Water supply equipment, cleaning method and computer storage medium

Abstract

The invention relates to the technical field of smart home equipment, in particular to water supply equipment, a cleaning method and a computer storage medium. The water supply equipment comprises a water production main path, a wastewater branch path, a composite filter element, a cleaning filter element and a reverse osmosis filter element, and further comprises a first mounting part and a second mounting part which are sequentially arranged on the water production main path in the flowing direction of raw water, one of the composite filter element and the cleaning filter element is mounted on the first mounting part, and the other one of the composite filter element and the cleaning filter element is mounted on the second mounting part. The reverse osmosis filter element is mounted on the second mounting part; a water inlet of the wastewater branch is communicated with a wastewater opening of the reverse osmosis filter element. According to the water supply equipment disclosed by the invention, the reverse osmosis filter element can be cleaned by utilizing the cleaning filter element, so that raw water impurities attached in the reverse osmosis filter element are removed, the service life of the reverse osmosis filter element is prolonged, the residual use value of the reverse osmosis filter element is fully utilized, resources are saved, and the use cost of the water supply equipment is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and in particular to a water supply equipment, a cleaning method and a computer storage medium. Background Art

[0002] With the improvement of material living standards, water supply equipment has gradually become a standard for quality life. Among them, reverse osmosis water purifiers are very popular because they can effectively remove a variety of pollutants in tap water. In existing equipment, water supply equipment is often limited by the service life of the pre-filter element. After the service life of the pre-filter element expires, the filter module of the water supply equipment needs to be replaced as a whole, but the reverse osmosis filter element is still useful, and the replacement of the filter module as a whole causes a waste of resources. Summary of the invention

[0003] The purpose of the present invention is to at least solve the problem of waste of resources caused by replacing the whole filter module when the reverse osmosis filter element has use value. This purpose is achieved by the following methods:

[0004] The first aspect of the present invention proposes a water supply device, which includes a water production main circuit, a wastewater branch circuit, a composite filter element, a cleaning filter element and a reverse osmosis filter element. Along the flow direction of raw water, the water supply equipment also includes a first installation part and a second installation part which are sequentially arranged on the water production main circuit, one of the composite filter element and the cleaning filter element is installed on the first installation part, the reverse osmosis filter element is installed on the second installation part, and the water inlet of the wastewater branch circuit is connected to the wastewater outlet of the reverse osmosis filter element.

[0005] According to the water supply equipment of the present invention, when the service life of the composite filter element in the water supply equipment reaches the preset service life and the service life of the reverse osmosis filter element has not reached the preset service life, the cleaning filter element replaces the composite filter element and is installed on the first installation part, so that the cleaning filter element can be used to clean the reverse osmosis filter element to remove raw water impurities attached to the reverse osmosis filter element, extend the service life of the reverse osmosis filter element, and solve the problem of raw water impurities clogging the reverse osmosis filter element and slow water production speed due to long-term use. After the reverse osmosis filter element is cleaned, the new composite filter element replaces the cleaning filter element and is installed on the first installation part, and the cleaned reverse osmosis filter element continues to be used, making full use of the remaining use value of the reverse osmosis filter element, saving resources, and saving the use cost of the water supply equipment.

[0006] In addition, the water supply equipment according to the present invention may also have the following additional technical features:

[0007] In some embodiments of the present invention, the water supply equipment also includes a water channel adapter plate, and a plurality of mutually blocked water channel passages are provided inside the water channel adapter plate. The first mounting portion is configured as a first plug group provided on the water channel adapter plate and connected to the water channel passage, and the second mounting portion is configured as a second plug group provided on the water channel adapter plate and connected to the water channel passage. The composite filter element or the cleaning filter element can be detachably plugged into the first plug group, and the reverse osmosis filter element can be detachably plugged into the second plug group; the main water production path includes a water inlet section and a water outlet section, and the water inlet section is connected to the water outlet section through the water channel adapter plate.

[0008] In some embodiments of the present invention, the multiple water passages include a first water inlet branch, a first water outlet branch, a second water inlet branch and a second water outlet branch; when the cleaning filter element is installed in the first installation position, the cleaning filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch, and the cleaning filter element is also connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

[0009] In some embodiments of the present invention, the composite filter element includes a pre-filter element and a post-filter element. When the composite filter element is installed in the first installation position, the pre-filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch, and the post-filter element is connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

[0010] In some embodiments of the present invention, the water supply equipment further comprises a flushing branch, and a water inlet of the flushing branch is connected to a water outlet of the second water outlet branch.

[0011] In some embodiments of the present invention, the water supply equipment also includes: a first one-way valve, arranged in the second water inlet branch, the first one-way valve is unidirectionally conductive in the direction from the reverse osmosis filter element to the water outlet end of the second water inlet branch; a second one-way valve, arranged in the flushing branch, the second one-way valve is unidirectionally conductive in the direction from the second water outlet branch to the water outlet end of the flushing branch.

[0012] In some embodiments of the present invention, the water supply equipment further includes: a first solenoid valve, arranged in the water outlet section; a second solenoid valve, arranged in the flushing branch; and a waste water valve, arranged in the waste water branch.

[0013] In some embodiments of the present invention, the water supply equipment further includes: a first TDS probe and a second TDS probe, wherein the first TDS probe is disposed at the first water inlet branch, and the second TDS probe is disposed at the second water outlet branch.

[0014] In some embodiments of the present invention, the water supply equipment also includes: a first water tank, the first water tank is connected to the water outlet of the water outlet section, and a second water tank is respectively connected to the water inlet of the water inlet section, the water outlet of the wastewater branch and the water outlet of the flushing branch; a self-priming pump is arranged in the water inlet section and is used to drive the water in the water inlet section to flow from the water inlet of the water inlet section to the first water inlet branch.

[0015] In some embodiments of the present invention, the water channel includes a wastewater channel, and the reverse osmosis filter element is connected to the wastewater branch through the wastewater channel.

[0016] The second aspect of the present invention also proposes a cleaning method for water supply equipment, which includes: obtaining a first operating time of the water supply equipment; issuing a core replacement cleaning signal based on the first operating time being greater than a preset time; installing the cleaning filter element on the first installation part according to the core replacement cleaning signal to replace the composite filter element; controlling the main water production path and the wastewater branch path to flush the reverse osmosis filter element.

[0017] In some embodiments of the present invention, the step of controlling the main water production path and the wastewater branch path includes: controlling the water inlet section, the first water inlet branch, the first water outlet branch, the wastewater path and the wastewater branch to be connected in sequence, and controlling the water outlet section and the flushing branch to be disconnected; the step of flushing the reverse osmosis filter element includes: performing a first round of flushing on the reverse osmosis filter element for a first time period; performing a second round of flushing on the reverse osmosis filter element for a second time period; the second time period is greater than the first time period. In some embodiments of the present invention, the steps of the first round of flushing and the second round of flushing also include: sending a first second water tank water change signal; and starting the second round of flushing according to the replacement of raw water in the second water tank.

