US2705875A - Multiple deck refrigerated display case - Google Patents

Multiple deck refrigerated display case Download PDF

Info

Publication number
US2705875A
US2705875A US32136952A US2705875A US 2705875 A US2705875 A US 2705875A US 32136952 A US32136952 A US 32136952A US 2705875 A US2705875 A US 2705875A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
air
shelf
duct
means
zone
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.)
Expired - Lifetime
Application number
Inventor
Joseph R Pichler
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00Show cases or show cabinets
    • A47F3/04Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439Cases or cabinets of the open type
    • A47F3/0443Cases or cabinets of the open type with forced air circulation

Description

April 12, 1955 J. R. PICHLER MULTIPLE DECK REFRIGERATED DISPLAY CASE Filed Nov. 19, 1952 2 Shets-Sheet l JNVENTOR. Joseph R. Pichler Fig. 2 BY A fomeys April 12, 1955 J. R. PICHLER MULTIPLE DECK REFRIGERATED DISPLAY CASE 2 Sheets-Sheet 2 Filed Nov. 19, 1952 INVENTOR. Joseph R. Pichler 344W and $542,. Attorneys United States Patent MULTIPLE DECK REFRIGERATED DISPLAY CASE Joseph R. Pichler, Dayton, Ohio, assignor to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application 1 ovember 19, 1952, Serial No. 321,369

11 Claims. (Cl. 62--89.5)

This invention relates to self-service refrigerated display cases.

A general object of my invention is to provide a display case of the multiple deck or shelf type having a substantially open top upper compartment or refrigerated zone and an open top lower compartment or refrigerated zone therein with means for improving the refrigeration 'of the zones by a novel arrangement for circulating air cooled in the case about both of these zones.

Another object of my invention is to provide an improved circulation and distribution of air cooled in a display case throughout separate superimposed substantially open top compartments or zones therein whereby substantially uniform temperatures may be maintained in the separate zones.

A further object of my invention is to provide a multiple deck, bin or shelf type refrigerated display case with separate upper and lower sets of fans or blowers and to associate baflies or duets with the sets of fans in such a manner as to cause the same to force air cooled in the case in a plurality of opposite directions about or within the uppermost deck, bin or Zone so as to reduce the temperature gradient between the upper and lower zones.

A still further object of my invention is to provide a display case of the type described in the preceding objects with means whereby some of the air cooled in the cabinet is circulated under, over and in contact with foods stored on the food supporting shelf of the upper deck, bin or zone as well as in opposite directions through closed ducts associated with said zone.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings, wherein a preferred form of the present invention is clearly shown.

In the drawings:

Figure l is a front view of a display case having my invention embodied therein;

Figure 2 is an end view of the display case shown in Figure l; and

Figure 3 is an enlarged vertical sectional view through the display case shown in Figure l and taken on the line 33 thereof.

The display case of the present invention comprises a horizontally elongated cabinet generally represented by the reference character in Figures 1 and 2 of the drawings. Cabinet 10 includes an insulated bottom wall 11 (see Figure 3), an upright insulated back wall 12, a short upright front wall 14 and upright end walls 16 and 17. The upper part of short front wall 14 is formed by a multiple glass panel or damming wall 18 mounted in a suitable frame. A hood 19 extends from the back of cabinet 10 forwardly over a portion of the top of the display case. Upper and lower glass plates 21 and 22 form portions of the end walls 16 and 17 of cabinet 10. The insulated bottom Wall 11, back wall 12 and the insulated lower portion of front wall 14 are provided with an inner metal liner 24 (see Figure 3). The compartment formed by walls 11, 12, 14, 16 and 17 of cabinet 10 is divided into upper and lower substantially open top food storage compartments, bins, decks or zones to provide a multiple deck or shelf type refrigerated display case in a manner to hereinafter be described. Each zone, bin or deck extends continuously throughout the length of the elongated cabinet 10 and may be provided with vertical transverse partitions (not shown) for segregating from the glass panel or damming wall 18.

Patented Apr. 12, 1955 ice different varieties of dairy and meat products stored in the zones from one another.

