EP2660543A2 - Appareil de réfrigération et/ou de congélation - Google Patents

Appareil de réfrigération et/ou de congélation Download PDF

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Publication number
EP2660543A2
EP2660543A2 EP13002314.6A EP13002314A EP2660543A2 EP 2660543 A2 EP2660543 A2 EP 2660543A2 EP 13002314 A EP13002314 A EP 13002314A EP 2660543 A2 EP2660543 A2 EP 2660543A2
Authority
EP
European Patent Office
Prior art keywords
unit
opening
drive unit
door
cylinder
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Withdrawn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
EP13002314.6A
Other languages
German (de)
English (en)
Other versions
EP2660543A3 (fr
Inventor
Dietmar Blersch
Volker Friedmann
Oliver Weidelener
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
Application filed by Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2660543A2 publication Critical patent/EP2660543A2/fr
Publication of EP2660543A3 publication Critical patent/EP2660543A3/fr
Withdrawn legal-status Critical Current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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
    • E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one cooled interior and at least one closure element, in particular with at least one door, by means of which the cooled interior is closable, wherein the device at least one drive unit and at least one drivable by the drive unit opening unit has, by means of which the closure element can be opened.
  • a refrigerator and / or freezer known that has a furniture front and a door that is located behind the furniture front.
  • an opening unit for example in the form of an electric motor is put into operation and then opened the door.
  • the present invention has the object, a cooling or freezing device of the type mentioned in such a way that with this in a relatively simple manner a needs-based adjustment of the opening force to open the closure element is adjustable.
  • the drive unit and the opening unit communicate with one another by means of at least one fluid medium which is connected to the drive unit such that a pressure force can be applied to the fluid medium by the drive unit and is thus connected to the opening unit in that a mechanical movement of the opening unit can be generated by means of the fluid medium.
  • the fluid medium is a hydraulic medium, i. H. preferably a hydraulic fluid or a gas.
  • the drive unit may comprise at least one primary cylinder unit, and the opening unit may comprise at least one secondary cylinder unit communicating with each other through said fluid medium.
  • the secondary cylinder unit has the task of opening the closure element, in particular the door, and the primary cylinder unit has the task of preferably introducing the required energy into the secondary cylinder unit via at least one hose or the like.
  • the present invention is thus based in a preferred embodiment, a hydraulic power transmission with translation by a corresponding diameter-stroke ratio between the primary and secondary cylinders.
  • this primary cylinder unit and the secondary cylinder unit which preferably each have a cylinder and a piston arranged movably therein, it is possible to design the system as a whole in such a way that a relatively large force is generated by the opening unit at the beginning of the door opening, which then continues to run the door opening or the opening of the other closure element decreases. This is advantageous because relatively large forces have to be overcome, especially at small door opening angles.
  • the present system also makes it possible to control or regulate the door opening force in a relatively simple manner. It is conceivable for the primary cylinder unit to be connected to an electromechanical drive unit which sets a piston running in the primary cylinder unit in motion. By appropriate control of the electromechanical drive unit or other drive unit, a correspondingly adapted to the requirements door opening force can thus be generated, which is forwarded via the primary cylinder unit to the secondary cylinder unit.
  • the primary cylinder unit or the drive unit driving it is designed such that the opening force changes over the opening stroke of the closure element. So it is conceivable, for example, that at the beginning of the opening process, a comparatively large force is applied, which is then reduced in the course of the further stroke. It is also conceivable to design the system in such a way that the pressure of the fluid medium is measured and that this measured value is processed in such a way that only such a large pressure force or opening force is generated as is necessary for opening the closure element.
  • the drive unit comprises not only at least one primary cylinder unit, but also at least one electromechanical unit, which may for example have an electric motor which is in a suitable manner with a piston of the primary cylinder unit in communication and on this Way creates a compression of the fluid medium.
  • the secondary cylinder unit is then actuated accordingly, so that the door is opened.
  • the drive unit may be arranged in sections or even outside the cooled area of the device. Below the cooled area is in In this case, not only the cooled interior of the device, ie to understand the useful space of the device, but also the surrounding insulation. Preferably, it is thus provided that the drive unit is arranged, for example, on the outside of the device housing such as at the rear wall.
