Water purifier control methods, control systems, water purifiers and storage media

Abstract

The present invention discloses a control method, a control system, a water purifier and a storage medium for a water purifier. The method obtains the current standing time of the water purifier. If the standing time is greater than a first preset time, the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element are cleaned; if the standing time is greater than a second preset time and less than the first preset time, the water outlet pipe and the cold water pipe are cleaned; if the standing time is less than the second preset time, the water purifier is not cleaned; if the first preset time is greater than the second preset time, the water purifier selects different cleaning modes according to the duration of the power outage to automatically clean the machine, and can also judge the state of the machine before the power outage, and then perform cleaning to different degrees, thereby solving the hygienic problem of excessive bacteria when the machine is used again after a long power outage; the machine is automatically judged and maintained after being powered on, without the need for manual operation, thus reducing the labor cost of maintenance and ensuring the safety and sanitation of water use.

Description

Technical Field

[0001] The present invention relates to the technical field of drinking water equipment, and in particular to a control method and a control system for a water purifier, a water purifier and a storage medium. Background Art

[0002] At present, during holidays, users may not use the water purifier for a long time, and the water purifier does not automatically drain the overnight water, resulting in the water in the water purifier being left for many days, and the bacteria in the water quality exceeding the standard. If the user drinks it directly, it will damage the user's health. If the user directly disinfects the water purifier with high temperature, a whole box of boiling water will enter the sewer pipe, which will scald the sewer pipe; if the water purifier needs technician maintenance, it is difficult to maintain the internal pipes of the machine by manual maintenance, and the cleaning process needs to be supervised by people, the operation and maintenance are not intelligent enough, and the safety and hygiene inside the water purifier cannot be guaranteed, which consumes a large amount of manpower costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the water purifier lacks automatic cleaning inside and the cleaning process easily damages the pipeline, and to provide a control method, control system, water purifier and storage medium for the water purifier.

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

[0005] A control method for a water purifier,

[0006] Get the current standing time of the water purifier;

[0007] If the standing time of the water purifier is greater than a first preset time, cleaning the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element;

[0008] If the standing time of the water purifier is greater than the second preset time and less than the first preset time, the water outlet pipe and the cold water pipe of the water purifier are cleaned;

[0009] If the standing time of the water purifier is less than the second preset time, the water purifier will not be cleaned;

[0010] The first preset time is longer than the second preset time.

[0011] In this solution, the water purifier selects different cleaning modes to automatically clean the machine according to the length of the power outage. It can also judge the state of the machine before the power outage, and then perform different degrees of cleaning, thereby solving the hygiene problem of excessive bacteria when the machine is used again after a long power outage; after the machine is powered on, it automatically judges and maintains, and does not require human operation, thus achieving automation and intelligence, reducing the manpower cost of maintenance, and ensuring the safety and hygiene of water; the water purifier can also automatically select different cleaning methods, avoiding excessive cleaning and inadequate cleaning, saving manpower costs, water and energy.

[0012] Preferably, cleaning the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element further comprises:

[0013] Detecting whether the water level of the hot water tank of the water purifier is lower than a first water level;

[0014] If the water level in the hot water tank is not lower than the first water level, drain the water in the hot water tank and the pressure barrel of the water purifier, and replenish the water in the hot water tank to the second water level before washing;

[0015] If the water level in the hot water tank is lower than the first water level, the water pump, the water inlet valve and the water replenishment valve are opened to replenish the water level in the hot water tank to the second water level before cleaning.

[0016] In this solution, during the cleaning process, after the water heater has been placed for more than the first preset time, the bacteria content in the water purifier is high. Refilling the water in the hot water tank to the second water level can better replenish the hot water that may be needed by the water purifier during the cleaning process in advance, thereby facilitating the automatic cleaning of the water purifier.

[0017] Preferably, the cleaning operation after replenishing the water in the hot water tank to the second water level further comprises:

[0018] The hot water tank generates water vapor, and the hot water tank, the cold water pipe and the water outlet pipe are cleaned by using the water vapor, and then the hot water solenoid valve is opened to clean the faucet;

[0019] Open the cold water solenoid valve, flush the cold water pipeline, and then add water to the hot water tank until it is full;

[0020] Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve, so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

[0021] In this sub-scheme, since the water inlet machine has been placed for a long time, in order to carry out comprehensive disinfection and sterilization of the water purifier, the water vapor generated in the hot water tank is used for high-temperature disinfection and sterilization, which has a good sterilization effect and saves the cost of manual disinfection and sterilization; then fill the hot water tank with cold water to lower the temperature in the hot water tank to prevent the hot water in the hot water tank from scalding the sewer pipe during the discharge process after cleaning is completed; after cleaning, the waste water is discharged into the sewer pipe through the hot water discharge valve, the water pump combination solenoid valve and the cleaning tank valve, thereby completing the cleaning of the water inlet machine.

