A noise-reducing toilet flushing method and toilet

Abstract

The application discloses a noise reduction toilet flushing method and a toilet. The toilet flushing method comprises the following steps: a brushing step S2, a circuit board controls the power of a water pump as P2, the duration is from T1 to T2, and the sewage pipe has formed a siphon at T2; a siphon step S3, which comprises the following steps: S31, the circuit board controls the power of the water pump as P3, the duration is from T2 to T3, wherein P3<=P2; S32, the circuit board controls the power of the water pump as P4, the duration is from T3 to T4, wherein P4>P3, and the water level L1 in a toilet bowl is close to but not lowered to the highest position L2 of the inlet of the sewage pipe at T3; S33, the circuit board controls the power of the water pump to gradually decrease from P4 to P5, and the duration is from T4 to T5, T5 is the time when the siphon of the sewage pipe is basically completed; and a water supplementing step S4, the circuit board controls the power of the water pump as P5, the duration is from T5 to T6, and the water pump is turned off at T6. The power of the water pump is controlled, so that the flushing noise can be effectively reduced, and the use experience is good.

Description

Technical Field

[0001] This invention relates to the field of toilet technology, and in particular to a noise-reducing toilet flushing method and a toilet. Background Technology

[0002] Currently, the smart toilet market offers many pump-flush toilets (that is, toilets that use a pump to flush water), which generally fall into the following two categories: Option 1: Use a pump combined with an electronic water distribution valve to control the switching of the flushing water path to achieve the switching between top flush and bottom flush (i.e., switching the water output from the top flush outlet and the bottom flush outlet of the toilet).

[0003] Option 2: Control the upstroke and downstroke separately using two pumps to switch the order of upstroke and downstroke.

[0004] Existing technologies either require a pump combined with an electronic water distribution valve, or two pumps, both of which are costly and noisy. Therefore, the applicant previously filed a Chinese invention patent application, publication number CN121138409A, entitled "A Toilet Flushing Device and Flushing Method Thereof," which has a simpler structure, lower cost, and can improve flushing noise to some extent. However, with increasing public concern about noise issues, this invention was developed to further reduce toilet flushing noise. Summary of the Invention

[0005] Through extensive experimental testing, the inventors discovered that the main source of toilet flushing noise occurs during the siphon flushing process. As the siphon is about to end, a noticeable gurgling sound is heard in the drain pipe, resulting in significant flushing noise. The reason for this noticeable gurgling sound in the drain pipe at the end of the siphon process, according to existing technology, is that a large amount of air is instantly drawn into the drain pipe, causing the siphon to break.

[0006] The present invention aims to address the problem that noise in the background technology still needs further improvement, and provides a noise-reducing toilet flushing method and toilet, which can further effectively reduce flushing noise by controlling the power of the water pump, greatly improving the user experience.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A noise-reducing toilet flushing method is provided for controlling the flushing of a toilet flushing device. The toilet flushing device includes a toilet body, a water tank, a water pump, a water distribution pipe, and a circuit board. The toilet body has a bowl and a drain pipe. The bowl has an upper flushing port and a lower flushing port positioned below the upper flushing port. The water distribution pipe includes an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the water pump via a first connecting pipe. The first outlet is connected to the upper flushing port via a second connecting pipe. The second outlet is connected to the lower flushing port via a third connecting pipe. The inlet of the water pump is connected to the water tank. The circuit board is electrically connected to the water pump to control the pump's opening and closing and its power level. The toilet flushing method includes the following steps in sequence: S2, the brushing step: the circuit board controls the power of the water pump to P2 and continues for a duration from T1 to T2. At T2, the sewage pipe has formed a siphon (either just formed or after the siphon has formed). S3, the siphon step, includes 3 sub-steps: S31, First siphon step: The circuit board controls the power of the water pump to P3 and the duration is from T2 to T3, where P3≤P2; S32, Second siphon step: The circuit board controls the power of the water pump to P4 and the duration is from T3 to T4, where P4 > P3. At T3, the water level L1 in the toilet bowl is close to but has not dropped to the highest position L2 of the sewage pipe inlet. S33, the third siphon step, the circuit board controls the power of the water pump to gradually decrease from P4 to P5, and the duration is from T4 to T5. T5 is the moment when the sewage pipe roughly ends the siphon (here, "roughly end the siphon" can be the moment when the siphon just ends, or it can be a moment before or a moment after the end of the siphon). S4, Water Replenishment Step: The circuit board controls the power of the water pump to P5 and continues to replenish water to the toilet bowl from T5 to T6. The water pump is turned off at T6.

