CA1227048A - Machine for making icecream and similar cold products, having a removable icecream-making vessel - Google Patents
Machine for making icecream and similar cold products, having a removable icecream-making vesselInfo
- Publication number
- CA1227048A CA1227048A CA000454363A CA454363A CA1227048A CA 1227048 A CA1227048 A CA 1227048A CA 000454363 A CA000454363 A CA 000454363A CA 454363 A CA454363 A CA 454363A CA 1227048 A CA1227048 A CA 1227048A
- Authority
- CA
- Canada
- Prior art keywords
- icecream
- chamber
- slot
- making
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
- F25D31/006—Other cooling or freezing apparatus specially adapted for cooling receptacles, e.g. tanks
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
- A23G9/04—Production of frozen sweets, e.g. ice-cream
- A23G9/08—Batch production
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G9/00—Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor
- A23G9/04—Production of frozen sweets, e.g. ice-cream
- A23G9/08—Batch production
- A23G9/12—Batch production using means for stirring the contents in a non-moving container
Abstract
ABSTRACT
An icecream-maker is described in which the icecream-making vessel can be inserted in and removed from a substantially cylindrical cooling chamber with a circular cross-section which is not completely closed on itself due to the presence of a slot extending along a generatrix.
The side wall of the chamber includes an outer layer, a stratum of elastically-yielding material, and ducts for circulating a refrigerant fluid; means are provided for enlarging the chamber by widening the slot against resilient means. Effective contact between the ducts for circulating the refrigerant fluid and the icecream-making vessel is always ensured in such a machine and its performance is therefore optimised.
An icecream-maker is described in which the icecream-making vessel can be inserted in and removed from a substantially cylindrical cooling chamber with a circular cross-section which is not completely closed on itself due to the presence of a slot extending along a generatrix.
The side wall of the chamber includes an outer layer, a stratum of elastically-yielding material, and ducts for circulating a refrigerant fluid; means are provided for enlarging the chamber by widening the slot against resilient means. Effective contact between the ducts for circulating the refrigerant fluid and the icecream-making vessel is always ensured in such a machine and its performance is therefore optimised.
Description
n_c IPTION
Tlle present in~ention relates to a machine for ~nakLrlcJ
icecream and similar cold products, of the type havillc3 a removable icecream-making vessel and including a suppor~
structure with a base housi.ng surmounted by a substantiAlly cylindrical cooling chamber for receiving the removable icecream makin~ vessel.
In the follo~ing description and in the subsequent clainls, the expression icecream-making vessel is used to identify a container, generally of stainless steel, in which the chosen ingredients of the icecream to be made are mi~ed by a special rotary tool with a scraping blade, the contairler being cooled externally by means of a suitable cooling circuit. Naturally, such a container, and also the cooling chamber i.n which it is.adjustably locatable, may he lS cylindrical, conical or in the form of any other body o~ revolution, but just for the purpose of non-limiting .. example the following description and subsequent claims will refer only to a cylindrical container and respective cyl.i~drical chamber.
In an icecream-making machine, the removability of the icecream-making vessel allows:
- easy and rapid removal of the icecrea~ by simple overturning of the vessel;
- easy, quick andlthorough washing of the vessel , whi~h, to advantage , may be carried out away from the electrical parts and~or other working parts of th~
icecreant-making machine;
- very short down-times betweell two s~ccessive operatillg cycles, even when the icecream-making machine has only 3~ .one icecrectm-making vessel.
'' Machines proposed and made up to now are o~ t~o basic types and, specifically, are machines in ~/hich the d~ct:s for the coolant liquid constitute an up~ardly-flared conical chamber into which and from which an icecrearn-making vessel with the same conical taper can he insertedand removed. ~i-th regard to the taper, this is designed accurately to ensurean effective and essential contact between the duct portions and the outer wall of the ice-cream-makins vessel,but in practice the con~act hardly occurs at all for a large number of these portions ~or a cornbination of technical and technological reasons such as: small manufacturing erxors in the ducts~ deformability of the material (generally copper) from ~hich the ducts are formed and hence the presence of deforma~ions due to bumps or bashes, accidential pressure durinq assembl~
oruse of the machine, slight yielding of the supports for the ducts, ~tc. It is known that, wherever good contact does not occur between the cooling ducts and the ~all of the icecream-making vessel, frost or ice forms and results in a considerable loss Qf frigories (a clear dèterioration in performance).
In another type of icecream-ma~ing machine, the cooling ducts surround an auxiliary receptacle containing brine in which the icecream-making vessel is inmersed. The disadvantayes of this type of machine are linked part-icularly to the considerable constructional complexities, to sealins problems, to the requirements of careful main--tenance and monitoring of the auxiliary receptacle to prevent even the slightest loss of brine ~hich could 3~ irreparably damage the ~orking parts of the machine an~l, not least, the laborious handling required fol operating it. The combination of all th2se disadvantages is s~ch that maci-ines of the type considered have foun~ even mo~e limited use in the industrial field.
t~( b~.r~
The problem thus exists of overcon~ g the a~oresaid clis--advantage o~ the prior art by rna~ing available an ice-cream-making machine with structural and functional characteristics such that, besides ~emovability of the icecream-making vessel, effective contact between all the portions of the cooling duct and the outer wall of tile vessel is al~Jays ensured without in any way hindering the removability.
