WO2022106367A1 - Machine à boisson chaude, en particulier machine à café, et procédé pour faire fonctionner une telle machine - Google Patents

Machine à boisson chaude, en particulier machine à café, et procédé pour faire fonctionner une telle machine Download PDF

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Publication number
WO2022106367A1
WO2022106367A1 PCT/EP2021/081731 EP2021081731W WO2022106367A1 WO 2022106367 A1 WO2022106367 A1 WO 2022106367A1 EP 2021081731 W EP2021081731 W EP 2021081731W WO 2022106367 A1 WO2022106367 A1 WO 2022106367A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
generator
steam generator
steam
hot water
Prior art date
Application number
PCT/EP2021/081731
Other languages
German (de)
English (en)
Inventor
Bernd Buchholz
Marcus Meyer
Nico Stellhorn
Original Assignee
Melitta Professional Coffee Solutions GmbH & Co. KG
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 Melitta Professional Coffee Solutions GmbH & Co. KG filed Critical Melitta Professional Coffee Solutions GmbH & Co. KG
Priority to JP2023525071A priority Critical patent/JP2023549318A/ja
Publication of WO2022106367A1 publication Critical patent/WO2022106367A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
    • A47J31/469—Details of hydraulic circuits
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/54—Water boiling vessels in beverage making machines
    • A47J31/542—Continuous-flow heaters

