Abstract: A temperature-controlled display case includes a storage tank. The storage tank includes a single-piece inner skin having an integrated locating feature formed within and configured to locate a functional component of a refrigeration system relative to the inner skin. The storage tank includes a single-piece outer skin coupled to the inner skin and having an integrated mount formed within and configured to receive a caster for mobilizing the temperature-controlled display case. The storage tank also includes a first structural frame receiving a first end of the inner skin and a first end of the outer skin, and a second structural frame receiving a second end of the inner skin and a second end of the outer skin, wherein by said receiving of the inner skin and the outer skin the first structural frame and the second structural frame are configured to couple the inner skin and the outer skin.

Abstract: A temperature-controlled display device includes a temperature-controlled space and a refrigeration circuit configured to provide cooling for the temperature-controlled space. The refrigeration circuit is configured to operate in multiple cooling modes including a normal refrigeration mode and an anti-ingression mode. A proximity sensor is configured to detect an object such as a human hand or forearm within a detection zone adjacent to a door handle of the temperature-controlled display device. A controller estimates a distance between the handle and the detected object using an input from the proximity sensor. The controller causes the refrigeration circuit to transition between the multiple cooling modes based on the estimated distance.

Abstract: A refrigeration system for a temperature-controlled storage device includes a refrigeration circuit, a cooling circuit, and a controller. The refrigeration circuit includes a compressor driven by a brushless DC motor operable at multiple different speeds, a first heat exchanger, an expansion device, and a cooling unit in fluid communication via a first working fluid. The cooling circuit includes a pump and a second heat exchanger in fluid communication with the first heat exchanger via a second working fluid such that the first heat exchanger is liquid-cooled by the second working fluid. The controller operates the brushless DC motor at multiple different speeds to accommodate multiple different thermal loads experienced by the refrigeration system. Each of the speeds corresponds to a different thermal load. The controller modulates the speed of the brushless DC motor to maintain a desired temperature of a temperature-controlled space within the temperature-controlled device.

Abstract: An evaporative condensate dissipation system is configured to receive a liquid condensate from an external surface of a cooling element of a refrigeration system and to dissipate the liquid condensate by evaporation. The evaporative condensate dissipation system includes one or more walls constructed from a porous material configured to absorb the liquid condensate and to retain the liquid condensate within the porous material. The evaporative condensate dissipation system further includes a fan configured to generate an airflow and positioned to cause the airflow to pass through the one or more walls. The one or more walls are sufficiently permeable to allow the airflow to pass therethrough. The airflow evaporates the liquid condensate retained within the porous material of the one or more walls.

Abstract: An air cooling system for a temperature-controlled display case includes at least two modular cooling elements, one or more fans configured to provide an air flow to the at least two modular cooling elements, and an air plenum common to each of the one or more fans and the at least two modular cooling elements, the air plenum being configured to direct the air flow from the one or more fans through the at least two modular cooling elements and into a product area of the temperature-controlled display case.

Abstract: A temperature-controlled display device includes a temperature-controlled space and a refrigeration circuit configured to provide cooling for the temperature-controlled space. The refrigeration circuit is configured to operate in multiple cooling modes including a normal refrigeration mode and an anti-ingression mode. A proximity sensor is configured to detect an object such as a human hand or forearm within a detection zone adjacent to a door handle of the temperature-controlled display device. A controller estimates a distance between the handle and the detected object using an input from the proximity sensor. The controller causes the refrigeration circuit to transition between the multiple cooling modes based on the estimated distance.

Abstract: A temperature-controlled case is provided including a rear wall spaced apart from an intermediate wall, forming a cavity therebetween. The intermediate wall includes a first set of openings disposed below a second set of openings. A deck may be disposed proximate to the first set and the shelves proximate to the second set of openings. Each shelf may include a shelf base and cover, the cover having openings through which air may be directed. An air distribution system having an air diverting device provides for improved air flow and cooling of products within the case. The air diverting device directs a first portion of an air flow toward the deck and permits a second portion to be directed toward the shelves. The air diverting device may direct the first portion of the air flow through the cavity and towards the deck, or away from the cavity and towards the deck.

Abstract: A temperature-controlled case is provided including a rear wall spaced apart from an intermediate wall, forming a cavity therebetween. The intermediate wall includes a first set of openings disposed below a second set of openings. A deck may be disposed proximate to the first set and the shelves proximate to the second set of openings. Each shelf may include a shelf base and cover, the cover having openings through which air may be directed. An air distribution system having an air diverting device provides for improved air flow and cooling of products within the case. The air diverting device directs a first portion of an air flow toward the deck and permits a second portion to be directed toward the shelves. The air diverting device may direct the first portion of the air flow through the cavity and towards the deck, or away from the cavity and towards the deck.

Abstract: A temperature-controlled case is provided including a base having a deck, a tower having a cavity, and an improved air distribution system. The air distribution system provides enhanced air flow throughout the case and a more balanced cooling profile to maintain products at a more uniform temperature. The air distribution system may include a duct and/or one or more air diverting devices, such as scoops, to permit a first portion of an air flow to be received into the tower and to direct second portion toward the deck. Sub-portions of the first portion may be directed at the rear portions and the front portions of one or more product supporting surfaces. The tower may include an exterior wall having openings through which air is directed by diffusers. The exterior wall may be faceted and the cavity may be segmented into channels corresponding to the facets.