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
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
• • 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
  • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
  • F25D2400/16—Convertible refrigerators
• • 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
  • F25D2500/00—Problems to be solved
  • F25D2500/02—Geometry problems

Definitions

• the object of the invention is to provide such a flexible refrigeration device.
• the invention is based on a refrigerator with at least two storage compartments which are thermally insulated from one another and from the surroundings, in which each storage compartment is assigned an evaporator which can be acted upon with refrigerant independently of an evaporator of the at least one other storage compartment.
• a refrigerator is described for example in DE 197 56 860 AI.
• the refrigerant flow can be switched between two ways, a first way in which all three evaporators flow through the refrigerant in succession and a second way in which the way of the refrigerant the most upstream evaporator is shortened.
• means for switching from a freezer to at least one non-freezer mode are provided for at least one of its compartments.
• a refrigerator either as a combination device or as a cooling device only or alternatively as a combination device and as a freezer only.
• a reduction in the budget can of course also be taken into account. In this way, the user can be sure that the device will be able to meet its needs throughout its service life.
• the means for switching between freezing and non-freezing mode are provided for at least two compartments of the refrigerator, so that on one and the same device, depending on the choice of the user, both operation as a pure refrigerator, as a fridge-freezer and as a pure Freezer is possible.
• the means for switching can also be used to set a 0 ° operating mode of one or the other subject. Since the insulation and evaporator of a compartment are designed to allow operation of the compartment as both a freezer and a refrigerator compartment, the additional operating mode can be implemented as a 0 ° compartment with negligible additional costs.
• At least one of the compartments of the refrigerator preferably has a wire tube evaporator.
• the second compartment should also be operable as a freezer compartment, this is also preferably equipped with a wire tube evaporator; if no freezer mode is provided for the second compartment, a side wall evaporator, for example in a roll bond or tube-plate construction, is sufficient.
• Both compartments can also be equipped with a lamella evaporator and so that the device can be operated as a no frost device.
• first and second compartments are insulated to the same extent. This is particularly useful if it is entirely up to the user to choose whether the first or second compartment or possibly both or neither should be used as a freezer compartment.
• first and second compartments have different volumes, but can be operated in the same plurality of operating states. This results in two different possibilities for use as combination devices, one with the larger and one with the smaller compartment as a freezer compartment, each in accordance with the needs of the user.
• one of the compartments is insulated thinner than the other, in which case only the thicker insulated of the two compartments can expediently be switched over to the freezer mode.
• a compressor can be accommodated in a manner known per se in a recess recessed from one of the compartments, or it can be accommodated in a base set apart from the two compartments. In the latter case in particular, it is expedient if the two compartments are formed in a body which can be connected to the base either in a first orientation or in a second orientation rotated by 180 ° against the first orientation. Thus, a given compartment of the housing can be placed at the top or bottom of the fully assembled refrigerator, depending on the needs of the user.
• FIG. 1 to 5 each show a schematic section through a refrigerator according to a first to fifth embodiment of the invention.
• FIG. 6 shows a section through the refrigerator of the fifth embodiment in another design.
• a heat-insulating body 1 essentially consists of a heat-insulating body 1, in which two compartments 2, 3, which are separated from one another and thermally insulated by a partition 4, are formed. Each subject is through one Door 5 or 6 closed, which is hinged to a front of the body 1.
• the thickness of the insulating layer 7 of the body is lower in the upper compartment 2 than in the lower compartment 3, and accordingly the wall thickness of the upper door 5 is less than that of the lower.
• the upper compartment 2 is only for operation above freezing z. B. provided as a cooling compartment or as a cellar compartment; For its cooling, a so-called cold wall evaporator 8 is used in rollbond or tube-plate construction, which is embedded on the rear wall of the compartment 2 between a plastic inner container delimiting the compartment and the insulating layer 7.
• two wire tube evaporators 9 which are formed in a conventional manner from a meandering in one plane and stiffened by cross braces made of wire through which refrigerant flows.
• the two wire tube evaporators 9 are connected to one another in series.
• a compressor, not shown, of the refrigeration device is accommodated in a base 10 to form a base unit, on which the body 1 rests.
• a suction connection is made in the base 10 to the compressor, to which outputs of the plate evaporator 8 and the downstream wire tube evaporator 9 are connected, with the two evaporators 8 and 9 being connected in parallel.
• the compressor has a pressure connection, via which refrigerant drawn in and compressed from the evaporators 8, 9 reaches a condenser 11.
• the Ver. liquid 11 is shown here as a plate-shaped component on the back of the body 1, but it can also be accommodated together with the compressor in the base assembly 10.
• a solenoid valve 12 is connected, which, like the compressor, is subject to the control of a (not shown) temperature control circuit which, for. B. on the basis of air temperatures measured in each of the compartments 2, 3 determines a cooling requirement of the compartments 2, 3 and, depending on this requirement, switches the compressor on and off or, with the aid of the solenoid valve 12, the refrigerant flow in each case via a throttle 13 to that of Compartments 2, 3 steer in which cooling requirement has been determined.
• a temperature control circuit which, for. B. on the basis of air temperatures measured in each of the compartments 2, 3 determines a cooling requirement of the compartments 2, 3 and, depending on this requirement, switches the compressor on and off or, with the aid of the solenoid valve 12, the refrigerant flow in each case via a throttle 13 to that of Compartments 2, 3 steer in which cooling requirement has been determined.
