DE102013013736B4 - Compact tray - Google Patents

Abstract

Compact tray for the simultaneous cooling and keeping warm of food and drinks portioned in side dishes, bowls, plates and cups for hospitals, care facilities, homes, hotels, catering services, with an upper part (2) and a lower part (3), each one with insulating material made of plastic foam filled, by an upper and lower shell (16,17; 23,24) enclosed cavity (18.1,18.2), wherein in the lower part (3) adapted to the size and shape of the side dishes, bowls and plates, upwardly open shelves (4, 5, 6), which in the upper part (2) are assigned correspondingly downwardly open formations (20,21,22), the upper part (2) being arranged to cover the lower part (3), characterized in that, that the shelves (4,5,6) in the lower part and the associated formations (20,21,22) in the upper part (2) in at least one cooling area (11) equipped with a cooling core (13) and in at least one with a heat accumulator ( 12) b equipped warming area (10) are combined separately from one another, the warming area (10) from the cooling area (11) by at least one web (30, 38) on the upper shell (23) of the lower part (3) and at least one between a web (30, 38) surrounding the respective area a shoulder (63,64) on the lower shell (17) of the upper part (2) formed sealing surface (65,66) is thermally decoupled.

Description

The invention relates to a compact tray for the simultaneous cooling and keeping warm of food and drinks portioned in side dishes, bowls, plates and cups for hospitals, care facilities, homes, hotels, catering services, with a lower part and an upper part, each of which is filled with insulating material made of plastic foam, each have an upper and lower shell enclosed cavity, wherein in the lower part to the size and shape of the side dishes, bowls and plates adapted, upwardly open shelves are formed, which are associated with downwardly open formations in the upper part, the upper part on the The lower part is arranged covering.

State of the art

A large number of solutions are known from the prior art, with the help of which either the food is kept warm ( EP 1 202 656 B1 , DE 196 27 522 A1 , DE 25 01 427 A1 , DE 26 09 518 B1 , DE 10 2011 018 711 A1 , EP 072 337 B1 , DE 2 039 459 A1 ) or cooled ( EP 461 549 B1 , U.S. 2,810,276 A , DE 91 13 957 U1 , "Temp-Royal" brochure from temp-rite International).
Another known warming dish ( DE 1 753 152 A ) the lower part and cover are double-walled and thermally insulated, the walls, in particular the inner walls, being made of thin plastic and the space between the outer and inner walls being foamed with a rigid plastic foam of low specific weight adhering to the walls.
From the DE 25 24 708 A1 , DE 25 43 666 A1 . DE 199 09 406 A1 , DE 91 04 999 U1 , EP 0 310 698 A1 , Prospectus Stierlen - System dishes are known other solutions for keeping food warm, each using an insulation of the goods to be kept warm.
Another known solution (CH 449 874) achieves keeping warm by means of an additional heat storage device for receiving the amount of heat required to keep the food warm, which is surrounded by a lower part and a cover for thermal insulation that covers the lower part.
The state of the art makes use of the prior art for cooling or keeping food cool over a longer period of time in a warm environment EP 0 461 549 B1 a lower tray member including a lower plate of a given size and shape and a lower edge wall protruding upward from the peripheral edge of the lower tray, an upper tray member that mates with the lower tray member, and a serving platen held at a predetermined distance above the lower tray and an upper side wall protruding upwardly above the serving plate and engaging the lower edge wall around the peripheral edge of the two plates with the lower and upper tray members defining a chamber therebetween. The upper tray element is attached to the lower tray element and together with it forms a sealed main gel chamber which is filled with a cooling gel. The cooling gel consists of 75 to 85 wt .-% water, 1 to 5 wt .-% acrylic polymer, 1 to 5 wt .-% potassium sorbate, 0.1 to 0.5 wt .-% sodium tetraborate, 1 to 5 wt .-% % Carboxymethyl cellulose, 10 to 20% by weight of polyethylene glycol, 5 to 10% by weight of corn starch and 1 to 5% by weight of triethanolamine.
All of these known solutions have the disadvantage that either the food can only be kept warm or cold. Bottoms and tops that are specially adapted to the respective application are always required to accommodate the corresponding plates for the food. For hospitals, homes and nursing homes, this means costly and time-consuming storage and cleaning of system dishes. Since the system dishes also vary greatly in size, shape and handling, considerable machine and energy costs are incurred for cleaning as well as expenses for transport.

