Noise reduction control method of closestool and closestool

Abstract

The invention provides a noise reduction control method for a closestool and the closestool, and the noise reduction control method comprises the steps: controlling a water pump to start, and improving the operation power of the water pump to a first operation power after the water pump operates for a first preset duration, after the water pump runs for a second preset duration at the first running power, the running power of the water pump is reduced within a time period of a third preset duration until operation is stopped; in the time period from starting to stopping operation of the water pump, the shunt valve is controlled to conduct first-time waterway switching in the time period of the first preset duration, so that the valve plate is switched to the second state from the first state; and the shunt valve is controlled to conduct second-time waterway switching within the time period of the third preset duration, so that the valve plate is switched to the first state from the second state. The problems that the air supply noise in the pipeline is eliminated or reduced by additionally arranging the vacuum breaker, the flushing structure of the closestool is complex due to the additionally arranged vacuum breaker, the assembly difficulty of the closestool and the production and manufacturing cost of the closestool are increased, and the economical efficiency of the closestool is not facilitated are solved.

Description

Technical Field

[0001] The invention relates to the technical field of bathrooms, and in particular to a noise reduction control method for a toilet and a toilet. Background Art

[0002] When the toilet completes the flushing operation and the water pump is in the off state, the water flow in the pipe is divided into two directions under the action of its own gravity because there is no power driving it. Among them, part of the water flows along the brush ring pipe to the brush ring mouth, and the other part of the water flows along the water outlet pipe to the water tank, thereby causing a cavity to be formed in the water outlet pipe; at the same time, the pressure difference at both ends of the brush ring pipe causes the gas to diffuse from the high-pressure end to the low-pressure end. The gas flow thus formed is referred to as negative pressure suction or negative pressure air replenishment. When the gas flows into the cavity, vibration noise is generated. In addition, if the pressure difference at both ends of the brush ring pipe is greater, the instantaneous air suction volume of the brush ring pipe will be greater, thereby making the air replenishment noise greater. The louder air replenishment noise seriously affects the user's usage experience.

[0003] In the prior art, a vacuum breaker is added in the middle of the pipeline and at the rear end of the water diversion valve to eliminate or reduce the air supply noise in the pipeline. However, the addition of the vacuum breaker makes the flushing system of the toilet more complicated, increases the difficulty of assembling the toilet, and increases the production cost of the toilet, which is not conducive to the economy of the toilet. Summary of the invention

[0004] The main purpose of the present invention is to provide a noise reduction control method for a toilet and a toilet, so as to solve the problem that the toilet in the prior art eliminates or reduces the air supply noise in the pipeline by adding a vacuum breaker, while the addition of the vacuum breaker makes the flushing structure of the toilet complicated, increases the difficulty of assembling the toilet and the production cost of the toilet, which is not conducive to the economy of the toilet.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a noise reduction control method for a toilet is provided, including controlling a water pump to start, and increasing its operating power to a first operating power after running for a first preset time, and reducing its operating power within a third preset time period until the operation stops after the water pump runs at the first operating power for a second preset time period; within the time period from the start of the water pump to the cessation of operation, controlling the water diverter valve to perform a first water path switching within the first preset time period, so that the valve plate of the water diverter valve switches from a first state of only closing the main flushing pipe to a second state of simultaneously opening the brush ring pipe and the main flushing pipe; controlling the water diverter valve to perform a second water path switching within the third preset time period, so that the valve plate of the water diverter valve switches from the second state to the first state.

[0006] Furthermore, when the water diverter valve is controlled to perform the first water circuit switching and the valve plate of the water diverter valve is in the second state, the first connecting cross-sectional area S1 of the first connecting point between the water outlet of the water diverter valve and the water inlet of the brush ring pipe and the second connecting cross-sectional area S2 of the second connecting point between the water outlet of the water diverter valve and the water inlet of the main flushing pipe satisfy: S1=S2.

[0007] Furthermore, during the time period of the first preset time length when the water pump is running, the operating power of the water pump is increased at least twice; there is also a fourth preset time length between the first preset time length and the second preset time length, and the operating power of the water pump is increased to the first operating power during the time period of the fourth preset time length; any increase ratio of the operating power of the water pump during the time period of the first preset time length is smaller than the increase ratio of the operating power of the water pump during the time period of the fourth preset time length.