[0022] Preferably, cleaning the water outlet pipe and the cold water pipe of the water purifier further comprises:

[0023] Open the hot water solenoid valve and clean the hot water outlet pipe;

[0024] Open the cold water solenoid valve and clean the cold water pipeline;

[0025] Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve, so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

[0026] In this solution, when the water purifier automatically discharges water after being stationary for a long period of time, fewer bacteria and viruses are generated in the water inlet machine. The hot water outlet pipe and the cold water pipe are simply cleaned, and the water generated by the cleaning is then discharged. The cleaning process is simple and reliable.

[0027] Preferably, if the standing time of the water purifier is greater than the second preset time and less than the first preset time, it is detected whether the water level in the hot water tank is lower than the first water level;

[0028] If the water level in the hot water tank is not lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the water outlet pipe and the cold water pipe of the water purifier are cleaned including:

[0029] Refill the water in the hot water tank to the third water level, open the hot water solenoid valve, and clean the hot water outlet pipe;

[0030] Open the cold water solenoid valve and clean the cold water pipeline;

[0031] Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve, so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

[0032] In this solution, the water purifier has a shorter static time, during which less bacteria are generated. A simple cleaning operation is required for the purified water inlet, that is, the hot water outlet pipe and the cold water pipe are cleaned, and the cleaned water is discharged into the sewer pipe. It is simple, reliable and practical.

[0033] Preferably, if the water level in the hot water tank is lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the cleaning of the water outlet pipe and the cold water pipe of the water purifier further includes:

[0034] Open the water inlet valve, water pump and wastewater valve, and clean the valve core;

[0035] Open the cold water outlet solenoid valve and clean the cold water pipeline;

[0036] Open the hot water solenoid valve and clean the water outlet pipe.

[0037] In this solution, the stationary time of the water purifier is short, and the water is drained during the stationary period, and the filter element and the cold water pipe and hot water pipe of the water purifier only need to be cleaned.

[0038] Preferably, the control method of the water purifier further includes a drainage operation, and the drainage operation includes:

[0039] obtaining the water temperature in the hot water tank,

[0040] If the water temperature is less than or equal to a first preset temperature threshold, opening the hot water drain valve of the water purifier to drain the water in the hot water tank to the sewer pipe;

[0041] When the water temperature is greater than the first preset temperature threshold and less than the second preset temperature threshold, the water inlet valve, the water pump and the waste water solenoid valve of the water purifier are opened to pump the tap water into the sewer pipe, and the hot water discharge valve is opened to mix the water discharged from the hot water tank with the tap water in the sewer pipe;

[0042] Wherein, the first preset temperature threshold is lower than the second preset temperature threshold.

[0043] Preferably, the drainage operation further comprises:

[0044] Obtaining the water temperature in the hot water tank;

[0045] If the water temperature is greater than the second preset temperature threshold, a cycle of opening the hot water discharge valve for a third preset time period and then closing the hot water discharge valve for a fourth preset time period is executed.

[0046] In this solution, there are different drainage methods for drainage operations in response to the temperatures of different hot water tanks. The temperature of the hot water tank can be handled when draining water at different water temperatures, allowing users to safely drain hot water manually or clean and drain water manually without worrying about the pipes being scalded, thereby ensuring the safety of the sewer pipes. Users can also drain water with one click during use, which is convenient and fast. There is no need for professional personnel to come to the site for operation and maintenance, nor is there any need to take out the drain pipe when draining water, which saves a lot of labor costs and is also convenient for users.

[0047] A control system for a water purifier, the control system comprising:

[0048] A detection module, the detection module is used to obtain the static time of the water purifier;

[0049] A judgment module is used to obtain the static time, compare it with the first preset time and the second preset time set by the system, and output a time judgment signal,

[0050] The control module controls the opening and closing of the water pump and the cold water solenoid valve, the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve in the water purifier according to the time judgment signal.

