DE1451072A1 - Refrigerator compartment - Google Patents

Description

Dual Jet Refrigation Company, Chicago, Illinois, USA

"Cooling compartment

The invention relates to an improved invention Cooling compartment with access to an enclosed refrigerated one Pick open side. In particular, the door directions in which a cooling Stand within the refrigerated area can, although an opening is provided as access to the content,

Aaoh there is a tendency to experience the applicant Srttr icing in general in the area of the outlet nozzles, especially in the ducts surrounding the innermost cooling streams. This interrupts the normal flow of the air · »curtain, and reduces the difficulty of a constant temperature control are increasing » In addition, the tendency to form deposits in the nozzles makes more frequent defrosting necessary, which means that the Overall performance of the refrigerator is reduced «

Bas icing problems is especially difficult, though Wabendüaen are used. You can cross sections of the small openings in the "Abenabscbnitte" Ice formation can be reduced significantly, which affects the integrity of the operation is »In addition, the

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cuts the icing formed by a larger surface and requires more frequent defrosting »

One aim of the invention is to reduce the formation of ice in the outlet points for the air curtains subdivisions

A particular object of the invention is to provide cooling compartments which are arranged close to the nozzle openings Heating means that prevent them from forming in these areas and the performance of the refrigerator thereby increase "

Further advantages, features and possible uses of the present invention emerge from the accompanying illustration of exemplary embodiments and the following description »

Ss shows:

IF ig. 1, a refrigerator compartment of the invention of the exact Side, with parts broken away,

Fig «, 2. the nozzle system of a cooling compartment in partial section with associated heating means and

3 shows the heating means used in the area of the nozzles in plan view,

/ ie said, the invention relates to cooling compartments which are in one. '. and one that forms the access to the cold room Have opening »The cold rooms are with a plurality Over one edge of the opening of juxtaposed nozzles and over an opposite edge

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the opening provided corresponding IDin flow openings. The inner nozzles and inflow openings serve the passage of cooled air streams _p flowing through the cooling chamber opening while increasingly warmer layers of air flow through the outer nozzles and inflow openings »The cooled streams flow through pipes with cooling coils or the like, and one or more of the outer streams can also be cooled ·

The problem of undesired ice formation and accumulation occurs in particular in the innermost cooling stream or the innermost cooling streams, and it appears that it collects with greater regularity in the area of the outlet nozzles of these cooled streams the trajectory of the cooled streams near the area of the nozzles is effectively reduced. The cooled streams contact the heating means before contacting the cooling nozzles. These heating means have a relatively small capacity and serve to increase the temperature of the stream in the area of the nozzles by a small amount, thereby avoiding the formation of ice C, so arranged near the nozzle for this current heating means may be set so as to raise the temperature to about -26 ⁰ C. this temperature rise is not particularly critical, since, even a difference of 0.5 or 1 degree than in Has proven effective to some extent · However, the temperature is around

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increased a relatively large amount »see above the cooling coils are excessively stressed} therefore these useful limit values were chosen for the temperature difference

In a preferred embodiment of the

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tion, the heating means have a frame that extends directly through the cooled gate to the nozzles Air duct extends "I am electrical", resistance wire is, among other things, the frame wrapped, with the individual '.' / indungen sufficiently far from each other removed to prevent excessive narrowing of the air flow. As I said, »is that The principle of the invention can be used in particular where V> sections are provided as nozzles. Using In connection with these sections, the heating means described generate sufficient heat, over the 'temperature of the innermost cooled To increase the air layer or the innermost cooled air layers and thereby ice formation on the exposed surfaces of the tVabenabechnitt impede·

The accompanying drawings show a refrigerated room 10 according to the invention with an upper one Wall 12, a lower wall K, a rear wall 16, a front wall 18 and side walls 20. The front . '.' and 18 contains an opening 22 which provides access to the cooled room 24 grants "An inner wall 26 delimits the cold room"

Between c / eg and 30 and the inner and the outer Wall form the channels 52, 34 and 36. These channels

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limit the currents 38, 40 and 42 that will result flow over the cooling chamber opening as thin layers «

