Multi-well food presentation modules

Abstract

Thermally convertible food presentation modules are described. A single module may be used for both heating and refrigeration of foodstuffs as desired at any given time. Any well of a module may be switched between heating and cooling of food regardless of the status of any other well of the module.

Claims

1. A food presentation module generally immobile in use, comprising: a. a frame; b. a plurality of wells mounted in the frame, each well configured for receiving a container of bulk food, each of the wells having an open access area to expose food received therein to the ambient environment, each of the wells being isolated thermally from an adjacent well such that at least one exterior wall of one well is spaced an insulative distance from an exterior wall of an adjacent well; c. each well in the plurality of wells in thermal contact with (i) a heatable thermal blanket and (ii) one or more refrigerant pipes; and d. a system for controlling temperatures of the plurality of wells independently, such that the temperature-control system allows a food container received in each well to be refrigerated or heated and to switch between being refrigerated or heated independently of the temperature status of any other well in the plurality of wells, wherein heating of each well is accomplished via the heatable thermal blanket, and wherein cooling of each well is accomplished via flowing refrigerant from a condensing unit into the one or more refrigerant pipes.

2. A module according to claim 1, where in the plurality of wells comprise first, second, and third wells, each well for receiving a container of food and in which the temperature-control system controls temperature of the first well independently from temperatures of the second and third wells, the temperature of the second well independently from the temperatures of the first and third wells, and the temperatures of third well independently of temperatures of the first and second wells.

3. A module according to claim 1, in which each of the wells in the plurality of wells defines a floor, further comprising the thermal blanket attached to each floor.

4. A module according to claim 3 in which each thermal blanket comprises silicone rubber.

5. A module according to claim 4 in which each floor is sloped so as to direct any fluid otherwise tending to accumulate on the floor toward an exit for draining.

6. A module according to claim 5 further comprising a heating element located between each floor and the thermal blanket attached thereto.

7. A module according to claim 6 in which each of the wells in the plurality of wells further defines a plurality of generally vertically-extending interior walls, wherein the at least one refrigerant pipe contacts each interior wall, such at least one pipe configured to contain refrigeration fluid.

8. A module according to claim 7 in which each of the wells in the plurality of wells further comprises a plurality of generally vertically-extending exterior walls spaced from corresponding interior walls.

9. A module according to claim 8 in which the wells are spaced by a distance of approximately three inches.

10. A module according to claim 8, in which the wells are spaced by a distance of approximately two inches.

11. A food presentation module, comprising: a frame; and a plurality of wells, each well configured for receiving a container of food, each well mounted in the frame and isolated thermally from adjacent wells, each well comprising interior side walls, exterior side walls, and a bottom wall, with cooling features that circulate refrigerant from a condensing unit positioned between the interior and exterior side walls, and a thermal heating blanket associated with the bottom wall, such that each well in the plurality of wells is in thermal contact with the cooling features and with the thermal heating blanket.

12. The module of claim 11, wherein the plurality of wells comprises four wells.

13. The module of claim 11, wherein the plurality of wells are spaced about two inches apart from one another.

14. A method of presenting food for consumption by persons, the method comprising: a. providing a fixed-position food presentation module comprising a frame and a plurality of wells, each well configured for receiving a container of food, such wells being uncovered in use so as to expose the food containers to the ambient environment, each well being mounted in the frame and isolated thermally from adjacent wells, each well in thermal contact with one or more cooling features that circulate refrigerant from a condensing unit and a thermal heating blanket; and b. heating a first well while simultaneously refrigerating an adjacent well, refrigerating the first well while simultaneously heating the adjacent well, heating both wells, or refrigerating both wells, wherein the each of the wells in the plurality of wells is configured to switch between being refrigerated or heated.

15. A method according to claim 14 in which temperature of food received in the first well is maintained at temperature of at least 150° F. while temperature of food received in the adjacent well is maintained at temperature of no more than 41° F.

16. A method according to claim 14 further comprising subsequently refrigerating the first well.

17. A method according to claim 14 further comprising subsequently heating the adjacent well.

18. A method according to claim 16 further comprising heating the adjacent well simultaneously with refrigerating the first well.

19. The method of claim 14, where each well comprises interior walls and exterior walls with the cooling features positioned the between the interior and exterior walls.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a top view of an exemplary food presentation module of the present invention.

(2) FIG. 2 is a perspective view of, principally, the front of the module of FIG. 1.

(3) FIG. 3 is a perspective view of, principally, the rear of the module of FIG. 1.

(4) FIG. 4 is a front elevational view of the module of FIG. 1.

(5) FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1.

(6) FIG. 6 is a perspective, cut-away view of a well of the module of FIG. 1.

DETAILED DESCRIPTION

(7) Detailed in FIGS. 1-5 is food presentation module 10 of the present invention. As depicted, module 10 includes a frame 12 having a generally planar upper surface 14 from which multiple wells 18 (see FIG. 6) depend. Although module 10 is shown as having four such wells 18A-D, more or fewer wells 18 may be incorporated instead. Adjacent wells 18 typically are spaced distance D1 along length L of module 10, with D1 preferably being approximately three inches and L preferably being approximately fifty-eight and one-half inches. Again, however, values of D1 and L different from these preferred values may be selected. (Indeed, although the value of D1 preferably is uniform between adjacent wells 18 of a module 10, it need not necessary be uniform and instead may vary along length L.)

