EP1547492A2 - Système modulaire de réfrigération - Google Patents

Système modulaire de réfrigération Download PDF

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Publication number
EP1547492A2
EP1547492A2 EP04257770A EP04257770A EP1547492A2 EP 1547492 A2 EP1547492 A2 EP 1547492A2 EP 04257770 A EP04257770 A EP 04257770A EP 04257770 A EP04257770 A EP 04257770A EP 1547492 A2 EP1547492 A2 EP 1547492A2
Authority
EP
European Patent Office
Prior art keywords
refrigeration unit
refrigeration
modular
zone
modular refrigeration
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Withdrawn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
EP04257770A
Other languages
German (de)
English (en)
Other versions
EP1547492A3 (fr
Inventor
Michael D. Grassmuck
Martin J. Duffy
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.)
Hussmann Corp
Original Assignee
Hussmann Corp
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 Hussmann Corp filed Critical Hussmann Corp
Publication of EP1547492A2 publication Critical patent/EP1547492A2/fr
Publication of EP1547492A3 publication Critical patent/EP1547492A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A47F3/0482—Details common to both closed and open types
    • 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

Definitions

  • This invention relates to a refrigeration system for a refrigerated merchandiser of the type used in retail stores, convenience stores, snack bars, and restaurants for storing and cooling food and/or beverage products.
  • refrigerated merchandisers have a refrigerated compartment or product display area that is accessible to a consumer through an open face of the merchandiser or through glass doors which may be hinged or which may slide for easy access to the display shelves positioned within the product display area.
  • the product display area is typically cooled by a refrigeration system that includes an evaporator assembly and a condenser assembly arranged in a closed circuit.
  • the evaporator assembly generally including an evaporator, fan, and expansion valve
  • the condenser assembly generally including a compressor and a condenser
  • one or more compressors may be positioned in a back room to compress the refrigerant, while one or more condensers may be positioned on the rooftop of the retail store to receive compressed, substantially vaporized refrigerant from the compressor and discharge pressurized, substantially liquid refrigerant to evaporators that are individually positioned in the merchandisers.
  • the pressurized, substantially liquid refrigerant is metered to the evaporator by the expansion valve.
  • the fan distributes incoming return air from the product display area through the evaporator, where heat exchange between the return air and the refrigerant occurs, to reintroduce cooled air into the product display area.
  • the refrigerant exits the evaporator in a substantially vaporized state and is drawn back into the compressor to repeat the refrigeration cycle.
  • the evaporator assembly is typically sized to provide the product display area of the merchandiser with a fixed refrigeration capacity.
  • the merchandiser may only be suited to store a narrow range of products, and dedicated merchandiser configurations may be required to store specific products.
  • a modular refrigeration system for use in cooling a product display area of a refrigerated merchandiser.
  • the refrigeration system comprises one or more modular refrigeration units that are positionable in an accessible compartment of the merchandiser and are capable of cooling at least a portion of the product display area of the merchandiser.
  • the modular refrigeration units can be easily installed into and removed from the accessible compartment.
  • the refrigeration units may also be interchangeable with one another.
  • a refrigerated merchandiser can include a case including a first accessible compartment and a second accessible compartment spaced from the first accessible compartment.
  • the refrigerated merchandiser can further include a first modular refrigeration unit configured to be installed into the first accessible compartment such that the first modular refrigeration unit is in fluid communication with a first refrigeration zone when installed in the first accessible compartment to maintain the first refrigeration zone at a first temperature.
  • the first modular refrigeration unit can include a first evaporator assembly and a first condenser assembly.
  • the refrigerated merchandiser can further include a second modular refrigeration unit configured to be installed into the second accessible compartment such that the second modular refrigeration unit is in fluid communication with a second refrigeration zone when installed in the second accessible compartment to maintain the second refrigeration zone at a second temperature.
  • the second modular refrigeration unit can include a second evaporator assembly and a second condenser assembly.