[0008] In some preferred embodiments, step S1 is included before step S2: S1, the air venting step of the connecting pipe, the circuit board controls the power of the water pump to P1, P1 < P2, and the duration is from T0 to T1. At T1, the water flow is basically just flowing out from the upper flushing port and the lower flushing port.

[0009] In some preferred embodiments, in step S2, the flow rate of the upper flushing port is controlled to be greater than the flow rate of the lower flushing port; in step S31, the flow rate of the lower flushing port is controlled to be greater than the flow rate of the upper flushing port.

[0010] In some preferred embodiments, the diameter of the lower flushing port is configured to be 10mm-20mm, and the diameter of the upper flushing port is configured to be 5mm-8mm.

[0011] In some preferred embodiments, in step S2, the flow rate of the lower flushing port is less than 0.5 L / s.

[0012] In some preferred embodiments, the water level L1 in the toilet rises during the time period T1 to T2.

[0013] In some preferred embodiments, during the time period T3 to T4, the water level L1 in the toilet bowl is higher than the highest position L2 at the inlet of the sewage pipe, and the time when the water level L1 in the toilet bowl is lower than the highest position L2 at the inlet of the sewage pipe is within the time period T4 to T5.

[0014] In some preferred embodiments, in step S33, the circuit board controls the power of the water pump to gradually decrease from P4 to P5 in a linear or non-linear manner; at time T5, the toilet drain pipe essentially stops discharging water.

[0015] In some preferred embodiments, the duration of step S2 is less than the duration of step S1, the duration of step S2 is less than the duration of step S31, and the duration of step S32 is less than the duration of step S33.

[0016] Furthermore, the present invention also provides a toilet, including a toilet flushing device. The toilet flushing device includes a toilet body, a water tank, a water pump, a water distribution pipe, and a circuit board. The toilet body is provided with a toilet bowl and a drain pipe. The toilet bowl is provided with an upper flushing port and a lower flushing port located below the upper flushing port. The water distribution pipe includes an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the water pump through a first connecting pipe. The first outlet is connected to the upper flushing port through a second connecting pipe. The second outlet is connected to the lower flushing port through a third connecting pipe. The inlet of the water pump is connected to the water tank. The circuit board is electrically connected to the water pump to control the opening and closing and power of the water pump. The toilet flushing device uses any of the toilet flushing methods described above to control the operation of the water pump.

[0017] In some preferred embodiments: a first diversion port and a second diversion port are formed inside the water distribution pipe; the water flow from the inlet is connected to the first outlet through the first diversion port; the water flow from the inlet is connected to the second outlet through the second diversion port; the water path from the first diversion port to the upper flushing port is the upper flushing water path; the water path from the second diversion port to the lower flushing port is the lower flushing water path; the minimum flow cross-sectional area of ​​the upper flushing water path is smaller than the minimum flow cross-sectional area of ​​the lower flushing water path; and the length of the upper flushing water path is smaller than the length of the lower flushing water path.

