[0001] According to a first aspect, the invention relates to a serving counter for displaying
refrigerated products in a display space thereof, comprising a display shelf that
bounds the display space on a bottom side, which display shelf is configured for supporting
the products to be displayed on a supporting surface thereof, a first refrigeration
unit configured for supplying cooled gas to the display space via a wall of the display
space and a second refrigeration unit configured for cooling the supporting surface,
wherein the second refrigeration unit comprises a refrigerating element for cooling
the supporting surface in a manner distributed over the display shelf.
[0002] Serving counters are used in supermarkets and cheese stores, among other places,
for the refrigerated display of products. The refrigerated products are to that end
placed in a display space that is freely accessible to consumers and/or the storekeeper
without these persons having to open and close a door or the like, for example, which
gives access to the display space. The products are generally kept at a temperature
ranging between -1 °C and + 4.4 °C. The display space of known serving counters is
mainly bounded by a display shelf at the bottom side for supporting the products to
be displayed thereon. In known serving counters a refrigeration unit is provided for
blowing a cooled gas, for example air, into the display space, between the products
present therein, via a side wall of the display space, and the display shelf is cooled.
Although the known serving counters function well in practice, the energy consumption
of the known serving counters is open to improvement.
DE 19548377 A1 discloses a cold display counter for perishable foodstuffs e.g. for meat, sausages
or bakery products.
DE 19504286 A1 discloses a heat exchanger cooling or heat surface.
[0003] Accordingly it is an object of the present invention to provide a serving counter
with a reduced energy consumption.
[0004] According to the present invention, this object is achieved in that the refrigerating
element comprises a first refrigerating part and a second refrigerating part, wherein
the second refrigerating part is configured for cooling the supporting surface in
a portion of the display shelf remote from the wall and the second refrigerating part
is configured for realising a larger refrigeration capacity of the supporting surface
than the first refrigerating part, wherein the first refrigerating part is configured
for cooling the supporting surface in a portion of the display shelf adjacent to the
wall. The invention is based on the insight that a relatively low temperature of the
cooled gas to be blown into the display space is needed in the known serving counters
for maintaining a desired temperature of the products in the display space thereof
so as to realise the desired temperature of the products that are in a manner distributed
over the supporting surface of the display shelf in use. Because the refrigeration
capacity of the supporting surface is greater in a portion of the display shelf remote
from the wall than in a portion of the display shelf adjacent to the wall, it is possible
to keep products present on the supporting surface of the portion of the display shelf
remote from the wall within a desired temperature range while using a higher temperature
of the gas to be blown into the display space. The use of a higher temperature for
the gas to be blown in by the first refrigeration unit leads to a reduced energy consumption
of the serving counter in comparison with the known serving counters. An additional
advantage is that because of the greater refrigeration capacity, the display shelf
can extend along a greater length from the wall while keeping the desired temperature
of the products within the aforesaid range.
[0005] It is noted that within the scope of the present invention, "a wall of the display
space" is understood to mean a wall that bounds the display space.
[0006] Within the scope of the present invention, the "refrigeration capacity" is understood
to mean the amount of energy that can be withdrawn from the products present on the
display shelf per unit time.
[0007] Within the scope of the present invention a serving counter is understood to cover
serving counters for keeping products at a temperature ranging between -1 °C and +
4.4 °C as well as refrigerator and/or freezer cabinets for keeping products at a temperature
ranging between -18 °C and + 4.4 °C.
[0008] It is advantageous in this regard if the second refrigerating part is provided at
a smaller distance from the supporting surface than the first refrigerating part.
By providing the second refrigerating part at a smaller distance from the supporting
surface, the refrigeration capacity is increased in a practical manner as a result
of an improved heat transfer between the second refrigerating part and the supporting
surface.
[0009] It is advantageous if a ratio of a cooling surface area of the second refrigerating
part to the portion remote from the wall of the supporting surface is greater than
a ratio of a cooling surface area of the first refrigerating part to the portion of
the supporting surface adjacent to the wall. By increasing this ratio, the refrigeration
capacity at the portion remote from the wall can be increased whilst the refrigeration
intensity of the refrigerating element can remain the same. Within the scope of the
present invention, the term "refrigeration intensity" is understood to mean the refrigeration
capacity per unit area of the refrigerating element.
[0010] In a practical embodiment, the refrigerating element comprises an arrangement of
pipes provided under the supporting surface for cooling the display shelf in a manner
distributed over the display shelf, wherein a spacing between adjacent pipes is smaller
in the second refrigerating part than in the first refrigerating part. By spacing
adjacent pipes closer together in the second refrigerating part, the refrigeration
capacity is increased whilst the refrigeration intensity can remain the same.