[0018] In some embodiments of the present invention, after the second round of core flushing step, the cleaning method also includes: controlling the water inlet section, the first water inlet branch, the first water outlet branch, the second water inlet branch, the second water outlet branch and the flushing branch to be connected in sequence, controlling the wastewater branch and the water outlet section to be disconnected, and performing a third round of flushing on the reverse osmosis filter element and continuing for a third time period.

[0019] In some embodiments of the present invention, before the third round of flushing step, the method further includes: sending a second second water tank water change signal; and starting the third round of flushing according to the replacement of raw water in the second water tank.

[0020] In some embodiments of the present invention, after completing the third round of flushing steps, the cleaning method also includes: installing a new composite filter element on the first mounting portion to replace the cleaning filter element; controlling the water inlet section, the first water inlet branch, the first water outlet branch, the second water inlet branch, the second water outlet branch, the flushing branch and the wastewater branch to be connected in sequence, controlling the water outlet section to be disconnected, and flushing the composite filter element and the reverse osmosis filter element for a fourth time period.

[0021] According to the third aspect of the present invention, a computer storage medium is also proposed, on which computer readable instructions are stored. When the computer readable instructions are read by one or more processors, one or more of the processors execute the cleaning method of the water supply equipment as described in the technical solution of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0023] Figure 1 A schematic diagram of the internal structure of a water supply device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic structural diagram of a composite filter element, a reverse osmosis filter element, and a waterway adapter plate according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a waterway adapter plate according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a cleaning filter element according to an embodiment of the present invention;

[0027] Figure 5 A schematic block diagram of the water connection of various components in a water supply device according to an embodiment of the present invention;

[0028] Figure 6 It is a block diagram schematic diagram of a control device according to an embodiment of the present invention being electrically connected to a self-priming pump, a first solenoid valve, a second solenoid valve and a wastewater valve respectively;

[0029] Figure 7 A flowchart of a method for cleaning a water supply device according to an embodiment of the present invention;

[0030] Figure 8 A flowchart of a method for cleaning water supply equipment according to another embodiment of the present invention;

[0031] Fig. 9 A flowchart of a method for cleaning water supply equipment according to another embodiment of the present invention;

[0032] Fig.10 This is a working flow chart of a method for cleaning water supply equipment according to another embodiment of the present invention.

[0033] The reference numerals in the accompanying drawings represent the following:

[0034] 1. Water supply equipment;

[0035] 31. Composite filter element; 32. Reverse osmosis filter element; 301. Cleaning filter element;

[0036] 38, water circuit adapter plate; 381, first plug group; 3811, first plug; 3812, second plug; 3813, third plug; 3814, fourth plug; 382, ​​second plug group; 3821, fifth plug; 3822, sixth plug; 3823, seventh plug; 383, first water inlet branch; 384, first water outlet branch; 385, second water inlet branch; 386, second water outlet branch; 387, wastewater passage;

[0037] 34. First one-way valve; 35. Second one-way valve; 36. First solenoid valve; 37. Second solenoid valve; 391. First TDS probe; 392. Second TDS probe; 310. Self-priming pump;

[0038] 20. First water tank; 12. Second water tank;

[0039] 81, main water supply route; 811, water inlet section; 812, water outlet section;

[0040] 82. Wastewater branch; 821. Wastewater valve;

[0041] 83. Flushing branch;

[0042] 200. Control device; 2001. Processor; 2002. Memory. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0044] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0045] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0046] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0048] According to the embodiment of the present invention, please combine Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a water supply device 1 is proposed, which includes a water production main path 81, a wastewater branch path 82, a composite filter element 31, a cleaning filter element 301 and a reverse osmosis filter element 32. Along the flow direction of raw water, the water supply device 1 also includes a first installation part and a second installation part sequentially arranged on the water production main path 81, one of the composite filter element 31 and the cleaning filter element 301 can be selectively installed on the first installation part, the reverse osmosis filter element 32 is installed on the second installation part, and the water inlet of the wastewater branch path 82 is connected to the wastewater outlet of the reverse osmosis filter element 32. Specifically, when the composite filter element 31 is installed on the first installation part, the raw water first flows along the water production main path 81 to the composite filter element 31 of the first installation part, and the raw water is filtered for the first time by the composite filter element 31 to remove some impurities and pollutants. The water filtered by the composite filter element 31 continues to flow to the reverse osmosis filter element 32 installed in the second installation part for a second filtration. The reverse osmosis filter element 32 can efficiently remove tiny particles, heavy metal ions, organic matter, etc. in the water, and generates pure water and waste water after filtration. The pure water flows back to the main water production line 81 and is output to the outside to provide pure drinking water to users, while the waste water is discharged through the wastewater branch line 82.

[0049] According to the water supply equipment 1 of the present invention, when the service life of the composite filter element 31 in the water supply equipment 1 reaches the preset service life and the service life of the reverse osmosis filter element 32 has not reached the preset service life, the cleaning filter element 301 replaces the composite filter element 31 and is installed on the first installation part, so that the cleaning filter element 301 can be used to clean the reverse osmosis filter element 32. The cleaning filter element 301 can generate a specific water flow or chemical action to remove raw water impurities attached to the reverse osmosis filter element 32, extend the service life of the reverse osmosis filter element 32, and solve the problem of raw water impurities clogging the reverse osmosis filter element 32 and slow water production speed due to long-term use. After the reverse osmosis filter element 32 is cleaned, the new composite filter element 31 replaces the cleaning filter element 301 and is installed on the first installation part, and the cleaned reverse osmosis filter element 32 continues to be used, so as to make full use of the remaining use value of the reverse osmosis filter element 32, save resources, and save the use cost of the water supply equipment 1.

[0050] It should be noted that there can be multiple types of cleaning filter element 301, such as physical cleaning filter element 301, chemical cleaning filter element 301, etc. Physical cleaning filter element 301 can remove impurities by mechanical action or water flow impact, and chemical cleaning filter element 301 can dissolve or decompose impurities by releasing specific chemicals.

[0051] In this embodiment, the cleaning filter element 301 is a chemical cleaning filter element 301, and the cleaning filter element 301 mainly releases specific chemicals to dissolve or decompose raw water impurities attached to the reverse osmosis filter element 32. When water flows through the cleaning filter element 301, the cleaning filter element 301 releases chemicals, and the chemicals flow to the reverse osmosis filter element 32 with the water, so that the chemicals in the cleaning filter element 301 react chemically with the impurities in the reverse osmosis filter element 32, so that they are separated from the surface or pores of the reverse osmosis filter element 32. For example, for some scale impurities formed by calcium, magnesium ions, etc., the chemical cleaning filter element 301 may release acidic substances, which react with the scale to convert it into soluble salts, which are then washed away by the water flow. For organic impurities, chemical substances such as oxidants may be released to oxidize and decompose the organic matter into smaller molecules, making it easier to be washed away, so as to achieve the purpose of removing raw water impurities attached to the reverse osmosis filter element 32, preventing impurities from clogging the reverse osmosis filter element 32, and extending the service life of the reverse osmosis filter element 32.