Definitions

  • Hot drinks machine in particular fully automatic coffee machine, and method for operating such a machine
  • the present invention relates to a hot drinks machine, in particular a fully automatic coffee machine, according to claim 1 and a method for operating a fully automatic coffee machine according to claim 8.
  • Fully automatic coffee machines in which coffee beans are freshly ground and the coffee powder produced in this way is fed to a brewing chamber in which a coffee drink is prepared by hot water from a hot water generator being pressed through the compacted ground coffee, are known from the prior art in a wide variety of designs and variants.
  • a fully automatic coffee machine which has at least the following:
  • a steam and hot water supply with a steam generator that can be fed with water through a steam generator feed line and with a hot water generator that can be fed with water;
  • the water which is to be fed to the hot water generator, can first be guided through or along the steam generator before it can be guided into the hot water generator, a heat exchanger being formed in the region of the steam generator.
  • a supply line to the hot water generator has a changeover valve and a branch routed through the steam generator or along the steam generator and a branch routed directly into the hot water generator.
  • the switching valve offers the option of directing the water to the hot-water generator and heating it in the hot-water generator in order to prevent energy from being drained from the steam generator. Necessary post-heating phases of the steam generator before the preparation of coffee-milk-mix beverages, which would otherwise be necessary, e.g. to produce milk froth, are thus reduced or at best avoided.
  • the heating of the hot water generator can be put into operation parallel to the operation of the steam generator for preparing milk froth, so that advantageously performance-related waiting times can be compensated for by such a parallel operation.
  • the water to be heated flows via the branch of the supply line that is routed through the steam generator or along the steam generator, in order to then flow preheated into the hot water generator, while the water flows directly into the hot water generator guided branch of the supply line is blocked.
  • the water to be heated flows via the branch of the supply line that is routed directly into the hot water generator into the hot water generator in order to be heated there by the heater of the hot water generator, while the the steam generator or the branch of the supply line running along the steam generator is blocked.
  • the preheating capacity of the heat exchanger is increased by further coiled tubing, which are formed from the branch of the supply line in the area of the steam generator that is routed through the steam generator or along the steam generator, so that the heat exchanger can be used as a Coiled tube heat exchanger is working.
  • FIG. 1 a schematic representation of the water and steam supply of a fully automatic coffee machine according to the invention
  • Figure 2 a schematic representation of the water and steam supply
  • FIG. 3 a schematic representation of a hydraulic system of a fully automatic coffee machine according to the invention.
  • FIG. 1 shows a schematic representation of a steam and hot water supply 1 for a hot drinks machine, the drinks machine being designed here in particular as a fully automatic coffee machine, more precisely as a fully automatic coffee machine.
  • the hot drinks machine can also be designed as an automatic tea-making machine, for example.
  • the steam and hot water supply 1 of the fully automatic coffee machine can be fed with water through a drinking water network.
  • the fully automatic coffee machine is usually permanently connected to a tapping point 2 provided for this purpose.
  • a pump 3 and optionally a water meter 4, which can be designed as an impeller meter, optionally also a non-return valve 5 and again optionally a pressure gauge 6 can be connected downstream.
  • the steam and hot water supply 1 of the fully automatic coffee machine also has a steam generator 10 - also referred to as a steam boiler in technical jargon.
  • the steam generator 10 here has a container 11 into which water can flow--here from the drinking water network--via a steam generator supply line 12 and can be heated by a heater 13, preferably electrically.
  • the steam generator 10 is intended to generate steam from the inflowing water through the operation of the heater 13 , which steam collects above the water level and can be discharged from the steam generator 10 through a steam line 14 .
  • the steam generator 10 can have a level sensor 15 .
  • the steam generated in this way can be used, for example, to froth milk, in order to use the milk foam generated by the steam and air to prepare mixed coffee and milk drinks, such as milk coffee or latte macchiato.
  • the steam and hot water supply 1 of the fully automatic coffee machine also has a hot water generator 20 - also referred to as a water boiler in technical jargon.
  • the hot water generator 20 has a container 21 in which water can be heated by a heater 22, preferably electrically.
  • the hot water generator 20 is intended to generate hot water at a temperature of over 60° C. from the inflowing water by operating the heater 22, as is usually used for the preparation of coffee beverages.
  • the hot water generated in this way can be discharged from the hot water generator 20 through a hot water line 23 .
  • the hot water generator 20 can have a pressure sensor 24 .
  • a low mains voltage e.g. 1 10 V
  • the supply line 16 and the steam generator 10 advantageously act like a heat exchanger 17.
  • the preheating capacity of this heat exchanger 17 can be increased by additional coiled tubing, which is formed from the branch 16a of the supply line 16 that is routed through the steam generator 10 or along the steam generator 10 in the region of the steam generator 10 , be increased as required, so that the heat exchanger 17 then works like a coiled tube heat exchanger.
  • the water that is to be fed to the hot water generator 20 can first be routed through the steam generator 10 or along it before it can be routed into the hot water generator, with a heat exchanger 17 being formed in the region of the steam generator 10 .
  • the supply line 16 has the branch 16a running through the steam generator 10 or along the steam generator 10 and a branch 16b running directly into the hot water generator 20—ie not through the steam generator 10 or along the steam generator 10.
  • the switching valve 30 can be designed as a 3/2-way valve and is shown here switched to a second switching position.
  • the changeover valve 30 is preferably designed as a solenoid valve with spring reset, but it can also be designed differently.