[0051] In this solution, the water purifier selects different cleaning modes to automatically clean the machine according to the length of the power outage. It can also judge the state of the machine before the power outage, and then perform different degrees of cleaning, thereby solving the hygiene problem of excessive bacteria when the machine is used again after a long power outage; after the machine is powered on, it automatically judges and maintains, and does not require human operation, thus achieving automation and intelligence, reducing the manpower cost of maintenance, and ensuring the safety and hygiene of water; the water purifier can also automatically select different cleaning methods, avoiding excessive cleaning and inadequate cleaning, saving manpower costs, water and energy.

[0052] Preferably, the detection module is used to obtain the water level in the hot water tank.

[0053] The judging module is used to judge the water level of the hot water tank and the first water level and the second water level and output a water level judging signal;

[0054] The control module receives the water level judgment signal and controls the opening and closing of the water pump, the water inlet valve and the water supply valve so that the pressure tank in the water purifier reaches a preset water level.

[0055] In this solution, during the cleaning process, after the water heater has been placed for more than the first preset time, the bacteria content in the water purifier is high. Refilling the water in the hot water tank to the second water level can better replenish the hot water that may be needed by the water purifier during the cleaning process in advance, thereby facilitating the automatic cleaning of the water purifier.

[0056] Preferably, the detection module is used to obtain the water temperature in the hot water tank;

[0057] The judgment module is used to judge whether the water temperature in the hot water tank is greater than the first temperature threshold and the second temperature threshold and output a temperature judgment signal;

[0058] The control module receives the temperature judgment signal to control the opening and closing of the water inlet valve, water pump, waste water solenoid valve and hot water drain valve of the water purifier, so that the drainage operation does not scald the sewer pipe.

[0059] In this solution, there are different drainage methods for drainage operations in response to the temperatures of different hot water tanks. The temperature of the hot water tank can be handled when draining water at different water temperatures, allowing users to safely drain hot water manually or clean and drain water manually without worrying about the pipes being scalded, thereby ensuring the safety of the sewer pipes. Users can also drain water with one click during use, which is convenient and fast. There is no need for professional personnel to come to the site for operation and maintenance, nor is there any need to take out the drain pipe when draining water, which saves a lot of labor costs and is also convenient for users.

[0060] A water purifier comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the control method of the water purifier as described above when executing the computer program.

[0061] A storage medium stores a computer program, which, when executed by a processor, implements the control method of the water purifier as described above.

[0062] Based on the common sense in this field, the above preferred technical solutions can be freely combined to obtain the preferred embodiment of the present application.

[0063] The positive and progressive effects of the present invention are that the water purifier selects different cleaning modes to automatically clean the machine according to the duration of the power outage, and can also judge the state of the machine before the power outage, and then perform cleaning to different degrees, thereby solving the hygienic problem of excessive bacteria when the machine is used again after a long power outage; the machine automatically performs judgment and maintenance after powering on, and does not require manual operation, thus achieving automation and intelligence, reducing the labor cost of maintenance, and ensuring the safety and sanitation of water; the water purifier can also automatically select different cleaning methods, avoiding excessive cleaning and inadequate cleaning, saving labor costs, water and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 This is a main flow chart of the cleaning process of the water purifier according to the first embodiment of the present invention.

[0065] Figure 2 This is a schematic diagram of the cleaning process flow of the water purifier according to the first embodiment of the present invention when the water has been cleaned for a period of time exceeding the first preset time and without draining the water.

[0066] Figure 3 It is a schematic flow chart of the cleaning process of the water purifier in Embodiment 1 of the present invention when the water is drained after exceeding the first preset time.

[0067] Figure 4 This is a schematic flow chart of the cleaning process of the water purifier according to the first embodiment of the present invention between the first preset time and the second preset time without draining water.

[0068] Figure 5 This is a schematic flow chart of a cleaning process of a water purifier according to Embodiment 1 of the present invention between a first preset time and a second preset time and draining water.

[0069] Figure 6 This is the main flow chart of manual drainage of the water purifier according to the second embodiment of the present invention.

