EP2609380B1 - Refrigerating furniture - Google Patents

Description

The invention relates to a refrigerated cabinet according to claim 1.

Out DE 102 05 621 A1 . DE 102 05 622 A1 . DE 20 2004 013 901 U . DE 20 2005 011 812 U1 . DE 202 02 060 U1 and DE 201 19 300 U1 Cooling shelves are already known for the presentation and cooling of goods.

Out DE 30 46 296 A1 For example, a method and apparatus for improving the energy balance of refrigeration plants is known. For this purpose, the waste heat of the cooling unit is discharged to the outside air or to a hot water heater. In front of an air condenser of the cooling unit, a heat exchanger is switched on, which is connected via a secondary radiator circulation system with an external cooler and / or a heating coil of a water storage.

Out DE 297 23 977 U1 is a cooling device for the household with a coolable by a refrigerator storage space known, the waste heat of the refrigerator for heating domestic water is supplied to a hot water tank.

Also, an arrangement of several refrigerated shelves is already known, wherein the refrigerated shelves are connected to a central refrigeration supply device. In the known arrangement, a refrigerant is transported through laid in the ground, so stationary pipelines. This arrangement has a number of disadvantages. On the one hand, at the installation site, for example in a supermarket, pipelines must first be laid.

Following this, connect each refrigerated rack to the piping. These pipe connections are a common source of error and lead to leaks, which can leak environmentally harmful, expensive and the function of the equipment again and again to be replaced refrigerant. On the other hand, a significant disadvantage is that the operation of the entire arrangement of all refrigerated shelves fails when the central refrigeration supply device or even a single cooling shelf fails.

From the FR 2672114 A1 describes a refrigeration system that generates cooling centrally and conducts the refrigerant via lines to the individual refrigerated shelves. The condenser (11) of the refrigeration system is arranged outside the refrigerated shelf on an upper cover. From the US 2004/0031280 A1 a refrigerated shelf is known in which a compressor (42) and a condenser (44) outside the refrigerated shelf on an upper cover and an evaporator (40) is arranged in the lower horizontal functional space.

Other refrigerated cabinets are out DE 199 06 742 A1 . JP 58 019678 A and WO 2006 / 087007A1 known.

DE 199 06 742 A1 discloses a refrigerated cabinet, in particular a plug-in refrigerated shelf with back wall condenser, which is arranged on the outside of the rear wall of the refrigerator. In the lower floor area, a compressor is arranged.

WO 2006 / 087007A1 discloses a refrigerated cabinet having in its bottom portion a unit in which a compressor and a fluid-gas heat exchanger is arranged. The unit is designed in such a way that it can be removed from the refrigerated cabinet.

JP 58 019678 discloses a Refrigerating Showcase having in its bottom portion a compressor 6 with a removable heat shield 12.

The arrangement of the compressor and the condenser outside the actual cooling rack requires special effort in packaging at the place of manufacture and leads to a relatively large volume of the packaged cooling rack. This results in increased transport costs for transport from the production to the place of use.

Furthermore, this arrangement of the compressor and the condenser leads to their contamination. A dust accumulation on the compressor outside causes isolation from the outside air and causes a poorer heat dissipation to the environment. As a result, the compressor heats up more and consumes more energy. For reasons of hygiene, said contamination is to be continually eliminated during operation and also prior to maintenance work, which leads to additional expense and costs.

Furthermore, there are noise and vibration emissions, both when switching on and off the compressor, but also during operation, which are perceived by users as disturbing.

Finally, the height of the cooling rack is increased by the arrangement of the compressor and condenser in the upper outer region of the cooling rack.

EP 1 780 485 A1 discloses a refrigerated cabinet consisting of two parts, a cabinet and a refrigerating module of substantially equal size. Both parts are connected together in case of operation and can be separated in case of an error. A compressor and a condenser are arranged in a closed unit in the refrigerating module. The well-known two-piece refrigerator is mechanically complex.

Based on this prior art, the present invention seeks to provide a refrigerated cabinet of the type mentioned with improved properties.

This object is achieved by the characterizing features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention is associated with a plurality of advantages.

The arrangement of the compressor in the lower region within the cooling rack and the condenser above at least partially within the refrigerated shelf facilitates the packaging and transport of the refrigerated shelf, since no special effort in packaging at the place of manufacture is necessary and leads to a relatively small volume of the packaged refrigerated shelves. This results in no increased transport costs for transport from the production to the place of use.

Furthermore, this arrangement of the compressor and the condenser leads to no pollution. This prevents dust accumulation on the outside of the compressor and thus also no insulation from the outside air. The heat output of the compressor to the environment is not affected, so that the energy consumption of the compressor is optimized. Cleaning work accounts, which has the advantage that additional effort and corresponding costs do not arise.

By arranging the condenser in an upper subspace of the refrigerated cabinet maintenance work on the cooling rack individual cooling devices can be performed from the front, without necessarily goods (refrigerated goods) is discharged from the refrigerator. The maintenance work can be carried out by a fitter, without the assistance of auxiliary persons for additional work (unloading of refrigerated goods, etc.) or to carry out this work himself.

By arranging the compressor in the refrigerator according to the invention maintenance can be carried out in a simple manner from the front.

For this purpose, air outlet elements are released or unhooked from the cooling rack; Thus, the now exposed compressor housing can be solved and removed from the housing outer wall, so that the work can be done directly on the refrigeration system and the compressor without removing it from the cooling rack.

By placing the condenser in a condenser compartment, the advantage is achieved that the condenser in the condenser compartment is protected against damage and, in addition, that the dimensions of the cooling unit are optimized. This facilitates the packaging and transport of the refrigerated cabinet and results in a comparatively small volume of the packaged refrigerated shelf. This results in no increased transport costs for transport from the production to the place of use.

