EP2881687B1 - Appareil frigorifique - Google Patents

Appareil frigorifique Download PDF

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Publication number
EP2881687B1
EP2881687B1 EP14004086.6A EP14004086A EP2881687B1 EP 2881687 B1 EP2881687 B1 EP 2881687B1 EP 14004086 A EP14004086 A EP 14004086A EP 2881687 B1 EP2881687 B1 EP 2881687B1
Authority
EP
European Patent Office
Prior art keywords
cooling device
evaporator
base part
air
cooling
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
EP14004086.6A
Other languages
German (de)
English (en)
Other versions
EP2881687A1 (fr
Inventor
Stefan Stahl
Michel Kellenberger
Jochen Ganz
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.)
V-Zug AG
Original Assignee
V-Zug AG
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 CH02014/13A external-priority patent/CH707733A1/de
Application filed by V-Zug AG filed Critical V-Zug AG
Publication of EP2881687A1 publication Critical patent/EP2881687A1/fr
Application granted granted Critical
Publication of EP2881687B1 publication Critical patent/EP2881687B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • F25D23/00—General constructional features
    • F25D23/10—Arrangements for mounting in particular locations, e.g. for built-in type, for corner type
    • 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
    • F25D2317/067—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 air ducts
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1412—Removal by evaporation using condenser heat or heat of desuperheaters
    • 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
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/002—Details for cooling refrigerating machinery
    • F25D2323/0026—Details for cooling refrigerating machinery characterised by the incoming air flow
    • F25D2323/00264—Details for cooling refrigerating machinery characterised by the incoming air flow through the front bottom part

