CN108101246B - Water purifier and water quality detection method thereof - Google Patents
Water purifier and water quality detection method thereof Download PDFInfo
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- CN108101246B CN108101246B CN201711372296.XA CN201711372296A CN108101246B CN 108101246 B CN108101246 B CN 108101246B CN 201711372296 A CN201711372296 A CN 201711372296A CN 108101246 B CN108101246 B CN 108101246B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 825
- 238000001514 detection method Methods 0.000 title claims abstract description 205
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000012423 maintenance Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 31
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 19
- 239000002351 wastewater Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001223 reverse osmosis Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000002035 prolonged effect Effects 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 230000003749 cleanliness Effects 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- 244000052616 bacterial pathogen Species 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims 3
- 238000004891 communication Methods 0.000 claims 2
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000012372 quality testing Methods 0.000 abstract description 26
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
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- 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
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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Abstract
The invention discloses a water purifier, and relates to the field of drinking water treatment equipment. The water purifier is provided with a water inlet end and a water outlet end, a water quality detection device is arranged on the water inlet side of the water outlet end, a pure water channel and a raw water channel which are connected in parallel are arranged between the water inlet end and the water quality detection device, a water channel switching device is arranged on the water outlet side of the water inlet end, and the water channel switching device is used for enabling the water inlet end to be communicated with the pure water channel or the water inlet end to be communicated with the raw water channel. This purifier has realized the switching in pure water route and raw water route through water route auto-change over device to can adopt one set of water quality testing device to detect pure water quality of water and raw water quality of water respectively, reduce the water quality testing cost of purifier, moreover, when non-water quality testing state, can make water quality testing device contact with the pure water all the time, improve water quality testing device's measurement accuracy and life, reduce the maintenance cost. The invention also discloses a water quality detection method of the water purifier.
Description
Technical Field
The invention relates to the field of drinking water treatment equipment, in particular to a water purifier and a water quality detection method thereof.
Background
Along with the increase of the types of water purifiers, people have higher and higher requirements on the water purifiers. In order to present water quality data before and after purification to a user, or determine a working state of a water purifier according to the water quality data to perform corresponding intelligent control, in the prior art, a water quality detection device is respectively installed at a raw water end and a pure water end to respectively obtain water quality data of raw water and pure water, such as Total Dissolved Solids (TDS), Total Organic Carbon (TOC), Chemical Oxygen Demand (COD), chromaticity, turbidity, pressure, and the like.
The existing mode of measuring the water quality data of raw water and pure water by the water purifier has the following problems: firstly, in order to obtain water quality data of raw water and pure water, two sets of water quality detection devices need to be installed in the water purifier, so that the cost of the water purifier is increased; secondly, the water quality detection device has errors, and the errors are increased after long-term use; thirdly, a dirty layer is formed on the surface of the water quality detection device when the water quality detection device is contacted with water for a long time, the thickness and the components of the dirty layer seriously influence the measurement precision of the water quality detection device, for example, because the quality of raw water is poor, the influence of the dirty layer on the raw water end water quality detection device is far greater than the influence of the dirty layer on the pure water end water quality detection device, and the dirty layer greatly shortens the service life of the raw water end water quality detection device, so that the raw water end water quality detection device needs to be cleaned and corrected irregularly in order to ensure the normal use of the raw water end water quality detection device, which brings inconvenience to the use of the water purifier and increases the extra cost of the water purifier; fourthly, the water has dissolved air, and the dissolved air can become bubbles to be attached to the surface of the water quality detection device under the temperature and pressure changes so as to influence the measurement precision of the water quality detection device, and particularly when a booster pump is arranged, the pressure change of the raw water end is increased, a large amount of dissolved air is released, and the measurement precision of the water quality detection device at the raw water end is seriously influenced.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a water purifier and a water quality detection method thereof, so as to solve the technical problems of high water quality detection cost and low measurement precision of the water purifier.
In order to solve the technical problem, an embodiment of the present invention provides a water purifier, which includes a water inlet end and a water outlet end, wherein a water quality detection device is disposed on a water inlet side of the water outlet end, a pure water waterway and a raw water waterway are disposed between the water inlet end and the water quality detection device and are connected in parallel, and a waterway switching device is disposed on a water outlet side of the water inlet end and is used for communicating the water inlet end with the pure water waterway or communicating the water inlet end with the raw water waterway.
According to the water purifier provided by the embodiment of the invention, when the water inlet end is communicated with the raw water waterway through the waterway switching device, the water quality detection device can detect the quality of raw water, and when the water inlet end is communicated with the pure water waterway through the waterway switching device, the water quality detection device can detect the quality of pure water, so that the purpose of detecting the quality of raw water and pure water by adopting one set of water quality detection device is realized, and the water quality detection cost of the water purifier is reduced. Moreover, when the quality of raw water does not need to be detected, the water quality detection device can be always in contact with pure water with better water quality by communicating the water inlet end with the pure water waterway, so that the influence of a dirty layer on the water quality detection device is reduced, the service life of the water quality detection device is prolonged, the measurement precision of the water quality detection device is improved, frequent correction of the water quality detection device is avoided, and the maintenance cost of the water purifier is reduced. Meanwhile, the water quality detection device is less in dissolved air in the pure water, so that the contact between the water quality detection device and the pure water can reduce the number of attached bubbles, the influence of the attached bubbles on the measurement precision of the water quality detection device is reduced, and the measurement precision of the water quality detection device is further improved.
