Flush toilet without water tank and flushing water supply assembly thereof
By using a tankless design and directly supplying kinetic water flow from the tap water pipe for swirling flushing, the problem of space occupation and complex structure of washdown toilet tanks is solved, achieving the effect of saving installation space and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- OCEANWELL XIAMEN IND CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-07-21
AI Technical Summary
Existing flush toilets have large water tanks and complex structures, resulting in high installation space requirements and increased maintenance costs. Current improvements have not effectively solved the problem of water tank space occupation.
Adopting a tankless design, it uses tap water pipes to directly provide kinetic energy water flow, which is sprayed through the spray pipes to the flushing pipes to form a rotating flush. The spray pipes and flushing pipes are connected in the air, avoiding the water tank structure and simplifying the anti-backflow mechanism.
It saves installation space and cost, prevents sewage backflow from polluting tap water pipes, has a compact structure, good flushing effect, and simplifies toilet design.
Smart Images
Figure CN224531835U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a flush toilet and its flushing water supply component, and particularly to a flush tankless toilet, its flushing water supply component, and its flushing water supply method. Background Technology
[0002] The working principle of a flush toilet is to use the force of the flushing water to directly expel waste. This involves four steps: water tank filling, flushing operation, generating flushing force, and waste expulsion. Specifically: 1. Water tank filling: The toilet tank is connected to the tap water pipe via an inlet pipe. When the water level in the tank drops to a certain position, the float ball descends, opening the inlet valve and allowing tap water to enter the tank. Water continues to flow until the set water level is reached, at which point the float ball rises and closes the inlet valve, completing the water filling process. 2. Flushing operation: Pressing the flush button or pulling the flush lever releases the water from the tank through the flush valve. The water in the tank flows rapidly into the toilet bowl under gravity. 3. Generating flushing force: After flowing from the tank into the bowl, the water forms a powerful flow that impacts the waste in the bowl with high speed and volume, carrying it up. 4. Waste expulsion: The powerful water flow carries the waste rapidly down the toilet's drain pipe, flushing it into the sewer, thus completing the waste removal process.
[0003] Because of their high position and high potential energy, washdown toilets utilize the kinetic energy of water flowing downwards from the tank to flush away waste. The higher the tank, the better. This can be achieved by connecting a ceramic tank to the upper rear of the toilet, mounting it high on the wall, or embedding it within a cabinet within the wall. Therefore, existing washdown toilets require a significant amount of space for their tanks. Furthermore, to prevent backflow and contamination of the tap water, the tank or its inlet valve needs an anti-backflow mechanism, such as an anti-siphon device, which is structurally complex.
[0004] In summary, existing flush toilets require consideration of tank space layout and backflow prevention, resulting in complex structures and high costs. Furthermore, the subsequent maintenance of the tank will further increase maintenance costs. Although researchers have been continuously improving and optimizing the tank structure, they have basically adopted the design approach of partitioning the tank or integrating it with the anti-backflow mechanism, without fundamentally solving the problem of the flush toilet tank occupying installation space. Utility Model Content
[0005] This utility model provides a flush-down tankless toilet and its flushing water supply assembly, which has a simple and compact structure, saving installation space and cost. The technical solution adopted by this utility model to solve its technical problem is:
[0006] A flush-down tankless toilet includes a ceramic body with a recessed toilet bowl on the front of its upper surface. A swirling flushing channel is arranged around the upper part of the toilet bowl on the ceramic body. The toilet also includes a flushing water supply assembly mounted on the ceramic body. The flushing water supply assembly includes a flushing pipe with its outlet connected to the swirling flushing channel. The flushing water supply assembly also includes a spray pipe connected to a tap water pipe. The spray pipe sprays tap water into the flushing pipe through a non-contact method. The height of the inlet of the flushing pipe is greater than the height of the outlet. Furthermore, the overflow water level at the inlet of the flushing pipe is not lower than the upper surface of the ceramic body or the overflow water level of the toilet bowl. Simultaneously, the outlet of the spray pipe is higher than the overflow water level at the inlet of the flushing pipe.
[0007] In a preferred embodiment: a cavity is recessed at the rear of the upper surface of the ceramic body, and the flushing water supply component is disposed in the cavity.
[0008] In a preferred embodiment: the inlet of the flushing pipe faces horizontally, an overflow outlet is provided on the upper edge of the rear side wall of the toilet bowl, the flushing water supply assembly also includes a water receiving trough, one end of which is located directly below the area between the flushing pipe and the spray pipe, and the other end is mounted on the overflow outlet, the flushing water supply assembly also includes a nozzle provided at the outlet end of the spray pipe, the nozzle has a downwardly extending water-guiding lip on the lower edge of its outlet, the inlet of the flushing pipe is shaped like an inverted teardrop, and a water-blocking lip is provided at the bottom of the inner side.
