Waterway control system capable of reducing incrustation scale

Abstract

The invention relates to the technical field of intelligent closestools, and provides a waterway control system capable of reducing incrustation scale, the waterway control system comprises a water source, a heating device and a flushing waterway which communicate with one another through pipelines, when the flushing waterway uses hot water, water flow of the water source is heated by the heating device and then supplied to the flushing waterway; and after the heating device stops supplying hot water to the flushing water way, the descaling function is executed, and the water source is controlled to at least supply water flow with the temperature lower than a preset threshold value to the flushing water way and / or the heating device so as to flush out at least part of residual hot water in the flushing water way and / or the heating device. On the basis, incrustation deposition can be reduced, incrustation blockage can be improved, the service life of the product is prolonged, and user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of smart toilet technology, and more specifically to a water system control system for reducing limescale buildup. Background Technology

[0002] In the use of smart toilets, instant heating technology is used to instantly heat the incoming water source and deliver it to each flushing nozzle as needed, meeting users' needs for instant hot water, constant water temperature, and hygienic and energy-saving use.

[0003] However, in practical applications, especially in areas with high water hardness, the calcium and magnesium ions dissolved in hard water mainly exist in the form of bicarbonates. When water flows through the instant heating module and is rapidly heated to the set temperature (usually 30℃-40℃ or even higher), the bicarbonates decompose upon heating, generating insoluble solid particles such as calcium carbonate and magnesium hydroxide, which are the main components of limescale. After the flushing process, although heating stops, a small amount of hot water remains in the instant heating chamber, flushing connection pipes, and between the reversing valve and the nozzle, which cannot be completely drained, resulting in hot water residue. During the natural cooling process, the solid particles already formed in this static residual hot water gradually deposit and adhere to the pipe walls and the surface of the heating element. With the accumulation of use, limescale continues to build up, eventually leading to narrowing or even complete blockage of the flushing connection pipes, reduced thermal efficiency of the heating element, uneven water output from the nozzles, or reduced flow rate, seriously affecting product performance, service life, and user experience.

[0004] Therefore, this application studies a water system control system to reduce scale formation, thereby reducing scale deposition, improving scale blockage problems, extending product lifespan, and enhancing user experience. Summary of the Invention

[0005] In order to minimize scale buildup, improve scale blockage, extend product lifespan, and enhance user experience, this application provides a water system control system for reducing scale formation.

[0006] This application provides a water system control system for reducing scale formation, which adopts the following technical solution: A water system control system for reducing scale formation includes a water source, a heating device, and a flushing water path interconnected by pipes. When hot water is used in the flushing water path, the water from the water source is heated by the heating device and then supplied to the flushing water path. After the heating device stops supplying hot water to the flushing water path, a descaling function is performed, controlling the water source to supply water with a temperature below a preset threshold to at least the flushing water path and / or the heating device to flush out at least a portion of the residual hot water in the flushing water path and / or the heating device.

[0007] Preferably, when performing the descaling function, the water source is controlled to supply water with a temperature lower than a preset threshold to the flushing water path; When performing the descaling function, follow these steps in sequence: S1: The system responds to the descaling function command and controls the heating device to stop supplying hot water to the flushing water path; S2: After the heating device stops supplying hot water to the flushing water path, the water source is controlled to supply water with a temperature lower than a preset threshold to the flushing water path for flushing.

[0008] Preferably, a reversing valve and a nozzle device are sequentially provided in the flushing water path. The inlet of the reversing valve is connected to the outlet of the heating device through an inlet water path, and the outlet of the reversing valve is connected to the nozzle device through an outlet water path. In step S1, the heating device is stopped from supplying hot water to the flushing water circuit by controlling the heating device to stop heating. In step S2, the water source is controlled to supply water with a temperature lower than a preset threshold to the inlet water path and / or outlet water path.

[0009] Preferably, in step S2, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to the inlet and outlet water channels.

