Gas-assisted flow increasing device, flushing device, closestool and flushing control method of closestool

Abstract

The invention discloses a gas-assisted flow increasing device, a flushing device, a closestool and a flushing control method of the closestool. The gas-assisted flow increasing device comprises a water storage tank and a water conveying channel, and the water storage tank is provided with a water outlet communicated with an inner cavity of the water storage tank; the water outlet end of the water conveying channel is located in the water outlet, the water outlet direction of the water outlet end of the water conveying channel is consistent with the water outlet direction of the water outlet, and a water passing gap communicated with the inner cavity of the water storage tank is formed between the water outlet end of the water conveying channel and the water outlet; when the water outlet or the flow path connected with the water outlet is closed, water flowing into the water conveying channel enters the water storage tank from the water passing gap and compresses air in the water storage tank; when the water outlet or a flow path connected with the water outlet is opened, compressed air in the water storage tank releases pressure, and water in the water storage tank and water flowing into the water conveying channel are drained through the water outlet together. The water storage tank is provided with a pressure relief hole, and the pressure relief hole is connected with a pressure relief mechanism. The water outlet direction of the water storage tank is consistent with the water outlet direction of tap water, and the water outlet flow cannot be offset mutually.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, and in particular to a gas-assisted flow-increasing device, a flushing device, a toilet and a flushing control method thereof. Background Art

[0002] With the increasing popularity of low-profile toilets, the flushing effect of toilets is also facing a greater challenge. Since the water tank is required to be set as low as possible above the upper surface of the toilet seat, the potential energy of the water in the low-position water tank is not enough to effectively flush the toilet. In order to solve this problem, some low-profile toilets are equipped with additional water tanks and water pumps for pressurized flushing to achieve zero-gravity water flushing, but the water channel structure is relatively complex, the cost is high, and the problem of power outages and inability to flush needs to be considered. To this end, the prior art has developed a pressure water storage device, which compresses a spring in a water tank through the pressure of tap water and stores water in the water tank. When the control component opens the water inlet switch of the water tank and the tap water, the water tank and the tap water act on flushing at the same time. However, the flushing water path structure is complex, the control logic is cumbersome, and the cost is high. In addition, the water inlet channel and the water outlet channel of the water tank are shared. At the end of the pressure of the water tank, the water pressure in the water tank is reduced. Under the action of its own water pressure, the tap water will reversely enter the water outlet channel of the water tank, offset the water outlet flow of the water tank, and thus affect the final flushing pressure. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a gas-assisted flow-increasing device, which can not only provide a stable flushing pressure but also avoid the risk of tank explosion through structural improvement.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an air-assisted flow-increasing device, comprising a sealed water storage tank and a water delivery channel, the water storage tank is provided with a drain port connected to its inner cavity; the water outlet end of the water delivery channel is located in the drain port, and the water outlet direction of the water outlet end of the water delivery channel is consistent with the water outlet direction of the drain port, and a water-passing gap connected to the inner cavity of the water storage tank is formed between the water outlet end of the water delivery channel and the drain port; when the drain port or the flow path connected to it is closed, the water flowing into the water delivery channel enters the water storage tank from the water-passing gap and compresses the air in the water storage tank; when the drain port or the flow path connected to it is opened, the compressed air in the water storage tank releases pressure, and the water in the water storage tank and the water flowing into the water delivery channel are drained together through the drain port; the water storage tank is provided with a pressure relief hole, and the pressure relief hole is connected to a pressure relief mechanism, so that the water storage tank is depressurized through the pressure relief mechanism when the internal water pressure is greater than a preset value.

[0005] Furthermore, a piston is provided in the water storage tank, which divides the inner cavity of the water storage tank into a water storage cavity and an air cavity. The pressure relief hole and the drain port are respectively connected to the water storage cavity. When water enters the water storage cavity, the piston is pushed by the water flow to move until the water pressure in the water storage cavity is balanced with the air pressure in the air cavity.

[0006] Furthermore, the water outlet end of the water supply channel enters the drain port from the water storage tank, the water supply channel extends along the arrangement direction of the water storage chamber and the air chamber, and the piston is mounted outside the water supply channel so that the water supply channel provides guidance for the movement of the piston.

[0007] Furthermore, the water outlet of the water conveyance channel enters the drain port from the water storage tank, and the water inlet of the water conveyance channel is located outside the water storage tank.