The structure of the lower bin, deck or zone includes a metal plate 26 having its long front edge supported on inturned flanges formed on metal strips 27 which receive and secure a glass plate 28 in a vertical position spaced It will be noted that the top of plate 28 is disposed below the top of wall 18 for a purpose to be hereinafter described. Longitudinally spaced apart brackets 29, suitably secured to liner 24 along the front wall 14 of cabinet 10, support the metal strips 27, plate 28 and the front edge of horizontal plate 26. The upturned rear edge of horizontal plate 26 rests on an inturned flange 31 provided on a vertical bafiie 32 which is secured to and supported from rows of longitudinally spaced apart brackets 33 mounted on liner 24 along the back wall 12 of cabinet 14 Horizontal plate 26 is spaced vertically from the insulated bottom wall 11 of cabinet 10 to provide a chamber 34 between the lowermost refrigerated compartment or zone and the bottom of the display case. An elongated cooling unit or evaporator 36, of a closed refrigerating system (not shown), is located in chamber 34. A vertically disposed partition 38 located in chamber 34 extends throughout the length of cabinet 10 and is provided with a plurality of round openings 39. A fan or blower 41 is located in each of the round openings 39 and provides a first means for circulating air cooled by evaporator 36. Each fan 41 is mounted upon and driven by the shaft of an electric motor 42 suitably supported in chamber 34. The structure of the lower deck or zone also includes a sheet metal member 44 having its front edge turned down and supported upon the horizontal partition or plate 26. The front of member 44 terminates a substantial distance inwardly from the front portion of the lower deck or zone and its downturned f ont edge is provided with a series of openings 46 for a purpose to hereinafter be described. The rear edge portion of sheet metal member 44 is also bent or turned down so as to be locked between vertical bafiie 32 and the rear edge portion of partition or plate 26. Sheet metal member 44 provides means forming an air duct or by-pass passage 47 between the same and plate 26. Plate 26 is provided with a plurality of spaced apart elongated openings 48 along and adjacent its front edge and a plurality of similarly spaced apart elongated openings 49 along and adjacent to its rear edge. A reticulated or wire rod food supporting shelf 51, constituting a part of the lower compartment or zone, has its rim at the back thereof supported on sheet metal by-pass passage or duct forming member 44 and has legs secured to its front rim supported upon the front edge portion of plate 26. The plate 26, duct forming member 44, shelf 51, damming wall 18 and vertical plate 28 of the lower deck or zone are coextensive with one another throughout the entire length of cabinet 10.

The structure of the upper compartment, bin, deck or zone includes a wall 53 mounted in any suitable or desirable manner in the display case which has metal strips 54 secured to its front edge. Metal strips 54 provide a mounting pocket or the like for supporting an upright angularly disposed multiple glass plate damming wall 56. At the back of the upper zone or deck there is a vertical baffle or plate 58 spaced from and secured to liner 24 of cabinet rear wall 12 by a plurality of rowsof spaced apart U-shaped or the like brackets 59. Plate 58 is disposed above vertical baflie 32 and cooperates therewith to provide means forming an upright air passageway 61 along the cabinet rear Wall 12 which communicates with the rear portion of lower chamber 34. A sheet metal partition 63 is disposed above wall 53 and provides means forming duct or passage 64 therebetween. The front edge of partition 63 rests upon metal strips 66 which form a pocket-like mounting for supporting a vertical glass plate 67 in an upright position spaced from the multiple plate damming wall 56. Plate 67, metal strips 66 and the front portion of partition 63 are supported upon wall 53 by a plurality of spaced apart U-shaped or the like brackets 68. The rear edge of partition 63 is welded or otherwise suitably secured to vertical plate 58. Both the front and rear portions of partition 63 are provided with a row of spaced apart openings 71 and 72 respectively. An impervious metal bafile 73 is angularly located between vertical plate 58 and partition 63 and has its edges welded or otherwise suitably secured to these elements. A reticulated or bar-like food supporting shelf 74 is disposed above and in spaced relation to partition 63 to provide a by-pass passage therebetween. Shelf 74 has its front edge supported by suitable spaced apart legs upon partition 63 and has its rear edge supported by a plurality of spaced apart brackets 76 secured to vertical plate or battle 58. An angularly disposed partition or bafile 77 has its upper edge secured to wall 53 and its lower edge secured to vertical plate 58. Partition 77 is provided with a plurality of round openings 78 each of which receives a blower or fan 79 driven by an electric motor 81 rigidly mounted upon partition 77 in any suitable or conventional manner. The upper deck, bin or zone also includes means forming a second duct or passage 82 associated therewith and communicating with the rear end portion of the first duct or passage 64. The means which forms duct 82 comprises a metal baffie 83 having its rear portion suitably secured to vertical plate 58 and having its front edge terminating inwardly of damming wall 56 and secured to the underside of wall 53 of the upper deck or zone. The front portion of baffle 83 is perforated as at 84 to provide a plurality of air discharge holes or openings at the front of duct 82.

