EP3084323B1 - Kältegerät mit mehreren kältefächern - Google Patents

Kältegerät mit mehreren kältefächern Download PDF

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Publication number
EP3084323B1
EP3084323B1 EP14812547.9A EP14812547A EP3084323B1 EP 3084323 B1 EP3084323 B1 EP 3084323B1 EP 14812547 A EP14812547 A EP 14812547A EP 3084323 B1 EP3084323 B1 EP 3084323B1
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EP
European Patent Office
Prior art keywords
refrigeration
evaporator
expansion valve
temperature
refrigeration device
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.)
Active
Application number
EP14812547.9A
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German (de)
English (en)
French (fr)
Other versions
EP3084323A1 (de
Inventor
Astrid Klingshirn
Niels Liengaard
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL14812547T priority Critical patent/PL3084323T3/pl
Publication of EP3084323A1 publication Critical patent/EP3084323A1/de
Application granted granted Critical
Publication of EP3084323B1 publication Critical patent/EP3084323B1/de
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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the present invention relates to a refrigeration device having a plurality of refrigeration compartments for storing refrigerated goods at different temperatures.
  • the publication EP 1 344 997 A1 shows a refrigeration device comprising a first cooling compartment, a second cooling compartment and a third cooling compartment.
  • the first cooling compartment has a first evaporator.
  • the second cooling compartment has a second evaporator.
  • the third cooling compartment has a third evaporator. Between the first evaporator and the second evaporator, a first valve is connected. Between the second evaporator and the third evaporator, a second valve is connected. An inlet of the first evaporator does not have its own valve.
  • the publication JP 2001 133 112 shows analogous to the above-mentioned published patent application EP 1 344 997 A1 a refrigeration unit with three refrigerators, each with its own evaporator. Again, the first evaporator at its inlet no expansion valve.
  • the publication JP 2001 108 319 shows a refrigerator with two refrigerators.
  • the publication JP 2001 153 477 shows a refrigerator with two refrigerators.
  • Some special appliances such as wine cabinets, work with larger temperature ranges.
  • the temperature ranges include, for example, 5-22 ° C in up to three temperature zones.
  • These special devices are controlled by adjusting the operating time of each evaporator.
  • Other devices have flaps in an air duct that are gradually opened to reach individual temperature controlled zones. In these devices, however, there is only one evaporator with a fixed evaporation temperature.
  • a refrigeration device having a first refrigeration compartment for storing refrigerated goods at a first temperature, which comprises a first evaporator with a first controllable expansion valve at the refrigerant inlet of the first evaporator, and a second refrigeration compartment for storing refrigerated goods at a second temperature comprising a second evaporator with a second controllable expansion valve at the refrigerant inlet of the second evaporator, characterized in that a refrigerant outlet of the first evaporator is connected to the second controllable expansion valve at the refrigerant inlet of the second evaporator.
  • a refrigeration appliance is understood in particular to mean a household refrigerating appliance, that is to say a refrigeration appliance that is used for housekeeping in households or in the gastronomy sector is used, and in particular serves to store food and / or drinks at certain temperatures, such as a refrigerator, a freezer, a fridge-freezer, a freezer or a wine fridge.
  • the refrigeration device comprises a control unit for controlling the expansion valves.
  • the expansion valves can be centrally controlled by a control unit.
  • control unit has a non-volatile memory for storing a control program.
  • control unit is designed to control the first and the second expansion valve such that a refrigerant flow through the first evaporator remains constant.
  • control unit is designed to control the first and the second expansion valve such that a flow through the first expansion valve is increased when a flow through the second expansion valve is reduced.
  • control unit is designed to control the first and the second expansion valve in such a way that a flow through the first expansion valve is reduced when a flow through the second expansion valve is increased.
  • the first temperature is higher than the second temperature.
  • the second refrigeration compartment is a freezer compartment for storing refrigerated goods at a temperature below 0 ° C.
  • the refrigeration device includes a variable speed compressor. As a result, for example, the technical advantage is achieved that the cooling capacity of the refrigerator can be changed.