With the detachable connection of the condenser compartment has the advantage that in case of maintenance, the condenser compartment as a whole with condenser, filter element, obturator, pressure sensor and control element with the respective piping can be easily removed.

With the assignment of a arranged in the refrigerator compressor housing to the compressor, the advantage is achieved that the cooling space of the refrigerator furniture is thermally and acoustically optimized; In particular, a noticeable reduction of disturbing noise and vibration emissions is achieved.

With the detachable connection of the compressor housing with the cooling furniture, the advantage is achieved that the compressor housing can be solved and thus direct maintenance work on the compressor or the piping can be performed without removing the compressor from the cooling rack.

This advantage is also achieved by the fact that the compressor is accessible via the refrigerator.

Advantageous embodiments of the inventive refrigerated cabinet are characterized in that, on the one hand, the condenser is thermally and / or acoustically isolated from the refrigerator compartment and / or, on the other hand, the compressor is thermally and / or acoustically insulated from the refrigerator compartment. This provides the benefits of improved efficiency and reduced noise and vibration emissions.

A further advantageous embodiment of the inventive refrigerated cabinet is characterized in that the refrigerated cabinet has a rear wall, and that the rear wall in the region of the compressor has at least one air outlet element. This provides the advantage that the compressor is cooled by a natural exchange of air with the outside air.

A further advantageous embodiment of the refrigerator according to the invention is characterized in that the compressor is a ("third") blower device to the Cooling is assigned. This achieves the advantage that the compressor is cooled by the outside air sucked into the compressor compartment by the third blower device. This prevents heating which would reduce both the efficiency of the cooling operation and the life of the compressor.

A further advantageous embodiment of the refrigerating appliance according to the invention is characterized in that a regulating element is arranged in the condenser compartment, which regulates a secondary circulating medium (for example brine) passed through the condenser. This improves the efficiency of the heat exchange.

A further advantageous embodiment of the refrigerated cabinet according to the invention is characterized in that a controller is arranged in a housing module, and that the housing module with the cooling cabinet is detachably connectable. As a result, the advantage is achieved that in the case of maintenance, the control can be easily replaced and the actual control circuit is protected from contamination.

A further advantageous embodiment of the inventive refrigerated cabinet is characterized in that the condenser compartment is assigned a first insulating medium, which consists of an insulating material, preferably based on synthetic rubber and / or a similar insulating material. This provides the advantage that the condenser compartment is thermally isolated from the cooled air.

A further advantageous embodiment of the refrigerated cabinet according to the invention is characterized in that the compressor, in particular the compressor housing, a second isolation medium is assigned, which is also preferably based on synthetic rubber and / or a similar insulating material. This provides the advantage that the compressor is thermally and acoustically isolated from the refrigerator.

An advantageous embodiment of the cooling rack according to the invention is characterized in that the cooling rack and at least one further cooling rack each have a cooling rack individual cooling device, and that the cooling rack individual Cooling devices have lines with which the cooling rack individual cooling devices can be connected to each other and / or at least one heat exchanger and in which media of different temperatures are transported.

This achieves a number of advantages.

Firstly, no pipelines are to be laid at the installation site. On the other hand, the operation of an arrangement of two or more refrigerated shelves according to the invention does not fail even if a single refrigerated shelf of the arrangement should fail, all other refrigerated shelves continue to operate unrestricted. Each individual refrigerated shelf contains a complete, all-thermal refrigeration system and is thus independent of other refrigerated shelves in the network.

A central refrigeration device and thus a refrigeration piping from such a central device to the individual refrigerated shelves of the arrangement omitted.

At the installation site, the cooling furniture according to the invention is merely to be connected to an electrical power connection and lines arranged on the refrigerator, which serve to transport one or two different coolant media are to be connected with corresponding pipes of another cabinet and the heat exchanger or with the lines of two adjacent refrigeration units.

This installation (insertion of a plug into a socket, screwing of pipes) can be made by laymen, a refrigeration expert is not required for this, so that the inventive "plug-in" cooling shelf is characterized by relatively low installation costs.

A further advantageous embodiment of the cooling rack according to the invention is characterized in that the cooling rack and the further cooling rack are connected to exactly one common heat exchanger. This has the advantage that only one heat exchanger is provided for an arrangement of two or more cooling shelves according to the invention.

A further advantageous embodiment of the refrigerated shelf according to the invention is characterized by the advantage of a modular design: the refrigerated shelf according to the invention can be integrated both in an arrangement with only one refrigerated shelf and in an arrangement with multiple shelves, with a single cooling rack either connected directly to a heat exchanger is or indirectly connected to the heat exchanger via a further cooling rack or more cooling shelves.

The modular design makes it possible to change the arrangement in a simple manner. For example, as part of the heat exchange capacity, additional cooling shelves can be integrated in an arrangement; It is possible to replace individual refrigerated shelves, finally, for example, in times of lower demand and individual refrigerated shelves can be removed or deactivated.

Preferably, the line connections are identical, so that connection-identical cooling modules are created, which can be connected together in a simple manner to form an overall arrangement.

A further advantageous embodiment of the cooling rack according to the invention is characterized in that the cooling rack and the further cooling rack are connected to a common - central - heat exchanger and / or with a device (HZ), which emits heat to the environment.

The heat generated in the cooling rack or in the cooling device can thus be used in different ways: with the abovementioned device, the room temperature at the installation site can be purposefully increased if necessary.

Preferred embodiments of the cooling rack according to the invention will now be described with reference to the drawing.

