Jet guide and flush toilet

Abstract

The application discloses a kind of injection guide pipe and flush toilet, injection guide pipe has water inlet end and water outlet end, water inlet end is communicated with injection guide water pipe, water outlet end is communicated with the injection port of toilet bowl, injection guide pipe has a guide curve, guide curve extends to injection port along the axial direction of injection port and is connected with the outer wall surface of toilet bowl, and guide curve is partially surrounded from the lower side of injection port along the circumferential direction of injection port.The injection guide pipe and flush toilet of the application, by setting a guide curve in the injection guide pipe along the axial direction of injection port, and guide curve is partially surrounded from the lower side of injection port along the circumferential direction of injection port, water flows out from injection guide water pipe and flows onto guide curve, and then flows along guide curve to injection port and is sprayed from injection port along the axial direction of injection port, so as to avoid the direction of water spray from injection port deviating to one side of injection port when water is sprayed, and cannot apply injection force on the dirt between injection port and sewage outlet.

Description

Technical Field

[0001] The present invention relates to the technical field of toilets, and in particular to a jet guide pipe and a flush toilet. Background Art

[0002] Flushing toilets utilize a jet of water to induce a siphon effect to remove waste. This jet of water is generated by water flowing from a water tank, passing through a jet aqueduct and a jet pipe, and then ejecting from a jet port into the toilet bowl. This creates a strong force when the water is ejected, thereby discharging waste from the bowl. Furthermore, to conserve water, water-saving toilets have been developed that use a single-sided jet aqueduct to deliver water. However, due to the low water consumption and the fact that the single-sided jet aqueduct is positioned on one side of the jet port, the water flowing from the jet aqueduct into the jet pipe is then ejected from the jet port in a direction that is biased toward the jet port. This force pushes waste between the jet port and the sewage outlet toward the outlet, making it difficult for waste to be discharged from the outlet and even causing it to splash into the area surrounding the outlet. Summary of the Invention

[0003] The purpose of the present invention is to provide a jet guide pipe and a flush toilet to solve the technical problem that the direction of the jet force of the water flow in the current jet pipe when it is ejected from the jet outlet deviates from the sewage outlet, making it difficult to discharge the sewage from the sewage outlet.

[0004] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] The present invention provides a jet guide pipe, which has a water inlet end and a water outlet end, the water inlet end is connected to the jet water pipe, and the water outlet end is connected to the jet outlet of the toilet bowl. The jet guide pipe has a guide curved surface, which extends to the jet outlet along the axial direction of the jet outlet and is connected to the outer wall surface of the toilet bowl, and the guide curved surface partially surrounds the jet outlet from below the jet outlet along the circumference of the jet outlet.

[0006] In an embodiment of the present invention, the guide curved surface surrounds at least a lower half of the injection port.

[0007] In an embodiment of the present invention, the diameter of the injection port is D, and the length of the guide curved surface extending along the axial direction of the injection port is L, which satisfies the relationship: 1.5D≤L≤2D.

[0008] In an embodiment of the present invention, a distance between the guide curved surface and the inner wall surface of the injection port is 0 to 3 mm.

[0009] In an embodiment of the present invention, one end of the guide curved surface in the axial direction of the injection port is a first axial end, and one end of the guide curved surface in the circumferential direction of the injection port is a first side end. The injection water conduit further includes a connecting curved surface, and the connecting curved surface has a first side edge and a second side edge. The first side edge of the connecting curved surface is connected to the injection water conduit, and the second side edge of the connecting curved surface is connected to the first side end of the guide curved surface. The tangent direction of the connecting curved surface transitions from the water outlet direction of the injection water conduit to the axial direction of the injection port from its first side edge to its second side edge.

[0010] In an embodiment of the present invention, the other end of the guide curved surface in the axial direction of the injection port is a second axial end, and the injection guide pipe further has a connecting outer surface, and the connecting outer surface is arranged along the extension direction of the injection water pipe. The connecting outer surface has a first side edge and a second side edge, and the first side edge of the connecting outer surface is connected to the injection water pipe, and the second side edge of the connecting outer surface is connected to the connecting curved surface and the second axial end through a first circular arc transition surface.

[0011] In an embodiment of the present invention, a spiral guide surface is provided in the jet water pipe, and a busbar spirally moves around a vertical axis from the water inlet end of the jet water pipe to the water outlet end of the jet water pipe to form the spiral guide surface, and the first side of the connecting curved surface is connected to the spiral guide surface.