From the U.S. 4,182,405 A A device is also known with which the food can be kept warm and at the same time cooled off, the plates with the food being placed next to one another on a flat tray and each covered by a separate insulating hood. In or on the flat tray body, a heat insert is integrated or fastened to keep the food warm, which is positioned under the plate receiving the food and which uses induction to generate the heat.
The hood, which covers the food to be kept cold, has a heat-absorbing insert that is able to absorb larger amounts of heat from the air, so that a heat sink is created above the food.
This known prior art has the disadvantage that the capacity of the heat insert inserted into the body of the flat tray is extremely limited by the thickness of the tray alone and is dependent on an electrical energy source. The effect of the heat-absorbing insert is also limited because the cooling takes place exclusively through convection of the air.
The warming times of at least 2 hours and cooling times of 6 hours, which are mainly required in hospitals, cannot be achieved with this.
In addition, this known device consists of separately designed insulating hoods, which make handling more difficult and make cleaning more expensive.
Another disadvantage is that only one plate can be warmed or cooled at a time.

From the DE 10 2011 018 711 A1 is a transport and serving unit for food with a lower shell made of a thermally insulating material, which encloses at least one upwardly open lower receiving space, and an upper shell made of a thermally insulating material, which has at least one receptacle for a plate, a bowl or a Bowl encloses. A tray is provided which can be arranged at least in sections between the lower shell and the upper shell and which has at least one receptacle for a plate, a bowl or a bowl. Simultaneous cooling and keeping warm is not possible with this solution.
Furthermore, from the U.S. 4,386,703 A discloses a dining serving and storage tray for use in a cupboard. This well-known food serving and storage tray cannot itself be used for cooling and keeping warm.
The prior art also includes DE 10 2004 034 154 A1 , WO 2006/045 329 A1 , DE 101 40 832 A1 and the US 2013/0 008 909 A1 all of which do not fulfill the function of a tray for cooling and keeping warm at the same time.

Task

In this prior art, the invention is based on the object of providing a compact tray for simultaneous hot and cold keeping of several different dishes placed on the tray, which allows a simultaneous hot and cold keeping function by liquid media over a long period of time, food-specific with low costs, easy handling during transport and cleaning guaranteed.

This object is achieved by the features of claim 1.
Advantageous embodiments of the compact tray according to the invention can be found in the subclaims.

The solution according to the invention is based on the knowledge that the food to be kept cool with a cooling core stored in the cooling area and the food to be kept warm with a heat accumulator stored in the warming area in separate shelves in a tray and these areas are thermally insulated or decoupled from one another.

This is achieved in that the shelves in the lower part and the associated formations in the upper part are combined separately from one another in at least one cooling area equipped with a cooling core and in at least one warming area equipped with a heat accumulator, the warming area from the cooling area by at least one between one of the respective Area surrounding web on the upper shell of the lower part and at least one shoulder formed on the lower shell of the upper part sealing surface is thermally decoupled.

A preferred embodiment of the invention provides that the cooling core is designed as an upwardly open hollow body composed of upper and lower shells with longitudinal walls and end walls protruding from the upper and lower shell, which extend the outer walls of dessert and side dish dishes up to a wall height at least 50% so that a direct heat transfer from the cooling core to the outer walls of the dessert and side dish dishes filled with food is guaranteed.

In a further embodiment of the invention, the hollow body has a filler neck which is formed on the front between the upper and lower shell and can be closed with a stopper, through which the hollow body can be filled with a coolant, for example cooling gel, the web molded into the upper and lower shell forming the hollow body divides into two trough-shaped areas for even filling of the hollow body.
The coolant consists of a food-grade mixture of 1,2-propanediol, powdered methyl cellulose, bitter substance and water.

In a preferred embodiment of the compact tray according to the invention, the cooling area is divided into at least one first stand area and at least one additional stand area for storing dessert and side dish dishes of different shapes and sizes, which makes it possible to equip the cooling area with different dishes.

