JP6982540B2 - Connection member and connection mechanism - Google Patents

Description

The present invention relates to a connection member connected to a connection target and a connection mechanism for connecting to the connection target.

For example, in a device (connection target) such as a gas water heater having a latent heat recovery mechanism, drainage drainage, which is condensed water derived from gas combustion, is generated by a mechanism for improving thermal efficiency as compared with the conventional case. Such drainage drainage is regulated to be indirectly drained to a designated drainage facility in consideration of adverse effects on the environment. This indirect drainage is to open the drainage route to the atmosphere once to prevent the backflow of the drainage due to hygiene problems, and then drain the drainage to the drainage facility along the drainage route. Then, in order to indirectly drain the drainage from the device to the drain pipe, the indirect drainage joint, which is an example of the connecting member, is connected to the connection port of the device via various connecting means.

For example, Patent Document 1 discloses an indirect drainage joint that suppresses the scattering of drainage from an apparatus and indirectly drains water to a drainage pipe. Hereinafter, in the paragraph, the reference numerals of Patent Document 1 are shown in parentheses. The indirect drainage joint (100) includes an inflow portion (101) through which drainage from the discharge portion (11a) of the device (11) flows in, a water flow cylinder portion (102) communicating with the inflow portion (101), and the water pipe portion (102). A peripheral wall portion (103) that surrounds the flowing water cylinder portion (102) and is connected to the lower end of the inflow portion (101), and drainage that is connected to the lower end of the peripheral wall portion (103) and flows out from the flowing water cylinder portion (102). It is provided with a receiving portion (106) for receiving and a draining portion (107) for draining the drainage to the drain pipe (13), which communicates with the receiving portion (106). The indirect drainage joint (100) is connected to the discharge portion (11a) of the device (11) via the joint (12) screwed to the discharge portion (11a). That is, by fitting the connection portion (12a) of the joint (12) into the upstream connection 0 port (101a) of the indirect drainage joint (100), the inflow portion (101) can flow in the drainage device (11). ) Is connected to the discharge unit (11a).

Japanese Unexamined Patent Publication No. 2016-21166

The indirect drainage joint (hereinafter referred to as a connecting member) of Patent Document 1 has one fitting type connecting means. However, since the connection port of the connection target (including the joint) of the device or the like is configured with various diameters and connection types, it cannot be easily handled by one conventional connection means. Therefore, it is required to change the connection means of the connection member or prepare a joint suitable for the connection port according to the diameter and connection type of the connection port, which causes difficulty in the connection process. It is mentioned as.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a connection member and a connection mechanism that can be connected to connection ports having different diameters without reducing the inflow of fluid as much as possible. To provide.

The connecting member according to claim 1 is a connecting member connected to a connection port to be connected.
It is provided with an inflow section for the inflow of fluid from the connection port.
The inflow part
An inner cylinder that is open to the upstream and downstream sides and has a first connection portion that can be connected to a first connection port having a predetermined diameter.
An outer cylinder formed on the radial outer side of the inner cylinder and having a second connection portion that can be connected to a second connection port having a diameter larger than that of the first connection port.
A connecting wall for connecting the inner cylinder and the outer cylinder in the radial direction is provided.
The connecting wall is characterized in that a flow port through which a fluid flowing in between the inner cylinder and the outer cylinder passes downstream is formed.

The connecting member according to claim 2 is the connecting member according to claim 1, wherein the first connecting portion and the second connecting portion are made of different connecting means from each other.
The connection member according to claim 3 is the connection member according to claim 2, wherein a screw portion screwable to the first connection port is formed on the inner surface or the outer surface of the inner cylinder. The inner surface or the outer surface of the outer cylinder is characterized in that a smooth adhesive portion that can be adhered to the second connection port is formed.

The connecting member according to claim 4 has a downstream opening which is directly or indirectly connected to a drainage pipe downstream in the connecting member according to any one of claims 1 to 3. It is characterized by further including a drainage section for draining drainage from the connection port to the drainage pipe.

The connecting member according to claim 5 includes, in the connecting member according to claim 4, a peripheral wall portion extending in the axial direction and forming a circulation space inside through which a fluid flowing in from the inflowing portion passes.
A top wall portion connecting the inflow portion and the upstream end portion of the peripheral wall portion,
A bottom wall portion connecting the downstream end portion of the peripheral wall portion and the drainage portion is provided.
The bottom wall portion is characterized in that one or a plurality of openings for drainage of drainage flowing back from the drainage portion are provided facing the downstream side.