[0018] By adopting the above technical solution, the present invention can achieve the following technical effects: The main improvement of this invention is that the siphon step S3 is divided into three sub-steps. By controlling the power of the water pumps in these three sub-steps, the noise of toilet flushing can be further reduced. Specifically: In the first siphon step S31, since the drain pipe has formed a siphon, the water and waste in the toilet can be discharged through the siphon force of the drain pipe. At this time, the power of the water pump is controlled to P3, and P3≤P2, or even P3 can be selected to be zero, so that there will be no large siphon noise in step S31. In the second siphon step S32, the power of the water pump is controlled to P4, and the duration is from T3 to T4, where P4 > P3. At T3, the water level L1 in the toilet bowl is close to but has not dropped to the highest position L2 of the sewage pipe inlet. At T3, the water flow in the sewage pipe is basically full and the flow rate is relatively fast. At this time, the power of the water pump is increased from P3 to P4, increasing the power of the water pump, so that the amount of water entering the toilet bowl is also increased accordingly, so as to quickly replenish the water in the toilet bowl. This is because the inventors found that if the flushing water is not replenished quickly and in time, once the water level L1 in the toilet bowl drops below the highest position L2 of the sewage pipe inlet, a large amount of air will be sucked into the sewage pipe by the siphon force, causing the siphon water flow in the sewage pipe, which is basically full, to suddenly stop, and a "gurgling" sound will be emitted, just like in the prior art. Therefore, by setting the second siphon step S32, the present invention can effectively avoid the large noise generated by the sudden breakage of the siphon in the prior art (this noise is the noise peak of the entire rinsing process). In the later stage of the siphon, by replenishing water, the siphon force is buffered, and a large amount of air is prevented from being suddenly drawn into the drain pipe (a small amount of air can be allowed to enter the drain pipe), which has a significant noise reduction effect. In the third siphon step S33, the power of the water pump is controlled to gradually decrease from P4 to P5. In this stage, by gradually reducing the power of the water pump, the amount of water added can be gradually reduced in the siphon tail stage. On the one hand, this can avoid noise caused by intermittent water flow. On the other hand, the added water flow can make the siphon force gradually decrease instead of suddenly dropping to zero, which plays a buffering role and further reduces the noise.

[0019] This invention divides the siphon step S3 into three sub-steps, achieving noise reduction throughout the entire siphon stage, thereby significantly reducing both the maximum and average noise levels during the entire rinsing process. The invention is ingeniously conceived and very easy to control; simply adjusting the pump power at the appropriate times is sufficient, without increasing costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a perspective assembly diagram of a toilet flushing device according to an embodiment of the present invention; Figure 2 This is a perspective sectional view of a toilet flushing device according to an embodiment of the present invention; Figure 3 This is a partial schematic diagram of a toilet flushing device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a water distribution pipe according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of a water distribution pipe according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the relationship between the time and the power of the water pump in a toilet flushing method according to an embodiment of the present invention. Figure 7 This is a schematic diagram of the state of the present invention at time T1 (the water flow is basically just flowing out from the upper flushing port and the lower flushing port); Figure 8 This is a schematic diagram of the state of the present invention at time T2 (the water level L1 in the toilet rises). Figure 9 This is a schematic diagram of the state of the present invention at T3 (during the siphon process, the water level L1 in the toilet bowl is close to but has not dropped to the highest position L2 of the inlet of the sewage pipe 16). Figure 10 This is a schematic diagram of the state of the present invention at T4 (during the siphon process, the water level L1 in the toilet bowl is close to but has not dropped to the highest position L2 of the inlet of the sewage pipe 16). Figure 11 This is a schematic diagram of the state of the present invention at T5 (the water level L1 in the toilet bowl drops to the highest position L2 at the inlet of the sewage pipe 16 under the buffer of water replenishment, and air enters the sewage pipe; the circle in the figure represents air and the short horizontal line represents water). Figure 12 This is a schematic diagram of the state of the present invention at T6 (rinsing completed); Figure 13 This is a schematic diagram showing the relationship between the time and the power of the water pump in a toilet flushing method according to another embodiment of the present invention; Figure 14 This is a schematic diagram showing the relationship between the time and the power of the water pump in another embodiment of the toilet flushing method of the present invention; Figure 15 This is a schematic diagram illustrating the relationship between the time and the power of the water pump in a toilet flushing method according to another embodiment of the present invention.

[0022] icon: 1-Toilet body; 11-Upper flush outlet; 12-Lower flush outlet; 13-Upper flush connector; 14-Lower flush connector; 15-Toilet bowl; 16-Drain pipe; 2-Water tank; 3-Water pump; 31-Water pump inlet pipe; 4-Diverter pipe; 41-Inlet; 42-First outlet; 43-Second outlet; 45-First branch outlet; 46-Second branch outlet; 6-Connecting pipe; 61-First connecting pipe; 62-Second connecting pipe; 63-Third connecting pipe; 7-Inlet valve; L1 - Water level in the toilet bowl; L2 - The highest point of the sewage pipe inlet; H - Water seal height. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The terms “top,” “bottom,” “upper,” “lower,” “left,” “right,” “front,” “back,” and similar expressions used in this document are for illustrative purposes only. The terms “first,” “second,” etc., are only used to distinguish different objects and should not be construed as indicating or implying relative importance or the quantity, specific order, or primary or secondary relationship of the indicated technical features. The term “several” means one or more, and “multiple” means two or more, unless otherwise explicitly specified.

