Abstract: A gas distribution unit for use in a rack, that holds rack-mounted equipment that produces heat during operation, includes a housing defining a cavity, an exhaust port in a top wall of the housing, and at least one intake port configured to provide fluid communication between the cavity and a volume of gas external to the housing, the at least one intake port being at least partially laterally displaced relative to the exhaust port, the housing being configured to be disposed in and coupled to the rack and to direct gas from the cavity substantially directly upward through the exhaust port when coupled to the rack, and at least one fan coupled to and disposed within the housing and configured to draw gas through the at least one intake port, and to force the drawn-in gas out of the gas distribution unit through the exhaust port.

Abstract: A storage apparatus is provided that comprises a display case part with an inside thereof being dividable into a plurality of zones, a supply duct that is connected to supply openings for supplying conditioning air for controlling environmental conditions to the plurality of zones respectively, and an exhaust duct that is connected to exhaust openings for taking in air from the plurality of zones. In this storage apparatus, conditioning air such as cold air or hot air is circulated in the respective zones, and the environmental conditions can be adjusted efficiently in zone basis. Therefore, in a storage apparatus equipped with an open-type display case part, it is possible to dispense with an air curtain covering the entire open side, so that a storage apparatus with a high storage capacity is provided.

Abstract: A refrigerated merchandiser is based on a frame that defines a refrigeration chamber that houses a unit cooler, which is in communication with a cooled air plenum that, in turn, is in communication with a display chamber. The unit cooler supplies cooled air to the plenum. The cooled air that is supplied to the plenum is then provided to a shelf that is mounted in the display chamber. Additionally, the cooled air is provided to at least one drawer, which is slidably mounted in the display chamber.

Abstract: A refrigerated merchandiser includes a case defining a product display area and an air passage at least partially surrounding the product display area. The air passage directs refrigerated air to the product display area. The case also defines an air chamber separate from the air passage and in fluid communication between the air passage and the product display area. The merchandiser also includes a fan operable to draw the refrigerated air from the air passage and pressurize the refrigerated air within the air chamber to facilitate distribution of the refrigerated air from the air chamber and into the product display area.

Abstract: A refrigerated display case reduces the temperature of refrigerated items in the front of the case and achieves a tighter temperature range within the case. Air drawn from a cooler is further cooled by a coil. Some of the cold air is discharged along the front of the case as an air curtain is and drawn by fans back into the cooler. The remaining cold air is directed to a duct in the rear of the case. Openings in the duct allow air to flow across the refrigerated items towards the front of the case, further reducing the temperature of the refrigerated items in the front of the case. To prevent refrigerated items in the rear of the case from freezing, air entering the duct is warmed with air that bypasses the coil.

Abstract: A condenser coil for a refrigerated beverage and food service merchandiser includes a plurality of parallel fins between adjacent tubes. In order to reduce the likelihood of fouling by the bridging of fibers therebetween, the spacing of the fins is maintained at a distance of 0.4 to 0.8 inches apart. In one embodiment, the tubes comprise microchannel tubes, with no fins therebetween, and the spacing between the microchannel tubes is maintained in the range of 0.75 inches to optimize the heat transfer performance while minimizing the occurrence of fouling. A supporting structure is provided between microchannel tubes when no fins are included. Also, plural rows of microchannel tubes are provided with separate inlet headings and with the rows being staggered in transverse relationship to enhance the heat transfer characteristic while minimizing the likelihood of fouling.

Abstract: A cooling apparatus for such things as convenience foods and beverages has a tilted, open faced bed from which persons may select objects. The apparatus is self-contained, and may run from a standard, single phase electrical outlet. It may be carried by two people, and is suitable for mounting either on its own base in a recess in a checkout counter or other similar installation. The open faced be may have a channel depth of section that is relatively deep as compared with to its width, the flow path length, or the depth of the flow released to run along the channel, thereby tending to discourage mixing of the cooled flow with the surrounding ambient environment. The apparatus may include a two piece molded housing that defines the structural skeleton for both the cooling bed and a lodgement for various elements of the cooling system. The bed may include a porous deck, or drain panels, that may tend to encourgare cooled air to drain toward a cooling plenum intake panel.

Abstract: A refrigerator comprises a cool air generating part supplying cool air to a storage compartment; upper and lower cabinets having first and second storage compartments; and a shaft rotatably supporting the upper and lower cabinets, respectively. With this configuration, the refrigerator is useable in all directions by a rotatable structure, is easily carried by wheels, and is useable as a table by a table member provided in an upper part of an upper cabinet.

