Merchandiser including power-generating thermal recovery system

• US 9,557,098 B2
• Filed: 01/30/2014
• Issued: 01/31/2017
• Est. Priority Date: 01/30/2014
• Status: Active Grant

• Current Assignee: Hussmann Corporation (Panasonic Holdings Corporation)
• Original Assignee: Hussmann Corporation (Panasonic Holdings Corporation)
• Inventors: Twohy, Raymond P.
• Primary Examiner(s): Walters, Ryan J
• Assistant Examiner(s): MENDOZA-WILKENFEL, ERIK
• Application Number:
  US14/168,996
• Publication Number:
  US 20150208827A1
• Time in Patent Office: 1,097 Days
• US Class Current: 1/1
• CPC Class Codes: A47F 3/0404 Cases or cabinets of the closed type A47F3/0482 takes precedence
• CPC Class Codes: A47F 3/0426 Details
• CPC Class Codes: F21S 9/04 the power supply being a generator
• CPC Class Codes: F21W 2131/305 for refrigerators
• CPC Class Codes: F21W 2131/405 for shop-windows or displays
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F25D 23/12 Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
• CPC Class Codes: F25D 27/00 Lighting arrangements in general F21
• CPC Class Codes: H10N 10/13 characterised by the heat-exchanging means at the junction

Abstract

A refrigerated merchandiser including a case defining a product display area to support product and a refrigeration system at least partially coupled to the case to condition the product display area. The case includes case structure at least partially exposed to the product display area. The merchandiser also includes a heat guide that is in communication with cold air within the product display area, and a heat source that is coupled to the case structure within the product display area. The heat source is further coupled to the heat guide by a thermal recovery device. The heat guide forms a bridge between the thermal recovery device and the cold air in the product display area such that power is generated based on a temperature difference across the thermal recovery device.

Claims

1. A refrigerated merchandiser comprising:

a case defining a product display area to support product, the case including case structure at least partially exposed to the product display area;

a refrigeration system at least partially coupled to the case to condition the product display area;

a heat source including a base coupled to the case structure within the product display area;

a heat guide supported by and extending outward from the base, the heat guide positioned to be directly exposed to and in communication with cold air within the product display area; and

wherein the heat source is further coupled to the heat guide by a thermal recovery device,

wherein the heat guide is directly coupled to the thermal recovery device and forms a structural bridge between the thermal recovery device and the cold air in the product display area such that power is generated based on a temperature difference across the thermal recovery device.

2. The refrigerated merchandiser of claim 1, wherein the case structure includes one of a shelf and a mullion, the mullion defining an opening to provide access to the product display area.

3. The refrigerated merchandiser of claim 1, wherein the heat source includes a light assembly coupled to the case structure and positioned to at least partially illuminate the product display area.

4. The refrigerated merchandiser of claim 1, wherein the thermal recovery device includes a thermo-electric generator configured to generate power based on the temperature difference across the thermo-electric generator.

5. The refrigerated merchandiser of claim 1, wherein the thermal recovery device is positioned between the heat source and the heat guide.

6. The refrigerated merchandiser of claim 5, wherein the thermal recovery device is in electrical communication with the merchandiser to at least partially power one or more electrical components disposed within the case.

7. The refrigerated merchandiser of claim 6, wherein the heat source includes an LED light assembly, and wherein the thermal recovery device is in electrical communication with the LED light assembly to least partially power the LED light assembly.

8. The refrigerated merchandiser of claim 1, wherein the base is an insulator.

9. A refrigerated merchandiser comprising:

a case defining a product display area to support product, the case including a case frame having at least one mullion defining an opening to provide access to the product display area;

a refrigeration system at least partially coupled to the case to refrigerate the product display area; and

a light assembly coupled to the mullion and positioned to at least partially illuminate the product display area, the light assembly including

an LED including a base coupled to the mullion within the product display area,

a heat guide coupled to and extending outward from the base, the heat guide positioned to be directly exposed to and in communication with cold air within the product display area, and

a thermal recovery device positioned between the LED and the heat guide to generate power based on a temperature difference between the LED and the heat guide,

wherein the heat guide is directly coupled to the thermal recovery device, and

wherein the generated power at least partially powers one or more components of the merchandiser.

10. The refrigerated merchandiser of claim 9, wherein the base supports the heat guide, the LED, and a lens of the light assembly.

11. The refrigerated merchandiser of claim 9, wherein the base acts as an insulator between the mullion and the heat guide.

12. The refrigerated merchandiser of claim 9, wherein the light assembly includes a circuit board, and wherein the thermal recovery device is coupled to the circuit board on a surface opposite a surface of the circuit board to which the LED is attached.

13. The refrigerated merchandiser of claim 9, wherein the thermal recovery device includes a thermo-electric generator.

14. A refrigerated merchandiser comprising:

a case defining a product display area to support product, the case including case structure at least partially exposed to the product display area;

a refrigeration system at least partially coupled to the case to condition the product display area;

a light assembly including a base coupled to the case structure within the product display area and including an LED positioned to at least partially illuminate the product display area;

a heat guide supported by and extending outward from the base, the heat guide positioned to be directly exposed to and in communication with cold air within the product display area;

and

a thermal recovery device positioned between the light assembly and the heat guide, the thermal recovery device directly coupled to the heat guide and configured to generate power based on a temperature difference between the LED and the heat guide to at least partially power the LED.

15. The refrigerated merchandiser of claim 14, wherein the heat guide forms a structural bridge between the thermal recovery device and the cold air in the product display area.

16. The refrigerated merchandiser of claim 14, wherein the case structure includes one of a shelf and a mullion, the mullion defining an opening to provide access to the product display area.

17. The refrigerated merchandiser of claim 14, wherein the base supports the heat guide, the LED, and a lens of the light assembly.