[0025] Combination Figures 1 to 12The first preferred embodiment of the present invention provides a noise-reducing toilet flushing method for controlling the flushing of a toilet flushing device. The toilet flushing device includes a toilet body 1, a water tank 2, a water pump 3, a water distribution pipe 4, and a circuit board (not shown). The toilet body 1 has a bowl 15 and a drain pipe 16. The bowl 15 has an upper flushing port 11 and a lower flushing port 12 positioned below the upper flushing port 11. Specifically, an upper flushing connector 13 is fixedly installed at the upper part of the bowl 15 of the toilet body 1, and the outlet of the upper flushing connector 13 forms the upper flushing port 11; a lower flushing connector 14 is fixedly installed at the bottom of the bowl of the toilet body 1, and the outlet of the lower flushing connector 14 forms the lower flushing port 12. The water distribution pipe 4 includes an inlet 41, a first outlet 42, and a second outlet 43. Each outlet of the water distribution pipe 4 is connected to the water pump 3, the upper flushing connector 13, and the lower flushing connector 14 via a connecting pipe 6. Specifically, the inlet 41 of the water distribution pipe 4 is connected to the outlet of the water pump 3 via the first connecting pipe 61, the first outlet 42 is connected to the upper flushing connector 11 via the second connecting pipe 62, and the second outlet 43 is connected to the lower flushing connector 12 via the third connecting pipe 63. The inlet of the water pump 3 is connected to the water tank 2 via the water pump inlet pipe 31. In this embodiment, the water tank 2 is also equipped with an inlet valve 7, which can adopt a known existing structure and is used to replenish water to the water tank 2. The circuit board is electrically connected to the water pump 3 to control the opening and closing and power of the water pump 3. The circuit board can be installed inside the toilet seat assembly (not shown) and is electrically connected to the water pump 3 via wires.

[0026] The toilet flushing method of the present invention includes the following steps in sequence: S2, the brushing step, the circuit board controls the power of the water pump 3 to P2, and the duration is from T1 to T2. At T2, the drain pipe 16 has formed a siphon (either just formed or after the siphon has formed). S3, the siphon step, includes 3 sub-steps: S31, First siphon step: The circuit board controls the power of the water pump 3 to P3 and the duration is from T2 to T3, where P3≤P2; S32, Second siphon step, the circuit board controls the power of the water pump 3 to P4 and the duration is from T3 to T4, where P4 > P3, and at T3 the water level L1 in the toilet bowl 15 is close to but has not dropped to the highest position L2 of the inlet of the sewage pipe 16. S33, Third siphon step: The circuit board controls the power of the water pump 3 to gradually decrease from P4 to P5, and the duration is from T4 to T5. T5 is the moment when the drain pipe 16 roughly ends the siphon (here, "roughly end the siphon" can be the moment when the siphon just ends, or a moment before or after the moment when the siphon ends. For example, if the toilet flushing device just ends the siphon at the 6th second, T5 can be the 6th second, or the 5.5th second, 5.7th second, 5.9th second, 6.1st second, 6.3rd second, or 6.5th second, etc.). S4, Water Replenishment Step: The circuit board controls the power of the water pump 3 to P5, and maintains this power for a duration from T5 to T6 to replenish water to the toilet bowl 15. At T6, the water pump is turned off, and the water level L1 in the toilet bowl 15 rises to the predetermined height (i.e., the water seal height H, see...). Figure 7 and Figure 12 ).

