EP1612491A2 - Refroidisseur de liquide pour système de climatisation - Google Patents

Refroidisseur de liquide pour système de climatisation Download PDF

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Publication number
EP1612491A2
EP1612491A2 EP05013908A EP05013908A EP1612491A2 EP 1612491 A2 EP1612491 A2 EP 1612491A2 EP 05013908 A EP05013908 A EP 05013908A EP 05013908 A EP05013908 A EP 05013908A EP 1612491 A2 EP1612491 A2 EP 1612491A2
Authority
EP
European Patent Office
Prior art keywords
chiller
exchanger
support frame
condenser
compressor
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.)
Withdrawn
Application number
EP05013908A
Other languages
German (de)
English (en)
Other versions
EP1612491A3 (fr
Inventor
Valerio Giordano Riello
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.)
Aermec SpA
Original Assignee
Aermec 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
Application filed by Aermec SpA filed Critical Aermec SpA
Publication of EP1612491A2 publication Critical patent/EP1612491A2/fr
Publication of EP1612491A3 publication Critical patent/EP1612491A3/fr
Withdrawn legal-status Critical Current

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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
    • F25D23/00—General constructional features
    • F25D23/003—General constructional features for cooling refrigerating machinery
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/12—Details or features not otherwise provided for transportable
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
    • F25B1/053—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • This invention relates to a liquid chiller, particularly but without limitation a water chiller, for air conditioning in domestic, industrial and commercial environments, such as workshops, stores and offices, of the type in which a compressor compresses a gas which, by evaporating in a suitable heat exchanger, cools the liquid which is pumped, circulated and delivered to the cooling equipment, wherefrom it comes at a higher temperature, after having extracted heat from the environments, in accordance with the preamble of claim 1.
  • liquid chillers particularly water chillers, for air conditioning systems are comprised of various units, including a compressor, heat exchangers, circulating pumps, filters, connection piping and water and gas lines, valves and electrical control and monitoring equipment.
  • the object of this invention is to obviate the above drawback by providing a liquid chiller, particularly a water chiller, for air conditioning systems, that can be carried to the installation site in a substantially assembled condition, ready for connection to the water circulation system, and allows the provision of systems operating with a variable cooling power.
  • a water chiller characterized in that its units are grouped and assembled on a single support frame, whose transverse dimension T is not larger than the transverse dimension of a doorway to a machine room, the compressor is of the centrifugal type and at least the heat exchanger acting as an evaporator is a plate-type exchanger, in accordance with the features of claim 1.
  • the chiller is provided in the form of a module generating a predetermined basic cooling power, said module being adapted for connection to other modules to obtain systems having a cooling power which is a multiple of the such basic cooling power.
  • the basic cooling power of a module is of about 280 kW.
  • numeral 1 generally denotes the support frame for the various units that form the chiller.
  • It has a box-like shape, with front uprights 2, rear uprights 2a, lower longitudinal crossbars 3 and upper longitudinal crossbars 3 a.
  • the rear uprights 2a are connected together by a plate 4, whereas the upper longitudinal crosspieces 3a are held together by transverse connecting members 5.
  • the fastening means are preferably traditional bolts and screws, such as those denoted by numeral 6, but may also include weldings, if desired.
  • the lower longitudinal crossbars 3 are connected by transverse members 7, which also have traditional height-adjustable support feet 8 attached thereto.
  • the overall transverse dimension T of the support frame 1, as substantially determined by the length of the transverse members 5 and 7 does not exceed 0.75 m, and is not larger than the traditional transverse dimension of a doorway to a machine room, which is typically 0.9 m.
  • a compressor preferably an oil-less centrifugal compressor denoted by numeral 9, is mounted to the transverse members 5, and is connected to an evaporator-exchanger 10 which is shown as a plate-type exchanger having a compact design.
  • the exchanger 10 has tubular connections 11 and 12 to the chilled water distribution circuit, not shown, which are both placed on the rear side of the support frame 1, i.e. on the plate 4.
  • connections 13 and 14 of the condenser exchanger 15 are also placed on the plate 4, next to the connections 11 and 12 of the evaporator exchanger 10.
  • the condenser exchanger 15 is also a plate-type exchanger and, like the evaporator exchanger 16, is placed within the box-like support frame formed by the uprights 2, 2a and the longitudinal crossbars 3 and 3a.
  • multiple equal chillers may be provided, i.e. as many chillers as required to achieve the desired cooling power without using complex and bulky piping arrangement.
  • each of the modules has such transverse dimensions as to allow passage thereof through the doorway to the room where they are designed to form the system, which typically has a width of about 0.9 m and a height of about 2 m.
  • the cabinet for the electrical and hydraulic controls of the chiller is positioned on the side of the frame 1 opposite to the plate 4.
  • Such cabinet generally denoted by numeral 16, is directly connected to the frame 1 by its bottom wall 17, and therefore is not in contact with the ground.
  • the door 18 to access the inside of the cabinet 16 is wholly accessible from the front side of the chiller.
  • the top side 19 of the cabinet is positioned at such a maximum height that it does not exceed the conventional height of about 2 m of the doorway, to allow the wholly assembled chiller to pass therethrough, no other part of said chiller exceeding in height said top side.
  • the exchangers 10 and 15 are placed on the support frame 1 in spacing relationship along the longitudinal axis of the support frame, to form a space, denoted by numeral 20, in which the additional components of the chiller are accommodated, particularly the pumps, the filters, the connection piping and the valves not specifically shown in Figure 1, but clearly recognizable by their conformations.
  • the chiller structure of the invention allows the chiller to be carried into the air conditioning system room in a substantially assembled condition, with no problems of handling and passage through the doorways and in a modular arrangement, so as to achieve the desired cooling power by connecting together a plurality of modules having equal basic powers or by disconnecting one or more modules when a lower power is required, thereby providing the highest flexibility to meet seasonal requirements.
  • the modular chiller of this invention provides high performances in terms of both delivered power and handling.
  • the chiller as described with reference to Figures 1 to 3 has the condenser exchanger 15 installed outside the support frame 1. Therefore, the chiller is composed of two separate units, i.e. an evaporating unit 21 and the condenser exchanger 15.
  • the evaporating unit 21 is usually installed in the machine room, whereas the condenser exchanger 15 may be installed in an open space, such as the roof of a building.
  • the evaporating unit 21 comprises the compressor 9, the evaporator exchanger 10, the control panel 16 and further components such as pumps, filters, connection piping, etc.
  • the condenser exchanger 15 is connected to the evaporating unit 21 by pipes 22, 23, usually made of copper, with coolant flowing therein.
  • the coolant In one of the pipes, e.g. pipe 22, the coolant is in an overheated vapor state, whereas in the other pipe, i.e. pipe 23, the coolant is in the undercooled state.
  • the coolant changes its state within the condenser exchanger 15.
  • the condenser exchanger 15 is provided in the form of a condenser exchanger having a fume extraction fan.
  • this solution provides the advantage of an easier maintenance, as the evaporating unit 21 can be readily accessed, and especially provides the advantage of not requiring system draining operations in Winter, as the evaporating unit 21 is installed in the machine room, that is in a closed space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP05013908A 2004-06-30 2005-06-28 Refroidisseur de liquide pour système de climatisation Withdrawn EP1612491A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20040317 ITMI20040317U1 (it) 2004-06-30 2004-06-30 Refrigeratore di liquido per impianti di condizionamento d'aria

