EP1334676A2 - Refrigerated display shelf for displaying and cooling goods placed in a cooling chamber - Google Patents

Abstract

The cabinet has in the back wall (14) several outlet orifices (16) which guide the or each cooling air streams (18) with a vertical direction component (24) inclined upwards towards the underneath (26) of the horizontal shelf face (20). The back wall can have a flat surface profiled structure with the outlet orifices set in wall sections of the profiled structure which itself is directed inclined up or down.

Description

The invention relates to a refrigerator, such as a refrigerated shelf, preferred for installation in a sales room, for presentation and Cooling of recorded in a refrigerator of the refrigerator Goods, with a rear space limiting the refrigerator, in essentially vertically aligned rear wall, the Rear wall one or more or a variety if necessary over the Rear wall has distributed outlet openings through which one or more flows of cooling air enter the cold room, with one or more shelves in the cold room are included or attached, if necessary with a floor area and with or without a ceiling area.

From EP 1 084 666 A1 is a cooling shelf with the entry Known features known, which several on top of each other arranged shelves. The cooling air exits Exit openings through a rear wall. Everyone The shelf is on the front with an air barrier Mistake. The shelves are for removing goods Can be pulled out like a drawer. Figures 1 and 2 that publication contain an arrow, the However, the description does not show whether this is the Flow direction should indicate.

A refrigerator is known from EP 0 651 216 A1, in which an intermediate wall is provided from which vertically downwards directed cooling air flows emerge. Furthermore is in the area of the air outlet holes of each partition Baffle provided.

EP 0 899 524 A2 discloses a refrigerator unit in which Air baffles are provided, which either the cooling air diagonally upwards or diagonally downwards or horizontally allow the cooling air duct to exit into the cold room. This Air baffles are periodic by means of a motor adjustable so that the exit angle of the cooling air flows periodically can be varied periodically from the cooling air duct.

EP 0 593 212 A1 discloses a refrigerated cabinet in which Cooling air flows horizontally from the rear wall and vertically emerge from an upper wall.

DE 37 03 126 A1 deals with a plate element for Cooling towers, this plate element also through a track made of plastic material with a large number of openings formed and preferred a network structure for the Plate element is provided. The plate material can Trapezoidal structure, groove structure or even a flat structure have.

Another refrigerator is for example from DE 199 14 769 A1 known. This refrigerator has a Air circulation system for cold air, with a cold room or the goods arranged on shelves be cooled by means of cooling air flows. Furthermore is at a cold air curtain on this refrigerator, which is open at the front provided that extends along the open front of the upper end wall to a lower end wall extends and for thermal insulation of the goods or the refrigerator to the ambient air should worry. Main aspect of that in DE 199 14 769 A1 However, the refrigerated cabinet described is a warm air supply system, which has a fan on the refrigerator, with warm air near the front of the refrigerator the floor is blown out of the refrigerator. Through this The measure is intended to close the sales area especially near the Be warmed up so that the near the Customers are not too cold, especially in the area of the legs and feet. In this known refrigerated cabinet, the shelf surfaces are starting from the back to the front diagonally down against the Horizontal inclined arranged in the cold room. The Cooling air flows out of the outlet openings of the rear wall essentially in the horizontal direction.

A disadvantage of these known refrigerators is that they are on Goods closest to the shelf surfaces of the rear wall within the cold room of the refrigerator directly from the Cooling air is blown in while the farther forward Goods placed on the front of the refrigerator are less chilled become. This effect is reinforced by the fact that the refrigerated cabinet according to the prior art, the shelves are inclined in the cold room. There is also at refrigerators of this type, which also include a Have cooling air curtains in the area of the open front, that for thermal insulation of the cold room from the Ambient air should worry about this front cooling air curtain strives to the inside of the refrigerator compartment. This effect is on it attributed to that in the cold room and the outside There are temperature-related pressure differences in the surrounding area. This irregular incidence of the Cooling air curtain in the cold room does not lead to one continuous and spatially inhomogeneous cooling of the Cold room or the one in it, for example Shelf space positioned goods.

