EP1030143B1 - Cool water dispenser device for refrigerator - Google Patents

Cool water dispenser device for refrigerator Download PDF

Info

Publication number
EP1030143B1
EP1030143B1 EP20000200421 EP00200421A EP1030143B1 EP 1030143 B1 EP1030143 B1 EP 1030143B1 EP 20000200421 EP20000200421 EP 20000200421 EP 00200421 A EP00200421 A EP 00200421A EP 1030143 B1 EP1030143 B1 EP 1030143B1
Authority
EP
European Patent Office
Prior art keywords
water
dispenser device
solenoid valve
tank
characterized
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.)
Expired - Fee Related
Application number
EP20000200421
Other languages
German (de)
French (fr)
Other versions
EP1030143A2 (en
EP1030143A3 (en
Inventor
Silvano Fumagalli
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.)
Candy SpA
Original Assignee
Candy SpA
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
Priority to ITMI990318 priority Critical patent/IT1308712B1/en
Priority to ITMI990318 priority
Application filed by Candy SpA filed Critical Candy SpA
Publication of EP1030143A2 publication Critical patent/EP1030143A2/en
Publication of EP1030143A3 publication Critical patent/EP1030143A3/en
Application granted granted Critical
Publication of EP1030143B1 publication Critical patent/EP1030143B1/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D23/00General constructional features
    • F25D23/12Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126Water cooler
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00Apparatus or devices for dispensing beverages on draught
    • B67D1/0003Apparatus or devices for dispensing beverages on draught the beverage being a single liquid
    • B67D1/0009Apparatus or devices for dispensing beverages on draught the beverage being a single liquid the beverage being stored in an intermediate container connected to a supply
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B67OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67DDISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D2210/00Indexing scheme relating to aspects and details of apparatus or devices for dispensing beverages on draught or for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D2210/00028Constructional details
    • B67D2210/00031Housing
    • B67D2210/00034Modules
    • B67D2210/00036Modules for use with or in refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D2323/00General constructional features not provided for in other groups of this subclass
    • F25D2323/121General constructional features not provided for in other groups of this subclass the refrigerator is characterised by a water filter for the water/ice dispenser

