JP2006207190A - Building drainage system and instrument drain pipe unit used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage system disusing a special junction joint like a conventional drainage system, smoothly joining drain of a vertical drain pipe and instrument drain pipes, and moreover forming each pipe of a comparatively narrow pipe. <P>SOLUTION: This building drainage system comprises the vertical drain pipe 1; the instrument drain pipes 3; an instrument drain pipe unit 4 bundling a large number of bent pipes 5 with the tips hanging down near the vertical drain pipe, and having a confluence part at the tip part; and an injection port 7 formed in the vertical drain pipe and injecting drain along the internal wall of the vertical pipe. The respective instrument drain pipes are connected at their tips to the bent pipes without joining, and the instrument drain pipe unit is connected to the injection port. Drain from each of kitchen and sanitary instruments becomes a siphon stream in the instrument drain pipe and is perpendicularly changed in the speed component and injected along the internal wall of the vertical pipe from the injection port, and then joins the drain in the vertical drain pipe. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention mainly relates to a novel architectural drainage system (hereinafter simply referred to as a drainage system) in a high-rise building and an appliance drainage pipe unit used therefor.

  2. Description of the Related Art In recent years, a drainage system in a high-rise apartment or the like has been adopted in which drainage from each floor is joined to a drainage stand using a special joint for drainage from each floor. The drainage system is based on the drainage system proposed by Sovent in Switzerland, and its technology is to grade the large-diameter equipment drainage pipes on each floor and join the drainage pipes from the horizontal direction. . However, the sudden increase in the local filling rate caused by the drainage flow having a too slow vertical velocity generates a slag flow (pulsation flow), which leads to fluctuations in the pipe pressure due to an abnormal increase in ventilation resistance. For this reason, in order to overcome the phenomenon of reduced drainage capacity, a swirling flow is caused in the drainage by specializing the joint shape, and a horizontal section of the joint body diameter is expanded (equivalent to 3 to 4 times the vertical cross-sectional area). The joint capacity was increased and the drainage capacity was secured.

  The above-mentioned drainage system with special joints by Sovent Company adopts a single pipe type without venting vertical pipes, and devised the drainage vertical pipe joints at the confluence of each floor and developed it to meet the applicability to high-rise buildings. Has been done. However, in general, the instantaneous maximum flow rate of toilet drainage is large and there is also solid material transport, and the drainage pipe is 75A and the diameter is 100A. Accordingly, the drainage pipe diameter is 100A. It becomes about 150A. And even if the drainage vertical pipe diameter is 100A, the outer diameter of the body part of the joint is about 150 to 180 mm, which is equal to or larger than the outer diameter of the 150A pipe.

  Then, when the flow of the instrument drain pipe is merged from the lateral direction to the inner wall of the drainage vertical pipe, the drainage flow from the lateral direction collides with the opposite pipe wall across the cross section of the drainage vertical pipe, scatters and falls downward The system's minimum negative pressure, which tends to occur not only as a source of running noise, but also as a local resistance of the aeration flow that descends downward due to the frictional force of the drainage flow of the drainage pipe, and usually occurs just under the junction (Patent Document 1).

Japanese Patent Laid-Open No. 10-332066 (FIGS. 1 and 2)

  Furthermore, if the diameter of the drainage pipe that joins the drainage standpipe is large (same diameter or one size small diameter), when the drainage pipe flow and the standpipe flow collide, Because the drainage flow with extremely low vertical velocity covers the cross section in the drainage vertical pipe, it causes local resistance of the air flow that descends in the drainage vertical pipe. In addition, since this soul drops irregularly, “system minimum pressure fluctuation” develops just below the joint merging section, and when it exceeds 400 (Pa), the sealing water of other sanitary equipment groups breaks and the system goes down. It becomes.

  And although the joint made from cast iron is usually used, since there exists weight and is large, workability | operativity is generally not good. In the old days, cast iron pipes were also used as drainage pipes, but recently, for the same reason, a slightly lighter rigid PVC-lined steel pipe is often used. However, the structure and material are not suitable for the use or recycling of PVC.

