WO2011124210A2

WO2011124210A2 - Mulitdeck display refrigerator and method for operating a multideck display refriderator

Info

Publication number: WO2011124210A2
Application number: PCT/DE2011/000365
Authority: WO
Inventors: Günther Hertel
Original assignee: Coolback Gmbh
Priority date: 2010-04-07
Filing date: 2011-04-06
Publication date: 2011-10-13
Also published as: WO2011124210A3; DE112011101234A5; DE112011101234B4; DE102011009901A1

Abstract

The invention relates to a multideck display refrigerator (101) comprising a heat exchanger and an air circuit. Said air circuit comprises a suction area. At least one dirt collector having a flow surface which is inclined in relation to the horizontal and the vertical is arranged on said mulitdeck display refrigerator (110) in the suction area.

Description

Cooling shelf and method for operating a refrigerated shelf

[Ol] The invention relates to a refrigerated shelf, which is intended in particular for commercial use in the food retail for example, meat, vegetables, fruits or dairy products. Commercially available refrigerated shelves, which consist of uprights, a bottom group with a channel and a suction for a cooling air circuit, a rear wall assembly, a ceiling element and shelves, naturally pollute particularly fast due to the open design and installation in a busy sales room must be cleaned regularly to comply with hygienic regulations, but also to prevent blockages in the air passages and impaired cooling performance. For this purpose, grille grills are usually attached to the intake area, which in turn already reduce coarse contamination of the channel covered by this grille for the cooling air circuit and which are arranged detachably on this channel or on the intake area in order to be able to clean the intake area and the following channel.

It is still common in commercial refrigerated shelves that emerging from the ceiling element cold air curtain is supplemented by a second air curtain, which lays directly in front of the first cold air curtain and on the one hand improves the cold insulation of the goods space and on the other supports the first cold air curtain by the formation of a cooling technically unfavorable turbulent boundary layer between the cooling curtain and room air is reduced. This Stützkaltluftschleier is generated according to the prior art on the ceiling element of the cooling rack, for example, with an additional fan from the mixture of cold air and warm room air. For this purpose, the cold air branches off from the already existing cold air flow, whereby, however, an increased power requirement of the ventilation and cooling assemblies is required.

[04] In order to provide at least one cold air curtain, outlet openings or nozzles are generally attached to the ceiling element of a cooling rack, as a result of which

CONFIRMATION COPY Cold air curtain can be influenced in its flow characteristics such that preferably a laminar cold air curtain is formed. This measure leads to an improved insulating effect of the cold air curtain with respect to the ambient air surrounding the cooling rack. These designed as a nozzle Auslasswaben, which also need to be cleaned at regular intervals, are usually mounted with maintenance or installation-consuming fasteners to the cooling rack.

[05] Furthermore, prior art refrigerated cabinets also have lockable night blinds to delimit the goods space from the environment and thus to limit the loss of cold air during the night or on Sundays and public holidays, consequently on days without public access in the sales area. However, the gain in available cooling capacity due to the additional isolation of the night blind is not adjusted by a lower, supplied by the refrigeration cycle, cooling capacity.

The object of the invention is therefore to provide a refrigerated shelf, which on the one hand has lower energy consumption and increased efficiency for generating the cold air and on the other hand requires maintenance and cleaning with a lower cost and time.

To solve this problem, a cooling rack with a heat exchanger and an air circuit is proposed, wherein the air circuit comprises a suction and the cooling rack characterized in that in the suction at least one strainer with a relative to the horizontal and relative to the vertical inclined flow surface is arranged. Advantageously, preferably falling at a defined point over a so arranged flow area in the suction or falling in this protection, whereby a cleaning of the intake can be done with less effort. [08] In this case, a protective catcher may already be a housing wall that is advantageously shaped for this purpose or a molded module with an inclined flow area that has been introduced into the intake area.

[09] The flow surface refers to a surface of this assembly or of the corresponding housing part, at which the flow caused by the air circulation is guided along. The guidance of the flow ultimately requires the movement of the dirt particles present in the intake area up to a suitable collection point.

Such a suitable collection point for dirt or debris may, for example, consist of a container or of an opening in the housing of the cooling rack. For this purpose, a strainer is advantageously designed such that the strainer comprises a gutter. In an assembly designed as a gutter, the dirt or dirt particles can thus be caught in such a way that the cleaning of a cooling rack equipped with such a gutter can be very efficient.

[1 1] In order to further reduce the cleaning effort, it is also possible to use means for pumping water into the gutter. Dirt in the gutter can thus be removed by this introduced into the gutter water without further intervention or manual cleaning by cleaning personnel must be made. In addition to this advantage, the water delivered into the gutter may also be the water condensed on a surface of the heat exchanger. In this respect, on the one hand can be dispensed with an additional water connection to the cooling rack and on the other hand, the already existing condensate is fed to a use as a cleaning agent, so that the condensate is no longer pure waste product, which ultimately no further measures must be provided over the prior art, since the condensate had to be treated appropriately even in refrigerated shelves according to the prior art.

[12] For effective use of the condensed water intended as a cleaning agent, the conveying means may comprise water pipes arranged along a longitudinal extent of the gutter. Naturally and according to the embodiment of the cooling rack, a collecting channel is preferably formed along the entire width of the cooling rack. In this respect, conveyors with water pipes along the gutter are particularly efficient for soil removal.

The housed in the housing of the cooling rack heat exchanger usually refers to its cold air flow over the intake and a guided through a bottom group of the cooling rack channel. As well as the dripping of the heat exchanger condensate in drips a collecting container located in this channel, it is correspondingly advantageous if the conveyor disposed in a housing of the cooling rack and / or angeordhersind between the intake and the heat exchanger. Unnecessarily long and costly lines for the transport of condensed water from the sump to the gutter are thus avoided.

Because of the use of the above-described cleaning system, it is also advantageous if the gutter has a drain for dirty water. Wastewater refers to the condensed water laden with debris from the gutter. The drain may further comprise a siphon thereby additionally providing effective protection against odor nuisance. This measure is particularly significant because the cold air flow of the cooling rack is guided over the drainage opening of the gutter and this cold air flow passes through the goods space of the cooling rack in the sales room and thus can not get into the goods and / or sales room loaded with unwanted odors cold air. [15] In order to further achieve the object stated at the outset, a cooling rack with an air circuit is proposed, the air circuit comprising a suction region and means for collecting condensate, and the cooling rack being characterized by means for conveying the condensate to the suction region of the air circuit. Regardless of the above-described features of the present invention, the means for conveying the condensate are already advantageous for a cooling rack, as this already a much simpler cleaning of the cooling rack is also made possible in this area.

[16] The conveying means may comprise nozzles. The increase in the flow rate occurring at a nozzle in this case has an advantageous effect on the intended cleaning of the cooling rack, since dirt present in this way can be removed much more efficiently, for example, from the intake area or from the dirt collecting channel or from the dirt catcher.