The elements constituting the structure of the upper deck, bin or zone in cabinet and the plates or battles 32 and 58 are preferably coextensive with one another and extend throughout the entire length of the elongated cabinet. The arrangement and cooperation of plates or battles 32 and 58 with one another and with the rear wall 12 of cabinet 10 are such as to provide outlet openings 86 and 87 for the discharge of air from the upright passageway 61 over the upper and lower decks or zones respectively above the shelves 74 and 51 thereof and upon meats or dairy products stored on these shelves. Vertical plate 58 is further provided with an outlet opening 88 which permits air to pass from passageway 61 upwardly beneath shelf 74 and forwardly therealong. Cabinet 10 of the display case may be provided with an auxiliary or jack shelf 89 vertically spaced from and suitably supported above the upper deck or zone for the reception of less perishable food products or display packages. A mirror 91 may be located in back of the auxiliary or jack shelf 89 for viewing articles on this shelf from the front of the display case.

My invention is directed to a novel circulation of air within cabinet 10 and about the upper and lower zones, compartments, bins or decks in or upon which meat and dairy products are stored and particularly to the circulation of air about the upper deck or zone so as to refrigerate this zone to substantially the same temperature as that of the lower zone. Having described the structure and arrangement of air passages or duct forming means of the presently disclosed display case or cabinet, the circulation of cooled air over and about the vertically spaced bins, decks or zones will now be explained. The refrigerating effect produced by cooling unit or evaporator 36 cools air in the lower chamber 34 to a predetermined low temperature and operation of the blowers or fans 41 and 79 causes the cooled air to be forced about the meat or dairy product supporting compartments, decks, bins or zones to refrigerate and preserve the same. The plurality of lower fans 41, spaced apart longitudinally along the elongated cabinet 10, force air cooled by evaporator 36 upwardly through the upright passageway 61 and forwardly thereof through outlet openings 86 and 87 at a point substantially above the rear portion of shelves 74 and 51 and downwardly over foods stored thereon. The opening or plurality of spaced apart openings 49 at the rear of horizontally disposed partition plate 26 permits some of the air circulated by fans 41 to enter the by-pass passage or duct 47 and flow forwardly of the case out of the plurality of holes or openings 46 provided at the front edge of sheet metal member 44 beneath the front portion of shelf 51 of the lower deck or zone and into contact with foods supported on this shelf. Some of the air circulated upwardly in passageway 61 by fans 41 enters the outlet opening or openings 88 in vertical plate 58 and is directed, by the metal baflle 73, through the spaced apart openings 72 in the back portion of partition 63 into the by-pass passage beneath shelf 74, above this partition and into contact with foods supported on this shelf. The fans or blowers 41 create a low pressure area in the front portion of lower chamber 34 which causes air circulated over the top opening 87 of vertical baffle 32, onto foods stored upon shelf 51, to flow over vertical glass plate 28 and downwardly through the space between this plate and the front damming wall 18 into the chamber 34. Simultaneously with this flow, air egressing from duct 47 passes beneath the front portion of shelf 51 at the front of horizontal partition 26 from where it flows through the openings 48 therein into the lower chamber 34. The returning air passing between vertical glass plate 28 and front damrning wall 18 into chamber 34 mixes with the returning air egressing from duct 47 through the openings 48 prior to being circulated over and/ or through the evaporator 36 for recooling the same. The longitudinally spaced apart upper fans or blowers 79 create a low pressure area in the rear part of duct 64 of the upper deck, bin or zone structure to thus draw air flowing downwardly from the top outlet openings 86 of passageway 61 and over foods on shelf 74 through the space between vertical glass plate 67 and the front damrning wall 56 of this upper zone into duct 64. Simultaneously with this flow of air the air circulated beneath shelf 74, by way of openings 72 and 88, is drawn to the front of partition plate 63 and passes through opening 71 therein into the first duct 64 of the upper bin or zone. The air flows toward the rear of the display case through duct 64 and the fans 79 then force this air forwardly through the second or lower duct 82 of the upper zone or deck. Air circulated forwardly through duct 82 passes out of the same through the holes or reticulations 84 in duct forming baffle 83 and flows downwardly where it commingles with air egressing from the outlet opening 87 and passes over foods in the front portion of the lower compartment, deck or zone. The circulation of cooled air rearwardly through duct 64 and thence forwardly through duct 82 in addition to that circulated over foods stored on shelf 74 and beneath this shelf augments or greatly increases the refrigerating effect of the upper bin, deck or zone to maintain food products stored therein at substantially the same low temperature as the food products stored in the lower deck or zone. Thus the temperature gradient between the superimposed bins, decks or zones is materially reduced. Air egressing from outlet opening 86 of the upright passageway 61 flows along the underside of the auxiliary jack shelf 89 to cool the less perishable food products supported thereon.

