JP4858416B2 - Drain trap - Google Patents

Description

  The present invention relates to a drain trap provided in a bathroom washroom, and more particularly to a drain trap configured to receive bathtub drainage and form a swirling flow in the trap.

  Japanese Patent No. 3886055 discloses a drain trap that is provided with an upper portion of a wash basin drain for receiving wash basin drainage and that accepts bathtub drainage from the side peripheral surface into the receiving chamber to form a swirling flow in the receiving chamber. Has been. A basket-like hair catcher with an open top is detachably attached to the washing ground drainage receiving port of the trap. This hair catcher hangs down near the axial center in the trap. When the bathtub drainage flows into the trap and the water level in the trap rises to form a swirling flow, the hair catcher is immersed in the swirling flow, and hair and other debris in the hair catcher collects at the center of the hair catcher. It is done. As a result, the garbage can be picked and thrown away. Further, the inner and outer surfaces of the hair catcher are immersed in the swirling flow to be purified, and slime and the like are removed.

In the drain trap of Japanese Patent No. 3886055, the receiving chamber is substantially cylindrical. The water forming the swirling flow in the receiving chamber is configured to flow out from the lower part of the peripheral wall of the receiving chamber to the side.
Japanese Patent No. 3886055

  In the swirl flow forming type drain trap, when the water level of the bathtub is low, the flow rate of the bathtub drain into the drain trap becomes small, the swirl flow rate becomes small, and the hair catcher may not be sufficiently washed.

  In the present invention, even when the drainage flow rate is low, the swirl flow swirl flow rate in the receiving chamber of the swirl flow forming type drain trap is increased, and thereby dust is efficiently collected at the center of the hair catcher, An object of the present invention is to provide a drain trap in which the purifying action of the hair catcher is enhanced.

The drain trap according to claim 1 has a receiving port (A) for washroom drainage at an upper portion thereof, and has a substantially cylindrical shape for receiving bathtub drainage from the bathtub drainage inlet (31) in a substantially tangential direction to form a swirling flow in the trap. of the receiving chamber (20) drain trap having a (10), in the center of the bottom of the receiving entrance (20), for discharging the water receiving entry (20) within said receiving entry of (20) a waste water trap provided with the outlet of smaller diameter than the inner diameter (23c), the diameter of the flow outlet (23c) is 20 to 80% of the inner diameter of said receiving chamber, said outlet (23c) A water guide chamber (40) for guiding water to the drain port (60) is provided on the lower side, and the water is guided from the water guide chamber (40) to the drain port (60) through the rise chamber (50). The drain port (60) is located on the side of the riser chamber (40). The level of the lower edge of the drain port (60) is a sealed surface (W), the sealed surface (W) is higher than the outlet (23c), and the sealed surface ( W) is higher than the bathtub drainage inlet (31) .

The drain trap according to claim 2 is the drain trap according to claim 1, wherein the lower portion of the receiving chamber (20) has a tapered surface whose diameter decreases toward the lower side, and bath drainage flows into the receiving chamber (20) on the tapered surface. The opening (32) for making it provide is characterized by the above-mentioned.

The drain trap according to claim 3 is the drain trap according to claim 2, wherein a lower inner peripheral surface of the receiving chamber (20) is constituted by an upper annular portion (23a), and an inner peripheral surface of the upper annular portion (23a) is the tapered surface. An annular water channel (30) that goes around the outer periphery of the upper annular part (23a) is provided, and the bathtub drainage from the bathtub drainage inlet (31) is opened from the annular water channel (30) to the opening. It flows into the said receiving chamber (20) through (32), It is characterized by the above-mentioned.

A drain trap according to claim 4 is characterized in that, in any one of claims 1 to 3, a hair catcher (17) is inserted into the upper part of the receiving chamber (20) from above. .

  The drainage trap of the present invention (Claim 1) is a swirling flow type drainage trap that receives washroom drainage and bathtub drainage, and has an outlet having a smaller diameter than the diameter of the receiving chamber at the center of the bottom of the receiving chamber. The water is made to flow out from the outlet.

  In the drain trap receiving chamber, the water is swirled by swirling. In the present invention, this vortex is guided to a small-diameter outlet at the center of the bottom of the receiving chamber. Since the diameter of the outlet is smaller than the inner diameter of the receiving chamber, the swirling flow velocity near the outlet is increased. As a result, even when the amount of wastewater flowing into the receiving chamber is small, the swirling flow velocity in the receiving chamber is sufficiently large.

Diameter of the flow outlet is 20 to 80% of the inner diameter of the receiving chamber.

In the drain trap of the present invention , when the bathtub drainage does not flow, the water is accumulated up to the level of the lower edge of the drainage port including the water guiding chamber, and the sealed water is formed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a front view of a drain trap, FIG. 2 is a plan view of the drain trap, FIG. 3 is a left side view of the drain trap, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2 is a sectional view taken along the line V-V in FIG. 2, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 1, FIG. 7 is a sectional view taken along the line VII-VII in FIG. It is a schematic perspective view of the bathroom provided with the drain trap which concerns.

