JP2008002217A - Drain trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain trap which can reduce noise in comparison with conventional noise even if abnormal noise is generated by sucking in air, because the loss and reduction of seal water are caused by a self-siphon operation. <P>SOLUTION: This drain trap comprises: a trap body 3 which has an inflow port 1 opened in an upper portion, a water storage portion 4 for storing water which is taken in, and an outflow port 2 for discharging the stored water to the outside; and a deodorizing pipe 7 which is suspended and inserted into the water storage portion 4 from at inflow port 1, and which forms a seal water depth 5 in cooperation with the water storage portion 4. A small hole 9 is formed in the deodorizing pipe 7 of a portion arranged in the water storage portion 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a drain trap for preventing odor from sewage and backflow of pests indoors.

As a well-known drain trap, for example, there is a drain trap illustrated in FIGS. 10 to 14. Hereinafter, a conventional example of the drain trap illustrated in FIGS. 10 to 14 will be described with reference to the drawings.
The drain trap of the conventional example illustrated in FIGS. 10 to 14 is attached to a bathtub in the bathroom described below.
The bathroom is composed of bathtub pans, washing pans, and bathtubs.
The bathtub pan is a pan on which the bathtub is placed, and is configured by opening a first drainage port for draining the drainage on the bathtub pan and the drainage of the bathtub at the bottom. The first drainage port is configured by connecting a receiving member called a drainage elbow that is tubular and bent in the lateral direction to the lower surface.
The washing place pan is a bread in a space where the user washes the body, and is configured by opening a second drainage outlet at the bottom for draining the drainage on the washing place pan. The bathtub pan and the washing pan are configured and installed in parallel. The second drain port is configured by connecting a drain trap, which will be described later, to the lower surface.
The bathtub is a tank body that opens a drain outlet for drainage at the bottom, and is placed on a bathtub pan. At this time, the drainage port of the bathtub is installed so as to be positioned near the first drainage port of the bathtub pan. From the drain outlet of the bathtub to the first drain outlet is connected via a cylindrical member.

The drainage trap of the conventional example illustrated in FIGS. 10 to 14 includes a trap body, an inlet, an outlet, a water reservoir, a deodorizing pipe, a sealing depth, a sealing line, and a branch pipe described below. And is attached to the bath tub described above.
The trap body is a box and is a member attached to the lower surface of the second drain port of the washing place pan. In addition, an inflow port, an outflow port, a water reservoir, a deodorizing pipe, a sealed water depth, a sealed water line, and a branch pipe, which will be described later, are provided. And the said trap main body is attached to the drain outlet of a 2nd drain outlet, and drains the waste_water | drain on a washing-room pan.
The inflow port is an opening through which drainage flows into the trap body, and is opened above the trap body.
The outflow port is an opening for allowing the waste water in the trap body to flow out to the outside, and is configured to be connected to a drain pipe.
The water reservoir is formed in an Owan shape in the trap body, and is configured so as to be able to always store the wastewater that has flowed into the interior from the inlet.
The deodorizing pipe is a cylindrical member that is detachably attached to the inflow port, and is arranged so that the lower part thereof hangs down and is inserted into the water reservoir.
The sealing water depth is a part having a sealing function in the water reservoir, and indicates a height from the upper end of the water reservoir to the lower end of the deodorizing pipe. By constantly storing water at the sealing depth, sewage-side odors and pests do not flow back into the room.
The sealing water line indicates the upper and lower horizontal lines where the sealing depth of the water reservoir is formed. In the said prior art example, from a water reservoir top surface to the lowest end of a deodorizing pipe is shown.
The branch pipe is a pipe body connected to the drain elbow connected to the first drain port, and is configured to protrude from the side surface of the trap body. Even if the branch pipe is connected to the drainage elbow, since the sealing depth on the drainage elbow side is provided, sewage side odors and pests do not flow back to the drainage elbow side.