It should be apparent from the foregoing that my invention as herein disclosed provides an improved double or multiple deck self-service display case. The forced circulation of air forwardly over foods in the upper refrigerated bin, deck or zone and rearwardly and again forwardly within the ducts thereof, by the plurality of uppermost fans or blowers, provides an effective and efficient arrangement for cooling the upper deck or zone to substantially the same temperature as that of the lower more easily refrigerated deck or zone. Cold circulated air is heavier than air ambient to the display case and the front damming walls threby prevent this air from flowing out of the open top of the refrigerated bins, decks or zones and insure return thereof to the lower chamber so as to be recooled and recirculated. This arrangement results in greater economy in operation since the refrigerated air is prevented from escaping to the outside of the display case and is cooled and recooled over and over again. By providing the plurality of air flow ducts associated with elevated bins, decks or zones the number of such decks or zones in a display case may be increased and properly refrigerated by increasing such air flow ducts associated With the zones.

While the form of embodiment of the invention as herein disclosed constitutes a preferred form, it is to be understood that other forms might be adopted, as may come within the scope of the claims which follow.

What is claimed is as follows:

1. A display case comprising in combination, an elongated cabinet including a bottom wall, anupright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf, and means therebelow forming a duct therealong, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, an evaporator of a closed refrigerating system disposed within said chamber for cooling air therein, means forming an upright passageway along the back wall of said cabinet communicating with the rear of said chamber and with the rear portion of each of said zones at a point above the shelf thereof, a first air circulating means for forcing air cooled by said evaporator upwardly from said chamber through said passageway and forwardly of the case over foods on said shelves, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over the top of said duct thereof, a second separate air circulating means above said first air circulating means for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone rearwardly through said duct thereof and downwardly over foods stored on the shelf of said lower zone, means for directing some of the cooled air circulated by said first air circulating means into and forwardly of the case through the duct of said lower zone, and means forming a passage along the front of said case for returning the air forced by both of said air circulating means to said chamber for recooling the the same by said evaporator.

2. A display case comprising in combination, an elongated cabinet including a bottom wall, an upright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf, at least said upper zone having means below the shelf thereof forming a first duct therealong and a second duct below said first duct, said first duct communicating with said second duct at the rear of said cabinet and said second duct communicating with the space between said zones substantially midway between the front and back of said cabinet, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, means within said chamber for cooling air therein, means forming an upright passageway along the back wall of said cabinet communicating with the rear of said zones at a point above the shelf thereof, a first air circulating means for forcing air cooled by said cooling means upwardly from said chamber through said passageway and forwardly of the case over foods on said shelves, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over the top of said first duct, a second separate air circulating means above said first air circulating means and interposed between said first duct and said second duct for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone rearwardly through said first duct, forwardly through said second duct and downwardly over foods stored on the front portion of the shelf of said lower zone, and means forming a passage along the front of said case for returning the air forced by both of said air circulating means to said chamber for recooling the same by said cooling means.

