Standex International Corporation
Controlled defrost for refrigeration systems

Abstract:

Defrosting refrigeration equipment meeting the strict requirements for storage of vaccines provided by the Center for Disease Control, California Vaccine for Children, American Academy of Pediatrics, Vaccines for Children (VFC) and the North Dakota Department of Health among others. Vaccine refrigeration storage must maintain consistent temperatures between -58 degrees Fahrenheit and 5 degrees Fahrenheit. The invention utilizes temperature variation moderating heat reservoirs consisting of high specific or latent heat capacity materials to significantly reduce the cycle temperature variation while maintaining the ability to successfully defrost the freezer.