In contrast, the present invention has the object based, a refrigerator of the type mentioned in this regard to further develop that spatially more homogeneous Temperature distribution within the cold room of the refrigerator given a simple construction. According to one the secondary aspect should also be that of the refrigeration cabinet alternatively, for example instead of doors front cooling air curtains are stabilized so that the Problem of the cooling air curtain falling into the cold room of the refrigerator is largely avoided.

The main object of the invention is in the refrigerator essentially solved in that the Outlet openings of the rear wall or the cooling air flows with a vertical directional component obliquely upwards against the bottom of the substantially horizontal or slanted shelf space or the Head the end wall. Because of this measure, Advantage achieved from the back wall emerging cooling air flows obliquely upwards against the Underside of the respective shelf surface or the - if available - upper end wall for the cold room inflow and then down from there to the ones to be cooled Goods are redirected. Because of this measure is in essentially an influx of goods from the or Cooling air flows reached from above, so that there is a total Uniformization or homogenization of the Temperature distribution within the cold room of the refrigerator results. In this respect, it is also essentially excluded that the the outlet openings for the cooling air flows Do not freeze the closest arranged goods, as these Were not essentially horizontal aligned cooling air flow can be flowed directly.

According to a first advantageous embodiment of the invention it is provided that the outlet openings or the Cooling air flows at an angle, preferably at an angle of greater than approximately 30 °, preferably approximately 40 to 80 °, in particular approximately 50 up to 60 °, in relation to the horizontal, lead diagonally upwards. As practical tests have shown, these can be Conditions of substantial homogenization and Uniform distribution of the temperature inside the refrigerator Achieve refrigerated cabinets.

One way of realizing such cooling air flows, which is directed obliquely upwards into the refrigerator of the Entering the refrigerator from the rear wall is that the Rear wall a flat profile structure, preferably with one itself in the vertical and / or horizontal direction repeating, preferably regular profile pattern. The flat profile structure can preferably be a wave structure, Trapezoidal structure, triangular structure, honeycomb structure or one Combination of one or more of these or similar Structures. Such, especially flat Profile structures are easy to manufacture manufacture, so that these rear walls easily instead of common, flat rear walls can be used.

According to another advantageous embodiment of the invention it is envisaged that one or many Outlet openings in diagonally upwards or downwards Wall sections of the profile structure of the rear wall arranged are. In this respect, the entry angle of the or Cooling air flows into the refrigerator of the refrigerator essentially due to the inclination of the wall sections of the profile structure certainly. To clarify, it should be noted here that the Area normal of the respective wall sections in essentially determines the entry angle of the cooling air flows, so it lends itself to the profile structure like that train that these have sufficient wall sections the corresponding or required Has surface normals. In particular with an arrangement of the Evaporator in the rear wall area is an arrangement of the Outlet openings diagonally downwards advantageous because one better air exposure of the goods on the lower End wall, i.e. the floor display.

According to another embodiment of the invention, which in itself it can be used independently and independently provided that one or more at the bottom Shelf areas or the end wall one or several air guiding elements for directional deflection or distribution of the or from which Outlet openings of the cooling air flows emerging from the rear wall are arranged or attached. These air control elements provide for a directed redirection or distribution or division of the or air flows. The Air guiding elements can meet the respective requirements accordingly, have different geometries or sizes and thus ensure different deflection angles. Also can the air guiding elements over the transverse extension of the Refrigerated furniture or the depth of the refrigerated cabinet or the depth of the shelf areas different be designed.

The air guiding element or elements advantageously shape after one another embodiment of the invention Cooling air flows a vertically downward Directional component. Through this measure, the desired ideal situation of the flow of goods through the Cooling air flow directly from above is even better in practice be approximated.

