EP1202008A2 - Wärmerückgewinnungsverfahren zur Klimatisierung und zur Verminderung des Kaltzug-Effekts - Google Patents

Wärmerückgewinnungsverfahren zur Klimatisierung und zur Verminderung des Kaltzug-Effekts Download PDF

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Publication number
EP1202008A2
EP1202008A2 EP01500170A EP01500170A EP1202008A2 EP 1202008 A2 EP1202008 A2 EP 1202008A2 EP 01500170 A EP01500170 A EP 01500170A EP 01500170 A EP01500170 A EP 01500170A EP 1202008 A2 EP1202008 A2 EP 1202008A2
Authority
EP
European Patent Office
Prior art keywords
air
heat
conditioning
reduction
recovery
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Withdrawn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
EP01500170A
Other languages
English (en)
French (fr)
Other versions
EP1202008A3 (de
Inventor
Roberto Nicolas Solsona Castillo
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.)
Frost-Trol Sa
Original Assignee
Frost-Trol Sa
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 Frost-Trol Sa filed Critical Frost-Trol Sa
Publication of EP1202008A2 publication Critical patent/EP1202008A2/de
Publication of EP1202008A3 publication Critical patent/EP1202008A3/de
Withdrawn legal-status Critical Current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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • 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

Definitions

  • the invention refers to a system for the recovery of heat for air-conditioning and reduction of the cold passage effect.
  • the system takes advantage of the heat given off during the process of condensation of the refrigerant of the condenser units belonging to the refrigerating circuits of the linear refrigerated display units (open vertical refrigerating cabinets) of stores where perishable food products are sold, in order to use this heat as air-conditioning and to eliminate the effect known as "cold passage", that occurs in the front of said linear refrigerated display units of vertical refrigerating cabinets.
  • the object of the invention is to use the heat produced and given off by the condenser units of refrigerating elements for air-conditioning and for the elimination of the so-called cold passage effect, as it has been stated above.
  • refrigerating cabinets designed exclusively for the selling of different products.
  • One of these types of refrigerating cabinets is the so-called open vertical refrigerating cabinets. They are refrigerators provided with racks and open in the front so that the buyer can have easy access to the merchandize. Due to their design and in order to be able to keep the enclosure of the racks of said cabinets at the desired refrigerating temperature, they are provided with an air curtain that delimits the environment of the store from the inside environment of said refrigerating cabinets.
  • This curtain at its outside surface is in contact with the air belonging to the store, for which reason the air curtain upon having a temperature colder than the temperature of the store absorbs part of the heat of the store, producing close to these linear refrigerated display units a local reduction of the environmental temperature of around five to ten degrees Kelvin, depending on the amount of refrigerating cabinets that form the corresponding linear refrigerated display units. This absorbed heat will be greater the larger the linear refrigerated display unit is, since this cooling is proportional to the cold density installed. The ratio is expressed between the refrigerating power removed from the refrigerating cabinets and the selling surface. This local reduction of the environmental temperature close to this type of refrigerating cabinets produces environmental discomfort to the buyer, since this passage is too cold and therefore customers tend to walk away from these passages and this produces a reduction of sales.
  • the condenser units are centralized in a machine room so that the heat of the condensers is removed to the outside of the store by means of conduits or else the condensers are located outside the store. In some cases this heat is used by channeling it again to the store by means of the air-conditioning system.
  • the invention proposes a system for the recovery of heat for air-conditioning and reduction of the cold passage effect.
  • the system of the invention is applicable to refrigerating cabinets designed to sell food products.
  • the system of the invention comprises in principle a condenser unit for each refrigerating cabinet that is installed in the top part thereof.
  • the condenser unit is located inside an immobilized box that comprises three different areas.
  • a first area where there is the air inlet in order to cool the condenser, which is provided with an interchangeable filter in order to facilitate the cleaning and maintenance thereof. Besides in this first area there is a low sound level compressor, aside from a liquid vessel or drum, as well as the remaining automatic devices for the adjustment of the refrigerating installation.
  • a second area connected with the preceding one by means of an intermediate opening in order to facilitate the passage of the air where the condenser itself is located.
  • a third area also connected with the preceding area where an exhaust element is located, such as a low pressure axial fan that is the one that facilitates the circulation of air, in such a way that in the end part of this third area there is an air outlet that is provided with a slat shutter that prevents the undesired return of any air stream.
  • an exhaust element such as a low pressure axial fan that is the one that facilitates the circulation of air, in such a way that in the end part of this third area there is an air outlet that is provided with a slat shutter that prevents the undesired return of any air stream.