Advantageously, the intake area on the input side comprise a per se known grille of the cooling rack, whereby coarse protection and the air duct clogging waste even can not get into the intake and thus required cleaning intervals for the cooling rack can be extended.

For operating a cooling rack with a heat exchanger and an air circuit and a method is proposed, in which air of the Luftkreislaüfes is guided through the heat exchanger and condensate formed on the heat exchanger is removed from the heat exchanger, wherein the method is characterized in that the condensate is used as means for cleaning at least one assembly of the cooling rack. As already explained above, therefore, the condensate accumulating in the cooling rack anyway can be used for active cleaning, whereby advantageous cleaning intervals for manual cleaning can be extended. This in turn reduces costly maintenance and cleaning.

For the proposed method, it is also advantageous if the condensate is removed after use as a cleaning agent from the cooling rack. This in turn also reduces the maintenance and cleaning effort, is waived in the collection of dirty water or used as a cleaning agent condensate. It is advantageous at this point an embodiment of a cooling rack, in which a drain for condensate is not provided on a condensate collecting tank but on the assemblies to be cleaned.

[20] According to a further aspect of the invention, a cooling rack with an air circuit is proposed in order to achieve the object of the invention, wherein the air circuit comprises a suction area and the cooling rack is characterized by a collecting channel detachably arranged in the suction area. Alternatively or cumulatively to the features described above, a manual cleaning of the gutter can be done very easily, especially if this gutter can also be removed from the cooling rack. In addition, the intake area can be cleaned better if the j

Gutter from the housing of the cooling rack, in particular from the intake, is removed.

[21] For this purpose, it is particularly advantageous if the collecting channel is arranged below a cover grid, wherein the cover grid is arranged detachably on the cooling shelf. This, already coarse dirt-off, grille does not hinder easy cleaning of the gutter or the intake, if this can be easily removed from the cooling rack.

[22] Depending on the concrete implementation of the invention, it is also advantageous if the gutter is permanently connected to the cover grid. Thus, in turn, advantageously reduces the effort to disassemble the gutter, since hereby only one component must be removed.

[23] For ease of disassembly of the gutter without spilling the protection herein, it is further advantageous if the gutter has a gutter width and a gutter length, the gutter width having a smaller dimension than the width of the aspiration area and / or the gutter length has a smaller dimension than the length of the suction area. Contrary to the view of the terms "width" and "length" of the cooling rack is meant by the "gutter length" the extent of the channel along the width of the cooling rack, ie along the lateral extent of the cooling rack, when the open side of the goods compartment as "front" and Thus, the "width" of the gutter designates that dimension of that gutter which marks an extension between the front and the rear part of the cooling rack.

Furthermore, the gutter can be mounted on a support of the cooling rack. The detachable configuration of this gutter thus advantageously provides a possibility for fixing the gutter in a desired position, in particular in a fluidically favorable position.

Desired fluidic properties or else advantageous properties for assembly and disassembly are made possible in that at least one cross-sectional area of the gutter is formed asymmetrically. Troughs have along their width, ie in cross section, usually two symmetrically arranged to a vertical axis walls. For use in a cooling rack, in particular for the above-mentioned fluidic properties and assembly and disassembly properties, one of the two walls can also have a different pitch be designed. In this way, in particular a removal of the gutter can be facilitated by the suction, which is also advantageous regardless of the other features of the present invention. According to the asymmetry, an asymmetrical mounting of the gutter can be provided, which accordingly facilitates a removal, since more space for movement can be created by a corresponding offset.

[26] In addition to the asymmetry of the gutter, the gutter may have a drainage slope. A drainage slope thus characterizes the part of a wall of a gutter, which extends beyond the vertical extent of the second wall of the gutter, whereby a collection and discharge of liquids or solids in the gutter can also be done outside its widest point.

[27] Particularly advantageously, a collecting channel is designed in the form that at least one edge of the collecting channel is arranged below a Kappschräge. With Kappschräge in this case a nose or tab is meant below the cover grid, which is able to keep falling through the grille covering dirt safely away from the located in the space between the edge of the gutter and the rest of the housing gap. It is immediately apparent that such a chamfer slope preferably has at least the same longitudinal extension as the gutter and should be arranged immediately above a corresponding edge of the gutter, so that their capping effect can not be affected as possible.

Furthermore, it is advantageous if the collecting channel is arranged on a spacer. This spacer, which defines both the horizontal distance of the gutter and the vertical distance of the gutter to the housing of the cooling rack, makes it possible to optimally position the gutter in the suction. On the one hand, this positioning can serve to optimally arrange the collecting channel on the basis of the flow in the intake area or to optimally arrange it on the basis of the geometric properties of the intake area. It is also possible, however, an arrangement of the gutter such that under this gutter optionally space for additional components such as a water pump, a water pipe or a drain can be provided. It is proposed according to a further aspect of the invention, a cooling rack with a first air curtain and at least one second air curtain, wherein the first air curtain is fed with air from a first intake and the second air curtain with air from a second intake and the Cooling shelf characterized in that at least a portion of the second intake is located near the bottom. The arrangement of a portion of the second intake near the bottom causes particularly advantageous the intake of cool air from the environment, since, as immediately apparent, cool air accumulates in the bottom region of a room and this cool air is suitable for the production of a second air curtain, without the second Air curtains to be fed otherwise with cold air.

[30] In order to make advantageous use of existing structures of the cooling rack for this use, it is possible that at least a partial area of the second suction area is arranged in an outer wall of a floor group of the cooling rack. Cumulatively or alternatively, it is conceivable that at least a portion of the second intake area is arranged on a forward-facing side of the cooling rack. By means of these embodiments, on the one hand, a second intake area can be provided with only a small additional expenditure, since the wall of a bottom group of the refrigerated shelf is already present on the refrigerated shelf, and on the other hand, with an arrangement of the second intake area on a forwardly facing side of the refrigerated shelf, the advantage to suck the air escaping from the cooling rack into the environment, in particular the cold air escaping into the environment, and to feed the second air curtain. It is immediately apparent that the efficiency of the cooling rack can be increased by means of these measures, since the supply of the second air curtain is not effected by cooled air of the first air curtain, which is cooled in the cold air circuit of the cooling rack via the existing evaporator or heat exchanger. It is used in the best case, only the air for feeding the second air curtain, which escapes anyway in the environment and would therefore be lost to the refrigeration cycle.

[31] In addition, the second intake region may have at least one further partial region, wherein the further partial region is arranged above the first partial region. When providing a second air curtain, it may be necessary to regulate the temperature of this air curtain by supplying additional, warm air. Therefore, it is cumulative also advantageous if the further sub-area has means for regulating an amount of air flowing through the further sub-area. The regulation of this amount of air flowing through the further sub-area serves, as already indicated, for the temperature control of the air emerging from the second air curtain. Preferably, therefore, the further portion is arranged above the first portion to suck in warmer air here. It is also conceivable, the supply of the other part of the area with additional cool air, if additional cool air, for example, by an already located outside the cooling rack air conditioning is available.