Description

  • The present invention refers to a cool water dispenser device for a refrigerator, particularly for a domestic type appliance.
  • Domestic refrigerators are known that are internally equipped, with dispensing devices ("dispensers'') for cool water. Such dispensers provide for the use of a tank, that being adequately connected with an external water network that is always present in environments where refrigerators are located, allows the accumulation of drinkable water. This tank is situated internally of the heat insulated casing of the refrigerator in a such way as to keep a determined quantity of drinkable water constantly cooled, that is possible to tap through output water delivering means.
  • However, this device provides for the utilisation of appropriate internal filters suitable to purify the drinkable water incoming from the water network from possible organic compounds, from products of the reaction of the chlorine present in the water, from substances released by the piping of the water network. Such filter has a filtration capacity that is determined by the litres of water being treated. After a certain number of litres it is opportune to replace the filter cartridge in order to prevent to lose in effectiveness in the filtering action.
  • US-A-3 982 406 discloses a water dispenser for refrigerator according to the preamble of claim 1.
  • In view of the state of the art herein described, object of the present invention is to realise a dispenser of cool water for a refrigerator, in particular for a domestic refrigerator, that is capable to dispense cooled water without the inconveniences shown by the known dispensers.
  • According to the present invention, such object is attained by means of a cool water dispenser device for a refrigerator as defined in claim 1.
  • Preferably, said electronic control unit is also suitable to control the closing of said valve means when a pre-established period of time is over.
  • Owing to the present invention it is possible to provide realise a control of the quantity of water loaded in the dispenser's tanks through time, and it is possible to control the state of deterioration of the filter of the drinkable water due to the quantity of filtered water and possibly also to the utilisation time of the latter, thus allowing its substitution in the opportune moment.
  • The characteristics and the advantages of the present invention will be made evident by the following detailed description of two embodiments thereof, that are illustrated as a non limiting example in the enclosed drawing, in which:
    • Figure 1 represents a block diagram of the control device according to a first embodiment which does not form part of the invention, but it is useful to understand it;
    • Figure 2 represents a layout of the control device according to an embodiment of the invention;
    • Figure 3 represents the block diagram of the operation of the control device more in detail.
  • With reference to Figure 1, there is shown a block diagram of the hydraulic circuit according of a dispenser. The water 1 deriving from an external water network feeds a tank 4 through a solenoid valve 2 and, downstream of the same, there is a litre-counter 3. Said litre-counter 3 can either be a separate device from the solenoid valve 2, or it can be integrated therein. The tank for the accumulation of the water 4 is inserted in a heat insulated and refrigerated casing located inside the refrigerator, so as to refrigerate the drinkable water of the external water network. The solenoid valve 2 that allows the flow of the network water 1 into the tank is essentially made up of a mechanical valve whose closing and opening operation is controlled by the switch 9 located on the door 10 of the refrigerator, in normal conditions of operation. The closing of the solenoid valve 2 can be controlled also by an electronic control device 8 in particular cases of operation. The litre-counter is a device for the reading of the flow of the water and is usually made up of an electromechanical apparatus that allows to obtain a certain number of digital pulses for each litre of water that goes through the solenoid valve 1. It can be realised by different implementations.
  • A first type of litre-counter device provides the use of an electrodynamic circuit in which a mechanical revolving mean, made up of paddles, is connected with a magnet and with a reed reading element. By turning, the magnet determines the opening and the closing of the reed contact. The contact closing and opening actions are monitored by the electronic control device 8. A variation of this type of device provides for the use of different elements as paddles for the mechanical revolving mean, some of which the possibility is given to reflect a bright signal, adequately produced, so that it is possible to excite a photo-detector element (a photodiode or a phototransistor) that produces measurable pulses.
  • A second type of litre-counter device provides for the use of a piezoelectric sensor that is sensitive to the pressure variations. A body introduced in the path of the water and adequately modelled in order to create loops therein creates vortexes and therefore sudden pressure changes that can be detected by the piezoelectric sensor. The mechanical vibrations are transduced into measurable electric pulses.
  • A filter 5 suitable to purify the drinkable water deriving from the external water network is located downstream of the refrigerant tank 4 in order to treat only the water that is used immediately. It is generally manufactured with a material that allows to eliminate possible organic compounds, products of the reaction of the chlorine present in the water and substances released by the piping of the water network in the common use water.
  • The switch 9 of the dispensers is advantageously situated on the door 10 of the refrigerator appliance and controls the opening and closing operation of the solenoid valve 2, in such a way as to allow the inflow of new network water in the tank 4, in order to replace the water previously tapped.
  • Downstream of the filter 5 a dispenser 6 for the delivery of cool water is provided.
  • In Figure 3 the action of the control device 8 is shown more in detail. It is known that the filter 5 deteriorates for quantity of filtered water and for time of utilisation. By reading the water flow, the litre-counter 3 provides a certain number of pulses to the control device for each litre of water that flows in the dispenser. Such control device consists essentially of a microprocessor data acquisition circuit 80, that it is possible to set so that it controls the closing of the solenoid valve 2 upon the attainment of the number of wanted litres, and therefore stops the water feed to the dispensers. Since the filter 5 also deteriorates with the time of utilisation, it is possible and preferable to set a timer in the control device, in order to cause it to close the solenoid valve 2, thus stopping the delivery of water even after a desired period of time.
  • The microprocessor 80 is connected with a file memory 11, that is used to store the readings of the litre-counter 3 and possibly the value of the timer, in the case of sudden or lasting lack of supply voltage of the electronic control device.
  • In addition an user interface device 14 is connected with the microprocessor 80. In this way the user can reset the count of the litres of water that go through the tank 4 and reactivate the delivery. The attainment of the quantity of water being set can be signalled through an acoustic or optical signaller.
  • During the normal use of the apparatus, it is also possible to visualise the instantaneous water consumption on a display 13, that can consists of a numerical device or of an analog hand indicator or only of a light led.
  • In Figure 2 there is shown an embodiment of the dispenser according to the present invention in which the use of a second solenoid valve 12 is provided, that is placed downstream of the tank 4, that controls the delivery of cool water. The opening and closing of said solenoid valve are also controlled by the switch 9, in normal conditions of operation. In addition the closing of said solenoid valve can be controlled by the control device 8, when it is necessary to change the filter.

