EP3290841B1 - Dispositif de réfrigérateur fonctionnant sur le secteur - Google Patents

Dispositif de réfrigérateur fonctionnant sur le secteur Download PDF

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Publication number
EP3290841B1
EP3290841B1 EP16186339.4A EP16186339A EP3290841B1 EP 3290841 B1 EP3290841 B1 EP 3290841B1 EP 16186339 A EP16186339 A EP 16186339A EP 3290841 B1 EP3290841 B1 EP 3290841B1
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EP
European Patent Office
Prior art keywords
blocking
refrigerator
locking lever
mains voltage
control unit
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
EP16186339.4A
Other languages
German (de)
English (en)
Other versions
EP3290841A1 (fr
Inventor
Simon Clarke
George Mason
Gary POOLE
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.)
Eppendorf SE
Original Assignee
Eppendorf SE
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 Eppendorf SE filed Critical Eppendorf SE
Priority to EP16186339.4A priority Critical patent/EP3290841B1/fr
Priority to DK16186339.4T priority patent/DK3290841T3/da
Priority to PCT/EP2017/070218 priority patent/WO2018041571A1/fr
Priority to JP2019532172A priority patent/JP2019532250A/ja
Priority to US16/329,264 priority patent/US20190249920A1/en
Priority to CN201780060079.9A priority patent/CN110073156B/zh
Publication of EP3290841A1 publication Critical patent/EP3290841A1/fr
Application granted granted Critical
Publication of EP3290841B1 publication Critical patent/EP3290841B1/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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0603—Controlling mechanically-operated bolts by electro-magnetically-operated detents the detent moving rectilinearly
    • 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
    • F25D11/04—Self-contained movable devices, e.g. domestic refrigerators specially adapted for storing deep-frozen articles
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/006—Safety devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0067—Monitoring
    • E05B2047/0069—Monitoring bolt position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/27—Problems to be solved characterised by the stop of the refrigeration cycle
    • 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
    • F25D2400/36—Visual displays
    • 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
    • F25D2600/00—Control issues
    • F25D2600/02—Timing

