Water purifier and bubble flushing device thereof

Abstract

The invention provides a water purifier and a bubble flushing device thereof, the water purifier comprises a water tank, and the bubble flushing device comprises: an air pump for extracting air from an air storage module and inputting the air into a water-air mixing module; the first pressure detection module is used for detecting a first pressure value of gas output by the gas storage module; the second pressure detection module is used for detecting a second pressure value of the gas input into the water-gas mixing module; the control unit is used for adjusting the current opening degree of the gas storage module according to the first pressure value, so that the second pressure value is within a preset range; the water-gas mixing module is used for mixing input gas with water to form bubble water and inputting the bubble water to the bubble water inlet so as to flush the water tank. According to the water purifier, the two pressure detection modules are arranged, so that the pressure value of the bubble water input into the water tank of the water purifier is stable, then the water tank can be flushed to kill bacterial colonies in the water tank, the safety and sanitation of water used by a user are guaranteed, the body health of the user is guaranteed, and the experience feeling of the user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of smart home appliances, and in particular to a water purifier and a bubble flushing device thereof. Background Art

[0002] Currently, water purifiers with water tanks only sterilize by long-term irradiation with UV (Ultra-Violet Ray) lamps. However, this method cannot completely kill the bacteria in the water tank, and cannot ensure the safety and hygiene of the user's water. It poses a hidden danger to the user's health and reduces the user's water experience. Summary of the invention

[0003] The technical problem to be solved by the present disclosure is to overcome the defects in the prior art of sterilizing the water tank of the water purifier by only irradiating it with UV lamp for a long time, which fails to completely kill the bacteria in the water tank, resulting in failure to ensure the safety and hygiene of the user's water, brings hidden dangers to the user's health, and reduces the user's water experience. A water purifier and its bubble flushing device are provided.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present disclosure provides a bubble flushing device for a water purifier, the water purifier comprising a water tank, the bubble flushing device comprising a first pressure detection module, a second pressure detection module, a control unit, and an air storage module, an air pump and a water-gas mixing module connected in sequence;

[0006] The first pressure detection module is arranged between the gas storage module and the air pump, and the second pressure detection module is arranged between the air pump and the water-gas mixing module;

[0007] The water-gas mixing module is in communication with the bubble water inlet of the water tank;

[0008] The control unit is electrically connected to the first pressure detection module and the second pressure detection module respectively;

[0009] The air pump is used to extract gas from the gas storage module and input it into the water-gas mixing module;

[0010] The first pressure detection module is used to detect a first pressure value of the gas output by the gas storage module;

[0011] The second pressure detection module is used to detect a second pressure value of the gas input into the water-gas mixing module;

[0012] The control unit is used to adjust the current opening of the gas storage module according to the first pressure value so that the second pressure value is within a preset range;

[0013] The water-gas mixing module is used to mix the input gas with water to form bubble water and input the bubble water into the bubble water inlet to flush the water tank.

[0014] Preferably, the control unit is also used to adopt a PID (Proportion Integral Differential) algorithm to obtain an adjustment opening of the gas storage module according to the first pressure value, and adjust the current opening of the gas storage module according to the adjustment opening until the second pressure value is within the preset range.

[0015] Preferably, the control unit is further configured to use a PID algorithm to obtain a calculation formula corresponding to the adjustment opening of the gas storage module according to the first pressure value as follows:

[0016] △U=a*(P0–P1)+b*P0+c*(P0–d*P1+P2);

[0017] Among them, the △U is used to characterize the adjustment opening of the gas storage module, P0 is used to characterize the first difference value between the current first pressure value of the gas output by the gas storage module and the preset pressure value, P1 is used to characterize the second difference value between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, P2 is used to characterize the third difference value between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, and a, b, c and d are all constants.

[0018] The present disclosure also provides a water purifier, which includes the bubble flushing device of the water purifier as described above.

[0019] Preferably, the water purifier comprises a first filter module;

[0020] The first filter module is communicated with the water source and the water-gas mixing module respectively;

[0021] The first filtering module is used to filter the incoming water source and output the filtered water to the water-gas mixing module.