[0008] Furthermore, a water outlet is provided at the water outlet end of the water conveyance channel, the inner diameter of the water outlet is smaller than the inner diameter of the drain port, and the inner diameter of the water outlet gradually decreases along the water flow direction.

[0009] Furthermore, the water storage tank is provided with a mounting port, the mounting port is arranged opposite to the drain port, and the water delivery channel is sealed and connected to the mounting port.

[0010] Furthermore, the water storage tank includes an upper shell and a bottom shell, the drain port and the pressure relief hole are arranged on the bottom shell, an opening is arranged at the bottom end of the upper shell, and the bottom end of the upper shell and the bottom shell are sealed and connected to enclose an inner cavity of the water storage tank.

[0011] Furthermore, the pressure relief mechanism is a pressure relief valve, and the preset value is ≥0.8MPa.

[0012] The present invention further provides a flushing device, including a first flushing valve and also including the air-assisted flow-increasing device as described in the present invention above, the water inlet end of the first flushing valve is connected to the drain outlet of the water storage tank, and the water outlet end of the first flushing valve is connected to the injection water path or injection nozzle of the toilet.

[0013] Furthermore, it also includes a second flush valve, the water outlet of which is connected to the brush ring water path or brush ring nozzle of the toilet; it also includes a water divider for connecting to a water supply source, the water divider has a first water outlet and a second water outlet, the first water outlet is connected to the water inlet of the second flush valve, and the second water outlet is connected to the water inlet of the water transfer channel.

[0014] Furthermore, the water outlet end of the pressure relief mechanism is connected to the brush ring water channel or the brush ring nozzle of the toilet.

[0015] Furthermore, it also includes a three-way pipe, and the water outlet end of the pressure relief mechanism and the water outlet end of the second flush valve are connected to the brush ring water channel or the brush ring nozzle of the toilet through the three-way pipe.

[0016] Furthermore, a one-way valve is connected between the water distributor and the water delivery channel to limit water flow from the water delivery channel to the water distributor; the first flush valve and the second flush valve are solenoid valves respectively.

[0017] The present invention further provides a toilet, comprising a toilet body, wherein the toilet body is provided with the flushing device as described in the present invention.

[0018] The present invention further provides a flushing control method for a toilet, using the flushing device of the present invention as described above, comprising the following steps:

[0019] The second flush valve is opened for t1 time to wash the toilet bowl surface;

[0020] The first flush valve is opened for time t3, and the water storage tank and the water delivery channel discharge water together through the drain port;

[0021] After the first flush valve is closed, the water storage tank starts to replenish water until the water pressure in the water storage tank is balanced with the air pressure and then stops replenishing water;

[0022] When the water storage tank starts to replenish water or the second flushing valve is opened for a delayed time t4, the toilet water seal is replenished with water.

[0023] Furthermore, the method further comprises the following steps:

[0024] After the second flush valve is opened for t1 time and closed and before the first flush valve is opened, wait for t2 time to allow the brush ring water on the toilet bowl surface to flow to the pit position of the toilet.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Since the water outlet of the water delivery channel is arranged in the drain outlet of the water storage tank, and the water outlet direction of the water delivery channel is consistent with the water outlet direction of the drain outlet, a water gap connecting the inner cavity of the water storage tank is formed between the water delivery channel and the drain outlet; when the drain outlet or the flow path connected to it is closed, the water flowing into the water delivery channel enters the water storage tank from the water gap and compresses the air in the water storage tank; when the drain outlet or the flow path connected to it is opened, the compressed air in the water storage tank releases pressure, and the water in the water storage tank and the water flowing into the water delivery channel are drained through the drain outlet together. Therefore, the water outlet direction of the water storage tank is consistent with the water outlet direction of the tap water, and the water outlet flow rate will not offset each other. In particular, the water outlet of the water delivery pipeline is arranged in the drain outlet of the water storage tank. Since the flow rate of the tap water outlet is higher than the water discharge flow rate of the water storage tank, low pressure will be generated near the high-speed flowing fluid, thereby generating an adsorption effect, which can accelerate the discharge of the water in the water storage tank. Therefore, the present invention can greatly increase the drainage flow and flushing force, thereby improving the flushing effect. In addition, the water storage tank of the present invention is provided with a pressure relief hole, and the pressure relief hole is connected to a pressure relief mechanism, so that the water storage tank is depressurized through the pressure relief mechanism when the water pressure inside the water storage tank is greater than a preset value. Therefore, the present invention can avoid the risk of tank explosion when the water pressure is abnormal, thereby improving the safety of the use of the water storage tank.

