Control method of water purifying and drinking machine and water purifying and drinking machine

Abstract

The invention discloses a control method of a water purifying and drinking machine and the water purifying and drinking machine. Under the condition that a first liquid level of a mixing tank is lower than a first target liquid level and a second liquid level of a cold water tank is lower than a second target liquid level, a filtering unit is started to produce water, and outlet water of the filtering unit is conveyed to the cold water tank through a first water pump; the water in the cold water tank is conveyed to the mixing tank through a second water pump, so that the first water temperature of the cold water tank is reduced to the first target temperature, and the first liquid level reaches the first target liquid level; and then the filtering unit and the first water pump are started to supplement water to the cold water tank to a second target liquid level, the first water temperature is reduced to the first target temperature through refrigeration of the cold water tank, and then the water purifying and drinking machine enters a standby state. Therefore, the water purifying and drinking machine reliably meets the use requirements of the user for the sparkling water and the ice water, the user experience is improved, a water storage tank is omitted, and the water quality sanitation of drinking water in the water purifying and drinking machine is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of water supply equipment, and in particular to a control method for a water purifier and a water purifier. Background Art

[0002] Currently, most desktop water purifiers have heating and cooling functions, and the products can provide room temperature water, hot water, ice water and sparkling water for users to use.

[0003] The patent with publication number CN218978612U proposes a multifunctional sparkling water direct drinking machine, including: a water purification module, which can take raw water flowing into the water inlet and purify it into direct drinking water and flow it out from the water outlet; a heating module, which can heat the direct drinking water flowing through the heating module; a refrigeration module, which includes a refrigeration unit and a cold water tank for storing direct drinking water, the cold water tank is connected to the water outlet, and the refrigeration unit can refrigerate the direct drinking water in the cold water tank; a sparkling water module, which includes a gas cylinder filled with carbon dioxide and a sparkling water tank, the bubble water tank is arranged in the cold water tank, and the bubble water tank is respectively connected to the cold water tank and the gas cylinder; a casing, which is used to accommodate the water purification module, the heating module, the refrigeration module and the sparkling water module, and the casing is also provided with a water inlet, which is connected to the water purification module, the cold water tank and the sparkling water tank. The product is equipped with a water storage tank, which is used to store the direct drinking water purified by the water purification module; the direct drinking water flows from the water storage tank to the heating module, refrigeration module, and sparkling water module, and then can produce warm water, hot water, ice water, and sparkling water.

[0004] However, the direct drinking water produced by the water purification module of this patent is stored in a water tank, which will cause secondary pollution of the direct drinking water, easily breed bacteria, viruses and other harmful substances, and affect the water quality and hygiene of drinking water. Summary of the Invention

[0005] An embodiment of the present application provides a control method and a water purifier for a water purifier. When the liquid levels in a mixing tank and a cold water tank are low, the water output from the filter unit is transported to the cold water tank by a first water pump, and the water in the cold water tank is transported to the mixing tank by a second water pump, so as to reliably meet the user's demand for sparkling water and ice water and ensure the water quality and hygiene of the drinking water in the water purifier.

[0006] In a first aspect, a control method for a water purifier is provided, comprising: in response to a power-on instruction, obtaining a first liquid level of a mixing tank of the water purifier, the mixing tank being used to mix water obtained from a cold water tank of the water purifier with carbon dioxide obtained from a gas cylinder of the water purifier to produce sparkling water; when the first liquid level is lower than a first target liquid level and a second liquid level of the cold water tank is lower than a second target liquid level, starting a filter unit of the water purifier to produce water, and delivering the output water of the filter unit to the cold water tank through a first water pump of the water purifier; when the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit. , cooling is performed through the cold water tank to reduce the first water temperature of the cold water tank to a first target temperature; the water in the cold water tank is transported to the mixing tank through the second water pump of the water purifier, and when the first liquid level reaches the first target liquid level, the second water pump is stopped; the filter unit is started to make water, and the outlet water of the filter unit is transported to the cold water tank through the first water pump, and when the second liquid level reaches the second target liquid level, the first water pump and the filter unit are stopped, and cooling is performed through the cold water tank to reduce the first water temperature to the first target temperature; the water purifier enters a standby state.

[0007] In some embodiments, before the water purifier is put into the standby state, it also includes: obtaining a second water temperature in the mixing tank; when the second water temperature is higher than the second target water temperature and the second liquid level reaches the second target liquid level, closing the first water inlet valve of the water purifier and the water outlet valve of the mixing tank, and opening the second water inlet valve of the water purifier, the first water inlet valve is arranged between the outlet of the filter unit and the inlet of the first water pump, the water outlet valve is arranged at the first outlet of the mixing tank, and the second water inlet valve is arranged between the second outlet of the mixing tank and the outlet of the first water inlet valve; using the first water pump to transport the water in the mixing tank to the cold water tank, and using the second water pump to transport the water in the cold water tank to the mixing tank to replace the water in the mixing tank; cooling by the cold water tank, when the first water temperature drops to the first target temperature, stopping the first water pump and the second water pump, and closing the second water inlet valve.

[0008] By using the second water inlet valve, the first water pump and the second water pump to replace the water in the cold water tank with the water in the mixing tank when the second water temperature in the mixing tank is higher than the second target water temperature, the second water temperature is quickly lowered, ensuring that the subsequent mixing tank can provide qualified sparkling water.

[0009] In some embodiments, a negative pressure valve is provided between the outlet of the first water inlet valve and the inlet of the first water pump, the outlet of the second water inlet valve is connected to the inlet of the negative pressure valve, and the water outlet of the filter unit is transported to the cold water tank by the first water pump, including: opening the first water inlet valve, and using the first water pump to transport the water outlet of the filter unit to the cold water tank through the first water inlet valve, the negative pressure valve and the first water pump in sequence.

[0010] By setting a negative pressure valve, the water output from the filtration unit can be directly transported using the first water inlet valve, negative pressure valve and first water pump, avoiding secondary contamination of the water after re-filtration due to the setting of a water storage tank, and ensuring the water quality and hygiene of the drinking water in the water purifier.

[0011] In some embodiments, a first switching valve is provided between the outlet of the first water pump and the cold water tank. The first switching valve includes a first channel and a second channel. The first channel connects the outlet of the first water pump and the cold water tank, and the second channel connects the outlet of the first water pump and the heating module of the water purifier. Delivering the water output from the filtration unit to the cold water tank via the first water pump comprises: opening the first channel of the first switching valve and closing the second channel of the first switching valve; and utilizing the first water pump to deliver the water output from the filtration unit to the cold water tank via the first channel of the first switching valve. This ensures that the water output from the filtration unit is reliably delivered to the cold water tank.

[0012] In some embodiments, a second switching valve is provided between the second water pump and the mixing tank, the second switching valve includes a first channel and a second channel, the first channel of the second switching valve connects the outlet of the second water pump and the mixing tank, one end of the second channel of the second switching valve connects the outlet of the second water pump, and the other end connects to the water outlet of the water purifier through a check valve, and the water in the cold water tank is transported to the mixing tank by the second water pump of the water purifier, including: opening the first channel of the second switching valve and closing the second channel of the second switching valve; and using the second water pump to transport the water in the cold water tank to the mixing tank through the first channel of the second switching valve.

[0013] Furthermore, by providing a check valve between the second switching valve and the water outlet, it is possible to prevent normal-temperature water or hot water from flowing into the outlet pipes for chilled water and sparkling water when the water outlet is outputting normal-temperature water or hot water, thereby ensuring that the water purifier can reliably provide chilled water and sparkling water.