[0027] The main improvement of this invention is that the siphon step S3 is divided into three sub-steps. By controlling the power of the water pump 3 in these three sub-steps, the noise of toilet flushing can be further reduced. Specifically: In the first siphon step S31, since the drain pipe 16 has formed a siphon, the water and sewage in the toilet 15 can be discharged through the siphon force of the drain pipe 16. At this time, the power of the water pump 3 is controlled to P3, and P3≤P2, or even P3 can be selected to be zero, so that there will be no large siphon noise in step S31. In the second siphon step S32, the power of the water pump 3 is controlled to P4, and the duration is from T3 to T4, where P4 > P3. At T3, the water level L1 in the toilet bowl 15 is close to but has not dropped to the highest position L2 of the inlet of the sewage pipe 16. At T3, the water flow in the sewage pipe 16 is basically full and the flow rate is relatively fast. At this time, the power of the water pump 3 is increased from P3 to P4, increasing the power of the water pump 3, so that the amount of water entering the toilet bowl 15 also increases accordingly, so as to quickly replenish the water in the toilet bowl 15. This is because the inventors found that if the flushing water is not replenished in time, once the water level L1 in the toilet bowl 15 drops below the highest position L2 of the inlet of the sewage pipe 16, a large amount of air will be sucked into the sewage pipe 16 by the siphon force, causing the siphon water flow in the sewage pipe 16, which is basically full, to suddenly stop, and a "gurgling" sound will be emitted, just like in the prior art. Therefore, by setting the second siphon step S32, the present invention can effectively avoid the large noise generated by the sudden breakage of the siphon in the prior art (this noise is the noise peak of the entire rinsing process). In the later stage of the siphon, by replenishing water, the siphon force is buffered, and a large amount of air is prevented from being suddenly drawn into the drain pipe 16 (a small amount of air can be allowed to enter the drain pipe 16), which has a significant noise reduction effect. In the third siphon step S33, the power of the water pump 3 is controlled to gradually decrease from P4 to P5. In this stage, by gradually reducing the power of the water pump 3, the amount of water added can be gradually reduced in the siphon tail stage. On the one hand, this can avoid the noise caused by the intermittent water flow. On the other hand, the added water flow can make the siphon force gradually decrease instead of suddenly dropping to zero, which plays a buffering role and further reduces the noise.

[0028] This invention divides the siphon step S3 into three sub-steps, achieving noise reduction throughout the entire siphon stage, thereby significantly reducing both the maximum and average noise levels during the entire rinsing process. The invention is ingeniously conceived and very easy to control; simply adjusting the power of the water pump 3 at the appropriate times is sufficient, without increasing costs.

[0029] In some preferred embodiments, step S1 is included before step S2: S1, the air venting step of the connecting pipe, the circuit board controls the power of the water pump 3 to P1, P1 < P2, and the duration is from T0 to T1. At T1, the water flow is basically just flowing out from the upper flushing port 11 and the lower flushing port 12.

[0030] By adding step S1 before step S2, and using a low-power pump P1 to pump water, the water flow first roughly expels the air from the first connecting pipe 61, the second connecting pipe 62, and the third connecting pipe 63. Then, the power of the water pump is increased to P2. This effectively avoids the "plop" noise that occurs when the water flows out of the upper flushing port 11 and the lower flushing port 12, thereby reducing the noise before the siphon stage and further improving the noise problem of the entire flushing process.

[0031] In this embodiment, see Figure 6 To further reduce noise, P3 should be controlled to be less than P2. P3 can even be set to 0, as this ensures that a siphon has formed, allowing water and waste in the toilet bowl to be discharged through the drain pipe. (This is understandable; see [link to relevant documentation]). Figure 13 Alternatively, P3 can be configured as P3=P2, which can help enhance the siphon force to some extent.

[0032] In some preferred embodiments, in step S2, the flow rate of the upper flushing port 11 is controlled to be greater than the flow rate of the lower flushing port 12; in step S31, the flow rate of the lower flushing port 12 is controlled to be greater than the flow rate of the upper flushing port 11.

[0033] In some preferred embodiments, the lower rinsing port 12 is circular in shape, which prevents the water pressure from being too high and avoids excessive water flow during the brush ring rinsing process, ensuring that the water mainly flows out from the upper rinsing port 11. The diameter of the lower rinsing port 12 is configured to be 10mm-20mm, and the diameter of the upper rinsing port 11 is configured to be 5mm-8mm. Designing the diameter of the lower rinsing port 12 to be larger than that of the upper rinsing port 11 further effectively ensures that during the brush ring rinsing process, the water mainly flows out from the upper rinsing port 11, while only a small portion (or even none) flows out from the lower rinsing port 12, resulting in a larger proportion of water flowing out from the upper rinsing port 11.

[0034] In some preferred embodiments, the flow rate of the lower rinsing port 12 is less than 0.5 L / s in step S2. Controlling the flow rate of the lower rinsing port to less than 0.5 L / s in the brushing step results in better rinsing performance.

[0035] In some preferred embodiments, the water level L1 in the toilet bowl 15 rises during the time period T1 to T2.

