the pump housing lol ^ when the operation of the puape is shut off and atmospheric air will enter the chamber Io2 can, the pump housing lol reaches atmospheric pressure, but prevents the operation of the check valve 117 a loss of vacuum in the supply chamber 114., As a result, the pressure in the housing leads lol, the is exerted on the oil container 111 through the line 112, a transfer of oil from the oil container 111 via line 11? to Ulsufuhrkanmsr 11 *. When the pump starts again, is set in Sang, we do so in the manner described oil transferred to the UL supply chamber 114 automatically through the

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Line 116 as a result of the bedfltit ^ ng dee valve 117 in the Pump casing sucked lol. The line 112 is arranged so that that excess oil above the desired level lol by its own weight in the oil container 111 runs back. In this way, provided that the the oil level in the oil tank 111 is occasionally checked «

the protection against damage due to insufficient lubrication protected·

The working cycle of the motor drive and the various Solenoid valve, which in the erfindungsgenässen Troekenreinigungemasehins will be used by controlled by a sequential control problem »<here a conventional, switching device operated by a curve element for Time-controlled start-up · »Operating and shutdown stages of the dry cleaning process actuated. Although such ? @! ge3teueFunge @ inrlchtuftgen ar see are known so that no further description is required, refer to Flg. A referenced »which is a sehetaatisefee representation of the consequence et your euerungsBGhalter and electrical connections is that su? "Control of the main stages Ic of the work sequence of the dry cleaning machine be used;

As can be seen in the figure, the energy is supplied

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sun sequence controls »gate 121 from rails 122 from upper switch 123 · 124, 125 and 126 · The switch 125 responds to a certain vacuum in the washing chamber 11, as well as the switch 123. oils puncture these two switches will described below

The nature of the problem determining machine of the present invention is as follows. The items to be cleaned are placed in the washing drum, the door of the Wasohkaramer is closed and the vacuum pump 81 is started, including creating a vacuum in the washing chamber sur outside air extracted. In the arrangement of FIG. 4, switch 124 is closed when the machine is started. However, the sequencer motor is not energized "aafc switches 123" 125 and 126 remain open "At a certain pressure in the wash chamber, see FIG a pressure of _ß 28 kg / era ² abc. (4 paia) or less, the switch 125 closes so that the sequential control motor 121 can operate and the filling perlode is initiated. The switch 125 therefore acts as a safety device »since it prevents the process of the work sequence of the machine including the filling of the Wanchkanmer 11 ralt solvents» unless there is a suitable vacuum in the vasohkaoear »

^"16 ~ 20S810 / 0301 IIaD

which the absence of any essential leakage parts _β an inadequate sealing de: * Front door UoS.w, indicates · The age 125 can therefore be called "leak detector"

When the sequence control motor 121 is started, the valve 36 is closed and the solenoid valve 33 is closed Opened a certain tent room so that decision-making tools from compartment 3 * 1 of Vorx & sbehftlters 31 to the Wash chamber 11 pass through line 32 and the wash period can begin. The one in the detergent dispensing device 5o contained cleaning agent is in the Wash chamber 11 dtsrsh the opening of valve 58 initiated. When introducing solvent into the washing chamber 11 opens see switch 125 due to the reduced vacuum in FIG the Wasehkaionter · At this point, however, the switch is 126 closed, which means the continued operation of the sequence controls motors allows. During the washing period, the washing drum with the circulation wire during a basti bag of time driven for rotation

Prior to the completion of the Wanchsyllus the solenoid valve 54 is in the line 53 "wrlohe the Waaehkammer 11 and the connecting Bestillierelnriehtung ¹ H» ge5ffgi @ t to d @ n

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To equalize pressure in the system, and so does valve 52 opened »so that the solvent contaminated with water from the compartment 35 of the storage container 31 sur the distillation device can be derived via line 51. The addition of cold solvent in the direction of the distillation The purpose of this tent point is »the Varsnr water pipe 42 eu cool that can still be helped by the previous washing cycles, «odureh the sudden Evaporation of the solvent and formation of vapor bubbles In the line 37 is prevented »if the solvent emptied out of the washing tank on the distillation unit will ο

After the wash period, the drain valve 38 is in the line 37, which the wssehkasner and the Bestilliereittrichtwmg connects "opened so that solvent can be drained from the washing chamber" and the washing drum wii ^ d driven first with the distribution turning steel »over <see how to distribute the items to be cleaned »what <so that the locker speed is driven »by the solution *> Mechanically remove raitfcel from the items to be washed or cleaned. After the expiration «Uts sole oaring process becomes the rapid rotation of the washing drum during a course Interrupted for a period of 'for example 2o - 3o seconds ^

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to prevent the solvent from running out of the WasehkaMisr see below to complete.