[0014] In some embodiments, after the water purifier is put into standby mode, it also includes: in response to receiving an ice water outlet operation, opening the second channel of the second switching valve and closing the first channel of the second switching valve; using the second water pump to transport the water in the cold water tank to the water outlet part through the second channel of the second switching valve, and the water outlet part outputs ice water until a stop water outlet operation is received and the second water pump is stopped; starting the filter unit to make water, opening the first channel of the first switching valve and closing the second channel of the first switching valve, and using the first water pump to transport the water outlet of the filter unit to the cold water tank through the first channel of the first switching valve; when the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit; cooling the cold water tank to reduce the first water temperature to the first target temperature.

[0015] By cooperating the second switching valve with the second water pump, it is ensured that the water purifier can reliably output ice water. By cooperating the second switching valve with the first water pump and cooling the water in the cold water tank, the cold water tank can be efficiently replenished and cooled, thereby improving the reliability of the cold water tank in providing ice water.

[0016] In some embodiments, after the water purifier enters the standby state, the method further includes: in response to receiving a bubble water discharge operation, injecting carbon dioxide into the mixing tank using the gas cylinder according to a target gas volume and maintaining the pressure; when the pressure maintenance time reaches a target time, opening the water outlet valve of the mixing tank so that the bubble water in the mixing tank reaches the water outlet portion through the water outlet valve, and the bubble water is discharged from the water outlet portion until a water discharge stop operation is received and the water outlet valve is closed; opening the first channel of the second switching valve and closing the second channel of the second switching valve, and using the second water pump to transfer water in the cold water tank to the mixing tank through the first channel of the second switching valve, and stopping the second water pump when the first liquid level reaches the first target liquid level; starting the filter unit to produce water, opening the first channel of the first switching valve and closing the second channel of the first switching valve, and using the first water pump to transfer the water outlet of the filter unit to the cold water tank through the first channel of the first switching valve; when the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit; and cooling the cold water tank to reduce the first water temperature to the first target temperature.

[0017] By controlling the gas cylinder and the water outlet valve, the dispenser ensures reliable sparkling water delivery. The second switching valve, in conjunction with the second water pump, ensures reliable water replenishment of the mixing tank. By coordinating the second switching valve with the first water pump and cooling the water in the cold water tank, the cold water tank is efficiently replenished and cooled. This ensures that the water volume and temperature in the mixing tank and cold water tank are quickly restored after the dispenser delivers sparkling water, improving the reliability of the cold water tank's supply of sparkling and chilled water.

[0018] In some embodiments, after the water purifier enters the standby state, the method further includes: obtaining a second water temperature in the mixing tank; when the second water temperature is higher than a second target water temperature, closing the first water inlet valve of the water purifier and the water outlet valve of the mixing tank, and opening the second water inlet valve of the water purifier, wherein the first water inlet valve is arranged between the outlet of the filter unit and the inlet of the first water pump, the water outlet valve is arranged at the first outlet of the mixing tank, and the second water inlet valve is arranged between the second outlet of the mixing tank and the outlet of the first water inlet valve; opening the first channel of the first switching valve and closing the second channel of the first switching valve, opening the first channel of the second switching valve and closing the second channel of the second switching valve; using the first water pump to transport the outlet water of the filter unit to the cold water tank through the first channel of the first switching valve; using the second water pump to transport the water in the cold water tank to the mixing tank through the first channel of the second switching valve to replace the water in the mixing tank; cooling by the cold water tank, when the first water temperature drops to the first target temperature, stopping the first water pump and the second water pump, and closing the second water inlet valve.

[0019] By using the second water inlet valve, the first water pump and the second water pump to replace the water in the cold water tank with the water in the mixing tank when the second water temperature in the mixing tank is higher than the second target water temperature, the second water temperature is quickly lowered, ensuring that the subsequent mixing tank can provide qualified sparkling water.

[0020] In some embodiments, after the water purifier enters the standby state, the system further includes: in response to receiving a water outlet operation for normal temperature water, starting the filter unit to produce water, opening the second channel of the first switching valve and closing the first channel of the first switching valve, keeping the heating module in a stopped state, and using the first water pump to transport the water outlet of the filter unit to the water outlet portion through the second channel of the first switching valve and the heating module, so that the water outlet portion outputs normal temperature water until a water outlet stop operation is received, stopping the first water pump and the filter unit. In this way, the filter unit, the first water pump, and the first switching valve cooperate to ensure that the water purifier can reliably provide normal temperature water.

[0021] In response to a hot water outlet operation, the filter unit is activated to produce water, the second channel of the first switching valve is opened and the first channel of the first switching valve is closed, the heating module is activated, and the first water pump is used to transport the water outlet of the filter unit to the water outlet portion through the second channel of the first switching valve and the heating module, and the water outlet portion outputs hot water until a stop water outlet operation is received, at which point the heating module, the first water pump, and the filter unit are stopped. In this way, the filter unit, the first water pump, the first switching valve, and the heating module cooperate to ensure that the water purifier can reliably provide hot water.

[0022] In a second aspect, a water purifier is provided, which is controlled by the control method of the water purifier described in the first aspect, and the water purifier includes the mixing tank, the cold water tank, the gas cylinder, the filter unit, the first water pump and the second water pump.

[0023] By applying the above technical solution, in response to a power-on instruction, a first liquid level of a mixing tank of the water purifier is obtained, the mixing tank being used to mix water obtained from the cold water tank of the water purifier with carbon dioxide obtained from the gas cylinder of the water purifier to produce sparkling water; when the first liquid level is lower than a first target liquid level and a second liquid level in the cold water tank is lower than a second target liquid level, the filter unit of the water purifier is started to produce water, and the water output from the filter unit is delivered to the cold water tank by the first water pump of the water purifier; when the second liquid level reaches the second target liquid level, the first water pump and the filter unit are stopped, and the cold water tank is used for cooling, so that the first water temperature in the cold water tank is reduced to a first target temperature; the water in the cold water tank is delivered to the mixing tank by the second water pump of the water purifier, and when the first liquid level reaches the first target liquid level, the second water pump is stopped; the filter unit is started to produce water, and the water output from the filter unit is delivered to the cold water tank by the first water pump; when the second liquid level reaches the second target liquid level, the first water pump and the filter unit are stopped, and the cold water tank is used for cooling, so that the first water temperature is reduced to the first target temperature; and the water purifier enters a standby state. In this way, the mixing tank and cold water tank of the water purifier can maintain sufficient water and meet the temperature requirements, thereby reliably meeting the user's demand for sparkling water and ice water, improving the user experience, and eliminating the water storage tank between the filter unit and the first water pump, ensuring the water quality and hygiene of the drinking water in the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 1 ;

[0026] Figure 2 This is a schematic structural diagram of a water purifier according to an embodiment of the present application;

[0027] Figure 3 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 2 ;

[0028] Figure 4 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 3 ;

[0029] Figure 5 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 4 ;

[0030] Figure 6 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 5 ;

[0031] Figure 7 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 6 ;

[0032] Figure 8 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 7 ;

[0033] Figure 9 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 8 ;

[0034] Figure 10 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 9 ;

[0035] Figure 11 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 10 ;

[0036] Figure 12 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 10 one;

[0037] Figure 13 This is a process of a control method of a water purifier according to an embodiment of the present application. Figure 10 two.

[0038] Figure 2In the figure, 100, filter unit; 1, first water inlet valve; 2, negative pressure valve; 3, first water pump; 4, first switching valve; 5, heating module; 6, water outlet; 7, check valve; 8, cold water tank; 9, second water pump; 10, second switching valve; 11, gas cylinder; 12, mixing tank; 13, pressure relief valve; 14, water outlet valve; 15, first liquid level sensor; 16, second water inlet valve; 17, temperature sensor; 18, second liquid level sensor. DETAILED DESCRIPTION

[0039] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0040] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0041] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0042] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0043] It should also be understood that although the present application has been described with reference to certain specific examples, those skilled in the art will readily be able to implement many other equivalent forms of the present application.