Definitions

  • the invention relates to a refrigerator, in particular a household refrigerator for the tropical climate class T, which may also be suitable for installation in kitchen units, with a cooling unit in the base area.
  • the cooling unit in its basic components in this case has at least one compressor, a throttle element, an evaporator, and a condenser. These components circulate the coolant of the cooling unit.
  • the cooling unit in its basic components in this case has at least one compressor, a throttle element, an evaporator, and a condenser. These components circulate the coolant of the cooling unit.
  • the coolant circuit crosses with the cooling air circuit mostly at the location of the evaporator.
  • a refrigerated cabinet comprising a shaft-like depression with an evaporator and air ducts for the inlet and outlet of the cool process air to the working space.
  • a cooling unit arranged in the base, comprising a shaft-like depression with an evaporator and air ducts for the inlet and outlet of the cool process air to the working space.
  • the shaft-like depression is separated from a hot-side air duct with a condenser and a compressor.
  • an actuator opens two passages, with warm ambient air being passed through the passageway into the shaft-like cavity, bypassing the evaporator for de-icing, and returned through the passageway into the hot-side air passageway.
  • JP6446556 a tempered display case is described.
  • An arranged in the base machine box is divided into a hot and cold side area.
  • the cooling unit has at least one cooling unit, the main components of which are located in a base part, with an evaporator of the cooling unit, which is largely sealed off from the remaining volume of the base part Evaporator channel is located, which forms part of a cooling air circuit for cooling the refrigerating compartment or for cooling the refrigerating compartment and the freezer compartment.
  • the compressor As the main components of the refrigeration unit, the compressor, the throttle element, the evaporator and the condenser are considered.
  • the compressor and the condenser are mounted in the warm area.
  • the base region is defined as an area which is arranged in an operative position of the cooling device between the bottom and the useful volume of the cooling device.
  • a heat-insulating layer is located between the base area and useful volume.
  • the base region is preferably separated with respect to air flows in at least two areas with little or no mixing of air, wherein the first region is associated with a first cooling air circuit for a cooling compartment and / or freezer compartment and the second (hot) area a second cooling air circuit ( Outside air circuit) is assigned for the cooling of components of the cooling unit.
  • the refrigerator includes a controller configured to activate fans for circulating cooling air in the cooling air circuit for the refrigerating compartment and in the evaporator channel in a defrosting operation.
  • the evaporator In defrost mode, the evaporator is operated in a mode of operation with a temperature above 0 ° C.
  • the deesterification of the evaporator is effected by switching the evaporator from operation at a lower temperature to higher temperature operation (above 0 ° C) and by simply circulating the (warmer) air from the refrigeration compartment without the evaporator cooling.
  • this type of defrost operation can be done without further heating in the first cooling air circuit.
  • the heat of fusion of the condensation water can be recovered and it reduces the number of components and thus the cost of manufacturing the refrigerator.
  • the Outside dimensions of the evaporator and the capacitor are chosen so that both components are accommodated in the base part. In other words, no parts of the evaporator extend into the remaining sections of the cooling air circuit, in particular not in the vertically extending supply and exhaust air ducts.
  • a control is provided, which is designed such that in defrosting cooling air is passed through only a part of zones.
  • a zone is to be understood as meaning a subarea or an entire area of the refrigerator or freezer compartment.
  • the cooling compartment is divided by shelves in the vertical direction into several zones, between the zones a cooling air exchange is difficult.
  • the cooling air is passed in the defrosting on enteisenden evaporator, the humidity of the cooling air thereby increases.
  • the controller performs the moist cooling air through zones which best endure cooling air with high humidity, in particular by the zone (s) in which vegetables are predominantly stored.
  • the controller is designed such that orifice elements or flaps can be moved to open or close the openings for cooling air supply and / or cooling air discharge to and / or from the zones zone specific to the cooling air in and / or out of the preferred zones to lead.
  • the cooling device is designed so that a user can choose that part of zones themselves, through which the humid air to be performed in defrosting.
  • the user can be asked by software when commissioning the refrigerator, in which zone mainly vegetables will be stored.
  • the cooling device has an electrical heating element associated with the evaporator, which heats the evaporator in the defrosting operation. This accelerates the defrosting process.