The connection member according to claim 6 is the connection member according to claim 5, wherein the top wall portion is provided with one or a plurality of auxiliary connection portions that can be connected to a third connection port. It is a feature.

The connection mechanism according to claim 7 is a connection mechanism for connecting to a connection port to be connected.
An inner cylinder that is open to the upstream and downstream sides and has a first connection portion that can be connected to a first connection port having a predetermined diameter.
An outer cylinder formed on the radial outer side of the inner cylinder and having a second connection portion that can be connected to a second connection port having a diameter larger than that of the first connection port.
A connecting wall for connecting the inner cylinder and the outer cylinder in the radial direction is provided.
The connecting wall is characterized in that a flow port through which a fluid flowing in between the inner cylinder and the outer cylinder passes downstream is formed.

According to the connecting member according to claim 1, an inner cylinder having a first connecting portion and an outer cylinder having a second connecting portion are radially supported or connected by a connecting wall, and the outer cylinder is attached to the connecting wall. A flow port is formed between the inner cylinder and the inner cylinder to allow the flowing fluid to pass downstream. That is, the connecting member can be connected to any of the first and second connecting ports having different diameters, selectively via either the first connecting portion or the second connecting portion. Further, when the second connection portion is connected to the second connection port, the fluid from the second connection port passes through the distribution port in addition to the inner cylinder, so that the amount of inflow to the downstream of the connection member is increased. The decrease can be effectively suppressed. That is, the connecting member of the present invention can be connected to a connecting port having a different diameter without reducing the inflow amount of the fluid as much as possible.

According to the connection member according to claim 2, in addition to the effect of the invention of claim 1, the first connection portion and the second connection portion are made of different connection means from each other, so that a plurality of connection ports to be connected are connected. It is possible to support the connection format.
According to the third aspect of the present invention, in addition to the effect of the invention of the second aspect, the first connection portion can be connected to the first screw-on connection port, and the second adhesive type can be connected. The second connection part can be connected to the discharge part of the above.

According to the connecting member according to claim 4, in addition to the effect of the invention according to any one of claims 1 to 3, the connecting member indirectly connects the connection target and the drain pipe and drains water from the connection port. Can be drained into the drain pipe.

According to the connection member according to claim 5, in addition to the invention of claim 4, one or a plurality of discharge ports are located on the downstream side of the bottom wall portion connecting the downstream end portion of the peripheral wall portion and the drainage portion. It is provided facing. Since the discharge port is opened toward the downstream side instead of the side (which is substantially orthogonal to the distribution direction), dust and insects are significantly suppressed from entering the inside of the indirect drainage joint as compared with the conventional case.

According to the connecting member according to claim 6, in addition to the invention of claim 5, the apical wall portion is provided with one or a plurality of auxiliary connecting portions, so that the auxiliary connecting portions can be used alone or inflow. It can be used at the same time as the unit to treat wastewater from the equipment.

According to the connection mechanism according to claim 7, the inner cylinder having the first connection portion and the outer cylinder having the second connection portion are radially supported or connected by the connecting wall, and the outer cylinder is attached to the connecting wall. A flow port is formed between the inner cylinder and the inner cylinder to allow the flowing fluid to pass downstream. That is, the connection mechanism can selectively connect to any of the first and second connection ports having different diameters via either the first connection portion or the second connection portion. Further, when the second connection portion is connected to the second connection port, the fluid from the second connection port passes through the distribution port in addition to the inner cylinder, so that the amount of inflow to the downstream of the connection member is increased. The decrease can be effectively suppressed. That is, the connection mechanism of the present invention can be connected to connection ports having different diameters without reducing the inflow amount of the fluid as much as possible.

