EP2031328A1 - Un équipement pour réfrigérer les boissons - Google Patents

Un équipement pour réfrigérer les boissons Download PDF

Info

Publication number
EP2031328A1
EP2031328A1 EP07425549A EP07425549A EP2031328A1 EP 2031328 A1 EP2031328 A1 EP 2031328A1 EP 07425549 A EP07425549 A EP 07425549A EP 07425549 A EP07425549 A EP 07425549A EP 2031328 A1 EP2031328 A1 EP 2031328A1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
evaporator
temperature
tank
cooling fluid
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.)
Withdrawn
Application number
EP07425549A
Other languages
German (de)
English (en)
Inventor
Giulio Guadalupi
Riccarco Guadalupi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vin Service SRL
Original Assignee
Vin Service SRL
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 Vin Service SRL filed Critical Vin Service SRL
Priority to EP07425549A priority Critical patent/EP2031328A1/fr
Publication of EP2031328A1 publication Critical patent/EP2031328A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F25D31/002—Liquid coolers, e.g. beverage cooler
    • F25D31/003—Liquid coolers, e.g. beverage cooler with immersed cooling element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details
    • B67D1/0857—Cooling arrangements
    • B67D1/0858—Cooling arrangements using compression systems
    • B67D1/0859—Cooling arrangements using compression systems the evaporator being in direct heat contact with the beverage, e.g. placed inside a beverage container
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/10—Sensors measuring the temperature of the evaporator