[0052] Understandably, a cleaning filter element 301 using a combination of multiple chemical substances can be selected according to the specific conditions of the impurities on the reverse osmosis filter element 32. For example, in the case of both scale and organic impurities, the cleaning filter element 301 can release acidic substances and oxidants at the same time to achieve a better cleaning effect.

[0053] In some embodiments, please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the water supply equipment 1 also includes a water channel adapter plate 38, and a plurality of mutually blocked water channels are arranged inside the water channel adapter plate 38. The first mounting portion is configured as a first plug group 381 arranged on the water channel adapter plate 38 and connected to the water channel. The first plug group 381 includes a plurality of plugs protruding from the water channel adapter plate 38 and connected to the water channel in the water channel adapter plate 38. The composite filter element 31 or the cleaning filter element 301 is provided with a socket that is plugged in and matched with the plug in the first plug group 381. The composite filter element 31 or the cleaning filter element 301 is plugged into the first plug group 381 in a detachable manner. When it is necessary to replace the composite filter element 31 or use the cleaning filter element 301 to clean the reverse osmosis filter element 32, it is only necessary to unplug the corresponding composite filter element 31 or the cleaning filter element 301 from the first plug group 381 and then insert a new filter element. The operation is very convenient.

[0054] The second mounting portion is configured as a second plug group 382 disposed on the water channel adapter plate 38 and connected to the water channel. The second plug group 382 includes a plurality of plugs protruding from the water channel adapter plate 38 and connected to the water channel in the water channel adapter plate 38. The reverse osmosis filter element 32 is provided with a socket that is plugged into and matched with the plug in the second plug group 382. The reverse osmosis filter element 32 is plugged into the second plug group 382 in a detachable manner, which is convenient for operation when the reverse osmosis filter element 32 needs to be maintained or replaced.

[0055] Please combine Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the main water production path 81 includes an inlet section 811 and an outlet section 812. The inlet section 811 is connected to the outlet section 812 through the water path adapter plate 38. The raw water enters the water path adapter plate 38 from the inlet section 811, passes through the composite filter element 31 and the reverse osmosis filter element 32, and then flows into the outlet section 812 from the water path adapter plate 38, and finally outputs pure water. Alternatively, in the process of cleaning the reverse osmosis filter element 32, the raw water enters the water path adapter plate 38 from the inlet section 811, passes through the cleaning filter element 301 and the reverse osmosis filter element 32, and then flows out from the wastewater branch 82, thereby completing the cleaning operation of the reverse osmosis filter element 32.

[0056] In this embodiment, the composite filter element 31 or the cleaning filter element 301 is plugged into the first plug group 381 in a detachable manner, so as to facilitate the rapid replacement of the composite filter element 31 and the cleaning filter element 301 and install them in the water supply device 1, simplifying the cleaning steps of the reverse osmosis filter element 32, and the plugging operation of the composite filter element 31 and the cleaning filter element 301 is simple and convenient, and does not require professional technicians to operate, and ordinary users can also easily complete it. This reduces the difficulty of cleaning the reverse osmosis filter element 32, allowing users to more conveniently maintain the water supply device 1, ensuring the normal operation of the equipment and the safety of water quality.

[0057] In detail, the plurality of water channels include a first water inlet branch 383, a first water outlet branch 384, a second water inlet branch 385, a second water outlet branch 386 and a waste water channel 387, and the water outlet end of the waste water channel 387 is connected to the water inlet end of the waste water channel 82. The first plug group 381 includes a first plug 3811 connected to the first water inlet branch 383, a second plug 3812 connected to the water inlet end of the first water outlet branch 384, a third plug 3813 connected to the water outlet end of the second water inlet branch 385, and a fourth plug 3814 connected to the water inlet end of the second water outlet branch 386. The second plug group 382 includes a fifth plug 3821 connected to the water outlet end of the first water outlet branch 384, a sixth plug 3822 connected to the water inlet end of the second water inlet branch 385, and a seventh plug 3823 connected to the water inlet end of the waste water channel 387.

[0058] The cleaning filter element 301 is provided with four jacks, which are detachably connected to the first plug 3811, the second plug 3812, the third plug 3813 and the fourth plug 3814 respectively. The reverse osmosis filter element 32 is provided with three jacks, which are detachably connected to the fifth plug 3821, the sixth plug 3822 and the seventh plug 3823 respectively, so that when the cleaning filter element 301 is installed in the first installation position, the cleaning filter element 301 is connected to the water inlet section 811 through the first water inlet branch 383, and is connected to the reverse osmosis filter element 32 through the first water outlet branch 384. The cleaning filter element 301 is also connected to the reverse osmosis filter element 32 through the second water inlet branch 385, and is connected to the water outlet section 812 through the second water outlet branch 386. The reverse osmosis filter element 32 is connected to the wastewater branch 82 through the wastewater passage 387.

[0059] In this embodiment, Figure 5As shown, in the process of cleaning the reverse osmosis filter element 32, the flow path of the raw water is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the waste water passage 387, the waste water branch 82, and the waste water after flushing the reverse osmosis filter element 32 is discharged through the waste water branch 82. The above raw water flow sequence can be used to fully flush the reverse osmosis filter element 32 by flushing the filter element. It should be noted that in the process of cleaning the reverse osmosis filter element 32, the flow of raw water also includes another flow path, which is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, and the second water outlet branch 386. The waste water after flushing the reverse osmosis filter element 32 is discharged through the second water outlet branch 386. In this way, the reverse osmosis filter element 32 can be flushed from two different paths to ensure that the water flow can reach different parts of the reverse osmosis filter element 32, including some hard-to-reach corners and pores. In this way, impurities attached to the filter element can be removed more comprehensively, and the thoroughness of cleaning can be improved. Water flows in different paths can produce different flushing directions and forces, forming multi-angle impacts on impurities. For example, water flow in one path can pass through the reverse osmosis filter element 32 and then flush the reverse osmosis filter element 32 from the waste water outlet of the reverse osmosis filter element 32, and water flow in another path can pass through the reverse osmosis filter element 32 and flush the reverse osmosis filter element 32 from the pure water outlet of the reverse osmosis filter element 32 (that is, the socket that is plugged into and cooperates with the sixth plug 3822), thereby more comprehensively removing impurities attached to the reverse osmosis filter element 32 and improving the thoroughness of cleaning.