  • control unit is designed to control the speed of the compressor based on a predetermined cooling capacity.
  • the first refrigeration compartment comprises a first temperature sensor and the second refrigeration compartment comprises a second temperature sensor.
  • control unit is designed to control the first expansion valve and the second expansion valve on the basis of a first temperature measurement value of the first temperature sensor and a second temperature measurement value of the second temperature sensor.
  • the first or second expansion valve is infinitely adjustable.
  • the technical advantage is achieved that a fine and accurate adjustment of the temperatures is achieved.
  • the first or second expansion valve comprises a screw device with linear stroke to regulate the flow of refrigerant.
  • the refrigeration device comprises a third refrigeration compartment for storing refrigerated goods at a third temperature comprising a third evaporator with a third controllable expansion valve at the refrigerant inlet of the third evaporator and a refrigerant outlet of the second evaporator is connected to the third controllable expansion valve on Refrigerant inlet of the third evaporator connected.
  • Fig. 1 shows a schematic view of a refrigerator 100 with a first refrigeration compartment 101-1 for storing refrigerated goods at a first temperature, for example, a refrigerated compartment, and a second refrigerating compartment 101-2 for storing refrigerated goods at a second temperature, such as a freezer.
  • a first refrigeration compartment 101-1 for storing refrigerated goods at a first temperature
  • a second refrigerating compartment 101-2 for storing refrigerated goods at a second temperature, such as a freezer.
  • the refrigeration device 100 is used for example for cooling food and includes a refrigerant circuit with an evaporator, a compressor, a condenser and a throttle body.
  • the evaporator is a heat exchanger in which after expansion the liquid refrigerant is absorbed by heat absorption from the medium to be cooled, i. the air inside the refrigerator, is evaporated.
  • the compressor or compressor is a mechanically operated component that draws refrigerant vapor from the evaporator and expels it at a higher pressure to the condenser.
  • the condenser is a heat exchanger in which after compression, the evaporated refrigerant by heat transfer to an outer cooling medium, ie the Ambient air, is liquefied.
  • the throttle body is a device for the continuous reduction of the pressure by cross-sectional constriction.
  • the refrigerant is a fluid used for heat transfer in the cryogenic system which absorbs heat at low temperatures and low pressure of the fluid and releases heat at higher temperature and higher pressure of the fluid, usually including changes in state of the fluid.
  • Fig. 2 shows a view of a refrigerant circuit 119 with a plurality of evaporators 103-1, 103-2, ..., 103-n.
  • the first evaporator 103-1 is arranged in a first refrigeration compartment 101-1 of the refrigeration appliance 100
  • the second evaporator 103-2 is arranged in a second refrigeration compartment 101-2 of the refrigeration appliance 100
  • the third evaporator 103-n is arranged in a third refrigeration compartment 101-1. 3 of the refrigeration device arranged.
  • Each of the evaporators includes, in front of each of its refrigerant inlets 107-1, 107-2, ... 107-n, an expansion valve 105-1, 105, -2, ..., 105-n.
  • the evaporators 103-1, 103-2, ..., 103-n are connected in series.
  • a refrigerant outlet 109-1 of the first evaporator 103-1 is connected to the second controllable expansion valve 105-2 at the refrigerant inlet 107-2 of the second evaporator (103-2).
  • a refrigerant outlet 109-2 of the second evaporator 103-2 is connected to the third controllable expansion valve 105-n at the refrigerant inlet 107-n of the third evaporator 103-n.
  • the expansion valves 105-1, 105-2,..., 105-n are controllable by a control unit 115.
  • a control of the expansion valve 105-1, 105-2, ..., 105-n the cross-section and thus the pressure drop through the expansion valve 105-1, 105-2, ..., 105-n is controlled according to a suitable reference variable , In this case, a throttling of the refrigerant flow and a pressure drop take place.
  • the reference variable may be, for example, the pressure in the associated evaporator 103-1, 103-2,..., 103-n or the temperature in the respective refrigeration compartment 101-1, 101-2,..., 101-n.
  • the temperature in the cold compartments 101-1, 101-2, ..., 101-n is detected by respective temperature sensors 117-1, 117-2, ..., 117-3.
  • the temperature of the refrigerators 101-1, 101-2, ..., 101-n is adjustable via a customer and allows a wide range of temperatures in the respective refrigerators 101-1, 101-2, ..., 101-n
  • a freezer compartment -18 ° C in a refrigerator compartment 5 ° C
  • a VitaFresh compartment 0 ° C in a wine storage compartment 12 ° C
  • a storage compartment - 2 ... + 20 ° C in a basement storage compartment +8 ... + 14 ° C
