Refrigerated merchandiser with flow baffle
A refrigerated merchandiser ( 100 ) includes an upright, open-front, insulated cabinet ( 110 ) defining a product display area ( 125 ) connected in airflow communication with a compartment ( 120 ) via an air circulation circuit ( 122, 114, 116 ). An evaporator ( 40 ) and a plurality of spaced fans ( 70 ) are disposed in a forced draft arrangement within compartment ( 120 ) with flow baffle ( 150 ) disposed therebetween to provide increased flow resistance whereby a more uniform velocity profile is provided entering the evaporator.
1. A refrigerated merchandiser system comprising:
an insulated cabinet defining a product display area and having a compartment separate from product display area;
an air circulation circuit connecting said product display area and said compartment in air flow communication;
an evaporator disposed within said compartment;
at least one of air circulating fan disposed within said compartment in laterally spaced relationship upstream of the evaporator with respect to air flow;
a flow baffle having a plurality of flow apertures extending therethrough, said flow baffle disposed in and generally transversely across the air circulation circuit intermediate the evaporator and the at least one fan to provide a generally more uniform air flow entering the evaporator.
2. A refrigerated merchandiser system as recited in claim 1 wherein the evaporator comprises a tin and tube heat exchanger having a fin density in the range of 6 fins per inch to 15 fins per inch.
3. A refrigerated merchandiser system as recited in claim 1 wherein said flow baffle comprises at least one perforated member.
4. A refrigerated merchandiser system as recited in claim 1 wherein said flow baffle comprises at least one screen mesh member.
5. A refrigerated merchandiser system as recited in claim 1 wherein said flow baffle comprises at least one slotted member.
6. A refrigerated merchandiser system as recited in claim 1 wherein said flow baffle comprises at least one member having a honeycomb structure of flow passages therethrough.
7. A refrigerated merchandiser system as recited in claim 1 wherein comprising:
an insulated cabinet defining a product display area and having a compartment separate from product display area;
an air circulation circuit connecting said product display area and said compartment in air flow communication;
an evaporator disposed within said compartment;
at least one air circulating fan disposed within said compartment upstream of the evaporator with respect to air flow;
a flow baffle having a plurality of flow apertures extending therethrough, said flow baffle disposed in the air circulation circuit intermediate the evaporator and the at least one fan to provide a generally more uniform air flow entering the evaporator,
said plurality of flow apertures extending through said flow baffle having a collective flow area comprising from about 15% to about 40% of the nominal flow area of the air circulation circuit between said fans and said evaporator.