The drainage trap configured as described above has the following drainage flow.
When drainage occurs on the bathtub, it is drained from the drain outlet of the bathtub to the first drain outlet of the bathtub pan and the drain elbow. The drainage in the drainage elbow flows into the branch pipe of the drainage trap and into the trap body. The drainage is discharged from the outlet through the sealed water depth in the water reservoir in the trap body, and finally drained to the sewer pipe. Moreover, even if drainage occurs on the bathtub pan, it is discharged from the first drainage port to the drainage elbow side, and drained into sewage through the branch pipe, trap body, water reservoir, sealing depth, and outlet.
And the waste_water | drain which generate | occur | produced on the washing-room pan is drained from the 2nd drain outlet of a washing-room pan to the inflow port in a trap main body. It passes through the inside of the deodorant pipe from the inflow port, and is drained from the outflow port through the water reservoir and the sealed water depth. Then, the water is finally discharged from the outlet to the sewer pipe.
In this way, the drainage on the wash basin pan and on the bathtub and bathtub pan is finally drained into the sewage through the drain trap.

JP 2003-064749 A JP 2001-241079 A Japanese Patent Laid-Open No. 2001-234568

The drainage trap as in the conventional example has the following problems.
As a problem existing in a normal drain trap, there is a problem of self-siphoning. This problem is caused by the amount of drainage flowing into the drainage elbow and drain trap when the water stored in the bathtub is drained at once, or when the user bathes in the bathtub and there is a large amount of overflow from the bathtub. The number of drainage pipes such as drain traps, branch pipes, and outlets will become full due to drainage. When the drain pipe becomes full, a phenomenon occurs in which the drainage is drawn downstream by negative pressure as shown in FIG. If it does so, the waste_water | drain of the water reservoir part in a drain trap will also be drawn in simultaneously downstream, and the sealing water of the water reservoir part in a trap main body will be lost (henceforth a self-siphon effect | action). When sealing water loss occurs and the sealing water at the sealing depth decreases from the lower end of the deodorizing pipe, a phenomenon occurs in which air on the inlet side is sucked into the sealing depth from the lower end of the deodorizing pipe. Moreover, since the suction of the air is drawn as a large air bubble from the lower end of the deodorizing pipe as shown in FIG. 14, a loud sound is generated as a gobo sound. When air is sucked into the trap body, the inflow opening is opened in the room, so that a sound “sloppy sound or gurgling sound” is generated inside the room. When such an abnormal noise is generated, it is very unpleasant noise for the user and the resident.

Therefore, the drain trap of the present invention solves the drain trap that can reduce the sound compared with the conventional sound even if the noise loss due to the self-siphoning occurs and the noise that sucks air is generated. Invented to do.

The present invention described in claim 1 includes a trap body 3 having an inlet 1 opened at the top, a water reservoir 4 for storing the taken-in water, and an outlet 2 for discharging the stored water to the outside. In a drain trap constructed of a deodorizing pipe 7 which is suspended from the inlet 1 into the water reservoir 4 and forms a sealing depth 5 in cooperation with the water reservoir 4, The drain trap is characterized in that a small hole 9 is opened in the deodorizing pipe 7.

The present invention described in claim 2 is characterized in that a flange portion 8 projecting inward is formed at the lower end of the deodorizing pipe 7 and the small hole 9 is opened in the flange portion 8. The drain trap according to paragraph 0008.

The present invention according to claim 3 is the drain trap as the drain trap according to paragraph 0008, wherein the small hole 9 is opened on a side surface of the deodorizing pipe 7.

The present invention described in claim 4 is the drain trap according to any one of paragraphs 0008 to 0010, wherein a plurality of the small holes 9 are opened.