In the bottom of the cooling chamber arranged channels Not shown cooling coils and Umwälzmittel arranged. At least the inner air layer 38 must be cooled, although for the other layers as well Coolant can be provided. The idea of the invention provides two or more layers of air; the invention is not necessarily limited to the three depicted layers are limited. Uawälzmlttel are for the innermost layer of air and preferably for all layers of air provided, although in some cases the outermost layer is without any special one mechanical aid can be brought into disarray *

In the path of the outer layers 40 and 42 are Filters 44 are provided, including the ingress of insects and other foreign bodies into the air ducts SU prevent »Kin-like filter can over the Channel 32 be arranged

Outlet nozzles 48 for the air streams are in the upper one Edge of the refrigerator opening; 8 provided, as I said, consists an increase in ice formation in this area, especially in the innermost cooled channel 32 <, Es was found to be effective in the accumulation of ice can be reduced if heating means 50 are provided in the air duct near the nozzle 48 · These Heating means are arranged so that the stream touches them before passing the nozzle. Although

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yO are only suitable in deal channel 32, It will be evident that the idea of the invention Applicable to all areas of application, where undesirable Blsbiliung Difficulties gently "

The heating means 50 shown have a frame 52, the door to. de »Can the air duct be hung and fastened to the side walls of the Sea cold room using the fastening clamps 34? Struts 56 are provided to stiffen the membrane.

An electrical resistance wire 58 is in one Multiple tone windings wrapped around the fiahmen ^ It can be a wire of any conventional type; a thin one is preferable, however, and the individual win « fertilizers are preferably smooth in groasen compared to the bead of the wire Distances apart. This arrangement serves for uniform heat distribution without the flow of the air layers in undesirable t / ice is interrupted · Its suitable construction consists of thin, with plastic covered, with Distances of about 2 »54 om between each Wire wrapped around a steel frame, but many variations are possible for the faohmann obvious.

The use of heating means 50 in the nozzle area is particularly effective in honeycomb sections having nozzles 48 the one shown. Kind, combining the narrow channels in these sections with the large surface area increases the icing

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problem. Ea was found to be the use Sound home means of the kind described a noticeable Increase in performance and profitability of the cooling rooms sur result.

A further obligation consists in the congestion caused by the temperature fluctuations in the air flow as a result of the action of the de-tapping valves seen in the system. Touched honeycomb surfaces above are increasing the ^<x eaperatur dee KaltluftBtroaes, eo 0.5 to 1.7 ⁰ C colder than the Luftetroa. This accelerates ^ ia general, the formation of ice on the colder surfaces · The presence τοπ HeiJtaitteln the invention geaäae close to the cold surfaces, the effect of eaperatur ^ »fluctuations is reduced to a Miniaua is -veraieden whereby ice formation.

For the professional, Sahrawi modifications are understood the la one of its illustrated and described exemplary embodiments

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Claims (1)

Η51072 Claims Fridge with an opening in a band through which the otherwise enclosed cold room with the Auaeenatmosphäre communicates, at least one inner Kaitlufteiniaas and at least one outer inlet for warmer air, at least one inner cold air nozzle and at least one outer nozzle for warmer air, with the Einigsee and jets side by side over opposite edges of the Cooling space opening are arranged and in each case corresponding inlets and nozzles through channels with one another are connected, with circulation means provided in at least some of the channels Drive air through the ducts in the form of shafts over the cooling chamber opening su, furthermore bit -.- . arranged in at least some of the channels Coolants that are designed to cool at least the innermost layer of air are indicates that heating means in the channels delimiting the innermost carbonized layers are close by the nozzles for these channels are provided and designed in such a way that they generate heat and thereby di Increase the temperature of the inner layer, which prevents ice formation 2 «cooling room according to claim 1, characterized in that the means are immediately in front of the dunes 3. Cooling room according to claims 1 and 2, characterized in that that the ice cream has a fiahmen, suspended in the channels close to the nozzles and extending across the channels, as well as one 90981 1/0618 BAD ORJGiNAL α «the ifahnien ^? ibcr »a long length of disgusted electric laughter 4 "JCf} hlraus according to the Ane> r ^{? 1} to 3" is rewarded by the fact that β loh "extends each of the oils in honeycomb and forms the outlets for the air and that the heating means are unaffected. tmr Tor de «H'aboo & bnohnltt In des Kanal fUr dl · Inner« t · LttXtechioht are arranged, 909811/0618 BAD ORIQINAU