Definitions

  • the present invention refers to a beverage refrigeration equipment comprising a refrigerator device of the type provided with at least one evaporator for refrigerating a heat transfer liquid contained in a tank wherein is disposed part of a beverage supply circuit.
  • the temperature reached by the beverage passage duct, or by the housings, within the (heat transfer liquid) bath in the aforementioned tank, must be carefully controlled and, in this connection, is known art how to regulate the refrigerator device such that the heat transfer liquid contained in the tank, usually water, is cooled to an extent such as to generate an ice layer, having a pre-defined thickness around the evaporator coil. Indeed this ice layer performs the heat accumulating function to cooperate in keeping the more fixed the bath temperature is possible.
  • the heat transfer liquid thermal conditions within the tank are maintained approximately fixed, to a temperature next to the solidification temperature of the same heat transfer liquid, and the thermodynamic conditions of the beverage are maintained approximately fixed as well.
  • ice bank - To avoid an excessive or insufficient ice formation around the evaporator in the tank - in this case called ice bank - and / or nevertheless to maintain the desired beverage temperature fixed, and thereby of the heat transfer liquid, is know how to use automatic means for regulating the heat transfer liquid temperature including at least a temperature detecting sensor for the heat transfer liquid and / or the beverage conduits, functionally connected to a automatic operation controller (e. g. a thermostat) of the refrigerator device.
  • a temperature detecting sensor for the heat transfer liquid and / or the beverage conduits functionally connected to a automatic operation controller (e. g. a thermostat) of the refrigerator device.
  • the refrigerator device regulation operated by automatic means for regulating the temperature, must be especially accurate, because a heat transfer liquid temperature excessively low might cool too much the beverage to be delivered, with possible glaciation thereof within the supplying conduits, whereas a too high temperature might involve an insufficient beverage cooling, with consequent less broached beverage quality of the taste being perceived by user.
  • Such carefulness is particularly important in such a case when the beverage to be chilled is beer, or any other beverage with alcoholic content, which is usually cooled to a temperature below 6 °C (normally between 2 °C to 5 °C) by using a ice bank, which tank is filled with water only. It is however growing the practice of serving beer at a temperature next to 0 °C (normally between - 2°C to + 2 °C) by using an ice bank, which tank contains a low concentration mixture of water and glycol. In this case, also little temperature variations of the heat transfer liquid will cause undesirable thermal beer conditions determining a deterioration of the broached beer taste.
  • the automatic means for controlling the ice bank temperature of the known art provide for disposing one or more temperature sensors, e.g. thermistors, within the containment tank of the heat transfer liquid to detect instantly the temperature thereof, and thereby to transmit this detection, or a related signal thereto, to the refrigerator device controller.
  • one or more temperature sensors e.g. thermistors
  • the European Application EP-A-0 315 439 in the name of THE COCA COLA CO. describes a ice bank, of the type above mentioned, wherein a thermistor connected to a controller of the refrigerator device operation is disposed within a tank containing the heat transfer liquid, in a location nearby the evaporator coil of the same refrigerator device.
  • the thermistor location might be regulated by the operator during the operation of the ice bank, such a way that the thermistor is placed adequately far from the ice layer creating around the evaporator coil itself.
  • Such a solution does not allow an exact temperature control of the heat transfer liquid, because while the equipment is operating there are several convective flows at different temperatures inside the heat transfer liquid, due, for instance, to the interaction with the beverage flow within the supplying circuit portion disposed in the equipment tank and / or to the interaction with the environment temperature surrounding the tank, which might determine false detections of the temperature by the thermistor (or other thermometric sensor), with consequent inaccurate regulation of the refrigerator device.
  • the US patent n°. 2,459,337 in the name of RANEY although non relating to a beverage supplying circuit, describes a ice bank for refrigerating beverages in single housings, wherein such housings are fitted in a tank containing a heat transfer liquid that is cooled by a suitable refrigerator device evaporator.
  • the RANEY patent provides that the temperature regulation in the tank is realized by an automatic controller of the same refrigerator device, functionally connected to two temperature sensors. More particularly, the solution described in US 2,459,337 teaches to constrain the temperature sensor directly to the coil evaporator, which is in turn attached on a plate extending to the whole depth and width of the tank.
  • the RANEY's device arrangement is such that the temperature being recorded by the aforementioned sensor constrained to the evaporator - as well described, on the other hand, in the same RANEY patent - is the temperature reached by the plate itself; temperature that might be, for the remarkable spatial extent of the plate, quite different either from the cooling fluid temperature circulating in the refrigerator device evaporator, since the plate is in heat transfer relationship with a wide surface of the liquid contained in the tank, and from the temperature acquired by the same heat transfer liquid in the tank.
  • An other object of the present invention is to provide a beverage refrigerator equipment allowing an accurate detection, direct or not, of the temperature obtained by the heat transfer liquid collocated in the tank of the same refrigerator equipment.
  • the equipment for beverage refrigeration comprises at least one refrigerator device, provided with at least one cooling fluid circulating evaporator, for refrigerating a heat transfer liquid contained in at least one tank, wherein is disposed part of a supplying circuit for the beverages, such evaporator being connected to the equipment tank, as well as means for temperature regulation of heat transfer liquid.
  • Such means for temperature regulation comprise at least one temperature detecting sensor and at least one operation controller of the refrigerator device.
  • said evaporator comprises at least one duct part for the cooling fluid, preferably belonging to a coil, that is in heat transfer relationship with only a fluid surrounding thereto, for example the said heat transfer liquid and / or the surrounding environment air, and the said temperature detecting sensor is constrained, in close contact, to that duct part of evaporator situated in heat transfer relationship with the surrounding fluid only.
  • the temperature sensor e. g. a thermistor