The drainage trap of the present invention has the following effects.
Since the drain trap according to claim 1 has the small hole 9 opened in the portion of the deodorizing pipe 7 disposed in the water reservoir 4, the lower end of the deodorizing pipe 7 even if the self-siphoning action occurs and the air is sucked. Since the air is sucked from the small hole 9 of the deodorant pipe 7 before the air is directly sucked from the air, compared with the conventional direct suction sound from the lower end of the deodorant pipe 7, the amount of air sucked in at one time Since it decreases, the suction sound is reduced. Specifically, because the abnormal sound is not a “gobogobo sound” but a “copocopo sound”, even if an abnormal noise that entrains air occurs, the sound is loud like the “slurry gobogobo” sound as in the conventional example There is no such thing.
The drain trap according to claim 2 has a flange portion 8 projecting inwardly at the lower end of the deodorizing pipe 7 and a small hole 9 is opened in the flange portion 8. Even if the air is sucked in, the air is sucked from the small hole 9 of the deodorant pipe 7 before the air is sucked directly from the lower end of the deodorant pipe 7. Since the amount of air sucked in at a time is reduced compared to the sound, the suction sound is reduced. Specifically, because the abnormal sound is not a “gobogobo sound” but a “copocopo sound”, even if an abnormal noise that entrains air occurs, the sound is loud like the “slurry gobogobo” sound as in the conventional example There is no such thing.
Since the drain trap according to claim 3 has the small hole 9 opened in the side surface at a position below the sealing line 6 of the deodorizing pipe 7, even if the self-siphoning action occurs and the air is sucked, the deodorizing pipe 7 Since air is sucked from the small hole 9 of the deodorant pipe 7 before sucking air directly from the lower end, the amount of air sucked in at one time compared to the conventional direct suction sound from the lower end of the deodorant pipe 7 Therefore, the suction sound is reduced. Specifically, because the abnormal sound is not a “gobogobo sound” but a “copocopo sound”, even if an abnormal noise that entrains air occurs, the sound is loud like the “slurry gobogobo” sound as in the conventional example There is no such thing.
Since the drain trap according to claim 4 has a plurality of small holes 9, the air suction amount can be increased and the air suction area per small hole 9 is smaller than that of the conventional example. As a result, the air bubbles can be reduced as compared with the conventional example while the air suction amount is equal to that of the conventional example, so that the air suction sound can be reduced as compared with the conventional example.

A first embodiment of the present invention will be described below with reference to the drawings.
The drain trap of the present embodiment illustrated in FIGS. 1 to 3 is attached to a bathtub 10 described below.
The bathroom is composed of a bathtub pan 11, a washing pan 13, and a bathtub 10.
The bathtub pan 11 is a pan on which the bathtub 10 is placed, and is configured by opening a first drainage port 12 for draining the drainage on the bathtub pan 11 and the drainage of the bathtub 10 at the bottom. The first drain port 12 is configured by connecting a receiving member called a drain elbow 15 that is tubular and bent in the side surface direction to the lower surface.
The washing place pan 13 is a bread in a space where a user washes the body, and is configured by opening a second drainage port 14 for draining the drainage on the washing place pan 13 at the bottom. The bathtub pan 11 and the washing pan 13 are configured and installed in parallel. The second drain port 14 is configured by connecting a drain trap described later to the lower surface.
The bathtub 10 is a tank body that opens a drain outlet 16 for drainage at the bottom, and is placed on the bathtub pan 11. At this time, the drain port 16 of the bathtub 10 is installed so as to be positioned near the first drain port 12 of the bathtub pan 11. From the drain 16 of the bathtub 10 to the 1st drain 12 is connected via a cylindrical member.

The drain trap of the present embodiment illustrated in FIGS. 1 to 3 includes the trap body 3, the inlet 1, the outlet 2, the water reservoir 4, the deodorizing pipe 7, the sealing depth 5 described below, It is comprised from the sealing water line 6 and the branch pipe 18, and is attached to the bathtub 10 of an above described bathroom.
The trap body 3 is a box and is a member attached to the lower surface of the second drain port 14 of the washing place pan 13. In addition, it is comprised including the inflow port 1, the outflow port 2, the water reservoir part 4, the deodorizing pipe 7, the sealing water depth 5, the sealing water line 6, and the branch pipe 18 which are mentioned later. And the said trap main body 3 is attached to the 2nd drain outlet 14, and drains the waste_water | drain on the washing-room pan 13. FIG.
The inflow port 1 is an opening through which drainage flows into the trap body 3 and is opened above the trap body 3.
The outlet 2 is an opening for allowing the drainage in the trap body 3 to flow out to the outside, and is configured to be connected to the drainage pipe 17.
The water reservoir 4 is formed in an Owan shape in the trap body 3 and is configured so that the waste water flowing from the inlet 1 can be constantly stored therein.
The deodorizing pipe 7 is a cylindrical member configured to be detachable from the inflow port 1, and is arranged so that the lower part thereof hangs down and is inserted into the water reservoir 4. In the present embodiment, the lower end of the deodorizing pipe 7 is configured to protrude inwardly and downwardly, and the flange portion 8 is configured to project, and a plurality of small holes 9 are formed in the flange portion 8. .
The sealing water depth 5 is a portion having a sealing function in the water reservoir 4 and refers to the height from the upper surface of the water reservoir 4 to the height of the small hole 9 of the deodorizing pipe 7. Since water is always stored in the sealed water depth 5 and the deodorizing pipe 7 is inserted into the water reservoir 4, sewage-side odors and pests do not flow back indoors.
The sealing water line 6 indicates the upper and lower horizontal lines where the sealing depth 5 of the water reservoir 4 is formed. The height of the small hole 9 in the deodorizing pipe 7 is the height below the sealing line 6.
The branch pipe 18 is a pipe connected to the drain elbow 15 connected to the first drain port 12, and is configured to protrude from the side surface of the trap body 3. Even if the branch pipe 18 is connected to the drainage elbow 15, the sealed elbow 15 on the drainage elbow 15 side is provided, so that sewage-side odors and pests do not flow back to the drainage elbow 15 side.