Optionally, the waterway switching device includes a first valve and a second valve, the first valve connects the pure water waterway to the water inlet end, the second valve connects the raw water waterway to the water inlet end, and the on-off of the first valve and the second valve is controlled to enable the water inlet end to be communicated with the pure water waterway or the water inlet end to be communicated with the raw water waterway.
Optionally, the pure water waterway comprises a third valve for blocking raw water from entering the pure water waterway, the third valve being disposed at an outlet side of the pure water waterway.
When carrying out former water quality testing, through closing the third valve, can prevent that raw water from flowing into and polluting the pure water route to also can prevent that the pure water in the pure water route from flowing into and influencing the detection of raw water quality in the raw water.
Optionally, the water purifier further comprises a fourth valve for draining water, an input end of the fourth valve is connected between the water quality detection device and the water outlet end, and an output end of the fourth valve is communicated with the atmosphere.
After the fourth valve is arranged, when the raw water quality is detected, the fourth valve can be opened, so that the raw water for detecting the raw water quality is discharged from the fourth valve, the raw water is prevented from remaining in the pipeline, and the water outlet quality of the water purifier is improved. Meanwhile, after the fourth valve is arranged, the pipeline can be cleaned by pure water, and the cleaned wastewater is discharged from the fourth valve, so that residual raw water in the pipeline is further removed, and the water outlet quality of the water purifier is further improved.
Optionally, the water purifier further comprises a fifth valve for draining water at the water quality detection device, an input end of the fifth valve is communicated with a water inlet side of the water quality detection device, and an output end of the fifth valve is communicated with the atmosphere.
After setting up the fifth valve, can be through closing second valve and third valve, open fourth valve and fifth valve, make the fourth valve, water quality testing device forms the evacuation water route with the fifth valve, the pressure at evacuation water route both ends equals and is atmospheric pressure, make the water in the pipeline discharge under the effect of dead weight, thereby make water quality testing device be in the air, just so be unfavorable for water quality testing device surface to form dirty layer, and can also avoid the aquatic bubble to adhere to on water quality testing device surface, be favorable to improving water quality testing device's measurement accuracy and life-span.
Optionally, the pure water route still includes the reverse osmosis filter core of setting between first valve and third valve, the waste water end of reverse osmosis filter core is connected with the sixth valve that is used for discharging waste water, the output of fourth valve is connected between the waste water end of reverse osmosis filter core and sixth valve. When the pure water route adopts the reverse osmosis filter core, the due function of the pure water route can be realized through the pipeline connection, and the water route structure of the water purifier is simplified.
In order to solve the above technical problem, an embodiment of the present invention further provides a water quality detection method for a water purifier, where the water purifier has a water inlet end and a water outlet end, a water quality detection device is disposed on a water inlet side of the water outlet end, a pure water waterway and a raw water waterway are disposed between the water inlet end and the water quality detection device and connected in parallel, and a waterway switching device is disposed on the water outlet side of the water inlet end, and the method includes:
performing pure water quality detection, including controlling the waterway switching device to enable the water inlet end to be communicated with a pure water waterway, and acquiring pure water quality data output by the water quality detection device;
and performing raw water quality detection, including controlling the waterway switching device to enable the water inlet end to be communicated with a raw water waterway, and collecting raw water quality data output by the water quality detection device.
According to the water quality detection method of the water purifier, the set of water quality detection device is reused in a time-sharing mode, so that the utilization rate of the water quality detection device is improved, and the cost of the water quality detection method is reduced.
Optionally, the pure water waterway comprises a third valve, the third valve is arranged at the water outlet side of the pure water waterway, and the pure water quality detection further comprises opening the third valve; the raw water quality detection also comprises a third valve which is closed.
Optionally, the water purifier further comprises a fourth valve for draining water, an input end of the fourth valve is connected between the water quality detection device and the water outlet end, an output end of the fourth valve is communicated with the atmosphere, and the step of performing pure water quality detection further comprises closing the fourth valve; the raw water quality detection also comprises a fourth valve.
Optionally, the method further comprises a cleaning pipeline, wherein the cleaning pipeline comprises a control waterway switching device to enable the water inlet end to be communicated with the pure water waterway, and the third valve and the fourth valve are opened. By adopting the pure water cleaning pipeline, the raw water residue in the pipeline can be thoroughly removed, and the water outlet quality of the water purifier is improved. Meanwhile, the pure water cleaning pipeline is adopted, and raw water remained on the surface of the water quality detection device can be washed and removed, so that the cleanliness of the water quality detection device is ensured, and the measurement precision and the service life of the water quality detection device are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a waterway structure of a water purifier according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a waterway structure of a water purifier according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a waterway structure of a water purifier according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the flow direction of a water path during pure water quality testing according to a fourth embodiment of the water quality testing method of the present invention;
FIG. 5 is a schematic view illustrating a flow direction of a water path during water quality testing of raw water according to a fourth embodiment of the water quality testing method of the present invention;
FIG. 6 is a schematic view illustrating a flow of a waterway in cleaning a pipeline according to a fourth embodiment of the water quality detecting method of the present invention;
fig. 7 is a schematic view illustrating a flow direction of a waterway when a pipeline is drained in the water quality detecting method according to the fifth embodiment of the invention.
