Flushing method of intelligent pedestal pan and intelligent pedestal pan

Abstract

The invention provides a flushing method of an intelligent pedestal pan, which comprises the following steps: a control panel sends a brush ring instruction to drive a water diversion switching valve to open a brush ring water outlet and close a bottom flushing water outlet, and a pump starts to work for a first set time T1; the control panel sends out a strong flushing instruction to drive the water distribution switching valve to open the bottom flushing water outlet and the brush ring water outlet, the water outlet flow of the bottom flushing water outlet is distributed to be larger than the water outlet flow of the brush ring water outlet, and the pump keeps working for a second set time T2; the control panel sends a washing and flushing instruction to drive the water distribution switching valve to open the bottom flushing water outlet and the brush ring water outlet, the water outlet flow of the bottom flushing water outlet is distributed to be not larger than the water outlet flow of the brush ring water outlet, and the pump keeps working for third set time T3; and the control panel sends a water supplementing instruction to drive the water distribution switching valve to close the bottom flushing water outlet and maintain the open state of the brush ring water outlet, and the pump maintains working for fourth set time T4. By means of the technical scheme, in the flushing process of the intelligent pedestal pan, water in the trap can buffer liquid ejected out of the bottom flushing water outlet, the situation that water flow directly flushes the wall face is avoided, and therefore the purpose of reducing noise is achieved.

Description

Technical Field

[0001] The present invention relates to the field of intelligent toilets, and particularly to a flushing method for an intelligent toilet, which belongs to E03D11 / 06, E03D 1 / 28, E03D 1 / 38, and E03D 11 / 00 in the IPC classification. Background Art

[0002] Existing intelligent toilets generally adopt the jet siphon flushing and sewage discharging method. When the toilet jet siphons sewage, high-pressure water jets out from a small-diameter nozzle, forming a strong jet water flow with a large flow rate and strong cleaning power. However, when the strong jet water flow impacts, it generates relatively large noise. Especially when all the water in the siphon pipe is emptied, a cavity is formed in the toilet, and the high-speed fluid directly shoots in, causing even greater noise.

[0003] When an intelligent toilet bowl flushes, the flushing component opens the brush ring water outlet and closes the bottom flushing water outlet, and switches to a low gear for small-flow brush ring flushing. Then the flushing component opens the brush ring water outlet and the bottom flushing water outlet, and switches to a high gear for large-flow flushing. Finally, the flushing component opens the brush ring water outlet and closes the bottom flushing water outlet, and switches to the low gear again for small-flow water replenishment. After the water replenishment is completed, the flushing ends. During the entire flushing process, while the accumulated water in the toilet is drained away, it is continuously replenished, and there is always a certain amount of liquid in the toilet and the liquid level reaches a certain height, avoiding the formation of a cavity in the toilet. In this way, the water in the urinal can buffer the liquid ejected from the bottom flushing water outlet, preventing the water flow from directly hitting the wall surface, thereby achieving the purpose of noise reduction. In the prior art during large-flow flushing, the flushing component simultaneously opens the brush ring water outlet and the bottom flushing water outlet, and adjusts the pump speed to achieve the situation of forming siphon sewage discharge with a large-flow water flow. The reliability is relatively low. If the pump speed is low, it is difficult to form a siphon. If the pump speed is high, the energy consumption and noise increase.

[0004] Common knowledge and terms can be referred to in the "Mechanical Engineering Handbook" and "Electrical Engineering Handbook", the second edition published by China Machine Press in 1997, the national standard GB / T 34549 "Intelligent Toilets for Sanitary Ware", and the national standard GB / T 23131 "Electric Toilet Seats for Household and Similar Purposes". Summary of the Invention

[0005] To solve the problems mentioned above, the present invention proposes a flushing method for an intelligent toilet. The intelligent toilet includes a control board, a ceramic toilet bowl, and a flushing assembly. The ceramic toilet bowl is provided with a bottom flushing port and a brush ring port. The flushing assembly includes a water storage tank, a pump, a water distribution switching valve, a brush ring outlet pipe communicating with the brush ring port, and a bottom flushing outlet pipe communicating with the bottom flushing port. The water distribution switching valve is provided with a driving device, a brush ring outlet communicating with the brush ring outlet pipe, a bottom flushing outlet communicating with the bottom flushing outlet pipe, and a regulating member for selectively blocking the brush ring outlet and the bottom flushing outlet. The flushing method includes the following steps:

[0006] S1 The control board issues a brush ring command, driving the water distribution switching valve to open the brush ring outlet and close the bottom flushing outlet. The pump starts to work and lasts for the first set time T1.

