WO2015044147A1 - Beverages dispenser using mixing chambers - Google Patents

Beverages dispenser using mixing chambers Download PDF

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Publication number
WO2015044147A1
WO2015044147A1 PCT/EP2014/070269 EP2014070269W WO2015044147A1 WO 2015044147 A1 WO2015044147 A1 WO 2015044147A1 EP 2014070269 W EP2014070269 W EP 2014070269W WO 2015044147 A1 WO2015044147 A1 WO 2015044147A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
mixing
housing
water supply
supply pipe
Prior art date
Application number
PCT/EP2014/070269
Other languages
French (fr)
Inventor
Roberto Angelo Calderone
Fabien RAWYLER
Cédric Rey
Olivier GIRAULT
Original Assignee
Nestec S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nestec S.A. filed Critical Nestec S.A.
Publication of WO2015044147A1 publication Critical patent/WO2015044147A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00Apparatus for making beverages
    • A47J31/40Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea
    • A47J31/401Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea whereby the powder ingredients and the water are delivered to a mixing bowl

Definitions

  • the present invention relates to beverage dispensers preparing beverages from a soluble ingredient stored in a container and in which a dose of ingredient is dispensed from the container into a dissolution chamber to be mixed with a diluent.
  • Many beverages like espresso and other coffee beverages, milk beverages, chocolate beverages, ... are often prepared by mixing a beverage soluble powder with a diluent.
  • Mixing devices are known for speedier preparation of such beverages by mixing the soluble food powder with the diluent, such as water. These devices typically comprise a dissolution chamber in which the soluble powder and the diluent are fed.
  • the diluent can be introduced into the dissolution chamber in order to create a whirlpool to efficiently dissolve the soluble powder in the hot water or the hot water can be introduced under the form of jets that provides mixing, dissolving and frothing.
  • the mixture is often frothed by a whipper at the bottom of the dissolution chamber to reconstitute the beverage and produce foam.
  • the beverage is then usually evacuated into a receptacle for drinking.
  • the food soluble powder is usually stored in a container placed above the dissolution chamber opened mouth and a dosing device like a screw or an auger or a pump doses and delivers the food soluble component which falls in the dissolution chamber.
  • a dosing device like a screw or an auger or a pump doses and delivers the food soluble component which falls in the dissolution chamber.
  • each beverage preparation shall retain as less as possible of beverage residues. Firstly these residues may create hygienic issue if no other beverage is rapidly prepared again to rinse them. Secondly these residues may affect the taste of the next prepared beverage. Generally at the end of each beverage preparation water is introduced in the dissolution chamber to rinse it. Yet it has been observed that it is not possible to rinse the whole internal surface of the dissolution chamber from its top to its bottom usually. In particular the top of the dissolution chamber is generally never rinsed.
  • the beverage dispensers such as described hereabove comprise a steam and fines suction ring at the top of the dissolution chamber.
  • This ring is connected to a steam evacuation pipe which often comprises a fan for sucking fines and steam from the dissolution chamber. Due to the evacuation of steam and fines through the top of the dissolution chamber said products may deposit on the top of the internal wall of the dissolution chamber.
  • this part of the dissolution chamber wall is not rinsed after each beverage preparation systematically. This part is cleaned when the operator in charge of the maintenance of the dispenser dismounts the dissolution chamber for the daily cleaning. Then the cleaning of this part of the chamber is manual and relies on the operator only. Due to the fact that this cleaning is made once a day it becomes more difficult due to the drying of residues during the day. Besides since this cleaning operation is made manually the operator may forget to clean this part of the chamber.
  • the invention concerns a beverage dispenser for mixing a soluble product and water comprising :
  • a mixing chamber comprising a mixing housing and a whipper device lodged in the mixing housing, wherein the top of the mixing housing is opened,
  • a water supply pipe for introducing water in the mixing chamber through the opened top of the mixing housing, wherein the water supply pipe is part of the dispenser frame only.
  • the mixing chamber housing is deprived of any water supply tube.
  • the internal wall of the mixing housing is devoid of any hole corresponding to a water inlet and is fully flat. Consequently an improved distribution of water on this internal surface can be reached, in particular for mixing and rinsing steps during a beverage preparation.