[0008] Furthermore, the first preset time period includes a first sub-time period, a second sub-time period, a third sub-time period, and a fourth sub-time period in sequence; the operating power of the water pump is increased to the second operating power within the time period of the first sub-time period, and operates at the second operating power for the second sub-time period; the operating power of the water pump continues to be increased to the third operating power within the time period of the third sub-time period, and operates at the third operating power for the fourth sub-time period; wherein, the starting time point of the first water path switching of the water diverting valve is within the time period of the second sub-time period, and the completion time point of the first water path switching of the water diverting valve is within the time period of the third sub-time period.

[0009] Furthermore, during the time period of the third preset time length of the water pump operation, the operating power of the water pump is reduced at least twice; there is also a fourth preset time length between the first preset time length and the second preset time length, and the operating power of the water pump is increased to the first operating power during the time period of the fourth preset time length; the reduction ratio of the operating power of the water pump from the first operating power to the third operating power during the time period of the third preset time length is equal to the increase ratio of the operating power of the water pump during the time period of the fourth preset time length.

[0010] Further, the third preset time length includes a fifth sub-time length, a sixth sub-time length, a seventh sub-time length, an eighth sub-time length, and a ninth sub-time length in sequence; the operating power of the water pump is reduced to the third operating power during the fifth sub-time length, and operates at the third operating power for the sixth sub-time length; the operating power of the water pump is reduced to the fourth operating power during the seventh sub-time length, and operates at the fourth operating power for the eighth sub-time length; the operating power of the water pump is reduced to stop operation during the ninth sub-time length; the reduction ratio of the operating power of the water pump during the fifth sub-time length is greater than the reduction ratio of the operating power of the water pump during the seventh sub-time length; and, the reduction ratio of the operating power of the water pump during the fifth sub-time length is greater than the reduction ratio of the operating power of the water pump during the ninth sub-time length.

[0011] Further, the start time point of the second waterway switching of the water diverter valve is within the sixth sub-hour period, and the completion time point of the second waterway switching of the water diverter valve is within the sixth sub-hour period.

[0012] Furthermore, when the water diverter valve is controlled to switch the water path for the first time, the valve disc of the water diverter valve rotates toward the side of the brush ring pipe by a first preset angle A; the water diverter valve is controlled to switch the water path for the third time within the eighth sub-hour period, so that the valve disc of the water diverter valve switches from the first state of only closing the main flushing pipe to the third state of forming an air suction gap between the valve disc of the water diverter valve and the inner wall surface of the valve body located on the side of the brush ring pipe, so that the brush ring pipe can perform an air suction operation; when the water diverter valve is controlled to switch the water path for the third time, the valve disc of the water diverter valve rotates toward the side of the brush ring pipe by a second preset angle B, wherein the first preset angle A and the second preset angle B satisfy A<B.

[0013] Furthermore, after the brush ring pipe completes the air suction operation, the valve plate of the water diverter valve is controlled to withdraw from one side of the brush ring pipe and close the main flushing pipe; after the water diverter valve closes the main flushing pipe, the water diverter valve is controlled to be in a stopped operating state.

[0014] Furthermore, after the water pump runs for the tenth sub-period within the first preset time period, the water inlet valve is controlled to start so that the water inlet valve can perform the water tank filling operation; wherein, the start time point of the water tank filling operation is before the start time point of the water diversion valve performing the first water path switching; and, the end time point of the water tank filling operation is after the brush ring pipe completes the air suction operation and the valve plate of the water diversion valve exits the brush ring pipe. End time point.

[0015] According to another aspect of the present invention, a toilet is provided, which executes the above-mentioned noise reduction control method. The toilet includes a toilet body, a water pump, a water tank, a brush ring pipe and a main flush pipe, wherein the toilet body has a sewage cavity; the water inlet of the water pump is connected to the drain outlet of the water tank, and the drain outlet of the water pump is connected to the water outlet pipe; the brush ring pipe and the main flush pipe are connected to the water outlet pipe through a water diversion valve, the brush ring pipe is used to spray water onto the cavity wall of the sewage cavity, and the main flush pipe is used to supply water to the sewage cavity; a filter is arranged in the brush ring pipe, and the filter is located between the water inlet and the water outlet of the brush ring pipe.

[0016] Furthermore, the filter screen has a central hole, and the cross-sectional area of ​​the hole section of the central hole accounts for 1 / 4 of the cross-sectional area of ​​the pipe section of the brush ring pipe.

[0017] Furthermore, the toilet also includes a water inlet valve, which is connected to the water inlet of the water tank to provide water inlet to the water tank.