[0027] 2. As a preferred embodiment, a piston is provided in the water tank, which divides the inner cavity of the water tank into a water storage cavity and an air cavity. When water enters the water storage cavity, the piston is pushed by the water flow to move until the water pressure in the water storage cavity is balanced with the air pressure in the air cavity. Therefore, the present invention can prevent the air in the water tank from being carried away by the water flow when the water pressure is too high, causing the inner cavity of the water tank to be filled with water and resulting in failure of the water tank.

[0028] 3. The piston is sleeved outside the water delivery channel, so that the water delivery channel provides guidance for the movement of the piston, which can ensure the working stability of the piston and avoid the need to set up an additional guide structure for the piston.

[0029] 4. The water outlet end of the pressure relief mechanism is connected to the brush ring water channel or brush ring nozzle of the toilet, so that the pressure relief water of the pressure relief mechanism can be discharged to the pot surface of the toilet, which can not only prevent the tank from bursting, but also timely discover the abnormal overpressure of the water pressure in the tap water pipeline.

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the gas-assisted flow-increasing device, flushing device, toilet and flushing control method thereof of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The three-dimensional structure diagram of the flushing device of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 2The three-dimensional structure diagram of the flushing device of the present invention is shown in FIG. Figure 2 (local decomposition);

[0033] Figure 3 is a cross-sectional view of the gas-assisted flow-increasing device of the present invention in a water-intake state;

[0034] Figure 4 is a cross-sectional view of the gas-assisted flow-increasing device of the present invention in a water-discharging state;

[0035] Figure 5 is a cross-sectional view of the gas-assisted flow-increasing device of the present invention in a pressure-releasing state;

[0036] Figure 6 It is a principle block diagram of the flushing device of the present invention;

[0037] Figure 7 is an exploded schematic diagram of the toilet of the present invention;

[0038] Figure 8 It is a three-dimensional structural schematic diagram of the toilet of the present invention;

[0039] Fig. 9 is a rear view of the toilet of the present invention;

[0040] In the figure, 1. water storage tank; 11. drain outlet; 12. water flow gap; 13. pressure relief hole; 14. water storage chamber; 15. air chamber; 16. installation port; 17. upper shell; 18. bottom shell; 2. water delivery channel; 21. water outlet; 3. pressure relief valve; 4. piston; 5. first flush valve; 6. jet nozzle; 7. second flush valve; 8. brush ring nozzle; 9. water distributor; 10. main water inlet pipe; 20. first water pipe; 30. second water pipe; 40. three-way pipe; 50. third water inlet pipe; 60. fourth water inlet pipe; 70. toilet body; 80. water supply source. DETAILED DESCRIPTION

[0041] In the present invention, the terms "first", "second", etc. are only used to distinguish similar objects, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In the description, the orientation or position relationship indicated by "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention, rather than indicating or implying that the device referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] See also Figure 1-Figure 5As shown, a gas-assisted flow-increasing device of the present invention comprises a sealed water storage tank 1 and a water delivery channel 2, and the water storage tank 1 is provided with a drain port 11 communicating with its inner cavity. The water outlet end of the water delivery channel 2 is located in the drain port 11 of the water storage tank 1, and the water outlet direction of the water outlet end of the water delivery channel 2 is consistent with the water outlet direction of the drain port 11, and a water-passing gap 12 communicating with the inner cavity of the water storage tank 1 is formed between the water outlet end of the water delivery channel 2 and the drain port 11; when the drain port 11 or the flow path connected thereto is closed, the water flowing into the water delivery channel 2 enters the water storage tank 1 from the water-passing gap 12 and compresses the air in the water storage tank 1; when the drain port 11 or the flow path connected thereto is opened, the compressed air in the water storage tank 1 releases pressure, and the water in the water storage tank 1 and the water flowing into the water delivery channel 2 are drained through the drain port 11 together. The water storage tank 1 is provided with a pressure relief hole 13, and the pressure relief hole 13 is connected to a pressure relief mechanism, so that the water storage tank 1 can relieve pressure through the pressure relief mechanism when the water pressure inside the water storage tank 1 is greater than a preset value.

