FR2581513A1 - DOUBLE-WALK COLD CONSERVATIVE CONTAINER - Google Patents

Abstract

The container has an open top end and a closed bottom. It consists of an interior element 2 and an exterior element 3, the space 5 between these two elements being hermetically sealed from the outside and containing a predetermined quantity of cold-preserving agent 6. may freeze. A means of heat or cold transmitting fins 8 is disposed in the space 5 and maintained in contact with the outer peripheral surface of the inner container member 2 so as to ensure a uniform distribution of heat or heat. cold over the entire height of the container. (CF DRAWING IN BOPI)

Description

1.

  The present invention relates to a container con-

cold-walled double-walled servant

  In the prior art, a conventional device for

  making frozen confectionery made by hand, such as

  the ice creams comprises an outer container and an inner container located inside the previous one that permanently separates a certain game, and this game is filled with a plurality of pieces of ice to which has been added

  a certain amount of salt so that the container

  is cooled by ice, which: allows the product of manufacture of the frozen confectionery contained in the container

  inside to freeze while it is kept in the agitated state.

  With the method described above, the temperature of the

  pieces of ice that are about

  timers, to which 15% salt has been added, theoretically reaches 15 C, but the actual temperature is only about -5 C or more and, as the outer surface of the inner vessel is simply maintained by 2. points of in contact with the respective pieces of ice, the product contained in the inner container can not be cooled and frozen quickly and therefore it takes a long enough time for the confectionery to be completely frozen. In addition, the water resulting from the melting of the ice

  during the manufacture of confectionery degrades the quality

  the location where it is manufactured, and this has the result of making the confectionery confectionery unpleasant

icy.

  On the other hand, a device has been developed for the manufacture of frozen confectionery, in which

  to use ice, a closed container is used.

  meticulously, double-walled, in a receptacle intended for

  contain the product used in the manufacture of confit-

  and an appropriate amount of preservative is

  of cold in the space separating the elements of

  inner and outer container constituting the container.

  During use, the container is cooled in a separate refrigerator to freeze the coolant to a suitable temperature, and the cooled container is placed in the container.

  and the confectionery product is introduced

  in the container and shake it with appropriate means,

  which makes it possible to finish the making of the confectionery.

  But in a device of this type which has a double-walled container, since the freeze of the cold preservation age begins at its upper part

  to then progress down so that the concentration

  localization of the dilatation of this agent occurs at the lower end of the container, the container may

deform or be damaged.

  The object of the present invention is to avoid

  disadvantages described above of the device of the prior art

  during the production of an ice cream confectionery.

  3. Therefore, an object of the present invention

  is a new double-wall cold storage container

  calf and useful for the manufacture of frozen confectionery

  such as ice cream and sorbets, which is

  simple and inexpensive truction and able to produce easy and fast frozen confectionery high

  quality, and to keep them in an icy state, or to

  a bottle of wine or other liquid in a refreshing

  chi for a long time, without the previous frost

  the cold preservative does not cause the damage

  or deformation of the container.

  To this end, the present invention relates to a double-walled cold storage vessel, having an open top end and a closed bottom, having an inner container member and an outer container member, the space between the inner container member. and the outer container member being hermetically closed to the outside, and containing a predetermined amount of a cold preserving agent capable of freezing, at least one fin means for transmitting the heat or cold being disposed in the space separating the inner container member from the outer container member. The cold conserving container of the present invention has superior cold-transmitting qualities allowing rapid transmission of cold from

  the outside of the container inside it. In-

  thanks to the presence of a means of transmission fins

  of heat in the space separating the walls of the

  container, a uniform heat transmission over the entire height of the container is ensured, which prevents the freeze of the cold-preserving agent from occurring first at its upper part and then progressing downwards so that the local concentration of the expansion of this agent at the lower part of the container during its freezing and thus the damage or deformation of the container is avoided. It follows that the life of the container

of the invention is very long.

  In addition, the device of the present invention does not require any tedious manipulation of pieces

  of ice and can function while remaining clean by comparison

  its the device of the prior art o the ice melts.