[0007] S2 The control board issues a strong flushing command, driving the water distribution switching valve to open the bottom flushing outlet and the brush ring outlet, and distributing the water flow rate of the bottom flushing outlet to be greater than that of the brush ring outlet. The pump continues to work and lasts for the second set time T2.

[0008] S3 The control board issues a washing and flushing command, driving the water distribution switching valve to open the bottom flushing outlet and the brush ring outlet, and distributing the water flow rate of the bottom flushing outlet to be not greater than that of the brush ring outlet. The pump continues to work and lasts for the third set time T3.

[0009] S4 The control board issues a water replenishing command, driving the water distribution switching valve to close the bottom flushing outlet and maintain the opening state of the brush ring outlet. The pump continues to work and lasts for the fourth set time T4.

[0010] S5 After passing the fourth set time T4, the control board issues a stop flushing command to the flushing assembly.

[0011] Through the technical solution of the present invention, during the flushing process, when the control board executes the strong flushing command, the water distribution switching valve controls the position of the regulating member through the driving device to achieve a predetermined flow rate ratio distribution, and distributes the flow rate of the bottom flushing outlet to be greater than that of the brush ring outlet; when executing the washing and flushing command and distributing the flow rate of the bottom flushing outlet to be not greater than that of the brush ring outlet. In this way, while the accumulated water in the water seal of the ceramic toilet bowl forms a siphon and is taken away, it can also be replenished in time. There is basically a certain amount of liquid in the water seal of the toilet, avoiding the formation of a cavity in the water seal of the toilet. In this way, the water in the water seal can buffer the liquid ejected from the bottom flushing outlet, avoiding the water flow from directly hitting the wall surface, thereby achieving the purpose of noise reduction.

[0012] In some embodiments of the present invention, the first set time T1 includes the working time t11 of the pump speed-up stage and the working time t12 of the pump steady-speed stage.

[0013] Furthermore, the first set time T1 is preferably not less than 5 seconds, and the working time t11 in the pump speed-up stage is preferably not greater than 1 second.

[0014] In the start of the flushing stage, the flow rate is gradually changed by the slow rise of the pump, so that when the brush circle is performed, the problem of excessive liquid ejection speed and splashing caused by the sudden ejection of the gas remaining in the flushing component at the beginning can be avoided.

[0015] In some embodiments of the present invention, the water distribution switching valve controls the position of the regulating member through a driving device to adjust the opening degree of the bottom flushing water outlet and / or the opening degree of the brush circle water outlet, so as to realize the distribution of the water flow rate of the bottom flushing water outlet and the water flow rate of the brush circle water outlet.

[0016] Furthermore, when the control board issues a strong flushing instruction, the distribution ratio of the water flow rate of the bottom flushing water outlet and the water flow rate of the brush circle water outlet is: the proportion of the water flow rate of the bottom flushing water outlet in the total water flow rate is not less than 60%; the proportion of the water flow rate of the brush circle water outlet in the total water flow rate is not greater than 40%.

[0017] Furthermore, the second set time T2 is preferably not greater than 4 seconds, and the second set time T2 has an inverse relationship with the proportion value of the water flow rate of the bottom flushing water outlet in the total water flow rate, where:

[0018] - When the proportion of the bottom flushing water volume is ≧90%, T2 is 1.5 seconds or 2 seconds;

[0019] - When the proportion of the bottom flushing water volume is ≧80% and <90%, T2 is 2 seconds or 2.5 seconds;

[0020] - When the proportion of the bottom flushing water volume is ≧70% and <80%, T2 is 2.5 seconds to 3 seconds;

[0021] - When the proportion of the bottom flushing water volume is ≧60% and <70%, T2 is 3 seconds to 4 seconds.

