JP2019190791A - Indirect drain joint and device installation structure - Google Patents

Abstract

To provide an indirect drain joint which inhibits scattering of drain water from a device and drains the drain water to a drain pipe indirectly.SOLUTION: An indirect drain joint 100 includes: an inflow part 101 which is directly or indirectly connected to a device and includes an upstream side connection port into which drain water from the device flows; a peripheral wall part 103 which extends in an axial direction and forms a circulation space, through which the drain water flowing thereinto from the inflow part 101 passes, at its interior; a drain part 107 which has a downstream side connection port directly or indirectly connected to a drain pipe and drains the drain water that has passed through the peripheral wall part 103 to the drain pipe; and a bottom wall part 104 connecting the peripheral wall part 103 with the drain part 107. At the bottom wall part 104, one or multiple discharge ports 105 for flowing the drain water reversely flowing from the drain part are provided oriented to the downstream side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a joint for indirect drainage installed in a drainage path for indirectly draining drainage from equipment to a drain pipe, and an equipment installation structure including the joint for indirect drainage.

  For example, in a device such as a gas water heater having a latent heat recovery mechanism, drainage wastewater, which is condensed water derived from gas combustion, is generated by a mechanism that improves the thermal efficiency as compared with the related art. Such drain drainage is regulated so as to be indirectly drained to a predetermined drainage facility in consideration of adverse environmental effects. This indirect drainage is a method in which a drainage path is once opened to the atmosphere to prevent backflow of drainage due to sanitary problems, and then drained along a drainage path to a drainage facility. And various joints for indirect drainage are used in order to indirectly drain the drainage from the equipment into the drainage pipe.

  For example, Patent Document 1 discloses a joint for indirect drainage that suppresses scattering of drainage from equipment and indirectly drains to a drain pipe. Hereinafter, in the paragraph, reference numerals of Patent Document 1 are shown in parentheses. The joint for indirect drainage (100) includes an inflow part (101) into which drainage from the device (11) flows, a flowing water cylinder part (102) communicating with the inflow part (101), and the flowing water cylinder part (102). A peripheral wall portion (103) connected to the lower end of the inflow portion (101) and a receiving portion (106) connected to the lower end of the peripheral wall portion (103) for receiving the drainage discharged from the flowing water cylinder portion (102). ) And a drainage part (107) for communicating drainage to the drainage pipe (13) in communication with the receiving part (106). When the drain pipe (13) rises upstream through the discharge part (107), the receiving part (106) is filled with drainage and the drainage overflows from the receiving port (106a) through the opening (104). Get out. Moreover, the circumference | surroundings of the surrounding wall part (103) of the joint for indirect drainage (100) are covered with the mesh body (110). The mesh body (110) is formed of a stretchable and fine mesh sheet formed in a cylindrical shape, and is attached to the peripheral wall portion (103) in an expanded state. Thus, when the mesh body (110) closes the opening (104), the internal space and the external space of the joint for indirect drainage (100) are separated or separated across the mesh body (110). That is, insects and dust can be prevented from entering the drain outlet space (105) by the mesh body (110).

JP 2016-2111166 A

  In the joint for indirect drainage of Patent Document 1, since foreign matter can easily enter from the side opening of the joint for indirect drainage, in order to prevent such entry, a mesh body covering the opening is provided on the peripheral wall. Wearing. However, although the net-like body prevents the entry of foreign matter, it catches the foreign matter at the same time, so clogging is likely to occur. As a conventional problem, there is a possibility that an indirect drainage failure from the opening may occur due to this clogging, or maintenance such as frequent cleaning is required.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to avoid the occurrence of clogging and to prevent intrusion of foreign matter, and to install equipment using the indirect drainage joint. To provide a structure.

The joint for indirect drainage according to claim 1 is a joint for indirect drainage installed in a drainage path in order to indirectly drain the drainage from the equipment to the drainpipe.
An inflow portion that is connected directly or indirectly to the device, and has an upstream connection port through which wastewater from the device flows, and
A circumferential wall portion extending in the axial direction and forming a circulation space through which the waste water flowing in from the inflow portion passes,
A drainage portion that has a downstream connection port that is directly or indirectly connected to the drainage pipe, and drains the drainage that has passed through the peripheral wall portion to the drainage pipe;
A bottom wall portion connecting the peripheral wall portion and the drainage portion,
The bottom wall portion is provided with one or a plurality of discharge ports for flowing out the drainage that flows backward from the drainage portion, facing the downstream side.

  A joint for indirect drainage according to claim 2 is the joint for indirect drainage according to claim 1, further comprising a partition wall portion extending radially inward from the peripheral wall portion between the inflow portion and the drainage portion. The diaphragm portion is provided with a throttle port that opens radially inward of the one or more discharge ports.

