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EP2205131B1 - Présentoir - Google Patents

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Publication number
EP2205131B1
EP2205131B1 EP07844978.2A EP07844978A EP2205131B1 EP 2205131 B1 EP2205131 B1 EP 2205131B1 EP 07844978 A EP07844978 A EP 07844978A EP 2205131 B1 EP2205131 B1 EP 2205131B1
Authority
EP
European Patent Office
Prior art keywords
case
compartment
fan
shelf
product
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.)
Not-in-force
Application number
EP07844978.2A
Other languages
German (de)
English (en)
Other versions
EP2205131A4 (fr
EP2205131A1 (fr
Inventor
Bertil Gunnar Iverlund
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.)
Carrier Corp
Original Assignee
Carrier 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 Carrier Corp filed Critical Carrier Corp
Publication of EP2205131A1 publication Critical patent/EP2205131A1/fr
Publication of EP2205131A4 publication Critical patent/EP2205131A4/fr
Application granted granted Critical
Publication of EP2205131B1 publication Critical patent/EP2205131B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A47F3/0456—Cases or cabinets of the counter type

Definitions

  • the disclosure relates to refrigerated cases. More particularly, the disclosure relates to service cases/merchandisers.
  • Self-service cases exist for consumers principally to access product.
  • a variety of self-service refrigerated case configurations exist, including: open front cases; open top cases; sliding front door cases; and hinged front door cases.
  • Distinct groups of cases exist for access principally by food service personnel. Many of these may have glass fronts to display product to consumers but provide principal or exclusive access from the rear by service personnel. Such cases may be used in various situations including: bakery situations; delicatessen situations; and butcher situations where it is desired for customers to see product but not have direct access.
  • Such cases include a stepped rear wall which provides a food preparation counter surface.
  • Such cases may also have sloping glass fronts (e.g., flat or curved glass panels rearwardly inclined).
  • the result of the stepped rear wall and sloping front wall is that the case interior may have a relatively deep lower/base portion and a relatively shallow upper portion.
  • a refrigerated display cabinet of this kind is disclosed in DE-A-2043161 .
  • the present invention provides a refrigerated service case as set forth in claim 1.
  • a second fan is positioned to drive a branch airflow through the upper portion of the compartment.
  • the case may further include a thermoelectric cooling unit.
  • the thermoelectric cooling unit may be positioned to cool product on the upper shelf.
  • the thermoelectric cooling unit may have an upper heat absorbing portion positioned to cool product on the upper shelf and a lower heat rejecting portion positioned to reject heat to air flowing along a portion of the air flowpath between the upper shelf and a lower shelf.
  • the second fan may be positioned to direct the branch airflow upward behind product on the upper shelf.
  • the case may be implemented as a reengineering of an existing case configuration or a remanufacturing of an existing case.
  • the invention also provides a method for operating the case, as set forth in claim 11, and a method for engineering the case, as set forth in claim 13.
  • FIGS. 1-3 show a service case 20.
  • the case 20 ( FIG. 2 ) extends from a first (e.g., left as viewed by a consumer facing the case) end 22 to a second (right) end 24.
  • the case has a front 26 and a rear 28.
  • the exemplary front comprises a rearwardly inclined, forwardly vertically convex, glass window 38 through which consumers can view product stored in the interior/compartment 40.
  • the window may extend from a lower end proximate a base 42 below the compartment.
  • the window may extend to an upper end.
  • the base 42 may contain portions of the refrigeration equipment (discussed below).
  • the exemplary rear is formed by a stepped wall structure including an intermediate counter 48.
  • the counter 48 has a food preparation surface 50.
  • a lower portion of the rear wall 52 may extend downward from an upper edge and at a rear edge of the food preparation counter to a lower edge.
  • the compartment 40 has an upper portion 54 of the lower portion 56.
  • An upper shelf 58 and a lower shelf 60 may respectively be positioned to hold product 62, 64 in the upper portion of the compartment and lower portion of the compartment.
  • the case is utilized in a delicatessen environment by service personnel standing behind the case.
  • Various meats, cheeses, and the like are displayed as the product 63, 64 on the shelves.
  • the food service personnel used the food preparation surface 50 to slice the products and bag or otherwise package them or prepare sandwiches and the like.
  • FIG. 4 shows a baseline case 68 wherein the refrigeration system's compressor 70 and heat rejection heat exchanger (e.g., gas cooler or condenser) 72 are located in the case base 42.
  • a fan 74 may force an airflow 506 across the condenser 72.
  • Alternative implementations may involve one or more of the refrigeration system components being remote. For example, a remote central compressor and condenser may deliver refrigerant to multiple display cases.
  • the expansion device 76 and heat absorption heat exchanger (e.g., evaporator) 78 are located in the compartment below the lower shelf 60.
  • a fan 80 is also positioned below the lower shelf to drive a recirculating airflow 508 along a flowpath 510.
  • the airflow 508 generally passes along a first leg 510-1 of the flowpath 510 below the lower shelf 60 and through the evaporator 78 so as to be cooled.
  • the airflow 508 then flows upward in front of a front surface 82 of the rear wall lower portion along a second leg 510-2.
  • the airflow 508 is deflected forward along a third leg 510-3.
  • This may continue as a fourth leg 510-4 approximately between the upper and lower compartment portions 54, 56.
  • a fifth leg 510-5 may return downward along a lower portion of the front wall (window 38) to rejoin the first leg 510-1.