[0010] Preferably, the reversing valve further includes an air inlet channel, the inlet of which is connected to an air pump, and the outlet of which is connected to a water outlet channel, so that the air pump supplies airflow to the water outlet channel.

[0011] Preferably, step S2 includes step S21, controlling the water source to supply water with a temperature lower than a preset threshold to the inlet water circuit until the residual hot water in the inlet water circuit is flushed out and the water source stops supplying water.

[0012] Step S2 also includes step S22: turning on the air pump and controlling the air pump to supply airflow to the water outlet to blow out the residual hot water in the water outlet.

[0013] Preferably, step S2 further includes step S23, whereby after the airflow flushes out the residual hot water in the outlet water path, the air pump continues to work until the air pump dries out the residual hot water in the outlet water path and then shuts off.

[0014] Preferably, the reversing valve has at least two outlets, and the water outlet path includes at least a functional water pipeline and a self-cleaning pipeline. The functional water pipeline and the self-cleaning pipeline are respectively connected to the outlets of the reversing valve. The nozzle device has a corresponding functional water spray nozzle, and the functional water pipeline is connected to the functional water spray nozzle. The nozzle device also has a corresponding self-cleaning spray nozzle, and the self-cleaning pipeline is connected to the self-cleaning spray nozzle.

[0015] Preferably, the nozzle device includes a spray bar and a nozzle housing, the spray bar is telescopically accommodated in the nozzle housing, the functional water spray nozzle is disposed on the spray bar, and the self-cleaning water spray nozzle is disposed on the nozzle housing facing the spray bar; When performing the descaling function, and when the reversing valve switches to the functional water pipeline, the spray bar retracts into the nozzle housing.

[0016] Preferably, in step S2, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to the heating device and the flushing water path for flushing the flushing water path; Alternatively, the water source and the flushing water path are connected through the single cooling pipe; in step S2, the water supplied by the water source flows through the single cooling pipe to the flushing water path to flush the flushing water path.

[0017] By adopting the above technical solution, the rinsing water does not flow through the heating device, and the unheated low-temperature water source is used directly, which may make the rinsing speed faster.

[0018] In summary, this application includes the following beneficial technical effects: 1. The system performs a descaling function by using water flow at a temperature lower than a preset threshold to flush the flushing water circuit and / or heating device. This flushes out at least some of the residual hot water in the flushing water circuit and / or heating device, reducing the amount of hot water remaining in the flushing water circuit or heating device. This effectively reduces scale buildup, thereby reducing pipe blockage or heating efficiency issues, extending service life, and improving user experience.

[0019] 2. By controlling the water source to supply water with a temperature lower than the preset threshold to both the inlet and outlet water circuits, the residual hot water in the flushing water circuit pipes can be effectively reduced or even prevented, thereby reducing scale buildup.

[0020] 3. Control the water source to supply water with a temperature lower than the preset threshold only to the inlet water circuit, and add an air pump to control the airflow to supply air to the outlet water circuit to flush out or dry the residual hot water in the outlet water circuit. This can effectively reduce or even prevent the residual hot water in the flushing water circuit pipes, thereby reducing scale deposition and saving water.

[0021] 4. The water source, heating device, and flushing water path are interconnected by pipelines. When hot water is used in the flushing water path, the water from the water source is heated by the heating device and then supplied to the flushing water path. When flushing the flushing water path, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to the heating device and the flushing water path for flushing the flushing water path, and the heating device can also be flushed at the same time. The connection path formed by the water source, heating device, and flushing water path connected in the above manner is simpler.