  The joint for indirect drainage according to claim 3 is the joint for indirect drainage according to claim 2, wherein a confirmation window that allows the inside to be visually recognized from the side is formed on the upstream side of the partition wall portion of the peripheral wall portion. It is characterized by being.

  The joint for indirect drainage according to claim 4 is the joint for indirect drainage according to any one of claims 1 to 3, further comprising a top wall portion that connects the inflow portion and the peripheral wall portion. Features.

  The joint for indirect drainage according to claim 5 is the joint for indirect drainage according to claim 4, wherein the top wall portion is provided with one or a plurality of auxiliary connection ports.

The equipment installation structure according to claim 6 is an equipment installation structure for indirectly draining waste water from the equipment to a drain pipe,
A device having a drainage outlet;
The joint for indirect drainage according to any one of claims 1 to 5 connected to the discharge port of the device via an upstream connection port,
And a drain pipe connected to a downstream connection port of the joint for indirect drainage.

  According to the joint for indirect drainage of Claim 1, the bottom wall part which connects a surrounding wall part and a drainage part is provided with the 1 or several discharge port facing the downstream. When the drainage flowing backward from the drainage portion rises to the position of the bottom wall portion, the drainage flows out from one or a plurality of discharge ports, so that the rise of the drainage water level is effectively suppressed. In addition, since the discharge port is opened not to the side (substantially orthogonal to the flow direction) but to the downstream side, it is possible to remarkably suppress dust from entering the indirect drainage joint as compared with the conventional case. This makes it possible to omit installing a shield such as a mesh at the discharge port for indirect drainage. Moreover, even if a shielding object such as a net-like body is installed, the shielding object can be greatly prevented from being clogged with dust. Therefore, the joint for indirect drainage of the present invention can prevent the occurrence of clogging and suppress the entry of foreign matter.

  According to the joint for indirect drainage of the second aspect, in addition to the effect of the invention of the first aspect, the throttle port opens at the radially inner side than the one or the plurality of discharge ports in the partition wall portion. That is, since the partition wall portion extends so as to cover the discharge port from the upstream side in the circulation space, drainage flowing through the circulation space is prevented from flowing out of the discharge port by the partition wall portion. As a result, the drainage flowing out from the throttle port is reliably guided by the drainage section.

  According to the joint for indirect drainage of Claim 3, in addition to the effect of the invention of Claim 1 or 2, the joint for indirect drainage of the joint for indirect drainage is performed through the confirmation window formed on the upstream side of the partition wall portion of the peripheral wall. The inside can be seen from the side.

  According to the joint for indirect drainage according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the top wall portion that connects the inflow portion and the peripheral wall portion is provided. The diameter of the peripheral wall portion can be increased with respect to the inflow portion, and a larger-capacity circulation space can be secured.

  According to the joint for indirect drainage according to claim 5, in addition to the invention of claim 4, the top wall portion is provided with one or a plurality of auxiliary connection ports, so that the auxiliary connection port is provided alone. Or it can be used simultaneously with the inflow section to treat waste water from the equipment.

  In the apparatus installation structure of Claim 6, the effect of the invention in any one of Claim 1 to 5 can be exhibited as an apparatus installation structure. That is, the apparatus installation structure of the present invention can indirectly drain into the drainage pipe while avoiding clogging by the joint for indirect drainage and suppressing entry of foreign matter.

BRIEF DESCRIPTION OF THE DRAWINGS (a) The schematic perspective view seen from upper direction of the coupling for indirect drainage of one Embodiment which concerns on this invention, (b) The schematic perspective view seen from the downward direction. The (a) top view, (b) front view, and (c) bottom view of the joint for indirect drainage of FIG. AA sectional drawing of the joint for indirect drainage of FIG. BB sectional drawing of the joint for indirect drainage of FIG. CC sectional drawing of the joint for indirect drainage of FIG. DD sectional drawing of the joint for indirect drainage of FIG. The disassembled perspective view of the joint for indirect drainage of FIG. Schematic of the apparatus installation structure of one Embodiment of this invention. The partial exploded perspective view of the apparatus installation structure of FIG. The partial expanded sectional view of the apparatus installation structure of FIG. In the apparatus installation structure of FIG. 10, the schematic diagram which showed the form from which the waste_water | drain backflowed from the drain pipe was discharged | emitted from the joint for indirect drainage. In one Embodiment of this invention, the schematic sectional drawing of the apparatus installation structure where the joint for indirect drainage was connected to the apparatus which has a 2nd discharge port. In one Embodiment of this invention, the schematic sectional drawing of the apparatus installation structure where the joint for indirect drainage was connected to the apparatus which has a 3rd discharge port. (A) The schematic perspective view seen from the upper part of the joint for indirect drainage of another embodiment concerning the present invention, and (b) The schematic perspective view seen from the lower part. The longitudinal cross-sectional view of the joint for indirect drainage of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic diagram for explaining a suitable shape dimension, and a dimension ratio etc. do not necessarily correspond with an actual dimension ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