[0022] The technical solution of the present invention controls the position of the regulating member through the driving device of the water distribution switching valve to adjust the opening degree of the bottom flushing water outlet and / or the opening degree of the brush circle water outlet, and realizes the distribution of the flow rate of the bottom flushing water outlet and the flow rate of the brush circle water outlet. In this way, it can accurately control that there is basically a certain amount of liquid in the water storage bend of the toilet, avoid the formation of a cavity in the water storage bend of the toilet, so that the water in the water storage bend can buffer the liquid ejected from the bottom flushing water outlet, avoid the water flow from directly hitting the wall surface, and thus achieve a better noise reduction purpose.

[0023] In some embodiments of the present invention, when the control board issues a flushing instruction, the second set time T2 is 2.5 seconds, and the distribution ratio of the water flow rate of the bottom flushing water outlet to the water flow rate of the brush ring water outlet is: the proportion of the water flow rate of the bottom flushing water outlet in the total water flow rate is 70%; the proportion of the water flow rate of the brush ring water outlet in the total water flow rate is 30%.

[0024] After the technical solution of the present invention forms a siphon in the toilet trap to flush away excrement, it can prevent the water flow of the bottom flushing from being too strong, thereby achieving a better noise reduction effect.

[0025] In some embodiments of the present invention, the intelligent toilet is also provided with a flow sensor downstream of the bottom flushing water outlet and / or the brush ring water outlet of the water distribution switching valve. The control board implements closed-loop control based on the flow data fed back by the flow sensor and combines the water flow data of the pump to dynamically adjust the second set time T2.

[0026] The flow sensor is used to sense the water flow rate of the bottom flushing water outlet and / or the brush ring water outlet, and implement dynamic adjustment of the second set time T2. In this way, the shortest duration for the toilet to form a siphon can be accurately controlled, the duration of the siphon formation noise can be controlled, and a certain amount of liquid can be maintained in the trap to prevent the formation of a cavity in the toilet trap. In this way, the water in the trap can buffer the liquid ejected from the bottom flushing water outlet, preventing the water flow from directly hitting the wall surface, thereby achieving a better noise reduction effect.

[0027] In some embodiments of the present invention, in step S3, the water distribution switching valve controls the position of the regulating member through a driving device to adjust the opening degree of the bottom flushing water outlet and / or the opening degree of the brush ring water outlet, so that the water output of the bottom flushing is equal to the water output of the brush ring, and the third set time T3 is not less than 3 seconds.

[0028] This design can replenish water in time to prevent the formation of a cavity in the toilet trap. In this way, the water in the trap can buffer the liquid ejected from the bottom flushing water outlet, preventing the water flow from directly hitting the wall surface, thereby achieving a better noise reduction effect.

[0029] In some embodiments of the present invention, the fourth set time T4 includes the working time t41 of the pump at a stable speed stage and the working time t42 of the pump at a deceleration stage.

[0030] Furthermore, the working time t41 of the pump at the stable speed stage is preferably not greater than 3 seconds, and the working time t42 of the pump at the deceleration stage is preferably not greater than 1 second.

[0031] At the end of the flushing stage, the flow rate is gradually changed by the slow descent of the pump, which can prevent the flushing component from dropping suddenly at a high speed, forming a large pressure difference, and further optimizing the noise reduction effect.

[0032] The present invention also provides an intelligent toilet, which includes a control board, a ceramic toilet bowl, and a flushing assembly. The flushing assembly includes a water storage tank, a pump, and a water distribution switching valve. The water distribution switching valve includes:

[0033] - A housing having a water inlet, a brush ring water outlet, a bottom flushing water outlet, and a diversion chamber;

[0034] - A valve core assembly including a regulating member that is movably attached to the wall of the diversion chamber;

[0035] - A driving device for driving the regulating member to move so as to switch to block the brush ring water outlet or the bottom flushing water outlet;

[0036] The control board is signal - connected to the pump and the water distribution switching valve and is used to execute the flushing method of any one of the above.

[0037] In some embodiments of the present invention, the opening cross - sectional areas of the bottom flushing water outlet and the brush ring water outlet of the water distribution switching valve are the same or different, and different water flow rate distributions are achieved by adjusting the position of the regulating member.

