EP3171098A1 - Cooling system for cabinets and cooling cabinet by forced air - Google Patents

Cooling system for cabinets and cooling cabinet by forced air Download PDF

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Publication number
EP3171098A1
EP3171098A1 EP16198687.2A EP16198687A EP3171098A1 EP 3171098 A1 EP3171098 A1 EP 3171098A1 EP 16198687 A EP16198687 A EP 16198687A EP 3171098 A1 EP3171098 A1 EP 3171098A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cabinet
region
air
cabinets
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Withdrawn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
EP16198687.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gerson HEINZLE
Marcelo Christêllo Nazário
Marcio Roberto Thiessen
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.)
Whirlpool SA
Original Assignee
Whirlpool 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 Whirlpool SA filed Critical Whirlpool SA
Publication of EP3171098A1 publication Critical patent/EP3171098A1/en
Withdrawn legal-status Critical Current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
    • 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
    • A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
    • 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
    • F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers

Definitions

  • the present invention describes a cooling system for cabinets and cooling cabinet by forced air.
  • the present invention lies in the fields of thermodynamic systems and cooling cabinets.
  • Traditional cooling cabinets uses an axial fan which sucks the air through the bottom of the cabinet and discharges cold, by walls of the bottom shelves and top. Some versions also discharge a portion of air from the front upper part, forming an air curtain.
  • the heat exchanger is mounted, usually at the bottom of the cabinet inside an air duct. Depending on the configuration and application of this case, the heat exchanger can operate with direct expansion cooling or a secondary fluid, where, in both cases, the cooling system is arranged remotely.
  • the cooling system is mounted directly to the cabinet.
  • the cabinet allows a greater degree of freedom regarding the installation of the same, it does not depend on prior infrastructure for the office of connection to remote cooling system. It is understood by direct mounting to the cabinet the installation of multiple independent components and, following their interconnection, so that it is no longer possible to remove the cooling unit without the need to remove part or all of cooling charge.
  • the concept of direct cooling unit is more efficient and significantly reduces the cooling charge.
  • the cooling system fails, the entire cabinet is compromised because it presents difficulty and slowness for removal or installation of a new refrigeration unit, implying a high time with the cabinet out of operation.
  • the present invention aims to solve the listed problems in the art from a size of the cooling system and reduced weight by using a suitable venting means of the cold side, with a horizontal vent stream, allowing also the application of direct ventilation in the cabinet or in air ducts, in order to reduce the internal useful volume occupied for the installation of said system in a refrigerated cabinet.
  • the present invention provides a cooling system for cabinets comprising:
  • the present invention provides a refrigeration cabinet by forced air adapted to receive at least one cooling system as defined above wherein:
  • the present invention provides a cooling system for refrigerated environment comprising:
  • the common inventive concept to all the claimed protection contexts refers to the use of a cooling system in refrigerated cabinets, more specifically, in cooling cabinets by forced air, allowing a horizontal air flow, using a means of ventilating comprising a fan (8) proper, and allow reversal of the direction of air flow through the positioning system. It also allows the direct application in the cabinet or in air ducts, as operating characteristics or design of the cabinet.
  • the present invention provides a cooling system, which can be seen in Figures 1 , 2 or 3 , to be installed in refrigerated cabinets, to maintain an appropriate temperature within said cabinet for the product kept in the same.
  • a cooling system for a hot region (HR) and a cold region (CR) in the hot region (HR) is defined comprising the components which have a temperature rise at the time of working, and the cold region (RF) region defined by providing the air under conditions of low temperatures, responsible for cooling the inner region (IR) of the cabinet.
  • a refrigerated cabinet an environment for the storage of products or any type of object that needs to be cooled to an appropriate temperature.
  • shelves or cabinets air forced available in grocery stores that store refrigerated products, or frozen, for which it must maintain proper product temperature to prevent the same from becoming unusable.
  • the offices listed in this invention may be of the modular type, that is, the cabinet is associative with other cases of the same type, or different from operating together.
  • the hot area (HR) disposed external to the refrigerated cabinet is composed of a cooling compressor assembly and condensing cooling media, where the process involved occurs by conventional means.
  • the cooling may be any fluid capable of being regulated compressed and condensed in the process.
  • the cooling used in the present invention is a natural cooling R-290, but not limited to this.
  • the cooling compressor set used in the present invention comprises at least one compressor (2) and at least one fan to the compressor (3), this is not necessarily required.
  • the compressor (2) has the primary function to accomplish the compression of cooling for further cooling process, promoting the pressure differential for the system operation, while the compressor fan (3) is used to ensure air insufflating to said compressor (2) and/or condenser.
  • means condensing cooling can be understood by any component capable of performing exchange of the high pressure side of the heat and allowing condensation of the cooling, by heat exchange with a fluid which can be, for example, air, water or any other fluid that is provided by the structure of the installed product, such as a capacitor (11) water or air.
  • a fluid which can be, for example, air, water or any other fluid that is provided by the structure of the installed product, such as a capacitor (11) water or air.
  • the cold region (CR) arranged inside the cooled cabinet comprises a heat exchanger (13), venting means air inlet (14) and air outlet (15).
  • a heat exchanger 13
  • venting means air inlet 14
  • air outlet 15
  • the air heated by the products stored in the cabinet, heated area (HA) is cooled and sent to the insufflation region's cabinet, cold region (CR), cooling the region of interest of the cabinet, internal region (IR), as can be seen in figure 4 .
  • the means for ventilating the cold region (CR) comprises a fan (8) and the tangential air deflectors (7) where the air exits tangentially to the axis of said fan (8).
  • the tangential fan (8) allows a reduction in size of the cooling system proposed in the present invention, resulting in the fact that the space that the cold region (CR) occupies the internal volume of the cabinet is reduced.
