URINAL

Abstract

Provided in embodiments of the present disclosure is a urinal, comprising a urinal body. The urinal body comprises: a nozzle and a water inlet; and a flushing surface that comprises a front surface which is opposite to a person when in use. The urinal body is characterized in that the front surface of the flushing surface comprises a curved surface of steepest descent, the curved surface of steepest descent using the shape of a curve of steepest descent presented by a contour obtained by cross-cutting via a horizontal plane. The urinal in embodiments of the present disclosure has a large flushing area and a good anti-overflow effect, can be used under a working condition with relatively low water pressure, and consumes a small amount of flushing water a time, thereby saving water resources.

Claims

1. A urinal, comprising a urinal body, the urinal body comprising: a nozzle and a water inlet; a flushing surface comprising an opposite surface facing a person when in use; wherein the opposite surface of the flushing surface comprises a Brachistochrone Curve surface, and the Brachistochrone Curve surface has a Brachistochrone Curve shape outline obtained by transecting the Brachistochrone Curve surface with a horizontal plane.

2. The urinal according to claim 1, wherein a line connecting the water inlet and the nozzle on the flushing surface constitutes a centerline, and a point on the centerline is a point with the smallest curvature on the Brachistochrone Curve surface.

3. The urinal according to claim 2, wherein the Brachistochrone Curve surface is symmetric about the centerline.

4. The urinal according to claim 2, wherein the Brachistochrone Curve starts from a point on the centerline and extends toward two sides thereof in a horizontal direction.

5. The urinal according to claim 4, wherein the flushing surface further includes oblique side surfaces located on two sides of the opposite surface, being inclined planes, and having a circular arc transition with the Brachistochrone Curve surface.

6. The urinal according to claim 5, wherein the flushing surface further includes a water sealing surface located between the two oblique side surfaces, and having an outline including a Brachistochrone Curve shape and a circular arc shape and obtained by transecting the water sealing surface with a horizontal plane.

7. The urinal according to claim 6, wherein the Brachistochrone Curve surface, the oblique side surfaces and the water sealing surface form a cone with an inclined opening, and the lowest point of the inclined opening is located on the water sealing surface.

8. The urinal according to claim 6, wherein an intersection of the Brachistochrone Curve surface, the oblique side surfaces and the water sealing surface is a circular arc transition.

9. The urinal according to claim 1, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

10. The urinal according to claim 6, wherein the water sealing surface is funnel-shaped and suitable for preventing the flushing water from overflowing from the urinal body, an outline obtained by transecting the water sealing surface on a side of the urinal body is a first curve, the first curve includes a first point and a second point, the first point is an intersection point of the water sealing surface and the water inlet, and the second point is a sudden increase point of a curvature when extending along the first curve towards the highest point of the water sealing surface; a curvature of the first curve is minimum between the first point and the second point; a vertical distance between the first point and the second point is less than or equal to 10 mm.

11. The urinal according to claim 2, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

12. The urinal according to claim 3, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

13. The urinal according to claim 4, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

14. The urinal according to claim 5, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

15. The urinal according to claim 6, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

16. The urinal according to claim 7, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

17. The urinal according to claim 8, wherein a water pressure of a flushing water sprayed by the nozzle is less than 0.7 MPa.

18. The urinal according to claim 7, wherein the water sealing surface is funnel-shaped and suitable for preventing the flushing water from overflowing from the urinal body, an outline obtained by transecting the water sealing surface on a side of the urinal body is a first curve, the first curve includes a first point and a second point, the first point is an intersection point of the water sealing surface and the water inlet, and the second point is a sudden increase point of a curvature when extending along the first curve towards the highest point of the water sealing surface; a curvature of the first curve is minimum between the first point and the second point; and a vertical distance between the first point and the second point is less than or equal to 10 mm.

19. The urinal according to claim 8, wherein the water sealing surface is funnel-shaped and suitable for preventing the flushing water from overflowing from the urinal body, an outline obtained by transecting the water sealing surface on a side of the urinal body is a first curve, the first curve includes a first point and a second point, the first point is an intersection point of the water sealing surface and the water inlet, and the second point is a sudden increase point of a curvature when extending along the first curve towards the highest point of the water sealing surface; a curvature of the first curve is minimum between the first point and the second point; and a vertical distance between the first point and the second point is less than or equal to 10 mm.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features and advantages of the present disclosure will be better understood from the following detailed description of optional embodiments in conjunction with the accompanying drawings, in which like reference numerals refer to same or similar parts, in which:

[0021] FIG. 1 shows a schematic structural diagram of a conventional urinal with a gutter;

[0022] FIG. 2 shows a schematic front structural view of a urinal according to an embodiment of the present disclosure;

[0023] FIG. 3 shows a schematic top structural view of a urinal according to an embodiment of the present disclosure, in a cross-section at a nozzle;

[0024] FIG. 4 shows a schematic top structural view of a urinal according to an embodiment of the present disclosure, in a horizontal cross-section at a water sealing surface;

[0025] FIG. 5 shows a schematic side structural view of a urinal according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. In the drawings, same or similar reference numerals represent same or similar elements or elements with same or similar functions. Embodiments described below with reference to the drawings are exemplary, are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure.