[0038] In some embodiments of the present invention, the pump is a variable - frequency water pump, and its rotational speed is adjusted by the control board through a PWM signal.

[0039] The technical solutions and effects of the present invention will be further described in conjunction with the accompanying drawings in the specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flowchart of the steps of the flushing method of the intelligent toilet of the present invention.

[0041] Figure 2 is a water volume control diagram of an example of the flushing method of the intelligent toilet of the present invention.

[0042] Figure 3 is a schematic structural diagram of the ceramic toilet bowl and the flushing assembly of the intelligent toilet of the present invention.

[0043] Figure 4 An exploded view of the ceramic toilet bowl and the flushing assembly of the intelligent toilet of the present invention.

[0044] Figure 5 is an exploded view of the water distribution switching valve of the intelligent toilet of the present invention.

[0045] Figure 6 is an axial sectional view of an embodiment of the water distribution switching valve of the intelligent toilet of the present invention.

[0046] Figure 7 is an axial sectional view of another embodiment of the water distribution switching valve of the intelligent toilet of the present invention.

[0047] REFERENCE MARKS

[0048] Ceramic toilet 20, bottom flushing port 201, brush ring port 202, flushing assembly 30, water storage tank 301, pump 302, brush ring outlet pipe 303, bottom flushing outlet pipe 304, water distribution switching valve 300, housing 310, water inlet 311, brush ring water outlet 312, bottom flushing water outlet 313, flow splitting chamber 314, spool assembly 320, regulating member 321, driving device 330. Detailed implementation manners

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] As shown in the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. When describing the device, system, equipment, and structure of the present invention, the position of the user sitting on the toilet is used as a reference. The front of the user's vision is the front or the front side, the opposite side is the rear or the rear side, the right side of the user is the right or the right side, the left side of the user is the left or the left side, the side where the ceramic toilet is placed on the ground is the lower or the lower side, and the opposite side is the upper or the upper side. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0051] An intelligent toilet flushing method according to the present invention is as Figures 1 - 2 shown.

[0052] The intelligent toilet according to the present invention is as Figures 3 - 4 shown, which includes a control board (not shown), a ceramic toilet 20 and a flushing assembly 30. The ceramic toilet is provided with a bottom flushing port 201 and a brush ring port 202. The flushing assembly 30 includes a water storage tank 301, a pump 302 and a water distribution switching valve 300, a brush ring outlet pipe 303 communicated with the brush ring port 202, and a bottom flushing outlet pipe 304 communicated with the bottom flushing port 201. The water distribution switching valve 300 is provided with a driving device 330, a brush ring water outlet 312 leading to the brush ring outlet pipe 303, a bottom flushing water outlet 313 leading to the bottom flushing outlet pipe 304, and a spool assembly 320 and its regulating member 321 for selectively blocking the brush ring water outlet and the bottom flushing water outlet. The flushing method includes the following steps:

[0053] S1 The control board issues a brush ring command to drive the water distribution switching valve 300 to open the brush ring water outlet 312 and close the bottom flushing water outlet 313. The pump 302 starts to work and lasts for the first set time T1;

[0054] The S2 control board issues a strong flushing instruction, driving the water distribution switching valve 300 to simultaneously open the bottom flushing water outlet 313 and the brush ring water outlet 312, and allocating the water flow rate of the bottom flushing water outlet 313 to be greater than that of the brush ring water outlet 312. The pump 302 maintains operation for a second set time T2;

[0055] The S3 control board issues a washing and flushing instruction, driving the water distribution switching valve 300 to simultaneously open the bottom flushing water outlet 313 and the brush ring water outlet 312, and allocating the water flow rate of the bottom flushing water outlet 313 to be not greater than that of the brush ring water outlet 312. The pump maintains operation for a third set time T3;

[0056] The S4 control board issues a water replenishing instruction, driving the water distribution switching valve 300 to close the bottom flushing water outlet 313 and maintain the opening state of the brush ring water outlet 312. The pump maintains operation for a fourth set time T4;

[0057] After waiting for the fourth set time T4 in S5, the control board issues a stop flushing instruction to the flushing assembly.

