Water purifier, control method, system and medium for water temperature of water purifier

Abstract

The application discloses a water purifier, a water purifier outlet water temperature control method and system, and a medium, and the water purifier comprises a first filtering device, a heat exchange device and a heating device, the heat exchange device comprises a hot water pipeline, a waste water pipeline and a purified water pipeline, and the hot water pipeline is arranged between the waste water pipeline and the purified water pipeline. The application utilizes waste water in the waste water pipeline and purified water in the purified water pipeline to simultaneously cool hot water in the hot water pipeline, increases the water volume of the cold water available for heat exchange, and reduces the minimum value of the water purifier outlet water temperature; the opening of the first adjustable valve is adjusted to control the purified water flow participating in the heat exchange; the opening of the second adjustable valve is adjusted to control the waste water flow participating in the heat exchange; because the purified water flow and the waste water flow participating in the heat exchange can be adjusted, the control of the flow of the cold water flowing into the heat exchange device to participate in the heat exchange is more flexible, and therefore the sensitivity of the control of the water purifier outlet water temperature is improved.

Description

Technical Field

[0001] This invention relates to the field of water purifiers, specifically to a water purifier, a method, system, and medium for controlling the outlet water temperature of the water purifier. Background Technology

[0002] As water purification products become increasingly common in homes, standalone purification functions are no longer sufficient for some users, who desire heating capabilities. Users have varying temperature requirements depending on the application; for example, brewing tea or coffee requires around 90°C hot water, while drinking directly requires around 45°C warm water. Furthermore, many users prefer warm water and are not satisfied with simply heating the purified water to their desired temperature in the purifier. They want the water to boil and then cool to the desired temperature – in other words, they want a warm water function in their purifier.

[0003] Currently, there are water purifiers on the market with warm water functions. However, when the inlet water temperature is very low or very high compared to room temperature, the temperature of the warm water produced by these purifiers deviates significantly from the user's set outlet temperature, failing to meet user needs. Therefore, how to achieve precise control of the outlet temperature of the warm water produced by the water purifier has become an urgent problem to be solved in the water purifier industry. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect that the temperature of the warm water produced by the water purifier with the warm water function in the prior art deviates greatly from the temperature of the water output set by the user, and thus fails to meet the user's needs. The present invention provides a water purifier, a method, system and medium for controlling the water output temperature of the water purifier.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This invention provides a water purifier, which includes an inlet end, an outlet end, a first filter device, a heat exchange device, a heating device, a one-way valve, a water pump, a first switch valve, a first adjustable valve, and a second adjustable valve. The heat exchange device includes a hot water pipe, a wastewater pipe, and a purified water pipe, with the hot water pipe disposed between the wastewater pipe and the purified water pipe.

[0007] The water inlet is connected to the water inlet of the first filter device via the water pump.

[0008] The wastewater outlet of the first filter device is connected to the inlet of the first filter device through the second adjustable valve, the check valve and the water pump, and is also connected to the inlet of the wastewater pipe through the first switching valve.

[0009] The water outlet of the first filter device is connected to the water inlet of the water purification pipe, and is also connected to the water inlet of the heating device through the first adjustable valve.

[0010] The outlet of the water purification pipe is connected to the inlet of the heating device, and the inlet of the hot water pipe is connected to the outlet of the heating device.

[0011] The water outlet is connected to the outlet of the hot water pipe.

[0012] Optionally, the water purifier further includes a wastewater outlet and a second switching valve;

[0013] The wastewater outlet is connected to the wastewater outlet of the first filter device via the second switch valve, and also to the outlet of the wastewater pipe.

[0014] Optionally, the water purifier further includes a second filter device and a third switch valve, with the water inlet end connected to the water inlet of the second filter device;

[0015] The outlet of the second filter device is connected to the inlet of the first filter device via the third switching valve; and / or,

[0016] The water purifier also includes a third filtration device, and the water outlet of the first filtration device is connected to the water inlet of the water purification pipe through the third filtration device.

[0017] Optionally, the water purifier further includes a wastewater solenoid valve, and the wastewater outlet of the first filter device is connected to the first switching valve and the second switching valve respectively through the wastewater solenoid valve.