Figur 1

eine perspektivische Ansicht eines Kühlregals,

Figur 2

das Kühlregal nach Figur 1 mit Komponenten und deren Zusammenwirken

Figur 3

eine erste, serielle Anordnung mehrerer Kühlregale nach Figur 1, und

Figur 4

eine zweite, parallele Anordnung mehrerer Kühlregale nach Figur 1.

Figur 5

das Kühlregal nach Figur 1 mit einem zusätzlichem Verflüssigerabteil,

Figur 6

das Kühlregal nach Figur 1 mit zusätzlichem Verflüssigerabteil und einem Abdeckelement,

Figur 7

das Kühlregal KR1 als Detail der Figur 5 mit dem Schnitt des oberen Bereichs, und

Figur 8

eine Draufsicht auf das Kühlregal nach Figur 1 mit einer Steuerung und einem Verflüssigerabteil.

It shows

FIG. 1

a perspective view of a refrigerated shelf,

FIG. 2

the cooling shelf after FIG. 1 with components and their interaction

FIG. 3

a first, serial arrangement of several refrigerated shelves FIG. 1 , and

FIG. 4

a second, parallel arrangement of several refrigerated shelves FIG. 1 ,

FIG. 5

the cooling shelf after FIG. 1 with an additional condenser compartment,

FIG. 6

the cooling shelf after FIG. 1 with additional condenser compartment and a cover element,

FIG. 7

the cooling rack KR1 as a detail of FIG. 5 with the section of the upper area, and

FIG. 8

a plan view of the refrigerator after FIG. 1 with a control and a condenser compartment.

FIG. 1 shows an embodiment of a cooling rack KR1 in a perspective view. The cooling rack KR1 is designed substantially cuboid; it is open on one side, the front, while it is closed at its back, at its bottom, at its top, and at its left and right sides. On his right is a in the FIG. 1 shown dark vertical side wall element, which is formed detachable. In cooling mode, the cooling shelf is open at least on one side; the refrigerated goods are thus freely accessible in the cooling mode. The refrigerated shelf can be equipped with at least one detachable sidewall element and / or with at least one detachable front sidewall element.

For the storage of refrigerated goods (especially perishable goods such as food, cosmetics, medicines) are in the in FIG. 1 illustrated example in a cooling space (goods receiving space) KR1M three horizontally mounted shelf elements RE1, RE2 and RE3 and the surface RE4 provided at the bottom of the cooling rack. The area RE4 is approximately at the same height as the (lower) loading edge LK. The loading edge LK is due to the special design of the cooling rack, which will be described, advantageously only a few inches above the footprint of the cooling rack and thus allows to expand the cooling chamber in the lower portion of the cooling rack and thus to maximize.

Other structural embodiments of the cooling rack are in the Figures 2 and 3 shown.

FIG. 2 shows an embodiment of the cooling rack KR1, which is connected via two lines KR1L1, KR1L2 (in particular hoses, possibly piping) with an external heat exchanger WT / HZ. With this external, central heat exchanger, further cooling racks (KR2, ..., KRN in FIG. 3 ) connectable.

At the in FIG. 2 illustrated embodiment, the cooling rack KR1 and the heat exchanger WT are located at two different locations, which are separated by a room divider or a wall WD. However, the heat exchanger WT can be arranged in the immediate vicinity of the cooling rack KR1, for example on its upper side.

This in FIG. 2 shown in section embodiment of a cooling rack according to the invention KR1 has a cooling space KR1M, in FIG. 2 without the in FIG. 1 Shelf elements RE1, RE2 and RE3 shown as an example is shown.

Between the cold room and the back of the refrigerator there is a room ("functional or engine room") FR. At the in FIG. 2 illustrated embodiment, the functional space FR a vertical subspace VR and an upper and a lower horizontal subspace HR1, HR2. Said subspaces HR2, VR, HR1 form a channel for cooled air KL and for heated air WL.

In the lower region of the vertical subspace VR, a compressor KOM is arranged and in the upper region of the vertical subspace VR an evaporator VERD is arranged. On the outside of the rear wall of the cooling rack KR1 is a condenser VF, which is connected to the heat exchanger WT / HZ via two pipes KR1L1 and KR1L2. In the pipeline KR1L1, a first medium M1, in particular water with a glycol additive, is led from the (cooling) outlet of the heat exchanger to the condenser VF. In contrast, in the pipeline KR1L2 a second medium M2, which may be equal to the first medium M1, led from the condenser VF to the (heat) input of the heat exchanger. The medium M1 typically has a temperature T1 in the range of about 10 ° to about 55 ° Celsius, while the medium M2 typically has a temperature T2 in the range of about 15 ° to 60 ° Celsius.

Line connections of the two lines KR1L1 and KR1L2 and corresponding line connections to corresponding lines of the heat exchanger WT / HZ are in FIG. 3 shown.

The compressor KOM is connected to an electrical power connection NA via an electric cable.

In the wall surface defining the cooling space KR1M and the function space FR, a plurality of openings are provided, through which cooled air KL flows into the cooling space KR1M. Cooled air KL also flows through the upper horizontal subspace HR2 to an air outlet LA at the front of the refrigerated shelf (left in the sectional view in FIG FIG. 2 ).

At the front of the refrigerated rack KR1 (left in the sectional view in FIG. 2 ) is located at the air outlet LA, a first fan device VT1, in particular a fan, which leads the cooled air KL in the cooling space KR1M. The blower device VT1 forms a cooling air curtain between upper and lower portions of the cooling rack. This cooling air curtain forms a thermal insulation of the cooling chamber relative to the ambient air. The cooled air discharged by the blower device can also be directed specifically to each region of the cooling space and in particular to the area provided for the storage of the cooling goods.