[0012] In an embodiment of the present invention, the jet water conduit further has a belly arc surface, the belly arc surface extends from the water inlet end of the jet water conduit to the water outlet end of the jet water conduit along a cylindrical spiral line parallel to the spiral guide surface, and the belly arc surface is located on the side of the spiral guide surface away from the vertical axis, the first side edge of the connecting outer surface is connected to the belly arc surface, and the connecting outer surface is an arc surface extending along the arc direction of the belly arc surface.

[0013] In an embodiment of the present invention, the guide curved surface further has a second side end in the circumferential direction of the injection port, and the injection water conduit further has a connecting inclined surface, the connecting inclined surface extending along the tangent direction of the guide curved surface at the second side end, the connecting inclined surface having a first side edge and a second side edge, the first side edge of the connecting inclined surface being connected to the second side end, and the second side edge of the connecting inclined surface being connected to the connecting outer surface through a second circular arc transition surface.

[0014] The present invention also provides a flush toilet comprising the above-mentioned jet guide pipe.

[0015] The characteristics and advantages of the present invention are:

[0016] The jet guide pipe and flush toilet of the present invention provide a guide curved surface in the jet guide pipe along the axial direction of the jet outlet, and the guide curved surface partially surrounds the jet outlet from below the jet outlet along the circumferential direction of the jet outlet. After water flows out of the jet guide pipe, it flows onto the guide curved surface, then flows along the guide curved surface to the jet outlet and is ejected from the jet outlet along the axial direction of the jet outlet, thereby preventing the direction of the water flow from being deviated to one side of the jet outlet when being ejected from the jet outlet, and preventing the jet force from being applied to the waste between the jet outlet and the sewage outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a front cross-sectional view of the injection guide tube of the present invention.

[0019] Figure 2 It is a side sectional view of the injection guide tube of the present invention.

[0020] Figure 3 It is a perspective view of the injection guide tube of the present invention.

[0021] Figure 4 It is a three-dimensional view of the injection guide tube of the present invention.

[0022] Figure 5 It is a three-dimensional view of the jet water conduit of the present invention.

[0023] Figure 6 This is a three-dimensional view of the jet water conduit of the present invention from another perspective.

[0024] Figure 7 for Figure 6 Cross-sectional views of points A, B, C, and D.

[0025] Figure 8 It is a partial cross-sectional view of the flush toilet of the present invention.

[0026] Figure 9 It is a side sectional view of a flush toilet of the present invention.

[0027] In the picture:

[0028] 100. Jet guide tube; 101. Water inlet end; 102. Water outlet end; 1. Guide curved surface; 11. First side end; 12. Second side end; 13. First axial end; 14. Second axial end; 15. Intermediate cylindrical surface; 16. First lateral cylindrical surface; 17. Second lateral cylindrical surface; 2. Connecting curved surface; 21. First side edge; 22. Second side edge; 23. Third side edge; 24. Fourth side edge; 3. Connecting outer surface; 31. First side edge; 32. Second side edge; 33. Third side edge; 34. Fourth side edge; 4. Connecting inclined surface; 41. First side edge; 42. Second side edge; 43. Third side edge; 5. First arc transition surface; 6. Second arc transition surface;

[0029] 200, jet water pipe; 2001, water inlet; 2002, water outlet; 201, spiral guide surface; 202, belly arc surface; 2021, first side; 2022, second side; 2023, third side; 2024, fourth side; 203, third arc transition surface; 204, fourth arc transition surface; 300, water tank; 301, drain outlet; 302, connecting pipe; 400, toilet bowl; 401, jet outlet; 4011, inner wall surface; 402, water cover; 403, sewage outlet; 500, siphon. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Implementation Method 1

[0032] like Figures 1-4 As shown, the present invention provides a jet guide pipe 100, which has a water inlet end 101 and a water outlet end 102. The water inlet end 101 is connected to the jet water pipe 200, and the water outlet end 102 is connected to the jet port 401 of the toilet bowl 400. The jet guide pipe 100 has a guide curved surface 1, which extends to the jet port 401 along the axial direction Z of the jet port 401 and is connected to the outer wall of the toilet bowl 400, and the guide curved surface 1 partially surrounds the jet port 401 from the bottom of the jet port 401 along the circumference of the jet port 401.

[0033] The jet guide pipe 100 of the present invention provides a guide curved surface 1 along the axial direction Z of the jet port 401 in the jet guide pipe 100, and partially surrounds the jet port 401 along the circumferential direction of the jet port 401 from below the jet port 401. After the water flows out of the jet water guide pipe 200, it flows onto the guide curved surface 1, and then flows along the guide curved surface 1 to the jet port 401 and is ejected from the jet port 401 along the axial direction Z of the jet port 401, thereby preventing the direction of the water flow from being ejected from the jet port 401 from being biased toward one side of the jet port 401 and failing to exert the jet force on the dirt between the jet port 401 and the sewage outlet 403.