  The joint for indirect drainage 100 of this embodiment is connected directly or indirectly to the drain outlet 11a for drainage of the equipment 11 which is a latent heat recovery type gas water heater, and drainage generated from the equipment 11 is drained from the drain pipe 13. Used for indirect drainage.

  First, with reference to FIG. 1 thru | or FIG. 7, the structure of the joint 100 for indirect drainage of one Embodiment of this invention is demonstrated. FIGS. 1A and 1B are schematic perspective views of a joint 100 for indirect drainage. 2A to 2C are a plan view, a front view, and a bottom view of the joint for indirect drainage 100, respectively. 3 to 6 are an AA longitudinal sectional view, a BB longitudinal sectional view, a CC longitudinal sectional view, and a DD longitudinal sectional view of the joint for indirect drainage 100, respectively. FIG. 7 is an exploded perspective view of the joint 100 for indirect drainage.

  The joint for indirect drainage 100 of this embodiment is a hollow cylindrical body that extends in the axial direction from the upstream end to the downstream end. As shown in FIG. 1, the joint for indirect drainage 100 includes an inflow portion 101 formed at an upstream end, a drainage portion 107 formed at a downstream end, and extends radially outward from the inflow portion 101. A peripheral wall portion 103 that extends axially downstream from the outer peripheral end of the top wall portion 102, and a bottom wall portion 104 that extends radially inward from the lower end of the peripheral wall portion 103. The inflow portion 101, the top wall portion 102, the peripheral wall portion 103, the bottom wall portion 104, and the drainage portion 107 are arranged concentrically with each other in plan view.

  The inflow portion 101 is directly or indirectly connected to the discharge port 11a (11b) of the device 11 and is configured to flow in waste water from the device 11. And the inflow part 101 functions so that the waste_water | drain from the apparatus 11 may be introduce | transduced into the joint 100 for indirect drainage.

  The drainage unit 107 is connected directly or indirectly to the drainage pipe 13 and functions to discharge the drainage that has passed through the indirect drainage joint 100 through the inflow part 101 to the drainage pipe 13. The drainage part 107 is a cylindrical body extending in the axial direction, and has a receiving port 107a opened at the upper end thereof and a downstream side connection port 107b opened at the lower end thereof. The receiving port 107a is formed larger in diameter than the downstream connection port 107b so as to receive the drainage flowing through the peripheral wall portion 103 of the joint for indirect drainage 100. Further, the indirect drainage joint 100 can be connected to the drain pipe 13 through the downstream connection port 107b. Further, the drainage part 107 is formed of a double cylinder and can cope with different diameters of the drainage pipe 13.

  The top wall portion 102 extends in a substantially annular shape along a horizontal plane orthogonal to the axial direction so as to connect the inflow portion 101 and the upstream end portion of the peripheral wall portion 103. Two auxiliary connection portions 108 are integrally provided on the top wall portion 102. Each auxiliary connection portion 108 is disposed on the radially outer side of the inflow portion 101. As shown in FIG. 3, the auxiliary connecting portion 108 includes a substantially circular auxiliary connecting port 108 a formed in the top wall portion 102 and a cylindrical wall 108 b extending in the axial direction inside the peripheral wall portion 103. The cylindrical wall 108b extends to the vicinity of the partition wall 105 of the peripheral wall 103, and is opened at the lower end in the axial direction. Further, the cylindrical wall 108b is formed with a rectangular cutout 108c that opens toward the radial center on the downstream side. As will be described later, the auxiliary connection portion 108 is configured to be connected to the third discharge port 11c (see FIG. 13) of the device 11. Further, the auxiliary connecting portion 108 includes a lid 108d that is detachably attached to the top wall portion 102. The lid 108d is attached to the top wall 102 when the auxiliary connecting portion 108 is not used, and closes the auxiliary connecting port 108a, thereby preventing dust and insects from entering the inside.