Abstract: A showcase includes air outlets provided at an upper rear end of a goods-storing room, and shelf ducts individually provided at lower faces of goods shelves. Cold air discharged from the air outlets is caused to descend along a rear plate of the goods-storing room, and then flows through the shelf ducts from rear ends towards front ends of the goods shelves while being partly discharged downward, whereby the cold air can be discharged downward from the shelf ducts to lower goods shelves, making it possible to efficiently cool goods placed on the goods shelves, even if no air curtain is formed in front of a showcase body. Accordingly, the visibility of upper goods shelves can be improved by using an upper face of the showcase formed by a transparent top plate.

Abstract: A refrigerated merchandiser includes a display case 10 having an open front and defining a product display space 30 wherein product 15 is hung for display and customer access on a peg bar support system 50. Refrigerated air passes into the product display space 30 through a back panel 24 perforated with air inlet holes 48. A baffle plate 60 lies superadjacent the peg bar support system 50 and is positioned relative thereto so as to provide an airflow gap 65 between its rearward edge 64 and the back panel 24 and an airflow gap 63 between its forward edge 62 and the tag moulding 58 of the peg bar support system 50. Refrigerated air passes through the rearward and forward airflow gaps to cool the product displayed on the peg bar support system. Additionally, the baffle plate may be perforated with a plurality of holes to provide additional airflow passages 70 through which further refrigerated air may pass to cool the product displayed on the peg bar support system.

Abstract: A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116). An evaporator (40) and a plurality of spaced fans (70) are disposed in a forced draft arrangement within compartment (120) with flow baffle (150) disposed therebetween to provide increased flow resistance whereby a more uniform velocity profile is provided entering the evaporator.

Abstract: A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116). The flow of refrigerant through the coils (46) of evaporator (40) disposed in the compartment (120) to cool the airflow from the product display area of the refrigerated merchandiser.

Abstract: A gas distribution unit for use in a rack, that holds rack-mounted equipment that produces heat during operation, includes a housing defining a cavity, an exhaust port in a top wall of the housing, and at least one intake port configured to provide fluid communication between the cavity and a volume of gas external to the housing, the at least one intake port being at least partially laterally displaced relative to the exhaust port, the housing being configured to be disposed in and coupled to the rack and to direct gas from the cavity substantially directly upward through the exhaust port when coupled to the rack, and at least one fan coupled to and disposed within the housing and configured to draw gas through the at least one intake port, and to force the drawn-in gas out of the gas distribution unit through the exhaust port.

Abstract: A forced air cooler (10) includes a cabinet (20) defining a lower chamber (30) wherein product is stored and an upper chamber (40) housing a pair of fans (62) and (64) positioned intermediate spaced evaporators (52) and (54). A support grate (90) disposed on the floor of the cabinet (20) supports the product off the floor and includes integral side fences (94) and (96) which serve to space the product away from the side walls (26) and (28) of the cabinet. The fans (62) and (64) draw air through the evaporators (52) and (54), respectively, and direct the cooing air through the openings provided by the slots (68) in the diffuser plate (66) to provide a uniformly distributed flow of cooling air, at its coolest condition, downwardly into the lower chamber (30) to pass over the product stored therein.

Abstract: Disclosed herein is a refrigerator that is capable of rapidly handling a load in a freezing chamber of the refrigerator or a refrigerating chamber of the refrigerator, and preventing stored goods in a rapid cooling chamber from being excessively cooled. The present invention also provides a method of controlling such a refrigerator. The refrigerator comprises a rapid cooling chamber mounted in at least one of the freezing and refrigerating chambers, a rapid cooling channel having one end communicating with an entering channel of the refrigerating chamber and the other end communicating with the rapid cooling channel, and a damper for controlling the flow of cool air passing through the entering channel of the refrigerating chamber and the rapid cooling channel. The damper is controlled on the basis of the load in the freezing or refrigerating chamber and a load in the rapid cooling chamber.

Abstract: A refrigerated cold beverage merchandiser (10) includes an enclosure defining an insulated, refrigerated display cabinet (25) and a compartment (30) heat insulated therefrom wherein a compressor (40) a condenser (50) and a condenser fan (60) are disposed. The condenser (30) is formed by a plurality of in-line tube banks (52). Each tube bank (52) is a serpentine tube formed a plurality of parallel straight tube segments (54) extending in horizontal rows (55) between a pair of spaced, opposed end plates (58) and elbow turns (56) connecting neighboring straight tube segments (56) in a conventional manner. Each successive tube bank (52) is aligned with the other tube banks so that respective parallel tube rows (55) are disposed in-line from the front to the rear of the condenser (50).