  • the assembly of the condenser unit is fastened to the top part of the refrigerating cabinet by means of a bed assembled on some dampers in order to eliminate the possible vibrations that this unit transmits to the cabinet.
  • an air distributor whose purpose is to channel the air to the inside of the store or to the outside of the store depending on what is convenient and what is desired.
  • this distributor has an inlet for the air coming from the condenser unit and two outlets, one of them that connects with the inside of the store by means of an appropriate conduit and a second outlet that connects with the outside by means of a corresponding duct.
  • the distributor directs the hot air coming from the condenser unit towards the outside of the establishment whereas in the winter position the distributor directs the hot air coming from the condenser unit towards the inside of the store.
  • the operation of the distributor can be carried out manually and also by means of a motor with insertion of a switch that selects the summer position or the winter position at the user's will.
  • the operation of the distributor can be carried out automatically by including a thermostat, in such a way that depending on the temperature desired in the passage, the motor is actuated so that the distributor is automatically positioned in the summer or winter position.
  • This system also has the advantage that since the condenser unit is located in the top part of the cabinet, the tubing up to the condenser unit is very short, with the subsequent reduction of the load of refrigerant in the installation.
  • condenser unit (1) that is installed in the top part of some open refrigerating cabinets (2) located in stores or commercial establishments, cabinets that are open in the front and that include on their racks different food products to be sold to the public. These products are thus maintained perfectly preserved, at the same time that they are easily accessible to the public.
  • the condenser unit (1) is located inside a duly soundproofed box (4) that comprises in principle a front area, a center area and a rear area, all of them successively connected to each other.
  • the front area includes a compressor (5), a liquid vessel or drum (6), as well as the remaining automatic devices needed for the adjustment of the refrigerating installation.
  • the center area includes a condenser itself (7).
  • the rear area includes a low pressure axial fan (8) that facilitates the circulation of the air that enters through an inlet (9) of the box (4), said inlet being located in the front area and said air comes out through an outlet (10) of the cited box (4), said outlet being located in the area in correspondence with the axial fan (8).
  • This air stream goes through each area of the condenser unit (1), in such a way that upon passing through the center area, the air is heated due to the heat given off by the condenser (7), in such a way that the air comes outside the box (4) at a relatively hot temperature.
  • inlet (9) there is an interchangeable filter (11) in order to facilitate the cleaning and maintenance thereof, thus preventing the accumulation of dirt in the flaps of the condenser (7).
  • the outlet (10) includes a small slat shutter (12) that prevents the undesired return of air when the condenser unit (1) is not operating, preventing the inappropriate entry of other air streams coming from other condenser units or simply from the outside.
  • an air distributor (13) is installed following the condenser unit (1).
  • a rubber tube (14) that damps possible vibrations of the condenser unit (1) is inserted therein.
  • This distributor (13) of the air that flows through the outlet (10) of the condenser unit channels the hot air towards the outside of the establishment in the summer or towards the inside in winter, in both cases through some appropriate conduits (15) and (16) that originate in the distributor (13).
  • this distributor (13) includes an inlet (17) for the air coming from the condenser unit (1) and two outlets: a side one (18) connected to the conduit (15) that directs the air to the outside and a bottom outlet (19) connected to the conduit (16) that directs the air to the inside of the store with the insertion of some grilles (20).
  • Said conduit (16) is located in the rear part of the refrigerating cabinet (2) and ends in the cited grilles (20) located in the bottom part of the refrigerating cabinet (2).
  • the distributor (13) also includes a damper (21) that can take on two stable positions: one where it directs hot air essentially towards the inside of the store during the winter and the other one that directs this air essentially towards the outside of the store during the summer.
  • the damper (21) can be operated manually and also by a motor (22) connected thereto.
  • Said motor can be actuated by means of using a switch that selects the summer or winter position at the user's will. This actuation can also be carried out automatically by means of installing a thermostat, which depending on the temperature desired in the passage, actuates the motor so that the distributor is automatically positioned in the summer or winter position.
EP01500170A 2000-10-26 2001-07-05 Wärmerückgewinnungsverfahren zur Klimatisierung und zur Verminderung des Kaltzug-Effekts Withdrawn EP1202008A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200002583A ES2167280B1 (es) 2000-10-26 2000-10-26 Sistema de recuperacion de calor para climatizacion y reduccion del efecto pasillo frio.
ES200002583 2000-10-26

Publications (2)

Publication Number Publication Date
EP1202008A2 true EP1202008A2 (de) 2002-05-02
EP1202008A3 EP1202008A3 (de) 2003-05-02

Family

ID=8495422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01500170A Withdrawn EP1202008A3 (de) 2000-10-26 2001-07-05 Wärmerückgewinnungsverfahren zur Klimatisierung und zur Verminderung des Kaltzug-Effekts

Country Status (2)

