DE2855115A1 - AIR CIRCULATED REFRIGERATOR - Google Patents

Description

265b 1 15 - χ-

The invention relates generally to the production of refrigerators and particularly, as indicated in the title, on air circulation refrigerators, which preferred, but "maybe are intended exclusively for household and estaltungs- advantageously in their design, ^G and assembly features the following Arrangements to be improved:

a) The special design of the inner chamber.

b) The division of the cooling zone into two isothermal compartments, of which the upper l * aum the freezer and the

lower room form the cooling zone.

c) The demarcation of the two compartments by an insulating separating element with special features, through which a

upper duct for circulating the air flow in the freezer and a lower duct for air circulation in the lower one Refrigerator to be formed «

d) The special design of the freezer, which is arranged separately from the evaporator, which is undesirable te formation of ice on the walls of the freezer is avoided.

e) The special arrangement of an electric fan, which circulates the air flow inside the freezer and the cooling zone is accelerated and its flow is directed independently to the individual rooms after the evaporator left to cool the air mass.

These and other features of the subject matter of the invention are described earlier.

Design of the inner chamber «- The refrigerators for the household are usually built into a piece of furniture in which a metal chamber is arranged, the outside of which is protected by an enamel cladding. The production of this type of chamber is complicated and expensive, as it is composed of different parts that have to be welded together and provided with an enamel cladding on the outer walls »

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In this invention, the chamber becomes more advantageous Way made of a metal plate or some other material of suitable thickness, which before the Processing is painted and consists of three parts, the side walls, the canister base and also the lower one Form part that has a conventional gradation and forms a suitable space at the rear of the chamber, which is intended for the installation of the motor compressor unit is.

The aforementioned pre-formed metal plates are connected to one another at the edge by flanging. This connection can be made in any suitable manner, for example by providing the plate forming the camera base with extensions or lengthening protrusions which bend slightly along the edges. Each of these extensions is received between the mutually parallel wings or double projections on the rear edge of the plates, which form the side walls of the chamber and whose double wings are bent at right angles from the respective side walls ₀

In another advantageous embodiment of the above Chamber becomes a connection between the chamber floor and the chamber walls at their rear edges continuous, slightly out of light, longitudinal expansion provided, which between the wings of a ^ oppelvorstosses rests and snaps into place and at 90S to the rear Part of the floor is bent.

Thus designed K _a mmer forms an upwardly open space and forms the Kühiabteil which to space the evaporator ranged from the lower part of the chamber For installation of this K _a mmerteiles "in the Kuhlschrankgehäuse was on ^u ehäuserahmen, namely to the vertical walls , a double ^ aterxal deviation with the formation of longitudinal protrusions which protrude freely and are elastic, is provided, wherein the longitudinal beams, which form the web of the frame, are received between these protrusions and the rear of the frame.

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The lower part of the chamber described is completely open at the top. The freezer, which consists of a second upper chamber with special features, is arranged on this. The second chamber may be produced as the bottom by the method of Metallplattenverklammerung, or also of _a nderen M teriales by a conventional ^v experi ren be designed.

The top K _a mmerkörper is oppositely placed to the upper HChange of the lower body. Both bodies are held together in a suitable way, for example by tapes that are stuck on the outside of the chambers on the line between the two.

N _e such an arrangement, both chambers they are covered together with an insulating layer of rigid Polyurthanschautn, for which purpose both the body after B_e signed adjustment in einejgeeignete shape, which also receives the housing, which serves as a general shell of the refrigerator is set. This housing consists in an advantageous manner of the side walls and the roof made of metal plates and is open at the bottom and back _o

When inserting the K thus formed _on mer and the "ehäuses into the mold, both jointly form a totally enclosed space, except at the front side, bleibte which open into the sen space the plastic material is injected, which forms by the hardening of the heat-insulating lining element.

The bottom and the back are prefabricated with a light plate, e.g. covered with a thin cardboard, which serves as insulation against steam. The connection between the insulation cladding and the chamber this ensures that the injected material adheres firmly to the outside of the chamber, with however, this firm connection is reinforced by the advances at the corners of the chamber, which occur during hardening the cladding to be enclosed in the material of the same "

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By the arrangements described above, the connecting lines between the floor and the side walls the chamber sealed in an excellent manner. The peculiar deformation of the plates for mutual connection by "declaration actually serves as a limit for the filling of the insulating compound, whereby no other seal gel system is required, which would be cumbersome and expensive.