  The present invention provides a drainage system in which the drainage of the drainage standpipe and the instrument drainage pipe is smoothly merged, and each pipe is constituted by a relatively thin pipe, and has a large body shape as in the prior art. And it aims at providing the new drainage system which does not use a heavy special junction joint, and the equipment drain pipe unit used for this system.

  The first gist of the present invention is to bundle a drainage vertical pipe penetrating up and down a high-rise building, an instrument drainage pipe from a watering device, and a number of bend pipes whose tips are suspended in the vicinity of the drainage vertical pipe. The instrument drain pipe unit is formed in the drainage vertical pipe and the injection port is formed along the inner wall of the vertical pipe, and each instrument drain pipe is connected to the bend pipe without joining. The drainage unit of the appliance is connected to the injection port, and the drainage from the watering device is a siphon flow in the appliance drainage pipe, and the velocity component is changed in the vertical direction in the appliance drainage pipe unit. In addition, the construction drainage system is characterized in that it is jetted along the inner wall of the vertical pipe from the injection port and then merged with the drainage in the vertical drainage pipe. Or a corrosion resistant metal tube, preferably jetted It may be provided with non-return mechanism connected to.

  A second gist of the present invention is an instrument drain pipe unit used in the first invention, a bend pipe that opens in a substantially horizontal direction and serves as a receiving port connected to the instrument drain pipe, and a vertical direction therefrom. A plurality of drooping pipes, and a plurality of drooping pipes are converged, a confluence pipe is connected to the tip of the drooping pipe, and the drainage flow from each drooping pipe is merged into one at the confluence pipe, and A device drainage pipe unit comprising a pipe line connected to the drainage vertical pipe from the junction pipe, wherein receptacles connected to the equipment drainage pipe are bundled or form one or more rows in the horizontal direction. Is a unit.

  According to the drainage system of the present invention, a relatively thin pipe can be adopted as the drainage pipe, and the equipment drainage pipe joining therewith can also be thin, and there is no inconvenience at the joining point, so that it can be used for high-rise buildings. Was able to provide a fully applicable system.

  And since the whole is comprised with a comparatively cheap member with few numbers, it was able to provide the outstanding drainage system that there are few construction steps and the skill level is not so required.

  Moreover, according to the instrument drain pipe unit of the present invention, the drainage from the instrument drain can be efficiently merged with the drain of the vertical pipe, and this instrument drain pipe unit can be assembled at the factory. There is a feature that adjustment at the construction site is not necessary.

  The present invention is as described above, and provides a novel drainage system without forcibly imparting a gradient to the instrument drain pipe and without using a special joint represented by a joint of Sovent. The first characteristic is that the instrument drain pipe from each instrument is a flexible instrument drain pipe having a small diameter without any gradient, and the drainage flow is made by siphon force. The second feature is that the instrument drain pipe is Before joining the drainage standpipe, each is led to the instrument drainage pipe unit bent 90 degrees downward, the drainage flow of the instrument drainage pipe is merged into one after changing the vertical velocity component, and finally It sprays downward along the inner wall of the drainage vertical pipe from the injection port provided on the pipe wall of the drainage vertical pipe. In this way, the drainage from the appliance drainage pipe is full, and a downward flow is formed along the inner wall of the drainage vertical pipe with a high vertical component speed. A smooth merging is achieved.

  Speaking of the first feature, in order to eliminate drainage leakage and clogging, the appliance drain pipes do not merge in the middle of the horizontal pipe, but merge into a single flow just before joining the vertical pipe. It is injected into the pipe. The instrument drain pipe is a flexible resin pipe or a corrosion-resistant metal pipe, and its workability is extremely efficient. Moreover, non-gradient piping is sufficient, and the ease of construction is incomparable to conventional piping with a gradient. Of course, it may be a pipe having a conventional gradient, and moreover, a pipe having a slight reverse gradient can be used.

  This type of merging is not a merging due to a slow vertical velocity component from the instrument drain pipe as in conventional drainage joints and special joint drainage systems, but the vertical component velocity of the instrument drain pipe flow is more than 100 times that of the conventional method. It will be merged as speed.