  • a method for operating a refrigerated merchandiser can include providing a first refrigerated zone in a case of the refrigerated merchandiser, and providing a second refrigerated zone in the case.
  • the method can further include removably positioning a first modular refrigeration unit in the refrigerated merchandiser such that the first modular refrigeration unit is in fluid communication with the first refrigerated zone.
  • the first modular refrigeration unit can include an evaporator assembly and a condenser assembly.
  • the method can further include maintaining the first refrigerated zone at a first temperature with the first modular refrigeration unit.
  • the method can further include removably positioning a second modular refrigeration unit in the refrigerated merchandiser such that the second modular refrigeration unit is in fluid communication with the second refrigerated zone.
  • the second modular refrigeration unit can include an evaporator assembly and a condenser assembly.
  • the method can further include maintaining the second refrigerated zone at a second temperature with the second modular refrigeration unit.
  • a refrigerated merchandiser including a case, and a first modular refrigeration unit removably coupled to the case in fluid communication with a first refrigeration zone to maintain the first refrigeration zone at a first temperature.
  • the first modular refrigeration unit can include an evaporator assembly and a condenser assembly.
  • the refrigerated merchandiser can further include a second modular refrigeration unit removably coupled to the case in fluid communication with a second refrigeration zone to maintain the second refrigeration zone at a second temperature.
  • the second modular refrigeration unit can include an evaporator assembly and a condenser assembly.
  • a modular refrigeration system comprising a refrigerated merchandiser 10 and a plurality of modular refrigeration units 14 that are removably coupled to the merchandiser 10.
  • the exemplary merchandiser 10 of FIG. 1 is configured to be positioned against a wall, the merchandiser 10 of the present invention may also include any of a number of different forms of merchandisers (e.g., an island merchandiser, a convertible merchandiser, a service merchandiser, and so forth).
  • the refrigerated merchandiser 10 includes a case 18 generally defining an interior rear wall 22 and an interior top wall 26, while each modular refrigeration unit 14, when coupled to the merchandiser 10, generally defines at least a portion of an interior bottom wall 30 of the case 18.
  • the area bounded by the interior bottom wall 30, interior rear wall 22, and the interior top wall 26 defines a refrigerated compartment, or a product display area 34, in which food and/or beverage products are stored on a plurality of shelves 38.
  • the case 18 includes an open front face to allow customers access to the food and/or beverages stored in the case 18.
  • the product display area 34 may be enclosed by hinged or sliding front door panels.
  • the case 18 also generally defines an exterior rear wall 40 adjacent the interior rear wall 22 and an exterior top wall 42 adjacent the interior top wall 26.
  • a rear flue 27 is defined between the interior and exterior rear walls 22, 40 to allow for a substantially vertical refrigerated airflow 28 throughout the rear flue 27.
  • An opening 29 into the rear flue 27 is defined between the interior and exterior rear walls toward the bottom of the merchandiser 10.
  • An upper flue 31 is defined between the interior and exterior top walls 26, 42 and is fluidly connected with and adjacent to the rear flue 27. The upper flue 31 allows for substantially horizontal airflow 32 throughout the upper flue 31.
  • the interior top wall 26 includes an opening 33 to communicate with the upper flue 31 and allow the airflow 32 in the upper flue 31 to be discharged from the upper flue 31 into the product display area 34.
  • the interior rear wall 22 includes a plurality of apertures 35 therein.
  • the apertures 35 may be positioned in groups along the height of the interior rear wall 22 to fluidly connect the product display area 34 and the rear flue 27.
  • the apertures 35 allow some of the refrigerated air of the airflow 28 in the rear flue 27 to exit the rear flue 27 and enter the product display area 34. Products located in the product display area 34 may then be cooled by the refrigerated air.
  • the remaining portion of the refrigerated airflow 28 that does not pass through the apertures 35 is routed vertically through the rear flue 27, and horizontally through the upper flue 31 before being discharged from the upper flue 31 via the opening 33 in the interior top wall 26. After being discharged from the opening 33 in the interior top wall 26, the refrigerated air moves downwardly along the open front face of the refrigerated merchandiser 10 to form an air curtain 36 over the open front face of the case 18.