(A) A schematic perspective view seen from above and (b) a schematic perspective view seen from below of the joint for indirect drainage according to the present invention. (A) plan view, (b) front view and (c) bottom view of the indirect drainage joint of FIG. FIG. 2 is a sectional view taken along the line AA of the joint for indirect drainage of FIG. BB sectional view of the joint for indirect drainage of FIG. FIG. 2 is a sectional view taken along the line CC of the indirect drainage joint of FIG. The DD sectional view of the joint for indirect drainage of FIG. The exploded perspective view of the joint for indirect drainage of FIG. The schematic diagram of the equipment installation structure of one Embodiment of this invention. FIG. 8 is a partially exploded perspective view of the equipment installation structure of FIG. FIG. 8 is a partially enlarged cross-sectional view of the equipment installation structure of FIG. In the equipment installation structure of FIG. 10, a schematic diagram showing a form in which drainage flowing back from a drainage pipe is discharged from an indirect drainage joint. In one embodiment of the present invention, a schematic cross-sectional view of a device installation structure in which an indirect drainage joint is connected to a device having a second connection port. In one embodiment of the present invention, a schematic cross-sectional view of a device installation structure in which an indirect drainage joint is connected to a device having a third connection port. Sectional drawing of the joint for indirect drainage of another embodiment which concerns on this invention. (A) plan view and (b) EE sectional view of the joint for indirect drainage of another embodiment according to the present invention. (A) Bottom view and (b) FF sectional view of the joint for indirect drainage according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present specification, the connection member of the present invention is exemplified as an indirect drainage joint, and the connection target and the connection port are exemplified as a device which is a latent heat recovery type gas water heater and a discharge port thereof. .. It goes without saying that these explanations are not intended to limit the uses of the present invention. It should be noted that the shape of each figure referred to in the following description is a conceptual diagram or a schematic diagram for explaining suitable shape dimensions, and the dimensional ratio and the like do not always match the actual dimensional ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

The indirect drainage joint (connecting member) 100 of the present embodiment is directly or indirectly connected to the first or second connection port 11a, 11b for drainage drainage of the device 11 which is a latent heat recovery type gas water heater. , It is used to indirectly drain the drain drainage (fluid) generated from the device 11 to the drain pipe 13.

First, the configuration of the indirect drainage joint 100 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 7. 1 (a) and 1 (b) are schematic perspective views of an indirect drainage joint 100. 2 (a) to 2 (c) are a plan view, a front view, and a bottom view of the indirect drainage joint 100. 3 to 6 are AA vertical sectional views, BB vertical sectional views, CC vertical sectional views, and DD vertical sectional views of the indirect drainage joint 100. FIG. 7 is an exploded perspective view of the indirect drainage joint 100.

The indirect drainage joint 100 of the present embodiment is a hollow cylindrical body extending in the axial direction from the upstream end to the downstream end. As shown in FIG. 1, the indirect drainage joint 100 extends radially outward from the inflow portion 101 formed at the upstream end portion, the drainage portion 107 formed at the downstream end portion, and the inflow portion 101. A top wall portion 102 is provided, a peripheral wall portion 103 extending axially downstream from the outer peripheral end of the top wall portion 102, and a bottom wall portion 104 extending 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 a plan view.

The inflow section 101 is directly or indirectly connected to the connection port 11a (11b) of the device 11 and is configured to flow in the drainage from the device 11. Then, the inflow portion 101 functions to introduce the drainage from the device 11 into the inside of the indirect drainage joint 100.

The drainage section 107 is directly or indirectly connected to the drainage pipe 13 and functions to discharge the drainage that has passed through the inside of the indirect drainage joint 100 via the inflow section 101 to the drainage pipe 13. The drainage portion 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 opening 107b opened at the lower end thereof. The receiving port 107a is formed to have a diameter larger than that of the downstream opening 107b so as to receive the drainage flowing inside the peripheral wall portion 103 of the indirect drainage joint 100. Further, the indirect drainage joint 100 may be connected to the drainage pipe 13 via the downstream opening 107b. Further, the drainage portion 107 is formed of a double cylinder, and can correspond to different diameters of the drainage pipe 13.

The top wall portion 102 extends substantially in an 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. The top wall portion 102 is integrally provided with two auxiliary connection portions 108. Each auxiliary connection portion 108 is arranged radially outside the inflow portion 101. As shown in FIG. 3, the auxiliary connection portion 108 includes a substantially circular auxiliary opening 108a formed in the top wall portion 102 and a tubular wall 108b extending axially inside the peripheral wall portion 103. The tubular wall 108b extends to the vicinity of the partition wall portion 105 of the peripheral wall portion 103, and is open at the lower end in the axial direction. Further, the tubular wall 108b is formed with a rectangular notch 108c that opens toward the radial center on the downstream side thereof. As will be described later, the auxiliary connection unit 108 is configured to be connected to the third connection port 11c (see FIG. 13) of the device 11. Further, the auxiliary connection portion 108 includes a lid body 108d that is detachably attached to the top wall portion 102. The lid 108d is attached to the top wall portion 102 when the auxiliary connection portion 108 is not used, and closes the auxiliary opening 108a to prevent dust, insects, and the like from entering the inside.