[0034] To avoid problems like cracking and leaks, the flush toilet's bowl 400, jet guide tube 100, and jet water conduit 200 are integrally formed. However, due to manufacturing limitations, the jet guide tube 100 and jet water conduit 200 form an internal channel with the outer wall of the bowl 400, making it difficult to connect the jet outlet 401 to the jet water conduit 200 via a guide circular tube of the same diameter as the jet outlet 401. The present invention achieves a jet-guiding effect by partially surrounding the jet outlet 401 from below along its circumference. This allows water to be ejected from the jet outlet 401 as a concentrated stream, axially along the jet outlet 401. This generates greater propulsion force, pushing waste ahead of it out of the bowl 400's waste outlet 403. Furthermore, the present invention facilitates manufacturing. Specifically, the guide curved surface 1 is a cylinder, and a main line moves parallel to a directrix to form the cylinder, and the main line is parallel to the axial direction Z of the injection port 401 and the direction of the sewage outlet 403. The directrix includes but is not limited to a polyline formed by connecting one or more of a circular arc line arranged concentrically with the injection port 401, a curve with a curvature similar to that of the circular arc line, and a straight line tangent to the circular arc line or the curve. In this embodiment, the shape of the injection port 401 is generally circular. Optionally, the shape of the injection port is generally elliptical, square, or other shapes. Therefore, the circumferential direction of the injection port described in the present invention refers not only to the circumferential direction of the circular injection port or a direction close to the circumferential direction, but also to the peripheral contour direction of injection ports of other shapes or a direction close to the peripheral contour direction.

[0035] The effect of jet guidance is related to the area surrounded by the guide surface 1 around the jet outlet 401. If the area surrounded by the guide surface 1 around the jet outlet 401 is too small, the area of ​​the guide surface 1 acting on the water flow is too small, making it difficult to jet guide the entire water flow. In the embodiment of the present invention, the guide surface 1 surrounds at least the lower half of the jet outlet 401. This allows most of the water discharged from the jet water pipe 200 to fall onto the guide surface 1, and then flow along the guide surface 1 to the jet outlet 401 for ejection. Specifically, Figure 1As shown, the guide curved surface 1 includes a middle cylindrical surface 15, a first side cylindrical surface 16, and a second side cylindrical surface 17. The first and second side cylindrical surfaces 16, 17 are connected to either side of the middle cylindrical surface 15. The directrix of the middle cylindrical surface 15 is a circular arc concentric with the jet outlet 401, with an arc angle of less than 180 degrees. The directrix of the first side cylindrical surface 16 is a curve with a curvature less than that of the circular arc, and the directrix of the second side cylindrical surface 17 is a straight line tangent to one end of the circular arc. By providing the first and second side cylindrical surfaces 16, 17 on either side of the middle cylindrical surface 15, the guide curved surface 1 surrounds the lower half of the jet outlet 401 while opening toward either side, facilitating the flow of water into the middle cylindrical surface 15.

[0036] like Figure 1 and Figure 2 As shown, the effect of the jet guide is also related to the guide length L of the guide curve 1 (that is, the length L of the guide curve 1 extending along the axial direction Z of the jet port 401). If the guide length L of the guide curve 1 is too small, the distance the water flows on the guide curve 1 is too small, and the direction of the water flow cannot be completely guided to the axial direction Z of the jet port 401; if the distance the water flows on the guide curve 1 is too long, the water flow loses too much energy, which will affect the strength of the water jet. In an embodiment of the present invention, the diameter of the jet port 401 is D, and the length of the guide curve 1 extending along the axial direction Z of the jet port 401 is L, which has the relationship: 1.5D≤L≤2D. Specifically, the jet flushing effect is related to the flow rate of the water jet. The flow rate must be large enough to ensure that the dirt is flushed clean by the water flow, and the flow rate of the water jet is related to the diameter of the jet port 401 and the speed of the water flow. Combined Figure 8 As shown, the speed of the water flow is related to the energy possessed by the water when it is discharged from the drain outlet 301 of the water tank 300. Under the condition of a constant flow rate, the greater the energy possessed by the water when it is discharged from the drain outlet 301 of the water tank 300, the smaller the diameter D of the jet outlet 401, and vice versa. Therefore, the diameter D of the jet outlet 401 of the toilet bowl 400 of different types of flush toilets is different. For example, the diameter D of the jet outlet 401 of a low-tank flush toilet and a sunken-tank flush toilet is 28 mm-32 mm, the diameter D of the jet outlet 401 of an ordinary high-tank flush toilet is 24 mm-27 mm, and the diameter D of the jet outlet 401 of a flush toilet with a water pump is 10 mm-14 mm.