3. A display case comprising in combination, an elongated cabinet including a bottom wall, an upright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf, said upper zone having means below the shelf thereof forming a first duct therealong and a second duct below said first duct, said first duct communicating with said second duct at the rear of said cabinet and said second duct communicating with the space between said zones substantially midway between the front and back of said cabinet, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, said lower zone having means below the shelf thereof forming a duct therealong, an evaporator of a closed refrigerating system disposed within said chamber for cooling air therein, means forming an upright passageway along the back wall of said cabinet communicating at its lower end with the rear of said chamber and with the rear portion of each of said zones at a point above the shelf thereof, a first air circulating means for forcing air cooled by said evaporator upwardly from said chamber through said passageway and forwardly of the case over foods on said shelves, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over the top of said first duct thereof, a second separate air circulating means above said first air circulating means and interposed between said first duct and said second duct for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone rearwardly through said first duct, forwardly through said second duct and downwardly over foods stored on the front portion of the shelf of said lower zone, means for directing some of the cooled air circulated by said first air circulating means into and forwardly of the case through the duct of said lower zone, and means forming a passage along the front of said case for returning the air forced by both of said air circulating means to said chamber for recooling the same by said evaporator.

4. A display case comprising in combination, an elongated cabinet including a bottom wall, an upright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf extending throughout the length of the case intermediate said cabinet end walls, a front damming wall and a vertical plate rearwardly spaced from and of less height than said damming front walls, said damming front walls and said vertical plate of each of said zones being coextensive with the shelf thereof, at least said upper zone having means below the shelf thereof forming a duct therealong, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, an evaporator of a closed refrigerating system disposed within said chamber for cooling air therein, means forming an upright passageway along the back wall of said cabinet communicating with said chamber and with the rear of said zones at a point above the shelf thereof, a first plurality of longitudinally spaced apart air circulating means for forcing air cooled by said evaporator upwardly from said chamber through said passageway, forwardly of the case over foods on said shelves and downwardly through the space between said front damming wall and said vertical plate of said zones, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over said duct thereof, and a second plurality of longitudinally spaced apart air circulating mean separate from and disposed above said first plurality of air circulating means for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone into and rearwardly through said duct associated therewith and downwardly over foods stored on the shelf of said lower zone prior to its flow into said chamber for recooling by said evaporator.

5. A display case comprising in combination, an elongated cabinet including a bottom wall, an upright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf extending throughout the length of the case intermediate said cabinet end walls, a front damming wall, a vertical plate rearwardly spaced from and of less height than said damming front walls and means below the shelves forming a duct therealong, said damming front wall, said vertical plate and said duct of each of said zones being coextensive with the shelf thereof, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, an evaporator of a closed refrigerating system disposed within said chamber for cooling air therein, means forming an uprightpassageway along the back wall of said cabinet communicating with the rear of said chamber and with the rear portion of each of said zones at a point above the shelf thereof, a first plurality of longitudinally spaced apart air circulating means for forcing air cooled by said evaporator upwardly from said chamber through said passageway and forwardly of the case over foods on said shelves, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over the top of said duct thereof, a second plurality of longitudinally spaced apart air circulating means separate from and disposed above said plurality of first air circulating means for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone rearwardly through said duct thereof and downwardly over foods stored on the shelf of said lower zone, means for directing some of the cooled air cir culated by said plurality of first air circulating means into and forwardly of the case through the duct of said lower zone, and the air flowing over foods on the shelf of each of said zones being returned to said chamber for recooling by said evaporator through the space between the damming wall and the vertical plate of said lower zone.