[0011] It is advantageous if the first refrigeration unit comprises an inlet extending in
the wall, which inlet is configured for imparting a downward component into the display
space to the gas to be blown into the display space for refrigerating the products
that are present in the display space in use from above. By refrigerating the products
from above, a more even refrigeration of the products that are in a manner distributed
over the supporting surface can be realised by the gas being blown into the display
space.
[0012] It is advantageous in this regard if gas guiding elements are provided at the inlets
for guiding the gas to be supplied to the display space in a desired direction. The
use of gas guiding elements is advantageous for realising a relatively precise distribution
of the gas blown into the display space.
[0013] In an advantageous embodiment variant comprising the inlet extending in the wall,
an outlet is provided in the wall on the side of the inlet remote from the display
shelf for discharging gas that is present in the display space from the display space.
Providing the outlet at this position in the wall makes it possible to realise a gas
flow in the display space wherein a return flow of gas is present between the relatively
cold gas blown into the display space and ambient air outside the serving counter,
which return flow at least partially screens the relatively cold gas from the ambient
air.
[0014] It is advantageous in this regard if a fan is provided on the side of the outlet
remote from the display space for discharging gas from the display space, wherein
an axis of rotation of the fan extends substantially parallel to the wall. The provision
of a fan having an axis of rotation that extends substantially parallel to the wall
makes it possible to realise a relatively uniform forced discharge of air from the
display space. A uniform forced discharge is advantageous for realising a relatively
uniform refrigeration of the products present in the display space.
[0015] In an embodiment comprising the outlet in the wall it is advantageous if the outlet
is connected for fluid flow to the inlet via a first evaporator, wherein the first
evaporator is configured for cooling the gas to be supplied to the display space through
evaporation of a refrigerant. Connecting the two for fluid flow is advantageous for
reducing the amount of energy that is needed by at least partially recirculating the
cooled gas blown into the display space.
[0016] It is advantageous in this regard if the first evaporator is configured as a counterflow
evaporator that is configured to provide a downward gas flow of the cooled gas to
be supplied to the display space via the inlet and an upward flow of refrigerant present
in the first evaporator. A counterflow evaporator is advantageous for realising a
compact first refrigeration unit.
[0017] In an embodiment comprising the first evaporator, it is advantageous if the first
evaporator is connected for fluid flow to a first heat exchanger, wherein the first
heat exchanger is provided upstream of the first evaporator and the first heat exchanger
is configured for cooling gas to be supplied to the display space via the inlet after
the gas to be supplied has passed through the first evaporator. By providing the first
heat exchanger upstream, a relatively strong cooling of the gas to be supplied to
the display space can be obtained before said gas is supplied to the display space
via the inlet, wherein the gas cooled by the first heat exchanger is cooled by the
first evaporator after being discharged from the display space. Such an embodiment
is advantageous for realising a relatively large refrigeration capacity in a relatively
compact construction.
[0018] In a practical embodiment, the refrigerating element is connected for fluid flow
to an evaporator for evaporating a refrigerant that is provided downstream of the
refrigerating element, which evaporator is formed by a second evaporator. By providing
the refrigerating element upstream of an evaporator, a relatively strong cooling of
the supporting surface can be obtained. Such an embodiment is advantageous for realising
a relatively large refrigeration capacity in a relatively compact construction.
[0019] It is advantageous in this regard if the second evaporator is formed by the first
evaporator. The fact that the second evaporator is formed by the first evaporator
makes it possible to realise a larger refrigeration capacity in the first refrigeration
unit.
[0020] It is advantageous if a heating device is provided which comprises a second heat
exchanger that can be connected for fluid flow to the refrigerating element and/or
the first heat exchanger, wherein the second heat exchanger is configured for heating
refrigerant present in the second heat exchanger by heat transfer. This heating device
is advantageous with a view to heating the refrigerating element of the first heat
exchanger, for example for removing or at least reducing any icing in the serving
counter.
[0021] This heating device can advantageously be used in a refrigerator or freezer cabinet.
Refrigerator or freezer cabinets are used in supermarkets, among other places, for
the refrigerated display of products. The refrigerated products are to that end placed
in a display space that is accessible to consumers, who must to that end open a closing
element, such as a door or the like, for example, which gives access to the display
space. The products are generally kept at a temperature ranging between -18 °C and
+ 4.4 °C.