  • the venting means comprises a fan (8) of axial type, wherein said axial fan (8) is used to depth with the cold region (CR) penetrates the inside of the cabinet is larger as necessarily requires a space to direct air to the heat exchangers (13).
  • the depth dimension is reduced to at most the width of the fan impeller or from the heat exchanger (13), whichever is greater. This configuration allows the performance of the refrigeration system is maintained, when compared to systems using fans of the axial type.
  • the said tangential fan (8) has the function of moving the return air cabinet, i.e. the hot air through the evaporator for cooling and its supply to the cabinet, delivering cold air. Also, to enable the generation of vortices that maximize and direct air tangential fan insufflation (8), are used air deflectors (7).
  • the heat exchanger (13) arranged in the system is defined by a serpentine displayed adjacently along the length of the tangential fan (8).
  • the coil (13) is arranged parallel to the tangential fan (8), running all along its length. This configuration reduces the air velocity through the heat exchanger (13), which reduces the pressure loss between the inlet pressure and air outlet in said heat exchanger.
  • axial heat exchanger (13) is defined by serpentine arranged in a region opposite to the region of installing said axial fan (8).
  • venting means both the blower (8) tangentially when the ventilator (8) axially, is arranged in the cooling cabinet structure, which thus does not belong to the cooling unit assembly i.e., the refrigeration unit is provided without the venting means.
  • Figure 4 shows an arrangement of the cooling system proposed in the present invention in a refrigerated cabinet, which it is seen that the system mounting region is able to provide the cold region (CR) being disposed in a region cooling cabinet, i.e. the part where the desired products are stored, where it is cooled. And thus, the hot region (HR) being arranged in an insulated cabinet region, preventing the heat produced by the operation of the components to be transferred to the cold region (CR). For this, the hot region (HR) and cold region (CR) are separated by a thermal insulator (12) being arranged externally of the cabinet.
  • a thermal insulator (12) being arranged externally of the cabinet.
  • the insulating medium used in the invention can be EPS (expanded polystyrene), whose thermal conductivity is around 0.033 W/mK, PU (Polyurethane), whose thermal conductivity is around 0.02 W/mK or other insulating elements not listed.
  • the system is mounted on the refrigerated cabinet via a mounting region, which comprises a base (4) and the supports of the base (5).
  • the base (4) ensures the system structure and the insulator housing (12) between the cold regions (CR) and hot (HR), and enable mounting components thereon.
  • the base support (5) allows the mounting of the refrigeration system to the cabinet, and allows the association of a sealing member such as a gasket at the interface between the system and the cabinet, and acoustically isolating heat.
  • the sealing element is installed around the interface between the case and the proposed system, avoiding physical contact with the metal parts, and prevent cold air leakage to the outside or entry of insects and dust.
  • the air intakes (14) disposed in the cold region (CR) are responsible for allowing air to enter the heated region (HA) of the cabinet, which air is hot, so that it is cooled and forwarded to the inner region (IR) of the cabinet through the air vents (15).
  • the air inlet (14) and the air outlet (15) are intermediated by the heat exchanger (13) and the fan (8) allowing horizontal ventilation.
  • the concept of horizontal ventilation is defined by the fact that the air flow moves horizontally within the environment to which the system is applied, for example, in a cooling cabinet.
  • the ventilating means enables the direction of air flow is defined according to system setup, in which the direction is determined by the position which the proposed system is installed.
  • the direction of air flow is set with variations by 180 °.
  • a condensates tray (9) which acts as an air duct in the heat exchanger (13) and allows the collection of defrost water, avoiding dripping office. This fact implies that the system allows the circulation of air flow in both directions, by simply reversing the refrigeration unit and the drain connection of readjustment.
  • the air deflectors (9a) of the tray can provide an adjustable air outlet angle being adaptable to the installation environment.
  • the present invention also provides a refrigeration cabinet by forced air adapted to receive the proposed cooling system described herein, where the arrangements are shown in Figures 4 and 5 .
  • the case comprises an opening region for the insertion of the proposed cooling system in order to facilitate installation of the refrigeration unit.
  • the system is then set in said cabinet cooling air forced through mounting region contained in the system itself, wherein the base support (5) allows the insertion of fasteners for coupling the system to the cabinet.
  • assembly of the system is defined by the air inlet (14) of the system facing the heated region (HA) of the cabinet, or to an opening of the cooling cabinet capable of providing access to the heated region (HA), such as an insufflation duct.
  • the air outlet (15) faces the cooled area (CR) of the refrigeration cabinet or to an opening of a refrigerating cabinet capable of providing access to the cold region (CR), so that, the cold air is blown into the inner region (IR) of the cooling cabinet, doing it directly.
  • Another way to perform the cold supply air in the inner region (IR) of the cooling cabinet is engaging said cooling system air ducts arranged in the top of the cooling cabinet (TG), allowing the provision of cooled air to a compartment single or a modular office.
  • air outlet (15) is engaged wholly or partly to the ventilation ducts, and can provide cold air insufflating the inner region (IR) of the cabinet.
  • the forced air cabinet proposed in the present invention is associative the at least one second cooling cabinet, and may be the same or different designs, where all forced air cabinets associated share one or more cooling units.
  • the total capacity of the cooling unit cooling is appropriate the sum of the thermal demand of all cabinets associated with the assembly, once the set of associated cabinets can share more than one refrigeration unit when in operation.
  • the present invention enables the cooling cabinet with a small-sized cooling system which occupies little internal volume of the cabinet, in addition to a low weight, ease of installation of the same and provides a circulation of air flow in both directions in a horizontal ventilation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Compressor (AREA)
EP16198687.2A 2015-11-18 2016-11-14 Cooling system for cabinets and cooling cabinet by forced air Withdrawn EP3171098A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR102015028999A BR102015028999A2 (pt) 2015-11-18 2015-11-18 sistema de refrigeração para gabinetes e gabinete de refrigeração por ar forçado