[0027] Unless otherwise defined, technical or scientific terms used herein shall have their ordinary meanings understood by a person of ordinary skill in the art to which this disclosure belongs. In the description of the present disclosure, it should be understood that orientations or positional relationships indicated by terms center, longitudinal, lateral, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience and the simplification of describing the present disclosure. The description does not indicate or imply that a device or an element referred to must have a particular orientation, be constructed and operated in a particular orientation, and hence is not to be construed as a limitation on the disclosure.

[0028] In order to solve the problems of traditional urinals with large water consumption and poor visual effects, embodiments of the present disclosure provide a urinal with advantages of small water consumption and large flushing area. The urinal provided by embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0029] FIG. 1 shows a schematic structural diagram of a conventional urinal with a gutter. Referring to FIG. 1, a conventional urinal includes a urinal body 1, which includes a flushing surface 2, and two gutters 21 provided on the flushing surface 2. The function of the gutters 21 is to guide a flow direction of a flushing water to ensure a flushing effect. It is obvious that the gutters 21 have a visual sense of fragmentation.

[0030] FIG. 2 shows a schematic front structural view of a urinal according to an embodiment of the present disclosure. Referring to FIG. 2, a urinal provided by embodiments of the present disclosure includes a urinal body 1. The urinal body 1 includes: a nozzle 3, a water inlet 4 and a flushing surface 2. The flushing surface 2 includes an inner wall from the nozzle 3 to the water inlet. 4. The inner wall includes an opposite surface facing a person when in use. The opposite surface of the flushing surface 2 includes a Brachistochrone Curve surface 21, and an inner outline of a horizontal cross-section of the Brachistochrone Curve surface 21 has a Brachistochrone Curve shape.

[0031] FIG. 3 shows a schematic top structural view of a urinal according to an embodiment of the present disclosure, in a cross-section at a nozzle. Referring to FIG. 3, the flushing surface 2 also includes oblique side surfaces 22 located on two sides of the Brachistochrone Curve surface 21 of the flushing surface. The oblique side surfaces 22 are inclined planes. There is a circular arc transition between the Brachistochrone Curve surface 21 and the oblique side surfaces 22. A surface curvature at the circular arc transition is greater than a surface curvature of the Brachistochrone Curve surface 21.

[0032] FIG. 4 shows a schematic top structural view of a urinal according to an embodiment of the present disclosure, in a horizontal cross-section at a water sealing surface. Referring to FIG. 4, the flushing surface 2 (not shown) also includes a water sealing surface 23 located between the two oblique side surfaces 22. Using a horizontal plane to transect the water sealing surface 23, an obtained outline includes a Brachistochrone Curve shape 231 and a circular arc shape 232. The Brachistochrone Curve shape 231 is located on a side directly opposite a urinal user, and the circular arc shape 232 is located on a side close to the urinal user.

[0033] In some embodiments, the Brachistochrone Curve surface 21, the oblique side surfaces 22 and the water sealing surface 23 form a cone with an inclined opening, and the lowest point of the inclined opening is located on the water sealing surface 23.

[0034] In some embodiments, an intersection of the Brachistochrone Curve surface 21, the oblique side surfaces 22 and the water sealing surface 23 is a circular arc transition.

[0035] FIG. 5 shows a schematic side structural view of a urinal according to an embodiment of the present disclosure. Referring to FIG. 5, the water sealing surface 23 is in a shape of a funnel, and is suitable for preventing a flushing water from overflowing from the urinal body 1. The water sealing surface 23 is in a shape of an asymmetrical funnel. A side of the water sealing surface 23 close to a urinal user has a larger area than the other side.

[0036] Referring to FIG. 5, an outline obtained by transecting the water sealing surface 23 on a side of the urinal body 1 is a first curve, and the first curve includes a first point and a second point. The first point is the lowest point of the water sealing surface 23 and the lowest point of the inclined opening of the cone composed of the Brachistochrone Curved surface 21, the oblique side surfaces 22 and the water sealing surface 23. The second point is a sudden increase point of a curvature when extending along the first curve towards the highest point of the water sealing surface 23. A curvature of the first curve is minimum between the first point and the second point.

[0037] In some embodiments, a vertical distance ha between the first point and the second point is less than or equal to 10 mm.

[0038] Continuing to refer to FIG. 5, a vertical distance h.sub.2 between the lowest point and the highest point of the water sealing surface 23 is not less than 50 mm.

[0039] The Brachistochrone Curve surface 21 will be described in detail below with reference to FIGS. 2 and 3. Referring to FIGS. 2 and 3, a line connecting the water inlet 4 and the nozzle 3 on the flushing surface 2 constitutes a centerline 5. A point on the centerline 5 is a point with the smallest curvature, 0, on the Brachistochrone Curve surface. The Brachistochrone Curve surface 21 is symmetrical about the centerline 5.