[0058] In the above S1 step: the water distribution switching valve 300 is made to open the brush ring water outlet 312 and close the bottom flushing water outlet 313. The pump 302 starts to operate for a first set time T1. In some embodiments of the present invention, the following steps are further included:

[0059] The working stage of the pump 302 includes a pump speed-up stage and a pump steady-speed stage; the first set time T1 includes the working time t11 of the pump speed-up stage and the working time t12 of the pump steady-speed stage. In some embodiments of the present invention, the first set time T1 is preferably not less than 5 seconds, and the working time t11 of the pump speed-up stage is preferably not more than 1 second. In some embodiments of the present invention, the control board can adjust the pulse width modulation signal by changing the duty cycle of the signal to change the operating speed of the pump 302.

[0060] After the first set time T1, the following strong flushing instruction and subsequent steps are executed.

[0061] The control board issues a strong flushing instruction, driving the water distribution switching valve 300 to simultaneously open the bottom flushing water outlet 313 and the brush ring water outlet 312, and allocating the water flow rate of the bottom flushing water outlet 313 to be greater than that of the brush ring water outlet 312. The pump 302 maintains operation for a second set time T2;

[0062] In the embodiments of the present invention, the water flow rate distribution between the bottom flushing water outlet 313 and the brush ring water outlet 312 is achieved by controlling the position of the regulating member 321 by the driving device 330, and the details are introduced as follows.

[0063] As shown Figure 5 in the water diversion switching valve 300, which includes a housing 310, a valve core assembly 320 and a driving device 330; wherein, the housing 310 has a water inlet 311, a brush ring water outlet 312, a bottom flushing water outlet 313 and a diversion chamber 314. The water inlet 311, the brush ring water outlet 312 and the bottom flushing water outlet 313 are arranged at intervals and communicated with the diversion chamber 314. The water inlet 311 is communicated with a water supply pump 302; the valve core assembly 320 includes a regulating member 321, and the regulating member 321 is movably attached to the wall of the diversion chamber 314; the driving device 330 is used to drive the regulating member 321 to move so that the regulating member 321 can selectively block the brush ring water outlet 312 and the bottom flushing water outlet 313. The driving device 330 is preferably a stepper motor or a servo motor.

[0064] The regulating member 321 provided in the valve core assembly 320 can selectively block the brush ring water outlet 312 and the bottom flushing water outlet 313. In this way, when the flushing assembly 30 flushes, the driving device 30 only needs to control the position of the regulating member 321, thereby controlling the flushing mode of the intelligent toilet to respectively realize brush ring water outlet, bottom flushing water outlet or simultaneous water outlet of the brush ring and the bottom flushing. Further, in the mode of simultaneous water outlet of the brush ring and the bottom flushing, by accurately controlling the position of the regulating member 321 by the driving device 30 to adjust the opening degrees of the brush ring water outlet 312 and the bottom flushing water outlet 313, the control of the water volume of the bottom flushing water outlet and the water volume of the brush ring water outlet can be realized. As Figure 6 shown, the driving device 30 adjusts the range value P1 of the opening degree of the bottom flushing water outlet 313 to 60% by controlling the position of the regulating member 321, that is, opening 60% of the outlet cross-section of the bottom flushing water outlet 313; adjusts the range value P1 of the opening degree of the brush ring water outlet 312 to 40%, that is, opening 40% of the outlet cross-section of the brush ring water outlet 312, then the water volume passing through the bottom flushing water outlet 313 accounts for 60% of the total flushing water volume, and the water volume passing through the brush ring water outlet 312 accounts for 40% of the total flushing water volume. In this embodiment, the opening cross-sectional areas of the bottom flushing water outlet 313 and the brush ring water outlet 312 are the same.

[0065] In some other embodiments of the present invention, when the control board (not shown) issues a strong flushing instruction, the water diversion switching valve 300 opens the range value P1 of the opening degree of the bottom flushing water outlet 313 to 70%-90%, and opens the range value P2 of the opening degree of the brush ring water outlet 312 to 10%-30%; then the water volume passing through the bottom flushing water outlet 313 accounts for 70%-90% of the total flushing water volume, and the water volume passing through the brush ring water outlet 312 accounts for 30%-10% of the total flushing water volume.