  The inner container member and the outer container member are preferably made of fines

  aluminum plates with alumina coating or

  plastic material, and the upper edges of the elements are tightly folded against one another after being filled with the cold preservative

  the space separating the two elements. This helps to improve

  the transmission of cold through the

  inner container and the durability of the device.

  The cold preservative agent comprises

  water or carbonated water as a medium for

  with the addition of organic or inorganic salts such as: alcohol, glycol, ethylene glycol, polypropylene glycol, urea, ZaCl and the like, so as to establish its melting point

  in a range of about -5 ° C to -25 ° C, preferably

  between about -7 ° C. and about -17 ° C., and an organic viscosity-increasing agent can be added so as to obtain the appropriate viscosity of the reducing agent.

cold conservation.

  The present invention will be well understood when

  the following description made in connection with the drawings

attached in which:

  FIG. 1 is a partial view in longitudinal section.

  tudinal of the double-walled container of the invention

  a certain type of fin means for transmitting

heat; 5.

  FIG. 2 is a partial view in longitudinal section.

  tudinal similar to Figure 1, but representing a

  type of means of heat transfer fins; Fig. 3 is a perspective view, with a punctured portion of the construction of the double-walled container having the heat-transmitting fin means shown in Fig. 2; Figure 4 is a perspective view of the medium

  of heat transfer fins represented by

  gures 2 and 3; Fig. 5 is a perspective view similar to Fig. 4, but showing another type of heat transfer fin means; FIG. 6 is a partial sectional view of

  the construction of an aluminum brazing foil

  to be used in the realization of the

  inner container of the double-walled container so as to facilitate the welding of the fins on the outer surface of this element; Figures 7 - 9 are perspective views showing other types of heat transfer fins;

  FIG. 10 is a partial sectional view

  of the double-walled container which includes a

  type of means of heat transfer fins; FIG. 11 is a longitudinal sectional view showing the double-walled container, comprising a

  means of fins for transmitting heat on the surface

  outer face of the bottom of the inner container member of the double-walled container;

  Fig. 12 is a perspective view illustrating

  both a type of fin means of transmission of the chain.

  their intended on the outer surface of the bottom of the element

of inner container.

6. 2581513

  FIG. 1 represents an embodiment

  of the container of the present invention. The cylindrical container

  double-walled drique 1, consists of an element of

  inner container 2 and an outer container member 3, each having an open upper end and

  a closed bottom and made of thin sheet of aluminum on the-

  that alumina was applied. The upper extremities

  parts 2 and 3 are tightly closed

  closed by a pleating of the upper ends of

  re to form a seam 4, or a suitable clearance is maintained between the cylindrical walls and the bottom of the inner member 2 and the outer member 3, so that a

  space 5 is formed between these two elements.

  An appropriate amount of preservative 6

  The freezing cold can fill the space 5, with voids or air space 5a left at the top of the space, so that the container elements 2, 3

  are deformed by the dilation of the agent 6 at the

where it freezes.

  The onset of freezing of the cold preservative 6 tends to occur at its upper part and then progresses downward, the concentration of

  this agent during its freezing occurring in its lower part

  whereas the frozen part develops so that

  the local concentration of compressive forces is

  in the lower part of the agent 6.

  In the present invention, a means is provided

  of fins 8 of heat transmission, made of aluminum

  having a high thermal conductivity, in the space separating the cylindrical peripheral walls of the inner and outer container members 2, 3, which extends substantially over their entire height, the

  means of fins 8 abutting against at least the outer surface

  of the inner element 2 so that one obtains

  a uniform heat transmission over the entire

  the cylindrical peripheral surface of the element.2.

7 2581513

  The presence of the fin means 8 greatly reduces

  temperature gradient occurring between the upper part of the inner element 2 and the bottom, this

  which avoids the local concentration of dilatation

  the agent 6 at the lower end of the inner container 2 during its freezing, so that the local concentration of compressive forces at the lower end of the element 2 is reliably prevented and avoided. the

  deformation or damage of the element 2.