According to an expedient further preferred embodiment of the invention, a web arranged transversely to the longitudinal walls is formed in the upper and lower shell of the cooling core, which divides the upper shell into the first and a second standing area, each of these standing areas with in the longitudinal and transverse direction of the Hollow body extending bar-shaped ribs are provided for the safe depositing of the dessert bowls.
It is of particular advantage that the longitudinal walls are provided with bulges that run approximately perpendicular to the upper shell, which are arranged in mirror image to one another and are assigned to the first and second base in such a way that each round dessert bowl can be held securely, which means that the bowls slip during transport excluded and one extensive utilization of the storage capacity of the stand areas is ensured.
The end walls have recesses on their upper edge which make it easier to grasp the dessert bowls when they are set down or removed.

In a further preferred embodiment of the invention it is provided that the warming area has a first receptacle for the heat accumulator for storing the plate or the bowl and a further receptacle for the side dish, the receptacles communicating with one another through an overflow opening for heat exchange.

In an expedient further embodiment of the invention, the first receptacle of the warming area provided for the plate or the bowl is formed from a side surface widening conically in the direction of the upper part and a circular bottom surface, with heat conduction channels being formed in the bottom surface, which widen out radially from the center of the bottom surface run in the direction of the side surface, and heat conduction depressions are formed in the side surface, which are assigned to the direction and shape of the heat conduction channels, so that the heat is distributed on the outer wall of the plate or bowl and an even warming is ensured.

The additional receptacle of the warming area serving for the side dish is formed from an essentially vertical boundary surface and an approximately circular base surface, supply channels being provided in the boundary surface which are connected to an annular distribution channel formed in the base surface, in which the Heat conduction channels formed in the bottom surface open out, which widen from the center of the bottom surface in a cross-like manner in the direction of the boundary surface, whereby the heat of the heat accumulator that is not used in the first receptacle passes through the overflow opening and is evenly distributed over the supply channels, distribution channel and heat conduction channels to the outer wall of the side dish.

To keep the food warm, a heat storage device is provided on which the plate or bowl with food is arranged. The heat accumulator consists of a stainless steel hollow body filled with a heat transfer medium, for example hot wax, the outer edge area of which rests on a shoulder of the side surface of the first receptacle so that the stainless steel hollow body is freely suspended without touching the bottom surface.

In a preferred embodiment of the invention, the webs formed on the upper shell of the lower part for the warming and cooling area are arranged so as to protrude in the direction of the upper part, the webs appropriately designed in shape and size in the lower shell are assigned such that webs and shoulders can each form the sealing surfaces.
Alternatively, in a further embodiment of the invention, the webs on the lower shell can be arranged protruding in the direction of the lower part, the webs being assigned appropriately designed shoulders in shape and size on the upper shell such that webs and shoulders can form the sealing surfaces.
In an advantageous further embodiment of the invention, the webs and the associated shoulders of the cooling area and the warming area, which directly adjoin one another, form a tongue and groove seal with sealing surfaces located one behind the other.

This ensures that the warming area is largely thermally decoupled from the cooling area, so that the required warming and cooling times of the food are guaranteed or even exceeded.

For the stackability of the compact tray according to the invention, it has proven to be particularly advantageous that stacking ribs are formed on the upper shell of the upper part and stacking grooves are formed in the lower shell of the lower part, which are adapted to the shape and dimensions of the stacking ribs and which correspond to the shelves of the holding element. and cooling holding areas are arranged on the upper shell and lower shell, respectively.

Particularly suitable materials for the upper part, the lower part and the cooling core of the compact tray according to the invention are plastics, preferably polypropylene.

Further advantages and details emerge from the following description with reference to the accompanying drawings.

Figure list

The invention will be explained in more detail below using an exemplary embodiment.