Alternatively, it may be provided that the means for regulating is a throttle having a flow cross section, wherein the flow cross section of the throttle is designed to be variable. As a result, the amount of air sucked in through the further subarea can be set particularly advantageously.

[33] Furthermore, at least one air channel with at least one cross-sectional area may be arranged between the second intake area and an outlet for the second air curtain, the cross-sectional area of the air channel being smaller than an opening cross-section of the second intake area and / or the outlet for the second air curtain. It is advantageous to provide an air duct available, which in its dimensions and in particular in its lateral surface can be made particularly compact and therefore particularly cost-effective. In particular. This is advantageous if the outlet for the second air curtain over the entire width of the cooling rack or over the entire width of the goods space, for example, as a long-drawn slot executed. A connected to the outlet air duct must therefore no longer necessarily have the entire width of an outlet opening. For example, the air duct can be designed such that the air duct widens in a funnel shape in a region immediately in front of the outlet opening of the second air curtain, whereby a uniform transition from the air duct to the outlet of the second air curtain is generated.

The last-mentioned advantages can also be implemented for a cooling rack in that at least one air duct with at least one cross-sectional area and at least one circumference is arranged between the second intake area and an outlet for the second air curtain, wherein the ratio of the cross-sectional area of the Air duct to the periphery of the air duct is greater than a cross-sectional perimeter ratio of the second intake and / or the outlet.

In addition, a cooling rack can advantageously also be characterized in that means for generating an air flow are arranged in an air duct connecting the second intake area to the outlet for the second air curtain, and the means for generating an air flow are arranged in a ceiling area of the refrigerated rack. For example, for this purpose, a fan or fan is provided, which is able to promote the required air for the second air curtain through the air duct. The use of a separate fan also offers the advantage that both this separate fan according to the required amount of air for the second air curtain and the fan or fan for the first air curtain can be designed according to the required amount of air. It is therefore not necessary to use oversized assemblies for generating an air flow, which in turn costs can be saved and ongoing costs. [36] Since the second intake area, as suggested above, can suck in ground-level air, in particular air enriched with dust particles, a filter should be arranged in an air channel connecting the second intake area with the outlet for the second air curtain.

It is understood that a partial region of the second suction region arranged near the bottom can also be advantageous from all other features of the present invention.

According to a further aspect of the present invention, regardless of the other features of the present invention, a refrigerated shelf with at least one air curtain and an air supply for the air curtain of the invention is proposed, wherein the air supply means for directing the air curtain from the air supply and the refrigerated shelf by at least a bolt for setting the directional means is excellent. By this bar, which preferably fixes the directing means positively on the cooling rack, the directing means can be removed with very little effort from the cooling rack and used again, so that a cleaning of these directing means as simple and fast can be done without having to compromise in terms of security with regard to the attachment of the directing means. In this case, the air supply designates the location of the cooling shelf from which the cold air for the air curtain emerges from the ceiling area of the cooling rack. The directional means in turn consist for example of an elongated strip with a honeycomb structure, the honeycombs each having a longitudinal extent in the flow direction, so that this longitudinal extent corresponds approximately or at least to the hydrodynamic inlet length of the air flow located in this honeycomb. However, it is also possible to use lamellar arrangements or other airflow-soothing flow-guiding arrangements as the directing means. Thus, as uniform as possible a cold air curtain can be made available for the entire width of the directing means or for the entire width of the cold air curtain. The flow formed in these directing means or by the directing means is therefore preferably laminar.

A possible embodiment of the bolt is that the bolt has a support surface for the directing means, wherein the bolt along the support surface displaceable and / or in an axis perpendicular to the support surface is rotatably operatively connected to the cooling rack and / or with the directing means. These embodiments of the bolt not only provide a positive connection of the directing means with the cooling rack, but also a corresponding surface for the directing means on which these directing means can rest. Thus, the bolt serves not only the positive fixing of the directing means, but also the correct positioning of these directing means within the cooling rack, in particular within the air supply in the ceiling region of the cooling rack. Advantageously, at the same time the bolt can be connected instead of a part of the housing of the cooling rack with the directing means itself.

[40] In order to facilitate easier installation, in particular a one-hand operation, it is correspondingly advantageous if the bolt has a captive. Thus, the bolt can remain on the cooling rack or on the directing means when the directing means are removed, so that the bolt is not present as a single component and must be stored during disassembly of the directing means.

[41] In this respect, it is also advantageous if the bolt is designed in one piece with the cooling rack and / or with the directing means. Thus, the assembly of the directing means is further simplified because the bolt is no longer present as a single component. Are the Directional means made for example of a plastic, so a bolt can also be configured as a snap closure on these directing means. Such a snap closure, as immediately apparent, can also be designed on the housing of the cooling rack. In addition, such a designed latch can also be made of metal or an equivalent elastic material.

[42] The bolt can also be configured in the form that the bolt, the directing means and / or the cooling rack have means for frictional and / or positive locking of the bolt in a closed position. This configuration serves to prevent the bolt against unintentional opening and thus the directing means from falling out of the cooling rack. For example, the latch in a closed position may have a detent position in which the latch is firmly positioned. It is also conceivable a determination of the bolt on a locking pin.

[43] It is also conceivable that the directing means are arranged in a module and the module has at least one system. Thus, a directing means can be accommodated within a module designed as a frame, whereby the disassembly of the directing means from the cooling rack via the disassembly of said module. As a result, the ceiling area or the area of the air supply of the cooling rack can advantageously also be exposed for cleaning by the module being designed simultaneously as a termination module or as a cover for the air supply. [44] The system located in the module is advantageously designed such that this system interacts with the support surface. This bearing surface of the directing means is thus in an assembled state on the system of the module, whereby a secure hold of the directing means is ensured within the module.

In this case, the directional means are preferably at least two parts, possibly also three or more parts, formed, wherein the parts are arranged one behind the other in the longitudinal direction and a length of less than or equal to 70 cm. Although this increases the assembly and production costs, as a result, significantly more handles or manufacturing steps are necessary, however, allow such short Richtmittelteilstücke easy handling during maintenance and cleaning work, since then the Richtmittel- Parts can also be easily removed by individuals. In particular, it is also possible to clean such trained Richtmittelteilstücke in a conventional dishwasher. In this respect, it is understood that a cooling rack at least one air curtain and an air supply for the air curtain, wherein the air supply means for directing the air curtain from the air supply and the cooling rack is characterized in that the directing means are formed at least in two parts, wherein the parts in the longitudinal extent - Direction are arranged one behind the other and have a length less than or equal to 70 cm, also independent of the other features of the present invention is correspondingly advantageous. [46] In this context, it should be emphasized that an arrangement of subassemblies in the longitudinal direction of succession, the subassemblies have a length less than or equal to 70 cm, accordingly - regardless of the other features of the present invention for the strainer of a cooling rack with a strainer in the intake , is accordingly advantageous for nozzle arrangements of a cooling rack with condensate conveying means and / or for a collecting channel of a corresponding cooling rack.

