Refrigeration – Refrigeration producer – Sorbent type
Patent
1992-01-29
1994-03-08
Bennet, Henry A.
Refrigeration
Refrigeration producer
Sorbent type
62107, 417208, 417 65, F25B 1500
Patent
active
052917541
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field Of The Invention
The present invention relates to an expeller with a gas-bubble pump for a diffusion absorption plant.
2. Description Of The Prior Art
Diffusion absorption plants, i.e. absorption plants with a pressure equalizing auxiliary gas are known since a long time as small refrigeration plants for use in domestic refrigerators. These absorption refrigeration apparatuses have been decisively improved regarding their efficiency, such an apparatus is e.g. extensively described in the Swiss patent no. 475 527. The improvement of the efficiency has been reached substantially by the expeller disclosed therein. If the expeller is equipped with a gas-bubble pump such as is also the case of the plant of the mentioned patent, no moving parts such as e.g. motor driven solution pumps are necessary. The diffusion absorption plants used in domestic refrigerators display, however, a relatively low output. Therefore, they are not suitable for large plants, e.g. for an air conditioning or for use as heat pumps in heating plants.
In diffusion absorption plants of a large output it is also necessary to convey a large quantity of heat to the expeller. The gas-bubble pump must be designed such that it can pump the liquid to a considerable height in order to provide the solution turnover with the necessary driving force. The attempt to simply increase the expellers with gas-bubble pumps for diffusion absorption plants of a large output used in domestic refrigerators must fail since the pump tube of the gas-bubble pump is not allowed to exceed a certain diameter because otherwise the slip between the gas bubbles and the liquid to be conveyed is too large and only quite small pumping heights are reached. It must be noted, additionally, that the gas-bubble pump is not only able to function in the operating state but handles also the quite critical starting process during the start-up.
SUMMARY OF THE INVENTION
Accordingly, it is the object of the present invention to provide an expeller with a gas-bubble pump for use in diffusion absorption plants of a large output.
An object is to provide an expeller with a gas-bubble pump of the kind mentioned above, in which three or more pump tubes are arranged on an arc of a circle, whereby a same number of flame tubes, alternating with the pump tubes are also arranged on a circle and contact same.
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 drawing wherein:
FIG. 1 is a schematic illustration of a diffusion absorption plant of a large output having an expeller and a gas-bubble pump in accordance with this invention;
FIG. 2 is a longitudinal section of the expeller with a gas-bubble pump;
FIG. 3 is a cross section at the upper,
FIG. 4 is at the center and
FIG. 5 is at the lower area of the expeller with a gas-bubble pump.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The scheme of a diffusion absorption plant of a large output is illustrated in FIG. 1. Such an apparatus includes a gas burner 1 or another heat source, an expeller with a gas-bubble pump, in which the refrigerant vapor is driven out. 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 evaporator 5, where it evaporates at a simultaneous absorption of heat. The auxiliary gas which has become rich due to the evaporation flows into a gas heat exchanger 6 and cools there the inflowing weak gas. The rich gas flows thereafter into an absorber 3 where a part of the refrigerant vapor is absorbed by the weak solution. The solution which has grown rich by the process of the absorption reaches via the triple heat exchanger 2a the expeller 2. The refrigerant is here driven out such as mentioned and the solution which thereby has gotte
REFERENCES:
patent: 2363771 (1944-11-01), Bergholm
patent: 2894380 (1959-07-01), Palmatier
patent: 4527956 (1985-07-01), Baumberg
Bennet Henry A.
Doerrler William C.
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