  • a plurality of spaces in the bottom of the merchandiser 10 generally define a plurality of accessible compartments 46 capable of accommodating a single modular refrigeration unit 14.
  • the modular refrigeration units 14 are removably coupled with the merchandiser 10 via brackets 50 in each accessible compartment 46.
  • brackets 50 are positioned on opposing sides in each accessible compartment 46 to support the respective opposing sides of each modular refrigeration unit 14.
  • the brackets 50 may be configured in any of a number of conventional forms to inter-engage corresponding structure (not shown) on the modular refrigeration units 14.
  • the modular refrigeration units 14 may be coupled to their respective accessible compartments 46 via other methods known to those skilled in the art.
  • Each modular refrigeration unit 14 generally includes a housing 54 substantially enclosing the refrigeration components of the refrigeration system.
  • the housing 54 generally at least partially defines a lower flue 37 between a fan plenum 58 (see FIG. 3) of the housing 54 and a bottom wall 59 of the housing 54 through which the refrigerated air produced by the refrigeration components is allowed to move.
  • Each refrigeration unit 14 may also include a shelf 62 supported on the top portion of the housing 54 to support products thereon.
  • the lower flue 37 may also be at least partially defined between the shelf 62 and the fan plenum 58, such that incoming return air from the air curtain 36 may enter the lower flue 37 via one or more openings 39 in the front portion of the top shelf 62 or a gap between the front edge of the top shelf 62 and the housing 54 to be drawn into the housing 54.
  • a filter 64 may be positioned in the gap between the front edge of the top shelf 62 and the housing 54 or adjacent the one or more openings 39 in the top shelf 62 such that debris and/or dust may be filtered from the incoming return air from the air curtain 36.
  • the filter 64 may be configured in any of a number of different forms such that particulate debris entrained in the incoming return air is separated from the incoming return air, while the filtered incoming return air is allowed to pass through the filter 64.
  • cooled air discharged from the housing 54 may exit the lower flue 37 via a gap 68 between the rear edge of the top shelf 62 and the housing 54.
  • the lower flue 37 Upon coupling the modular refrigeration unit 14 and the merchandiser 10, the lower flue 37 is fluidly connected with the rear flue 27 via the gap 68 between the rear edge of the top shelf 62 and the housing 54, and into the rear flue 27 via the opening 29 in the rear flue 27.
  • the lower flue 37, the rear flue 27, and the upper flue 31 comprise an air passage 41 separate from the product display area 34.
  • Each modular refrigeration unit 14 includes refrigeration components, such as an evaporator assembly and a condenser assembly, supported by the housing 54.
  • the evaporator and condenser assemblies may be separated from each other by a dividing wall 72 in the housing 54.
  • the evaporator assembly may include an evaporator 80 and a motorized fan 81 to move air through the evaporator 80.
  • the evaporator 80 is positioned substantially horizontally in the discharge opening 66 of the housing 54.
  • the fan is positioned adjacent the fan plenum 58 to draw an airflow 43 through the intake opening 70.
  • the fan draws the airflow 43 into the housing 54 such that the airflow 43 is upwardly re-directed by a bottom wall 59 of the housing 54 to flow horizontally through the evaporator 80 for cooling.
  • the evaporator 80 may be oriented substantially vertically in the discharge opening 66 such that the airflow 43 is caused to travel a different path (e.g., vertically) to exit the housing 54.
  • the evaporator 80 may extend above the upper portions of the housing 54, such that a notch is required in the case 18 to allow clearance for the evaporator 80 when inserting the modular refrigeration unit 14 into the accessible compartment 46.
  • the housing 54 may then include an upstanding panel to complement, or "fill in” the notch in the case 18 when the modular refrigeration unit 14 is inserted into the accessible compartment 46.
  • the evaporator assembly may also include an expansion valve to provide the modular refrigeration unit 14 with a desired refrigeration capacity.
  • the condenser assembly may include a compressor 84, a motorized fan (not shown), and a condenser 88.
  • the compressor 84 may be mounted to the housing 54 through vibration damping mounts.
  • the condenser 88 may be mounted to the housing 54 through a support tray, and the fan may be mounted to the condenser 88.
  • the condenser assembly may also include a receiver (not shown) in which to store liquid refrigerant.