Alternatively to the in FIG. 2 In the embodiment shown, the first blower device can be arranged in the rear region of the cooling rack, there in the functional space FR. The blower device can also be arranged below the evaporator VERD and thus cause a compression of the air through the evaporator. Will the blower device, unlike in FIG. 2 shown, located above the evaporator, air is sucked through the evaporator. The guide device, in particular a metal sheet, which is arranged at least from the upper edge of the evaporator VERD downwards in the direction of the interior space up to the height of the loading edge, causes cold to fall on the rear wall of the cooling space. The guide (sheet metal) separates warm and cooled air. This guide causes cooled air to pass through the slotted rear wall, which is provided with openings or slits, into the cooling space, even below the evaporator.

The aforementioned cooling air curtain forms a thermal insulation of the cooling chamber relative to the ambient air. The cooled air discharged from the first blower device can be directed to each area of the cold room and in particular to the area provided for the storage of the refrigerated goods.

At the front of the cooling area KR1 is located in the lower region at the loading edge LK an air inlet LE and a second blower device VT2, in particular a fan. This sucks for a cooled air, after their way or after warming in the refrigerator, on ("warm air WL"). On the other hand, it sucks in cooled air, which undesirably gets in front of the cooling rack in the lower area. The sucked air is guided into the lower subspace HR2 of the functional space FR and into the vertical subspace VR of the functional space FR.

It is achieved with the second blower device VT2 that at best a small amount of cooled air exits the cooling space and reaches the area below in front of the cooling space.

Unlike in FIG. 2 illustrated, the second blower device may also be arranged in the rear region of the cooling rack, there in both the lower and in the upper region.

It can also be provided that the cooled air, after its way or after warming up in the cooling space ("warm air WL"), is guided through a negative pressure into the air inlet LE; In this respect, the second blower device VT2 is unnecessary.

As already in connection with FIG. 1 described, the loading edge LK is advantageously only a few inches above the footprint of the cooling rack. This is achieved in that no component of the cooling rack-specific cooling device (evaporator, condenser, compressor) is provided in the lower subspace HR2 below the cooling space KR1M.

The lower subspace HR2 is used only as a channel for the heated air WL; the cooling device including evaporator, is opposite to in FIG. 2 illustrated embodiment disposed outside the cooling rack, in particular, the cooling device (evaporator, condenser, compressor) is arranged above the cooling rack or on a non-open side of the cooling rack.

Thus, the cold room is extended to the lower portion of the cooling rack and thus maximized.

FIG. 3 shows a schematic representation of an arrangement of a plurality of serially connected cooling racks KR1, ..., KRN, which are connected to a common (central) heat exchanger WT / HZ. The individual cooling racks KR1, ..., KRN can be arranged directly adjacent to one another at the installation location, ie without an intermediate spacing, or alternatively with an intermediate spacing.

The refrigerated shelves KR1, ..., KRN are connected in series: the failure of a refrigerated shelf, e.g. KR4, does not lead to the failure of the refrigerated shelves KR1, KR2, KR3, KR5, ..., KRN; the lines of a failed cooling rack allow even after the failure continues to transport the media M1, M2 between the heat exchanger and the non-failed refrigerators, in one direction.

Each refrigerated shelf (e.g., KR1) has a refrigerated shelf individual refrigerator (e.g., KR1KE with evaporator VERD, condenser VF, compressor COM)) having a first line KR1L1 and a second line KR1L2. At the ends of the lines KR1L1, KR1L2 there are line connections KR1L11, KR1L12; KR1L21, KR1L22 corresponding to line terminals (WTL1, WTL2, KR2L11, KR2L21) of units (e.g., WT / HZ, KR2) adjacent to the respective refrigerated rack (here: KR1) in the arrangement. The line connections are in particular identical, for example so-called quick-release couplings.

• Die kühlregalinterne Kühleinrichtung KR1KE ist mit einer ersten Leitung KR1L1 zum Transport eines ersten Mediums M1, das eine Temperatur T1 eines ersten Temperaturbereichs aufweist, und zum Anschluss an den Wärmetauscher WT verbunden;
• die kühlregalinterne Kühleinrichtung KR1KE ist weiterhin mit einer zweiten Leitung KR1L2 zum Transport eines zweiten Mediums M2, das eine Temperatur T2 eines zweiten Temperaturbereichs aufweist, und zum Anschluss an den Wärmetauscher WT verbunden;
• die erste Leitung KR1L1 weist einen ersten Leitungsanschluss KR1L11 auf, der mit einem Leitungsanschluss WTL1 des Wärmetauschers WT und/oder mit einem ersten Leitungsanschluß KR2L11 eines weiteren Kühlregals KR2 korrespondiert,
• die erste Leitung KR1L1 weist darüber hinaus einen zweiten Leitungsanschluss KR1L12 auf, der mit einem zweiten Leitungsanschluss KR2L12 des weiteren Kühlregals KR2 korrespondiert,

weiterhin weist die zweite Leitung KR1L2 einen ersten Leitungsanschluss KR1L21 auf, der mit einem Leitungsanschluss WTL2 des Wärmetauschers WT und/oder mit einem ersten Leitungsanschluss KR2L21 des weiteren Kühlregals KR2 korrespondiert.The refrigerator KR1 is thus configured in the following manner:

• The cooling-rack-internal cooling device KR1KE is connected to a first line KR1L1 for transporting a first medium M1, which has a temperature T1 of a first temperature range, and for connection to the heat exchanger WT;
• the refrigeration cabinet-internal cooling device KR1KE is further connected to a second line KR1L2 for conveying a second medium M2, which has a temperature T2 of a second temperature range, and for connection to the heat exchanger WT;
• the first line KR1L1 has a first line connection KR1L11, which corresponds to a line connection WTL1 of the heat exchanger WT and / or to a first line connection KR2L11 of a further cooling rack KR2,
• the first line KR1L1 furthermore has a second line connection KR1L12, which corresponds to a second line connection KR2L12 of the further cooling shelf KR2,

Furthermore, the second line KR1L2 has a first line connection KR1L21, which corresponds to a line connection WTL2 of the heat exchanger WT and / or to a first line connection KR2L21 of the further cooling rack KR2.

