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WO2000065882A1 - Dispositif sans contact mecanique pour allumer automatiquement la lumiere dans des refrigerateurs et des chambres froides - Google Patents

Dispositif sans contact mecanique pour allumer automatiquement la lumiere dans des refrigerateurs et des chambres froides Download PDF

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Publication number
WO2000065882A1
WO2000065882A1 PCT/IT2000/000145 IT0000145W WO0065882A1 WO 2000065882 A1 WO2000065882 A1 WO 2000065882A1 IT 0000145 W IT0000145 W IT 0000145W WO 0065882 A1 WO0065882 A1 WO 0065882A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
door
senses
switching
sensing circuit
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.)
Ceased
Application number
PCT/IT2000/000145
Other languages
English (en)
Inventor
Giorgio Stella
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU46096/00A priority Critical patent/AU4609600A/en
Priority to EP00927710A priority patent/EP1172023A1/fr
Publication of WO2000065882A1 publication Critical patent/WO2000065882A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F25D27/00—Lighting arrangements
    • F25D27/005—Lighting arrangements combined with control means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the present invention concerns the field of cold rooms and refrigerators and in particular it concerns the devices employed to switch on the light and illuminate the inside of refrigerators and cold rooms.
  • Refrigerators, cold rooms and other similar structures are provided with one or more internal lamps that are automatically switched on when the door is opened.
  • the new device comprises a lamp and a circuit that senses when the door is open, constituted by several elements and operating stages
  • All the components of the new device are contained in an airtight casing that can be fixed to any point of the room to be illuminated and not necessarily in correspondence with its door
  • the operating principle of the new device is based on the fact that it senses the light coming in through the door that is being opened
  • the device When the door is opened, the device senses an increase in the quantity of light that comes in and activates the switching on of the lamp The device periodically switches off the lamp and checks the amount of light present in the room if the door is open there is light and therefore the device switches on the lamp again, while if the door is closed there is no light and the device does not switch on the lamp In this way the mechanical parts don't wear out and the user can be sure that the light will be switched on as soon as the door is opened
  • the circuit that senses the presence of light and manages the operation of the lamp comprises several elements and stages, and precisely a sensing stage, a triggering stage, a switch-off timer, a power management stage, a power supply stage and a negative feedback stage
  • the sensing unit comprises a phototransistor m darlmgton configuration with a BC 237, which ensures considerable sensitivity When light enters the room (door opening) the potential on the Ql sender increases This causes the switching over of the ICl comparator (LM 311) that enables the triggering phase
  • the other mlet of the comparator (operating threshold) is connected to other 2 transistors in darlmgton configuration In this way considerable sensitivity and thermal stability are obtained, since the two thresholds move in the same direction (though maintaining the same relative distance) as the temperature varies
  • the sensing unit is provided with a light sensoi, usually a phototransistor (for example in darlmgton configuration with a BC 237) Even the minimum light makes the potential increase, while the phototransistor is earthed when there is no light at all Even the minimum light enables the triggering stage
  • the triggering unit comprises a E555 m astable configuration, which triggers the control timer for the switching on of the light
  • the switch-off timer comprises a NE555 in monostable configuration and determines how long the light remains on This lapse of time can be set approximately between 30 seconds and
  • the power management unit comprises an optotnac insulating element that ensures the maximum safety
  • the optotnac directly pilots the t ⁇ ac that feeds the lamp In this way perfect insulation between the sensing circuit and the lamp power supply circuit is guaranteed
  • the power supply unit comprises a circuit that regulates and stabilizes the power supply to the whole sensing circuit
  • the negative feedback unit is a circuit that delays the successive switching on of the light m order to avoid undesirable oscillations
  • the additional timer starts counting and is set to zero as soon as the door is closed again
  • the acoustic signaller is operated, in such a way as to warn the user that the door is still open.
  • the device described above can be provided with two electrical contacts (NC contact - NO contact) that for example can be used to switch off the refrigerator fan when the door is opened.
  • the two electrical contacts are piloted by the light control.
  • FIG. 1 shows a possible electronic diagram of the sensing unit (SI), in which the phototransistor (Q5) that senses the presence of light can be observed.
  • FIG. 2 shows a possible electronic diagram of the triggering unit (S2), the switch- off timer (S3) and the negative feedback
  • the three units (S2, S3, S4) are connected to one another in order to obtain the optimal operation of the circuit.
  • FIG. 3 shows a possible electronic diagram of the power management unit (S5) and the power supply unit (S6).
  • the device and/or its elements can be realized with different dimensions and shapes that are all included in the inventive concepts expressed in the following