[0037] To ensure that water flows along the guide curved surface 1 to the jet outlet 401 and avoids turbulence in the water flow direction at the junction between the guide curved surface 1 and the jet outlet 401, in an embodiment of the present invention, the spacing between the guide curved surface 1 and the inner wall surface 4011 of the jet outlet 401 is 0 to 3 mm. Specifically, the spacing between the intermediate cylindrical surface 15 and the inner wall surface 4011 of the jet outlet 401 remains constant along the circumference of the jet outlet 401 and does not exceed 3 mm. Preferably, the intermediate cylindrical surface 15 is substantially flush with the inner wall surface 4011 of the jet outlet 401, that is, the arc diameter of the intermediate cylindrical surface 15 is 0 to 3 mm larger than the diameter of the jet outlet 401. The spacing between the first side cylindrical surface 16 and the second side cylindrical surface 17 and the inner wall surface 4011 of the jet outlet 401 gradually increases away from the intermediate cylindrical surface 15, but does not exceed 3 mm.

[0038] like Figure 2 and Figure 3 As shown, in an embodiment of the present invention, one end of the guide curved surface 1 in the axial direction Z of the injection port 401 is a first axial end 13, and one end of the guide curved surface 1 in the circumferential direction of the injection port 401 is a first side end 11. The injection water pipe 200 further has a connecting curved surface 2, and the connecting curved surface 2 has a first side edge 21 and a second side edge 22. The first side edge 21 of the connecting curved surface 2 is connected to the injection water pipe 200, and the second side edge 22 of the connecting curved surface 2 is connected to the first side end 11 of the guide curved surface 1, and the tangent direction of the connecting curved surface 2 from its first side edge 21 to its second side edge 22 transitions from the water outlet direction of the injection water pipe 200 to the axial direction Z of the injection port 401. The length of the guide surface 1 in the axial direction Z of the injection port 401 is greater than its length in the circumferential direction of the injection port 401. By connecting the first side end 11 to the injection water pipe 200, the water flow can flow to the guide surface 1 more quickly, and the first side end 11 of the guide surface 1 is connected to the injection water pipe 200 through the connecting surface 2. The connecting surface 2 is used to preliminarily guide the water flow discharged from the injection water pipe 200, thereby reducing the angle between the flow direction of the water flow when entering the guide surface 1 and the axial direction Z of the injection port 401, and then further guiding it through the guide surface 1 to ensure that the water flow is ejected from the injection port 401 along the axial direction Z of the injection port 401.

[0039] like Figure 5 and Figure 6As shown, the jet water conduit 200 has a spiral guide surface 201. A generatrix spirals around a vertical axis from the water inlet 2001 of the jet water conduit 200 to the water outlet 2002 of the jet water conduit 200, forming the spiral guide surface 201. The first side 21 of the connecting curved surface 2 is connected to the spiral guide surface 201. Water enters the jet water conduit 200 from the water inlet 2001 and flows under its own gravity along the spiral guide surface 201 to the water outlet 2002 of the jet water conduit 200. The water then flows along the connecting curved surface 2 to the guide curved surface 1. After the water flows into the water inlet end 2001 of the jet water pipe 200, it can flow out along the spiral guide surface 201 under the action of its own gravity, so that the water flows in a spiral motion in the jet water pipe 200, thereby generating a rotational inertia and impulse, which on the one hand increases the water outlet speed and increases the energy of the water flow; on the other hand, it can ensure that the water flows in the tangential direction of the spiral guide surface 201, with low pipe resistance, and can avoid the water flow from colliding with other parts in the jet water pipe 200 to generate noise, and at the same time is conducive to forming a concentrated rotating water flow. Therefore, combined with Figure 3 As shown, the first side end 11 of the guide curved surface 1 is connected to the spiral guide surface 201 via the connecting curved surface 2 so that the gathered rotating water flow discharged along the spiral guide surface 201 can fall onto the guide curved surface 1 along the connecting curved surface 2 .