Definitions

  • the present invention relates to a mains voltage operated refrigerator device according to the preamble of the main claim.
  • a mains voltage operated refrigerator device is generally known in the field of ultra-low-temperature refrigerator devices, namely refrigerator devices with cooling operating temperatures of interior spaces ⁇ -50 ° C for refrigerated goods, and is suitable for securing against unintentional and / or unauthorized access to this interior.
  • Such generic refrigerator devices are commonly used to receive biological samples or comparable refrigerated goods, often associated with the need to control access to such refrigerated goods - which are often to be stored for weeks or months at low target temperatures - with the purpose of preventing abuse .
  • Another, practically not insignificant aspect of an access protection is the problem that at the specified low cooling temperatures each opening process leads to icing effects, which in turn make special measures necessary to remove icing or still ensure low-temperature cooling operation.
  • this approach means a weakening of the actually caused by the code entry access protection against unauthorized opening: So, for example, even in abuse intentionally, the fault condition of the power failure can be brought about, for example by pulling the power plug when operated at usual power outlets generic refrigerator devices. In the manner described above and in the assumption of the emergency mode, the blocking means then unlock the locking lever for free operation, without there being any further securing or checking of an authorized access.
  • the state of the art which is assumed to be generally known, has the noticeable disadvantage that temperature displays and other units, in particular a cooling state of refrigerated goods accommodated in the interior, are inoperable and thus, in particular, operators can not give any indications (such as) is a current cooling state or a current cooling operating temperature, so that in particular emergency measures to be initiated with the refrigerated goods are speculative and provide no guarantee that not critical cooling temperatures have already been exceeded.
  • the object of the present invention is therefore to improve a mains voltage operated refrigerator device according to the preamble of the main claim, both in terms of their operational and access protection properties in the event of a mains voltage failure, as well as operators, in such an exceptional operating condition, the opportunity to give a state of estimate refrigerated goods in the refrigerator, so that appropriate safeguards, despite the mains voltage failure, can be taken.
  • mains voltage-driven cooling device having the features of the main claim; advantageous developments of the invention are described in the subclaims. Additional protection within the scope of the invention is claimed for a preferred use of this mains-voltage-operated refrigerator device in an ultra-low-temperature cooling range, namely at a stationary cooling operating temperature of an interior of the refrigerator to be refrigerated below -50 ° C., this temperature preferably also being the steady-state operating temperature below and preferably at -80 ° C and lower.
  • the blocking means which according to the invention an electromotive or electromagnetically actuated blocking element, such as a locking pin, have associated, mains voltage independent battery buffer means. These then interact with the code input unit and the electronic control unit such that in response to a mains voltage failure, the code operation and the release of the locking lever for the refrigerator door by the blocking element over a predetermined minimum period after the occurrence of mains failure.
  • This period is advantageously set or set up so that it is at least 50 hours, advantageously at least 72 hours, so that in particular taking into account weekends or the like. Periods without presence of persons still allows access to the refrigerated goods by unlocking.
  • the present invention ensures that during this minimum period the code input unit remains in operation in cooperation with the blocking means, in other words, during this period, even by entering the correct code or by the intended proper code operation, the release of the locking lever is made possible. According to the invention thus the backup function is maintained during this emergency operation, so that, in departure from the initially discussed prior art, abuse and circumvention of the code backup are excluded by intentional mains voltage interruption.
  • control unit is associated with display means, which are provided on the refrigerator door and further preferably so that when the mains voltage failure in response to this and at least over the predetermined minimum period, a temperature display of a current refrigerator interior temperature of the refrigerator device , In particular, provided fordegutage interior, can take place.
  • display means which are provided on the refrigerator door and further preferably so that when the mains voltage failure in response to this and at least over the predetermined minimum period, a temperature display of a current refrigerator interior temperature of the refrigerator device , In particular, provided fordegutage interior, can take place.
  • the blocking means on an electromotive linearly displaceable locking pin as a blocking element which can engage, in particular by an otherwise known adhesion, to ensure the blocking in a portion of the locking lever, such as a bore formed therein.
  • the blocking functionality can be realized, which is also additionally further improved, that the electric motor driven locking pin is kept currentless stable at least in the locking enabling end or stop position.
  • an additional and preferred embodiment of the invention provides that the locking pin detector or switch means are assigned, which in particular a release, namely a retracted displacement position of the locking pin indicate.
  • a release namely a retracted displacement position of the locking pin indicate.
  • This can advantageously be done in the practical realization, for example, by the fact that in the release-causing retracted displacement position of the locking bolt, this contacts a mechanical switching contact and thus closes. Accordingly, it is possible for the connected control unit to reliably detect this opening or unlocking state and possibly to take it into account in further control and display tasks.
  • a pivot state or a pivot position of the locking lever namely in particular the opening and the locking position
  • the locking lever functionality is directly involved in the control behavior of the device.
  • the pivoting position detector means on the refrigerator door, adjacent to the closure lever and preferably interacting with it without contact, not least as on or in the refrigerator door, for example for the display means, control lines and the like .