6. A display case comprising in combination, an elongated cabinet including a bottom wall, an upright back wall and upright end walls, said cabinet having separate substantially open top storage zones vertically spaced one above the other adapted to contain food products to be refrigerated, each of said zones including a reticulated food supporting shelf extending throughout the length of the case intermediate said cabinet end walls, a front damming wall and a vertical plate rearwardly spaced from and of less height than said damming front walls, said damming front wall and said vertical plate of each of said zones being coextensive with the shelf thereof, at least said upper zone having means below the shelf thereof forming a first duct therealong and a second duct below said first duct, said first duct communicating with said second duct at the rear of said cabinet and said duct communicating with the space between said zones substantially midway between the front and back of said cabinet, the lower zone being spaced from the bottom wall of said cabinet to provide a chamber therebetween, means within said chamber for cooling air therein, means forming an upright passageway along the back wall of said cabinet communicating with the rear of said zones at a point above the shelf thereof, a first plurality of longitudinally spaced apart air circulating means for forcing air cooled by said cooling means upwardly from said chamber through said passageway and forwardly of the case over foods on said shelves, means for directing some of the cooled air forced upwardly in said passageway beneath and into contact with foods supported on the shelf of said upper zone and forwardly of the case over the top of said first duct, a second plurality of longitudinally spaced apart air circulating means above said first plurality of air circulating means and interposed between said first duct and said second duct for forcing air flowing forwardly across the top and bottom of said shelf of said upper zone rearwardly through said first duct, forwardly through said second duct and downwardly over foods stored on the front portion of the shelf of said lower zone, and the air flowing over foods on the shelf of each of said zones being returned to said chamber for recooling by said cooling means through the space between the damming wall and the vertical plate of said lower zone.

7. A multiple deck self service display case of the type including a plurality of substantially open top display bins disposed one above the other and each having a shelf therein spaced from the bottom thereof adapted to receive and support food products to be refrigerated comprising; an evaporator of a closed refrigerating system within said case, means for circulating air over said evaporator to cool the same, supply and return passageways associated with said evaporator and said air circulating means, said supply passageway being arranged to discharge the cooled air forwardly of the case above each shelf and upon food products thereon, means for refrigerating the bottom side of food products supported upon at least the shelf in the uppermost of said bins, said last named means including a by-pass passage beneath the shelf in said uppermost bin, said by-pass passage receiving some of the cooled air from said supply passageway circulating toward said uppermost bin and directing the same forwardly of the case along the underside of the shelf in said uppermost bin, a first duct means communicating with the front portion of said uppermost bin for receiving and causing the forward flow of air circulated both over and under the shelf therein to be reversed and directed toward the rear of the case, a second duct means communicating with the back portion of said first duct means for receiving air therefrom, and a second air circulating means spaced from said first named air circulating means and located at the point of communication of said first duct means with said second duct means for directing air received therein toward the front of the case and downwardly into the air flowing over the shelf in the lowermost of said bins.

8. A multiple deck self service display case of the type including a plurality of substantially open top display bins disposed one above the other and each having a shelf therein spaced from the bottom thereof adapted to receive and support food products to be refrigerated comprising; an evaporator of a closed refrigerating system within said case, means for circulating air over said evaporator to cool the same, supply and return passageways associated with said evaporator and said air circulating means, said supply passageway being arranged to discharge the cooled air forwardly of the case above each shelf and upon food products thereon, means for refrigerating the bottom side of food products supported upon each of the shelves in said bins, said last named means including a by-pass passage beneath each shelf, said by-pass passages each receiving some of the cooled air circulated by said air circulating means and directing the same forwardly of the case along the underside of said shelves, duct means communicating with the front portion of the uppermost of said bins for receiving and causing the flow of air circulated over and under the shelf therein to be reversed and directed toward the rear of the case, and said duct means discharging the reversed flow of air into the air flowing over the shelf in the lowermost of said bins.

9. A multiple deck self service display case of the type including a plurality of substantially open top display bins disposed one above the other and each having a shelf therein spaced from the bottom thereof adapted to receive and support food products to be refrigerated comprising; an evaporator of a closed refrigerating system within said case, means for circulating air over said evaporator to cool the same, supply and return passageways associated with said evaporator and said air circulating means, said supply passageway being arranged to discharge the cooled air forwardly of the case above each shelf and upon food products thereon, means for refrigerating the bottom side of food products supported upon each of the shelves in said bins, said last named means including a by-pass passage beneath each shelf, said by-pass passages each receiving some of the cooled air circulated by said air circulating means and directing the same forwardly of the case along the underside of said shelves, a first duct means communicating with the front portion of the uppermost of said bins for receiving and causing the flow of air circulated over and under the shelf therein to be reversed and directed toward the rear of the case, and a second duct means communicating with the back portion of said first duct means for receiving air therefrom and again directing this air toward the front of the case and downwardly into the air flowing over the shelf in the lowermost of said bins.