  • the water supply pipe is designed so that a jet of water dispensed by said water supply pipe hits the internal face of the mixing housing wall next to the mixing housing top.
  • the pipe does not have to be designed so that the jet hits the top of the internal wall because the properties of the design of the internal wall of the mixing housing and the velocity of the water jet supplied by the pipe can be adjusted to get a raising swirl of water inside the internal wall up to or near to the top if the mixing housing.
  • the water supply pipe is designed so that its outlet emerges above the opened top of the mixing housing and so that a jet of water dispensed by the water supply tube is oriented downwardly obliquely.
  • the upper part of the mixing housing internal face is essentially vertically oriented and the supply tube is oriented so that a jet of water delivered by said tube hits said vertically oriented internal face.
  • the supply tube presents at its outlet a section having a surface equivalent to the surface of a circular area of a diameter comprised between 2 and 3 mm, and
  • the supply tube is oriented according to an angle comprised between 20 and 30° with the horizontal.
  • the water supply pipe is made of a flexible material.
  • flexible it is meant a material that is resilient and elastic ; it can be deformed but recover its original shape when no force is exerted on it.
  • This material can be elastomeric or silicone material. This property enables an easy dismantling of the mixing chamber from the dispenser frame : during dismantling the mixing housing can hurt the water pipe fixed to the frame without damaging neither the housing nor the pipe. This material also reduces the risk of scale deposit inside the water supply pipe.
  • the mixing chamber usually comprises a steam evacuation ring at the top of the mixing housing.
  • the invention concerns a process for preparing a beverage with a dispenser such as described here above wherein the process comprises the steps of :
  • water can be introduced so that water forms a vortex, said vortex raising up along the internal wall of the housing.
  • water can be introduced so that water forms a vortex, said vortex starting at the upper possible height in the internal wall of the housing and slides down from this height.
  • the vortex creates a swirling curtain that improves the preparation of the beverage because it guarantees that all the dose of soluble product introduced in the chamber is carried towards the whipper device at the bottom of the mixing chamber.
  • FIG. 1 depicts a dispenser according to the present invention with the front door removed
  • FIG. 2a and 2b illustrate a mixing chamber configured according to the prior art
  • Figure 3 is a vertical section of the mixing chambers of the dispenser of Figure 1 ,
  • FIG. 4 is a top view of the mixing chambers of the dispenser of Figure 1 ,
  • FIG. 5 is a front view of the dispenser of Figure 1 in which one of the mixing chambers was removed
  • FIG. 6 is a side section view of the dispenser of Figure 1 in the area of the mixing chambers.
  • FIG. 7 is a top view of one mixing chamber and its corresponding water supply tube of Figure 4 illustrating the piercing inside the diluent inlet.
  • FIG. 1 illustrates a dispenser according to the present invention.
  • the dispenser comprises a housing 4. Inside the housing 4 three refillable containers 5 for storing beverage powders are positioned.
  • each container stores a different soluble powder, for example instant coffee, instant decaffeinated coffee and milk powder.
  • Each container presents an outlet 51 at its bottom from which a dose of powder can be delivered for preparing a beverage.
  • Each of the outlets 51 is oriented so as to deliver the beverage powder to a chute 6 associated to one of the two mixing chamber 3.
  • chambers 3 are supplied with powders of the same nature.
  • the chamber on the right can be dedicated to coffee powders and then the two right containers delivering powder to this chamber can store a coffee powder and a decaffeinated powder.
  • the left chamber can be dedicated to a milk powder and then the container on the left delivering powder to this chamber can store a milk powder.
  • Each chamber comprises a water inlet for introducing water in the chamber ; these inlets are not apparent on Figure 1.
  • the dispenser comprises also outlets downstream to the mixing chambers 3 for delivering the prepared beverages in a dispensing area 8 where a drinking cup can be placed.
  • FIGs 2a and 2b are two views a mixing chamber 3 configured according to the prior art illustrating how the mixing chamber is fixed inside the dispenser.
  • the mixing chamber 3 comprises a mixing housing 31 opened at its top 33 for receiving a dose of powder from a powder canister.
  • the mixing chamber 3 comprises a diluent supply for introducing water inside the mixing chamber to mix with beverage powder and dissolve powder.
  • the diluent is supplied through a pipe 38 that is part of the mixing housing 31 and that emerges near from the top 33 of the housing.