Publications (2)

Publication Number Publication Date
EP1612491A2 true EP1612491A2 (fr) 2006-01-04
EP1612491A3 EP1612491A3 (fr) 2007-01-03

Family

ID=34982279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05013908A Withdrawn EP1612491A3 (fr) 2004-06-30 2005-06-28 Refroidisseur de liquide pour système de climatisation

Country Status (2)

Country Link
EP (1) EP1612491A3 (fr)
IT (1) ITMI20040317U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900168A (zh) * 2012-12-28 2014-07-02 苏州必信空调有限公司 过冷紧凑型空调机组及包括该机组的高层建筑的空调系统
CN103900169A (zh) * 2012-12-28 2014-07-02 苏州必信空调有限公司 过热紧凑型空调机组及包括该机组的高层建筑的空调系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739458A (en) * 1952-11-22 1956-03-27 Acme Ind Inc Heat pump system
US5839295A (en) * 1997-02-13 1998-11-24 Frontier Refrigeration And Air Conditioning Ltd. Refrigeration/heat pump module
US5848538A (en) * 1997-11-06 1998-12-15 American Standard Inc. Oil and refrigerant pump for centrifugal chiller
US20020017110A1 (en) * 2000-08-02 2002-02-14 Chiu Peng Chu Separated type air conditioner with evaporative condensing apparatus
US6679076B1 (en) * 2003-04-17 2004-01-20 American Standard International Inc. Centrifugal chiller with high voltage unit-mounted starters
WO2004063634A1 (fr) * 2003-01-15 2004-07-29 Oreste Bottaro Refroidisseur d'eau pour installation interne

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2739458A (en) * 1952-11-22 1956-03-27 Acme Ind Inc Heat pump system
US5839295A (en) * 1997-02-13 1998-11-24 Frontier Refrigeration And Air Conditioning Ltd. Refrigeration/heat pump module
US5848538A (en) * 1997-11-06 1998-12-15 American Standard Inc. Oil and refrigerant pump for centrifugal chiller
US20020017110A1 (en) * 2000-08-02 2002-02-14 Chiu Peng Chu Separated type air conditioner with evaporative condensing apparatus
WO2004063634A1 (fr) * 2003-01-15 2004-07-29 Oreste Bottaro Refroidisseur d'eau pour installation interne
US6679076B1 (en) * 2003-04-17 2004-01-20 American Standard International Inc. Centrifugal chiller with high voltage unit-mounted starters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103900168A (zh) * 2012-12-28 2014-07-02 苏州必信空调有限公司 过冷紧凑型空调机组及包括该机组的高层建筑的空调系统
CN103900169A (zh) * 2012-12-28 2014-07-02 苏州必信空调有限公司 过热紧凑型空调机组及包括该机组的高层建筑的空调系统

Also Published As

Publication number Publication date
EP1612491A3 (fr) 2007-01-03
ITMI20040317U1 (it) 2004-09-30

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