[0018] By applying the technical solution of the present invention, a noise reduction control method for a toilet is provided, including controlling a water pump to start, and increasing its operating power to a first operating power after running for a first preset time, and reducing its operating power within a third preset time period until the operation stops after the water pump runs at the first operating power for a second preset time period; within the time period from the start of the water pump to the cessation of operation, controlling a water diverter valve to perform a first water path switching within a time period of the first preset time period, so that the valve plate of the water diverter valve switches from a first state of only closing the main flushing pipe to a second state of simultaneously opening the brush ring pipe and the main flushing pipe; controlling the water diverter valve to perform a second water path switching within a time period of the third preset time period, so that the valve plate of the water diverter valve switches from the second state to the first state.

[0019] The water path is switched by the valve plate of the water diverter valve, and when the operating power of the water pump is the maximum operating power, that is, the first operating power, the valve plate of the water diverter valve is controlled so that the valve plate of the water diverter valve is switched from a first state in which only the main flushing pipe is closed to a second state in which both the brush ring pipe and the main flushing pipe are opened simultaneously, so that water can flow out of the brush ring pipe and the main flushing pipe at the same time, thereby achieving the purpose of reducing the toilet flushing noise.

[0020] Since the present application does not require an additional vacuum breaker, it ensures the convenience of toilet assembly while reducing the production cost of the toilet, which is beneficial to ensuring the economy of the toilet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of a toilet flushing system according to an optional embodiment of the present invention is shown;

[0023] Figure 2 Shows Figure 1 A structural diagram of another perspective of the flushing system;

[0024] Figure 3 A logical schematic diagram showing the generation of air-filling noise in a toilet pipe;

[0025] Figure 4 A schematic diagram showing the working sequence of a flushing system of a toilet according to an optional embodiment of the present invention is shown;

[0026] Figure 5 Shows Figure 4 A schematic diagram of the change ratio of the operating power of the toilet water pump corresponding to the working sequence in the figure;

[0027] Figure 6 Shows Figure 4 A schematic diagram of the state structure corresponding to the working sequence of the flushing system;

[0028] Figure 7 A schematic structural diagram of a filter net of a toilet according to an optional embodiment of the present invention is shown;

[0029] Figure 8 A schematic flow chart of a noise reduction control method for a toilet according to an optional embodiment of the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 1. Gas; 2. Water flow; 3. Cavity;

[0032] 10. Water pump;

[0033] 20. Water diverter valve; 21. Valve plate;

[0034] 30. Main flushing pipe; 40. Brush ring pipe; 50. Water inlet valve; 60. Water tank; 70. Water outlet pipe;

[0035] 80. Filter screen; 81. Center hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In order to solve the problem that in the prior art, a vacuum breaker is added to eliminate or reduce the air supply noise in the pipeline, but the addition of the vacuum breaker makes the flushing structure of the toilet complicated, increases the difficulty of assembling the toilet and the production cost of the toilet, which is not conducive to the economy of the toilet, the present invention provides a noise reduction control method for a toilet and a toilet.

[0038] like Figures 1 to 8As shown, the toilet performs the above and below noise reduction control methods, and the toilet includes a toilet body, a water pump 10, a water tank 60, a brush ring pipe 40 and a main flush pipe 30, wherein the toilet body has a sewage cavity; the water inlet of the water pump 10 is connected to the drain port of the water tank 60, and the drain port of the water pump 10 is connected to the water outlet pipe; the brush ring pipe 40 and the main flush pipe 30 are connected to the water outlet pipe 70 through the water diversion valve 20, the brush ring pipe 40 is used to spray water to the cavity wall of the sewage cavity, and the main flush pipe 30 is used to supply water to the sewage cavity; a filter net 80 is arranged in the brush ring pipe 40, and the filter net 80 is located between the water inlet and the water outlet of the brush ring pipe 40. In this way, by adding the filter net 80, the performance of the water pump 10 is adjusted, and the water outlet of the brush ring pipe 40 is rectified and the water splashing phenomenon is eliminated.

[0039] Preferably, the filter screen 80 is made of stainless steel.

[0040] like Figure 7 As shown, the filter 80 has a central hole 81, and the cross-sectional area of ​​the central hole 81 accounts for 1 / 4 of the cross-sectional area of ​​the brush ring pipe 40. In this way, by setting the filter 80 to have a structural form with a central hole 81, the central hole 81 can play a role in eliminating abnormal air replenishment sound. The setting of the central hole 81 is conducive to increasing the air replenishment volume and air replenishment speed of the brush ring pipe 40, and the mesh portion located at the periphery of the central hole 81 reduces the possibility of water splashing.