The input asked task is cumulatively or alternatively solved by a cooling rack with at least one air curtain, with at least one air supply and an air intake for the air curtain, with means for directing the air curtain from the air supply and at least one insulating curtain, wherein the Directional means have an outlet cross-section and the air intake having an inlet cross-section and wherein the cooling rack is characterized in that the cooling shelf, in particular the insulating curtain, has means for reducing the inlet cross-section. The use of the insulating curtain to reduce a loss of cold through the open goods space advantageously causes a reduction in the cooling capacity required for cooling. The adaptation to the lower required cooling capacity thus takes place by reducing the inlet cross-section, so that the volume flow of the cold air flow is reduced and the cold air flow is thus adapted to the required cooling capacity. By this measure, finally, the

Energy consumption of the cooling rack significantly reduced. In this way, in particular ■ too much cooling of the insulating curtain, which ultimately just does not need to be cooled but only serves to control the air flow, can be avoided. [48] The means for reducing the inlet cross-section may further be carried out in such a way that they are a terminating strip of the insulating curtain with suction openings. This end bar can thus be placed when closing the insulating curtain on the air intake, whereby the intake ports of the end bar to the effective intake of the air intake. In this respect, it is also advantageous if the cross section of the intake openings is smaller than the inlet cross section. The inlet cross-section of the air intake is, as immediately apparent, then reduced by the suction, thereby reducing the volume flow of the entire present in the cooling rack cold air flow, however, the total cross section can also be reduced by a cover bar, which only partially covers the entrance.

[49] For reliable closing of the insulating curtain to which the end strip is preferably attached, the end strip may have positive and / or positive locking means for attaching the Isoliervorhangs to the air intake. This version of the end strip leads to advantageous synergy effects, since this end strip can also take over the function of closing and thus a further closing mechanism on the insulating curtain is not necessary. Force-locking means for attaching the insulating curtain to the air intake may in this case be, for example, magnets or a clamp closure. The insulating process can be positively secured or closed by a snap lock, a latch, a lock, a hook or similar locking mechanisms. [50] In order to adapt the electric power and / or the technical performance of a fan used to generate the air flow even with a closed insulating curtain, ie with a reduced air volume flow, the cooling rack equipped with means for reducing the inlet cross-section by means for controlling at least an air volume flow of the cold air curtain be excellent, wherein the control means are at least one electromechanical contact switch and / or at least one magnetic contact switch. In this case, the contact switch is preferably controlled by the insulating curtain, so that with appropriately extended insulating curtain, a correspondingly lower air mass flow is provided by the fan or the fans. By means of these control aids can thus be actively adapted to the conditions of a reduced air flow rate, the fan speed of the cooling rack. An unnecessarily high power consumption of the cooling rack for cooling the goods located in the goods room Goods are thus avoided. It is understood that any type of switch that can be controlled accordingly by the insulating curtain or together with the insulating curtain, can be used accordingly, so that an adjustment of the air mass flow takes place by pressing the insulating curtain. [51] In order to solve the object of the present invention, alternatively or cumulatively, a method is proposed for operating a refrigerated shelf with at least one air curtain, with at least one insulating curtain and with at least one fan for producing at least one air curtain, which is characterized in that When the curtain is closed, the fan delivers a lower air volume flow and / or air mass flow than when the curtain is open. The fan or a fan of the cooling rack naturally requires an electrical power to convey the air used as cold air. With a reduced air volume flow or air mass flow, through the use of an insulating curtain and / or an air flow limiting, it is, as immediately apparent, of considerable advantage to control the air volume flow and / or the air mass flow of the fan in addition via the fan power. A reduced energy consumption of the entire refrigerator shelf is the result. Blower and fan or fan power and fan power are understood in this context as synonymous.

[52] In addition to this feature described above, by means of this method, the performance of the fan can be controlled via at least one electromechanical contact switch and / or via at least one magnetic contact switch. Since the switching of the fan to a lower power is preferably carried out in a closed insulating curtain, it is particularly useful and advantageous to provide a corresponding contact switch which reliably detects a closing of the insulating curtain.

[53] It is understood that the features of the solutions described above or in the claims can optionally also be combined in order to implement the advantages in a cumulative manner.

[54] Further advantages, objects and characteristics of the present invention will be explained with reference to the following description of the appended drawings.

In the drawing show: a cooling rack in longitudinal section with a collecting channel for dirt and with cleaning nozzles;

a gutter for dirt with a cleaning nozzle and with a drain;

two symmetrically arranged gutters with cleaning nozzles and drains;

a gutter in cross-section with cleaning nozzles and a drain; a detailed view of a cooling rack and a gutter with a drainage slope;

a detailed view of a cooling rack and an alternative gutter with a drain slopes and with cleaning nozzles;

an outlet honeycomb for a refrigerated shelf;

a detailed view of a refrigerated shelf with a latch for a Auslasswabe; a detailed view of a refrigerated shelf with an alternative latch for a Auslasswabe in the locked state;

the bolt of Figure 8a in the unlocked state;

a detailed view of a refrigerated shelf with an alternative latch for a

Outlet honeycomb in the locked state;

the latch of Figure 8c in the unlocked state;

a cooling rack in longitudinal section with a cold air curtain and with a Bodenluftansaugung;

a cooling rack in plan view with a bottom air duct and a bottom air supply;

a cooling rack in longitudinal section with an insulating curtain and with a closing strip;

a detailed view of a cooling rack with an alternative insulating curtain and a closing strip;

a detailed view of a refrigerated shelf with an insulating curtain of Figure 11 and an alternative end strip;

a detailed view of a refrigerated shelf with an insulating curtain of Figure 1 1, with a further alternative end strip and with a snap bar; Figure 15 is a detail view of a refrigerated shelf with an insulating curtain of Figure 1 1, with a further alternative end strip and with a snap bar;

16 shows a detail view of a cooling rack with an insulating curtain and a

End strip according to Figure 15 and with an alternative snap bar;

17a shows a detailed view of a cooling rack with an alternative arrangement of a

Insulating curtain and a terminal strip in the open position; Figure 17b shows a detail of a refrigerated shelf with an insulating curtain and a

End strip of Figure 17a in a partially closed position;

FIG. 18 a shows a detailed view of a cooling rack with a further alternative arrangement of an insulating curtain and a closing strip in the open position;

Figure 18b is a detail view of a cooling rack with an insulating curtain and a

End strip of Figure 18a in a partially closed position; and FIG. 19 shows a perspective view of an insulating curtain with a closing strip according to FIG. 13.