[0018] The present invention also provides a method for controlling the outlet water temperature of a water purifier, the method being implemented using the aforementioned water purifier, the method comprising:

[0019] Detect the actual water temperature at the outlet of the hot water pipe;

[0020] If the actual outlet water temperature does not reach the target outlet water temperature, the opening of the first adjustable valve is adjusted according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

[0021] Optionally, the control method further includes:

[0022] If the opening of the first adjustable valve is at its minimum and the actual outlet water temperature has not reached the target outlet water temperature, then the opening of the first adjustable valve remains unchanged, and the opening of the second adjustable valve is adjusted according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

[0023] Optionally, the water purifier further includes a wastewater outlet and a second switching valve; the wastewater outlet is connected to the wastewater outlet of the first filter device via the second switching valve, and also to the outlet of the wastewater pipe; the control method further includes:

[0024] Detect the water quality parameters at the inlet of the first filtration device;

[0025] Determine whether the water quality parameters meet the target water quality parameters.

[0026] If not, then control the second switching valve to open and control the second adjustable valve to close;

[0027] If so, then control the second switching valve to close.

[0028] The present invention also provides a control system for the outlet water temperature of a water purifier, the control system being implemented using the aforementioned water purifier, the control system comprising:

[0029] The detection module is used to detect the actual water temperature at the outlet of the hot water pipe;

[0030] The judgment module, in response to the actual outlet water temperature not reaching the target outlet water temperature, calls the adjustment module to adjust the opening degree of the first adjustable valve according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

[0031] The present invention also provides a water purifier, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the aforementioned method for controlling the outlet water temperature of the water purifier.

[0032] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the aforementioned method for controlling the outlet water temperature of a water purifier.

[0033] The positive and progressive effects of this invention are as follows: By simultaneously cooling the hot water in the hot water pipe using wastewater from the wastewater pipe and purified water from the purified water pipe, the amount of cold water available for heat exchange is increased, thus reducing the minimum outlet temperature of the water purifier; by adjusting the opening of the first adjustable valve, the flow rate of purified water directly flowing into the heating device is controlled, thereby controlling the flow rate of purified water participating in heat exchange; by adjusting the opening of the second adjustable valve, the flow rate of wastewater returning to the first filtration device is controlled, thereby controlling the flow rate of wastewater participating in heat exchange; because the flow rates of purified water and wastewater participating in heat exchange can be adjusted, the control of the flow rate of cold water flowing into the heat exchange device for heat exchange is more flexible, thereby improving the sensitivity of the water purifier's outlet temperature control. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a water purifier provided in Embodiment 1 of the present invention.

[0035] Figure 2 A flowchart of a method for controlling the outlet water temperature of a water purifier provided in Embodiment 2 of the present invention.

[0036] Figure 3 This is a schematic diagram of the control system for the outlet water temperature of a water purifier provided in Embodiment 3 of the present invention.

[0037] Figure 4 This is a schematic diagram of the structure of a water purifier provided in Embodiment 4 of the present invention. Detailed Implementation

[0038] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0039] Example 1

[0040] This embodiment provides a water purifier, such as... Figure 1 As shown, the water purifier includes an inlet 111, an outlet 112, a first filter 113, a heat exchange device 114, a heating device 115, a one-way valve 116, a water pump 117, a first on / off valve 118, a first adjustable valve 119, and a second adjustable valve 120. The heat exchange device 114 includes a hot water pipe 1141, a wastewater pipe 1142, and a purified water pipe 1143, with the hot water pipe 1141 positioned between the wastewater pipe 1142 and the purified water pipe 1143. Specifically, the heat exchange device can be made of stainless steel, and the filter element of the first filter 113 is a membrane filter element, which can be an RO (Reverse Osmosis) membrane, a nanofiltration membrane, or an ultrafiltration membrane, etc.