[0066] The second set time T2 is preferably not greater than 4 seconds and not less than 1.5 seconds, and can be 1.5 seconds, 2 seconds, 2.5 seconds, 3 seconds, 3.5 seconds, and 4 seconds. The proportional value of the water volume of the bottom flushing water outlet 313 to the total flushing water volume is inversely proportional to the second set time T2. For example, if the proportion of the water volume of the bottom flushing water outlet 313 to the total flushing water volume is ≥ 90%, the second set time T2 is preferably set to 1.5 seconds or 2 seconds; when the proportion of the water volume of the bottom flushing water outlet 313 to the total flushing water volume is ≥ 80% and < 90%, the second set time T2 is preferably set to 2 seconds or 2.5 seconds; when the proportion of the water volume of the bottom flushing water outlet 313 to the total flushing water volume is ≥ 70% and < 80%, the second set time T2 is preferably set to 2.5 seconds - 3 seconds; when the proportion of the water volume of the bottom flushing water outlet 313 to the total flushing water volume is ≥ 60% and < 70%, the second set time T2 is preferably set to 3 seconds - 4 seconds.

[0067] Preferably, the control board (not shown) issues a strong flushing instruction, and the water distribution switching valve 300 controls the position of the regulating member 321 through the driving device 30 to adjust the opening degrees of the brush ring water outlet 312 and the bottom flushing water outlet 313, so that the water volume of the bottom flushing water outlet 313 accounts for 70% of the total flushing water volume, and the water volume passing through the brush ring water outlet 312 accounts for 30% of the total flushing water volume, and the second set time T2 is 2.5 seconds.

[0068] Of course, in other embodiments of the present invention, as Figure 7 shown, the opening cross-sectional areas of the bottom flushing water outlet 313 and the brush ring water outlet 312 of the water distribution switching valve 300 are different. The position of the regulating member 321 is also adjusted by an experimental method to obtain the water discharge flow rate data of the bottom flushing water outlet and the brush ring water outlet at different positions. The software of the control board can implement the proportional distribution of the water discharge flow rates of the bottom flushing water outlet and the brush ring water outlet based on this experimental data.

[0069] In other embodiments of the present invention, the intelligent toilet also is provided with a flow sensor (not shown) downstream of the bottom flushing water outlet 313 and / or at the brush ring water outlet 312 of the water distribution switching valve 300. The control board performs closed-loop control according to the flow rate data fed back by the flow sensor and combines with the total flushing water volume data of the pump water output to dynamically adjust the second set time T2.

[0070] After the second set time T2 has passed, the following flushing instructions and subsequent steps are executed.

[0071] Open the bottom flushing water outlet 313 and the brush ring water outlet 312 of the water distribution switching valve 300, and at the same time, make the flow rate of the bottom flushing water outlet 313 not greater than the flow rate of the brush ring water outlet 312, and the pump maintains operation for a third set time T3;

[0072] In an embodiment, when the flushing instruction is executed, preferably, the opening range value P1 of the bottom flushing water outlet 313 opened by the water distribution switching valve 300 is 50%, and the opening range value P2 of the brush ring water outlet 312 opened is 50%. The flow rate of the bottom flushing water outlet 313 is equal to the flow rate of the brush ring water outlet 312, and the third set time T3 is not less than 3 seconds. The opening cross-sectional areas of the bottom flushing water outlet 313 and the brush ring water outlet 312 in this embodiment are the same. In other embodiments, if the opening cross-sectional areas of the bottom flushing water outlet 313 and the brush ring water outlet 312 are different, the flow rate distribution where the flow rate of the bottom flushing water outlet 313 is not greater than that of the brush ring water outlet 312 can also be achieved by an experimental method and by adjusting the position of the regulating member 321.

[0073] After the third set time T3 has elapsed, the following water replenishing instruction and subsequent steps are executed.

[0074] The control board (not shown) issues a water replenishing instruction to cause the water distribution switching valve 300 to close the bottom flushing water outlet 313 and maintain the brush ring water outlet 312 in an open state, and the pump 302 continues to operate for a fourth set time T4.

[0075] Preferably, the fourth set time T4 is not less than 3 seconds.