[0043] The pressure relief mechanism is specifically a pressure relief valve 3, and the above preset value is ≥0.8MPa, specifically 0.8-1.0MPa. In this embodiment, the opening pressure of the pressure relief valve 3 is set to >0.8MPa. The pressure relief valve 3 with different opening pressures can be set according to the different water pressure standards of the use area and the pressure resistance limit of the water storage tank 1 itself, such as the opening pressure >1.0Mpa. Since the water pressure of most households is between 0.15MPa-0.35MPa, the pressure relief opening value of 0.8MPa can take into account the pressure resistance manufacturing cost of the water storage tank 1 and cover the normal water pressure fluctuation range.

[0044] As a preferred embodiment, a piston 4 is provided in the water storage tank 1, and the piston 4 divides the inner cavity of the water storage tank 1 into a water storage cavity 14 and an air cavity 15. The pressure relief hole 13 and the drain port 11 are respectively connected to the water storage cavity 14. When water enters the water storage cavity 14, the piston 4 is pushed by the water flow to move until the water pressure in the water storage cavity 14 is balanced with the air pressure in the air cavity 15. The water storage cavity 14 is specifically located below the air cavity 15, and the piston 4 is a hollow structure, but is not limited thereto.

[0045] According to the ideal gas function formula When the mass and temperature of the gas are constant, the volume of the gas is proportional to the pressure of the gas; the relationship between the two equilibrium parameters of a certain mass of ideal gas is Under the condition that the gas mass and temperature in water tank 1 remain unchanged, if the volume of air is reduced by 1 time, the pressure of air will increase by 1 time;

[0046] The water tank 1 adopts a straight tank design. As the air volume in the water tank 1 is continuously compressed, the air pressure increases. When the air in the water tank 1 is compressed to the same air pressure as the water pressure of the tap water, the water level in the water tank 1 stops rising, and the piston 4 stops rising.

[0047] The water inlet end of the water delivery channel 2 is located outside the water storage tank 1, and the water outlet end of the water delivery channel 2 enters the drain port 11 from the water storage tank 1. The water outlet end of the water delivery channel 2 is provided with a water outlet 21, and the inner diameter of the water outlet 21 is smaller than the inner diameter of the drain port 11, and the inner diameter of the water outlet 21 gradually decreases along the water flow direction. The water delivery channel 2 extends along the arrangement direction of the water storage chamber 14 and the air chamber 15, and the piston 4 is sleeved outside the water delivery channel 2, so that the water delivery channel 2 provides guidance for the movement of the piston 4.

[0048] The water storage tank 1 is provided with a mounting port 16, which is arranged opposite to the drain port 11, and the water delivery channel 2 is sealed and connected to the mounting port 16. Specifically, the mounting port 16 is arranged at the top of the water storage tank 1, the drain port 11 is arranged at the bottom of the water storage tank 1, and the water delivery channel 2 is a hard pipe body, which is threadedly connected to the mounting port 16 of the water storage tank 1, and a sealing gasket is provided between the water storage tank 1. The water storage tank 1 specifically includes an upper shell 17 and a bottom cover 18, the drain port 11 and the pressure relief hole 13 are arranged on the bottom cover 18, the mounting port 16 is arranged at the upper end of the upper shell 17, the bottom end of the upper shell 17 is provided with an opening, and the bottom end of the upper shell 17 is sealed and connected to the bottom cover 18 to enclose the inner cavity of the water storage tank 1.

[0049] The working principle of the gas-assisted flow-increasing device of the present invention is as follows:

[0050] When water is inletted, the drain port 11 of the water storage tank 1 or the flow path connected thereto is in a closed state, and tap water flows in along the water delivery channel 2 and flows into the water storage cavity 14 of the water storage tank 1 from the water passing gap 12. Figure 3 As shown in the figure, the arrow indicates the direction of water flow, which causes the water level in the water storage chamber 14 to gradually rise, and pushes the piston 4 to move upward, so that the volume of the air chamber 15 is reduced, and the air in the air chamber 15 is gradually compressed. When the water pressure in the water storage chamber 14 is balanced with the air pressure in the air chamber 15, the water storage chamber 14 stops taking in water, and the piston 4 stops moving upward.

