Toilet flushing assembly and toilet bowl

Abstract

The application discloses a toilet flushing assembly and a toilet bowl. The toilet flushing assembly comprises a flushing water path, an electromagnetic valve, a flow meter, a signal line, a power line and a controller. The flushing water path is used for being connected with a flushing opening of a seat body of the toilet bowl and is capable of supplying water to the flushing opening. The electromagnetic valve is arranged to control the on-off of the flushing water path. The flow meter is used for measuring the flow of water output by the flushing water path. One end of the signal line is connected to the flow meter. One end of the power line is connected to the electromagnetic valve. The other ends of the signal line and the power line are connected to the controller. The toilet flushing assembly is configured to open the electromagnetic valve based on receiving a command of flushing the toilet bowl, receive the flow feedback by the flow meter through the signal line, count the flow to obtain the water output by the flushing water path, and close the electromagnetic valve based on the water output by the flushing water path reaching a preset water amount. The toilet flushing assembly is capable of accurately controlling the flushing water amount and the water seal replenishment water amount.

Description

TECHNICAL FIELD

[0001] The present application relates to sanitary wares, and more particularly to a toilet flushing assembly and a toilet bowl. BACKGROUND

[0002] Currently, only one electromagnetic valve is provided on a ceramic toilet to control the start and stop of flushing, and the water volume of flushing and the water replenishment of the water seal are controlled by controlling the opening time of the electromagnetic valve. However, since the water supply pressure of different user households is inconsistent, using a uniform opening time to control the electromagnetic valve will cause the water volume of the user households with low water supply pressure to be small, the water replenishment of the water seal to be insufficient, the position of the water seal to be too low, and the odor to be easily reversed; and the water volume of the user households with high water supply pressure to be large, causing water waste. SUMMARY

[0003] The problem to be solved by the present application is how to accurately control the water volume of flushing and the water replenishment of the water seal.

[0004] The present application provides a toilet flushing assembly, which comprises:

[0005] a flushing waterway, which is used for being connected with a flushing port of a seat body of a toilet bowl, can supply water to the flushing port, and is provided with an electromagnetic valve for controlling the opening and closing of the flushing waterway;

[0006] a flow meter, which is used for measuring the flow of water output by the flushing waterway;

[0007] a signal line, one end of which is connected to the flow meter;

[0008] a power line, one end of which is connected to the electromagnetic valve; and

[0009] a controller, the other end of the signal line and the power line being connected to the controller, which is configured to:

[0010] open the electromagnetic valve based on receiving a toilet flushing instruction;

[0011] receive the flow feedback by the flow meter through the signal line, and count the flow to obtain the water volume output by the flushing waterway;

[0012] close the electromagnetic valve based on the water volume output by the flushing waterway reaching a preset water volume.

[0013] In an exemplary embodiment, the toilet flushing instruction comprises a first toilet flushing instruction and a second toilet flushing instruction.

[0014] The controller is further configured to:

[0015] open the electromagnetic valve based on receiving the first toilet flushing instruction, and close the electromagnetic valve based on the water volume output by the flushing waterway reaching a first preset water volume;

[0016] open the electromagnetic valve based on receiving a second toilet flushing instruction, and close the electromagnetic valve based on an output water volume of the flushing water path reaching a second preset water volume;

[0017] wherein the first preset water volume is less than the second preset water volume.

[0018] In an illustrative embodiment, the toilet flushing assembly further comprises a feces identification device electrically connected to the controller, configured to identify whether the feces cavity of the seat body of the toilet bowl has feces;

[0019] The controller is configured to:

[0020] identify, before opening the electromagnetic valve, whether the feces cavity has feces by the feces identification device;

[0021] after opening the electromagnetic valve, close the electromagnetic valve based on identifying that the feces cavity has no feces and the output water volume of the flushing water path reaches the first preset water volume;

[0022] after opening the electromagnetic valve, close the electromagnetic valve based on identifying that the feces cavity has feces and the output water volume of the flushing water path reaches the second preset water volume.

[0023] In an illustrative embodiment, the feces identification device identifies whether the feces cavity has feces by detecting a feces characteristic substance, which is a substance contained in feces and not contained in urine.

[0024] In an illustrative embodiment, the toilet flushing assembly further comprises a foam generator electrically connected to the controller, configured to deliver foam to the feces cavity of the seat body of the toilet bowl;

[0025] The controller is further configured to:

[0026] open the electromagnetic valve based on receiving a splash-proof water instruction;

[0027] close the electromagnetic valve based on the output water volume of the flushing water path reaching a third preset water volume, wherein the third preset water volume is a water volume required for a water surface in the feces cavity to just cover a sewage outlet of the seat body of the toilet bowl;

[0028] control the foam generator to deliver foam to the feces cavity to form a foam layer on the water surface.

[0029] In an illustrative embodiment, the foam generator comprises a motor electrically connected to the controller and a gear pump connected to the motor.

[0030] The inlet of the gear pump is configured to suck in a foaming agent and air, and the outlet of the gear pump is communicated with the feces cavity.

[0031] In an exemplary embodiment, an alarm device electrically connected to the controller is further included.

[0032] The controller is further configured to:

[0033] When the electromagnetic valve is opened, if the flow rate of the water outlet based on the flushing waterway is less than a preset flow rate, an alarm information of low water pressure is sent out.

[0034] In an exemplary embodiment, the electromagnetic valve is provided with a first flow channel.

[0035] The flow meter comprises:

[0036] A support assembly is arranged in the first flow channel and connected to the inner wall of the first flow channel.

[0037] A rotor is a magnet and rotationally connected to the support assembly, configured to be driven to rotate by the water flow through the first flow channel.

[0038] A Hall sensor is arranged outside the electromagnetic valve and can sense the magnetic field generated by the rotor.

[0039] The Hall sensor is electrically connected to the controller.

[0040] In an exemplary embodiment, the support assembly comprises a first support part and a second support part, both of which are connected to the inner wall of the first flow channel.

[0041] The first support part and the second support part are spaced apart in the extension direction of the first flow channel, the first support part is provided with a first shaft hole, the second support part is provided with a second shaft hole coaxial with the first shaft hole, and the rotor is provided with a rotating shaft, both ends of the rotating shaft extending into the first shaft hole and the second shaft hole.

[0042] In an exemplary embodiment, the flushing opening of the toilet bowl is a brush circle jet opening or a siphon jet opening, and the flow meter is configured to measure the flow rate of the brush circle jet opening or the siphon jet opening; or,

[0043] The flushing opening of the toilet bowl is provided with a plurality of flushing openings, and each of the plurality of flushing openings is a brush circle jet opening or a siphon jet opening, and the flow meter is configured to measure the flow rate of the brush circle jet opening or the siphon jet opening.

[0044] In an exemplary embodiment, the electromagnetic valve comprises:

[0045] A housing is provided with a communication cavity, a water inlet flow channel, a gas supplement opening, a water outlet flow channel and a pressure relief flow channel, one end of the water inlet flow channel is provided with a water outlet opening connected to the communication cavity, the gas supplement opening is connected to the water inlet flow channel, one end of the water outlet flow channel is provided with a water inlet opening connected to the communication cavity, and both ends of the pressure relief flow channel are respectively connected to the communication cavity and the water outlet flow channel.