[0041] Further, the toilet also includes a water inlet valve 50, which is connected to the water inlet of the water tank 60 to provide water to the water tank 60. In this way, it is ensured that the water tank 60 can be replenished with water in time, thereby ensuring that the water tank 60 can have enough water when flushing next time.

[0042] like Figure 2 As shown, arrow C indicates the direction in which gas enters the brush ring pipe 40.

[0043] like Figure 3 As shown in FIG. 4 , it can be seen from FIG. 4 that when the toilet completes the flushing operation and the water pump 10 is in the closed state, the water flow 2 in the brush ring pipe 40 flows in two directions under the action of its own gravity because there is no power drive (refer to FIG. 4 ). Figure 3b in the figure, arrow D indicates the direction of water flow), wherein a part of the water flow 2 flows along the brush ring pipe 40 to the brush ring mouth, and the other part of the water flow 2 flows along the water outlet pipe 70 to the water tank 60, thereby causing a cavity 3 to be generated in the water outlet pipe 70; at the same time, due to the pressure difference at both ends of the brush ring pipe 40, the gas 1 diffuses from the high-pressure end to the low-pressure end, and the gas flow thus formed is referred to as negative pressure suction or negative pressure air replenishment. When the gas 1 flows into the cavity 3, vibration noise is generated. In addition, if the pressure difference at both ends of the brush ring pipe 40 is greater, the instantaneous air intake of the brush ring pipe 40 will be greater, thereby making the air replenishment noise greater. The louder air replenishment noise seriously affects the user's usage experience.

[0044] like Figures 4 to 6 , Figure 8 As shown, the noise reduction control method for the toilet includes controlling the water pump 10 to start, and increasing its operating power to the first operating power after running for a first preset time, and after the water pump 10 runs for a second preset time at the first operating power, reducing its operating power within a third preset time period until it stops operating; within the time period from the start of the water pump 10 to the stop of the operation, controlling the water diverter valve 20 to perform a first water circuit switch within the first preset time period, so that the valve plate 21 of the water diverter valve 20 switches from a first state of only closing the main flushing pipe 30 to a second state of simultaneously opening the brush ring pipe 40 and the main flushing pipe 30; controlling the water diverter valve 20 to perform a second water circuit switch within the third preset time period, so that the valve plate 21 of the water diverter valve 20 switches from the second state to the first state.

[0045] The water path is switched by the valve plate 21 of the water diverter valve 20, and when the operating power of the water pump 10 is the maximum operating power, that is, the first operating power, the valve plate 21 of the water diverter valve 20 is controlled so that the valve plate 21 of the water diverter valve 20 is switched from the first state of only closing the main flushing pipe 30 to the second state of simultaneously opening the brush ring pipe 40 and the main flushing pipe 30, so that the brush ring pipe 40 and the main flushing pipe 30 can discharge water at the same time, thereby achieving the purpose of reducing the toilet flushing noise.

[0046] Since the present application does not require an additional vacuum breaker, it ensures the convenience of toilet assembly while reducing the production cost of the toilet, which is beneficial to ensuring the economy of the toilet.

[0047] It should be noted that, in the present application, the valve plate 21 of the water diverter valve 20 is controlled by a stepper motor on the water diverter valve 20; the stepper motor is controlled by a main control board in the cover plate.

[0048] It should be noted that in the present application, when the water diverter valve 20 is controlled to switch the water path for the first time and the valve plate 21 of the water diverter valve 20 is in the second state, the first connection cross-sectional area S1 of the first connection point between the water outlet of the water diverter valve 20 and the water inlet of the brush ring pipe 40 and the second connection cross-sectional area S2 of the second connection point between the water outlet of the water diverter valve 20 and the water inlet of the main flushing pipe 30 satisfy: S1=S2. In this way, it is ensured that the water flow of the brush ring pipe 40 is as consistent as possible with the water flow of the main flushing pipe 30, and the valve plate 21 of the water diverter valve 20 plays an effective diversion role.