The peripheral wall portion 103 is formed in a cylindrical shape that extends substantially linearly along the axial direction with a predetermined diameter. The peripheral wall portion 103 internally forms a distribution space 103a that communicates with the inflow portion 101 and allows the drainage that has flowed in from the inflow portion 101 to pass through. 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 projects from the inner peripheral surface of the peripheral wall portion 103. The partition wall portion 105 divides the distribution space 103a into two spaces, an upstream side and a downstream side in the axial direction. Further, on the upstream side of the partition wall portion 103 of the peripheral wall portion 103, two confirmation windows 103b are formed so that the distribution space 103a can be visually recognized from the side.

The bottom wall portion 104 extends substantially in an 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. A plurality of discharge ports 106 are provided on the bottom wall portion 104 so as to face 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 around the radial outer side of the drainage portion 107 at predetermined intervals. As will be described later, the plurality of discharge ports 106 function so that the drainage flowing back from the drainage unit 107 into the distribution space 103a flows out through the discharge port 106. Therefore, in order to secure the discharge amount of indirect drainage while ensuring the structural strength, it is preferable that the total area of the discharge port 106 occupying the bottom wall portion 104 is large. More specifically, the total area of the discharge port 106 that occupies 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. A diaphragm opening 105a having a predetermined diameter is provided at the center of the partition wall portion 105 in the radial direction. The throttle port 105a is formed radially inside the plurality of discharge ports 106 around the drainage portion 107. Further, the throttle port 105a is smaller than the opening diameter of the receiving port 107a of the drainage portion 107. That is, in the bottom view (see FIG. 2C), the entire throttle opening 105a is polymerized on the drainage portion 107 (receptacle port 107a). In other words, the partition wall portion 105 extends in an annular shape so as to separate the distribution space 103a on the upstream side of the partition wall portion 105 from the discharge port 106 in the axial direction. Further, a guide portion 105b is formed on the peripheral edge of the throttle opening 105a of the partition wall portion 105 as a region that bends to the downstream side. The guide portion 105b works to guide the drainage that has flowed down on the partition wall portion 105 to the throttle port 105a. Further, the throttle opening 105a of the partition wall portion 105 is separated from the receiving port 107a of the drainage portion 107 and the upper surface of the bottom wall portion 104 at a predetermined distance.

In the present embodiment, the inflow unit 101 includes a connection mechanism 111 for connecting to connection ports 11a and 11b having different diameters of the device 11. As shown in FIGS. 2 and 3, the connection mechanism 111 includes an inner cylinder 112 opened to the upstream side and the downstream side at the center in the radial direction, and an outer cylinder 113 formed on the radial outer side of the inner cylinder 112. It is provided with 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. The connection mechanism 111 is integrally formed with the top wall portion 102.

The inner cylinder 112 has a first diameter and extends along the axial direction, and protrudes upward in the axial direction from the outer cylinder 113. A first upstream opening 112a opened in a substantially circular shape is provided at the upstream end of the inner cylinder 112. Further, a screw portion (first connection portion) 112b that can be screwed to the connection port 11a is formed on the outer surface of the inner cylinder 112. The inner cylinder 112 is opened to the downstream side so as to communicate with the distribution space 103a inside the peripheral wall portion 103. That is, the inner cylinder 112 is configured to introduce the drainage from the connection port 11a into the distribution space 103a. Further, the inner cylinder 112 includes a cap-shaped first closed body 112b (see FIG. 13) that is detachably attached to the inner cylinder 112. The first obstruction body 112c is attached to the inner cylinder 112 when the first connection portion 112b (inflow portion 101) is not used, and by closing the first upstream side opening 112a, dust, insects, etc. are inside. Prevent entry.

The outer cylinder 113 has a second diameter larger than the first diameter of the inner cylinder 112, and extends axially so as to surround the inner cylinder 112 from the outside in the radial direction. The outer cylinder 113 is integrally supported by the top wall portion 102. A second upstream opening 113a, which is annularly opened 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, a smooth adhesive portion (second connection portion) 113b that can be adhered to the second connection port 11b (see FIG. 12) having a diameter larger than that of the first connection port 11a is provided. It 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 connection port, but the inflow portion 101 (connection mechanism 111) and the drainage portion 107 are one-to-one. Regardless of which connection is used, there is only one drainage section 107 that serves as an outlet for the inflowing drainage. In other words, in the present embodiment, the drainage that has flowed in from the plurality of connection portions 112b and 113b is drained from the common drainage portion 107. Further, 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 connecting portion 113b is not used, and closes the second upstream side opening 113a to prevent dust and insects from entering the inside. do. Then, at the downstream end of the outer cylinder portion 113, the connecting wall 114 extends between the inner cylinder portion 112 and the outer cylinder portion 113.