The drainage trap configured as described above has the following drainage flow.
When drainage occurs on the bathtub 10, the drainage from the drainage port 16 of the bathtub 10 is drained from the first drainage port 12 of the bathtub pan 11 to the drainage elbow 15. The drainage in the drainage elbow 15 flows into the branch pipe 18 of the drainage trap and into the trap body 3. In the water reservoir 4 in the trap body 3, the water is discharged from the outlet 2 through the sealing depth 5 and finally drained to the sewer pipe. Further, even if drainage occurs on the bathtub pan 11, it is discharged from the first drainage port 12 to the drainage elbow 15, and passes through the branch pipe 18, the trap body 3, the water reservoir 4, the sealing depth 5, and the outlet 2. Drained into sewage.
Then, the wastewater generated on the washing place pan 13 is drained from the second drainage port 14 of the washing place pan 13 to the inlet 1 in the trap body 3. It passes through the inside of the deodorizing pipe 7 from the inflow port 1 and is drained from the outflow port 2 through the water reservoir 4 and the sealed water depth 5. And it drains from the outflow port 2 finally to a sewer pipe.
In this way, the waste water on the washing pan 13 and the bathtub 10 and the bathtub pan 11 is finally drained into the sewage through the drain trap.

Further, since the drain trap configured as described above has the following configuration, when the self-siphoning action occurs, a sealing loss of the sealing depth 5 of the water reservoir 4 occurs, and the air from the inlet 1 As shown in FIG. 3, first, air can be sucked from the small hole 9 opened in the deodorizing pipe 7 as shown in FIG. Since it comprised in this way, since the opening area for a suction | inhalation is small rather than sucking in air directly from the lower end of the deodorizing pipe 7 like before, the amount of inhalation of air decreases and noise is reduced. Further, specifically, since the suction of air can be changed from the conventional large air bubbles to the small air bubbles, the conventional “gobogobo sound” can be changed to “copocopo sound”.

A second embodiment of the present invention will be described below with reference to the drawings.
The drain trap of the present embodiment shown in FIGS. 4 to 6 is attached to a bathtub 10 described below.
The bathroom is composed of a bathtub pan 11, a washing pan 13, and a bathtub 10.
The bathtub pan 11 is a pan on which the bathtub 10 is placed, and is configured by opening a first drainage port 12 for draining the drainage on the bathtub pan 11 and the drainage of the bathtub 10 at the bottom. The first drain port 12 is configured by connecting a receiving member called a drain elbow 15 that is tubular and bent in the side surface direction to the lower surface.
The washing place pan 13 is a bread in a space where a user washes the body, and is configured by opening a second drainage port 14 for draining the drainage on the washing place pan 13 at the bottom. The bathtub pan 11 and the washing pan 13 are configured and installed in parallel. The second drain port 14 is configured by connecting a drain trap described later to the lower surface.
The bathtub 10 is a tank body that opens a drain outlet 16 for drainage at the bottom, and is placed on the bathtub pan 11. At this time, the drain port 16 of the bathtub 10 is installed so as to be positioned near the first drain port 12 of the bathtub pan 11. From the drain 16 of the bathtub 10 to the 1st drain 12 is connected via a cylindrical member.