  The means 8b of transmission fins of the chain

  shown in FIG. 2 comprises a plurality of

  spaced apart from each other by the same distance

  turn of the outer surface of element 2 and extending

  radially from this surface, with the inner edges

  linked to the outer surface, while the outer edges are spaced a short distance from the inner surface of the outer member 3. The fin means 8b comprises an aluminum corrugated plate having

  sharp edges that are mounted around the outer surface

  of the inner container member 2, with the inner edges connected to the outer surface of

  Element 2, as shown in Figures 3 and 4.

  FIG. 1 shows a variant of the fin means 8a comprising a plurality of fins, but where the outer edge of each fin is connected.

  on the inner surface of the outer container element

3.

  Figure 5 shows another form of the fin means 8c. The fin means 8c is similar to that shown in Figure 4, but this means is formed so

  that the respective ridges have a rounded shape.

  In order to facilitate the joining of these means

  of fins with the outer surface of the recess element

  2, the fin means or the element 2 "may consist of a brazing sheet 9, as shown in FIG.

  represented in FIG. 8, coated with a sheet of material

  8. weld riau. To bond the fin means to the inner container 2, the welding operation is carried out with

  solder containing a flow in KF and AlF3. In this case, no

  cleaning or washing of the parts to be assembled

  no need to scratch the assembled parts, while the welding operation is

greatly facilitated.

  Figures 7 to 9 show various variances

  separately formed fin means 8d, 8e, 8f having a plurality of holes therein arranged to allow the free circulation of the cold preserving agent to improve the distribution of heat or cold over any the height of the container element

inside 2.

  The flat portions 8g of the fin means represent

  shown in Figure 9 are intended to be related to the over-

  outer face of the inner container member 2, this

  which improves the cooling.

  Figure 10 represents yet another form

  of fin means 8h, consisting of a transmission plate

  of heat in the form of a coil of

  square structure which extends in the vertical direction and

  a number of holes in order to improve the distribution

  heat or cold throughout the height of

  the inner container element 2. As described above,

  Since the freeze of the cold preserving agent 6 tends to start at the top and then gradually lower, the local concentration of the agent 6 expansion will occur in its lower part. Therefore, it is preferred to provide a sheet

  7 flexible, in the form of air bags, as shown in Figure

  12, at the bottom of the outer container element 3 which will absorb the local concentration of the compression

at the contraction of the bags 7a ...

9 581513

  9. Figures 11 and 12 show the fin means 8i for abutting against the outer surface

  bottom of the inner element 2, and consisting of a

  that of disk-shaped heat transmission in which a plurality of annular ribs have been formed

  concentric 8j. The shape of the ribs 8j can be

  and, on the other hand, the fin means 8i can be replaced by a plurality of separate fin pieces. The fin means 8i serve to provide a uniform distribution of heat or cold over any

  the bottom surface of the inner container member 2.

  As previously described, the means of

  and the pieces of fin can greatly avoid the concentration of the expansion of the cold preservative 6 at the bottom of the double container

  wall 1 during its freezing and, consequently, the concentration

  compression forces occurring at this part

  and therefore the deformation and damage of the container.

  In the present invention, a coating of

  non-adhesive sine 2a such as a fluorine resin coating and a silicone resin coating is provided on

  the inner surface of the inner container member 2.

  The coating 2a makes it easy to extract or scrape

  confectionery, adhering to the inner surface of the element 2 when it is completely frozen, so that we can avoid damage that would otherwise occur in the inner surface of the element 2 during this operation

scratching.

  The non-adherent coating 2a is prepared in accordance with

  firstly plucking the material such as fluorine resin

  and the silicone resin on the inner surface of the element

  2, then sintering it. 10. Alternatively, the coating 2a can be formed into

  first injecting alumina in the molten state onto the surface

  this interior of the inner container element 2 of

  to form a layer of alumina having a surface area of

  and then applying the resin coating 2a to the rough surface of the alumina layer and proceeding

to its sintering.