[0070] Figure 7 It is a schematic diagram of the drainage control flow of the water purifier according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0071] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0072] Example 1

[0073] A control method for a water purifier, such as Figure 1 As shown, the water purifier obtains the current standing time of the water purifier; if the standing time of the water purifier is greater than the first preset time, the water outlet pipe and cold water pipe of the water purifier and at least one of the hot water tank and the filter element are cleaned; if the standing time of the water purifier is greater than the second preset time and less than the first preset time, the water outlet pipe and cold water pipe of the water purifier are cleaned; if the standing time of the water purifier is less than the second preset time, the water purifier is not cleaned; wherein, the duration of the first preset time is greater than the duration of the second preset time.

[0074] In this embodiment, the first preset time is set to 7 days, and the second preset time is set to 1 day. The water purifier selects different cleaning modes to automatically clean the machine according to the duration of the power outage. It can also judge the state of the machine before the power outage, and then perform cleaning to varying degrees, thereby solving the hygienic problem of excessive bacteria when the machine is used again after a long power outage; after the machine is powered on, it automatically judges and maintains, and does not require manual operation, thus achieving automation and intelligence, reducing the labor cost of maintenance, and ensuring the safety and sanitation of water use; the water purifier can also automatically select different cleaning methods, avoiding excessive cleaning and inadequate cleaning, saving labor costs, and saving water and energy.

[0075] Specifically, Figure 2 , Figure 3 As shown, cleaning the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element also includes:

[0076] Detect whether the water level of the hot water tank of the water purifier is lower than the first water level;

[0077] If the water level in the hot water tank is not lower than the first water level, the water in the hot water tank and the pressure barrel of the water purifier is drained, and the water in the hot water tank is replenished to the second water level before cleaning;

[0078] If the water level in the hot water tank is lower than the first water level, open the water pump, the water inlet valve, and the water replenishment valve to replenish the water level in the hot water tank to the second water level before cleaning.

[0079] In this embodiment, the second water level is a medium water level, and the first water level is a low water level. During the cleaning process, after the water heater has been placed for more than the first preset time, the bacteria content in the water purifier is relatively high. Refilling the water in the hot water tank to the second water level can better replenish the hot water that may be needed by the water purifier during the cleaning process in advance, thereby facilitating the automatic cleaning of the water purifier.

[0080] In other preferred embodiments, the hot water tank or the filter element can be cleaned simultaneously or one of them can be cleaned according to different standing times.

[0081] In a preferred embodiment, Figure 2 As shown, when the water purifier has not been used for more than 7 days but has not been drained, the water in the hot water tank is replenished to the second water level and then the cleaning operation is performed, which also includes:

[0082] Boil the water in the hot water tank, and continue to heat it for one minute to generate steam in the hot water tank. Use the steam to clean the hot water tank, cold water pipes and outlet pipes, and thoroughly sterilize the upper space of the hot water tank. Then open the hot water solenoid valve to clean the faucet, and continue to drain water for 30 seconds before closing it.

[0083] Open the cold water solenoid valve, drain cold water for 1 minute, then close it, flush the cold water pipeline, and then add water to the hot water tank until it is full. This can cool the water in the hot water tank to prevent the sewer pipe from being burned during the discharge process.

[0084] Open the hot water drain valve, water pump combination solenoid valve and cleaning tank valve to allow the hot water and cold water in the pressure barrel to be discharged into the sewer pipe at the same time. This can save time and reduce the risk of scalding to the sewer pipe. After detecting that there is no water level, drain for another 5 minutes, end the drainage, and close the valve and pump.

[0085] Since the water inlet machine has been placed for a long time, in order to carry out comprehensive disinfection and sterilization of the water purifier, the water vapor generated in the hot water tank is used for high-temperature disinfection and sterilization, which has a good sterilization effect and saves the cost of manual disinfection and sterilization; then fill the hot water tank with cold water to lower the temperature in the hot water tank to prevent the hot water in the hot water tank from scalding the sewer pipe during the discharge process after cleaning; after cleaning, the waste water is discharged into the sewer pipe through the hot water discharge valve, the water pump combination solenoid valve and the cleaning box valve, thus completing the cleaning of the water inlet machine.

[0086] In a preferred embodiment, Figure 3As shown, if the water purifier has not been used for more than 7 days, but the water has been drained, the water outlet pipe and cold water pipe of the water purifier should be cleaned including:

[0087] Turn on the water pump, water inlet valve, and water supply valve to start producing water and fill the hot water tank to the middle water level.