[0022] A refrigerator or freezer cabinet is essentially different from a display counter
according to the first aspect of the present invention in that it comprises a display
space that can be closed off from an outside space. Such a refrigerator and/or freezer
cabinet for the displaying refrigerated products in a display space that can be closed
off from an outside space comprises a display shelf that bounds the display space
on a bottom side, which display shelf is configured for supporting the products to
be displayed on a supporting surface thereof, and a first refrigeration unit configured
for supplying cooled gas to the display space via a wall of the display space, characterised
in that a heating device is provided which comprises a second heat exchanger that
can be connected for fluid flow to the first refrigeration unit, wherein the second
heat exchanger is configured for heating refrigerant present in the second heat exchanger
by heat transfer. Providing a refrigerator or freezer cabinet with such a heating
device is advantageous for defrosting the first refrigeration unit. The invention
is defined by the appended claims, and can be further described by the following illustrative
clauses of a serving counter comprising a refrigerator and/or freezer cabinet:
Clause 1. A refrigerator and/or freezer cabinet for displaying refrigerated products
in a display space thereof, comprising a display shelf that bounds the display space
on a bottom side, which display shelf is configured for supporting the products to
be displayed on a supporting surface thereof, a first refrigeration unit configured
for supplying cooled gas to the display space via a wall of the display space and
a second refrigeration unit configured for cooling the supporting surface, wherein
the second refrigeration unit comprises a refrigerating element for cooling the supporting
surface in a manner distributed over the display shelf, characterised in that the
refrigerating element comprises a first refrigerating part and a second refrigerating
part, wherein the second refrigerating part is configured for cooling the supporting
surface in a portion of the display shelf remote from the wall and the second refrigerating
part is configured for realising a larger refrigeration capacity of the supporting
surface than the first refrigerating part, wherein the first refrigerating part is
configured for cooling the supporting surface in a portion of the display shelf adjacent
to the wall.
Clause 2. A refrigerator and/or freezer cabinet according to clause 1, characterised
in that the second refrigerating part is provided at a smaller distance from the supporting
surface than the first refrigerating part.
Clause 3. A refrigerator and/or freezer cabinet according to clause 1 and/or 2, characterised
in that a ratio of a cooling surface area of the second refrigerating part to the
portion remote from the wall of the supporting surface is greater than a ratio of
a cooling surface area of the first refrigerating part to the portion of the supporting
surface adjacent to the wall.
Clause 4. A refrigerator and/or freezer cabinet according to any one of the preceding
clauses, characterised in that the refrigerating element comprises an arrangement
of pipes provided under the supporting surface for cooling the display shelf in a
manner distributed over the display shelf, wherein a spacing between adjacent pipes
is smaller in the second refrigerating part than in the first refrigerating part.
Clause 5. A refrigerator and/or freezer cabinet according to any one of the preceding
clauses, characterised in that the first refrigeration unit comprises an inlet extending
in the wall, which inlet is configured for imparting a downward component into the
display space to the gas to be blown into the display space for refrigerating the
products that are present in the display space in use from above.
Clause 6. A refrigerator and/or freezer cabinet according to clause 5, characterised
in that gas guiding elements are provided at the inlets for guiding the gas to be
supplied to the display space in a desired direction.
Clause 7. A refrigerator and/or freezer cabinet according to either one of clauses
5 - 6, characterised in that an outlet is provided in the wall on the side of the
inlet remote from the display shelf for discharging gas that is present in the display
space from the display space.
Clause 8. A refrigerator and/or freezer cabinet according to clause 7, characterised
in that a fan is provided on the side of the outlet remote from the display space
for discharging gas from the display space, wherein an axis of rotation of the fan
extends substantially parallel to the wall.
Clause 9. A refrigerator and/or freezer cabinet according to either one of clauses
7 - 8, characterised in that the outlet is connected for fluid flow to the inlet via
a first evaporator, wherein the first evaporator is configured for cooling the gas
to be supplied to the display space through evaporation of a refrigerant.
Clause 10. A refrigerator and/or freezer cabinet according to clause 9, characterised
in that the first evaporator is configured as a counterflow evaporator that is configured
to provide a downward gas flow of the cooled gas to be supplied to the display space
via the inlet and an upward flow of refrigerant present in the first evaporator.
Clause 11. A refrigerator and/or freezer cabinet according to any one of the preceding
clauses, characterised in that the refrigerating element is connected for fluid flow
to an evaporator for evaporating a refrigerant that is provided downstream of the
refrigerating element, which evaporator is formed by a second evaporator.
Clause 12. A refrigerator and/or freezer cabinet according to clause 11, characterised
in that the second evaporator is formed by the first evaporator.
Clause 13. A refrigerator and/or freezer cabinet according to any one of the preceding
clauses, characterised in that a heating device is provided which comprises a second
heat exchanger that can be connected for fluid flow to the refrigerating element and/or
the first heat exchanger, wherein the second heat exchanger is configured for heating
refrigerant present in the second heat exchanger by heat transfer.