The arrangements explained give an isothermal space which is formed by the upper chamber, which forms the freezer compartment, and by the lower chamber of the refrigerator compartment. Öeide _{the chambers} K _s ind separated by a special Isolierzwischenwand from each other, which is _a mmer suspended between the side walls of K can be prepared for which purpose at least at the side walls and possibly also on the rear wall different channels "

Isolierzwischenwand .- This wall serves to establish a separation between the upper space, which the freezer, and the lower space, which forms the cooling zone.

This partition is advantageously made of expandable

the purpose for which it is diertem polystyrene produced by a corresponding erformungsverfahren and hooked between the ertikalwänden the chamber introduced into the specially trained ^lv Anaele of K _to uner and retained by a slight pressure in a suitable manner "Both chambers are connected with a cooling system consisting of a motor compressor unit, a condenser, a damper and a capillary tube as an expansion element.

The evaporator is attached to the bottom of the upper chamber and lies above a sheet metal water collecting channel, which adapts to the shape of the insulating partition.

Top cover of the partition - This partition wall has s_o well on its upper side, nterseite as well as on the ^u, suitable projections, V _he depressions and passages to be thus so adapted to each case on the upper and on the lower level a cover and kept The top cover forms the lower level of the freezer compartment.

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wall arranged remotely to create a free space between the cover and the wall through which the Airflow flows away, which in the freezer from the electric fan to flow through the freezer compartment and to penetrate through suitable passages in the cover, which after covers the intermediate wall at the top, is driven. The air driven in this way flows to the evaporator and penetrates its wing wall to cool off and after the loss of temperature return to the freezer. This process runs continuously with the predetermined breaks, which are controlled by the control devices of the refrigerator.

Lower cover of the partition . - The aforementioned insulating partition, which delimits the freezer compartment and the refrigerator compartment, receives a cover on its underside similar to that on the top, which is provided with passages Space to allow the passage of the air flow which, driven by the electric fan, circulates inside the refrigerator compartment. This air flow is directed to the evaporator and after cooling through contact with the plates or vanes of the evaporator is reclaimed to the refrigerator compartment from which it was originally came.

As in the case of the freezer, the airflow of the cooling compartment also flows in a continuous cycle with those programmed in advance Interruptions, which the requirements in each case be adjusted.

The Isolierzwischenwand and the plates, which they cover upwardly and downwardly, form a unit which is attached by simple Einrastung inside the K _a mmer "

Evaporator separator .- The bottom of the ^U consists of a efrierfaches ^s cover plate which accommodates the evaporator covered and an electric blower, which is driven by the flow of air in the freezer and the refrigerator compartment. To cool down, this air mass flows through the wing wall of the evaporation ^,

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cooling snake. - ο -

The so arranged electric fan is covered with a part, which if possible has rejection passages through which the air coming from the evaporator into the upper Freezer penetrates. Optionally, there are different shapes inside the freezer for a better one and to achieve more appropriate air circulation.

Part of the wftstronies flowing through the evaporator is through a passage between the isolating separator and the lower cover resting on the underside of the mentioned separator is fed into the lower cooling chamber, this passage ends in a deflection element which ver the air flow driven by the electric fan shared

Control housing, - the separation unit described, which consists of a Isoliervrand and from the upper and lower covers, includes on its underside which forms the roof of the cooling compartment, a housing for receiving the different ^u eleuchtungs- and control elements of the system.

Provides a more complete idea of the subject matter of the invention the following description, in which the attached Drawings will be explained which are by way of example only, without limitation those preferred by the invention Represent elements and are related to a practical embodiment.

Show it:

Be 1 shows a perspective consisting of two interconnected bodies K _a mmer whose body is made of plates possible, which erklammerungsverfahren by a suitable ^ interconnected _e This chamber generally forms the refrigerator, which is subdivided into two compartments, one of which the lower one represents the actual cooling compartment of the refrigerator and the one above the freezer compartment.

Figures 2 and 3 represent two possible on a larger scale Design details of the chamber after the

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bracketing procedure

Figure 4 shows an elevation in section through a vertical

Level the chamber of a refrigerator made according to the standards proposed by the invention became.

