WO2013075198A1 - Chambre réfrigérée à évaporateur comprenant des ailettes spécifiques - Google Patents

Chambre réfrigérée à évaporateur comprenant des ailettes spécifiques Download PDF

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Publication number
WO2013075198A1
WO2013075198A1 PCT/BR2012/000478 BR2012000478W WO2013075198A1 WO 2013075198 A1 WO2013075198 A1 WO 2013075198A1 BR 2012000478 W BR2012000478 W BR 2012000478W WO 2013075198 A1 WO2013075198 A1 WO 2013075198A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
wall
refrigerated chamber
multifaceted
refrigerated
Prior art date
Application number
PCT/BR2012/000478
Other languages
English (en)
Inventor
Guilherme Borges Ribeiro
Luciana Wasnievski da SILVA
Original Assignee
Whirpool S.A.
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 Whirpool S.A. filed Critical Whirpool S.A.
Publication of WO2013075198A1 publication Critical patent/WO2013075198A1/fr

Links

Classifications

    • 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
    • F28D1/00—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means

Definitions

  • the present invention refers to a refrigerated chamber and, in especial, it refers to a refrigerated chamber comprising a proper refrigeration system.
  • the instantly revealed refrigerated chamber which is capable of achieving low temperatures, is free of any thawing system.
  • refrigeration systems are traditionally composed of at least one compressor, at least one condenser, at least one expanding element, and at least one evaporator. These elements are normally arranged in a closed- loop system and, within such system, it circulates a refrigerant fluid that is responsible for the heat transfer with the environment to be refrigerated. It is further noted that the current refrigeration systems further have at least one ventilation source, which is responsible for circulating the air within the environment to be refrigerated.
  • the thermal efficiency of the current refrigeration systems is determined by several factors, and the majority of factors is intrinsically related to the assembly of the elements that compose the refrigeration systems. Another factor that is potentially relevant to the thermal efficiency of a refrigeration system is related to the volume of the environment to be refrigerated. In this sense, refrigerated chambers of a big internal volume (such as, for example, frigorific refrigerators) require a greater power of their refrigeration system. On the other hand, refrigerated chambers of small internal volume (such as, for example, refrigerated chambers for transporting tissues and organs) require a lower power of their refrigeration system.
  • thawing systems associated with refrigeration systems of "low temperatures".
  • the conventional thawing systems are fundamentally composed of electrical resistances arranged next to the elements that are inclined to freeze when subjected to such low temperatures.
  • a conventional thawing system comprises at least one electrical resistance placed next to (or along) the evaporator of the refrigeration system.
  • the current thawing systems have several negative aspects, such as, for example, the physical size thereof and the electrical power consumption.
  • the thawing systems are particularly incapable of being associated with refrigeration systems of "low temperatures" for movable and small- sized refrigerated chambers.
  • Part of such incapability, as can be foreseen, is related to the electrical power consumption of the thawing system, since it is fed by electrical batteries of non-prolonged useful life.
  • one fundamental aspect of movable refrigerated chambers is related to the reduced sizes thereof, wherein the insertion of thawing systems may influence, in a negative manner, such necessity.
  • the current prior art is further composed of special models of evaporators, which are theoretically immunes from freezing (even when subjected to "low temperatures").
  • one of the objectives of the present invention is the provision of a refrigerated chamber whose refrigeration system is simultaneously free of thawing systems and free of occasional problems caused by freezing their components.
  • the instantly revealed refrigerated chamber which is composed of a refrigeration system (having a proper source of electrical supply) fundamentally comprising at least one compressor, at least one condenser, at least one expanding element, and at least one evaporator.
  • said at least one evaporator comprises at least two pipeline segments which are separated one from the other by at least one spacing element.
  • Each spacing element is composed of an internal circular wall and an external multifaceted wall, wherein said external multifaceted wall is separated from the internal circular wall by at least one radial wall.
  • the pipeline segments of the evaporator are arranged in the interior of the internal circular wall of the at least one spacing element.
  • the air flow to be refrigerated is forced toward the evaporator, in the direction of the faces of the external multifaceted walls.
  • the external multifaceted wall of the spacing element has a hexagonal perimeter and it is separated from the internal circular wall by six radial walls.
  • Figure 1 illustrates a preferable design of the evaporator of the refrigeration system of the refrigerated chamber
  • Figure 2 illustrates a first extended detail of the evaporator of the refrigeration system of the refrigerated chamber
  • Figure 3 illustrates a second extended detail of the evaporator of the refrigeration system of the refrigerated chamber.
  • an especially movable and substantially small refrigerated chamber which is responsible for super freezing, for a temporary period, portable refrigeration systems, such as, for example: coolers for automotive vehicles or coolers for leisure use (picnics).
  • the instantly provided refrigerated chamber has a proper refrigeration system, which is fundamentally composed of at least one compressor, at least one condenser, at least one expanding element, and at least one evaporator 1.
  • the compressor that integrates the above-mentioned refrigeration system is preferably a miniature linear compressor.
  • each pipeline segment 2 is connected to another pipeline segment 2.
  • the pipeline segments 2 are arranged in pairs and in parallel, enabling the separation of two pipeline segments 2 (especially those in parallel) by a plurality of spacing elements 3.
  • each spacing element 3 is composed of an internal circular wall 31 and an external multifaceted wall 32, which are separated one from the other by radial wall 33.
  • the external multifaceted wall 32 of the spacing element 3 has a hexagonal perimeter and it is separated from the internal circular wall 31 (of the cited spacing element 3) by six radial walls 33.
  • the pipeline segments 2 are arranged in the interior of the internal circular wall 31 of the spacing elements 3. This differentiated assembly is responsible for two aspects of great importance: pipeline segments 2 are spaced apart, in a standard manner; the spacing elements 3 and the evaporator 1 have their surfaces of heat transfer dislocated and amplified.
  • the standard spacing between the pipeline segments 2 enable the refrigerated chamber to be homogeneously refrigerated, as the air flow F will be equally cooled, since there is no "area" of thermal concentration (which are normally defined by pipeline segments that are differently spaced apart). It shall be mentioned that the air flow F will be preferably cooled and forced toward the evaporator 1 , in the direction of the faces of the external multifaceted walls 32.
  • the preferable surface of heat transfer by air flow is defined by the proper circular surface of the pipeline segments and by the extended surfaces thereof.
  • the preferable surface of air flow, and, consequently, of heat transfer is dislocated from the circular surface of the pipelines segments 2 in the direction of the external multifaceted walls 32 and radial walls 33.
  • the spacing elements 3 (of a single evaporator 1 ), once axially aligned, may present different outside diameters (fundamentally defined by the length of the radial walls 33), besides the possibility of the same being aligned, in a different manner, considering the radial point of view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne une chambre réfrigérée et, plus particulièrement, une chambre réfrigérée comprenant un système de réfrigération approprié qui comporte au moins un compresseur, au moins un condenseur, au moins un élément d'expansion, et au moins un évaporateur (1), lequel comprend au moins deux segments de conduite (2), séparés l'un de l'autre par au moins un élément d'espacement (3). Chaque élément d'espacement (3) est composé d'une paroi circulaire interne (31) et d'une paroi externe à facettes multiples (32), ladite paroi externe à facettes multiples (32) étant séparée de la paroi circulaire interne (31) par au moins une paroi radiale (33).
PCT/BR2012/000478 2011-11-26 2012-11-26 Chambre réfrigérée à évaporateur comprenant des ailettes spécifiques WO2013075198A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRMU9102333-5 2011-11-26
BRMU9102333 BRMU9102333U2 (pt) 2011-12-07 2011-12-07 Câmara refrigerada

