Technical field of invention
This invention relates to an integrated water purifier assembly with built-in sensor capable of assessing total dissolved salts (herein after referenced as TDS) in the incoming water. After sensing the TDS content of the input, this assembly is capable of routing water through the desired purification modules depending on the input water conditions.
Background art
Domestic water purifiers currently available in the market are based on ultraviolet radiation based technology, reverse osmosis membrane based technology, and halogen resin based purifiers. Advantages of each of the above referenced water purifying modules serves achieves a specific purification step based on the TDS of the water. Products currently available are designed to purify water blindly and without the knowledge of water conditions. Change of place, change of season and other naturally occurring conditions are found to alter the TDS content in water.
Objects of the invention
The main object of this invention is to ensure near absolute purification of water with desired TDS for human consumption. After identifying the TDS content of the input, the assembly according to this invention is capable of activating the suitable modules and purification elements without human intervention. This assembly is also capable of purifying water to produce an output with a set TDS content from an input with varying TDS content.
When a customer uses a product which is not specifically designed for his water conditions, the water output there from may show the following drawbacks.
1. It may be low in mineral content.
2. It may be high in mineral content.
3. It may be high on heavy metal contaminant.
Water purifier based on ultra violet purification in conjunction with carbon adsorption cartridge known in the art are useful in purifying water with TDS less than 200ppm, ultra violet radiation based purification keeps the mineral content of input water intact while disinfecting the water flow by eliminating bacterial and viral contamination therefrom. Reverse Osmosis (RO) and Ultra Violet (UV) radiation technologies are not capable of being used inter changeably.
Summary of the invention
This invention relates to an integrated water purifier assembly with built-in water condition assessing sensor, comprises a sedimentation filtration module sequentially connected to a precarbon filtration module and a sensor for sensing total dissolved solid content of water input, said sensor means being connected to a reverse osmosis membrane filtration module through a first solenoid valve, and a UV filtration module through a second solenoid valve, said first and second solenoid valves actuatable by said sensor means based on the TDS content of the water input, said reverse osmosis and UV filtration modules being separately connected to a post carbon filtration module which is connected to an output water collection tank and a microprocessor programmed to operate said assembly.
With reference to the accompanying drawings, in which
Fig.l shows water flow diagram, in the assembly according to the present invention.
Brief description with reference to the accompanying drawings
The line diagram attached shows the flow path of water through the assembly.
Water is allowed to enter and flow through sedimentation filtration module and then to precarbon filtration cartridge before it enters the sensor means.
This sensor means electronically senses the TDS content of the incoming water and signals the Printed Circuit Board (PCB) to which it is connected. The sensed value is compared to the preset level by the PCB and the relevant solenoid valve is activated. The sensor means is programmed to periodically sense the TDS of incoming water.
Membrane filtration module comprises a RO membrane having minute pores to block salts and microorganism. A pump means and a reject water valve is also provided in the RO filtration module. The pump creates the required pressure to force water through the pores of the membrane.
The UV filtration chamber is provided with means to supply UV radiation of 253.7 nm wave length by means of a UV lamp. This enables deactivation of disease causing bacteria.
Water flowing out of the UV and RO modules enter post carbon filtration module.
A non-return valve is provided to ensure that there is no back-flow of water in the circuit.
Both the pre and post carbon filtration module contain activated carbon.
A water sensor is provided at the collection tank which senses the water level and activates the input when the level in the collection tank is below the predetermined level.
The PCB of the assembly consists of a micro processor which senses the TDS through the input provided by the sensor and switches off/on the solenoid valves at predetermined TDS levels. The UV circuit is programmed to be on till the water flowing therethrough has sufficient UV exposure and the PCB is programmed to operate the RO module for a predetermined period of time.
If the input water TDS is more than the target TDS level, the sensor would operate both the modules for varying periods and at high levels of input TDS, UV module may not be switched on, ensuring target TDS in the output water.
The assembly according to the present invention may further comprises any alternative reverse osmosis system.
The assembly is also provided with an option switch which enables the user to select a purification method of his choice irrespective of the programmed microprocessor.

WE CLAIM:
1. An integrated water purifier assembly with built-in water condition assessing sensor comprises a sedimentation filtration module sequentially connected to a precarbon filtration module and a sensor for sensing total dissolved solid content of water input, said sensor means being connected to a reverse osmosis membrane filtration module through a first solenoid valve, and a UV filtration module through a second solenoid valve, said first and second solenoid valves actuatable by said sensor means based on the TDS content of the water input, said reverse osmosis and UV filtration modules being separately connected to a post carbon filtration module which is connected to an output water collection tank and a microprocessor programmed to operate said assembly.
2. The assembly as claimed in claim 1, wherein said UV filtration module is provided with a UV lamp providing 253.7 nm wave length of UV radiation.
3. The assembly as claimed in claims 1 and 2, wherein said RO filtration module is provided with a reverse osmosis membrane to block salts and microorganisms, a pump means to create sufficient water pressure and a reject water outlet provided with valve means.
4. The assembly as claimed in claims 1 to 3, wherein the pre and post carbon filtration modules have activated carbon chambers.
5. The assembly as claimed in claims 1 to 4, wherein the collection tank is provided with a water level sensor to sense the water level and activate the input as desired and a non-return valve to prevent back flow of the water therefrom.
6. The assembly as claimed in claims 1 to 5, wherein it further comprises any alternative reverse osmosis system.
7. An integrated water purifier assembly substantially as herein described with particular reference to the drawings.