Figure 5 corresponds to a detail of the improved frame,

which surrounds the entrance door to the interior of the refrigerator compartment. '

FIG. 6 shows the unit in plan and in vertical section the insulating partition.

Figure 7 shows a view similar to Figure 4, which

increased in section through a vertical plane shows the same unit after installing the following parts:

- the insulating partition that separates the freezer from the cooling compartment separates,

- the sheet that closes the access to the freezer,

- the sheet that closes the access to the lower cooling compartment,

Figure 8 corresponds to a front view of the freezer compartment,

in which the bottom after the arrangement of a channel, which is down to the intended shape in the insulating partition adjusts, the evaporator is installed. From this figure the arrangement of two shapes can be seen, which are used for better circulation of the air driven by the electric fan · These shapes are still used as a support for the plate carried by the fan, which forms the bottom of the roaster "

Figure 9 shows in perspective the water reservoir described

trap channel on which the evaporator is located. - "

FIG. 10 shows an enlarged detail which somewhat schematically shows the lower part of the water collecting channel represents which adapts to the insulating partition.

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Figure 11 illustrates in the PERSPECTIVE represents the erdampfer severing cover which simultaneously forms the bottom of the ^U efrierabteils and having at the top a suitable recess is incorporated in which the electric fan to accelerate the air circulation in the two compartments of the refrigerator.

Figure 12 is a front view showing the G f _{e r} i _he f _ac h

after installation of the base plate, which covers the evaporation cooling coil, shows. .

FIG. 13 shows a view similar to FIG. 11, which represents the freezer compartment, on the bottom of which the housing covering the ventilator was attached { this housing has, if possible, deflection passages through which part of the air flow coming from the evaporator into the interior of the roaster and the other part of the stream into the cooling compartment.

Figure 14 shows a somewhat schematic view of the upper Part of the refrigerator compartment with an entrance on the ceiling for the air coming out of the evaporator and a housing to accommodate the various lighting and control elements.

FIG. 15 shows the interior in a plan view and a front view

a refrigerator, which was designed according to the standards proposed by the invention.

Figure l6 shows in side view and in a vertical section

the designed refrigerator and, in a somewhat schematic way, the circulation of the air flow the respective upper and lower compartments for the freezer compartment and the refrigerator compartment.

When explaining the drawings, it is now pointed out that the number -1- generally denotes the entire refrigerator, which consists of two bodies that are placed one on top of the other. The upper body -2- ^ delimits the freezer -3-, and the lower body -k- forms the cooling compartment -5- · The two superimposed bodies -2- and -k are connected to one another in a suitable manner, their contact line being through ^ modification elements -6- is sealed.

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- Yes "
The lower body -4- of the chamber -1- consists, as already mentioned, of three preformed plates -7 ~ »-8-, ~ 9-» of which the first two are the side walls and the third -9 "the base of the Form chamber.

In the embodiment shown in Figure 3, the side plates ~ 7- and -8- have an extension at their rear normal edge that first bends outward at an angle of 90 ^a and is then rotated by 180 °, whereby two parallel advances - 10- and -11-, this something that arise wider, between which the matching R _a nd -12- of the base of the chamber forming plate -9- liegte ach such an arrangement of the side panels 7-8 and the plate -9- " their grouped edges are bracketed using conventional means. The result is the lower body -4- of the chamber, which at its rear corners and at the corners of the lower part, which is designed in a stepped manner, has freely protruding projections -13- which extend outwards from the chamber.

In the embodiment shown in Figure 2 is shown as a variant that the edges of the plate -9- a first, right-angled have bent extension -14-, which is then rotated 180ö and forms the advance -15-. Between the two advances -14- and -15- becomes the slightly out of alignment rear edge -12a- of the corresponding side part introduced, which in the case of this illustration is marked with the number 7, whereby the advances in the shape already described are connected to one another.

In the FIGS. 2 and 3 described and illustrated Embodiments can be seen the free-standing ribs -I3-1 which extend to the outside of the chamber and follow their corner line.

As already known, the chamber -1- consists of two bodies -2- and -4. The entire chamber is covered with an insulating layer -16-, for which purpose it is placed in the interior of a suitable form, which receives -17-and the housing when ^u ehäuse for the entire refrigerator is

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and advantageously from two side walls and one Ceiling is made of metal plates and remains open downwards and backwards, these open sides with a thin prefabricated lightweight panel -18-, e.g. cardboard, covered will"

When inserting the chamber -1- and the housing -17- into the mentioned form, the chamber becomes complete between the two surrounding free space created., except at the open Front side, in which a plastic material is injected which, when solidified, forms the heat-insulating cladding -l6- forms.