  • the fan may generate an airflow through the condenser 88 in any of a number of different directions. In the illustrated construction, the fan may generate an airflow moving from side to side of the housing 54 or from front to back of the housing 54.
  • the condenser 88 can be fluid cooled by, for example, a glycol solution provided by a central fluid distribution system, which supplies cooling fluid to each of the modular refrigeration units 14.
  • cooling lines of the condenser unit can be coupled to the central fluid distribution system when the modular refrigeration unit 14 is installed into the refrigerated merchandiser 10.
  • Refrigerant may be circulated in a closed circuit between the evaporator assembly and the condenser assembly, leaving the evaporator as a low-pressure gas for compression by the compressor. From the compressor 84, the refrigerant may be discharged through the condenser 88, in which the refrigerant is substantially condensed to a high-pressure liquid before being fed to the evaporator assembly by an expansion valve.
  • the modular refrigeration units 14 may be powered using line power.
  • the merchandiser 10 may include a power distribution system (not shown) to distribute power from a single source of line power (e.g., a power cord) to the one or more modular refrigeration units 14.
  • the power distribution system may include electrical connectors (e.g., conventional quick-release electrical connectors, not shown) positioned in the accessible compartments 46 that are configured to engage mating electrical connectors (not shown) coupled to the individual modular refrigeration units 14.
  • the electrical connectors coupled to the individual modular refrigeration units 14 may be electrically connected to one or more of the refrigeration components (e.g., the compressor 84) to provide line power distributed by the power distribution system.
  • the modular refrigeration units 14 are self-contained, a skilled technician may not be required to install and/or remove the modular refrigeration unit 14 from the merchandiser 10. Rather, if repairs are required of a particular modular refrigeration unit 14, it may be removed from the merchandiser 10 by an employee of the retail store in which the merchandiser 10 is used, and shipped to a repair facility for repair by a skilled technician. As a result, the costs associated with maintaining the merchandiser 10 may be reduced compared to a conventional merchandiser.
  • Each modular refrigeration unit 14 may be independently configured to provide a desired refrigeration capacity.
  • the plurality of modular refrigeration units 14 may provide the product display area 34 with a plurality of different refrigeration zones.
  • a refrigeration zone may be considered a portion of the product display area 34 that is maintained at a different temperature than an adjacent portion of the product display area 34.
  • four modular refrigeration units 14 are shown that could potentially be configured to provide the product display area 34 with four different refrigeration zones in which to store products.
  • the modular refrigeration units 14 are interchangeable with one another, such that the refrigeration zones in the product display area 34 may be re-configured by interchanging one modular refrigeration unit 14 for another. This allows the merchandiser 10 to be tailored to the products to be stored therein, as opposed to conventional merchandisers, which are custom-built to store a particular range of products.
  • Each modular refrigeration unit 14 may be constructed having a pre-selected refrigeration capacity.
  • each modular refrigeration unit 14 may include user-manipulatable controls (not shown) accessible to an operator to vary the refrigeration capacity of the modular refrigeration unit 14.
  • user-manipulatable controls may be configured to adjust a temperature level of the modular refrigeration unit 14, which, in turn, may adjust the capacity of the compressor.
  • the user manipulatable controls may be located in a front panel 78 of each refrigeration unit 14.
  • a display window 82 on the front panel may display the temperature on which the refrigeration unit 14 is set. Additionally, the user manipulatable controls may be located within the display window 82.
  • a plurality of dividing walls 74 may also be positioned in the rear flue 27 and/or the upper flue 31 of the merchandiser 10 to fluidly separate the rear flue 27 and/or the upper flue 31 into a plurality of rear flues 27 and/or upper flues 31 associated with the plurality of modular refrigeration units 14.
  • the refrigerated airflow from each modular refrigeration unit 14 may be maintained within its associated rear flue 27 and/or upper flue 31 before being discharged into the product display area 34.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Packages (AREA)
EP04257770A 2003-12-15 2004-12-14 Système modulaire de réfrigération Withdrawn EP1547492A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52955603P 2003-12-15 2003-12-15
US529556 2003-12-15