[0044] The above and other aspects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0045] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments described are merely examples of the present application and may be implemented in a variety of ways. Familiar and / or repetitive functions and structures are not described in detail to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details described herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously utilize the present application with substantially any suitable detailed structure.

[0046] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may all refer to one or more of the same or different embodiments according to the present application.

[0047] A control method for a water purifier according to an embodiment of the present application is provided. After the water purifier is turned on, if the first liquid level in the mixing tank is lower than the first target liquid level and the second liquid level in the cold water tank is lower than the second target liquid level, the filter unit is activated to produce water, and the water output from the filter unit is delivered to the cold water tank via a first water pump to replenish the cold water tank with water to the second target liquid level. The cold water tank is then cooled to reduce the first water temperature in the cold water tank to the first target temperature. The water in the cold water tank is then delivered to the mixing tank via a second water pump to bring the first liquid level to the first target liquid level. The filter unit and the first water pump are then activated to replenish the cold water tank with water to bring the second liquid level to the second target liquid level. The cold water tank is then cooled to reduce the first water temperature to the first target temperature. The water purifier is then placed into a standby state. In this way, the mixing tank and the cold water tank of the water purifier are kept sufficiently full and meet temperature requirements, thereby reliably meeting the user's needs for sparkling water and ice water, improving the user experience. Furthermore, a water storage tank is eliminated between the filter unit and the first water pump, ensuring the hygienic quality of the drinking water in the water purifier.

[0048] like Figure 1 As shown, the control method of the water purifier includes the following steps:

[0049] Step S101, in response to a power-on instruction, obtains a first liquid level of a mixing tank 12 of the water purifier, the mixing tank 12 being used to mix water obtained from the cold water tank 8 of the water purifier with carbon dioxide obtained from the gas cylinder 11 of the water purifier to produce sparkling water.

[0050] In this embodiment, Figure 2 As shown, the water purifier includes a mixing tank 12 for preparing sparkling water and a cold water tank 8 for preparing ice water. Specifically, the mixing tank 12 can mix water obtained from the water purifier's cold water tank 8 with carbon dioxide obtained from the water purifier's gas cylinder 11 to produce sparkling water. The cold water tank 8 can be refrigerated to prepare ice water and is also used to supply water to the mixing tank 12 to ensure that the mixing tank 12 uses ice water to prepare sparkling water, thereby increasing the solubility of carbon dioxide in the sparkling water and giving the sparkling water a good taste. In some embodiments of the present application, the mixing tank 12 is also provided with a pressure relief valve 13. The pressure relief valve 13 can maintain the air pressure in the mixing tank 12 at 0.5-0.7 MPa, allowing the carbon dioxide gas to fully dissolve in the water in the mixing tank, thereby improving the taste of the sparkling water.

[0051] The water purifier also includes a gas cylinder 11 storing carbon dioxide, a filter unit 100 for filtering tap water into pure water or drinking water, a first water pump 3 for pumping water from the filter unit 100, and a second water pump 9 for pumping water from the cold water tank 8. A first liquid level sensor 15 and a temperature sensor 17 are provided in the mixing tank 12, and a second liquid level sensor 18 is provided in the cold water tank 8. It should be noted that in this embodiment of the water purifier, no water tank is provided between the filter unit 100 and the first water pump 3.

[0052] The power-on instruction may be triggered by a user's power-on operation or automatically triggered when an automatic power-on condition (such as a scheduled power-on) is met. In response to the power-on instruction, the first liquid level of the mixing tank 12 is obtained by the first liquid level sensor 15 of the mixing tank 12.

[0053] In step S102, when the first liquid level is lower than the first target liquid level and the second liquid level of the cold water tank 8 is lower than the second target liquid level, the filter unit 100 of the water purifier is started to produce water, and the water output from the filter unit 100 is transported to the cold water tank 8 through the first water pump 3 of the water purifier.

[0054] In this embodiment, it is determined whether the first liquid level is lower than the first target liquid level, and the second liquid level of the cold water tank 8 is obtained through the second liquid level sensor 18 to determine whether the second liquid level is lower than the second target liquid level. If the first liquid level is lower than the first target liquid level and the second liquid level is lower than the second target liquid level, it means that both the mixing tank 12 and the cold water tank 8 need to be replenished with water. In this case, the filter unit 100 is started to produce water, and the first water pump 3 is started to transport the water output of the filter unit 100 to the cold water tank 8 to replenish the cold water tank 8.

[0055] In step S103 , when the second liquid level reaches the second target liquid level, the first water pump 3 and the filter unit 100 are stopped, and the cold water tank 8 is cooled to reduce the first water temperature of the cold water tank 8 to the first target temperature.

[0056] In this embodiment, if the second liquid level reaches the second target liquid level, it means that the water replenishment of the cold water tank 8 has been completed, and the first water pump 3 and the filter unit 100 are stopped to stop replenishing the cold water tank 8. Then, the cold water tank 8 is cooled to reduce the first water temperature of the cold water tank 8 to the first target temperature to meet the temperature requirements of ice water and sparkling water.

[0057] Step S104 , the water in the cold water tank 8 is transported to the mixing tank 12 via the second water pump 9 of the water purifier, and the second water pump 9 is stopped when the first liquid level reaches the first target liquid level.

[0058] In this embodiment, the second water pump 9 is arranged between the cold water tank 8 and the mixing tank 12. When the first water temperature drops to the first target temperature, the second water pump 9 is started to transport the water in the cold water tank 8 to the mixing tank 12. If the first liquid level reaches the first target liquid level, it means that the water replenishment of the mixing tank 12 is completed, and the second water pump 9 is stopped.

[0059] In step S105, the filter unit 100 is started to produce water, and the water output from the filter unit 100 is transported to the cold water tank 8 through the first water pump 3. When the second liquid level reaches the second target liquid level, the first water pump 3 and the filter unit 100 are stopped, and the cold water tank 8 is used for cooling to reduce the first water temperature to the first target temperature.

[0060] In this embodiment, after the mixing tank 12 is replenished with water, the second liquid level is lower than the second target liquid level, and the cold water tank 8 needs to be replenished with water again. The filter unit 100 is started to produce water, and the water output of the filter unit 100 is transported to the cold water tank 8 through the first water pump 3. If the second liquid level reaches the second target liquid level, it means that the replenishment of the cold water tank 8 has been completed, and the first water pump 3 and the filter unit 100 are stopped to stop replenishing the cold water tank 8. Then, the cold water tank 8 is cooled to reduce the first water temperature of the cold water tank 8 to the first target temperature to meet the temperature requirements of ice water and bubble water.

[0061] Step S106: put the water purifier into standby mode.

[0062] Through steps S101-105, the mixing tank 12 and the cold water tank 8 are both provided with sufficient water at a suitable temperature. At this time, the water purifier can quickly provide sparkling water and ice water, and the water purifier enters the standby state.

[0063] In some embodiments of the present application, the first target liquid level is the maximum liquid level at which the mixing tank 12 reaches a full water state, and the second target liquid level is the maximum liquid level at which the cold water tank 8 reaches a full water state. Thus, by making the first liquid level reach the first target liquid level and the second liquid level reach the second target liquid level, it can be ensured that the mixing tank 12 and the cold water tank 8 are restored to a full water state in time to ensure sufficient water volume.

