WO2016155077A1

WO2016155077A1 - Water purifying apparatus and control method thereof

Info

Publication number: WO2016155077A1
Application number: PCT/CN2015/078080
Authority: WO
Inventors: 孔小斌; 刘磊; 张兴致; 马龙
Original assignee: 佛山市顺德区美的饮水机制造有限公司; 美的集团股份有限公司
Priority date: 2015-04-02
Filing date: 2015-04-30
Publication date: 2016-10-06

Abstract

A water purifying apparatus (10) comprises a water inlet path (12), a filter device (14), a purified water storage device (16), a water outlet path (18), a flushing loop (20) and a control device. The water inlet path (12) is configured to introduce tap water. The filter device (14) is connected to the water inlet path (12) to filter the tap water into clean water. The purified water storage device (16) is connected to the filter device (14) to store the clean water. The water outlet path (18) is connected to the purified water storage device (16) to provide the clean water to a user for use. The flushing loop (20) is connected to the water outlet path (18) and the water inlet path (12). The control device is configured to control the clean water in the purified water storage device (16) to flow through the water outlet path (18), the flushing loop (20) and the water inlet path (12) and flush the filter device (14) when the purified water storage device (16) has water therein and a time interval between two water-acquiring actions of the user exceeds a predetermined time. Also disclosed is a control method of the water purifying apparatus (10). The filter device is flushed and soaked by the clean water, and thereby the clean water has less impurities, such that more soluble ions on a surface of the filter device can be dissolved. In addition, a problem of high total dissolved solids (TDS) in a first cup of water can be addressed.

Description

Water purifier and water purifier control method

Priority information

Priority is claimed on Japanese Patent Application No. 201510154935.X and No. 201520196597.1, the entire disclosure of which is hereby incorporated by reference.

Technical field

The invention relates to the field of household appliances, in particular to a water purifier and a control method of the water purifier.

Background technique

The existing water purifier has the disadvantages. First, when the user does not use the water purifier for a long time, ions remaining on the surface of the filter device will crystallize, and the filter device will be blocked for a long time. Second, due to the use of influent water to rinse the filter device, there is a concentration difference between the membrane of the filter device. When the water purifier is not used for a period of time, the concentration of the membrane before and after the filter device will be neutralized, and finally reach equilibrium, so the first cup of the water purifier The water dissolved solids content (TDS) is high, which is not conducive to the health of users.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention needs to provide a water purifier.

The present invention also needs to provide a method of controlling a water purifier.

A water purifier according to a preferred embodiment of the present invention includes a water inlet, a filtering device, a water storage device, a water outlet, a flushing circuit, and a control device. The water inlet is used to access tap water. The filtering device is connected to the water inlet channel for filtering the tap water into purified water. The purified water storage device is coupled to the filtering device for storing the purified water. The water outlet is connected to the purified water storage device for the user to access the purified water. The flushing circuit and the water outlet are connected to the water inlet. The control device is configured to control the purified water in the purified water storage device through the water outlet when the water storage device has water and when the water intake time interval of the user is set twice A flush circuit and the water inlet rinse the filter device.

In the water purifier of the preferred embodiment of the present invention, since the filtering device is flushed by using the purified water, the purified water has less impurities, and more soluble ions on the surface of the filtering device can be dissolved, and the effect of rinsing the filtering device is sterilized. More preferably, it is possible to extend the life of the filter device and to ensure that the filter device can function properly during use.

In some embodiments, the filtration device is a reverse osmosis membrane filtration device or a nanofiltration cartridge filtration device.

In some embodiments, the water purifier further includes a booster pump disposed on the water inlet and between the outlet of the flushing circuit and the filtering device.

In some embodiments, the water purifier further includes a booster pump disposed on the water inlet path between an inlet of the water inlet and an outlet of the flushing circuit.

In some embodiments, the water purifier further includes a water inlet switch disposed on the water inlet switch and a water level switch disposed on the water storage device, the water level a switch for detecting whether the purified water storage device is full of water, the control device is configured to open the water inlet switch to introduce the purified water when the purified water storage device is not full, and the control device further The water inlet switch is closed when the water storage device is full.

In some embodiments, the water purifier further includes a pre-stage filtering device disposed on the water inlet path between the water inlet switch and the water inlet of the water inlet.