[0022] 5. The nozzle device includes a spray bar and a nozzle housing. The spray bar has a functional water nozzle and a self-cleaning nozzle. The self-cleaning nozzle faces the spray bar and is used for cleaning the spray bar or the functional water nozzle in the nozzle device. When rinsing the functional water pipeline, the spray bar needs to be retracted, otherwise it will splash onto the user. Since the self-cleaning nozzle faces the spray bar, it will not splash onto the user. Therefore, the self-cleaning of the spray bar can be performed at the same time as retracting the spray bar, reducing the action time. After the spray bar is retracted, the outlet of the functional water pipeline is covered by the nozzle housing on the nozzle device. At this time, the rinsing will not splash onto the user. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0024] In the diagram: Figure 1 This is a connection diagram of the water system control system for reducing scale formation according to Embodiment 1 of this application; Figure 2 This is a schematic diagram of the functional water pipe structure in the water circuit control system for reducing scale formation according to Embodiment 1 of this application; Figure 3 This is a cross-sectional schematic diagram of the functional water spray nozzle in the water circuit control system for reducing scale formation according to Embodiment 1 of this application; Figure 4 This is a cross-sectional schematic diagram of the self-cleaning spray nozzle of the water circuit control system for reducing scale formation in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the structure of the water circuit control system for reducing scale formation in Embodiment 1 of this application when the spray bar is in the retracted state; Figure 6 This is a schematic diagram of the spray bar in the extended state of the water circuit control system for reducing scale formation in Embodiment 1 of this application; Figure 7 This is a timing diagram of the steps in the water circuit control system for reducing scale formation in Embodiment 1 of this application.

[0025] Figure 8 This is a connection diagram of the water system control system for reducing scale formation in Embodiment 5 of this application. Figure 1 ; Figure 9 This is a timing diagram of the steps in the water circuit control system for reducing scale formation in Embodiment 5 of this application.

[0026] Figure 10 This is a connection diagram of the water system control system for reducing scale formation in Embodiment 5 of this application. Figure 2 ; Reference numerals: 1. Heating device; 2. Functional water pipeline; 3. Self-cleaning pipeline; 4. Nozzle device; 41. Spray bar; 42. Nozzle housing; 5. Buttock wash pipeline; 6. Feminine wash pipeline; 7. Pressure stabilizing valve; 8. Reversing valve; 9. First water outlet; 10. Second water outlet; 11. Buttock wash nozzle outlet; 12. Feminine wash nozzle outlet; 13. Self-cleaning spray nozzle; 14. Air inlet channel. Detailed Implementation

[0027] This application discloses a water circuit control system for reducing scale formation, including a water source, a heating device 1, and a flushing water circuit interconnected by pipelines. When hot water is used in the flushing water circuit, the water from the water source is heated by the heating device 1 and then supplied to the flushing water circuit. After the heating device 1 stops supplying hot water to the flushing water circuit, it performs a descaling function, controlling the water source to supply water with a temperature lower than a preset threshold to the flushing water circuit and / or the heating device 1 to flush out at least a portion of the residual hot water in the flushing water circuit and / or the heating device 1.

[0028] The system performs a descaling function by using water flow at a temperature below a preset threshold to flush the flushing water path and / or heating device 1. This flushes out at least some of the residual hot water in the flushing water path and / or heating device 1, reducing the amount of hot water remaining in the flushing water path or heating device 1. This effectively reduces scale buildup, thereby reducing pipe blockage or heating efficiency issues, extending service life, and improving user experience.

[0029] The following is in conjunction with the appendix Figure 1-7 The first embodiment of this application will be described in further detail.