  The peripheral wall portion 103 is formed in a cylindrical shape having a predetermined diameter and extending substantially linearly along the axial direction. The peripheral wall portion 103 communicates with the inflow portion 101 and forms therein a circulation space 103a through which drainage water flowing from the inflow portion 101 passes. Further, the peripheral wall portion 103 is configured to have a larger diameter than the inflow portion 101 and the drainage portion 107. As shown in FIGS. 3 to 5, the partition wall portion 105 protrudes from the inner peripheral surface of the peripheral wall portion 103. The partition wall portion 105 divides the circulation space 103a into two spaces on the upstream side and the downstream side in the axial direction. Further, two confirmation windows 103b are formed on the upstream side of the partition wall portion 105 of the peripheral wall portion 103 so that the circulation space 103a can be viewed from the side.

  The bottom wall portion 104 extends in a substantially annular shape along a horizontal plane orthogonal to the axial direction so as to connect the drainage portion 107 and the downstream end portion of the peripheral wall portion 103. That is, the bottom wall portion 104 supports the drainage portion 107 with respect to the peripheral wall portion 103. The bottom wall 104 is provided with a plurality of discharge ports 106 facing the downstream side in the axial direction. As shown in FIG. 4, each discharge port 106 is formed through the bottom wall portion 104 so as to extend from the vicinity of the inner peripheral surface of the peripheral wall portion 103 to the vicinity of the outer peripheral surface of the drainage portion 107. Further, as shown in FIG. 6, the plurality of discharge ports 106 are arranged at predetermined intervals around the radially outer side of the drainage portion 107. As will be described later, the plurality of discharge ports 106 function so that drainage that has flowed back from the drainage portion 107 to the circulation space 103 a flows out through the discharge ports 106. Therefore, it is preferable that the total area of the discharge port 106 occupying the bottom wall portion 104 is larger in order to secure the discharge amount of indirect drainage while ensuring the structural strength. More specifically, the total area of the discharge ports 106 occupying the bottom wall portion 104 is preferably about 75% to 95%.

  As shown in FIGS. 3 to 5, the partition wall portion 105 is an annular region extending radially inward between the inflow portion 101 and the drainage portion 107. At the center in the radial direction of the partition wall portion 105, a throttle port 105a that opens with a predetermined diameter is provided. The throttle port 105 a is formed radially inward from the plurality of discharge ports 106 around the drainage unit 107. Further, the throttle port 105 a is smaller than the opening diameter of the receiving port 107 a of the drainage unit 107. That is, in the bottom view (see FIG. 2C), the entire throttle port 105a is superposed on the drainage portion 107 (receiving port 107a). In other words, the partition wall 105 extends in an annular shape so as to separate the flow space 103 a upstream from the partition wall 105 and the discharge port 106 in the axial direction. In addition, a guide portion 105b is formed on the periphery of the throttle port 105a of the partition wall portion 105 as a region bent downstream. The guide part 105b works to guide the drainage that has flowed down on the partition part 105 to the throttle port 105a. Further, the throttle port 105 a of the partition wall part 105 is separated from the receiving port 107 a of the drainage part 107 and the upper surface of the bottom wall part 104 by a predetermined distance.

  In the present embodiment, the inflow portion 101 includes a connection mechanism 111 for connecting to the discharge ports 11 a and 11 b of different diameters of the device 11. As shown in FIGS. 2 and 3, the connection mechanism 111 includes an inner cylinder 112 that is opened upstream and downstream at the center in the radial direction, and an outer cylinder 113 that is formed on the radially outer side of the inner cylinder 112. And a connecting wall 114 that connects the inner peripheral surface of the outer cylinder 113 and the outer peripheral surface of the inner cylinder 112. Note that the connection mechanism 111 is formed integrally with the top wall portion 102.

  The inner cylinder 112 has a first diameter and extends in the axial direction, and protrudes upward in the axial direction from the outer cylinder 113. A first upstream connection port 112 a that opens in a substantially circular shape is provided at the upstream end of the inner cylinder 112. Further, on the outer surface of the inner cylinder 112, a screw portion (first connection portion) 112b that can be screwed to the discharge port 11a is formed. And the inner cylinder 112 is open | released downstream so that it may connect with the distribution space 103a inside the surrounding wall part 103. FIG. That is, the inner cylinder 112 is configured to introduce the drainage from the discharge port 11a into the circulation space 103a. Further, the inner cylinder 112 includes a cap-shaped first closing body 112b (see FIG. 13) that is detachably attached to the inner cylinder 112. The first closing body 112c is attached to the inner cylinder 112 when the first connection portion 112b (inflow portion 101) is not used, and closes the first upstream connection port 112a, so that dust, insects, and the like are inside. Prevent entry.

