Flush toilet and method for implementing low-pressure flushing thereof

Abstract

Disclosed in the present invention are a flush toilet and a method for implementing low-pressure flushing thereof. The flush toilet comprises a bowl; a water guide platform extending in the circumferential direction of the bowl is arranged at the top of the inner side surface of the bowl; a flushing water outlet structure is arranged at the top of the rear portion of the bowl; and a water flow output by the flushing water outlet structure flows along the water guide platform. The flushing water outlet structure is located above the center line between the top surface of the bowl and the water guide platform so as to increase the output water spraying distance of the flushing water outlet structure. According to the present invention, the flushing water outlet structure is lifted, so as to increase the spraying distance of the flushing water outlet structure, thereby improving the flushing performance under the same water pressure condition, and meeting the flushing functional requirements under a lower water pressure condition.

Description

Flushing toilet and method for achieving low-pressure flushing

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on the Chinese patent application filed with the State Intellectual Property Office of China on August 4, 2023, with application number: 2023109796576, and the name of the invention: "A flushing toilet and a method for achieving low-pressure flushing thereof". The content of the Chinese patent application is hereby introduced into the text of this application. Technical Field

[0003] The present invention relates to the field of sanitary ware, in particular to a flushing toilet and a method for achieving low-pressure flushing thereof. Background Art

[0004] The brush ring spray is part of the flushing function of the smart toilet. The normal working logic of the existing smart toilet flushing function is: brush ring (cleaning the surface dirt in the toilet bowl) → spray (pushing the dirt in the toilet bowl into the sewage pipe) → brush ring (replenishing the water seal in the toilet bowl). One prior art toilet features a circumferentially extending water guide platform 12' at the top of the bowl 11'. A brush ring outlet 2' is also located at the rear top of the bowl 11'. This brush ring outlet 2' is located below the horizontal centerline A' between the top surface 111' of the bowl 1' and the water guide platform 12'. As shown in Figures 1 and 2, the water sprayed from the brush ring outlet 2' lands at a point B' behind the water guide platform 12', close to the installation location of the brush ring outlet 2'. This causes the point C' where the water pressure drops during the brush ring flow to be further back. This results in poor brush ring performance. When using pipeline water pressure as the flushing function of a smart toilet, pipeline water pressure can significantly impact the integrity and effectiveness of the flushing function. At critical working water pressure, below normal working water pressure, or during peak water usage periods, the brush ring spray function will not be able to meet normal brushing needs due to insufficient water pressure. Therefore, improving and enhancing the flushing and brushing function under low pressure conditions and compatibility with a wider range of water pressure conditions are issues that all bathroom manufacturers need to face.

[0005] Summary of the Invention

[0006] In response to the technical problems existing in the prior art, the present invention provides a flushing toilet and a method for achieving low-pressure flushing thereof. The method raises the setting position of the brush ring water outlet structure to increase the spray distance of the brush ring water outlet structure, thereby meeting the normal flushing brush ring function requirements under low water pressure conditions.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a flush toilet, including a toilet bowl, a water guide platform extending along the circumference of the inner side top of the toilet bowl, a brush ring water outlet structure is provided at the rear top of the toilet bowl, and the water output by the brush ring water outlet structure flows along the water guide platform; the brush ring water outlet structure is located above the center line between the top surface of the toilet bowl and the water guide platform to increase the water outlet spray distance of the brush ring water outlet structure.

[0008] Furthermore, the water guide platform is a continuous ring structure.

[0009] Furthermore, the top of the inner side surface of the toilet bowl extends upward to the top surface of the toilet bowl, or the top of the inner side surface of the toilet bowl except the portion where the brush ring water outlet structure is provided extends to the top surface of the toilet bowl.

[0010] Furthermore, a recess is provided at the top rear portion of the toilet bowl corresponding to the brush ring water outlet structure, the recess leads to the interior of the toilet bowl, and the brush ring water outlet structure is arranged in the recess.

[0011] Furthermore, the top of the inner side surface around the toilet bowl is inwardly concave, and the recess is located further outside the top of the inner side surface of the toilet bowl. The brush ring water outlet structure is located at the left or right end of the rear side wall of the toilet bowl, and the water outlet direction of the brush ring water outlet structure is forward.

