WO1993008432A1 - Cooling system - Google Patents
Cooling system Download PDFInfo
- Publication number
- WO1993008432A1 WO1993008432A1 PCT/AU1992/000560 AU9200560W WO9308432A1 WO 1993008432 A1 WO1993008432 A1 WO 1993008432A1 AU 9200560 W AU9200560 W AU 9200560W WO 9308432 A1 WO9308432 A1 WO 9308432A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- ice
- cold
- side interface
- cooling
- 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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
- B67D3/0009—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes provided with cooling arrangements
-
- 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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
- F25B2321/0251—Removal of heat by a gas
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
- F25B2700/111—Sensor to detect if defrost is necessary using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor
Definitions
- THIS INVENTION relates to cooling systems, but in particular relates to water coolers for drinking water.
- Cooling systems are commonly used in many domestic, commercial, or industrial situations where there is a need or a desire for the provision of cold drinking water.
- Water coolers in particular are traditionally fairly large although this is often used advantageously by designing aesthetically pleasing bodies or stands.
- Water coolers in particular generally come in two forms; those that have an upper inverted bottle of water and a lower stand or body, and those that are supplied with mains water and thus simply have a body with an upper drinking spout or the like.
- both of these types of water coolers have used standard refrigeration components such as a compressor, an evaporator, a condenser and a thermostat.
- the compressor compresses vapour into a high pressure gas which is then condensed into a liquid in the condenser.
- the high pressure liquid is then expanded in the evaporator and absorbs heat as it changes state.
- the thermostat controls the temperature of the medium being cooled by switching the compressor on and off as required.
- these systems run for only 6 to 10 hours per day and require comparatively large amounts of energy to run and large amounts of space to house the apparatus.
- thermoelectric module there are two metal interfaces which provide two functions. Firstly, the cold-side interface absorbs heat from the medium to be cooled while the hot-side interface dissipates heat to another medium, typically ambient air via a heat sink such as a vaned baffle. Secondly, the interfaces enable the module itself to be sealed into a plastic housing, as thermoelectric modules are readily degraded by condensation.
- the present invention provides a cooling system which produces ice and then uses the energy stored in the ice to cool a liquid
- the cooling system having a supply of liquid in fluid communication with a cooling chamber, there being an ice producing means located at least partially within the cooling chamber, the ice producing means including a thermoelectric module having a cold-side interface and a hot—side interface, the cold-side interface being in direct or indirect communication with liquid in the cooling chamber and the hot-side interface being located externally of the cooling chamber and being connected to a hot-side heat sink for the dissipation of heat generated thereby, and a power supply being connected to the thermoelectric module wherein as heat is absorbed from the liquid by the cold-side interface, local freezing of the liquid immediately about the cold-side interface occurs and ice is produced thereon.
- the present invention provides a water cooler having a supply of drinking water in fluid communication with a cooling chamber, there being an ice producing means located at least partially within the cooling chamber, the ice producing means including a thermoelectric module having a cold-side interface and a hot-side interface, the cold-side interface being in direct or indirect communication with water in the cooling chamber and the hot-side interface being located externally of the cooling chamber and being connected to a hot-side heat sink for the dissipation of heat generated thereby, and a power supply being connected to the thermoelectric module, wherein as heat is absorbed from the water by the cold-side interface, local freezing of the water immediately about the cold-side interface occurs and ice is generated thereon.
- the cold-side interface is indirectly in communication with the water, there being a cooling surface and a cold-side heat sink located intermediate the cold-side interface and the water.
- a copper disc may be fixed to the cold-side interface so that the heat is absorbed through the disc to form ice on the surface of the disc.
- an aluminium block may define the cold-side heat sink and the surface of the block will then be the cooling surface.
- the surface may include a stainless steel face to assist in preventing corrosion.
- the water cooler preferably also includes a sensing means in the form of a photo-optic sensing device, to determine when the ice produced is large enough to be released into the cooling chamber.
- a sensing means in the form of a photo-optic sensing device, to determine when the ice produced is large enough to be released into the cooling chamber.
- sensing devices such as an ultra-sonic sensing device may be utilised.
- the photo-optic sensing device is preferably an infrared beam of light capable of being received by a sensor such as a photo transistor.
- the sensing device is preferably configured so that the beam of light passes over the cold- side interface of the thermoelectric module (or the cooling surface if utilised) within the cooling chamber.
- reference to the cold-side interface in the following description is to be understood to refer to that part of the ice producing means that is in contact with the water although in the most preferred embodiment of the present invention that will be the cooling surface.
- An infrared beam is preferred as this is not effected by ambient or white light which may enter the cooling chamber, however, the sensing device may use other light forms or varying wave lengths as necessary and if required.