  The second feature will be further described. In the case where the conventional drainage pipe and the instrument drainage pipe are combined, the amount of drainage from the instrument drainage pipe is relatively small compared to the drainage amount in the vertical pipe. However, it became clear that the troubles at the time of merging became more prominent as the amount of drainage from the instrument drain pipe increased. That is, as described above, when the amount of drainage from the appliance drain pipe increases, the drainage does not immediately merge with the drainage in the vertical pipe, but reaches the inner surface of the vertical pipe facing across the vertical pipe.

  Therefore, a collision sound of the drainage from the appliance drainage pipe to the inner surface of the vertical pipe at the merging portion, a merging sound of the drainage from the equipment drainage pipe and the drainage from the vertical pipe, and further, the drainage from the appliance drainage pipe is raised An abnormal increase in the local water filling rate resulting from crossing the inside of the pipe occurred, and there was a problem due to the generation of negative pressure in the vertical pipe, which required improvement. That is, there arises a problem that it becomes impossible to secure a cross sectional area in the drainage pipe, which is essential for the extended top ventilation type drainage system.

  For this reason, the present invention brings about a change in the vertical velocity component of the drainage from the appliance drainage pipe, and the simultaneous drainage of the appliances is merged into a single flow, which is injected along the inner wall of the drainage standpipe. It merges with the upper drainage in the pipe. For this reason, the merging of both is smooth, and since the downward flow along the inner wall is jetted, the drainage flow is an annular flow that wraps around the inner wall of the pipe, resulting in the effect of cleaning the inner wall of the vertical pipe There is also an advantage that it becomes a drainage pipe with a high self-cleaning action.

  In the present invention, it is necessary to cause the velocity component of the drainage in the appliance drainage pipe to change in the vertical direction. This is because the second invention, that is, the bend pipe and / or the drooping pipe, is provided in the vicinity of the drainage vertical pipe. It is only necessary to bundle the instrument drain pipe unit and attach the instrument drain pipe to the instrument drain pipe unit, thereby generating the drain driving force of the instrument drain pipe. The bend pipe and the drooping pipe are metal pipes or resin pipes and are not particularly limited.

In the second instrument drainage tube unit of the present invention, the socket to be connected to the instrument drain pipe of the bent pipe may keep bundling all bent pipe, but place it in a horizontal direction to one or more columns It is also possible to keep it. Of course, the opening direction can be different. The appliance drain pipe connected to the receiving port is a non-gradient pipe, and the easiness of the construction is not comparable to a conventional pipe having a gradient. Of course, it may be a pipe having a conventional gradient, and moreover, a pipe having a slight reverse gradient can be used.

  In addition, it merges into a single flow just before merging into the drainage standpipe, but as for merging at that time, 6 to 7 watering devices are installed in one dwelling unit when there are many, but these are all used at the same time. There is little chance of statistical drainage from two instruments with a statistical probability of 99%. The pipe diameter of the merged pipe does not need to be large and is larger than that of the pipe diameter used in the past. The diameter can be reduced.

  In addition, it is necessary to provide a spray outlet in the drainage pipe, but it is also better to unitize it in advance, for example, a socket that covers the periphery of the drainage pipe and a socket that protrudes inward from the socket and slits downward It is preferable to constitute a junction joint unit that includes an injection port in which is formed and a connection port that protrudes outward from the socket continuously from the injection port. In addition, if a check mechanism is provided at the tip of the injection port, it is effective for preventing a backflow at the time of abnormality.

  The present invention is as described above, and as a result, the resource and development technology for special joints for drainage vertical pipes are not required, and a method for merging into drainage vertical pipes with a structure that does not cause an abnormal increase in local water filling rate, It is a completely new drainage mechanism and drainage system with controlled drainage flow. And even if it exists in joining to a drainage standpipe, the drainage system which does not need to use the drainage standpipe joint etc. which are special and heavy as shown, for example in patent document 2 was able to be provided.

JP 2003-227157 A

  Furthermore, in the conventional drainage system, the drainage joint is thick, large and heavy for the purpose of narrowing the drainage standpipe. In such a case, such a joint is not used, and the drainage system is constructed with only a drainage standpipe. Instead of using a large joint as in the conventional case, the diameter is the same as that of a conventional drainage standpipe. It is better to use a slightly thick drainage pipe. In terms of resources, this is lighter and cheaper than employing a large number of special joints, and can be said to be superior in terms of construction man-hours and the entire drainage system.

