EP2520881A1 - Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série - Google Patents

Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série Download PDF

Info

Publication number
EP2520881A1
EP2520881A1 EP11165082A EP11165082A EP2520881A1 EP 2520881 A1 EP2520881 A1 EP 2520881A1 EP 11165082 A EP11165082 A EP 11165082A EP 11165082 A EP11165082 A EP 11165082A EP 2520881 A1 EP2520881 A1 EP 2520881A1
Authority
EP
European Patent Office
Prior art keywords
compartment
evaporator
fan
compartments
compressor
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.)
Ceased
Application number
EP11165082A
Other languages
German (de)
English (en)
Inventor
Matteo Vanelli
Paolo Sicher
Jutta Ziermaier
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP11165082A priority Critical patent/EP2520881A1/fr
Publication of EP2520881A1 publication Critical patent/EP2520881A1/fr
Ceased 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans

Definitions

  • the present invention relates to a refrigeration system for cooling at least two compartments comprising a compressor, a first compartment including a first evaporator and a fan associated therewith, a second compartment including a second evaporator, wherein said first and second evaporators are arranged in series and said first compartment is to be maintained at a temperature lower than said second compartment.
  • variable capacity compressors VCC which allow energy saving during the standard working mode of a refrigerator appliance. This is mainly due to the capability of increasing the cooling capacity only when required (door opening, start-up, temperature recovery after automatic de-frost), maintaining a low power absorption when higher values are not required.
  • Such variable capacity compressors may have an electric motor whose rotational speed can be adjusted, or may be of the kind in which the stroke of the compressor piston can be adjusted as well.
  • variable capacity compressor For the time being these variable capacity compressor have never been used in a mono-circuit combi refrigerator (two evaporators in series, one dedicated to freezer and one to refrigerator). The reason lies in the difficult to reach a proper balance of the dimension of the two evaporators, designed with respect to a particular value of overall cooling capacity. Increasing (or decreasing) the cooling capacity provided by the compressor could drive to an improper distribution of the cooling capacity between freezer and fresh food compartment evaporators. As a result, it becomes impossible to maintain the set temperature levels selected by the user in the two cavities.
  • the refrigeration system deals with a mono-circuit refrigerator appliance provided with a No-Frost freezer evaporator. This means that a forced airflow is blown across the freezer evaporator thanks to a dedicated fan.
  • VCC compressor turns on, it starts cooling both freezer and refrigerator evaporators with a certain cooling capacity. Once a door is opened, or another event which requires an increase in cooling capacity, comprising a low temperature setting selected by the user occurs in refrigerator compartment, a higher cooling capacity is required only in this compartment, while freezer compartment still keeps requiring the same level of cooling capacity already provided by the compressor. Control logic, according to refrigerator requirement, increases the cooling capacity provided by VCC. This generates an undesired over-cooling of the freezer compartment.
  • freezer fan is controlled in such a way that when no increase in cooling capacity is required in the freezer compartment (but it is required in fresh food compartment), it is turned off for limited periods, not removing heat from freezer evaporator. This allows taking advantage of the benefits of VCC, avoiding causing improper balance of the dimensions of two evaporators.
  • the cooling capacity delivered to the freezer compartment is controlled by changing the rotational speed of the fan, instead of controlling the fan with an ON-OFF duty cycle.
  • FIG 2 it is shown a condition in which the refrigeration circuit id optimized for a certain fixed cooling capacity provided by the compressor when the ambient temperature is 25°C.
  • temperature in both compartments (solid lines C and E) are cycling close to set-point values (dotted lines A and B).
  • This "balance" situation is maintained up to a perturbation of the system, as shown for instance in figure 3 where the ambient temperature is increased up to 32°C (this disturbance is taken only as an example, since every kind of disturbance leads to an "unbalanced" situation).
  • an increased cooling capacity is required and, as it clear by considering line E of figure 3 , the circuit is no longer balanced and the freezer evaporator 20 is cooled down too much.
  • the fresh food compartment evaporator 22 is schematically shown as a plate located in the cavity, it can be as well of the type in contact with the outside surface of the cavity liner. Also the freezer evaporator 20 can be of any kind used for no-frost evaporator.

