Cooling apparatus employing carbon dioxide
US6584802B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Apr 16, 2002 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Apr 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D29/001
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cooling apparatus and method that employs carbon dioxide (CO2) to cool, refrigerate or freeze the contents of a cooler or container. The cooling apparatus is preferably a portable device with a selfcontained refrigeration system that cools indirectly with liquid carbon dioxide, utilizing the sublimation of CO2 “dry-snow” or “snow” to self-regulate the flow of the CO2 refrigerant in the system. The cooling apparatus includes a liquid carbon dioxide reservoir that contains a quantity of liquified carbon dioxide. A regulator for reducing the pressure of the liquid carbon dioxide flowing through the regulator, connects to the liquid carbon dioxide reservoir. The cooling coil preferably terminates with a cooling coil to vent to an atmosphere. A flow of carbon dioxide is established by a movement of the carbon dioxide from the liquid carbon dioxide reservoir, through the regulator, into the cooling coil, and to the atmosphere. A plurality of solid carbon dioxide particles formed by a freezing of the carbon dioxide within the cooling coil, and the flow of the carbon dioxide into the bleeder tube substantially blocked by the plurality of solid carbon dioxide parti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.