  The outer cylinder 113 has a second diameter larger than the first diameter of the inner cylinder 112 and extends in the axial direction so as to surround the inner cylinder 112 from the radially outer side. The outer cylinder 113 is integrally supported by the top wall portion 102. A second upstream connection port 113 a that opens annularly between the inner cylinder 112 and the outer cylinder 113 is provided at the upstream end of the outer cylinder 113. Further, on the outer surface of the outer cylinder 113, there is a smooth adhesive portion (second connecting portion) 113b that can be bonded to the second outlet 11b (see FIG. 12) having a larger diameter than the first outlet 11a. Is formed. That is, in the present embodiment, the first connection portion 112b or the second connection portion 113b is selected and used according to the diameter of the discharge port, but the inflow portion 101 (connection mechanism 111) and the drainage portion 107 are one-to-one. In any case, there is only one drainage portion 107 serving as an outlet for the drained wastewater regardless of which connection portion is used. In other words, in the present embodiment, the wastewater that has flowed in from the plurality of connection portions 112 b and 113 b is drained from the common drainage portion 107. Furthermore, the outer cylinder 113 includes a cap-shaped second closing body 113c that is detachably attached to the outer cylinder 113. The second closing body 113c is attached to the outer cylinder 113 when the second connection portion 113b is not used, and closes the second upstream connection port 113a, thereby preventing dust and insects from entering the inside. To do. A connecting wall 114 extends between the inner cylinder 112 and the outer cylinder 113 at the downstream end of the outer cylinder 113.

  The connecting wall 114 is an annular region that connects the outer peripheral surface of the inner cylinder 112 and the inner peripheral surface of the outer cylinder portion 113 in the radial direction. That is, the inner cylinder 112 is supported with respect to the outer cylinder 113 by the connecting wall 114. The connecting wall 114 has a plurality of flow ports 115 formed therein. Each circulation port 115 is a substantially circular through hole. The plurality of circulation ports 115 are arranged along the circumferential direction of the connecting wall 114 at substantially equal intervals. That is, the circulation port 115 is configured to allow waste water (fluid) flowing between the inner cylinder 112 and the outer cylinder 113 to pass downstream and to introduce it into the circulation space 103a. In order to improve the passage amount of the fluid while ensuring the structural strength, it is preferable that the total area of the circulation port 115 occupying the connecting portion 114 is larger. More specifically, the total area of the circulation port 115 occupying the connecting portion 114 is preferably about 75% to 95%.

  FIG. 7 is an exploded perspective view of the joint 100 for indirect drainage. As shown in FIG. 7, the joint for indirect drainage 100 is a combination of an upper member 100a including an inflow portion 101 and a top wall portion 102 and a lower member 100b including a peripheral wall portion 103, a bottom wall portion 104 and a drainage portion 107. Become. More specifically, the engaging claw 102a formed on the cylindrical wall extending downward from the outer periphery of the top wall portion 102 is fitted into the slit 103c formed in the peripheral wall portion 103, whereby the upper member 100a and the lower side The members 100b are fitted together. For example, the indirect drainage joint 100 can be disassembled by detaching the locking claw 102a from the slit 103c by pressing the locking claw 102a with a tool or the like for the purpose of maintenance or the like.

  Then, the structure of the apparatus installation structure 10 for indirectly draining the drain waste_water | drain from the apparatus 11 to the drain pipe 13 via the joint 100 for indirect drainage of this embodiment is demonstrated. FIG. 8 is an overall view schematically showing the device installation structure 10. FIG. 9 is an exploded perspective view of the device installation structure 10. FIG. 10 is a partial cross-sectional view of the device installation structure 10.

  The device installation structure 10 includes a device 11 that is typically a gas water heater, an indirect drainage joint 100 connected upstream to the device 11, and a drain pipe 13 connected downstream of the indirect drainage joint 100. It is equipped with. As shown in FIG. 8, in the apparatus installation structure 10, the apparatus 11 is being fixed to the wall surface of a building. A cylinder for discharging drainage water extends from the lower surface of the device 11 (see FIG. 9). As shown in FIG. 9 and FIG. 10, a joint 12 is screwed to the cylindrical body of the device 11, and an indirect drainage joint 100 is connected to the device 11 through the joint 12. That is, in the present embodiment, the joint 12 constitutes the discharge port 11a of the device 11. A drain pipe 13 is installed below the device 11. The drain pipe 13 is composed of a sub drain pipe extending vertically and horizontally below the device 11 and a main drain pipe extending vertically to drain water from the sub drain pipe into the drainage facility. That is, in the device installation structure 10, a drainage path is formed between the discharge port 11 a of the device 11 and the drain pipe 13 for indirectly draining drainage from upstream to downstream. In addition, in this invention, if the diameter of an upstream connection port, the diameter of an apparatus discharge port, and a connection type match, a joint may be abbreviate | omitted and the joint for indirect drainage may be directly connected to an apparatus. Moreover, in this invention, a coupling may be interpreted as a part of apparatus.