[0076] In some embodiments of the present invention, the following steps are further included: the pump 302 continues to start, including a pump steady speed stage and a pump deceleration stage; the fourth set time T4 includes the working time t41 of the pump steady speed stage and the working time t42 of the pump deceleration stage. The working time t41 of the pump steady speed stage is preferably not greater than 3 seconds, and the working time t42 of the pump deceleration stage is preferably not greater than 1 second.

[0077] After the fourth set time T4 has elapsed, the control board issues a stop flushing instruction to the flushing assembly.

[0078] The present invention also provides an intelligent toilet, including a control board (not shown), a ceramic toilet 20, and a flushing assembly 30. The barrel of the ceramic toilet is provided with a bottom flushing port 201 and a brush ring port 202.

[0079] The flushing assembly 30 includes a water storage tank 301, a pump 302, a water distribution switching valve 300, a brush ring water outlet pipe 303 communicating with the brush ring port 202, and a bottom flushing water outlet pipe 304 communicating with the bottom flushing port 201.

[0080] The control board is signal-connected to the pump 302 and the water distribution switching valve 300 of the flushing assembly 30 and can implement each step of the flushing method of the above flushing assembly.

[0081] In other embodiments of the present invention, the intelligent toilet further is provided with a flow sensor (not shown) downstream of the bottom flushing water outlet 313 and / or the brush ring water outlet 312 of the water distribution switching valve 300. The control board performs closed-loop control based on the flow data fed back by the flow sensor and in combination with the total flushing water volume data of the pump water output, and dynamically adjusts the second set time T2.

[0082] Through the technical solution of the present invention, during the entire flushing process, when the control board executes the strong flushing instruction, the water flow rate distributed from the bottom flushing water outlet is greater than that from the brush ring water outlet; when the control board executes the washing and flushing instruction, the water flow rate distributed from the bottom flushing water outlet is not greater than that from the brush ring water outlet. In this way, while the accumulated water in the water seal of the ceramic toilet forms a siphon and is taken away, it can also be replenished in time. There is basically a certain amount of liquid in the water seal of the toilet, avoiding the formation of a cavity in the water seal of the toilet. In this way, the water in the water seal can buffer the liquid ejected from the bottom flushing water outlet, avoiding the water flow from directly hitting the wall surface, thereby achieving the purpose of noise reduction; in addition, according to different flushing stages, the flow rate is gradually changed by the pump rising and falling slowly. When performing the brush ring, it can avoid the sudden ejection of the gas remaining in the flushing component at the beginning, resulting in too large a liquid ejection speed and splashing, and avoid the occurrence of a large negative pressure water hammer after the flushing ends, thereby reducing the probability of abnormal noise.

[0083] The above-described embodiments and design examples only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A flushing method for a smart toilet, the smart toilet comprising a control board, a ceramic toilet bowl and a flushing assembly. The ceramic toilet bowl is provided with a bottom flushing port and a brush ring port. The flushing assembly includes a water storage tank, a pump, a water distribution switching valve, a brush ring outlet pipe communicating with the brush ring port, and a bottom flushing outlet pipe communicating with the bottom flushing port. The water distribution switching valve is provided with a driving device, a brush ring water outlet connected to the brush ring outlet pipe, a bottom flushing water outlet connected to the bottom flushing outlet pipe, and a regulating member for selectively blocking the brush ring water outlet and the bottom flushing water outlet. It is characterized in that, The flushing method includes the following instructions: S1 The control board issues a brush-ring instruction to drive the water diversion switching valve to open the brush-ring water outlet and close the bottom-flushing water outlet, and the pump starts to work for a first set time T1; S2 The control board issues a strong-flushing instruction to drive the water diversion switching valve to open the bottom-flushing water outlet and the brush-ring water outlet, and allocate the water flow rate of the bottom-flushing water outlet to be greater than that of the brush-ring water outlet. The pump maintains operation for a second set time T2; S3 The control board issues a washing-flushing instruction to drive the water diversion switching valve to open the bottom-flushing water outlet and the brush-ring water outlet, and allocate the water flow rate of the bottom-flushing water outlet to be not greater than that of the brush-ring water outlet. The pump maintains operation for a third set time T3; S4 The control board issues a water-supplementing instruction to drive the water diversion switching valve to close the bottom-flushing water outlet and maintain the opening state of the brush-ring water outlet. The pump maintains operation for a fourth set time T4; S5 After passing the fourth set time T4, the control board issues a stop-flushing instruction to the flushing assembly.

