Background Art In general, an air-cooled distilled water supply apparatus produces distilled water from only water vapor generated by an ordinary boiler vessel. As a result, an amount of distilled water is limited. Further, a separate fan motor is installed in order to condensate the water vapor into the distilled water.

Accordingly, additional electric power consumption is needed.

Therefore, productivity of an amount of distilled water produced is lowered in comparison with the whole electric power consumption including electric power consumption of the heater installed in the boiler vessel and that of the cooling fan motor.

Disclosure of the Invention To solve the above problems, it is an object of the present invention to provide a water-cooled condensator for used in a distilled water supply apparatus which supplies distilled water with only electric power of a heater in a boiler vessel, in which a water collector and a water vapor cooling spring-type condensator are installed in a water-cooled condensator, so that water vapor generated from the cooling water is collected by a water-cooled collector when high temperature water vapor generated from the boiler vessel passes through a spring-type condensation tube and is heat-exchanged with cooling water, to thereby produce separate distilled water.

To accomplish the above object of the present invention, according to the present invention, there is provided a water-cooled condensator for use in a distilled water supply apparatus, the water-cooled condensator comprising: a spring-type condensation tube (7) which is installed in the water-cooled condensator (8 or 8A) to produce distilled water so as to be collected in a distilled water storage tank (12) via water collection tubes (7', 9', 12') and a vent hole (10"); cooling water collectors (10,10A, 10') which are installed on a water collection tube (9) to produce distilled water condensed on the cooling water collectors (10,10A, 10') so as to be collected in the distilled water storage tank (12) via the water collection tube (12') and the vent hole (10"); a water supply tube (11) one

end of which is positioned at the same height as a water level of the cooling water in the water-cooled condensator (8 or 8A), to supply water from the water-cooled condensator (8 or 8A) to a boiler vessel (2); and a direct water supply tube (8') one end of which is positioned at the same hight as the lower surface of the water-cooled condensator (8 or 8A), to supply water to both the water-cooled condensator (8 or 8A) and a water supply tank (14).

Preferably, the boiler vessel (2) and said water supply tank (14) which are installed on a coupling plate (1B), and said water-cooled condensator (8 or 8A) which is installed on each fixing bracket (1D) formed on one side of the said boiler vessel (2) and water supply tank (14) are positioned side by side so that water levels of the respective water-cooled condensator (8 or 8A), boiler vessel (2), and water supply tank (14) are same.

More preferably, one end of said water supply tube (11) is installed at the same height as a water level of the cooling water in the water-cooled condensator (8 or 8A) through penetration of the lower portion of the lower surface or the middle portion of the side surface of the water-cooled condensator (8 or 8A).

Brief Description of the Drawings The above and other objects and advantages of the present invention will become more apparent by describing the preferred

embodiments thereof in detail with reference to the accompanying drawings in which: FIG. 1 is a perspective view showing the whole external appearance of a distilled water supply apparatus according to the present invention; FIG. 2 is a sectional view showing the FIG. 1 distilled water supply apparatus cut along a line A-A; FIG. 3 is an enlarged view showing essential parts of the FIG. 2 apparatus; FIG. 4A shows some essential parts of the FIG. 3 apparatus; and FIG. 4B shows some essential parts of a distilled water supply apparatus according to an alternative of the present invention in opposition to the FIG. 3 apparatus.

Best Mode for Carrying out the Invention Hereinbelow, a water-cooled condensator for use in a distilled water supply apparatus according to the present invention will be described with reference to the accompanying drawings.

Referring to FIGs. 1 through 4B, a water-cooled condensator according to the present invention self-feeds water in a distilled water supply apparatus self-feeds distilled water for a distilled water supply apparatus. When water is supplied into a water supply vessel 14 fixed to an upper fixing plate 1B in an outer body 1A

and an inner body 1'through a water feed tube 14A, a buoy 15 floats up to a predetermined water level, to then stop a water supply valve (not shown). A boiler vessel 2 installed side by side in opposition to the water supply vessel 14 is connected with a water-cooled condensator 8 through connection tubes 2A, 2'and 11A, and water feed/discharge valves 16 and 16A are installed down the boiler vessel 2 and the water-cooled condensator 8. The water-cooled condensator 8 is connected with the water supply vessel 14 through connection tubes 14', 8'and 8A, and water feed/discharge valves 17 and 17A are installed down the water-cooled condensator 8 and the water supply vessel 14. A discharged water collection vessel 18 is installed below the water feed/discharge valves 16 and 16A and the water feed/discharge valves 17 and 17A. Water can be supplied to and discharged from the water-cooled condensator 8 and the boiler vessel 2 through manipulation of the water feed/discharge valves 16 and 16A and 17 and 17A. The water-cooled condensator 8 and the boiler vessel 2 are installed side by side in opposition to the water supply vessel 14. Water supplied from the water supply vessel 14 is supplied into the boiler vessel 8 through the water-cooled condensator 8 up to a proper water level. The water supplied into the boiler vessel 2 makes a power switch 19 by the water's weight, to then make a heater 5 operate to boil the water contained in the boiler vessel 2 and generate water vapor. The generated water vapor passes through a coil spring-type condensation tube 7 in