As a solution to this problem, the Applicant has proposed a machine in which the icecream-making vessel can be inser-ted into or removed from a cooling basket constitu~ed by two halves which can be opened to receive the vessel and can be clamped around it. The coolin~ coil which constitutes the basket can yield resiliently in a direc-tion radially of the basket itself.
The object of the present invention is to provide a machinewhich solves the aforesaid problem while ensuring a better thermal efficiency with a more compact structure than that already proposed.
This object is achievedr according to the present invention, by a machine of the said type, which is characterised - in that at least the side wall of the chamber has a circular cross-section ~hich is not completely closed on itself due to the presence of a slot extending along a generatrix, and includes an outer substantially cylindrical layer, a stratum of elastically-yielding material fi~:ed inside the layer, ducts for circulatin~
the refrigerant fluid fixed within th~ stratum, and m~ans from for enlarging the chamber by widening the slot against resilient means.
To advantage, th~ chclmher is mou!.ted on the bac;e ho;l!,ing by means ~f a first vertical pin located in corre~,orlcl-ence with the slot and a secon' ~ertical pin located i a diametrall~ opposite position.
S An icecream-~aking machine accor~in~ to the inventioll is further characterised in that the resilient rneans al-e constituted by the said layer, whicil is made of spring steel.
The more considerable advantages achieved by the m~chine of the invention are:
- the ease and rapidity with which the icecream-ma~ing vessel can he inserted into ar.d removed from the respective chamber, the cooling cha.~rber being kept cnlarged.
Consequently, it is possible to achieve a combination of all the advantages relating to the removability of the icecream-makiny vessel.
- the eIfective contact which is always en~urec~ between each cooling duct and the outer wall o-f tie icecream-making vessel~ In fact, such a contact is ensured by the resilient reaction o~ the layeL on each duct pas~ing through the stratum of yielding material.
Further characteristics and advantages will hecome clearer from the description of one embodiment of an icecreclm-making machine according to the invention, which follows with reference to the appended dra-~ings g~ven purely by way of non-limiting example.
In the drawlngs:
~ ~7(~4~
Figure 1 is a scherncltic vertical sectiorlal view of an icecream-~a~iny machine accorcling to the present inVell-tion;
~Figure 2 is a pl2n view of the machine o Figure 1 in an operatins condition;
Figure 3 sho~s a detail of the machine illustrated in Figure 2 on an enlarged scale;
Figure 4 shows a detail of the machine illustratecl in Figure 2 on an enlarged scale;
Figure 5 shows a detail of the machine illustrated in Figure 1 on ~n enlarged scale.
With reference to the drawings, the body of a suppcrt casing of an icecream-making machine according to the invention is generally indicated 1. A portion 2 of this casing body 1 is intended to receive, for example,a conventional cooling system, not shown, and possibly drive members for rotating an icecream-making blade, these also being conventional and therefore not shown~ Laterally of the portion 2 the casing body 1 forms a plinth 3, also in the form of a casin~, which house~ and supports the working parts of the machine under conside~ation.
A support structure, generally indicated 4r is mounted on the plinth 3. According to a preferred but non-limiting embodiment, the support structure 4 includes a parallelepiped-shaped base 5 fi~ed to the plinth 3 and having a housing structure, The base housing 5 is upwardl}t open and contains a block 6 of yieldinc~ elastomeric material, preerably and for example rubber; to ad~antac3e,.
a plu.rality of su~stantially clome-shaped ca~ities 8 are formed in the lo-~er Lace 7 o tlle block 6.
:
~"7(~4B
'rhe ~op of ~hc base ho~lsing 5 i.!. narti~nlly ClOSe(~ a flan~e 9 which has a substanti~ quadral-gulal out:er edge and a circular inner edge.
The structure 4 includes a subs~antially cylin~rical chamber 10 The side wall of the chamber 10 has a circular cross-section which is not completely closed or~ itself due to the presence of a slot 11 e~tending along a gener2~rix and located concentrically above ~he f]an~e 9 with its axis vertical~ The chamber lO inciudes an ou~er layer 12 which is resiliently deformable and is preferably l~ade of spring steel.
In correspondence with a generatrix diametrally opposite the slot 11, a support 13 is fixed to the layer 12 by conventional means, such as screws, rivets or the like, not shown; the support 13 includes two circular holes 14 and lS aligned on a vertical axis.
A vertical pin 16 is inserted in the holes 1~, lS and its lower end is engaged in a seat 17 formed in a pro-jection 18 of the flange 9.
The chan~er 10 is thus fixed to tne flange 9 by the pin 15.
Thb chamber 10 also includes a ~tratu~ 19 of elastically-yielding material, preferaDly and for example rubber~
This stratum 19 has a predetermined 'hickness and is fixed to the inside of the layer 12 wi-th the aid or edges 20 and 21 of the layer 12 located in correspondence with the slot 11 and bent inwardly~ l'he lower edc3e of the stratum 1~ is in co~tact with the flange 9 by means o~
a no~ched zone 22 ~hich may .move on t:he flange 9 ~ithout excessive friction.