The drain trap of the present embodiment illustrated in FIGS. 4 to 6 includes the trap body 3, the inlet 1, the outlet 2, the water reservoir 4, the deodorizing pipe 7, the sealing depth 5 described below, It is comprised from the sealing water line 6 and the branch pipe 18, and is attached to the bathtub 10 of an above described bathroom.
The trap body 3 is a box and is a member attached to the lower surface of the second drain port 14 of the washing place pan 13. In addition, it is comprised including the inflow port 1, the outflow port 2, the water reservoir part 4, the deodorizing pipe 7, the sealing water depth 5, the sealing water line 6, and the branch pipe 18 which are mentioned later. And the said trap main body 3 is attached to the 2nd drain outlet 14, and drains the waste_water | drain on the washing-room pan 13. FIG.
The inflow port 1 is an opening through which drainage flows into the trap body 3 and is opened above the trap body 3.
The outlet 2 is an opening for allowing the drainage in the trap body 3 to flow out to the outside, and is configured to be connected to the drainage pipe 17.
The water reservoir 4 is formed in an Owan shape in the trap body 3 and is configured so that the waste water flowing from the inlet 1 can be constantly stored therein.
The deodorizing pipe 7 is a cylindrical member configured to be detachable from the inflow port 1, and is arranged so that the lower part thereof hangs down and is inserted into the water reservoir 4. In the present embodiment, a flange portion 8 is formed at an intermediate position on the inner peripheral surface of the deodorizing pipe 7 and protrudes inward and is inclined downward, and a plurality of small holes 9 are formed in the flange portion 8. Open and configured.
The sealing water depth 5 is a portion having a sealing function in the water reservoir 4 and refers to the height from the upper surface of the water reservoir 4 to the height of the small hole 9 of the deodorizing pipe 7. Since water is always stored in the sealed water depth 5 and the deodorizing pipe 7 is inserted into the water reservoir 4, sewage-side odors and pests do not flow back indoors.
The sealing water line 6 indicates the upper and lower horizontal lines where the sealing depth 5 of the water reservoir 4 is formed. The lower end of the deodorizing pipe 7 is a height below the sealing water line 6.
The branch pipe 18 is a pipe connected to the drain elbow 15 connected to the first drain port 12, and is configured to protrude from the side surface of the trap body 3. Even if the branch pipe 18 is connected to the drainage elbow 15, the sealed elbow 15 on the drainage elbow 15 side is provided, so that sewage-side odors and pests do not flow back to the drainage elbow 15 side.

The drainage trap configured as described above has the following drainage flow.
When drainage occurs on the bathtub 10, the drainage from the drainage port 16 of the bathtub 10 is drained from the first drainage port 12 of the bathtub pan 11 to the drainage elbow 15. The drainage in the drainage elbow 15 flows into the branch pipe 18 of the drainage trap and into the trap body 3. In the water reservoir 4 in the trap body 3, the water is discharged from the outlet 2 through the sealing depth 5 and finally drained to the sewer pipe. Further, even if drainage occurs on the bathtub pan 11, it is discharged from the first drainage port 12 to the drainage elbow 15, and passes through the branch pipe 18, the trap body 3, the water reservoir 4, the sealing depth 5, and the outlet 2. Drained into sewage.
Then, the wastewater generated on the washing place pan 13 is drained from the second drainage port 14 of the washing place pan 13 to the inlet 1 in the trap body 3. It passes through the inside of the deodorizing pipe 7 from the inflow port 1, and is drained from the outflow port 2 through the water reservoir 4 and the sealing depth 5. And it drains from the outflow port 2 finally to a sewer pipe.
In this way, the waste water on the washing pan 13 and the bathtub 10 and the bathtub pan 11 is finally drained into the sewage through the drain trap.

Further, since the drain trap configured as described above has the following configuration, when the self-siphoning action occurs, a sealing loss of the sealing depth 5 of the water reservoir 4 occurs, and the air from the inlet 1 As shown in FIG. 6, first, air can be sucked from the small hole 9 opened in the deodorizing pipe 7 as shown in FIG. Since it comprised in this way, since the opening area for a suction | inhalation is small rather than sucking in air directly from the lower end of the deodorizing pipe 7 like before, the amount of inhalation of air decreases and noise is reduced. Further, specifically, since the suction of air can be changed from the conventional large air bubbles to the small air bubbles, the conventional “gobogobo sound” can be changed to “copocopo sound”.

