Refrigeration – Refrigeration producer – Sorbent type
Patent
1989-08-02
1991-04-16
King, Lloyd L.
Refrigeration
Refrigeration producer
Sorbent type
F25B 1500
Patent
active
050072510
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an installation for air-conditioning by absorption designed to use more particularly either the heat rejected by an engine or like apparatus, or solar energy, and adapted to be used either in fixed form or embarked on a vehicle.
An installation for air-conditioning by absorption principally comprises a heater heated to high temperature, from any source of heat, in which a refrigerating fluid is driven by vaporization, a condenser in which the refrigerating fluid is liquefied, an evaporator in which the liquid refrigerant is vaporized to produce the desired cold and an absorber in which the gaseous refrigerant is re-absorbed in the depleted solution before being returned to the heater via a pump. The heater and the condenser of such an installation function at a high pressure which is the pressure of condensation of the refrigerating fluid, whilst the evaporator and the absorber function at a low pressure which is the pressure of evaporation of the refrigerating fluid. The high- and low-pressure circuits are connected by one or more pumps and pressure reducing valves which may be atomizers.
Installations for air-conditioning by absorption of this type are already known, as described for example in Patent FR-A 1 325 938.
The present invention relates to improvements to such an installation for the purpose of rendering it compact, which facilitates its use on board a vehicle, and of increasing its output.
To that end, this installation for air-conditioning by absorption comprising a high-pressure enclosure containing a heater heated to high temperature, in which a refrigerating fluid is driven by vaporization, and a condenser on which the refrigerating fluid is liquefied, and a low-pressure enclosure containing an evaporator on which the liquid refrigerant is vaporized to produce the desired cold and an absorber on which the gaseous refrigerant is re-absorbed in the depleted solution before being returned to the heater via a pump, is characterized in that the two high-pressure and low-pressure enclosures each have a generally toric-shaped casing with a common vertical axis, the high-pressure enclosure being located above the low-pressure enclosure and cooling means are arranged in the central free space delimited by the cylindrical inner walls of the two casings of the two enclosures, in order to ensure the partial or total exchange of the heat energy produced by condensation, absorption and possibly evaporation.
Various embodiments of the present invention will be described hereinafter by way of non-limiting examples, with reference to the accompanying drawings, in which:
FIG. 1 is a view in axial and vertical section of an intallation for air-conditioning by absorption according to the invention.
FIG. 2 is a plan view of the air-conditioning installation of FIG. 1.
FIG. 3 is a view in axial and vertical section of another variant embodiment of the installation for air-conditioning by absorption in the case of it being embarked on a vehicle.
FIG. 4 is a view in axial and vertical section of another variant embodiment of the installation for air-conditioning by absorption according to the invention.
If reference is made to FIGS. 1 and 2, it is seen that these Figures represent an installation for air-conditioning by absorption, comprising two superposed assemblies, namely an upper enclosure 1 at high pressure Pc and a lower enclosure 2 at low pressure Po. These two enclosures and 2 each have a casing of generally toric shape with a common vertical axis. The casings of the two enclosures 1, 2 comprise respective outer cylindrical walls 1a, 2a and respective inner cylindrical walls 1b, 2b.
The upper high-pressure enclosure 1 also comprises an upper annular horizontal wall 1c and a lower annular wall constituting the inner truncated bottom 1d, converging upwardly, delimiting the active part proper of the enclosure 1. The four walls 1a, 1b, 1c, 1d enclose a heater 5, a condenser 6 and, at the bottom, an exchanger of solutions 7. The upper, high-pressure enclosure rests on the lowe
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Dehausse Robert
Thuez Jean-Luc
A.R.M.I.N.E.S.
King Lloyd L.
LandOfFree
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