[0040] Specifically, such as Figure 8 As shown, the drain outlet 301 of the water tank 300 is connected to the jet guide pipe 100 via the jet water conduit 200, and water is then ejected from the jet outlet 401 of the toilet bowl 400. The generatrix is ​​generally a straight line arranged horizontally, that is, the spiral guide surface 201 is a flat spiral surface. By configuring the spiral guide surface 201 as a flat spiral surface, it is better connected to the jet guide pipe 100, allowing water to flow through the jet guide pipe 100 along the axial direction Z of the jet outlet 401 and be ejected from the jet outlet 401 of the toilet bowl 400. The water inlet end 2001 of the jet water conduit 200 is connected to the drain outlet 301 of the water tank 300, and the water outlet end 2002 of the jet water conduit 200 is connected to the jet outlet 401 of the toilet bowl 400. Since the speed of water discharged from the water tank 300 in existing flush toilets is relatively low, except for flush toilets with an external water pump, in other flush toilets, the water flow from the drain outlet 301 of the water tank 300 to the injection port 401 of the toilet bowl 400 is mainly converted into kinetic energy by gravitational potential energy. Therefore, by setting the spiral guide surface 201 as the bottom surface of the injection water pipe 200 in the vertical direction, the water flow enters from the water inlet end 2001 of the injection water pipe 200 and falls on the spiral guide surface 201 by its own gravity, and then flows along the spiral guide surface 201.

[0041] like Figure 3 and Figure 4As shown, the other end of the guide curved surface 1 in the axial direction Z of the injection port 401 is the second axial end 14. The injection guide tube 100 further has a connecting outer surface 3, which is arranged along the extension direction of the injection water pipe 200. The connecting outer surface 3 has a first side edge 31 and a second side edge 32. The first side edge 31 of the connecting outer surface 3 is connected to the injection water pipe 200, and the second side edge 32 of the connecting outer surface 3 is connected to the connecting curved surface 2 and the second axial end 14 through the first arc transition surface 5.

[0042] Combine Figure 5 and Figure 6 As shown, the jet water conduit 200 also has a belly arc surface 202, which extends from the water inlet end 2001 of the jet water conduit 200 to the water outlet end 2002 of the jet water conduit 200 along a cylindrical spiral line parallel to the spiral guide surface 201, and the belly arc surface 202 is located on the side of the spiral guide surface 201 away from the vertical axis, and the first side edge 31 of the connecting outer side surface 3 is connected to the belly arc surface 202, and the connecting outer side surface 3 is an arc surface extending along the arc direction of the belly arc surface 202 (that is, the extension direction of the cylindrical spiral line). In order to prevent a part of the water flow from being thrown to the outside of the spiral guide surface 201 (i.e., the side away from the vertical axis) under the action of centrifugal force due to the increase in speed during the flow along the spiral guide surface 201, causing the water flow to diverge and the movement trajectory to be disordered, a ventral arc surface 202 is set on the outside of the spiral guide surface 201. When a part of the water flow with a higher speed is thrown to the outside of the spiral guide surface 201 due to the centrifugal force, it can fall on the ventral arc surface 202, and then continue to make spiral motion along the ventral arc surface 202. After being discharged from the water outlet end 2002 of the jet water pipe 200, this part of the water flow can flow from the second axial end 14 of the guide curved surface 1 to the guide curved surface 1 in sequence along the connecting outer surface 3 and the first arc transition surface 5.

[0043] Specifically, when a moving point moves at a constant speed along the straight generatrix of the cylindrical surface, and the generatrix rotates at a constant speed around the axis of the cylindrical surface at the same time, the trajectory of the moving point is a cylindrical spiral. Therefore, the ventral arc surface 202 moves along the cylindrical spiral line parallel to the spiral guide surface 201, so that the water flow makes a spiral motion synchronously with the water flow on the spiral guide surface 201 when flowing along the ventral arc surface 202. In this embodiment, the ventral arc surface 202 is located on the cylindrical surface where the cylindrical spiral line is located, that is, the ventral arc surface 202 only has a curvature in the direction of the cylindrical spiral line and does not have a curvature in the vertical direction, so that it can be better connected with the injection guide pipe 100, and is conducive to the water flow on the ventral arc surface 202 entering the injection guide pipe 100 and being able to be ejected along the axial direction Z of the injection port 401 under the guidance of the injection guide pipe 100. Optionally, the ventral arc surface also has a curvature in the vertical direction.

[0044] like Figure 5 and Figure 6 As shown, the jet water conduit 200 further includes a third arcuate transition surface 203 and a fourth arcuate transition surface 204. The side of the spiral guide surface 201 closest to the vertical axis is connected to the outer wall of the toilet bowl 400. The side of the spiral guide surface 201 further from the vertical axis is connected to one side of the ventral arcuate surface 202 via the third arcuate transition surface 203. The other side of the ventral arcuate surface 202 is connected to the outer wall of the toilet bowl 400 via the fourth arcuate transition surface 204. The provision of the third arcuate transition surface 203 and the fourth arcuate transition surface 204 ensures that water flowing from the water inlet end 2001, regardless of where it splashes, will flow down to the spiral guide surface 201, thus converging the water flow. The pipe of the jet water pipe 200 is formed by the spiral guide surface 201, the belly arc surface 202, the third arc transition surface 203 and the fourth arc transition surface 204 in conjunction with the outer wall surface of the toilet bowl 400, which makes it easy to integrate the jet water pipe 200 and the toilet bowl 400 without problems such as cracking and leakage.