[0046] a valve disc arranged in the communication cavity and separating between one end of the pressure relief flow channel communicated with the communication cavity and the water inlet and the water outlet, and provided with a water passing through hole aligned with the water outlet;

[0047] an actuator arranged on the shell and electrically connected to the controller; and

[0048] a piston slidingly connected to the shell;

[0049] The actuator is configured to cut off the pressure relief flow channel so that the valve disc covers the water inlet, and connect the pressure relief flow channel so that the valve disc is separated from the water outlet, and the piston is configured to open the air supplementing opening when the pressure in the water inlet flow channel is negative pressure, and close the air supplementing opening when the pressure in the water inlet flow channel is positive pressure.

[0050] The application also provides a toilet bowl comprising the toilet flushing assembly and a seat body.

[0051] The seat body is provided with a defecation cavity, a flushing opening is arranged on the wall surface of the defecation cavity, and a sewage outlet is arranged on the bottom of the defecation cavity.

[0052] In an illustrative embodiment, the flushing opening of the toilet bowl is provided with at least one, and the flushing opening is a brush circle jet opening or a siphon jet opening.

[0053] The flushing opening of the toilet bowl is provided with a plurality of flushing openings, and the plurality of flushing openings are brush circle jet openings and siphon jet openings respectively.

[0054] In the technical solution of the application, after receiving the flushing command, the controller controls the electromagnetic valve to open so that the flushing water path outputs water to the defecation cavity in the seat body to flush away the excrement in the seat body. During the opening of the electromagnetic valve, the controller also measures the water output by the flushing water path through the flow meter, and when the flow meter detects that the water output by the flushing water path reaches the preset water amount, the controller controls the electromagnetic valve to close. In this way, the single flushing of the toilet bowl can be maintained at the preset water amount, and the precise control of the water amount (flushing amount and water seal supplementing amount) of the toilet bowl can be realized, which is not affected by the water supply pressure.

[0055] Additional features and advantages of the application will be set forth in the description that follows, and in part will be apparent from the description, or can be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the description and the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0056] The accompanying drawings are used to provide further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0057] Figure 1 It is a schematic view of a toilet in an embodiment of the present application;

[0058] Figure 2 It is a schematic view of a toilet in an embodiment of the present application;

[0059] Figure 3 It is a schematic view of a toilet in an embodiment of the present application;

[0060] Figure 4 It is an enlarged schematic view of A in Figure 3

[0061] Figure 5 It is a schematic view of a flushing water path in an embodiment of the present application;

[0062] Figure 6 It is a schematic view of a flushing water path in an embodiment of the present application;

[0063] Figure 7 It is a sectional view of an electromagnetic valve in an embodiment of the present application;

[0064] Figure 8 It is a sectional view of an electromagnetic valve in another perspective in an embodiment of the present application (the arrow is the flow direction of water flow);

[0065] Figure 9 It is a sectional view of an electromagnetic valve in another perspective in an embodiment of the present application (the arrow is the flow direction of air flow);

[0066] Figure 10 It is a sectional view of a flushing water path in an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other at will.

[0068] As shown in Figures 1-3 , Figures 1-3 It is shown that the present embodiment proposes a toilet 10, which comprises a toilet flushing assembly and a seat body 300. The toilet flushing assembly comprises a flushing water path 100, a flow meter 500, a signal line 600, a power supply line 700, a controller 400 and an operation assembly.

[0069] ​As shown in Figure 5 , 6 , the flushing water path 100 comprises an electromagnetic valve 1, a water inlet pipe set 2 and a water outlet pipe set 3. As shown in Figure 7 , 8 , the electromagnetic valve 1 is an electric electromagnetic valve 1. The electromagnetic valve 1 is provided with a water inlet joint 1111 and a water outlet joint 1112. The electromagnetic valve 1 is provided with a first flow channel 10 extending from the water inlet joint 1111 to the water outlet joint 1112. The water inlet joint 1111 is connected to the water inlet pipe set 2, and the water inlet pipe set 2 is used to inject water into the water inlet joint 1111. The water inlet pipe set 2 can be connected to the water pipe of a user. The water outlet joint 1112 is connected to the water outlet pipe set 3, and the water outlet pipe set 3 is used to transport the water discharged from the water outlet joint 1112. When the electromagnetic valve 1 is in an open state, the water inlet pipe set 2 and the water outlet pipe set 3 are connected by the first flow channel 10, and water can flow through the water inlet pipe set 2, the electromagnetic valve 1 and the water outlet pipe set 3 in sequence. When the electromagnetic valve 1 is in a closed state, water cannot flow through the electromagnetic valve 1, and the water inlet pipe set 2 and the water outlet pipe set 3 are cut off.

[0070] As shown in Figure 4 , the flow meter 500 is used to measure the flow of water discharged from the flushing water path 100. The flow meter 500 can be arranged on the electromagnetic valve 1, the water inlet pipe set 2 or the water outlet pipe set 3, and the flow of water discharged from the flushing water path 100 can be obtained by detecting the flow of water flowing through the electromagnetic valve 1, the water inlet pipe set 2 or the water outlet pipe set 3. In the present embodiment, the flow meter 500 can be arranged on the electromagnetic valve 1. The flow meter 500 comprises a rotor 502, a Hall sensor 501 and a support assembly 503. The rotor 502 and the support assembly 503 are both arranged in the first flow channel 10 of the electromagnetic valve 1. The support assembly 503 is connected to the inner wall of the first flow channel 10. The rotor 502 is configured in the shape of an impeller. The rotor 502 is rotationally connected to the support assembly 503. In the present embodiment, the support assembly 503 comprises a first support portion 5031 and a second support portion 5032. The first support portion 5031 and the second support portion 5032 are both connected to the inner wall of the first flow channel 10, and the first support portion 5031 and the second support portion 5032 are spaced apart in the extension direction of the first flow channel 10. The first support portion 5031 is provided with a first shaft hole 5033. The second support portion 5032 is provided with a second shaft hole 5034. The first shaft hole 5033 and the second shaft hole 5034 are coaxially arranged. The first shaft hole 5033 and the second shaft hole 5034 can be coaxially arranged with the first flow channel 10. The rotor 502 is provided with a rotating shaft 5021, and the two ends of the rotating shaft 5021 extend into the first shaft hole 5033 and the second shaft hole 5034, respectively. The rotating shaft 5021 is gap-fitted with the first shaft hole 5033 and the second shaft hole 5034, so that the rotor 502 can rotate around the rotating shaft 5021. The extension direction of the rotating shaft 5021 is preferably parallel to the flow direction of the water flow in the first flow channel 10.

[0071] When solenoid valve 1 is opened, water flowing through the first flow channel 10 drives rotor 502 to rotate. Rotor 502 is a magnet and generates a magnetic field. Rotor 502 can be made of permanent magnet materials, such as AlNiCo permanent magnet alloys, IronChromiumCo permanent magnet alloys, permanent magnet ferrites, rare earth permanent magnet materials, and composite permanent magnet materials. Hall sensor 501 is located outside and fixed to solenoid valve 1. Hall sensor 501 is located on one side of rotor 502 and can detect changes in the magnetic field. Since the magnetic field generated by rotor 502 follows rotor 502 as it rotates, the magnetic field changes periodically with each rotation of rotor 502. Hall sensor 501 can sense this periodic change in the magnetic field and thus measure the number of rotations of rotor 502. That is, if Hall sensor 501 measures that the magnetic field of rotor 502 has changed periodically N times, it can determine that rotor 502 has rotated N times. Therefore, the Hall sensor 501 can measure the number of rotations of the rotor 502 by sensing changes in the magnetic field. The unit amount of water flowing through the first flow channel 10 for each rotation of the rotor 502 can be pre-calibrated. Multiplying the unit amount of water by the number of rotations of the rotor 502 per unit time gives the flow rate through the first flow channel 10, which is the flow rate of the flushing water path 100.