[0022] Preferably, the water purifier further comprises a second filter module;

[0023] The second filter module comprises a filter element, an interlayer and a housing;

[0024] The filter element is arranged in the interlayer, and the interlayer is arranged in the shell;

[0025] The housing comprises a clean water inlet and a waste water inlet;

[0026] The clean water inlet is communicated with the first filter module, and the waste water inlet is communicated with the waste water outlet of the water tank; wherein the waste water outlet is used to discharge the bubble water after flushing the water tank;

[0027] The clean water inlet is used to input the water filtered by the first filter module into the filter element for filtering;

[0028] The wastewater inlet is used to discharge the bubble water discharged from the wastewater outlet through between the interlayer and the shell.

[0029] Preferably, the water purifier further comprises a first water quality detection module, a second water quality detection module, an adjustable wastewater ratio solenoid valve and a control module;

[0030] The first water quality detection module is arranged on a first side of the second filter module close to the first filter module, and the second water quality detection module is arranged on a second side of the second filter module away from the first filter module;

[0031] The first water quality detection module is used to detect the first mineral content of the water filtered by the first filtering module;

[0032] The second water quality detection module is used to detect the second mineral content of the water filtered by the second filtering module;

[0033] The control module is used to adjust the adjustable wastewater ratio solenoid valve according to the first mineral content so that the second mineral content is within a preset range.

[0034] Preferably, the water purifier further comprises a colony detection module and a sterilization module disposed in the water tank;

[0035] The colony detection module is used to detect the colony value in the water tank;

[0036] The control module is also used to drive the sterilization module and / or the bubble flushing device to sterilize the water tank according to the colony value.

[0037] Preferably, the sterilization module includes a UV sterilization component.

[0038] Preferably, the water purifier further comprises a weight detection module and a timing module;

[0039] The weight detection module is used to detect the amount of water in the water tank;

[0040] The timing module is used to detect the storage time of water in the water tank;

[0041] The control module is also used to drive the sterilization module and / or the bubble flushing device to sterilize the water tank according to the water volume and / or the storage time.

[0042] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0043] The positive and progressive effects of this disclosure are:

[0044] The present invention provides two pressure detection modules to stabilize the pressure value of the bubble water input into the water tank of the water purifier, so that the water tank can be flushed to kill the bacteria in the water tank, thereby ensuring the safety and hygiene of the user's water, protecting the user's health, and improving the user's water experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a module schematic diagram of the bubble flushing device of the water purifier of Example 1 of the present disclosure.

[0046] Figure 2 This is a schematic structural diagram of the bubble flushing device of the water purifier according to Embodiment 4 of the present disclosure.

[0047] Figure 3 This is a schematic diagram of the structure of the second filter module in the bubble flushing device of the water purifier of Example 4 of the present disclosure. DETAILED DESCRIPTION

[0048] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0049] Prefixes such as "first" and "second" are used in the embodiments of the present disclosure only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers to distinguish description objects in the embodiments of the present disclosure does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitation should be constituted due to the use of such prefixes. In addition, in the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0050] In the embodiments of the present disclosure, the collection, storage, use, processing, transmission, provision and disclosure of user personal information involved are in compliance with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0051] Example 1

[0052] This embodiment provides a bubble flushing device for a water purifier, the water purifier includes a water tank, such as Figure 1As shown, the bubble flushing device includes a first pressure detection module 11, a second pressure detection module 12, a control unit 13, and an air storage module 14, an air pump 15 and a water-gas mixing module 16 which are connected in sequence;

[0053] The first pressure detection module 11 is disposed between the gas storage module 14 and the air pump 15, and the second pressure detection module 12 is disposed between the air pump 15 and the water-gas mixing module 16;

[0054] The water-gas mixing module 16 is in communication with the bubble water inlet of the water tank;

[0055] The control unit 13 is electrically connected to the first pressure detection module 11 and the second pressure detection module 12 respectively;

[0056] The air pump 15 is used to extract gas from the gas storage module 14 and input it into the water-gas mixing module 16;

[0057] The first pressure detection module 11 is used to detect a first pressure value of the gas output by the gas storage module 14;

[0058] The second pressure detection module 12 is used to detect the second pressure value of the gas input into the water-gas mixing module 16;

[0059] The control unit 13 is used to adjust the current opening of the gas storage module 14 according to the first pressure value so that the second pressure value is within a preset range;

[0060] The water-gas mixing module 16 is used to mix the input gas with water to form bubble water and input the bubble water to the bubble water inlet to flush the water tank.