  • a thermistor in contact with a coil portion or other circulation duct part of the evaporator cooling fluid, at first surrounded by the heat transfer liquid and / or the environment air exclusively, allows indeed to detect the temperature of the cooling fluid itself within the coil with a reduced margin for error, substantially the temperature not suffering from thermodynamic changes which the bath is submitted to, and being closely related to the mean temperature reached by the heat transfer liquid in the tank.
  • the temperature sensor basically the latter is thermally insulated from the remaining heat transfer liquid, and therefore it might detect the temperature of the cooling fluid within the coil more accurately.
  • the senor is preferably situated next to or at the cooling fluid outlet section of the evaporator, the outlet section being situated at the open surface of the heat transfer liquid in the refrigerator equipment tank.
  • a method for the regulation of the temperature of a heat transfer liquid contained in a beverage refrigerator equipment tank comprising a refrigerator device provided with at least one cooling fluid circulating evaporator connected to said tank.
  • Such a method comprises the steps of:
  • the method of the present invention provides that in step a) of detecting the heat transfer liquid temperature, the temperature of the cooling fluid within the refrigerator device evaporator is to be substantially detected.
  • thermometric probe in a duct length for the evaporator cooling fluid
  • the particular embodiment of the beverage refrigerator equipment herein described comprises a refrigerator device 1, of the kind provided with a cooling fluid circulating evaporator 3, that is disposed to cool a heat transfer liquid in the tank 2, within there is also part of the refrigeration circuit for the beverages, in itself known in the art.
  • the refrigerator device 1 herein illustrated is of the vapour - compression type (having reverse thermodynamic cycle), wherein a cooling fluid, that is susceptible to change phase during the cycle, is alternatively subjected to compression and expansion (isenthalpic lamination), having two intermediate phases for heat transferring and absorbing, respectively.
  • a refrigerator device 1 is composed of a compressor 4, a condenser 6, wherein the heat transferring to environment takes place, being forced by a fan 5, a isenthalpic lamination valve (not shown) and an evaporator 3, formed by a suitable metallic coil, wherein the heat absorbing from outside takes place.
  • this evaporator coil 3 in the equipment herein illustrated, is shaped as cylindrical helix and is constrained to the inner wall of the tank 2 by the bracket 7. It is to be observed that this evaporator arrangement 3 is only illustrative and any other arrangement allowing it to be connected to this tank 2, in a heat transfer relationship, or better directly or not to the heat transfer liquid, is anyway comprised in the protection scope of this patent right.
  • a beverage supplying circuit of which can be seen a connection 10 only, e. g. composed of ducts or housings (reservoirs) for the beverages themselves.
  • This part of a beverage supplying circuit situated in the tank 2 is thereby cooled by the refrigerator device 1, due to the evaporator 3, through interposing a heat transfer liquid contained in the same tank 2, having the goal not only to make effective and homogeneous the heat transferring from the beverages to the same evaporator 3, but also to substantially maintain the thermodynamic condition stable within the tank 2.
  • This heat transfer liquid might be water only, or a mixture of water and other substances for lowering its solidification temperature, or any other liquid with suitable thermal inertia and predefined solidification temperature.
  • this heat transfer liquid is preferably comprised of a water and glycol mixture.
  • the beverage refrigerator equipment herein illustrated comprises also means 8, 9 for regulating the temperature reached by the aforementioned heat transfer liquid, comprising at least one temperature sensor 8, e. g. made up of a thermo - resistance or thermistor, and a respective controller 9 (thermostat) of the refrigerator device 1 operations, preferably working on the compressor 4 in the particular device 1 herein illustrated.
  • a temperature sensor 8 e. g. made up of a thermo - resistance or thermistor
  • controller 9 thermostat
  • the thermostat 9 based on temperature readings made by the sensor 8, adjusts the operation of the compressor 4, by activating or deactivating it in case of the detected temperature is higher or lower to the predefined one, respectively.
  • the senor 8 is located in close contact to a portion 12 of an evaporator duct 3, the portion 12 being in heat transfer relationship only with a fluid surrounding thereto, that is preferably with the heat transfer liquid in the tank 2 only, or with the environment air around the same tank 2.
  • the senor 8 is attached, in the particular embodiment of the invention herein illustrated, on a coil length of evaporator 3, that is surrounded by the heat transfer liquid only in the tank 2 and not being in heat transfer relationship with other members, e.g. the tank inner walls 2 or the brackets 7.
  • attaching the sensor 8 to the evaporator 3 might be also carried out at a part of a duct for the cooling fluid of the same evaporator 3 that is placed outside the tank, such a way to be surrounded by the environment air only. Moreover, this sensor might be situated not outside the coil only, but also inside thereof.
  • the senor 8 is specifically attached to an ending length 12 of the evaporator coil 3, substantially at the cooling fluid outlet section from the same evaporator 3 and just before the thermally insulating sheath 11, beneath the heat transfer liquid open surface in the tank 2.
  • the formation of a ice layer over the outer surface of the evaporator coil 3 cooperates in even further insulating the sensor 8 from the thermal conditions of the remaining heat transfer liquid in the tank 2, allowing a even more accurate detection of the heat transfer temperature in the evaporator 3.
  • the cooling fluid temperature is detected in proximity of at least part 12 of a duct for the cooling fluid (the duct could belong to a metallic coil) of the evaporator 3, in heat transfer relationship with a surrounding fluid only, and such a detection might preferably be determined in proximity to or at the cooling fluid outlet section from the evaporator itself 3.
  • the Applicant could notice the continuously maintaining of the optimal thermal conditions for broaching beer using a water and glycol bath at 5 ° BRIX and regulating the thermostat 9 thereby to maintain the temperature - detected by the sensor 8 - at -6 °C.
  • the Applicant observed the formation of an ice layer surrounding the evaporator coil 3 having a thickness of about 40 mm and a bath temperature substantially fixed and equal to -2 °C (i.e. of the heat transfer liquid in the tank 2), this temperature being optimal for broaching beer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP07425549A 2007-08-31 2007-08-31 Un équipement pour réfrigérer les boissons Withdrawn EP2031328A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07425549A EP2031328A1 (fr) 2007-08-31 2007-08-31 Un équipement pour réfrigérer les boissons