[0088] Open the hot water solenoid valve and drain water for 30 seconds to clean the residual water in the hot water outlet pipe;

[0089] Open the cold water solenoid valve and drain water for 1 minute to clean the residual water in the cold water pipeline;

[0090] Open the hot water drain valve, water pump combination solenoid valve and cleaning tank valve, so that the hot water and cold water in the pressure barrel are discharged into the sewer pipe at the same time, saving drainage time. When no water level is detected, drain for another 5 minutes, end the drainage, and close the valve and pump.

[0091] Specifically, when the water purifier automatically discharges water after being stationary for a long period of time, there are fewer bacteria and viruses generated in the water inlet machine. Simply clean the hot water outlet pipe and the cold water pipe, and then discharge the water generated by cleaning. The cleaning process is simple and reliable.

[0092] In a preferred embodiment, Figure 4 As shown, if the standing time of the water purifier is greater than the second preset time and less than the first preset time, it is detected whether the water level in the hot water tank is lower than the first water level;

[0093] If the water level in the hot water tank is not lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned. The cleaning operation of the water outlet pipe and the cold water pipe of the water purifier includes:

[0094] Refill the water in the hot water tank to the third water level, open the hot water solenoid valve, drain the water for 30 seconds, and clean the residual water in the hot water outlet pipe; the third water level is the low water level;

[0095] Open the cold water solenoid valve and drain water for 1 minute to clean the remaining water in the cold water pipeline;

[0096] Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve, so that the hot water and the cold water in the pressure tank are discharged into the sewer pipe at the same time. When no water level is detected, drain for another 5 minutes, end the drainage, and close the valve and pump.

[0097] The water purifier has a short standing time and produces fewer bacteria during this period. A simple cleaning operation is required for the purified water inlet, that is, the hot water outlet pipe and the cold water pipe are cleaned, and the cleaned water is discharged into the sewer pipe. It is simple, reliable and practical.

[0098] In a preferred embodiment, Figure 5As shown, if the water level in the hot water tank is lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the cleaning of the water outlet pipe and the cold water pipe of the water purifier also includes:

[0099] Open the water inlet valve, water pump and wastewater valve, and clean the valve core for 1 minute;

[0100] Open the cold water outlet solenoid valve and drain water for 30 seconds to clean the cold water pipeline and drain the residual water in the pipeline;

[0101] Open the hot water solenoid valve, drain water for 10 seconds, clean the water outlet pipe, and drain the residual water in the pipe.

[0102] The water purifier has a short standing time and is drained during the standing time. The filter element, cold water pipes and hot water pipes of the water purifier only need to be cleaned.

[0103] This embodiment also provides a control system for a water purifier, the control system comprising:

[0104] A detection module, which is used to obtain the static time of the water purifier;

[0105] A judgment module is used to obtain the static time, compare it with the first preset time and the second preset time set by the system, and output a time judgment signal,

[0106] The control module controls the opening and closing of the water pump and cold water solenoid valve, hot water drain valve, water pump combination solenoid valve and cleaning tank valve in the water purifier according to the time judgment signal.

[0107] Specifically, the water purifier selects different cleaning modes to automatically clean the machine according to the length of the power outage. It can also judge the state of the machine before the power outage, and then perform cleaning to varying degrees, thereby solving the hygiene problem of excessive bacteria when the machine is used again after a long power outage. After the machine is powered on, it automatically performs judgment and maintenance, and does not require manual operation, thus achieving automation and intelligence, reducing the manpower cost of maintenance, and ensuring the safety and hygiene of water use. The water purifier can also automatically select different cleaning methods, avoiding excessive cleaning and inadequate cleaning, saving manpower costs, and saving water and energy.

[0108] In a preferred embodiment, the detection module is used to obtain the water level in the hot water tank.

[0109] The judgment module is used to judge the water level of the hot water tank and the size of the first water level and the second water level and output a water level judgment signal; the control module receives the water level judgment signal and controls the opening and closing of the water pump, the water inlet valve and the water supply valve so that the pressure tank in the water purifier reaches the preset water level.

[0110] During the cleaning process, after the water heater has been placed for more than the first preset time, the bacteria content in the water purifier is high. Refilling the water in the hot water tank to the second water level can better replenish the hot water that may be needed by the water purifier during the cleaning process in advance, thereby facilitating the automatic cleaning of the water purifier.

[0111] This embodiment also provides a water purifier, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and is characterized in that the control method of the water purifier as described above is implemented when the processor executes the computer program.