[0061] Specifically, the air is stored in a gas storage module, such as a gas cylinder. The mouth of the gas cylinder is connected to the inlet of the vacuum pump, and the outlet of the vacuum pump is connected to the water-gas mixing module; the two inlets of the water-gas mixing module are respectively connected to the outlets of the filter element of the gas cylinder and the water purifier, and the outlet of the water-gas mixing module is connected to the bubble water inlet of the water tank. A first pressure detection module and a second pressure detection module are arranged before and after the vacuum pump. The two pressure detection modules are, for example, pressure detectors. The two pressure detectors can detect the pressure value of the gas in the pipeline in real time, and adjust the opening of the gas cylinder by comparing the first pressure value with the preset pressure value to ensure that the second pressure value of the bubble water can remain stable. Compared with ordinary purified water flushing, bubble water can generate stronger impact force during the bubble bursting process. A bubble flushing device is provided for flushing the water tank to keep the inside of the water tank clean.

[0062] The control unit may be an independent controller in the water purifier, or may also serve as a main controller in the water purifier, and the specific design may be based on actual conditions.

[0063] In this embodiment, two pressure detection modules are provided to stabilize the pressure value of the bubble water input into the water tank of the water purifier, so that the water tank can be flushed to kill the bacteria in the water tank, thereby ensuring the safety and hygiene of the user's water, protecting the user's health, and improving the user's water experience.

[0064] Example 2

[0065] This embodiment provides a bubble flushing device for a water purifier, which is a further improvement on the first embodiment.

[0066] In an implementable solution, the control unit 13 is further used to use a PID algorithm to obtain an adjustment opening of the gas storage module 14 according to the first pressure value, and adjust the current opening of the gas storage module 14 according to the adjustment opening until the second pressure value is within a preset range.

[0067] The control unit 13 uses the PID algorithm to obtain the calculation formula corresponding to the adjustment opening of the gas storage module 14 according to the first pressure value as follows:

[0068] △U=a*(P0–P1)+b*P0+c*(P0–d*P1+P2);

[0069] Among them, △U is used to characterize the adjustment opening of the gas storage module, P0 is used to characterize the first difference between the current first pressure value of the gas output by the gas storage module and the preset pressure value, P1 is used to characterize the second difference between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, P2 is used to characterize the third difference between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, a, b, c and d are all constants; the values ​​of the four constants a, b, c and d can be obtained through experience and experiments, d can be 2, which is just an example, and other values ​​can also be taken. The calculated △U can specifically be the change value of the gas flux in the gas cylinder, and the adjustment opening of the gas storage module can be obtained through the calibration table.

[0070] Specifically, open the gas storage module, such as the gas cylinder mouth of the gas cylinder, detect the first pressure value inside the gas cylinder through the first pressure detection module, and determine the air intake state of the water-gas mixing module after comparing with the preset pressure value, adjust the gas cylinder opening based on the algorithm, and associate the adjustable gas cylinder opening with the air content to adjust the gas content in the bubble water, and determine whether the second pressure value meets the standard and is stable through the second pressure detection module to achieve the control of the air intake.

[0071] The process of air intake control is as follows:

[0072] Determine the preset pressure value Pset according to the air intake demand and adjust the cylinder opening to the minimum α;

[0073] Open the gas cylinder and detect the pressure value P0 at the cylinder port;

[0074] Determine whether P0 is greater than Pset;

[0075] If P0 is greater than Pset, the cylinder opening is adjusted using the incremental PID algorithm using the formula △U = a*(P0–P1)+b*P0+c*(P0–d*P1+P2);

[0076] If P0 is not greater than Pset, the data P0 is stored as reference data for subsequent intake air volume control;

[0077] Obtaining a second pressure value through a second pressure detection module, and determining whether the second pressure value P3 is stable and consistent with a preset pressure value Pset;

[0078] If yes, the data P3 is stored as reference data for the next intake air volume control;

[0079] If not, return to the step where P0 is greater than Pset.