The next period is the Trocicenperlode, during which the WaBchtroneel with the circulation gas windligness for rotation is driven »which during course interval · by the distribution speed can be interrupted. At the start During the period, all valves in the lines leading to the washing channel are closed and a vacuum is applied to the wasehkaa · · rear via line 83 by actuating the Va & niiqnnptn 81 and 82 exercised. At the beginning of the: The dry period will Valve 52 also closed and hot water enters the Coils 42 by opening the valve 1> a »so that the distillation of the solvent in the distilli *! · * setup 4l can begin. The check valve 88 prevents steam from escaping from the Des ti3.Heizeinrichtung eur pressure side of the pumps 8l and 82.

During the drying cycle, the washing drum wftrae through the success of the stripe-ready rice elements 18 suge leads » whereby "as long as substantial amounts of solvent from .de" Washed ΰζκ · Detergents are evaporated, the upper «Teaqperaturgrsnz © The thermostat 19 is reached and the lamp opens Kontintsi © 2 «lleh e« led% is «during the starting point

BAD ORSGSNAL

During the dry period, the vacuum in the washing chamber is not significantly reduced due to the high vapor pressure of the solvent, while, when the reading medium is evaporated and drained through the line 83, the vacuum gradually falls to the maximum value reduced by the pumps 81 and 82, for example below .c 711 rm (less than 28 ") mercury column and preferably less than 735 mm (less than 29 *) mercury column cutilmmto If the solvent in the laundry decreases, the efficiency is reduced as a result of solvent evaporation until finally thermal conditions are reached at which the Thermostat is no longer cooled by solvent evaporation to the lower rate, to which it is set for feeding the rice element strips sur actuation of the switch 123, which also al s dry flask holder can be referred to as 1st. The switch 123 is usually set * so that it closes at a vacuum that is slightly lower than the "highest possible vacuum" that can be achieved with the vacuum pumping system. The Betätig »mg of the switch 123 is therefore made only" after substantially represents all Lösungsaitteldaiipf from the Wasehk & lways 11 has been removed ·

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8AD ORIGINAL

When closing the switch «s 123» ZeB. on reaching A vacuum of 711 mm (28 *) of mercury in the Wasshkaramer 11 will start the sequencer motor 121 set and the solenoid valve 91 opened »what the Fol.?e has that in the Kaschksmmar a regulated air flow is initiated. The "entering through cas valve 91"

Air displaces the solvent vapor in the laundry room is in love »so that the last traces of solvent vapor can be removed by suction using the pumping system.

Furthermore, that during the trek period, use of hintereifiüfäd & rgeschalteten Puspen jauch advantageous FTIR the Lösungssi, ^ "is recovery! To mention * ο The pump 82 removes all liquid solvent from the pump · Bl and the line BH and residual Lösungemittel is in the pump 82 deposited "When switching off, the solenoid valve 92 is closed and the solvent remaining in the pump 82 is kept in this bit sum of the next drying cycle" with the pump 81 for the initial suction of the washing chamber * being used alone * In this way even the smallest loss of solvent is medium Avoided from the vacuum pump itself »if greetings» · amounts of air «are discharged from the system.

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As far as the solution recovery device is concerned, solvent is distilled from the distillation device 41 during the dry cycle and condensed in the container 31, whereby the compartment 3 * S fills and the moisture entrained overflows into the compartment 35. Uncondensed solvent vapor is susceptible to the air that is carried along with it Line 62 to the recovery chamber, in which the Ktihlrohrsehlangen 64 together with the baffle arrangement cause an essentially complete condensation of all solvent vapors. The valve 63, which is set so that @s opens at a slightly upper atmospheric pressure, allows the air to escape at about 0.21 kg / cm ² atm the steam speed in the chamber 61 is less than about 15 linear meters per Miruris (50 linear feet / minute), little or no liquid droplets escape with the air. FeispltLsweiss can be grazed with a dry cleaning mass _B bail ier 49.3 Ltr (13 Qallons) Valelene solvent with a nominal value of 9.00 US dollars per 3 T9 Ltr or (per balloon), the solution · - medium loss using of the described "Nasohin" can be kept less than 25 cents per filling of the washing.