  Note that the siphon flow in the appliance drain pipe has been proposed by the applicant of the present patent and is not mentioned here (Patent Documents 3 and 4).

JP 2002-302977 A

JP 2003-201727 A

Hereinafter, the present invention will be described in more detail with reference to examples.
FIG. 1 is an overall view of a drainage system which is the first of the present invention. In the figure, reference numeral 1 denotes a drainage standpipe, and in this example, a standpipe made of a thin stainless steel plate having a pipe diameter of 125A. Reference numeral 2 denotes a watering device on each floor, and a device drain pipe 3 is connected to each device 2 independently. The appliance drain pipe 3 is a flexible resin pipe made of 20A polybutene. They are placed on the floor with no gradient and are not merged on the floor.

4 is an appliance drain pipe unit, which is formed by bundling L-shaped resin or stainless steel bend pipes 5 (for example, seven), and is usually formed as shown in FIG. The appliance drain pipe 3 described above is connected to the tip of the bend pipe 5 provided in the vicinity and located on the floor by any means. One end of the bend pipe 5 is connected to a drooping pipe 5a vertically by about 0.5 to 2.5 m. This vertical length gives the drainage flow a vertical velocity. It is preferable in terms of construction work that such drain pipe units 4 are bundled in advance to form one unit.

  On the other hand, the drainage stand 1 is provided with an injection port 7 facing downward, and the merging tube 6 and the injection port 7 are connected to discharge the wastewater in the appliance drainage tube 3 into the drainage standpipe 1. The injection port 7 is provided in a downward direction allowing a slightly oblique direction so that it does not collide with the drainage flow flowing down in the drainage stack 1 in a direction perpendicular to the drainage flow pipe 1. Preferably, it sprays so that it may flow down along the inner wall of the drainage standpipe 1, and the vertical speed is about 1 to 1.5 m / s. This is because the vertical velocity of the drainage flow from the appliance drainage pipe merges at a high speed 100 to 150 times the drainage flow of the conventional horizontal pipe, so there is no vertical section cross-section blockage and no local increase in the water filling rate. Such a flow of drainage travels along the inner wall of the drainage standpipe 1 and usually flows in an annular flow, and then smoothly joins the drainage flow in the drainage standpipe 1.

  FIG. 2 is a view of the joint 10 provided with the injection port 7 provided in the drainage stand 1 as viewed from the lower side of the drainage stand 1, and FIG. 3 is an exploded view thereof. The joint 10 is provided with a pair of sockets 11 and 12 surrounding the drainage stand 1 and a short pipe 13 on one side 11 thereof. A pipe 14 having a downward injection port 7 formed at the tip of the short pipe 13 is screwed, for example. The drainage flow descends as a vertical high-speed flow on the inner wall of the vertical pipe 1 and joins the drainage in the vertical drainage pipe 1. The other end 15 of the pipe 14 is connected to the junction pipe 6 described above. Although not shown, it is preferable to provide an arbitrary check mechanism at the injection port 7, for example, to prevent backflow of drainage in the drainage stand 1 or backflow of bubbles due to detergent or the like.

  By adopting such a joint 10, the work is performed simply by opening a hole in the drainage stand 1 so that the tip of the pipe 14 can be fitted, and the work is also more than in the case of a conventional special pipe joint. The work is completed easily. Moreover, the conventional joints sometimes lacked suitability at the time of reforming, but in the case of the present invention, the fitting of the joints to the drainage pipe 1 is simple, and the water circulation at the time of reforming is easy. It is easy to respond to changes and expansions in the arrangement of equipment.

  Speaking from the drainage stand side, argon welding or soldering joint processing is carried out in advance at the factory, and field welding or soldering assembly is performed, and the drainage standpipe becomes a simple drainage standpipe that penetrates each floor.

