Vacuum interconnect for heating and cooling unit

Details Vacuum interconnect for heating and cooling unit Vacuum interconnect for heating and cooling unit

1977-07-27

1978-11-21

King, Lloyd L.

Refrigeration

Cooled enclosure

Portable receptacle

62294, 62480, 165 2, 165105, F25D 308, F25D 310, F25B 1708, F25B 1300

Patent

active

041260163

ABSTRACT:
The heating and cooling apparatus comprises two vessels connected by a conduit, the first containing a vaporizable liquid, for example, water, and the second containing a vapor-absorptive chemical such as magnesium chloride. Liquid evaporates from the first vessel, and the vapor from this evaporation passing through the conduit is absorbed in the vapor-absorptive chemical. This process is exothermic at the vapor-absorptive container and endothermic at the vaporizing container, and is thus useful for cooling or heating other materials. The conduit connecting these vessels must be evacuated so that other gases do not interfere with the vapor process. By this means the pressure within the conduit can be determined solely by the vapor pressure of the evaporating liquid. The present invention permits the operation of a very simple valve which assures maintenance of the vacuum in the conduit before and during operation of the refrigeration cycle. One embodiment of the present invention comprises a valve and interconnect which allows the conduit to be formed as two pieces, one connected to each of the vessels. This interconnect and valve seals each of the conduit segments prior to interconnection and permits interconnection of the evacuated conduit sections without introducing any air to the conduit. Another embodiment of the present invention provides an extremely simple and inexpensive valve for fluidly interconnecting the pair of vessels while maintaining the vacuum integrity, but in this embodiment the vessels are manufactured and evacuated while mechanically joined by the conduit and remain mechanically connected prior to and during use.

REFERENCES:
patent: 2144441 (1939-01-01), Schlumbohm
patent: 3414050 (1968-12-01), Anand
patent: 3642059 (1972-02-01), Greiner
patent: 3970068 (1976-07-01), Sato
patent: 4054037 (1977-10-01), Yoder

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