[0012] Furthermore, the top of the rear portion of the toilet bowl has an inverted U-shaped concave portion in the left and right longitudinal sections corresponding to the location of the brush ring water outlet structure, and the brush ring water outlet structure is located in the concave portion.

[0013] Furthermore, the brush ring water outlet structure is a brush ring nozzle, which is installed in a corresponding installation port at the rear of the toilet bowl.

[0014] Furthermore, the outer diameter of the thickest part of the brush spray head is 25 to 32 mm.

[0015] Furthermore, the inner wall of the installation opening is provided with a circle of sunken platforms facing the interior of the toilet bowl, so that the brush ring nozzle can be installed in a sunken position; the diameter of the sunken platform ranges from 28 to 35 mm.

[0016] The present invention further provides a method for achieving low-pressure flushing of a toilet, which increases the installation height of a brush ring water outlet structure provided at the rear top of the toilet bowl to increase the spray distance of the brush ring water outlet structure.

[0017] Furthermore, a water guide platform extending along its circumference is provided on the top of the inner side surface of the toilet bowl, and the water output by the brush water outlet structure flows along the water guide platform; the brush ring water outlet structure is arranged above the center line between the top surface of the toilet bowl and the water guide platform.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The brush ring water outlet structure of the present invention is located above the center line between the top surface of the toilet bowl and the water guide platform, so that the water outlet point of the brush ring water outlet structure is higher than the water guide platform. Under the action of the inertia of the water pressure jet and the height difference, the initial location of the jetted water flow from the brush ring water outlet structure on the water guide platform is farther and closer to the front. The position of the brush ring water flow will be pushed forward when the water pressure drops during the flow process, thereby improving the performance of the flushing brush ring under the same water pressure conditions and meeting the requirements of the flushing brush ring function under lower water pressure conditions.

[0020] 2. The water guide platform has a continuous ring structure on all sides, which can achieve the integrity of the water guide platform circumference and improve the water guide performance and easy cleaning of the water guide platform.

[0021] 3. The top of the inner side surface of the toilet bowl extends upward to the top surface of the toilet bowl, or the top of the inner side surface of the toilet bowl, excluding the portion where the brush ring water outlet structure is provided, extends to the top surface of the toilet bowl, so that there is no sanitary dead corner on the top of the inner side surface of the toilet bowl that is difficult to clean.

[0022] 4. A recessed portion is provided at the top rear portion of the toilet bowl, corresponding to the brush ring outlet structure. This recessed portion laterally connects to the interior of the toilet bowl. The brush ring outlet structure is located within this recessed portion, concealing the brush ring outlet structure and making the overall appearance simpler, more aesthetically pleasing, and easier to clean. The top portion of the inner side of the toilet bowl is concave, and the recessed portion is located outside the top portion of the inner side of the toilet bowl. This allows the inner side of the toilet bowl to be concave overall, effectively reducing the area through which the brush ring water flows, and thus the area requiring cleaning.

[0023] 5. The inner wall of the installation opening of the present invention is provided with a circle of sunken platforms facing the interior of the toilet bowl, which can further enhance the hiding effect of the brush ring water outlet structure.

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the flushing toilet and the method for achieving low-pressure flushing of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a cross-sectional schematic diagram of a toilet in the prior art;

[0026] FIG2 is a second cross-sectional schematic diagram of a toilet in the prior art;

[0027] FIG3 is a diagram of the water flow path of a toilet brush ring in the prior art;

[0028] FIG4 is an exploded schematic diagram of the flushing toilet of the present invention;

[0029] FIG5 is a longitudinal cross-sectional schematic diagram of the flushing toilet of the present invention;

[0030] FIG6 is a second longitudinal sectional view of the flushing toilet of the present invention;

[0031] FIG7 is a schematic transverse cross-sectional view of the flushing toilet of the present invention (without the brush ring nozzle installed);

[0032] FIG8 is a partial cross-sectional schematic diagram of the flushing toilet of the present invention;