According to another embodiment, it is provided that the Refrigerated cabinet has a substantially open front, and a cooling air curtain for thermal insulation of the cold room the open front is preferably substantially vertical or flows slightly inclined from top to bottom. Although yourself have proven such cooling air curtains in practice, As mentioned at the beginning, there is a problem with this Cooling air curtains tend to get inside the cold room to invade so that the thermal insulation is removed or is interrupted.

In so far, it offers itself extremely after another advantageous and independent embodiment of the invention that the air-guiding element or elements Cooling air flows a horizontal to the front Imprint the directional component. Because of this measure the one provided on the front of the refrigerator Cooling air curtain stabilized, in particular one The cooling air curtain falls into the interior of the cold room is counteracted. This will get them from the back wall escaping cooling air flows by means of the air guide elements also a horizontal directional component facing the front imprinted, which supports the cooling air curtain, so to speak protected from falling into the interior of the refrigerator.

In this respect, it proves to be advantageous that the Rear wall adjacent air guide elements to the cooling air flow more downward vertical directional component and the air guiding elements adjacent to the front Cooling air flow one more towards the open front Imprint the horizontal directional component. Based on these Measure will be the goods on the shelves of the cooling flow or flows substantially vertically from above flowed towards, while arranged on the edge of the shelf surfaces Air guiding elements follow the cooling air flows horizontally Imprint the external directional component, which for a dynamic stabilization of the cooling air curtain of the refrigerator to care.

The refrigerated cabinet advantageously has a lower end wall of the Cold room, an inlet being provided in this area is that via a fan and an evaporator or such refrigerant into one of the back walls leads assigned channel, at the upper end of a There is an outlet for the cooling air curtain. This channel is going if necessary into another channel in the area of the upper one End wall above, from which the front of an outlet Cooling air for the cooling air curtain emerges.

It is understood that the outlet openings of the rear wall for the cooling air according to individual requirements can be designed and arranged. So can for example, a multiplicity essentially equally distributed be provided by circular outlet openings. Also can have slot-shaped outlet openings, arranged in spaced lines or other patterns, be provided. It is only essential that the from the Cooling air escaping from the rear wall or the exiting Cooling air flows due to the obliquely upward Flow direction, especially in interaction with the Undersides of the shelf surfaces or with the Air control elements for a spatially significantly improved homogeneous cooling of the cold room or the one in it take care of goods.

According to a secondary aspect that only applies to such refrigeration units, which cannot be closed by means of a door or the like are, but via a cooling air curtain from the External environment are thermally insulated, can be used through targeted adjustment of the flow direction through the Cooling air flows entering the rear wall, for example by means of the air control elements, for stabilizing the Cooling air curtains are taken care of by passing through the back wall incoming cooling air flows with horizontal Impact directional components on the cooling air curtain.

Further goals, advantages, features and possible applications of the present invention result from the following Description of the exemplary embodiments with reference to the drawings. All of them are described and / or illustrated illustrated features for themselves or in any more meaningful Combining the subject of the present invention, too regardless of their summary in the claims or their dependency.

Figur 1

ein Ausführungsbeispiel eines erfindungsgemäßen Kühlmöbels in schematischer Darstellung, im Querschnitt,

Figuren 2a, b, c

verschiedene Ausführungsformen der Profilstruktur der Rückwand des Kühlmöbels und

Figur 3

Ausgestaltung der Luftleitelemente, welche an der Unterseite eine Regalfläche angeordnet sind.

Show it:

Figure 1

an embodiment of a refrigerator according to the invention in a schematic representation, in cross section,

Figures 2a, b, c

different embodiments of the profile structure of the rear wall of the refrigerator and

Figure 3

Design of the air guiding elements, which are arranged on the underside of a shelf surface.

The refrigerator shown in Figure 1 preferably has the Design of a refrigerated shelf 10. The cooling shelf 10 is in the Usually set up in a sales room and used for Presentation and cooling of in a cold room 12 of the Refrigerated furniture included goods.

