Refrigeration – Refrigeration producer – Sorbent type
Patent
1991-10-21
1994-07-05
Bennett, Henry A.
Refrigeration
Refrigeration producer
Sorbent type
62476, F25B 3700, B01D 5318, F28D 702
Patent
active
053256840
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an absorber for a diffusion absorption plant.
2. Description of the Prior Art
Diffusion absorption plants are for a long time known as small refrigeration plants for use in domestic refrigerators. The absorption refrigeration plants have decisively been improved regarding their efficiency. Such an apparatus is extensively described e.g. in the Swiss Patent No. 475 527. These apparatuses have, however, a relatively small output. Therefore, they are not suitable for larger refrigeration plants, e.g. for an air conditioning or for the use as heat pumps in heating plants. In these plants ammonia and water are used as pairs of material, whereby water represents the absorbing material and ammonia the refrigerant. Generally, hydrogen or helium is used as pressure equalizing auxiliary gas. Absorbers in plants which must bring a high output must be in a position to absorb the hereto necessary large amounts of refrigerants and to transfer the heat of the absorption with as little as possible losses of the medium to be heated. In the known diffusion absorption plants of low output the heat of the absorption is transferred to the environmental air. In case of large plants this is as a rule not possible or undesired, the heat of absorption shall rather be disposed of by means of a secondary system with a liquid medium.
SUMMARY OF THE INVENTION
Object of the present invention is, therefore, to provide an absorber for a large output diffusion plant.
This object is reached by means of an absorber of the kind mentioned above in that a tube coil is located in a cylindrical housing, of which the surface is capillary active, whereby the individual windings of the tube coil are at a distance from each other.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings, wherein:
FIG. 1 is a schematic illustration of a large output diffusion absorption plant;
FIG. 2 is a partly cut open partial view of an absorber; and
FIG. 3 is a top view of an absorber according to FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1 the scheme of a large output diffusion absorption plant is illustrated. Such an apparatus includes a gas burner 1 or other heat source, an expeller with a gas-bubble pump 2, in which the refrigerant vapor is expelled. This vapor arrives via a triple heat exchanger 2a through a vapor conduit in the condenser 4. Here the refrigerant vapor condenses and the condensate flows through a condensate conduit into an evaporater 5 where it evaporates at an absorbing of heat. The auxiliary gas which has grown rich due to the evaporation flows into a gas heat exchanger 6 and cools the weak gas flowing thereinto. The rich gas flows afterwards into an absorber 3, where a part of the refrigerant vapor is absorbed by the weak solution. The solution which has grown rich due to the absorption arrives via the triple heat exchanger in the expeller. The refrigerant is here expelled such as described and the solution which due to such has grown weak is pumped upwards by the gas-bubble pump and is accordingly enabled to flow on top into the absorber, whereby ahead of this the weak solution is also led through the triple heat exchanger 2a. The medium of a secondary system flows through the absorber 3 and the condenser 4 which absorbs there heat at a high temperature level. The medium of a further secondary system flows through the evaporator 5 which transfers heat to this medium at a low temperature level.
An absorber is illustrated in FIG. 2. This absorber consists of four coaxially arranged tube coils 9 to 12, whereby the outermost coil 9 is visible and the inner coils 10 to 12 can be recognized in cross section in the cut-open part of the drawing. FIG. 3 illustrates the coaxial arrangement in a top view from above. The
REFERENCES:
patent: 1979482 (1934-11-01), Kohler
patent: 1993518 (1935-03-01), Maluri
patent: 2583769 (1952-01-01), Gaugler
patent: 4127009 (1978-11-01), Phillips
patent: 4193268 (1980-03-01), Phillips
Ferguson John R.
Stierlin Hans
Bennett Henry A.
Doerrler William C.
Stierlin Hans
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