Description of reference numerals:
| 1-first stage filtering device; | 2-a second stage filtration device; | 3-a first valve; |
| 5, a booster pump; | 6-a third stage filtering device; | 7-sixth valve; |
| 8, a check valve; | 9-a water reservoir; | 10-a fourth stage filtration unit; |
| 11-water quality detection device; | 12 — a second valve; | 13 — a third valve; |
| 14-a fourth valve; | 15-a fifth valve; | 20-waterway switching device; |
| 30-Water pressure detection deviceAnd (4) placing. |
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the invention provides a water purifier, which is provided with a water inlet end and a water outlet end, wherein a water quality detection device is arranged on the water inlet side of the water outlet end, a pure water waterway and a raw water waterway which are connected in parallel are arranged between the water inlet end and the water quality detection device, and a waterway switching device is arranged on the water outlet side of the water inlet end and is used for communicating the water inlet end with the pure water waterway or communicating the water inlet end with the raw water waterway. Wherein, components such as valve components, water storage devices, filter elements and the like can be arranged between the water outlet end and the water quality detection device.
According to the water purifier provided by the embodiment of the invention, when the water inlet end is communicated with the raw water waterway through the waterway switching device, the water quality detection device can detect the quality of raw water, and when the water inlet end is communicated with the pure water waterway through the waterway switching device, the water quality detection device can detect the quality of pure water, so that the purpose of detecting the quality of raw water and pure water by adopting one set of water quality detection device is realized, and the water quality detection cost of the water purifier is reduced. Moreover, when the quality of raw water does not need to be detected, the water quality detection device can be always in contact with pure water with better water quality by communicating the water inlet end with the pure water waterway, so that the influence of a dirty layer on the water quality detection device is reduced, the service life of the water quality detection device is prolonged, the measurement precision of the water quality detection device is improved, frequent correction of the water quality detection device is avoided, and the maintenance cost of the water purifier is reduced. Meanwhile, the water quality detection device is less in dissolved air in the pure water, so that the contact between the water quality detection device and the pure water can reduce the number of attached bubbles, the influence of the attached bubbles on the measurement precision of the water quality detection device is reduced, and the measurement precision of the water quality detection device is further improved.
The technical solutions of the embodiments of the present invention will be described in detail by specific examples.
The first embodiment:
fig. 1 is a schematic view of a waterway structure of a water purifier according to a first embodiment of the present invention. As can be seen from fig. 1, the water purifier according to the embodiment of the present invention has a water inlet end and a water outlet end, and a water quality detecting device 11 is disposed on the water inlet side of the water outlet end. A pure water channel and a raw water channel which are connected in parallel are arranged between the water inlet end and the water quality detection device 11, a water channel switching device 20 is arranged on the water outlet side of the water inlet end, and the water channel switching device 20 is used for communicating the water inlet end with the pure water channel or communicating the water inlet end with the raw water channel.
As can be seen from fig. 1, since the raw water path and the pure water path are connected in parallel between the water inlet end and the water quality detection device 11, when the water path switching device 20 connects the water inlet end to the raw water path, the water quality detection device can detect the quality of the raw water, and when the water path switching device 20 connects the water inlet end to the pure water path, the water quality detection device can detect the quality of the pure water, so that the time-sharing detection of the raw water and the pure water by using one set of water quality detection device is realized, and the water quality detection cost of the water purifier is reduced. Moreover, when the quality of raw water does not need to be detected, the water quality detection device 11 can be always in contact with pure water with better water quality by communicating the water inlet end with the pure water waterway, so that the influence of a dirty layer on the water quality detection device is reduced, the service life of the water quality detection device is prolonged, the measurement precision of the water quality detection device 11 is improved, frequent correction of the water quality detection device is avoided, and the maintenance cost of the water purifier is reduced. Meanwhile, the water quality detection device is less in dissolved air in the pure water, so that the contact between the water quality detection device and the pure water can reduce the number of attached bubbles, the influence of the attached bubbles on the measurement precision of the water quality detection device is reduced, and the measurement precision of the water quality detection device is further improved.
It will be readily appreciated that the waterway monitoring device 11 may include devices for detecting TDS, TOC, COD, chromaticity, turbidity, pressure, etc. of the water quality.