the water-cooled condensator 8, to thereby produce distilled water and make the produced distilled water stored in a water storage tank 12. Further, when high temperature water vapor generated from the boiler vessel 2 passes through the spring-type condensation tube 7 and is heat-exchanged with cooling water, the temperature of the cooling water becomes high due to conduction heat, to thereby generate water vapor. The generated water vapor is condensed by water collectors 10,10A, and 10'installed in the water-cooled condensator 8 and then the condensed distilled water passes through a vent valve 10''and then collected to the water storage tank 12 through connection tubes 12'and 12'' between the water storage tank 12 and the water-cooled condensator 8. As a result, additional distilled water is produced by conduction heat in the spring-type condensation tube 7, to thereby increase an amount of distilled water produced.

In more detail, condensation water collectors 10,10A, and 10'are installed in a bushing where several vent holes 10"are perforated, and connection tubes 12', 9 and 9'are connected with the upper portion of the connection tube 12'tightly connected with the water storage tank 12 and the lower surface of the central portion of the water-cooled condensator 8, through welding or screw connection. One end of the connection tube 9'is vented toward the upper surface of a cover 4 in the boiler vessel 2, and a power switch 19 is actuated by the water's weight. A coil spring-type condensation tube 7 is connected with the cover 4 for

the boiler vessel 2 and the water-cooled condensator 8. The lower portion 7'of the water-cooled condensator 8 is installed in the lower side of the connection tube 12'toward the water storage tank 12. A water supply tube 11 is installed in one side of the lower portion of the water-cooled condensator 8 at height as high as being close to the cooling water level. A water supply tube 2'is welded or screw combined on one side of the lower surface of the boiler vessel 2, and a rubber corrugated tube is connected with the water feed/discharge valves 16 and 16A installed on a lower inner body 1C. Meanwhile, water supply tubes 11 and 11A are connected with the water-cooled condensator 8. The water supply vessel 14 is connected with a water supply tube 14'connected with a water supply tube 8'installed in the lower portion of the water-cooled condensator 8 through a T-shaped connector 8A, so as to be connected with the water feed/discharge valves 17 and 17A mounted on the body 1C. Water which is supplied from the water supply vessel 14 to the water-cooled condensator 8 and is also supplied to the boiler vessel 2 through the water supply tube 11 installed in the water-cooled condensator 8 is heated up to 100C by the heater 5 installed in the boiler vessel 2. Water vapor generated when the water is heated at 100 C passes through a condensation tube 7 and thus cooling water is vaporized by conduction heat transferred from the hot water vapor in the condensation tube 7. Distilled water condensed by the condensation water collectors 10,10'and 10A is stored through

the vent hole 10". The distilled water condensed by the condensation water collectors 10,10'and 10A is added to the distilled water condensed through the condensation tube 7 in the boiler vessel 2,'to thereby produce a great deal of distilled water even with only electric power which activates the heater 5.

With the above-described structure of the present invention, the water supply tube 11 which supplies water from the water-cooled condensator 8 to the boiler vessel 2 is heightened, so that the upper portion of the water supply tube 11 is close to a proper water level of the cooling water. As a result, a mixed material (such as chloric component, fluorine component, or an inorganic material and a mineral), contained in the cooling water flowing from the water supply vessel 14 to the water-cooled condensator 8 is vaporized. Otherwise, only good qualitative precipitated water is supplied to the boiler vessel 2 through the water supply tube 11. Accordingly, good qualitative distilled water is produced from the good qualitative heated water which has been boiled. Further, boiling water is prevented from reversely flowing from the boiler vessel 2 to the water-cooled condensator 8. A coupling rod 3 is installed at the central portion of the lower surface of the boiler vessel 2 together with a fixing bracket 1D installed in a body 1B of the boiler vessel 2. A shaft 3'of the coupling rod 3 is externally welded on the boiler vessel 2, and then a compression spring 20 is installed on the shaft 3' between the lower surface of the boiler vessel 2 and the fixing

bracket 1D. The inner coupling rod 3 is penetratively coupled with an engagement nut 6 on a boiler cover 4. A guide shaft 3"is installed at the side of the shaft 3'so that the boiler vessel is moved up and down while preventing the boiler vessel from being rotated. Further, a rubber corrugated tube 2"is installed to make the water feed/discharge tube 2'flexibly moved when the boiler vessel 2 moves up and down by weight of the water in the boiler vessel.

A vent tube 12'is welded on the cover of the water storage tank 12 so that the vent hole 10"of the water collectors 10,10A, and 10'is communicated with the water storage tank 12 through connection tubes 9 and 9'. Accordingly, the distilled water is smoothly discharged without hindrance of the air pressure.

Sterilized air is communicated through the vent hole 10"positioned at the center of the water-cooled condensator 8 at which the temperature is high so that general bacilli in the air is not penetrated.