Abstract: A showcase includes air outlets provided at an upper rear end of a goods-storing room, and shelf ducts individually provided at lower faces of goods shelves. Cold air discharged from the air outlets is caused to descend along a rear plate of the goods-storing room, and then flows through the shelf ducts from rear ends towards front ends of the goods shelves while being partly discharged downward, whereby the cold air can be discharged downward from the shelf ducts to lower goods shelves, making it possible to efficiently cool goods placed on the goods shelves, even if no air curtain is formed in front of a showcase body. Accordingly, the visibility of upper goods shelves can be improved by using an upper face of the showcase formed by a transparent top plate.

Abstract: A refrigerated merchandiser includes a display case 10 having an open front and defining a product display space 30 wherein product 15 is hung for display and customer access on a peg bar support system 50. Refrigerated air passes into the product display space 30 through a back panel 24 perforated with air inlet holes 48. A baffle plate 60 lies superadjacent the peg bar support system 50 and is positioned relative thereto so as to provide an airflow gap 65 between its rearward edge 64 and the back panel 24 and an airflow gap 63 between its forward edge 62 and the tag moulding 58 of the peg bar support system 50. Refrigerated air passes through the rearward and forward airflow gaps to cool the product displayed on the peg bar support system. Additionally, the baffle plate may be perforated with a plurality of holes to provide additional airflow passages 70 through which further refrigerated air may pass to cool the product displayed on the peg bar support system.

Abstract: A refrigerated display case reduces the temperature of refrigerated items in the front of the case and achieves a tighter temperature range within the case. Air drawn from a cooler is further cooled by a coil. Some of the cold air is discharged along the front of the case as an air curtain is and drawn by fans back into the cooler. The remaining cold air is directed to a duct in the rear of the case. Openings in the duct allow air to flow across the refrigerated items towards the front of the case, further reducing the temperature of the refrigerated items in the front of the case. To prevent refrigerated items in the rear of the case from freezing, air entering the duct is warmed with air that bypasses the coil.

Abstract: A refrigeration system comprises a display case defining a display space. A cooling element cools the display space. An air mover direct air across the cooling element. At least one air outlet guides cool air into the display space to an air inlet located at the end of the shelf.

Abstract: A refrigerated merchandiser including a display case and a cooling module. The display case includes a plurality of walls defining a cavity and a receptacle. A plurality of vertically spaced shelves are disposed in the cavity extending between the side walls. A display zone is defined above the top surface of each shelf for the display of merchandise. A back panel disposed in the cavity adjacent to base back wall defines a duct in a fluid communication with a plurality of elongated openings formed in the back panel. A turbulence generating element is disposed in each display zone adjacent to the elongated opening.

Abstract: A shelved cupboard for refrigerated goods comprises an opening (1) for putting in or taking out refrigerated goods (2) and a ducting arrangement (3-10) for circulating of cooled air form a cooling element (11) provided thereto. The ducting arrangement (3-10) enables cooled air to be carried in separate streams, partly in between the regrigeratede goods (2) and partly past the opening (1) in order to create a screening layer. The distribution of cooled air between the refrigerated goods (2) takes place via an oulet nozzle (7) at an end of an overlying shelf (12), while the distribution of cooled air to the screening lyer takes place via an oulet nozzle (10) near the upper transverse end of the opening (1).

Abstract: A refrigeration system, refrigeration apparatus, evaporator apparatus, refrigeration apparatus conversion kit, and associated methods are provided.

Abstract: A refrigeration system, refrigeration apparatus, evaporator apparatus, refrigeration apparatus conversion kit, and associated methods are provided.

Abstract: A food display cooler for display of packaged and non-packaged food products for self-service by customers. The cooler simultaneously provides a cooled frosted display platform and a blanket of cooled air above the display platform and over the food products. The display platform is pivotally mounted to a pan underlying the display platform. The display platform has a first cooling coil attached directly to the bottom surface of the display platform and a second cooling coil and a fan is connected to the display platform such that the cooling coil pivots with the display platform when it is pivoted to the open position. A refrigeration unit is connected in fluid flow communication with the cooling coil, and is connected to the exterior surface of the pan.