  More specifically, when the male threaded first connection portion 112b of the inner cylinder 112 of the joint for indirect drainage 100 is screwed into the female thread portion on the inner surface of the discharge port 11a (joint 12), the inflow portion 101 can flow in drainage. Are connected to the discharge port 11a of the device 11. On the other hand, the second upstream connection port 113a and the auxiliary connection port 108a are closed by the second closing body 113c and the lid body 108c. In addition, the discharge port 106 of the joint for indirect drainage 100 opens downward, and the drainage path is opened to the external space through the discharge port 106. Since the discharge port 106 faces downward, the risk that dust will enter the indirect drainage joint 100 from below is reduced. Note that the discharge port 106 may be covered with a net-like body in order to more reliably prevent insects from entering the inside. The indirect drainage joint 100 is connected to the drainage pipe 13 downstream thereof. More specifically, as shown in FIG. 10, the end of the drain pipe 13 is inserted into the downstream connection port 107 b extending below the drain section 107 and connected to each other with an adhesive or the like. Therefore, in this equipment installation structure 10, the drainage generated from the equipment 11 is indirectly drained to the drain pipe 13 (drainage facility) via the joint for indirect drainage 100.

  FIG. 10 shows a form in which the drainage from the device 11 is drained through the joint for indirect drainage 100. As shown in FIG. 10, when the drainage amount and momentum of the drainage water from the device 11 are strong, the wastewater may be sprayed and swell or scatter outward in the radial direction in the circulation space 103a. In the joint for indirect drainage 100 of this embodiment, the wastewater scattered radially outward hits the upper surface of the partition wall 105 and flows down downstream from the central throttle 105a. Further, the drainage accumulated in the upper half of the distribution space 103a is guided to the throttle port 105a by the guide portion 105a. At this time, since the wastewater hits the partition wall portion 105, the wastewater is led from the throttle port 105a to the drainage portion 107 while losing momentum. And since the partition part 105 has covered the some discharge port 106 from the axial direction upstream, it is prevented that waste_water | drain flows out from the discharge port 106 outside.

  FIG. 11 shows a form in which the waste water flowing backward from the drain pipe 13 is discharged from the discharge port 106 of the joint for indirect drainage 100 in the equipment installation structure 10. As shown in FIG. 11, when the drainage rises upstream via the drainage part 107 and the water level reaches the bottom wall part 104, the drainage flows out from the discharge port 106 downward. Note that the larger the total area of the plurality of discharge ports 106, the greater the amount of discharged waste water per hour. Further, since the throttle port 105a of the partition wall portion 105 is located upstream from the receiving port 107a of the drainage portion 107, the backflowed drainage is prevented from entering the upper side of the circulation space 103a through the throttle port 105a. Is done. Therefore, the joint 100 for indirect drainage of this embodiment can suppress the raise of the waste_water | drain which flows backward, and can discharge | emit effectively from the discharge outlet 106. FIG.

  FIG. 12 shows an outline of a device installation structure 10 ′ in which the inflow portion 101 of the joint for indirect drainage 100 is connected to a device having a second discharge port 11b having a second diameter larger than the diameter of the first discharge port 11a. It is sectional drawing. As shown in FIG. 12, the outer cylinder 113 of the joint for indirect drainage 100 is inserted into the discharge port 11b, and the smooth bonding portion 113b is bonded to the inner surface of the cylinder defining the second discharge port 11b with an adhesive or the like. Has been. At this time, the first upstream connection port 112a of the inner cylinder 112 is opened. When drainage is discharged from the discharge port 11b, the drainage flows into the inner cylinder 112 and the outer cylinder 113 via the first upstream connection port 112a and the second upstream connection port 113a, and the inner cylinder 112 And the downstream end of the outer cylinder 113 flows into the circulation space 103a. At this time, the waste water flowing between the inner cylinder 112 and the outer cylinder 113 passes through the circulation port 115 and flows into the circulation space 103a. That is, the flow port 115 can suppress a decrease in the inflow amount of the wastewater from the inflow portion 101. Further, it is possible to prevent the drainage from remaining in the region between the inner cylinder 112 and the outer cylinder 113.