Clause 14. Use of a refrigerator and/or freezer cabinet according to any one of the
preceding clauses, characterised in that a refrigerant is supplied to the first refrigeration
unit for cooling gas to be supplied to the display space and/or to the second refrigeration
unit for cooling the supporting surface, wherein the refrigerant has a temperature
that ranges between -30 °C and -2 °C.
Clause 15. Use according to clause 14, characterised in that the refrigerant has a
temperature that ranges between -6.5 °C and -5.5 °C.
[0023] According to a second aspect, the present invention relates to the use of a serving
counter according to the present invention, wherein a refrigerant is supplied to the
first refrigeration unit for cooling gas to be supplied to the display space and/or
to the second refrigeration unit for cooling the supporting surface, wherein the refrigerant
has a temperature that ranges between -8 °C and -2 °C. A temperature within this range
is higher than the usual temperatures of a refrigerant to be supplied to the known
serving counters. A higher temperature of the refrigerant is advantageous for reducing
the amount of energy that is required.
[0024] It is advantageous in this regard if the refrigerant has a temperature that ranges
between -6.5 °C and -5.5 °C. An advantage of this temperature range is that it makes
it possible to connect the serving counter to a central unit for cooling the refrigerant
as for example present in a supermarket, without additional cooling of the refrigerant
being required.
[0025] The present invention will now be explained in more detail by means of a description
of preferred embodiments of a serving counter according to the present invention,
in which reference is made to the following schematic figures, in which:
Figure 1 shows a serving counter in partially sectional side view;
Figure 2 shows the serving counter of figure 1 in sectional side view;
Figure 3 shows the detail A-A of figure 2;
Figure 4 shows the detail B-B of figure 2;
Figure 5 shows a refrigeration diagram for a serving counter according to the present
invention;
Figure 6 shows a refrigeration diagram for a serving counter according to the present
invention;
Figure 7 shows a refrigeration diagram for a serving counter according to the present
invention.
[0026] The serving counter 1 is provided with a frame 3 for supporting the serving counter
1 on a ground surface 5. On the side of the serving counter 1 that faces the consumer
in use, a display wall 7 which supports a substantially horizontal wall portion 9
on the upper side thereof is provided. The display wall 7 and the wall portion 9 bound
a display space 11 on the side of the serving counter 1 that faces the consumer. At
the bottom side, the display space 11 is mainly bounded by a display shelf 12 that
extends in the transverse direction B of the serving counter. On the side of the serving
counter 1 remote from the display wall 7, a housing part 13 is provided, in which
a part of the first refrigeration unit 15 is accommodated.
[0027] The first refrigeration unit 15 is configured for supplying cooled gas, for example
air, to the display space 11 via a wall 17. The wall 17 is to that end provided with
an inlet 19 extending in the wall 17. The inlet 19 extends along a length of the serving
counter 1, substantially perpendicular to the transverse direction B. The inlet 19
is configured for imparting a downward direction component in the display space 11
to the gas to be blown into the display space 11 for refrigerating products that are
present in the display space 11 in use from above. Gas guiding elements 21 are provided
at the inlet 19 for guiding the gas to be supplied to the display space 11 in the
desired direction. An outlet 23 is provided in the wall 17, on the side of the inlet
19 remote from the display shelf 12, for discharging gas from the display space 11.
The outlet 23 extends substantially perpendicular to the transverse direction B along
a length of the serving counter 1. On the side of the outlet 23 remote from the display
space 11, a fan 25 is provided for discharging gas from the display space 11, with
a rotation axis 27 of the fan 25 extending substantially parallel to the wall 17.
The outlet 23 is connected for fluid flow to the inlet 19 via a first evaporator 29,
wherein the first evaporator 29 is configured for cooling the gas to be supplied to
the display space 11 by evaporating a refrigerant. Examples of evaporating refrigerants
that can be advantageously used in the first refrigeration unit 15 are R404A, R507,
R134a, R407A, R407D, R407F, R448A, R449A, R410A, R744, R290.
[0028] The first evaporator 29 is configured as a counterflow evaporator configured for
providing a downward gas flow toward the ground surface 5 of the cooled gas to be
supplied to the display space 11 via the inlet 19 and an upward flow of refrigerant
present in the first evaporator 29. The first evaporator 29 is connected for fluid
flow to a first heat exchanger 31. The refrigerant flowing through the first heat
exchanger 31 in use flows through an evaporator 29 provided downstream of the first
heat exchanger 31. The refrigerant is evaporated upon passing through the evaporator
29, so that the gas to be supplied to the display space can be cooled. The first heat
exchanger 31 is configured for cooling gas to be supplied to the display space 11
via the inlet 19 after the gas to be supplied has passed through the first evaporator
29.