Figure 1 shows an illustration of a cooling rack 101 in longitudinal section with a collecting channel 136 for dirt and with cleaning nozzles 135. The illustrated cooling rack 101 has in its basic structure on support arms 102 in its goods room on which the issued goods are stored. These support arms 102 are fastened in a rear wall 120 or on a cold air duct 11 arranged between this rear wall 120 and a rear wall cladding 121. From the rear wall cladding 121 between two support arms 102, the cold air 1 17 exits for cooling the goods located in the cooling rack 101. Another part of the guided through the cold air duct III cold air flow 1 13 is passed to a ceiling area 122, where from a cold air supply 1 15 this cold air flow 1 13 a cold air curtain 116 is supplied. This cold air curtain 1 16 causes a shielding of the cold air 1 17 flooded goods room against the ambient air. In the bottom portion 1 19 is an intake portion 1 15 of the cold air duct 1 1 1, which is limited to the goods space on the channel cover 123. In an opening of the channel cover 123, the cold air intake 1 10, there is a grille or collecting grille 137, through which in turn air for the cold air flow 1 13 is sucked. To promote the air to be cooled, the fan 1 12 in the vicinity of the bottom portion 1 19 of the Refrigerated shelves 101 provided. The cooling in turn takes place via the heat exchanger 1 14, which in turn is connected to a chiller, not shown.

[56] To avoid coarse contamination in the cold air duct 1 1 1, the aforementioned collecting grid 137 is provided. Dirt, which can not be prevented from this collecting grid 137, preferably falls into the collecting gutter 136 shown. This collecting channel 136 is on the one hand under the collecting grid 137 on the cold air intake 1 10 arranged that dirt on the one hand can fall directly into the collecting channel 136 and On the other hand collected by the cold air flow 1 13 dirt in the gutter 136 and is caught by the applied flow. The gutter 136 should be cleaned at regular intervals and thus be cleaned of dirt. To extend these cleaning intervals, for cost-efficiency, this gutter 136 has cleaning nozzles 135 and a siphon 138, which in turn leads to a drain 139. Via the cleaning nozzles 135, water, in this case condensate 131, can thus be sprayed into the collecting channel 136 in order to actively remove the dirt. The condensate 131, which is used as a cleaning agent precipitates on the heat exchanger 1 14 and collects in the condensate tank 132. Due to the open design of the cooling rack 101, in addition to the dirt, which collects in the cold air duct 111, also always moist air through the Fan 1 12 circulated. There is thus enough condensate for a cleaning of the gutter 136 available. [57] The condensate 131 is conveyed from the condensate tank 132 to the cleaning nozzles 135 via the condensate pump 134, which is arranged in the condensate line 133. As an alternative to the condensate tank 132 and the use of the condensate 131 as a cleaning agent, as already apparent, a fixed water connection to the cooling rack 101 could also be provided. [58] A dirt collecting channel 136 with a cleaning nozzle 135 and with a drain 139 is shown in FIG. 2a. Pictured here is the gutter 136 in front view. It is conspicuous that the gutter 136 is carried out along its length with a sufficient tendency for the drainage of the dirty water. The cleaning nozzle 135 is in this case attached to one end of the gutter, wherein the siphon 138, which in the drain 139th leads, is arranged on the opposite side of the cleaning nozzles 135 at a lowest point of the gutter.

As shown in FIG. 2 b, two collecting channels 136 can also be used in a cooling rack 101, wherein the two collecting channels 136 are arranged symmetrically and are each equipped with cleaning nozzles 135 and with drains 139. In this embodiment, in which the gutter 136 corresponds to the gutter 136 of Figure 2a, the cleaning nozzles 135 are mounted in a central horizontal position and the drains 139 are attached to the respective siphon 138 at an outer horizontal position. Conceivable is also a reverse arrangement, wherein the left-side and the right-side collecting channel 136 are arranged so reversed or rotated that the cleaning nozzles 135 are arranged at an outer position and the outflows 139 at an inner position. It is immediately apparent that in such an arrangement, only one siphon 131 and one outflow 139 are sufficient. Likewise, cleaning nozzles can be arranged over the entire width of the collecting channels 136. FIG. 3 shows a collecting channel 136 according to FIGS. 1, 2a and 2b in cross-section with the cleaning nozzles 135 and a drain 139 arranged on this collecting channel 136. In this embodiment, the cleaning nozzles 135 are shown in greater detail, with a respective cleaning nozzle 135 on one the two upper edges of the gutter 136 are arranged. The illustrated siphon 138 in turn performs the condensate 131 from the gutter 136.

FIG. 4 shows a detailed view of a cooling rack 101 and a collecting channel 136 with a drainage slope 141. In order to promote by means of the cold air flow 1 13 falling through the grille 137 in the cold air intake 1 10 dirt into the gutter 136 and to hold there, it may be necessary to arrange the gutter 136 horizontally offset from the collecting grid 137. The drainage slope 141 ensures in this case that between the collecting channel 136 and the remaining housing of the cooling rack 101, no open gap remains and the dirt reliably enters the collecting channel 136. To avoid further gaps between the edges of the gutter 136 and between the edge of the drain slope 141 and the rest of the housing of the cooling rack is at the Cold air intake 1 10 additionally arranged a Kappschräge 143, which lays over an edge of the drainage slope 141. The drainage slope 141 and the collecting channel 136, which in this embodiment consist of one component, are mounted on the gutter support 140 and on the lateral support 142. It is also conceivable, as immediately apparent, an embodiment of the gutter 136 without a slope oblique when the Kappschräge 143 is extended until an edge of the Kappschräge 143 projects into the gutter 136. Here, the collecting channel 136 is formed asymmetrically and thus can be removed obliquely via the drainage slope 141 from the upper opening, which remains when the collecting grid 137 is removed with the capping ring 141. In this respect, the channel 136 is slightly narrower than this opening, while the remaining channel is formed by the drainage slope 141. In this respect, a removal is possible without having to tilt the gutter 136 so that, if necessary, can also be dispensed with a flow.

[62] An alternative gutter 136 with a drainage slope 141 and with cleaning nozzles 135 shows the detail view of a cooling rack 101 from FIG. 5. In this embodiment, the gutter 136 and the siphon 138 connected thereto and the drain 139 in the cold air duct 11 are in the immediate vicinity Close to the condensate tank 132 between the fan 1 12 and the heat exchanger 1 14 arranged. The spatial distance of the gutter 136 for cold air intake 1 10 and the collecting grid 137 requires a drainage slope 141 with an approximately the bottom portion 1 19 of the cooling rack 101 corresponding width. The obliquely applied to the drain 141 condensate 131 is again introduced via cleaning nozzles 135 at a highest point of the drain inclined 141. The gutter support 140, not shown, holds sufficient space to accommodate the condensate line 133 and the condensate pump 134 in the cold air duct 1 1 1 or above the floor area 1 19 under the collecting gutter 136 and the drainage slope 141. Via this condensate line 133, the condensate 131 precipitating on the heat exchanger 14 is conveyed from the condensate tank 132 to the cleaning nozzles 135. Shown in this embodiment, a further drainage slope for the condensate tank 132, which is mounted along the rear wall 120 and discharges the ausfallende from the heat exchanger 1 14 condensate 131 into the condensate tank 132. Also, the collecting channel 136 and the drainage slope 141 shown here can be designed to be removable, wherein also the collecting grid 137 can be dismounted. [63] FIG. 6 shows an outlet honeycomb 251 for a refrigerated shelf, which is used as a means for directing a cold air curtain 216. The Auslasswabe 251 equipped with a plurality of parallel honeycomb channels 253 is arranged in a ceiling region of the refrigerated shelf in order to produce a possible laminar cold air curtain 216 there. The length of the honeycomb channels 253 is preferably configured such that the honeycomb channels 235 have at least the length of the flow-mechanical inlet length of the cold air curtain 216 flowing through these honeycomb channels 253. The Auslasswabe 251 is installed in this embodiment in a module 252, wherein the module is in turn mounted on the cooling rack or represents an assembly of the cooling rack. The Auslasswabe 251 is further mounted on the support surfaces 254 by means of the counter surface 255. This type of enclosure of the Auslasswabe 251 by the module 252 is a positive fit, but can also be done in a non-positive fit.