[0051] When draining, the drain port 11 of the water storage tank 1 or the flow path connected thereto is opened, and the water in the water storage tank 1 and the tap water are discharged from the drain port 11 at the same time, forming a flushing force. Figure 4As shown, the arrows in the figure indicate the drainage direction of the water flow. Since the water outlet end of the water delivery channel 2 is located in the wider drain port 11, an ejector structure is formed, and a Venturi effect is generated near the tap water outlet 21. The flow rate of the tap water outlet is higher than the flow rate of the water outlet of the water storage tank 1. Low pressure will be generated near the high-speed flowing fluid, thereby generating an adsorption effect, which can accelerate the discharge of the stored water in the water storage tank 1. Therefore, the amount of water discharged in a short time by the present invention is greater than the amount of water generated when the tap water and the water storage tank 1 simply form a parallel waterway, thereby greatly increasing the drainage flow rate and improving the flushing effect. In addition, the present invention can stabilize the drainage pressure by increasing the flow and pressure when the tap water pressure is low and the flow rate is small, thereby playing a stabilizing role. In particular, a piston 4 is provided in the water storage tank 1 of the present invention to separate the water storage tank 1 into an air chamber 15 and a water storage chamber 14, which can prevent the air in the water storage tank 1 from being carried away by the water flow when the water pressure is too high, and the air chamber 15 is filled with stored water, resulting in failure of the water storage tank 1.

[0052] Pressure relief: When the internal water pressure of the water tank 1 is greater than the preset value, the pressure relief valve 3 automatically opens, and the water tank 1 is depressurized through the pressure relief valve 3. Figure 5 As shown, the arrow in the figure indicates the direction of the water flow of the pressure relief. Therefore, the present invention can avoid the risk of tank explosion when the water pressure is abnormal, thereby improving the safety of the water storage tank 1.

[0053] Therefore, the water outlet direction of the water tank 1 of the present invention is consistent with the water outlet direction of tap water, and the water output will not offset each other. In particular, the present invention arranges the water outlet end of the water supply pipe in the drain port 11 of the water tank 1, which can produce a Venturi effect, accelerate the discharge of the stored water in the water tank 1, and thus increase the water outlet flow rate of the water tank 1 in a short period of time. Therefore, the present invention can greatly increase the drainage flow rate and flushing force, thereby improving the flushing effect. The gas-assisted flow-increasing device of the present invention also has a pressure relief function, which can avoid the risk of tank explosion when the water pressure is abnormal, thereby improving the safety of use.

[0054] See also Figure 1-Figure 6 As shown, a flushing device of the present invention includes a first flushing valve 5 and also includes the gas-assisted flow-increasing device of the present invention as described above. The water inlet end of the first flushing valve 5 is connected to the drain outlet 11 of the water storage tank 1, and the water outlet end of the first flushing valve 5 is connected to the injection water path or injection nozzle 6 of the toilet.

[0055] In this embodiment, the flushing device of the present invention further includes a second flushing valve 7, the water outlet of which is connected to the brush ring waterway or brush ring nozzle 8 of the toilet. The present invention also includes a water distributor 9 for connecting a water supply source 80, the water distributor 9 having a first water outlet and a second water outlet, the first water outlet connected to the water inlet of the second flushing valve 7, and the second water outlet connected to the water inlet of the water delivery channel 2. The water distributor 9 can be a three-way pipe fitting or a two-position three-way valve with a water outlet switching function, and the water distributor 9 can be independently provided or integrated on the second flushing valve 7. In this embodiment, the water distributor 9 is integrated on the second flushing valve 7, the water inlet of the water distributor 9 is connected to a main water inlet pipe 10, and the second water outlet of the water distributor 9 is connected to the water inlet of the water delivery channel 2 through the first water pipe 20. The water inlet of the first flushing valve 5 is connected to the drain 11 of the water storage tank 1 through the second water pipe 30.

[0056] In this embodiment, the first flush valve 5 and the second flush valve 7 are electromagnetic valves, but are not limited thereto. The end of the jet water channel is a jet nozzle 6, and the end of the brush circle water channel is a brush circle nozzle 8.

[0057] In this embodiment, a one-way valve (not shown in the figure) is connected between the water divider 9 and the water delivery channel 2 to limit the water flow from the water delivery channel 2 to the water divider 9, thereby preventing the water in the water storage tank 1 from flowing back. The water outlet of the pressure relief mechanism (i.e., the pressure relief valve 3) is connected to the brush ring nozzle 8 of the toilet. In this way, when the water storage tank 1 is depressurized, water flows out of the pot surface of the toilet, and the user can promptly discover the overpressure of the waterway at home.