The condensed solvent is removed from the recovery

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kamear 61 continuously to iarnmer 35 over the lines 71 and 51 supplied, after swearing in the dry cycle the last traces of solvent and water evaporate Steam from the detaching unit 41 around the cold one Forming fluid reserve in the abbey] 35 «u, which in the first stage of the subsequent cycle is used, whereupon the valve 43 for * switching off the hot water supply the coils 42 closes.

Finally, the operation de? Purpen 81 and 82 turned off and the solenoid valve 91 used to apply the vacuum su Irechen before the front door of the wash chamber is opened will.

This means that the dry cleaning machine described above is suitable for the recovery of maximum quantities of iron expensive oil cleaning agents, whereby all conditions for ice filling bubbles and / or liquid blocking in the steam and liquid cooling lines are satisfactory Could affect the operation of the machine. The condensation of the evaporation from the vapor from a solution recovery system. KamuBr is particularly advantageous in this case, inter alia the passage of chilled »tnSgiieherweise frozeni)

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BAD OBiGJWAL

Solvents avoided through narrow pipes or openings will «The use of a double! pump system to generate a vacuum and to avoid loss of solvent by blowing fumes into the air »is particularly beneficial in reducing solvent losses The simplicity makes it a minimum of operation and the ease of regulating the The machine is completely drained of the required hot and cold water especially for operating coins with the least possible attention suitable on the part of the operator

The invention is of course not limited to the illustrated and Embodiment described is limited, but can be within experience various changes to its framework.

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Claims (1)

February 25, 1966 JE. JL "c.JbLjg ... Ji 1. T-shirt cleaning machine, characterized by a
Storage tank, which contains the cleaning solvent * a wash channel, which is connected to the storage tank. · Through a pipe and a valve
stands that is closed ui d by a vacuum in the
Washing chamber can be operated, a washing drum with * a perforated wall, which inside the washing chamber; is rotatably mounted, a drive by which the
Washing drum with a selected speed eur speed
can be driven, an electric heating element ;, · (j 'daa is disposed on the Uaeehtromrael "a current source
to excite the circle element * under the rule «Inas · -> Thermostats _ψ which alternate stimulus ·· and cooling periods, generated »and the temperature in the Waeehkaomer Ewleohevi, to hold certain gardens, a Deetllliereinrichtune, · I _x wel ^ ha with the Waschkitmer in connection and one '■. i Has an outlet for evaporated solvent, a probe « _; sieve device for refeeding conduction of condensate Leiungi · ..-, medium »daa from der? tillitreinr power» «in stock · - -25 * container L3t been vaporized, which reservoir has a steam outlet, ler old a steam recovery chamber in conjunction represents "which is provided in the Aussenluffc with a cooling device and a AustrittsSffnung _a means for returning liquid solvent from the Rückgevinmmgskaromer to betray container and a Ifkuunpumpanlage for extracting the Wasehkaimserv «oak pumping system is used to * convey solvent vapor from the washkaaaser to the distillation facility«, 2 »Machine according to claim 1, characterized in that, a pipe connection provided with a valve between the mixing chamber and 4-way distillation unit for pressure equalization The system provides 3 * Machine according to claim 1 _6, characterized in that a pipe connection provided with a valve is provided between the storage chamber and the distillation unit. Machine meh claim I _9, characterized in that the 209810/0391 -26. . , ßä ORiGiNAL 1610839 Vskuumpumpanlage consists of Poppelvakuumptupen in series connection _o ο Machine according to claim 1, characterized in that the recovery chamber baffles to form a contains sinusoidal gas flow path. 6c drying machine according to claim 1, characterized in that the v & kuafflgrawpanlage comprises a pump with an inlet chamber, an outlet and a housing with inner oil-coated pistons for sucking oases into the inlet chamber and displacing this oasis through the outlet port Opening to one; desired oil level in this _{B has} an oil container, which is arranged to take up excess oil from the housing by the fall effect and a first pipe connection to the mentioned opening and a second pipe connection to a ulsufuhrkaanar b <3 ~, which latter a pipe connection with the The mentioned housing has _4, whereby a valve is provided in the pipe connection between the oil clock chamber and the housing to prevent a gas flow from the housing, sur _ _a7 _ 209810 / 6391- to prevent sufuhrkanaer, ORl _QlNfiL * ^'28 ~ 209810/0381 Blank page