[0064] The control method of the water purifier of the embodiment of the present application obtains the first liquid level of the mixing tank 12 of the water purifier in response to the power-on instruction. The mixing tank 12 is used to mix the water obtained from the cold water tank 8 of the water purifier with the carbon dioxide obtained from the gas cylinder 11 of the water purifier to produce sparkling water; when the first liquid level is lower than the first target liquid level and the second liquid level of the cold water tank 8 is lower than the second target liquid level, the filter unit 100 of the water purifier is started to produce water, and the water output of the filter unit 100 is transported to the cold water tank 8 through the first water pump 3 of the water purifier; when the second liquid level reaches the second target liquid level, the first water pump 3 and the filter unit 100 are stopped. Element 100, uses cold water tank 8 to cool the first water temperature in cold water tank 8 to a first target temperature; uses the second water pump 9 of the water purifier to transfer water from cold water tank 8 to mixing tank 12; when the first liquid level reaches the first target level, the second water pump 9 is stopped; the filter unit 100 is started to produce water, and the water output from the filter unit 100 is transferred to the cold water tank 8 via the first water pump 3; when the second liquid level reaches the second target level, the first water pump 3 and the filter unit 100 are stopped, and the cold water tank 8 is used to cool the first water temperature to the first target temperature; and the water purifier enters standby mode. In this way, the mixing tank 12 and cold water tank 8 of the water purifier maintain sufficient water volume and meet temperature requirements, thereby reliably meeting user needs for sparkling water and ice water, improving the user experience. Furthermore, the water storage tank is eliminated between the filter unit 100 and the first water pump 3, avoiding secondary contamination of the water output from the filter unit and ensuring the hygienic quality of the drinking water in the water purifier.

[0065] In some embodiments of the present application, before the water purifier enters the standby state, Figure 3 As shown, the control method further includes:

[0066] Step S201, obtaining the second water temperature in the mixing tank 12.

[0067] Because the lower the water temperature, the higher the solubility of carbon dioxide gas in water, and the better the taste of the resulting sparkling water; conversely, the higher the water temperature, the lower the solubility of carbon dioxide gas in water, and the worse the taste of the resulting sparkling water. In this embodiment, the second water temperature of the mixing tank 12 is obtained using a temperature sensor 17 in the mixing tank 12.

[0068] Step S202, when the second water temperature is higher than the second target water temperature and the second liquid level reaches the second target liquid level, close the first water inlet valve 1 of the water purifier and the water outlet valve 14 of the mixing tank 12, and open the second water inlet valve 16 of the water purifier. The first water inlet valve 1 is arranged between the outlet of the filter unit 100 and the inlet of the first water pump 3, the water outlet valve 14 is arranged at the first outlet of the mixing tank 12, and the second water inlet valve 16 is arranged between the second outlet of the mixing tank 12 and the outlet of the first water inlet valve 1.

[0069] In this embodiment, Figure 2 As shown, the water purifier includes a first water inlet valve 1, a second water inlet valve 16 and a water outlet valve 14 of the mixing tank 12. The first water inlet valve 1 is used to cooperate with the first water pump 3 to transport the water outlet of the filter unit 100 to the cold water tank 8, the second water inlet valve 16 is used to cooperate with the second water pump 9 to return the water in the mixing tank 12 to the cold water tank 8, and the water outlet valve 14 is used to transport the bubble water in the mixing tank 12 to the water outlet part 6 of the water purifier.

[0070] If the second water temperature is higher than the second target water temperature and the second liquid level reaches the second target liquid level, it means that the water temperature of the mixing tank 12 is too high and there is enough ice water in the cold water tank 8. In this case, close the first water inlet valve 1 of the water purifier and the water outlet valve 14 of the mixing tank 12, open the second water inlet valve 16 of the water purifier, and then transport the ice water with lower temperature in the cold water tank 8 to the mixing tank 12 to replace the water with higher temperature in the mixing tank 12, thereby lowering the second water temperature.

[0071] In step S203 , the water in the mixing tank 12 is transported to the cold water tank 8 by the first water pump 3 , and the water in the cold water tank 8 is transported to the mixing tank 12 by the second water pump 9 , so as to replace the water in the mixing tank 12 .

[0072] In this embodiment, the first water pump 3 and the second water pump 9 are started to transport the water in the mixing tank 12 to the cold water tank 8 through the second water inlet valve 16 and the first water pump 3. At the same time, the water in the cold water tank 8 is transported to the mixing tank 12 through the second water pump 9 to replace the water in the mixing tank 12.

[0073] In step S204 , cooling is performed by the cold water tank 8 . When the first water temperature drops to the first target temperature, the first water pump 3 and the second water pump 9 are stopped, and the second water inlet valve 16 is closed.

[0074] Since the water with higher temperature in the mixing tank 12 enters the cold water tank 8, the first water temperature rises. In order to lower the first water temperature, refrigeration is performed through the cold water tank 8. If the first water temperature drops to the first target temperature, the first water pump 3 and the second water pump 9 are stopped, and the second water inlet valve 16 is closed to complete the replacement of the water in the mixing tank 12.

[0075] When the second water temperature in the mixing tank 12 is higher than the second target water temperature, the water in the cold water tank 8 is replaced with the water in the mixing tank 12 by using the second water inlet valve 16, the first water pump 3 and the second water pump 9, thereby quickly lowering the second water temperature and ensuring that the subsequent mixing tank 12 can provide qualified bubble water.

[0076] Optionally, when step S203 is started, cooling can be performed synchronously through the cold water tank 8. Alternatively, cooling can be performed through the cold water tank 8 after a period of time has passed since step S203 was performed.

[0077] In some embodiments of the present application, when the second water temperature is higher than the second target water temperature and the second liquid level has not reached the second target liquid level, steps S102 and S103 are first executed, and then step S202 is executed, thereby ensuring that there is sufficient ice water with a suitable temperature in the cold water tank 8, thereby achieving efficient reduction of the second water temperature.

[0078] In some embodiments of the present application, Figure 2 As shown, a negative pressure valve 2 is provided between the outlet of the first water inlet valve 1 and the inlet of the first water pump 3, the outlet of the second water inlet valve 16 is connected to the inlet of the negative pressure valve 2, and the water outlet of the filter unit 100 is delivered to the cold water tank 8 through the first water pump 3, including:

[0079] The first water inlet valve 1 is opened, and the first water pump 3 is used to sequentially deliver the water out of the filter unit 100 to the cold water tank 8 through the first water inlet valve 1 , the negative pressure valve 2 and the first water pump 3 .

[0080] In this embodiment, the negative pressure valve 2 is internally provided with a diaphragm and a control rod, and the negative pressure valve 2 works in conjunction with the first water pump 3. When the first water pump 3 is operating, it drives the diaphragm inside the negative pressure valve 2 to move, which in turn drives the control rod within the valve body, thereby achieving conduction of the negative pressure valve 2. When the first water pump 3 is not operating, the negative pressure valve 2 remains closed due to the lack of driving force.

[0081] By setting up the negative pressure valve 2, the water output from the filter unit 100 can be directly transported by the first water inlet valve 1, the negative pressure valve 2 and the first water pump 3, avoiding secondary contamination of the filtered water due to the setting up of the water storage tank, and ensuring the water quality and hygiene of the drinking water in the water purifier.

[0082] In some embodiments of the present application, Figure 2 As shown, a first switching valve 4 is provided between the outlet of the first water pump 3 and the cold water tank 8. The first switching valve 4 includes a first channel and a second channel. The first channel connects the outlet of the first water pump 3 and the cold water tank 8, and the second channel connects the outlet of the first water pump 3 and the heating module 5 of the water purifier. The water output from the filter unit 100 is delivered to the cold water tank 8 through the first water pump 3, including:

[0083] Open the first channel of the first switching valve 4 and close the second channel of the first switching valve 4;

[0084] The first water pump 3 is used to deliver the water output from the filter unit 100 to the cold water tank 8 through the first channel of the first switching valve 4 .

[0085] In this embodiment, the first switching valve 4 may be a three-way valve including a first channel (AC) and a second channel (AB). When the heating module 5 is stopped, the water purifier can provide room temperature water. When the heating module 5 is started, the water purifier can provide hot water. When the first water pump 3 is used to deliver the water output from the filter unit 100 to the cold water tank 8, the first channel of the first switching valve 4 is first opened and the second channel of the first switching valve 4 is closed. The first water pump 3 is then started, and the water output from the filter unit 100 is delivered to the cold water tank 8 via the first channel of the first switching valve 4, thereby ensuring reliable delivery of the water output from the filter unit 100 to the cold water tank 8.