  • the external extremity of the pipe 38 communicates with a diluent supply tube 39 in the dispenser.
  • the mixing chamber comprises a whipper device 37 at the bottom of the chamber housing for whipping the mixture of water and beverage powder to improve dissolution and in general to froth the beverage.
  • the whipper device 37 is activated by a motor 36.
  • the mixing chamber 3 is attached to the frame 2 of the dispenser that supports the different components of the dispenser.
  • the frame 2 supports the motor and the diluent supply 39 too.
  • the mixing chamber comprises a steam evacuation cap 7 at the top of the mixing chamber 3.
  • the steam cap 7 comprises a steam outlet 71 which is usually connected to a sucking fan inside the dispenser to evacuate humidity from the mixing chamber.
  • FIG. 3 is a vertical section view of the dispenser of Figure 1 according to the present invention in the area of the mixing chambers 3. In this figure the chutes 6 have been withdrawn to make the water supply more clearly apparent.
  • the water supply tube 34 of each of the mixing chamber is part of the frame 2 of the dispenser only.
  • the outlet 341 of the water supply tube is not part of the mixing chamber. The outlet 341 does not emerge in the wall of the mixing housing 33.
  • the water supply pipe 34 is designed so that a jet of water dispensed by the water supply pipe hits the internal face of the mixing housing wall next to the mixing housing top 33.
  • the jet of water hits the housing a little bit under the top 33 so that a swirling curtain of water can rise above the hitting point without overflowing the top.
  • the water supply pipe 34 is oriented downwardly obliquely so as to direct water to the internal face of the mixing housing wall.
  • outlet 341 of the water supply tube is not part of the mixing chamber housing 33, no backflow of beverage in said tube can happen. Moreover all the internal surface of the housing wall can be rinsed by water which optimizes dissolution and final rinsing.
  • the upper part of the mixing housing internal face is essentially vertically oriented and the supply tube 3 is oriented so that a jet of water delivered by said tube hits said vertically oriented internal face.
  • the supply tube 34 is oriented according to an angle a comprised between 20 and 30° with the horizontal.
  • the section of the outlet can be circular and presents a diameter d comprised between 2 and 3 mm preferably.
  • FIG 1 In this figure the chutes 6 have been withdrawn to make the water supply more clearly apparent.
  • FIG 5 is a front view of the dispenser of Figure 1 in which the right mixing chamber was removed. It is made apparent that the water supply tube 34 is only part of the frame 2. Contrary to the mixing chambers of the state of the art it is no more necessary to disconnect or connect the water supply tube of the mixing chamber to the water supply in the frame of the dispenser. The mounting and dismounting of the mixing chamber are simplified for the operator.
  • the water supply pipe 34 can be made of a flexible material so that if the operator hits the water supply tube 34 with the mixing chamber during mounting and dismounting no piece of material is hurt.
  • Figure 6 is a side section view of the dispenser of Figure 1 in the area of the mixing chambers. It provides a section view of the left mixing chamber in Figure 1 . It illustrates how the steam evacuation cap 7 is placed above the mixing chamber 3 by sliding the steam cap side 72 parts around the external wall of the housing of the mixing chamber. In the back side of the steam cap that faces the frame 2 the steam cap 7 presents an opening 71 . This opening 71 enables the water tube 34 attached to the frame 2 to emerge above the mixing chamber 3. The top 71 1 of said opening can be connected to a steam box 9 that is a conduit for evacuating steam.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

The invention concerns a beverage dispenser (1) for mixing a soluble product and water comprising : -a frame (2) for supporting the components of the dispenser, -a mixing chamber (3) comprising a mixing housing (31) and a whipper device (32) lodged in the mixing housing, wherein the top (33) of the mixing housing is opened, -a water supply pipe (34) for introducing water in the mixing chamber, wherein the water supply pipe is part of the frame only.

Description

BEVERAGES DISPENSER USING MIXING CHAMBERS
Field of the invention
The present invention relates to beverage dispensers preparing beverages from a soluble ingredient stored in a container and in which a dose of ingredient is dispensed from the container into a dissolution chamber to be mixed with a diluent.