[0033] FIG9 is a second partial cross-sectional schematic diagram of the flushing toilet of the present invention;

[0034] FIG10 is a schematic transverse cross-sectional view of a flushing toilet of the present invention;

[0035] Figure 11 is a schematic diagram showing the installation position comparison of the brush ring nozzle;

[0036] FIG12 is a diagram of the water flow path of the brush ring of the toilet of the present invention;

[0037] In the figure: 1. Toilet body; 11 / 11', urinal; 111 / 111', top surface, 12 / 12', water guide platform; 13, diversion groove; 14, installation opening; 15, sinking platform; 16, baffle; 17, recessed part; 18, opening; 19, rear side wall; 2. Brush ring nozzle. DETAILED DESCRIPTION

[0038] In the description of the present invention, the use of terms such as "upper," "lower," "left," "right," "front," "back," "inner," "outer," and "top / bottom" to indicate directions or positional relationships is based on the directions or positional relationships shown in the accompanying drawings and is intended solely to facilitate description of the present invention. They do not indicate or imply that the devices referred to must have, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the scope of protection of the present invention. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0039] Referring to Figures 4 and 12 , a flush toilet according to the present invention includes a toilet body 1, which includes a bowl 11. A water guide platform 12 extending circumferentially along the top of the inner wall of bowl 11 is provided. A brush ring outlet structure is provided at the top rear portion of bowl 11, and water outputted by the brush ring outlet structure flows along water guide platform 12. The brush ring outlet structure is specifically located above a horizontal centerline A between the top surface 111 of bowl 11 and water guide platform 12. Therefore, the brush ring water outlet structure is located between the top surface 111 of the toilet bowl 11 and the water guide platform 12, close to the top surface 111. The distance between the brush ring water outlet structure and the top surface 111 of the toilet bowl 11 is smaller than the distance between the brush ring water outlet structure and the water guide platform 12, thereby increasing the water spray distance of the brush ring water outlet structure. Under the same water pressure, the performance of flushing the brush ring is improved. In addition, the flushing function requirements of the brush ring can be met under lower water pressure conditions (such as 0.07MPa to 0.05MPa). In addition, the higher installation position of the brush ring water outlet structure can reduce the surrounding pollution of the brush ring water outlet structure during operation, and it is more convenient to clean the area around the brush ring water outlet structure.

[0040] In this embodiment, the water guide platform 12 is a continuous ring structure. In this way, the integrity of the circumference of the water guide platform 12 can be achieved, and the water guide performance and cleanability of the water guide platform 12 can be improved.

[0041] In this embodiment, the brush ring water outlet structure is located at the left or right end of the rear side wall 19 of the toilet bowl 11, and the water outlet direction of the brush ring water outlet structure is forward. In this embodiment, the brush ring water outlet structure is located at the left end of the rear side wall 19 of the toilet bowl 11.

[0042] Furthermore, the top of the inner side surface of the toilet bowl 11 extends upward to the top surface 111 of the toilet bowl, or the top of the inner side surface of the toilet bowl 11 except for the portion where the brush ring water outlet structure is provided extends to the top surface 111 of the toilet bowl, so that there is no sanitary dead corner on the top of the inner side surface of the toilet bowl 11 that is difficult to clean.

[0043] As a preferred embodiment, a recess 17 is provided at the top rear portion of the toilet bowl 11, corresponding to the brush ring outlet structure. This recess 17 laterally communicates with the interior of the toilet bowl 11, and the brush ring outlet structure is disposed within this recess 17, thereby concealing the brush ring outlet structure. The top of the inner side of the toilet bowl 11 is concave, and the recess 17 is located outside the top of the inner side of the toilet bowl 11. This allows the inner side of the toilet bowl 11 to be concave, effectively reducing the area through which the brush ring water flows, thereby reducing the area to be cleaned.