[0072] like Figure 3 As shown, the seat 300 can be made of ceramic. The seat 300 has a toilet chamber 301 and a water seal channel (not shown in the figure). The toilet chamber 301 is used to contain excrement, which includes urine and feces. A flushing port (not shown in the figure) is located at the top of the toilet chamber 301, and a drain port (not shown in the figure) is located at the bottom of the toilet chamber 301. The flushing port is connected to the outlet pipe assembly of the flushing water passage 100. When the solenoid valve 1 is opened, the flushing water passage 100 can supply water to the toilet chamber 301 through the flushing port of the seat 300 to flush away the excrement in the toilet chamber 301 through the drain port. One end of the water seal channel is connected to the drain port, and the other end of the water seal channel is connected to the outside of the seat 300. The middle section of the water seal channel arches upwards, and the height of the middle section of the water seal channel is greater than the height of the drain port. Excrement in the toilet chamber 301 flows from the drain outlet into the water seal channel, and then exits from the seat 300 through the water seal channel. Because the height of the middle section of the water seal channel is greater than the height of the drain outlet, the drain outlet can be filled with water to form a water seal, which prevents odors from entering the toilet chamber 301 from the end of the water seal channel opposite to the drain outlet, thereby preventing odors from entering the room.

[0073] The operating component 301 may be located on the seat 300. The operating component includes multiple buttons and / or knobs. The user issues operating commands to the toilet 10 by pressing a button and / or rotating a knob. In this embodiment, the user can send a flushing command to the toilet 10 via the operating component.

[0074] The controller 400 is a logic control unit of the toilet 10. The two ends of the signal line 600 are connected to the Hall sensor 501 of the flow meter 500 and the controller 400 respectively. The two ends of the power line 700 are connected to the electromagnetic valve 1 and the controller 400 respectively. The controller 400 is electrically connected to the Hall sensor 501 of the flow meter 500, the electromagnetic valve 1 and the operation assembly. The controller 400 can receive the operation instruction issued by the operation assembly to control the operation of the toilet 10. The flow meter 500 can send the flow of the water outlet of the flushing waterway 100 to the controller 400 in real time. The controller 400 can control the opening and closing of the electromagnetic valve 1.

[0075] The controller 400 is configured to:

[0076] open the electromagnetic valve 1 based on receiving the flushing toilet instruction;

[0077] receive the flow of the water outlet of the flushing waterway 100 fed back by the flow meter through the signal line 600, and count the flow to obtain the water output by the flushing waterway;

[0078] close the electromagnetic valve 1 based on the water output by the flushing waterway 100 reaching a preset water amount.

[0079] The preset water amount is the water amount required for flushing a toilet once. The preset water amount can be calibrated in advance.

[0080] When water flushing is not required, the electromagnetic valve 1 remains in a closed state. After the user uses the toilet 10, the user issues a flushing toilet instruction by operating the operation assembly. After receiving the flushing toilet instruction, the controller 400 controls the electromagnetic valve 1 to open to make the flushing waterway 100 output water to the excrement cavity 301 in the seat body 300 to flush away the excrement in the seat body 300. During the opening of the electromagnetic valve 1, the flow meter 500 feeds back the flow of the water outlet of the flushing waterway 100 in real time through the signal line 600. After receiving the flow of the water outlet of the flushing waterway 100 sent by the flow meter, the controller counts the flow to obtain the water output by the flushing waterway. The controller compares the water output by the flushing waterway with the preset water amount in real time. When the water output by the flushing waterway 100 reaches the preset water amount, the controller 400 controls the electromagnetic valve 1 to close. In this way, the single water flushing of the toilet 10 can be maintained at the preset water amount, which can not only realize the accurate control of the water amount of the toilet 10, but also accurately control the water seal position of the toilet. The water seal position is the liquid surface position of the water stored in the excrement cavity 301 of the seat body 300.

[0081] In an illustrative embodiment, the flush toilet instruction includes a first flush toilet instruction and a second flush toilet instruction. The user can send the first flush toilet instruction by operating a first flush toilet button in the operating assembly, and the user can send the second flush toilet instruction by operating a second flush toilet button in the operating assembly. The first flush toilet instruction is pre-corresponded to a first preset water amount, and the second flush toilet instruction is pre-corresponded to a second preset water amount. The first preset water amount is less than the second preset water amount. The first preset water amount is the water amount required to flush the fecal cavity 301 clean when the excrement in the fecal cavity 301 is only urine. The second preset water amount is the water amount required to flush the fecal cavity 301 clean when the excrement in the fecal cavity 301 contains feces.

[0082] The controller 400 is further configured to:

[0083] based on receiving the first flush toilet instruction, open the electromagnetic valve 1, and based on detecting that the water amount output by the flushing waterway 100 reaches the first preset water amount, close the electromagnetic valve 1;

[0084] based on receiving the second flush toilet instruction, open the electromagnetic valve 1, and based on detecting that the water amount output by the flushing waterway 100 reaches the second preset water amount, close the electromagnetic valve 1.

[0085] After the user urinates, the user can send the first flush toilet instruction by pressing the first flush toilet button, and after the controller 400 receives the first flush toilet instruction, the controller 400 controls the electromagnetic valve 1 to open to cause the flushing waterway 100 to output water to the fecal cavity 301 in the seat body 300 to flush the excrement in the seat body 300 away. During the process of opening the electromagnetic valve 1, the controller 400 further measures the flow of the water output by the flushing waterway 100 by the flow meter 500 to obtain the water amount output by the flushing waterway 100, and when the controller 400 detects that the water amount output by the flushing waterway 100 reaches the first preset water amount, the controller 400 controls the electromagnetic valve 1 to close, and the flush amount of the toilet 10 in this time is maintained at the first preset water amount.

[0086] After the user defecates, the user can send the second flush toilet instruction by pressing the second flush toilet button, and after the controller 400 receives the second flush toilet instruction, the controller 400 controls the electromagnetic valve 1 to open to cause the flushing waterway 100 to output water to the fecal cavity 301 in the seat body 300 to flush the excrement in the seat body 300 away. During the process of opening the electromagnetic valve 1, the controller 400 further measures the water amount output by the flushing waterway 100 by the flow meter 500, and when the flow meter 500 detects that the water amount output by the flushing waterway 100 reaches the second preset water amount, the controller 400 controls the electromagnetic valve 1 to close, and the flush amount of the toilet 10 in this time is maintained at the second preset water amount.

[0087] In this way, the user can flush with the first preset water amount after urinating and flush with the second preset water amount after defecating, and the first preset water amount is less than the second preset water amount, which can save water resources.

[0088] In an illustrative embodiment, the toilet 10 further comprises a feces recognition device (not shown in the figure), which can be arranged on the inner wall of the bowl 301. The feces recognition device is electrically connected to the controller 400. The feces recognition device is used to recognize whether there is feces in the bowl 301. The feces recognition device can be used to identify whether there is feces in the bowl 301 by detecting a feces characteristic substance, which is a substance contained in feces and generally not contained in urine. The feces recognition device considers that there is feces in the bowl 301 when it detects the feces characteristic substance, and considers that there is no feces in the bowl 301 when it does not detect the feces characteristic substance. The feces characteristic substance can be hydrogen sulfide, and the feces recognition device can be a hydrogen sulfide sensor.

