EP2386812A2 - Temperatursteuerungsverfahren und Einheit für Kühlvorrichtungen - Google Patents

Temperatursteuerungsverfahren und Einheit für Kühlvorrichtungen Download PDF

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Publication number
EP2386812A2
EP2386812A2 EP11165217A EP11165217A EP2386812A2 EP 2386812 A2 EP2386812 A2 EP 2386812A2 EP 11165217 A EP11165217 A EP 11165217A EP 11165217 A EP11165217 A EP 11165217A EP 2386812 A2 EP2386812 A2 EP 2386812A2
Authority
EP
European Patent Office
Prior art keywords
temperature
cooler
compartment
damper
threshold value
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Withdrawn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
EP11165217A
Other languages
English (en)
French (fr)
Other versions
EP2386812A3 (de
Inventor
Tekin Karayilan
Oner Aktas
Fatih Muminoglu
Alperen Gazioglu
Bora Kayikci
Murat Kayikci
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP2386812A2 publication Critical patent/EP2386812A2/de
Publication of EP2386812A3 publication Critical patent/EP2386812A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0666—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the freezer
    • 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
    • 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
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments

Definitions

  • This invention relates to a method developed for adjusting the compartment temperatures by controlling the operation of cooling cycle elements in cooler devices with at least two compartments.
  • cooler devices typically compressor, condenser, capillary tube, and evaporator units are used in the cooling cycle of cooler devices.
  • Different compartments of cooler devices separated according to the aim of use are maintained at different temperatures by controlling the operation states of cooling cycle elements.
  • the temperature of compartments set up according to the aim of use is determined within given standards and accordingly, the temperature of compartments differs from each other. Additionally, the temperature of such compartments must not exceed a certain threshold value.
  • a cooler device for instance, comprising a freezer compartment and a cooler compartment
  • the freezer temperature must be kept below 0°C.
  • the cooler compartment it must be maintained around +4°C to +5°C. In cases when such temperature values are not attained, foods kept in the cooler compartments are spoiled, and since longer-lasting cooling cycles are required to achieve such temperature values, the cooler device's energy consumption is increased.
  • adjusting the temperature of compartments is achieved by controlling the operation states of the compressor, evaporator fan, and the damper at the air channel through which airflow occurs between compartments according to target temperatures.
  • a temperature sensor situated at the freezer compartment continuously measures the temperature of freezer so that if the temperature exceeds a threshold value determined according to standards, the compressor is operated and the freezer temperature is brought to the required level.
  • Another temperature sensor is provided at the cooler compartment and the temperature of this compartment is continuously measured as well. If the temperature of the normal cooler compartment exceeds threshold values determined according to standards, the damper situated at the air channel that provides airflow-communication between the compartments is opened, the fan is started, and cold air is guided from the freezer to the cooler compartment via this air channel. Thus, the temperature of the cooler compartment is reduced to the desired level.
  • the fan's operation period (revolution period) is adjusted according to the open- or closed-state of the damper. Fan is operated a certain while after the damper is opened. When the damper is switched to the closed state, the fan's revolution period is kept operating a certain time at a higher period than the revolution period when the damper is in the open state and then the fan is stopped.
  • the control of the temperature of compartment is conducted independently and in this sense, the operation states of cooling cycle elements are also controlled independently. This fact, however, increases power and energy consumption. Additionally, setting up the temperature of the cooler compartment irrespective of the temperature of the freezer compartment leads to spoilage in foods stored in the latter.
  • the present invention provides a temperature-control method for cooler devices with at least two compartments. Temperature facts of compartments are individually measured, compared to threshold values determined in line with standards, the operational states of cooling cycle elements of the cooler device are controlled, and the temperature of compartments is adjusted.
  • a cooler device adapted to operate with the method according to the present invention comprises at least one cooler compartment and at least one freezer compartment; temperature sensors situated in said compartments to measure the temperature in said compartments; a cooling setup containing an evaporator, condenser, compressor units, at least one fan, circulating air cooled down by the evaporator within the cooler device, and at least one damper that is opened and closed in an airflow channel between the compartments; and a control unit controlling the operation of the cooler device.
  • the temperature of each compartment is measured by temperature sensors situated at the compartments and the measured values are compared with determined threshold values. Comparing the temperature of the freezer compartment provides the adjustment of the operation state of the compressor and fan, whereas comparing the temperature of the cooler compartment determines the damper position and the operational state of the fan. In order to make a comparison in the normal cooler compartment, however, the compressor must be in operation. Thus, power and energy consumption is reduced.
  • the object of this invention is to adjust the temperature of a cooler device by controlling the operational states of cooling cycle elements thereof.
  • Another object of this invention is to adjust the operational states of the fan and damper according to the operational state of the compressor, thereby reducing power consumption.
  • a further object of this invention is to block airflow from the freezer compartment to the normal cooler compartment when the compressor is not operating, thereby preventing any temperature rise in the freezer compartment.
  • Cooler device (1) Evaporator (2) Fan (3) Damper (4) Compressor (5) Air channel (6) Condenser (9) Normal cooler compartment (10) Freezer compartment (11) Control unit (12) Temperature sensor (13) Temperature sensor (14) Temperature of cooler compartment (TR) Temperature of freezer compartment (TF) Threshold temperatures (TRL1, TRL2, TFL1, TFL2)
  • FIG. 1 illustrates a flow diagram of the temperature control of a normal cooler compartment according to the prior art.
  • Temperature values (TR) measured by the temperature sensor is compared to a threshold value (TRL1) determined based on standards, which is required for operating the fan and damper.