• 1 eine perspektivische Darstellung des erfindungsgemäßen Kompakttabletts,
• 2 eine perspektivische Explosionsdarstellung des erfindungsgemäßen Kompakttabletts nach 1,
• 3 eine perspektivische Draufsicht des Oberteils des erfindungsgemäßen Kompakttabletts,
• 4 eine perspektivische Unteransicht des Oberteils des erfindungsgemäßen Kompakttabletts,
• 5 einen Schnitt entlang der Linie A-A nach 3,
• 6 einen Schnitt entlang der Linie B-B nach 3,
• 7 eine perspektivische Draufsicht des Unterteils des erfindungsgemäßen Kompakttabletts,
• 8 einen Schnitt entlang der Linie C-C nach 7,
• 9 einen Schnitt entlang der Linie D-D nach 7,
• 10 eine perspektivische Unteransicht des Unterteils des erfindungsgemäßen Kompakttabletts,
• 11 eine perspektivische Darstellung des Unterteils mit in die Ablagen eingesetzten Speisebehältnissen,
• 12 einen Schnitt entlang der Linie E-E nach 11,
• 13 eine perspektivische Draufsicht des Kühlkerns und
• 14 einen Schnitt entlang der Linie F-F der 13,
• 15 einen Schnitt entlang der Linie G-G nach 1.
• 16 eine Schnitt entlang der Linie H-H der 1 und
• 17 die Schnittflächen von Ober- und Unterteil des erfindungsgemäßen Kompakttabletts nach 15.

Show it:

• 1 a perspective view of the compact tray according to the invention,
• 2 a perspective exploded view of the compact tray according to the invention 1 ,
• 3 a perspective top view of the upper part of the compact tray according to the invention,
• 4th a perspective view from below of the upper part of the compact tray according to the invention,
• 5 a section along the line AA 3 ,
• 6th a section along the line BB 3 ,
• 7th a perspective top view of the lower part of the compact tray according to the invention,
• 8th a section along the line CC 7th ,
• 9 a section along the line DD 7th ,
• 10 a perspective view from below of the lower part of the compact tray according to the invention,
• 11 a perspective view of the lower part with the food containers inserted into the shelves,
• 12th a section along the line EE 11 ,
• 13th a top perspective view of the cooling core and
• 14th a section along the line FF of 13th ,
• 15th a section along the line GG 1 .
• 16 a section along the line HH of the 1 and
• 17th the cut surfaces of the upper and lower part of the compact tray according to the invention 15th .

The 1 and 2 show the compact tray according to the invention 1 that consists of a top 2 and a base 3 is formed from injection molded polypropylene. The lower part 3 is with trough-like shelves 4th , 5 , 6th , 7th and 8th For example, plates, bowls and bowls of different sizes and shapes are provided to accommodate different food containers. The cutlery tray is used to hold the cutlery 9 .
The shelves 4th and 5 are for hot liquid or solid food and the shelves 6th , 7th and 8th intended for cold food or drinks, with the shelf 4th and 5 the warming area 10 and the shelf 6 form the cooling area 11. Filing 7th and 8th serves, for example, to hold a coffee cup or an egg cup.
One in the shelf 4th used heat storage 12th A hollow stainless steel body filled with hot wax supplies the heat for the food to be kept warm and one in the shelf 6th discarded cooling core 13th serves to cool the food.

The 3 shows the top 2 of the compact tray according to the invention 1 that emerges from an upper shell 16 and a lower shell 17th composed. The upper shell 16 and lower shell 17th are joined together in such a way that the outer edge of the upper shell 16 the outer edge of the lower shell 17th overlaps and is firmly connected to this. Upper shell 16 and lower shell 17th form a cavity 18.1 (please refer 5 and 6th ), which is filled with a thermal insulation material, for example fine-pored polyurethane foam.
The upper shell 16 of the top 2 has stacking ribs on its top 19th that rise from the top and conform to the outline of the shelves 4th , 5 and 6th run away.

In the lower shell 17th of the top 2 are like 4th to 6th show-formations 20th , 21st and 22nd molded into the cavity 18.1 reach in and the warming area 10 and the cooling areas 11 according to the outline of the shelves 4th and 5 as 6th cover once the top 2 on the lower part 3 is put on. The formations 20th , 21st and 22nd and the associated shelves 4th and 5 as well as 6 thus form two thermally insulated receptacles for the food containers. The formation 22a closes the cutlery compartment 9 from.
From the 5 and 6th also shows that the above the cooling area 11 cavity filled with insulating foam 18.1 a thick one D1 having that opposite the thickness D2 above the warming area 10 is significantly larger.