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

L'invention concerne un nouveau dispositif permettant d'allumer automatiquement la lumière dans des réfrigérateurs et des chambres froides, ce nouveau dispositif étant constitué d'un circuit qui détecte toute ouverture de la porte. Ce circuit comprend plusieurs éléments et fonctionne selon plusieurs étapes, de sorte que ce circuit peut régir l'allumage d'une lampe lorsqu'il capte la lumière émise depuis la porte ouverte du réfrigérateur ou de la chambre froide, ce circuit permettant également d'éteindre cette lampe lorsqu'il ne détecte plus aucune lumière suite à la fermeture de la porte. De plus, ce circuit de détection éteint périodiquement la lumière afin de vérifier si une lumière provient de l'extérieur, autrement dit si la porte est ouverte ou fermée. Ce circuit comporte: une unité de détection munie d'un capteur de lumière (habituellement un phototransistor); une unité d'enclenchement destinée à commander une minuterie de mise en circuit; une minuterie de mise hors circuit qui détermine le laps de temps pendant lequel cette lumière restera allumée (ce laps de temps pouvant en effet être réglé); une unité de gestion de l'alimentation munie d'un élément d'isolation conçu pour séparer le circuit de détection de l'alimentation de la lampe; une unité d'alimentation destinée à réguler et à stabiliser l'alimentation fournie à l'ensemble dudit circuit de détection; et enfin une unité de contre-réaction qui retarde l'allumage de la lumière pour éviter toute oscillation indésirable. De plus, une minuterie supplémentaire est conçue pour commander un dispositif de signalisation acoustique une fois dépassé le laps de temps réglé, le circuit ne pouvant alors détecter la fermeture de la porte.
PCT/IT2000/000145 1999-04-21 2000-04-13 Dispositif sans contact mecanique pour allumer automatiquement la lumiere dans des refrigerateurs et des chambres froides Ceased WO2000065882A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU46096/00A AU4609600A (en) 1999-04-21 2000-04-13 Device for the automatic switching on of the light without mechanical contact inrefrigerators and cold rooms
EP00927710A EP1172023A1 (fr) 1999-04-21 2000-04-13 Dispositif sans contact mecanique pour allumer automatiquement la lumiere dans des refrigerateurs et des chambres froides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999PD000080A IT1307187B1 (it) 1999-04-21 1999-04-21 Dispositivo per l'accensione automatica di luce per frigoriferi ecelle frigorifere senza contatto meccanico
ITPD99A000080 1999-04-21

Publications (1)

Publication Number Publication Date
WO2000065882A1 true WO2000065882A1 (fr) 2000-11-02

Family

ID=11392565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2000/000145 Ceased WO2000065882A1 (fr) 1999-04-21 2000-04-13 Dispositif sans contact mecanique pour allumer automatiquement la lumiere dans des refrigerateurs et des chambres froides

Country Status (4)

Country Link
EP (1) EP1172023A1 (fr)
AU (1) AU4609600A (fr)
IT (1) IT1307187B1 (fr)
WO (1) WO2000065882A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358071A1 (de) * 2003-11-21 2005-06-30 Hugo Görner GmbH Innenbeleuchtung für ein Temperiergerät mit einer Leuchtdiode als Lichtquelle
WO2008119807A3 (fr) * 2007-04-02 2009-03-05 Arcelik As Dispositif de refroidissement
ITMI20081475A1 (it) * 2008-08-06 2010-02-07 I C A Internat S R L Dispositivo di illuminazione per elettrodomestici
WO2012163776A3 (fr) * 2011-05-27 2013-04-11 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de refroidissement
CN109900063A (zh) * 2019-04-04 2019-06-18 吴建堂 触摸式电冰箱未关门告警器
CN116717951A (zh) * 2023-07-05 2023-09-08 Tcl家用电器（合肥）有限公司 冰箱的控制方法、控制电路以及冰箱

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390768A (en) * 1980-09-24 1983-06-28 Raytheon Company Cook-by-weight microwave oven
US4629090A (en) * 1984-03-17 1986-12-16 Robobar Limited Hotel room bar with optical sensing system
US4707338A (en) * 1984-03-23 1987-11-17 Donald Spector Light-activated aroma generator with automatic cutoff
US4754376A (en) * 1987-10-27 1988-06-28 Winslow Charles H Automatic ice chest light
US4812810A (en) * 1988-01-25 1989-03-14 Whirlpool Corporation Fiber optic door sensor for a domestic appliance
US5451930A (en) * 1992-07-27 1995-09-19 Mcdaniel; Steven M. Emergency condition, door ajar, and temperature alarm for appliances
US5894275A (en) * 1998-04-01 1999-04-13 Headway, Inc. Voice recorder/playback module

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390768A (en) * 1980-09-24 1983-06-28 Raytheon Company Cook-by-weight microwave oven
US4629090A (en) * 1984-03-17 1986-12-16 Robobar Limited Hotel room bar with optical sensing system
US4707338A (en) * 1984-03-23 1987-11-17 Donald Spector Light-activated aroma generator with automatic cutoff
US4754376A (en) * 1987-10-27 1988-06-28 Winslow Charles H Automatic ice chest light
US4812810A (en) * 1988-01-25 1989-03-14 Whirlpool Corporation Fiber optic door sensor for a domestic appliance
US5451930A (en) * 1992-07-27 1995-09-19 Mcdaniel; Steven M. Emergency condition, door ajar, and temperature alarm for appliances
US5894275A (en) * 1998-04-01 1999-04-13 Headway, Inc. Voice recorder/playback module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358071A1 (de) * 2003-11-21 2005-06-30 Hugo Görner GmbH Innenbeleuchtung für ein Temperiergerät mit einer Leuchtdiode als Lichtquelle
WO2008119807A3 (fr) * 2007-04-02 2009-03-05 Arcelik As Dispositif de refroidissement
ITMI20081475A1 (it) * 2008-08-06 2010-02-07 I C A Internat S R L Dispositivo di illuminazione per elettrodomestici
WO2012163776A3 (fr) * 2011-05-27 2013-04-11 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de refroidissement
CN109900063A (zh) * 2019-04-04 2019-06-18 吴建堂 触摸式电冰箱未关门告警器
CN116717951A (zh) * 2023-07-05 2023-09-08 Tcl家用电器（合肥）有限公司 冰箱的控制方法、控制电路以及冰箱
CN116717951B (zh) * 2023-07-05 2025-11-21 Tcl家用电器（合肥）有限公司 冰箱的控制方法、控制电路以及冰箱

Also Published As

Publication number Publication date
AU4609600A (en) 2000-11-10
EP1172023A1 (fr) 2002-01-16
ITPD990080A1 (it) 2000-10-21
IT1307187B1 (it) 2001-10-29
ITPD990080A0 (it) 1999-04-21

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