In the present embodiment, the waterway switching device 20 includes a first valve 3 and a second valve 12, wherein the first valve 3 connects the pure water waterway to the water inlet end, the second valve 12 connects the raw water waterway to the water inlet end, and the on/off of the first valve 3 and the second valve 12 is controlled to communicate the water inlet end with the pure water waterway or communicate the water inlet end with the raw water waterway. In other embodiments, the waterway switching device may further include a three-way valve, a common end of the three-way valve is connected to a water outlet side of the water inlet end, two output ends of the three-way valve are respectively communicated with the pure water waterway and the raw water waterway, and the three-way valve is controlled to be turned on and off so that the water inlet end is communicated with the pure water waterway or the water inlet end is communicated with the raw water waterway.
As will be understood by those skilled in the art, in order to maintain the service life of each component in the water purifier, as shown in fig. 1, a first stage filtering device 1 is usually disposed at the water inlet end to remove impurities such as silt, rust, suspended matters and the like in raw water, so as to avoid damage of the silt, rust, suspended matters and the like to the first valve 3, the second valve 12 and other components in the water path, and ensure the service life of the components in the water path. In addition, it is easy to understand that, because the water purifier is in the water producing state for a long time, the second stage filtering device 2 can be usually disposed on the water inlet side of the first valve 3 to remove the odor in the water, and to remove the chemical substances in the water, such as chloride, pesticide and other harmful substances, so as to further prolong the service life of each component in the pure water path. It is further easily understood that the first stage filtering device 1 and the second stage filtering device 2 may be filter element type filtering devices, and may also be other types of filtering devices, and may include one filter element, or may include a plurality of filter elements, which may be specifically selected according to actual needs.
In the water production process of the water purifier, the first valve 3 is opened, the second valve 12 is closed, the water inlet end is communicated with the pure water waterway, at the moment, the water quality detection device 11 is used for detecting the quality of the pure water, and the prepared pure water flows out from the water outlet end. When the raw water quality needs to be detected, the first valve 3 is closed, the second valve 12 is opened, the water inlet end is communicated with the raw water channel, and the water quality detection device 11 is used for detecting the raw water quality. When the water quality detection device 11 detects the quality of raw water, since the pure water path is connected in parallel with the raw water path, in order to avoid the raw water from flowing into the pure water path to contaminate the pure water path, in the present embodiment, as shown in fig. 1, the pure water path includes a third valve 13 for blocking the raw water from entering the pure water path, and the third valve 13 is disposed on the water outlet side of the pure water path. When pure water quality detection is performed, the third valve 13 may be opened so that the water quality detection device 11 detects pure water quality, and when raw water quality detection is performed, the third valve 13 may be closed to prevent raw water from flowing into the pure water waterway to pollute the pure water waterway, and also to prevent the pure water in the pure water waterway from flowing into the raw water to affect detection of the raw water quality.
It will be appreciated by those skilled in the art that, in order to obtain pure water, the pure water circuit may further include a third stage filtering device 6 disposed between the first valve 3 and the third valve 13, as shown in fig. 1, to effectively remove impurities such as bacteria, germs, heavy metals, chemical residues, etc., and obtain pure water suitable for drinking. The pure water waterway can also comprise a fourth stage filtering device 10 positioned behind the third stage filtering device 6 so as to adsorb peculiar smell in the pure water, so that the pure water output by the water outlet end of the water purifier is sweet and delicious. It is easy to understand, in order to guarantee that the pure water route has sufficient water pressure in order to in time output pure water, set up the booster pump usually between first valve 3 and tertiary filter equipment 6, can also set up check valve 8 and water receiver 9 between tertiary filter equipment 6 and fourth stage filter equipment 10 to prevent that the pure water route from taking place the refluence phenomenon, water receiver 9 can make and store a certain amount of pure water in the pure water route, cushions the system water process effectively, guarantees the system water efficiency of purifier. It is easy to understand that the third stage filtering device 6 and the fourth stage filtering device 10 can be filter element type filtering devices, and can also be other types of filtering devices, and can include one filter element, and can also include a plurality of filter elements, which can be selected according to actual needs. In this embodiment, the third stage filtration device 6 comprises an ultrafiltration or microfiltration cartridge.
The raw water quality detection is performed in a non-water production state, and the raw water for water quality detection is not generally allowed to be discharged from the water outlet end, so that after the water quality detection device 11 detects the quality of the raw water, the raw water may remain in the pipeline, and in order to prevent the raw water from being discharged from the water outlet end when a user produces water and affecting the quality of the water outlet of the water purifier, in this embodiment, as shown in fig. 1, the water purifier may further include a fourth valve 14 for discharging water, an input end of the fourth valve 14 is connected between the water quality detection device 11 and the water outlet end, and an output end of the fourth valve 14 is communicated with the atmosphere. Therefore, when the raw water quality is detected, the fourth valve 14 can be opened, so that the raw water for detecting the raw water quality is discharged from the fourth valve 14, the raw water is prevented from remaining in the pipeline, and the water outlet quality of the water purifier is improved.