The perfect connection between the plastic cladding -l6- and the chamber -1- is guaranteed, that the injected plastic material adheres firmly to the outside of the chamber due to its nature, this fixed connection, however, is reinforced by the corner projections -13- which extend into the outside of the chamber and become trapped in the plastic material when it hardens «

By the arrangements described above, to obtain a proper sealing of the connection line between the base and the sides of ^K ammer. Due to the peculiar deformation of the plate at the edges according to FIGS. 2 and 3, these serve as a limit for the filling of the insulation compound, without the need for a further sealing system, which would be laborious and expensive. "

With reference to Figure 5, it can be said that in this figure the section of one side of the frame of the access door to the refrigerator compartment can be seen, this frame being created by folding the sheet metal which forms the housing -17- and a double fold - having 19- "of the material, first inwardly and then to the side to extend in the connection in a freely projecting Vorstpss -20-, the gene in an elastic B _O -21- ends. between the fixed -19- and elastic .-20- and -21- sections, a space -22- is formed in which the edge of a special frame -23- is located, which has a freely protruding,

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has elastic advance -23a-. This frame covers the seal between the housing and the inner chamber and by engaging the protrusion -23a- of the frame with the elastic arch -21- of the housing -17- in held his position

After formation of the entire body of the Kühlschranlcens by coating the K _a Nimer -1-, this is divided into two compartments. The upper -3- forms the freezer compartment, the lower -5- the actual refrigerator compartment, whereby both rooms are delimited by an insulating partition -24- which has special features and is hung between the chamber walls, for which it is placed in the K with slight pressure _a nal is -25- thereof, introduced to the inner walls of the K _a mmer -1-, for example in the upper body -2-. This detail can be seen from FIGS. 1 and 4.

The insulating intermediate element consists of a shaped wall -24-, advantageously made of expanded polyurethane, and has on both sides certain projections and depressions in a manner known per se, in order to create an upper one on this wall Cover -26- and a base plate -27- to be attached to the lower side. Between this - ^ latte -26- and the upper one At the level of the wall -24- a room -28- is created through which the air mass circulating in the freezer -3- penetrates this and is led to the evaporator -34-, where it is cooled, to flow back into the freezer compartment -3-.

It goes without saying that the top cover -26- of the wall -24- forms the bottom of the freezer and one or more strategically has distributed holes through which the air flow penetrates into the space -28-.

A similar effect is achieved in the space -29- between the lower level of the wall -24- and the lower plate -27-; which forms the ceiling of the refrigerator compartment -5-. In this case, the air circulating in zone -5- penetrates into space -29-: through the passages provided in this lower plate -27- in order to flow to the evaporator -34- and then properly cooled down return to the refrigerator compartment -5-.

The lower level of the "freezer compartment -3- has an opening

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nung_-30-, through which a connection between the, compartment -5- and the one that houses the vaporizer, barely -33- manufactured so that part of the coming out of the steamer Air enters the refrigerator compartment -5-.

In the execution of the intermediate wall -24- shown in Figure 6, it can be seen that this wall in the vicinity of its rear Edge has a recess -31- which the drainage line extended from the bottom of the water-collecting element -32- receives -33-ι where the element -32- in the rear part of the upper body -2- of the chamber -1- exactly is arranged under the evaporator -34- so that the defrosting water flows through during the predetermined defrosting cycles the water collecting tray -32- and the pipe -33- to one suitable position is directed from where it is led to the outside for elimination. This arrangement can e.g., that shown in Figure 16, in which the Emptying passage -31- is shown through which the water runs into a collecting basin -35 »which directs it to the outside.