[0045] like Figure 1 and Figure 3 As shown, the guide curved surface 1 further has a second side end 12 in the circumferential direction of the injection port 401, and the injection water conduit 200 further has a connecting inclined surface 4, which extends along the tangential direction of the guide curved surface 1 at the second side end 12, and has a first side edge 41 and a second side edge 42. The first side edge 41 of the connecting inclined surface 4 is connected to the second side end 12 of the guide curved surface 1, and the second side edge 42 of the connecting inclined surface 4 is connected to the connecting outer side surface 3 through a second arc transition surface 6. By setting the connecting bevel 4, when a part of the water flow along the ventral arc surface 202 to the connecting outer side surface 3 cannot flow along the connecting outer side surface 3 and the first arc transition surface 5 from the second axial end 14 of the guide curved surface 1 to the guide curved surface 1 due to its large rotational inertia due to its large speed, this part of the water flow can continue to flow along the connecting outer side surface 3 and the second arc transition surface 6 to the connecting bevel 4 under its own rotational inertia, and then flow from the second side end 12 of the guide curved surface 1 to the guide curved surface 1 along the connecting bevel 4, and thus be ejected from the injection port 401 along the axial direction Z of the injection port 401 under the guiding action of the guide curved surface 1.

[0046] Specific, combined Figure 1 、 Figure 5 as well as Figure 8As shown, the connecting slope 4 further has a third side 43, which is connected to the outer wall of the toilet bowl 400. The connecting outer side surface 3 further has a third side 33 and a fourth side 34. The third side 33 is connected to the first side 41 of the connecting slope 4 via a second arc transition surface 6, and the fourth side 34 is connected to the outer wall of the toilet bowl 400. The connecting curved surface 2 further has a third side 23 and a fourth side 24. The third side 23 is connected to the first side 31 of the connecting outer side surface 3 via a first arc transition surface 5, and the fourth side 24 is connected to the outer wall of the toilet bowl 400. The two ends of the first arc transition surface 5 are connected to the third arc transition surface 203 and the second arc transition surface 6, and the two ends of the second arc transition surface 6 are connected to the first arc transition surface 5 and the outer wall of the toilet bowl 400. It can be seen that the pipeline of the jet guide pipe 100 is formed by the guide surface 1, the connecting curved surface 2, the connecting inclined surface 4, the connecting outer side surface 3, the first circular arc transition surface 5 and the second circular arc transition surface 6 in conjunction with the outer wall surface of the toilet bowl 400. The water flow from the jet water pipe 200 into the jet guide pipe 100 at any position can be diverted to the guide curved surface 1, and then under the guiding action of the guide curved surface 1, a bundled water flow is formed along the axial direction Z of the injection port 403, and the injection force is concentrated, thereby pushing the dirt in front into the sewage outlet 403. At the same time, it is also beneficial to integrally process the jet guide pipe 100, the jet water pipe 200 and the toilet bowl 400.

[0047] In an embodiment of the present invention, the width of the spiral guide surface 201 in the busbar direction (i.e., the horizontal direction) is gradually reduced along the direction of spiral movement, so that the water flow is continuously pressurized during the process of flowing along the spiral guide surface 201, thereby increasing the injection speed of the water when it passes through the injection guide pipe 100 and is ejected from the injection port 401.

[0048] Specifically, to ensure that spiral guide surface 201 has sufficient flow area, that is, that spiral guide surface 201 can receive the entire water flow and thus flow only along spiral guide surface 201, the width of spiral guide surface 201 is set according to the flow rate of water discharged from water tank 300 each time. The greater the flow rate, the larger the width of spiral guide surface 201, and vice versa. The cross-sectional area of ​​the channel along the spiral motion direction of the jet water conduit 200 also gradually decreases.

[0049] In the embodiment of the present invention, the width of the spiral guide surface 1 at the water inlet end 101 is 50mm-70mm, and the width of the spiral guide surface 1 at the water outlet end 102 is 40mm-55mm. In this embodiment, the water tank 200 of the flush toilet is a sunken water tank, the width of the spiral guide surface 1 at the water inlet end 101 is 55mm-70mm, preferably 65mm, and the width of the spiral guide surface 1 at the water outlet end 102 is 45mm-55mm, preferably 50mm. Figure 3 and Figure 4As shown, the cross-sectional areas of the four channels A, B, C, and D selected in sequence along the spiral motion direction on the jet water pipe 100 are 2000 mm 2 、1800mm 2 , 1400mm 2 , 1200mm 2 In another embodiment, the water tank of the flush toilet is a high water tank, the width of the spiral guide surface 1 at the water inlet end 101 is 50mm-60mm, preferably 55mm, and the width of the spiral guide surface 1 at the water outlet end 102 is 40mm-50mm, preferably 45mm.