FIG. 7 shows a cooling rack in a detailed view with a latch 258 for an outlet honeycomb 251. This outlet honeycomb 251 is hereby mounted, similar to FIG. 6, with its mating surfaces 255 on a support surface 254, one of these support surfaces 254 being supported by an outer surface Housing 257 and the further bearing surface 254 are provided by the latch 258. The removably executed latch 258 again fixes the outlet honeycomb 251 in a form-fitting manner between the outer housing plate 257 and the inner housing plate 256 in the cooling rack. The latch 258 according to this embodiment can be disassembled rotatably, wherein the snap closure 260 surrounds a securing nose 259 and in turn connects the latch 258 to the inner housing plate 256 in a reliable manner.

[65] Another embodiment of the latch 258 is shown in Figure 8a with this latch 258 in a closed position securing the outlet honeycomb 251 from falling out of the refrigerated rack.

[66] In the open position, the latch 258 is shown in FIG. 8b, wherein in this embodiment the latch 258 is to be completely removed from the inner housing plate 256 after the snap closure 260 has been released. After removing the bolt 258, for which a corresponding handle 261 is provided on the latch 258, then the Auslasswabe 251 can be removed from the cooling rack for replacement or for cleaning. Possibly. For example, the bolts 258 may also be provided captively on the cooling rack 258 or provided with a further latching step 270 in order to facilitate maintenance and cleaning work, as illustrated by way of example in FIGS. 8c and 8d.

Since the Auslasswabe 251 may also consist of a plastic or metal, it is also possible to attach the latch 258 or only a snap closure 260 on the Auslasswabe 251, or form the Auslasswabe 251 integral with the snap closure 260. The securing nose 259 worked out from the inner housing plate 256 can thus still be used for the positive or non-positive connection of the outlet honeycomb 251 to the housing plates 256, 257.

In this embodiment, the respective Auslasswaben 251 or modules 252 in their longitudinal direction, that is perpendicular to the plane of Figures 7 and 8, 4] cm or 62 cm long and there are multiple Auslasswaben 251 or modules 252 in the longitudinal direction one behind the other arranged so that the Richtmitte] accordingly extend over the entire width of the cooling rack. For example, three Auslasswaben 251 or modules 252 with a length of 41 cm or two Auslasswaben 251 or modules 252 of 62 cm in each case can be used to a cooling rack width of 125 cm with sufficient clearance and with sufficient variability to other cooling rack widths cover. This allows easy removal of the individual Auslasswaben 251 or modules 252 for cleaning and maintenance purposes. In particular, these can also be cleaned in commercially available dishwashers. It is understood that other dimensions, depending on the specific requirements, can be used accordingly.

[69] A further embodiment of a cooling rack 301 is shown in FIG. 9, wherein the cooling rack 301 has a bottom-air duct 363 in addition to the cold-air duct 31 1. By means of the illustrated bottom air duct 363, it is possible to produce the illustrated double air curtain, consisting of the known cold air curtain 316 and the bottom air curtain 370, to better shield the goods compartment of the cooling rack 301 against warm ambient air, as would be possible with a single air curtain. The ventilation losses of the cold air curtain 316, not shown in FIG. 9, generally result Cooling of the installation space or of the area immediately in front of the cooling rack 301. The bottom air 361 located in the sales room or installation space in front of the cooling rack 301 is therefore sucked into the bottom air duct 363 and provided by the floor to supply a bottom air curtain 370 at the bottom air intake 362. area 319 of the cooling rack 301 by means of the floor air fan 367 to the ceiling portion 322 of the cooling rack 301. The bottom air 361 conveyed into this ceiling region 322 of the cooling rack 301 is supplied to the bottom air curtain 370 by nozzles 369 located in the bottom air feed 368.

[70] For the regulation of the temperature of the bottom air curtain 370 it may be necessary to add 361 hot air 365 to the ground air. For this purpose, a hot air intake 364 is provided above the bottom air intake 362, in the embodiment according to FIG. 9 in a rear wall region of the cooling rack 301. The hot air intake 364 includes, for control purposes, the throttle 366, which controls the amount of heated hot air 365. The generation of the cold air curtain 316 takes place, as already shown in FIG. 1, via the fan 312 located in the cold air duct, which draws in air via the cold air intake 310 and conveys the cold air flow 313 generated by the heat exchanger 314 into the ceiling region 322 of the cooling rack 301 , At the same time, as likewise explained above, the cold air 317, which cools goods, not shown, located on the support arm 302, exits at the rear wall cladding 321.

To provide the bottom air curtain 370, the bottom air supply 368 shown in FIG. 10 is provided in the ceiling region 322 of the cooling rack 301, wherein the bottom air feed 368 is preferably configured over the entire width of the cooling rack 301. In contrast, the bottom air duct 363 to make the production of the bottom air duct 363 cost-effective, designed in a smaller width. Thus, the bottom air channel 363 widens in a funnel shape downstream of the bottom air fan 367, so that the bottom air supply 368 can be performed in the entire required width.

[73] A cooling rack 401 with an insulating curtain 471 and with a closing strip 473 is shown in FIG. 11. This insulating curtain 471 is preferably at night or on sales-free days used to close the cooling rack 401, so that a closed air cycle in the cooling rack 401 arises. The cold air curtain 416 and the cold air 417 can thus be promoted out again without ventilation losses in the cold air duct 411 and from this cold air duct 411. The fan 412 and the heat exchanger 414 consequently require significantly less cooling capacity for the cooling of the goods stored on the support arms 402 and shelves 403. The floor area 419, the rear wall 420 and the ceiling area 422 are usually already equipped with an insulation, whereby the energy efficiency of the cooling rack 401 is again significantly influenced by the insulating curtain 471. [74] The insulating curtain 471 in turn is fastened in this embodiment via a winding 472 to the ceiling region 422 of the cooling rack 401. By means of this winding 472, the insulating curtain 471 can thus be easily and quickly closed and opened again as required. In addition to the insulating effect caused by the insulating curtain 471, the cooling rack 401, in particular the insulating curtain 471, is equipped with a terminating strip 473 which limits the inlet cross section of the collecting grid 437. By means of this limitation of the inlet cross section, the cold air flow 413 or the volume flow of the cold flow 413 is reduced, so that the refrigeration capacity entered into the refrigerated shelf 401 is likewise reduced. The end strip 473 is preferably located directly on the collecting grid 437. However, it is also possible a support of this end strip 473 on the channel cover 423 or the front portion of the bottom portion 419. The Isolierhang 471 in turn can consist of both a textile material and metallic lamellae.