10. A display case according to claim 9 wherein a second air circulating means is spaced from the first air circulating means and is located at the point of communication between the duct means for augmenting the flow of air therethrough.

11. A multiple deck self service display case of the type including a plurality of substantially open top display bins disposed one above the other and each having a shelf therein spaced from the bottom thereof adapted to receive and support food products to be refrigerated comprising; an evaporator of a closed refrigerating system within said case, means for circulating air over said evaporator to cool the same, supply and return passageways associated with said evaporator and said air circulating means, said supply passageway being arranged to discharge the cooled air forwardly of the case above each shelf and upon food products thereon, means for refrigcrating the bottom side of food products supported upon at least the shelf in the uppermost of said bins, said last named means including a by-pass passage beneath the shelf in said uppermost bin, said by-pass passage receiving some of the cooled air from said supply passageway circulating toward said uppermost bin and directing the same forwardly of the case along the underside of the shelf in said uppermost bin, a first duct means communieating with the front portion of said uppermost bin for receiving and causing the forward flow of air circulated both over and under the shelf therein to be reversed and directed toward the rear of the case, a second duct means 9 10 communiedating with the bagktfiiorftion off said first due; UNITED STATES PATENTS means an exten 'ng toWar e rent 0 t e case, an 1 said second duct means receiving air from said first duct References Cted m file of thls Patent means and again directing the same forwardly of the 2,466,286 Stultz Apr. 5, 1949 case and downwardly into the air flowing over the shelf in 5 2,528,916 Shreve Nov. 7, 1950 the lowermost of said bins. 2,631,438 Weber Mar. 17, 1953

US2705875A 1952-11-19 1952-11-19 Multiple deck refrigerated display case Expired - Lifetime US2705875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2705875A US2705875A (en) 1952-11-19 1952-11-19 Multiple deck refrigerated display case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2705875A US2705875A (en) 1952-11-19 1952-11-19 Multiple deck refrigerated display case

Publications (1)

Publication Number Publication Date
US2705875A true US2705875A (en) 1955-04-12

Family

ID=23250328

Family Applications (1)

Application Number Title Priority Date Filing Date
US2705875A Expired - Lifetime US2705875A (en) 1952-11-19 1952-11-19 Multiple deck refrigerated display case

Country Status (1)

Country Link
US (1) US2705875A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744807A (en) * 1953-02-18 1956-05-08 Mccray Refrigerator Company In Adjustable mezzanine shelf for refrigerated display cases
US2810267A (en) * 1956-04-16 1957-10-22 C V Hill & Company Inc Refrigerated display case
US2836039A (en) * 1955-09-19 1958-05-27 Weber Showcase & Fixture Co In Refrigerated self-service showcase
US3196626A (en) * 1962-10-24 1965-07-27 Gabler Martin Multi-tiered open bin refrigerated showcases and in method of refrigerating pertaining thereto
DE1235961B (en) * 1958-04-02 1967-03-09 Hussmann Refrigerator Co jugs juice extractors
DE1291342B (en) * 1958-02-10 1969-03-27 Pet Inc N Ges D St Delaware Tiefkuehlvitrine
EP0439815A1 (en) * 1990-01-12 1991-08-07 Linde Aktiengesellschaft Commercial refrigerated cabinet
DE4243974A1 (en) * 1992-12-23 1994-06-30 Linde Ag Combination of freezer chests for selling goods
US5675983A (en) * 1996-09-11 1997-10-14 Kysor Industrial Corporation Synergistic refrigerated display case
US20030234259A1 (en) * 2002-06-20 2003-12-25 Selfridge Glenn D. Frozen product vending machine
EP1486148A1 (en) * 2003-06-10 2004-12-15 Carrier Corporation Refrigerated display cabinets
US20050097910A1 (en) * 2003-11-12 2005-05-12 Sanden Corporation Open showcase
WO2005096898A1 (en) * 2004-04-08 2005-10-20 Industrie Scaffalature Arredamenti - Isa S.P.A. Refrigerated display case for foodstuffs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466286A (en) * 1947-09-05 1949-04-05 Ernest L Stultz Refrigerator display case
US2528916A (en) * 1948-07-19 1950-11-07 Tyler Fixture Corp Refrigerated shelving
US2631438A (en) * 1950-07-01 1953-03-17 Weber Showcase & Fixture Co In Self-service refrigerated showcase