7~ 3 ~ain in correspondence ~ith the sLot ll, thc ~.ayer 1 includes edg~s 23 and 24 ~ent radially outwarclly arld constituting bearing members in a tanc3ential sellse. Th~.
edqes 23 and 24 are urged resiliently towards each other S by resilient means constituted by the layer 12, which tends to close, and possibly by an auxiliary spring 25 stretching across the slot 11 between the edges 23 and
Tlle present in~ention relates to a machine for ~nakLrlcJ
icecream and similar cold products, of the type havillc3 a removable icecream-making vessel and including a suppor~
structure with a base housi.ng surmounted by a substantiAlly cylindrical cooling chamber for receiving the removable icecream makin~ vessel.
In the follo~ing description and in the subsequent clainls, the expression icecream-making vessel is used to identify a container, generally of stainless steel, in which the chosen ingredients of the icecream to be made are mi~ed by a special rotary tool with a scraping blade, the contairler being cooled externally by means of a suitable cooling circuit. Naturally, such a container, and also the cooling chamber i.n which it is.adjustably locatable, may he lS cylindrical, conical or in the form of any other body o~ revolution, but just for the purpose of non-limiting .. example the following description and subsequent claims will refer only to a cylindrical container and respective cyl.i~drical chamber.
In an icecream-making machine, the removability of the icecream-making vessel allows:
- easy and rapid removal of the icecrea~ by simple overturning of the vessel;
- easy, quick andlthorough washing of the vessel , whi~h, to advantage , may be carried out away from the electrical parts and~or other working parts of th~
icecreant-making machine;
- very short down-times betweell two s~ccessive operatillg cycles, even when the icecream-making machine has only 3~ .one icecrectm-making vessel.
'' Machines proposed and made up to now are o~ t~o basic types and, specifically, are machines in ~/hich the d~ct:s for the coolant liquid constitute an up~ardly-flared conical chamber into which and from which an icecrearn-making vessel with the same conical taper can he insertedand removed. ~i-th regard to the taper, this is designed accurately to ensurean effective and essential contact between the duct portions and the outer wall of the ice-cream-makins vessel,but in practice the con~act hardly occurs at all for a large number of these portions ~or a cornbination of technical and technological reasons such as: small manufacturing erxors in the ducts~ deformability of the material (generally copper) from ~hich the ducts are formed and hence the presence of deforma~ions due to bumps or bashes, accidential pressure durinq assembl~
oruse of the machine, slight yielding of the supports for the ducts, ~tc. It is known that, wherever good contact does not occur between the cooling ducts and the ~all of the icecream-making vessel, frost or ice forms and results in a considerable loss Qf frigories (a clear dèterioration in performance).
In another type of icecream-ma~ing machine, the cooling ducts surround an auxiliary receptacle containing brine in which the icecream-making vessel is inmersed. The disadvantayes of this type of machine are linked part-icularly to the considerable constructional complexities, to sealins problems, to the requirements of careful main--tenance and monitoring of the auxiliary receptacle to prevent even the slightest loss of brine ~hich could 3~ irreparably damage the ~orking parts of the machine an~l, not least, the laborious handling required fol operating it. The combination of all th2se disadvantages is s~ch that maci-ines of the type considered have foun~ even mo~e limited use in the industrial field.
t~( b~.r~
The problem thus exists of overcon~ g the a~oresaid clis--advantage o~ the prior art by rna~ing available an ice-cream-making machine with structural and functional characteristics such that, besides ~emovability of the icecream-making vessel, effective contact between all the portions of the cooling duct and the outer wall of tile vessel is al~Jays ensured without in any way hindering the removability.
As a solution to this problem, the Applicant has proposed a machine in which the icecream-making vessel can be inser-ted into or removed from a cooling basket constitu~ed by two halves which can be opened to receive the vessel and can be clamped around it. The coolin~ coil which constitutes the basket can yield resiliently in a direc-tion radially of the basket itself.
The object of the present invention is to provide a machinewhich solves the aforesaid problem while ensuring a better thermal efficiency with a more compact structure than that already proposed.
This object is achievedr according to the present invention, by a machine of the said type, which is characterised - in that at least the side wall of the chamber has a circular cross-section ~hich is not completely closed on itself due to the presence of a slot extending along a generatrix, and includes an outer substantially cylindrical layer, a stratum of elastically-yielding material fi~:ed inside the layer, ducts for circulatin~
the refrigerant fluid fixed within th~ stratum, and m~ans from for enlarging the chamber by widening the slot against resilient means.
To advantage, th~ chclmher is mou!.ted on the bac;e ho;l!,ing by means ~f a first vertical pin located in corre~,orlcl-ence with the slot and a secon' ~ertical pin located i a diametrall~ opposite position.
S An icecream-~aking machine accor~in~ to the inventioll is further characterised in that the resilient rneans al-e constituted by the said layer, whicil is made of spring steel.
The more considerable advantages achieved by the m~chine of the invention are:
- the ease and rapidity with which the icecream-ma~ing vessel can he inserted into ar.d removed from the respective chamber, the cooling cha.~rber being kept cnlarged.
Consequently, it is possible to achieve a combination of all the advantages relating to the removability of the icecream-makiny vessel.