As already indicated, a vertically cut refrigerator appears in FIG. 7, the interior of which is divided into two Compartments -3- and -5- were divided by inserting a partition -24-} the doors to the two compartments are closed independently of each other; The access to the freezer is with the sheet -36-, that to the refrigerator compartment with the Sheet -37- closed «

The upper body -2- of the chamber -1- has a wing evaporator -34- at the bottom, as shown in FIG. This evaporator is covered at the front by a plate -35- (Figure 11), which is in a vertical position on the cover -26- is supported and fastened in a suitable manner. The plate -26- covers the partition -24-, The plates -35- in a vertical position and -26- in a horizontal position Limit the position of the freezer -3- according to the representations in Figures 12 and 13 ·

The vertical plate covering the wing evaporator -34- frontally -35- has a wide hole -36- in which the electric fan -37- is located, which the Air circulation within the freezer -3- and between it

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and the Flugelverdanipf he -34- accelerates j on the other hand this fan also fulfills the same task for the refrigerator compartment -5-,

In the figure. 12 the upper part of the refrigerator is shown in a front view. M _a ti sees the freezer -3-, the bottom of which is formed by the plate -35-, which covers the evaporator -34- and carries the fan -37-. At the upper corners of this room there are two shapes -38- and -39- »which ensure better air circulation within the room and at the same time serve as a support for the vertical plate -35-.

A special ^u ehäuse -40- located at the frontal blatte -35-1 which forms the bottom of the freezer to, the housing -40- to cover the entilator -37- and has at the sides via passages -4l-, the possible are equipped with deflector blades, and which the air driven by the fan -37 in the desired! Circulate the direction inside the freezer -3-.

A portion of the air flow coming from the evaporator passes through the ^u effnung -30- in the plate -26- which forms the base of the freezer -3-, and is directed into the cooling compartment -5- to which eK through the passages - 43-in the housing -42- penetrates.

The refrigerator designed in the manner described is shown in a front view in FIG it is shown without the doors of the freezer -3- and the cooling zone -5-. In this picture you can see the case -40- with the passages -4l- through which some of the air coming from the evaporator enters the freezer -3- and another amount of air penetrates into the refrigerator compartment -5-.

On the lower side of this ^u eh "uses -40- there is a pre-arrangement to control the air flow that has to enter the respective room -3- and -5-. This device mainly consists of a line -45- between the vertical ones Partition walls, on which an air passage valve -44- is arranged, with which the air flow into the spaces -3- and -5 "is controlled

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Air exiting the evaporator is blown by a fan -37- driven and penetrates the lines -45- for distribution on the mentioned compartments.

The mentioned valve -44- is located on the upper part of the

-45- Zeitung "in which it can be rotated via a control -46- which is arranged frontally to the casing -40-" In a preferred ^il usführungsforni of the invention is this ^ alve -44- of a disc-shaped member having an axis of rotation in which the control -46- is inserted, which has a transverse partition on the underside.

It goes without saying that the entil via the control -46-so can be set that it enabled the flow of a larger or smaller amount of air to the Ivühlabteil -5-

The operation of the entire system can be seen from FIG. The direction of air circulation in the freezer 3 - and in the Refrigerator compartment -5- is indicated by arrows.

The partition wall -24- delimiting rooms 3 and 5 has via conventional ducts for the electrical lines that connect the various refrigeration units with control elements and control devices for the entire system. The electrical lines meet at the bottom the partition -24- in an accessible housing -47-0

This special arrangement If all control, Jü _e _ grouped leuchtungs and adjustment within this accessible housing -47- rates, for installation and revision pUsserst is facilitated "

This advantageous arrangement avoids entirely the arrangement of the electrical ^ pus within the K _a mmer and their inclusion of the protective insulating layer in the walls.

In the preceding paragraphs, the invention has been described on ^a and a possible practical embodiment in which a refrigerator is shown in which the freezer in the upper part and the refrigerator compartment in the lower part

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arranged.

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^{1 / δ} ~ 2 6 b S 1 1 5

It should be noted, however, that this embodiment is in no way restrictive, because the refrigerator can also be designed so that the freezer is at the bottom and the cooling compartment is at the top, in which case the insulating partition is on both the top and the top may have on the lower side, or on both the particular to accommodate the various control elements chassis It "will also be understood that the evaporation element is provided at the bottom of the freezer in this second embodiment described, which at the lower part of _s in this case, the G ^ uses would be located.

After the appropriate description of the characteristics and the Design of the completed refrigerator to which this invention relates is made for given purposes pointed out that all changes are possible as long as the basic idea of the object described is not thereby is changed.