[0060] In some embodiments, please combine Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the composite filter element 31 includes a front filter element (not shown in the figure) and a rear filter element (not shown in the figure), the front filter element is provided with a jack that matches the first plug 3811 and the second plug 3812, and the rear filter element is provided with a jack that matches the third plug 3813 and the fourth plug 3814. When the composite filter element 31 is installed in the first installation position, the front filter element is connected to the first water inlet branch 383 and the first outlet branch 384 through the first plug 3811 and the second plug 3812. The water branch 384 is connected, and the post-filter element is connected to the second water inlet branch 385 and the second water outlet branch 386 through the third plug 3813 and the fourth plug 3814 respectively, so that the pre-filter element is connected to the water inlet section 811 through the first water inlet branch 383, and is connected to the reverse osmosis filter element 32 through the first water outlet branch 384, and the post-filter element is connected to the reverse osmosis filter element 32 through the second water inlet branch 385, and is connected to the water outlet section 812 through the second water outlet branch 386.

[0061] During the water production process of the water supply device 1, the flow path of the raw water is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the pre-filter, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, and the reverse osmosis filter 32. After the raw water enters the reverse osmosis filter 32, pure water and waste water will be generated. The pure water passes through the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the post-filter, the fourth plug 3814, the second water outlet branch 386, and the water outlet section 812 in sequence, and the waste water is discharged from the waste water port of the reverse osmosis filter 32 through the seventh plug 3823, the waste water passage 387, and the waste water branch 82. That is, the raw water first passes through the pre-filter for the first filtration, then passes through the reverse osmosis filter 32 for the second filtration, and then passes through the post-filter for the third filtration, and the pure water generated is finally output through the water outlet section 812.

[0062] In this embodiment, please combine Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the water supply device 1 also includes a flushing branch 83, and the water inlet of the flushing branch 83 is connected to the water outlet of the second water outlet branch 386. By setting the flushing branch 83, when flushing the reverse osmosis filter element 32, the pure water outlet of the reverse osmosis filter element 32 can also be flushed, that is, the flushing path is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83, and the waste water after flushing the reverse osmosis filter element 32 is discharged through the flushing branch 83.

[0063] Furthermore, the water supply device 1 further includes a first one-way valve 34, a second one-way valve 35, a first water tank 20, a second water tank 12 and a self-priming pump 310. The first one-way valve 34 is arranged on the second water inlet branch, and the first one-way valve 34 is unidirectionally conducted in the direction from the reverse osmosis filter element 32 to the post-filter element. The pure water filtered by the reverse osmosis filter element 32 flows from the pure water outlet of the reverse osmosis filter element 32 into the second water inlet branch 385 and then flows into the post-filter element through the first one-way valve 34 and the third plug 3813. The second one-way valve 35 is arranged on the flushing branch 83, and the second one-way valve 35 is unidirectionally conducted in the direction from the second water outlet branch 386 to the second water tank 12. The first water tank 20 is connected to the water outlet of the water outlet section 812, and the second water tank 12 is respectively connected to the water inlet of the water inlet section 811, the water outlet of the wastewater branch 82 and the water outlet of the flushing branch 83. The self-priming pump 310 is arranged in the water inlet section 811 and is used to drive the water in the water inlet section 811 to flow from the water inlet of the water inlet section 811 to the first water inlet branch 383. In the process of flushing the pure water outlet of the reverse osmosis filter element 32, the second one-way valve 35 can prevent the water containing impurities after flushing the reverse osmosis filter element 32 from flowing back from the second water tank 12 to the second water outlet branch 386 and the water outlet section 812, so as to prevent the water outlet section 812 and the first water tank 20 connected to the water outlet section 812 from being polluted.

[0064] Furthermore, the water supply device 1 further includes a first solenoid valve 36, a second solenoid valve 37 and a wastewater valve 821, wherein the first solenoid valve 36 is arranged at the water outlet section 812, the second solenoid valve 37 is arranged at the flushing branch 83, and the wastewater valve 821 is arranged at the wastewater branch 82. The first solenoid valve 36 and the second solenoid valve 37 respectively control the connection or closing of the water outlet section 812 and the flushing branch 83, thereby controlling the path of water flow. The wastewater valve 821 controls the water flow of the wastewater branch 82 by controlling the size of its own opening.

[0065] In detail, in the process of cleaning the reverse osmosis filter element 32 using the cleaning filter element 301, in the path of flushing the reverse osmosis filter element 32 through the wastewater branch 82, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the wastewater valve 821 increases its opening. The flow path of the raw water is, in sequence, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82.

[0066] In the path of flushing the reverse osmosis filter element 32 using the flushing branch 83, the first solenoid valve 36 is closed, the second solenoid valve 37 is opened, and the waste water valve 821 is reduced to the minimum opening. At this time, the flow path of the raw water is, in sequence, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83. The waste water after flushing the reverse osmosis filter element 32 is discharged through the flushing branch 83.

[0067] Furthermore, if Figure 5 As shown, the water supply equipment 1 also includes a first TDS probe 391 and a second TDS probe 392, the first TDS probe 391 is arranged in the first water inlet branch 383, and the second TDS probe 392 is arranged in the second water outlet branch 386. The first TDS probe 391 is used to detect the inlet TDS of the raw water in the first water inlet branch 383, and the second TDS probe 392 is used to detect the outlet TDS of the pure water in the second water outlet branch 386. According to the inlet TDS and outlet TDS detected by the first TDS probe 391 and the second TDS probe 392, it can be known whether the desalination rate of the pure water in the outlet waterway channel meets the standard. Among them, TDS is the abbreviation of Total Dissolved Solids, and its full name in Chinese is "total dissolved solids", also known as the total amount of dissolved solids. TDS refers to the total amount of all solutes in water, including the content of both inorganic and organic matter. TDS mainly reflects the concentration of calcium, magnesium, sodium, potassium and other ions in water and the total amount of dissolved solids in water.

[0068] Understandably, when the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate is not up to standard, the second solenoid valve 37 is opened, the first solenoid valve 36 is closed, and the water in the second outlet branch 386 flows to the flushing branch 83, and finally flows back to the second water tank 12 or is directly discharged as waste water through the wastewater direct discharge pipe. When the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate is up to standard, the second solenoid valve 37 is closed, the first solenoid valve 36 is opened, and the water in the second outlet branch 386 flows to the outlet section 812 and is stored in the first water tank 20 for user use.

