Process for optimising the position of refrigerator air guides in order to achieve increased energy efficiency of the refrigerator

1. A method for configuring an open display refrigerator, wherein air in an interior of the open display refrigerator being separated from air exterior to the open display refrigerator by an air curtain established by a fan which blows air towards an air outlet, air in the air curtain being recovered by an air inlet which recirculates the air from the air curtain into an air duct coupled to the air outlet and wherein the method comprises:

measuring an initial temperature difference between a warmest temperature and a coldest temperature recorded by an array of temperature sensors within the interior of the open display refrigerator;

coupling an air guide to an edge of a shelf within the interior of the open display refrigerator after measuring the initial temperature;

adjusting the air guide such that the air guide is spaced apart from the edge of the shelf by each of a plurality of distances;

measuring a plurality of final temperature differences, each final temperature difference from the plurality of final temperature difference measured with the air guide spaced apart from the edge of the shelf by a different distance from the plurality of distances, each final temperature difference from the plurality of final temperature differences being a difference in between a warmest temperature and a coldest temperature recorded by the array of temperature sensors; and

selecting a distance from the plurality of distances based on that distance (1) being associated with a final temperature difference that is greater than a threshold temperature difference and/or being associated with a largest final temperature difference from the plurality of final temperature differences.

2. The method of claim 1 , wherein the shelf is a first shelf, the method further comprising:

determining a maximum distance between the air guide and the edge of the shelf, the maximum distance being a distance beyond which the air guide obstructs vision of an average user from viewing an item placed on a second shelf sited below the first shelf.

3. The method of claim 1 , wherein the array of temperature sensors are disposed within a refrigerated storage space of the open display refrigerator.

4. The method of claim 3 , wherein at least one temperature sensor of the array of temperature sensors is configured to measure a temperature at the air inlet.

5. The method of claim 3 , wherein at least one temperature sensor of the array of temperatures sensors is configured to measure temperature at the air outlet.

6. The method of claim 1 , wherein the air guide is adjusted at 10 mm increments.

7. The method of claim 6 , wherein:

adjusting the air guide includes moving the air guide in a first direction such that the air guide is spaced apart from the edge of the shelf by a first distance from the plurality of distances and moving the air guide in a second direction opposite the first direction such that the air guide is spaced apart from the edge of the shelf by a second distance from the plurality of distances; and

measuring the plurality of final temperature differences includes measuring a first final temperature difference from the plurality of final temperature differences when the air guide is spaced apart from the edge of the shelf by the first distance and measuring a second final temperature difference from the plurality of final temperature differences when the air guide is spaced apart from the edge of the shelf by the second distance.

8. The method of claim 1 , wherein the air guide is coupled to the edge of the shelf at a minimum distance from the plurality of distances.

9. The method of claim 1 , further comprising measuring each distance from the plurality of distances while adjusting the air guide.

10. The method of claim 1 , wherein the air guide is an aerofoil.