[0080] In this solution, the opening of the gas cylinder is adjusted based on the PID algorithm to ensure the precise control of the air intake of the water-gas mixing module, ensure the stability of the pressure value of the bubble water in the water tank of the water purifier, and improve the reliability and effectiveness of flushing the water tank with bubble water.

[0081] In this embodiment, two pressure detection modules are provided to stabilize the pressure value of the bubble water input into the water tank of the water purifier, so that the water tank can be flushed to kill the bacteria in the water tank, thereby ensuring the safety and hygiene of the user's water, protecting the user's health, and improving the user's water experience.

[0082] Example 3

[0083] This embodiment provides a water purifier, which includes the bubble flushing device 1 of the water purifier of embodiment 1 or embodiment 2.

[0084] In this embodiment, by providing a bubble flushing device, reliable flushing of the water tank is achieved, the cleanliness of the inside of the water tank is maintained, the colony value in the water tank is reduced, the safety and hygiene of the user's water is ensured, and the intelligence level and product performance of the water purifier are improved.

[0085] Example 4

[0086] This embodiment provides a water purifier, which is a further improvement on Embodiment 3.

[0087] In one feasible solution, Figure 2 As shown, the water purifier includes a first filter module 21;

[0088] The first filter module 21 is communicated with the water inlet source and the water-gas mixing module 16 respectively;

[0089] The first filtering module 21 is used to filter the incoming water source and output the filtered water to the water-gas mixing module 16 .

[0090] Specifically, the first filter module 21 includes a pre-filter element and a post-filter element. The water inlet of the pre-filter element is connected to the water source, such as tap water, through the water inlet electric valve 22, and the water outlet is connected to the boost pump 23; the water inlet of the boost pump 23 is respectively connected to the pre-filter element and the reflux flushing water circuit; the reflux flushing water circuit includes an electromagnetic valve 24; the water outlet of the post-filter element is respectively connected to the water tank 25, the direct water outlet 26 and the water-gas mixing module 16; the water stored in the water tank 25 realizes a large flow of water outflow, and the clean water flows out from the water tank outlet 28 through the DC pump 27; when the water in the water tank 25 is exhausted, a small flow of water is realized through the direct water outlet 26; a solenoid valve 24 is respectively set between the water outlet of the post-filter element and the water tank 25, the direct water outlet 26, and the water-gas mixing module 16 as a check valve to prevent the water that has been in contact with the air at the water outlet of the post-filter element from flowing back into the water circuit, thereby reducing the possibility of pollution.

[0091] In this solution, filtered water is input into the water-gas mixing module through the first filtering module, thereby ensuring the cleanliness and hygiene of the bubble water input into the water tank of the water purifier and guaranteeing the reliability and effectiveness of flushing the water tank with bubble water.

[0092] In an practicable solution, the water purifier further includes a second filter module 29;

[0093] like Figure 3 As shown, the second filter module 29 includes a filter element 291, an interlayer 292 and a housing 293;

[0094] The filter element 291 is disposed in the interlayer 292, and the interlayer 292 is disposed in the housing 293;

[0095] The housing 293 includes a clean water inlet 2931 and a waste water inlet 2932;

[0096] The clean water inlet 2931 is in communication with the first filter module 21, and the waste water inlet 2932 is in communication with the waste water outlet 251 of the water tank 25; wherein the waste water outlet 251 is used to discharge the bubble water after flushing the water tank 25;

[0097] The clean water inlet 2931 is used to input the water filtered by the first filter module 21 into the filter element 291 for filtering;

[0098] The wastewater inlet 2932 is used to discharge the bubble water discharged from the wastewater outlet 251 through the space between the interlayer 292 and the shell 293 .

[0099] Specifically, the second filter module may use a NSP (nanochromatography) filter element, and the water outlet of the booster pump is connected to the NSP filter element;

[0100] In addition, the housing 293 further includes a wastewater outlet 2933 and a clean water outlet 2934, which are respectively used to discharge the wastewater and clean water filtered by the filter element.

[0101] In this solution, an interlayer is provided between the outer shell of the second filter module and the filter element so that the bubble water after flushing the water tank does not pass through the filter element, that is, is separated from the filter element, thereby reducing the influence of the bubble water discharged from the water tank on the cleanliness of the filter element.