[0089] The controller 400 is further configured to:

[0090] Before opening the electromagnetic valve 1, control the feces recognition device to recognize whether there is feces in the bowl 301;

[0091] After opening the electromagnetic valve 1, based on recognizing that there is no feces in the bowl 301 and the flow meter 500 detecting that the amount of water output by the flushing waterway 100 reaches the first preset water amount, close the electromagnetic valve 1;

[0092] After opening the electromagnetic valve 1, based on recognizing that there is feces in the bowl 301 and the amount of water output by the flushing waterway 100 reaches the second preset water amount, close the electromagnetic valve 1.

[0093] After the user uses the toilet 10, the user can press the flush button to send a flush command. After the controller 400 receives the flush command, the controller 400 controls the feces recognition device to recognize whether there is feces in the bowl 301. When the recognition result is that there is no feces in the bowl 301, the first preset water amount is set as the current flushing water amount. When the recognition result is that there is feces in the bowl 301, the second preset water amount is set as the current flushing water amount. Then, the controller 400 controls the electromagnetic valve 1 to open to make the flushing waterway 100 output water to the bowl 301 in the seat body 300 to flush away the excrement in the seat body 300. During the opening of the electromagnetic valve 1, the controller 400 further detects the amount of water output by the flushing waterway 100 in real time through the flow meter 500. When the controller 400 detects that the amount of water output by the flushing waterway 100 reaches the set current flushing water amount, the controller 400 controls the electromagnetic valve 1 to close.

[0094] In this way, after the user urinates and flushes the toilet, the feces recognition device recognizes that there is no feces in the toilet bowl 301, and the flushing waterway 100 outputs a first preset amount of water to flush the toilet bowl 301; after the user defecates and flushes the toilet, the feces recognition device recognizes that there is feces in the toilet bowl 301, and the flushing waterway 100 outputs a second preset amount of water to flush the toilet bowl 301. In this way, the toilet bowl 10 can automatically distinguish between urination and defecation, and use the corresponding amount of water for flushing, without the user having to actively select the amount of water for flushing the toilet, providing a better user experience.

[0095] In an illustrative embodiment, in the direction from the top of the toilet bowl 301 to the bottom of the toilet bowl 301, the cross-sectional area of the toilet bowl 301 has a tendency to decrease. The cross-sectional area is the cross-section of the toilet bowl 301 on a horizontal plane. The cross-sectional area of the toilet bowl 301 can gradually decrease in the direction from the top to the bottom.

[0096] The toilet bowl 10 also includes a foam generator. The foam generator is configured to deliver foam into the toilet bowl 301. The foam generator generates foam by mixing a foaming agent with air. The foaming agent can be a surfactant. The foam generator can include a gear pump and a motor connected to the gear pump, the motor being configured to drive the gear pump to rotate. The foaming agent and air are input from an inlet of the gear pump, mixed into foam in the gear pump, and then output from an outlet of the gear pump. The outlet of the gear pump is in communication with the toilet bowl 301. The gear pump delivers the foam to the toilet bowl 301. The motor of the foam generator is electrically connected to the controller 400.

[0097] The controller 400 is further configured to:

[0098] based on receiving the splash-proof water instruction, open the electromagnetic valve 1;

[0099] based on the flow meter 500 detecting that the amount of water output by the flushing waterway 100 reaches a third preset amount of water, close the electromagnetic valve 1; wherein the third preset amount of water is the amount of water required for the water surface in the toilet bowl 301 to just cover the sewage outlet;

[0100] control the foam generator to deliver foam into the toilet bowl 301 to form a foam layer on the water surface.

[0101] Before the user uses the toilet 10, the user can send a splash-proof water instruction by pressing the splash-proof water key of the operation assembly. After the controller 400 receives the splash-proof water instruction, the controller 400 controls the electromagnetic valve 1 to open to make the flushing water path 100 output water to the toilet cavity 301 in the seat body 300. During the opening of the electromagnetic valve 1, the controller 400 also measures the water output by the flushing water path 100 through the flow meter 500. When the flow meter 500 detects that the water output by the flushing water path 100 reaches the third preset water amount, the controller 400 controls the electromagnetic valve 1 to close. At this time, the water surface in the toilet cavity 301 just covers the sewage outlet. Then, the controller 400 sends foam to the toilet cavity 301. Since the density of the foam is less than the density of water, the foam floats on the water surface to form a foam layer on the water surface in the toilet cavity 301.

[0102] In this way, when the user uses the toilet 10 subsequently, since the foam layer is formed on the water surface in the toilet cavity 301, the water in the toilet cavity 301 does not splash, thereby improving the user experience. Since the water surface in the toilet cavity 301 just covers the sewage outlet when the user uses the toilet 10, the foam layer is close to the bottom of the toilet cavity 301, and the cross-sectional area of the bottom of the toilet cavity 301 is small. In this way, the foam layer can be thick, and the effect of preventing splashing of the foam layer can be improved.

[0103] In an illustrative embodiment, the seat body 300 is provided with at least one flushing opening, which is a brushing circle jetting opening or a siphon jetting opening, and the flow meter 500 is configured to measure the flow of the brushing circle jetting opening or the siphon jetting opening. The brushing circle jetting opening is used for brushing circle. The siphon jetting opening is used for generating jetting siphon at a water seal position.

[0104] In an illustrative embodiment, the seat body 300 can also be provided with multiple flushing openings. The multiple flushing openings are brushing circle jetting openings and siphon jetting openings respectively. The flow meter 500 is configured to measure the flow of the brushing circle jetting openings and the siphon jetting openings.

[0105] In an illustrative embodiment, the toilet 10 further comprises a warning device (not shown in the figure). The warning device can be a display device such as a digital display tube or a display screen, or a loudspeaker or a buzzer. The warning device is electrically connected to the controller 400.

[0106] The controller 400 is further configured to:

[0107] When the electromagnetic valve 1 is opened, the flow of water output by the flushing water path 100 is detected through the flow meter 500.

[0108] Based on the flow of water output by the flushing water path 100 being less than a preset flow, a warning information of low water pressure is sent.

[0109] The flow meter 500 can detect the flow rate of the flushing waterway 100 in real time, which is the amount of water output by the flushing waterway 100 per unit time. Since the amount of water flowing through the first flow channel 10 is the same for each rotation of the rotor 502, the rotational speed of the rotor 502 is directly proportional to the flow rate of the flushing waterway 100, and the rotational speed of the rotor 502 can be used to represent the flow rate.

[0110] The preset flow rate is less than or equal to the flow rate of the flushing waterway 100 of the toilet 10 under the rated water pressure.

[0111] When the user flushes the toilet, if the flow meter 500 detects that the flow rate of the flushing waterway 100 is less than the preset flow rate, the warning device sends a warning message to inform the user that the water pressure is insufficient, which can prevent the user from mistakenly thinking that the toilet 10 is malfunctioning, resulting in a small flushing flow, and can provide positive feedback to the user and improve the user experience. The warning message can be sent to the user in the form of sound, image or text.