In the 7th is an exemplary arrangement of shelves 4th to 8 in the lower part 3 shown. Just like the top 2 the lower part sits down 3 from an upper shell 23 and a lower shell 24 together showing a cavity 18.2 (please refer 8th and 9 ), which is filled with thermal insulation material, for example fine-pored polyurethane foam.
The upper shell 23 of the lower part 3 with its outer edge overlaps the outer edge of the lower shell 24 and is firmly connected to the latter.
The shelves 4th to 8th are in the upper shell 23 of the lower part 3 molded in such a way that they fit in between the upper shell 23 and lower shell 24 formed cavity filled with insulating foam 18.2 reach in (see 8th and 9 ). The fat D3 of the cavity filled with insulating foam 18.2 above the shelf is opposite the thickness D4 over the shelf 4th and 5 kept significantly larger.

The warming area 10 includes the shelf 4th and the shelf 5 in the lower part 3 and the corresponding formations 21st and 22nd in the top 2 . The shelves 4th and 5 are connected to each other through an overflow opening 25th connected for heat exchange.
Filing 4th thus forms a first recording 26th for a plate or a bowl. The recording 26th has a circular bottom surface 27 and one on the floor surface 27 Conical side surface widening upwards 28 , to which a horizontally encircling shoulder is attached 29 and one the warm area 10 bounding bridge 30th connects.
In the floor area 27 are heat conduction channels 31 molded in from the center of the floor area 27 like a ray in the direction of the conical side surface 28 run, with the width B. the heat conduction channels 31 increases outwards.
The heat conduction channels 31 are in the side face 28 slot-shaped thermal conduction depressions 32 assigned, which ensure that a heat flow in the direction of the horizontal circumferential shoulder 29 and the overflow opening 25th can take place.

Filing 5 serves to accommodate a substantially square-shaped side dish, for example for a soup that is also to be kept warm, and has a substantially vertical outer boundary surface 33 with a correspondingly shaped bottom surface 34 . The floor area 34 is of a ring-like distribution channel 35 bounded, the one hand with at the corners of the boundary surface 33 arranged feed openings 36 and on the other hand with in the floor area 34 molded heat conduction channels 37 is connected. The heat conduction channels 37 run from the center of the floor area 34 criss-cross outwards, with the width B. of the individual channels increases to the outside.
The bridge 30th is self-contained and runs along the entire warming area 10 towering towards the top 2 .

In the upper shell 23 of the lower part 3 are still the shelves 6th , 7th and 8th molded of which the shelf 6th a closed cooling area 11 forms. The shelves 7th and 8th serve, for example, to hold a cup and an ice cream.
Filing 6th is intended to hold round and / or square dessert bowls and has an elongated, substantially rectangular shape. As is the heat retention area 10 is the cooling area 11 the shelf 6th through a footbridge 38 enclosed, but on the front sides 39 the shelf recesses 40 to capture the in the tray 6th used cooling core 13th having.
The shelves 7th and 8th that from filing 6th spatially separated in the upper shell 3 of the lower part 3 are arranged have a bottom surface 41 , in the two circular recesses 42 and 43 are intended to hold the coffee cup and egg cup.

The lower shell 24 of the lower part 3 is like 10 shows with stacking grooves 44 provided in their position, shape and dimensions to the stacking ribs 19th on the upper shell 16 of the top 2 are adjusted so that the stacking ribs 19th into the stacking grooves 44 fit when stacking compact trays and enable safe stacking.

The 11 and 12th show the lower part 3 of the compact tray according to the invention 1 , its filing 4th or 5 with a warm bowl 45 and a side dish 55 and its filing 6th with dessert bowls that can be kept cold 46 are equipped. From the corresponding longitudinal section ( 12th ) along the line EE of the 11 becomes the location of the heat storage tank 12th and the cooling core 13th clear. The heat storage 12th is as a plate-shaped stainless steel hollow body 47 formed, which is filled with temperature-resistant wax. The stainless steel hollow body is used to keep the food warm 47 heated to temperatures of up to 130 ° C. The stainless steel hollow body heated in this way 47 is with its outer lower edge area 48 On the shoulder 29 the shelf 4th placed so that the stainless steel hollow body 47 hanging freely above the floor area 27 is arranged so that the from the bottom of the stainless steel hollow body 47 radiating heat through the heat conduction channels 31 Evenly distributed over the entire area through the overflow opening 25th the one in filing 5 discarded side dish 55 can be added for the soup. The one from the top of the stainless steel hollow body 47 radiating heat holds the bowl 45 with the main course warm to the temperature prescribed for consumption over a period of up to 2 hours.