  • the water to be heated flows via the branch 16a of the supply line 16, which is routed through the steam generator 10 or along the steam generator 10, in order to then flow preheated into the hot-water generator 20, while the branch 16b, which is routed directly into the hot-water generator 20, Lead 16 is blocked.
  • the water can flow into the hot water generator 20 only via the steam generator 10—that is, preheated.
  • the water to be heated flows via the branch 16b of the supply line 16, which is routed directly into the hot water generator 20, into the hot water generator 20, in order to be heated there by the heater 22 of the hot water generator 20, while the steam generator 10 or on the steam generator 10 along guided branch 16 of the supply line 16 is blocked.
  • This switch position is set when a coffee-milk mixed drink is to be prepared.
  • the switchover valve 30 offers the option of directing the water to the hot-water generator 20 and heating it in the hot-water generator 20 in order to prevent an outflow of energy from the steam generator 10 .
  • the heater 22 of the hot water generator 20 can be put into operation parallel to the operation of the steam generator 10 for preparing milk froth, so that performance-related waiting times can be compensated for by such a parallel operation.
  • FIG. 3 shows a fully automatic coffee machine according to the invention.
  • the fully automatic coffee machine has a brewing unit 40 in which the hot drink to be prepared-here preferably coffee-is brewed.
  • Brewing units 40 of fully automatic coffee machines are known from the prior art, so that a detailed description of the brewing unit 40 is omitted at this point.
  • the hot water required for the brewing process is supplied to the brewing unit 40 via the hot water line 23 .
  • a brewing valve 50 is inserted in the hot water line 23 between the hot water generator 20 and the brewing unit 40 .
  • the brewing unit 40 is assigned at least one coffee grinder, here two coffee grinders 61, 62, which supply the brewing unit 40 with coffee powder.
  • the respective coffee grinder 61, 62 can be operatively connected to a storage container for coffee beans. Due to the two coffee grinders 61, 62 and their associated storage containers, coffee beans of different types and/or roasts can be used to prepare the coffee beverage or coffee-milk mixed beverage.
  • the brewing valve 50 controls the flow of hot water to the brewing unit 40.
  • the brewing valve 50 is designed here by way of example as a 2/2-way valve and is shown here switched to a second switching position. As shown in FIG. 3, the brewing valve 50 is preferably designed as a solenoid valve with spring return.
  • hot water can flow through the hot water line 23 from the hot water generator 20 into the brewing unit 40 .
  • the hot water line 23 is shut off so that no hot water can flow into the brewing unit 40 .
  • the coffee beverage brewed in the brewing unit 40 flows through a beverage line 41 into a first, central beverage outlet 70 and is dispensed in the first, central beverage outlet 70 into a drinking vessel placed under the optionally vertically displaceable first, central beverage outlet 70 .
  • a diverting valve 80 is used in the beverage line 41 for this purpose
  • the diverter valve 80 controls the beverage flow to the first, central beverage outlet 70 or to the drain 71, this direction of flow is preferably used in the cleaning cycles of the machine.
  • the diverting valve 80 is designed here as a 3/2-way valve and is shown here engaged in a second switching position. As shown in FIG. 3, the diverting valve 80 is preferably designed as a solenoid valve with spring return.
  • a brewed coffee beverage can flow through the beverage line 41 from the brewing unit 40 into the first, central beverage outlet 70 .
  • the cleaning liquid can flow into a drain 71 in the cleaning cycle.
  • a check valve 72 can be inserted in the line to the drain 71 .
  • the fully automatic coffee machine also has a milk system 90 .
  • the milk system 90 usually includes a device for milk foaming, in which milk foam is produced here with the aid of steam from milk and air.
  • the milk can be accommodated in a milk cooler 91, packaged in a conventional milk packaging 92, such as a beverage carton--for reasons of hygiene.
  • the milk system 90 is connected to the milk packaging 92 with a first milk line 93 .
  • the first milk line 93 can be designed as a hose.
  • the milk processed in the milk system 90 flows through a second milk line 94 into the first, central beverage outlet 70 and is in the first, central beverage outlet 70 -in under the optional vertically displaceable first, central beverage dispenser 70 parked drinking vessel issued.
  • the fully automatic coffee machine can have an auxiliary system 100 .
  • the auxiliary system 100 is supplied with hot water via a hot water line 101 .
  • the hot water line 101 branches off from the hot water line 23 downstream in front of the brewing valve 50 in the direction of the auxiliary system 100 .
  • the auxiliary system 100 is supplied with water via a water pipe 102 .
  • the coffee machine also has a controller that controls or regulates the preparation of a hot drink in the coffee machine, which is not shown here.
  • the fully automatic coffee machine is provided with a steam and hot water supply 1, with the steam and hot water supply 1 usually being fed with water by a drinking water network.
  • the steam and hot water supply 1 has a steam generator 10, the steam generator 10 having a container 11 into which water, here water from the drinking water network, can flow via a steam generator supply line 12 and which can be heated by a heater 13, preferably electrically and as a result, steam can be generated from the water, which steam can be discharged from the steam generator 10 from a steam line 14 .
  • the steam and hot water supply 1 has a hot water generator 20, the hot water generator having a container 21 in which the water can be heated, preferably electrically, by a heater 22 and the water can thereby be heated to a predefined preparation temperature.
  • the water flows from the drinking water network through a first section 16a of the feed line 16 into the steam generator 10;
  • the water from the drinking water network is preheated in the supply line 16 in the steam generator 10;
  • the water preheated in the steam generator 10 flows through a second section 16b of the supply line 16 into the hot water generator 20.
  • beverages can be prepared at a desirable speed—that is to say without a waiting time—in spite of a low output of the heater 22 of the hot water generator 20 without early reheating phases.
  • a switching valve 30 can optionally be used in the supply line 16 which is connected to the steam generator 10 .
  • the water can also flow directly into the hot water generator 20 via a part 16a′ of the first section 16a of the supply line 16, a water supply line 26 and a part 16b′ of the second section 16b of the supply line 16 through the switching valve 30 .
  • the supply line 16 to the steam generator 10 is then shut off.

