EP3447410B1 - Appareil de réfrigération et/ou de refroidissement doté d'un ventilateur - Google Patents

Appareil de réfrigération et/ou de refroidissement doté d'un ventilateur Download PDF

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Publication number
EP3447410B1
EP3447410B1 EP18190003.6A EP18190003A EP3447410B1 EP 3447410 B1 EP3447410 B1 EP 3447410B1 EP 18190003 A EP18190003 A EP 18190003A EP 3447410 B1 EP3447410 B1 EP 3447410B1
Authority
EP
European Patent Office
Prior art keywords
fan
unit
evaporator
speed
temperature
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
EP18190003.6A
Other languages
German (de)
English (en)
Other versions
EP3447410A2 (fr
EP3447410A3 (fr
Inventor
Volker Friedmann
Michael Schick
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen GmbH
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
Priority claimed from DE102017127471.5A external-priority patent/DE102017127471A1/de
Application filed by Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP3447410A2 publication Critical patent/EP3447410A2/fr
Publication of EP3447410A3 publication Critical patent/EP3447410A3/fr
Application granted granted Critical
Publication of EP3447410B1 publication Critical patent/EP3447410B1/fr
Active 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

Definitions

  • the invention relates to a refrigerator and / or freezer with a refrigerant circuit, comprising at least one evaporator and at least one condenser, and with at least one fan for targeted ventilation of a device area or a device component.
  • Fans are installed in modern refrigerators and / or freezers, for example to improve the heat transfer in condensers or evaporators in the coolant circuit.
  • the energy consumption of the installed fans must of course not exceed the energy savings achieved through the optimized heat transfer.
  • the fan size and the constant fan speed used are therefore determined in advance based on this requirement.
  • the present application therefore aims to improve a generic refrigerator and / or freezer with regard to its achievable energy efficiency.
  • a generic refrigerator and / or freezer to equip it with at least one control module that enables speed and / or operating voltage control of the at least one fan.
  • the control module includes an implemented control loop with the operating voltage / speed of the fan as the controlled variable.
  • the influencing variable has a direct influence on the setpoint of the control loop, i.e. the setpoint speed or setpoint voltage of the fan is determined as a function of the influencing variable. Regardless of this, the influencing variable has an influence on the actual set speed at which the fan is ultimately operated.
  • One or more influencing variables preferably describe current operating conditions of the refrigerant circuit.
  • the design according to the invention enables more energy-efficient operation.
  • the implemented control ensures that the fan is always operated at the optimal speed depending on the current operating conditions of the refrigerant circuit.
  • the overall device is therefore optimally efficient at every point in time or for every environmental condition.
  • control module according to the invention clearly differs from a simple on / off control of a fan within a conventional one Differentiating between refrigerator and / or freezer. Thanks to the implemented control loop, the fan can be run at different speeds within a speed range.
  • the control module can take into account a single or multiple influencing variables in parallel. It is also conceivable that the control module can take into account a large number of influencing variables for the control, but only selects one or more influencing variables from the available large number depending on the situation and actually takes them into account for the control.
  • One or more regulated fans can be provided, for example, in the area of the heat exchanger, i.e. ideally one fan is located in the area of the evaporator and another fan is located in the area of the condenser.
  • the heat transfer is promoted by ventilating the components mentioned.
  • a regulated fan can be arranged in the cooling space of the refrigerator and / or freezer in order to ensure better air circulation and temperature distribution there.
  • the fans can be operated more energy-efficiently by always setting them to the optimum speed depending on the situation.
  • This also increases the freedom of design when designing the refrigeration circuit, because the optimized heat transfer allows flow rates or fill quantities to be set with greater leeway. For example, at a room temperature of 16 ° C, the speed of the pedestal fan, which is used to ventilate the condenser, must be reduced in order not to cool it down too much. Otherwise refrigerant would collect there and the pressure difference to the evaporator could drop, so that the mass flow also drops too much.
  • the control module takes into account the current evaporator temperature and / or a deviation between the setpoint and actual temperature of the evaporator as an influencing variable.
  • the current condenser temperature can also be used as a further influencing factor and / or a deviation between the actual and setpoint temperature of the condenser can be taken into account. In the end, this allows the evaporator and
  • influencing variables from a large number of available influencing variables and to take them into account for the control.
  • the selection can be made automatically by the control module, for example that influencing variable is always taken into account for the control which has the greatest effects on the area to be ventilated by the controlled fan or the component to be ventilated.
  • the regulation the voltage or speed can, however, also take place during runtime as a function of several or all of the available influencing variables.
  • a logarithmic and / or a polynomial-based function and / or exponential function is used as the transfer function.
  • a refrigerator and / or freezer is described with a corresponding coolant circuit.
  • the device is also equipped with a fan in the area of the evaporator and a separate fan in the area of the condenser. Both fans are regulated to a desired speed by a special control module of the device control in order to promote the heat transfer to the ventilated components.
  • the target speed is set variably depending on the current operating conditions of the refrigerant circuit in order to ensure that the fan is operated at an optimal speed for every situation and environmental condition. It is important to ensure that the energy balance between the drive energy required for the fan and the energy generated by ventilation is optimal.
  • the control is intended to ensure that the fan does not have a negative impact on the efficiency of other components of the coolant circuit.
  • the refrigerator and / or freezer is additionally equipped with a fan arranged inside the cooling space, which ensures better air circulation and temperature distribution within the cooling space.
  • the speed control of this fan takes into account the compressor speed as well as the current thermostat setting for regulating the interior temperature as influencing variables.
  • the measured internal temperature as well as its deviation from the set target temperature can also be taken into account.