[0069] For details, please combine Figure 2 and Figure 5As shown, when the composite filter element 31 is installed in the first installation part and the water supply device 1 is producing water, the raw water in the second water tank 12 flows into the first water inlet branch 383 through the water inlet section 811. At this time, the first TDS probe 391 detects the inlet TDS of the raw water. The raw water enters the pre-filter element through the first plug 3811, flows into the first water outlet branch 384 from the second plug 3812 after being roughly filtered by the pre-filter element, and then enters the reverse osmosis filter element 32 through the fifth plug 3821. After being filtered by the reverse osmosis filter element 32, one path of pure water and one path of waste water are divided. The pure water flows into the second water inlet branch 385 from the reverse osmosis outlet through the sixth plug 3822, and then flows into the post-filter element through the first one-way valve 34 and the third plug 3813 for re-filtration. The re-filtered pure water flows into the second water outlet branch 386 through the fourth plug 3814. At this time, the second TDS probe 392 detects the outlet TDS of the pure water. After the outlet water desalination rate reaches the standard, the second solenoid valve 37 is closed, the first solenoid valve 36 is opened, the water in the second outlet branch 386 flows to the outlet section 812, and the water in the outlet section 812 flows and is stored in the first water tank 20. When the first TDS probe 391 and the second TDS probe 392 detect that the outlet water desalination rate does not reach the standard, the second solenoid valve 37 is opened, the first solenoid valve 36 is closed, and the pure water in the second outlet branch 386 flows through the flushing branch 83 and sequentially passes through the second check valve 35 and the second solenoid valve 37 into the second water tank 12, or is directly discharged as waste water through the waste water direct discharge pipe. The waste water filtered by the reverse osmosis filter element 32 is directly discharged from the waste water outlet through the seventh plug 3823 and the waste water branch 82, and then through the waste water valve 821 to the second water tank 12, or is directly discharged as waste water through the waste water direct discharge pipe.

[0070] When the user takes drinking water, the outlet TDS will increase with the increase of water taking time due to the reflux of wastewater. Therefore, it is designed that when the user takes drinking water for a certain time, the wastewater direct discharge program is started, that is, the normal water production state is maintained, the second solenoid valve 37 is opened, the first solenoid valve 36 is closed, and the wastewater in the flushing branch 83 and the wastewater branch 82 is directly discharged through the wastewater direct discharge pipeline, and does not enter the second water tank 12. The outlet TDS can be restored to the initial level in a short time, and the impact on the drinking water flux is small.

[0071] According to the embodiment of the present invention, please combine Figure 5 and Figure 7 As shown, a cleaning method of the water supply device 1 is also proposed, and the cleaning method comprises the following steps:

[0072] Step S101: obtaining the first operating time of the water supply device 1;

[0073] Step S102: sending a core replacement and cleaning signal according to the first running time being greater than a preset time;

[0074] Step S103: installing the cleaning filter element 301 on the first installation portion according to the core replacement cleaning signal to replace the composite filter element 31;

[0075] Step S104 : Control the passage of the water production main path 81 and the wastewater branch path 82 to flush the reverse osmosis filter element 32 .

[0076] In step S101 and step S102, the first operation time of the water supply device 1 refers to the usage time of the water supply device 1.

[0077] During operation, the water supply device 1 will continuously record its usage time, which is the first operation time. The time information can be accurately obtained through a built-in timer or a control system connected to the device. For example, the water supply device 1 starts timing when it is first started, and the timer increases the corresponding value every time a unit of time passes, thereby reflecting the operation time of the device in real time.

[0078] The preset duration is determined based on the service life of the composite filter element 31 (PCB filter element). Different types of composite filter elements 31 may have different service lives. When the first operating time recorded by the device exceeds the preset duration, the control system will automatically send a core replacement and cleaning signal. The core replacement and cleaning signal can be an electronic signal that triggers the indicator light on the device to flash, emit a sound prompt, or send a notification to the mobile phone, computer, or other device of the relevant personnel through a network connection.

[0079] When the usage time of the water supply equipment 1 reaches the service life of the composite filter element 31 (i.e., the PCB filter element), that is, the first operating time is greater than the preset time, the composite filter element 31 needs to be replaced, and the core replacement and cleaning operations in steps S103 and S104 are performed.

[0080] In step S103, the composite filter element 31 to be replaced is unplugged from the first plug assembly 381, and then the cleaning filter element 301 is inserted to replace the composite filter element 31, which is easy to operate.

[0081] In step S104, the main water supply path 81 and the wastewater branch 82 are controlled, and the flow path of the raw water is the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82. The wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82, so that the reverse osmosis filter element 32 can be cleaned by the cleaning filter element 301. The core 301 can generate a specific water flow or chemical reaction to remove raw water impurities attached to the reverse osmosis filter element 32, extend the service life of the reverse osmosis filter element 32, and solve the problem of raw water impurities clogging the reverse osmosis filter element 32 and slow water production due to long-term use. After the reverse osmosis filter element 32 is cleaned, the new composite filter element 31 replaces the cleaned filter element 301 and is installed in the first installation part. The cleaned reverse osmosis filter element 32 continues to be used, making full use of the remaining use value of the reverse osmosis filter element 32, saving resources, and saving the use cost of the water supply equipment 1.

[0082] In some embodiments, please combine Figure 5 and Figure 8 As shown, the cleaning method comprises the following steps:

[0083] Step S201: obtaining the first operating time of the water supply device 1;

[0084] Step S202: issuing a core replacement and cleaning signal according to the first operating time being greater than a preset time length;

[0085] Step S203: installing the cleaning filter element 301 on the first installation portion according to the core replacement cleaning signal to replace the composite filter element 31;

[0086] Step S204: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the waste water passage 387 and the waste water branch 82 to be connected in sequence, and control the water outlet section 812 and the flushing branch 83 to be disconnected;

[0087] Step S205: performing a first round of flushing on the reverse osmosis filter element for a first period of time;

[0088] Step S206: Sending a first water change signal for the second water tank 12;

[0089] Step S207: Execute step S208 according to the replacement of the raw water in the second water tank 12;

[0090] Step S208: performing a second round of flushing on the reverse osmosis filter element and continuing for a second period of time.

[0091] In this embodiment, step S201 is the same as step S101, step S202 is the same as step S102, and step S203 is the same as step S103, which will not be repeated here.

[0092] In step S204, in the process of cleaning the reverse osmosis filter element 32 with the cleaning filter element 301, in the path of flushing the reverse osmosis filter element 32 through the wastewater branch 82, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the wastewater valve 821 increases its opening, and the flow path of the raw water is, in sequence, the water inlet section 811, the first water inlet branch 383, the first plug 3811, the cleaning filter element 301, the second plug 3812, the first water outlet branch 384, the fifth plug 3821, the reverse osmosis filter element 32, the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82, and the wastewater after flushing the reverse osmosis filter element 32 is discharged through the wastewater branch 82.

