Air cooled display case shelf

a display case and air cooling technology, applied in the field of refrigerated display cases, can solve the problems of unbalanced, inefficient refrigeration system, unsatisfactory drying of products,

Inactive Publication Date: 2010-08-05
HILL PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this manner, cooled air is circulated within the display chamber without the use of a fan, which would undesirably dry the product.
The majority of the refrigerant load is associated with the gravity coil, which results in an unbalanced, inefficient refrigeration system.

Method used

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  • Air cooled display case shelf
  • Air cooled display case shelf
  • Air cooled display case shelf

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0011]A refrigerated display case 10 is shown in FIGS. 1 and 3. The display case 10 includes a display chamber 12 used for supporting products 14, such as meat.

[0012]The display chamber 12 includes a display window 16 through which customers view the products 14. The display chamber 12 is accessible through access panels 18 opposite the display window 16. Typically, an air curtain device 22 that includes a fan 24 blows an air curtain A across the display window 16 to minimize the heat transfer to the display chamber 12 through the display window 16.

[0013]An example refrigerant system 26 is schematically shown in FIG. 2. The refrigerant system 26 includes a gravity coil 36 (also shown in FIGS. 1 and 3) arranged in the display window 16. The gravity coil 36 cools the products 14 by radiation thereby generating a buoyancy circulation B, which is shown in FIG. 3. As the air display chamber 12 cools and becomes more dense, it flows to the bottom of the display chamber 12 where it removes...

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PUM

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Abstract

A refrigerated display case is provided that includes a display chamber for displaying product. The display chamber includes a product tray for supporting the product. A cooling chamber is arranged beneath the product and is in communication with a surface of the product tray. The cooling chamber is sealed from the display chamber, in one example, and includes a cooling coil. A fan is in communication with the cooling chamber and cooling coil. The fan circulates a cooling flow through the cooling coil. The cooling flow moves across the surface and absorbs heat from the product tray by convection. The cooled product tray removes heat from the product by conduction.

Description

BACKGROUND OF THE INVENTION[0001]This application relates to a refrigerated display case for refrigerating and displaying food products.[0002]Refrigerated display cases are used to refrigerate and display products such as meat at a grocery store. The products are displayed to customers in a display chamber that is cooled by a gravity coil. The gravity coil cools the product by buoyancy circulation in which the cooled air produced by the gravity coil moves downward toward the product as it becomes more dense. As the cooled air absorbs heat from the product, the warmed air rises toward the gravity coil where it is again cooled. In this manner, cooled air is circulated within the display chamber without the use of a fan, which would undesirably dry the product.[0003]The product is supported on a product tray. A serpentine coil is arranged in a cooling chamber beneath the product tray. The serpentine coil and gravity coil are connected in series. The serpentine coil has no fins and typi...

Claims

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Application Information

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IPC IPC(8): F25D17/06A47F3/04F25B1/00F28D7/02
CPCA47F3/0413
InventorSCHENK, CHARLES R.GUPTE, NEELKANTH S.
OwnerHILL PHOENIX