  • the cooling device has a control which is designed such that in the defrosting operation, the throttle element of the cooling unit is opened further in comparison to a cooling operation. While the compressor remains activated, due to the opening of the throttle element, the pressure drop across the throttle element is reduced, whereby heat is supplied to the evaporator and the defrosting process is thereby additionally accelerated.
  • the cooling device has an exhaust air duct along at least one outer wall, which connect components to be cooled in the base part with air outlet openings in the ceiling region of the refrigerator, wherein the exhaust air duct is configured so that the exhaust air flowing through it during operation, the outer surface of at least one, preferably However, heated both sides of the refrigerator surface.
  • the exhaust air duct along the outer surfaces of the side walls is designed so that the cooling unit has air ducts and / or air outlet openings which guide the heated exhaust air from the base area to the lower part of a side wall.
  • the air thus supplied then rises in the gap between the outer surface of the refrigerator and the side walls of the installation niche, in which the cooling device is installed in operation, up to the ceiling area of the refrigerator before it is discharged to the outside.
  • the niche is formed for example by a frame of plates or by the outer walls of the right or left of the refrigerator kitchen appliances arranged.
  • the exhaust air ducts are designed such that the exhaust air flowing through them during operation heat at least 3 of the outer walls of the cooling device, in particular the two side walls and the rear wall, surface.
  • the base region has at least 2, already largely in the base region extending separately, exhaust air ducts, wherein an exhaust duct is designed so that flowing through it Exhaust air rises along the side walls, and an exhaust duct is designed so that it flows through the exhaust air rising along the rear wall.
  • the base part may have a further hot air duct, which communicates with the hot area of the base part. Air from the hot area can flow through one or more openings in the hot air duct and be routed along the walls of the refrigerator to the ceiling of the refrigerator.
  • the exhaust ducts are designed so that they are in communication with the volume of air surrounding the compressor of the refrigerator.
  • the exhaust air ducts are in communication with an air duct through which the outside air is passed in a space-saving manner after flowing through the condenser or parallel to the flow through the condenser via the compressor.
  • the evaporator of the cooling unit is located in a largely closed (evaporator) channel in the first region of the base part, whose inlet adjoins a discharge channel for the first cooling air circuit.
  • the outlet of the evaporator channel in the base part connects to the supply channel for the first cooling air circuit.
  • the evaporator channel is preferably arranged in the upper region of the base part and forms an arcuate channel between the outlet of the discharge channel and the inlet into the supply channel of the first cooling air circuit.
  • a bottom of the evaporator channel separates the Evaporator from the condenser, wherein the evaporator and condenser in the operating position of the refrigerator are particularly preferably arranged one above the other.
  • condensation or condensate during a no-frost operation of the refrigerator which is obtained in the cooling air circuit, are passed by gravity into a collecting container in the vicinity of the condenser and evaporate there.
  • a part of the outside air circuit for the cooling of components of the refrigeration unit extends beneath a floor in the base part and enters the second area of the base part through an opening in the vicinity of the condenser.
  • the base part further preferably has two outlet openings for the second cooling circuit, of which only one is open in operation depending on the operating mode.
  • the first outlet opening allows the air directed through the condenser to exit the front side of the base area and is led either directly or through further openings or panels to the outside.
  • the second outlet opening allows the air directed through the condenser to escape from the base part towards the rear.
  • An air duct which directs the outside air to the ceiling area of the cooling device, from where it is either redirected outwards towards the front side or to a ventilation device, such as, for example, connects to the second outlet opening.
  • a ventilation or chimney shaft is connected.
  • a region between the bottom plate of the base part and the bottom of the refrigerator is preferably formed as a channel, which leads from the front side to the region of the rear wall of the base part.
  • the refrigerator 10 has a utility space, which is divided by an insulating partition 11 into a freezer compartment 12 and a cooling compartment 13. Below the work space, a base part 14 with a compressor 140, condenser 141 and evaporator 142 and one or more fans (s) 143, 144 attached.
  • the compressor 140, the condenser 141 and the evaporator 142 are the components of a cooling unit for the cooling of the freezer compartment 12 as well as the refrigerating compartment 13.