Landscapes

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

Abstract

Une machine à café comprend au moins les éléments suivants : a) une alimentation en vapeur et en eau chaude (1) ayant un générateur de vapeur (10) qui peut être alimenté en eau par une conduite d'alimentation de générateur de vapeur (12), et un générateur d'eau chaude (20) qui peut être alimenté en eau ; b) une unité de percolation (40), dans laquelle la boisson chaude devant être préparée peut être préparée avec de l'eau provenant du générateur d'eau chaude (20) ; c) un moyen de distribution de boisson (70), à partir duquel la boisson préparée peut être versée dans un réceptacle. Ladite machine est caractérisée en ce que d) l'eau devant être acheminée vers le générateur d'eau chaude (20) peut être conduite dans le premier cas à travers le générateur de vapeur (10) ou le long de celui-ci, avant qu'elle puisse être conduite dans le générateur d'eau chaude (20), un échangeur de chaleur (17) étant formé dans la région du générateur de vapeur (10).
PCT/EP2021/081731 2020-11-18 2021-11-15 Machine à boisson chaude, en particulier machine à café, et procédé pour faire fonctionner une telle machine WO2022106367A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023525071A JP2023549318A (ja) 2020-11-18 2021-11-15 ホット飲料自動マシン、特にコーヒー全自動マシンならびにこのような自動マシンの動作のための方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020130422.6A DE102020130422A1 (de) 2020-11-18 2020-11-18 Heißgetränkeautomat, insbesondere Kaffeevollautomat sowie Verfahren zum Betrieb eines solchen Automaten
DE102020130422.6 2020-11-18

Publications (1)

Publication Number Publication Date
WO2022106367A1 true WO2022106367A1 (fr) 2022-05-27

Family

ID=78819469

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/081731 WO2022106367A1 (fr) 2020-11-18 2021-11-15 Machine à boisson chaude, en particulier machine à café, et procédé pour faire fonctionner une telle machine

Country Status (3)

Country Link
JP (1) JP2023549318A (fr)
DE (1) DE102020130422A1 (fr)
WO (1) WO2022106367A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012151629A1 (fr) * 2011-05-10 2012-11-15 Breville Pty Limited Appareil et procédé pour une cafetière améliorée
WO2016106474A1 (fr) * 2014-12-31 2016-07-07 吉诺工业有限公司 Dispositif d'alimentation d'eau chaude et de vapeur
WO2017068522A1 (fr) * 2015-10-21 2017-04-27 Elektra S.R.L. Machine à café professionnelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012151629A1 (fr) * 2011-05-10 2012-11-15 Breville Pty Limited Appareil et procédé pour une cafetière améliorée
WO2016106474A1 (fr) * 2014-12-31 2016-07-07 吉诺工业有限公司 Dispositif d'alimentation d'eau chaude et de vapeur
WO2017068522A1 (fr) * 2015-10-21 2017-04-27 Elektra S.R.L. Machine à café professionnelle

Also Published As

Publication number Publication date
JP2023549318A (ja) 2023-11-24
DE102020130422A1 (de) 2022-05-19

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