  • the pivot position detector means in the form of magnetic field detectors or magnetically actuated switches to realize which particularly suitable and advantageous (and further advantageous non-contact) can interact with permanent magnet means, which provided and formed on the locking lever itself. In this way can be realized a non-contact, reliable detection, without about the shutter lever itself lines or other electronic units must be provided.
  • the magnetic field detector means and the magnetically operated switch means a simple and convenient signal evaluation.
  • control unit With the purpose of preventing unintentional operating conditions in the event of continuous mains voltage failure, it may be advantageous to design the control unit according to the invention such that the code actuation and / or the release during the mains voltage failure is limited, in particular only possible once.
  • the Fig. 1 illustrates a first embodiment of the mains voltage operated refrigerator device of the present invention Invention.
  • the refrigerator door 2 hinged hinged to the (not shown) enclosing the refrigerator body 4, to open (or close) by manual operation of a locking lever 22 which is pivotable about a horizontally extending pivot axis 23;
  • the representation of Fig. 1 shows in this respect the closure state in which the closure lever 22 engages (not shown) abutment means on the body 4.
  • a locking device (blocking means) 24, which forms an extendable in the direction of the lever 22 and in the blocking state in this locking engagement locking pin 26.
  • This locking pin is in turn in the interior of the housing 24 by an electric motor driven helical drive in a vertical direction of Fig. 1 operable between a retracted (open or unobstructed) position in which the locking pin 26 is disengaged from the lever 22 (and this releases so far for actuation), and a locking state in which in the manner described above, the locking pin 26 is extended and prevents its pivoting by engagement in a suitable opening or a bore in the closure lever 22.
  • control unit 14 which realized, for example by means of a microcontroller unit and provided with appropriate operating (system) software, the locking or unlocking state of the locking lever 22 by suitable control of the locking pin 26 actuated motor performs.
  • the shows Fig. 1 a display and input unit 16 associated with the control unit 14, which has a temperature display 18 for an indoor cooling temperature (depending on a sensor output of the temperature sensor T) and a keyboard 20 shown schematically, about which, for effecting the opening operation of the locking means 24 and the extent to Release the locking pin 26, first a correct code must be entered.
  • sensor means are provided in the form of a limit switch 28 and a magnetic detector 32 and associated with the control unit 14 to influence the lock or unlock operation:
  • limit switch 28 is detected whether an unlocked or opening suitable state of the locking pin 26 is present.
  • the magnetic field detector implemented by a reed switch on the refrigerator door 2, for example, and for interacting with a permanent magnet 30 fastened to the closing lever 22, it is determined whether the closing lever is in the closed position (FIG. Fig. 1 Namely, in this position, the permanent magnet 30 is opposite the reed switch 32, so that a corresponding detection by the control unit 14 can take place.
  • the embodiment is provided with an emergency functionality in the event of an (unintentional) interruption or a failure of the voltage applied to the terminal 10.
  • the functional unit 12 cooling units and associated control units for cooling the interior of the refrigerator to the intended target temperature.
  • a battery-operated buffer unit 13 which, when connected to mains voltage 10, receives this (suitably conditioned by power supply means not shown) and buffers such that an emergency operation to be described below of the control unit 14 together with the associated display and input unit 16, 18, 20 can be ensured, and over a minimum operating period of 72 hours without mains voltage signal connected: namely, in this emergency mode, the control unit 14, on the temperature sensor T acting in the refrigerator interior of the refrigerator, still a continuous cooling temperature this Determine interior, suitably digitally prepare and on the display 14 of the display and input unit 16, mounted on a front-side outer surface of the door 2, for illustration bring.
  • this representation does not have to be continuous, but it can also be done symbolically by the key row 20 of an interface (which in turn, for example, be realized by touch-sensitive functionality of the display unit 18, such as in the manner of a known touch screen can).
  • the battery buffer unit 13 provides for maintaining this functionality during this 72 hour minimum period.
  • the power supply 14 also ensures during this period (at least) once the above-described code-safe release and opening operation of the unit 24 by controlling the control unit 14: namely, even during the power failure requires the release of the locking lever by lowering the locking pin 26th by the action of the blocking means 24, a release signal by the control unit 14, which is generated only when an operator has entered a correct code by means of the keys 20.
  • the operator has convinced by reading the temperature display on the display 18 before this opening that this is actually a suitable measure to access the contents of the refrigerator, so with the intention of this content then to relocate to a still functioning refrigerator.
  • the display is additionally able to output during the minimum display period during the power failure in addition to the temperature display an operating state, in particular fault message display.
  • an operator or maintenance person can then (additionally) obtain information about the cooling device, for example about the circumstance, if the power failure (actually) is purely external, or if it is a defect the functional unit 12 is present.
  • This too is exemplary; in fact, this further-forming functionality can be used on the display, in particular, in order to provide the operator with information in the form of an emergency indicator, as is now the case (also for rectifying the malfunction).
  • the above-described emergency opening functionality allows the opening only once, so that in particular a subsequent closing is prevented, unless it is in the meantime again a proper mains voltage supply at the terminal 10 is present (and it may be Initialization or restart processes of the operating system assigned to the control unit 14 takes place).
  • the invention is not limited to the embodiment shown. Neither are the concrete - or environmental parameters required for the realization of the invention - although the present invention is particularly favorable and suitable in the context of ultra-low temperature - refrigerator devices applicable, but other applications are conceivable - still has about the locking and locking functionality necessarily happen in the described specific way, also here are also numerous other electromechanical solutions conceivable.