2. The flushing method of the intelligent toilet according to claim 1, characterized in that, The first set time T1 includes the working time t11 of the pump speed-up stage and the working time t12 of the pump steady-speed stage. The first set time T1 is not less than 5 seconds, and the working time t11 of the pump speed-up stage is not greater than 1 second.

3. The flushing method of the intelligent toilet according to claim 1, characterized in that In step S2, the water diversion switching valve controls the position of the regulating member through a driving device to adjust the opening degree of the bottom-flushing water outlet and / or the brush-ring water outlet, so as to realize the distribution of the water flow rate of the bottom-flushing water outlet and the water flow rate of the brush-ring water outlet.

4. The flushing method of the intelligent toilet according to claim 3, wherein The distribution ratio of the water flow rate of the bottom-flushing water outlet to the water flow rate of the brush-ring water outlet is: the proportion of the water flow rate of the bottom-flushing water outlet in the total water flow rate is not less than 60%; the proportion of the water flow rate of the brush-ring water outlet in the total water flow rate is not greater than 40%.

5. The flushing method of the intelligent toilet according to claim 3, characterized in that, The second set time T2 is inversely proportional to the proportion of the bottom-flushing water volume in the total flushing water volume, where: - When the proportion of the bottom-flushing water volume is ≧90%, T2 is 1.5 seconds or 2 seconds; - When the proportion of the bottom-flushing water volume is ≧80% and <90%, T2 is 2 seconds or 2.5 seconds; - When the proportion of the bottom-flushing water volume is ≧70% and <80%, T2 is 2.5 seconds to 3 seconds; - When the proportion of the bottom-flushing water volume is ≧60% and <70%, T2 is 3 seconds to 4 seconds.

6. The flushing method of the intelligent toilet according to claim 5, characterized in that The intelligent toilet also is provided with a flow sensor downstream of the bottom-flushing water outlet and / or the brush-ring water outlet of the water diversion switching valve. The control board performs closed-loop control according to the flow data fed back by the flow sensor and combines with the total flushing water volume data pumped by the pump to dynamically adjust the second set time T2.

7. The flushing method of the intelligent toilet according to claim 1, wherein In step S3, the water diversion switching valve controls the position of the regulating member through a driving device to adjust the opening degree of the bottom-flushing water outlet and / or the brush-ring water outlet, so that the bottom-flushing water volume is equal to the brush-ring water volume. The third set time T3 is not less than 3 seconds.

8. The flushing method of the intelligent toilet according to claim 1, characterized in that, The fourth set time T4 includes the working time t41 of the pump steady speed stage and the working time t42 of the pump deceleration stage. The working time t41 of the pump steady speed stage is not greater than 3 seconds, and the working time t42 of the pump deceleration stage is not greater than 1 second.

9. An intelligent toilet, comprising a control board, a ceramic toilet bowl, and a flushing assembly, characterized in that, The flushing assembly includes a water storage tank, a pump, and a water distribution switching valve. The water distribution switching valve includes: - A housing having a water inlet, a brush ring water outlet, a bottom flushing water outlet, and a diversion chamber; - A valve core assembly including a regulating member that is movably attached to the wall of the diversion chamber; - A driving device for driving the regulating member to move to switch to block the brush ring water outlet or the bottom flushing water outlet; The control board is signal-connected to the pump and the water distribution switching valve and is used to execute the flushing method according to any one of claims 1 to 8.

10. The intelligent toilet according to claim 9, wherein The opening cross-sectional areas of the bottom flushing water outlet and the brush ring water outlet of the water distribution switching valve are the same or different, and different water flow rate distributions are achieved by adjusting the position of the regulating member.

11. The intelligent toilet according to claim 9 or 10, characterized in that, The pump is a variable frequency water pump, and its rotation speed is adjusted by the control board through a PWM signal.

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