In some embodiments, the water purifier further includes a drain path connected to the filtering device for draining wastewater generated when the filtering device is flushed.

In some embodiments, the water purifier further includes a drain switch disposed on the drain.

In some embodiments, the water purifier further includes a post-stage filtration device located between an inlet of the flushing circuit and an outlet of the water outlet.

In some embodiments, the flushing circuit is provided with a flushing switch, and the control device is configured to control the flushing switch to open to pass the purified water through the water outlet, the flushing circuit, and the water inlet flushing station. The filtering device is further configured to close the flushing switch after the flushing is completed.

In some embodiments, the water outlet between the purified water storage device and the inlet of the flushing circuit is provided with a water pump.

A method for controlling a water purifier according to a preferred embodiment of the present invention includes the following steps:

Step 1: The control device detects whether the water storage device is full, if the water is full, the process proceeds to step 2, and if the water is not full, the process proceeds to step 5;

Step 2: The control device determines whether the water intake time interval of the two adjacent times is greater than the set time, and if yes, proceeds to step 3, and if not, proceeds to step 2;

Step 3: The control device turns on the water pump, the flushing switch, the boosting pump and the drain switch to flush the filtering device with the purified water in the purified water storage device;

Step 4: After the flushing is completed, the control device first closes the drain switch, and after the filter device is filled with clean water, the water pump, the flush switch and the booster pump are turned off;

Step 5: The control device turns on the water inlet switch and the booster pump to start using the water purifier to start water production until the net After the water storage device is full and the purified water storage device is full, the control device turns off the water inlet switch and the booster pump to stop the water production.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, Those of ordinary skill in the art will be able to obtain other figures from these drawings without the inventive effort.

1 is a schematic view of a water passage of a water purifier according to a preferred embodiment of the present invention.

2 is a schematic view of a water passage of a water purifier according to another preferred embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", " The orientation or positional relationship of the indications of "upright", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and The simplification of the description is not intended to limit or imply that the device or component that is referred to has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or location.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, a water purifier 10 according to a preferred embodiment of the present invention includes a water inlet 12, a filtering device 14, and a purified water storage. The storage device 16, the water outlet 18, the flushing circuit 20, and the control device. The water inlet 12 is for introducing tap water. The filtering device 14 is connected to the water inlet 12 for filtering the tap water into purified water. The purified water storage device 16 is connected to the filtering device 14 for storing clean water. The water outlet 18 is connected to the purified water storage device 16 for the user to access the purified water. The flushing circuit 20 and the water outlet 18 are connected to the water inlet 12 . The control device is configured to control the purified water in the purified water storage device 16 to pass through the water outlet 18, the flushing circuit 20 and the water inlet when the water storage device 16 has water and the time interval between the two water intakes of the user is greater than the set time. 12 flushes the filter device 14.

In the water purifier 10 according to the preferred embodiment of the present invention, since the filtering device 14 is cleaned by using purified water, the amount of purified water is small, so that more soluble ions on the surface of the filtering device 14 can be dissolved, and the effect of rinsing the filtering device 14 is better, thereby prolonging The life of the filter device 14 and ensuring that the filter device 14 can function properly during use.

In the present embodiment, the filtration device 14 is a reverse osmosis membrane filtration device or a nanofiltration cartridge filtration device.

In this way, calcium, magnesium, bacteria, organic matter, inorganic substances, metal ions, and radioactive substances in the influent water can be effectively removed.

In the present embodiment, the water purifier 10 further includes a booster pump 24 disposed on the water inlet 12 and located between the outlet of the flushing circuit 20 and the filtering device 14.

In this manner, the water inlet pipe 12 of the water purifier 10 is pressurized and pumped by the booster pump 24.

Referring to FIG. 2, in another embodiment, the booster pump 24 of the water purifier 10 is disposed on the water inlet 12 and between the inlet of the water inlet 12 and the outlet of the flushing circuit 20. In this manner, the water inlet pipe 12 of the water purifier 10 is pressurized and pumped by the booster pump 24.