- the beam preferably passes over the cold-side interface at a height considered suitable for a corresponding thickness of ice. As the ice grows, the beam is broken and the sensor switches the power supply to the thermoelectric module off.
- the water cooler of the present invention has been found to be capable of cooling drinking water to between 1° and 3° Celsius. However, water at this..temperature is often considered unacceptably cold. Therefore, it is preferred to warm the water somewhat before it is dispensed.
- the water cooler of this invention- may also include a water mixing device which allows preferential mixing of an amount of the incoming ambient water with the cooled water of the cooling chamber.
- the water cooler of this invention may also include an ice dispersing means located above the thermoelectric module to assist in dispersing the released ice blocks throughout the body of the cooling chamber to prevent an uneven stacking of those ice blocks.
- the ice dispersing means is preferably configured to be a part of a water baffle cap which is preferably provided to separate an inverted water bottle (where that is used as the supply of water) from the cooling chamber.
- the water baffle cap also serves to prevent the ice generated from flowing into the bottle which would displace water and possibly cause flooding, and it also prevents the water in the bottle from itself becoming too cold.
- the cooling chamber is an insulated chamber and thus is generally unaffected by outside conditions.
- Figure 2 is a cross sectional view of a preferred embodiment of the water cooler of Figure 1.
- FIG. 2 Illustrated in Figure 2 is a water cooler 10 having a cooling chamber 12, a dispensing outlet 14 and a water bottle receiving neck 16.
- the cooling chamber 12 is substantially surrounded by insulating material 18 and is within an outer shell 20 that may be constructed of any preferred material, such as a ceramic material.
- the ice producing means 24 comprises a thermoelectric module 26 having a cold-side interface 28 which abuts a cold side heat sink 30 which in turn has a cooling surface 32 in the form of a stainless steel face.
- the thermoelectric module 26 also has a hot-side interface 34 which abuts and is connected to a hot side sink 36.
- the ice producing means is virtually provided as a single unit in the form of a cooling module 50 that includes housings 52 for the sensing means 42 and may be moulded with the cold-side heat sink 30 in place.
- the cooling module 50 may then be located within an appropriately sized opening in the bottom wall 22 of the cooling chamber 12 and secured thereto by an annular lock nut 54 threadably received at the top end of the module 50.
- the power supply unit of the invention is not shown in the drawing, but may be any suitable power supply which is able to be located adjacent the ice generating apparatus 24 such as at bolting points 38.
- the power supply unit is connected to the sensing means 42 which is in the form of a photo-optic sensing device which comprises a source of an infra red beam and a receiver of that infra red beam such as a photo transistor.
- the sensor will switch off the power supply.
- the heat generated within the heat sink 36 transfers through, the thermoelectric module 26 to the cold-side heat sink 30 and subsequently to the cooling surface 32.
- a thin layer of ice immediately adjacent to the cooling surface 32 begins to defrost until the ice block located on the cooling surface 32 is able to break away therefrom. This ice block will then float upwards towards the surface of the water in the cooling chamber 12. Once this ice block has moved away from the sensing means 42, the power supply will be turned back on by the sensor switch and the thermoelectric module will again begin operating to cool the cooling surface 32 and thus create another block of ice.