Background of the invention
Many beverages like espresso and other coffee beverages, milk beverages, chocolate beverages, ... are often prepared by mixing a beverage soluble powder with a diluent. Mixing devices are known for speedier preparation of such beverages by mixing the soluble food powder with the diluent, such as water. These devices typically comprise a dissolution chamber in which the soluble powder and the diluent are fed. The diluent can be introduced into the dissolution chamber in order to create a whirlpool to efficiently dissolve the soluble powder in the hot water or the hot water can be introduced under the form of jets that provides mixing, dissolving and frothing. The mixture is often frothed by a whipper at the bottom of the dissolution chamber to reconstitute the beverage and produce foam. The beverage is then usually evacuated into a receptacle for drinking.
The food soluble powder is usually stored in a container placed above the dissolution chamber opened mouth and a dosing device like a screw or an auger or a pump doses and delivers the food soluble component which falls in the dissolution chamber.
At the end of each beverage preparation the internal parts of the dissolution chamber shall retain as less as possible of beverage residues. Firstly these residues may create hygienic issue if no other beverage is rapidly prepared again to rinse them. Secondly these residues may affect the taste of the next prepared beverage. Generally at the end of each beverage preparation water is introduced in the dissolution chamber to rinse it. Yet it has been observed that it is not possible to rinse the whole internal surface of the dissolution chamber from its top to its bottom usually. In particular the top of the dissolution chamber is generally never rinsed.
In general the beverage dispensers such as described hereabove comprise a steam and fines suction ring at the top of the dissolution chamber. This ring is connected to a steam evacuation pipe which often comprises a fan for sucking fines and steam from the dissolution chamber. Due to the evacuation of steam and fines through the top of the dissolution chamber said products may deposit on the top of the internal wall of the dissolution chamber. Yet as mentioned hereabove this part of the dissolution chamber wall is not rinsed after each beverage preparation systematically. This part is cleaned when the operator in charge of the maintenance of the dispenser dismounts the dissolution chamber for the daily cleaning. Then the cleaning of this part of the chamber is manual and relies on the operator only. Due to the fact that this cleaning is made once a day it becomes more difficult due to the drying of residues during the day. Besides since this cleaning operation is made manually the operator may forget to clean this part of the chamber.
Consequently there is a need for dispensers of which dissolution chamber dirties less and is easier to clean for the operator.
Summary of the invention
According to a first aspect, the invention concerns a beverage dispenser for mixing a soluble product and water comprising :
- a frame for supporting the components of the dispenser,
- a mixing chamber comprising a mixing housing and a whipper device lodged in the mixing housing, wherein the top of the mixing housing is opened,
- a water supply pipe for introducing water in the mixing chamber through the opened top of the mixing housing, wherein the water supply pipe is part of the dispenser frame only.
In the present invention the mixing chamber housing is deprived of any water supply tube. As a consequence the internal wall of the mixing housing is devoid of any hole corresponding to a water inlet and is fully flat. Consequently an improved distribution of water on this internal surface can be reached, in particular for mixing and rinsing steps during a beverage preparation.
Further the risk of a back flow of water or beverage inside the water supply is totally avoided.
Preferably the water supply pipe is designed so that a jet of water dispensed by said water supply pipe hits the internal face of the mixing housing wall next to the mixing housing top.
Generally the pipe does not have to be designed so that the jet hits the top of the internal wall because the properties of the design of the internal wall of the mixing housing and the velocity of the water jet supplied by the pipe can be adjusted to get a raising swirl of water inside the internal wall up to or near to the top if the mixing housing.
In general the water supply pipe is designed so that its outlet emerges above the opened top of the mixing housing and so that a jet of water dispensed by the water supply tube is oriented downwardly obliquely.
Preferably the upper part of the mixing housing internal face is essentially vertically oriented and the supply tube is oriented so that a jet of water delivered by said tube hits said vertically oriented internal face.
According to the preferred embodiment :
- the supply tube presents at its outlet a section having a surface equivalent to the surface of a circular area of a diameter comprised between 2 and 3 mm, and
- at its outlet the supply tube is oriented according to an angle comprised between 20 and 30° with the horizontal. These preferred features can be applied to at last the last millimetres of the supply tube outlet.