[0009] In a preferred embodiment: the inlet of the flushing pipe faces vertically upward.
[0010] In a preferred embodiment: the upper part of the water inlet of the flushing pipe is higher than the upper surface of the ceramic body.
[0011] In a preferred embodiment: the flushing pipe is integrally fired with the ceramic body, or the flushing pipe is a plastic pipe connected to the vortex flushing channel, or the flushing pipe is formed by connecting a portion of the ceramic pipe and a portion of the plastic pipe, and the ceramic pipe portion is integrally fired with the ceramic body.
[0012] The flushing water supply assembly of a washdown tankless toilet includes a flushing pipe, the outlet of which is connected to the vortex flushing channel of the ceramic body, and a spray pipe connected to a tap water pipe. The inlet of the flushing pipe receives tap water sprayed from the spray pipe in an air-tight manner. The height of the inlet of the flushing pipe is greater than the height of the outlet. At the same time, the outlet of the spray pipe is higher than the overflow water level of the inlet of the flushing pipe.
[0013] In a preferred embodiment: the inlet of the flushing pipe faces horizontally and includes a water receiving trough, one end of which is located directly below the area between the flushing pipe and the spray pipe, and the other end is mounted on the overflow port; it also includes a nozzle disposed at the outlet end of the spray pipe, the nozzle having a downwardly extending water-guiding lip at the lower edge of the outlet, the inlet of the flushing pipe being shaped like an inverted teardrop, and having a water-blocking lip at the bottom on the inner side.
[0014] In a preferred embodiment: the inlet of the flushing pipe faces vertically upward, the inlet of the flushing pipe is covered with an upper cap, and the upper cap is provided with a clearance hole corresponding to the outlet end of the spray pipe.
[0015] In a preferred embodiment, the system further includes a switching mechanism for controlling the water spray pipe switch. The switching mechanism includes a start switch, a valve, and a timer. The valve is installed on the water spray pipe. After the start switch is pressed, the valve can be opened. At the same time, the timer starts timing. After the set time is reached, the valve automatically closes.
[0016] In a preferred embodiment, the water receiving tank and the flushing pipe are connected together and are an integral injection-molded structure.
[0017] The flushing water supply method of the washdown tankless toilet involves water flowing from the flushing pipe into the vortex flushing channel, and then exiting from the vortex flushing channel to swirl and flush the waste in the toilet bowl. The height of the inlet of the flushing pipe is greater than the height of the vortex flushing channel, and the overflow water level of the inlet of the flushing pipe is not lower than the upper surface of the ceramic body or the overflow water level of the toilet bowl. The spray pipe is connected to the tap water pipe, and the outlet of the spray pipe is higher than the overflow water level of the inlet of the flushing pipe. After the valve on the spray pipe is opened, the spray pipe sprays tap water in the air towards the inlet of the flushing pipe. In addition, a timer counts the opening time of the valve, and the valve automatically closes after the set time is reached.
[0018] In a preferred embodiment: a nozzle for increasing the water flow rate is installed at the outlet end of the water spray pipe.
[0019] In a preferred embodiment, a water pump is installed in the water spray pipe to increase the range and intensity of the water jet.
[0020] Compared with the prior art, this technical solution has the following advantages:
[0021] 1. The biggest difference between this utility model's flush-down tankless toilet and traditional flush-down toilets is that it does not have a water tank. The dynamic water with kinetic energy output from the tap water pipe does not need to be converted into potential energy and stored in a water tank. Instead, after the tap water pipe is turned on, tap water is sprayed through a spray pipe connected to the tap water pipe, directly using dynamic tap water to rotate and flush away waste in the toilet bowl. Therefore, using tap water with greater kinetic energy to replace the potential energy of a traditional water tank to achieve the flushing purpose eliminates the need for a water tank, resulting in a compact structure and effectively reducing costs. Meanwhile, the water outlet of the spray pipe sprays tap water directly into the inlet of the flush pipe from an air gap. The air gap between the water outlet of the spray pipe and the flush pipe ensures that the water in the flush pipe cannot flow back into the spray pipe, thus preventing contamination of the tap water pipe. Even if the toilet is clogged, the sewage in the bowl can only overflow from the top surface of the ceramic body or the overflow level of the bowl to the ground. This has the advantage of preventing sewage backflow and contamination of the tap water pipe, saving the need for traditional anti-backflow mechanisms, further simplifying the toilet structure and saving toilet costs.