[0041] The inlet 111 is connected to the inlet of the first filter device 113 via the water pump 117; the wastewater outlet of the first filter device 113 is connected to the inlet of the first filter device 113 via the second adjustable valve 120, the check valve 116, and the water pump 117, and is also connected to the inlet of the wastewater pipe via the first switch valve 118; the clean water outlet of the first filter device 113 is connected to the inlet of the clean water pipe, and is also connected to the inlet of the heating device 115 via the first adjustable valve 119; the outlet of the clean water pipe 1143 is connected to the inlet of the heating device 115, and the inlet of the hot water pipe 1141 is connected to the outlet of the heating device 115; the outlet 112 is connected to the outlet of the hot water pipe 1141.

[0042] Specifically, the check valve ensures that wastewater flowing out of the wastewater outlet of the first filtration device flows unidirectionally into the inlet of the first filtration device through the second adjustable valve. The second adjustable valve and the check valve constitute a wastewater return channel. The first and second adjustable valves can automatically adjust their opening degrees based on control algorithms such as PID control and genetic algorithms, thereby regulating the wastewater flow rate and the purified water flow rate. The adjustable opening range of the first and second adjustable valves can be 0–1000 mL / min. Water in the purified water pipeline and the wastewater pipeline exchange heat with water in the hot water pipeline through a heat exchange structure.

[0043] In one alternative implementation, such as Figure 1 As shown, the water purifier also includes a wastewater outlet 121 and a second switch valve 122; the wastewater outlet 121 is connected to the wastewater outlet of the first filter device 113 through the second switch valve 122, and is also connected to the outlet of the wastewater pipe 1142.

[0044] In one alternative implementation, such as Figure 1 As shown, the water purifier also includes a second filter device 123 and a third switching valve 124. The inlet end is connected to the inlet of the second filter device 123; the outlet of the second filter device 123 is connected to the inlet of the first filter device 113 through the third switching valve 124. Specifically, the second filter device 123 is used for pre-filtration, and the filter element can be a PP cotton (Polypropylene) filter element or a granular activated carbon filter element, etc.

[0045] In one alternative implementation, such as Figure 1 As shown, the water purifier also includes a third filtration device 125, and the purified water outlet of the first filtration device 113 is connected to the inlet of the purified water pipe 1143 through the third filtration device 125. Specifically, the third filtration device 125 is for post-filtration, and the filter element can be a granular activated carbon filter element or an ultrafiltration filter element, etc.

[0046] In one alternative implementation, such as Figure 1 As shown, the water purifier also includes a second filter device 123, a third switching valve 124, and a third filter device 125. The inlet end is connected to the inlet of the second filter device 123; the outlet of the second filter device 123 is connected to the inlet of the first filter device 113 via the third switching valve 124; and the purified water outlet of the first filter device 113 is connected to the inlet of the purified water pipe 1143 via the third filter device 125. Specifically, the second filter device 123 is for pre-filtration, and the filter element can be a PP cotton filter element or a granular activated carbon filter element, etc.; the third filter device 125 is for post-filtration, and the filter element can be a granular activated carbon filter element or an ultrafiltration filter element, etc.

[0047] In one alternative implementation, such as Figure 1As shown, the water purifier also includes a wastewater solenoid valve 126. The wastewater outlet of the first filter device 113 is connected to the first switching valve 118 and the second switching valve 122 through the wastewater solenoid valve 126.

[0048] In one alternative implementation, such as Figure 1 As shown, the first adjustable valve 119 is connected to the water inlet of the heating device 115 through the second check valve 127.

[0049] In this embodiment, the water purifier uses both wastewater from the wastewater pipe and purified water from the purified water pipe to simultaneously cool the hot water in the hot water pipe, increasing the amount of cold water available for heat exchange and lowering the minimum outlet temperature of the water purifier. By adjusting the opening of the first adjustable valve, the flow rate of purified water directly flowing into the heating device is controlled, thereby controlling the flow rate of purified water participating in heat exchange. By adjusting the opening of the second adjustable valve, the flow rate of wastewater returning to the first filtration device is controlled, thereby controlling the flow rate of wastewater participating in heat exchange. Because the flow rates of purified water and wastewater participating in heat exchange can be adjusted, the control of the flow rate of cold water flowing into the heat exchange device for heat exchange is more flexible, thereby improving the sensitivity of the water purifier's outlet temperature control.

