Chlorine gas generator apparatus

• US 4,290,873 A
• Filed: 05/15/1980
• Issued: 09/22/1981
• Est. Priority Date: 06/25/1979
• Status: Expired due to Term

• Current Assignee: Linda Dunn, Marc E. Dunn
• Original Assignee: Ron L. Weaver
• Inventors: Weaver, Ron L.
• Primary Examiner(s): Valentine, Donald R.
• Application Number:
  US06/150,170
• Time in Patent Office: 495 Days
• Field of Search: 204/260, 204/266, 204/284, 204/228, 204/128, 204/263, 204/265, 204/271, 204/277-278, 204/290 F, 204/283, 204/295, 264/56, 106/71
• US Class Current: 204/230.2
• CPC Class Codes: C02F 1/46109 Electrodes
• CPC Class Codes: C02F 1/4674 with halogen or compound of halogens, e.g. chlorine, bromine
• CPC Class Codes: C02F 1/763 Devices for the addition of such compounds in gaseous form
• CPC Class Codes: C02F 2001/46138 Electrodes comprising a substrate and a coating
• CPC Class Codes: C02F 2001/46152 characterised by the shape or form electrodes in particulate form or with conductive or non-conductive particles between them C02F1/46114
• CPC Class Codes: C02F 2001/46157 Perforated or foraminous electrodes
• CPC Class Codes: C02F 2103/42 from bathing facilities, e.g. swimming pools
• CPC Class Codes: C02F 2201/4617 DC only
• CPC Class Codes: C02F 2201/4618 Supplying or removing reactants or electrolyte
• CPC Class Codes: C02F 2303/04 Disinfection
• CPC Class Codes: C25B 9/17 Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
• CPC Class Codes: Y02W 10/37 using solar energy

Abstract

Apparatus for generating chlorine gas from sodium chloride and for transmitting the generated gas to water for purification of the water.

Claims

1. Apparatus for electrolytically generating a gas from a salt solution, comprising, in combination:

first cylinder means adapted to contain a quantity of water, including,

a housing portion,

a cylinder disposed beneath the housing portion,

a bottom end wall closing the cylinder,

a plate disposed in the cylinder and spaced apart from the housing portion, and

a hole in the plate;

cathode electrode means disposed in the first cylinder means;

second cylinder means substantially coaxially aligned with the hole in the plate and disposed in the first cylinder means and in the quantity of water therein and adapted to contain a quantity of salt solution in which the salt is dissociated into ions and comprising a cell porous to the migration of ions from the salt solution but substantially impervious to chemical attack;

cathode electrode means disposed in the first cylinder means and in the quantity of water therein;

anode electrode means disposed in the second cylinder means and in the quantity of salt solution therein;

direct current means electrically connected to the anode electrode means and to the cathode electrode means for providing a current flow between the anode means and the cathode means for generating a gas from the dissociated salt ions; and

conduit means extending from the second cylinder means through which the generated gas flows out of the second cylinder means.

2. The apparatus of claim 1 in which the cathode electrode means comprises a strip of metal helically disposed in the first cylinder means and spaced apart from the second cylinder means.

3. The apparatus of claim 1 in which the second cylinder means includes

a cap for covering the hole in the plate, and

a salt cell secured to the cap and extending into the first cylinder means for containing the quantity of salt solution.

4. The apparatus of claim 3 in which the cathode electrode means is secured to the plate and disposed about the salt cell in the cylinder of the first cylinder means.

5. The apparatus of claim 4 in which the cathode electrode means comprises a cylindrical electrode coaxially disposed about the salt cell.

6. The apparatus of claim 5 in which the cathode electrode means further comprises a cylinder of expanded metal mesh.

7. The apparatus of claim 1 in which the anode electrode means comprises a metallic mesh which is generally unreactive to the generated gas.

8. The apparatus of claim 7 in which the anode electrode further comprises a strip of titanium mesh with a cladding of platinum thereon.

9. The apparatus of claim 1 in which the direct current means includes means for varying the current flow for controlling the generation of the gas.

10. The apparatus of claim 9 in which the second cylinder means includes vent means to compensate for the flow of generated gas out of the second cylinder means.

11. The apparatus of claim 10 in which the first cylinder means further includes a cup on the bottom end wall and the cell of the second cylinder means is disposed in the cup.

12. The apparatus of claim 9 in which the direct current means is disposed in the housing portion of the first cylinder means.

13. The apparatus of claim 1 in which the second cylinder means includes

a salt cell, and

a cap having a depending element extending through the hole in the plate and for holding the salt cell in the cylinder of the first cylinder means.

14. The apparatus of claim 13 in which the salt cell of the second cylinder means comprises a ceramic cell disposed in the cylinder of the first cylinder means, and the depending element of the cap of the second cylinder means comprises a depending flange disposed about the ceramic cell.