  • a pressure ratio between the individual evaporators 103-1, 103-2, ..., 103-n in the refrigerant circuit 119 is maintained in the control of the expansion valves 105-1, 105-2, ..., 105-n.
  • the pressure between the expansion valves 105-1, 105-2, ..., 105n is at a level proportional to the throttle ratio is.
  • the total throttling in the system is P 0 -P n , where P 0 is the refrigerant pressure before the first evaporator 103-1 and P n is the refrigerant pressure after the nth evaporator 103-n.
  • the expansion valve 105-1 generates a pressure drop of P 0 -P 1 , where P 1 is the refrigerant pressure after the first evaporator 103-1.
  • the expansion valve 105-2 generates a pressure drop of P 1 -P 2 , where P 2 is the refrigerant pressure after the second evaporator 103-2.
  • the total throttling from a condenser 111 to the second evaporator 103-2 is P 0 -P 2 , ie (P 0 -P 1 ) + (P 1 P 2 ).
  • the first expansion valve 105-1 can be opened by an amount while the second expansion valve 105-2 is closed by the same amount, so that the total throttling P 0 -P 2 remains the same.
  • a higher refrigerant pressure prevails in the evaporator 103-1.
  • the evaporator 103-1 has a higher evaporation temperature and the compartment temperature increases.
  • the subsequent evaporator 103-2 experiences no difference in the refrigerant pressure. In the same way, the evaporator 103-2 can be adjusted.
  • the temperatures of the evaporators 103-1, 103-2, ..., 103-n are not directly related to the ambient temperature.
  • the first evaporator 103-1 may reach a temperature close to the condensing temperature.
  • the condensing temperature is approx. 15 ° C.
  • the refrigerating compartment 101-1 can be heated. If the refrigeration device 100 is placed in a garage or on a balcony, a freezing of refrigerated goods can be prevented.
  • the refrigerators 101-1, 101-2, ... 101-n become colder in turn.
  • the evaporator 103-1 is thus the warmest and the evaporator 103-n is the coldest.
  • the compressor 113 When the compressor 113 has a minimum speed, a minimum refrigeration capacity is generated.
  • the last cold compartment 101-3 having the lowest temperature takes the rest Cooling capacity on. It may happen that in the last cold compartment 101-3, the temperature is lower than initially set. However, the quality of frozen chilled goods is not adversely affected by an even lower temperature.
  • the compressor 113 In order to keep the temperatures in the refrigerators 101-1, 101-2, ... 101-n constant, the compressor 113 is in continuous operation. In the case of defrosting of an evaporator 103-1, 103-2,..., 103-n, the evaporation temperature may be temporarily set above the freezing point. However, this is rarely necessary since, because of the continuous operation of the compressor 113, the temperature difference between the evaporators 103-1, 103-2,..., 103-n and the respective refrigeration compartments 101-1, 101-2,... 101 -n is low. Therefore, under standard conditions, it is not necessary to defrost the respective evaporator 103-1, 103-2,..., 103-n, since it has a temperature above 0 ° C.
  • the compressor 113 has a speed control, so that different sized cooling capacities and low temperatures are adjustable. High cooling capacities at low temperatures are achieved at high speeds.
  • the customer has the opportunity to efficiently regulate the temperature of one or more cold storage compartments 101-1, 101-2, ... 101-n according to his needs. Since this control is performed via the refrigeration cycle 119, this is more efficient than comparable solutions with electric heating. By opening temperature ranges above 14 ° C, new storage options for the customer can be tapped, such as the targeted ripening of fruit and vegetables or the storage of bread.
  • the respective temperatures in the individual cold compartments 101-1, 101-2,..., 101-n of the refrigeration device 100 are easily and independently controllable, so that freezer compartment temperatures below -18 ° C. and temperatures above ambient temperature can be achieved simultaneously that for this purpose an electric heater is used.
  • the individual refrigeration compartments 101-1, 101-2,..., 101-n can be regulated without affecting the temperatures in the other refrigeration compartments 101-1, 101-2,..., 101-n.
  • the temperatures in the refrigeration compartments 101-1, 101-2, ..., 101-n are at a very stable level.
  • the series-connected evaporators 103-1, 103-2, ..., 103-n achieve an exact temperature control with a significantly reduced fluctuation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP14812547.9A 2013-12-18 2014-12-16 Kältegerät mit mehreren kältefächern Active EP3084323B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14812547T PL3084323T3 (pl) 2013-12-18 2014-12-16 Urządzenie chłodnicze z kilkoma przedziałami chłodniczymi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013226341.4A DE102013226341A1 (de) 2013-12-18 2013-12-18 Kältegerät mit mehreren Kältefächern
PCT/EP2014/078089 WO2015091571A1 (de) 2013-12-18 2014-12-16 Kältegerät mit mehreren kältefächern