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Refrigerator Housings (AREA)

Claims (10)

  1. Dispositif de réfrigérateur alimenté par le secteur, notamment un dispositif de réfrigérateur ultra-basse température, comprenant
    une porte de réfrigérateur (2) comprenant un levier de fermeture (22) articulé sur celle-ci, ledit levier de fermeture étant pivotable entre un position ouverte et une position de verrouillage,
    et des moyens de blocage (24) associés au levier de fermeture et comprenant un élément de blocage (26) actionné par moteur électrique et/ou de manière électromagnétique
    qui bloque ou débloque le pivotement du levier de fermeture en fonction d'un actionnement de code qui peut être entré par un opérateur par l'intermédiaire d'une unité d'entrée de code (20),
    caractérisé en ce
    qu'une unité de commande (14) électronique et des moyens de batterie tampon (13) indépendants du secteur sont associés aux moyens de blocage et à l'unité d'entrée de code de telle manière qu'en réponse à une panne de secteur, l'actionnement de code et le déblocage sont permis pour une période minimale prédéterminée sans alimentation secteur,
    dans lequel des moyens d'affichage (18) associés à l'unité de commande et notamment disposés sur la porte de réfrigérateur sont configurés de telle manière qu'une température intérieure actuelle du réfrigérateur est affichable pendant la panne de secteur et au moins pour la période minimale prédéterminée.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    la période minimale prédéterminée est 50 heures, de préférence 70 heures.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que
    les moyens de blocage comprennent un boulon de blocage (26) déplaçable linéairement par moteur électrique comme élément de blocage qui peut s'encliqueter, notamment en liaison par force, dans une partie du levier de fermeture lors du blocage.
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
    les moyens de blocage sont configurés de telle manière que le boulon de blocage est maintenu stable sans courant dans la position finale ou position de butée permettant le blocage et, de préférence encore, les moyens de blocage sont configurés pour entraîner le boulon de blocage vers des positions finales bistables sans courant.
  5. Dispositif selon la revendication 3 ou 4,
    caractérisé en ce que
    les moyens de blocage comprennent des moyens de détecteur et/ou d'interrupteur (24) qui sont connectés à l'unité de commande et qui servent à détecter une position déplacée du boulon de blocage, notamment une position déplacée rétractée qui effectue le déblocage, lesdits moyens de détecteur et/ou d'interrupteur étant de préférence réalisés comme moyens d'interrupteur (24) mécaniques qui sont actionnables par le boulon de blocage.
  6. Dispositif selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    des moyens de détecteur (30, 32) d'une position pivotée, qui sont de préférence disposés sur la porte de réfrigérateur, sont associés au levier de fermeture et sont connectés à l'unité de commande.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que
    les moyens de détecteur d'une position pivotée comprennent des moyens de détecteur (32) de champs magnétiques et/ou des moyens d'interrupteur actionnables magnétiquement, qui sont configurés pour interagir magnétiquement avec des moyens d'aimant permanent (30) disposés sur le levier de fermeture, ou un capteur de position ou un interrupteur configuré pour l'actionnement en contact ou sans contact.
  8. Dispositif selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    l'unité de commande est configurée de telle manière que l'actionnement de code et/ou le déblocage en réponse à la panne de secteur n'est permis que pour un nombre des fois prédéterminé, notamment qu'une fois, et un fonctionnement de blocage et/ou de serrage est de préférence empêché.
  9. Dispositif selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    l'unité de commande et l'unité d'affichage sont configurées pour afficher de plus des informations sur un mauvais fonctionnement, des informations sur l'état de fonctionnement et/ou des informations d'instruction de fonctionnement pendant la période minimale.
  10. Dispositif selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce
    qu'un intérieur servant à recevoir des produits à refroidir fonctionne à une température de mode de refroidissement stationnaire de < -50 °C, de préférence < -80 °C.
EP16186339.4A 2016-08-30 2016-08-30 Dispositif de réfrigérateur fonctionnant sur le secteur Active EP3290841B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP16186339.4A EP3290841B1 (fr) 2016-08-30 2016-08-30 Dispositif de réfrigérateur fonctionnant sur le secteur
DK16186339.4T DK3290841T3 (da) 2016-08-30 2016-08-30 Netspændingsdrevet køleskabsindretning
PCT/EP2017/070218 WO2018041571A1 (fr) 2016-08-30 2017-08-09 Appareil frigorifique branché sur le secteur
JP2019532172A JP2019532250A (ja) 2016-08-30 2017-08-09 商用電源電圧駆動の冷凍庫装置
US16/329,264 US20190249920A1 (en) 2016-08-30 2017-08-09 Grid voltage-operated refrigerating device
CN201780060079.9A CN110073156B (zh) 2016-08-30 2017-08-09 以电力网电压运行的冰箱装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16186339.4A EP3290841B1 (fr) 2016-08-30 2016-08-30 Dispositif de réfrigérateur fonctionnant sur le secteur

Publications (2)

Publication Number Publication Date
EP3290841A1 EP3290841A1 (fr) 2018-03-07
EP3290841B1 true EP3290841B1 (fr) 2019-10-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16186339.4A Active EP3290841B1 (fr) 2016-08-30 2016-08-30 Dispositif de réfrigérateur fonctionnant sur le secteur

Country Status (6)

Country Link
US (1) US20190249920A1 (fr)
EP (1) EP3290841B1 (fr)
JP (1) JP2019532250A (fr)
CN (1) CN110073156B (fr)
DK (1) DK3290841T3 (fr)
WO (1) WO2018041571A1 (fr)

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JP2019532250A (ja) 2019-11-07
DK3290841T3 (da) 2020-01-02
WO2018041571A1 (fr) 2018-03-08
CN110073156B (zh) 2021-06-08
CN110073156A (zh) 2019-07-30
EP3290841A1 (fr) 2018-03-07
US20190249920A1 (en) 2019-08-15

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