15. The apparatus of claim 13 in which the salt cell of the second cylinder means comprises a flexible bag, and the depending element of the cap of the second cylinder means comprises a cylinder extending downwardly from the cap, and the flexible bag is secured to the depending cylinder.

16. Apparatus for generating chlorine gas for purifying water, comprising, in combination:

first cylinder means adapted to contain a quantity of water;

second cylinder means disposed in the first cylinder means having porous cylinder walls through which ions migrate but which cylinder walls are substantially impervious to the generated chlorine gas and adapted to contain a quantity of water and sodium chloride for providing a solution of dissociated sodium ions and chlorine ions;

cathode electrode means disposed in the first cylinder means and spaced apart from the second cylinder means;

anode electrode means disposed in the quantities of water and sodium chloride salt in the second cylinder means;

means for providing a flow of direct current between the anode electrode and the cathode electrode for generating chlorine gas in the second cylinder means;

first conduit means extending from the second cylinder means through which the generated chlorine flows out of the second cylinder means to the water being purified;

vent means through which air flows into the second cylinder means as chlorine gas flows out of the second cylinder means through the first conduit means;

housing means secured to the first cylinder means for receiving the means for providing a flow of direct current;

second conduit means through which water flows connected to the first conduit means for receiving the flow of generated chlorine gas; and

nozzle means in the second conduit means connected to the first conduit means for drawing chlorine gas out of the second cylinder means through the first conduit means and into the water flow for purifying the water.

17. The apparatus of claim 16 in which the first cylinder means includes;

a bottom wall;

a cylinder wall secured to the bottom wall and extending upwardly therefrom, and including an inner periphery and an upper rim;

a cup on the bottom wall for receiving the second cylinder means and for orienting the second cylinder means substantially coaxially with respect to the cylinder wall;

a plate secured to the inner periphery of the cylinder wall spaced downwardly from the rim of the cylinder wall;

a first aperture extending through the plate coaxially with the cylinder wall for providing access to the second cylinder means;

a second aperture extending through the plate for adding water to the first cylinder means;

first outlet means disposed adjacent the bottom wall and extending through the cylinder wall for draining the first cylinder means;

second outlet means disposed adjacent the plate and extending through the cylinder wall above the first outlet means through which excess water flows from the first cylinder means;

tube means secured to the first outlet means and the second outlet means and comprising a fill tube showing the height of the water in the first cylinder means; and

hinge means for pivotally securing the housing means to the first cylinder means.

18. The apparatus of claim 16 in which the cathode electrode means comprises a metallic strip helically disposed on the inner periphery of the first cylinder means.

19. The apparatus of claim 16 in which the second cylinder means comprises a ceramic cylinder having:

a bottom wall;

a cylinder wall extending upwardly from and secured to the bottom wall;

a cap extending over the first aperture in the plate and including a depending flange extending downwardly through the first aperture and about the cylinder wall of the second cylinder means for holding the second cylinder means relative to the first cylinder means;

means for securing the anode electrode to the cap; and

an aperture extending through the cap for adding water and salt to the second cylinder means.

20. The apparatus of claim 16 in which the vent means comprises a hole extending through the cap.

21. The apparatus of claim 16 in which the nozzle means includes a venturi section disposed in the second conduit means for increasing the velocity of the water flow and decreasing the pressure of the water flow, and the first conduit means extends into the venturi section for providing a suction for drawing the chlorine gas out of the second cylinder means and into the water flow.

22. The apparatus of claim 16 in which the second conduit means includes:

a mixing cylinder;

a water supply pipe connected to the mixing cylinder and having a first bore through which the water flows for developing the water flow to the mixing cylinder;

third conduit means connected to the mixing cylinder through which water flows out of the mixing cylinder; and

means for controlling the flow of water out of the mixing cylinder through the third conduit means.

23. The apparatus of claim 22 in which the nozzle means comprises:

a restrictor connected to the water supply pipe;

a second bore in the restrictor communicating with the first bore in the water supply pipe and receiving the water flow therefrom and delivering the water flow to the mixing cylinder, with the first bore being larger in diameter than the second bore to provide an increase in velocity in the water flow in the second bore relative to the velocity of the water flow in the first bore; and

a third bore in the restrictor communicating with the second bore in the restrictor and connected to the first conduit means for providing a flow of generated chlorine gas to the water flow in the restrictor.

24. The apparatus of claim 22 in which the means for controlling the flow of water out of the mixing cylinder includes:

a standpipe in the mixing cylinder and connected to the third conduit means;

a cap disposed over the standpipe for controlling the flow of water into the standpipe;

a rod pivotally connected to the mixing cylinder and to the cap; and

a float connected to the rod and movable to raise and lower the cap in response to the water level in the mixing cylinder.