[0029] Alternatively a substantially non-evaporating (in use) refrigerant, such as for example
a glycol such as mono-ethylene glycol DTX (detoxified) 27% or mono-propylene glycol
32% may be used, in which case the first refrigeration unit will be provided with
an air cooler rather than with an evaporator.
[0030] The serving counter 1 further comprises a second refrigeration unit 33 for cooling
the supporting surface 35 of the display shelf 12. The second refrigeration unit 33
comprises a refrigerating element 37 for cooling the supporting surface 35 in a manner
distributed over the display shelf 12. The refrigerating element 37 comprises a first
refrigerating part 39 and a second refrigerating part 41 and comprises an arrangement
of pipes 47 provided under the supporting surface 35 for cooling the display shelf
12 in a manner distributed over the display shelf 12. The first refrigerating part
39 is configured for cooling the supporting surface 35 in a portion 45 of the display
shelf 12 adjacent to the wall 17. The second refrigerating part 41 is configured for
cooling the supporting surface 35 in a portion 43 of the display shelf 12 remote from
the wall 17. The second refrigerating part 41 is configured for realising a larger
refrigeration capacity of the supporting surface 35 than the first refrigerating part
39. The pipes 47 of the second refrigerating part 41 are provided closer to the supporting
surface 35 than the pipes 47 of the first refrigerating part 39. The pipes 47 of the
second refrigerating part 41 are located on an underside of the display shelf 12.
The cooling element 37 is connected for refrigerant flow to a second evaporator for
evaporating refrigerant present in the second refrigeration unit 33.
[0031] Alternatively, a substantially non-evaporating (in use) refrigerant, such as for
example a glycol such as mono-ethylene glycol DTX (detoxified) 27% or mono-propylene
glycol 32% may be used in the second refrigeration unit, in which case the second
refrigeration unit will be provided with a plate cooler provided with pipes rather
than with an evaporator.
[0032] It is conceivable that the pipes of the second refrigerating part are spaced from
the underside of the display shelf or that they are partially or fully incorporated
in the display shelf. In one embodiment (not shown), pipes in the second refrigerating
part are spaced closer together than the pipes in the first refrigerating part, so
that a ratio of a cooling surface area of the pipes of the second refrigerating part
to the part of the supporting surface remote from the wall is greater than a ratio
of a cooling surface area of the pipes of the first refrigerating part to the part
of the supporting surface adjacent to the wall.
[0033] Figure 5 shows an embodiment of a refrigeration diagram of a serving counter 1, in
which an evaporating refrigerant such as R404A, R507, R134a, R407A, R407D, R407F,
R448A, R449A, R410A, R744, R290 can be used. The refrigerant can be supplied to the
second refrigeration unit 33 via a distributor 63, which refrigeration unit 33 is
connected for fluid flow to the first refrigeration unit 15. The first refrigeration
unit 15 is provided with a discharge pipe 65 for discharging the refrigerant from
the first refrigeration unit. The refrigeration diagram shown in figure 7 is different
from the refrigeration diagram of figure 5 in that it includes a thermostatic expansion
valve 69, whereas the refrigeration diagram of figure 5 includes an electronic expansion
valve 67. In a serving counter 1 provided with a refrigeration system according to
the refrigeration diagram of figure 5 or figure 7, the evaporating refrigerant is
supplied in liquid form, in which case the refrigerant will have a temperature that
ranges between -8 °C and -2 °C. The refrigerant will have evaporated upon exiting
the second refrigeration unit 15, after which the gaseous refrigerant can be supplied
to a compressor (not shown) again for being cooled.
[0034] In the embodiment shown in figure 6 of a refrigeration diagram for use of a substantially
non-evaporating (in use) refrigerant in a serving counter 1, a heating device is provided.
The heating device comprises a second heat exchanger 51, which can be connected for
fluid flow to the first heat exchanger 31. A pump 57 is provided in the supply pipe
55 to the second heat exchanger 51 and a first non-return valve 59 is provided in
the discharge pipe of the second heat exchanger 51. The first non-return valve 59,
in combination with a second non-return valve 61, makes it possible to circulate a
refrigerant in the first heat exchanger 31 and the second heat exchanger 51. Disposing
the second heat exchanger 51 in the outside air makes it possible to heat refrigerant
that is present in the second heat exchanger 51.