In the present embodiment, the water purifier 10 further includes a water inlet switch 26 and a water level switch 28, and the water inlet switch 26 is disposed on the water inlet passage 12. The water level switch 28 is disposed on the purified water storage device 16, and the water level switch 28 is used to detect whether the water storage device 16 is full. The control device is used to open the water inlet switch 26 when the water storage device 16 is not full. The water, control device is also used to close the water inlet switch 26 if the water storage device 16 is full.

In this manner, the control device controls the on/off of the water inlet pipe 12 through the water inlet switch 26, and the control device detects whether the water purification device 16 is full or not by the water level switch 28.

Specifically, the water inlet switch 26 is a solenoid valve. The water level switch 28 is a reed switch, a capacitive sensor, a micro switch or an infrared sensor. Thus, the water inlet switch 26 using the solenoid valve is light in weight, low in price, fast in response, and high in safety.

In the present embodiment, the water purifier 10 further includes a pre-stage filtering device 30 disposed on the water inlet 12 and between the water inlet switch 26 and the water inlet 120 of the water inlet 12 . Thus, the water purifier 10 has a better filtering effect.

In the present embodiment, the water purifier 10 further includes a drain passage 32 connected to the filter device 14, and the drain passage 32 serves to discharge waste water generated when the filter device 14 is flushed.

In the present embodiment, the water purifier 10 further includes a drain switch 34 disposed on the drain path 32.

In this manner, the control device controls the opening and closing of the drain passage 32 through the drain switch 34.

In the present embodiment, the water purifier 10 further includes a post-stage filtering device 36 located between the inlet of the flushing circuit 20 and the outlet of the water outlet 18. Thus, the water purifier 10 has a better filtering effect.

Specifically, the water purifier 10 further includes a high pressure switch 40 disposed between the downstream filtration device 38 and the outlet of the water outlet 18. In this manner, the control device detects whether the mechanical faucet is open by the high pressure switch 40.

In the present embodiment, the flushing circuit 20 is provided with a flushing switch 42 for controlling the flushing switch 42 to open to flush the purified water through the water outlet 18, the flushing circuit 20 and the water inlet 12, and the control device is also used for the control device. After the flushing is completed, the flush switch 42 is turned off.

In this manner, the control device controls the on and off of the flushing circuit 20 through the flush switch 42.

Specifically, the flush switch 42 is a solenoid valve. Thus, the flush switch 42 using the solenoid valve is light in weight, low in price, fast in response, and high in safety.

In the present embodiment, the water discharge path 18 between the purified water storage device 16 and the inlet of the flushing circuit 20 is provided with a water pump 44.

In this manner, the water discharge path 18 of the water purifier 10 is pressurized by the water pump 44.

Specifically, the user takes the clean water, the mechanical faucet is opened, the pressure of the water outlet 18 of the water purifier 10 is lowered, the high pressure switch 40 detects that the mechanical faucet is opened and sends a signal to the control device, and the control device turns on the water pump 44 to start taking the clean water. After the water withdrawal is completed, the mechanical faucet is closed, the pressure of the water outlet 18 of the water purifier 10 is raised, the high pressure switch 40 sends a signal to the control device, and the control device turns off the water pump 44 to stop the water intake.

The method for controlling the water purifier 10 according to the preferred embodiment of the present invention includes the following steps:

Step 1: The control device detects whether the water storage device 16 is full of water, if the water is full, the process proceeds to step 2, and if the water is not full, the process proceeds to step 5;

Step 3: The control device turns on the water pump 44, the flush switch 42, the booster pump 24, and the drain switch 34 to flush the filter device 14 using the purified water in the purified water storage device 16;

Step 4: After the flushing is completed, the control device first closes the drain switch 34, and after the filter device is filled with clean water, the water pump 44, the flush switch 42 and the boost pump 24 are turned off;

Step 5: The control device activates the water inlet switch 26 and the booster pump 244 to cause the water purifier 10 to start water production until the water storage device 16 is full. After the water storage device 16 is full, the control device turns off the water inlet switch 26 and The booster pump 24 stops the water production.

Specifically, the period from the start of rinsing of the filtration device 14 to the end of the rinsing is the rinsing time, and the calculation method of the rinsing time: (the volume of the purified water storage device 16 V1 - the membrane volume V2 of the filtration device 14) / the flow rate of the water pump 44 v.