According to the preferred embodiment the water supply pipe is made of a flexible material. By flexible it is meant a material that is resilient and elastic ; it can be deformed but recover its original shape when no force is exerted on it. This material can be elastomeric or silicone material. This property enables an easy dismantling of the mixing chamber from the dispenser frame : during dismantling the mixing housing can hurt the water pipe fixed to the frame without damaging neither the housing nor the pipe. This material also reduces the risk of scale deposit inside the water supply pipe.
The mixing chamber usually comprises a steam evacuation ring at the top of the mixing housing.
According to a second aspect, the invention concerns a process for preparing a beverage with a dispenser such as described here above wherein the process comprises the steps of :
- introducing a dose of soluble product in the mixing chamber,
- feeding water through the water supply pipe to create a jet of water, said jet of water hitting the internal face of the mixing housing next to the mixing housing top,
- controlling the water flow dispensed through the water supply pipe in such a manner that the water forms a swirling curtain down the internal face of the mixing housing.
According to one mode water can be introduced so that water forms a vortex, said vortex raising up along the internal wall of the housing.
According to another mode water can be introduced so that water forms a vortex, said vortex starting at the upper possible height in the internal wall of the housing and slides down from this height.
The vortex creates a swirling curtain that improves the preparation of the beverage because it guarantees that all the dose of soluble product introduced in the chamber is carried towards the whipper device at the bottom of the mixing chamber.
Additionally while the swirling curtain of water flows around and down the interior of the mixing chamber, it cleanses the surfaces and prevents build-up or retention thereon of caked deposits or accumulations of soluble product.
Brief description of the drawings
The characteristics and advantages of the invention will be better understood in relation to the following figures :
- Figure 1 depicts a dispenser according to the present invention with the front door removed,
- Figures 2a and 2b illustrate a mixing chamber configured according to the prior art,
- Figure 3 is a vertical section of the mixing chambers of the dispenser of Figure 1 ,
- Figure 4 is a top view of the mixing chambers of the dispenser of Figure 1 ,
- Figure 5 is a front view of the dispenser of Figure 1 in which one of the mixing chambers was removed,
- Figure 6 is a side section view of the dispenser of Figure 1 in the area of the mixing chambers.
- Figure 7 is a top view of one mixing chamber and its corresponding water supply tube of Figure 4 illustrating the piercing inside the diluent inlet.
Detailed description of the drawings
Figure 1 illustrates a dispenser according to the present invention. In the illustrated vie the front door of the dispenser was removed. The dispenser comprises a housing 4. Inside the housing 4 three refillable containers 5 for storing beverage powders are positioned. In general each container stores a different soluble powder, for example instant coffee, instant decaffeinated coffee and milk powder. Each container presents an outlet 51 at its bottom from which a dose of powder can be delivered for preparing a beverage. Each of the outlets 51 is oriented so as to deliver the beverage powder to a chute 6 associated to one of the two mixing chamber 3. Usually chambers 3 are supplied with powders of the same nature. For example the chamber on the right can be dedicated to coffee powders and then the two right containers delivering powder to this chamber can store a coffee powder and a decaffeinated powder. The left chamber can be dedicated to a milk powder and then the container on the left delivering powder to this chamber can store a milk powder. Each chamber comprises a water inlet for introducing water in the chamber ; these inlets are not apparent on Figure 1. The dispenser comprises also outlets downstream to the mixing chambers 3 for delivering the prepared beverages in a dispensing area 8 where a drinking cup can be placed.
Figures 2a and 2b are two views a mixing chamber 3 configured according to the prior art illustrating how the mixing chamber is fixed inside the dispenser. The mixing chamber 3 comprises a mixing housing 31 opened at its top 33 for receiving a dose of powder from a powder canister. The mixing chamber 3 comprises a diluent supply for introducing water inside the mixing chamber to mix with beverage powder and dissolve powder. In the state of the art the diluent is supplied through a pipe 38 that is part of the mixing housing 31 and that emerges near from the top 33 of the housing. The external extremity of the pipe 38 communicates with a diluent supply tube 39 in the dispenser. The mixing chamber comprises a whipper device 37 at the bottom of the chamber housing for whipping the mixture of water and beverage powder to improve dissolution and in general to froth the beverage. The whipper device 37 is activated by a motor 36. The mixing chamber 3 is attached to the frame 2 of the dispenser that supports the different components of the dispenser. The frame 2 supports the motor and the diluent supply 39 too.