[0050] Example 2

[0051] This embodiment provides a method for controlling the outlet water temperature of a water purifier. This control method is implemented using a water purifier as described in Embodiment 1. Figure 2 As shown, the control method includes:

[0052] S201. Detect the actual water temperature at the outlet of the hot water pipe.

[0053] S202. Determine whether the actual outlet water temperature has reached the target outlet water temperature; if yes, repeat step S201; if no, proceed to step S203.

[0054] S203. Adjust the opening of the first adjustable valve according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

[0055] Specifically, in step S203, the opening of the first adjustable valve can be automatically adjusted based on control algorithms such as PID control and genetic algorithms. Before step S201, in order to make the actual outlet water temperature detected in step S201 close to the target outlet water temperature and shorten the time for adjusting the opening of the first adjustable valve in step S202, the opening of the first adjustable valve can be pre-adjusted. The pre-adjustment method can be as follows: query the outlet water temperature and first adjustable valve opening table, obtain the corresponding first adjustable valve opening according to the target outlet water temperature, and adjust the opening of the first adjustable valve to the corresponding first adjustable valve opening; wherein, the outlet water temperature and first adjustable valve opening table includes the correspondence between different outlet water temperatures and different first adjustable valve openings.

[0056] In one optional implementation, to ensure that as much wastewater as possible flows into the wastewater return channel from the wastewater outlet of the first filter device, as little wastewater as possible flows out of the wastewater outlet of the water purifier, and as much purified water as possible flows out of the water purifier's outlet, the control method further includes: if the opening of the first adjustable valve is at its minimum and the actual outlet water temperature has not reached the target outlet water temperature, then the opening of the first adjustable valve remains unchanged, and the opening of the second adjustable valve is adjusted according to the temperature difference between the actual outlet water temperature and the target outlet water temperature. Specifically, the opening of the second adjustable valve can be automatically adjusted based on control algorithms such as PID control algorithms and genetic algorithms.

[0057] In one optional embodiment, the water purifier further includes a wastewater outlet and a second switching valve. The wastewater outlet is connected to the wastewater outlet of the first filter device and the outlet of a wastewater pipe via the second switching valve. The control method further includes: detecting water quality parameters at the inlet of the first filter device; determining whether the water quality parameters meet the target water quality parameters; if not, controlling the second switching valve to open and controlling the second adjustable valve to close; if yes, controlling the second switching valve to close. Specifically, the water quality parameters may include ion concentration parameters. After long-term use of the water purifier, the ion concentration of the water before the inlet of the first filter device becomes increasingly higher. By controlling the second switching valve to open and controlling the second adjustable valve to close, the ion concentration of the water before the inlet of the first filter device is brought back to a normal level.

[0058] The control method in this embodiment utilizes wastewater from the wastewater pipe and purified water from the purified water pipe to simultaneously cool the hot water in the hot water pipe, increasing the amount of cold water available for heat exchange and lowering the minimum outlet temperature of the water purifier. By adjusting the opening of the first adjustable valve, the flow rate of purified water directly flowing into the heating device is controlled, thereby controlling the flow rate of purified water participating in heat exchange. By adjusting the opening of the second adjustable valve, the flow rate of wastewater returning to the first filtration device is controlled, thereby controlling the flow rate of wastewater participating in heat exchange. Because the flow rates of purified water and wastewater participating in heat exchange can be adjusted, the control of the flow rate of cold water flowing into the heat exchange device for heat exchange is more flexible, thereby improving the sensitivity of the control over the outlet temperature of the water purifier.

[0059] Example 3

[0060] This embodiment provides a control system 30 for the outlet water temperature of a water purifier, such as... Figure 3 As shown, the control system 30 includes a detection module 31 and a judgment module 32.

[0061] The detection module is used to detect the actual water temperature at the outlet of the hot water pipe.

[0062] If the judgment module detects that the actual outlet water temperature has not reached the target outlet water temperature, it calls the adjustment module to adjust the opening of the first adjustable valve based on the temperature difference between the actual outlet water temperature and the target outlet water temperature.