Publications (1)

Publication Number Publication Date
WO2013075198A1 true WO2013075198A1 (fr) 2013-05-30

Family

ID=48468926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2012/000478 WO2013075198A1 (fr) 2011-11-26 2012-11-26 Chambre réfrigérée à évaporateur comprenant des ailettes spécifiques

Country Status (2)

Country Link
BR (1) BRMU9102333U2 (fr)
WO (1) WO2013075198A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996631A1 (fr) * 2012-10-08 2014-04-11 Commissariat Energie Atomique Echangeur thermique pour systeme de stockage thermique
FR3032031A1 (fr) * 2015-01-26 2016-07-29 Valeo Systemes Thermiques Batterie thermique a materiau a changement de phase encapsule.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778610A (en) * 1953-03-11 1957-01-22 Griscom Russell Co Catalyst finned tubing and method of making
JPS5646993A (en) * 1979-09-27 1981-04-28 Kenji Tanaka Heat-exchanger
WO1988006260A1 (fr) * 1987-02-17 1988-08-25 Hydrotherm Australia Pty. Ltd. Construction de convecteur/radiateur
DE4306952A1 (de) * 1993-03-05 1994-09-08 Zl Cryo Technik Gmbh Industrie Verdampferprofil für Cryoverdampfer
US5606869A (en) * 1996-04-08 1997-03-04 Joo; Sung I. Cylindrical ice cube maker
US5749242A (en) 1997-03-24 1998-05-12 Mowery; Timothy W. Evaporator for an ice making machine
EP1712855A2 (fr) * 2005-04-13 2006-10-18 Nomura S.r.l. Système pour la réfrigération de denrées périssables
WO2008047096A1 (fr) * 2006-10-16 2008-04-24 Sustainable Engine Systems Ltd Échangeur de chaleur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778610A (en) * 1953-03-11 1957-01-22 Griscom Russell Co Catalyst finned tubing and method of making
JPS5646993A (en) * 1979-09-27 1981-04-28 Kenji Tanaka Heat-exchanger
WO1988006260A1 (fr) * 1987-02-17 1988-08-25 Hydrotherm Australia Pty. Ltd. Construction de convecteur/radiateur
DE4306952A1 (de) * 1993-03-05 1994-09-08 Zl Cryo Technik Gmbh Industrie Verdampferprofil für Cryoverdampfer
US5606869A (en) * 1996-04-08 1997-03-04 Joo; Sung I. Cylindrical ice cube maker
US5749242A (en) 1997-03-24 1998-05-12 Mowery; Timothy W. Evaporator for an ice making machine
EP1712855A2 (fr) * 2005-04-13 2006-10-18 Nomura S.r.l. Système pour la réfrigération de denrées périssables
WO2008047096A1 (fr) * 2006-10-16 2008-04-24 Sustainable Engine Systems Ltd Échangeur de chaleur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996631A1 (fr) * 2012-10-08 2014-04-11 Commissariat Energie Atomique Echangeur thermique pour systeme de stockage thermique
FR3032031A1 (fr) * 2015-01-26 2016-07-29 Valeo Systemes Thermiques Batterie thermique a materiau a changement de phase encapsule.
WO2016120283A1 (fr) * 2015-01-26 2016-08-04 Valeo Systemes Thermiques Batterie thermique à matériau à changement de phase encapsulé
US10746481B2 (en) 2015-01-26 2020-08-18 Valeo Systemes Thermiques Thermal battery with encapsulated phase-change material

Also Published As

Publication number Publication date
BRMU9102333U2 (pt) 2013-11-12

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