  Layer 2a can also be formed by

  first sand-blasted the interior surface

  re of the inner container element 2 and then applying

  the resin layer 2a and then frying it

floor.

  As described above, the layer 2a serves to re-

  greatly increase the gluing power of ice cream confectionery

  on the inner surface of the inner container member 2 so that the handling or removal of the confectionery is made easier, thereby

  not to damage this surface; Moreover, we can reduce

  re the time required to make the confectionery because it can be completely extracted from the inner surface of the element 2, thus allowing a good conduction of heat or cold between the double-walled container 1 and the product introduced, because it can not be degraded

  by bonding its residue whose thermal conductivity

that is weak.

11.

EXAMPLE 1

  Conditions Thickness of inner and outer container elements 2, 3 = 0.7 mm Volume of space 5 between outer and inner container elements 2,3 = 500 cm Volume of preservative 6 of cold 3 = 430 cm

(fill rate

  wise 86%) Melting point of the + cold preservation agent 6 = -12 2 "C Refrigerator temperature = -18 - 2 C Refrigeration time = 6 - 1 hours Product for making frozen confectionery = raw cream 200 cm3; 2 eggs g sugar 80 g Product temperature = 8 - 1 C Results Production time: Temperature Time Gentle cream -2 "C 8 2 mn Ice -3,5 C 25 - 5 mn

  It has been shown that the filling rate of the space

  this with the cold storage agent 6 must be equal to or greater than 75%. We can fill space 5a using

an inert gas instead of air.

  It has also been shown that the melting point of the cold preserving agent 6 is preferably set in the range between -70 ° C. and -17 ° C. for a refrigerator temperature of -18 ° C., whereas it is impossible to obtain good results when the melting point is

equal to or greater than -6 C.

  The present invention makes it possible to obtain a

  ice cream confectionery manufacturing process requiring 12.

  that a very short time for its realization and a manipulation

  easy lation and repetitive use in one location

remaining clean.

  Thanks to the capacity of the conservation officer

  cold, it is possible to maintain the complete confectionery-

  chilled in the container, at a low and constant temperature for a long time, and frozen confectionery

  may retain its taste until the custodian

  The cold does not lose its effect by the dissipation of the cold.

  On the other hand, it is possible to set the time required to freeze the cold preservative, as well as the amount of time that the finished ice cream confections can be kept frozen, by simply adjusting the temperature. amount of cold preservative dumped into the space separating the walls of the inner and outer container members, thereby

  to achieve remarkable efficiency.

  The present invention is not limited to the examples

  embodiments that have just been described, it is on the contrary susceptible of modifications and variants

  which will appear to those skilled in the art.

13.

Claims (7)

  1. Double-pack cold storage container   king having an open upper end and a closed bottom   characterized in that it comprises a rectification element   inner container (2) and an outer container member (3), the space (5) between the inner container member and the outer container member being hermetically sealed to the outside, and containing an amount   a predetermined cold storage agent (6) can   to freeze, at least one means of transmission fins (8> of heat or cold being disposed in space   (5) separating the inner container member (2) from the outer container (3).   2. Container according to claim 1, characterized   in that the transmission fin means (8)   extends substantially over the entire height of the   container and is kept in contact with at least the surface   this outer peripheral of the inner container element   in order to ensure a uniform distribution of the   heat or cold over the entire height of the container.   Container according to one of claims 1   or 2, characterized in that the means of transmission fins   mission (8) has a plurality of holes arranged to allow the free flow of the preservative cold.   4. Container according to one of the preceding claims   cedentes, characterized in that it further comprises   least one means of fins disposed in the part of the space   this (5) located at the bottom of the container.   Container according to one of the preceding claims   cedeentes, characterized in that the inner (2) and outer (3) container elements are made of thin sheet metal   of aluminum on which alumina was applied. 14.   Container according to one of claims 1 to   4, characterized in that the fin means (8) or the outer container element (3) consist of a   brazing sheet (9) coated with a sheet (10) of weld riau.   Container according to one of the preceding claims   cedeentes, characterized in that it is cylindrical in shape.