[0112] The existing toilet produces a loud noise when flushing, which affects the user experience. Since the anti-siphon air inlet on the electromagnetic valve 1 is connected to the pipeline downstream of the electromagnetic valve 1, air will enter the pipeline downstream of the electromagnetic valve 1 after the electromagnetic valve 1 is closed. When the electromagnetic valve 1 is opened again for flushing, the air and water in the pipeline downstream of the electromagnetic valve 1 mix and flow at high speed, producing a loud noise. To solve this problem, the following technical solutions are proposed:

[0113] The electromagnetic valve 1 comprises a housing 11, a valve disc 13, a piston 14 and an actuator 12. The actuator 12 is electrically connected to the controller 400. The housing 11 is provided with a water inlet joint 1111, a water outlet joint 1112 and a gas supplement port 1123. The housing 11 is further provided with a communication cavity 110, a pressure relief flow channel 1121 and the first flow channel 10. The first flow channel 10 comprises a water inlet flow channel 1113 and a water outlet flow channel 1114. The rotor 502 and the support assembly 503 are arranged in the water inlet flow channel 1113, and the Hall sensor 501 is arranged outside the water inlet flow channel 1113. One end of the water inlet flow channel 1113 is provided with a water outlet port 1115 which is communicated with the communication cavity 110. The other end of the water inlet flow channel 1113 extends to the water inlet joint 1111 and is communicated with the water inlet joint 1111. One end of the water outlet flow channel 1114 is provided with a water inlet port 1116 which is communicated with the communication cavity 110. The other end of the water outlet flow channel 1114 extends to the water outlet joint 1112 and is communicated with the water outlet joint 1112. One end of the pressure relief flow channel 1121 is provided with a pressure relief hole 1122 which is communicated with the communication cavity 110. The other end of the pressure relief flow channel 1121 extends to the water outlet flow channel 1114 and is communicated with the water outlet flow channel 1114. The gas supplement port 1123 is arranged on the housing 11, one end of the gas supplement port 1123 is communicated with the water inlet flow channel 1113, and the other end of the gas supplement port 1123 is communicated with the atmosphere outside the housing.

[0114] As shown in Figure 8 、 10 , the water flow input by the water inlet pipe group 2 can flow through the water inlet joint 1111, the water inlet flow channel 1113, the communication cavity 110, the water outlet flow channel 1114, the water outlet joint 1112 and the water outlet pipe group 3 in sequence and be discharged from the water outlet pipe group 3.

[0115] The valve disc 13 is arranged in the communication cavity 110. The pressure relief hole 1122 is arranged on one side of the valve disc 13, and the water inlet port 1116 of the water outlet flow channel 1114 and the water outlet port 1115 of the water inlet flow channel 1113 are arranged on the other side of the valve disc 13. The valve disc 13 is arranged between the pressure relief hole 1122 and the water inlet port 1116 and the water outlet port 1115. The valve disc 13 can move towards the water inlet port 1116 and away from the water inlet port 1116. The valve disc 13 is provided with a water passing through hole 1310. The water passing through hole 1310 vertically penetrates the valve disc 13. The water passing through hole 1310 is arranged in alignment with the water outlet port 1115, and the water passing through hole 1310 can be communicated with the water outlet port 1115 when the valve disc 13 covers the water inlet port 1116.

[0116] The actuator 12 is mounted on the housing 11. The actuator 12 is configured to cut off and connect the pressure relief channel 1121. When the actuator 12 cuts off the pressure relief channel 1121, the water through hole 1310 is connected to the outlet 1115 of the inlet channel 1113 and the valve disc 13 faces the pressure relief hole 1122. The water pressure on the side of the valve disc 13 facing the pressure relief hole 1122 is greater than the water pressure on the side of the valve disc 13 facing the inlet 1116. Driven by the water pressure, the valve disc 13 moves towards the inlet 1116 so that the valve disc 13 covers the inlet 1116, thereby cutting off the inlet channel 1113 from the outlet channel 1114. When the actuator 12 connects the pressure relief channel 1121, the water pressure on the valve disc 13 facing the pressure relief hole 1122 is less than the water pressure on the valve disc 13 facing the inlet 1116. Driven by the water pressure, the valve disc 13 moves away from the inlet 1116 so that the valve disc 13 leaves the inlet 1116, thereby connecting the inlet channel 1113 to the outlet channel 1114.

[0117] like Figure 9 As shown, piston 14 is disposed inside the housing and is slidably connected to the housing. Piston 14 is positioned near air inlet 1123. When the pressure in the water inlet channel 1113 is negative, piston 14 opens air inlet 1123, allowing outside air to enter the water inlet channel 1113. When the pressure in the water inlet channel 1113 is positive, piston 14 closes air inlet 1123, thereby preventing water in the water inlet channel 1113 from flowing out of air inlet 1123 and causing leakage from solenoid valve 1.

[0118] In this way, the actuator 12 can control the pressure difference between the two sides of the valve disc 13 by cutting off and connecting the pressure relief channel 1121, thereby directly cutting off and connecting the inlet channel 1113 and the outlet channel 1114. When the inlet channel 1113 and the outlet channel 1114 are connected, water can flow sequentially through the inlet channel 1113, the connecting cavity 110, the outlet channel 1114, and the outlet pipe assembly 3, filling the outlet channel 1114 and the outlet pipe assembly 3. After the valve disc 13 covers the inlet 1116 of the outlet channel 1114, cutting off the inlet channel 1113 and the outlet channel 1114, the water in the outlet channel 1114 and the outlet pipe assembly 3 no longer flows due to the effect of external atmospheric pressure, and the outlet channel 1114 and the outlet pipe assembly 3 are in a state of being filled with water. When water is used again, after the inlet channel 1113 is connected to the outlet channel 1114, the water filling the outlet channel 1114 and the outlet pipe assembly 3, as well as the water newly injected into the outlet channel 1114 from the inlet channel 1113, can flow out continuously without any air remaining in the outlet channel 1114 and the outlet pipe assembly 3, which would cause bursting noise.

[0119] When the water pressure in the inlet flow channel 1113 is an abnormal negative pressure, for example, a negative pressure in the pipe upstream of the electromagnetic valve 1 can cause the inlet flow channel 1113 to be a negative pressure, or a broken water pipe can cause the inlet flow channel 1113 to be a negative pressure, at this time the piston 14 can open the air supplement port 1123, the air supplement port 1123 fills air into the inlet flow channel 1113, thereby avoiding the sewage in the toilet 10 from being sucked into the inlet flow channel 1113 through the outlet flow channel 1114, causing the waterway to be contaminated. At the same time, since the air supplement port 1123 only communicates the inlet flow channel 1113 upstream of the valve disc, and the valve disc covers the water inlet of the outlet flow channel 1114, the outlet flow channel 1114 and the inlet flow channel 1113 are separated, the air input by the air supplement port 1123 will not enter the outlet flow channel 1114 after the air supplement port 1123 is opened, at this time, the outlet flow channel 1114 and the outlet pipe group still maintain a full water state, and will not produce a burst noise when the electromagnetic valve 1 is opened next time.

[0120] Therefore, the toilet 10 installed with such an electromagnetic valve 1 will not produce noise when flushing, and the user experience is good.