[0044] As a preferred embodiment, the present invention also includes a baffle 16, located on the side of the recess 17 near the interior of the toilet bowl. This baffle 16 further shields the brush ring water outlet structure and prevents the brush ring water flow from flowing around the guide platform 12 and then flushing the brush ring water outlet structure. The top of the baffle 16 supports the top surface 111 of the toilet bowl 11, and the rear end of the baffle 16 supports the rear side wall of the toilet bowl 11. The front end of the baffle 16 extends forward and forms an opening 18 between the recess 17 and the interior of the toilet bowl, which faces the guide platform 12. The bottom end of the baffle 16 is suspended in the air, and the baffle 16 is located on the inner contour formed by the inner side surfaces of the toilet bowl 1. The height of the baffle 16 gradually decreases from its rear end to its front end. In other words, the height of the baffle 16 along the height of the toilet body 1 is gradually changing, resulting in a tilted bottom end with a height difference of approximately 10° to 15°, as shown in Figure 9. In this way, the inner side of the toilet bowl 11 is made to have no edges or short edges as a whole, thereby improving the simplicity of the inner side of the toilet bowl and achieving the function of easy cleaning.

[0045] Preferably, the brush ring water outlet structure is a brush ring nozzle 2, so as to utilize the brush ring nozzle 2 to increase the impact force of the water flow and simplify the structure of the toilet. In other embodiments, the brush ring water outlet structure is a flushing jet port integrally formed in the toilet. The brush ring nozzle 2 is installed at the corresponding mounting opening 14 on the rear side wall of the toilet 11, and the water outlet end of the brush ring nozzle 2 faces the front of the toilet 11. The outer diameter of the thickest part of the brush nozzle is 25 to 32 mm. The inner wall of the mounting opening 14 is provided with a circle of sinking platforms 15 facing the inside of the toilet 11, and the diameter of the sinking platforms ranges from 28 to 35 mm, so that the brush ring nozzle 2 can be installed downward to further enhance the hidden effect.

[0046] In a flushing toilet of the present invention, the change of the spray landing position of the brush ring nozzle 2 will affect the different positions of water pressure loss of the brush ring spray water flow during its movement. When the brush ring nozzle 2' is installed at a lower position (below the center line A), the landing position B' of the water flow sprayed therefrom on the water guide platform 12 is close to the installation port 14, so that the brush ring water flow contacts the water guide platform 12 earlier after spraying, resulting in a longer flow stroke of the initial spray water flow, thereby increasing the water pressure loss during the water flow process; while the brush ring nozzle 2 of the present invention is installed at an upper position (above the center line A), and the landing position B of the water flow sprayed therefrom on the water guide platform 12 is farther away from the installation port 14, as shown in Figures 11 and 12, so that the brush ring water flow contacts the water guide platform 12 at a relatively distant position after spraying, reducing the water pressure loss at the initial position of the spray water column, advancing the water pressure drop position of the spray water column, and making the water pressure drop position C of the brush ring water flow more forward during the flow process, thereby improving the flushing brush ring performance under the same water pressure conditions, and meeting the flushing brush ring function requirements under lower water pressure conditions. Furthermore, the height and distance of the jet water column can be increased to enhance the utilization of the jet water pressure inertia force and to increase the potential energy falling force.

[0047] The invention discloses a method for flushing a toilet to achieve low-pressure flushing: the installation height of a brush ring water outlet structure arranged on the rear top of the toilet bowl is increased to increase the spray distance of the brush ring water outlet structure.

[0048] In this embodiment, a water guide platform extending along the circumference of the inner top surface of the toilet bowl is provided. Water output from the brush ring water outlet structure can flow along the water guide platform to achieve the brush ring function. Specifically, the brush ring water outlet structure is positioned above the centerline between the top surface of the toilet bowl and the water guide platform (in this embodiment, the centerline is horizontal). When the brush ring water outlet structure is installed at a higher position, the spray distance of the water flow it sprays is also increased, preventing the brush ring water flow from prematurely contacting the water guide platform, which would cause the initial spray flow to flow longer and thus increase water pressure loss during the water flow process. In other words, the method of the present invention ensures that the brush ring water flow contacts the water guide platform at a relatively distant position after being sprayed, reducing water pressure loss at the initial position of the spray water column and advancing the water pressure drop point of the spray water column, so that the water pressure drop point of the brush ring water flow is further forward during the flow process, thereby improving the flushing performance of the brush ring under the same water pressure conditions and meeting the flushing function requirements under lower water pressure conditions. Furthermore, the height and distance of the jet water column can be increased to enhance the utilization of the jet water pressure inertia force and to increase the potential energy falling force.