Although the fourth valve 14 can discharge raw water for raw water quality detection, in practical implementation, a small amount of raw water still remains in the pipeline, which affects the outlet taste of the water purifier. For example, the second valve 12 can be closed, and the first valve 3, the booster pump 5, the third valve 13 and the fourth valve 14 can be opened, so that pure water can be discharged from the fourth valve 14 to clean the pipeline, the raw water remaining in the pipeline is completely removed, and the water outlet quality of the water purifier is further improved. Of course, if the pure water reserved in the pure water path is enough to complete the cleaning of the pipeline, the first valve 3 and the booster pump 5 may be closed, and the third valve 13 and the fourth valve 14 may be opened, so that the pure water reserved in the pure water path cleans the pipeline. It is easy to understand that when the pipeline is cleaned by pure water, the raw water remained on the surface of the water quality detection device 11 can be washed and removed, so that the cleanliness of the water quality detection device 11 is ensured, and the measurement accuracy and the service life of the water quality detection device are improved.
If adopt the pure water washing pipeline of reserving in the pure water route, the washd time is too long, probably cause the water pressure in the pure water route to be less than pressure threshold, therefore, as shown in fig. 1, the pure water route can also be including the water pressure detection device 30 that is located after third pole filter equipment 6, water pressure detection device 30 is used for the water pressure in real-time detection pure water route, when the water pressure in pure water route is less than pressure threshold, the purifier makes water, guarantee that the water pressure in pure water route equals or is greater than pressure threshold, guarantee going on smoothly of washing the pipeline, guarantee simultaneously when the user uses the purifier, the play water end of purifier can in time export pure water. The water pressure detecting device 30 shown in fig. 1 is disposed between the fourth stage filtering device 10 and the third valve 13, and it is easily understood that the water pressure detecting device 30 may be disposed at any position in the pure water circuit after the third stage filtering device 6.
In order to realize the automatic control of purifier, the purifier of this embodiment can also include the system water switch and the controlling means of electricity connection, when user operation system water switch promptly the system water switch is effective, controlling means control purifier system water and carry out pure water quality testing, from the play water end output pure water of purifier, when the user does not operate system water switch promptly the system water switch invalid, controlling means carries out raw water quality testing in good time and washs the pipeline, the play water end of purifier is in the off-state. It will be readily appreciated that the water switch may be an electrical button, a valve switch or any device having an on/off state electrically connected to the control device.
In order to save water, generally, the time for cleaning the pipeline needs to be limited, and therefore, the control device of the water purifier of this embodiment includes a timing unit, and the timing unit is configured to detect the time for cleaning the pipeline, specifically, the timing unit may collect the opening time of the third valve 13 or the fourth valve 14 as the time for cleaning the pipeline, and when the time for cleaning the pipeline reaches a time threshold, the control device stops cleaning the pipeline, so that the water purifier enters a standby state.
Second embodiment:
fig. 2 is a schematic view of a water path structure of a water purifier according to a second embodiment of the present invention. The main structure of the water purifier of this embodiment is the same as that of the first embodiment, and as shown in fig. 2, the water purifier of this embodiment further includes a fifth valve 15 for draining the water in the water quality detection device 11 on the basis of the water purifier of the first embodiment, an input end of the fifth valve 15 is communicated with a water inlet side of the water quality detection device 11, and an output end of the fifth valve 15 is communicated with the atmosphere.
When the water production and the water quality detection are not required, the water purifier can close the second valve 12 and the third valve 13 and open the fourth valve 14 and the fifth valve 15. Because the output of fourth valve 14 and fifth valve 15 all communicates with the atmosphere, consequently the fourth valve 14, the pressure at the water route both ends that water quality testing device 11 and fifth valve 15 formed equals and is atmospheric pressure, make the water in the pipeline discharge under the effect of dead weight, thereby make water quality testing device 11 be in the air, just so be unfavorable for water quality testing device surface to form dirty layer, and can also avoid the aquatic bubble to adhere to water quality testing device surface, be favorable to improving water quality testing device's measurement accuracy and life-span.
The third embodiment:
fig. 3 is a schematic view of a waterway structure of a water purifier according to a third embodiment of the present invention. The main structure of the water purifier of this embodiment is the same as that of the first embodiment, except that, as shown in fig. 3, in this embodiment, the third stage filtering device 6 disposed between the first valve 3 and the third valve 13 includes a reverse osmosis filter element, so that the third stage filtering device 6 has a waste water end. The waste water end of the third stage filtering device 6 is connected with a sixth valve 7 for discharging waste water. In order to simplify the water circuit, in the present embodiment, the output end of the fourth valve 14 is connected between the waste water end of the third stage filtering device 6 and the sixth valve 7.
When the raw water quality is detected, the raw water for water quality detection is discharged through the fourth valve 14 and the sixth valve 7. Similarly, the waste water after cleaning the pipeline is discharged through the fourth valve 14 and the sixth valve 7.
The water purifier of this embodiment may also include a fifth valve 15 for draining the water at the water quality detecting device 11, an input end of the fifth valve 15 is communicated with the water inlet side of the water quality detecting device 11, and an output end of the fifth valve 15 is communicated with the atmosphere, as shown in fig. 3.