[0102] In an implementable solution, the water purifier further includes a first water quality detection module 30, a second water quality detection module 31, an adjustable wastewater ratio solenoid valve 32 and a control module 33;

[0103] The first water quality detection module 30 is disposed on a first side of the second filter module 29 close to the first filter module 21 , and the second water quality detection module 31 is disposed on a second side of the second filter module 29 away from the first filter module 21 ;

[0104] The first water quality detection module 30 is used to detect the first mineral content of the water filtered by the first filtering module 21;

[0105] The second water quality detection module 31 is used to detect the second mineral content of the water filtered by the second filtering module 29;

[0106] The control module 33 is used to adjust the adjustable wastewater ratio solenoid valve 32 according to the first mineral content so that the second mineral content is within a preset range.

[0107] Specifically, the control module is electrically connected to the first water quality detection module and the second water quality detection module respectively. The water outlet of the booster pump is connected to the second filter module, and the first water quality detection module is arranged at the connection, and the first water quality detection module can monitor the mineral content of the incoming water in real time; one of the outlets of the second filter module is connected to the adjustable wastewater ratio solenoid valve for adjusting the wastewater flux, and the other outlet is connected to the post-filter element, and the second water quality detection module is arranged at the connection, and the second water quality detection module can monitor the mineral content of the water filtered by the second filter module in real time, turn on the booster pump, and determine the opening state of the adjustable wastewater ratio solenoid valve after comparing the first mineral content of the incoming water detected by the first water quality detection module with the preset mineral content, adjust the adjustable wastewater ratio flux based on the algorithm, and associate the opening of the adjustable wastewater ratio solenoid valve with the mineral content, so as to adjust the second mineral content of the water filtered by the second filter module, and judge whether the second mineral content is up to standard and stable through the second water quality detection module, so as to realize the regulation and control of the mineral content of the incoming water.

[0108] Among them, the control module can be a main controller in the water purifier, including a control unit in the bubble flushing device of the water purifier, and can be specifically designed according to actual conditions.

[0109] The control module is used to obtain the adjustment opening of the adjustable wastewater ratio solenoid valve according to the first mineral content by using a PID algorithm, and adjust the current opening of the adjustable wastewater ratio solenoid valve according to the adjustment opening until the second mineral content is within a preset range;

[0110] The control module uses the PID algorithm to obtain the calculation formula corresponding to the adjustment opening of the adjustable wastewater ratio solenoid valve according to the first mineral content as follows:

[0111] △V=e*(Q0–Q1)+f*Q0+g*(Q0–h*Q1+Q2);

[0112] Among them, △V is used to characterize the adjustment opening of the adjustable wastewater ratio solenoid valve, Q0 is used to characterize the first content difference between the current first mineral content detected by the first water quality detection module and the preset mineral content, Q1 is used to characterize the second mineral content of the filtered water detected by the second filtration module last time and the second content difference between the preset mineral content, Q2 is used to characterize the second mineral content of the filtered water detected by the second filtration module last time and the third content difference between the preset mineral content, e, f, g and h are all constants; the values ​​of the four constants e, f, g and h can be obtained through experience and experiments, h can be 2, which is just an example, and other values ​​can also be taken. The calculated △V can specifically be the change value of the adjustable wastewater ratio flux, and the adjustment opening of the adjustable wastewater ratio solenoid valve can be obtained through the calibration table.

[0113] The process of mineral content control is as follows:

[0114] Determine the preset mineral content Qset according to the mineral demand, and adjust the opening of the adjustable wastewater ratio solenoid valve to the minimum β;

[0115] Turn on the booster pump and test the first mineral content Q0 of the purified water;

[0116] Determine whether Q0 is greater than Qset;

[0117] If Q0 is greater than Qset, the opening of the adjustable wastewater ratio solenoid valve is adjusted by the incremental PID algorithm using the formula △V = e*(Q0–Q1)+f*Q0+g*(Q0–h*Q1+Q2);

[0118] If Q0 is not greater than Qset, the data Q0 is stored as reference data for subsequent control of the mineral content of the incoming water;

[0119] Obtaining the second mineral content through the second water quality detection module, and determining whether the second mineral content Q3 is stable and consistent with the preset mineral content Qset;

[0120] If yes, the data Q3 is stored as reference data for the next water mineral content control;

[0121] If not, return to the step where Q0 is greater than Qset.