  FIG. 13 is a schematic cross-sectional view of a device installation structure 10 ″ in which the inflow portion 101 of the joint for indirect drainage 100 is connected to a device having a third discharge port 11c having a third diameter. As shown in FIG. A cylinder that defines the third discharge port 11c is inserted into the auxiliary connection part 108 of the joint for indirect drainage 100, and the outer surface of the cylinder is bonded to the inner surface of the cylinder wall 108b with an adhesive or the like. The inner cylinder 112 and the outer cylinder 113 of the portion 101 are closed by the first closing body 112c and the second closing body 113c, and the other auxiliary connecting portion 108 is also closed by the lid body 108d. When the drainage is discharged from the outlet 11c, the drainage flows into the cylindrical wall 108b through the auxiliary connection port 108a, and flows into the distribution space 103a from the opening and notch 108c at the lower end of the cylindrical wall 108b. Part 10 The drainage that has flowed out of the pipe passes through the partition wall 105 and is guided to the throttle port 105a, and flows out to the drainage unit 107 through the throttle port 105a. In addition, both the inflow portion 101 and the auxiliary connection portion 108 may be connected to the discharge port of the device, and the third diameter is different from the first diameter or the second diameter. Or the same.

  Hereinafter, the effect in the joint 100 for indirect drainage of one Embodiment which concerns on this invention is demonstrated.

  According to the indirect drainage joint 100 of the present embodiment, the bottom wall portion 104 that connects the downstream end of the peripheral wall portion 103 and the drainage portion 107 is provided with a plurality of discharge ports 106 facing the downstream side. Yes. When the drainage flowing backward from the drainage part 107 rises to the height of the bottom wall part 104, the drainage flows out from the plurality of discharge ports 106, and the rise in the drainage water level is suppressed. And since the discharge port 106 is opened not to the side (substantially orthogonal to the flow direction) but to the downstream side, it is possible to remarkably suppress dust from entering the indirect drainage joint 100 as compared with the conventional case. It is done. That is, when the peripheral wall portion of the joint for indirect drainage is opened to the side as in the prior art, dust and dust are blown on the wind, and the mesh body is easily clogged. On the other hand, generally, dust and dust are rarely blown upward, so in the indirect drainage joint 100 of the present embodiment, the discharge port 106 is opened downward (downstream). is there. This makes it possible to omit the installation of a shield such as a mesh body at the outlet for indirect drainage, and even if a shield such as a mesh body is installed, Clogging is greatly suppressed. In addition, the throttle port 105 a opens in the partition wall portion 105 on the radially inner side than the discharge port 106. That is, since the partition wall 105 extends so as to cover the discharge port 106 from the upstream side in the circulation space 103 a, drainage flowing through the circulation space 103 a is prevented from flowing out of the discharge port 106 by the partition wall 105. As a result, the drainage flowing out from the throttle port 105 a is reliably guided by the drainage unit 107. On the other hand, when the drainage flows backward, the throttle port 105a is arranged to be separated from the drainage portion 107 on the upstream side, so that the backflowed drainage can be prevented from entering the upper portion of the circulation space 103a beyond the partition wall portion 105. . Therefore, the joint for indirect drainage 100 of this embodiment can perform indirect drainage more reliably and efficiently while avoiding the occurrence of clogging and suppressing entry of foreign matter.

[Modification]
The present invention is not limited to the above embodiment, and various embodiments and modifications can be taken. Hereinafter, a plurality of modifications of the present invention will be described. In each embodiment, components having the same last two digits have the same or similar features, and a part of the description is omitted.

(1) The joint for indirect drainage of this invention is not limited to the said form. For example, the joint for indirect drainage 200 of FIGS. 14 and 15 does not include a configuration corresponding to a top wall portion, a partition wall portion, and an auxiliary connection portion. That is, the joint for indirect drainage 200 is directly or indirectly connected to the device, and has an inflow portion 201 having an upstream connection port 201a through which drainage from the device flows, and extends in the axial direction from the inflow portion 201. It has a peripheral wall 203 that forms a circulation space 203a through which inflowing waste water passes, and a downstream connection port 207a that is directly or indirectly connected to the drain pipe, and drains the drain water that has passed through the peripheral wall 203 to the drain pipe. And a bottom wall portion 204 that connects the peripheral wall portion 203 and the drainage portion 207 to each other. The bottom wall portion 204 is inclined with respect to the axial direction (or horizontal direction). The bottom wall portion 204 is provided with a plurality of discharge ports 206 for the drainage of the backflow from the drainage portion 207 to face the downstream side. The discharge port 206 is a circular through hole. Furthermore, the joint for indirect drainage 200 includes a flowing water cylinder portion 205 that extends in a cylindrical shape along the axial direction on the radially inner side of the peripheral wall portion 203. The flowing water cylinder part 205 is close to the receiving port 207a of the drainage part 207 in the circulation space 203a, and the opening faces the center of the receiving port 207a. Thereby, the waste water flowing out from the flowing water cylinder portion 205 is stably guided to the drainage portion 207 without being scattered outside through the discharge port 206.