Finally, the second line KR1L2 has a second line connection KR1L22, which corresponds to a second line connection KR2L21 of the further cooling rack KR2.

FIG. 4 shows a schematic representation of an arrangement of several parallel connected cooling racks KR1, ..., KRN, which are connected to a common (central) heat exchanger WT / HZ.

In this arrangement, the "first" line and the "second" line of the condenser "only" has a line connection, to a continuous line leading to the heat exchanger.

The illustrated refrigerated shelves KR1, ..., KRN dissipate the heat energy via the condenser VF1, ..., VFN connected in parallel. As a control variable in particular the condensing pressure in the respective refrigeration cycle (primary circuit) is used. In the primary circuit, the condensing pressure is kept almost constant, depending on the medium (brine) temperature. In a secondary circuit, which includes the heat-dissipating portion of the heat exchanger, energy is released and by means of a control valve, the flow is regulated. The controlled variable in the secondary circuit is in turn the condensing pressure. The volume flow in the control valve is regulated. The heat energy is used via the common (central) heat dissipation.

Closing valves are preferably provided on the heat exchanger which, in the event of servicing, make it possible to close the heat-dissipating area in order to keep the brine medium in the heat exchanger during service.

The illustrated parallel circuit is characterized by the advantage that in case of failure of a refrigerated cabinet, the Kühlmittelflußverhalten from or to the heat exchanger practically unchanged from the "non-failure". The coolant flows in this parallel Arrangement - in contrast to the serial arrangement according to FIG. 3 - not in a row, so not "in series" by several condenser several refrigerated cabinets.

A cooling rack individual cooling device KR1KE can be used in the arrangements according to FIGS Figures 3 and 4 be associated with at least two refrigerated shelves KR1, KR2.

FIG. 5 shows an embodiment of the cooling rack KR1 according to the invention in section. This has a condenser compartment VFA in the upper horizontal subspace HR1 and a compressor compartment KOA in the lower vertical subspace VR. The condenser compartment VFA is located at least partially, possibly also in the upper compartment HR1. In the front, upper outer area AB is the controller ST of the refrigerator, which is preferably arranged in a housing module, which is detachably connectable to the cooling rack. The housing module can thus be separated from the cooling shelf during transport of the refrigerated shelf from the production to the place of use, where it is introduced at the place of use in the cooling rack and thus electrically connected thereto.

In the vertical subspace VR is on the one hand, a portion of the evaporator VF, which is also located in the horizontal subspace HR1, and on the other hand the compressor compartment KOA with a compressor housing KOMG and a second isolation medium ISO2, the associated compressor COM and at least one air outlet element LAE.

The compressor compartment KOA, located in the lower part of the vertical subspace VR of the cooling rack KR1. The compressor compartment KOA consists of the compressor housing KOMG, which is connected to a lower housing outer wall GAO and a rear rear wall RW of the cooling rack. It picks up the compressor KOM; the rear wall has at least one air outlet element LAE in the region of the compressor KOM.

The Kompresorgehäuse KOMG is detachably connected to the cooling rack; if this is removed, the compressor COM is accessible from the front via the refrigerator KR1M. The shelf elements RE1 ( FIG. 1 ) and the air outlet elements LAAE ( FIG. 1 ) are detached from the refrigerated rack KR1, the exposed compressor casing KOMG is released and removed from the lower casing outer wall GAO and the rear wall RW, so that work can be performed directly on the refrigeration system and on the compressor without having to remove the apparatus from the composite.

Refrigerant lines KML lead from the compressor KOM through the compressor housing KOMG via line feedthrough LTD, in the direction of the upstream evaporator VD and condenser VF. The compressor housing KOMG prevents the thermal exchange of outside air AL and heated air WL.

The second insulating medium ISO2 thermally and acoustically isolates the compressor KOM from the refrigerator KR1M; it has the task of thermally isolating heated air WL and outside air AL from each other, in addition to the compressor housing KOMG. The second insulating medium ISO2 is, for example, attached to the top and front, inside the compressor housing KOMG. For example, the insulating medium ISO2, from at least one self-adhesive foam element and / or or at least one insulating panel consist.

In a further embodiment, the compressor housing KOMG can be equipped with an insulating coating, partially or in total, inside or outside. Thus, the compressor housing KOMG and the second insulation medium ISO2 form a structural unit.

Compressor KOM is attached to the lower housing outer wall GAO. The air outlet element LAE is designed in the form of a cover element with outlet openings, which represents the completion of the compressor housing KOMG on the rear wall RW of the cooling rack KR1.

For cooling the compressor KOM, a third blower device VT3 can additionally be arranged inside or outside the cooling rack. Optionally, the cooling rack can be configured without the aforementioned air outlet element LAE.

By the compressor housing KOMG and the second insulating medium ISO2 sound emissions of the compressor KOM are attenuated and back towards the rear wall RW (or wall WD in FIG. 2 ), resulting in a noticeable reduction of the sound development in the direction of the user (open access area of the cooling rack, left in FIG. 5 ) leads.