[0122] In this solution, the opening of the adjustable wastewater ratio solenoid valve is adjusted based on the PID algorithm, which ensures the precise regulation and control of the mineral content of the water after filtering by the NSP filter element, ensures the stability of the mineral content of the inlet water of the water purifier, improves the water quality, and improves the reliability and effectiveness of the NSP filter element in filtering the inlet water source.

[0123] In an practicable solution, the water purifier further includes a colony detection module 34 and a sterilization module 35 disposed in the water tank 25;

[0124] The colony detection module 34 is used to detect the colony value in the water tank 25;

[0125] The control module 33 is also used to drive the sterilization module 35 and / or the bubble flushing device 1 to sterilize the water tank 25 according to the colony value.

[0126] Specifically, the colony detection module and the sterilization module are electrically connected to the control module respectively, the colony detection module includes a colony detector, and the sterilization module includes a UV sterilization component. The first colony threshold and the second colony threshold that are the highest acceptable in the water tank are set, and the second colony threshold is greater than the first colony threshold. When the actual colony value detected by the colony detector is greater than the first colony threshold, the UV lamp component is turned on for irradiation until the actual colony value of the water tank returns to a normal level; when the actual colony value detected by the colony detector is higher than the second colony threshold, the solenoid valve is turned on to drain the water in the water tank, the UV lamp component is turned on for sterilization, and it is turned on for a specified time and then turned off, and then the water channel is flushed with a bubble flushing device to ensure that the colony value in the water channel is within the control range.

[0127] In this solution, a colony detection module is set to detect the colony value in the water tank, so that the control module drives the sterilization module and the bubble flushing device to sterilize the water tank according to the colony value, ensuring that the colonies in the water tank and the water channel are within the preset range, ensuring the cleanliness of the water tank and the water channel.

[0128] In an practicable solution, the water purifier further includes a weight detection module 36 and a timing module 37;

[0129] The weight detection module 36 is used to detect the amount of water in the water tank 25;

[0130] The timing module 37 is used to detect the storage time of water in the water tank 25;

[0131] The control module 33 is also used to drive the sterilization module 35 and / or the bubble flushing device 1 to sterilize the water tank 25 according to the water volume and / or storage time.

[0132] Specifically, the weight detection module and the timing module are electrically connected to the control module respectively, the weight detection module includes a gravity detector, the gravity detector is arranged at the bottom of the water tank, and the timing module includes a timer. The storage time H of the maximum acceptable specified weight water W in the water tank is set; when the water volume W in the water tank is less than or equal to half of the capacity of the water tank, and the timer counts 12h<=H<=24h, the UV lamp assembly is turned on for irradiation; when the water volume W in the water tank is greater than half of the capacity of the water tank, and the timer counts 12h<=H<=24h, the solenoid valve is turned on to drain the water in the water tank from the reflux waterway, re-filter, and then turn on the UV lamp for irradiation to ensure that the colony value in the waterway is within the control range; when H>48h, the water volume in the water tank is no longer judged, and the bubble flushing device is directly turned on to generate bubble water, and the water tank is strongly flushed by using the bubble blasting force, and then the UV lamp is turned on for sterilization. After flushing with bubble water, the wastewater is discharged separately from the flushing wastewater drainage channel. The 12h, 24h, and 48h here are just examples and can be set or adjusted according to actual needs.

[0133] In this solution, a weight detection module is set up to detect the amount of water in the water tank, and a timing module is set to detect the storage time of the water in the water tank. The control module drives the sterilization module and the bubble flushing device to sterilize the water tank according to the water amount and storage time, thereby ensuring that the colonies in the water tank and the water channel are within the preset range and the cleanliness of the water tank and the water channel is ensured.

[0134] In this embodiment, by providing a bubble flushing device, a filtration module, a water quality detection module, a colony detection module, a weight detection module and a timing module, reliable filtration, flushing and sterilization of the water tank are achieved, the cleanliness of the inside of the water tank is maintained, the colony value in the water tank and the water is reduced, the safety and hygiene of the user's water is ensured, and the intelligence level and product performance of the water purifier are improved.