In FIGS. 12 to 18b, detailed views of a cooling rack 401 with alternatively mounted insulating curtains 471 and alternative finishing strips 473 are shown. FIG. 12 shows an insulating curtain 471 and a closing strip 473 formed separately therefrom, wherein the insulating curtain 471 terminates with a front of the bottom region 419 of the cooling rack 401. The end strip 473 is placed on the collecting grid 473 for limiting the air volume flow. The channel cover 423 delimiting the cold air duct 411 can also have a receptacle for the end strip 473 for this purpose. It is conceivable, for example, that the end strip 473 is connected to the channel cover 423 via hinges or via alternative attachment options, so that the end bar 473 only has to be folded over to cover the collecting grid 473.

FIG. 13 shows a closing strip 473 formed with the insulating curtain 471, wherein the closing strip 473 additionally has a reducing strip 474 with openings. Thus, in this embodiment, the end strip 473 is made in the same width as the cover grille 437.

[77] A similar end strip 473 is shown in Figure 14, wherein the end strip 473 in addition to the Reduzierleiste 474 has a snap bar 475. The snap bar 475 serves to fix the insulating curtain 471, in particular the end strip 473, to the front housing area of the cooling rack 401. The formation of the snap bar 475 is also conceivable on an opposite side of the end strip 473, so that the snap bar 475 engages in a groove in the channel cover 423. Preferably formed by the operative connection of the snap bar 475 with the housing of the cooling rack 401 a positive connection or fixation of the end bar 473 and the insulating curtain 471 with the cooling rack 401. However, it is also a non-positive connection, but also magnetic connection between the snap bar 475 and the Housing of the cooling rack conceivable.

Alternatively, the end strip 473, according to the embodiment according to FIG. 15, can also be designed without a reducing strip 474 but with a snap bar 475. The difference in length between the end strip 473 and the grille 437 can be set arbitrarily in place of the use of a Reduzierleiste 474 according to the desired air flow during production.

FIG. 16 shows an alternative embodiment of the snap bar 475, wherein this snap bar surrounds the front part of the housing in the bottom area 419 of the cooling shelf 401. In addition to the embodiments of the snap bar 475 explained above, a bolt for closing off the insulating curtain 471 may additionally be provided.

The tongue and groove arrangement and / or the lowering of the support for the end strip requires that the can be easily and reliably positioned on the safety catch, so that the degree of air flow reduction can be reliably ensured. [81] A possible arrangement of the insulating curtain 471 on the ceiling region 422 of the cooling rack 401 is shown in FIGS. 17a and 17b. In this case, the winding 472 of the insulating curtain 471 is mounted above the ceiling area, so that the insulating curtain 471, when it is rolled out from an open state according to FIG. 17a for closing according to FIG. 17b, terminates flush with the front of the cooling rack, in particular the ceiling area 422. This flush arrangement of the insulating curtain 471 with the front of at least the ceiling region 422 of the cooling rack 401 can also be effected by means of an arrangement, wherein the coil 472 is disposed within the cold air duct 411 and between the cold air supply 415 and the front region of the ceiling region 422. In this respect, both arrangements allow a trouble-free flow of cold air curtain 416.

Furthermore, according to the embodiment illustrated in FIGS. 18a and 18b, the winding 472 of the insulating curtain 471 can also be arranged on the front region of the ceiling region 422, ie outside, of the cold air duct 41 1. Here, the end strip 473 is always below the winding 472 and not as shown in Figure 17a arranged on a front side of the cooling rack 401. Thus, upon closing of the insulating curtain 471 according to FIG. 18b, no further deflection of the insulating curtain 471 takes place on the housing of the winding 472.

FIG. 19 shows a perspective view of an insulating curtain 471 with a terminal strip 473 according to FIG. 13. The cover grid 437 adjoining the channel cover 423 is covered by the cover strip 473 and its reducing strip 474 when the insulating curtain 471 is closed. In this case, the reducing strip 474 reduces the inlet opening of the cover strip 437, so that the air volume flow through the entire cooling rack 401 is reduced.

Badge list:

101 Cooling shelf 252 Module

102 Support arm 253 Honeycomb duct

1 10 Cold air intake 254 contact surface

5 11 1 cold air duct 255 mating surface

1 12 fan 256 inner housing plate

1 13 cold air flow 257 outer housing plate

1 14 Heat exchanger 258 Latch

115 Cold air supply 259 Fuse nose

10 1 16 Cold Air Curtain 260 Snap closure

1 17 cold air 261 handle piece

1 19 floor area 270 further latching step

120 rear wall

301 refrigerated shelf

121 rear wall cladding

302 support arm

15 122 ceiling area

310 cold air intake

123 channel cover

311 cold air duct

131 condensate

312 fan

132 condensate tank

313 cold air flow

133 condensate line

314 heat exchanger

20 134 Condensate pump

315 cold air supply

135 cleaning nozzles

316 cold air curtain

136 gutter

317 cold air

137 collecting grid

319 floor area

138 siphon

320 rear wall

25 139 outflow

321 rear paneling

140 gutter support

322 ceiling area

141 drainage slope

351 outlet honeycomb

142 lateral support

361 soil air

143 Kappschräge

362 Soil air intake

30 216 Cold air curtain 363 Bottom air duct

251 Outlet honeycomb 364 Warm air intake Warm air 416 Cold air curtain choke 417 cold air

Bottom air fan 419 Floor area Bottom air supply 420 Rear wall

Bottom air curtain 421 Back paneling

422 Ceiling area refrigerated shelf 423 Duct cover 437 Catch shelf Shelf 471 Insulating curtain Cold air duct 472 Winding

Fan 473 End cap Cold air flow 474 Reduction strip Heat exchanger 475 Snap bar Cold air supply

Claims

claims:

1. Cooling rack with a heat exchanger and with an air circuit, wherein the air circuit comprises a suction, characterized in that in the suction at least one strainer with a relative to the horizontal and with respect to the vertical inclined flow surface is arranged.

2. Cooling rack according to claim 1, characterized in that the strainer comprises a gutter.

3. Cooling rack according to claim 2, characterized by means for conveying water into the gutter.

4. Cooling rack according to claim 3, characterized in that the water is condensed water on a surface of the heat exchanger.