  • the secondary cylinder unit can be arranged in the cooled area of the device, for example in the cooled working space itself or in a heat insulation which extends around the cooled working space.
  • the secondary cylinder unit has a cylinder space in which a piston is arranged back and forth, which separates the cylinder space in a plunger-side space and in a fluid-side space, wherein the fluid-side space is in communication with the primary cylinder unit and wherein in the plunger-side space of the plunger is arranged to open the closure element.
  • the plunger-side cylinder chamber is sealed by at least one seal from the outside environment.
  • the plunger-side cylinder chamber is sealed by at least one seal from the outside environment.
  • a "pneumatic spring” may be provided, through which the piston is returned with the door opening. Collisions occurring during extension can be cushioned via the air cushion in the ram-side cylinder chamber.
  • the drive unit is arranged on the back of the device and the opening unit is arranged in the region of the front side of the device.
  • the secondary cylinder unit has at least one plunger, which has a direction of movement obliquely or perpendicular to the front of the device. This plunger thus pushes the door or other closure element away from the carcass when it is driven out of the secondary cylinder unit.
  • any other positioning is conceivable, such as in the area of the side wall, in the base or in the ceiling area of the device.
  • drive unit and opening unit relative to each other is flexible, since they are readily connectable via a variably installable hydraulic hose or other conduit element.
  • the at least one closure element is executed without a handle, so that it can be incorporated easily into a handle-less designed kitchenette.
  • At least one detection means is provided, which is designed such that it detects a user input for opening the closure element and with said drive unit in such a way In connection is that then the activation of the drive unit is initiated.
  • the door or other closure element of a refrigerator and / or freezer can be opened automatically by an electromechanical door opening help.
  • an operator-initiated impulse opens the door so far that the operator can grasp the door and then open it completely.
  • the door opening aid is preferably carried out electromechanically by means of a hydraulic system.
  • the closing of the door is preferably done by the operator by hand.
  • a closing function which engages the door at least at low opening angles, to prevent them from being accidentally open.
  • a closing damper unit which assists in closing the door to the last degree before reaching the closed position.
  • a gentle closing can be achieved for example by a damper or by a plurality of dampers or by a slow retraction of the opening unit, such as the plunger in the secondary cylinder.
  • the sensor unit or another detection unit for detecting the user-side output signal for opening the door can be designed largely arbitrary.
  • a pressure pulse is detected on the appliance door or on a furniture front located in front of furniture front, a voice signal, a noise, a movement or other non-contact action of the user and the door is then opened.
  • the door is opened by the opening unit by an angle of 10 to 15 °, which may correspond to a spacing or a gap size of 10 cm.
  • the user can reach behind the door and then even easily bring in the desired opening position, on z. B. 45 °, 90 °, 135 ° etc.
  • the opening system according to the invention returns to its initial state or to its starting position. This functionality ensures that even with a false trip or malfunction in connection with a self-closing door hinge no loss of cold can occur through an accidentally open door or other closure element.
  • the door opening device according to the invention is designed so that it can be generally positioned at any position on or in the device body in the manner that an optimal door opening is possible.
  • the opening unit is located on the side facing away from the hinge side of the door.
  • the position is selected so that in a user-side door stop change the door opening device does not need to be postponed or offset.
  • FIG. 1 is denoted by the reference numeral, a refrigerator and freezer, comprising a top cooling part and a freezer arranged below.
  • the refrigerator is closed by a door 5 and the freezer compartment by a door 6, which are each movable about a vertical pivot axis.
  • Reference numeral 100 denotes a cooled portion of the apparatus, which may be the thermal insulation.
  • a power generation unit that applies the energy required to open the door 5 or 6 respectively.
  • the actual opening units for the doors 5, 6 are in FIG. 1 designated by the reference numerals 2 and 3 and are formed by piston-cylinder units, hereinafter referred to as secondary cylinders.
  • the reference numerals 8 and 10 respectively denote hydraulic hoses, which the power generating unit 4 on the one hand with the secondary cylinder 2 to open the Refrigerator door 5 and on the other hand with the secondary cylinder 3 for opening the Gefrierteilt 6 connects to the power generation unit.
  • FIG. 2 shows in a detailed representation of the central area of the device according to FIG. 1 ie the section between the refrigerator and the freezer compartment. From this view, the arrangement of the secondary cylinder is again visible, which serves to open the refrigerator door 5.
  • a stop is marked, which is fixed to the door in communication and acts on a ram of the cylinder 2, so that the door is opened.