The fourth embodiment:
the fourth embodiment of the invention provides a water quality detection method of a water purifier. The water purifier has into water end and play water end, and the income water side of going out the water end is provided with water quality testing device, is provided with parallel connection's pure water route and raw water route between income water end and the water quality testing device, is provided with water route auto-change over device at the play water side of income water end, and the method includes:
performing pure water quality detection, including controlling the waterway switching device to enable the water inlet end to be communicated with a pure water waterway, and collecting pure water quality data output by the water quality detection device;
and performing raw water quality detection, wherein the water channel switching device is controlled to enable the water inlet end to be communicated with a raw water channel, and raw water quality data output by the water quality detection device is collected.
Further, when the pure water waterway comprises a third valve which is arranged at the water outlet side of the pure water waterway, the pure water quality detection also comprises opening the third valve; the raw water quality detection also comprises the step of closing the third valve.
The water purifier further comprises a fourth valve for draining water, the input end of the fourth valve is connected between the water quality detection device and the water outlet end, the output end of the fourth valve is communicated with the atmosphere, and the step of performing pure water quality detection further comprises closing the fourth valve; the raw water quality detection also comprises opening a fourth valve.
Further, the water quality detection method of the water purifier further comprises a cleaning pipeline, wherein the cleaning pipeline comprises a control water path switching device, so that the water inlet end is communicated with the pure water path, and the third valve and the fourth valve are opened.
The water quality detection method of the present embodiment will be described in detail below with reference to the water purifier of the first embodiment.
The water quality detection method of the water purifier comprises the following steps:
and carrying out pure water quality detection, wherein the water inlet end is communicated with a pure water channel by controlling the water channel switching device, and pure water quality data output by the water quality detection device is collected. The method specifically comprises the following steps: when the water producing switch is active, the control device closes the second valve 12 and the fourth valve 14, opens the first valve 3 and the third valve 13 of the booster pump 5, and the water inlet end is communicated with the pure water channel to produce water, meanwhile, the control device collects the pure water quality data output by the water quality detection device 11, and the water outlet end outputs pure water, fig. 4 is a schematic diagram of the flow direction of the channel during pure water quality detection by the water quality detection method according to the fourth embodiment of the invention. In specific implementations, the period of the pure water quality test is generally less than or equal to 1 minute/time. The water quality detection of the pure water is carried out in the water making state, the effectiveness is good, and the service life of the water quality detection device is prolonged when the water quality detection device is in the pure water environment.
And performing raw water quality detection, wherein the water channel switching device is controlled to enable the water inlet end to be communicated with a raw water channel, and raw water quality data output by the water quality detection device is collected. The method specifically comprises the following steps: when the water making switch is invalid, the control device closes the first valve 3, the booster pump 5 and the third valve 13, opens the second valve 12 and the fourth valve 14, the water inlet end is communicated with the source water waterway, the control device collects source water quality data output by the water quality detection device 11, and fig. 5 is a schematic view of the waterway flow direction during raw water quality detection of the water quality detection method according to the fourth embodiment of the invention. The raw water quality detection is carried out in a non-water production state, so that water production of a user is not influenced, the water quality detection device can be reused in a time-sharing mode, and the utilization rate of the water quality detection device is improved. In practical implementation, the quality of the raw water does not need to be frequently detected because the quality of the raw water does not change greatly. Generally, the frequency of raw water quality detection is less than or equal to 40 times/day to save water.
And the cleaning pipeline comprises a control waterway switching device, so that the water inlet end is communicated with the pure water waterway, and the third valve and the fourth valve are opened. The method specifically comprises the following steps: and (3) closing the second valve 12, opening the first valve 3, the booster pump 5, the third valve 13 and the fourth valve 14, communicating the water inlet end with a pure water waterway, and discharging the pure water from the fourth valve 14 after passing through the water quality detection device 11, wherein fig. 6 is a schematic flow diagram of the waterway during cleaning the pipeline according to the water quality detection method of the fourth embodiment of the invention. It is easy to understand that the cleaning of the pipeline generally occurs in a state that the water making switch is not effective, i.e. not making water, and the pipeline is cleaned after the raw water quality detection is performed, so as to remove the residual raw water in the pipeline. The water purifier of the first embodiment further comprises a water pressure detection device 30 and a timing unit, and therefore, the cleaning pipeline can be further embodied as: closing the second valve 12; when the pressure value output by the water pressure detection device 30 is greater than or equal to the pressure threshold value, closing the first valve 3 and the booster pump 5, opening the third valve 13 and the fourth valve 14, discharging the pure water stored in the pure water waterway from the fourth valve 14 through the third valve 13 and the water quality detection device 11, and when the pressure value output by the water pressure detection device 30 is less than the pressure threshold value, opening the first valve 3, the booster pump 5, the third valve 13 and the fourth valve 14, and discharging the pure water from the fourth valve 14 through the third valve 13 and the water quality detection device 11 while producing water; the control device collects the opening time of the third valve 13 or the fourth valve 14 output by the timing unit in real time, and when the opening time reaches a time threshold value, the second valve 12, the booster pump 5 and the fourth valve 14 are closed, the pipeline cleaning is stopped, and the water purifier enters a standby state. In practical implementation, the time for cleaning the pipeline is not too long, so as to avoid water resource waste. Typically, the time to clean the line, i.e., the time threshold, is less than or equal to 2 minutes.