1. A serving counter (1) for displaying refrigerated products in a display space (11)
thereof, comprising a display shelf (12) that bounds the display space (11) on a bottom
side, which display shelf (12) is configured for supporting the products to be displayed
on a supporting surface (35) thereof, a first refrigeration unit (15) configured for
supplying cooled gas to the display space (11) via a wall (17) of the display space
(11) and a second refrigeration unit (33) configured for cooling the supporting surface
(35), wherein the second refrigeration unit (33) comprises a refrigerating element
(37) for cooling the supporting surface (35) in a manner distributed over the display
shelf (12), characterised in that the refrigerating element (37) comprises a first refrigerating part (39) and a second
refrigerating part (41), wherein the second refrigerating part (41) is configured
for cooling the supporting surface (35) in a portion of the display shelf (12) remote
from the wall (17) and the second refrigerating part (41) is configured for realising
a larger refrigeration capacity of the supporting surface (35) than the first refrigerating
part (39), wherein the first refrigerating part (39) is configured for cooling the
supporting surface (35) in a portion of the display shelf (12) adjacent to the wall
(17).
2. A serving counter (1) according to claim 1, characterised in that the second refrigerating part (41) is provided at a smaller distance from the supporting
surface (35) than the first refrigerating part (39).
3. A serving counter (1) according to claim 1 or 2, characterised in that a ratio of a cooling surface area of the second refrigerating part (41) to the portion
remote from the wall (17) of the supporting surface (35) is greater than a ratio of
a cooling surface area of the first refrigerating part (39) to the portion of the
supporting surface (35) adjacent to the wall (17).
4. A serving counter (1) according to any one of the preceding claims, characterised in that the refrigerating element (37) comprises an arrangement of pipes (47) provided under
the supporting surface (35) for cooling the display shelf (12) in a manner distributed
over the display shelf (12), wherein a spacing between adjacent pipes (47) is smaller
in the second refrigerating part (41) than in the first refrigerating part (39).
5. A serving counter (1) according to any one of the preceding claims, characterised in that the first refrigeration unit (15) comprises an inlet (19) extending in the wall (17),
which inlet (19) is configured for imparting a downward component into the display
space (11) to the gas to be blown into the display space (11) for refrigerating the
products that are present in the display space (11) in use from above.
6. A serving counter (1) according to claim 5, characterised in that gas guiding elements (21) are provided at the inlets (19) for guiding the gas to
be supplied to the display space (11) in a desired direction.
7. A serving counter (1) according to claim 5 or 6, characterised in that an outlet (23) is provided in the wall (17) on the side of the inlet (19) remote
from the display shelf (12) for discharging gas that is present in the display space
(11) from the display space (11).
8. A serving counter (1) according to claim 7, characterised in that a fan (25) is provided on the side of the outlet (23) remote from the display space
(11) for discharging gas from the display space (11), wherein an axis of rotation
of the fan (25) extends substantially parallel to the wall (17).
9. A serving counter (1) according to claim 7 or 8, characterised in that the outlet (23) is connected for fluid flow to the inlet (19) via a first evaporator
(29), wherein the first evaporator (29) is configured for cooling the gas to be supplied
to the display space (11) through evaporation of a refrigerant.
10. A serving counter (1) according to claim 9, characterised in that the first evaporator (29) is configured as a counterflow evaporator that is configured
to provide a downward gas flow of the cooled gas to be supplied to the display space
(11) via the inlet (19) and an upward flow of refrigerant present in the first evaporator
(29).
11. Use of a serving counter (1) according to any one of claims 1 - 10, characterised in that a refrigerant is supplied to the first refrigeration unit (15) for cooling gas to
be supplied to the display space (11) and/or to the second refrigeration unit (33)
for cooling the supporting surface (35), wherein the refrigerant has a temperature
that ranges between -30 °C and -2 °C, preferably between -8 °C and -2 °C, more preferably
between -6.5 °C and -5.5 °C.
1. Bedienungstheke (1) zum Auslegen von gekühlten Produkten in einem Auslageraum (11)
von dieser, umfassend:
- ein Auslageregal (12), das den Auslageraum (11) an einer unteren Seite begrenzt,
wobei das Auslageregal (12) zum Tragen der auszulegenden Produkte auf einer tragenden
Oberfläche (35) von diesem konfiguriert ist,
- eine erste Kühleinheit (15), die zum Zuführen von gekühltem Gas an den Auslageraum
(11) über eine Wand (17) des Auslageraums (11) konfiguriert ist, und
- eine zweite Kühleinheit (33), die zum Kühlen der tragenden Oberfläche (35) konfiguriert
ist, wobei
die zweite Kühleinheit (33) ein kühlendes Element (37) zum Kühlen der tragenden Oberfläche
(35) in einer über das Auslageregal (12) verteilten Weise umfasst,
dadurch gekennzeichnet, dass
das kühlende Element (37) einen ersten kühlenden Teil (39) und einen zweiten kühlenden
Teil (41) umfasst, wobei der zweite kühlende Teil (41) zum Kühlen der tragenden Oberfläche
(35) in einem von der Wand (17) entfernten Abschnitt des Auslageregals (12) konfiguriert
ist und wobei der zweite kühlende Teil (41) zum Realisieren einer größeren Kühlleistung
der tragenden Oberfläche (35) als der erste kühlende Teil (39) konfiguriert ist, wobei
der erste kühlende Teil (39) zum Kühlen der tragenden Oberfläche (35) in einem an
die Wand (17) angrenzenden Abschnitt des Auslageregals (12) konfiguriert ist.
