Grocery store air conditioning system having drop-down diffuser

Details Grocery store air conditioning system having drop-down diffuser Grocery store air conditioning system having drop-down diffuser

1989-12-06

1991-03-26

Joyce, Harold

62255, 98 4015, F24F 13062

Patent

active

050019686

ABSTRACT:
An air conditioning system for a grocery store having refrigerated food displays along certain aisles of the store includes a plurality of ceiling mounted air outlet diffuser units. A plurality of the units are positioned substantially above the aisles adjacent the refrigerated food displays. Each diffuser unit is positioned above the aisle adjacent the refrigerated food displays and is constructed so as to provide a downward flow of conditioned air into the store and over an extended area of the aisle in a manner so that shoppers receive conditioned air free of drafts while heavy, cool, stagnant air lying adjacent the refrigerated food displays is induced upwardly into upper regions of the store. Each diffuser unit has a housing with a flared air exit mouth which includes an outwardly extending arcuate surface to define a rounded outlet mouth thereat so that some horizontal discharge of air always is provided. A tubular air passageway within the housing includes an annular air passageway therebetween. A plurality of vanes are positioned in the annular passageway for producing rotational, highly turbulent currents of air flowing from the passageway. A plug-like valve controls the volume of air passing through the tubular air passageway and controls the flow pattern of the vertically directed currents of air. Both the rounded air exit mouth and the lower end of the annular air passageway extend below the store ceiling a predetermined distance so as to avoid air flowing from the annular passageway outwardly along the face of the ceiling and creating an undesirable coanda effect.

REFERENCES:
patent: 2207201 (1940-07-01), Kurth
patent: 2848934 (1958-08-01), Allander
patent: 3240145 (1966-03-01), Lambert
patent: 3503320 (1970-03-01), Geromet
patent: 3824909 (1974-07-01), Horneff et al.
patent: 3854386 (1974-12-01), Hedrick
patent: 3906846 (1975-09-01), Day
patent: 4078476 (1978-03-01), Widerby
patent: 4109564 (1978-08-01), Widerby
patent: 4191543 (1980-03-01), Peters
patent: 4259898 (1981-04-01), Finkelstein et al.
patent: 4655806 (1987-05-01), Martin, Sr.
patent: 4693176 (1987-09-01), Deeg et al.

Affiliated with

Also associated with

Rating

Grocery store air conditioning system having drop-down diffuser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Grocery store air conditioning system having drop-down diffuser , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grocery store air conditioning system having drop-down diffuser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-610172