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466286A (en) * 1947-09-05 1949-04-05 Ernest L Stultz Refrigerator display case
US2528916A (en) * 1948-07-19 1950-11-07 Tyler Fixture Corp Refrigerated shelving
US2631438A (en) * 1950-07-01 1953-03-17 Weber Showcase & Fixture Co In Self-service refrigerated showcase

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744807A (en) * 1953-02-18 1956-05-08 Mccray Refrigerator Company In Adjustable mezzanine shelf for refrigerated display cases
US2836039A (en) * 1955-09-19 1958-05-27 Weber Showcase & Fixture Co In Refrigerated self-service showcase
US2810267A (en) * 1956-04-16 1957-10-22 C V Hill & Company Inc Refrigerated display case
DE1291342B (en) * 1958-02-10 1969-03-27 Pet Inc N Ges D St Delaware Tiefkuehlvitrine
DE1235961B (en) * 1958-04-02 1967-03-09 Hussmann Refrigerator Co jugs juice extractors
US3196626A (en) * 1962-10-24 1965-07-27 Gabler Martin Multi-tiered open bin refrigerated showcases and in method of refrigerating pertaining thereto
EP0439815A1 (en) * 1990-01-12 1991-08-07 Linde Aktiengesellschaft Commercial refrigerated cabinet
DE4243974A1 (en) * 1992-12-23 1994-06-30 Linde Ag Combination of freezer chests for selling goods
US5675983A (en) * 1996-09-11 1997-10-14 Kysor Industrial Corporation Synergistic refrigerated display case
US20030234259A1 (en) * 2002-06-20 2003-12-25 Selfridge Glenn D. Frozen product vending machine
US6929149B2 (en) * 2002-06-20 2005-08-16 Royal Vendors, Inc. Frozen product vending machine
EP1486148A1 (en) * 2003-06-10 2004-12-15 Carrier Corporation Refrigerated display cabinets
US20050097910A1 (en) * 2003-11-12 2005-05-12 Sanden Corporation Open showcase
WO2005096898A1 (en) * 2004-04-08 2005-10-20 Industrie Scaffalature Arredamenti - Isa S.P.A. Refrigerated display case for foodstuffs

Similar Documents

Publication Publication Date Title
US3403525A (en) Defrost system for air curtain type refrigerated display case
US3392544A (en) Refrigerated case auxiliary duct structure
US3392543A (en) Separable-section refrigerated case
US3369375A (en) Refrigerated display case
US3186185A (en) Refrigerated display unit
US3199579A (en) Heating and cooling food storage cabinet
US3230732A (en) Water cooling system for refrigerating fixtures, and fixture therefor
US3584467A (en) Cooking structure for an open access refrigerator
US3638717A (en) Refrigerator-freezer with meat keeper
US3151472A (en) Household refrigerator
US2506448A (en) Temperature and humidity controlled refrigerating apparatus
US3350899A (en) Household refrigerator
US3696630A (en) Humidified and refrigerated showcase
US6539729B2 (en) Refrigerator airflow distribution system and method
US5285655A (en) Refrigerator with freezer air directed over cooler compartment shelf
US5392615A (en) Air conduit system in a refrigerator
US3019620A (en) Refrigerating apparatus
US3403533A (en) Refrigerator with upright dividing wall
US5117649A (en) Horizontal refrigerator
US5345778A (en) Low temperature display merchandiser
US2907180A (en) Refrigerating apparatus having air control means for multiple compartments
US2719772A (en) Horizontally movable refrigerator shelf
US2780926A (en) Wall mounted refrigerating apparatus
US5363672A (en) Refrigeration compartment for use with preparation table
US2712733A (en) Freezer compartment in refrigerator door