Air conditioning and refrigeration apparatus utilizing a cryogen
November 27, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3621673 3802212 CO2 Cooling of vehicles CO2 vehicle refrigeration support systems Cryogenic refrigeration for vehicles Refrigerated transport Parallel expansion valve system for energy efficient air conditioning system Heat pipe with temperature gradient Process and device for regulating a flow of liquid CO2, and application thereof in a cooling tunnel Carbon dioxide refrigeration system InventorsAssigneeApplicationNo. 982370 filed on 11/27/1992US Classes:165/64, Heat generator62/54.1, Cryogen stored in both phases (e.g., as slush or gel)62/156, By temperature62/239, WITH VEHICLE FEATURE62/333, Primary and secondary dependent circuits165/61Heating and cooling of the same materialExaminersPrimary: Rivell, JohnAttorney, Agent or FirmInternational ClassF25B 029/00AbstractA refrigeration system associated with a conditioned space to be controlled to a predetermined set point temperature via heating and cooling cycles. The refrigeration system includes a fluid flow path through which a predetermined liquid is circulated. The fluid flow path includes a slush tank and first and second heat exchangers, with cryogen from a supply vessel being expanded into liquid disposed in the slush tank. The first heat exchanger is disposed to condition the air of the conditioned space, and the second heat exchanger is in heat exchange relation with heating apparatus. The first heat exchanger and slush tank are interconnected when the conditioned space requires a cooling cycle, and the first and second heat exchangers are interconnected when the conditioned space requires a heating cycle. Cryogen of the cryogenic cooling apparatus is thus not expended to heat the conditioned space, or for defrosting purposes.Field of SearchHEATING AND COOLINGHeating and cooling of the same material Refrigerating system conversion Heat generator By temperature Selective heating or cooling Through an evaporator, i.e., parallel WITH VEHICLE FEATURE Primary and secondary dependent circuits Cryogen stored in both phases (e.g., as slush or gel) | |