[0030] Embodiment 1 of this application discloses a water system control system for reducing scale formation. (Refer to...) Figure 1 The water system control system for reducing scale formation includes a water source, a heating device 1, and a flushing water path interconnected by pipes. The water source is connected to the heating device 1 via a pressure regulating valve 7. The outlet of the heating device 1 is connected to the flushing water path. A solenoid valve (not shown) is also provided to control the on / off state of the water source. When hot water is used in the flushing water path, the water from the source is heated by the heating device 1 and then supplied to the flushing water path. After the heating device 1 stops heating, the descaling function is activated, controlling the water source to sequentially supply water with a temperature below a preset threshold to the heating device 1 and the flushing water path for rinsing the flushing water path. When performing the descaling function, follow these steps in sequence: S1: The system responds to the descaling function command and controls heating device 1 to stop heating. By controlling heating device 1 to stop heating, heating device 1 no longer supplies hot water to the flushing water circuit; S2: After the heating device 1 stops heating, the water source is controlled to supply water with a temperature lower than a preset threshold to the rinsing water path for rinsing. The preset threshold is lower than 30°C. In this embodiment, room temperature water is used, with a temperature range of approximately 20~25 degrees Celsius.

[0031] In this embodiment, a reversing valve 8 and a nozzle device 4 are sequentially provided on the flushing water path. The inlet of the reversing valve 8 is connected to the outlet of the heating device 1 through an inlet water path, and the outlet of the reversing valve 8 is connected to the nozzle device 4 through an outlet water path. In step S2, the water source is controlled to supply water with a temperature lower than a preset threshold to the inlet and outlet water circuits in sequence.

[0032] Reference Figures 1-4 In this embodiment, the reversing valve 8 has at least two outlets. The water outlet path includes at least a functional water pipe 2 and a self-cleaning pipe 3. The functional water pipe 2 and the self-cleaning pipe 3 are respectively connected to the outlets of the reversing valve 8. The nozzle device 4 has corresponding functional water nozzles, and the functional water pipe 2 is connected to the functional water nozzles. The nozzle device 4 also has corresponding self-cleaning nozzles 13, and the self-cleaning pipe 3 is connected to the self-cleaning nozzles 13. The reversing valve 8 is used to switch the inlet water path from being connected to the functional water pipe 2 or the self-cleaning pipe 3. When the nozzle device 4 is self-cleaning, the reversing valve 8 is connected to the self-cleaning pipe 3 and not connected to the functional water pipe 2. When the nozzle device 4 uses the functional water pipe 2, the reversing valve 8 is connected to the functional water pipe 2 and not connected to the self-cleaning pipe 3. The reversing valve 8 is a reversing valve 8 in the prior art. Specifically, in this embodiment, the functional water pipeline 2 includes a posterior wash pipeline 5 and a feminine wash pipeline 6. The nozzle device 4 has corresponding posterior wash nozzle outlets 11 and feminine wash nozzle outlets 12. The reversing valve 8 has three outlets, including a first outlet 9, which is connected to the functional water pipeline 2. The number of first outlets 9 corresponds one-to-one with the number of functional water pipelines 2. Specifically, there are two first outlets 9, which are connected to the posterior wash pipeline 5 and the feminine wash pipeline 6, respectively. The second outlet 10 of the reversing valve 8 is connected to the self-cleaning pipeline 3. In this embodiment, after the reversing valve 8 is switched, it can be connected to the posterior wash pipeline 5, the feminine wash pipeline 6, and the self-cleaning pipeline 3, respectively.

[0033] Reference Figure 1 , Figure 4 and Figure 6In this embodiment, the nozzle device 4 includes a spray rod 41 and a nozzle housing 42. The spray rod 41 is retractably housed in the nozzle housing 42. The functional water spray nozzle is disposed on the spray rod 41, and the self-cleaning spray nozzle 13 is disposed on the nozzle housing 42 facing the spray rod 41. When performing the descaling function, and when the reversing valve 8 switches to the functional water pipeline 2, the spray rod 41 retracts into the nozzle housing 42. When the functional water pipeline 2 is flushed, the spray rod 41 needs to be retracted, otherwise it will splash onto the user. Since the self-cleaning spray nozzle 13 faces the spray rod 41, it will not splash onto the user. Therefore, the self-cleaning of the spray rod 41 can be performed while the spray rod 41 is retracted, reducing the action time. After the spray rod 41 is retracted, the outlet of the functional water pipeline 2 is covered by the nozzle housing 42 on the nozzle device 4, and the flushing will not splash onto the user.