  • the open nature of the flow 508 may cause some recirculative cooling in the upper portion 54 of the cabinet, this may be small compared to the cooling of the lower portion 56 (especially when combined with any convection). It may be advantageous to reengineer the baseline case 68 to provide enhanced airflow and cooling to the upper portion of the compartment.
  • the enhanced airflow and cooling may be achieved by the addition of one or more fans 100 (e.g., a side-to-side array of fans).
  • the cooling airflow 518 may proceed along a flowpath 520 having legs 520-1, 520-2, and 520-3 approximately similar to 510-1, 510-2, and 510-3, respectively.
  • the fan(s) 100 may be positioned to split air from the airflow 518 at the end or the leg 520-3.
  • the fan(s) 100 may drive a first branch flow 521 along a branch flowpath 522 while leaving a second branch flow 524 to flow approximately as in the baseline.
  • the fan(s) 100 may be positioned so that a first leg 522-1 of the branch flowpath 522 passes upward to a lower rear edge of the upper shelf 58.
  • a second leg 522-2 may then pass upward behind the product 62 on the upper shelf.
  • a third leg 522-3 may pass forward over the product 62 on the upper shelf.
  • a fourth leg 522-4 may then pass downward along an upper portion of an inside surface 110 of the front wall (window 38) to merge with the second branch 524 airflow (which has passed over/through product 64 on the lower shelf) and return combined along the leg 520-5 to the front of the leg 520-1.
  • FIG. 1 shows a window unit 128 having a pair of sliding windows (panes/panels) 130 extending upward from shelf brackets 132 behind the fan(s) 100 to define the rear boundary of the compartment upper portion 54 along the leg 522-2.
  • the exemplary windows act as a flow guide to help to guide the flow 521 along the leg 522 to better cool the product 62 on the upper shelf 58.
  • the exemplary windows 130 leave an open gap 140 between a forward edge of the counter 48 and a lower edge of the doors 130.
  • the exemplary gap 140 provides access for the counter service person to access product 64 along the lower shelf.
  • the gap 140 may be closable such as by sliding windows (either 130 or additional windows) or a removable cover.
  • a control system 150 (e.g., a micro controller) 150 ( FIG. 1 ) is provided to control operation of the case.
  • the controller 150 may receive user input from a user input device 152 (e.g., a control panel) to identify desired temperatures for the compartment upper portion 54 and compartment lower portion 56.
  • the controller 150 may receive temperature data from one or more sensors in the compartment (e.g., a sensor 154 in the upper portion 54 and a sensor 156 in a lower portion 56).
  • the controller 150 may also receive input from various sensors (not shown) directly along the refrigeration system (e.g., various refrigerant pressure and temperature sensors).
  • the controller thus controls the fan(s) 100 at least partially independently of the fan(s) 80 so that desired respective temperatures may be maintained in the compartment upper portion 54 and compartment lower portion 56.
  • basic control parameters could be preserved relative to the baseline with control of the fan(s) 100 superimposed.
  • the fan(s) 100 may be on-off modulated and/or speed modulated to maintain a desired temperature in the compartment upper portion 54 as measured by the sensor 154 while preserving the basic control method of the baseline.
  • a window unit may be present in the baseline and may be preserved or modified to the unit 128.
  • the window unit may be reoriented to bring its lower end forward with a corresponding shrinking of the windows.
  • An exemplary reorientation is by 5-40°.
  • the exemplary resulting window unit may be inclined an exemplary 5-50° off vertical.
  • FIG. 5 shows an alternate case 220 otherwise similar to the case 20 but including one or more thermoelectric cooling units 222 in the upper shelf.
  • the thermoelectric cooling unit has a heat absorbing section 224 and a heat rejecting section 226.
  • the exemplary heat absorbing section is positioned to directly cool product on the upper shelf (i.e., via conduction or convection rather than via a forced airflow).
  • FIGS. 6-8 show an upper shelf unit 230 having an exemplary five thermoelectric cooling units 222 arrayed from left-to-right.
  • the shelf unit 230 has a front edge 234, a rear edge 236, a left edge 238, and a right edge 240.
  • the shelf unit 230 has a top or upper surface 242 and a bottom or lower surface/underside 244.
  • the exemplary shelf unit 230 includes a central heat spreader core 246 (e.g., a metal plate (for example, aluminum)).
  • the plate 246 may serve to draw heat from the product 62 to the heat absorbing section 224.
  • An exemplary heat absorbing section 224 of each unit 222 is a contact plate (e.g., fastened (e.g. by screws) or bonded (e.g., by brazing or conductive epoxy)) to the plate 246.
  • the plate 246 may be encapsulated in insulation, with an upper insulating layer 250 and a lower insulating layer 252 shown.
  • Each exemplary contact plate 224 is secured in an associated gap in the layer 252.
  • the top surface 242 may be along the top surface of the layer 250.
  • the heat rejecting section 226 is a fin array behind the contact plate.
  • the unit 222 includes an exemplary fan 260 positioned to draw an airflow 550 over the heat rejecting section 226 along a flowpath 552.
  • the exemplary flowpath 552 branches off of and returns to the flow 524 along leg 520-4.
  • Exemplary power and local control electronics for the thermoelectric cooling unit 222 are not shown.
  • An insulated duct 270 may surround a portion of the flowpath 552 so as to keep warmed air exiting the heat rejecting section 226 away from the product 64 on the lower shelf therebelow.
  • thermoelectric cooling units 222 may warm the front wall and reduce condensation.
  • the controller 150 may similarly control operation of the thermoelectric cooling units 222 (e.g., via on-off duty-cycle modulation, power modulation, or the like). For example, they may be operated to supplement cooling provided by the branch airflow 521 if the branch airflow alone is ineffective to maintain the compartment upper portion 54 at a sufficiently low temperature (e.g., relative to the compartment lower portion 56 or relative to ambient temperature).
  • thermoelectric cooling unit(s) 222 could be present (e.g., added relative to a baseline) in the absence of the fan(s) 100.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (13)