  • a controller 170 controls the active components of the refrigerator.
  • a connection 171 serves to supply the refrigerator with electrical energy.
  • the controller 170 also controls a switchable throttle element 172, which connects the compressor 140 with the evaporator 142.
  • An electric heating element 142-1 associated with the evaporator 142 accelerates the defrosting of the evaporator in the defrosting operation.
  • the throttle element generates at least two different outlet pressures for the evaporator, which can thus be operated at at least two different temperatures.
  • the throttle element 172 may be a controllable valve. It is also possible to connect a plurality of parallel coolant channels, each with a differently designed throttle element (typically capillary tubes) via multi-way valves with the evaporator 142 and set the desired pressure drop and thus the temperature of the evaporator 142 by switching the multi-way valves.
  • One or more fans 143 drive air through a cooling air circuit which leads from the evaporator 142 into a vertical supply passage 15 which extends between a partition wall to the refrigerating compartment 13 and the rear wall of the refrigerator 10.
  • a plurality of slit-shaped openings 151 are mounted in the cooling compartment 13 in a vertical row along the rear wall of the refrigerator.
  • a vertical exhaust duct 16 which is connected by a series of slit-shaped openings 161 with the cooling compartment 13.
  • Both rows of openings intersect several shelves 131 within the refrigerating compartment. These can be formed as shown as a flat floor elements, but also as drawers.
  • the refrigerator compartment is divided in the vertical direction into several zones between which a cooling air exchange is difficult. Between two successive shelves 131, the cooling air flow preferably runs in the horizontal direction, ie parallel to the shelves. The zones can be used to set up different temperature zones.
  • the cooling air circuit can be used by closing or opening the respective openings 151, 161 either for cooling the freezer compartment 12 or for cooling the refrigerating compartment 13.
  • the throttle element 172 is also switched by means of the controller 170.
  • the exhaust duct 16 terminates in the base part 14 of the refrigerator.
  • the exhaust air is then passed from the fans 143 again via the evaporator 142 in the base part 14 and is then again the supply channel 15 as cooling air available.
  • FIG. 1 is also a first exhaust duct 201 shown, which extends to the rear wall of the refrigerator.
  • This channel 201 begins as described in more detail below in the warm region of the base part and passes through the opening 144-2 from the base region and then extends between the rear outer surface of the refrigerator and the adjacent wall of the installation niche, which are indicated by dashed double dashes, and which above the ceiling portion of the refrigerator has an outlet opening.
  • FIG. 2 is another exhaust duct 202 shown, which leads to the two side walls of the refrigerator to rise there in the gap of the installation niche upwards. and exit again in the ceiling area of the refrigerator.
  • the exposed to the outside air ceiling surface can thereby by the air in the first exhaust duct 201, as in FIG. 1 shown or heated by the air in the second exhaust duct 202 or by both.
  • the air flows are each represented by arrows.
  • the exhaust air channels 201, 202 are designed so that the outer sides of the walls as completely and uniformly as possible to be heated.
  • the exhaust air ducts can be made particularly wide at the outlet from the base region 14 in the lower region of the walls or divide into a plurality of smaller channels or ribs.
  • the exhaust ducts 201, 202 extend along the outside of the refrigerator.
  • the base part 14 and the components contained therein are in FIG. 3 presented in different perspectives.
  • the base part is divided into an evaporator channel 145 with the evaporator 142 and one or more fans 143 for circulating the cooling air and a warm area 146 with the compressor 140, the condenser 141 and one or more fans 144 for circulating outside air via the compressor and condenser ,
  • FIG. 3A shows a perspective view from above of the open base part 14th
  • the evaporator 142 and two fans 143 are accommodated in a substantially U-shaped or bent evaporator channel 145. At the two ends of the channel 145 close up the openings (not visible) to the supply channel 15 and the discharge channel 16 at.
  • the depth or horizontal maximum extent of the arc of the channel 145 in the direction of the front is less than 2/3 of the total depth of the base part 14.
  • the arc is strongly asymmetrical with respect to a vertical median plane of the base part 14 in the direction of depth. Thus remains in the opposite of the deepest part of the arc half of the base part 14, a front area in which the full height of the base part 14 is available for the installation of components.
  • the compressor 140 is housed, which can thus be higher than the height of the base part 14 below the evaporator channel 145th
  • the region 146 below the U-shaped evaporator channel 145 is in FIG. 3B shown.
  • This area 146 is also referred to as a warm area and comprises a bottom plate 147.
