Refrigereated display cabinet with mixed or cross flow fan

Abstract

A refrigerated display cabinet includes a housing surrounding a plurality of shelves, a cabinet tank arranged beneath the plurality of shelves and a backwall channel positioned behind the plurality of shelves. The cabinet tank and the backwall channel cooperate to define an air passage. A micro-channel heat exchanger and a fan are arranged within the air passage. The fan being operable to move a flow of air through the heat exchanger. The fan is one of a cross-flow fan and a mixed-flow fan. The heat exchanger is arranged within the air passage at an angle between about 20 degrees and about 80 degrees or between about 100 degrees and about 160 degrees relative to the flow of air.

What is claimed is: 
     
         1 . A refrigerated display cabinet comprising:
 a housing surrounding a plurality of shelves;   a cabinet tank arranged beneath the plurality of shelves;   a backwall channel positioned behind the plurality of shelves, wherein the cabinet tank and the backwall channel cooperate to define an air passage;   a micro-channel heat exchanger arranged within the air passage; and   a fan disposed within the air passage, the fan being operable to move a flow of air through the heat exchanger, wherein the fan is one of a cross-flow fan and a mixed-flow fan;   wherein the heat exchanger is arranged within the air passage at an angle between about 20 degrees and about 80 degrees or between about 100 degrees and about 160 degrees relative to the flow of air.   
     
     
         2 . The refrigerated display cabinet of  claim 1 , wherein the fan is arranged within the cabinet tank. 
     
     
         3 . The refrigerated display cabinet of  claim 2 , wherein the heat exchanger is arranged within the cabinet tank. 
     
     
         4 . The refrigerated display cabinet of  claim 1 , wherein the heat exchanger is arranged in a forward mounting configuration. 
     
     
         5 . The refrigerated display cabinet of  claim 4 , wherein an angle of the heat exchanger is between about 20 degrees and about 80 degrees. 
     
     
         6 . The refrigerated display cabinet of  claim 1 , wherein the heat exchanger is arranged in a backward mounting configuration. 
     
     
         7 . The refrigerated display cabinet of  claim 6 , wherein an angle of the heat exchanger is between about 100 degrees and about 160 degrees. 
     
     
         8 . The refrigerated display cabinet of  claim 3 , wherein the fan is a mixed-flow fan arranged at a non-perpendicular angle relative to the flow of air through the air passage and the heat exchanger is arranged downstream from the fan. 
     
     
         9 . The refrigerated display cabinet of  claim 8 , wherein the heat exchanger axially overlaps an edge of the fan. 
     
     
         10 . The refrigerated display cabinet of  claim 1 , wherein the heat exchanger is arranged within the backwall channel. 
     
     
         11 . The refrigerated display cabinet of  claim 10 , wherein the fan is at least partially arranged within the backwall channel. 
     
     
         12 . The refrigerated display cabinet of  claim 11 , wherein the fan is a mixed-flow fan, the fan being mounted at an angle between −20 degrees and about 20 degrees. 
     
     
         13 . The refrigerated display cabinet of  claim 11 , wherein the heat exchanger is arranged downstream from the fan, the heat exchanger being arranged at an angle relative to a flow through the air passage. 
     
     
         14 . The refrigerated display cabinet of  claim 1 , wherein the heat exchanger is arranged within the cabinet tank and the fan is arranged within the backwall channel. 
     
     
         15 . The refrigerated display cabinet of  claim 1 , wherein a width of a fan inlet is between about 25% and about 75% of the width of the cabinet tank. 
     
     
         16 . The refrigerated display cabinet of  claim 1 , wherein a width of the heat exchanger is between about 50% and about 95% of the width of the cabinet tank. 
     
     
         17 . A refrigerated display cabinet comprising:
 a housing surrounding a plurality of shelves;   a cabinet tank arranged beneath the plurality of shelves;   a backwall channel positioned behind the plurality of shelves, wherein the cabinet tank and the backwall channel cooperate to defined an air passage;   a heat exchanger arranged within the air passage; and
 a fan disposed within the air passage, the fan being operable to move a flow of air through the heat exchanger; 
 wherein at least one of the fan and the heat exchanger is positioned within the cabinet tank, and a height of the cabinet tank is less than or equal to about 180 mm. 
   
     
     
         18 . The refrigerated display cabinet of  claim 17 , wherein the fan is a cross-flow fan. 
     
     
         19 . The refrigerated display cabinet of  claim 17 , wherein the fan is a mixed-flow fan. 
     
     
         20 . The refrigerated display cabinet of  claim 17 , wherein the heat exchanger is arranged at a non-perpendicular angle relative to a flow through the air passage.