The connecting wall 114 is an annular region that radially connects the outer circumference of the inner cylinder 112 and the inner circumference of the outer cylinder portion 113. That is, the inner cylinder 112 is supported by the connecting wall 114 with respect to the outer cylinder 113. A plurality of distribution ports 115 are bored in the connecting wall 114. Each distribution port 115 is a substantially circular through hole. The plurality of distribution ports 115 are arranged along the circumferential direction of the connecting wall 114 at substantially equal intervals. That is, the distribution port 115 is configured to allow the drainage (fluid) flowing between the inner cylinder 112 and the outer cylinder 113 to pass downstream and be introduced into the distribution space 103a. It is preferable that the total area of the distribution port 115 occupying the connecting portion 114 is large in order to improve the passage amount of the fluid while ensuring the structural strength. More specifically, the total area of the distribution port 115 occupying the connecting portion 114 is preferably about 75% to 95%.

FIG. 7 is an exploded perspective view of the indirect drainage joint 100. As shown in FIG. 7, the indirect drainage joint 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 upper member 100a and the lower side are formed by fitting the locking claw 102a formed on the tubular wall extending downward from the outer periphery of the top wall portion 102 into the slit 103c formed in the peripheral wall portion 103. The members 100b are fitted to each other. For example, by pressing the locking claw 102a with a tool or the like for the purpose of maintenance or the like, the locking claw 102a can be separated from the slit 103c and the indirect drainage joint 100 can be disassembled.

Subsequently, the configuration of the device installation structure 10 for indirectly draining the drain drainage from the device 11 to the drain pipe 13 via the indirect drainage joint 100 of the present embodiment will be described. 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 equipment installation structure 10.

The equipment installation structure 10 typically includes an equipment 11 which is a gas water heater, an indirect drainage joint 100 connected upstream to the equipment 11, and a drainage pipe 13 connected downstream of the indirect drainage joint 100. Be prepared for. As shown in FIG. 8, in the equipment installation structure 10, the equipment 11 is fixed to the wall surface of the building. A cylinder for draining drainage drainage extends from the lower surface of the device 11 (see FIG. 9). As shown in FIGS. 9 and 10, a joint 12 is screwed to the tubular body of the device 11, and an indirect drainage joint 100 is connected to the device 11 via the joint 12. That is, in the present embodiment, the joint 12 constitutes the connection port 11a of the device 11. A drainage pipe 13 is installed below the device 11. The drainage pipe 13 is composed of a sub-drainage pipe extending vertically and horizontally below the device 11 and a main drainage pipe extending vertically and vertically from the sub-drainage pipe to the drainage facility. That is, in the equipment installation structure 10, a drainage route for indirect drainage of drainage drainage is formed between the connection port 11a of the equipment 11 and the drainage pipe 13 from upstream to downstream. In the present invention, if the diameter of the upstream opening matches the diameter of the device connection port and the connection type, the joint may be omitted and the indirect drainage joint may be directly connected to the device. Further, in the present invention, the joint may be interpreted as a part of the device.

More specifically, the inflow portion 101 can flow in the drainage by screwing the male screw-shaped first connection portion 112b of the inner cylinder 112 of the indirect drainage joint 100 into the female screw portion on the inner surface of the connection port 11a (joint 12). Is connected to the connection port 11a of the device 11. On the other hand, the second upstream opening 113a and the auxiliary opening 108a are closed by the second closing body 113c and the lid body 108c. Further, the discharge port 106 of the indirect drainage joint 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 possibility that dust enters the inside of the indirect drainage joint 100 from below is reduced. The discharge port 106 may be covered with a mesh in order to more reliably prevent insects from entering the inside. Then, the indirect drainage joint 100 is connected to the drainage pipe 13 downstream thereof. More specifically, as shown in FIG. 10, the end portion of the drainage pipe 13 is inserted into the downstream opening 107b extending below the drainage portion 107 and connected to each other with an adhesive or the like. Therefore, in the device installation structure 10, the drain drainage generated from the device 11 is indirectly drained to the drain pipe 13 (drainage facility) through the indirect drainage joint 100.