[0086] In some embodiments of the present application, a second switching valve 10 is provided between the second water pump 9 and the mixing tank 12. The second switching valve 10 includes a first channel and a second channel. The first channel of the second switching valve 10 connects the outlet of the second water pump 9 and the mixing tank 12. One end of the second channel of the second switching valve 10 connects to the outlet of the second water pump 9, and the other end connects to the water outlet 6 of the water purifier through the check valve 7. The water in the cold water tank 8 is transported to the mixing tank 12 by the second water pump 9 of the water purifier, including:

[0087] Opening the first channel of the second switching valve 10 and closing the second channel of the second switching valve 10;

[0088] The water in the cold water tank 8 is delivered to the mixing tank 12 by the second water pump 9 through the first passage of the second switching valve 10 .

[0089] In this embodiment, the second switching valve 10 may be a three-way valve comprising a first channel (AC) and a second channel (AB). When the second water pump 9 of the water purifier is used to transfer water from the cold water tank 8 to the mixing tank 12, the first channel of the second switching valve 10 is first opened and the second channel of the second switching valve 10 is closed. The second water pump 9 is then activated to transfer water from the cold water tank 8 to the mixing tank 12 via the first channel of the second switching valve 10, thereby ensuring reliable delivery of water from the cold water tank 8 to the mixing tank 12. Furthermore, by providing a check valve 7 between the second switching valve 10 and the water outlet 6, this prevents normal temperature water or hot water from flowing into the outlet pipes for ice water and sparkling water when the water outlet 6 is outputting normal temperature water or hot water, thereby ensuring that the water purifier reliably provides ice water and sparkling water.

[0090] In some embodiments of the present application, after the water purifier enters the standby state, Figure 4 As shown, the following steps are also included:

[0091] Step S301 , in response to receiving the ice water outlet operation, opening the second channel of the second switching valve 10 and closing the first channel of the second switching valve 10 .

[0092] In this embodiment, the ice water dispensing operation can be a user pressing the ice water dispensing button on the water purifier or a corresponding touch operation on the human-computer interaction interface. In response to the ice water dispensing operation, the second channel of the second switching valve 10 is opened and the first channel of the second switching valve 10 is closed.

[0093] In step S302, the second water pump 9 is used to transport the water in the cold water tank 8 to the water outlet 6 through the second channel of the second switching valve 10, and the water outlet 6 outputs the chilled water until the water outlet operation is stopped and the second water pump 9 is stopped.

[0094] The second water pump 9 is started to transfer the chilled water in the cold water tank 8 to the second channel of the second switching valve 10, and the water in the cold water tank 8 is transferred to the water outlet 6, which outputs the chilled water until a stop water discharge operation is received, thereby stopping the second water pump 9. The stop water discharge operation can be performed by the user pressing a stop water discharge button on the water purifier, or by the user operating the stop water discharge button on the water purifier through the human-computer interface, or can be automatically triggered when the target water discharge volume is met.

[0095] In step S303 , the filter unit 100 is started to produce water, the first channel of the first switching valve 4 is opened and the second channel of the first switching valve 4 is closed, and the water output from the filter unit 100 is delivered to the cold water tank 8 via the first channel of the first switching valve 4 by the first water pump 3 .

[0096] Since the cold water tank 8 has output some ice water, it is necessary to replenish the cold water tank 8 with water, start the filter unit 100 to produce water, open the first channel of the first switching valve 4 and close the second channel of the first switching valve 4, and then start the first water pump 3 to transport the water output of the filter unit 100 to the cold water tank 8 through the first channel of the first switching valve 4.

[0097] Step S304 : When the second liquid level reaches the second target liquid level, the first water pump 3 and the filter unit 100 are stopped.

[0098] If the second liquid level reaches the second target liquid level, it indicates that the water replenishment to the cold water tank 8 has been completed, and the first water pump 3 and the filter unit 100 are stopped.

[0099] Step S305 , cooling is performed by the cold water tank 8 to reduce the first water temperature to the first target temperature.

[0100] The water entering the cold water tank 8 is at room temperature, which will increase the first water temperature. In order to lower the first water temperature, the cold water tank 8 is refrigerated to lower the first water temperature to the first target temperature, ensuring that the water purifier provides qualified ice water later.

[0101] By cooperating the second switching valve 10 with the second water pump 9, it is ensured that the water purifier can reliably output ice water. By cooperating the second switching valve 10 with the first water pump 3 and cooling the water in the cold water tank 8, the cold water tank 8 can be efficiently replenished with water and cooled, thereby improving the reliability of the cold water tank 8 in providing ice water.

[0102] In some embodiments of the present application, after the water purifier enters the standby state, Figure 5 As shown, the following steps are also included:

[0103] Step S401 , in response to receiving the bubble water dispensing operation, injecting carbon dioxide into the mixing tank 12 using the gas cylinder 11 according to the target gas volume and maintaining the pressure.

[0104] In this embodiment, the sparkling water dispensing operation can be performed by the user pressing the sparkling water dispensing button on the water purifier, or by the user performing a corresponding touch operation on the human-computer interaction interface. In response to the sparkling water dispensing operation, carbon dioxide is injected into the mixing tank 12 using the gas cylinder 11 according to the target gas volume and the pressure is maintained.

[0105] In step S402, when the pressure holding time reaches the target time, the water outlet valve 14 of the mixing tank 12 is opened, so that the bubble water in the mixing tank 12 reaches the water outlet part 6 through the water outlet valve 14, and the bubble water is output by the water outlet part 6 until the water outlet operation is stopped and the water outlet valve 14 is closed.

[0106] After carbon dioxide is injected into the mixing tank 12, the pressure is maintained for a target period of time to allow the carbon dioxide to fully dissolve. The water outlet valve 14 of the mixing tank 12 is then opened to allow the bubble water in the mixing tank 12 to reach the water outlet part 6 through the water outlet valve 14. The bubble water is then output from the water outlet part 6 until the water outlet operation is stopped and the water outlet valve 14 is closed.

[0107] Step S403, open the first channel of the second switching valve 10 and close the second channel of the second switching valve 10, use the second water pump 9 to transport the water in the cold water tank 8 to the mixing tank 12 through the first channel of the second switching valve 10, and stop the second water pump 9 when the first liquid level reaches the first target liquid level.

[0108] In this embodiment, since the mixing tank 12 outputs some bubble water, the mixing tank 12 needs to be replenished with water. First, the first channel of the second switching valve 10 is opened and the second channel of the second switching valve 10 is closed, and then the second water pump 9 is started to transport the water in the cold water tank 8 to the mixing tank 12 through the first channel of the second switching valve 10. When the first liquid level reaches the first target liquid level, it means that the water replenishment of the mixing tank 12 has been completed, and the second water pump 9 is stopped.

[0109] In step S404 , the filter unit 100 is started to produce water, the first channel of the first switching valve 4 is opened and the second channel of the first switching valve 4 is closed, and the water output from the filter unit 100 is delivered to the cold water tank 8 via the first channel of the first switching valve 4 by the first water pump 3 .

[0110] In this embodiment, since the cold water tank 8 has output some ice water, it is necessary to replenish the cold water tank 8, start the filter unit 100 to produce water, open the first channel of the first switching valve 4 and close the second channel of the first switching valve 4, and then start the first water pump 3 to transport the water output of the filter unit 100 to the cold water tank 8 through the first channel of the first switching valve 4.

[0111] Step S405 : When the second liquid level reaches the second target liquid level, the first water pump 3 and the filter unit 100 are stopped.