The condenser compartment VFA is located at least partially in the upper horizontal compartment HR1. It consists of a condenser VFG the condenser VF, in particular a plate or shell and tube heat exchanger, refrigerant lines KML in liquid communication with the evaporator VF, the compressor KOM is called a primary circuit PK.

The condenser VF is in thermal communication with a secondary circuit SK. This comprises a first line KR1L1 with a control element RE, the secondary circuit medium (eg brine-liquid) to the heat exchanger WT / HZ ( FIG. 2 ), and a second line KR1L2 (in FIG. 5 not shown, see also the arrow to the right), which returns the secondary circuit medium to the condenser VF.

The condenser compartment VFA and the condenser housing VFG introduced into the upper horizontal subspace HR1 are designed as described above for the compressor housing KOMG and prevent the thermal communication between outside air AL and the cooled air KL.

The air duct for cooling the refrigerator KR1M was already based on FIG. 2 described.

The shape of the condenser housing VFG is in the in FIG. 5 illustrated embodiment, leads, however, the Verflüssigerabteil VFA can also be configured in other forms.

The condenser compartment VFA is, for example, incorporated into an existing insulation element ISOE, in particular a sandwich panel, with a first insulation medium ISO1, as still based on FIG. 7 is described. It can be configured as an independent condenser housing VFG, in particular of a tub bent from steel sheet, which is integrated or inserted into an insulation element ISOE. In particular, the entire insulation element ISOE can be manufactured with the condenser compartment VFA as one component. The first insulation medium ISO1, which is located in the condenser compartment VFA, is integrated in the component and does not need to be additionally inserted.

The controller ST of the cooling rack communicates with the cooling rack individual cooling devices KR1KE in the primary circuit PK, in particular the compressor KOM, a first fan device VT1, the control valve RV, control element RE and the pressure sensor DA2, which measures the condensing pressure and arranged in the suction region of the compressor KOM pressure sensor DA1 , which measures the pressure at the intake manifold.

The control element RE arranged in the secondary circuit SK after the condenser VF regulates the flow of the so-called secondary circuit medium, which in particular is a brine, through the condenser VF. The control of the control element RE via the condensing pressure in the primary circuit PK. The control element RE can be controlled mechanically or electrically via the pressure sensor DA2 and the controller ST and leads via the first line KR1L1 to the heat exchanger WT / HZ (FIG. FIG. 2 ) and via the second line KR1L2 back to the condenser VF.

At the in FIG. 6 illustrated embodiment is a variant of the first cooling rack KR1 after FIG. 5 and not the subject of the present invention. Unlike the embodiment according to FIG. 5 the condenser compartment VFA is protected from dust and dirt with a cover element AE. The condenser VF and other cooling rack individual cooling devices KR1KE are likewise arranged at least partially in the upper horizontal subspace HR1 and protected by the cover element AE. The cover member AE is in particular as a cover, one or more parts, in a different shape and designed so that it has a covering surface which is larger than the surface of the condenser compartment VFA. It can be fastened in particular releasably by means of screws on the first insulating element ISO1.

The cover member AE can also cover the controller ST at the same time; Alternatively, another, in FIG. 6 not shown cover can be provided, which covers only the controller ST. The Abdecklelement AE has, for example, additional openings that allow an exchange of air between Verflüssigerabteil VFA and outdoor area AB.

The condenser VF is designed, for example, as a plate heat exchanger. In the primary circuit PK, a collector KOL is additionally installed. The refrigerant passes from the upper horizontal compartment HR1 to the collector KOL. This collector KOL is formed as a container with top and bottom openings connected to the refrigerant lines KML1 and KML2. The collector KOL is connected through an upper opening with the refrigerant line KML1 and from below with a refrigerant line KML2 protruding into the collector KOL.

This collector KOL is acted upon by the refrigerant KM and jams the refrigerant KM as a kind of buffer until it reaches the height of the top edge OBK of the coolant line KML2 projecting into the collector KOL. The upper edge OBK of the lower refrigerant line KML2 causes an overflow of the refrigerant and thereby a continuous feed of the evaporator VERD by liquid refrigerant KM.

This in FIG. 7 illustrated embodiment shows a further variant of in FIG. 5 shown cooling rack KR1 as a detail with the section through the upper portion of the cooling rack KR1 and not the subject of the present invention.

The upper horizontal subspace HR1 is subdivided into a lower area which carries cooled air KL and discharges it to the goods space KR1M at the air outlet opening LA, and the overlying area which contains the isolation element ISOE with integrated condenser compartment VFA.

In this variant, a simplified embodiment of the insulation element ISOE with integrated condenser compartment VFA is shown in the upper horizontal subspace HR1. The insulation element ISOE is designed as a so-called sandwich plate and described in the following.

The air flow of the cooled air KL is in the FIG. 2 described in more detail. In this embodiment of the condenser compartment VFA, in particular conventional sandwich panels with thicknesses of at least 4 cm are used. These sandwich panels, which consist of an outer wall AW and an inner wall IW made of rigid material, in particular steel, wood, plastic or composite materials and an interposed insulating material IS, in particular polyurethane. From the insulation element ISOE, the outer wall AW and the insulating material IS are removed in the area of the condenser compartment VFA until, in this area, only the inner wall IW exists. This inner wall IW serves as attachment for the cooling rack individual cooling devices KR1KE. In this resulting condenser compartment VFA, an insulation medium ISO1 is used, in particular on the sides and on the floor, as already described with reference to FIG FIG. 5 described in connection with the compressor housing KOMG at the second isolation medium ISO2.