- a water cooler may be provided having any required external configuration or any required configuration for joining or sealing with a water bottle of any type.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92921812A EP0608327B1 (en) | 1991-10-22 | 1992-10-20 | Cooling system |
DE69221311T DE69221311T2 (en) | 1991-10-22 | 1992-10-20 | COOLING SYSTEM |
US08/211,878 US5513495A (en) | 1991-10-22 | 1992-10-20 | Cooling system and method for producing ice to cool a liquid |
JP5507289A JPH08500893A (en) | 1991-10-22 | 1992-10-20 | Cooling system |
AU28627/92A AU663738B2 (en) | 1991-10-22 | 1992-10-20 | Cooling system for drinking water |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPK9081 | 1991-10-22 | ||
AUPK908191 | 1991-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993008432A1 true WO1993008432A1 (en) | 1993-04-29 |
Family
ID=3775769
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1992/000560 WO1993008432A1 (en) | 1991-10-22 | 1992-10-20 | Cooling system |
PCT/AU1992/000566 WO1993008433A1 (en) | 1991-10-22 | 1992-10-22 | Water cooler |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1992/000566 WO1993008433A1 (en) | 1991-10-22 | 1992-10-22 | Water cooler |
Country Status (10)
Country | Link |
---|---|
US (1) | US5513495A (en) |
EP (1) | EP0608327B1 (en) |
JP (1) | JPH08500893A (en) |
AT (1) | ATE156256T1 (en) |
AU (1) | AU663738B2 (en) |
CA (1) | CA2121905C (en) |
DE (1) | DE69221311T2 (en) |
ES (1) | ES2108765T3 (en) |
WO (2) | WO1993008432A1 (en) |
ZA (1) | ZA928174B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501077A (en) * | 1994-05-27 | 1996-03-26 | Springwell Dispensers, Inc. | Thermoelectric water chiller |
US5560211A (en) * | 1995-05-22 | 1996-10-01 | Urus Industrial Corporation | Water cooler |
EP0777090A3 (en) * | 1995-11-30 | 1997-12-29 | Sapporo Breweries Ltd. | Beverage servers and their controlling methods |
US5862669A (en) * | 1996-02-15 | 1999-01-26 | Springwell Dispensers, Inc. | Thermoelectric water chiller |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPO582797A0 (en) * | 1997-03-24 | 1997-04-17 | Clapham, Jamie Paul | Water cooler |
US6119462A (en) * | 1998-03-23 | 2000-09-19 | Oasis Corporation | Water cooler with improved thermoelectric chiller system |
US6237345B1 (en) * | 1998-04-17 | 2001-05-29 | Home Pure L.L.C. | Water cooler and dispenser |
US6003318A (en) * | 1998-04-28 | 1999-12-21 | Oasis Corporation | Thermoelectric water cooler |
DE10048425A1 (en) * | 2000-09-19 | 2002-03-28 | Bsh Bosch Siemens Hausgeraete | System and method for forming pieces of ice |
AUPR429801A0 (en) * | 2001-04-09 | 2001-05-17 | Neverfail Springwater Limited | Water cooler |
USD463194S1 (en) | 2001-09-26 | 2002-09-24 | Oasis Corporation | Beverage cooler |
GB2433491A (en) * | 2005-12-20 | 2007-06-27 | Ebac Ltd | Chilled liquid dispenser |
JP3135012U (en) * | 2007-04-12 | 2007-08-30 | 元山科技工業股▲分▼有限公司 | Beverage feeder cooling module |
US8794014B2 (en) * | 2008-05-30 | 2014-08-05 | Whirlpool Corporation | Ice making in the refrigeration compartment using a cold plate |
US9562757B2 (en) | 2009-10-02 | 2017-02-07 | The Controls Group, Inc. | Removal of an accumulated frozen substance from a cooling unit |
US9657983B2 (en) * | 2013-08-26 | 2017-05-23 | Sinjin Enertec Co., Ltd. | Apparatus for defrosting evaporator in refrigeration system using infrared emitting diode sensor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4055053A (en) * | 1975-12-08 | 1977-10-25 | Elfving Thore M | Thermoelectric water cooler or ice freezer |
EP0050473A2 (en) * | 1980-10-14 | 1982-04-28 | Inventors & Investors, Inc. | Personalized cooling systems |
DE3044202A1 (en) * | 1980-11-24 | 1982-05-27 | Alfred Schneider KG, 7630 Lahr | METHOD AND DEVICE FOR PUTTING CRYSTALIZATION NUCKS INTO A LIQUID LATENT HEAT STORAGE MEDIUM |
US4727720A (en) * | 1986-04-21 | 1988-03-01 | Wernicki Paul F | Combination ice mold and ice extractor |
US4996847A (en) * | 1989-12-20 | 1991-03-05 | Melissa Zickler | Thermoelectric beverage cooler and dispenser |
Family Cites Families (15)
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US2572508A (en) * | 1940-03-18 | 1951-10-23 | Muffly Glenn | Ice maker and bottle cooler |