In the method for controlling the water purifier 10 according to the preferred embodiment of the present invention, since the filtering device 14 is cleaned using the purified water, the amount of purified water is small, and more soluble ions on the surface of the filtering device 14 can be dissolved, and the effect of rinsing the filtering device 14 is better. Thereby, the life of the filter device 14 can be prolonged and the filter device 14 can be properly filtered during use. In addition, after the filter device 14 is filled with clean water, the water pump 44, the flush switch 42 and the booster pump 24 are turned off, so that the filter device 14 can be immersed in the clean water, and the difference in the concentration of the filter device 14 before and after the film is small. Solve the problem of high solid content (TDS) dissolved in the first cup of water to ensure the purity of the user's drinking water.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it is understood that the foregoing embodiments are illustrative and not restrictive Variations, modifications, alterations and variations of the above-described embodiments are possible within the scope of the invention. The scope of the invention is defined by the appended claims and their equivalents.

Claims

A water purifier characterized by comprising:

Inlet water channel for access to tap water;

a filtering device connected to the water inlet channel for filtering the tap water into purified water;

a purified water storage device connected to the filtering device for storing the purified water;

a water outlet connected to the purified water storage device for the user to access the purified water;

a flushing circuit connecting the water outlet and the water inlet; and

a control device, configured to control the purified water in the purified water storage device through the water outlet when the water storage device has water and when the water intake time interval between the two times is greater than a set time A flush circuit and the water inlet rinse the filter device.
The water purifier according to claim 1, wherein the filtering device is a reverse osmosis membrane filtration device or a nanofiltration cartridge filtration device.
A water purifier according to claim 1, wherein said water purifier further comprises a booster pump, said booster pump being disposed on said water inlet path and located at an outlet of said flushing circuit and said filtering Between devices.
A water purifier according to claim 1, wherein said water purifier further comprises a booster pump, said booster pump being disposed on said water inlet path and located at said inlet of said water inlet and said flushing Between the exits of the loop.
The water purifier according to claim 1, wherein the water purifier further comprises a water inlet switch and a water level switch, the water inlet switch is disposed on the water inlet, and the water level switch is disposed at the water level a water level storage device, wherein the water level switch is configured to detect whether the water purification device is full or not, and the control device is configured to open the water inlet switch to introduce a device when the water storage device is not full The water is cleaned, and the control device is further configured to close the water inlet switch if the water storage device is full.
A water purifier according to claim 5, wherein said water purifier further comprises a pre-stage filtering device, said pre-stage filtering device being disposed on said water inlet path and located at said water inlet switch and said water inlet switch Between the water inlets of the water inlet.
A water purifier according to claim 5, wherein said water purifier further comprises a drain path connected to said filter means for draining waste water generated when said filter means is flushed.
A water purifier according to claim 7, wherein said water purifier further comprises a drain switch disposed on said drain.
The water purifier according to claim 1, wherein said water purifier further comprises a post-stage filtering device, said post-stage filtering device being located between an inlet of said flushing circuit and an outlet of said water outlet.
A water purifier according to claim 1, wherein said flushing circuit is provided with a flushing switch, said control means for controlling said flushing switch to open to pass said purified water through said water outlet, said said The flushing circuit and the water inlet flush the filtering device, and the control device is further configured to close the flushing switch after the flushing is completed.
A water purifier according to claim 1, wherein said water outlet between said purified water storage means and said inlet of said flushing circuit is provided with a water pump.
A method for controlling a water purifier, comprising the steps of:

Step 1: The control device detects whether the water storage device is full, if the water is full, the process proceeds to step 2, and if the water is not full, the process proceeds to step 5;

Step 2: The control device determines whether the water intake time interval of the two adjacent times is greater than the set time, and if yes, proceeds to step 3, and if not, proceeds to step 2;

Step 3: The control device turns on the water pump, the flushing switch, the boosting pump and the drain switch to flush the filtering device with the purified water in the purified water storage device;

Step 4: After the flushing is completed, the control device first closes the drain switch, and after the filter device is filled with clean water, the water pump, the flush switch and the booster pump are turned off;

Step 5: The control device turns on the water inlet switch and the booster pump to cause the water purifier to start water production until the water storage device is full, and after the water storage device is full, the control device is closed. The water inlet switch and the booster pump stop water production.