The rear of the refrigerator 12 is through a rear wall 14 limited, which in the present embodiment in is oriented substantially vertically. The rear wall 14 has one or more or a variety of Outlet openings 16, possibly according to patterns or the same distributed on the surface of the rear wall 14 are arranged. Out one or more exit openings 16 Cooling air flows 18 into the cooling space 12, which is the cooling space 12 or cool the goods inside. There are also one or more shelves in the cold room 20 added, on which the goods are stored.

The front side 46 of the cooling shelf 10 can for example be closed by one or more doors. in the However, the present exemplary embodiment has the cooling shelf 10 an open front side 46 on which a cooling air curtain 48 for thermal insulation of the cooling space 12 preferably in flows essentially vertically from top to bottom.

During the cooling space 12 to the rear from the rear wall 14 is limited, an upper, in essentially horizontally arranged end wall 22 for the Cold room can be provided. Down the fridge is through a lower end wall 52 delimits in its area Inlet 54 for the cooling air curtain 48 or for the cooling air flows 18 entering through the rear wall 14 is provided. A fan connects to this inlet 54 56 and an evaporator 58 with which the cooled air in a channel 60 assigned to the rear wall 14 is guided. To the one can the air from this channel 60 through the Outlet openings 16 of the rear wall 14 into the cooling space 12 stream. On the other hand, this channel 60, which is in the is aligned substantially vertically in an substantially horizontally oriented channel 62 above the Continue end wall 22, then at the end of channel 62 an outlet 64 is provided from which the cooling air is formed of the cooling air curtain 48 emerges. Outside is the cooling shelf 10 of walls that form insulation 66. in the Area of the outlet 64 or the end wall 22 can be a light source or other lighting 68 be provided.

The outlet openings 16 of the rear wall are designed in this way or arranged that the or the cooling air flows 18 with a vertical directional component 24 at an angle directed against a bottom 26 of the substantially horizontally oriented shelf surface 20 or the End wall 22 are directed or directed. The Exit openings 16 direct or guide the or the Cold air flows 18 at an angle, preferably at an angle 28 (Figure 2b) of greater than about 30 °, preferably about 40 ° to about 80 °, in particular about 50 ° to about 60 ° based on the Horizontal, diagonally upwards.

The rear wall 14 preferably has a flat profile structure 30 on, in particular with a vertical and / or Repeating in the horizontal direction, if necessary regularly Tread pattern is equipped. The profile structure 30 can Wave structure 32 (FIG. 2a), a trapezoidal structure 34 (FIG 2b), a triangular structure 36 (FIG. 2c) or also one Honeycomb structure or a combination of one or more of these or similar structures.

As can be seen in FIG. 2, the outlet openings are in the wall sections 38 of the profile structure 30 arranged, the surface normal obliquely up or down approximately in the desired flow direction of the cooling air flows 18 points.

As can be seen in particular from FIG. 3, the Underside 26 of the one or more shelf surfaces 20 or the end wall 22 one or more Air guiding elements 40, 42 for directional deflection or distribution of the cooling air flow (s) 18 arranged or attached. The air guiding elements 40, 42 can have different size and shape like this for example by the dotted line of the Air guiding element 42 is arranged. The air guiding elements 40, 42 ensure that the one or more cooling air flows 18 vertically downward directional component 44 is imprinted. It is also provided that one or a plurality of the air guiding elements 40, 42 or the Cooling air flows 18 a horizontal to the front 46 Imprint directional component 50. You can do this for example, as indicated in Figure 3, in the Air guiding element 42 horizontal passages, channels or the like may be provided. It is recommended that the Rear wall adjacent air guide elements 40 to the cooling air flow 18 a more downward vertical directional component 44 and the air guiding elements 42 adjacent to the front side 46 a more horizontal towards the open front 46 Imprint directional component 50.

Overall, these measures ensure that the Temperature distribution within the cooling space 12 of the cooling shelf 10 reached, in addition with existing cooling air curtain 48 also ensure the stabilization of the cooling air curtain 48 will be carried.