  • the reference numeral 23 denotes an elastic damping region of this door stop 7.
  • FIG. 3 shows the lower section of the device according to FIG. 1 and illustrates that the freezer door 6 has in its lower end region via a stop 9, which cooperates with the plunger of the secondary cylinder 3, when the door is to be opened.
  • the reference numeral 100 also indicates a region of the heat insulation of the freezing part.
  • FIG. 4 shows in a longitudinal perspective view of the device according to FIG. 1 .
  • This energy generating unit 4 can be arranged for example in a recess in the region of the rear wall of the device. It is connected via hydraulic hoses 8 and 10 with the secondary cylinders 2 and 3 for opening the refrigerator part door 5 and the freezer door 6 in conjunction.
  • FIG. 5 is shown in an enlarged view of the power generation unit.
  • the power generation unit 4 consists of a primary cylinder unit 11 for the upper door, ie in this case for the cooling part door 5, from a primary cylinder unit 12 for the lower door, ie in this case for the freezer door 6 and an electromechanical drive unit 13 for the primary cylinder unit 11 of the upper door 5 and finally from an electromechanical drive unit 14 for the primary cylinder unit 12 of the lower door. 6
  • the arrangement of the power generation unit outside the refrigerator and freezer allows a particularly energy-efficient solution, since a heat generated by the power generation unit does not lead to a heating of the cooled interior of the device.
  • the energy generating unit is thus preferably outside the cold area of the refrigerator or freezer, so that no energy loss or no heat enters the cooled interior by the power generation unit.
  • FIG. 7 shows in a perspective view the representation of the secondary cylinder 3, which serves to open the Gefrierteilüre.
  • the reference numeral 100 indicates the isolated area between the inner container and the outer housing of the device. In this area can look like
  • FIG. 6 and 7 can be seen in each case the secondary cylinder to open the doors.
  • FIG. 8 shows in a perspective view a sectional view through a secondary cylinder 2.
  • the secondary cylinder 2 has a plunger or a piston rod 16, which serves for pushing or regurgitation of the appliance door.
  • the reference numeral 15 denotes a cylinder piston, which is arranged in a cylinder chamber back and forth.
  • the piston rod side cylinder chamber is in FIG. 8 with the reference numeral 18 and the piston-side cylinder chamber, ie the hydraulic region of the secondary cylinder by the reference numeral 20.
  • the cylinder piston with sealing set is identified by the reference numeral 15 and separates the two cylinder chambers 18, 20.
  • In the cylinder chamber 18 is air, ie this space represents the pneumatic range of the secondary cylinder.
  • the reference numeral 17 denotes a compression spring, which causes a return of the piston 15 and thus also the plunger 16 when no hydraulic pressure is applied via the hydraulic line.
  • the hydraulic hose is in communication with the secondary cylinder in such a way that the hydraulic fluid enters the space 20.
  • Reference numeral 19 denotes a piston rod seal of the secondary cylinder 2, which constitutes a pneumatic seal.
  • the hydraulic-pneumatic system bypasses a possible freezing of the piston rod by condensate formation in the cold installation space.
  • the seal 19 prevents air exchange between the space 18 and the outside environment and the ingress of moisture into the space 18.
  • This pneumatic spring has the property in the system that at the beginning of the opening process, i. H. at small opening angles, in which a maximum opening force is required, no or only a small counterforce is exerted on the plunger 16. Only with increasing opening stroke, d. H. with increasing movement of the piston 15, an increasing pneumatic pressure builds up in the space 18, which is due to a compression of the trapped air. Thus, a resilient counterforce is built up.
  • the hydraulic medium which originates from the energy generating unit 4 or is pressurized by it is introduced into the piston-side cylinder chamber 20.
  • the medium should not freeze and should be suitably food safe by use in the food-related area.
  • FIG. 9 shows the arrangement according to FIG. 8 with extended ram 16.
  • FIG. 10 shows in a schematic view the drive train with the power generation unit 4, and the hydraulic hose 8, which connects the power generation unit 4 with the secondary cylinder 2.
  • FIG. 11 shows the drive train on the one hand with the door closed (left view) and with the door open (right view). Like this FIG. 11 shows, the opening of the door 5 is effected by the pushing away of the stop 7 from the body, d. h by the extension of the piston rod 16 of the secondary cylinder. 2
  • FIG. 11 are on the one hand a reference numerals 11 and 13, a primary cylinder unit shown, which consists of a piston-cylinder unit 11 and on the other hand, an electromechanical drive unit, which serves to actuate the primary cylinder unit 11.
  • FIG. 12 shows the drive train to the opening of the upper door of the device in the closed state in a sectional view with primary cylinder and secondary cylinder.
  • the primary cylinder or the primary cylinder unit 11 has a cylinder chamber 22 in which a piston 21 is reciprocable.
  • the space 22 is the hydraulic medium, which is guided via the hose 8 in the piston-side cylinder chamber of the secondary cylinder 2.
  • FIG. 13 illustrates in a perspective view the structure of the entire drive train including the electromechanical drive unit.
