U.S. patent application 20180209716 (applicant PepsiCo Inc., Purchase, N.Y.):
"A cooling system having a cooling chamber including a surface defining one or more openings. A surface is configured to hold at least one container. An access door provides access to the cooling chamber. A refrigeration system is configured to cool the cooling chamber by forcing cool airflow through the one or more openings in the surface. The airflow through each of the one or more openings may be similar. ... In some embodiments of the cooling system 100, portions of the cooling chamber 200 can include a phase change material."