FIG. 10 shows a form in which the drainage from the device 11 is drained through the indirect drainage joint 100. As shown in FIG. 10, when the amount of drainage drainage from the device 11 or the momentum is strong, the drainage may become a spray and swell or scatter outward in the radial direction in the distribution space 103a. In the indirect drainage joint 100 of the present embodiment, the drainage scattered outward in the radial direction hits the upper surface of the partition wall portion 105 and flows down from the central throttle opening 105a. Further, the drainage collected in the upper half of the distribution space 103a is guided to the throttle port 105a by the guide portion 105a. At this time, when the drainage hits the partition wall portion 105, the drainage is guided from the throttle port 105a to the drainage portion 107 while losing momentum. Since the partition wall 105 covers the plurality of discharge ports 106 from the upstream side in the axial direction, drainage is prevented from flowing out from the discharge ports 106 to the outside.

FIG. 11 shows a mode in which the drainage flowing back from the drainage pipe 13 is discharged from the discharge port 106 of the indirect drainage joint 100 in the equipment installation structure 10. As shown in FIG. 11, when the drainage rises upstream through the drainage portion 107 and the water level reaches the bottom wall portion 104, the drainage flows downward from the discharge port 106. The larger the total area of the plurality of discharge ports 106, the larger the amount of backflow drainage discharged per hour. Further, since the throttle port 105a of the partition wall portion 105 is located at a position separated upstream from the receiving port 107a of the drainage section 107, it is possible to prevent the backflow drainage from entering the upper side of the distribution space 103a through the throttle port 105a. Will be done. Therefore, the indirect drainage joint 100 of the present embodiment can suppress the rise of the backflowing drainage and effectively discharge the drainage from the discharge port 106.

FIG. 12 shows an outline of a device installation structure 10'in which an inflow portion 101 of an indirect drainage joint 100 is connected to a device having a second connection port 11b having a second diameter larger than the diameter of the first connection port 11a. It is a sectional view. As shown in FIG. 12, the outer cylinder 113 of the indirect drainage joint 100 is inserted into the connection port 11b, and the smooth adhesive portion 113b is adhered to the inner surface of the cylinder defining the second connection port 11b with an adhesive or the like. Has been done. At this time, the first upstream opening 112a of the inner cylinder 112 is open. Then, when the drainage is discharged from the connection port 11b, the drainage flows into the inner cylinder 112 and the outer cylinder 113 through the first upstream side opening 112a and the second upstream side opening 113a, and the drainage flows into the inner cylinder 112. And flows into the distribution space 103a from the downstream end of the outer cylinder 113. At this time, the drainage that has flowed between the inner cylinder 112 and the outer cylinder 113 passes through the distribution port 115 and flows into the distribution space 103a. That is, the distribution port 115 can suppress a decrease in the inflow amount of the drainage from the inflow portion 101. Further, it is possible to prevent the drainage from remaining in the area between the inner cylinder 112 and the outer cylinder 113.

FIG. 13 is a schematic cross-sectional view of the device installation structure 10 ”in which the inflow portion 101 of the indirect drainage joint 100 is connected to the device having the third connection port 11c having the third diameter. A cylinder defining the third connection port 11c is inserted into the auxiliary connection portion 108 of the indirect drainage joint 100, and the outer surface of the cylinder is adhered 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 closed body 112c and the second closed body 113c, and the other auxiliary connecting portion 108 is also closed by the lid 108d and connected. When the drainage is discharged from the port 11c, the drainage flows into the inside of the cylinder wall 108b through the auxiliary opening 108a, and flows into the flow space 103a from the opening and the notch 108c at the lower end of the cylinder wall 108b. The drainage discharged from the 108 is guided to the throttle port 105a through the partition wall portion 105, and flows out to the drainage portion 107 through the throttle port 105a. In addition, both auxiliary connection portions 108 are connected to the device connection port. Further, both the inflow portion 101 and the auxiliary connection portion 108 may be connected to the connection port of the device. Further, the third diameter is different from the first diameter or the second diameter. It may be the same.

Hereinafter, the action and effect of the indirect drainage joint (connecting member) 100 according to the embodiment of the present invention will be described.