[0093] In step S205 to step S208, the cleaning filter element 301 is controlled to flush the reverse osmosis filter element 32 for the first time period, that is, according to the flushing path in step S204, the self-priming pump 310 is controlled to start, and the reverse osmosis filter element 32 is flushed, and the first time period is continued. In the first round of flushing, the self-priming pump 310 is started, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the opening of the wastewater valve 821 is adjusted to the maximum value. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main road 81 to move from the second water tank 12 to the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) The chemical substance is dissolved in the raw water and flows into the reverse osmosis filter element 32 through the second plug 3812, the first water outlet branch 384 and the fifth plug 3821. The chemical substance reacts with impurities such as scale in the reverse osmosis filter element 32, so that the impurities such as scale are separated from the surface or pores of the reverse osmosis filter element 32 and converted into soluble salts, which are then washed away by the water flow through the seventh plug 3823, the waste water passage 387 and the waste water branch 82 in sequence, and finally flow back to the second water tank 12 through the waste water branch 82. After the first flushing period is continued, the first round of flushing ends.

[0094] It is conceivable that after the first round of flushing, impurities such as scale in the reverse osmosis filter element 32 are dissolved into a soluble salt solution and finally discharged into the second water tank 12. Therefore, after the first flushing period, the concentration of the soluble salt solution in the second water tank 12 gradually increases. Since the water in the second water tank 12 circulates during the flushing process, the concentration of the soluble salt solution of the raw water used to flush the reverse osmosis filter element 32 also gradually increases, which is not conducive to continuing to flush the reverse osmosis filter element 32. Therefore, after the first round of flushing is completed, the raw water in the second water tank 12 needs to be replaced.

[0095] In step S206, after the first round of flushing is completed, the first water change signal for the second water tank 12 is issued to prompt the user to change the water in the second water tank 12. The water change signal can be an electronic signal that triggers the indicator light on the device to flash, emit a sound prompt, or send a notification to the mobile phone, computer and other devices of the relevant personnel through a network connection.

[0096] In step S207, after the user completes the water change operation, the second round of flushing is performed. In this step, the control device 200 can detect whether the water change operation is completed according to the change of the water level in the second water tank 12. For example, when the water level in the second water tank 12 first drops to the lower limit value of the water level and then rises to the upper limit value of the water level, it is determined that the user has completed the water change operation in the second water tank 12, and the upper limit value of the water level is greater than the lower limit value of the water level.

[0097] In step S208, in the second round of flushing, the self-priming pump 310 is controlled to start, the reverse osmosis filter element 32 is flushed, and the second time period is continued. In the second round of flushing, the self-priming pump 310 is started, the first solenoid valve 36 and the second solenoid valve 37 are closed, and the opening of the wastewater valve 821 is adjusted to the maximum value. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main road 81 to move from the second water tank 12 to the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) and dissolves In the raw water, as the raw water flows into the reverse osmosis filter element 32 through the second plug 3812, the first water outlet branch 384 and the fifth plug 3821, the chemical substance reacts chemically with the scale and other impurities in the reverse osmosis filter element 32, so that the scale and other impurities are separated from the surface or pores of the reverse osmosis filter element 32 and converted into soluble salts, which are washed away from the wastewater outlet of the reverse osmosis filter element 32 through the seventh plug 3823, the wastewater passage 387 and the wastewater branch 82, and finally flow back to the second water tank 12 through the wastewater branch 82. After the second flushing period is continued, the second round of flushing ends.

[0098] In some embodiments, the first time period can be set to any value between 5 min and 15 min, for example, 5 min, 8 min, 10 min, 12 min, 13 min, 14 min, 15 min, etc. The second time period is set to any value between 10 min and 20 min, for example, 10 min, 12 min, 14 min, 15 min, 18 min, 19 min, 20 min, etc., and the second time period is greater than the first time period.

[0099] In an exemplary embodiment, the first time period is set to 10 minutes, and the second time period is set to 15 minutes.

[0100] In this embodiment, the first round of flushing is mainly to preliminarily remove some obvious impurities and contaminants on the surface of the reverse osmosis filter element 32. As the flushing proceeds, some stubborn stains and sediments may require longer time and stronger water flow impact to be removed. The second time period is longer than the first time period, and the second round of flushing lasts longer, which can allow the cleaning filter element 301 to have more time to more thoroughly flush the reverse osmosis filter element 32, improve the flushing effect, and ensure that the reverse osmosis filter element 32 is restored to a better filtering performance. For example, some fine particles may not be completely washed away in the first round of flushing, but in the second round of longer flushing, these particles have a greater chance of being washed away because the water flow continues to act for a longer time.

[0101] It should also be noted that after the first round of flushing, the state of the reverse osmosis filter element 32 may change. Some originally blocked pores may be partially opened, but at the same time, new impurities may enter the reverse osmosis filter element 32. The second time period is longer to better adapt to such changes and perform a more targeted flushing based on the state of the reverse osmosis filter element 32 after the first round of flushing.

[0102] In some embodiments, please combine Figure 5 and Fig. 9 As shown, the cleaning method comprises the following steps:

[0103] Step S301: obtaining the first operating time of the water supply device 1;

[0104] Step S302: issuing a core replacement and cleaning signal according to the first running time being greater than a preset time length;

[0105] Step S303: installing the cleaning filter element 301 on the first installation portion according to the core replacement cleaning signal to replace the composite filter element 31;

[0106] Step S304: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the waste water passage 387 and the waste water branch 82 to be connected in sequence, and control the water outlet section 812 and the flushing branch 83 to be disconnected;

[0107] Step S305: performing a first round of flushing on the reverse osmosis filter element and continuing the flushing for a first period of time;

[0108] Step S306: Sending a first water change signal for the second water tank 12;

[0109] Step S307: Execute step S208 according to the replacement of the raw water in the second water tank 12;

[0110] Step S308: performing a second round of flushing on the reverse osmosis filter element and continuing the flushing for a second period of time;

[0111] Step S309: Sending a second water change signal for the second water tank 12;

[0112] Step S310: Execute step S311 according to the replacement of the raw water in the second water tank 12;

[0113] Step S311: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the second water inlet branch 385, the second water outlet branch 386 and the flushing branch 83, control the wastewater branch 82 and the water outlet section 812 to be disconnected, and perform a third round of flushing on the reverse osmosis filter element and continue for a third period of time.

[0114] In this embodiment, steps S301 to S308 are the same as steps S201 to S208 and are not described in detail here.

[0115] In step S309 and step S310, after the second round of flushing is completed, a second water change signal for the second water tank 12 is issued to prompt the user to change the water for the second water tank 12. The water change signal can be an electronic signal, which triggers the indicator light on the device to flash, emits a sound prompt, or sends a notification to the mobile phone, computer and other devices of the relevant personnel through a network connection. After the user completes the water change operation, the third round of flushing is performed. In this step, the control device 200 can detect whether the water change operation is completed according to the change of the water level in the second water tank 12. For example, when the water level in the second water tank 12 first drops to the lower limit of the water level and then rises to the upper limit of the water level, it is judged that the user has completed the water change operation of the second water tank 12, and the upper limit of the water level is greater than the lower limit of the water level.