[0022] 2. The flushing water supply components are located inside the toilet bowl, making the toilet structure more compact.
[0023] 3. A water collection trough is installed directly below the area between the flush pipe and the spray pipe to collect water droplets during the spraying process. Especially at the moment the spraying ends, residual water around the nozzle can be guided into the water collection trough from the water inlet lip and then into the toilet bowl.
[0024] 4. The inlet of the flushing pipe is shaped like an inverted teardrop, which can effectively prevent water in the flushing pipe from flowing back and overflowing if the spray flow is too large. A water-blocking lip is set at the bottom of the flushing pipe on the inner side of the inlet to further prevent backflow and overflow, and at the same time raise the overflow water level of the flushing pipe inlet. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] Figure 1 A three-dimensional schematic diagram of the flush-down tankless toilet of this utility model is shown.
[0027] Figure 2 It is illustrated Figure 1 The diagram shows a top view of a flush-down, tankless toilet.
[0028] Figure 3 It is illustrated Figure 1 The diagram shows a cross-sectional view of a flush-down, tankless toilet.
[0029] Figure 4 It is illustrated Figure 1 The diagram shown is an exploded 3D view of a flush-down, tankless toilet.
[0030] Figure 5 It is illustrated Figure 1 The diagram shows a three-dimensional representation of the flush pipes and water inlet of a washdown, tankless toilet.
[0031] Figure 6 It is illustrated Figure 5 The diagram shows a partial cross-section of the flushing pipe and water receiving tank.
[0032] Figure 7 It is illustrated Figure 1 A three-dimensional schematic diagram of the nozzle of a flush-down tankless toilet.
[0033] Figure 8 It is illustrated Figure 7 A cross-sectional schematic diagram of the nozzle is shown.
[0034] Figure 9 A perspective view of the second embodiment of the flush-down tankless toilet of this utility model is shown.
[0035] Figure 10 It is illustrated Figure 9 The diagram shown is an exploded 3D view of a flush-down, tankless toilet. Detailed Implementation
[0036] Example 1
[0037] Please refer to Figures 1 to 8A flush-down, tankless toilet includes a ceramic body 10, with a recessed toilet bowl 12 on the front of the upper surface of the ceramic body. A swirling flushing channel 14 is arranged around the upper part of the toilet bowl on the ceramic body. It also includes a flushing water supply assembly 20 mounted on the ceramic body. The flushing water supply assembly includes a flushing pipe 21, the outlet of which is connected to the swirling flushing channel 14. Thus, flushing water enters the swirling flushing channel 14 through the flushing pipe 21 and then flows out in a swirling motion to flush the toilet bowl 12. This part is similar to existing structures. The difference between this invention and existing flush-down toilets is that this invention does not use a water tank to directly supply water to the flushing pipe 21; that is, it does not use static water with high potential energy from the water tank to supply water to the flushing pipe 21. This invention directly omits the water tank of the flush toilet. Specifically, the flushing water supply assembly 20 also includes a spray pipe 22, which is connected to the tap water pipe. The spray pipe 22 sprays tap water into the flushing pipe 21 through an air-to-air method. That is, after the tap water from the tap water pipe is sprayed out of the outlet of the spray pipe 22, the water flow will travel a distance in the air due to inertia before entering the inlet of the flushing pipe 21. "Air-to-air" means that there is no contact between the inlet of the flushing pipe 21 and the outlet of the spray pipe 22. Therefore, the dynamic tap water with high kinetic energy transported by the tap water pipe does not need to be stored in a water tank beforehand, but is directly used to supply water to the flushing pipe 21. Furthermore, there is no pipe connection between the outlet of the spray pipe 22 and the inlet of the flushing pipe 21; they are separate. In addition, the height of the inlet of the flushing pipe 21 is greater than the height of the outlet, and the overflow water level of the inlet of the flushing pipe 21 (i.e., the plane that overflows after the water fills up from the inlet of the flushing pipe 21) is not lower than the upper surface of the ceramic body 10 or the overflow water level of the toilet bowl 12 (i.e., the plane that overflows after the water fills up from the toilet bowl). At the same time, the outlet of the spray pipe 22 is higher than the overflow water level of the inlet of the flushing pipe 21.