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)
EP11165082A 2011-05-06 2011-05-06 Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série Ceased EP2520881A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11165082A EP2520881A1 (fr) 2011-05-06 2011-05-06 Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11165082A EP2520881A1 (fr) 2011-05-06 2011-05-06 Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série

Publications (1)

Publication Number Publication Date
EP2520881A1 true EP2520881A1 (fr) 2012-11-07

Family

ID=44340251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11165082A Ceased EP2520881A1 (fr) 2011-05-06 2011-05-06 Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série

Country Status (1)

Country Link
EP (1) EP2520881A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112093A1 (de) * 2018-07-12 2020-01-16 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998003825A1 (fr) * 1996-07-19 1998-01-29 Sunpower, Inc. Circuit de refrigeration comportant des evaporateurs en serie et un compresseur modulable
EP0990862A1 (fr) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Réfrigérateur-Congélateur avec deux évaporateurs respectivement pour chambres de réfrigération et de congélation
US6286326B1 (en) * 1998-05-27 2001-09-11 Worksmart Energy Enterprises, Inc. Control system for a refrigerator with two evaporating temperatures
US6327867B1 (en) * 1998-02-20 2001-12-11 Matsushita Refrigeration Company Refrigerator having a cooler mounted in each of a refrigerator compartment and a freezer compartment
US20030131618A1 (en) * 2002-01-15 2003-07-17 Takashi Doi Two-evaporator refrigerator having a controlled variable throttler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998003825A1 (fr) * 1996-07-19 1998-01-29 Sunpower, Inc. Circuit de refrigeration comportant des evaporateurs en serie et un compresseur modulable
US6327867B1 (en) * 1998-02-20 2001-12-11 Matsushita Refrigeration Company Refrigerator having a cooler mounted in each of a refrigerator compartment and a freezer compartment
US6286326B1 (en) * 1998-05-27 2001-09-11 Worksmart Energy Enterprises, Inc. Control system for a refrigerator with two evaporating temperatures
EP0990862A1 (fr) * 1998-10-02 2000-04-05 Kabushiki Kaisha Toshiba Réfrigérateur-Congélateur avec deux évaporateurs respectivement pour chambres de réfrigération et de congélation
US20030131618A1 (en) * 2002-01-15 2003-07-17 Takashi Doi Two-evaporator refrigerator having a controlled variable throttler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112093A1 (de) * 2018-07-12 2020-01-16 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Similar Documents

Publication Publication Date Title
CN106091566B (zh) 一种用于风冷冰箱的控制方法
US10088218B2 (en) Refrigerator and control method thereof
US20050086955A1 (en) Reduced energy refrigerator defrost method and apparatus
EP2711654A1 (fr) Réfrigérateur
US11371768B2 (en) Refrigerator and method for controlling the same
JP2014142171A (ja) 冷凍装置
KR101517248B1 (ko) 냉장고의 제어 방법
JP5856435B2 (ja) 冷蔵庫
KR102617277B1 (ko) 냉장고 및 그의 제어방법
JP5862867B2 (ja) 冷蔵庫
EP2520881A1 (fr) Système de réfrigération et procédé pour réfrigérer deux compartiments avec des évaporateurs en série
JP5262259B2 (ja) 冷蔵庫
JP6309156B2 (ja) 冷蔵庫
EP2437008B1 (fr) Appareil de réfrigération doté de deux évaporateurs en série et procédé de contrôle d'une telle application
EP2636976B1 (fr) Réfrigérateur hybride et son procédé de commande
JP2001272147A (ja) 冷蔵庫
KR102035133B1 (ko) 냉장고 및 그 운전 방법
EP2546591A1 (fr) Procédé de congélation rapide d'aliments
JP6166771B2 (ja) 冷蔵庫
JP2011153788A (ja) 冷蔵庫
KR100772233B1 (ko) 냉장고 및 냉장고의 제어 방법
KR100400470B1 (ko) 냉장고의 팬 제어방법
EP3732413B1 (fr) Glacière à compartiment spécial thermorégulé
KR102589265B1 (ko) 냉장고 및 그의 제어방법
KR100208336B1 (ko) 냉장고 및 그 구동제어방법

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): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20130507

17Q First examination report despatched

Effective date: 20150211

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

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

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20180528