• the controllers have a continuous setting range for the target temperature which, in the case of the weakly insulated compartment 2, ranges from a lower limit in the vicinity of 0 ° C. to an upper limit of approximately + 12 ° C. and in the case of the more isolated lower compartment, for example, from -18 ° C to + 12 ° C.
• a user can use the upper compartment 2, for example as a 0 ° compartment, as a normal refrigerator compartment with a typical target temperature of approx. + 7 ° C or as a cellar compartment with a typical temperature of +10 to 12 ° C, while the lower compartment 3 can also be operated as a freezer compartment.
• This modification allows the target temperature to be set more precisely in the preselected interval with the aid of the controllers 14, 15 than is possible in the variant described first without a selector switch.
• the small width of the setting interval of the controllers 14, 15 precludes the user from inadvertently changing a compartment into an incorrect operating mode due to inadvertent adjustment of these controllers, for example from freezing to 0 ° or normal cooling operation, or from normal cooling to Freezer operation, which could damage the technical content in both cases.
• the controllers 14, 15 or, if present, the selector switches 16, 17 can also be arranged on a control panel on the outside of the device, e.g. on a panel attached above the doors or between doors 5, 6. To prevent the selector switches from being operated unintentionally, they can e.g. be covered by a flap while the controls 14, 15 are exposed on the control panel.
• FIG. 2 shows a section through a second embodiment of the refrigeration device according to the invention. This differs from the first embodiment in that the thickness of the insulating layer 7 surrounding the compartments and thus the thermal insulation capacity of the compartment walls is the same in both compartments 2, 3, and in that both compartments 2, 3 are connected in series within a compartment Wire tube evaporator 9 are cooled.
• the wire tube evaporators 9 simultaneously form shelves that divide the compartments 2, 3.
• both compartments 2, 3 are equally suitable for operation as a freezer compartment.
• the refrigerator can therefore be used as a pure freezer or as a fridge and freezer combination, namely as a so-called pot freezer or as a bottom freezer, as the user chooses.
• the two compartments 2 and 3 have different useful contents, the user even has the option of closing between two different volumes of the freezer compartment choose.
• the manufacturer can cover a wide spectrum of user needs with a device model, so that the device can be manufactured in large quantities and accordingly can be offered inexpensively.
• FIG. 3 shows, as a third embodiment of the invention, a refrigeration device with rear wall evaporators provided in both compartments 2 and 3.
• Each of the two compartments 2, 3 is assigned a plate-shaped evaporator 18, 19, which is accommodated in a chamber 25 separated from the associated compartment 2 or 3 by a partition 24. Openings 20 of the partition wall 24 enable the air exchange between chamber 25 and compartment 2 or 3, if necessary in conjunction with a forced circulation.
• Fig. 3 shows the upper compartment 2 equipped with shelves 21 for use as a normal refrigerator compartment and the lower compartment 3 equipped with pull-out boxes 22 for use as a basement compartment or as a freezing compartment.
• shelves and pull-out boxes can be installed in each of the compartments, so that if the compartment 2 is intended to be used as a basement or freezer compartment, the pull-out boxes 22 could also be used there and the shelves 21 could be moved into the lower compartment 3 in order to e.g. to use as a refrigerator.
• a user who has purchased the device with the interior shown in the figure can, for example, buy a pull-out box 22 if he wants to use the upper compartment 2 permanently as a cellar compartment and the lower compartment as a cooling compartment, or he can use the device exclusively Acquire three additional pull-out boxes as a "cellar compartment and zero degree compartment device" in order to fully populate the upper compartment 2.
• FIG. 4 shows a refrigeration device in a no-frost design, with lamella evaporators 26, 27 which are forced-ventilated by an unillustrated fan and which are housed in chambers 25 designed as an evaporator chamber, which are located in a evaporator chamber outside the Compartments 2, 3 thermally separated from these and z.
• both compartments 2 and 3 can be operated as a cooling compartment, a cellar compartment, a freezing compartment or a freezer compartment, depending on the setting. Depending on requirements, any combination of operating modes is possible.
• the compartments 2, 3 are subdivided as in FIG. 2 by wire tube evaporators 9, but in contrast to the configuration of FIG. 2 in each compartment 2, 3 one of these wire tube evaporators is designated by 9 , is provided in the immediate vicinity of the ceiling of the compartment.
• the wire tube evaporators are not only supported on the inner container of each compartment, but also framed at the top and bottom. This makes it possible, as shown in FIG. 6, to mount the same body 1 on the base 10 in a configuration turned through 180 °, with the larger compartment 2 downward.
• the wire tube evaporators can be loaded with refrigerated goods in both orientations. For example, a user who prefers a bottom freezer configuration may choose the arrangement shown in FIG.
• Brackets 23, on which rails for the pull-out boxes 22 can be fastened, are arranged on the side walls of the inner containers of the compartments 2, 3 each exactly halfway between two evaporators 9, so that the rails are suspended from them regardless of the orientation of the body 1 can.
• the compressor of the refrigeration device can, of course, also be accommodated in a recess recessed from one of the compartments and open towards the rear of the device. Since such a housing design is widespread, it is not shown in a separate figure. Even with such a device, the possibility can be provided of the body as in the embodiment of Figs. 4 and 5 upside down, in which case, of course, a compression niche originally provided in a lower rear corner of the body comes to rest on the top of the housing.

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• 2004
  • 2004-03-26 DE DE102004014926A patent/DE102004014926A1/de not_active Withdrawn
• 2005
  • 2005-03-23 RU RU2006132455/12A patent/RU2371645C2/ru not_active IP Right Cessation
  • 2005-03-23 WO PCT/EP2005/051352 patent/WO2005093338A2/de active Application Filing
  • 2005-03-23 CN CN200580009539A patent/CN100595501C/zh not_active Expired - Fee Related
  • 2005-03-23 US US10/593,844 patent/US8266923B2/en not_active Expired - Fee Related
  • 2005-03-23 EP EP05717138A patent/EP1733175A2/de not_active Withdrawn

Non-Patent Citations (2)

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