[0040] Referring to FIGS. 2 and 3, taking a point on the centerline 5 as a starting point and extending horizontally to left and right sides along the Brachistochrone Curve surface 21, a Brachistochrone Curve is obtained. A starting point of the Brachistochrone Curve is a point on the centerline 5, and an ending point is a point where the Brachistochrone Curve at the same horizontal level intersects the oblique side surfaces 22. Plural Brachistochrone Curves form the Brachistochrone Curve surface 21. A horizontal range of the Brachistochrone Curve surface 21 includes the flushing surface between the two oblique side surfaces 22, and a vertical range includes the flushing surface from the nozzle 3 to the water inlet 4.

[0041] Referring to FIGS. 2 and 3, a position A of the nozzle 3 on the flushing surface 2 has the smallest curvature. Extending horizontally from the nozzle 3 toward two sides according to the Brachistochrone Curve to a curvature mutation position B, a horizontal distance between the position A and the position B is d.

[0042] A working principle of embodiments of the present disclosure is: the flushing problem of a urinal mainly depends on a design of a flushing surface, and an arc shape of the flushing surface is inspired by a Brachistochrone Curve surface. According to principles of mechanics, two tracks are placed on an inclined plane, one track is straight, the other track is curved, and both tracks have the same starting and ending heights. Two small balls of same masses and sizes fall downward from the starting point at the same time, the small ball on the curved track reaches the ending point first. Because the small ball on the curved track reaches the highest speed first, it arrives first. However, there is only one straight line between two points, there are countless curves. So, which curve is the fastest? In 1696, Swiss mathematician John Bernoulli solved this problem. A Brachistochrone Curve is a cycloid, also called a spinning wheel line. A ratio of the sine of an angle between a tangent and a plumb at any point to a square root of a falling height of that point s is a constant.

[0043] Since the Brachistochrone Curve surface has this unique property, that is, from a high point to a low point, a small ball takes the shortest time to move along the Brachistochrone Curve surface, and, since a height between a spray hole and a water inlet of a urinal is a constant value, if a water droplet replaces a small ball, it will be affected by gravity in a vertical direction, and a falling time is a constant value. At the same time, the water droplet will travel the longest distance on a cross section. Therefore, a purpose of maximizing a flushing area could be achieved. The sewage is discharged completely.

[0044] Referring to FIG. 2, a bottom width w of the flushing surface 2 is the bottom width of the Brachistochrone Curve surface 21, and the bottom width w of the flushing surface 2 is not less than 140 mm. A vertical distance from the nozzle 3 to the water inlet 4 is h.sub.1. A relationship between h.sub.1 and w is: h.sub.1>w.

[0045] In some embodiments, the nozzle 3 is adapted to spray a flushing water in a set direction to flush the flushing surface 2 of the urinal. Directions in which the nozzle 3 sprays the flushing water include at least two horizontal sides of the nozzle 3. A water pressure of the flushing water sprayed by the nozzle 3 is less than 0.7 MPa, and the urinal could be used in low-pressure working conditions and solve the problem of flushing in low-pressure working conditions. A water consumption of a single spray of the nozzle 3 is less than 0.5 L, smaller than a usual water consumption of 0.9 L to 3 L of convention urinals.

[0046] As a specific embodiment, the bottom width w of the flushing surface 2 of the urinal 1 is greater than 140 mm, and is selected to be 198 mm. The vertical distance from the nozzle 3 to the water inlet 4 is 446 mm, greater than 198 mm. A first curve is obtained by transecting the water sealing surface 23 on the side of the urinal body 1. A vertical distance h.sub.3 between the first point and the second point on the first curve is 7 mm. A vertical distance h.sub.2 between the lowest point and the highest point of the water sealing surface 23 is 50 mm, and the water sealing surface 23 could accommodate 2 L of the flushing water and has an excellent anti-overflow effect. Taking a horizontal cross-section of the urinal at the nozzle 3, two Brachistochrone Curves extending horizontally to the left and the right from the nozzle 3 are obtained. The nozzle 3 is located at a position A with the smallest curvature, and a position B has a sudden change in curvature on the Brachistochrone Curve. A horizontal distance d between the position A and the position B is 18 mm.

[0047] Compared with traditional urinals, a urinal provided by embodiments of the present disclosure uses less water when flushing a same area; and could flush a larger inner wall area of a urinal body with a same water consumption. Therefore, a urinal provided by embodiments of the present disclosure achieves flushing of a larger area with less water consumption by improving the flushing surface of the inner wall of the urinal body.

[0048] The above-described exemplary embodiments are only used to illustrate principles of the present disclosure and are not intended to limit the protection scope of the present disclosure. For those of ordinary skill in the art, various modifications and improvements could be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also within the protection scope of the present disclosure.