[0112] If the second liquid level reaches the second target liquid level, it indicates that the water replenishment to the cold water tank 8 has been completed, and the first water pump 3 and the filter unit 100 are stopped.

[0113] Step S406: refrigerating the water by using the cold water tank 8 to reduce the first water temperature to the first target temperature.

[0114] The water entering the cold water tank 8 is at room temperature, which will increase the first water temperature. In order to lower the first water temperature, the cold water tank 8 is refrigerated to lower the first water temperature to the first target temperature, ensuring that the water purifier provides qualified ice water later.

[0115] By controlling the gas cylinder 11 and the water outlet valve 14, the dispenser ensures reliable output of sparkling water. By coordinating the second switching valve 10 with the second water pump 9, the mixing tank 12 is reliably replenished with water. By coordinating the second switching valve 10 with the first water pump 3 and cooling the water in the cold water tank 8, the cold water tank 8 is efficiently replenished and cooled. This ensures that the water volume and temperature in the mixing tank 12 and the cold water tank 8 are quickly restored after the dispenser outputs sparkling water, thereby improving the reliability of the cold water tank 8 in providing sparkling water and ice water.

[0116] In some embodiments of the present application, after the water purifier enters the standby state, Figure 6 As shown, the following steps are also included:

[0117] Step S501 , obtaining a second water temperature in the mixing tank 12 .

[0118] In this embodiment, the second water temperature is obtained by the temperature sensor 17 in the mixing tank 12 .

[0119] In step S502, when the second water temperature is higher than the second target water temperature, the first water inlet valve 1 of the water purifier and the water outlet valve 14 of the mixing tank 12 are closed, and the second water inlet valve 16 of the water purifier is opened. The first water inlet valve 1 is arranged between the outlet of the filter unit 100 and the inlet of the first water pump 3, the water outlet valve 14 is arranged at the first outlet of the mixing tank 12, and the second water inlet valve 16 is arranged between the second outlet of the mixing tank 12 and the outlet of the first water inlet valve 1.

[0120] In this embodiment, if the second water temperature is higher than the second target water temperature, it means that the water temperature of the mixing tank 12 is too high. In this case, the first water inlet valve 1 of the water purifier and the water outlet valve 14 of the mixing tank 12 are closed, and the second water inlet valve 16 of the water purifier is opened. Subsequently, the ice water with lower temperature in the cold water tank 8 is transported to the mixing tank 12 to replace the water with higher temperature in the mixing tank 12, thereby lowering the second water temperature.

[0121] Step S503 , opening the first channel of the first switching valve 4 and closing the second channel of the first switching valve 4 , opening the first channel of the second switching valve 10 and closing the second channel of the second switching valve 10 .

[0122] In this embodiment, the first channel of the first switching valve 4 is opened and the second channel of the first switching valve 4 is closed to connect the first water pump 3 and the cold water tank 8. The first channel of the second switching valve 10 is opened and the second channel of the second switching valve 10 is closed to connect the second water pump 9 and the mixing tank 12.

[0123] In step S504, the first water pump 3 is used to deliver the water output from the filter unit 100 to the cold water tank 8 via the first channel of the first switching valve 4; the second water pump 9 is used to deliver the water in the cold water tank 8 to the mixing tank 12 via the first channel of the second switching valve 10 to replace the water in the mixing tank 12.

[0124] Start the first water pump 3 and the second water pump 9, and transport the water in the mixing tank 12 to the cold water tank 8 through the second water inlet valve 16, the first water pump 3 and the first channel of the first switching valve 4. At the same time, transport the water in the cold water tank 8 to the cold water tank 8 through the second water pump 9 and the first channel of the second switching valve 10 to replace the water in the mixing tank 12.

[0125] In step S505 , cooling is performed by the cold water tank 8 . When the first water temperature drops to the first target temperature, the first water pump 3 and the second water pump 9 are stopped, and the second water inlet valve 16 is closed.

[0126] Since the water with higher temperature in the mixing tank 12 enters the cold water tank 8, the first water temperature rises. In order to lower the first water temperature, refrigeration is performed through the cold water tank 8. If the first water temperature drops to the first target temperature, the first water pump 3 and the second water pump 9 are stopped, and the second water inlet valve 16 is closed to complete the replacement of the water in the mixing tank 12.

[0127] When the second water temperature in the mixing tank 12 is higher than the second target water temperature, the water in the cold water tank 8 is replaced with the water in the mixing tank 12 by using the second water inlet valve 16, the first water pump 3 and the second water pump 9, thereby quickly lowering the second water temperature and ensuring that the subsequent mixing tank 12 can provide qualified bubble water.

[0128] In some embodiments of the present application, after the water purifier enters the standby state, the method further includes:

[0129] In response to receiving a normal temperature water outlet operation, the filter unit 100 is started to produce water, the second channel of the first switching valve 4 is opened and the first channel of the first switching valve 4 is closed, the heating module 5 is kept in a stopped state, and the first water pump 3 is used to transport the outlet water of the filter unit 100 through the second channel of the first switching valve 4 and the heating module 5 to the water outlet portion 6, and the water outlet portion 6 outputs normal temperature water until a stop water outlet operation is received, and the first water pump 3 and the filter unit 100 are stopped;

[0130] In response to receiving a hot water outlet operation, the filter unit 100 is started to produce water, the second channel of the first switching valve 4 is opened and the first channel of the first switching valve 4 is closed, the heating module 5 is started, and the first water pump 3 is used to transport the water outlet of the filter unit 100 to the water outlet part 6 through the second channel of the first switching valve 4 and the heating module 5, and the hot water is output by the water outlet part 6 until the water outlet stop operation is received, and the heating module 5, the first water pump 3 and the filter unit 100 are stopped.

[0131] In this embodiment, the water purifier can also provide normal temperature water and hot water. The normal temperature water outlet operation can be a user pressing the normal temperature water outlet button on the water purifier, or it can be a corresponding touch operation of the user on the human-computer interaction interface. In response to receiving the normal temperature water outlet operation, the filter unit 100 is started to produce water, and the second channel of the first switching valve 4 is opened and the first channel of the first switching valve 4 is closed. The heating module 5 is kept in a stopped state, and the first water pump 3 is started to transport the water outlet of the filter unit 100 through the second channel of the first switching valve 4 and the heating module 5 to the water outlet part 6. The water outlet part 6 outputs normal temperature water until the water outlet stop operation is received and the first water pump 3 and the filter unit 100 are stopped. In this way, the filter unit 100, the first water pump 3 and the first switching valve 4 cooperate to ensure that the water purifier can reliably provide normal temperature water.

[0132] The hot water dispensing operation can be performed by the user pressing the hot water dispensing button on the water purifier, or by a corresponding touch operation on the human-computer interaction interface. In response to receiving the hot water dispensing operation, the filter unit 100 is activated to produce water, the second channel of the first switching valve 4 is opened and the first channel of the first switching valve 4 is closed, the heating module 5 is activated for heating, and the first water pump 3 is activated to transport the water outlet of the filter unit 100 through the second channel of the first switching valve 4 and the heating module 5 to the water outlet 6, which outputs hot water until a stop water dispensing operation is received, which stops the heating module 5, the first water pump 3, and the filter unit 100. In this way, the filter unit 100, the first water pump 3, the first switching valve 4, and the heating module 5 cooperate to ensure that the water purifier can reliably provide hot water.

[0133] In order to further explain the technical concept of this application, the technical solution of this application is now described in combination with specific application scenarios.

[0134] The embodiment of the present application provides a control method for a water purifier. The structure of the water purifier is as follows: Figure 2 As shown, the control method, refer to Figure 7 and Figure 8 , including the following steps:

[0135] Step S1, power on.

[0136] Step S2, detecting whether the mixing tank 12 is full of water, if so, executing step S10, otherwise executing step S3.

