Distillation: apparatus – Apparatus – Systems
Patent
1995-03-14
1997-05-20
Manoharan, Virginia
Distillation: apparatus
Apparatus
Systems
159901, 159DIG16, 159DIG30, 159DIG40, 202167, 202182, 2021853, 202197, 202202, 202205, 203 4, 203 11, 203 39, 203 91, 203DIG4, B01D 310, C02F 104, C02F 120
Patent
active
056309139
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to water purification systems and, in particular, to a water distillation system which is substantially more efficient than known systems.
BACKGROUND ART
There are a variety of methods of purifying water, one of these methods being distillation. One method of distilling water includes vaporising the liquid water under a vacuum and then condensing the water vapour, once again under vacuum so that the liquid water which has been condensed does not include any impurities.
OBJECT OF THE INVENTION
It is an object of the present invention to provide a water distillation system which is substantially inexpensive to install, and is relatively efficient.
DISCLOSURE OF THE INVENTION
According to one aspect of the present invention there is disclosed a water distillation system comprising: evaporator, condenser and tank are connected in series so that water passes from the evaporator to the tank via the condenser; atmosphere; which refrigerant from said refrigerant condenser passes to said refrigerant evaporator; condenser to said refrigerant evaporator; and cool water located in said tank, said heat exchanger being positioned operatively after said throttle means and before said compressor relative to the direction of flow of the refrigerant.
BRIEF DESCRIPTION OF THE DRAWINGS
Some embodiments of the present invention will now be described with reference to the drawings in which:
FIG. 1 is a schematic diagram of a water distillation system of a first embodiment;
FIG. 2 is a cutaway front view of the water distillation system of FIG. 1 illustrating the layout of the system in a housing;
FIG. 3 is a left side view of the housing of FIG. 2, with side panels removed;
FIG. 4 is a rear view of the housing of FIG. 2; and
FIG. 5 is a schematic diagram of a water distillation system of a second embodiment.
BEST MODE OF CARRYING OUT THE INVENTION
A water distillation system 10 of a preferred embodiment includes a boiling chamber or evaporator 11 and a condensation chamber 12. Water is fed via an inlet pipe 13 having a solenoid valve 14 to a degassing chamber 15 where volatile gases are removed from the water. The degassing chamber 15 and the boiling chamber 11 have a pair of connecting pipes 16 and 17. As the boiling chamber 11 and degassing chamber 15 are positioned at the same level, the water level 18 within the chambers 11 and 15 is the same and controlled by level switches 19 and 20.
The boiling chamber 11 is connected by a vapour outlet pipe 21 to the condensation chamber 12. The boiling chamber 11 also has a concentrate outlet 22 which is opened and closed by a solenoid valve 23. Another solenoid valve 24 is attached to an air inlet 25 at the top of the degassing chamber 15. The bottom of the condensation chamber 12 has an outlet pipe 26 which is connected to an entrainment device 27 which entrains the condensate therein. A pump 28 connected into a pipe 29 is used to circulate water in the pipe 29 to a cold water storage tank 30. The circulated water in the pipe 29 and tank 30, with pump 28, are the sole means required to achieve a vacuum of up to approximately 96% in the outlet pipe 26 of the condensation chamber 12 which ensures that a vacuum is maintained throughout the system 10 in the degassing chamber 15, the boiling chamber 11, and the condensation chamber 12.
The energy required for the evaporation of water in the boiling chamber 11 is supplied by a refrigeration system 31. The refrigeration system 31 has a single refrigerant circuit and includes piping 39 which carries R22 gas. A compressor 32 is used to force the R22 gas through the refrigeration system 31. The system 31 further includes a desuperheater 33 a condensing coil 34 located below water level 18 in the boiling chamber 11, a capillary restrictor 35, or other suitable throttle means, a cooling coil 36 located in the cold water tank 30 and an evaporator coil 37 located within the condensation chamber 12.
The system 10 also includes as a preferred feature a hot water tank 40 which is connected to the cold wate
REFERENCES:
patent: 3558436 (1971-01-01), Foley et al.
patent: 4525243 (1985-06-01), Miller
patent: 4985122 (1991-01-01), Spencer
patent: 5227027 (1993-07-01), Topper
patent: 5439560 (1995-08-01), Karematsu et al.
Abstract, C-134, p. 49, JP, A, 57-130501, Aug. 13, 1982.
Abstract, C-134, p. 49, JP, A, 57-130502, Aug. 13, 1982.
Abstract, C-134, p. 49, JP, A, 57-130503, Aug. 13, 1982.
Abstract, C-320, p. 49, JP, A, 60-153986, Aug. 13, 1985.
Derwent Abstract, 27238B/14, Class D15, (Van Geest) Mar. 21, 1979.
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