[0112] This embodiment also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the control method of the water purifier as described above is implemented.

[0113] Example 2

[0114] This embodiment provides a control method for a water purifier, which also includes a drainage operation, such as Figure 7 As shown, the drainage operation includes:

[0115] Get the water temperature in the hot water tank,

[0116] If the water temperature is less than or equal to the first preset temperature threshold, open the hot water drain valve of the water purifier to drain the water in the hot water tank to the sewer pipe;

[0117] When the water temperature is greater than the first preset temperature threshold and less than the second preset temperature threshold, the water inlet valve, water pump and waste water solenoid valve of the water purifier are opened to pump tap water into the sewer pipe, and the hot water drain valve is opened to allow the water discharged from the hot water tank to mix with the tap water in the sewer pipe. The first preset temperature threshold is less than the second preset temperature threshold.

[0118] Specifically, the drainage operation also includes:

[0119] Get the water temperature in the hot water tank; if the water temperature is greater than the second preset temperature threshold, execute a cycle of opening the hot water drain valve for a third preset time and then closing the hot water drain valve for a fourth preset time.

[0120] In this embodiment, the first preset temperature threshold is set to 60° C., the second preset temperature threshold is set to 80° C., the third preset time is set to 10 seconds, and the fourth preset time is set to 10 seconds.

[0121] Specifically, for the drainage operation, there are different drainage methods to deal with the temperatures of different hot water tanks, and the temperatures of different water temperatures when draining from the hot water tank can be handled, so that users can safely drain hot water manually or clean and drain manually without worrying about the pipes being scalded, so that the safety of the sewer pipes is guaranteed. Users can also drain the water with one click during use, which is convenient and fast. There is no need for professional personnel to come to the site for operation and maintenance, nor is there any need to take out the drain pipe when draining, which saves a lot of labor costs and is also convenient for users.

[0122] The present embodiment also provides a control system, which includes a detection module, a judgment module and a control module. The detection module is used to obtain the water temperature in the hot water tank; the judgment module is used to judge the difference between the water temperature in the hot water tank and the first temperature threshold and the second temperature threshold and output a temperature judgment signal; the control module receives the temperature judgment signal to control the opening and closing of the water inlet valve, water pump, waste water solenoid valve and hot water drain valve of the water purifier, so that the drainage operation will not scald the sewer pipe.

[0123] In this system, there are different drainage methods for drainage operations in response to the temperatures of different hot water tanks. The temperature of the hot water tank can be handled when draining water at different water temperatures, allowing users to safely drain hot water manually or clean and drain water manually without worrying about the pipes being scalded, thereby ensuring the safety of the sewer pipes. Users can also drain water with one click during use, which is convenient and fast. There is no need for professional personnel to come to the site for operation and maintenance, nor is there any need to take out the drain pipe when draining water, which saves a lot of labor costs and is also convenient for users.

[0124] The drainage operation is performed according to the water temperature of the hot water tank in the water purifier to prevent the hot water from scalding the sewer pipe. The control method also includes, for example, Figure 6 , Figure 7 As shown, in response to the user's drainage instruction, the water pressure of the water inlet is obtained, and whether the water pressure of the water inlet is normal when no one is drawing water; if the water pressure is abnormal, a prompt is given to open the water inlet valve; if the water pressure is normal, drainage is performed according to the water temperature of the hot water tank to avoid hot water scalding the sewer pipes, and drainage is stopped when the conditions for stopping drainage are met.

[0125] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention 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 invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for controlling a water purifier, characterized in that: Get the current standing time of the water purifier; If the standing time of the water purifier is greater than a first preset time, cleaning the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element; If the standing time of the water purifier is greater than the second preset time and less than the first preset time, the water outlet pipe and the cold water pipe of the water purifier are cleaned; If the standing time of the water purifier is less than the second preset time, the water purifier will not be cleaned; Wherein, the duration of the first preset time is greater than the duration of the second preset time; Cleaning the water outlet pipe and the cold water pipe of the water purifier and at least one of the hot water tank and the filter element also includes: Detecting whether the water level of the hot water tank of the water purifier is lower than a first water level; If the water level in the hot water tank is not lower than the first water level, drain the water in the hot water tank and the pressure barrel of the water purifier, and replenish the water in the hot water tank to the second water level before washing; If the water level in the hot water tank is lower than the first water level, the water pump, the water inlet valve and the water replenishment valve are opened to replenish the water level in the hot water tank to the second water level before cleaning.