- the eIfective contact which is always en~urec~ between each cooling duct and the outer wall o-f tie icecream-making vessel~ In fact, such a contact is ensured by the resilient reaction o~ the layeL on each duct pas~ing through the stratum of yielding material.
Further characteristics and advantages will hecome clearer from the description of one embodiment of an icecreclm-making machine according to the invention, which follows with reference to the appended dra-~ings g~ven purely by way of non-limiting example.
In the drawlngs:
~ ~7(~4~
Figure 1 is a scherncltic vertical sectiorlal view of an icecream-~a~iny machine accorcling to the present inVell-tion;
~Figure 2 is a pl2n view of the machine o Figure 1 in an operatins condition;
Figure 3 sho~s a detail of the machine illustrated in Figure 2 on an enlarged scale;
Figure 4 shows a detail of the machine illustratecl in Figure 2 on an enlarged scale;
Figure 5 shows a detail of the machine illustrated in Figure 1 on ~n enlarged scale.
With reference to the drawings, the body of a suppcrt casing of an icecream-making machine according to the invention is generally indicated 1. A portion 2 of this casing body 1 is intended to receive, for example,a conventional cooling system, not shown, and possibly drive members for rotating an icecream-making blade, these also being conventional and therefore not shown~ Laterally of the portion 2 the casing body 1 forms a plinth 3, also in the form of a casin~, which house~ and supports the working parts of the machine under conside~ation.
A support structure, generally indicated 4r is mounted on the plinth 3. According to a preferred but non-limiting embodiment, the support structure 4 includes a parallelepiped-shaped base 5 fi~ed to the plinth 3 and having a housing structure, The base housing 5 is upwardl}t open and contains a block 6 of yieldinc~ elastomeric material, preerably and for example rubber; to ad~antac3e,.
a plu.rality of su~stantially clome-shaped ca~ities 8 are formed in the lo-~er Lace 7 o tlle block 6.
:
~"7(~4B
'rhe ~op of ~hc base ho~lsing 5 i.!. narti~nlly ClOSe(~ a flan~e 9 which has a substanti~ quadral-gulal out:er edge and a circular inner edge.
The structure 4 includes a subs~antially cylin~rical chamber 10 The side wall of the chamber 10 has a circular cross-section which is not completely closed or~ itself due to the presence of a slot 11 e~tending along a gener2~rix and located concentrically above ~he f]an~e 9 with its axis vertical~ The chamber lO inciudes an ou~er layer 12 which is resiliently deformable and is preferably l~ade of spring steel.
In correspondence with a generatrix diametrally opposite the slot 11, a support 13 is fixed to the layer 12 by conventional means, such as screws, rivets or the like, not shown; the support 13 includes two circular holes 14 and lS aligned on a vertical axis.
A vertical pin 16 is inserted in the holes 1~, lS and its lower end is engaged in a seat 17 formed in a pro-jection 18 of the flange 9.
The chan~er 10 is thus fixed to tne flange 9 by the pin 15.
Thb chamber 10 also includes a ~tratu~ 19 of elastically-yielding material, preferaDly and for example rubber~
This stratum 19 has a predetermined 'hickness and is fixed to the inside of the layer 12 wi-th the aid or edges 20 and 21 of the layer 12 located in correspondence with the slot 11 and bent inwardly~ l'he lower edc3e of the stratum 1~ is in co~tact with the flange 9 by means o~
a no~ched zone 22 ~hich may .move on t:he flange 9 ~ithout excessive friction.
7~ 3 ~ain in correspondence ~ith the sLot ll, thc ~.ayer 1 includes edg~s 23 and 24 ~ent radially outwarclly arld constituting bearing members in a tanc3ential sellse. Th~.
edqes 23 and 24 are urged resiliently towards each other S by resilient means constituted by the layer 12, which tends to close, and possibly by an auxiliary spring 25 stretching across the slot 11 between the edges 23 and
2~.
On the opposite side of the flange 9 from the projection 18~ there is rigidl~ mounted a frame 26 which is thus inserted bet~een the edges 23 and 29 of the layer 12 in correspondence with the slot 11.
The frame 26 supports a plurality of small pushers housed in respective seats and guided for movement therein towards and away from the edqes 23 and 24; for example, according to the preferred embodiment illustrated in the drawings~
the frame 26 includes two pushers 27, 2~ housed in respective seats 29, and movable towards and away from the edge 23, and two pushers 31, 32 housecl in res3ec~.ive seats 33, 34 and mo~able towards and away from the ed~e 24. The elerr.ents indicated 26 to 40 constitute means for enlarging the chamber 10 by widening the slot 11 ~ainst the resilîent reaction o~ the layer 12 and/or the spri~g 25~ these thus allow the chamber lQ to be enlarged (opened) or otherwise ~clGsed).