[0049] The present invention provides a flushing toilet and a method for achieving low-pressure flushing thereof. The parts not involved (such as the structure of the brush ring nozzle, etc.) are the same as those in the prior art or can be achieved by using the prior art.

[0050] The above embodiments are only used to further illustrate a flushing toilet and a method for achieving low-pressure flushing thereof according to 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 scope of protection of the technical solution of the present invention. Industrial Applicability

[0051] The present invention discloses a flushing toilet and a method for achieving low-pressure flushing. The flushing toilet includes a bowl, a water guide platform extending circumferentially along the top of the inner side of the bowl, and a brush ring outlet structure disposed at the top of the rear portion of the bowl. Water output from the brush ring outlet structure flows along the water guide platform. The brush ring outlet structure is positioned above the centerline between the top surface of the bowl and the water guide platform to increase the water spray distance of the brush ring outlet structure. By raising the position of the brush ring outlet structure to increase the spray distance of the brush ring outlet structure, the present invention improves the flushing brush ring performance under the same water pressure conditions and meets the flushing brush ring functional requirements under lower water pressure conditions, thus having industrial applicability.

Claims

1. A flush toilet, comprising a toilet bowl, wherein the top of the inner side of the toilet bowl is provided with a water guide platform extending along the circumference thereof, and a brush ring water outlet structure is provided at the top of the rear portion of the toilet bowl, and the water flow output by the brush ring water outlet structure flows along the water guide platform; characterized in that: The brush ring water outlet structure is located above the center line between the top surface of the toilet bowl and the water guide platform to increase the water outlet spray distance of the brush ring water outlet structure.

2. The flushing toilet according to claim 1, characterized in that: The water guide platform is in a continuous ring structure.

3. The flushing toilet according to claim 1, characterized in that: The top of the inner side surface of the toilet bowl extends upward to the top surface of the toilet bowl; or, the top of the inner side surface of the toilet bowl, except for the part where the brush ring water outlet structure is arranged, extends to the top surface of the toilet bowl.

4. The flushing toilet according to claim 1, 2 or 3, characterized in that: A recess is provided at the top of the rear portion of the toilet bowl corresponding to the brush ring water outlet structure. The recess is laterally connected to the interior of the toilet bowl, and the brush ring water outlet structure is arranged in the recess.

5. The flushing toilet according to claim 4, characterized in that: The top of the inner side surface around the toilet bowl is in a concave shape, and the concave part is located outside the top of the inner side surface of the toilet bowl.

6. The flushing toilet according to claim 1, characterized in that: The brush ring water outlet structure is located at the left end or the right end of the rear side wall of the toilet bowl, and the water outlet direction of the brush ring water outlet structure is forward.

7. The flushing toilet according to claim 1 or 6, characterized in that: The brush ring water outlet structure is a brush ring nozzle, and the brush ring nozzle is installed at a mounting opening correspondingly arranged on the rear side wall of the toilet bowl.

8. The flushing toilet according to claim 7, characterized in that: The outer diameter of the thickest part of the brush ring nozzle is 25-32 mm; the inner wall of the installation opening is provided with a circle of sinking platform facing the inside of the toilet bowl, so that the brush ring nozzle can be sunken for installation; the diameter range of the sinking platform is 28-35 mm.

9. A method for flushing a toilet to achieve low-pressure flushing, characterized in that: The installation height of the brush ring water outlet structure arranged at the rear top of the toilet bowl is increased to increase the water outlet spray distance of the brush ring water outlet structure.

10. The method for realizing low-pressure flushing of a flushing toilet according to claim 9, characterized in that: A water guide platform extending along the circumference is provided on the top of the inner side of the toilet bowl, and the water output by the brush ring water outlet structure flows along the water guide platform; the brush ring water outlet structure is arranged above the center line between the top surface of the toilet bowl and the water guide platform.

Images