[0137] Step S3, detecting whether the cold water tank 8 is full of water, if so, executing step S4, otherwise executing step S7.

[0138] Step S4, close the water outlet valve 14, open the AC channel of the second switching valve 10 (i.e., the first channel of the second switching valve 10) and close the AB channel (i.e., the second channel of the second switching valve 10), start the second water pump 9, and replenish water to the mixing tank 12 until it is full.

[0139] In step S5, the filter unit 100 is started to produce water, the first water inlet valve 1 and the AC channel of the first switching valve 4 are opened and the AB channel is closed, the second water inlet valve 16 is closed, the first water pump 3 is started, and water is added to the cold water tank 8 until it is full, and the filter unit 100 is stopped.

[0140] Step S6: refrigerate the water in the cold water tank 8 to a first target temperature.

[0141] Step S7, start the filter unit 100 to produce water, open the first water inlet valve 1, open the AC channel of the first switching valve 4 and close the AB channel, close the second water inlet valve 16, start the first water pump 3, replenish water to the cold water tank 8 until it is full, and stop the filter unit 100.

[0142] Step S8: refrigerate the water in the cold water tank 8 to a first target temperature.

[0143] In step S9, the AC channel of the second switching valve 10 is opened and the AB channel is closed. The second water pump 9 is started to transfer the water in the cold water tank 8 to the mixing tank 12, so that the water in the mixing tank 12 is full. At the same time, the filter unit 100 is started to produce water. The AC channel of the first switching valve 4 is opened and the AB channel is closed. The second water inlet valve 16 is closed, and the first water inlet valve is opened. The first water pump 3 is used to replenish water to the cold water tank 8 until it is full. The filter unit 100 is stopped, and the water in the cold water tank 8 is cooled to the first target temperature.

[0144] Step S10 , detecting whether the water temperature in the mixing tank 12 is less than or equal to the second target water temperature, if so, executing step S16 , otherwise executing step S11 .

[0145] Step S11, detecting whether the cold water tank 8 is full of water, if so, executing step S14, otherwise executing step S12.

[0146] In step S12, the filter unit 100 is started to produce water, the first water inlet valve 1 and the AC channel of the first switching valve 4 are opened and the AB channel is closed, the second water inlet valve 16 is closed, the first water pump 3 is started, water is added to the cold water tank 8 until it is full, and the filter unit 100 is stopped.

[0147] Step S13: refrigerate the water in the cold water tank 8 to a first target temperature.

[0148] In step S14, the second water inlet valve 16 is opened, the first water inlet valve 1 is closed, the water outlet valve 14 is closed, the AC channel of the first switching valve 4 is opened and the AB channel is closed, and the AC channel of the second switching valve 10 is opened and the AB channel is closed. The first water pump 3 and the second water pump 9 are started to transfer the water in the cold water tank 8 to the mixing tank 12 to replace the water in the mixing tank 12.

[0149] Step S15: refrigerate the water in the cold water tank 8 to a first target temperature.

[0150] Step S16, standby.

[0151] Put the water purifier into standby mode.

[0152] After the water purifier is powered on, the above-mentioned control method ensures that the mixing tank 12 and the cold water tank 8 are always full of water, and can provide ice water and sparkling water to users at any time; and the pure water in the mixing tank 12 is always maintained at a low temperature, and the sparkling water produced tastes better.

[0153] Refer to the attached Figure 9 In the standby state, when taking water at room temperature, the control method of the water purifier further includes the following steps:

[0154] Step S01, standby.

[0155] Step S02, start the filter unit 100 to produce water, open the first water inlet valve 1, close the second water inlet valve 16, open the AB channel of the first switching valve 4 and close the AC channel, keep the heating module 5 stopped, start the first water pump 3, and normal temperature water flows out from the water outlet 6.

[0156] Step S03, stop.

[0157] Specifically, after receiving the water outlet stop operation, the first water pump 3 and the filter unit 100 are stopped.

[0158] Refer to the attached Figure 10 In the standby state, when hot water is taken, the control method of the water purifier further includes the following steps:

[0159] Step S001, standby.

[0160] Step S002, start the filter unit 100 to produce water, open the first water inlet valve 1, close the second water inlet valve 16, open the AB channel of the first switching valve 4 and close the AC channel, start the heating module 5, start the first water pump 3, and after the room temperature water is heated by the heating module 5, the hot water flows out from the water outlet 6.

[0161] Step S03, stop.

[0162] Specifically, after receiving the water outlet stop operation, the first water pump 3, the filter unit 100 and the heating module 5 are stopped.

[0163] Refer to the attached Figure 11 In the standby state, when taking ice water, the control method of the water purifier further includes the following steps:

[0164] Step S0001, standby.

[0165] Step S0002: Open the AB channel of the second switching valve 10 and close the AC channel. Start the second water pump 9, causing the chilled water stored in the cold water tank 8 to flow out of the water outlet 6. Simultaneously, start the filter unit 100 to produce water. Open the first water inlet valve 1, open the AC channel of the first switching valve 4 and close the AB channel. Close the second water inlet valve 16, start the first water pump 3, replenish the cold water tank 8 with water until it is full, and stop the filter unit 100.

[0166] Step S0003: refrigerate the water in the cold water tank 8 to a first target temperature.

[0167] Step S0004, stop.

[0168] Specifically, upon receiving the water outlet stop operation, the second water pump 9 is stopped.

[0169] Refer to the attached Figure 12 In the standby state, when taking out the sparkling water, the control method of the water purifier further includes the following steps:

[0170] Step S100, standby.

[0171] In step S200, carbon dioxide is injected into the mixing tank 12 from the gas cylinder 11 and the pressure is maintained for a target time. The water outlet valve 14 is then opened, and the bubble water flows out from the water outlet part 6 through the water outlet valve 14. Finally, the water outlet valve 14 is closed.

[0172] Step S300: Open the AC channel and close the AB channel of the second switching valve 10. Start the second water pump 9 to transfer the water in the cold water tank 8 to the mixing tank 12, so that the water in the mixing tank 12 is full.

[0173] In step S400, the filter unit 100 is started to produce water, the AC channel of the first switching valve 4 is opened and the AB channel is closed, the second water inlet valve 16 is closed, the first water inlet valve 1 is opened, the first water pump 3 is used to replenish water to the cold water tank 8 until it is full, and the filter unit 100 is stopped.

[0174] Step S500: refrigerate the water in the cold water tank 8 to a first target temperature.

[0175] Step S600, stop.

[0176] Specifically, when the water outlet stop operation is received, the water outlet valve 14 is closed.

[0177] Refer to the attached Figure 13 When the user does not make sparkling water for a long time, causing the temperature of the pure water in the mixing tank 12 to be higher than the set maximum temperature, the control method of the water purifier includes the following steps:

[0178] Step S1000, standby.

[0179] Step S2000: It is detected that the water temperature in the mixing tank 12 is higher than the second target water temperature.

[0180] In step S3000, the second water inlet valve 16 is opened, the first water inlet valve 1 is closed, the water outlet valve 14 is closed, the AC channel of the first switching valve 4 is opened and the AB channel is closed, and the AC channel of the second switching valve 10 is opened and the AB channel is closed. The first water pump 3 and the second water pump 9 are started to transfer water from the cold water tank 8 to the mixing tank 12 to replace the water in the mixing tank 12.

[0181] Step S4000: refrigerate the water in the cold water tank 8 to a first target temperature.

[0182] Step S5000, stop.

[0183] Specifically, the first water pump 3 and the second water pump 9 are stopped, and the second water inlet valve 16 is closed.

[0184] Through the above control method, when the temperature sensor 17 detects that the water temperature in the mixing tank 12 is higher than the set value, the water stored in the mixing tank 12 is discharged into the cold water tank 8, and the water in the cold water tank 8 is discharged into the mixing tank 12, thereby replacing the higher temperature water in the mixing tank 12 with lower temperature water.