Publications (1)

Publication Number Publication Date
EP3171098A1 true EP3171098A1 (en) 2017-05-24

Family

ID=57288299

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Application Number Title Priority Date Filing Date
EP16198687.2A Withdrawn EP3171098A1 (en) 2015-11-18 2016-11-14 Cooling system for cabinets and cooling cabinet by forced air

Country Status (6)

Country Link
US (1) US20170135499A1 (pt)
EP (1) EP3171098A1 (pt)
JP (1) JP2017138088A (pt)
CN (1) CN106798432A (pt)
BR (1) BR102015028999A2 (pt)
MX (1) MX2016015154A (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200092605A (ko) * 2019-01-25 2020-08-04 엘지전자 주식회사 공기조화기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914927A (en) * 1954-12-16 1959-12-01 Sebastien S Corhanidis Detachable refrigerating unit
US5199273A (en) * 1990-09-28 1993-04-06 The Manitowoc Company, Inc. Reach-in cooler with interchangeable refrigerator and freezer systems
US20040139763A1 (en) * 2003-01-17 2004-07-22 Jeong Gi Joong Refrigerator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01141163A (ja) * 1986-02-11 1989-06-02 Alsthom Atlantique Sa 機関車の流体冷却器用及び／又は加減抵抗器用換気装置
JPH11264647A (ja) * 1998-03-17 1999-09-28 Sanyo Electric Co Ltd 蓄冷剤凍結庫
US6874331B2 (en) * 2002-05-17 2005-04-05 Manitowoc Foodservice Companies, Inc. Device and method for creating a horizontal air curtain for a cooler
US7246504B2 (en) * 2003-11-05 2007-07-24 Hoshizaki Denki Co., Ltd. Method of manufacturing refrigerated repositories and sales management system for refrigerated storage
BRPI0703622A2 (pt) * 2007-09-12 2009-04-28 Whirlpool Sa màdulo de refrigeraÇço e sistema de refrigeraÇço
US9310121B2 (en) * 2011-10-19 2016-04-12 Thermo Fisher Scientific (Asheville) Llc High performance refrigerator having sacrificial evaporator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2914927A (en) * 1954-12-16 1959-12-01 Sebastien S Corhanidis Detachable refrigerating unit
US5199273A (en) * 1990-09-28 1993-04-06 The Manitowoc Company, Inc. Reach-in cooler with interchangeable refrigerator and freezer systems
US20040139763A1 (en) * 2003-01-17 2004-07-22 Jeong Gi Joong Refrigerator

Also Published As

Publication number Publication date
US20170135499A1 (en) 2017-05-18
BR102015028999A2 (pt) 2017-05-23
MX2016015154A (es) 2018-05-16
CN106798432A (zh) 2017-06-06
JP2017138088A (ja) 2017-08-10

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