[0049] like Figure 4 and Figure 5 As shown, the working sequence of the water pump 10 is:

[0050] T0→Water pump 10 starts;

[0051] T0-T3→The operating power of the water pump 10 is slowly increased to the second operating power within the first sub-time period, and operates at the second operating power for the second sub-time period; (refer to Figure 5 It can be seen that the increase ratio of the operating power of the water pump 10 in the first sub-hour period is 0%-18%);

[0052] T3-T5→The operating power of the water pump 10 is slowly increased to the third operating power within the third sub-time period, and operates at the third operating power for the fourth sub-time period; (refer to Figure 5 It can be seen that the operating power of the water pump 10 is increased by 18%-22% during the third sub-hour period);

[0053] T5-T6→The operating power of the water pump 10 is rapidly increased to the first operating power within the fourth preset time period, and operates at the first operating power for the second preset time period; (refer to Figure 5 It can be seen that the increase ratio of the operating power of the water pump 10 in the fourth preset time period is 22%-100%);

[0054] T6-T9→The operating power of the water pump 10 is rapidly reduced to the third operating power within the fifth sub-hour period, and the constant power operation is maintained at the third operating power; (refer to Figure 5 It can be seen that the reduction ratio of the operating power of the water pump 10 in the fifth sub-hour period is 100%-22%);

[0055] T9-T10→The water pump 10 maintains constant power operation at the third operating power; (refer to Figure 5 It can be seen that the reduction ratio of the operating power of the water pump 10 is 22%);

[0056] T10-T14→the operating power of the water pump 10 is rapidly reduced to the fourth operating power within the seventh sub-hour period, and is operated at the fourth operating power for the eighth sub-hour period; (refer to Figure 5 It can be seen that the reduction ratio of the operating power of the water pump 10 in the seventh sub-hour period is 22%-8%);

[0057] T14→The operating power of the water pump 10 is reduced to stop working within the ninth sub-hour period and is in a closed state.

[0058] like Figures 4 to 6 As shown, the working sequence of the water diverter valve 20 is:

[0059] T0-T2→The water diversion valve 20 does not work; (the number of steps of the stepping motor is 0) (the brush ring pipe 40 is in the open state, and only the brush ring pipe 40 discharges water);

[0060] T2-T4→Control the water diversion valve 20 to switch the water path for the first time (the valve plate 21 is located between the water inlet of the brush ring pipe 40 and the water inlet of the main flushing pipe 30); (the number of steps of the stepper motor is 180);

[0061] T4-T7→The water diversion valve 20 does not work; (the number of steps of the stepper motor remains at 180 steps) (the brush ring pipe 40 and the main flushing pipe 30 discharge water at the same time);

[0062] T7-T8→Control the water diversion valve 20 to switch the water circuit for the second time (the valve plate 21 closes the water inlet of the main flushing pipe 30); (the number of steps of the stepper motor is 0);

[0063] T8-T11→The water diverter valve 20 does not work; (the number of steps of the stepper motor is 0) (only the brush ring pipe 40 discharges water);

[0064] T11-T12→control the water diversion valve 20 to switch the water path for the third time (the valve plate 21 switches to the side of the brush ring pipe 40 and forms an air suction gap): (the number of steps of the stepping motor is 220 steps);

[0065] T12-T13→water diverter valve 20 does not work; (the number of steps of the stepper motor remains at 220 steps);

[0066] T13-T15→The water diverter valve 20 is reset. (The number of steps of the stepper motor is 0).

[0067] like Figure 4 As shown, the working sequence of the water inlet valve 50 is:

[0068] T0-T1→water inlet valve 50 does not work;

[0069] T1-T16→water inlet valve 50;

[0070] T16→The water inlet valve 50 stops the water inlet.

[0071] The specific embodiments are described in detail as follows:

[0072] like Figure 5 and Figure 6 As shown, during the time period of the first preset time period of the water pump 10, the operating power of the water pump 10 is increased at least twice; there is also a fourth preset time period between the first preset time period and the second preset time period, and the operating power of the water pump 10 is increased to the first operating power during the fourth preset time period; any increase ratio of the operating power of the water pump 10 during the first preset time period is smaller than the increase ratio of the operating power of the water pump 10 during the fourth preset time period. In this way, it is ensured that the water pump 10 can operate at the maximum operating power during the process of the brush ring pipe 40 and the main flushing pipe 30 discharging water at the same time.

[0073] like Figure 5 and Figure 6 As shown, the first preset duration includes the first sub-duration, the second sub-duration, the third sub-duration, and the fourth sub-duration in sequence; the operating power of the water pump 10 is increased to the second operating power within the first sub-duration, and operates at the second operating power for the second sub-duration; the operating power of the water pump 10 continues to increase to the third operating power within the third sub-duration, and operates at the third operating power for the fourth sub-duration; wherein, the start time point of the first waterway switching of the water diverter valve 20 is within the second sub-duration, and the completion time point of the first waterway switching of the water diverter valve 20 is within the third sub-duration. In this way, the operating power of the water pump 10 is gradually increased, and the pumping reliability of the water pump 10 is ensured.