According to the indirect drainage joint (connecting member) 100 of the present embodiment, the outer peripheral surface of the inner cylinder 112 having the first connecting portion 112b and the inner peripheral surface of the outer cylinder 113 having the second connecting portion 113b are connected to the connecting wall 114. The connecting wall 114 is formed with a distribution port 115 that allows drainage flowing between the inner cylinder 112 and the outer cylinder 113 to pass downstream. Further, the inner cylinder 112 and the outer cylinder 113 have different connection means (screw means, adhesive means). That is, the joint for indirect drainage 100 is the first and second connection ports 11a and 11b having different diameters and different connection means, selectively via either the first connection portion 112b or the second connection portion 113b. You can connect to either. Further, as shown in FIG. 12, when the second connection portion 113b is connected to the second connection port 11b, the drainage from the second connection port 11b passes through the inner cylinder 112 and is inside. Since it passes through the distribution port 115 between the cylinder 112 and the outer cylinder 113, it is possible to effectively suppress a decrease in the inflow amount from the inflow portion 101 of the indirect drainage joint 100 to the downstream side. That is, the indirect drainage joint 100 of the present embodiment can be connected to the connection ports 11 and 11b with different diameters and different connection means without reducing the inflow amount of drainage as much as possible.

[Modification example]
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, the components having the same last two digits have the same or similar characteristics, and some description thereof will be omitted.

(1) The connecting member and the connecting mechanism of the present invention are not limited to the indirect drainage joint 100 and the connecting mechanism 111 of the above-described embodiment. For example, the connection mechanism 211 of the indirect drainage joint 200 of FIG. 14 has a first connection portion 212b as an adhesive surface on the outer surface of the inner cylinder 212 and a male screw-shaped second connection portion 213b on the outer surface of the outer cylinder 213. .. Further, in the connection mechanism 211 of the embodiment, a connecting wall 214 is formed at the upstream end of the outer cylinder 213, and a plurality of distribution ports 215 are bored in the connecting wall 214. That is, in the present invention, any connecting means may be provided on the inner surface or the outer surface of the inner cylinder and the outer cylinder of the connecting mechanism. For example, both or one of the connecting portions of the inner cylinder and the outer cylinder is formed in a female screw shape. Alternatively, the inner surface of both or one of the inner cylinder and the outer cylinder may be an adhesive surface.

(2) The connecting member and the connecting mechanism of the present invention are not limited to the indirect drainage joint 100 and the connecting mechanism 111 of the above-described embodiment. For example, the connection mechanism 311 of the indirect drainage joint 300 of FIG. 15 is provided with a plurality (three) outer cylinders 313 on the outside of the inner cylinder 312 in order to correspond to connection ports having a plurality of (four types) diameters. Each outer cylinder 313 has a male screw-shaped second connecting portion 313b on the outer surface. Further, the connecting wall 314 extends in the radial direction so as to connect the outer peripheral surface of the inner cylinder 312 and the inner peripheral surface of the outermost outer cylinder 313. The connecting wall 314 is formed with a plurality of distribution ports 315 that allow the fluid flowing between the inner cylinder 312 and the (outermost) outer cylinder 313 to pass downstream. That is, the connection member and the connection mechanism of the present invention are configured to be compatible with connection ports having a diameter of 3 or more.

(3) In the indirect flat water joint 100 of the above embodiment, the connection mechanism 111 is provided in the inflow portion 101, but the present invention is not limited thereto. For example, the connection mechanism 411 of the indirect drainage joint 400 of FIG. 16 is provided not in the inflow portion 401 but in the drainage portion 407. The connection mechanism 411 is configured to connect to connection ports having different diameters of the drainage pipe to be connected. The connection mechanism 411 is formed on the inner cylinder 412 having the first connection portion 412a which is open to the upstream side and the downstream side and can be connected to the first connection port having a predetermined diameter, and the inner cylinder 412 on the radial outer side. An outer cylinder 413 having a second connection portion 413b connectable to a second connection port having a diameter larger than that of the first connection port, and a connecting wall 414 connecting the inner cylinder 412 and the outer cylinder 413 in the radial direction. Be prepared. The connecting wall 414 is formed with a distribution port 415 that allows drainage (fluid) flowing between the inner cylinder 412 and the outer cylinder 413 to pass downstream. That is, the connection mechanism of the present invention can be connected to any connection target.

(4) The indirect drainage joint 100 as a connecting member of the present embodiment is used for indirect drainage of drainage drainage of equipment 11 which is a latent heat recovery type gas water heater to a drainage pipe 13. However, the present invention is not limited to the use of the present embodiment. For example, equipment such as refrigerators, washing machines, dishwashers, water drinkers, water coolers, equipment such as sterilizers and disinfectants, air conditioning equipment and water supply pumps where backflow of wastewater poses a hygiene problem. The connecting member 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. Further, the connecting member may be a normal joint that is not an indirect drainage joint. Furthermore, the fluid is not limited to a liquid and may be a gas. That is, the technical idea related to the connecting member and the connecting mechanism of the present invention can be applied to various uses by those skilled in the art.