The frame 26 also supports a vertical pin 35 on which respective control cams are keyed in correspondence with each pusher; according to the preferred embodiment illustratea, the pin 35 carries four cams 36, 37 3~, 3 located in correspondence with the p-lshers 27, 2~, 31, 32 respectively :~2~
The pin 35 is angulclrly dispLaceable in the frame 26 under the action of drive rneans, for example a manually-operable lever 40 rigid ~ith the pin 35~
The block 6 and the s-tratum 19 support ducts for the circulation o~ refriqerant fluid; these ducts may be of different types and with different paths: for example, according to one preferred embodiment illustrated in the drawings, the block 6 supports a coil 41 arranged substantially in a spiral while, within the chamber 10, the stratum l9 supports a plate 42 of the type co~nonly known by the name "roll-bond", which, as is known, has a series of duc.s 43 formed directly by moulding. The coil 41 is fixed conventionally to the block 6, for e~ample, by being embedded in the rubber of the block 6. The "roll-bond" 42 is rigid with the chamber 10, being fixed to the edges 20 and 21 by conventional means such as, for e~ample, screws, rivets or the like, not shown. In correspondence with the slot 11, the "roll-bond" 42 ter~inates with two lips 44 and 45 which are supe~imposed 2nd s?parated by a gasXet 46.
TQ advantage, the top of the coil 41 is protected by a plate 47r pre erably of copper and of a very small thickness,.
connected to the flange 9.
The ~op of the structure 4 is closed by two annular flanges: a ~irst flange 48 provided with a projection 49 in which a seat 50 is fonned for receiving the pin 16 and bearing on a notched zone 51 Of the stratum 19, and a second closing flange 52 located c~kove the flc~nge 98.
In the clra~ings, a substantially cylinclrical icecl-earn-making vcssel used in ~he machine accordilly t:o the invention is lndicated 53. This vessel 53 has an outer diameter ~hich is between the inner diameter of the chamber lO ~hen it is closed and the inner diameter of the chamber 10 when it is open. ~lence, when the cham17er 10 i5 closed, the "roll-l~ond" 42 presses on the vessel 53 and clamps it, while there is a substantial c3ap between the "roll-bond" 42 and the vessel S~ when i~ is open, which allows the vessel 53 to be .~ithdrawn (or inserted).
The operation of the machine of the invention described above is as lollows.
In an initial condition, ~he cooling chamber 10 is in an open condition, a condition ~chieved by movillg the le~er 40 angularly about the vertical pin 3$; so that the cams 36, 37, 38, 39 thrust the respective pushers 27, 28, 31, 32 to open the slo~ 11 and thus enlarge the chamber 10.
The icecream-ma~ir.g vessel 53 can noi- b~ ~nserted easilv in the coolinq chamber 10 and,~hen it is co~pletely inserted, it rests on the plate 47 while its la~e~l surface is essentially not in contact with the inner ~all of the chamber 10.
Once insertion is co~plete, the lever lO is ~q~in oper~tecl, allot~lng the slot 11 to Glose so that the chamber 10 is in its clos~d condition. Since, in the closed condition, the inner ~all of the cooling chamber 10 has a smaller diameter -than the outer diameter of the icecream~makirlg vessel 53, the "roll-bond" 42 achleves true and proper encirclin~ of the icecream-making ves~.el itself.
Furtllermore, if account is ta~en o~ the presence o~ the stratum 19 o: elastically-~rielditlq material on t~hicl the '`roll-hond ~2" is rnounted, th~ resilient ~e~cti.oll due to the layer 12 and/or the sprillg 25 ls di.stributccl uniformly over the various ducts 43 constituting the "roll-bond",thus ensuring efrective contact between each duct 43 and the outer wall of the icec-ream-making vessel 53.
It should be noted that, for better cooling of the base of the vessel 53, the coolinq f].uid is passed through a coil which is costlier but more effective than the "roll-bond". In order to improve the heat exchallge between the vessel 53 and the coil 41, the copper plate 48 is interposed therebetween and, given its small thickness, is plastically deformable so that it easily adapts to the surfaces in contact; this contact is further improved by the cavities 8 in the rubber block 6, ~hich make it softer.
It should also be noted that the interposition of the pushers 27 , 28, 31, 32 between the cams 36, 37, 38, 39 and the edges 23, 24 prevents the direct sliding of the cams on tne edges, whi_h could caus~ r~bing of the chamber 10 because of frictional rorces.
On the opposite side of the flange 9 from the projection 18~ there is rigidl~ mounted a frame 26 which is thus inserted bet~een the edges 23 and 29 of the layer 12 in correspondence with the slot 11.
The frame 26 supports a plurality of small pushers housed in respective seats and guided for movement therein towards and away from the edqes 23 and 24; for example, according to the preferred embodiment illustrated in the drawings~
the frame 26 includes two pushers 27, 2~ housed in respective seats 29, and movable towards and away from the edge 23, and two pushers 31, 32 housecl in res3ec~.ive seats 33, 34 and mo~able towards and away from the ed~e 24. The elerr.ents indicated 26 to 40 constitute means for enlarging the chamber 10 by widening the slot 11 ~ainst the resilîent reaction o~ the layer 12 and/or the spri~g 25~ these thus allow the chamber lQ to be enlarged (opened) or otherwise ~clGsed).