2. Bedienungstheke (1) nach Anspruch 1,
dadurch gekennzeichnet, dass
der zweite kühlende Teil (41) in einer kleineren Entfernung von der tragenden Oberfläche
(35) vorgesehen ist als der erste kühlende Teil (39).
3. Bedienungstheke (1) nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
ein Verhältnis eines kühlenden Oberflächenbereichs des zweiten kühlenden Teils (41)
zu dem von der Wand (17) entfernten Abschnitt der tragenden Oberfläche (35) größer
als ein Verhältnis eines kühlenden Oberflächenbereichs des ersten kühlenden Teils
(39) zu dem an die Wand (17) angrenzenden Abschnitt der tragenden Oberfläche (35)
ist.
4. Bedienungstheke (1) nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
das kühlende Element (37) eine Anordnung von Rohren (47) umfasst, die unter der tragenden
Oberfläche (35) zum Kühlen des Auslageregals (12) in einer über das Auslageregal (12)
verteilten Weise vorgesehen sind, wobei ein Abstand zwischen benachbarten Rohren (47)
in dem zweiten kühlenden Teil (41) kleiner als in dem ersten kühlenden Teil (39) ist.
5. Bedienungstheke (1) nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
die erste Kühleinheit (15) einen sich in die Wand (17) erstreckenden Einlass (19)
umfasst, der konfiguriert ist, um dem in den Auslageraum (11) zu blasenden Gas zum
Kühlen der sich in dem Auslageraum (11) befindenden Produkte im Gebrauch von oben
eine nach unten gerichtete Komponente in den Auslageraum (11) zu verleihen.
6. Bedienungstheke (1) nach Anspruch 5,
dadurch gekennzeichnet, dass
Gasführungselemente (21) an den Einlässen (19) vorgesehen sind zum Führen des dem
Auslageraum (11) zuzuführenden Gases in eine gewünschte Richtung.
7. Bedienungstheke (1) nach Anspruch 5 oder 6,
dadurch gekennzeichnet, dass
ein Auslass (23) in der Wand (17) auf der Seite des Einlasses (19) entfernt von dem
Auslageregal (12) vorgesehen ist zum Austreten von Gas, das sich in dem Auslageraum
(11) befindet, aus dem Auslageraum (11).
8. Bedienungstheke (1) nach Anspruch 7,
dadurch gekennzeichnet, dass
ein Ventilator (25) an der Seite des Auslasses (23) entfernt von dem Auslageraum (11)
vorgesehen ist zum Austreten von Gas aus dem Auslageraum (11), wobei sich eine Rotationsachse
des Ventilators (25) im Wesentlichen parallel zu der Wand (17) erstreckt.
9. Bedienungstheke (1) nach Anspruch 7 oder 8,
dadurch gekennzeichnet, dass
der Auslass (23) mit dem Einlass (19) über einen ersten Verdampfer (29) für fluide
Strömungen verbunden ist, wobei der erste Verdampfer (29) zum Kühlen des dem Auslageraum
(11) zuzuführenden Gases durch Verdampfung eines Kühlmittels konfiguriert ist.
10. Bedienungstheke (1) nach Anspruch 9,
dadurch gekennzeichnet, dass
der erste Verdampfer (29) als Gegenstromverdampfer konfiguriert ist, der konfiguriert
ist, um eine nach unten gerichteten Gasströmung des gekühlten, dem Auslageraum (11)
zuzuführenden Gases über den Einlass (19) und einen nach oben gerichteten Strom von
sich in dem ersten Verdampfer (29) befindenden Kühlmittel bereitzustellen.
11. Verwendung einer Bedienungstheke (1) nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass
ein Kühlmittel der ersten Kühleinheit (15) zum Kühlen von dem Auslageraum (11) zuzuführendem
Gas und/oder der zweiten Kühleinheit (33) zum Kühlen der tragenden Oberfläche (35)
zugeführt wird, wobei das Kühlmittel eine Temperatur aufweist, die zwischen -30 °C
und -2 °C, vorzugsweise zwischen -8 °C und -2 °C, weiter vorzugsweise zwischen -6,5
°C und -5,5 °C, liegt.