Publications (2)

Publication Number Publication Date
EP1547492A2 true EP1547492A2 (fr) 2005-06-29
EP1547492A3 EP1547492A3 (fr) 2005-07-13

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EP04257770A Withdrawn EP1547492A3 (fr) 2003-12-15 2004-12-14 Système modulaire de réfrigération

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US (1) US20050126196A1 (fr)
EP (1) EP1547492A3 (fr)

Cited By (6)

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WO2006087007A1 (fr) * 2005-02-18 2006-08-24 Carrier Corporation Unite d’affichage a refrigeration transcritique
EP2092861A1 (fr) 2008-02-20 2009-08-26 Carrier Corporation Meuble de vente
WO2011162731A2 (fr) 2010-06-22 2011-12-29 Klimasan Klima Sanayi Ve Tic.A.S. Unité de réfrigération portative du type à cassette
EP2447636A1 (fr) 2007-09-12 2012-05-02 Whirlpool S.A. Module de réfrigération et système de réfrigération
CN103747709A (zh) * 2011-09-02 2014-04-23 开利公司 冷藏销售家具
WO2022165577A1 (fr) 2021-02-04 2022-08-11 Nidec Global Appliance Brasil Ltda. Cartouche de réfrigération

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EP2989936B1 (fr) * 2013-10-10 2018-07-18 Heatcraft Refrigeration Products LLC Systèmes de réfrigération modulaire
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US9814326B2 (en) * 2014-08-26 2017-11-14 Hill Phoenix, Inc. Refrigeration system having a common air plenum
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CN107853929A (zh) * 2017-12-05 2018-03-30 珠海市经典电子有限公司 一种生鲜食品售卖保鲜的方法和设备
CN108426410A (zh) * 2018-03-23 2018-08-21 深圳市中集冷链科技有限公司 用于模块化组合冷箱的冷源模块
EP4007880A4 (fr) * 2019-08-01 2023-07-26 Mars, Incorporated Présentoir de marchandises servant à afficher, réfrigérer et distribuer des récipients d'un produit congelé
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Publication number Priority date Publication date Assignee Title
WO2006087007A1 (fr) * 2005-02-18 2006-08-24 Carrier Corporation Unite d’affichage a refrigeration transcritique
EP2447636A1 (fr) 2007-09-12 2012-05-02 Whirlpool S.A. Module de réfrigération et système de réfrigération
EP2092861A1 (fr) 2008-02-20 2009-08-26 Carrier Corporation Meuble de vente
WO2011162731A2 (fr) 2010-06-22 2011-12-29 Klimasan Klima Sanayi Ve Tic.A.S. Unité de réfrigération portative du type à cassette
CN103747709A (zh) * 2011-09-02 2014-04-23 开利公司 冷藏销售家具
CN103747709B (zh) * 2011-09-02 2016-08-31 开利公司 冷藏销售家具
WO2022165577A1 (fr) 2021-02-04 2022-08-11 Nidec Global Appliance Brasil Ltda. Cartouche de réfrigération

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Publication number Publication date
EP1547492A3 (fr) 2005-07-13
US20050126196A1 (en) 2005-06-16

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