[0121] In an illustrative embodiment, the actuator 12 includes a slider 121 and a driving mechanism 122. The slider 121 is arranged on the side of the pressure relief hole 1122 away from the communication cavity 110, and the end of the pressure relief hole 1122 away from the communication cavity 110 faces the slider 121. When the slider 121 moves to the first position abutting the end of the pressure relief hole 1122 away from the communication cavity 110, the slider 121 blocks the pressure relief hole 1122 to cut off the pressure relief flow channel 1121. When the slider 121 moves to the second position separated from the end of the pressure relief hole 1122 away from the communication cavity 110, the slider 121 moves away from the end of the pressure relief hole 1122 to connect the pressure relief flow channel 1121.

[0122] The driving mechanism 122 can drive the slider 121 to reciprocate between the first position and the second position. The driving mechanism 122 can be a linear motor, a hydraulic cylinder or a pneumatic cylinder.

[0123] In this way, the driving mechanism 122 can control the on-off between the outlet flow channel 1114 and the inlet flow channel 1113 by driving the slider 121 to slide between the first position and the second position, and such an actuator 12 has a simple structure and high reliability.

[0124] In an exemplary embodiment, the driving mechanism 122 comprises a housing 1223, a coil 1222 and a spring 1221. The housing 1223 is provided with an inlet and an outlet. The housing 1223 is connected to the shell 11, and the inlet and the outlet on the housing 1223 face the pressure relief hole 1122. The coil 1222 and the spring 1221 are both arranged in the housing 1223. The slider 121 extends into the pressure relief flow channel 1121 from the inlet and the outlet of the housing 1223. The spring 1221 is arranged on the side of the slider 121 away from the pressure relief hole 1122, and the slider 121 is located between the pressure relief hole 1122 and the spring 1221. The spring 1221 is in a compressed state, and one end of the spring 1221 abuts against the slider 121. The spring 1221 exerts a spring force on the slider 121 towards the pressure relief hole 1122. The slider 121 moves towards the pressure relief hole 1122 under the action of the spring force and blocks the end of the pressure relief hole 1122 away from the communication chamber 110.

[0125] The slider 121 can be a magnet, which can be a soft magnet. The coil 1222 functions as an electromagnet to exert a magnetic force on the slider 121 when energized, which can be a magnetic attraction force. The direction of the magnetic force exerted by the coil 1222 on the slider 121 is opposite to the direction of the spring force exerted by the spring 1221 on the slider 121, and the magnetic force exerted by the coil 1222 on the slider 121 is greater than the spring force exerted by the spring 1221 on the slider 121.

[0126] In this way, when the coil 1222 is de-energized, only the spring force exerted by the spring 1221 on the slider 121 causes the slider 121 to slide to a first position blocking the pressure relief hole 1122; when the coil 1222 is energized, the magnetic force exerted by the coil 1222 on the slider 121 is greater than the spring force exerted by the spring 1221 on the slider 121, causing the slider 121 to slide in a direction away from the pressure relief hole 1122 to a second position separated from the pressure relief hole 1122.

[0127] In an exemplary embodiment, the coil 1222 has a hollow structure, and a flow channel is arranged in the middle. The flow channel of the coil 1222 is coaxially arranged with the pressure relief hole 1122. The spring 1221 is arranged in the flow channel of the coil 1222. The coil 1222 is configured to drive the slider 121 to slide into the flow channel of the coil 1222 when energized.

[0128] In this way, the slider 121 slides into the coil 1222 under the magnetic force when the coil 1222 is energized, and the slider 121 slides out of the coil 1222 under the action of the spring force when the coil 1222 is de-energized, and the flow channel in the coil 1222 functions as a sliding channel. At the same time, the spring 1221 is arranged in the coil 1222, and the structure of the actuator 12 is more compact.

[0129] In one illustrative embodiment, the first cylinder 1125 is disposed in the water inlet channel 1113. The first cylinder 1125 is configured as a cylinder. The first cylinder 1125 separates the water inlet channel 1113 into a downstream section 11132 and an upstream section 11131. The downstream section 11132 is close to the communication cavity 110, and the upstream section 11131 is away from the communication cavity 110. One end of the downstream section 11132 is communicated with the communication cavity 110, and the other end of the downstream section 11132 is communicated with one end of the first cylinder 1125. The other end of the first cylinder 1125 is communicated with the upstream section 11131. The water outlet is disposed at the end of the downstream section 11132 away from the communication cavity 110.

[0130] The shell 11 further comprises a slide 1124. The slide 1124 is disposed on the wall of the downstream section 11132. One end of the slide 1124 is communicated with the downstream section 11132. The slide 1124 can be configured as a cylindrical cavity. The slide 1124 is coaxially disposed with the first cylinder 1125. The slide 1124 is spaced apart from the first cylinder 1125, i.e. there is a spacing between the slide 1124 and the first cylinder 1125. The end of the slide 1124 communicated with the downstream section 11132 is towards the end of the downstream section 11132 communicated with the first cylinder 1125. The air supplement port 1123 is disposed on the wall of the slide 1124, and the air supplement port 1123 is located at the end of the slide 1124 away from the first cylinder 1125.

[0131] The piston 14 comprises a body 141. The body 141 comprises a sealing plate 1411, a second cylinder 1412 and a third cylinder 1413. The sealing plate 1411 is configured as a plate structure, which can be configured as a flat plate. The second cylinder 1412 and the third cylinder 1413 are both configured as a cylindrical shape. The sealing plate 1411 is arranged between the first cylinder 1125 and the chute 1124. The sealing plate 1411 is perpendicular to the axial direction of the first cylinder 1125. The second cylinder 1412 and the third cylinder 1413 are arranged on two plate surfaces of the sealing plate 1411 respectively. The second cylinder 1412 and the third cylinder 1413 are coaxially arranged. The axial lines of the second cylinder 1412 and the third cylinder 1413 are both perpendicular to the sealing plate 1411. The sealing plate 1411 seals one end of the second cylinder 1412 and the third cylinder 1413 close to each other. The second cylinder 1412 extends into the chute 1124 from the sealing plate 1411. The second cylinder 1412 is in clearance fit with the chute 1124. The third cylinder 1413 extends into the first cylinder 1125 from the sealing plate 1411. The third cylinder 1413 is in clearance fit with the first cylinder 1125. The second cylinder 1412 can slide along the chute 1124, and the third cylinder 1413 can slide along the first cylinder 1125. The wall surface of the second cylinder 1412 is further provided with an air inlet through hole 1414. The air inlet through hole 1414 penetrates the second cylinder 1412. The air inlet through hole 1414 can be arranged at one end of the second cylinder 1412 close to the sealing plate 1411. The wall surface of the third cylinder 1413 is further provided with a water inlet through hole 1415. The water inlet through hole 1415 penetrates the wall surface of the third cylinder 1413. The water inlet through hole 1415 can be arranged at one end of the third cylinder 1413 close to the sealing plate 1411.