It is now on the 13th and 14th Referring to the the cooling core 13th made of plastic, for example polypropylene, in a perspective view and in a sectional view. The location of the cooling core 13th in the shelf 6th is the 11 and 12th refer to. The cooling core 13th consists of an upper shell 49 and a lower shell 50 together, which together form a cavity 51 form, which with a cooling gel 52 is filled. The cooling gel ensures a cooling effect of 5 to 6 hours. The upper shell 49 and the lower shell 50 are shaped so that they are from the floor surface 14th of the cooling core 13th towering longitudinal walls 53 and end walls 54 form so that the outer walls of the dessert bowls 46 up to a wall height of at least 50% to a certain extent housed or enclosed, whereby a direct cooling effect on the outer walls of the bowls filled with dessert 46 can be guaranteed. In the upper and lower shell 49 and 50 of the cooling core 13th is each one across the longitudinal walls 53 arranged web 56 molded into the floor area 14th in a first stand 58 and a second stand 58 divides (see also 14th ). Each of these stand areas 57 and 58 is with rib-shaped ribs running in the longitudinal direction and transverse direction 59 Mistake. Ribs 59 are arranged in such a way that they prevent, for example, square dessert bowls from slipping 46 on the stand areas 57 and 58 safely prevent.
The two long walls 53 have bulges 60 which are arranged in mirror image to one another and each of the first and second standing surfaces 57 and 58 are assigned in such a way that each has a round dessert bowl 46 can be kept stable.
The longitudinal walls 53 and end walls 54 of the cooling core 13th are with an upper border all around 61 provided that as a towards the lower shell 50 recessed stepped heel 62 is trained. This stepped heel 62 depends on the shape and location of the bridge 38 the shelf 6th adjusted so that the bridge 38 and paragraph 62 lie tightly against each other, whereby a heat transfer to the outside is largely prevented.
Between the upper shell 49 and lower shell 50 is on the front wall 54 of the cooling core 13th a filler neck 15th molded through which the cooling gel 52 into the cavity 51 can be filled. A stopper, not shown, is used to close the filler neck 15th . Through the bridge 56 is the cavity 51 of the cooling core 13th in two tub-shaped areas 69 and 70 divided, creating an even filling with cooling gel without air inclusions 52 is guaranteed.
The dimensions and shape of the stand areas 57 and 58 of the cooling core are chosen so that dessert and side dishes of different sizes, shapes and dimensions can be placed. For example, it is possible to combine round and square dessert bowls next to each other.

The cooling gel consists of a mixture of 1,2-propanediol, powdered methyl cellulose, bitter substance and water. The pulverulent methyl cellulose and the bitter substance are added to the solution of water and the 1,2-propanediol while stirring until a liquid mixture is formed which can be poured into the hollow body and easily distributed.
The volume of the hollow body is dimensioned so that the cooling medium, after being cooled to a temperature of less than -18 ° C, has a sufficient cooling capacity to optimally cool the food for a period of up to 6 hours.

The 15th and 16 each show a section in the longitudinal direction and transverse direction of the compact tray according to the invention 1 without food containers, from which the thermal decoupling of the warming area 10 and the cooling area 11 becomes clear.
Both the warming area 10 as well as the cooling area is from one on the upper shell 23 of the lower part 3 towering bar 30th or. 38 circumscribed. The jetty 30th or. 38 is a paragraph adapted in shape and size 63 or. 64 assigned, each in the lower shell 17th of the top 2 are molded. Every bridge 30th or. 38 forms with the paragraph 63 or. 64 a sealing surface 65 or. 66 against the heat transfer between the cooling area 11 and heat retention area 10 .
The warming area 10 and the cool holding area 11 can in the longitudinal direction -like out 17th it can be seen- close together. In this area form the web 38 and the bridge 30th with the corresponding paragraphs a tongue and groove seal 67 with several consecutive sealing surfaces 68 , so that a heat transfer is largely prevented.
The compact tray according to the invention is thus designed so that the upper part 2 and lower part 3 it can keep food warm and cold at the same time. This enables uncomplicated, inexpensive and practical use of the compact tray according to the invention in the field of communal catering.