  As shown in FIG. 8, a drainage tub 6 is integrally formed on the bathtub 3 side of the washing place pan 2. A drain trap 10 is connected to the drain 6 from below.

  As shown in FIG. 8, the inflow port 31 on the side surface of the drain trap 10 and the drain port 3 a on the bottom surface of the bathtub 3 are connected via a pipe 4.

  In addition, the upper surface of the drain trap 10 is provided with a wash basin drain inlet A (FIGS. 4 and 5) through which waste water from the washing basin 2 side flows through the drain 6. A drain pipe 7 is connected to the drain port 60 on the side surface substantially opposite to the inlet 31 of the drain trap 10.

  As shown in FIG. 4, the drainage basin 6 is formed in a concave shape integrally with the washing place pan 2. A drainage pan 8 (FIG. 8) is covered on the upper surface.

  A flange member 15 is attached to the bottom side of the drainage basin 6 via packing (not shown), and the upper end of the drainage trap 10 is attached to the flange member 15 by a screwing method. A hair catcher 17 is inserted into the drain trap 10 through the flange member 15 so as to be detachable from above. The hair catcher 17 has a basket shape with an open upper surface.

  In this embodiment, the hair catcher 17 has a substantially inverted truncated cone shape that decreases in diameter toward the lower side. The hair catcher 17 is supported by the flange member 15 so that the lower end thereof is positioned slightly above the sealing surface W in the drain trap 10. The hair catcher 17 is locked to the flange member 15 by a locking portion 15a so that the hair catcher 17 does not float up even when pushed upward by a swirling flow formed in the drain trap 10.

  Next, the configuration of the drain trap 10 will be described in detail.

  The drain trap 10 includes a receiving chamber 20, an annular water channel 30 that circulates in a lower portion of the receiving chamber 20, a water guiding chamber 40 below the receiving chamber 20, a rising chamber 50 that rises from the water guiding chamber 40, It is mainly composed of a drain outlet 60 that opens to the side surface of the rising chamber 50.

  The upper portion of the receiving chamber 20 is constituted by a cylindrical upper housing 21 whose vertical direction is the cylinder axis direction. A cylindrical lower housing 22 is coaxially connected to the lower side of the upper housing 21. An inner housing 23 as an outlet member is provided on the inner periphery of the lower housing 22. Inside the upper housing 21 and the inner housing 23 is a receiving chamber 20. An annular water channel 30 is formed between the lower housing 22 and the inner housing 23. A bottom surface portion 22b projects from the lower end of the lower housing 22 in the direction of diameter reduction.

  The inner housing 23 has an upper annular portion 23 a that faces the inner peripheral wall surface of the lower housing 22, and a substantially cylindrical throat portion 23 b that enters the water guide chamber 40. The upper annular portion 23a may be omitted. The inner peripheral surface of the inner housing 23 has a tapered shape that decreases in diameter toward the lower side, but is not limited thereto. The lower end of the throat portion 23b is an outlet 23c. The diameter of the outlet 23c is preferably 20 to 80%, particularly 30 to 60% of the maximum inner diameter of the receiving chamber 20 (in this embodiment, the inner diameter of the upper housing 21).

  As shown in FIG. 6, a tubular inflow port 31 is provided integrally with the lower housing 22 so as to be connected to the annular water channel 30 in the tangential direction. A plurality of openings 32 (two in this embodiment) are provided in the upper annular portion 23a of the inner housing 23 to communicate the inside of the annular water passage 30 with the interior of the receiving chamber 20. These openings 32 are long holes extending in the circumferential direction.

  The water guide chamber 40 is surrounded by a bottom housing 41 having an open container shape and a lid plate 42 covering the bottom housing 41. The bottom housing 41 and the lid plate 42 extend in a direction away from the throat portion 23 b of the inner housing 23. Openings 42 a and 42 b are respectively provided at one end side and the other end side in the longitudinal direction of the lid plate 42.

  A bottom surface portion 22b of the inner housing 22 overlaps with an upper edge portion of the opening 42a, and a throat portion 23b is inserted into the opening 42a from above.

  An outlet housing 51 is erected from the opening 42b, and the inside of the outlet housing 51 is a rising chamber 50. The rising chamber 50 communicates with the inside of the water guiding chamber 40 through the opening 42b. A drain port 60 is opened on the side surface of the upper portion of the outlet housing 51. The lower edge of the drain port 60 is a sealed surface W.

  In this embodiment, the inner housing 23 is formed by integrating the upper annular portion 23a and the throat portion 23b. However, the throat portion 23b is separated from the inner housing 23, and the lid plate 42 and It may be integrated.

  Next, the operation of the drain trap configured as described above will be described.

