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
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B39/00—Evaporators; Condensers
  • F25B39/04—Condensers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
  • F24D17/00—Domestic hot-water supply systems
  • F24D17/02—Domestic hot-water supply systems using heat pumps
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
  • F24F1/0007—Indoor units, e.g. fan coil units
  • F24F1/00077—Indoor units, e.g. fan coil units receiving heat exchange fluid entering and leaving the unit as a liquid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
  • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
  • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
  • F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
  • F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
• • 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
  • F25B2339/00—Details of evaporators; Details of condensers
  • F25B2339/04—Details of condensers
  • F25B2339/041—Details of condensers of evaporative condensers
• • 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
  • F25B2339/00—Details of evaporators; Details of condensers
  • F25B2339/04—Details of condensers
  • F25B2339/047—Water-cooled condensers
• • 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
  • F25B40/00—Subcoolers, desuperheaters or superheaters
  • F25B40/04—Desuperheaters

Definitions

• the present invention relates to a highly energy- efficient water cooler for simple internal installation.
• Known water coolers are used both for air conditioning units and for various applications requiring a heat treatment by means of cooling water as heat-carrying fluid (for instance industrial processes, labs, elec- tromedical appliances, instrument cooling, food industry, etc . ) .
• Air condensed coolers do not require any water consumption for their operation, since condensation heat is wholly transferred to air.
• the basic principle underlying the operation of most coolers is the cooling cycle by compression of saturated steam, which basically requires the use of a compressor, a condenser, an evaporator and a lamination element.
• Water coolers based on the principle of low pressure steam absorption by a concentrated solution have a small portion of the global market .
• cooling compressors can be used in a cooler, such as for instance:
• Heat exchangers used for transferring heat flow from cooling medium are basically tube sheet or braze- welded sheet exchangers .
• the first ones have a higher operating reliability, above all in case of polluting or smearing substances in the hydraulic circuit or in treated water.
• the second ones have better performances in relation to their size.
• Heat exchange batteries used for transferring heat from cooling medium to air and vice versa comprise copper tubes coated with aluminum wings increasing heat transmission surface.
• Fans for carrying sufficiently large air flow rates for subtracting (cooling cycle) or releasing (heating cycle) heat are basically of two types:
• Centrifugal fans these a Vogellic appliances suck air through a shaped mouthpiece arranged on fan center . Air is carried outside the impeller by the centrifugal force generated by the rotation of said fan. By using a convenient screw conveyor, which can increase its dynamic component, the air flow is pushed towards the outlet. Centrifugal fans are generally used for coolers placed within buildings. As a matter of fact, thanks to the static and dynamic discharge head of these ventilating units it is possible to carry out canalizations for conveying air outside.
• the technical task underlying the present invention is to solve the drawbacks of the state of the art.
• the present invention aims at solving the problems involving installation and high water consumption due to air condensed and water condensed coolers, respectively.
• FIG. 1 shows a sectioned view of a water cooler according to the present invention
• FIG. 2 schematically shows an example of installation of a water cooler with two pipes and corresponding holes in a wall
• FIG. 3 shows a second example of installation of a water cooler, the outlet of the pipes being located on an appliance side fastened to the wall;
• FIG. 4 shows a view as in Figure 1, referring to a variant of the water cooler.
• the layout section shown in Figure 1 helps to give a clearer description of the present invention.
• the water cooler globally referred to with number 20, comprises a frame 2 to which a cooling compressor 1 is fastened.
• a cooling compressor 1 Through an intake tube 3 the cooling medium is sent to an evaporative condenser 4, which is also integral with the frame 2.
• the water to be evaporated on the condenser is taken by a pump 5 from the tank or basin 6 and through the tube 7 and the dispenser 8 it is sprayed onto the evaporative condenser 4.
• the cooling medium expands in the capillary tube or lamination valve 9. It is further provided for an evaporator 10 in which water to be sent into the closed circuit supplying terminal air conditioning units is cooled.
• a fan 12 ventilates the evaporative condenser 4. Humidity- saturated air is let out through the pipe 13. The air getting through the evaporative condenser is taken outside through the pipe 14.
• a chassis 15 to be fastened to the frame 2 encloses in -one structure the whole cooling appliance 20.