List of reference symbols

1

Compact tray

2

Top

3

Lower part

4, 5, 6, 7, 8

Shelves

9

Cutlery tray

10

Warming area

11

Cooling area

12

Heat storage

13th

Cooling core

14th

Floor area of 13th

15th

Filler neck from 13th

16

Upper shell of 2

17th

Lower shell of 2

18.1

Cavity of 2

18.2

Cavity of 3

19th

Stacking ribs

20, 21, 22, 22a

Lofts in 17th

23

Upper shell of 3

24

Lower shell of 3

25th

Overflow opening

26th

First inclusion in 10

26a

further inclusion in 10

27

Circular floor area of 26th

28

Conical side surface of 26th

29

Shoulder of 26th

30th

Bridge from 10

31

Heat conduction channels in 27

32

Thermal conduction depressions in 28

33

Boundary surface of 26a

34

Floor area of 26a

35

Distribution channel from 26a

36

Feed openings from 26a

37

Heat conduction channels in 34

38

Bridge from 6th

39

Face of 6th

40

Recesses in 38

41

Floor area of 7th , 8th

42, 43

Recesses in 41

44

Stacking grooves

45

Bowl / plate

46

Dessert bowls

47

Stainless steel hollow body

48

Outer edge area of 47

49

Upper shell of 13th

50

Lower shell of 13th

51

Cavity of 13th

52

Cooling gel

53

Longitudinal walls

54

End walls of 13th

55

Round side dish

56

web

57

First stand

58

Second stand

59

Ribs

60

Bulges

61

All around edge of 13th

62

Stepped heel from 13th

63, 64

Paragraph on 17th

65, 66

Sealing surfaces

67

Tongue and groove seal

68

Sealing surfaces from 67

69, 70

Tub-shaped areas

B.

Width of the heat conduction channels 31 , 37

D1, D2

Thickness of the cavity 18.1

D3, D4

Thickness of the cavity 18.2

Claims (17)