The frame 26 also supports a vertical pin 35 on which respective control cams are keyed in correspondence with each pusher; according to the preferred embodiment illustratea, the pin 35 carries four cams 36, 37 3~, 3 located in correspondence with the p-lshers 27, 2~, 31, 32 respectively :~2~
The pin 35 is angulclrly dispLaceable in the frame 26 under the action of drive rneans, for example a manually-operable lever 40 rigid ~ith the pin 35~
The block 6 and the s-tratum 19 support ducts for the circulation o~ refriqerant fluid; these ducts may be of different types and with different paths: for example, according to one preferred embodiment illustrated in the drawings, the block 6 supports a coil 41 arranged substantially in a spiral while, within the chamber 10, the stratum l9 supports a plate 42 of the type co~nonly known by the name "roll-bond", which, as is known, has a series of duc.s 43 formed directly by moulding. The coil 41 is fixed conventionally to the block 6, for e~ample, by being embedded in the rubber of the block 6. The "roll-bond" 42 is rigid with the chamber 10, being fixed to the edges 20 and 21 by conventional means such as, for e~ample, screws, rivets or the like, not shown. In correspondence with the slot 11, the "roll-bond" 42 ter~inates with two lips 44 and 45 which are supe~imposed 2nd s?parated by a gasXet 46.
TQ advantage, the top of the coil 41 is protected by a plate 47r pre erably of copper and of a very small thickness,.
connected to the flange 9.
The ~op of the structure 4 is closed by two annular flanges: a ~irst flange 48 provided with a projection 49 in which a seat 50 is fonned for receiving the pin 16 and bearing on a notched zone 51 Of the stratum 19, and a second closing flange 52 located c~kove the flc~nge 98.
In the clra~ings, a substantially cylinclrical icecl-earn-making vcssel used in ~he machine accordilly t:o the invention is lndicated 53. This vessel 53 has an outer diameter ~hich is between the inner diameter of the chamber lO ~hen it is closed and the inner diameter of the chamber 10 when it is open. ~lence, when the cham17er 10 i5 closed, the "roll-l~ond" 42 presses on the vessel 53 and clamps it, while there is a substantial c3ap between the "roll-bond" 42 and the vessel S~ when i~ is open, which allows the vessel 53 to be .~ithdrawn (or inserted).
The operation of the machine of the invention described above is as lollows.
In an initial condition, ~he cooling chamber 10 is in an open condition, a condition ~chieved by movillg the le~er 40 angularly about the vertical pin 3$; so that the cams 36, 37, 38, 39 thrust the respective pushers 27, 28, 31, 32 to open the slo~ 11 and thus enlarge the chamber 10.
The icecream-ma~ir.g vessel 53 can noi- b~ ~nserted easilv in the coolinq chamber 10 and,~hen it is co~pletely inserted, it rests on the plate 47 while its la~e~l surface is essentially not in contact with the inner ~all of the chamber 10.
Once insertion is co~plete, the lever lO is ~q~in oper~tecl, allot~lng the slot 11 to Glose so that the chamber 10 is in its clos~d condition. Since, in the closed condition, the inner ~all of the cooling chamber 10 has a smaller diameter -than the outer diameter of the icecream~makirlg vessel 53, the "roll-bond" 42 achleves true and proper encirclin~ of the icecream-making ves~.el itself.
Furtllermore, if account is ta~en o~ the presence o~ the stratum 19 o: elastically-~rielditlq material on t~hicl the '`roll-hond ~2" is rnounted, th~ resilient ~e~cti.oll due to the layer 12 and/or the sprillg 25 ls di.stributccl uniformly over the various ducts 43 constituting the "roll-bond",thus ensuring efrective contact between each duct 43 and the outer wall of the icec-ream-making vessel 53.
It should be noted that, for better cooling of the base of the vessel 53, the coolinq f].uid is passed through a coil which is costlier but more effective than the "roll-bond". In order to improve the heat exchallge between the vessel 53 and the coil 41, the copper plate 48 is interposed therebetween and, given its small thickness, is plastically deformable so that it easily adapts to the surfaces in contact; this contact is further improved by the cavities 8 in the rubber block 6, ~hich make it softer.
It should also be noted that the interposition of the pushers 27 , 28, 31, 32 between the cams 36, 37, 38, 39 and the edges 23, 24 prevents the direct sliding of the cams on tne edges, whi_h could caus~ r~bing of the chamber 10 because of frictional rorces.
Claims (6)
- l Machine for making icecream and similar cold products of the type having a removable icecream--making vessel (53) and including a support structure (4) with a base housing (5) surmounted by a substantially cylindrical cooling chamber (10) for receiving the removable icecream-making vessel (53), characterised in that at least the side wall of the chamber (10) has a circular cross-section which is incompletely closed on itself due to the presence of a slot (11) extending along a generatrix, and includes an outer substantially cylindrical layer (12), a stratum (19) of elastically-yielding material fixed inside the layer (12), ducts (42) for circulating the refrigerant fluid fixed within the stratum (19), and means (26-40) for enlarging the chamber (10) by widening the slot (11) against resilient means (12, 25).
- 2. Machine according to Claim 1, characterised in that the chamber (10) is mounted on the base housing (5) by means of a first vertical pin (35) located in correspon-dence with the slot (11) and a second vertical pin (16) in a diametrally opposite position.
- 3. Machine according to Claim 1, characterised in that the resilient means are constituted by the layer (12), which is formed of spring steel.