Claims (8)

  1. Cool water dispenser device for a refrigerator, in particular for a domestic refrigerator, comprising a tank (4) for the accumulation of drinkable water adapted to be housed in a heat insulated casing of the refrigerator, a filter (5) to purify the network water, means for connection to an external watering system of drinkable water, means for the delivery of the cool water (6) contained in said tank (4), said filter (5) being placed downstream of the tank and said dispenser device including a control device comprising a first solenoid valve (2) interposed between the external watering system of the drinkable water (1) and the tank (4), characterized in that said control device comprises a meter (3) for counting the quantity of water that is fed to the tank, an electronic control unit (8) that is connected with said meter and controls the closing of said first solenoid valve (2) when said quantity of water that is counted by the meter (3) reaches a pre-established value or when a pre-established time period has elapsed, said dispenser device comprising a switch (9) that controls the opening and the closing operation of said solenoid valve (2) in the other normal conditions of use, said dispenser device comprising a second solenoid valve (12) placed downstream of the tank (4) and which controls the delivery of the cool water and whose opening and closing are controlled by the switch (9) in normal conditions of use, while the closing of said second solenoid valve (12) is controlled by the control device in case the substitution of the filter becomes necessary.
  2. Dispenser device according to claim 1, characterized in that the switch (9) controls the opening/closing operation of the solenoid valve (2) upon the opening/closing operation of the door (10) of the refrigerator.
  3. Dispenser device according to any one of the previous claims, characterized in that said meter (3) of the quantity of water consists of an electromechanical apparatus that provides pulses according to the quantity of water (1), in litres, that goes through the solenoid valve (2).
  4. Dispenser device according to claim 3, characterized in that said electronic control unit (8) consists of a microprocessor data acquisition circuit (80) that, by receiving the data from the meter (3), controls the closing of the solenoid valve (2) in such a way that the substitution of the filter (5) that deteriorates because of the quantity of drinkable filtered water or because of the time of utilisation becomes possible.
  5. Dispenser device according to claim 4, characterized in that said electronic control unit (8) comprises a file memory unit (11) to store the readings in case of lack of supply voltage.
  6. Dispenser device according to claim 5, characterized in that said electronic control unit (8) is connected with a indicator device (13) adapted to visualise the instantaneous consumption of cool water (6), said indicator device (3) consisting of a numerical display or of an analog hand indicator or just of a light led.
  7. Dispenser according to claim 5, characterized in that said control device comprises an user interfacing device (14) connected with said control unit (8) and which is adapted to reset the count of the litres of water that go through the refrigerant tank and to restart its delivery, said dispenser device comprising an acoustic or optical signaller for signalling the attainment of the set quantity of water through.
  8. Refrigerator, particularly for domestic use, comprising a refrigerated heat insulated casing, characterized in that it comprises a water dispenser device according to any one of the previous claims.
EP20000200421 1999-02-18 2000-02-08 Cool water dispenser device for refrigerator Expired - Fee Related EP1030143B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITMI990318 IT1308712B1 (en) 1999-02-18 1999-02-18 Dispenser device of fresh water for refrigerator
ITMI990318 1999-02-18

Publications (3)

Publication Number Publication Date
EP1030143A2 EP1030143A2 (en) 2000-08-23
EP1030143A3 EP1030143A3 (en) 2001-02-28
EP1030143B1 true EP1030143B1 (en) 2005-03-23

Family

ID=11381929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000200421 Expired - Fee Related EP1030143B1 (en) 1999-02-18 2000-02-08 Cool water dispenser device for refrigerator

Country Status (4)

Country Link
EP (1) EP1030143B1 (en)
DE (1) DE60018828T2 (en)
ES (1) ES2240006T3 (en)
IT (1) IT1308712B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8240092B2 (en) 2001-05-25 2012-08-14 Hill-Rom Services, Inc. Headwall to bed interface

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6405491B1 (en) 1999-04-22 2002-06-18 Hill-Rom Services, Inc. Modular patient room
US7174678B2 (en) * 1999-04-22 2007-02-13 Hill-Rom Services, Inc. Modular patient room
US6637049B2 (en) 2001-05-25 2003-10-28 Hill-Rom Services, Inc. Personal care module
US6978499B2 (en) 2001-05-25 2005-12-27 Hill-Rom Services, Inc. Architectural bed docking apparatus
CN100498164C (en) 2003-08-25 2009-06-10 乐金电子(天津)电器有限公司 Distributor of refrigerator
US7201005B2 (en) * 2004-06-04 2007-04-10 Whirlpool Corporation Measured fill water dispenser for refrigerator freezer
ITTO20040546A1 (en) * 2004-08-03 2004-11-03 Merloni Elettrodomestici Spa A refrigeration apparatus with water dispenser
DE102005057132A1 (en) * 2005-11-30 2007-06-06 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator with water filter
DE102007017840A1 (en) 2007-04-16 2008-10-23 BSH Bosch und Siemens Hausgeräte GmbH The refrigerator with water filter
KR100900300B1 (en) 2009-02-23 2009-06-02 주식회사 크로버 Water dispenser