[0050] like Figure 5 、 Figure 6 as well as Figure 7 As shown, in an embodiment of the present invention, the width of the ventral arc surface 202 in the vertical direction gradually increases along its extension direction, the arc length of the third arc transition surface 203 gradually decreases from the water inlet end 2001 of the jet water pipe 200 to the water outlet end 2002 of the jet water pipe 200, and the arc length of the fourth arc transition surface 204 gradually decreases from the water inlet end 2001 of the jet water pipe 200 to the connection position between the ventral arc surface 202 and the outer wall surface of the toilet bowl 400. Since the speed of water flow is low when entering the water inlet end 2001 of the jet water pipe 200 and the flow direction is uncertain, the third arc transition surface 203 and the fourth arc transition surface 204 can act on the water flow in a larger area while the ventral arc surface 202 can act on the water flow in a smaller area at a position close to the water inlet end 2001 of the jet water pipe 200, so that the water flow outside the spiral guide surface 201 can flow along the third arc transition surface 203 and the fourth arc transition surface 204 to the spiral guide surface 201 under the action of its own gravity; and as the speed of the water flow continues to increase, the water flow is increasingly susceptible to the action of centrifugal force and flows along the third arc transition surface 203 to the ventral arc surface 202. Therefore, by continuously increasing the area that the ventral arc surface 202 can act on the water flow, the faster water flow can flow along the ventral arc surface 202 and make a spiral motion.

[0051] Specifically, the abdominal arc surface 202 has a first side 2021, a second side 2022, a third side 2023, and a fourth side 2024. The first side 2021 is connected to the outer side of the spiral guide surface 201 via the third arc transition surface 203, the second side 2022 is connected to the outer wall of the toilet bowl 400 via the fourth arc transition surface 204, the third side 2023 is directly connected to the outer wall of the toilet bowl 400, and the fourth side 2024 is connected to the outer connecting surface 3 of the injection guide tube 100. The third arc transition surface 203 extends from the water inlet end 2001 to the water outlet end 2002 along a cylindrical spiral line parallel to the spiral guide surface 201 and is connected to the arc transition surface of the injection guide tube 100. The fourth arc transition surface 204 has a first end and a second end, the first end is connected to the water inlet end 2001 of the jet water pipe 200, and the second end is connected to the connection between the second side 2022 and the third side 2023. The arc length of the fourth arc transition surface 204 gradually decreases from its first end to the second end.

[0052] like Figure 8 and Figure 9 As shown, the water inlet end 2001 of the jet water conduit 200 is connected to the drain outlet 301 of the water tank 300 via a connecting pipe 302. The height of the water inlet end 2001 of the jet water conduit 200 is lower than the height of the drain outlet 301, while the height of the drain outlet 301 is higher than the height of the water cover 402 inside the toilet bowl 400. Furthermore, the flow cross-sectional area of ​​the connecting pipe 302 gradually decreases along the direction of water flow. The water outlet end 2002 of the jet water conduit 200 is connected to the jet outlet 401 of the toilet bowl 400 via the jet guide pipe 100, and the height of the water outlet end 2002 is no lower than the height of the jet outlet 401.

[0053] The magnitude of the rotational inertia and impulse generated by the spiral motion of water within the jet aqueduct 200 is closely related to the rotation angle of the generatrix and the height difference between the water inlet 2001 and the water outlet 2002 of the jet aqueduct 200. The greater the height difference and the greater the rotation angle, the greater the rotational inertia and impulse generated. However, since the water inlet 2001 of the jet aqueduct 200 must be lower than the drain outlet 301 of the water tank 300, and the water outlet 2002 of the jet aqueduct 200 cannot be lower than the jet outlet 401, and the installation space within the flush toilet is limited, the rotation angle of the generatrix is ​​limited. To fully elevate the height of the drain outlet 301 while ensuring smooth drainage, the drain outlet 301 is positioned on the side of the water tank 300. However, since the spiral guide surface 201 in the jet water conduit 200 requires a certain rotation angle, directly connecting the drain outlet 301 of the water tank 300 to the water inlet end 2001 of the jet guide pipe 100 via the jet water conduit 200 would result in an excessively large flush toilet. Therefore, the jet water conduit 200 is connected to the drain outlet 301 via a connecting pipe 302, facilitating a more rational layout of the jet water conduit 200. Furthermore, the cross-sectional area of ​​the connecting pipe 302 gradually decreases along the direction of water flow, allowing the pressurized water to enter the jet water conduit 200.