  • This consists of an electric motor, which drives a toothed rack via a toothed wheel, which in turn is connected to the piston 21 of the primary cylinder 11 in connection and this retracts or extends depending on the actuation direction of the electric motor.
  • a pressure is built up, which is transmitted via the located in the hydraulic hose 8 medium to the secondary cylinder unit 2 and which causes the piston rod is extended.
  • FIG. 14 shows the arrangement according to FIG. 13 with extended piston rod.
  • FIG. 15 shows a sectional view through the Antriebsstrange with secondary cylinder and primary cylinder with the door open. From this figure it can be seen that in this state, the piston 21 of the primary cylinder has a lower end position in the cylinder space achieved, whereby the piston of the secondary cylinder unit according to FIG. 15 was moved to the left.
  • FIG. 16 is shown in a perspective view of the entire power generation unit with its individual components as well as the secondary cylinder unit for opening the upper door. 5
  • the primary cylinder unit 12 for the lower door and its electromechanical drive unit may be identical to that for the upper door. In the embodiment according to FIG. 16 only take up positions for the lower door are shown, but they are not occupied. That is, in this embodiment, only one door is provided, ie the receiving areas for the otherwise provided for primary cylinder unit 12 for the lower door and for the electromechanical drive unit 14 for the lower door remain free.
  • the modular system makes it possible to represent simple differentiations between one and two-door devices. Depending on the requirements, one or more power generation units are used or only the required positions are populated.
  • FIG. 17 shows in section the secondary cylinder with the door closed.
  • the piston rod in its facing the stop 7 end region on an insulating cap with a sealing lip, which serves as a piston rod attachment of the secondary cylinder.
  • FIG. 18 shows the arrangement and in particular the embodiment of the insulating cap in an enlarged view.
  • FIG. 19 shows the arrangement according to FIG. 17 with extended piston rod and FIG. 20 the corresponding detail of the tract between the insulating cap 24 and the elastic damping region of the door opening auxiliary stop. 7
  • FIG. 21 again shows a sectional view through the piston cylinder and illustrates the arrangement of the piston side cylinder space, the piston rod side cylinder space and the seal of the piston rod, which prevents relatively warm and possibly moist ambient air enters the piston rod space.
  • a hydraulic power transmission is optionally achieved with translation by a corresponding diameter-stroke ratio between the primary and secondary cylinders.
  • This system can be designed in such a way that the greatest possible door opening force is applied at the beginning of the door opening process, ie at small opening angles. This is advantageous because at small door opening angles, the applied forces due to the magnetic force of the seal, the closing force of the door closing damper, the locking force of door hinges and the cold-related vacuum forces is greatest.
  • a needs-based controllable door opening force can be achieved.
  • the door opening force, which is generated by the secondary cylinder unit is then adjusted as needed via the hydraulic power transmission ratio.
  • the Opening force is changed over the opening stroke. It is conceivable, for example, to adjust the opening force so that it is comparatively large at the beginning of the stroke and then decreases in the course of the stroke.
  • a pressure-controlled door opening force wherein this force is set automatically depending on the increasing door counterforce or force to open the door.
  • the prevailing pressure can be detected in the hydraulic medium and control technology can be processed such that only as much force is applied as is required to open the door.
  • the piston rod-side cylinder space is preferably closed on the secondary cylinder in such a way that the ingress of ambient air is prevented.
  • the entire system circumvents a possible freezing of a mechanical plunger or the piston rod by condensate formation in the cold installation space 100.
  • a pneumatic spring functionality is achieved after the door has been opened.
  • the pneumatic suspension has the property that it at the beginning of the opening process, thus at small opening angles in which the maximum opening force is required, exerts little or no counterforce, since in this case there is still a relatively small compression of the air cushion. Only over increasing opening stroke builds up a pneumatic pressure, due to the compression of the trapped air and thus a springy restoring force.
  • the above-mentioned arrangement results in a thermally energy-efficient design, which results from the sealed and separate space of the secondary cylinder. As stated, this is preferably designed such that no air exchange between the cold installation area of the secondary cylinder and the warm ambient climate. Depending on the installation space, the secondary cylinder may be exposed to temperatures of up to - 30 ° C.
  • the heat-emitting power generation source can be placed outside the refrigerated or refrigerated unit of the refrigerator or freezer, such as on the outer housing and preferably on the rear wall.
  • a plurality of secondary cylinders can also be arranged at any point of the door-facing area per door, so that optimum support in the door opening is achieved, depending on requirements.