Country Link
EP (1) EP1202008A3 (de)
ES (1) ES2167280B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1762159A1 (de) * 2005-09-12 2007-03-14 Johnson Controls - MC International Verfahren un Vorrichtung zur Verbesserung des Betriebs von Kühlmöbeln
JP2009506289A (ja) * 2005-08-25 2009-02-12 フロスト−トロル・ソシエダッド・アノニマ コールド廊下作用を低減するための空調用の改良型熱回収システム
DE102011101347A1 (de) * 2011-05-12 2012-11-15 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
DE102014009438A1 (de) * 2014-06-25 2015-12-31 Liebherr-Hausgeräte Lienz Gmbh Anordnung von Kühl- und/oder Gefriergeräten

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892324A (en) * 1955-05-31 1959-06-30 Lester K Quick Refrigeration system with heat reclaiming means
JPS5623649A (en) * 1980-07-28 1981-03-06 Sanyo Electric Co Ltd Air conditioner in supermarket
US4522040A (en) * 1982-09-17 1985-06-11 Hitachi, Ltd. Refrigerator
US5050398A (en) * 1990-09-04 1991-09-24 Specialty Equipment Companies, Inc. Ice making machine with remote vent
US5086627A (en) * 1990-11-19 1992-02-11 Margaret Platt Borgen Removable cooling unit for display case and method for using same
DE4114915A1 (de) * 1991-05-07 1992-11-12 Walter Kroll Verfahren und vorrichtung zur energie-einsparung bei gefriergeraeten bzw.: kaeltegeraet mit vorrichtung zur kuehlluftzufuhr
GB2339891A (en) * 1998-07-23 2000-02-09 Fischer Fritz Udo Refrigeration system having a duct for heated air

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5818581B2 (ja) * 1976-11-10 1983-04-13 三洋電機株式会社 冷凍ショ−ケ−スの熱回収装置
US4144720A (en) * 1977-04-25 1979-03-20 Tyler Refrigeration Corporation Air defrost system using secondary air band components
GB8623287D0 (en) * 1986-09-27 1986-10-29 Barker George & Co Ltd Refrigerated display cabinet
FR2728662A1 (fr) * 1994-12-23 1996-06-28 Bernet Louis Procede pour ameliorer le fonctionnement des meubles frigorifiques
JP2986421B2 (ja) * 1997-03-11 1999-12-06 サンデン株式会社 ショーケース
FI108609B (fi) * 1998-04-23 2002-02-28 Halton Oy Kylmätiskiin liittyvä ilmankiertojärjestelmä ja menetelmä ilmanvaihdossa kylmätiskillä/kylmätiskeillä varustetussa huone- tai hallitilassa tai hallitilan kylmäosastossa

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892324A (en) * 1955-05-31 1959-06-30 Lester K Quick Refrigeration system with heat reclaiming means
JPS5623649A (en) * 1980-07-28 1981-03-06 Sanyo Electric Co Ltd Air conditioner in supermarket
US4522040A (en) * 1982-09-17 1985-06-11 Hitachi, Ltd. Refrigerator
US5050398A (en) * 1990-09-04 1991-09-24 Specialty Equipment Companies, Inc. Ice making machine with remote vent
US5086627A (en) * 1990-11-19 1992-02-11 Margaret Platt Borgen Removable cooling unit for display case and method for using same
DE4114915A1 (de) * 1991-05-07 1992-11-12 Walter Kroll Verfahren und vorrichtung zur energie-einsparung bei gefriergeraeten bzw.: kaeltegeraet mit vorrichtung zur kuehlluftzufuhr
GB2339891A (en) * 1998-07-23 2000-02-09 Fischer Fritz Udo Refrigeration system having a duct for heated air

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 072 (M-068), 14 May 1981 (1981-05-14) & JP 56 023649 A (SANYO ELECTRIC CO LTD;OTHERS: 01), 6 March 1981 (1981-03-06) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009506289A (ja) * 2005-08-25 2009-02-12 フロスト−トロル・ソシエダッド・アノニマ コールド廊下作用を低減するための空調用の改良型熱回収システム
EP1762159A1 (de) * 2005-09-12 2007-03-14 Johnson Controls - MC International Verfahren un Vorrichtung zur Verbesserung des Betriebs von Kühlmöbeln
FR2890723A1 (fr) * 2005-09-12 2007-03-16 Johnson Controls Mc Internat Procede de destratification thermique d'une allee formee entre des meubles frigorifiques
DE102011101347A1 (de) * 2011-05-12 2012-11-15 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
DE102014009438A1 (de) * 2014-06-25 2015-12-31 Liebherr-Hausgeräte Lienz Gmbh Anordnung von Kühl- und/oder Gefriergeräten

Also Published As

Publication number Publication date
ES2167280B1 (es) 2003-06-01
ES2167280A1 (es) 2002-05-01
EP1202008A3 (de) 2003-05-02

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