[0034] In this embodiment, by controlling the water inlet time, the hot water in the flushing water pipe can be flushed out completely or in a way that reduces scale buildup. The water source, heating device 1, and flushing water path are interconnected by pipes. When using hot water, the water flow passes through heating device 1 during both hot water use and flushing. This water path connection method is more concise.

[0035] Reference Figure 7 The specific execution steps of this embodiment are as follows: S1: The system executes the descaling function command, controlling the heating device 1 to stop heating; S2: After the heating device 1 stops heating, water with a temperature lower than a preset threshold is supplied sequentially to the heating device 1, the inlet water passage and the outlet water passage for rinsing the water passage; The specific steps for S2 are as follows: S21: The reversing valve 8 switches to the self-cleaning pipeline 3 and connects with the self-cleaning pipeline 3. The pressure stabilizing valve 7 continues to output water. At the same time, the spray bar 41 begins to retract. The water source passes through the heating device 1, the inlet water circuit and the self-cleaning pipeline 3 in sequence to supply water with a temperature lower than the preset threshold. The cold water is used to flush out the residual hot water in the self-cleaning pipeline 3. S22: The reversing valve 8 switches to the posterior wash line 5. At the same time, the spray bar 41 has completed its retraction. The pressure stabilizing valve 7 continues to dispense water. The water source passes through the heating device 1, the inlet water line, and the posterior wash line 5 in sequence to supply water with a temperature lower than the preset threshold. The cold water is used to flush out the residual hot water in the posterior wash line 5.

[0036] S23: The reversing valve 8 switches to the feminine wash pipeline 6. At the same time, the spray bar 41 has completed its retraction. The pressure stabilizing valve 7 continues to supply water. The water source passes through the heating device 1, the inlet water line and the feminine wash pipeline 6 in sequence to supply water with a temperature lower than the preset threshold. The cold water is used to flush out the residual hot water in the feminine wash pipeline 6.

[0037] In this embodiment, the functional water circuit includes a posterior wash pipe 5 and a feminine wash pipe 6. Before or simultaneously with the reversing valve 8 connecting to the posterior wash pipe 5, the spray bar 41 has already retracted.

[0038] The self-cleaning pipeline 3 is used for cleaning the spray bar 41 and the functional water spray nozzle, so cold water or hot water can be used. In this embodiment, the self-cleaning pipeline 3 is connected to the reversing valve 8, making the pipeline integration simpler. Therefore, in this embodiment, after the heating device 1 stops heating, the system starts to perform the descaling function accordingly. The heating device 1 can stop heating before or after the self-cleaning pipeline 3 self-cleans.

[0039] The following provides a more detailed description of Embodiment 2 of this application.

[0040] In this embodiment, a separate cooling pipe (not shown) is also included. The separate cooling pipe is connected between the water source and the flushing water path, and a solenoid valve is provided to control the independent on / off state of the separate cooling pipe. Compared with the first embodiment, the difference in this embodiment is that the heating device 1 can be connected to a separate drain pipe (not shown). After the flushing water path no longer uses hot water, the hot water supplied by the heating device 1 can be diverted to other devices for use in other devices or for discharge. At this time, the separate cooling pipe is used to connect the cold water flushing inlet and outlet water paths. The specific implementation of this embodiment S1: The system responds to the descaling function command and controls the heating device 1 to stop supplying hot water to the flushing water circuit; S2: After the heating device 1 stops supplying hot water to the flushing water circuit, the water supply from the water source flows through the single cooling pipe and supplies water with a temperature lower than the preset threshold to the inlet water circuit and the outlet water circuit for flushing the flushing water circuit. The specific steps for S2 are as follows: S21: The reversing valve 8 switches to the self-cleaning pipeline 3 and connects with the self-cleaning pipeline 3. The pressure stabilizing valve 7 continues to output water. At the same time, the spray bar 41 begins to retract. The water supply flows through the single cooling pipeline, the inlet water pipeline, and the self-cleaning pipeline 3 in sequence. The cold water is used to flush out the residual hot water in the self-cleaning pipeline 3. S22: The reversing valve 8 switches to the posterior wash line 5. At the same time, the spray bar 41 has completed its retraction. The pressure stabilizing valve 7 continues to discharge water. The water supply flows through the single cooling line, the inlet water line, and the posterior wash line 5, using cold water to flush out the residual hot water in the posterior wash line 5.