  • TRL1 threshold value
  • the damper is opened and the fan is operated.
  • the temperature of the normal cooler compartment is compared to a threshold value (TRL2) determined based on standards for closing the damper. If the temperature of the normal cooler compartment (TR) is below this threshold value (TRL2) (i.e. TR ⁇ TRL2), the damper is closed.
  • FIG. 2 illustrates a flow diagram of the temperature control of a freezer compartment according to the prior art.
  • Temperature values (TF) measured by the temperature sensor situated in the freezer compartment is compared to a threshold value (TFL1) determined based on standards, which is required for operating the compressor and fan. If the temperature of the freezer compartment (TF) is above the threshold value (TFL1), the compressor and the fan are operated.
  • the temperature of the freezer compartment (TF) is compared to a threshold value (TFL2) determined based on standards for stopping the compressor.
  • TTL2 threshold value
  • cooler devices having at least two compartments, i.e. a freezer compartment and a normal cooler compartment
  • This cooler device (1) comprises at least one freezer compartment (11), at least one cooler compartment (10), temperature sensors (13, 14) situated and measuring the temperature in said compartments (10, 11), and a cooler mechanism for the cooling cycle.
  • This cooler mechanism is known in the prior art and comprises evaporator (2), condenser (9) and compressor (5) units.
  • the cooler mechanism further comprises at least one fan (3) circulating air cooled by the evaporator (2) within the cooler device; an air channel (6) for airflow between the compartments (10, 11); and at least one damper (4), serving as a lid that opens and closes and provides airflow-communication between the compartments (10, 11) in said air channel (6) (this damper is operated by a motor not illustrated in the figure).
  • Open and closed states of the damper (4) controlling the airflow-communication of the air channel (6) between the freezer compartment (11) and the normal cooler compartment (10) is controlled in parallel to the operational state of the compressor (5) by at least one electronic control unit (12).
  • the prerequisite for opening the damper (4) is the operation of compressor (5).
  • the temperature of compartments (10, 11) in the cooler device (1) is continuously measured by temperature sensors (13, 14) separately provided in each compartment (10, 11). Threshold values are determined for each compartment (10, 11) in line with standards. Measured temperature values are compared to threshold values determined for each compartment in said control unit and the operation of elements within the cooling cycle are controlled.
  • Freezer compartment temperature (TF) measured by the sensor (14) in the freezer compartment (11) is compared with a predetermined threshold value (TFL1).
  • TTL1 a predetermined threshold value
  • the control unit (12) starts the compressor (5) to lower down the temperature of the freezer compartment (11).
  • the fan (3) is also operated to circulate air cooled down with the compressor (5) operating within the cooler device (1).
  • the compressor (5) is operating, the measured temperature (TF) of the freezer compartment (1) is compared to a threshold value (TFL2) determined based on standards for stopping the compressor (5).
  • the control unit (12) stops the compressor (5).
  • the temperature (TR) of the normal cooler compartment (10) is also compared to a threshold value (TRL1) predetermined for this compartment (10) in the control unit (12). If the temperature of the normal cooler compartment (TR) is below a determined threshold value (TRL1) required for opening the damper (4) (i.e. TR ⁇ TRL1) while the compressor (5) is working (i.e. TF>TFL1), the damper of the air channel that provides airflow-communication between the freezer compartment (11) and the normal cooler compartment (10) is not opened. Thus, air cooled down with the operating compressor (5) is only effective in the freezer compartment (11) and energy consumption is reduced.
  • the control unit (12) opens the damper (4) and the airflow-communication of the air channel (6) is opened between the freezer compartment (11) and the normal cooler compartment (10).
  • a determined threshold value (TRL1) required for opening the damper (4) i.e. TR>TRL1 while the compressor (5) is working
  • the control unit (12) opens the damper (4) and the airflow-communication of the air channel (6) is opened between the freezer compartment (11) and the normal cooler compartment (10).
  • cooled air present in the air channel (6) at the side of the freezer compartment (11) is forced by the fan (3) to flow to the channel's (6) normal cooler compartment (10) side, so that the temperature in the normal cooler compartment (TR) is reduced.
  • the temperature of the normal cooler compartment (TR) is compared with a predetermined threshold value (TRL2) for closing the damper (4). If the temperature of the normal cooler compartment (TR) is above the threshold value (TRL2) required for closing the damper (4) (i.e. TR>TRL2), the damper (4) is left open. If the temperature of the normal cooler compartment (TR) drops below the threshold value (TRL2) required for closing the damper (4) (i.e. TR ⁇ TRL2), the control unit (12) closes the damper (4) and the airflow-communication of the air channel (6) is blocked between two compartments (10, 11).
  • TRL2 threshold value
  • freezer compartment temperature (TF) measured by the sensor (14) in the freezer compartment (11) is below a determined threshold value (TFL1) (i.e. TF ⁇ TFL1), the compressor (5) and the fan (3) are not operated, and if they are already operative, they are stopped. While the compressor (5) is not running, the control unit (12) does not open the damper (4), or if it is in its open position, it brings it to its closed position. Thus, any temperature drop in the freezer compartment (11) is prevented and the amount of consumed energy is reduced.
  • TTL1 determined threshold value
  • open and closed states of the damper (4) and the operative state of the fan (3) now depend on the compressor (5) with the method developed according to the present invention. If the compressor (5) is operating, the fan (3) is operated as well and the damper (4) is opened or closed, depending on the temperature of the normal cooler compartment (10). If the compressor (5) is not operating, the fan (3) is not operated and the damper (4) is closed, irrespective of the temperature of the normal cooler compartment (10). Thus, cold airflow from the freezer compartment (11) to the normal cooler compartment (10) is controlled and energy consumption is reduced. Since, at the same time, the positions of the fan (3) and damper (4) are controlled in connection with the compressor (5), power saving is made.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
EP11165217.8A 2010-05-14 2011-05-09 Temperatursteuerungsverfahren und Einheit für Kühlvorrichtungen Withdrawn EP2386812A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201003866 2010-05-14