• the water contained in the basin 6 placed under the evaporative condenser 4 can be periodically changed. Water drainage occurs through a siphon 16 which is actuated when the level is increased by means of a loading valve. It is thus possible to avoid the use of expensive motorized or electromagnetic valves and the operation of the cooler 20 becomes more reliable.
• FIG 2 shows a typical installation of the cooler 20 with pipes and their corresponding holes in the wall 19, which are made behind the appliance 20 according to the present invention.
• This example also shows two grids 17 preventing large foreign bodies from entering the pipes 13 and 14.
• Figure 3 shows a second installation with the outlet of pipes 13, 14 on a side of the appliance 20 fastened to the wall 19.
• Figure 4 shows a pattern as in Figure 1, though with the addition of a water condenser 18 upstream from the evaporative condenser 4 for producing hot water for sanitary use.
• this appliance 20 condensation heat can be transferred into a water tank for sanitary use. This means that whenever the cooler 20 is used for air conditioning purposes, hot water for sanitary use is produced almost free.
• the present invention can be integrated with a common boiler for producing hot water for heating purposes and hot water for sanitary use. This integration can be carried out also within the same chassis, thus obtaining one appliance.
• the main technical solution that enabled to solve the technical task disclosed above has been the application of the principle of evaporative condensation in a single-block cooler for internal installation.
• the operating principle of the evaporative condenser is based on heat transfer through water change of state from liquid to steam. The amount of energy required for this change is, as is generally known, quite high (650 W. pro kg) . Thus, with the use of a small amount of water high heat transfers are obtained.
• the technology of evaporative condensation has been known for years, but it has always been applied to large units, in the field of air conditioning and of industrial cooling. Further uses have involved the field of stand-alone portable air conditioners. In appliances for centralized systems, evaporative condensers are used instead of the more widespread evaporative towers, provided that tubes for cooling medium circulation are not too complex and involve too great installation problems.
• the present invention allows water coolers supplying quite a relevant number of air conditioning terminals (houses, offices, hotels, public spaces in general) to be installed inside, requiring only two small holes for communication with outside. This feature enables to install these appliances almost as if they were boilers. As a matter of fact, no cooling connections will be required, and above all it will not be necessary to arrange any other device outside.
• the exploitation of evaporative condensation enables to highly reduce air flows and the size of coolers with respect to coolers exploiting air condensation. Air flow rate for the operation of small coolers with evaporative condensation (4-10 KW of cooling power) for independent domestic use can circulate in pipes with a small diameter (100-200 mm) and an easy positioning.
• the holes required for communication with outside can be easily made by a common core boring drill. Water consumption sinks dramatically to values that can be accepted in all geographical area (12-25 liters/hour) .
• the size of these new coolers will be small and however compatible with the installation inside common houses or residential buildings, as occurs for other appliances such as boilers or water heaters. Hydraulic connections will enable an easy and rapid coupling with the thermohydraulic system.
• the new coolers can also be mounted as one chassis together with a wall boiler, thus creating a complete, stand-alone unit for producing hot and cold water.
• the invention has important advantages .
• the cooler for simplified internal installation according to the present invention provides an extremely high flexibility of use and can meet almost all needs of internal positioning and greatly simplify installation.
• the invention enables to obtain an arrangement of inlet and outlet pipes that is always optimal for any type of installation.
• the invention enables to obtain a cooler with a simple structure and an ' easy construction, which thanks to the possibility of making appliances with a small size depending on their cooling power, allows to greatly reduce manufacturing and storing costs .
• the invention thus conceived is subject to several changes and variants, all of which fall within the inventive idea characterizing it. Furthermore, all details can be replaced by technically equivalent element and any size, depending on needs, can be used.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=32697288

Family Applications (1)

Country Status (3)

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Citations (3)

Family Cites Families (8)

• 2003
  • 2003-01-15 IT IT000002A patent/ITTN20030002A1/it unknown
• 2004
  • 2004-01-13 EP EP04701667A patent/EP1588103A1/de not_active Withdrawn
  • 2004-01-13 WO PCT/IT2004/000006 patent/WO2004063634A1/en active Application Filing
• 2009
  • 2009-01-28 IT IT000003U patent/ITBS20090003U1/it unknown

Patent Citations (3)

Non-Patent Citations (1)

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