  • the condenser 141 is arranged on the bottom plate and on a Position, which is directly vertically below the volume for the evaporator 142.
  • the evaporator 142 and the condenser 141 are designed as a plate heat exchanger or as a micro-channel heat exchanger in flat design.
  • the compressor 140 is located in the region of the bottom plate 147, which is not blocked upwards by the evaporator channel 145.
  • the outside air duct 148 extends below the bottom part 147 in a substantially S-shape before approaching the rear wall and below or behind the position of the condenser 141 upwards to the hot area 146 of the base part 14 opens.
  • the outside air is passed from the front entering under the base part 14 to near the rear wall and flows after entering the warm region 146 of the base part 14, first on the capacitor 141.
  • the course of the outside air flow below the base part 14 is in FIG. 3C indicated by a dashed arrow.
  • the outside air can also be used for cooling the compressor 140.
  • an opening 144-1 to the front side or an opening 144-2 to the rear wall available.
  • the opening 144-1 to the front lies on an extension of a straight line through the condenser 141 and the compressor 140.
  • the opening 144-2 to the rear wall is adjacent to the volume occupied by the condenser 141. Both openings are configured to receive one or more fans 144.
  • a fan 144 in one of the two openings 144-1, 144-2 be determined without further substantial changes to the base part 14, whether the air outlet for the external air circuit to the front side of the base part 14 or to the back of the base part 14 and through the exhaust duct 201, as in FIG. 1 shown, takes place.
  • FIG. 4A and 4B These two modes of operation of a refrigerator 10 are each in the FIG. 4A and 4B represented, wherein the outside air circulation are indicated by arrows.
  • a fan 144 is accommodated in the front outlet opening 144-1 of the base part 14.
  • the outside air is sucked through a front opening and flows at the bottom of the bottom plate of the base part 14 along to the rear wall of the base part 14.
  • the air flow enters the base part 14 and is passed over the condenser 141 and the compressor 140 along and after blown through the front of the base part.
  • the second outlet opening 144-2 on the rear wall of the base part 14 is permanently or blocked by an easily removable closure.
  • the fan 144 is attached to the rear opening 144-2 and guided on the underside of the bottom plate of the base member 14 and in the base part 14 at the rear of the condenser 141 incoming outside air is passed over the capacitor 141 through the base part in a substantially arcuate or U-shaped flow again blown at the back of the base part 14 and led along the back of the refrigerator 10 in the exhaust duct 201 upwards.
  • the present invention allows a simple to perform, but not further supplemented by attaching an opening or conduit in the bottom of the evaporator channel 145 and a collecting tray in the region of the condenser 141.
  • Water, which is located at the bottom of the evaporator channel 145th collects, which at the same time the forms the lowest point of the cooling air circuit, can be removed quickly in this way.
  • To defrost the evaporator 142 and the evaporator channel is by means of the fan 143 and a conversion of the openings 151.161 (s. FIG. 1 -3 ) circulates the cooling air from the cooling compartment 13 through the evaporator channel and the evaporator will operate on a mode of operation with a temperature above 0 ° C.
  • a tropicalized version of the refrigerator can by attaching an additional hot air duct 149 (see FIGs. 1 . 2 . 3A ) are produced in a simple manner.
  • the hot air duct 149 is through suitable openings with the hot area 146 of the base part 14 in the air exchange. Warm outside air from this area can be distributed through the hot air duct 149 on both sides of the refrigerator 10 and is there for external insulation against humid air available. For example, as in FIG. 2 shown warm air into the channels 202 are passed and so heat the outer sides of the side walls.
  • the hot air duct 149 extends to supply the exhaust ducts 202 in the side walls of the refrigerator along the rear side of the base part 14.
  • This example allows a more compact construction of the base part 14 compared to the previous example, since the entry areas for the duct 149 (and 202) and the Overlap channel 201 or run parallel and so for example by only one fan (not shown) can be supplied with exhaust air.
  • the walls of the installation niche are shown in dashed lines. The directions of the exhaust air flows are indicated by arrows.
  • FIG. 6 Fig. 3 illustrates a mechanism by which the controller 170 can open and close the openings 151 for supplying cooling air to the zones of the refrigerating compartment separated by shelves 131 during the defrosting operation.
  • an aperture element 152 is displaced in the vertical direction, so that, depending on its position, the openings 151 are partially opened and partially closed are.
  • the diaphragm element 152 may be designed with respect to the openings 151 such that the controller 170 by the movement of the diaphragm element 152, the openings 151 are selectively kept open or closed to individual zones or multiple zones.