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982406A (en) * 1975-11-28 1976-09-28 General Motors Corporation Refrigerator water storage and dispensing system with water filter
US4681677A (en) * 1978-02-17 1987-07-21 Olin Corporation Water processor having automatic shutoff and bypass means
US4769135A (en) * 1987-03-02 1988-09-06 Culligan International Company Automatic metering system
US4918426A (en) * 1988-05-02 1990-04-17 Amway Corporation Method and apparatus for sensing fluid flow volume to indicate end of filter life
US5135645A (en) * 1991-03-28 1992-08-04 Raytheon Company Refrigerator water filter
WO1994020784A1 (en) * 1993-03-05 1994-09-15 Sheringham Investments Pty. Ltd. Dispenser for hot and cold water
US5499197A (en) * 1994-04-05 1996-03-12 Fou; Hsu-Chao Intelligent and all-bearing control circuit device of reverse osmosis drinking water machine
AU5308096A (en) * 1995-03-15 1996-10-02 Elkay Manufacturing Company Liquid flow monitor
US5636653A (en) * 1995-12-01 1997-06-10 Perception Incorporated Fluid metering apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8240092B2 (en) 2001-05-25 2012-08-14 Hill-Rom Services, Inc. Headwall to bed interface
US8418287B2 (en) 2001-05-25 2013-04-16 Hill-Rom Services, Inc. Bed side rail having cavity for infusion unit

Also Published As

Publication number Publication date
DE60018828T2 (en) 2006-04-13
ES2240006T3 (en) 2005-10-16
EP1030143A2 (en) 2000-08-23
DE60018828D1 (en) 2005-04-28
ITMI990318A1 (en) 2000-08-18
EP1030143A3 (en) 2001-02-28
IT1308712B1 (en) 2002-01-10

Similar Documents

Publication Publication Date Title
US6491811B2 (en) Sensor for a water treatment apparatus
US5907958A (en) Refrigerator water filter
JP4790633B2 (en) For the refrigerator, with water filter water dispenser
US5435909A (en) Water quality monitor for a water purification system
US5813245A (en) Pressure relief circuit for refrigerator contained water filter
JP3928667B2 (en) dispenser
US8585827B2 (en) Beverage preparation device with in-line scale removal system and descaling method using such system
US4784763A (en) Water purification machine
AU2005202434B2 (en) Measured fill water dispenser for refrigerator freezers
US7164851B2 (en) Modular tankless water heater control circuitry and method of operation
US5820691A (en) Backup assembly and method for chemical sanitizing in a sanitizing zone of a pot and pan sink
US5568825A (en) Automatic leak detection and shut-off system
US6491879B2 (en) Ozone generator
US20040007516A1 (en) Water filter assembly
EP1078198B1 (en) Liquid flow control valve
US7002161B2 (en) Treated water dispensing system
US6369714B2 (en) Water leak detection and correction device
US6355177B2 (en) Water filter cartridge replacement system for a refrigerator
US6582563B1 (en) Water purification system
AU770096B2 (en) Filtered fluid dispensing system
WO1993017611A1 (en) Self-optimizing detergent controller
WO1993020425A1 (en) Utilities shutoff system
US7188486B2 (en) Refrigerator water supply systems
CA2024430A1 (en) Water treatment apparatus
KR20020026417A (en) Water dispensing apparatus with filter integrity testing system

Legal Events

Date Code Title Description
AK Designated contracting states:

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent to

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Classification (correction)

Free format text: 7F 25D 23/12 A, 7B 67D 1/08 B, 7B 67D 1/00 B, 7B 01D 35/143 B

AX Request for extension of the european patent to

Free format text: AL;LT;LV;MK;RO;SI

AK Designated contracting states:

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20010728

AKX Payment of designation fees

Free format text: DE ES FR GB IT

17Q First examination report

Effective date: 20030807

AK Designated contracting states:

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60018828

Country of ref document: DE

Date of ref document: 20050428

Kind code of ref document: P

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2240006

Country of ref document: ES

Kind code of ref document: T3

26N No opposition filed

Effective date: 20051227

ET Fr: translation filed
PGFP Postgrant: annual fees paid to national office

Ref country code: IT

Payment date: 20120217

Year of fee payment: 13

PGFP Postgrant: annual fees paid to national office

Ref country code: ES

Payment date: 20130207

Year of fee payment: 14

Ref country code: GB

Payment date: 20130218

Year of fee payment: 14

Ref country code: FR

Payment date: 20130321

Year of fee payment: 14

PGFP Postgrant: annual fees paid to national office

Ref country code: DE

Payment date: 20130429

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60018828

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140208

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20141031

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60018828

Country of ref document: DE

Effective date: 20140902

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140208

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140902

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150528

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140209

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140208