  When the drain plug of the drain port 3a of the bathtub 3 filled with water is pulled out, the water in the bathtub 3 flows into the annular water channel 30 of the drain trap 10 from the inlet 31 and flows into the receiving chamber 20 from the opening 32 while flowing in the swirling direction. Into the receiving chamber 20 to form a swirling swirl flow. The water level in the receiving chamber 20 gradually rises, and the hair catcher 17 or the drainage tub 6 is in a state of being submerged in the swirling flow. As a result, dust and hair adhering to the inner surface of the drainage basin 6 and the hair catcher 17 are scraped off, and the dust and hair are collected at the center of the vortex and fall downward from the center of the vortex. Good collection at the bottom center of the bottom.

  A part of the water swirling in the receiving chamber 20 flows out from the vicinity of the center of the vortex through the outlet 23c at the lower end of the throat portion 23b to the water guiding chamber 40. Thereafter, the water flows out from the drain outlet 60 through the rising chamber 50.

  As described above, the spiral swirl flow in the receiving chamber 20 flows out to the lower water guide chamber 40 through the small-diameter outlet 23c. In the vicinity of the outlet 23c, the swirl radius is smaller than the swirl radius in the receiving chamber 20, so the swirl flow velocity is large. As a result, the swirling flow in the receiving chamber 20 also becomes high speed accompanying the high swirling flow velocity in the vicinity of the outlet 23c. As a result, even when the water level of the bathtub 3 is low and the amount of inflow water from the inlet 31 is small, a strong swirling flow is formed in the receiving chamber 20 and the hair catcher 17 and the drainage tub 6 are sufficiently washed. Moreover, dust is efficiently collected at the center of the hair catcher 17.

  In particular, in this embodiment, since the inner peripheral surface of the inner housing 23 has a tapered shape that gradually decreases in diameter downward, the swirling flow in the lower portion in the receiving chamber 20 continues toward the outlet 23c. As the speed increases, the swirling flow velocity is efficiently increased. However, the inner housing 23 may not be tapered.

  When all the water flows out of the bathtub, the swirling flow stops and the sealed water at the level of the sealing surface W remains in the drain trap 10.

  Thereby, both the drain pipe 7 side and the washing place and the bathtub 3 side are isolated by the sealed water, and the odor of the drain pipe 7 is prevented from flowing back to the washing place and the bathtub 3.

  In this embodiment, since the cylindrical throat portion 23b having the outlet 23c at the lower end extends downward, the immersion length in the vertical direction of the throat portion 23b and the inner housing 23 is large. Even if water decreases, it is hard to run out of traps.

  The above-described embodiment is an example of the present invention, and the present invention can take other forms than shown. For example, the number of openings 32 may be one or three or more. Further, the upper housing, the lower housing, and the inner housing may all be integrated.

It is a front view of a drain trap. It is a top view of a drain trap. It is a left view of a drain trap. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. It is a perspective view of a bathroom provided with a drain trap according to an embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Bath 6 Drainage trap 10 Drain trap 17 Hair catcher 20 Receiving chamber 21 Upper housing 22 Lower housing 23 Inner housing 23a Upper annular body 23b Throat part 23c Outlet 30 Annular water channel 31 Inlet 32 Opening 40 Water guide chamber 41 Bottom housing 42 Lid plate 50 Standing room 60 Drain outlet

Claims (4)

It has a washing-room drainage receiving port (A) at the top and a substantially cylindrical receiving chamber (20) for receiving bathtub drainage from the bathtub drainage inlet (31) in a substantially tangential direction to form a swirling flow in the trap. In the drain trap (10) ,
In the center of the bottom of the receiving entrance (20), discharge provided for discharging the water receiving entry (20) within the outlet of smaller diameter than the inner diameter of the receiving entrance (20) and (23c) A water trap ,
The diameter of the outlet (23c) is 20 to 80% of the inner diameter of the receiving chamber, and the water guide chamber (40) for guiding water to the drain outlet (60) below the outlet (23c). Is provided,
Water is configured to be led from the water guiding chamber (40) to the drainage port (60) through the rising chamber (50),
The drain port (60) is provided on a side surface of the rising chamber (40),
The level of the lower edge of the drain port (60) is a sealed surface (W), the sealed surface (W) is higher than the outlet (23c), and the sealed surface (W) is the bathtub drainage. A drain trap characterized by being higher than the inflow port (31) . In Claim 1, The lower part of the said receiving chamber (20) becomes a taper surface which diameter reduces toward the downward direction, The opening (32) for making bathtub drainage flow in into this receiving chamber (20) on this taper surface A drainage trap characterized by being provided . In Claim 2, the lower inner peripheral surface of the receiving chamber (20) is constituted by an upper annular portion (23a), and the inner peripheral surface of the upper annular portion (23a) is the tapered surface,
An annular water channel (30) is provided around the outer periphery of the upper annular part (23a);
The drainage trap, wherein the bathtub drainage from the bathtub drainage inlet (31) flows into the receiving chamber (20) from the annular water channel (30) through the opening (32). The drainage trap according to any one of claims 1 to 3, wherein a hair catcher (17) is inserted into an upper part of the receiving chamber (20) from above.

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