- 4. Machine according to Claim l, characterised in that the resilient means include a spring (25) stretching across the slot (11).
- 5. Machine according to any one of Claims 2, 3, 4, characterised in that the means for enlarging the chamber include a plurality of cams (36, 37, 38, 39) keyed onto the first pin (35) and acting, within the slot (11), on the layer (12), the first pin (35) being rotatably mounted on the base housing (5).
- 6. Machine according to any one of claims 2, 3 or 4, characterized in that the means for enlarging the chamber includes a plurality of cams (36, 37, 38, 39) keyed onto the first pin (35) and acting on respective pushers (27, 28, 31, 32) interposed in the slot (11) between each of the cams (36, 37, 38, 39) and the layer (12), the pushers being guided for movement in a framework (26) fixed to the base housing (5) and the first pin (35) being rotatably mounted on the base housing (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21185/83A IT1169524B (en) | 1983-05-19 | 1983-05-19 | EQUIPMENT FOR THE PRODUCTION OF ICE CREAM AND SIMILAR COLD PRODUCTS, WITH REMOVABLE ICE CREAM CONTAINER |
| IT21185A/83 | 1983-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1227048A true CA1227048A (en) | 1987-09-22 |
Family
ID=11178058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000454363A Expired CA1227048A (en) | 1983-05-19 | 1984-05-15 | Machine for making icecream and similar cold products, having a removable icecream-making vessel |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4535604A (en) |
| JP (1) | JPS6075237A (en) |
| AU (1) | AU2836384A (en) |
| BE (1) | BE899701A (en) |
| BR (1) | BR8402399A (en) |
| CA (1) | CA1227048A (en) |
| CH (1) | CH657754A5 (en) |
| DE (1) | DE3417911A1 (en) |
| ES (1) | ES532598A0 (en) |
| FR (1) | FR2546038A1 (en) |
| GB (1) | GB2143016B (en) |
| GR (1) | GR79974B (en) |
| IL (1) | IL71834A0 (en) |
| IT (1) | IT1169524B (en) |
| NL (1) | NL8401603A (en) |
| PT (1) | PT78583B (en) |
| ZA (1) | ZA843649B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1167037B (en) * | 1983-11-30 | 1987-05-06 | Alfredo Cavalli | EQUIPMENT FOR THE PRODUCTION OF ICE CREAM AND SIMILAR COLD PRODUCTS WITH REMOVABLE ICE CREAM CONTAINER |
| IT8553434V0 (en) * | 1985-05-28 | 1985-05-28 | Gaggia Brevetti | IMPROVEMENTS ON ICE CREAM MAKERS PARTICULARLY FOR DOMESTIC USE |
| US4790141A (en) * | 1987-12-14 | 1988-12-13 | Industrial Gas And Supply Company | Apparatus and process for quick freezing of blood plasma |
| US5363746A (en) * | 1990-10-29 | 1994-11-15 | Gordon Ellis D | Automatic food preparation device |
| IT228579Y1 (en) * | 1992-09-16 | 1998-04-27 | Minerva Di Chiodini Mario S R | HAMBURGER MACHINE, WITH REFRIGERATED LOAD HOPPER. |
| US5493873A (en) * | 1993-10-20 | 1996-02-27 | Elkay Manufacturing Company | Liquid dispensing device |
| DE69917260T2 (en) * | 1998-06-12 | 2005-05-19 | De'longhi S.P.A. | DEVICE FOR PRODUCING ICE CREAM |
| US6571564B2 (en) | 2001-10-23 | 2003-06-03 | Shashank Upadhye | Timed container warmer and cooler |
| ITUD20020190A1 (en) * | 2002-09-09 | 2004-03-10 | De Longhi Spa | DEVICE FOR THE PRODUCTION OF ICE CREAM |
| CA2925206A1 (en) * | 2013-10-30 | 2015-05-07 | Nestec S.A. | Machine and system for preparing a cooled food product with aerated or whipped texture in controlled manner |
| CN105682470A (en) * | 2013-10-30 | 2016-06-15 | 雀巢产品技术援助有限公司 | Machine for preparing cooled aerated confectionary with accurate temperature control |
| CA3028121A1 (en) | 2016-06-16 | 2017-12-21 | Sigma Phase, Corp. | System for providing a single serving of a frozen confection |
| IT201700003438A1 (en) * | 2017-01-13 | 2018-07-13 | Tommaso Pernici | GELATO INSTRUMENT |
| AU2019238292A1 (en) | 2018-03-22 | 2020-11-19 | Bedford Systems Llc | Carbonation system for beverage machine |
| US10612835B2 (en) | 2018-08-17 | 2020-04-07 | Sigma Phase, Corp. | Rapidly cooling food and drinks |
| US11470855B2 (en) | 2018-08-17 | 2022-10-18 | Coldsnap, Corp. | Providing single servings of cooled foods and drinks |
| US10543978B1 (en) | 2018-08-17 | 2020-01-28 | Sigma Phase, Corp. | Rapidly cooling food and drinks |
