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Publication numberUS3263745 A
Publication typeGrant
Publication dateAug 2, 1966
Filing dateJun 13, 1963
Priority dateJun 13, 1963
Publication numberUS 3263745 A, US 3263745A, US-A-3263745, US3263745 A, US3263745A
InventorsHenry James
Original AssigneeEmhart Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Open-front refrigerated display case
US 3263745 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

g' 1966 HENRY 3,263,745

OPENFRONT RBFRGERATED DISPLAY CASE Fi1ed June 15 1963 2 Sheetssheet 1 AM ES HENRY INVENTOR' Aug. 2, 1966 HENRY OPENFRONT REFRGERATED DISPLAY CASE Filed June 13 2 SheetS-Sheet 2 INVENTOR ing where he temperature of the air is norInally fe1a tively high.

In the construction shown in I(. the invention is emp10yed in CInbination With 'tWO display cases 40- and 4 z Which are p0sitioned back to back A common Warm air duct means is emp10yed With a veftical 0rtion 44 extendin downwaTd between the cases froIn a oint adjacent the tops 4 0f the cases to lower opp0sitely directed horizonta1 portions 48 'and 50' The horiz0nta1 p0ftions of the Warm air duct are pfovided With outlet openings 5z and 54 adjacent the fronts Of the' Tespective cases A bwer 5 Serves to force relatively vvarm ai1 ffon1 above the case dOvvnvvad through the vertical poftion 44 and means Such as a damper 58 may be employed for contr011ing the alT1oun't of air discharged through either horizontal portion 48 0r 50' In this Way, a Single warm air duct n1eans may be emloyed With two display caseS. 1Oe0veT One case may be 0pefated at a lower temperature or in a dieTent manner and yet the aiSle temperatures in front of both cases can be Sllitably m0died 'to overc0fne excessive Spillage 0f c0ld air the reint0 In each of the forIns of the invention shown and de- Scribed, the air entering the Warn1 air duct means is dfawn from a point exterior to the display case and is 11I1Tefrig erated so that but little additiona1 heat need be added theret0 in 01 deT to eect the desi...red increase in temperature of the air in the Space or aisle in front Of the display case It is, Of course, possible to locate the ()utlet openings 32 32' and 32 at any Suitable p0int or p0ints a(- jacent the front of the display case 1Ievertheless, Such outlets are preferab1y'p0sitioned in or adjacent the 10Wer front Wall l() of the case and sefve t0 direct Warn1 air in a direction vvhich Will Seve to counteract the effect Of any cold or refrigerated ail` Which Inay spill over the upper edge lz 0f the lower front wall 10' 0f the display case 01 Ovv outward from the front access opening 14 0f the case.

It Will, thlls, be apparent that numerous changes in the form, construction and 10cation Of the VarIn air duct means may be made, and the vvarm Vail, vvaste heat or added heat utilized in raising the temperature Of the ail' may be derived from any Suitable or prefefred Sou'rce. In view thereof, it should be underst00d 'hat the paT- ticular e'mbodim!ents of the invention shovvn in the dravvings and described above are intended t0 be illustrative only and are not intended to limit the Scope of the invention` I clajm:

1- In a Tefrigerated dis lay case having a display space `therein, Said case having an insulated base, an insuated rear vvall, a top, a 10Wer front wall having the upper edge there0f Spaced from Sajd top and c00perating With Said top to dene a normally open access opening in the front of Said display case, and, means for refrigerating and ciT- culating air within said display spaoe, the con1bination of means for overcoming the effect of any spillage of Tefrigerated air from said access opening into the area in front of said case, c0mprising, duct nleans for nonrefrigerated air extending adjacent but on the exteriof of Said rear Wall and base Of the display case, Said duct nleans having an inlet opening located adjacent the top of the caSe and an Outlet opening located in front Of the case beneath the upper edge of Said10wer front Wall of the case, and means for circulating air at a temperature above the temperature of the air circulated through the display Spa0e thfough said duct means and int0 'the area in ffont of the display case.