(8) FIG. 6 illustrates, in cross-section, certain aspects of well 18. Well 18 may comprise generally vertically-extending interior walls 22 connected by bottom or floor 26. Four such walls 22 typically are present in well 18, with three (22A-C) of the four shown in FIG. 6. Well 18 additionally may comprise four exterior walls 30, again with three (30A-C) of these walls being shown in FIG. 6. Each exterior wall 30 preferably is spaced a distance D2 from its corresponding interior wall 22 so as to form an insulative air gap A therebetween. A preferred value for D2 is two inches, although it may differ from the preferred value as desired. Upper surface 36 may interconnect the various interior and exterior walls 22 and 30, respectively. Additionally, well 18 preferably—although not necessarily—is formed of stainless steel. Because each well 18 lacks a lid or door, bulk food placed therein is (intentionally) exposed to the ambient environment for easy access by consumers.

(9) Positioned within air gap A may be one or tubes coils or pipes 40. Such pipes 40 advantageously contact external sides 44 of interior walls 22 for more efficient transfer of thermal energy between the pipes 40 and well 18. Three pipes 40A-C are depicted in FIG. 6 spaced along height H of well 18, although greater or fewer such pipes 40 may be employed instead. Likewise, although pipes 40A-C preferably are made of copper and approximately one-half inch in diameter, other materials and sizes may be utilized instead.

(10) Also detailed in FIG. 6 is the non-flat nature of floor 26. Floor 26 may comprise multiple areas 46A-D, with areas 46A and 46D being generally flat. Between areas 46A and 46D, in area 46B floor 26 rises to its highest level (at HL) before sloping in area 46C down to the level of area 46D. One or more drains preferably is located in area 46D of floor 26 so as to allow fluid to exit well 18.

(11) Attached to interior surface 48 of floor 26 may be thermal blanket 52. Blanket 52 beneficially is made of silicone rubber so as to provide good heat transfer therethrough. Other heat conducting materials may be used instead, however. A Vulcanization process is preferred for attaching blanket 52 to floor 26, although other processes or connection mechanisms may be employed.

(12) Captured between blanket 52 and floor 26 is at least one heating mechanism, preferably an electrical-resistance type element. Blanket 52 disperses heat from the element into well 18 relatively efficiently and uniformly, reducing likelihood of substantial heat leakage into adjacent wells 18. Similarly, air gaps A help reduce thermal leakage (from either or both of blanket 52 and pipes 40) from a well 18 into adjacent wells.

(13) Heating and cooling of any well 18 may occur regardless of the thermal status of any other well 18 within module 10. Electronic system controls 56 exist for each well 18 of a module 10. FIG. 2 illustrates an exemplary interface plate for four controls 56A-D, with one control present for each of wells 18A-D.

(14) Hence, if a particular well (e.g. well 18A) of module 10 is to be heated, its associated control 56A may be used to connect the heating element in floor 26 of well 18A to a source of electricity. Such source typically will be an electrical outlet of the building housing module 10, although it conceivably could be a battery or other source located within module 10 itself.

(15) Conversely, if the particular well 18A is to be cooled, control 56A may be employed to operate condensing unit 60 in a manner causing refrigerant to flow through pipes 40 contacting interior walls 22 of the well 18A. Normally only one condensing unit 60 is needed for a module 10; in such case, it need merely be configured so that valving precludes refrigerant flow through pipes 40 not intended to be actively cooling at any given time. Controls 56A-D may, if desired, display or otherwise provide real-time temperature information about their corresponding wells 18A-D. Also if desired, they additionally may prevent concurrent heating and cooling of a well 18 so as to avoid inadvertent waste of energy.

(16) In at least one version of module 10, well 18 has dimensions of approximately 12″×20″×6″ and is designed to receive a foodstuff-containing pan. Consistent with various standards such Nos. 4 and 7 of the NSF, each well 18 readily may maintain the foodstuff at 150° F. (for product needing to be heated) or at 41° F. (for product needing to be refrigerated). Indeed, tests indicate that, with one well 18 maintaining foodstuff at 150° F., an adjacent well 18 may maintain cold food at 10° F. or less.

(17) Module 10 thus provides a versatile, multi-purpose device capable of simultaneously presenting hot food, cold food, and combinations thereof in bulk for ready access by consumers, who select portions of the food for placement on their individual plates. Further, module 10 may in some cases be employed for purposes other than food presentation. Indeed, module 10 may be useful in presenting other materials that need heating or cooling. Preferably, module 10 has its positioned fixed and is generally immobile in use, although it may include castors or wheels enabling its movement between uses.

(18) The foregoing is provided for purposes of illustrating, explaining, and describing embodiments of the present invention. Modifications and adaptations to these embodiments will be apparent to those skilled in the art and may be made without departing from the scope or spirit of the invention.