[0038] Those skilled in the art will clearly understand the meaning of the water supply pipe described in this embodiment. If those not skilled in the art do not understand the meaning of the water supply pipe, they can refer to the existing toilet tank filling structure. Existing toilets also use a water supply pipe to fill the tank with tap water, and the pipe before the tank is equivalent to the water supply pipe. The spray pipe is connected to the water supply pipe, and tap water is naturally output from the spray pipe. The spray pipe and the water supply pipe are connected sequentially, and can also be understood as an extension of the water supply pipe.
[0039] Understandably, the water spray pipe 22 sprays water towards the inlet of the flushing pipe 21 from a distance. This can be driven by the water pressure inside the tap water pipe itself, or a water pump can be added to the water spray pipe 22 to increase the intensity of the water spray.
[0040] Preferably, a cavity 16 is recessed at the rear of the upper surface of the ceramic body 10, and the flushing water supply assembly 20 is disposed in the cavity 16.
[0041] Preferably, the inlet of the flushing pipe 21 faces horizontally. In this embodiment, the inlet is horizontally oriented laterally, which is the left-right direction when a person uses the toilet.
[0042] Preferably, an overflow port 18 is provided on the upper edge of the rear side wall of the toilet bowl 12, and the flushing water supply assembly 20 further includes a water receiving trough 23. One end of the water receiving trough 23 is located directly below the area between the flushing pipe 21 and the spray pipe 22, and the other end is mounted on the overflow port 18. In this way, water droplets that leak down during the spraying process can be guided into the toilet bowl 12 through the water receiving trough 23.
[0043] Preferably, the flushing water supply assembly 20 further includes a nozzle 24 disposed at the outlet end of the spray pipe 22, wherein the nozzle 24 has a downwardly extending water inlet lip 242 at the lower edge of its outlet.
[0044] Preferably, the inlet of the flushing pipe 21 is shaped like an inverted teardrop, and a water-blocking lip 212 is provided at the bottom, slightly inward. In this embodiment, the water receiving groove 23 and the flushing pipe 21 are connected together as a single unit. For example, they can be injection molded as a single unit or fired from ceramic as a single unit.
[0045] Preferably, the flushing pipe 21 is integrally fired with the ceramic body 10, or the flushing pipe 21 is a plastic pipe connected to the swirl ring channel 14, or the flushing pipe 21 can also be formed by connecting a portion of ceramic pipe and a portion of plastic pipe, with the ceramic pipe portion integrally fired with the ceramic body. In this embodiment, the flushing pipe 21 and the water receiving tank 23 are integrally injection molded plastic parts.
[0046] Preferably, the flushing water supply assembly 20 further includes a switching mechanism for controlling the water spray pipe switch. The switching mechanism includes a start switch 25, a valve 26, and a timer 27. The valve 26 is disposed on the water spray pipe 22. After the start switch 25 is pressed, the valve 26 can be opened. After the valve is opened, the water spray pipe starts spraying water. At the same time, the timer 27 starts timing. After the set time is reached, the valve 26 automatically closes.
[0047] Preferably, it also includes a water pump installed on the water spray pipe 22.
[0048] When flushing, the flush-type tankless toilet of this utility model opens the valve 26 on the spray pipe 22, and the spray pipe 22 sprays tap water into the inlet of the flush pipe 21. The water flows from the flush pipe 21 into the vortex flushing channel 14, and after exiting from the vortex flushing channel, it rotates and flushes the waste in the toilet bowl 12. At the same time as the valve 26 is opened, the delay device 27 counts the opening time of the valve. After the set time is reached, the valve 26 automatically closes.
[0049] Since the height of the inlet of the flushing pipe 21 is greater than the height of the vortex flushing channel 14, the overflow water level of the inlet of the flushing pipe 21 is not lower than the upper surface of the ceramic body 10 or the overflow water level of the toilet bowl 12, and the outlet of the spray pipe 22 is higher than the overflow water level of the inlet of the flushing pipe 21, the sewage in the toilet bowl cannot be traced back to the spray pipe 22 and the tap water pipe in the event of a blockage.
[0050] Example 2
[0051] Please refer to Figures 9 to 10 The difference between Example 2 and Example 1 is that...
[0052] The orientation of the inlet of the flushing pipe is different. In the second embodiment, the inlet of the flushing pipe 21a is vertically upward. Therefore, the spray pipe 22a only needs to spray water vertically downward directly above the inlet of the flushing pipe 21a. The height difference between the outlet of the spray pipe 22a and the inlet of the flushing pipe 21a can ensure the air gap effect.