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425549A EP2031328A1 (fr) 2007-08-31 2007-08-31 Un équipement pour réfrigérer les boissons

Publications (1)

Publication Number Publication Date
EP2031328A1 true EP2031328A1 (fr) 2009-03-04

Family

ID=38844999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425549A Withdrawn EP2031328A1 (fr) 2007-08-31 2007-08-31 Un équipement pour réfrigérer les boissons

Country Status (1)

Country Link
EP (1) EP2031328A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538386A (zh) * 2012-03-16 2012-07-04 台州市双马塑业有限公司 一种啤酒快速制冷饮用机
US20230054529A1 (en) * 2019-05-17 2023-02-23 Pepsico, Inc. Water dispensing station

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459337A (en) * 1945-06-01 1949-01-18 Ranco Inc Liquid cooler including control apparatus for limiting ice formation thereon
GB2059038A (en) * 1979-09-14 1981-04-15 Paxman N E Refrigerated probes
EP1067088A1 (fr) * 1999-07-02 2001-01-10 The BOC Group plc Dispositif de réfrigération de boissons à la pression
EP1310752A1 (fr) * 2001-11-08 2003-05-14 CELLI S.p.A. Dispositif pour la stabilisation géométrique des évaporateurs du type à double spirale pour des appareils de distribution de boissons

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459337A (en) * 1945-06-01 1949-01-18 Ranco Inc Liquid cooler including control apparatus for limiting ice formation thereon
GB2059038A (en) * 1979-09-14 1981-04-15 Paxman N E Refrigerated probes
EP1067088A1 (fr) * 1999-07-02 2001-01-10 The BOC Group plc Dispositif de réfrigération de boissons à la pression
EP1310752A1 (fr) * 2001-11-08 2003-05-14 CELLI S.p.A. Dispositif pour la stabilisation géométrique des évaporateurs du type à double spirale pour des appareils de distribution de boissons

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538386A (zh) * 2012-03-16 2012-07-04 台州市双马塑业有限公司 一种啤酒快速制冷饮用机
US20230054529A1 (en) * 2019-05-17 2023-02-23 Pepsico, Inc. Water dispensing station

Similar Documents

Publication Publication Date Title
US10788250B2 (en) Ice making assemblies and methods for making clear ice
US6662573B2 (en) Cooling bank control assembly for a beverage dispensing system
KR20110088510A (ko) 음료수 냉각장치, 음료수 냉각장치를 포함하는 냉장고, 및 음료수를 냉각하는 방법
EP0985120B1 (fr) Appareil et methode de controle d'un systeme de refrigeration et systeme de bac a accumulation de glace
US6324857B1 (en) Laboratory thermostat
EP2031328A1 (fr) Un équipement pour réfrigérer les boissons
CN108603708B (zh) 具有阀门的制冷设备
GB2465632A (en) Icebank cooler
CN210279001U (zh) 自动监控调节水浴槽液位的恒温水浴振荡器
JP2023104991A (ja) 極低温手術システム
KR101403378B1 (ko) 음용수 냉각장치의 온도조절시스템
JP3504180B2 (ja) 冷蔵庫の食品温度測定装置
WO2001001052A1 (fr) Ensemble de commande pour groupe frigorifique
EP3610209B1 (fr) Un bain refroidissant pour un liquide à refroidir
JP2778924B2 (ja) 飲料冷却機
RU2562947C2 (ru) Бытовой прибор, содержащий систему для розлива напитка, а также способ и фильтрующий картридж для розлива напитка
KR100759339B1 (ko) 김치냉장고의 온도제어방법
WO2005038364A1 (fr) Chambre froide de stockage et materiel de refroidissement
JP5262244B2 (ja) 冷蔵庫
CN117363435A (zh) 酿造设备及其控制方法、装置和计算机设备
Torras et al. Experimental Analysis of a Draft Beer Ice Bank Machine
KR20090066782A (ko) 냉각 시간을 표시하고 냉각 속도를 조절하는 냉장고 및방법
KR101401619B1 (ko) 냉장고의 룸온도 표시방법

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20090717

17Q First examination report despatched

Effective date: 20090821

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110301