5. Cooling rack according to claims 3 or 4, characterized in that the conveying means comprise along a longitudinal extent of the gutter arranged water pipes.

6. Cooling rack according to claims 3 to 5, characterized in that the conveying means are arranged in a housing of the cooling rack and / or arranged between the intake area and the heat exchanger.

7. Cooling rack according to one of claims 2 to 6, characterized in that the collecting channel has a drain for dirty water.

8. Cooling rack according to claim 7, characterized in that the drain comprises a siphon.

9. refrigerated shelf with an air circuit, wherein the air circuit comprises a suction and means for collecting condensate, characterized by means for conveying the condensate to the intake of the air circuit.

10. Cooling rack according to one of claims 3 to 9, characterized in that the conveying means comprise nozzles.

1 1. Cooling rack with an air circuit, wherein the air circuit comprises a suction, characterized by a suction in the releasably arranged collecting channel.

12. Cooling rack according to claim 1 1, characterized in that the collecting channel is arranged below a cover grid, wherein the cover grid is detachably arranged on the cooling rack.

13. Cooling rack according to claim 1 1 or 12, characterized in that the gutter is permanently connected to the cover grid.

14. Cooling rack according to one of claims 1 1 to 13, characterized in that the gutter has a gutter width and a gutter length, wherein the gutter width has a smaller dimension than the width of the intake area and / or the gutter length has a smaller dimension than the length of the intake area having.

15. Cooling rack according to one of claims 1 1 to 14, characterized in that the collecting channel is mounted on a support of the cooling rack.

16. Cooling rack according to one of claims 1 1 to 15, characterized in that at least one cross-sectional area of the collecting channel is formed asymmetrically.

17. Cooling rack according to claim 16, characterized in that the collecting channel has a drainage slope.

18. Cooling rack according to one of claims 1 1 to 17, characterized in that at least one edge of the collecting channel is arranged below a Kappschräge.

19. Cooling rack according to one of claims 1 to 18, characterized in that the collecting channel is arranged on a spacer.

20. Cooling rack with a first air curtain and with at least one second air curtain, wherein the first air curtain are fed with air from a first suction and the second air curtain with air from a second suction, characterized in that arranged at least a portion of the second suction near the bottom is.

21. Cooling rack according to claim 20, characterized in that at least one subregion of the second suction region is arranged in a wall of a bottom group of the cooling rack.

22, cooling rack according to claim 20 or 21, characterized in that at least a portion of the second suction region is arranged on a forward-facing side of the cooling rack.

23. Cooling rack according to one of claims 20 to 22, characterized in that the second intake region has at least one further partial region, wherein the further partial region is arranged above the first partial region.

24. Cooling rack according to claim 23, characterized in that the further partial area has means for regulating an air quantity flowing through the further partial area.

25. Cooling rack according to claim 24, characterized in that the means for regulating a throttle having a flow cross section, wherein the flow cross section of the throttle is made variable.

26. Cooling rack according to one of claims 20 to 25, characterized in that between the second intake area and an outlet for the second air curtain at least one air duct is arranged with at least one cross-sectional area, wherein the cross-sectional area of the air duct is smaller than an opening cross section of the second intake area and / or the outlet for the second air curtain.

27. The cooling rack according to claim 20, wherein at least one air channel with at least one cross-sectional area and at least one circumference is arranged between the second suction area and an outlet for the second air curtain, wherein the ratio of the cross-sectional area of the air channel to the circumference of the air channel Air duct is greater than a cross-sectional-circumference ratio of the second intake area and / or the outlet.

28. Cooling rack according to one of claims 20 to 27, characterized in that in a connecting the second suction with the outlet for the second air curtain Air duct means are arranged for generating an air flow and the means for generating an air flow in a ceiling region of the cooling rack are arranged.

29. Cooling rack according to one of claims 20 to 28, characterized in that a filter is arranged in a connecting the second intake with the outlet for the second air curtain air duct.

30. Cooling rack with at least one air curtain and an air supply for the air curtain, wherein the air supply means for directing the air curtain from the air supply, characterized by at least one latch for fixing the directing means.

31, cooling rack according to claim 30, characterized in that the bolt has a bearing surface for the directing means, wherein the bolt along the support surface slidably and / or in an axis perpendicular to the support surface is rotatably operatively connected to the cooling rack and / or with the directing means.

32. Cooling rack according to claim 30 or 31, characterized in that the bolt has a captive.

33. Cooling rack according to one of claims 30 to 32, characterized in that the bolt is designed in one piece with the cooling rack and / or with the directing means.

34. Cooling rack according to one of claims 30 to 33, characterized in that the bolt, the directing means and / or the cooling rack have means for frictional and / or positive locking of the bolt in a closed position.

35. Cooling rack according to one of claims 30 to 34, characterized in that the directing means are arranged in a module and the module has at least one system.

36. Cooling rack according to claim 35, characterized in that the system cooperates with the support surface.

37. Cooling shelf with at least one air curtain and an air supply for the air curtain, wherein the air supply means for directing the air curtain from the air supply characterized in that the directing means are formed at least in two parts, wherein the parts are arranged one behind the other in the longitudinal direction of extension and have a length less than or equal to 70 cm.

38. Cooling rack with at least one air curtain, with at least one air supply and an air intake for the air curtain, with means for directing the air curtain from the air supply and at least one insulating curtain, wherein the directing means have an outlet cross-section and the air intake an inlet cross-section, characterized in that the cooling rack, in particular the insulating curtain, has means for reducing the inlet cross-section.

39. Cooling rack according to claim 38, characterized in that the means for reducing the inlet cross section is a terminal strip of the insulating curtain, preferably with suction openings.

40. Cooling rack according to claim 39, characterized in that the cross section of the suction openings is smaller than the inlet cross section.

41. Cooling rack according to one of claims 39 to 40, characterized in 'that the end strip has positive and / or positive locking means for securing the Isoliervorhanges on the air intake.

42. Cooling rack according to one of claims 38 to 41, characterized by means for controlling at least one air volume flow of the air curtain, wherein the control means is at least one electro-mechanical contact switch and / or at least one magnetic contact switch.

43. A method for operating a cooling rack with a heat exchanger and an air circuit, wherein air of the air circuit is passed through the heat exchanger and wherein condensate formed on the heat exchanger is removed from the heat exchanger, characterized in that the condensate as a means for cleaning at least one assembly of the cooling rack is being used.

44. The method according to claim 43, characterized in that the condensate is removed after use as a cleaning agent from the cooling rack.

45. A method for operating a cooling rack with at least one air curtain, with at least one curtain and at least one fan for generating at least one air curtain, characterized in that when the curtain is closed, the fan delivers a lower air flow rate and / or air mass flow than when the curtain is open.

46. The method according to claim 45, characterized in that the power of the fan is controlled via at least one electro-mechanical and / or at least one magnetic con tact age, which is controlled by the insulating curtain.