[0135] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A bubble flushing device for a water purifier, characterized in that: The water purifier comprises a water tank, and the bubble flushing device comprises a first pressure detection module, a second pressure detection module, a control unit, and an air storage module, an air pump and a water-gas mixing module which are connected in sequence; The first pressure detection module is arranged between the gas storage module and the air pump, and the second pressure detection module is arranged between the air pump and the water-gas mixing module; The water-gas mixing module is in communication with the bubble water inlet of the water tank; The control unit is electrically connected to the first pressure detection module and the second pressure detection module respectively; The air pump is used to extract gas from the gas storage module and input it into the water-gas mixing module; The first pressure detection module is used to detect a first pressure value of the gas output by the gas storage module; The second pressure detection module is used to detect a second pressure value of the gas input into the water-gas mixing module; The control unit is used to adjust the current opening of the gas storage module according to the first pressure value so that the second pressure value is within a preset range; The water-gas mixing module is used to mix the input gas with water to form bubble water and input the bubble water into the bubble water inlet to flush the water tank.

2. The bubble flushing device for a water purifier according to claim 1, characterized in that: The control unit is also used to use a PID algorithm to obtain an adjustment opening of the gas storage module according to the first pressure value, and adjust the current opening of the gas storage module according to the adjustment opening until the second pressure value is within the preset range.

3. The bubble flushing device for a water purifier according to claim 2, characterized in that: The control unit is further configured to use a PID algorithm to obtain a calculation formula corresponding to the adjustment opening of the gas storage module according to the first pressure value as follows: △U=a*(P0–P1)+b*P0+c*(P0–d*P1+P2); Among them, the △U is used to characterize the adjustment opening of the gas storage module, P0 is used to characterize the first difference value between the current first pressure value of the gas output by the gas storage module and the preset pressure value, P1 is used to characterize the second difference value between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, P2 is used to characterize the third difference value between the second pressure value corresponding to the last flushing of the water tank and the preset pressure value, and a, b, c and d are all constants.

4. A water purifier, characterized in that: The water purifier comprises the bubble flushing device of the water purifier as described in any one of claims 1-3.

5. The water purifier according to claim 4, characterized in that: The water purifier comprises a first filter module; The first filter module is communicated with the water source and the water-gas mixing module respectively; The first filtering module is used to filter the incoming water source and output the filtered water to the water-gas mixing module.

6. The water purifier according to claim 5, characterized in that The water purifier also includes a second filter module; The second filter module comprises a filter element, an interlayer and a housing; The filter element is arranged in the interlayer, and the interlayer is arranged in the shell; The housing comprises a clean water inlet and a waste water inlet; The clean water inlet is communicated with the first filter module, and the waste water inlet is communicated with the waste water outlet of the water tank; wherein the waste water outlet is used to discharge the bubble water after flushing the water tank; The clean water inlet is used to input the water filtered by the first filter module into the filter element for filtering; The wastewater inlet is used to discharge the bubble water discharged from the wastewater outlet through between the interlayer and the shell.

7. The water purifier according to claim 6, characterized in that The water purifier also includes a first water quality detection module, a second water quality detection module, an adjustable wastewater ratio solenoid valve and a control module; The first water quality detection module is arranged on a first side of the second filter module close to the first filter module, and the second water quality detection module is arranged on a second side of the second filter module away from the first filter module; The first water quality detection module is used to detect the first mineral content of the water filtered by the first filtering module; The second water quality detection module is used to detect the second mineral content of the water filtered by the second filtering module; The control module is used to adjust the adjustable wastewater ratio solenoid valve according to the first mineral content so that the second mineral content is within a preset range.

8. The water purifier according to claim 7, characterized in that The water purifier also includes a colony detection module and a sterilization module disposed in the water tank; The colony detection module is used to detect the colony value in the water tank; The control module is also used to drive the sterilization module and / or the bubble flushing device to sterilize the water tank according to the colony value.

9. The water purifier according to claim 8, characterized in that The sterilization module includes a UV sterilization component.

10. The water purifier according to claim 8 or 9, characterized in that: The water purifier also includes a weight detection module and a timing module; The weight detection module is used to detect the amount of water in the water tank; The timing module is used to detect the storage time of water in the water tank; The control module is also used to drive the sterilization module and / or the bubble flushing device to sterilize the water tank according to the water volume and / or the storage time.

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