[0041] S23: The reversing valve 8 switches to the feminine wash pipeline 6. At the same time, the spray bar 41 has completed its retraction. The pressure stabilizing valve 7 continues to discharge water. The water supply flows through the single cooling pipeline, the inlet water pipeline, and the feminine wash pipeline 6, using cold water to flush out the residual hot water in the feminine wash pipeline 6.

[0042] In this embodiment, the functional water circuit includes a posterior wash pipe 5 and a feminine wash pipe 6. Before or simultaneously with the reversing valve 8 connecting to the posterior wash pipe 5, the spray bar 41 has already retracted.

[0043] The following provides a more detailed description of Embodiment 3 of this application.

[0044] Compared with Example 2, in Example 3, the single cooling pipe is directly connected to the outlet water pipe, and the single cooling pipe supplies water with a temperature lower than a preset threshold to the outlet water pipe for flushing the water pipe.

[0045] The following provides a more detailed description of Embodiment 4 of this application.

[0046] In this embodiment, the water circuit control system for reducing scale formation includes a water source, a heating device 1, and a flushing water circuit interconnected by pipelines. The water source is connected to the heating device 1 through a pressure stabilizing valve 7. The outlet of the heating device 1 is connected to the flushing water circuit. A solenoid valve (not shown) is also provided to control the on / off state of the water source. When hot water is used in the flushing water circuit, the water from the water source is heated by the heating device 1 and then supplied to the flushing water circuit. After the heating device 1 stops heating, it performs the descaling function. The difference from Embodiment 1 is that the water source is controlled to supply water with a temperature lower than a preset threshold to the heating device 1 and the flushing water circuit respectively for flushing the heating device 1 and the flushing water circuit respectively.

[0047] In this embodiment, the heating device 1 is connected to a drain pipe (not shown in the figure). When the flushing water path is no longer in use, the heating device 1 stops heating, and the water from the water source flows through the heating device 1 for flushing and is flushed out from the drain pipe. The flushing water path can be connected to the water source through an independent single cooling pipe to achieve flushing.

[0048] The following describes Embodiment 5 of this application in conjunction with Figure 8-10 Further details will be provided.

[0049] Compared with Example 1, in this example, the water source is heated by device 1 and then used to flush the inlet water path. The outlet water path is flushed out or dried by an air pump.

[0050] In this embodiment, refer to Figure 8-10 The water system control system for reducing scale formation includes a water source, a heating device 1, and a flushing water path interconnected by pipes. The water source is connected to the heating device 1 via a pressure stabilizing valve 7. The outlet of the heating device 1 is connected to the flushing water path. A solenoid valve (not shown) is also provided to control the on / off of the water source. When hot water is used in the flushing water path, the water from the water source is heated by the heating device 1 and then supplied to the flushing water path. After the heating device 1 stops heating, the descaling function is performed, controlling the water source to sequentially supply water with a temperature lower than a preset threshold to the heating device 1 and the flushing water path for flushing the flushing water path. A reversing valve 8 and a nozzle device 4 are sequentially arranged in the flushing water path. The inlet of the reversing valve 8 is connected to the outlet of the heating device 1 through an inlet water path, and the outlet of the reversing valve 8 is connected to the nozzle device 4 through an outlet water path. When performing the descaling function, follow these steps in sequence: S1: The system responds to the descaling function command and controls heating device 1 to stop heating. By controlling heating device 1 to stop heating, heating device 1 no longer supplies hot water to the flushing water circuit; S2: After heating device 1 stops heating, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to heating device 1 and the inlet water circuit for rinsing the water circuit. The preset threshold is lower than 30°C.

[0051] In this embodiment, the reversing valve 8 further includes an air inlet channel 14, the inlet of which is connected to an air pump, and the outlet of which is connected to a water outlet channel, so that the air pump supplies airflow to the water outlet channel. The specific steps for S2 are as follows: Step S2 includes step S21, which controls the water source to sequentially supply water with a temperature lower than a preset threshold to the heating device 1 and the inlet water path until the residual hot water in the inlet water path is flushed out to the valve chamber of the reversing valve 8 or flows to the outlet water path, at which point the water source stops supplying water.

[0052] Step S2 also includes step S22: turning on the air pump and controlling the air pump to supply airflow to the water outlet path to flush out the residual hot water in the water outlet path.

[0053] Step S2 also includes step S23, where the airflow flushes out the residual hot water in the outlet water path, and the air pump continues to work until the air pump dries out the residual hot water in the outlet water path, at which point the air pump is turned off.

[0054] In this embodiment, the water source is controlled to supply water with a temperature below a preset threshold only to the heating device 1 and the inlet water circuit. An air pump is added, and its airflow is controlled to supply air to the outlet water circuit to blow out or dry any residual hot water. This effectively reduces or even prevents residual hot water in the flushing water circuit pipes, thereby reducing scale buildup and conserving water. Of course, in other embodiments, the water source may bypass the heating device 1 and the inlet water circuit; the water source can be connected separately to the inlet water circuit for flushing and discharged through a separate pipe.

[0055] Reference Figure 9 The specific execution steps of this embodiment are as follows: S1: The system responds to the descaling function command and controls the heating device 1 to stop heating; S2: After the heating device 1 stops heating, water with a temperature lower than a preset threshold is supplied to the heating device 1 and the water inlet circuit in sequence for rinsing the heating device 1 and the water inlet circuit; The specific steps for S2 are as follows: S21: Control the water source to supply water with a temperature lower than a preset threshold to the heating device 1 and the inlet water circuit in sequence. The reversing valve 8 switches to the self-cleaning pipeline 3 and connects to the self-cleaning pipeline 3. The pressure stabilizing valve 7 continues to discharge water. At the same time, the spray bar 41 begins to retract and uses cold water to flush out the residual hot water in the heating device 1 and the inlet water circuit until the residual hot water in the inlet water circuit is flushed out to the valve chamber of the reversing valve 8 or flows to the outlet water circuit. The water source stops supplying water.

[0056] S22: Turn on the air pump. The reversing valve 8 uses air to blow out the residual hot water in the self-cleaning pipe 3. The reversing valve 8 switches to the functional water pipe 2. At the same time, the spray bar 41 has completed its retraction. The reversing valve 8 continues to use air to blow out the residual hot water in the functional water pipe 2.

[0057] Before or simultaneously with the reversing valve 8 connecting the functional water circuit, the spray boom 41 has already completed its retraction.

[0058] Specifically, in this embodiment, the functional water circuit includes a posterior wash pipe 5 and a feminine wash pipe 6. Before or simultaneously with the reversing valve 8 connecting to the posterior wash pipe 5, the spray bar 41 has already retracted. Of course, in other embodiments, the functional water circuit may also include only the posterior wash pipe 5 or the feminine wash pipe 6.

[0059] In this embodiment, the air pump injects air, i.e., unheated gas. The gas injected by the air pump can enter the valve body cavity of the reversing valve 8 through the gap in the valve body of the reversing valve 8, and dry the residual water in the cavity.

[0060] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0061] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0062] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A water system control system for reducing scale formation, characterized in that: It includes a water source, a heating device, and a flushing water path that are interconnected by pipes. When hot water is used in the flushing water path, the water from the water source is heated by the heating device and then supplied to the flushing water path. After the heating device stops supplying hot water to the flushing water path, a descaling function is performed, controlling the water source to supply water with a temperature lower than a preset threshold to the flushing water path and / or the heating device to flush out at least a portion of the residual hot water in the flushing water path and / or the heating device.

2. A water system control system for reducing scale formation according to claim 1, characterized in that: When performing the descaling function, the water source is controlled to supply water with a temperature lower than a preset threshold to the flushing water path; When performing the descaling function, follow these steps in sequence: S1: The system responds to the descaling function command and controls the heating device to stop supplying hot water to the flushing water path; S2: After the heating device stops supplying hot water to the flushing water path, the water source is controlled to supply water with a temperature lower than a preset threshold to the flushing water path for flushing.

3. A water system control system for reducing scale formation according to claim 2, characterized in that: A reversing valve and a nozzle device are sequentially installed on the flushing water path. The inlet of the reversing valve is connected to the outlet of the heating device through an inlet water path, and the outlet of the reversing valve is connected to the nozzle device through an outlet water path. In step S1, the heating device is stopped from supplying hot water to the flushing water circuit by controlling the heating device to stop heating. In step S2, the water source is controlled to supply water with a temperature lower than a preset threshold to the inlet water path and / or outlet water path.

4. A water system control system for reducing scale formation according to claim 3, characterized in that: In step S2, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to the inlet and outlet water channels.

5. A water system control system for reducing scale formation according to claim 3, characterized in that: The reversing valve also includes an air intake channel, the inlet of which is connected to an air pump, and the outlet of which is connected to a water outlet path, through which airflow is supplied to the water outlet path by the air pump.

6. A water system control system for reducing scale formation according to claim 5, characterized in that: Step S2 includes step S21, controlling the water source to supply water with a temperature lower than a preset threshold to the inlet water circuit until the residual hot water in the inlet water circuit is flushed out and the water source stops supplying water; Step S2 also includes step S22: turning on the air pump and controlling the air pump to supply airflow to the water outlet to blow out the residual hot water in the water outlet.

7. A water circuit control system for reducing scale formation according to claim 6, characterized in that: Step S2 also includes step S23, where the airflow flushes out the residual hot water in the outlet water path, and the air pump continues to work until the air pump dries out the residual hot water in the outlet water path, at which point the air pump is turned off.

8. A water system control system for reducing scale formation according to any one of claims 3 to 7, characterized in that: The reversing valve has at least two outlets, and the water outlet path includes at least a functional water pipeline and a self-cleaning pipeline. The functional water pipeline and the self-cleaning pipeline are respectively connected to the outlets of the reversing valve. The nozzle device has a corresponding functional water spray nozzle, and the functional water pipeline is connected to the functional water spray nozzle. The nozzle device also has a corresponding self-cleaning spray nozzle, and the self-cleaning pipeline is connected to the self-cleaning spray nozzle.

9. A water system control system for reducing scale formation according to claim 8, characterized in that: The nozzle device includes a spray bar and a nozzle housing. The spray bar is telescopically accommodated in the nozzle housing. The functional water spray nozzle is disposed on the spray bar, and the self-cleaning water spray nozzle is disposed on the nozzle housing facing the spray bar. When performing the descaling function, and when the reversing valve switches to the functional water pipeline, the spray bar retracts into the nozzle housing.

10. A water system control system for reducing scale formation according to claim 2, characterized in that: In step S2, the water source is controlled to sequentially supply water with a temperature lower than a preset threshold to the heating device and the flushing water path for flushing the flushing water path; Alternatively, the water source and the flushing water path are connected through a single cooling pipe; in step S2, the water supplied by the water source flows through the single cooling pipe to the flushing water path to flush the flushing water path.

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