A third embodiment of the present invention will be described below with reference to the drawings.
The drain trap of the present embodiment shown in FIGS. 7 to 9 is attached to a bathtub 10 described below.
The bathroom is composed of a bathtub pan 11, a washing pan 13, and a bathtub 10.
The bathtub pan 11 is a pan on which the bathtub 10 is placed, and is configured by opening a first drainage port 12 for draining the drainage on the bathtub pan 11 and the drainage of the bathtub 10 at the bottom. The first drain port 12 is configured by connecting a receiving member called a drain elbow 15 that is tubular and bent in the side surface direction to the lower surface.
The washing place pan 13 is a bread in a space where a user washes the body, and is configured by opening a second drainage port 14 for draining the drainage on the washing place pan 13 at the bottom. The bathtub pan 11 and the washing pan 13 are configured and installed in parallel. The second drain port 14 is configured by connecting a drain trap described later to the lower surface.
The bathtub 10 is a tank body that opens a drain outlet 16 for drainage at the bottom, and is placed on the bathtub pan 11. At this time, the drain port 16 of the bathtub 10 is installed so as to be positioned near the first drain port 12 of the bathtub pan 11. From the drain 16 of the bathtub 10 to the 1st drain 12 is connected via a cylindrical member.

The drain trap of the present embodiment illustrated in FIGS. 7 to 9 includes the trap body 3, the inlet 1, the outlet 2, the water reservoir 4, the deodorizing pipe 7, the sealing depth 5 described below, It is comprised from the sealing water line 6 and the branch pipe 18, and is attached to the bathtub 10 of an above described bathroom.
The trap body 3 is a box and is a member attached to the lower surface of the second drain port 14 of the washing place pan 13. In addition, it is comprised including the inflow port 1, the outflow port 2, the water reservoir part 4, the deodorizing pipe 7, the sealing water depth 5, the sealing water line 6, and the branch pipe 18 which are mentioned later. And the said trap main body 3 is attached to the 2nd drain outlet 14, and drains the waste_water | drain on the washing-room pan 13. FIG.
The inflow port 1 is an opening through which drainage flows into the trap body 3 and is opened above the trap body 3.
The outlet 2 is an opening for allowing the drainage in the trap body 3 to flow out to the outside, and is configured to be connected to the drainage pipe 17.
The water reservoir 4 is formed in an Owan shape in the trap body 3 and is configured so that the waste water flowing from the inlet 1 can be constantly stored therein.
The deodorizing pipe 7 is a cylindrical member configured to be detachable from the inflow port 1, and is arranged so that the lower part thereof hangs down and is inserted into the water reservoir 4. In this embodiment, a plurality of small holes 9 are opened on the side surface of the deodorizing pipe 7.
The sealed water depth 5 is a portion having a sealing function in the water reservoir 4, and indicates from the upper surface of the water reservoir 4 to the height of the small hole 9 of the deodorizing pipe 7. Since water is always stored in the sealed water depth 5 and the deodorizing pipe 7 is inserted into the water reservoir 4, sewage-side odors and pests do not flow back indoors.
The sealing water line 6 indicates the upper and lower horizontal lines where the sealing depth 5 of the water reservoir 4 is formed. The height of the small hole 9 in the deodorizing pipe 7 is the height below the sealing line 6.
The branch pipe 18 is a pipe connected to the drain elbow 15 connected to the first drain port 12, and is configured to protrude from the side surface of the trap body 3. Even if the branch pipe 18 is connected to the drainage elbow 15, the sealed elbow 15 on the drainage elbow 15 side is provided, so that sewage-side odors and pests do not flow back to the drainage elbow 15 side.