[0054] In this embodiment, the vertical distance (i.e., height difference) between the water inlet 2001 and the water outlet 2002 of the jet water conduit 200 is 50 mm to 65 mm, ensuring that the water has sufficient gravitational potential energy and, consequently, that the water velocity meets the requirements when it is discharged from the water outlet 2002. The rotation angle of the generatrix is ​​90 to 120 degrees, ensuring that the water generates sufficient rotational inertia and flows along the spiral guide surface 201.

[0055] Implementation Method 2

[0056] like Figure 8 and Figure 9 As shown, the present invention also provides a flush toilet, including a jet guide pipe 100. The structure, operating principle, and beneficial effects of the jet guide pipe 100 in this embodiment are the same as those of the jet guide pipe 100 in the first embodiment, and are not further described here. Specifically, the flush toilet also includes a toilet bowl 400, a water tank 300, a jet water pipe 200, and a siphon 500. The toilet bowl 400 is connected to the jet guide pipe 100 via a jet port 401, and the toilet bowl 400 is connected to the siphon 500 via a sewage outlet 403. The operating principle of the flush toilet is the same as that of the prior art, and is not further described here.

[0057] The above descriptions are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A spray guide tube, characterized in that: It has a water inlet and a water outlet, the water inlet is connected to the jet water pipe, the water outlet is connected to the jet outlet of the toilet bowl, and the jet guide pipe has a guide curved surface, which extends along the axial direction of the jet outlet to the jet outlet and is connected to the outer wall of the toilet bowl. The guide curved surface partially surrounds the jet outlet from below along the circumference of the jet outlet. The guide curved surface surrounds at least the lower half of the injection port; One end of the guide curved surface in the axial direction of the jet outlet is a first axial end, and one end of the guide curved surface in the circumferential direction of the jet outlet is a first side end. The jet water conduit further comprises a connecting curved surface, the connecting curved surface having a first side edge and a second side edge. The first side edge of the connecting curved surface is connected to the jet water conduit, and the second side edge of the connecting curved surface is connected to the first side end of the guide curved surface. The tangent direction of the connecting curved surface transitions from the first side edge to the second side edge from the water outlet direction of the jet water conduit to the axial direction of the jet outlet. The other end of the guide curved surface in the axial direction of the injection port is a second axial end. The injection guide pipe also has a connecting outer surface. The connecting outer surface is arranged along the extension direction of the injection water pipe. The connecting outer surface has a first side edge and a second side edge. The first side edge of the connecting outer surface is connected to the injection water pipe, and the second side edge of the connecting outer surface is connected to the connecting curved surface and the second axial end through a first arc transition surface.

2. The injection guide pipe according to claim 1, characterized in that: The diameter of the injection port is D, and the length of the guide curved surface extending along the axial direction of the injection port is L, which has the relationship: 1.5 D≤L≤2D.

3. The injection guide pipe according to claim 1, characterized in that: The distance between the guide curved surface and the inner wall surface of the injection port is 0 to 3 mm.

4. The injection guide pipe according to claim 1, characterized in that: The jet water pipe has a spiral guide surface inside. A busbar spirally moves around a vertical axis from the water inlet end to the water outlet end of the jet water pipe to form the spiral guide surface. The first side of the connecting curved surface is connected to the spiral guide surface.

5. The injection guide pipe according to claim 4, characterized in that: The jet water pipe also has a belly arc surface, which extends from the water inlet end of the jet water pipe to the water outlet end of the jet water pipe along a cylindrical spiral line parallel to the spiral guide surface, and the belly arc surface is located on the side of the spiral guide surface away from the vertical axis, the first side edge of the connecting outer surface is connected to the belly arc surface, and the connecting outer surface is an arc surface extending along the arc direction of the belly arc surface.

6. The injection guide pipe according to claim 5, characterized in that: The guide curved surface also has a second side end in the circumferential direction of the injection port, and the injection water conduit also has a connecting inclined surface. The connecting inclined surface extends along the tangent direction of the guide curved surface at the second side end. The connecting inclined surface has a first side edge and a second side edge. The first side edge of the connecting inclined surface is connected to the second side end, and the second side edge of the connecting inclined surface is connected to the connecting outer surface through a second circular arc transition surface.

7. A flush toilet, characterized in that: The invention comprises the injection guide tube according to any one of claims 1 to 6.

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