[0132] Thus, the second cylinder 1412 is connected with the air supplement port 1123 through the slide 1124, and the third cylinder 1413 is connected with the water inlet channel 1113 through the first cylinder 1125. When the water pressure in the water inlet channel 1113 is negative pressure, the water pressure in the third cylinder 1413 is less than the air pressure in the second cylinder 1412, the piston 14 moves towards the first cylinder 1125, so that the air inlet hole 1414 on the second cylinder 1412 moves out of the slide 1124 and is connected with the water inlet channel 1113, the air supplement port 1123 is opened, air enters the slide 1124 from the air supplement port 1123, and then flows through the slide 1124, the air inlet hole 1414 and the water inlet channel 1113, so as to realize the air supply from the air supplement port 1123 to the water inlet channel 1113, prevent the siphon sewage, and at the same time, the water inlet hole 1415 on the third cylinder 1413 moves into the first cylinder 1125, so as to slow down the suction force of the siphon and reduce the air supplement speed. When the water pressure in the water inlet channel 1113 is positive pressure, the water pressure in the third cylinder 1413 is greater than the air pressure in the second cylinder 1412, the piston 14 moves towards the air supplement port 1123, so that the sealing plate 1411 covers one end of the slide 1124 close to the first cylinder 1125, and the air inlet hole 1414 on the second cylinder 1412 moves into the slide, the piston 14 cuts off the channel between the slide and the water inlet channel 1113, the air supplement port 1123 is closed, and the water in the water inlet channel 1113 cannot flow out of the air supplement port 1123. At the same time, the water inlet hole 1415 on the third cylinder 1413 moves out of the first cylinder 1125, the water inlet hole 1415 connects the third cylinder 1413 with the downstream section 11132 of the water inlet channel 1113, and the water flow in the upstream section 11131 of the water inlet channel 1113 can flow into the downstream section 11132 through the first cylinder 1125, the third cylinder 1413 and the water inlet hole 1415 in sequence.

[0133] In an illustrative embodiment, the piston 14 further comprises a first sealing ring 142 and a second sealing ring 143. The first sealing ring 142 and the second sealing ring 143 can be rubber rings. The first sealing ring 142 and the second sealing ring 143 can be circular rings. The first sealing ring 142 is sleeved on the second cylinder 1412 and abuts against the sealing plate 1411. The second sealing ring 143 is sleeved on the second cylinder 1412 and abuts against the sealing plate 1411.

[0134] When the water pressure in the water inlet channel 1113 is positive, the first sealing ring 142 is clamped between one end of the slide 1124 and the sealing plate 1411, which can improve the sealing performance between the sealing plate 1411 and the slide 1124, and further prevent water leakage. When the water pressure in the water inlet channel 1113 is negative, the second sealing ring 143 is clamped between one end of the first cylinder 1125 and the sealing plate 1411, which can improve the sealing performance between the sealing plate 1411 and the first cylinder 1125, and further reduce the suction force of the siphon.

[0135] In an illustrative embodiment, the valve flap 13 comprises an elastic diaphragm 131. The elastic diaphragm 131 can be made of rubber. The edge of the elastic diaphragm 131 is connected to the wall surface of the communication cavity 110. The elastic diaphragm 131 divides the communication cavity 110 into two parts. When the pressure relief channel 1121 is cut off, the elastic diaphragm 131 covers the water inlet 1116 of the water outlet channel 1114 under the action of water pressure, and the elastic diaphragm 131 seals the water inlet 1116. When the pressure relief channel 1121 is connected, the elastic diaphragm 131 separates from the water inlet 1116 under the action of water pressure, and the water inlet 1116 is connected to the water outlet 1115.

[0136] The elastic diaphragm 131 has good sealing performance, and the elastic diaphragm 131 has very good sealing effect on the water inlet 1116.

[0137] In an illustrative embodiment, as shown in Figure 7 , 8 The valve flap 13 further comprises a support 132. The support 132 is a rigid element. The support 132 comprises a support plate. The support plate can be configured as a flat plate. The support plate is attached to the surface of the middle part of the elastic diaphragm 131 away from the water inlet 1116.

[0138] The support plate of the support 132 can fix the shape of the middle part of the elastic diaphragm 131, so that the middle part of the elastic diaphragm 131 remains flat. In this way, after the middle part of the elastic diaphragm 131 covers the water inlet 1116, it can tightly seal the water inlet 1116.

[0139] In an illustrative embodiment, the elastic diaphragm 131 is provided with a plurality of mounting holes 1311. The mounting holes 1311 are through holes. The mounting holes 1311 vertically penetrate the elastic diaphragm 131.

[0140] The support 132 further comprises a plurality of connecting buckles 1322. The number of the connecting buckles 1322 is the same as that of the mounting holes 1311, and the connecting buckles 1322 are arranged in one-to-one correspondence with the mounting holes 1311. Each connecting buckle 1322 is arranged through a corresponding mounting hole 1311. The connecting buckles 1322 can hook the edges of the mounting holes 1311. The plurality of connecting buckles 1322 hook different parts of the elastic diaphragm 131, so that the support plate is fixed on the elastic diaphragm 131. The water passing through hole 1310 sequentially penetrates the support plate 132 and a connecting buckle 1322.

[0141] The connecting buckles 1322 are used to connect the support 132 and the elastic diaphragm 131, and the connection between the support 132 and the elastic diaphragm 131 is very firm and not easy to fall off after a long time of use.

[0142] In an illustrative embodiment, as shown in Figure 7 8 The housing 11 comprises a valve body 111 and a valve cover 112. The valve body 111 is the main structure of the housing 11. The water inlet flow channel 1113 and the water outlet flow channel 1114 are arranged in the valve body 111, and the water inlet connector 1111 and the water outlet connector 1112 are arranged on the valve body 111. The pressure relief flow channel 1121 is arranged in the valve cover 112, and the actuator 12 is fixed on the valve cover 112. The valve cover 112 covers the valve body 111. The valve cover 112 and the valve body 111 can be connected by screws or bolts. The valve cover 112 and the valve body 111 enclose the communication cavity 110. The edges of the elastic diaphragm 131 are clamped between the valve cover 112 and the valve body 111.

[0143] Clamping the edges of the elastic diaphragm 131 between the valve cover 112 and the valve body 111 can firmly fix the elastic diaphragm 131, improve the sealing performance between the elastic diaphragm 131 and the wall of the connecting cavity, and seal the gap between the valve cover 112 and the valve body 111.

[0144] In an illustrative embodiment, the elastic diaphragm 131 is configured as a disc. The communication cavity 110 is configured as a cavity with a circular cross section, and the elastic diaphragm 131 is arranged coaxially with the communication cavity 110. The end of the water outlet flow channel 1114 close to the water inlet 1116 is configured as a cylindrical cavity, and the water inlet 1116 is configured as a circular opening. The water inlet 1116 is arranged coaxially with the elastic diaphragm 131. The end of the water inlet flow channel 1113 close to the water outlet 1115 is configured as an annular flow channel and encloses the water outlet flow channel 1114, and the water outlet 1115 of the water inlet flow channel 1113 is configured as an annular opening, which surrounds the water inlet 1116 of the water outlet flow channel 1114. The water outlet 1115 is flush with the water inlet 1116.

[0145] ​In this way, the water outlet 1115 is configured as an annular opening surrounding the water inlet 1116, and the water pressure applied by the water in the water outlet 1115 to the elastic diaphragm 131 can be evenly distributed to the outer edge of the elastic diaphragm 131, so that the elastic diaphragm 131 is more uniformly stressed.

[0146] In an exemplary embodiment, the water inlet pipe set 2 includes a water inlet pipe 21, a water inlet nut 22, and a water outlet nut 23. The water inlet pipe set 2 can be connected to an angle valve 200 arranged on a water pipe. The interface of the angle valve 200 is connected to one end of the water inlet pipe 21 through the water inlet nut 22. The other end of the water inlet pipe 21 is fixed to the water inlet joint 1111 of the electromagnetic valve 1 through the water outlet nut 23. After the angle valve 200 is opened, tap water can be delivered to the water receiving joint of the electromagnetic valve 1 through the water inlet pipe 21.

[0147] In an exemplary embodiment, the flushing waterway 100 further includes a spray head 4. The water outlet pipe set 3 includes a connecting nut 32, a water outlet pipe 31, and a clamp 33. One end of the water outlet pipe 31 is connected to the water outlet joint 1112 through the connecting nut 32. The other end of the water outlet pipe 31 is connected to the spray head 4 through the clamp 33. After the electromagnetic valve 1 is opened, the water output by the water outlet joint 1112 is delivered to the spray head 4 through the water outlet pipe 31, and is sprayed into the flushing opening above the bowl 301 from the spray head 4.

[0148] In the description of the present application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "periphery", "mouth-shaped structure" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0149] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; the terms "installation", "connection", "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0150] Although the present application has been described with reference to the above embodiments, the contents described are merely employed embodiments for facilitating the understanding of the present application, and are not intended to limit the present application. Any modification and change in the form and details can be made by any person skilled in the art without departing from the spirit and scope of the present application, and the patent protection scope of the present application shall be defined by the appended claims.

Claims

1. A toilet flushing assembly, characterized by, The toilet flushing assembly comprises: a flushing water path for connecting with a flushing opening of a seat body of a toilet bowl and capable of supplying water to the flushing opening, and provided with an electromagnetic valve for controlling the opening and closing of the flushing water path; a flow meter for measuring the flow of water output by the flushing water path; a signal line connected to the flow meter at one end; a power line connected to the electromagnetic valve at one end; and a controller connected to the other end of the signal line and the power line, and configured to: open the electromagnetic valve based on receiving a toilet flushing instruction; receive the flow of water fed back by the flow meter through the signal line, and count the flow meter to obtain the amount of water output by the flushing water path; close the electromagnetic valve based on the amount of water output by the flushing water path reaching a preset water amount; the toilet flushing assembly further comprises a foam generator electrically connected to the controller and used for supplying foam to a cavity of the seat body of the toilet bowl; the controller is further configured to: open the electromagnetic valve based on receiving a splash-proof water instruction; close the electromagnetic valve based on the amount of water output by the flushing water path reaching a third preset water amount, wherein the third preset water amount is the amount of water required for the water surface in the cavity to just reach over a sewage outlet of the seat body of the toilet bowl; and control the foam generator to supply foam to the cavity to form a foam layer on the water surface. The toilet flushing instruction comprises a first toilet flushing instruction and a second toilet flushing instruction; 2. The toilet washing assembly according to claim 1, characterized in that the controller is further configured to: open the electromagnetic valve based on receiving the first toilet flushing instruction, and close the electromagnetic valve based on detecting that the amount of water output by the flushing water path reaches a first preset water amount; open the electromagnetic valve based on receiving the second toilet flushing instruction, and close the electromagnetic valve based on detecting that the amount of water output by the flushing water path reaches a second preset water amount; wherein the first preset water amount is less than the second preset water amount. The toilet flushing assembly further comprises a feces recognition device electrically connected to the controller and used for recognizing whether there is feces in the cavity of the seat body of the toilet bowl; 3. The toilet bowl washing assembly according to claim 1, wherein, the controller is configured to: control the feces recognition device to recognize whether there is feces in the cavity before the electromagnetic valve is opened; close the electromagnetic valve based on recognizing that there is no feces in the cavity and the amount of water output by the flushing water path reaches the first preset water amount after the electromagnetic valve is opened; and close the electromagnetic valve based on recognizing that there is feces in the cavity and the amount of water output by the flushing water path reaches the second preset water amount after the electromagnetic valve is opened. The feces recognition device distinguishes whether there is feces in the cavity by detecting a feces characteristic substance, which is a substance contained in feces and not contained in urine.

4. The toilet washing assembly according to claim 3, characterized in that The foam generator comprises an electric machine electrically connected to the controller and a gear pump connected to the electric machine; 5. The toilet bowl washing assembly according to claim 1, wherein, an inlet of the gear pump is used for sucking in a foaming agent and air, and an outlet of the gear pump is communicated with the cavity. The toilet flushing assembly further comprises a warning device electrically connected to the controller; 6. The toilet bowl washing assembly according to claim 1, wherein, the controller is further configured to: issue a warning information of low water pressure based on the flow of water output by the flushing water path being less than a preset flow when the electromagnetic valve is opened. The electromagnetic valve is provided with a first flow channel; 7. A toilet washing assembly according to any one of claims 1 to 6, characterized in that, the flow meter comprises: a support assembly arranged in the first flow channel and connected to an inner wall of the first flow channel; ​ A rotor, which is rotatably connected to the support assembly, is configured to be driven to rotate by water flowing through the first flow channel; A Hall sensor is arranged outside the electromagnetic valve and can sense the magnetic field generated by the rotor; The Hall sensor is electrically connected to the controller.

8. The toilet bowl washing assembly according to claim 7, wherein, The support assembly includes a first support portion and a second support portion, both of which are connected to the inner wall of the first flow channel; The first support portion and the second support portion are spaced apart in the extension direction of the first flow channel, the first support portion is provided with a first shaft hole, the second support portion is provided with a second shaft hole coaxial with the first shaft hole, and the rotor is provided with a rotating shaft, both ends of the rotating shaft extending into the first shaft hole and the second shaft hole, respectively.

9. The toilet bowl washing assembly according to claim 7, wherein, The flushing port is a brush circle jet port or a siphon jet port, and the flow meter is configured to measure the flow of the brush circle jet port or the siphon jet port; or, The flushing port is provided with a plurality of flushing ports, each of which is a brush circle jet port and a siphon jet port, and the flow meter is configured to measure the flow of the brush circle jet port and the siphon jet port.

10. The toilet washing assembly according to any one of claims 1 to 6, characterized in that, The electromagnetic valve includes: A housing provided with a communication cavity, a water inlet flow channel, a gas supplement port, a water outlet flow channel, and a pressure relief flow channel, one end of the water inlet flow channel is provided with a water outlet connected to the communication cavity, the gas supplement port is connected to the water inlet flow channel, one end of the water outlet flow channel is provided with a water inlet connected to the communication cavity, and both ends of the pressure relief flow channel are connected to the communication cavity and the water outlet flow channel, respectively; A valve disc arranged in the communication cavity and separated between the water inlet, the water outlet, and the end of the pressure relief flow channel connected to the communication cavity, and provided with a water passing through hole aligned with the water outlet; An actuator arranged on the housing and electrically connected to the controller; and A piston slidably connected to the housing; The actuator is configured to cut off the pressure relief flow channel so that the valve disc covers the water inlet, and connect the pressure relief flow channel so that the valve disc is separated from the water outlet, and the piston is configured to open the gas supplement port when the pressure in the water inlet flow channel is negative, and close the gas supplement port when the pressure in the water inlet flow channel is positive.

11. A toilet bowl characterized by comprising: The toilet flushing assembly according to any one of claims 1 to 10 and a seat body; The seat body is provided with a toilet cavity, and the wall surface of the toilet cavity is provided with a flushing port, and the bottom of the toilet cavity is provided with a sewage outlet.

12. The toilet bowl according to claim 11, wherein The flushing port is at least one, which is a brush circle jet port or a siphon jet port; or, The flushing port is provided with a plurality of flushing ports, each of which is a brush circle jet port and a siphon jet port.

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