WO2000065882A1 - Device for the automatic switching on of the light without mechanical contact in refrigerators and cold rooms - Google Patents
Device for the automatic switching on of the light without mechanical contact in refrigerators and cold rooms Download PDFInfo
- 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
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
Abstract
Description
Claims
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 (en) | 1999-04-21 | 2000-04-13 | Device for the automatic switching on of the light without mechanical contact in refrigerators and cold rooms |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999PD000080A IT1307187B1 (en) | 1999-04-21 | 1999-04-21 | DEVICE FOR THE AUTOMATIC SWITCHING ON OF LIGHT FOR REFRIGERATORS AND REFRIGERATING CELLS WITHOUT MECHANICAL CONTACT |
ITPD99A000080 | 1999-04-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000065882A1 true WO2000065882A1 (en) | 2000-11-02 |
Family
ID=11392565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2000/000145 WO2000065882A1 (en) | 1999-04-21 | 2000-04-13 | Device for the automatic switching on of the light without mechanical contact in refrigerators and cold rooms |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1172023A1 (en) |
AU (1) | AU4609600A (en) |
IT (1) | IT1307187B1 (en) |
WO (1) | WO2000065882A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10358071A1 (en) * | 2003-11-21 | 2005-06-30 | Hugo Görner GmbH | Interior lighting for a temperature control unit with a light-emitting diode as the light source |
WO2008119807A2 (en) * | 2007-04-02 | 2008-10-09 | Arcelik Anonim Sirketi | A cooling device |
ITMI20081475A1 (en) * | 2008-08-06 | 2010-02-07 | I C A Internat S R L | LIGHTING DEVICE FOR APPLIANCES |
WO2012163776A3 (en) * | 2011-05-27 | 2013-04-11 | BSH Bosch und Siemens Hausgeräte GmbH | A cooling device |
CN109900063A (en) * | 2019-04-04 | 2019-06-18 | 吴建堂 | Touch refrigerator is not closed the door alarm device |
Citations (7)
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 |
-
1999
- 1999-04-21 IT IT1999PD000080A patent/IT1307187B1/en active
-
2000
- 2000-04-13 WO PCT/IT2000/000145 patent/WO2000065882A1/en not_active Application Discontinuation
- 2000-04-13 AU AU46096/00A patent/AU4609600A/en not_active Abandoned
- 2000-04-13 EP EP00927710A patent/EP1172023A1/en not_active Withdrawn
Patent Citations (7)
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 (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10358071A1 (en) * | 2003-11-21 | 2005-06-30 | Hugo Görner GmbH | Interior lighting for a temperature control unit with a light-emitting diode as the light source |
WO2008119807A2 (en) * | 2007-04-02 | 2008-10-09 | Arcelik Anonim Sirketi | A cooling device |
WO2008119807A3 (en) * | 2007-04-02 | 2009-03-05 | Arcelik As | A cooling device |
ITMI20081475A1 (en) * | 2008-08-06 | 2010-02-07 | I C A Internat S R L | LIGHTING DEVICE FOR APPLIANCES |
WO2012163776A3 (en) * | 2011-05-27 | 2013-04-11 | BSH Bosch und Siemens Hausgeräte GmbH | A cooling device |
CN109900063A (en) * | 2019-04-04 | 2019-06-18 | 吴建堂 | Touch refrigerator is not closed the door alarm device |
Also Published As
Publication number | Publication date |
---|---|
EP1172023A1 (en) | 2002-01-16 |
ITPD990080A1 (en) | 2000-10-21 |
ITPD990080A0 (en) | 1999-04-21 |
AU4609600A (en) | 2000-11-10 |
IT1307187B1 (en) | 2001-10-29 |
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