[0058] In this embodiment, the water outlet of the pressure relief valve 3 and the water outlet of the second flush valve 7 are connected to the brush ring water path of the toilet through a three-way pipe 40. Specifically, the three-way pipe 40 has two water inlet ports and one water outlet port. The water outlet port of the three-way pipe 40 is connected to the brush ring water path. One of the water inlet ports of the three-way pipe 40 is connected to the water outlet of the second flush valve 7 through a third water inlet pipe 50, and the other water inlet port of the three-way pipe 40 is connected to the water outlet of the pressure relief valve 3 through a fourth water inlet pipe 60. In other embodiments, the brush ring nozzle 8 is a two-inlet and one-outlet type, so the water outlet of the pressure relief valve 3 and the water outlet of the second flush valve 7 can be connected without using a three-way pipe. Since the pressure relief valve 3 remains closed when the internal pressure of the water storage tank 1 is normal, under normal working conditions, the water output by the second flushing valve 7 will not flow into the water storage tank 1 through the three-way pipe 40 and the pressure relief valve 3; when the pressure relief valve 3 is opened to release pressure, the second flushing valve 7 may be in a closed state or in an open state. Since the pressure relief water flow is small and the pressure is much lower than the tap water pressure acting on the second flushing valve 7, even if the second flushing valve 7 is in an open state, the pressure relief water flow will not flow into the second flushing valve 7. See Figure 1-Figure 9As shown, a toilet of the present invention comprises a toilet body, and the toilet body is provided with a flushing device of the present invention as described above. The toilet of the present invention is specifically a smart toilet, and the flushing device is arranged in a cavity arranged at the rear of the toilet body.

[0059] A flushing control method for a toilet of the present invention comprises the following steps:

[0060] The second flush valve 7 is opened for t1 time (i.e., the second flush valve 7 is opened and closed after the time t1 is counted), and the toilet pot surface is washed;

[0061] After the second flush valve 7 is closed, it waits for t2 time, waiting for the brush ring water flow on the toilet bowl surface to flow to the pit position of the toilet bowl, so that the dirt flushed down on the toilet bowl surface can be taken away by the subsequent jet water flow, and the brush ring water flow is prevented from impacting the jet water flow and reducing the flushing force of the jet water flow;

[0062] After the time t2 is over, the first flush valve 5 is opened for the time t3 (i.e., the first flush valve 5 is opened and closed after the time t3 is counted), and the water storage tank 1 and the water delivery channel 2 discharge water together through the drain port 11 to form a jet water flow, start the jet siphon effect, take away the dirt in the toilet pit, and discharge it through the toilet siphon drain pipe;

[0063] After the first flush valve 5 is closed, the water storage tank 1 starts to replenish water until the water pressure in the water storage tank 1 is balanced with the air pressure and then stops replenishing water;

[0064] When the water storage tank 1 is replenished with water or the second flushing valve is opened with a delay of t4, the toilet water seal is replenished with water. After the toilet is replenished with water, the second flushing valve 7 is closed.

[0065] In this embodiment, t1 is 3-10 seconds, t2 is 0.5-2 seconds, t3 is 4-6 seconds, and t4 is 0.5-2 seconds, but it is not limited thereto.

[0066] The present invention provides an air-assisted flow-increasing device, a flushing device, a toilet and a flushing control method thereof, and the unrelated parts are the same as the prior art or can be implemented by using the prior art.

[0067] The above embodiments are only used to further illustrate a gas-assisted flow-increasing device, a flushing device, a toilet and a flushing control method thereof of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A gas-assisted flow-increasing device, comprising a sealed water storage tank and a water delivery channel, wherein the water storage tank is provided with a drain port connected to its inner cavity; characterized in that: The water outlet end of the water conveying channel is located in the drain port, and the water outlet direction of the water conveying channel is consistent with the water outlet direction of the drain port, and a water gap connected to the inner cavity of the water storage tank is formed between the water outlet end of the water conveying channel and the drain port; when the drain port or the flow path connected to it is closed, the water flowing into the water conveying channel enters the water storage tank from the water gap and compresses the air in the water storage tank; when the drain port or the flow path connected to it is opened, the compressed air in the water storage tank releases pressure, and the water in the water storage tank and the water flowing into the water conveying channel are drained through the drain port together; the water storage tank is provided with a pressure relief hole, and the pressure relief hole is connected to a pressure relief mechanism, so that the water storage tank is depressurized through the pressure relief mechanism when the internal water pressure is greater than a preset value.