The drainage trap configured as described above has the following drainage flow.
When drainage occurs on the bathtub 10, the drainage from the drainage port 16 of the bathtub 10 is drained from the first drainage port 12 of the bathtub pan 11 to the drainage elbow 15. The drainage in the drainage elbow 15 flows into the branch pipe 18 of the drainage trap and into the trap body 3. In the water reservoir 4 in the trap body 3, the water is discharged from the outlet 2 through the sealing depth 5 and finally drained to the sewer pipe. Further, even if drainage occurs on the bathtub pan 11, it is discharged from the first drainage port 12 to the drainage elbow 15, and passes through the branch pipe 18, the trap body 3, the water reservoir 4, the sealing depth 5, and the outlet 2. Drained into sewage.
Then, the wastewater generated on the washing place pan 13 is drained from the second drainage port 14 of the washing place pan 13 to the inlet 1 in the trap body 3. It passes through the inside of the deodorizing pipe 7 from the inflow port 1 and is drained from the outflow port 2 through the water reservoir 4 and the sealed water depth 5. And it drains from the outflow port 2 finally to a sewer pipe.
In this way, the waste water on the washing pan 13 and the bathtub 10 and the bathtub pan 11 is finally drained into the sewage through the drain trap.

In addition, the drain trap configured as described above has the following configuration, and therefore, when a self-siphoning action occurs, a sealing water loss at the sealing depth 5 of the water reservoir 4 occurs and air flows from the inlet 1. As shown in FIG. 9, first, air can be sucked from the small hole 9 opened in the deodorizing pipe 7 as shown in FIG. 9. Since it comprised in this way, since the opening area for a suction | inhalation is small rather than sucking in air directly from the lower end of the deodorizing pipe 7 like before, the amount of inhalation of air decreases and noise is reduced. Further, specifically, since the suction of air can be changed from the conventional large air bubbles to the small air bubbles, the conventional “gobogobo sound” can be changed to “copocopo sound”.

In addition to the embodiments described above, the embodiments of the present invention can be modified as appropriate without departing from the scope of the claims.
In the embodiment described above, a plurality of openings of the small holes 9 of the deodorizing pipe 7 are configured. However, a simple opening shape may be used.
In the said Example, although the flange part 8 of the deodorizing pipe 7 was inclined and comprised downward, any angle may be used about an inclination angle.

It is sectional drawing which shows 1st Example of this invention. It is sectional drawing which shows the construction state of 1st Example of this invention. It is sectional drawing which shows the water-sealing condition at the time of the self-siphon generation | occurrence | production of 1st Example of this invention. It is sectional drawing which shows 2nd Example of this invention. It is sectional drawing which shows the construction state of 2nd Example of this invention. It is sectional drawing which shows the sealing condition at the time of the self-siphon generation | occurrence | production of 2nd Example of this invention. It is sectional drawing which shows 3rd Example of this invention. It is sectional drawing which shows the construction state of 3rd Example of this invention. It is sectional drawing which shows the water-sealing condition at the time of the self-siphon generation | occurrence | production of 3rd Example of this invention. It is sectional drawing which shows a prior art example. It is sectional drawing which shows a prior art example. It is sectional drawing which shows a prior art example. It is sectional drawing which shows a prior art example. It is sectional drawing which shows the sealing condition at the time of the self-siphon generation | occurrence | production of a prior art example.

Explanation of symbols

1 Inlet 2 Outlet 3 Trap Body 4 Water Reservoir 5 Sealing Depth 6 Sealing Line 7 Deodorant Pipe 8 Flange 9 Small Hole 10 Bathtub 11 Bath Pan 12 First Drain Port 13 Washing Pan 14 Second Drain Port 15 Drain Elbow 16 Drain Mouth 17 Drain pipe

Claims (4)

A trap body 3 having an inlet 1 opened at the top, a water reservoir 4 for storing the taken-in water, and an outlet 2 for discharging the stored water to the outside, and drooping from the inlet 1 into the water reservoir 4 In a drainage trap composed of a deodorizing pipe 7 inserted and forming a sealed depth 5 in cooperation with the water reservoir 4,
A drainage trap characterized in that a small hole 9 is opened in a portion of the deodorizing pipe 7 disposed in the water reservoir 4. The drain trap according to claim 1, wherein a flange portion 8 projecting inward is formed at a lower end of the deodorizing pipe 7, and the small hole 9 is opened in the flange portion 8. The drain trap according to claim 1, wherein the small hole (9) is opened on a side surface of the deodorizing pipe (7). The drain trap according to any one of claims 1 to 3, wherein a plurality of the small holes 9 are opened.

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