Compact tray for the simultaneous cooling and keeping warm of food and drinks portioned in side dishes, bowls, plates and cups for hospitals, care facilities, homes, hotels, catering services, with an upper part (2) and a lower part (3), each one with insulating material made of plastic foam filled, by an upper and lower shell (16,17; 23,24) enclosed cavity (18.1,18.2), wherein in the lower part (3) adapted to the size and shape of the side dishes, bowls and plates, upwardly open shelves (4, 5, 6), which in the upper part (2) are assigned correspondingly downwardly open formations (20,21,22), the upper part (2) being arranged to cover the lower part (3), characterized in that, that the shelves (4,5,6) in the lower part and the associated formations (20,21,22) in the upper part (2) in at least one cooling area (11) equipped with a cooling core (13) and in at least one with a heat accumulator ( 12) equipped warming area (10) are summarized separately from one another, the warming area (10) from the cooling area (11) by at least one between a web (30,38) enclosing the respective area on the upper shell (23) of the lower part (3) and at least a shoulder (63,64) on the lower shell (17) of the upper part (2) formed sealing surface (65,66) is thermally decoupled. Compact tray after Claim 1 , characterized in that the cooling core (13) is an upwardly open hollow body (51) composed of upper and lower shells (49, 50) with longitudinal walls (53) and end walls protruding from the upper and lower shells (49, 50) (54) which enclose the outer walls of dessert or side dish dishes (46, 55) up to a wall height of at least 50%. Compact tray after Claim 2 , characterized in that the hollow body (51) has a filler neck (15) which is integrally formed on the end face between the upper and lower shell (49, 50) and can be closed with a stopper, through which the hollow body (51) is supplied with a coolant, for example cooling gel, can be filled, the web (56) formed in the upper and lower shell (49, 50) dividing the hollow body (51) into two trough-shaped areas (9) for uniform filling of the hollow body (51). Compact tray after Claim 3 , characterized in that the coolant consists of a mixture of 1,2-propanediol, powdered methyl cellulose, bitter substance and water. Compact tray after Claim 1 , characterized in that the cooling area (11) is divided into at least one first standing surface (57) and at least one further standing surface (58) for storing dessert bowls (46) of different shapes and sizes. Compact tray after Claim 2 or 3 , characterized in that a web (56) arranged transversely to the longitudinal walls (53) is formed in each of the upper and lower shells (49, 50) of the cooling core (13), which the upper shell (49) in the first and second Dividing the standing area (57,58), each of these standing areas being provided with bar-shaped ribs (59) running in the longitudinal and transverse directions of the hollow body (51) for the secure placement of round dish dishes (55). Compact tray after Claim 2 , characterized in that the longitudinal walls (53) are provided with bulges (60) running approximately perpendicular to the upper shell (49), which are arranged in mirror image to one another and are assigned to the first and second standing surfaces (57, 58) in such a way that a round dessert bowl (55) is held stable. Compact tray after Claim 2 , characterized in that the end walls (54) have recesses (40) on their upper edge for gripping the dessert bowls (46) when they are set down or removed. Compact tray after Claim 1 , characterized in that the warming area (10) has a first receptacle (26) for the heat accumulator (12) for storing the plate or the bowl and a further receptacle (26a) for the side dish, the receptacles (26, 26a) for Heat exchange communicating with one another through an overflow opening (25). Compact tray after Claim 9 , characterized in that the first receptacle (26) of the warming area (10) is formed from a side surface (28) widening conically in the direction of the upper part (2) and a circular bottom surface (27), with heat conducting channels (27) in the bottom surface (27). 31) are formed, which extend radially from the center of the bottom surface (27) in the direction of the side surface (28), and in the side surface (28) there are heat conduction depressions (32) which are assigned to the heat conduction channels (31) in terms of direction and shape . Compact tray after Claim 9 , characterized in that the further receptacle (26a) of the warming area (10) is formed from an essentially vertical boundary surface (33) and an approximately circular bottom surface (34), supply channels (35) being provided in the boundary surface (33), which are connected to an annular distribution channel (36) formed in the bottom surface (34), in which heat conduction channels (37) formed in the bottom surface (34) open, widening in a cross-like manner from the center of the bottom surface (34) towards the boundary surface (34) ) run. Compact tray after Claim 2 , characterized in that the heat accumulator (12) consists of a stainless steel hollow body (47) filled with hot wax for keeping the food warm, the outer edge region (48) of which is on a shoulder (29) of the side surface (28) of the first receptacle (26) rests without touching the bottom surface (27). Compact tray after Claim 1 , characterized in that the webs (30, 38) of the warming area (10) and cooling area (11) formed on the upper shell (23) of the lower part (3) are arranged so as to protrude in the direction of the upper part (2), the webs (30 , 38) in shape and size in the lower shell (17) suitably formed shoulders (63,64) are assigned such that webs (30,38) and shoulders (63,64) can form the sealing surfaces (65,66). Compact tray after Claim 1 , characterized in that the webs (30, 38) are arranged on the lower shell (17) protruding in the direction of the lower part (3), the webs (30, 38) being adequately designed in shape and size in the upper shell (23) Paragraphs (63,64) are assigned such that webs (30,38) and paragraphs (63,64) can form the sealing surfaces (65,66). Compact tray after Claim 1 , characterized in that the webs (30, 38) and the associated shoulders (63, 64), which are arranged directly next to one another, form a tongue and groove seal (67) with sealing surfaces (68) located one behind the other. Compact tray after Claim 1 , characterized in that stacking ribs (19) are formed on the upper shell (16) of the upper part (2) and stacking grooves (44) adapted to the shape and dimensions of the stacking ribs (19) in the lower shell (24) of the lower part (3) ) are formed, which correspond to the shelves (4,5,6,7,8) of the warming and cooling holding area (10, 11) are arranged on the upper shell (16) and lower shell (24), respectively. Compact tray after Claim 1 , characterized in that the upper part (2), lower part (3) and the hollow body (51) of the cooling core (13) consist of plastic, preferably polypropylene.

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