In a further, not shown embodiment according to FIG. 7 is the controller ST, at least partially sunk in the upper horizontal subspace HR1.

FIG. 8 shows an embodiment of the cooling rack KR1 according to the invention in the form of a plan view. FIG. 8 shows the insulation element ISOE with the control ST and a condenser compartment VFA embedded in the insulation element ISOE. The structure of the condenser housing VFG and the first insulating medium ISO1 corresponds to the embodiment according to FIG. 5 , The cooling rack individual cooling devices KR1KE arranged in the condenser compartment VFA are in the primary circuit PK, the second pressure sensor DA2, the condenser VF, the filter element FT and the shut-off device AO.

The refrigerant lines KML of the primary circuit PK are guided through line feedthroughs LTD into the vertical subspace VR and connected to further cooling rack individual cooling devices KR1KE. The complete primary circuit PK of the refrigeration cycle is already in FIG. 5 and FIG. 6 shown.

The condenser consists of one condenser input VFAE and one condenser output VFAB. The condenser VF may rest on the condenser housing VFG or be fixed to the condenser housing VFG by fastening means BFM. From the condenser outlet VFAB the refrigerant KM flows through a filter element FT, in particular a filter drier, which binds water and solids from the refrigerant KM and flows on through a shut-off device AO which automatically closes when the compressor KOM is deactivated or fails, thereby preventing liquid refrigerant KM passes through the evaporator VERD in the intake of the compressor KOM and leads to damage of the compressor COM when restarting, so-called liquid blows leads. The secondary circuit SK to FIG. 8 corresponds to the secondary circuit after FIG. 5 ,

In the refrigerator according to the invention, the condenser VF is at least partially disposed within the refrigerated rack KR1 in its upper portion HR1, and the compressor KOM is disposed within the refrigerated rack KR1 in the lower portion VR thereof.

The condenser VF is accessible from outside the refrigerator; likewise, the compressor KOM is accessible from outside the refrigerated cabinet.

The condenser VF is arranged in a condenser compartment VFA, which is designed in such a way that it is detachably connected to the refrigerated cabinet.

The compressor KOM is assigned a arranged in the refrigerator compressor housing KOMG, which is detachably connected to the refrigerator. The compressor KOM is accessible via the refrigerator KR1M.

LIST OF REFERENCE NUMBERS

KE1

Cooling system internal cooling device

WT

heat exchangers

WTL1, WTL2

first or second line of WT

HZ

Appliance, heating

M1

first medium

M2

second medium

T1

Temperature of a first temperature range

T2

Temperature of a second temperature range

KR1

(first) cooling rack

KR1M

Refrigerator of KR1

RE1, ..., RE4

horizontal shelf element

LK

lower loading edge

FR

function room

VR

Vertical subspace

HR1

Upper horizontal subspace

HR2

lower horizontal subspace

KR1KE

Cooling rack individual cooling unit from KR1

COM

compressor

VERD

Evaporator

VF

condenser

KR1L1

first line of KR1

KR1L11

first line connection of KR1L1

KR1L12

second line connection of KR1L1

KR1L2

second line of KR1

KR1L21

first line connection of KR1L2

KR1L22

second line connection of KR1L2

VT1

first blower device, fan

VT2

second blower device, fan

N / A

mains connection

WD

wall

KL

Chilled air

WL

Heated air

LA

air outlet

LE

air intake

KR2

Another (second) cooling rack

KR2M

Refrigerator of KR2

KR2KE

Cooling rack individual cooling unit from KR2

KR2KEVF

Condenser from KR2KE

KR2L1

first line of KR2

KR2L11

first line connection of KR2L1

KR2L12

second line connection of KR2L1

KR2L2

second line of KR2

KR2L21

first line connection of KR2L2

KR2L22

second line connection of KR2L2

KRN

nth refrigerated shelf

VT3

third blower device, fan

KOMG

compressor housing

VFA

Verflüssigerabteil

ISO1

first isolation medium

ISO2

second isolation medium

ISOE

insulation element

LAH

Rear air outlet

LEH

Rear air intake

LAE

Air outlet element

ST

Control / regulation

AE

cover

RE

control element

AO

shutoff

COL

collector

LTD

Cable bushings

FT

filter element

IW

inner wall

AW

outer wall

IS

insulation element

FROM

outdoors

UG

Surroundings

DA1

Pressure transducer 1

DA2

Pressure transducer 2

KML

Coolant lines

GAO

Housing outer wall

VFG

condenser housing

AL

outside air

RV

control valve

RW

rear wall

PK

primary circuit

SK

Secondary circuit (medium)

FROM

outdoors

UG

Surroundings

VFAE

Condenser inlet

Vfab

Condenser outlet

KM

refrigerant

BFM

fastener

LAAE

air outlet

KML1

first refrigerant line

KML2

second refrigerant line

OBK

top edge

KOA

compressor compartment

Claims (18)

1. Refrigerating furniture, for cooling chiller product in a refrigeration chamber (KR1M), with an access region via which the chiller product can be accessed, and with a cooling device (KR1 KE) having a compressor (KOM), wherein the refrigerating furniture is configured as a refrigerated cabinet (KR1) for the presentation of the chiller product in the refrigeration chamber (KR1M),

   - the condenser (VF) is at least partially arranged inside the refrigerated cabinet (KR1) in its upper region (HR1) within a condenser chamber (VFA) and is accessible from outside the refrigerated cabinet (KR1),

   - the condenser chamber (VFA) is configured so as to be detachably connected to the refrigerated cabinet (KR1),

   - the compressor (KOM) is arranged in a compressor housing (KOMG) arranged in the refrigerated cabinet (KR1),