[0116] In step S311, in the third round of core replacement and cleaning, the self-priming pump 310 is started, the first solenoid valve 36 is closed, the opening of the waste water valve 821 is adjusted to the minimum value, and the second solenoid valve 37 is opened. Specifically, after starting the self-priming pump 310, the self-priming pump 310 drives the water of the water inlet section 811 of the water production main road 81 to move from the second water tank 12 to the first water inlet main road. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the cleaning filter element 301 through the first water inlet branch 383 and the first plug 3811 in turn. When the raw water passes through the cleaning filter element 301, the cleaning filter element 301 precipitates chemical substances (such as acidic substances and oxidants, etc.) and dissolves in the raw water, and flows with the raw water through the second plug 3812, The first water outlet branch 384 and the fifth plug 3821 flow into the reverse osmosis filter element 32, and the chemical substance reacts chemically with the scale and other impurities in the reverse osmosis filter element 32, so that the scale and other impurities are separated from the surface or pores of the reverse osmosis filter element 32 and converted into soluble salts, and then flow from the pure water outlet of the reverse osmosis filter element 32 through the sixth plug 3822, the second water inlet branch 385, the third plug 3813, the cleaning filter element 301, the fourth plug 3814, the second water outlet branch 386, the flushing branch 83, and finally flow back to the second water tank 12 through the flushing branch 83. After the third flushing period is continued, the third round of flushing ends. The third period is equal to the second period.

[0117] In this embodiment, the reverse osmosis filter element 32 is rinsed from the wastewater outlet and the pure water outlet of the reverse osmosis filter element 32 through the first, second and third rounds of rinsing, respectively, to ensure that the water flow can reach different parts of the reverse osmosis filter element 32, including some hard-to-reach corners and pores. In this way, impurities attached to the filter element can be removed more comprehensively, and the thoroughness of cleaning can be improved. Water flows in different paths can produce different flushing directions and strengths, forming multi-angle impacts on impurities, thereby being able to more comprehensively remove impurities attached to the reverse osmosis filter element 32 and improving the thoroughness of cleaning.

[0118] In some embodiments, please combine Figure 5 and Fig.10 As shown, after completing the third round of rinsing, the cleaning method further includes the following steps:

[0119] Step S401: Install a new composite filter element 31 on the first installation portion to replace the clean filter element 301;

[0120] Step S402: Control the water inlet section 811, the first water inlet branch 383, the first water outlet branch 384, the second water inlet branch 385, the second water outlet branch 386, the flushing branch 83 and the wastewater branch 82, control the water outlet section 812 to be disconnected, and flush the composite filter element 31 and the reverse osmosis filter element 32 for the fourth time period.

[0121] In step S401, the cleaning filter element 301 is unplugged from the first plug assembly 381, and then a new composite filter element 31 is inserted to replace the cleaning filter element 301, which is easy to operate.

[0122] In step S402, after the water supply device 1 completes the core replacement and flushing and replaces the new composite filter element 31, it is necessary to perform a self-cleaning operation on the composite filter element 31. Among them, the self-priming pump 310 is started, the first solenoid valve 36 is closed, the opening of the wastewater valve 821 is adjusted to the maximum value, and the second solenoid valve 37 is opened.

[0123] Specifically, after the self-priming pump 310 is started, the self-priming pump 310 drives the water in the water inlet section 811 of the water production main path 81 to move from the second water tank 12 to the first water inlet main path. The raw water in the second water tank 12 is sucked into the water inlet section 811 under the driving action of the self-priming pump 310, and flows into the pre-filter element through the first water inlet branch 383 and the first plug 3811 in sequence. When the raw water passes through the pre-filter element, the raw water washes away the protective liquid and tiny particles, debris such as carbon powder and other impurities in the pre-filter element, and flows with the raw water through the second plug 3812, the first water outlet branch 384 and the fifth plug 3821 to the reverse osmosis filter element 32. The raw water carrying impurities is discharged into the pre-filter element 32. The reverse osmosis filter element 32 is divided into two paths. One path of raw water carries a large amount of impurities and is flushed away through the wastewater outlet of the reverse osmosis filter element 32 via the seventh plug 3823, the wastewater passage 387, and the wastewater branch 82, and finally flows back to the second water tank 12 through the wastewater branch 82. The other path of raw water is filtered by the reverse osmosis filter element 32, and then flows from the pure water outlet of the reverse osmosis filter element 32 through the sixth plug 3822, the second water inlet branch 385, and the third plug 3813 to the post-filter element, and flushes the post-filter element. After flushing away impurities such as carbon powder in the post-filter element, it flows back to the second water tank 12 through the fourth plug 3814, the second water outlet branch 386, and the flushing branch 83.

[0124] In this embodiment, flushing the new composite filter element 31 can effectively remove impurities brought by the composite filter element 31 during the manufacturing and storage process, ensuring that the equipment composite filter element 31 can provide clean and safe drinking water after being put into use.

[0125] In some embodiments, please combine Figure 5 and Figure 6As shown, the water supply equipment 1 also includes a control device 200, which is electrically connected to the self-priming pump 310, the first TDS probe 391, the second TDS probe 392, the wastewater valve 821, the first solenoid valve 36 and the second solenoid valve 37. Specifically, in the operation of the first round of core replacement and cleaning, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 and the second solenoid valve 37 to close, and the opening of the wastewater valve 821 is opened to the maximum value, and lasts for the first time period. In the operation of the second round of core replacement and cleaning, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 and the second solenoid valve 37 to close, and the opening of the wastewater valve 821 to the maximum value, and lasts for the second time period. In the operation of the third round of core replacement and cleaning, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 to close, the second solenoid valve 37 to open, and the opening of the wastewater valve 821 to the minimum value, and lasts for the third time period. After the new composite filter element 31 is replaced, the control device 200 controls the self-priming pump 310 to start, the first solenoid valve 36 to close, the second solenoid valve 37 to open, and the wastewater valve 821 to open to the maximum value, and continues for the fourth time period.

[0126] In this embodiment, the control device 200 includes a memory 2002 and at least one processor 2001, wherein the memory 2002 stores programs or instructions that can be executed on the processor 2001, and when the processor 2001 executes the program or instruction, the steps of the cleaning method of the water supply equipment 1 in this application are implemented.

[0127] According to an embodiment of the present invention, a computer storage medium is also provided, on which computer readable instructions are stored, and when the computer readable instructions are executed by one or more processors, the one or more processors execute the cleaning method of the water supply equipment in any embodiment of the present invention. The cleaning method may include but is not limited to at least one of the following steps: obtaining the first operating time of the water supply equipment; issuing a core replacement cleaning signal according to the first operating time being greater than a preset time; installing the cleaning filter element on the first installation part according to the core replacement cleaning signal to replace the composite filter element; controlling the water main circuit and the wastewater branch circuit to flush the reverse osmosis filter element.