The mixing chamber comprises a steam evacuation cap 7 at the top of the mixing chamber 3. The steam cap 7 comprises a steam outlet 71 which is usually connected to a sucking fan inside the dispenser to evacuate humidity from the mixing chamber.
When water is introduced through the pipe 38 a swirling curtain of water is usually created in the chamber housing internal wall. Yet in view of Figure 2a it is clear that said swirling curtain of water cannot rise above the point where the pipe emerges in the mixing chamber housing. Then the internal wall of the chamber housing 33 above the outlet of the pipe 38 is never rinsed.
Apart from the lack of rinsing of the upper part of the mixing housing, the mixing chamber of the state of the art presents the drawback that the beverage under preparation in the mixing chamber may reach the pipe outlet and creates a backflow inside the diluent supply. This would lead to a contamination of the diluent supply. Figure 3 is a vertical section view of the dispenser of Figure 1 according to the present invention in the area of the mixing chambers 3. In this figure the chutes 6 have been withdrawn to make the water supply more clearly apparent. In the dispenser of the present invention the water supply tube 34 of each of the mixing chamber is part of the frame 2 of the dispenser only. The outlet 341 of the water supply tube is not part of the mixing chamber. The outlet 341 does not emerge in the wall of the mixing housing 33.
The water supply pipe 34 is designed so that a jet of water dispensed by the water supply pipe hits the internal face of the mixing housing wall next to the mixing housing top 33. Preferably the jet of water hits the housing a little bit under the top 33 so that a swirling curtain of water can rise above the hitting point without overflowing the top. Near its outlet 341 the water supply pipe 34 is oriented downwardly obliquely so as to direct water to the internal face of the mixing housing wall.
Due to the fact that the outlet 341 of the water supply tube is not part of the mixing chamber housing 33, no backflow of beverage in said tube can happen. Moreover all the internal surface of the housing wall can be rinsed by water which optimizes dissolution and final rinsing.
As illustrated the upper part of the mixing housing internal face is essentially vertically oriented and the supply tube 3 is oriented so that a jet of water delivered by said tube hits said vertically oriented internal face. Such a configuration enables an efficient production of a swirling curtain. Preferably at its outlet the supply tube 34 is oriented according to an angle a comprised between 20 and 30° with the horizontal. As illustrated in dotted lines in Figure 7 the section of the outlet can be circular and presents a diameter d comprised between 2 and 3 mm preferably. These preferred features can be applied to at least the last millimetres of the supply tube outlet as illustrated by the length in Figure 7. Figure 4 is a view from the top of the area of the mixing chambers 3 of the dispenser of
Figure 1. In this figure the chutes 6 have been withdrawn to make the water supply more clearly apparent. This figure illustrates how the water supply pipe 34 is designed so that its outlet emerges above the opened top 33 of the mixing housing. Figure 5 is a front view of the dispenser of Figure 1 in which the right mixing chamber was removed. It is made apparent that the water supply tube 34 is only part of the frame 2. Contrary to the mixing chambers of the state of the art it is no more necessary to disconnect or connect the water supply tube of the mixing chamber to the water supply in the frame of the dispenser. The mounting and dismounting of the mixing chamber are simplified for the operator. In the present invention the water supply pipe 34 can be made of a flexible material so that if the operator hits the water supply tube 34 with the mixing chamber during mounting and dismounting no piece of material is hurt.
Figure 6 is a side section view of the dispenser of Figure 1 in the area of the mixing chambers. It provides a section view of the left mixing chamber in Figure 1 . It illustrates how the steam evacuation cap 7 is placed above the mixing chamber 3 by sliding the steam cap side 72 parts around the external wall of the housing of the mixing chamber. In the back side of the steam cap that faces the frame 2 the steam cap 7 presents an opening 71 . This opening 71 enables the water tube 34 attached to the frame 2 to emerge above the mixing chamber 3. The top 71 1 of said opening can be connected to a steam box 9 that is a conduit for evacuating steam.

Claims

1. Beverage dispenser (1 ) for mixing a soluble product and water comprising :
- a frame (2) for supporting the components of the dispenser,
- a mixing chamber (3) comprising a mixing housing (31 ) and a whipper device (32) lodged in the mixing housing, wherein the top (33) of the mixing housing is opened,
- a water supply pipe (34) for introducing water in the mixing chamber through the opened top (33) of the mixing housing, wherein the water supply pipe is part of the frame only.