[0036] In some preferred embodiments, during the time period T3 to T4, the water level L1 in the toilet bowl 15 is higher than the highest position L2 of the inlet of the sewage pipe 16, and the time when the water level L1 in the toilet bowl 15 is lower than the highest position L2 of the inlet of the sewage pipe 16 is within the time period T4 to T5.

[0037] In some preferred embodiments, the duration of step S2 is less than the duration of step S1, the duration of step S2 is less than the duration of step S31, and the duration of step S32 is less than the duration of step S33.

[0038] In this embodiment, see Figure 6 In step S33, the circuit board controls the power of the water pump 3 to gradually decrease linearly from P4 to P5; at time T5, the toilet's drain pipe 16 essentially stops discharging water. In other embodiments, see... Figure 14 and Figure 15 Alternatively, the power of the water pump 3 can be controlled to gradually decrease from P4 to P5 in a non-linear (curved) manner.

[0039] In this embodiment, specifically, time intervals are: T1 = 1.5 seconds, T2 = 2.2 seconds, T3 = 3.5 seconds, T4 = 4 seconds, T5 = 6 seconds, and T6 = 8 seconds; P1 = 13 watts, P2 = 26 watts, P3 = 18 watts, P4 = 30 watts, and P5 = 15 watts. It is understood that the specific values ​​for T1 to T6 and P1 to P5 are not limited to these values ​​and can be selected as needed. This embodiment uses noise testing according to standards GB / T 6952-2015 and GB / T 3768-2017, with L50 = 25.5 dB, which is far less than the national standard requirement that L50 should not exceed 55 dB(A).

[0040] In addition, the present invention also provides a toilet, including a toilet flushing device. The specific structure of the toilet flushing device can be referred to the toilet flushing device disclosed in the prior application patent CN121138409A. Specifically, it includes a toilet body 1, a water tank 2, a water pump 3, a water distribution pipe 4, and a circuit board. The toilet body 1 is provided with a toilet bowl 15 and a sewage pipe 16. The toilet bowl 15 is provided with an upper flushing port 11 and a lower flushing port 12 located below the upper flushing port 11. The water distribution pipe 4 includes an inlet 41, a first outlet 42, and a second outlet 43. The inlet 41 is connected to the outlet of the water pump 3 through a first connecting pipe 61. The first outlet 42 is connected to the upper flushing port 11 through a second connecting pipe 62. The second outlet 43 is connected to the lower flushing port 12 through a third connecting pipe 63. The inlet of the water pump 3 is connected to the water tank 2. The circuit board is electrically connected to the water pump 3 to control the opening and closing and power of the water pump 3. The toilet flushing device uses any of the above-mentioned toilet flushing methods to control the operation of the water pump 3.

[0041] In some preferred embodiments: a first diversion port 45 and a second diversion port 46 are formed in the water distribution pipe 4. The water flow from the inlet 41 is connected to the first outlet 42 through the first diversion port 45, and the water flow from the inlet 41 is connected to the second outlet 43 through the second diversion port 46. The water path from the first diversion port 45 to the upper flushing port 11 is the upper flushing water path, and the water path from the second diversion port 46 to the lower flushing port 12 is the lower flushing water path. The minimum flow cross-sectional area of ​​the upper flushing water path is smaller than the minimum flow cross-sectional area of ​​the lower flushing water path, and the length of the upper flushing water path is smaller than the length of the lower flushing water path.

[0042] In some preferred embodiments: the connecting pipes 6 (including the first connecting pipe 61, the second connecting pipe 62, and the third connecting pipe 63) are preferably made of a soft material, such as rubber, which facilitates the installation of the water distribution pipe 4 and allows for more flexible installation positions. Similarly, the water pump inlet pipe 31 is also preferably made of a soft material, such as rubber, which facilitates the installation of the water pump 3 and allows for more flexible installation positions.