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Claims (1)

A NSPRESSIONS 1-. Completed refrigerator with air circulation, characterized in that the general compartment (1) that forms the space of the refrigerator is formed by two independent bodies, the upper (2) and the lower (4), connected by a simple snap be, wherein the connecting line is concealed between the two by a band or tape (6) and is formed as the aforementioned chamber, at the outside, the advantageously i / else metallic ^u eh "use is arranged (17), the eitenwänden only two degrees and the upper housing wall, and in that between the Renner (1) and the ^u eh _a nozzle (17) hardly remains, to a plastic material (l6), preferably a rigid polyurethane foam _/ assumes that forms the heat-insulating erkleidung the chamber and at the hardening of the K _a mmer and ^u etallgehgUses (17) in a compact block, the two bodies (2 and 4), the outside is covered with a fine offset film (l8). 2. Completed refrigerator with air circulation, according to 1. · Claim _f, characterized in that at least the lower body (4) of the chamber (1) consists of three plates which form the side walls (7-8) and the base (9) and are connected to one another at the vertical edges by clips in the form of protrusions (13) which extend from the outside of the chamber corners to the inside of the insulating plastic compound (16) surrounding the chamber. 3 »Completed refrigerator with air circulation, according to the preceding claims _/ characterized in that the shaped chamber (1) has _a channel (25) on the inside, which extends onto the side walls (7-8) and, if possible, onto the background (9) falls, in which tightly an insulating wall (24) is fitted, which divides the interior of the chamber into two compartments, the upper one, which forms the freezer (3) and the lower one, which serves as a cooling compartment (5) or vice versa S09829 / 0600 ORIGINAL INSPECTED 2856115 4, of completed refrigerator with air circulation, in accordance with the 3 · Anspruchydadurch that the partition wall (24) orsprüngen from a heat insulating plate having ^ and comprises recesses on both sides and at the top by a cover (26) having conventional through bores the lower ^b bene of the upper space (3), is covered, a second plate (27) with through-holes being provided under the intermediate wall (24), which plate forms the dock of the lower space (5). 5 Completed refrigerator with air circulation, according to claim 4, characterized in that between the perforated plates (26 and 27) and the wall (24) K _a m- mern are formed, (28 and 29), through which the air flow in both rooms (3 and 5) in seal with the evaporator (34) moved to cool. $ e of completed refrigerator with air circulation, according to claims 3i 4 and 5, characterized in that the freezer (3) and the refrigerating compartment (5) delimiting wall (24) comprises conventional lines, in which the electrical ^L facilities for feeding and Connection of the various electrical apparatus and devices that supply and control the entire system of the refrigerator. These lines come together at the bottom and / or top of said wall (24) and are housed in an accessible general housing (47). 7 · of completed refrigerator with air circulation, according to "the 5 · Claim _f characterized in that it has a wing evaporator (34) of the K _a Nimer (1) is arranged at the bottom of the body (2), and frontally by a plate (35 ) is covered in the vertical position, which forms the bottom of the freezer compartment (3) and "has a wide bore (36) in which the electric fan (37) is installed, which circulates the air flow in the freezer (3) and the refrigerator compartment (5) and between these drives the evaporator. 909829/0600 8 »Do complete refrigerator with air circulation, according to the 7 · claimj characterized in that on the plate (35) a "housing (4θ) with lateral passages (4l) is located, which covers the ventilator (37) and a part of it through its lateral passages of the cooled air flow coming from the evaporator flows into the freezer. 9 · of completed refrigerator with air circulation, according to the 8 »claim characterized gcgennaeichnet that the fan covering ^u eh" use (4θ) vertical to the rear wall, two partition walls has, between which is formed a vertical ^ Zeitung (^ 5) the partition (24) is traversed by a passage (30) through which part of the cooled air flow from the evaporator penetrates into the cooling space (5) _o 1oo of completed refrigerator with air circulation, according to the 9 × ^rt nspruch _/ characterized in that the ^ Zeitung (45), through which a part of the air stream passes from the evaporator (34) into the cooling chamber (5), a manually operated H _a hn (46) which is actuated from the exterior of the housing (40) and the cooled air amount urn in the R "(3 and 5) of _a K mmer (l) has to penetrate controlled. 11, Completed refrigerator with air circulation, according to 7 · claim _f, characterized in that the wing evaporator (34) is arranged on a collecting tray (32) which collects the water formed during defrosting and discharges it to the outside via a drain line (33) for disposal 909829/0600