Publications (2)

Publication Number Publication Date
EP2386812A2 true EP2386812A2 (de) 2011-11-16
EP2386812A3 EP2386812A3 (de) 2014-04-23

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EP11165217.8A Withdrawn EP2386812A3 (de) 2010-05-14 2011-05-09 Temperatursteuerungsverfahren und Einheit für Kühlvorrichtungen

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103968633A (zh) * 2013-01-30 2014-08-06 Lg电子株式会社 冰箱及其运转方法
US9297566B2 (en) 2013-02-21 2016-03-29 General Electric Company Enthalpy based control for a refrigeration appliance
US9328956B2 (en) 2012-12-18 2016-05-03 General Electric Company Refrigerator control system and method
US9453661B2 (en) 2013-03-12 2016-09-27 Haier US Appliance Solutions, Inc Control system for a dual evaporator refrigeration system
US10151522B2 (en) 2016-01-27 2018-12-11 Haier Us Appliance Solutions, Inc. Microchannel condenser and dual evaporator refrigeration system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09264649A (ja) 1996-03-29 1997-10-07 Fujitsu General Ltd 冷蔵庫の制御方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02133771A (ja) * 1988-11-14 1990-05-22 Toshiba Corp 冷蔵庫制御装置
JPH07146053A (ja) * 1993-11-24 1995-06-06 Matsushita Electric Ind Co Ltd 冷凍冷蔵庫
DE19914261B4 (de) * 1998-03-31 2005-02-17 Lg Electronics Inc. Verfahren zum Verhindern der Entstehung von Eis auf einer Drosseleinrichtung in einem Umluft-Kühlschrank mit Gefrierraum und Kühlraum

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09264649A (ja) 1996-03-29 1997-10-07 Fujitsu General Ltd 冷蔵庫の制御方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328956B2 (en) 2012-12-18 2016-05-03 General Electric Company Refrigerator control system and method
CN103968633A (zh) * 2013-01-30 2014-08-06 Lg电子株式会社 冰箱及其运转方法
EP2762806A3 (de) * 2013-01-30 2015-04-15 LG Electronics, Inc. Kühlschrank
CN103968633B (zh) * 2013-01-30 2017-05-03 Lg电子株式会社 冰箱及其运转方法
US9297566B2 (en) 2013-02-21 2016-03-29 General Electric Company Enthalpy based control for a refrigeration appliance
US9453661B2 (en) 2013-03-12 2016-09-27 Haier US Appliance Solutions, Inc Control system for a dual evaporator refrigeration system
US10151522B2 (en) 2016-01-27 2018-12-11 Haier Us Appliance Solutions, Inc. Microchannel condenser and dual evaporator refrigeration system

Also Published As

Publication number Publication date
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