[0185] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk).

[0186] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A control method for a water purifier, characterized in that: include: In response to a power-on instruction, obtaining a first liquid level of a mixing tank of the water purifier, the mixing tank being used to mix water obtained from a cold water tank of the water purifier with carbon dioxide obtained from a gas cylinder of the water purifier to produce sparkling water; When the first liquid level is lower than the first target liquid level and the second liquid level of the cold water tank is lower than the second target liquid level, starting the filter unit of the water purifier to produce water, and delivering the water output from the filter unit to the cold water tank through the first water pump of the water purifier; When the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit, and cooling the water by the cold water tank to reduce the first water temperature of the cold water tank to a first target temperature; delivering the water in the cold water tank to the mixing tank through the second water pump of the water purifier, and stopping the second water pump when the first liquid level reaches the first target liquid level; Starting the filter unit to produce water, and delivering the water output from the filter unit to the cold water tank through the first water pump; when the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit, and cooling the water through the cold water tank to reduce the first water temperature to the first target temperature; The water purifier is put into a standby state.

2. The control method of the water purifier according to claim 1, characterized in that: Before the water purifier is put into a standby state, the method further comprises: obtaining a second water temperature in the mixing tank; When the second water temperature is higher than the second target water temperature and the second liquid level reaches the second target liquid level, closing the first water inlet valve of the water purifier and the water outlet valve of the mixing tank, and opening the second water inlet valve of the water purifier, the first water inlet valve is arranged between the outlet of the filter unit and the inlet of the first water pump, the water outlet valve is arranged at the first outlet of the mixing tank, and the second water inlet valve is arranged between the second outlet of the mixing tank and the outlet of the first water inlet valve; Using the first water pump to transport the water in the mixing tank to the cold water tank, and using the second water pump to transport the water in the cold water tank to the mixing tank, so as to replace the water in the mixing tank; The cold water tank is used for cooling, and when the first water temperature drops to the first target temperature, the first water pump and the second water pump are stopped, and the second water inlet valve is closed.

3. The control method of the water purifier according to claim 2, characterized in that: A negative pressure valve is provided between the outlet of the first water inlet valve and the inlet of the first water pump, the outlet of the second water inlet valve is connected to the inlet of the negative pressure valve, and the water output from the filter unit is delivered to the cold water tank by the first water pump, comprising: The first water inlet valve is opened, and the first water pump is used to sequentially deliver the water output from the filter unit to the cold water tank through the first water inlet valve, the negative pressure valve, and the first water pump.

4. The control method of the water purifier according to claim 1, characterized in that: A first switching valve is provided between the outlet of the first water pump and the cold water tank. The first switching valve includes a first channel and a second channel. The first channel connects the outlet of the first water pump and the cold water tank, and the second channel connects the outlet of the first water pump and the heating module of the water purifier. The water output from the filter unit is delivered to the cold water tank by the first water pump, including: opening a first channel of the first switching valve and closing a second channel of the first switching valve; The first water pump is used to deliver the water output from the filter unit to the cold water tank through the first channel of the first switching valve.

5. The control method of the water purifier according to claim 4, characterized in that: A second switching valve is provided between the second water pump and the mixing tank, the second switching valve including a first channel and a second channel, the first channel of the second switching valve being connected to the outlet of the second water pump and the mixing tank, one end of the second channel of the second switching valve being connected to the outlet of the second water pump, and the other end being connected to the water outlet of the water purifier via a check valve, the water in the cold water tank being transported to the mixing tank by the second water pump of the water purifier comprising: opening the first channel of the second switching valve and closing the second channel of the second switching valve; The water in the cold water tank is transported to the mixing tank by the second water pump through the first channel of the second switching valve.

6. The control method of the water purifier according to claim 5, characterized in that: After the water purifier is put into a standby state, the method further comprises: In response to receiving an ice water outlet operation, opening the second channel of the second switching valve and closing the first channel of the second switching valve; The second water pump is used to transport the water in the cold water tank to the water outlet through the second channel of the second switching valve, and the water outlet outputs chilled water until a stop water discharge operation is received, thereby stopping the second water pump; Starting the filter unit to produce water, opening the first channel of the first switching valve and closing the second channel of the first switching valve, and using the first water pump to transport the water output from the filter unit to the cold water tank through the first channel of the first switching valve; When the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit; The cold water tank is used for cooling, so that the first water temperature is reduced to the first target temperature.

7. The control method of the water purifier according to claim 5, characterized in that: After the water purifier is put into a standby state, the method further comprises: In response to receiving the bubble water discharging operation, injecting carbon dioxide into the mixing tank using the gas cylinder according to the target gas volume and maintaining the pressure; When the pressure holding time reaches the target time, the water outlet valve of the mixing tank is opened, so that the bubble water in the mixing tank reaches the water outlet part through the water outlet valve, and the bubble water is discharged from the water outlet part until the water outlet operation is stopped and the water outlet valve is closed; opening the first channel of the second switching valve and closing the second channel of the second switching valve, using the second water pump to transport water in the cold water tank to the mixing tank through the first channel of the second switching valve, and stopping the second water pump when the first liquid level reaches the first target liquid level; Starting the filter unit to produce water, opening the first channel of the first switching valve and closing the second channel of the first switching valve, and using the first water pump to transport the water output from the filter unit to the cold water tank through the first channel of the first switching valve; When the second liquid level reaches the second target liquid level, stopping the first water pump and the filter unit; The cold water tank is used for cooling, so that the first water temperature is reduced to the first target temperature.

8. The control method of the water purifier according to claim 5, characterized in that: After the water purifier is put into a standby state, the method further comprises: obtaining a second water temperature in the mixing tank; When the second water temperature is higher than the second target water temperature, closing the first water inlet valve of the water purifier and the water outlet valve of the mixing tank, and opening the second water inlet valve of the water purifier, the first water inlet valve is arranged between the outlet of the filter unit and the inlet of the first water pump, the water outlet valve is arranged at the first outlet of the mixing tank, and the second water inlet valve is arranged between the second outlet of the mixing tank and the outlet of the first water inlet valve; Opening the first channel of the first switching valve and closing the second channel of the first switching valve, opening the first channel of the second switching valve and closing the second channel of the second switching valve; Using the first water pump to deliver the water output from the filter unit to the cold water tank via the first channel of the first switching valve; Using the second water pump to deliver the water in the cold water tank to the mixing tank via the first channel of the second switching valve to replace the water in the mixing tank; The cold water tank is used for cooling, and when the first water temperature drops to the first target temperature, the first water pump and the second water pump are stopped, and the second water inlet valve is closed.

9. The control method of the water purifier according to claim 5, characterized in that: After the water purifier is put into a standby state, the method further comprises: In response to receiving a normal temperature water outlet operation, the filter unit is started to produce water, the second channel of the first switching valve is opened and the first channel of the first switching valve is closed, the heating module is kept in a stopped state, and the first water pump is used to transport the outlet water of the filter unit to the water outlet portion through the second channel of the first switching valve and the heating module, and the water outlet portion outputs normal temperature water until a stop water outlet operation is received, and the first water pump and the filter unit are stopped; In response to receiving a hot water outlet operation, the filter unit is started to produce water, the second channel of the first switching valve is opened and the first channel of the first switching valve is closed, the heating module is started, and the first water pump is used to transport the water outlet of the filter unit to the water outlet part through the second channel of the first switching valve and the heating module, and the water outlet part outputs hot water until a water outlet stop operation is received, and the heating module, the first water pump and the filter unit are stopped.

10. A water purifier, characterized in that: The control method of the water purifier according to claim 1 is used for control, and the water purifier includes the mixing tank, the cold water tank, the gas cylinder, the filter unit, the first water pump and the second water pump.

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