[0074] like Figure 5 and Figure 6 As shown, during the period of the third preset time period of the water pump 10, the operating power of the water pump 10 is reduced at least twice; there is also a fourth preset time period between the first preset time period and the second preset time period, and the operating power of the water pump 10 is increased to the first operating power during the period of the fourth preset time period; the reduction ratio of the operating power of the water pump 10 from the first operating power to the third operating power during the period of the third preset time period is equal to the increase ratio of the operating power of the water pump 10 during the period of the fourth preset time period. In this way, it is ensured that the operating power of the water pump 10 can be gradually reduced, and the pumping reliability of the water pump 10 is ensured.

[0075] like Figure 5 and Figure 6As shown, the third preset duration includes the fifth sub-duration, the sixth sub-duration, the seventh sub-duration, the eighth sub-duration, and the ninth sub-duration in sequence; the operating power of the water pump 10 is reduced to the third operating power during the fifth sub-duration, and is operated at the third operating power for the sixth sub-duration; the operating power of the water pump 10 is reduced to the fourth operating power during the seventh sub-duration, and is operated at the fourth operating power for the eighth sub-duration; the operating power of the water pump 10 is reduced to stop operation during the ninth sub-duration; the reduction ratio of the operating power of the water pump 10 during the fifth sub-duration is greater than the reduction ratio of the operating power of the water pump 10 during the seventh sub-duration; and the reduction ratio of the operating power of the water pump 10 during the fifth sub-duration is greater than the reduction ratio of the operating power of the water pump 10 during the ninth sub-duration. In this way, it is ensured that the operating power of the water pump 10 can be quickly reduced in a short time.

[0076] like Figure 5 and Figure 6 As shown, the start time point of the second waterway switching of the water diverter valve 20 is within the sixth sub-hour period, and the completion time point of the second waterway switching of the water diverter valve 20 is within the sixth sub-hour period. In this way, it is ensured that the water diverter valve 20 performs the second waterway switching after the operating power of the water pump 10 is reduced to the third operating power, thereby ensuring the flushing reliability of the brush ring pipe 40.

[0077] It should be noted that in this application, the magnitude of the siphon force depends on the negative pressure in the pipeline. According to Bernoulli's theorem, the generation of negative pressure is related to the speed of water displacement in a closed environment. Bernoulli's equation P+1 / 2ρv 2 +ρgh=C, where P is the pressure at a preset point in the fluid, v is the flow rate of the fluid at the preset point, ρ is the density of the fluid, g is the acceleration of gravity, h is the height of the preset point, and C is a constant. Therefore, the present application proposes the following two embodiments to solve the above technical problems, which are as follows:

[0078] like Figure 6As shown, when the water diverter valve 20 is controlled to switch the water path for the first time, the valve plate 21 of the water diverter valve 20 rotates toward the side of the brush ring pipe 40 by a first preset angle A; the water diverter valve 20 is controlled to switch the water path for the third time within the eighth sub-hour period, so that the valve plate 21 of the water diverter valve 20 switches from the first state of only closing the main flushing pipe 30 to the third state of forming an air suction gap between the valve plate 21 of the water diverter valve 20 and the inner wall surface of the valve body located on the side of the brush ring pipe 40, so that the brush ring pipe 40 performs an air suction operation; when the water diverter valve 20 is controlled to switch the water path for the third time, the valve plate 21 of the water diverter valve 20 rotates toward the side of the brush ring pipe 40 by a second preset angle B, wherein the first preset angle A and the second preset angle B satisfy A<B. In this way, through the third water path switching of the water diverter valve 20, an air suction gap is formed between the valve plate 21 of the water diverter valve 20 and the inner wall surface of the valve body located on the side of the brush ring pipe 40, and the air suction gap is controlled to be reduced, which is conducive to the purpose of reducing the pipe air suction noise.

[0079] like Figure 5 and Figure 6 As shown, after the brush ring pipe 40 completes the air suction operation, the valve plate 21 of the water diverter valve 20 is controlled to withdraw from one side of the brush ring pipe 40 and close the main flushing pipe 30; after the water diverter valve 20 closes the main flushing pipe 30, the water diverter valve 20 is controlled to be in a stop operation state. In this way, it is ensured that the brush ring pipe 40 is flushed first in the subsequent flushing process.