Fifth embodiment:
the fifth embodiment of the invention provides a water quality detection method of a water purifier. The water quality detection method further comprises an emptying pipeline on the basis of the water quality detection method of the fourth embodiment. In this embodiment, the purifier still includes the fifth valve that is used for the water of evacuation water quality testing device department, and the input of fifth valve communicates with water quality testing device's income water side, and the output of fifth valve communicates with atmosphere. The emptying pipeline comprises a control waterway switching device, so that the water inlet end is communicated with the pure water waterway, the third valve is closed, and the fourth valve and the fifth valve are opened.
The water quality detection method of the present embodiment will be described in detail below with reference to a water purifier of a second embodiment.
The water quality detection method of the water purifier comprises the following steps:
and performing pure water quality detection, wherein the step of pure water quality detection further includes closing the fifth valve 15 on the basis of the fourth embodiment, which is not described herein again.
The raw water quality detection is performed, and the step of raw water quality detection further includes closing the fifth valve 15 on the basis of the fourth embodiment, which is not described herein again.
The step of cleaning the pipeline further includes closing the fifth valve 15 based on the fourth embodiment, which is not described herein again.
And the emptying pipeline comprises a control waterway switching device, so that the water inlet end is communicated with the pure water waterway, the third valve is closed, and the fourth valve and the fifth valve are opened. The method specifically comprises the following steps: the booster pump 5, the second valve 12, and the third valve 13 are closed, and the first valve 3, the fourth valve 14, and the fifth valve 15 are opened. It will be readily appreciated that the second valve 12 may also be closed without affecting the progress of the evacuation line. Because the output ends of the fourth valve 14 and the fifth valve 15 are both communicated with the atmosphere, the pressures at the two ends of a waterway formed by the fourth valve 14, the water quality detection device 11 and the fifth valve 15 are equal to be atmospheric pressure, so that water in the pipeline is discharged under the action of self weight, and the water quality detection device 11 is positioned in the air. Fig. 7 is a schematic view illustrating a flow direction of a waterway when a pipeline is drained in the water quality detecting method according to the fifth embodiment of the invention. After the pipeline is emptied, the water quality detection device is in the air, so that a dirty layer is not formed on the surface of the water quality detection device, bubbles in water can be prevented from being attached to the surface of the water quality detection device, and the measurement precision and the service life of the water quality detection device are improved. In practical implementation, the pipeline is generally emptied at a time other than the water quality detection, and the time for emptying the pipeline is usually not more than 1 minute.
In the description of the embodiments of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A water purifier is provided with a water inlet end and a water outlet end and is characterized in that a water quality detection device is arranged on the water inlet side of the water outlet end, a pure water waterway and a raw water waterway which are connected in parallel are arranged between the water inlet end and the water quality detection device, and a waterway switching device is arranged on the water outlet side of the water inlet end and is used for enabling the water inlet end to be communicated with the pure water waterway or enabling the water inlet end to be communicated with the raw water waterway;
the water path switching device comprises a first valve and a second valve, the first valve connects the pure water path to the water inlet end, the second valve connects the raw water path to the water inlet end, and the on-off of the first valve and the second valve is controlled so that the water inlet end is communicated with the pure water path or the water inlet end is communicated with the raw water path;
the pure water waterway comprises a third valve for preventing raw water from entering the pure water waterway, and the third valve is arranged on the water outlet side of the pure water waterway;
the water purifier also comprises a fourth valve for draining water, the input end of the fourth valve is connected between the water quality detection device and the water outlet end, and the output end of the fourth valve is communicated with the atmosphere;
when the raw water quality detection is carried out, the fourth valve is opened, so that the raw water for the raw water quality detection is discharged from the fourth valve;
the cleaning pipeline comprises a control waterway switching device, so that the water inlet end is communicated with the pure water waterway, and a third valve and a fourth valve are opened; the purifier still includes water pressure detection device and timing unit, and the washing pipeline specifically is: closing the second valve; when the pressure value output by the water pressure detection device is greater than or equal to the pressure threshold value, closing the first valve and the booster pump, opening the third valve and the fourth valve, discharging the pure water stored in the pure water waterway from the fourth valve through the third valve and the water quality detection device, and when the pressure value output by the water pressure detection device is less than the pressure threshold value, opening the first valve, the booster pump, the third valve and the fourth valve, performing water production, and simultaneously discharging the pure water from the fourth valve through the third valve and the water quality detection device; the control device collects the opening time of a third valve or a fourth valve output by the timing unit in real time, and when the opening time reaches a time threshold, the second valve, the booster pump and the fourth valve are closed, the pipeline is stopped being cleaned, and the water purifier enters a standby state;
when the waterway switching device enables the water inlet end to be communicated with the raw water waterway, the water quality detection device detects the quality of raw water, and when the waterway switching device enables the water inlet end to be communicated with the pure water waterway, the water quality detection device detects the quality of pure water; when the quality of raw water does not need to be detected, the water inlet end is communicated with the pure water waterway, so that the water quality detection device is always contacted with pure water with better water quality, the influence of a dirty layer on the water quality detection device is reduced, the service life of the water quality detection device is prolonged, the measurement precision of the water quality detection device is improved, frequent correction of the water quality detection device is avoided, and the maintenance cost of the water purifier is reduced; meanwhile, the water quality detection device is contacted with pure water to reduce the number of attached bubbles, thereby reducing the influence of the attached bubbles on the measurement precision of the water quality detection device and improving the measurement precision of the water quality detection device;
the pure water is adopted to clean the pipeline, so that the raw water residue in the pipeline is thoroughly removed, the effluent quality of the water purifier is improved, the raw water remaining on the surface of the water quality detection device is washed and removed, the cleanliness of the water quality detection device is ensured, and the measurement precision and the service life of the water quality detection device are improved.
