GB2411136A - A filtered water dispenser - Google Patents
A filtered water dispenser Download PDFInfo
- Publication number
- GB2411136A GB2411136A GB0403423A GB0403423A GB2411136A GB 2411136 A GB2411136 A GB 2411136A GB 0403423 A GB0403423 A GB 0403423A GB 0403423 A GB0403423 A GB 0403423A GB 2411136 A GB2411136 A GB 2411136A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- water
- pump
- tank
- user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
- C02F2209/445—Filter life
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A filtered water dispenser comprises first and second tanks connected via a filter, a pump to transfer any contents of the first tank through the filter to the second tank and a system based on an operating condition of a pump to measure the total amount of water passed through the filter. Preferably a magnetic reed switch or a micro-switch arrangement is used to measure the number of pump cycles where each closure of the micro-switch is fed into an electronic totaliser. The filter may be replaced when an electronic microprocessor, initialised for a water hardness receives an input from the totaliser and calculates a filter replacement time. The need for filter replacement is indicated to a user by a signal such as a light.
Description
241 1 136 Filter Life Calibration Water filtration devices employing a jug
and a filter where the water from one compartment of the jug is made to pass through the filter into another compartment have been around for some time. The filter is usually composed of a mixture of ion exchange resins and activated carbon. There are also systems in existence where the water filtration device is associated with an electric kettle and thus the second compartment incorporates a heating element capable of boiling that water Devices that inform the user when such filters needs changing are known in the prior art. One relies on a float and a counter to tell the user how many times the top compartment has been filled (US 5882507), another (US App. 08/341420) relies on a mechanism connected to the lid, counting the number of times the later has been opened, to estimate the remaining life of the filter.
The above systems provide only very approximate values for the remaining life of the filter or the optimum time for its replacement because.
a) The amount of water that has actually gone though the filter is not precisely known as people may fill the water filtration devices to different levels.
b) The water hardness is not known, and the total amount of water the filter can cope with is completely dependent on the concentration of calcium carbonate and other alkaline-earth ions to remove.
A water filter system has been described (GB 2380660) employing a piston pump, which passes the water from the first compartment to the second with a well-defined volume per stroke, other systems are know in different industries.
When a means of totalising the number of strokes, rotations or cycles of a pump in a water filtration system is employed, the total volume of water that has gone through the filter is thus the nominal volume of the pump multiplied by the number of cycles.
For example in the case of a piston pump with a set of non-return valves, the displaced volume of the cylinder multiplied by the number of full cycles will give the volume of water displaced.
The practical measurement of water hardness is a well-known process for example in the ornamental fish industry, but in many other areas.
A known simple method involves either the addition of specific liquid chemicals to a known volume of water until there is a colour change in a test tube. The number of drops required for such change gives the degree of hardness in various scales.
Another well-known method involves the use of test strips with different active regions, which are immersed in the water to be tested. The number of regions that change colour give an indication of the hardness of the water.
As we have seen, the total volume of water a filter can cope with, before needing replacement, will depend on the volume of water that has gone though it at a known flow rate, as well as the hardness of the water being filtered Thus, for every degree of water harness there is a maximum amount of water the filter can cope with, before needing replacing.
According to the invention there is provided a filtered-water dispenser comprising first and second tanks connected via a filter and a displacement pump transferring the contents of the first tank through the filter to the second tank, and where there is a totalising system that counting the number of pump cycles, measures the total amount of water that has gone through the filter and taking into account the water hardness indicates to the user when it is time to replace the filter.
An embodiment of the invention possesses a means of measuring the number of cycles of the pump by the use of a micro-switch arrangement where each closure of the switch is fed into an electronic totaliser. Another embodiment involves the location of a magnet in the piston rod and the close location of a magnetic reed switch on the bushing of such rod, which is activated by the proximity to the magnet when in the corresponding point of its movement producing one count per cycle.
On an embodiment of the invention the replacement time for the filter calculation is performed by the use of an electronic microprocessor with a simple routine that is initialised for the water hardness and receiving an input from the pump totaliser. It can as a consequence inform the user by relaying a message, a light or similar signal when it is time to replace the filter.
In another embodiment of the invention the user can determine the replacement time by looking up a pre-calibrated table indicating the maximum number of strokes or pump cycles for each degree of water hardness. The mechanism will simply indicate the current total. The user will then know that after reaching the corresponding maximum number of cycles for the present water hardness the filter will need replacing.
Claims (3)
- Claims 1. A filtered-water dispenser comprising first and second tanksconnected via a filter and a displacement pump transferring the contents of the first tank through the filter to the second tank, and where there is a totalising system that counting the number of pump cycles or rotations measures the total amount of water that has gone through the filter.Amendments to the claims have been filed as follows 1. A filtered-water dispenser comprising first and second tanks connected via a filter and a displacement pump transferring the contents of the first tank through the filter to the second tank, and where there is a totalising system that counting the number of pump cycles, measures the total amount of water that has gone through the filter and taking into account the water hardness indicates to the user when it is time to replace the filter.
- 2. A dispenser according to claim 1 where time for the illter calculation is performed by the use of an electronic microprocessor with a simple routine that is initialised for the water hardness and receiving an input from the pump totaliser will inform the user when it is time to change the filter.
- 3. A dispenser according to claim 1 where the user can determine the replacement time of the filter by looking up a pre-calibrated table indicating the maximum number of strokes or pump cycles for each degree of water hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0403423A GB2411136A (en) | 2004-02-17 | 2004-02-17 | A filtered water dispenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0403423A GB2411136A (en) | 2004-02-17 | 2004-02-17 | A filtered water dispenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0403423D0 GB0403423D0 (en) | 2004-03-24 |
| GB2411136A true GB2411136A (en) | 2005-08-24 |
Family
ID=32039820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0403423A Withdrawn GB2411136A (en) | 2004-02-17 | 2004-02-17 | A filtered water dispenser |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2411136A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202000003841A1 (en) * | 2020-02-25 | 2021-08-25 | Tenacta Group Spa | Method for improving the performance of an iron and equipment using this method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003011088A2 (en) * | 2001-07-25 | 2003-02-13 | Monteiro Andre | Vessel for heating and filtering water |
-
2004
- 2004-02-17 GB GB0403423A patent/GB2411136A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003011088A2 (en) * | 2001-07-25 | 2003-02-13 | Monteiro Andre | Vessel for heating and filtering water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202000003841A1 (en) * | 2020-02-25 | 2021-08-25 | Tenacta Group Spa | Method for improving the performance of an iron and equipment using this method |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0403423D0 (en) | 2004-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |