Water outlet control device and sanitary ware

Abstract

The application discloses a water outlet control device, which comprises a main body, a pressure relief switch, a piston assembly and a water pressure detection device. The main body comprises a water inlet channel, a water passing opening, a water outlet channel, a water pressure detection channel and a pressure relief channel. The pressure relief channel is communicated with the pressure chamber and the water outlet channel. The pressure relief switch controls the opening and closing of the pressure relief channel. The piston assembly is movably arranged in the main body and forms a pressure chamber with the main body. The piston assembly comprises a plug head for controlling the opening and closing of the water passing opening and a water supplement channel communicated with the pressure chamber and the water inlet channel. The water pressure detection device is communicated with the pressure chamber through the water pressure detection channel. The water pressure detection device can control the opening and closing time length of the pressure relief switch according to the water pressure detection result. The pressure detection device of the application is communicated with the pressure chamber through the pressure detection channel. The volume of the pressure chamber remains dynamic change. The water hammer generated by the water channel can be absorbed by the pressure chamber, and the pressure detection device is not impacted, so that the damage of the pressure detection device is avoided, and the stability and service life of the pressure detection device are ensured.

Description

Technical Field

[0001] This invention relates to the field of sanitary ware, and in particular to a water outlet control device and sanitary ware. Background Technology

[0002] In daily life, some commonly used sanitary ware such as toilets and squat toilets are usually connected to municipal water pipes to achieve the flushing function. Because the water pressure in municipal water pipes cannot remain stable at all times, sanitary ware is prone to over-flushing under high water pressure, resulting in water waste; conversely, under low water pressure, the water flow may be too weak to clean properly. In some existing technologies, a pressure sensor is installed at the inlet end of the water outlet switch (i.e., in the direction of the municipal water pipe), controlling the opening and closing of the water outlet switch based on the water pressure. However, at the moment the water outlet switch opens and closes, water hammer occurs in the water circuit, impacting the pressure sensor and affecting its stability and lifespan. Summary of the Invention

[0003] This invention proposes a water outlet control device and sanitary ware, aiming to solve at least some of the technical problems in the prior art.

[0004] To achieve the above objectives, a first aspect of the present invention provides a water outlet control device, comprising: The main body includes an inlet channel, a water outlet, an outlet channel, a water pressure detection channel, and a pressure relief channel. Water in the inlet channel can enter the outlet channel through the water outlet. A pressure relief switch is installed in the pressure relief channel to control the opening and closing of the pressure relief channel; A piston assembly is movably disposed in the main body and forms a pressure chamber with the inner wall of the main body. When the pressure relief switch opens the pressure relief channel, the pressure relief channel connects the pressure chamber and the water outlet channel. The piston assembly also includes a plug for controlling the opening and closing of the water inlet and a water replenishment channel connecting the pressure chamber and the water inlet channel. The water flow cross-sectional area of ​​the water replenishment channel is smaller than the water flow cross-sectional area of ​​the pressure relief channel. A water pressure detection device is connected to the pressure chamber through the water pressure detection channel. The water pressure detection device can detect the water pressure in the pressure chamber. If the water pressure is not lower than the preset pressure, the opening time of the pressure relief switch is set to a first time. If the water pressure is lower than the preset pressure, the opening time of the pressure relief switch is set to a second time. The first time is less than the second time.

[0005] According to the first aspect of the water outlet control device provided by the present invention, the pressure detection device is connected to the pressure chamber through the pressure detection channel, and the piston assembly can move in the main body, so that the volume of the pressure chamber can be dynamically changed. When the water circuit is closed, the water hammer generated instantaneously by the water circuit can be offset and absorbed by the dynamic volume change of the pressure chamber, and will not cause impact to the pressure detection device, thereby avoiding damage to the components in the pressure detection device and ensuring the stability and service life of the pressure detection device.

[0006] According to some embodiments of the present invention, the water pressure detection device includes a signal trigger and a deformation component that can deform under water pressure. When the water pressure exceeds a preset pressure, the deformation component can trigger the signal trigger to control the opening and closing parameters of the pressure relief switch.

[0007] According to some embodiments of the present invention, the deformation component includes a pressure-bearing membrane and a push rod, the signal trigger is a micro switch, and the push rod is disposed between the pressure-bearing membrane and the micro switch. When the water pressure exceeds a preset pressure, the pressure-bearing membrane deforms and pushes the push rod to trigger the micro switch.

[0008] According to some embodiments of the present invention, the deformation assembly further includes a first elastic element abutting against one end of the push rod opposite to the pressure-bearing membrane.

[0009] According to some embodiments of the present invention, the water pressure detection device includes a housing, a cylinder extending from the interior of the housing along the direction of movement of the push rod, an annular rib extending radially from the end of the cylinder near the pressure-bearing membrane, the annular rib forming a rod hole, the push rod being slidably disposed in the cylinder, and the end of the push rod near the pressure-bearing membrane including at least a limiting portion and a protrusion, the cross-sectional area of ​​the limiting portion being larger than the rod hole, and the cross-sectional area of ​​the protrusion being smaller than the rod hole; When the first elastic element abuts against the push rod, the limiting part abuts against the annular rib, and the protrusion passes through the rod hole to be at least partially exposed outside the cylinder.

[0010] According to some embodiments of the present invention, the piston assembly further includes a filter screen disposed at one end of the water supply channel near the water inlet channel.

[0011] According to some embodiments of the present invention, the water replenishment channel includes a pilot hole and a sliding cavity. One end of the pilot hole is connected to the water inlet channel and the other end is connected to the sliding cavity. The end of the sliding cavity facing away from the pilot hole is connected to the pressure cavity. In the water flow direction, a water-passing groove is provided on the inner peripheral wall of the sliding cavity. The piston assembly further includes a check valve, which is slidably disposed within the sliding cavity, and the outer peripheral wall of the check valve is sealed to the inner peripheral wall of the sliding cavity.

[0012] According to some embodiments of the present invention, in the direction of movement of the piston assembly, a protrusion is further provided in the pressure chamber, the protrusion being provided corresponding to the sliding chamber, and when the piston assembly moves, the protrusion is slidably inserted into the sliding chamber.

[0013] According to some embodiments of the present invention, the piston assembly includes a diaphragm, the diaphragm including a membrane portion and a cylindrical portion, the outer edge of the membrane portion being fixedly disposed within the main body, and the plug head being disposed on the cylindrical portion; The piston assembly further includes a second elastic element disposed in the pressure chamber, one end of the second elastic element abutting against the main body and the other end abutting against the diaphragm to provide the diaphragm with an elastic force that tends towards the water outlet.

[0014] A second aspect of the present invention provides a sanitary ware, including the above-described water outlet control device.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A schematic diagram of the water outlet control device provided in an embodiment of the present invention is shown (closed). Figure 2 A schematic diagram of the water outlet control device provided in an embodiment of the present invention is shown (open). Figure 3 A schematic diagram of the structure of the water pressure detection device provided in an embodiment of the present invention is shown; Figure 4 A schematic diagram of the piston assembly provided in an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of the water replenishment component provided in an embodiment of the present invention is shown; Figure 6 A schematic diagram of the structure of the diaphragm provided in an embodiment of the present invention is shown; Figure label: 1000. Water outlet control device; 100. Main body; 110. Water inlet channel; 120. Water outlet; 130. Water outlet channel; 140. Water pressure detection channel; 150. Pressure relief channel; 160. Pressure chamber; 161. Protruding column; 200. Piston assembly; 210. Diaphragm; 211. Membrane section; 212. Cylinder section; 220. Water supply component; 221. Pilot hole; 222. Sliding cavity; 2221. Water passage groove; 230. Shaping frame; 240. Filter screen; 250. Check valve; 260. Second elastic component; 300. Water pressure detection device; 310. Signal trigger; 320. Deformation component; 321. Pressure-bearing diaphragm; 322. Push rod; 3221. Limiting part; 3222. Protrusion; 323. First elastic element; 330. Housing; 331. Cylinder; 332. Annular rib; 333. Rod hole; 400. Pressure relief switch. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] refer to Figure 1 In some specific embodiments of the present invention, a water outlet control device 1000 is provided, which can control the opening and closing parameters of the water circuit, such as the opening degree and opening and closing time, in the water-using equipment according to the water supply pressure, thereby controlling the water output while ensuring the water use effect.

[0019] In some specific embodiments, the water outlet control device 1000 can be applied to sanitary ware, such as toilets, squat toilets, urinals and other equipment that need to be flushed and rinsed, so as to ensure the flushing effect while controlling the water output and improving water efficiency.

[0020] refer to Figure 1-4 In some specific embodiments of the present invention, the water outlet control device 1000 includes a main body 100, a pressure relief switch 400, a piston assembly 200, and a water pressure detection device 300.

[0021] The main body 100 is provided with an inlet channel 110, a water outlet 120 and an outlet channel 130 connected in sequence. Water flowing from the inlet channel 110 can enter the outlet channel 130 through the water outlet 120 and then flow out for user use. The main body 100 is also provided with a water pressure detection channel 140 and a pressure relief channel 150.

[0022] A pressure relief switch 400 is disposed in the pressure relief channel 150 to control the opening and closing of the pressure relief channel 150. In some embodiments, the pressure relief switch 400 may be an electrically controlled valve switch, such as a ball valve, or other solenoid valves, which are not limited here.

[0023] The piston assembly 200 is movably disposed in the main body 100 and forms a pressure chamber 160 with the inner wall of the main body 100. One end of the pressure relief channel 150 is connected to the pressure chamber 160 and the other end is connected to the water outlet channel 130. Therefore, when the pressure relief switch 400 opens the pressure relief channel 150, the pressure chamber 160 and the water outlet channel 130 are connected, and the water in the pressure chamber 160 can flow from the pressure relief channel 150 to the water outlet channel 130, reducing the water pressure in the pressure chamber 160. Thus, the water outlet control device 1000 is opened by utilizing the pressure difference between the water inlet channel 110 and the pressure chamber 160. The piston assembly 200 also includes a plug and a water supply channel. The plug is used to block or open the water inlet 120 to control the flow between the water inlet channel 110 and the water outlet channel 130. The water supply channel connects the pressure chamber 160 and the water inlet channel 110. Water in the water inlet channel 110 can enter the pressure chamber 160 through the water supply channel, and the cross-sectional area of ​​the water supply channel is smaller than the cross-sectional area of ​​the pressure relief channel 150.

[0024] One end of the water pressure detection channel 140 is connected to the pressure chamber 160, and the other end is connected to the water pressure detection device 300. Thus, the water pressure within the pressure chamber 160 can be transmitted to and detected by the water pressure detection device 300. The water pressure detection device 300 can control the opening and closing parameters of the pressure relief switch 400 based on the water pressure detection results within the pressure chamber 160, such as controlling the opening degree and opening / closing duration of the pressure relief switch 400.

[0025] The following uses the flushing control process of sanitary ware such as toilets and squat toilets as an example to illustrate the working principle and process of this invention: Before proceeding, let me briefly explain the water discharge process of the water discharge control device 1000: the water flow in the water inlet channel 110 can enter the pressure chamber 160 through the water replenishment channel, so that the pressure in the pressure chamber 160 is balanced with the water pressure in the water inlet channel 110, thereby keeping the plug of the piston assembly 200 closed at the water outlet 120. When water needs to be discharged from the device, the pressure relief switch 400 can be controlled to open the pressure relief channel 150. Since the water pressure in the pressure chamber 160 is higher than that in the outlet channel, the water in the pressure chamber 160 flows to the outlet channel 130 through the pressure relief channel 150. Furthermore, since the cross-sectional area of ​​the water supply channel is smaller than that of the pressure relief channel 150, the water discharge speed of the pressure chamber 160 is greater than the water supply speed. Therefore, the water pressure in the pressure chamber 160 decreases. At this time, since the pressure in the inlet channel 110 is greater than the pressure in the pressure chamber 160, the piston assembly 200 will move under the pressure difference, thereby opening the water outlet 120 and connecting the inlet channel 110 and the outlet channel 130 to achieve water discharge. When the water usage is finished, the pressure relief switch 400 is controlled to close the pressure relief channel 150. At this time, the water in the pressure chamber 160 no longer flows out. Only water flows from the water inlet channel 110 through the water replenishment channel into the pressure chamber 160 and gradually increases the pressure in the chamber. Therefore, the piston assembly 200 is gradually pushed until the plug re-seals the water outlet 120. At this time, the water pressure in the pressure chamber 160 and the water pressure in the water inlet channel 110 reach equilibrium, and the water inlet channel 110 and the water outlet channel 130 are closed.

[0026] Therefore, controlling the opening and closing time of the pressure relief channel 150 can control the water discharge time of the water discharge control device 1000.

[0027] It is understandable that the flushing effect of the water flow output from the outlet channel 130 varies under different water pressures. For example, low-pressure water flow has a relatively poor flushing effect, thus requiring a longer flushing time and a larger flushing flow, while high-pressure water flow has a good flushing effect, thus requiring a shorter flushing time and a smaller flow to clean the surface. Therefore, if the flushing time is assumed to be the same for different water pressures, it is easy to waste water resources or have poor flushing effect. Therefore, it is often necessary to control the flushing time to be longer under low water pressure and to control the flushing time to be shorter under high water pressure.

[0028] In this embodiment of the invention, before the water outlet control device 1000 is used, the internal water flow is in a static state. At this time, the piston assembly 200 closes the water inlet 120, the pressure relief switch 400 closes the pressure relief channel 150, and the water inlet channel 110 is connected to the pressure chamber 160 through the water replenishment channel. Water can enter the pressure chamber 160 from the water replenishment channel, so that the pressure of the water inlet channel 110 and the pressure chamber 160 is balanced. At this time, if the water pressure in the water inlet channel 110 is not lower than the preset pressure, it is a high water pressure state. The water pressure detection device 300 sends information indicating high water pressure to the control module such as the control chip (the control module in the electronic control device is a mature existing technology and will not be described in detail, so it is not shown), so that it maintains the "high water pressure" state. At this time, when the user needs to use the flushing function and starts the water outlet control device 1000, the control module outputs a control signal to the pressure relief switch 400, so that the pressure relief switch 400 opens and remains open for a first duration before closing. When the water inlet channel 110 is in a low water pressure state, its control principle is the opposite of that in the high water pressure state. The pressure relief switch 400 is open for the second duration, and the first duration is less than the second duration. This will not be elaborated here.

[0029] Therefore, under high pressure, the piston assembly 200 is only open for a short time. Although the water output time is short, the high pressure of the water flow can still achieve the target flushing effect while saving water. Under low pressure, the opening time is longer, and a larger flow rate can be used to achieve the same target flushing effect.

[0030] In this embodiment of the invention, the pressure detection device is connected to the pressure chamber 160 through the pressure detection channel, and the piston assembly 200 can move in the main body 100, so that the volume of the pressure chamber 160 can remain dynamically changing. When the water circuit is closed, the water hammer generated instantaneously by the water circuit can be offset and absorbed by the dynamic volume change of the pressure chamber 160, which will not cause impact to the pressure detection device, avoid damage to the components in the pressure detection device, and thus ensure the stability and service life of the pressure detection device.

[0031] refer to Figure 3 In some specific embodiments of the present invention, the water pressure detection device 300 includes a signal trigger 310 and a deformation component 320. The deformation component 320 can deform under water pressure, and the greater the water pressure, the greater the degree of deformation of the deformation component 320. When the water pressure exceeds a preset pressure, the deformation component 320 can trigger the signal trigger 310, causing the signal trigger 310 to generate a signal representing high water pressure and send it to the control module. When the user uses the water outlet control device 1000 later, the control module controls the pressure relief switch 400 to open for a short time based on this signal.

[0032] It should be noted that when the water pressure does not exceed the preset pressure, the deformation component 320 does not trigger the signal trigger 310. At this time, the control module defaults to low water pressure. If the user uses the water outlet control device 1000, the control module controls the pressure relief switch 400 to be open for a longer period of time.

[0033] In other specific embodiments of the present invention, the water pressure detection device 300 may also include only the deformation component 320. When the deformation component 320 deforms under water pressure, it directly generates a signal characterizing high pressure and sends it to the control module. For example, the deformation component 320 may be a piezoelectric ceramic, etc. When the deformation component 320 deforms, it directly generates an electrical signal, without the need for an additional signal trigger 310.

[0034] refer to Figure 3 In some specific embodiments of the present invention, the deformation component 320 includes a pressure-bearing membrane 321 and a push rod 322. The signal trigger 310 can be configured as a micro switch, and the push rod 322 is disposed between the pressure-bearing membrane 321 and the micro switch. When the water pressure is higher than the preset water pressure, the pressure-bearing membrane 321 can be deformed, and the push rod 322 can be pushed to trigger the micro switch to generate a signal.

[0035] It is understandable that the push rod 322 can be kept in contact with the pressure-bearing membrane 321 by gravity at all times, so that the push rod 322 can be pushed when the pressure-bearing membrane 321 deforms. Alternatively, the push rod 322 can be connected to the pressure-bearing membrane 321 by adhesive, magnetic attraction, or other means, so that the push rod 322 is also pushed when the pressure-bearing membrane 321 deforms. Alternatively, the push rod 322 and the pressure-bearing membrane 321 can be integrally formed. No specific limitation is made here.

[0036] In some embodiments of the present invention, the deformation component 320 may only be provided with a pressure-bearing membrane 321, and the signal trigger 310 is a position sensor. When the pressure-bearing membrane 321 is deformed by water pressure, the position sensor can detect the position of the highest point of the pressure-bearing membrane 321 in real time. When the preset position is reached, the position sensor generates a signal representing high pressure.

[0037] refer to Figure 3 In some specific embodiments of the present invention, the deformation component 320 further includes a first elastic element 323, such as a spring. One end of the first elastic element 323 abuts against the interior of the water pressure detection device 300, and the other end abuts against the end of the push rod 322 facing away from the pressure-bearing membrane 321, thereby providing the push rod 322 with an elastic force that tends towards the pressure-bearing membrane 321, so that the push rod 322 maintains a distance from the signal trigger 310 without external force, thus avoiding false triggering.

[0038] refer to Figure 3In some specific embodiments of the present invention, the water pressure detection device 300 includes a housing 330, a deformation component 320, and a signal trigger 310, all disposed within the housing 330. Specifically, in the direction of movement of the push rod 322, a hollow cylinder 331 extends from inside the housing 330, and at the end of the cylinder 331 near the pressure-bearing membrane 321, an annular rib 332 extends radially from the cylinder 331, the annular rib 332 forming a rod hole 333. The push rod 322 is slidably disposed within the cylinder 331, and the end of the push rod 322 near the pressure-bearing membrane 321 includes at least a limiting portion 3221 and a protrusion 3222. Furthermore, the cross-sectional area of ​​the limiting portion 3221 is larger than that of the rod hole 333, and the cross-sectional area of ​​the protrusion 3222 is smaller than that of the rod hole 333.

[0039] When the first elastic member 323 abuts against the push rod 322, the limiting part 3221 abuts against the annular rib 332, and the protrusion 3222 passes through the rod hole 333 so that the protrusion 3222 is at least partially exposed outside the cylinder 331. Thus, when the pressure-bearing membrane 321 is subjected to high water pressure, the push rod 322 can be pushed through the protrusion 3222.

[0040] It is understood that, in the embodiments of the present invention, under low water pressure, the push rod 322 may be in contact with the pressure-bearing membrane 321 or may be at a certain distance from the pressure-bearing membrane 321. That is, the push rod 322 will only be in contact with the pressure-bearing membrane 321 and thus push it to move when the pressure-bearing membrane 321 is deformed to a certain extent.

[0041] refer to Figure 4 In some specific embodiments of the present invention, the piston assembly 200 further includes a filter screen 240, which is disposed at one end of the water supply channel near the water inlet channel 110.

[0042] In this embodiment, by setting the filter screen 240, impurities can be isolated, preventing them from entering through the water supply channel and clogging the water supply channel, or from entering the pressure chamber 160 through the water supply channel and then entering the pressure detection device, causing blockage and affecting its normal use.

[0043] It is worth noting that in the prior art, when the pressure sensor is located in the water inlet channel 110, the pressure sensor is often easily affected by impurities. Even if a filter screen 240 is installed at the detection channel of the pressure sensor, the accumulation of impurities on the filter screen 240 requires frequent disassembly and cleaning. For precision instruments such as the pressure sensing components, this can easily damage or affect accuracy. However, in the embodiment of the present invention, when disassembling and cleaning the filter screen 240, only the filter screen 240 on the piston assembly 200 needs to be cleaned, without affecting the pressure sensing device.

[0044] refer to Figure 4-5In some specific embodiments of the present invention, the water supply channel includes a pilot hole 221 and a sliding cavity 222. One end of the pilot hole 221 is connected to the water inlet channel 110, and the other end is connected to the sliding cavity 222. The end of the sliding cavity 222 facing away from the pilot hole 221 is connected to the pressure cavity 160. In the direction of water flow, the inner peripheral wall of the sliding cavity 222 is concave and forms at least one water passage groove 2221.

[0045] The piston assembly 200 also includes a check valve 250. Specifically, the check valve 250 can be configured as a plunger shape, with its outer peripheral wall conforming to the inner axial wall of the sliding cavity 222 to achieve a relative seal. The check valve 250 is disposed in the sliding cavity 222 and can slide relative to the sliding cavity 222.

[0046] Understandably, when the pressures in the inlet channel 110 and the pressure chamber 160 are equal, the check valve 250 cuts off the connection between the pilot hole 221 and the water passage groove. When the pressure in the inlet channel 110 is higher than the pressure in the pressure chamber 160, water can enter through the pilot hole 221 and push the check valve 250 upward. At this time, the outer peripheral wall of the check valve 250 exposes the pilot hole 221 and the water passage groove, connecting the two. The water flow in the inlet channel 110 can then enter the pressure chamber 160 after passing through the pilot hole 221 and the water passage groove. When the water pressure in the inlet channel 110 drops abnormally (e.g., below atmospheric pressure), the pressure chamber 160, due to its internal pressure being higher than the abnormally low pressure in the inlet channel 110, tends to allow water to flow into the inlet channel 110 through the water replenishment channel. This causes the pressure in the pressure chamber 160 to decrease. As can be seen from the characteristics of the pilot valve, the sealing of the outlet by the piston assembly 200 becomes unstable at this time. Meanwhile, the water pressure in the outlet channel 130 is usually equal to atmospheric pressure. As a result, the sewage inside the outlet channel 130 and the connected sanitary fixtures can easily push open the piston assembly 200, causing backflow and affecting the water source.

[0047] In this embodiment of the invention, a check valve 250 is provided in the piston assembly 200. When the pressure in the water inlet channel 110 is lower than the water pressure in the pressure chamber 160, the check valve 250 will move towards the pilot hole 221 under the action of the water pressure in the pressure chamber 160, thereby breaking the connection between the pilot hole 221 and the water passage groove, preventing the water in the pressure chamber 160 from entering the water inlet channel 110 and causing a pressure drop, thus avoiding sewage backflow.

[0048] In some other specific embodiments of the present invention, the end of the sliding cavity 222 near the pilot hole 221 is a bottom wall, and the through hole communicating between the pilot hole 221 and the sliding cavity 222 is provided on the bottom wall. The bottom wall is shaped as a cone or frustum in the direction of approaching the pressure cavity 160. The through hole of the pilot hole 221 is provided at the highest point of the cone or frustum. Thus, when the anti-reverse member 250 blocks the pilot hole 221, the contact area with the bottom wall is minimized.

[0049] Understandably, if the bottom wall is flat and the surface of the check valve 250 opposite to the bottom wall is also flat, the contact area between the check valve 250 and the pilot hole 221 will be larger. This would make it difficult for the check valve 250 and the bottom wall to separate due to adhesion, thus blocking the water supply channel. This embodiment reduces the contact area between the check valve 250 and the bottom wall, avoiding the aforementioned problem.

[0050] refer to Figure 1 In some specific embodiments of the present invention, a protrusion 161 is also provided in the pressure chamber 160. Specifically, it can be a columnar structure extending from the inner wall of the main body 100. The protrusion 161 is disposed in the direction of movement of the piston assembly 200 corresponding to the sliding chamber 222, and its diameter is smaller than the diameter of the sliding chamber 222. When the piston assembly 200 moves, the protrusion 161 can slide through the sliding chamber 222.

[0051] In this embodiment of the invention, the protrusion 161 passes through the sliding cavity 222. On the one hand, it can guide the movement of the piston assembly 200 and prevent the piston from tilting. On the other hand, it can also block the end of the sliding cavity 222 that faces away from the pilot hole 221, so as to prevent the anti-reverse component 250 from being continuously pushed by the water flow entering from the pilot hole 221 to the point that it leaves the sliding cavity 222 and enters the pressure cavity 160, causing the anti-reverse component 250 to fail.

[0052] refer to Figure 4 and Figure 6 In some specific embodiments of the present invention, the piston assembly 200 includes a diaphragm 210, which includes a membrane portion 211 and a cylindrical portion 212. The outer edge (i.e., the skirt) of the membrane portion 211 is fixedly disposed within the main body 100, and a plug is disposed on the cylindrical portion 212. For example, the plug may be a part of the cylindrical portion 212 near the water inlet 120. When the cylindrical portion 212 moves, it drives the plug to block or open the water inlet 120.

[0053] In some embodiments, the diaphragm portion 211 may be made of a deformable material such as silicone, while the cylindrical portion 212 may be made of a harder, less deformable material. Thus, the diaphragm 210 can support the movement of the piston assembly 200, while the cylindrical portion 212 is less deformable and can move and seal the water inlet 120 better.

[0054] In some other embodiments, the diaphragm 210 is made entirely of a deformable material. In this case, the piston assembly 200 also includes a shaping frame 230, which can be made of a hard plastic, metal or other non-deformable material. The shaping frame 230 is disposed on the diaphragm 210 and covers the cylinder 212, thereby preventing the cylinder 212 from deforming due to water pressure or long service time, which would affect the normal use of the diaphragm 210.

[0055] refer to Figure 4-5In some specific embodiments of the present invention, the piston assembly 200 further includes a water supply component 220, a water supply channel is disposed on the water supply component 220, and an installation hole is provided on the cylindrical portion 212. The water supply component 220 passes through the installation hole so that the water supply channel connects the pressure chamber 160 and the water inlet channel 110.

[0056] It is understandable that if the cylinder 212 and the membrane 211 are made of the same material, and the water supply channel is directly located on the cylinder 212, the water supply channel is easily affected by the deformation of the cylinder 212, which can affect the flow of water in and out. In this embodiment, the water supply component 220 can also be made of a material that is not easily deformed, such as hard plastic or metal. Thus, the water supply component 220 and the shaping frame 230 together form a non-deformable accommodating space for the cylinder 212, thereby stabilizing the shape of the cylinder 212 and preventing the water supply channel from deforming and affecting water supply.

[0057] In some other embodiments, the filter screen 240 is disposed on the water supply component 220. Specifically, it is disposed on the side of the water supply component 220 near the water outlet 120.

[0058] refer to Figure 4 In some specific embodiments of the present invention, the piston assembly 200 further includes a second elastic element 260, such as a spring. The second elastic element 260 is disposed in the pressure chamber 160, with one end abutting against the inner wall of the main body 100 and the other end abutting against the diaphragm 210 to provide the diaphragm 210 with an elastic force that tends towards the water outlet 120.