2. Beverage dispenser according to Claim 1 wherein the water supply pipe (34) is designed so that a jet of water dispensed by the water supply pipe hits the internal face of the mixing housing wall next to the mixing housing top (33).
3. Beverage dispenser according to Claim 1 or 2 wherein the water supply pipe (34) is designed so that its outlet emerges above the opened top (33) of the mixing housing and so that a jet of water dispensed by the water supply tube is oriented downwardly obliquely.
4. Beverage dispenser according to any one of the precedent claims wherein the upper part of the mixing housing internal face is essentially vertically oriented and the supply tube (34) is oriented so that a jet of water delivered by said tube hits said vertically oriented internal face.
5. Beverage dispenser according to any one of the precedent claims wherein :
- the supply tube (34) presents at its outlet a section having a surface equivalent to the surface of a circular area of a diameter comprised between 2 and 3 mm, and
- at its outlet the supply tube (34) is oriented according to an angle comprised between 20 and 30° with the horizontal.
6. Beverage dispenser according to any one of the precedent claims wherein the water supply pipe (34) is made of a flexible material.
7. Process for preparing a beverage with a dispenser according to any one of Claims 1 to 6 comprising :
- introducing a dose of soluble product in the mixing chamber (3), - feeding water through the water supply pipe (34) to create a jet of water, said jet of water hitting the internal face of the mixing housing next to the mixing housing top (33),
- controlling the water flow dispensed through the water supply pipe in such a manner that the water forms a swirling curtain down the internal face of the mixing housing.
8. Process according to Claim 7 wherein water is introduced so that water forms vortex, said vortex raising up along the internal wall of the housing.
9. Process according to Claim 7 wherein water is introduced so that water forms vortex, said vortex starting at the upper possible height in the internal wall of the housing and slides down from this height.
PCT/EP2014/070269 2013-09-24 2014-09-23 Beverages dispenser using mixing chambers WO2015044147A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13185735 2013-09-24
EP13185735.1 2013-09-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3354173A1 (en) * 2017-01-25 2018-08-01 Jakob Gerhardt GmbH Mixing device for a beverage machine and beverage machine having the mixing device
DE102022201042A1 (en) 2022-02-01 2023-08-03 Sielaff GmbH & Co. KG Automatenbau Herrieden Mixing device, cleaning module, cleaning module cassette, method for producing a mixing device and a cleaning module and method for cleaning a mixing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1782720B1 (en) * 1966-06-22 1971-03-04 Willi Spengler MIXING DEVICE FOR A SELF-SELLING BEVERAGE
EP1116464A1 (en) * 2000-01-10 2001-07-18 Bravilor Holding B.V. Instant drinks machine, in particular for coffee, and method for the preparation of an instant drink, such as coffee
WO2009007811A2 (en) * 2007-07-10 2009-01-15 N & W Global Vending S.P.A Mixer for a hot beverage vending machine
WO2012049265A1 (en) * 2010-10-14 2012-04-19 Nestec S.A. Beverage dispenser with whipper assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1782720B1 (en) * 1966-06-22 1971-03-04 Willi Spengler MIXING DEVICE FOR A SELF-SELLING BEVERAGE
EP1116464A1 (en) * 2000-01-10 2001-07-18 Bravilor Holding B.V. Instant drinks machine, in particular for coffee, and method for the preparation of an instant drink, such as coffee
WO2009007811A2 (en) * 2007-07-10 2009-01-15 N & W Global Vending S.P.A Mixer for a hot beverage vending machine
WO2012049265A1 (en) * 2010-10-14 2012-04-19 Nestec S.A. Beverage dispenser with whipper assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3354173A1 (en) * 2017-01-25 2018-08-01 Jakob Gerhardt GmbH Mixing device for a beverage machine and beverage machine having the mixing device
DE102022201042A1 (en) 2022-02-01 2023-08-03 Sielaff GmbH & Co. KG Automatenbau Herrieden Mixing device, cleaning module, cleaning module cassette, method for producing a mixing device and a cleaning module and method for cleaning a mixing device

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