[0053] Understandably, the function of the flushing pipe 21a is to receive the water jet from the spray pipe 22a and guide it into the swirling channel 14 of the ceramic body 10. Therefore, the shape of the flushing pipe 21a does not need to be specifically limited. It can be a pipe shape or a box shape, as long as the internal cavity can guide the water flow.
[0054] Preferably, the inlet of the flushing pipe 21a is covered with an upper end cover 28, and the upper end cover 28 is provided with a clearance hole corresponding to the outlet of the spray pipe 22a.
[0055] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.
Claims
1. A flush-down tankless toilet, comprising a ceramic body, a recessed toilet bowl on the front of the upper surface of the ceramic body, a swirling flushing channel around the upper part of the toilet bowl, and a flushing water supply assembly disposed on the ceramic body, the flushing water supply assembly comprising a flushing pipe, the outlet of the flushing pipe being connected to the swirling flushing channel, characterized in that: The flushing water supply assembly also includes a spray pipe connected to a tap water pipe. The spray pipe sprays tap water into the flushing pipe through an air gap. The height of the inlet of the flushing pipe is greater than the height of the outlet. Furthermore, the overflow water level at the inlet of the flushing pipe is not lower than the upper surface of the ceramic body or the overflow water level of the toilet bowl. Meanwhile, the outlet of the spray pipe is higher than the overflow water level at the inlet of the flushing pipe.
2. The flush-down tankless toilet according to claim 1, characterized in that: The ceramic body has a recessed cavity on the rear of its upper surface, and the flushing water supply component is disposed in the cavity.
3. The flush-type tankless toilet according to claim 2, characterized in that: The inlet of the flushing pipe faces horizontally, and an overflow outlet is provided on the upper edge of the rear side wall of the toilet bowl. The flushing water supply assembly also includes a water receiving trough, one end of which is located directly below the area between the flushing pipe and the spray pipe, and the other end is mounted on the overflow outlet. The flushing water supply assembly also includes a nozzle provided at the outlet end of the spray pipe. The nozzle has a downwardly extending water-guiding lip on the lower edge of its outlet. The inlet of the flushing pipe is shaped like an inverted teardrop and has a water-blocking lip at the bottom of the inner side.
4. The flush-type tankless toilet according to claim 2, characterized in that: The inlet of the flushing pipe faces vertically upwards.
5. The flush-down tankless toilet according to claim 1, characterized in that: The flushing pipe is integrally fired with the ceramic body, or the flushing pipe is a plastic pipe connected to the swirling flushing ring, or the flushing pipe is formed by connecting a portion of the ceramic pipe and a portion of the plastic pipe, with the ceramic pipe portion integrally fired with the ceramic body.
6. A flushing water supply assembly for a washdown tankless toilet, comprising a flushing pipe, wherein the outlet of the flushing pipe is used to connect to the vortex flushing channel of the ceramic body, characterized in that: It also includes a water spray pipe, which is used to connect to a tap water pipe. The inlet of the flushing pipe receives tap water sprayed by the water spray pipe in an air-to-air manner. The height of the inlet of the flushing pipe is greater than the height of the outlet. At the same time, the outlet of the water spray pipe is higher than the overflow water level of the inlet of the flushing pipe.
7. The flushing water supply assembly for a washdown tankless toilet according to claim 6, characterized in that: The inlet of the flushing pipe faces horizontally and includes a water receiving trough. One end of the water receiving trough is located directly below the area between the flushing pipe and the spray pipe, and the other end is mounted on the overflow port. It also includes a nozzle installed at the outlet of the spray pipe. The nozzle has a downwardly extending water-guiding lip at the lower edge of the outlet. The inlet of the flushing pipe is shaped like an inverted teardrop and has a water-blocking lip at the bottom on the inner side.
8. The flushing water supply assembly for a washdown tankless toilet according to claim 6, characterized in that: The inlet of the flushing pipe faces vertically upward, and the inlet of the flushing pipe is covered with an upper cap. The upper cap has a clearance hole corresponding to the outlet of the spray pipe.
9. The flushing water supply assembly for a washdown tankless toilet according to claim 6, characterized in that: It also includes a switching mechanism for controlling the water spray pipe switch, the switching mechanism including a start switch, a valve and a timer, the valve being installed on the water spray pipe, the valve being opened after the start switch is pressed, and the timer starting to time, the valve automatically closing after the set time is reached; it also includes a water pump installed on the water spray pipe.
10. The flushing water supply assembly for a tankless flush toilet according to claim 9, characterized in that: The water receiving tank and the flushing pipe are connected together, either by injection molding or by ceramic firing.