2. The control method of the water purifier according to claim 1, characterized in that: The cleaning operation after the water in the hot water tank is replenished to the second water level also includes: The hot water tank generates water vapor, and the hot water tank, the cold water pipe and the water outlet pipe are cleaned by using the water vapor, and then the hot water solenoid valve is opened to clean the faucet; Open the cold water solenoid valve, flush the cold water pipeline, and then add water to the hot water tank until it is full; Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

3. The control method of the water purifier according to claim 1, characterized in that: Cleaning the water outlet pipe and the cold water pipe of the water purifier also includes: Open the hot water solenoid valve and clean the hot water outlet pipe; Open the cold water solenoid valve and clean the cold water pipeline; Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

4. The control method of the water purifier according to claim 1, characterized in that: If the standing time of the water purifier is greater than the second preset time and less than the first preset time, detecting whether the water level in the hot water tank is lower than the first water level; If the water level in the hot water tank is not lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the water outlet pipe and the cold water pipe of the water purifier are cleaned including: Refill the water in the hot water tank to the third water level, open the hot water solenoid valve, and clean the hot water outlet pipe; Open the cold water solenoid valve and clean the cold water pipeline; Open the hot water drain valve, the water pump combination solenoid valve and the cleaning tank valve so that the hot water and the cold water in the pressure barrel are discharged into the sewer pipe at the same time.

5. The control method of the water purifier according to claim 4, characterized in that: If the water level in the hot water tank is lower than the first water level, the water outlet pipe and the cold water pipe of the water purifier are cleaned, and the water outlet pipe and the cold water pipe of the water purifier are cleaned further comprising: Open the water inlet valve core, water pump and wastewater valve, and clean the valve core; Open the cold water outlet solenoid valve and clean the cold water pipeline; Open the hot water solenoid valve and clean the water outlet pipe.

6. The control method of the water purifier according to claim 1, characterized in that: The control method of the water purifier further includes a drainage operation, and the drainage operation includes: obtaining the water temperature in the hot water tank, If the water temperature is less than or equal to a first preset temperature threshold, opening the hot water drain valve of the water purifier to drain the water in the hot water tank to the sewer pipe; When the water temperature is greater than the first preset temperature threshold and less than the second preset temperature threshold, the water inlet valve, the water pump and the waste water solenoid valve of the water purifier are opened to pump the tap water into the sewer pipe, and the hot water discharge valve is opened to mix the water discharged from the hot water tank with the tap water in the sewer pipe; Wherein, the first preset temperature threshold is lower than the second preset temperature threshold.

7. The control method of the water purifier according to claim 6, characterized in that: The drainage operation also includes: Obtaining the water temperature in the hot water tank; If the water temperature is greater than the second preset temperature threshold, a cycle of opening the hot water discharge valve for a third preset time period and then closing the hot water discharge valve for a fourth preset time period is executed.

8. A control system for a water purifier, characterized in that: The control system is used to implement the control method of the water purifier according to claim 1, and the control system includes: A detection module, the detection module is used to obtain the static time of the water purifier; A judgment module is used to obtain the static time, compare it with the first preset time and the second preset time set by the system, and output a time judgment signal, A control module controls the opening and closing of a water pump and a cold water solenoid valve, a hot water drain valve, a water pump combination solenoid valve, and a cleaning tank valve in the water purifier according to the time judgment signal; The detection module is used to obtain the water level in the hot water tank. The judging module is used to judge the water level of the hot water tank and the first water level and the second water level and output a water level judging signal; The control module receives the water level judgment signal and controls the opening and closing of the water pump and the water inlet valve and the water supply valve so that the pressure tank in the water purifier reaches a preset water level.

9. The control system according to claim 8, characterized in that: The detection module is used to obtain the water temperature in the hot water tank; The judgment module is used to judge whether the water temperature in the hot water tank is greater than the first temperature threshold and the second temperature threshold and output a temperature judgment signal; The control module receives the temperature judgment signal to control the opening and closing of the water inlet valve, water pump, waste water solenoid valve and hot water drain valve of the water purifier, so that the drainage operation does not scald the sewer pipe.

10. A water purifier, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the control method of the water purifier described in any one of claims 1 to 7 is implemented.

11. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the water purifier according to any one of claims 1 to 7 is implemented.

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