1. Comptoir de service (1) pour présenter des produits réfrigérés dans un espace de présentation
(11) de celui-ci, comprenant un présentoir (12) qui délimite l'espace de présentation
(11) sur un côté inférieur, lequel présentoir (12) est configurée pour supporter les
produits à présenter sur une surface de support (35) de celui-ci, une première unité
de réfrigération (15) configurée pour fournir un gaz refroidi à l'espace de présentation
(11) via une paroi (17) de l'espace de présentation (11) et une deuxième unité de
réfrigération (33) configurée pour refroidir la surface de support (35), où la deuxième
unité de réfrigération (33) comprend un élément réfrigérant (37) pour refroidir la
surface de support (35) de manière répartie sur le présentoir (12), caractérisé en ce que l'élément réfrigérant (37) comprend une première partie réfrigérante (39) et une
deuxième partie réfrigérante (41), où la deuxième partie réfrigérante (41) est configurée
pour refroidir la surface de support (35) dans une partie du présentoir (12) éloignée
de la paroi (17) et la deuxième partie réfrigérante (41) est configurée pour avoir
une capacité de réfrigération de la surface de support (35) plus grande que celle
de la première partie réfrigérante (39), où la première partie réfrigérante (39) est
configurée pour refroidir la surface de support (35) dans une partie du présentoir
(12) adjacente à la paroi (17).
2. Comptoir de service (1) selon la revendication 1, caractérisé en ce que la deuxième partie réfrigérante (41) est prévue à une distance par rapport à la surface
de support (35) plus petite que celle séparant la première partie réfrigérante (39)
et la surface de support (35).
3. Comptoir de service (1) selon la revendication 1 ou 2, caractérisé en ce qu'un rapport d'une superficie de refroidissement de la deuxième partie réfrigérante
(41) sur la partie éloignée de la paroi (17) de la surface de support (35) est supérieur
à un rapport d'une superficie de refroidissement de la première partie réfrigérante
(39) sur la partie de la surface de support (35) adjacente à la paroi (17).
4. Comptoir de service (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément réfrigérant (37) comprend un agencement de tuyaux (47) prévus sous la surface
de support (35) pour refroidir le présentoir (12) de manière répartie sur le présentoir
(12), où un espacement entre des tuyaux adjacents (47) est plus petit dans la deuxième
partie réfrigérante (41) que dans la première partie réfrigérante (39).
5. Comptoir de service (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la première unité de réfrigération (15) comprend une entrée (19) s'étendant dans
la paroi (17), laquelle entrée (19) est configurée pour conférer une composante descendante
dans l'espace de présentation (11) au gaz à souffler dans l'espace de présentation
(11) pour réfrigérer les produits présents dans l'espace de présentation (11) lors
de l'utilisation par le haut.
6. Comptoir de service (1) selon la revendication 5, caractérisé en ce que des éléments de guidage de gaz (21) sont prévus au niveau des entrées (19) pour guider
le gaz à fournir jusqu'à l'espace de présentation (11) dans une direction souhaitée.
7. Comptoir de service (1) selon la revendication 5 ou 6, caractérisé en ce qu'une sortie (23) est prévue dans la paroi (17) sur le côté de l'entrée (19) loin du
présentoir (12) pour évacuer le gaz présent dans l'espace de présentation (11) de
l'espace de présentation (11).
8. Comptoir de service (1) selon la revendication 7, caractérisé en ce qu'un ventilateur (25) est prévu sur le côté de la sortie (23) loin de l'espace de présentation
(11) pour évacuer le gaz de l'espace de présentation (11), où un axe de rotation du
ventilateur (25) s'étend de manière sensiblement parallèle à la paroi (17).
9. Comptoir de service (1) selon la revendication 7 ou 8, caractérisé en ce que la sortie (23) est reliée, pour l'écoulement de fluide, à l'entrée (19) par un premier
évaporateur (29), où le premier évaporateur (29) est configuré pour refroidir le gaz
à fournir à l'espace de présentation (11) par évaporation d'un réfrigérant.
10. Comptoir de service (1) selon la revendication 9, caractérisé en ce que le premier évaporateur (29) est configuré comme un évaporateur à contre-courant qui
est configuré pour fournir un écoulement de gaz descendant du gaz refroidi à fournir
à l'espace de présentation (11) par l'entrée (19) et un écoulement ascendant de réfrigérant
présent dans le premier évaporateur (29).
11. Utilisation d'un comptoir de service (1) selon l'une quelconque des revendications
1 à 10, caractérisée en ce qu'un réfrigérant est fourni à la première unité de réfrigération (15) pour refroidir
le gaz à fournir à l'espace de présentation (11) et/ou à la deuxième unité de réfrigération
(33) pour refroidir la surface de support (35), où le réfrigérant a une température
comprise entre - 30°C et -2°C, de préférence entre -8°C et -2°C, plus préférablement
entre - 6,5°C et -5,5°C.