[0063] Specifically, in the judgment module, the opening of the first adjustable valve can be automatically adjusted based on control algorithms such as PID control and genetic algorithms. To ensure that the actual outlet water temperature detected by the detection module is close to the target outlet water temperature and to shorten the time required for the judgment module to adjust the opening of the first adjustable valve, the control system may also include a pre-adjustment module. This pre-adjustment module is used to pre-adjust the opening of the first adjustable valve. Specifically, it can query a table of outlet water temperature and first adjustable valve opening, obtain the corresponding first adjustable valve opening based on the target outlet water temperature, and adjust the opening of the first adjustable valve to the corresponding opening. The table of outlet water temperature and first adjustable valve opening includes the correspondence between different outlet water temperatures and different first adjustable valve openings.

[0064] In one optional implementation, to ensure that as much wastewater as possible flows into the wastewater return channel from the wastewater outlet of the first filter, as little wastewater as possible flows out of the wastewater outlet of the water purifier, and as much purified water as possible flows out of the water purifier's outlet, the control system further includes an adjustment module. Responding to the first adjustable valve's minimum opening and the actual outlet water temperature not reaching the target outlet water temperature, the adjustment module maintains the first adjustable valve's opening constant and adjusts the second adjustable valve's opening based on the temperature difference between the actual outlet water temperature and the target outlet water temperature. Specifically, the adjustment module can automatically adjust the second adjustable valve's opening based on control algorithms such as PID control algorithms and genetic algorithms.

[0065] In one optional embodiment, the water purifier further includes a wastewater outlet and a second switching valve. The wastewater outlet is connected to the wastewater outlet of the first filter device and the outlet of the wastewater pipe via the second switching valve. The control system also includes a water quality adjustment module for detecting water quality parameters at the inlet of the first filter device; determining whether the water quality parameters meet the target water quality parameters; if not, controlling the second switching valve to open and the second adjustable valve to close; if yes, controlling the second switching valve to close. Specifically, the water quality parameters may include ion concentration parameters. After long-term use of the water purifier, the ion concentration of the water before the inlet of the first filter device becomes increasingly higher. By controlling the second switching valve to open and the second adjustable valve to close, the ion concentration of the water before the inlet of the first filter device is brought back to a normal level.

[0066] In this embodiment, the control system utilizes both wastewater from the wastewater pipe and purified water from the purified water pipe to simultaneously cool the hot water in the hot water pipe, increasing the amount of cold water available for heat exchange and lowering the minimum outlet temperature of the water purifier. By adjusting the opening of the first adjustable valve, the flow rate of purified water directly flowing into the heating device is controlled, thereby controlling the flow rate of purified water participating in heat exchange. By adjusting the opening of the second adjustable valve, the flow rate of wastewater returning to the first filtration device is controlled, thereby controlling the flow rate of wastewater participating in heat exchange. Because the flow rates of purified water and wastewater participating in heat exchange can be adjusted, the control of the flow rate of cold water flowing into the heat exchange device for heat exchange is more flexible, thereby improving the sensitivity of the control over the outlet temperature of the water purifier.

[0067] Example 4

[0068] Figure 4 This is a schematic diagram of a water purifier according to Embodiment 4 of the present invention. It includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the water purifier outlet temperature control method described in Embodiment 2 above. Figure 4 The water purifier 40 shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0069] The water purifier 40 can be represented as a general-purpose computing device, such as a server device. The components of the water purifier 40 may include, but are not limited to: at least one processor 41, at least one memory 42, and a bus 43 connecting different system components (including memory 42 and processor 41).

[0070] Bus 43 includes a data bus, an address bus, and a control bus.

[0071] The memory 42 may include volatile memory, such as random access memory (RAM) 421 and / or cache memory 422, and may further include read-only memory (ROM) 423.

[0072] The memory 42 may also include a program / utility 425 having a set (at least one) of program modules 424, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0073] The processor 41 executes various functional applications and data processing by running computer programs stored in the memory 42, such as the water purifier outlet temperature control method of Embodiment 2 of the present invention.