Abstract: A refrigeration system comprises a display case having a bottom, a top, a first side, a second side, and a viewing area, all of which define a display space. A refrigeration coil cools the display case. At least one fan is adjacent the coil and propels cool air through the display space. A vertical channel communicates with the fan and orifices along the channel distribute air horizontally across the display space. At least one surface extends across the display space and directs air along a different horizontal path.

Abstract: A refrigerated merchandiser (100) includes an upright, open-front, insulated cabinet (110) defining a product display area (125) connected in airflow communication with a compartment (120) via an air circulation circuit (122, 114, 116). A high pressure drop evaporator (40) and a plurality of closely spaced fans (70) are disposed within compartment (120). The evaporator (40) is provided with a relatively high fin density heat exchanger coil providing a relatively high air side pressure drop through the evaporator. The increased flow resistance through the evaporator coupled with the plurality of closely spaced fans results in a substantially uniform evaporator outlet temperature profile across the length of the evaporator.

Abstract: A self-service food display in which a food tray that is supported by a support structure is cooled by an air stream that passes over and under the tray. The tray has opposed end sections and one or more intermediate sections. The air stream is uniformly distributed over the intermediate sections to substantially maintain the same temperature in the vicinity thereof. The air stream is distributed to the opposed end sections in higher volumes to minimize heat transfer with ambient. The air stream also forms an air curtain that extends above three sides of the food tray. Additionally, the air stream is distributed at an angle to an upper surface of the food tray in a manner that provides higher volumes to the opposed end sections to minimize heat transfer.

Abstract: The present invention provides low temperature zone forming equipment having a storage function capable of controlling temperature and humidity and a method and equipment for maintaining the quality of hauled fishes in an auction market of marine products such as fishes shellfishes, which constitute a low temperature distribution system closely linked with a purchase and sale system in consideration of the characteristics of the market.

Abstract: Device to distribute air for glass-fronted cabinets, counters, or in general containers which are refrigerated, heated or otherwise climatically conditioned, said containers (10) comprising a compartment (15) defining a volume containing the foodstuffs to be conserved, and possibly one or more overlying levels to contain the products facing the customer's side, said containers (10) also comprising a technical compartment (16) inside which the ventilation unit (22) and the thermal conditioning unit (30) are housed, said containers (10) comprising at least a transparent front element (20) facing the customer's side, the device comprising a conveyor element (25) transparent and substantially invisible arranged inside the compartment (15) and able to define, together with said transparent front element (20), an air-conveyor channel (26) which affects at least part of said transparent front element (20).

Abstract: A refrigerated showcase has a front opening through which a consumer can view and access foodstuffs on display. The foodstuffs are cooled by coolant air introduced through a slanted, perforated, interior panel located near a rear wall of the showcase. An air curtain directed downwardly at the front opening minimizes coolant air loss through the opening. Lips are applied and extended from edges of vertical sides of the access opening to reduce the loss of coolant air through the air curtain. Thus, relative flows of the coolant air and the air curtain are maintained inside the showcase.

Abstract: A refrigerated display case having a substantially wedge shape for displaying items at temperature below the surrounding ambient temperature. The display case includes a cold air discharge having a length and a warm air return having a length substantially greater than the cold air discharge. The cold air discharge includes a diffuser having a plurality of flow directing structures disposed at an angle relative to the direction of airflow to direct the flow air over the entire display case such cold air flows over the entire area of the display case to uniformly cool the entire product display area.

Abstract: Cabinet permits self-service by persons who are going to eat and has a counter or top (2) on which the foodstuffs are situated, having optionally means for conserving the foodstuffs in a hot and/or cold state. Its fundamental innovation lies in that it has means (3, 4 and 5) for applying a continuous air curtain (6) over said foodstuffs without impeding access to the same and for the purpose of preventing the presence of insects on the foodstuffs mentioned.

Abstract: A prepackaged food vending machine limited cooling apparatus and method for food vending machines of the type used for storing and dispensing prepackaged foods at normal room temperatures. The apparatus includes an elongated air conduit connected at one end thereof to, and in airflow communication with an interior of, the food vending machine. Another end of the air conduit connected to, and in airflow communication with a refrigerated interior of, a cold beverage vending machine. An airflow device, e.g. a blower or axial fan, is positioned in air flow communication between the interiors of the food and beverage vending machines whereby cold air within the beverage vending machine is transferred through the air conduit to the interior of the food vending machine in an airflow volume sufficient to reduce the air temperature within the food vending machine to a predetermined temperature below room temperature toward the operating temperature within the interior of the refrigerated beverage vending machine.