LIST OF REFERENCE NUMBERS

10 -

refrigerated

12 -

refrigerator

14 -

rear wall

16 -

outlet opening

18 -

Cooling air flow

20 -

shelf space

22 -

end wall

24 -

vertical directional component

26 -

bottom

28 -

angle

30 -

profile structure

32 -

wave structure

34 -

trapezoidal structure

36 -

triangular structure

38 -

wall section

40 -

air guide

42 -

air guide

44 -

vertical directional component

46 -

front

48 -

Cooling air curtain

50 -

horizontal directional component

52 -

end wall

54 -

Inlet

56 -

Fan

58 -

Evaporator

60 -

channel

62 -

channel

64 -

outlet

66 -

insulation

68 -

lighting

Claims (10)

Refrigerated cabinets, such as refrigerated shelves (10), preferably for installation in a sales area, for presenting and cooling goods received in a refrigerated area (12) of the refrigerated cabinet, with an essentially vertically oriented rear wall (14) which limits the rear of the refrigerated area (12) , wherein the rear wall (14) has one or more or a plurality of outlet openings (16), optionally distributed over the rear wall (14), through which one or more cooling air flows (18) enter the cooling space (12), with one or more shelf surfaces (20), which are received or fastened in the cooling space (12), optionally with a floor area and with or without a ceiling area, characterized in that the outlet openings (16) of the rear wall (14) provide the cooling air flow (s) (18) with a vertical Directional component (24) directed obliquely upwards against or in the direction of the underside (26) of the essentially horizontally oriented shelf surface ( 20) or the end wall (22). Refrigerated cabinet according to claim 1, characterized in that the outlet openings (16) or the cooling air flows (18) at an angle, preferably at an angle (28) greater than approximately 30 °, preferably approximately 40 ° to 80 °, in particular approximately 50 ° up to approx. 60 °, in relation to the horizontal, lead diagonally upwards. Refrigerated cabinet according to one of the preceding claims, characterized in that the rear wall (14) has a flat profile structure (30), preferably with a possibly regular profile pattern repeating in the vertical and / or horizontal direction, such as. B. wave structure (32), trapezoidal structure (34), triangular structure (36), honeycomb structure or a combination of one or more of these or similar structures. Refrigerated cabinet according to claim 3, characterized in that the outlet openings (16) are arranged in wall sections (38) of the profile structure (30) which itself or its surface normal points obliquely upwards or downwards. Refrigerated cabinet according to one of the preceding claims, characterized in that on the underside (26) of one or more shelf surfaces (20) or the end wall (22) one or more air guiding elements (40, 42) for the directed deflection or distribution or division of the one or more the cooling air streams (18) emerging or the outlet openings (16) of the rear wall (14) are arranged or fastened. Refrigerated cabinet according to claim 5, characterized in that the one or more air guiding elements (40, 42) impress the one or more cooling air flows (18) with a vertically downward directional component (44). Refrigerated cabinet according to one of the preceding claims, characterized in that the refrigerated cabinet has a substantially open front (46), and a cooling air curtain (48) for thermal insulation of the cooling space (12) of the open front (46) preferably essentially vertically from above flows past below. Refrigerated cabinet according to one of the preceding claims 5 to 7, characterized in that the one or more air guiding elements (40, 42) impart to the one or more cooling air flows (18) a horizontal directional component (50) pointing towards the front (46). Refrigerated cabinet according to one of the preceding claims 5 to 8, characterized in that the air guide elements (40) adjacent to the rear wall (14) of the cooling air flow (18) have a more downward vertical directional component (44) and those adjacent to the front side (46) 42) impress a horizontal directional component (50) pointing more towards the open front side (46). Refrigerated cabinet according to one of the preceding claims, characterized by an inlet (54) arranged in the region of a lower end wall (52) of the cooling space (12), which via a fan (56) and an evaporator (58) into one of the rear wall (14) Channel (16) leads, which optionally merges into a further channel (62) in the area of the upper end wall (22), the cooling air for the cooling air curtain (48) possibly emerging from an outlet (64) on the front.

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