| IT201800009409A1 (en) * | 2018-10-12 | 2020-04-12 | Motor Power Company Srl | MACHINE FOR THE PRODUCTION OF LIQUID OR SEMI-LIQUID FOOD PRODUCTS AND RELATIVE METHOD OF REALIZATION |
| DE102019202253A1 (en) * | 2019-02-19 | 2020-08-20 | Volkswagen Aktiengesellschaft | Coolant guide element, cooling system and electrical machine |
| US11337438B2 (en) | 2020-01-15 | 2022-05-24 | Coldsnap, Corp. | Rapidly cooling food and drinks |
| TW202202790A (en) | 2020-06-01 | 2022-01-16 | 美商寇德斯納普公司 | Refrigeration systems for rapidly cooling food and drinks |
| WO2022017631A1 (en) * | 2020-07-23 | 2022-01-27 | Kempische Brik Centrale | A device for preparing a frozen food product from a liquid mixture |
| CA3186658A1 (en) | 2020-07-23 | 2022-01-27 | Frederik VAN ISACKER | A device for preparing a frozen food product from a liquid mixture |
| US11827402B2 (en) | 2021-02-02 | 2023-11-28 | Coldsnap, Corp. | Filling aluminum cans aseptically |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3358118A (en) * | 1967-12-12 | Electric water heater | ||
| US2367368A (en) * | 1942-12-21 | 1945-01-16 | Mcgraw Electric Co | Electric tank heater |
| US2637530A (en) * | 1950-04-04 | 1953-05-05 | Gen Electric | Heat exchange structure |
| US2801321A (en) * | 1956-06-11 | 1957-07-30 | Smith Corp A O | Electric water heater having a wraparound heating element and a glasscoated exterior surface |
| US3335789A (en) * | 1965-10-21 | 1967-08-15 | Raskin Walter | Resilient heat exchange device |
| US3452555A (en) * | 1967-07-18 | 1969-07-01 | Merrell E Thurman | Ice cream freezer |
| US3553976A (en) * | 1968-07-29 | 1971-01-12 | Eric Cumine | Container refrigerator |
| US3912907A (en) * | 1974-07-19 | 1975-10-14 | Fast Heat Element Mfg Co | Clamp and mounting electric heater with a cable |
| US4206805A (en) * | 1978-03-30 | 1980-06-10 | Beckett Ralph R | Heat recovery unit |
| US4213498A (en) * | 1978-11-15 | 1980-07-22 | American Hcp | Low-cost flexible plastic heat exchanger |
| US4429549A (en) * | 1980-02-20 | 1984-02-07 | Randolphi Peter P M | Ice-cream freezer |
-
1983
- 1983-05-19 IT IT21185/83A patent/IT1169524B/en active
-
1984
- 1984-05-07 CH CH2220/84A patent/CH657754A5/en not_active IP Right Cessation
- 1984-05-14 FR FR8407434A patent/FR2546038A1/en active Pending
- 1984-05-15 CA CA000454363A patent/CA1227048A/en not_active Expired
- 1984-05-15 ZA ZA843649A patent/ZA843649B/en unknown
- 1984-05-15 IL IL71834A patent/IL71834A0/en unknown
- 1984-05-15 DE DE19843417911 patent/DE3417911A1/en not_active Withdrawn
- 1984-05-15 PT PT78583A patent/PT78583B/en unknown
- 1984-05-16 US US06/610,766 patent/US4535604A/en not_active Expired - Lifetime
- 1984-05-16 GB GB08412479A patent/GB2143016B/en not_active Expired
- 1984-05-17 JP JP59097687A patent/JPS6075237A/en active Granted
- 1984-05-17 GR GR74753A patent/GR79974B/el unknown
- 1984-05-18 BR BR8402399A patent/BR8402399A/en unknown
- 1984-05-18 BE BE0/212964A patent/BE899701A/en not_active IP Right Cessation
- 1984-05-18 ES ES532598A patent/ES532598A0/en active Granted
- 1984-05-18 AU AU28363/84A patent/AU2836384A/en not_active Abandoned
- 1984-05-18 NL NL8401603A patent/NL8401603A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CH657754A5 (en) | 1986-09-30 |
| ZA843649B (en) | 1984-12-24 |
| AU2836384A (en) | 1984-11-22 |
| JPS6075237A (en) | 1985-04-27 |
| JPH0515417B2 (en) | 1993-03-01 |
| US4535604A (en) | 1985-08-20 |
| NL8401603A (en) | 1984-12-17 |
| GB2143016A (en) | 1985-01-30 |
| BR8402399A (en) | 1985-04-02 |
| IT1169524B (en) | 1987-06-03 |
| ES8503933A1 (en) | 1985-04-16 |
| PT78583A (en) | 1984-06-01 |
| BE899701A (en) | 1984-09-17 |
| GB2143016B (en) | 1986-08-28 |
| GB8412479D0 (en) | 1984-06-20 |
| GR79974B (en) | 1984-10-31 |
| ES532598A0 (en) | 1985-04-16 |
| DE3417911A1 (en) | 1984-11-22 |
| FR2546038A1 (en) | 1984-11-23 |
| IT8321185A0 (en) | 1983-05-19 |
| PT78583B (en) | 1986-05-08 |
| IL71834A0 (en) | 1984-09-30 |
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| Date | Code | Title | Description |
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| MKEX | Expiry |