[0128] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable storage medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, apparatus, or device and execute instructions), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, a "computer-readable storage medium" may be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples of computer-readable storage media (a non-exhaustive list) include the following: an electrical connection with one or more wirings (electronic devices), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory, or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM, Compact Disc Read-Only Memory). In addition, the computer-readable storage medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0129] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA, Programmable Gate Array), a field programmable gate array (FPGA, Field Programmable Gate Array), etc.

[0130] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A water supply device, characterized in that: The water supply equipment includes a main water production line, a wastewater branch, a composite filter element, a cleaning filter element and a reverse osmosis filter element. Along the flow direction of raw water, the water supply equipment also includes a first installation part and a second installation part which are sequentially arranged on the main water production line. One of the composite filter element and the cleaning filter element is installed on the first installation part, and the reverse osmosis filter element is installed on the second installation part. The water inlet of the wastewater branch is connected to the wastewater outlet of the reverse osmosis filter element.

2. The water supply equipment according to claim 1, characterized in that: The water supply device further comprises a water channel adapter plate, wherein a plurality of mutually blocked water channels are provided inside the water channel adapter plate, the first mounting portion is configured as a first plug group provided on the water channel adapter plate and in communication with the water channels, the second mounting portion is configured as a second plug group provided on the water channel adapter plate and in communication with the water channels, one of the composite filter element and the cleaning filter element is detachably plugged into the first plug group, and the reverse osmosis filter element is detachably plugged into the second plug group; The main water production path includes a water inlet section and a water outlet section, and the water inlet section is connected to the water outlet section through the water path adapter plate.

3. The water supply equipment according to claim 2, characterized in that: The plurality of water channels include a first water inlet branch, a first water outlet branch, a second water inlet branch and a second water outlet branch; When the cleaning filter element is installed in the first installation position, the cleaning filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch. The cleaning filter element is also connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

4. The water supply equipment according to claim 3, characterized in that: The composite filter element includes a pre-filter element and a post-filter element. When the composite filter element is installed in the first installation position, the pre-filter element is connected to the water inlet section through the first water inlet branch, and is connected to the reverse osmosis filter element through the first water outlet branch, and the post-filter element is connected to the reverse osmosis filter element through the second water inlet branch, and is connected to the water outlet section through the second water outlet branch.

5. The water supply equipment according to claim 3 or 4, characterized in that: The water supply equipment further comprises a flushing branch, a water inlet of the flushing branch being in communication with a water outlet of the second water outlet branch.

6. The water supply equipment according to claim 5, characterized in that: The water supply equipment also includes: a first one-way valve, provided in the second water inlet branch, the first one-way valve being unidirectional in a direction from the reverse osmosis filter element to a water outlet end of the second water inlet branch; A second one-way valve is provided in the flushing branch, and the second one-way valve is unidirectionally conductive in a direction from the second water outlet branch to the water outlet end of the flushing branch.

7. The water supply equipment according to claim 5, characterized in that: The water supply equipment also includes: A first solenoid valve, disposed at the water outlet section; A second solenoid valve is provided in the flushing branch; The wastewater valve is arranged on the wastewater branch.

8. The water supply equipment according to claim 5, characterized in that: The water supply equipment also includes: A first TDS probe and a second TDS probe, wherein the first TDS probe is arranged at the first water inlet branch, and the second TDS probe is arranged at the second water outlet branch.

9. The water supply equipment according to claim 5, characterized in that: The water supply equipment also includes: a first water tank, the first water tank being connected to the water outlet of the water outlet section, a second water tank, the second water tank being respectively connected to the water inlet of the water inlet section, the water outlet of the wastewater branch and the water outlet of the flushing branch; A self-priming pump is provided in the water inlet section and is used to drive the water in the water inlet section to flow from the water inlet of the water inlet section to the first water inlet branch.

10. The water supply equipment according to claim 3, characterized in that: The water channel comprises a wastewater channel, and the reverse osmosis filter element is connected with the wastewater branch channel through the wastewater channel.

11. A method for cleaning a water supply device, the method being used for the water supply device according to any one of claims 1 to 10, characterized in that: The cleaning method comprises: Obtaining a first operating time of the water supply equipment; Sending a core replacement and cleaning signal according to the first running time being greater than a preset time; Installing the cleaning filter element on the first installation portion according to the element replacement and cleaning signal to replace the composite filter element; The water production main path and the wastewater branch path are controlled to flush the reverse osmosis filter element.

12. The method for cleaning water supply equipment according to claim 11, characterized in that: The step of controlling the water supply main passage and the wastewater branch passage comprises: controlling the water inlet section, the first water inlet branch, the first water outlet branch, the wastewater passage and the wastewater branch to be connected in sequence, and controlling the water outlet section and the flushing branch to be disconnected; The step of flushing the reverse osmosis filter element comprises: Performing a first round of flushing on the reverse osmosis filter element for a first period of time; Performing a second round of flushing on the reverse osmosis filter element for a second period of time; The second time period is greater than the first time period.

13. The method for cleaning water supply equipment according to claim 12, characterized in that: The method further includes between the first round of flushing and the second round of flushing: Send out the first signal for changing water in the second water tank; The step of starting the second round of flushing according to the replacement of raw water in the second water tank.

14. The method for cleaning water supply equipment according to claim 12, characterized in that: After the second round of flushing, the cleaning method further comprises: The water inlet section, the first water inlet branch, the first water outlet branch, the second water inlet branch, the second water outlet branch and the flushing branch are controlled to be connected in sequence, the wastewater branch and the water outlet section are controlled to be disconnected, and the reverse osmosis filter element is flushed for a third round for a third period of time.

15. The method for cleaning water supply equipment according to claim 14, characterized in that: Before the third round of flushing, the method further includes: Sending a second signal to change the water in the second water tank; The step of starting the third round of flushing according to the replacement of raw water in the second water tank.

16. The method for cleaning water supply equipment according to claim 14, characterized in that: After completing the third round of flushing, the cleaning method further comprises: Installing a new composite filter element on the first installation portion to replace the cleaning filter element; The water inlet section, the first water inlet branch, the first water outlet branch, the second water inlet branch, the second water outlet branch, the flushing branch and the wastewater branch are controlled to be connected in sequence, the water outlet section is controlled to be disconnected, and the composite filter element and the reverse osmosis filter element are flushed for a fourth time period.

17. A computer storage medium, characterized in that: The computer storage medium stores computer-readable instructions, and when the computer-readable instructions are read by one or more processors, the one or more processors execute the water supply equipment cleaning method according to any one of claims 11 to 16.

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