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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)

Claims (13)

  1. Appareil réfrigérant (10) pourvu d'un compartiment réfrigérant, en particulier un réfrigérateur encastrable, présentant au moins un groupe réfrigérant renfermant les composants principaux compresseur, élément d'étranglement, évaporateur et condensateur, dans lequel tous les composants principaux se situent dans une partie socle (14), dans lequel l'évaporateur (142) du groupe réfrigérant se situe dans un conduit d'évaporateur (145) fermé par rapport au volume résiduel de la partie socle (14), lequel conduit forme une partie d'un circuit d'air de refroidissement (15, 16) destiné à refroidir le compartiment réfrigérant (13) ou à refroidir le compartiment réfrigérant et un compartiment de congélation (12), et pourvu d'une commande (170), caractérisé en ce que la commande (170) est configurée pour; en mode dégivrage, activer un ou plusieurs ventilateurs (143) destinés à faire circuler de l'air de refroidissement dans le circuit d'air de refroidissement (15, 16) pour le compartiment réfrigérant (13) et dans le conduit d'évaporateur (145) et pour faire fonctionner l'évaporateur (142), dans un mode de fonctionnement, à une température supérieure à 0°C, dans lequel la commande (170) est configurée pour, en mode dégivrage, ouvrir davantage encore un élément d'étranglement (172) du groupe réfrigérant en comparaison d'un mode refroidissement, de telle sorte que pendant que le compresseur continue de rester activé, en raison de l'ouverture de l'élément d'étranglement, la chute de pression est réduite par l'intermédiaire de l'élément d'étranglement, ce qui a pour effet que de la chaleur est amenée à l'évaporateur et que le processus de dégivrage est de ce fait encore accéléré.
  2. Appareil réfrigérant selon la revendication 1, dans lequel la commande (170) est configurée pour, en mode dégivrage, guider l'air de refroidissement uniquement à travers une partie de zones du compartiment réfrigérant et/ou du compartiment de congélation.
  3. Appareil réfrigérant selon la revendication 2, dans lequel la commande (170) est configurée de telle sorte que la partie des zones à travers lesquelles l'air de refroidissement est guidé en mode dégivrage peut être sélectionnée par un utilisateur.
  4. Appareil réfrigérant selon l'une quelconque des revendications précédentes, dans lequel la partie socle présente au moins un conduit d'air sortant (149, 202), lequel achemine l'air des composants (140, 141) à refroidir dans la partie socle (14) en direction d'au moins une paroi latérale, en particulier des deux parois latérales, de l'appareil réfrigérant.
  5. Appareil réfrigérant (10) selon la revendication 4, dans lequel l'au moins un conduit d'air sortant (149, 202) est configuré pour chauffer l'étendue de la face extérieure de la paroi latérale ou des parois latérales de l'appareil réfrigérant en exploitant les surfaces de délimitation externes d'une niche d'encastrement de l'appareil réfrigérant.
  6. Appareil réfrigérant (10) selon la revendication 5, dans lequel l'au moins un conduit d'air sortant (149, 202) destiné à chauffer l'étendue de la face extérieure de la paroi latérale ou des parois latérales de l'appareil réfrigérant présente un ou plusieurs orifices de sortie dans la paroi latérale ou les parois latérales.
  7. Appareil réfrigérant (10) selon l'une quelconque des revendications 4 à 6, présentant en outre un ou plusieurs conduits d'air sortant (144-2, 201), lesquels acheminent l'air des composants (140, 141) à refroidir dans la partie socle (14) en direction de la paroi arrière de l'appareil réfrigérant.
  8. Appareil réfrigérant (10) selon la revendication 7, dans lequel le ou les différents conduits d'air sortant (144-2, 201) sont configurés pour chauffer l'étendue de la face extérieure de la paroi arrière de l'appareil réfrigérant en exploitant les surfaces de délimitation externes d'une niche d'encastrement de l'appareil réfrigérant, et/ou
    dans lequel le ou les conduits d'air sortant (144-2, 201), pour chauffer l'étendue de la face extérieure de la paroi arrière de l'appareil réfrigérant, présentent un ou plusieurs orifices de sortie (144-2).
  9. Appareil réfrigérant (10) selon l'une quelconque des revendications 4 à 8, caractérisé par une partie socle (14), laquelle, compte-tenu des écoulements d'air dans au moins une zone froide (145) et une zone chaude (146), avec un brassage mutuel faible ou inexistant, est séparée de l'air, dans lequel la zone chaude (146) est reliée au conduit d'air sortant (149) dans la partie socle (14), lequel amène l'air chaud provenant de la zone chaude (146) aux parois latérales de l'appareil réfrigérant (10).
  10. Appareil réfrigérant (10) selon l'une quelconque des revendications précédentes, dans lequel le conduit d'évaporateur (145) est agencé dans une zone supérieure, lors du fonctionnement, de la partie socle (14) et relie un conduit d'évacuation (16) sensiblement vertical à un conduit d'amenée (15), sensiblement parallèle à celui-ci, du circuit d'air de refroidissement.
  11. Appareil réfrigérant (10) selon la revendication 9, dans lequel l'évaporateur (142) dans le conduit d'évaporateur (145) est agencé sensiblement dans le sens vertical au-dessus d'un condensateur (141) du groupe réfrigérant, lequel condensateur est agencé dans la zone chaude (146) de la partie socle (14).
  12. Appareil réfrigérant (10) selon la revendication 11, dans lequel la hauteur totale de l'évaporateur (142) dans le conduit d'évaporateur (145) et du condensateur (141), une fois ceux-ci montés, est inférieure à la hauteur de la partie socle (14), de sorte que l'évaporateur (142) et le condensateur (141) se situent entièrement à l'intérieur du volume de la partie socle (14).
  13. Appareil réfrigérant (10) selon l'une quelconque des revendications 9, 11 ou 12, dans lequel la zone chaude (146) présente à proximité du condensateur (141) un orifice d'entrée pour un flux d'air extérieur guidé le long de la face inférieure (148) de la partie socle (14) et pénétrant dans la zone chaude (146) par la face inférieure.
EP14004086.6A 2013-12-05 2014-12-03 Appareil frigorifique Active EP2881687B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH02014/13A CH707733A1 (de) 2013-12-05 2013-12-05 Kühlgerät mit Kühlaggregat im Sockel.
CH01223/14A CH708943A1 (de) 2013-12-05 2014-08-14 Kühlgerät mit Kondensationsschutz.

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EP2881687A1 EP2881687A1 (fr) 2015-06-10
EP2881687B1 true EP2881687B1 (fr) 2019-07-31

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US11624543B2 (en) * 2019-08-26 2023-04-11 Lg Electronics Inc. Under counter type refrigerator

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JPH0641827B2 (ja) * 1987-08-17 1994-06-01 三洋電機株式会社 卓上型冷蔵ショ−ケ−スの据付構造
JPH0727472A (ja) * 1993-07-13 1995-01-27 Matsushita Refrig Co Ltd 冷蔵庫
JP2845772B2 (ja) * 1995-04-17 1999-01-13 松下冷機株式会社 冷蔵庫
JP2000227271A (ja) * 1999-02-02 2000-08-15 Hoshizaki Electric Co Ltd 冷蔵庫
KR20010098289A (ko) * 2000-04-29 2001-11-08 구자홍 냉장고용 기계실의 냉각 공기 유동장치
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US20080134699A1 (en) * 2006-11-08 2008-06-12 Imi Cornelius Inc. Refrigeration systems having prescriptive refrigerant flow control

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EP2881687A1 (fr) 2015-06-10

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