z. In a refrigerated display case having a display Space therein, said case having an insulated base, an insulated rear wall, 21- to a loweT front Wall having the upper edge thereof spaced from Said top and c00perating With said t0p to denne a norInally open access 0pening in the front of said display case, and means for refpigerating and circulating air Within Said display Space, the c0mbination of Ine'ans for overcon1ing the eect of any spillage of refrgerated air from Said access opening int0 the area in front of said case, c0mprising duct means for nonrefrigerated air extending adjacent but on the exterior of Said rear Wall and baSe of the diSplay case said duct nleans having an inlet opening located adjacent The top of the case and an outlet opening 10cated in front 0f the case beneath the upper edge 0f said lovver ffont Wa11 0f the case, means for circulatingair through said duct means t0 the area in front of said display case, and means for heating the air circulated th0ugh Said duct n1eans 3, In con1bination vvith two open front Self service refri gefated display cases arranged in back to back felation Ineans for overcoming the effect of any Spi1lage of refrigerated air fr0Tn the open fronts of said display cases into the area adjacent thereto, comprising duct -means for n0nrefrigerated air having a portion extending vertica1ly between said cases and having horizonta11y extending p0rtions communicating With Said vertical p0rtion and terrninating in outlet openings adjacent the fronts of said cases, and meanS for cicu1ating nonrefrigerated air through Said duct means 4. The combination as Set forth in claifn 3 vvherein n1eans are rovided fol' contr011ing the amount Of ail oWing from said vertical portion to the horizonta1 portions of Said duct Ineans' Refeences Ced by the Examiner UNITED STATES PATENTS 1 781 S36 l-1/l930 Brown 624 Z 246 999 6/1941 1I0rrison 6Z4j4 x Z,706,387 4/ 19 swanson 62Zjj X 2,8,760 10/l98 Simons 6226 X Z 86Z 369 12/19S8 Simons 9836 X 3,0Zj,68l 3/1962 Booth 6226S X 3,082,612 3/1963 Beckwith 62ZS6 X

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1781536 *Dec 22, 1926Nov 11, 1930Servel IncRefrigeration
US2246999 *Aug 16, 1938Jun 24, 1941Morrison Willard LAir cooling and circulating device
US2706387 *Mar 2, 1953Apr 19, 1955Tyler Refrigeration CorpCondensation control on the outside of refrigerated cabinets
US2855760 *Oct 3, 1956Oct 14, 1958Edward W SimonsMethod and means for maintaining material at a predetermined temperature in an open compartment
US2862369 *Aug 30, 1956Dec 2, 1958Edward W SimonsAir conditioned display compartment and method
US3025681 *Aug 15, 1960Mar 20, 1962Booth John SMoisture controlled refrigerator openings
US3082612 *Feb 13, 1961Mar 26, 1963Dual Jet Refrigeration CompanyRefrigerated cabinet and defrosting means
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3759059 *Dec 30, 1971Sep 18, 1973Schaefer CorpRefrigerated display cabinet
US5201191 *Sep 6, 1991Apr 13, 1993Leggett & Platt, Inc.Refrigerated merchandiser
US5301517 *Jul 16, 1993Apr 12, 1994L&P Property Management CompanyRefrigerated shelf merchandiser
US5499513 *Mar 3, 1995Mar 19, 1996L&P Property Management CompanyRefrigerated shelf merchandiser
US5584192 *Mar 6, 1995Dec 17, 1996L&P Property Management CompanyRefrigerated shelf merchandiser
US6379240 *Apr 22, 1999Apr 30, 2002Halton OyAir circulation system for a refrigerated display case and method for ventilating a room space, hall space or a refrigerated division thereof having a refrigerated display case
US7107786Nov 12, 2004Sep 19, 2006Tecumseh Products CompanyApparatus for and method of venting hydrocarbon refrigerant leaks
US20130152616 *Sep 17, 2012Jun 20, 2013David TurnerAir Catching Apparatus for a Refrigerated Cabinet
US20140263126 *Mar 15, 2013Sep 18, 2014Hussmann CorporationUni-body merchandiser
EP1762159A1 *Aug 9, 2006Mar 14, 2007Johnson Controls - MC InternationalMethod and system for improving of the operation of refrigerated display cases
WO2007023194A1 *Oct 18, 2005Mar 1, 2007Frost Trol SaImproved heat recovery system which is intended for air-conditioning and to reduce the cold corridor effect
Classifications
U.S. Classification165/48.1, 62/255, 165/918, 62/249, 62/455
International ClassificationA47F3/04
Cooperative ClassificationA47F2003/046, Y10S165/918, A47F3/0447
European ClassificationA47F3/04B1A