  1. Armoire de service réfrigérée (20 ; 220) comprenant :
    une base (42) ;
    un compartiment réfrigéré (40) situé au-dessus de la base et comportant :
    une partie inférieure relativement profonde (56) ; et
    une partie supérieure relativement peu profonde (54) ;
    une paroi arrière le long du compartiment réfrigéré et comportant :
    une partie de paroi inférieure (52) le long de la partie inférieure du compartiment ; et
    un comptoir de préparation alimentaire (48) au-dessus de la partie inférieure de paroi ;
    un système de réfrigération comprenant :
    un échangeur de chaleur (78) à absorption de chaleur ; et
    un premier ventilateur (80) entraînant un flux d'air (518) le long d'une première voie d'écoulement d'air (520) à travers l'échangeur de chaleur (78) à absorption de chaleur, à remettre en circulation dans le compartiment ; et un moyen (100 ; 222) permettant d'améliorer le refroidissement du produit dans la partie supérieure (54) ;
    caractérisée en ce qu'elle comprend en outre :
    un contrôleur (150) couplé au moyen et configuré par au moins un logiciel et par au moins un matériel pour refroidir au moins en partie indépendamment la partie supérieure (54) de compartiment et la partie inférieure (56) de compartiment.
  2. Armoire (20 ; 220) selon la revendication 1, dans laquelle le moyen comprend :
    un deuxième ventilateur (100).
  3. Armoire (20 ; 220) selon la revendication 1, dans laquelle le deuxième ventilateur (100) est positionné pour entraîner un écoulement d'air dérivé (521) à travers la partie supérieure (54) du compartiment.
  4. Armoire (220) selon la revendication 1, 2 ou 3, comprenant en outre, ou dans laquelle ledit moyen comprend :
    une unité de refroidissement thermoélectrique (222).
  5. Armoire (220) selon la revendication 4 dans laquelle :
    l'unité de refroidissement thermoélectrique contient une partie (224) d'absorption de la chaleur positionnée pour refroidir le produit sur une étagère supérieure et une partie (226) de rejet de chaleur positionnée pour rejeter de la chaleur vers l'air (550) s'écoulant le long d'une dérivation (552) à partir de la voie d'écoulement d'air (520) entre l'étagère supérieure (58) et une étagère inférieure (60).
  6. Armoire (220) selon la revendication 5, dans laquelle :
    il existe une pluralité desdites unités de refroidissement thermoélectrique (222) ; et
    chacune desdites unités de refroidissement thermoélectrique (222) contient un troisième ventilateur positionné pour aspirer l'air (550) à travers la partie associée de rejet de chaleur (226).
  7. Armoire (20 ; 220) selon l'une quelconque des revendications 2 à 6, dans laquelle :
    le deuxième ventilateur (100) est positionné pour diriger l'écoulement d'air dérivé (521) vers le haut derrière le produit (62) sur une étagère supérieure (54).
  8. Armoire (20 ; 220) selon l'une quelconque des revendications 2 à 7, dans laquelle :
    le deuxième ventilateur (100) est positionné derrière le produit sur une étagère supérieure.
  9. Armoire (20 ; 220) selon la revendication 8, dans laquelle :
    le premier ventilateur (80) est positionné au-dessous du produit sur une étagère inférieure.
  10. Armoire (20 ; 220) selon l'une quelconque des revendications précédentes, comprenant en outre :
    un dispositif d'entrée (152), le contrôleur (150) étant configuré pour recevoir une entrée depuis le dispositif d'entrée pour obtenir une régulation au moins en partie indépendante de la température de la partie supérieure (54) de compartiment et de la partie inférieure (56) de compartiment.
  11. Procédé d'utilisation de l'armoire selon l'une quelconque des revendications précédentes, comprenant :
    l'utilisation du premier ventilateur ; et
    la modulation du premier moyen pendant qu'on utilise le premier ventilateur, de manière à réguler indépendamment au moins en partie le refroidissement de la partie supérieure (54) de compartiment par rapport à la partie inférieure (56) de compartiment.
  12. Procédé selon la revendication 11, comprenant :
    la réception de différentes températures d'entrée pour la partie supérieure (54) et pour la partie inférieure (56).
  13. Procédé d'ingénierie de l'armoire selon l'une quelconque des revendications 1 à 10 ou la mise aux normes d'une armoire de référence pour devenir l'armoire de l'une quelconque des revendications 1 à 10, comprenant :
    la réception d'une armoire initiale ou d'une configuration initiale d'armoire ; et
    l'ajout du premier moyen et du contrôleur.
EP07844978.2A 2007-11-08 2007-11-08 Présentoir Not-in-force EP2205131B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/084056 WO2009061318A1 (fr) 2007-11-08 2007-11-08 Présentoir