   - the compressor (KOM) is accessible from outside the refrigerating furniture, and

   - the compressor housing (KOMG) is detachably connected to the refrigerated cabinet (KR1),

   characterised in that the compressor (KOM) is arranged in the lower region (VR) of the refrigerated cabinet (KR1) and is accessible from the front via the refrigeration chamber (KR1M) of said refrigerated cabinet (KR1).
2. Refrigerating furniture according to claim 1, characterised in that

   - the refrigerated cabinet (KR1) has a rear wall (RW), and the rear wall (RW) has at least one air outlet element (LAE) in the region of the compressor (KOM).
3. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - the condenser (VF) and the compressor (KOM) are thermally and/or acoustically insulated from the refrigeration chamber (KR1M).
4. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - the compressor (KOM) is assigned a blower device (VT3) for cooling.
5. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - a refrigerating furniture control (ST) is arranged in a housing module, and the housing module can be detachably connected to the refrigerated cabinet (KR1).
6. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - a control element (RE) is arranged in the condenser chamber (VFA) and regulates a flow of the refrigerant through the condenser (VF).
7. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - the condenser chamber (VFA) is assigned a first insulation medium (IS01) comprising synthetic rubber and/or a similar insulation material.
8. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - the compressor housing (KOMG) is assigned a second insulation medium (IS02) comprising synthetic rubber and/or a similar insulation material.
9. Refrigerating furniture according to any one of the preceding claims, characterised in that

   - the refrigerated cabinet (KR1) and at least one further refrigerated cabinet (KR2) each have a cooling device (KR1KE, KR2KE) individual to the refrigerated cabinet,
   and in that

   - the cooling devices (KR1KE, KR2KE) individual to the refrigerated cabinet have pipes (KR1L1, KR1L2; KR2L1, KR2L2) to which the cooling devices individual to the refrigerated cabinet are interconnectable and/or are connectable to at least one heat exchanger (WT) and in which media (M1, M2) of differing temperatures (T1, T2) are carried.
10. Refrigerating furniture according to claim 9, characterised in that

    - the refrigerated cabinet (KR1) and the at least one further refrigerated cabinet (KR2) are connected to exactly one common heat exchanger (WT).
11. Refrigerating furniture according to any one of claims 4 to 10, characterised in that

    - the refrigerated cabinet (KR1, KR2) has at least one further blower device (VT1, VT2) which is arranged in the upper region of the refrigerated cabinet (KR1, KR2) and conducts a stream (KL) of cool air formed by means of the cooling device individual to the refrigerated cabinet into the refrigeration chamber (KR1M1, KR1M2) of the refrigerated cabinet (KR1, KR2), and/or which is arranged in particular in the lower region of the refrigerated cabinet (KR1, KR2) and extracts the stream (WL) of cool air out of the refrigeration chamber (KR1M, KR2M) after its warming therein.
12. Refrigerating furniture (KR 1) according to any one of claims 9 to 11, characterised in that

    - the cooling device (KR1KE) internal to the refrigerated cabinet is connected to a first pipe (KR1L1) for carrying a first medium (M1) which has a temperature (T1) in a first temperature range and for connection to the heat exchanger (WT),
    in that

    - the cooling device (KR1KE) internal to the refrigerated cabinet is connected to a second pipe (KR1L2) for carrying a second medium (M2) which has a temperature (T2) in a second temperature range and for connection to the heat exchanger (WT),
    in that

    - the first pipe (KR1L1) has a first pipe connector (KR1L11) which corresponds to a pipe connector (WTL1) of the heat exchanger (WT) and/or to a first pipe connector (KR2L11) of the further refrigerated cabinet (KR2),
    in that

    - the first pipe (KR1L1) has a second pipe connector (KR1L12) which corresponds to a second pipe connector (KR2L12) of the further refrigerated cabinet (KR2),
    in that

    - the second pipe (KRL2) has a first pipe connector (KR1L21) which corresponds to a pipe connector (WTL1) of the heat exchanger (WT) and/or to a first pipe connector (KR2L21) of the further refrigerated cabinet (KR2)
    and in that

    - the second pipe (KR1L2) has a second pipe connector (KR1L22) which corresponds to a second pipe connector (KR2L21) of the further refrigerated cabinet (KR2).
13. Refrigerating furniture according to claim 12, characterised in that

    - the pipe connectors (KR1L11, KR1L12; KR1L21, KR1L22; WTL1, WTL2) are identical.
14. Refrigerating furniture according to claim 12 or 13, characterised in that

    - condensers (KR1KEVF; KR2KEVF) of the cooling devices (KR1KE, KR2KE) individual to the refrigerated cabinet are connected to the first pipe (KR1L1, KR2L1) and to the second pipe (KR1L2, KR2L2).
15. Refrigerating furniture according to any one of claims 10 to 14, characterised in that

    - the refrigerated cabinet (KR1) and the at least one further refrigerated cabinet (KR2) are connected to a common heat exchanger (WT) and/or to a device (HZ) which delivers heat to the environment.
16. Refrigerating furniture according to any one of the preceding claims, characterised in that

    - the refrigeration chamber (KR1M) has a detachable wall element in its entrance region.
17. Refrigerating furniture according to any one of claims 9 to 16, characterised in that

    - a cooling device (KR1KE) individual to the refrigerated cabinet is assigned to at least two refrigerated cabinets (KR1, KR2).
18. Refrigerating furniture according to any one of the preceding claims, characterised in that

    - the refrigeration chamber (KR1M) is configured to be open on at least one side so that the chiller product is freely accessible during cooling operation.

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