US3008299A (en) * | 1959-04-09 | 1961-11-14 | Carrier Corp | Thermoelectric water cooler |
US3250433A (en) * | 1964-08-21 | 1966-05-10 | Allen Electronics Inc | Liquid dispensing unit |
US3310953A (en) * | 1965-10-23 | 1967-03-28 | Joseph M Rait | Portable refrigerator for beverage containers and the like |
AU3417378A (en) * | 1977-03-18 | 1979-09-20 | Sherring G J | Cooling/heating unit |
US4627242A (en) * | 1984-04-19 | 1986-12-09 | Vapor Corporation | Thermoelectric cooler |
GB2188724B (en) * | 1986-04-03 | 1989-11-15 | King Seeley Thermos Co | Ice bin level sensor |
US4958505A (en) * | 1988-04-12 | 1990-09-25 | Schneider Metal Manufacturing Co. | Ice cooled beverage dispenser and method of making same |
US4866945A (en) * | 1988-08-31 | 1989-09-19 | Bender Richard S | Countertop water cooler |
US4913713A (en) * | 1989-04-04 | 1990-04-03 | Riclar International | Versatile countertop cooler |
GB2234802B (en) * | 1989-07-21 | 1992-10-28 | Marcellus Carolus Paul Simkens | Device for making ice cubes and method therefor |
US4993229A (en) * | 1990-05-31 | 1991-02-19 | Aqua-Form Inc. | Bottled water cooling unit |
IT1244433B (en) * | 1990-09-12 | 1994-07-15 | Castel Mac Spa | ELECTRONIC ICE LEVEL CONTROL DEVICE IN AN ICE COLLECTION CONTAINER FOR THE PRODUCTION OF ICE IN FLAKES |
US5072590A (en) * | 1991-02-11 | 1991-12-17 | Ebtech, Inc. | Bottled water chilling system |
AU2798592A (en) * | 1991-10-22 | 1993-05-21 | Australian Thermo Electrics Pty. Ltd. | Water cooler |
-
1992
- 1992-10-20 JP JP5507289A patent/JPH08500893A/en active Pending
- 1992-10-20 ES ES92921812T patent/ES2108765T3/en not_active Expired - Lifetime
- 1992-10-20 AU AU28627/92A patent/AU663738B2/en not_active Ceased
- 1992-10-20 DE DE69221311T patent/DE69221311T2/en not_active Expired - Fee Related
- 1992-10-20 WO PCT/AU1992/000560 patent/WO1993008432A1/en active IP Right Grant
- 1992-10-20 US US08/211,878 patent/US5513495A/en not_active Expired - Fee Related
- 1992-10-20 CA CA002121905A patent/CA2121905C/en not_active Expired - Fee Related
- 1992-10-20 EP EP92921812A patent/EP0608327B1/en not_active Expired - Lifetime
- 1992-10-20 AT AT92921812T patent/ATE156256T1/en not_active IP Right Cessation
- 1992-10-22 ZA ZA928174A patent/ZA928174B/en unknown
- 1992-10-22 WO PCT/AU1992/000566 patent/WO1993008433A1/en active Search and Examination
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4055053A (en) * | 1975-12-08 | 1977-10-25 | Elfving Thore M | Thermoelectric water cooler or ice freezer |
EP0050473A2 (en) * | 1980-10-14 | 1982-04-28 | Inventors & Investors, Inc. | Personalized cooling systems |
DE3044202A1 (en) * | 1980-11-24 | 1982-05-27 | Alfred Schneider KG, 7630 Lahr | METHOD AND DEVICE FOR PUTTING CRYSTALIZATION NUCKS INTO A LIQUID LATENT HEAT STORAGE MEDIUM |
US4727720A (en) * | 1986-04-21 | 1988-03-01 | Wernicki Paul F | Combination ice mold and ice extractor |
US4996847A (en) * | 1989-12-20 | 1991-03-05 | Melissa Zickler | Thermoelectric beverage cooler and dispenser |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501077A (en) * | 1994-05-27 | 1996-03-26 | Springwell Dispensers, Inc. | Thermoelectric water chiller |
US5560211A (en) * | 1995-05-22 | 1996-10-01 | Urus Industrial Corporation | Water cooler |
USRE37696E1 (en) * | 1995-05-22 | 2002-05-14 | Urus Industrial Corporation | Water cooler |
EP0777090A3 (en) * | 1995-11-30 | 1997-12-29 | Sapporo Breweries Ltd. | Beverage servers and their controlling methods |
US5862669A (en) * | 1996-02-15 | 1999-01-26 | Springwell Dispensers, Inc. | Thermoelectric water chiller |
US5884487A (en) * | 1996-02-15 | 1999-03-23 | Springwell Dispensers, Inc. | Thermoelectric water chiller with ice block |
Also Published As
Publication number | Publication date |
---|---|
ES2108765T3 (en) | 1998-01-01 |
CA2121905A1 (en) | 1993-04-29 |
DE69221311D1 (en) | 1997-09-04 |
JPH08500893A (en) | 1996-01-30 |
CA2121905C (en) | 1997-12-30 |
EP0608327B1 (en) | 1997-07-30 |
AU2862792A (en) | 1993-05-21 |
EP0608327A4 (en) | 1994-11-30 |
ATE156256T1 (en) | 1997-08-15 |
AU663738B2 (en) | 1995-10-19 |
DE69221311T2 (en) | 1998-03-05 |
ZA928174B (en) | 1993-07-20 |
EP0608327A1 (en) | 1994-08-03 |
US5513495A (en) | 1996-05-07 |
WO1993008433A1 (en) | 1993-04-29 |
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