[0080] like Figure 4 As shown, after the water pump 10 runs for the tenth sub-hour in the first preset time period, the water inlet valve 50 is controlled to start, so that the water inlet valve 50 performs the water tank water inlet operation; wherein, the start time point of the water tank water inlet operation is before the start time point of the water diverter valve 20 performing the first water path switching; and the end time point of the water tank water inlet operation is after the brush ring pipe 40 completes the air suction operation and the valve plate 21 of the water diverter valve 20 exits the brush ring pipe 40. In this way, it is ensured that the water inlet valve 50 can fill the water tank 60 with water in time, ensuring the reliability of subsequent flushing.

[0081] It should be noted that in the present application, after the flushing is completed, the working timing of the water diverter valve 20 and the water pump 10 is controlled to adjust the gap between the valve plate 21 and the valve body of the water diverter valve 20, and the water level difference in the brush ring pipe 40 is adjusted, so as to control the air replenishment speed and air replenishment volume after the siphon in the brush ring pipe 40 is completed after the flushing is completed, thereby reducing the noise generated by the air replenishment.

[0082] It should be noted that the control logic in this application is as follows:

[0083] 1. The valve plate 21 of the water diverter valve 20 is initially located at the main flushing outlet, and the water pump 10 flushes the pipe 40 to discharge water for a period of time;

[0084] 2. Control the valve plate 21 of the water diverter valve 20 to switch between the water inlet of the brush pipe 40 and the water inlet of the main flush pipe 30, and the water pump 10 discharges water from the brush pipe 40 and the main flush pipe 30 at the same time;

[0085] 3. The valve plate 21 of the water diversion valve 20 is switched back to the water inlet of the main flushing pipe 30, and the water pump 10 discharges water from the flushing pipe 40 for a period of time;

[0086] 4. After flushing, the central hole 81 of the filter 80 is used to ensure the smoothness of the air path for air replenishment and noise reduction;

[0087] 5. After flushing is completed, the purpose of noise reduction is achieved by increasing the working sequence of the water diversion valve 20 and the water pump 10.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0089] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0090] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0091] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0092] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0093] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling noise reduction of a toilet, characterized in that: include: Controlling the water pump (10) to start, and after running for a first preset time, increasing its operating power to a first operating power; after the water pump (10) runs for a second preset time at the first operating power, reducing its operating power within a third preset time period until the operation stops; In the time period from when the water pump (10) is started to when it stops operating, the water diversion valve (20) is controlled to perform a first water path switch in the time period of the first preset time length, so that the valve plate (21) of the water diversion valve (20) switches from a first state of only closing the main flushing pipeline (30) to a second state of simultaneously opening the brush ring pipeline (40) and the main flushing pipeline (30); The water diversion valve (20) is controlled to perform a second water path switching within the third preset time period, so that the valve plate (21) of the water diversion valve (20) is switched from the second state to the first state.

2. The noise reduction control method according to claim 1, characterized in that: When the water diversion valve (20) is controlled to perform the first water path switching and the valve plate (21) of the water diversion valve (20) is in the second state, The first connecting cross-sectional area S1 of the first connecting point between the water outlet of the water diversion valve (20) and the water inlet of the brush ring pipe (40) and the second connecting cross-sectional area S2 of the second connecting point between the water outlet of the water diversion valve (20) and the water inlet of the main flushing pipe (30) satisfy: S1=S2.

3. The noise reduction control method according to claim 1, characterized in that: During the period of time when the water pump (10) operates for the first preset time period, the operating power of the water pump (10) is increased at least twice; There is also a fourth preset time period between the first preset time period and the second preset time period, and the operating power of the water pump (10) is increased to the first operating power within the time period of the fourth preset time period; Any increase ratio of the operating power of the water pump (10) within the first preset time period is smaller than the increase ratio of the operating power of the water pump (10) within the fourth preset time period.

4. The noise reduction control method according to claim 3, characterized in that: The first preset duration includes, in sequence, a first sub-duration, a second sub-duration, a third sub-duration, and a fourth sub-duration; The operating power of the water pump (10) is increased to a second operating power within the first sub-duration, and the water pump (10) is operated at the second operating power for the second sub-duration; The operating power of the water pump (10) continues to be increased to a third operating power during the third sub-duration, and operates at the third operating power for the fourth sub-duration; The start time point of the first water path switching by the water diversion valve (20) is within the second sub-time period, and the completion time point of the first water path switching by the water diversion valve (20) is within the third sub-time period.

5. The noise reduction control method according to claim 1, characterized in that: During the time period in which the water pump (10) operates for the third preset time period, the operating power of the water pump (10) is reduced at least twice; There is also a fourth preset time period between the first preset time period and the second preset time period, and the operating power of the water pump (10) is increased to the first operating power within the time period of the fourth preset time period; The ratio of the reduction of the operating power of the water pump (10) from the first operating power to the third operating power during the time period of the third preset time length is equal to the ratio of the increase of the operating power of the water pump (10) during the time period of the fourth preset time length.