[0059] In this embodiment, the second elastic element 260 can provide elastic force to the diaphragm 210 when the pressure in the water inlet channel 110 and the pressure chamber 160 is low, thereby also subjecting the cylinder 212 to an elastic force that tends to block the water outlet 120, thus preventing the sewage pressure in the water outlet channel 130 from easily opening the plug and causing sewage backflow.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water outlet control device, characterized in that, include: The main body includes an inlet channel, a water outlet, an outlet channel, a water pressure detection channel, and a pressure relief channel. Water in the inlet channel can enter the outlet channel through the water outlet. A pressure relief switch is installed in the pressure relief channel to control the opening and closing of the pressure relief channel; A piston assembly is movably disposed in the main body and forms a pressure chamber with the inner wall of the main body. When the pressure relief switch opens the pressure relief channel, the pressure relief channel connects the pressure chamber and the water outlet channel. The piston assembly also includes a plug for controlling the opening and closing of the water inlet and a water replenishment channel connecting the pressure chamber and the water inlet channel. The water flow cross-sectional area of ​​the water replenishment channel is smaller than the water flow cross-sectional area of ​​the pressure relief channel. A water pressure detection device is connected to the pressure chamber through the water pressure detection channel. The water pressure detection device can detect the water pressure in the pressure chamber. If the water pressure is not lower than the preset pressure, the opening time of the pressure relief switch is set to a first time. If the water pressure is lower than the preset pressure, the opening time of the pressure relief switch is set to a second time. The first time is less than the second time.

2. The water outlet control device according to claim 1, characterized in that, The water pressure detection device includes a signal trigger and a deformation component that can deform under water pressure. When the water pressure exceeds a preset pressure, the deformation component can trigger the signal trigger to control the opening and closing parameters of the pressure relief switch.

3. The water outlet control device according to claim 2, characterized in that, The deformation component includes a pressure-bearing membrane and a push rod. The signal trigger is a micro switch. The push rod is disposed between the pressure-bearing membrane and the micro switch. When the water pressure exceeds the preset pressure, the pressure-bearing membrane deforms and pushes the push rod to trigger the micro switch.

4. The water outlet control device according to claim 3, characterized in that, The deformation component further includes a first elastic element, which abuts against one end of the push rod opposite to the pressure-bearing membrane.

5. The water outlet control device according to claim 4, characterized in that, The water pressure detection device includes a housing, inside which a cylinder extends along the movement direction of the push rod. At the end of the cylinder near the pressure-bearing membrane, an annular rib extends radially from the cylinder, forming a rod hole. The push rod is slidably disposed in the cylinder. The end of the push rod near the pressure-bearing membrane includes at least a limiting part and a protruding part. The cross-sectional area of ​​the limiting part is larger than that of the rod hole, and the cross-sectional area of ​​the protruding part is smaller than that of the rod hole. When the first elastic element abuts against the push rod, the limiting part abuts against the annular rib, and the protrusion passes through the rod hole to be at least partially exposed outside the cylinder.

6. The water outlet control device according to claim 1, characterized in that, The piston assembly also includes a filter screen, which is disposed at one end of the water supply channel near the water inlet channel.

7. The water outlet control device according to claim 1, characterized in that, The water supply channel includes a pilot hole and a sliding cavity. One end of the pilot hole is connected to the water inlet channel, and the other end is connected to the sliding cavity. The end of the sliding cavity facing away from the pilot hole is connected to the pressure cavity. In the direction of water flow, a water-passing groove is provided on the inner peripheral wall of the sliding cavity. The piston assembly further includes a check valve, which is slidably disposed within the sliding cavity, and the outer peripheral wall of the check valve is sealed to the inner peripheral wall of the sliding cavity.

8. The water outlet control device according to claim 7, characterized in that, In the direction of movement of the piston assembly, a protrusion is also provided in the pressure chamber, the protrusion being provided corresponding to the sliding chamber, and the protrusion being slidably inserted into the sliding chamber when the piston assembly moves.

9. The water outlet control device according to claim 1, characterized in that, The piston assembly includes a diaphragm, the diaphragm including a membrane portion and a cylindrical portion, the outer edge of the membrane portion being fixedly disposed within the main body, and the plug being disposed on the cylindrical portion; The piston assembly further includes a second elastic element disposed in the pressure chamber, one end of the second elastic element abutting against the main body and the other end abutting against the diaphragm to provide the diaphragm with an elastic force that tends towards the water outlet.

10. Sanitary ware, characterized in that, include: The water outlet control device as described in any one of claims 1-9.

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