2. The water purifier as recited in claim 1, wherein a first stage filter device is disposed at the water inlet end to remove silt, rust and suspended substances in the raw water; a second-stage filtering device is arranged on the water inlet side of the first valve to remove peculiar smell in water and remove chemical substances in the water; the third-stage filtering device is arranged between the first valve and the third valve so as to remove bacteria, germs, heavy metals and chemical residues; and the fourth stage filtering device is positioned after the third stage filtering device and is used for adsorbing peculiar smell in the pure water.
3. The water purifier as recited in claim 2, wherein said booster pump is disposed between said first valve and said third filtering device, and a check valve and a water reservoir are disposed between said third filtering device and said fourth filtering device for preventing backflow of said pure water path, wherein said water reservoir stores a certain amount of pure water in said pure water path for buffering the water generation process and ensuring the water generation efficiency of said water purifier.
4. The water purifier according to any one of claims 1-3, wherein the third valve is closed to prevent the raw water from flowing into the contaminated pure water path and to prevent the pure water in the pure water path from flowing into the raw water to affect the detection of the quality of the raw water; after the fourth valve is arranged, the fourth valve is opened, so that raw water for raw water quality detection is discharged from the fourth valve, the raw water is prevented from remaining in a pipeline, and the water outlet quality of the water purifier is improved; meanwhile, the pipeline is cleaned by pure water, and the cleaned wastewater is discharged from the fourth valve so as to remove residual raw water in the pipeline and improve the water outlet quality of the water purifier.
5. The water purifier of claim 1, further comprising a fifth valve for draining water from the water quality detector, wherein an input of the fifth valve is in communication with a water inlet side of the water quality detector, and an output of the fifth valve is in communication with atmosphere.
6. The water purifier of claim 1, wherein the purified water circuit further comprises a reverse osmosis filter element disposed between the first valve and the third valve, a sixth valve for discharging the wastewater is connected to a wastewater end of the reverse osmosis filter element, and an output end of the fourth valve is connected between the wastewater end of the reverse osmosis filter element and the sixth valve.
7. A water quality detection method of a water purifier, which is applied to the water purifier disclosed by claims 1-6, wherein the water purifier is provided with a water inlet end and a water outlet end, a water quality detection device is arranged at the water inlet side of the water outlet end, a pure water waterway and a raw water waterway which are connected in parallel are arranged between the water inlet end and the water quality detection device, and a waterway switching device is arranged at the water outlet side of the water inlet end, and the method comprises the following steps:
performing pure water quality detection, including controlling the waterway switching device to enable the water inlet end to be communicated with a pure water waterway, and acquiring pure water quality data output by the water quality detection device;
performing raw water quality detection, including controlling the waterway switching device to enable the water inlet end to be communicated with a raw water waterway, and collecting raw water quality data output by the water quality detection device;
the pure water waterway comprises a third valve, and the water purifier also comprises a fourth valve for draining water;
the method also comprises a cleaning pipeline, wherein the cleaning pipeline comprises a control waterway switching device to enable the water inlet end to be communicated with the pure water waterway, and a third valve and a fourth valve are opened.
8. The method of claim 7, wherein a third valve is disposed on an outlet side of the purified water circuit, and wherein performing the purified water quality test further comprises opening the third valve; the raw water quality detection also comprises a third valve which is closed.
9. The method of claim 8, wherein an input end of a fourth valve is connected between the water quality detection device and the water outlet end, an output end of the fourth valve is communicated with the atmosphere, and the performing the pure water quality detection further comprises closing the fourth valve; the raw water quality detection also comprises a fourth valve.
10. The method of claim 9 wherein the water quality monitoring device comprises a TDS that detects water quality.
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| CN105417630A (en) * | 2015-11-24 | 2016-03-23 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system and control method thereof |
| US20170129795A1 (en) * | 2015-11-10 | 2017-05-11 | Marmon Water (Singapore) Pte. Ltd. | Reverse osmosis water purifier |
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| US20170129795A1 (en) * | 2015-11-10 | 2017-05-11 | Marmon Water (Singapore) Pte. Ltd. | Reverse osmosis water purifier |
| CN105417630A (en) * | 2015-11-24 | 2016-03-23 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system and control method thereof |
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