6. The noise reduction control method according to claim 5, characterized in that: The third preset duration includes, in sequence, a fifth sub-duration, a sixth sub-duration, a seventh sub-duration, an eighth sub-duration, and a ninth sub-duration; The operating power of the water pump (10) is reduced to the third operating power during the fifth sub-time period, and is operated at the third operating power for the sixth sub-time period; The operating power of the water pump (10) is reduced to a fourth operating power during the seventh sub-period, and is operated at the fourth operating power for the eighth sub-period; The operating power of the water pump (10) is reduced to stop operating during the ninth sub-hour period; The reduction ratio of the operating power of the water pump (10) during the fifth sub-time period is greater than the reduction ratio of the operating power of the water pump (10) during the seventh sub-time period; and The reduction ratio of the operating power of the water pump (10) in the fifth sub-time period is greater than the reduction ratio of the operating power of the water pump (10) in the ninth sub-time period.

7. The noise reduction control method according to claim 6, characterized in that: The start time point of the second water path switching by the water diversion valve (20) is within the sixth sub-time period, and the completion time point of the second water path switching by the water diversion valve (20) is within the sixth sub-time period.

8. The noise reduction control method according to claim 6, characterized in that: When controlling the water diversion valve (20) to perform the first water path switching, the valve plate (21) of the water diversion valve (20) rotates toward one side of the brush ring pipe (40) by a first preset angle A; Controlling the water diversion valve (20) to perform a third water path switching within the eighth sub-hour period, so that the valve plate (21) of the water diversion valve (20) switches from a first state in which the main flushing pipe (30) is only closed to a third state in which an air suction gap is formed between the valve plate (21) of the water diversion valve (20) and an inner wall surface of a valve body located on one side of the brush ring pipe (40), so that the brush ring pipe (40) performs an air suction operation; When controlling the water diversion valve (20) to perform the third water channel switching, the valve plate (21) of the water diversion valve (20) rotates toward one side of the brush ring pipe (40) by a second preset angle B, wherein the first preset angle A and the second preset angle B satisfy A<B.

9. The noise reduction control method according to claim 8, characterized in that: After the brush ring pipe (40) completes the air suction operation, the valve plate (21) of the water diversion valve (20) is controlled to withdraw from one side of the brush ring pipe (40) and close the main flushing pipe (30); After the water diversion valve (20) closes the main flushing pipeline (30), the water diversion valve (20) is controlled to be in a stopped operation state.

10. The noise reduction control method according to claim 9, characterized in that: After the water pump (10) runs for a tenth sub-hour within the first preset time period, the water inlet valve (50) is controlled to start, so that the water inlet valve (50) performs a water tank water filling operation; The start time of the water tank water filling operation is before the start time of the water diversion valve (20) performing the first water path switching; and The end time point of the water tank water intake operation is located after the brush ring pipe (40) completes the air intake operation and the valve plate (21) of the water diversion valve (20) exits the brush ring pipe (40) and the end time point of the exit.

11. A toilet, characterized in that: The toilet implements the noise reduction control method according to any one of claims 1 to 10, and the toilet comprises: A toilet body, the toilet body having a sewage discharge cavity; A water pump (10) and a water tank (60), wherein the water inlet of the water pump (10) is in communication with the water outlet of the water tank (60), and the water outlet of the water pump (10) is in communication with a water outlet pipe; a brush ring pipe (40) and a main flushing pipe (30), wherein the brush ring pipe (40) and the main flushing pipe (30) are connected to a water outlet pipe (70) via a water diversion valve (20), the brush ring pipe (40) is used to spray water onto the wall surface of the sewage discharge chamber, and the main flushing pipe (30) is used to supply water to the sewage discharge chamber; A filter screen (80) is arranged in the brush ring pipe (40), and the filter screen (80) is located between the water inlet and the water outlet of the brush ring pipe (40).

12. The toilet according to claim 11, characterized in that: The filter screen (80) has a central hole (81), and the cross-sectional area of ​​the hole section of the central hole (81) accounts for 1 / 4 of the cross-sectional area of ​​the pipe section of the brush ring pipe (40).

13. The toilet according to claim 11, characterized in that: The toilet also includes: A water inlet valve (50), the water inlet valve (50) being in communication with the water inlet of the water tank (60) so as to provide water inlet to the water tank (60).

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