Abstract: A display freezer including a display case defining an interior space; an evaporator cover assembly located in the interior space and separating the interior space into a display portion and an evaporator portion, a fan plenum having therein an inlet communicating with the display portion of the interior space and an outlet spaced from the inlet and communicating between the evaporator portion and the display portion of the interior space; a fan operable to create a flow of air through the inlet and the outlet; a first baffle located adjacent the inlet and a second baffle and defining a serpentine path extending from the inlet for conducting the flow of air in the evaporator portion and an evaporator coil assembly located in the evaporator portion between the inlet and the outlet.

Abstract: An improved ice cream dipping cabinet which readily permits visualization of frozen food product stored therein. The dipping cabinet has an inner box that is at least partially surrounded by an outer box. Cold, refrigerating air is circulated between the inner and outer boxes, cooling the inner box walls and the food product stored therein. The inner and outer boxes have an upper, transparent portion to permit visualization of food products stored within the inner box. The inner box has a door that is hermetically sealed to a top wall thereof to prevent moisture migration from the inner box. The outer box has an open top to permit access to the inner box door.

Abstract: A cooling apparatus, such as a consumer display unit 400, comprises a covered tray 403 or other compartment for accommodating consumer product to be kept cool, and a housing 420 for accommodating a replaceable charge of dry ice out of contact with the product. A tubular element 421 communicates between the covered tray and the housing 420 to allow cold air and carbon dioxide to flow from the dry ice to the product.

Abstract: A transportable refrigerated display system having a display unit and a refrigeration unit, the display unit having first and second side walls and an end wall, the display unit being placed adjacent a refrigeration unit end wall which has an upper air inlet and a lower air outlet whereby circulation means circulate cooled air from the refrigeration unit through the lower air outlet and receive air from the upper air inlet to circulate cool air under a pallet placed within the display unit.

Abstract: A refrigerated display cabinet (10) has a chamber (12) accessible via the doors (12) of the cabinet. The bottommost shelf (16) in the chamber is a substantially imperforate shelf which is spaced from the bottom wall (17) of the chamber to form a duct-like passage through which air is drawn by a fan (15). The air is directed past an evaporator (17) of a refrigerating mechanism so as to be cooled. The cooled air is recirculated into the chamber (12) by passing it through apertures in a perforate inclined rear internal wall (18) of the chamber. The remainder of the cooled air is directed downwardly through openings (24) at the top of the chamber past the front of the shelves.

Abstract: A cover for a cooling unit, such as an evaporator assembly, of a display refrigerator. The cover is advantageously made of a single piece of material, preferably an injection molded, filled polypropylene plastic, which is capable of withstanding the harsh conditions found in a display refrigerator. The cover is further advantageously configured to enhance the operation of the evaporator assembly, protect the evaporator assembly, insulate the frozen or refrigerated food and drink items from the heat generated by the evaporator assembly, and decrease the time needed to install the cover into or remove the cover from the display refrigerator.

Abstract: In a refrigerated case for food products, having a display surface and a cool-air current that circulates around the display surface, the air current flows through a filter for filtering out airborne particles, bacteria and the like. The filter covers the clear cross section of the exit opening of a circulation channel.

Abstract: A device for maintaining a layer of cooled air over a work area, comprising a zone for processing, presentation or laying out food, said zone having an upper surface, a lower surface, a front edge where a user is optionally positioned, and lateral edges, said zone being upwardly open and in contact on its upper and lower surfaces with a layer of cooled air, a means for generating a flow of cooled air to create a layer of cooled air, an air flow channeling circuit comprising a flow delivery opening above the zone, a recovery opening to capture the air flow passing over the zone, and a flow circulation conduit connecting the delivery and recovery openings, the flow circulation conduit passing below the lower surface of the zone, wherein the air flow delivery and recovery openings are disposed laterally so that the air flow circulates between the openings, and wherein the air flow circulation conduit has a substantially horizontal section delimited on its upper part by the lower surface of the zone and is attach

Abstract: A concentrated cool air supply device for refrigerators is disclosed. In the device, a branch duct is branched from the cool air passage to guide the cool air to the door. A door duct is formed on the door to receive the cool air from the branch duct. The door duct has a plurality of air outlet openings on a cover plate. The outlet openings of the door duct are selectively opened by a slide panel, thus concentrically discharging the cool air from the door duct into a desired portion of the compartment. In order to move the slide panel, the device also has a motor, a rotatable link and a connecting rod. The link is coupled to the motor, thus being selectively rotated by the motor, while the connecting rod is connected to the link and the slide panel at both ends.

Abstract: A refrigerating counter for continuous cooling of bottles containing beverages comprises a cooling apparatus as well as means for supplying cold air to said bottles to be cooled. It is intended to offer the bottles more immediately for sale and to bring the bottles, from a "higgledy-piggledy" stacking rearmost within the cabinet, to move forwardly to a bottle take out place. The refrigerating counter comprises a plurality of vertically staggered drawers (10) for the accommodation of the bottles as a disorderly mass. The drawers (10) in the refrigerating counter (12) each has an upwardly open portion constituting the take out place for the bottles, at the front side of the counter (12). In order not to cover said take out place of one drawer by the overlying drawer (10) in a vertical column of drawers (10), the foremost, upper portion of each drawer (10) slopes downwardly/forwardly.

Abstract: A low temperature frozen food display case that allows a consumer to directly view a frozen product contained therein and which minimizes moisture loss from the frozen food. The display case provides an base member which defines a first portion of a cooling air passageway, side walls extending upwardly from the base member, inner and outer members which are sealed to the side walls and the base member and cooperate to define a second portion of the cooling air passageway. A rear wall defines a plurality of access openings which are selectively closed by pivotal doors. Each of the doors define a third portion of the cooling air passageway through which cooling air from an outlet of the passageway first portion is communicated to the passageway second portion. Food contained within the food storage compartment is not directly contacted by cold air which flows through the cooling air passageway surrounding the storage compartment and, therefore, moisture loss is reduced.

Abstract: A refrigerator display cabinet (10) for furnishing refrigerated goods has a vertical duct (20), which is surrounded by a magazine (24, 34) which is filled with the goods from above, and at its lower part is surrounded by a bottom (18), on which the goods rest and which at its periphery has an opening (38) for taking the goods out. A fan (12) is arranged to bring air which is refrigerated by a cooling element (22) to flow upwards through the duct (20) and then between goods located in the upper part of the magazine, from where the air flows downwards between goods located in the lower part of the magazine and out through holes (26) in the bottom and then back to the fan (12). Means (46) are arranged to reverse the circulation direction of the air from time to time so that the air periodically will flow in opposite direction through the display cabinet (10).

Abstract: Method for refrigerating showcases characterized by the steps of cooling air within a refrigerating unit to a temperature below the predetermined temperature in showcases and feeding said cooled air as refrigerating source into said showcases through feeding piping; mixing said cooled air with air in said showcases thereby to carry out refrigerating in said showcases while collecting said air in said showcases in the same quantity of said cooled air fed into said showcases through collecting piping into said refrigerating unit; and cooling said collected cooled air in said refrigerating unit for using again said collected and cooled air as refrigerating air.The refrigerating device according to the invention has lower initial and running costs and can effectively utilize the internal space of showcases and automatic vending machines for goods containing use.

Abstract: An air flow circulation device for use in refrigerated display cases. The device is used to provide substantially vertical cooling air flow within refrigerated cases, particularly cases having shelves. The device distributes refrigerated air through the case and particularly to upper and middle shelves.

Abstract: A refrigerated open display case achieves a laminar flow of chilled air over flowers or produce displayed therein, and establishes a laminar flow boundary layer with the warmer ambient air. There is an array of perforations serving as chilled air supply openings on each of the vertical riser walls, so that the chilled air is discharged in a laminar flow. A return air intake grille extends across the cabinet below the front of the lowermost shelf, in an undercut transverse recess. The front part of the lowermost shelf member can have a chamfer or downward slope, so that debris that falls on it drops to the floor in the front of the cabinet, where it can be routinely swept up. The recess below this chamfer can likewise have a slanting lower wall. Inside the cabinet, the coldest air leaving the evaporator coil passes in contact with the underside of the shelf members, so these shelf members are also kept chilled.

Abstract: An air cooling and control system for a refrigerated food merchandiser having an insulated cabinet with a product area having adjacent product zones, plural modular evaporator coil sections of substantially equal heat exchange potential and being of predetermined length and arranged in horizontal, spaced, end-to-end predetermined disposition and separate air moving means associated with each coil section and a corresponding product zone for circulating separate air flows through the coil sections and to the product area for cooling. The system further includes a first refrigerant metering valve for controlling liquid refrigerant flow on the high side of the evaporator sections, and a second refrigerant metering valve for controlling suction pressure and refrigerant vapor flow on the low side of the evaporator sections. An electronic control senses exit air temperatures downstream of the evaporator sections and operates the second metering valve in response thereto.