Publications (3)

Publication Number Publication Date
EP2205131A1 EP2205131A1 (fr) 2010-07-14
EP2205131A4 EP2205131A4 (fr) 2013-08-14
EP2205131B1 true EP2205131B1 (fr) 2014-09-03

Family

ID=40626034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07844978.2A Not-in-force EP2205131B1 (fr) 2007-11-08 2007-11-08 Présentoir

Country Status (2)

Country Link
EP (1) EP2205131B1 (fr)
WO (1) WO2009061318A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017292926B2 (en) 2016-07-08 2019-09-26 Hussmann Corporation Merchandiser
FR3071709B1 (fr) * 2017-10-03 2019-10-11 Y2I Finances Meuble d'exposition a froid ventile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043161A1 (de) * 1970-08-31 1972-03-02 Tiepolt H Anordnung zur Führung und Verteilung gasförmiger oder flüssiger Medien
DE7711392U1 (de) * 1977-04-12 1977-07-21 Ludwig Kiesel Ohg, 8500 Nuernberg Selbstbedienungs-tiefkuehlvitrine
GB2164133B (en) * 1984-07-25 1987-12-16 Sanden Corp Refrigerated storage cabinet
FR2609611A1 (fr) * 1986-12-26 1988-07-22 Tyler Refrigeration Gmbh Meuble presentoir de denrees a refrigeration par circulation forcee ou naturelle
US4750335A (en) * 1987-06-03 1988-06-14 Hill Refrigeration Corporation Anti-condensation means for glass front display cases
JPH07151450A (ja) * 1993-11-30 1995-06-16 Nakano Reiki Kk 冷蔵ショーケースの加湿構造
US5606863A (en) * 1995-07-17 1997-03-04 Kysor Industrial Corporation Glass front, anti-condensation refrigerated display
JP4737884B2 (ja) * 2001-08-07 2011-08-03 三洋電機株式会社 ショーケース

Also Published As

Publication number Publication date
EP2205131A4 (fr) 2013-08-14
WO2009061318A1 (fr) 2009-05-14
EP2205131A1 (fr) 2010-07-14

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