[0074] The water purifier 40 can also communicate with one or more external devices 44 (e.g., keyboard, pointing device, etc.). This communication can be made through the input / output (I / O) interface 45. Furthermore, the model-generated water purifier 40 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via a network adapter 46. As shown, the network adapter 46 communicates with other modules of the model-generated water purifier 40 via a bus 43. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated water purifier 40, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0075] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0076] Example 5

[0077] The present invention also provides a computer-readable medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method for controlling the outlet water temperature of the water purifier in the aforementioned embodiment 2.

[0078] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0079] In a possible implementation, the present invention can also be implemented as a program product comprising program code, which, when the program product is run on a terminal device, is used to cause the terminal device to execute the water purifier outlet water temperature control method of Embodiment 2.

[0080] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0081] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A water purifier, characterized in that, The water purifier includes an inlet end, an outlet end, a first filter device, a heat exchange device, a heating device, a one-way valve, a water pump, a first switch valve, a first adjustable valve, and a second adjustable valve. The heat exchange device includes a hot water pipe, a wastewater pipe, and a purified water pipe, with the hot water pipe located between the wastewater pipe and the purified water pipe. The water inlet is connected to the water inlet of the first filter device via the water pump. The wastewater outlet of the first filter device is connected to the inlet of the first filter device through the second adjustable valve, the check valve and the water pump, and is also connected to the inlet of the wastewater pipe through the first switching valve. The water outlet of the first filter device is connected to the water inlet of the water purification pipe, and is also connected to the water inlet of the heating device through the first adjustable valve. The outlet of the water purification pipe is connected to the inlet of the heating device, and the inlet of the hot water pipe is connected to the outlet of the heating device. The water outlet is connected to the outlet of the hot water pipe.

2. The water purifier as described in claim 1, characterized in that, The water purifier also includes a wastewater outlet and a second switch valve; The wastewater outlet is connected to the wastewater outlet of the first filter device via the second switch valve, and also to the outlet of the wastewater pipe.

3. The water purifier as described in claim 1 or 2, characterized in that, The water purifier also includes a second filter device and a third switch valve, and the water inlet is connected to the water inlet of the second filter device. The outlet of the second filter device is connected to the inlet of the first filter device via the third switching valve; and / or, The water purifier also includes a third filtration device, and the water outlet of the first filtration device is connected to the water inlet of the water purification pipe through the third filtration device.

4. The water purifier as described in claim 2, characterized in that, The water purifier also includes a wastewater solenoid valve, and the wastewater outlet of the first filter device is connected to the first switch valve and the second switch valve respectively through the wastewater solenoid valve.

5. A method for controlling the outlet water temperature of a water purifier, characterized in that, The control method is implemented using a water purifier as described in any one of claims 1-4, and the control method includes: Detect the actual water temperature at the outlet of the hot water pipe; If the actual outlet water temperature does not reach the target outlet water temperature, the opening of the first adjustable valve is adjusted according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

6. The method for controlling the outlet water temperature of a water purifier as described in claim 5, characterized in that, The control method further includes: If the opening of the first adjustable valve is at its minimum and the actual outlet water temperature has not reached the target outlet water temperature, then the opening of the first adjustable valve remains unchanged, and the opening of the second adjustable valve is adjusted according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

7. The method for controlling the outlet water temperature of a water purifier as described in claim 6, characterized in that, The water purifier further includes a wastewater outlet and a second switching valve; the wastewater outlet is connected to the wastewater outlet of the first filter device via the second switching valve, and also to the outlet of the wastewater pipe; the control method further includes: Detect the water quality parameters at the inlet of the first filtration device; Determine whether the water quality parameters meet the target water quality parameters. If not, then control the second switching valve to open and control the second adjustable valve to close; If so, then control the second switching valve to close.

8. A control system for the outlet water temperature of a water purifier, characterized in that, The control system is applied to the water purifier according to any one of claims 1-4, and the control system comprises: The detection module is used to detect the actual water temperature at the outlet of the hot water pipe; The judgment module, in response to the actual outlet water temperature not reaching the target outlet water temperature, calls the adjustment module to adjust the opening degree of the first adjustable valve according to the temperature difference between the actual outlet water temperature and the target outlet water temperature.

9. 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, it implements the method for controlling the outlet water temperature of the water purifier as described in any one of claims 5-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for controlling the outlet water temperature of the water purifier as described in any one of claims 5-7.

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