(5) The connecting member of the above embodiment is configured in a cylindrical shape extending in the axial direction, but the present invention is not limited thereto. For example, the connecting member may have a polygonal cross-section, an oval shape, or an elliptical shape as long as it can be indirectly or directly connected to the equipment and the drain pipe. Further, the shape of the distribution port can be arbitrarily determined. For example, a plurality of distribution ports may be irregularly formed on the connecting wall, or one large distribution port may be formed on the connecting portion. Alternatively, the flow port may be formed by a porous membrane that allows fluid to pass through. Similarly, the shape of the connecting wall can be arbitrarily determined. For example, the connecting wall may be a straight or curved beam, a bar, or the like that connects the inner cylinder and the outer cylinder.

The present invention is not limited to the above-described embodiments and modifications, and can be carried out in various embodiments as long as it belongs to the technical scope of the present invention.

10 Equipment installation structure 11 Equipment (connection target)
11a connection port (first connection port)
11b connection port (second connection port)
11c connection port (third connection port)
12 Fittings 13 Drainage pipe 100 Indirect drainage fittings (connecting members)
101 Inflow part 102 Top wall part 102a Locking claw 103 Peripheral wall part 103a Flow space 103b Confirmation window 103c Slit 104 Bottom wall part 105 Partition part 105a Squeezing port 105b Guide part 106 Discharge port 107 Drain part 107a Receiving port 107b Downstream side opening 108 Auxiliary Connection part 108a Auxiliary opening 108b Cylinder wall 108c Notch 108d Cover 111 Connection mechanism 112 Inner cylinder 112a First upstream side opening 112b First connection part (screw part)
112c 1st obstruction body 113 outer cylinder 113a 2nd upstream side opening 113b 2nd connection part (adhesive part)
113c 2nd obstruction 114 Connecting wall 115 Distribution port

Claims (7)

A connection member that is connected to the connection port to be connected.
It is provided with an inflow section for the inflow of fluid from the connection port.
The inflow part
An inner cylinder that is open to the upstream and downstream sides and has a first connection portion that can be connected to a first connection port having a predetermined diameter.
An outer cylinder formed on the radial outer side of the inner cylinder and having a second connection portion that can be connected to a second connection port having a diameter larger than that of the first connection port.
A connecting wall for connecting the inner cylinder and the outer cylinder in the radial direction is provided.
A connecting member characterized in that the connecting wall is formed with a flow port through which a fluid flowing in between the inner cylinder and the outer cylinder passes downstream. The connecting member according to claim 1, wherein the first connecting portion and the second connecting portion are made of different connecting means from each other. A screw portion that can be screwed to the first connection port is formed on the inner surface or the outer surface of the inner cylinder, and the inner surface or the outer surface of the outer cylinder can be adhered to the second connection port. The connecting member according to claim 2, wherein a smooth and smooth adhesive portion is formed. Claims 1 to 3 include a downstream opening that is directly or indirectly connected to the drain pipe downstream, and further includes a drain portion that discharges drainage from the connection port to the drain pipe. The connecting member according to any one of the above items. A peripheral wall portion that extends in the axial direction and forms a distribution space inside through which the drainage that has flowed in from the inflow portion passes.
A top wall portion connecting the inflow portion and the upstream end portion of the peripheral wall portion,
A bottom wall portion connecting the downstream end portion of the peripheral wall portion and the drainage portion is provided.
The connection member according to claim 4, wherein the bottom wall portion is provided with one or a plurality of discharge ports for drainage flowing back from the drainage portion so as to face the downstream side. The connection member according to claim 5, wherein the top wall portion is provided with one or a plurality of auxiliary connection portions that can be connected to the third connection port. It is a connection mechanism for connecting to the connection port to be connected.
An inner cylinder that is open to the upstream and downstream sides and has a first connection portion that can be connected to a first connection port having a predetermined diameter.
An outer cylinder formed on the radial outer side of the inner cylinder and having a second connection portion that can be connected to a second connection port having a diameter larger than that of the first connection port.
A connecting wall for connecting the inner cylinder and the outer cylinder in the radial direction is provided.
A connection mechanism characterized in that the connecting wall is formed with a flow port through which a fluid flowing in between the inner cylinder and the outer cylinder passes downstream.

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