  FIG. 4 is a detailed view of the instrument drain pipe unit 4 of the second invention. In this example, seven bend pipes 5 are used, the head part 5a is directed in one direction (horizontal direction), and the drooping pipes 5b are bundled. The head 5a is a receiving part that opens in the horizontal direction and connects the appliance drain pipe. The material for bundling the bend pipe 5 is not particularly limited and will be omitted. Then, the junction pipe 6 is connected to the tip of the drooping pipe 5 b, and the drainage flows from the respective bend pipes 5 are joined together in the junction pipe 6. The junction pipe 6 is provided with a pipe line 5c connected to a drainage vertical pipe, and this pipe line 5c is connected to the injection port 7 to constitute the drainage system of the first invention. In addition, the length of the drooping pipe 5b is a factor that determines the velocity component of the drainage flow, and is usually about 1 to 2 m. Of course, the drooping pipe 5b may be integrated with the bend pipe 5.

  FIG. 5 is an example of the receiving port for connecting the instrument drain pipe of the bend pipe 5 of the instrument drain pipe of the second invention as seen from the front, and FIG. 5 (a) is an example in which the receptacle is bundled, FIG. 5 (b). Is an example arranged in one row, and FIG. 5C is an example arranged in two rows.

As mentioned above, the flow of drainage from the instrument drain pipe in the drainage system of the first invention will mainly be described. The siphon flow flows in from the head 5a of the bend pipe 5 of the instrument drain pipe unit 4, and the bend pipe 5 is fed into the bend pipe 5. The speed component is changed downward by the connected drooping pipe 5b, and the speed component is further changed at the injection port 7 to form a high-speed wall-surface annular flow, resulting in a low water filling rate that does not cross the cross section of the vertical pipe. It will contribute to the drainage capacity of the drainage pipe by minimizing the ventilation resistance and relaxing the system minimum pressure.

  The present invention is as described above. In addition to being applicable to ordinary apartment buildings and office buildings, the present invention is an excellent drainage system that can be used for drainage systems of skyscrapers that are currently being built or planned in large numbers. is there.

FIG. 1 is a conceptual diagram of a first drainage system of the present invention. FIG. 2 shows a joint constituting an injection port used in the drainage system of the present invention. FIG. 3 is an exploded view of the joint of FIG. FIG. 4 shows a second instrument drain pipe unit of the present invention. FIG. 5 is a front view of the receiving port of the second instrument drain pipe unit of the present invention.

Explanation of symbols

1. Drainage pipe,
2. Watering equipment,
3. Instrument drain pipe,
4. Instrument drain pipe unit,
5. Bend pipe,
5a ... head,
5b ... drooping tube,
5c ... pipeline,
6. Confluence pipe,
7. Jet port,
10 ... Fittings
11, 12 ... Socket,
13. Short tube,
14 ... pipe.

Claims (4)

  A drainage pipe unit that bundles a drainage pipe that penetrates a high-rise building up and down, an equipment drainage pipe from a watering device, and a number of bend pipes with the tip hanging down in the vicinity of the drainage pipe, and has a junction at the tip And an injection port that is formed in the drainage vertical pipe and injects along the inner wall of the vertical pipe. Each appliance drainage pipe is connected to the bend pipe without joining, and the appliance drainage pipe unit is jetted. The drainage from the watering device is made into a siphon flow in the device drainage pipe, the velocity component is changed in the vertical direction in the device drainage pipe unit, and the inner wall of the vertical pipe from the injection port The architectural drainage system is characterized in that it is sprayed along with the drainage and then merged with the drainage in the drainage pipe.   The building drainage system according to claim 1, further comprising a check mechanism connected to the injection port.   It is an appliance drain pipe unit used for the building drainage system according to claim 1, and is a bend pipe which becomes a receiving port which opens in a substantially horizontal direction and is connected to the appliance drain pipe, and a droop pipe extending in a vertical direction therefrom. The plurality of drooping pipes are converged, and a junction pipe is connected to the tip of the drooping pipe, and the drainage flows from the drooping pipes are merged into one at the junction pipe, and the drainage pipe is drained from the junction pipe. An appliance drain pipe unit comprising a pipe line connected to a vertical pipe.   The appliance drain pipe unit according to claim 3, wherein the receptacles connected to the appliance drain pipe form one or more rows in the horizontal direction.

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