A power switch 19 is also installed on the fixing bracket 1D of the boiler vessel 2. When water is supplied into the boiler vessel 2, the power switch 19 is powered on by weight of the water, and then a heater 5 is turned on to produce distilled water. Likewise, another power switch 19'is installed on the lower surface of the water storage tank 12. Thus, when the water storage tank 12 is full of distilled water, a rotating shaft 23 is slanted by weight of the distilled water in the water storage tank 12, and thus the power

switch 19'is powered off, to thereby stop production of distilled water so that only a predetermined amount of the distilled water is stored in the water storage tank 12. When the distilled water is discharged from the water storage tank 12 through an opening operation of a discharge valve 13, the heater 5 is turned on again to thus produce distilled water as much as the discharged amount of the distilled water. The heater 5 is turned off when the water storage tank 12 is full of distilled water.

A reference numeral 24 denotes a compression spring which adjusts load of the water storage tank 12, a reference numeral 12A denotes a fixing bracket attached on the water storage tank 12.

The fixing bracket 12A is installed axially on the rotating shaft 23 installed between the one body 1 and the other body 1', in correspondence to another fixing bracket 22'. A reference numeral 1"denotes the cover of the distilled water supply apparatus according to the present invention. A reference numeral 13' denotes a distilled water discharge valve. A reference numeral 25 of FIG. 1 denotes a power switch on/off indication lamp, a reference numeral 25B thereof denotes a boiler operation indication lamp, and a reference numeral 25C thereof denotes a water storage tank operation indication lamp.

The water-cooled condensator 8 for the distilled water supply apparatus having the above-described structure will be described below in more detail.

As shown in FIG. 4A, the spring-type condensation tube 7 is

internally installed in the water-cooled condensator 8, so that the upper end of the spring-type condensation tube 7 is connected with the boiler vessel 2 and the lower end thereof is welded on the lower surface of the water-cooled condensator 8. That is, the spring-type condensation tube 7 is connected with the boiler vessel 2 and the water storage tank 12. The water-cooled condensator 8 is connected with the water storage tank 12 through the vent hole tube 12'. The vent hole tube 9 is installed at the center of the water-cooled condensator 8 and is welded on the lower surface of the water-cooled condensator 8, so that the lower portion of the water-cooled condensator 8 is connected with the water storage tank 12, and the upper portion thereof is connected with a valve on which a vent hole 10"is formed together with the water collectors 10,10A, and 10'so as to be communicated with the vent hoe tube 12'of the water storage tank. Accordingly, distilled water which is obtained by condensing water vapor generated from the conduction heat of the spring-type condensation tube 7 is added in the water storage tank 12 through the vent hole 10". In addition, air is absorbed into the water storage tank 12 as much as an amount of distilled water discharged when the distilled water stored in the water storage tank 12 is discharged. In this case, sterilized air is absorbed due to the high temperature of the cooling water. Meanwhile, as shown in FIG.

4A, a water supply tube 11 is welded or screw-connected on the lower surface of the water-cooled condensator 8, in which the end

portion of the water supply tube 11 is greatly heightened so as to be close to the water level in the water-cooled condensator 8, in a manner that only a good quality of water can be supplied into the boiler vessel 2 which is obtained by vaporizing or precipitating inorganic materials which is dissolved together with chlorine or fluorine components and other organic materials of water supplied into the water supply vessel 14.

FIG. 4B shows some essential parts of a distilled water supply apparatus according to an alternative of the present invention in opposition to the FIG. 3 apparatus. As shown in FIG.

4B, the lower portion of a water collection tube 9 on which water collectors 10, 10A and 10'are installed is installed at the center of a water-cooled condensator 8A, and the end portion of a cooling spring-type condensation tube 7 is welded on one side of the lower portion of the water-cooled condensator 8A. A water supply tube 11 connected with the boiler vessel 2 is positioned in the middle of the water-cooled condensator 8A, and is welded on the outer portion of the water-cooled condensator 8A so as to be positioned at a position close to a proper water level of the cooling water in the water-cooled condensator 8A, as in the case of the water supply tube 11 of FIG. 4A.

Meanwhile, after distilled water is produced, discharge valves 16,16A, 17 and 17A are manipulated respectively, to thus discharge a bad quality of water into which organic materials have been precipitated in the water supply vessel 14, the water-cooled

condensator 8 or 8A, and the boiler vessel 2 can be discharged on occasion. An exhaust water tank 18 is detachably installed below the water feed/discharge valves 16,16A, 17, and 17A, to thus convenience feed and discharge of water.

As described above, the present invention can primarily produce distilled water by applying power to a heater in a boiler vessel, and secondarily produces distilled water through water collectors 10,10A, and 10'by conduction heat of a spring-type condensation tube 7. Thus, the present invention can increasingly produce distilled water in comparison with a conventional distilled water apparatus with a substantially same power consumption. As a result, the distilled water supply apparatus according to the present invention is very useful capable of saving power consumption in producing distilled water.

As described above, the present invention has been described with respect to particularly preferred embodiments. However, the present invention is not limited to the above embodiments, and it is possible for one who has an ordinary skill in the art to make various modifications and variations, without departing off the spirit of the present invention.

Industrial Applicability As described above, the present invention is applied to a distilled water supply apparatus. In more detail, the present invention is applied to a water-cooled condensator which can produce a more amount of distilled water in combination with a boiler vessel and a water supply vessel.