(2) The joint for indirect drainage 100 of this embodiment is used for the purpose of indirectly draining drain drainage of the equipment 11 that is a latent heat recovery type gas water heater to the drain pipe 13. However, the present invention is not limited only to the application of the present embodiment. For example, refrigerators, washing machines, dishwashers, drinkers, water coolers, sterilizers, sterilizers, air conditioning equipment, water pumps, etc. The joint for indirect drainage of the present invention may be used for other indirect drainage applications such as drainage pipes such as equipment and water supply tanks or overflow pipes.

(3) Although the joint for indirect drainage of the said embodiment is comprised by the cylindrical shape extended in an axial direction, this invention is not limited to this. For example, the joint for indirect drainage may have a polygonal cross section, an ellipse, or an oval shape as long as it can be indirectly or directly connected to the device and the drain pipe. Further, the shape of the discharge port can be arbitrarily determined. For example, a plurality of discharge ports may be formed irregularly, or one large discharge port may be formed on the bottom wall portion.

(4) Although each site | part is comprised linearly in the axial direction as for the joint for indirect drainage of the said embodiment, this invention is not limited to this. For example, it may be refracted or bent according to the position of the equipment or drain pipe to which the inflow part and the drain part are connected. Alternatively, the peripheral wall portion may be slightly bent or inclined as long as it is within the scope of the technical idea of the present invention.

(5) The joint for indirect drainage of this invention is not limited to the joint for indirect drainage 100 and the apparatus installation structure 01 of the said form. That is, the discharge port may be configured to be able to connect other joints and drain pipes. In this case, indirect drainage can be led to a position away from the device or the joint for indirect flat water (reverse flow) to drain the water. For example, the indirect drainage can be treated by drainage treatment means such as a gutter or a drain pipe, not directly under the equipment or the joint for indirect flat water.

(6) The present invention omits the mesh.

  The present invention is not limited to the above-described embodiments and modifications, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

10 equipment installation structure 11 equipment 11a discharge port (first discharge port)
11b Release port (second release port)
11c Release port (third release port)
12 Joint 13 Drainage pipe 100 Joint for indirect drainage 101 Inflow part 102 Top wall part 102a Locking claw 103 Peripheral wall part 103a Distribution space 103b Confirmation window 103c Slit 104 Bottom wall part 105 Bulkhead part 105a Restriction port 105b Guide part 106 Discharge port 107 Drainage Portion 107a Receiving Port 107b Downstream Connection Port 108 Auxiliary Connection Portion 108a Auxiliary Connection Port 108b Tube Wall 108c Notch 108d Lid 111 Connection Mechanism 112 Inner Tube 112a First Upstream Connection Port 112b First Connection Portion (Screw Portion)
112c 1st obstruction | occlusion body 113 Outer cylinder 113a 2nd upstream connection port 113b 2nd connection part (adhesion part)
113c 2nd obstruction | occlusion body 114 connection wall 115 through-flow port

Claims (6)

It is a joint for indirect drainage installed in the drainage route to indirectly drain the drainage from the equipment to the drainpipe,
An inflow portion that is connected directly or indirectly to the device, and has an upstream connection port through which wastewater from the device flows, and
A circumferential wall portion extending in the axial direction and forming a circulation space through which the waste water flowing in from the inflow portion passes,
A drainage portion that has a downstream connection port that is directly or indirectly connected to the drainage pipe, and drains the drainage that has passed through the peripheral wall portion to the drainage pipe;
A bottom wall portion connecting the peripheral wall portion and the drainage portion,
The indirect drainage joint, wherein the bottom wall portion is provided with one or a plurality of discharge ports for the drainage of the backflow from the drainage portion to face the downstream side.   The diaphragm further includes a partition wall portion extending radially inward from the peripheral wall portion between the inflow portion and the drainage portion, and the diaphragm opening at a radially inner side than the one or the plurality of discharge ports. The joint for indirect drainage according to claim 1, wherein a mouth is provided.   The joint for indirect drainage according to claim 2, wherein a confirmation window capable of visually recognizing the inside from the side is formed on the upstream side of the partition wall portion of the peripheral wall portion.   The joint for indirect drainage according to any one of claims 1 to 3, further comprising a top wall portion that connects the inflow portion and the peripheral wall portion.   The joint for indirect drainage according to claim 4, wherein the top wall portion is provided with one or more auxiliary connection ports. A device installation structure that drains wastewater from the device indirectly into a drain pipe,
A device having a drainage outlet;
The joint for indirect drainage according to any one of claims 1 to 5 connected to the discharge port of the device via an upstream connection port,
And a drain pipe connected to the downstream connection port of the joint for indirect drainage.

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