Publications (2)

Publication Number Publication Date
EP3084323A1 EP3084323A1 (de) 2016-10-26
EP3084323B1 true EP3084323B1 (de) 2018-10-31

Family

ID=52102684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14812547.9A Active EP3084323B1 (de) 2013-12-18 2014-12-16 Kältegerät mit mehreren kältefächern

Country Status (6)

Country Link
US (1) US10088215B2 (zh)
EP (1) EP3084323B1 (zh)
CN (1) CN105829815B (zh)
DE (1) DE102013226341A1 (zh)
PL (1) PL3084323T3 (zh)
WO (1) WO2015091571A1 (zh)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016202564A1 (de) 2016-02-19 2017-08-24 BSH Hausgeräte GmbH Kältegerät mit mehreren Lagerkammern
DE102016202565A1 (de) 2016-02-19 2017-08-24 BSH Hausgeräte GmbH Kältegerät mit mehreren Lagerkammern
DE102016221615A1 (de) 2016-11-04 2018-05-09 BSH Hausgeräte GmbH Modulares Kältegerät
DE102017205426A1 (de) 2017-03-30 2018-10-04 BSH Hausgeräte GmbH Kältegerät und Betriebsverfahren dafür
DE102017205429A1 (de) 2017-03-30 2018-10-04 BSH Hausgeräte GmbH Kältegerät und Betriebsverfahren dafür
DE102017218977A1 (de) 2017-10-24 2019-04-25 BSH Hausgeräte GmbH Haushaltskältegerät mit einem Auftaufach und Verfahren zum Betreiben eines solchen Haushaltskältegerätes
DE102018206221A1 (de) 2018-04-23 2019-10-24 BSH Hausgeräte GmbH Kältegerät mit beheizbarem Innenraum
JP7347984B2 (ja) * 2019-07-26 2023-09-20 株式会社鷺宮製作所 温度式膨張弁及び冷凍サイクルシステム
DE102019216582A1 (de) * 2019-10-28 2021-04-29 BSH Hausgeräte GmbH Kältegerät mit heiz- und kühlbarem Fach
DE102019218352A1 (de) * 2019-11-27 2021-05-27 BSH Hausgeräte GmbH Kältegerät mit variabel nutzbarem Fach
US11885544B2 (en) * 2019-12-04 2024-01-30 Whirlpool Corporation Adjustable cooling system
CN112413916B (zh) * 2020-11-16 2022-01-07 中科赛凌（北京）科技有限公司 一种冷热气喷射装置
CN112413973B (zh) * 2020-11-25 2021-10-08 珠海格力电器股份有限公司 冷藏柜的控制方法及制冷系统

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2691872A (en) 1953-02-25 1954-10-19 Philco Corp Plural compartment refrigeration apparatus
US2693679A (en) 1953-03-24 1954-11-09 Philco Corp Plural compartment refrigeration apparatus
BE788218A (fr) 1972-07-25 1973-02-28 Naniwa Sangyo Co Ltd Refrigerateur de type combine
US5150583A (en) * 1989-01-03 1992-09-29 General Electric Company Apparatus for controlling a dual evaporator, dual fan refrigerator with independent temperature controls
US5103650A (en) * 1991-03-29 1992-04-14 General Electric Company Refrigeration systems with multiple evaporators
US5134859A (en) * 1991-03-29 1992-08-04 General Electric Company Excess refrigerant accumulator for multievaporator vapor compression refrigeration cycles
US5431026A (en) * 1994-03-03 1995-07-11 General Electric Company Refrigerant flow rate control based on liquid level in dual evaporator two-stage refrigeration cycles
JP2001108319A (ja) 1999-10-06 2001-04-20 Matsushita Refrig Co Ltd 冷凍装置
JP2001133112A (ja) 1999-11-10 2001-05-18 Matsushita Refrig Co Ltd 冷蔵庫
JP2001153477A (ja) * 1999-12-02 2001-06-08 Matsushita Refrig Co Ltd 冷凍装置
JP3576092B2 (ja) 2000-11-10 2004-10-13 松下冷機株式会社 冷蔵庫

Also Published As

Publication number Publication date
EP3084323A1 (de) 2016-10-26
US20160320116A1 (en) 2016-11-03
US10088215B2 (en) 2018-10-02
CN105829815A (zh) 2016-08-03
PL3084323T3 (pl) 2019-04-30
WO2015091571A1 (de) 2015-06-25
CN105829815B (zh) 2019-03-26
DE102013226341A1 (de) 2015-06-18

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