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)

Claims (6)

  1. Appareil de réfrigération et/ou de congélation comprenant
    un circuit de fluide frigorigène, comprenant un évaporateur et un condenseur, ainsi que
    un ventilateur dans la zone de l'évaporateur pour la ventilation ciblée d'une zone d'appareil ou d'un composant d'appareil, dans lequel
    un module de régulation est prévu pour la régulation de la vitesse de rotation et/ou de la tension de fonctionnement du ventilateur en fonction d'au moins une grandeur d'influence, et
    le module de régulation prend en compte, comme grandeur d'influence, la température actuelle de l'évaporateur et/ou un écart entre la température réelle de l'évaporateur et la température de consigne de l'évaporateur,
    caractérisé en ce que
    la fonction de transfert utilisée du module de régulation est une fonction logarithmique ou polynomiale ou exponentielle.
  2. Appareil de réfrigération et/ou de congélation selon la revendication 1, caractérisé en ce que le module de régulation prend en compte, comme autre grandeur d'influence, la température actuelle du condenseur et/ou un écart entre la température réelle du condenseur et la température de consigne du condenseur.
  3. Appareil de réfrigération et/ou de congélation selon l'une des revendications précédentes, caractérisé en ce que le module de régulation prend en compte, pour la régulation de la tension ou de la vitesse de rotation du ventilateur pendant la durée de fonctionnement, la grandeur d'influence ayant la plus grande répercussion sur l'état de fonctionnement du composant ventilé par le ventilateur régulé.
  4. Appareil de réfrigération et/ou de congélation selon l'une des revendications précédentes 1 à 2, caractérisé en ce que le module de régulation prend en compte plusieurs grandeurs d'influence pour la régulation de la tension/de la vitesse de rotation du ventilateur pendant la durée de fonctionnement.
  5. Appareil de réfrigération et/ou de congélation selon l'une des revendications précédentes, caractérisé en ce que le ventilateur régulé est disposé dans ou sur l'évaporateur pour la ventilation de celui-ci.
  6. Appareil de réfrigération et/ou de congélation selon l'une des revendications précédentes, caractérisé en ce qu'un autre ventilateur est disposé dans ou sur le condenseur pour la ventilation de celui-ci et/ou dans l'espace de réfrigération pour la ventilation de celui-ci.
EP18190003.6A 2017-08-21 2018-08-21 Appareil de réfrigération et/ou de refroidissement doté d'un ventilateur Active EP3447410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017119090 2017-08-21
DE102017127471.5A DE102017127471A1 (de) 2017-08-21 2017-11-21 Kühl- und/oder Gefriergerät mit Ventilator

Publications (3)

Publication Number Publication Date
EP3447410A2 EP3447410A2 (fr) 2019-02-27
EP3447410A3 EP3447410A3 (fr) 2019-04-17
EP3447410B1 true EP3447410B1 (fr) 2021-12-01

Family

ID=63350436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18190003.6A Active EP3447410B1 (fr) 2017-08-21 2018-08-21 Appareil de réfrigération et/ou de refroidissement doté d'un ventilateur

Country Status (1)

Country Link
EP (1) EP3447410B1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706152A1 (de) * 1987-02-26 1988-09-08 Sueddeutsche Kuehler Behr Verfahren zur steuerung einer kraftfahrzeugklimaanlage und kraftfahrzeugklimaanlage zur durchfuehrung des verfahrens
DE102007025727B4 (de) * 2007-06-01 2018-01-11 Audi Ag Verfahren zur Steuerung eines Lüfters sowie Klimaanlage für ein Fahrzeug
DE202008000757U1 (de) * 2007-12-28 2009-04-30 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
US20100094466A1 (en) * 2008-10-14 2010-04-15 Libert Corporation Integrated quiet and energy efficient modes of operation for air-cooled condenser
CN103502745B (zh) * 2011-02-16 2016-09-14 惠灵顿驱动科技有限公司 制冷控制器
EP2653807A1 (fr) * 2012-04-20 2013-10-23 Danfoss A/S Procédé de contrôle d'un ou plusieurs ventilateurs d'un échangeur thermique à rejet de chaleur

Also Published As

Publication number Publication date
EP3447410A2 (fr) 2019-02-27
EP3447410A3 (fr) 2019-04-17

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