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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)
  • Refrigerator Housings (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP13002314.6A 2012-05-04 2013-04-30 Appareil de réfrigération et/ou de congélation Withdrawn EP2660543A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012008981 2012-05-04
DE201210012166 DE102012012166A1 (de) 2012-05-04 2012-06-19 Kühl- und/oder Gefriergerät

Publications (2)

Publication Number Publication Date
EP2660543A2 true EP2660543A2 (fr) 2013-11-06
EP2660543A3 EP2660543A3 (fr) 2017-05-24

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ID=48288740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13002314.6A Withdrawn EP2660543A3 (fr) 2012-05-04 2013-04-30 Appareil de réfrigération et/ou de congélation

Country Status (2)

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EP (1) EP2660543A3 (fr)
DE (1) DE102012012166A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015185604A1 (fr) * 2014-06-05 2015-12-10 BSH Hausgeräte GmbH Appareil frigorifique à usage ménager
CN106014062A (zh) * 2016-05-27 2016-10-12 合肥华凌股份有限公司 开门装置和冰箱
DE102021131149A1 (de) 2021-11-26 2023-06-01 Brose Schließsysteme GmbH & Co. Kommanditgesellschaft Aufstellen einer Kraftfahrzeugtür

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020626A1 (de) 2010-05-14 2011-11-17 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51131762U (fr) * 1975-04-16 1976-10-23
DE29621527U1 (de) * 1996-12-12 1998-04-09 AEG Hausgeräte GmbH, 90429 Nürnberg Kühl- und/oder Gefriergerät
JP2002295968A (ja) * 2001-03-29 2002-10-09 Sanyo Electric Co Ltd 冷蔵庫

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020626A1 (de) 2010-05-14 2011-11-17 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015185604A1 (fr) * 2014-06-05 2015-12-10 BSH Hausgeräte GmbH Appareil frigorifique à usage ménager
US10190815B2 (en) 2014-06-05 2019-01-29 Bsh Hausgeraete Gmbh Domestic refrigeration appliance
CN106014062A (zh) * 2016-05-27 2016-10-12 合肥华凌股份有限公司 开门装置和冰箱
DE102021131149A1 (de) 2021-11-26 2023-06-01 Brose Schließsysteme GmbH & Co. Kommanditgesellschaft Aufstellen einer Kraftfahrzeugtür

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Publication number Publication date
DE102012012166A1 (de) 2013-11-07
EP2660543A3 (fr) 2017-05-24

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