2. The gas-assisted flow enhancement device according to claim 1, characterized in that: A piston is provided in the water storage tank, which divides the inner cavity of the water storage tank into a water storage cavity and an air cavity. The pressure relief hole and the drain port are respectively connected to the water storage cavity. When water enters the water storage cavity, the piston is pushed by the water flow to move until the water pressure in the water storage cavity is balanced with the air pressure in the air cavity.

3. The gas-assisted flow enhancement device according to claim 2, characterized in that: The water outlet end of the water delivery channel enters the drain port from the water storage tank, the water delivery channel extends along the arrangement direction of the water storage cavity and the air cavity, and the piston is sleeved outside the water delivery channel so that the water delivery channel provides guidance for the movement of the piston.

4. The gas-assisted flow enhancement device according to claim 1, characterized in that: The water outlet of the water conveying channel enters the drain port from the water storage tank, and the water inlet of the water conveying channel is located outside the water storage tank.

5. The gas-assisted flow enhancement device according to claim 1 or 4, characterized in that: The water outlet end of the water delivery channel is provided with a water outlet, the inner diameter of the water outlet is smaller than the inner diameter of the drain port, and the inner diameter of the water outlet gradually decreases along the water flow direction.

6. The gas-assisted flow enhancement device according to claim 4, characterized in that: The water storage tank is provided with a mounting opening, the mounting opening is arranged opposite to the drain opening, and the water delivery channel is sealed and connected to the mounting opening.

7. The gas-assisted flow enhancement device according to claim 1, characterized in that: The water storage tank comprises an upper shell and a bottom shell, the drain port and the pressure relief hole are arranged on the bottom shell, an opening is arranged at the bottom end of the upper shell, and the bottom end of the upper shell and the bottom shell are sealed and connected to enclose an inner cavity of the water storage tank.

8. The gas-assisted flow enhancement device according to claim 1, characterized in that: The pressure relief mechanism is a pressure relief valve, and the preset value is ≥0.8MPa.

9. A flushing device, comprising a first flushing valve, characterized in that: It also includes an air-assisted flow-increasing device as described in any one of claims 1 to 8, the water inlet end of the first flush valve is connected to the drain outlet of the water storage tank, and the water outlet end of the first flush valve is connected to the jet water path or jet nozzle of the toilet.

10. The flushing device according to claim 9, characterized in that: It also includes a second flush valve, the water outlet of which is connected to the brush ring water path or brush ring nozzle of the toilet; it also includes a water divider for connecting to a water supply source, the water divider has a first water outlet and a second water outlet, the first water outlet is connected to the water inlet of the second flush valve, and the second water outlet is connected to the water inlet of the water transfer channel.

11. The flushing device according to claim 10, characterized in that: The water outlet end of the pressure relief mechanism is connected to the brush ring water channel or the brush ring nozzle of the toilet.

12. The flushing device according to claim 11, characterized in that: It also includes a three-way pipe, and the water outlet end of the pressure relief mechanism and the water outlet end of the second flush valve are connected to the brush ring water channel or the brush ring nozzle of the toilet through the three-way pipe.

13. The flushing device according to claim 10, characterized in that: A one-way valve is connected between the water distributor and the water delivery channel to limit the water flow from the water delivery channel back to the water distributor; the first flush valve and the second flush valve are solenoid valves respectively.

14. A toilet, comprising a toilet body, characterized in that: The toilet body is provided with a flushing device as described in any one of claims 9-13.

15. A flushing control method for a toilet, characterized in that: The flushing device according to any one of claims 10 to 13 comprises the following steps: The second flush valve is opened for t1 time to wash the toilet bowl surface; The first flush valve is opened for time t3, and the water storage tank and the water delivery channel discharge water together through the drain port; After the first flush valve is closed, the water storage tank starts to replenish water until the water pressure in the water storage tank is balanced with the air pressure and then stops replenishing water; When the water storage tank starts to replenish water or the second flushing valve is opened for a delayed time t4, the toilet water seal is replenished with water.

16. The flushing control method of a toilet according to claim 15, characterized in that: The following steps are also included: After the second flush valve is opened for t1 time and closed and before the first flush valve is opened, wait for t2 time to allow the brush ring water on the toilet bowl surface to flow to the pit position of the toilet.

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