[0043] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A noise-reducing toilet flushing method for controlling the flushing of a toilet flushing device, the toilet flushing device comprising a toilet body, a water tank, a water pump, a water distribution pipe, and a circuit board. The toilet body includes a toilet bowl and a drain pipe. The toilet bowl has an upper flushing port and a lower flushing port positioned below the upper flushing port. The water distribution pipe includes an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the water pump via a first connecting pipe. The first outlet is connected to the upper flushing port via a second connecting pipe. The second outlet is connected to the lower flushing port via a third connecting pipe. The inlet of the water pump is connected to the water tank. The circuit board is electrically connected to the water pump to control the opening and closing of the water pump and its power level. The toilet flushing method includes the following steps in sequence: S2, the brushing step, the circuit board controls the power of the water pump to P2, and the duration is from T1 to T2. At T2, the sewage pipe has formed a siphon. S3, the siphon step, includes 3 sub-steps: S31, First siphon step: The circuit board controls the power of the water pump to P3 and the duration is from T2 to T3, where P3≤P2; S32, Second siphon step: The circuit board controls the power of the water pump to P4 and the duration is from T3 to T4, where P4 > P3. At T3, the water level L1 in the toilet bowl is close to but has not dropped to the highest position L2 of the sewage pipe inlet. S33, the third siphon step, the circuit board controls the power of the water pump to gradually decrease from P4 to P5, and the duration is from T4 to T5, where T5 is the moment when the sewage pipe roughly ends the siphon. S4, Water Replenishment Step: The circuit board controls the power of the water pump to P5 and continues to replenish water to the toilet bowl from T5 to T6. The water pump is turned off at T6.

2. The toilet flushing method according to claim 1, characterized in that, Before step S2, step S1 is also included: S1, the air venting step of the connecting pipe, the circuit board controls the power of the water pump to P1, P1 < P2, and the duration is from T0 to T1. At T1, the water flow is basically just flowing out from the upper flushing port and the lower flushing port.

3. The toilet flushing method according to claim 1, characterized in that, In step S2, the flow rate of the upper flushing port is controlled to be greater than the flow rate of the lower flushing port; in step S31, the flow rate of the lower flushing port is controlled to be greater than the flow rate of the upper flushing port.

4. The toilet flushing method according to claim 3, characterized in that, The diameter of the lower flushing port is configured to be 10mm-20mm, and the diameter of the upper flushing port is configured to be 5mm-8mm. In step S2, the flow rate of the lower flushing port is less than 0.5L / s.

5. The toilet flushing method according to claim 1, characterized in that, During the time period from T1 to T2, the water level L1 in the toilet bowl rises.

6. The toilet flushing method according to claim 1, characterized in that, During the time period from T3 to T4, the water level L1 in the toilet bowl is higher than the highest point L2 at the inlet of the sewage pipe, and the time when the water level L1 in the toilet bowl is lower than the highest point L2 at the inlet of the sewage pipe is within the time period from T4 to T5.

7. The toilet flushing method according to claim 1, characterized in that, In step S33, the circuit board controls the power of the water pump to gradually decrease from P4 to P5 in a linear or non-linear manner; at time T5, the toilet drain pipe basically stops discharging water.

8. The toilet flushing method according to claim 1, characterized in that, The duration of step S2 is less than the duration of step S1, the duration of step S2 is less than the duration of step S31, and the duration of step S32 is less than the duration of step S33.

9. A toilet, comprising a toilet flushing device, the toilet flushing device including a toilet body, a water tank, a water pump, a water distribution pipe, and a circuit board, the toilet body having a bowl and a drain pipe, the bowl having an upper flushing port and a lower flushing port positioned below the upper flushing port, the water distribution pipe including an inlet, a first outlet, and a second outlet, the inlet being connected to the outlet of the water pump via a first connecting pipe, the first outlet being connected to the upper flushing port via a second connecting pipe, the second outlet being connected to the lower flushing port via a third connecting pipe, the inlet of the water pump being connected to the water tank, and the circuit board being electrically connected to the water pump to control the opening and closing of the water pump and its power, characterized in that... The toilet flushing device uses the toilet flushing method described in any one of claims 1 to 8 to control the operation of the water pump.

10. The toilet according to claim 9, characterized in that: The water distribution pipe has a first branch port and a second branch port. The water flow from the inlet is connected to the first outlet through the first branch port, and the water flow from the inlet is connected to the second outlet through the second branch port. The water path from the first branch port to the upper flushing port is the upper flushing water path, and the water path from the second branch port to the lower flushing port is the lower flushing water path. The minimum flow cross-sectional area of ​​the upper flushing water path is smaller than the minimum flow cross-sectional area of ​​the lower flushing water path, and the length of the upper flushing water path is smaller than the length of the lower flushing water path.

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