JP6578530B1 - Drain trap - Google Patents

Abstract

A durable drain trap that is easy to maintain and can prevent condensation is provided. A bottomed cylindrical main body 5 having a receiving pipe section 2 for receiving liquid and a discharge pipe section 3 for discharging liquid formed on the side wall 51, an internal space 4 of the main body section 5, a storage space 7 and a discharge space 8. A detachable partition 1 that divides the inner space 4, a lid 6 that closes the internal space 4 of the main body 5, and a sealed case 9 that encloses at least a part of the outer surface of the main body 5 in which the storage space 7 is formed. And a gap 91 is formed between the sealing case 9 and the main body 5, the sealing case 9 and the main body 5 are transparent, and the sealing case 9 is attached to the main body 5. The lid 6 is configured to be detachable.

Description

  The present disclosure relates to a drain trap provided in a drain path.

  The drain trap is provided in a drainage path for draining liquid such as drain of an air conditioner to a sewage tank. 2. Description of the Related Art Conventionally, a bottomed cylindrical main body portion in which a receiving pipe portion that receives liquid and a discharge pipe portion that discharges liquid is formed on a side wall, a detachable lid portion that closes the internal space of the main body portion, and the internal space A drainage trap is known that includes a storage space that communicates with a receiving pipe section to store liquid and a detachable partition that partitions into a discharge space that communicates with a discharge pipe section and discharges liquid (Patent Literature). 1).

  The drain trap described in Patent Document 1 prevents the storage space and the discharge space from communicating with each other by a partition, and prevents the backflow of contaminated air, odor, etc. in combination with the water sealing action of the liquid stored in the storage space. To do. In this drain trap, when the inner surface of the main body and the partition body are contaminated by the liquid stored in the storage space, the lid and the partition body are configured to be detachable so that cleaning is easy. On the other hand, in a drain trap used in a hot and humid place or the like, condensation is likely to occur on the outer surface of the main body due to a temperature difference between the outside air and the liquid stored in the storage space. When dew condensation occurs, there is a disadvantage that water drops fall and the surrounding area becomes flooded. In addition, the liquid stored in the storage space by the cryogenic outside air freezes and expands, and the drain trap is damaged.

  Patent Documents 2 to 3 disclose techniques for preventing the occurrence of dew condensation in the drain trap or preventing the liquid in the storage space from freezing. The drain trap described in Patent Document 2 prevents the occurrence of condensation by covering the outer surface of a metal part with a foamed urethane layer. The drain trap described in Patent Document 3 is configured to prevent the drain trap from being damaged by freezing of the liquid in the storage space by covering the outer surface excluding the bottom surface with a heat insulating material formed of foamed resin.

  Patent Documents 4 to 6 disclose a pipe trap without a partition. Patent Document 4 discloses a heat retention cap that is in close contact with the main body of the pipe trap and the outlet side connection port. A heat insulating material for the branch pipe is attached to the bathtub side branch pipe of the U-shaped piping trap separately from the heat insulating cap, and the door lower side connection port and the tracking side connection port of the U-shaped pipe trap are separated from the heat insulating cap. The lid member is firmly fitted in the exposed state.

  In Patent Document 5, an inner body through which cold water flows from a drain outlet, an odor prevention lid that covers the opening of the inner pipe at the bottom of the inner body, and a drain pipe formed at the bottom between the outer surface of the inner body And an outer body that covers the inner body in a state in which a gap is formed. If the drainage is stored inside the inner body and a predetermined amount is stored, it is drained to the drainage pipe through the gap between the lid and the inner pipe.

  Patent Document 6 discloses a U-shaped pipe trap having a main body portion in which an outflow portion is coupled by a union nut. This U-shaped pipe trap is entirely covered with a cover, and when the pipe trap is transparent, it is described that the cover is preferably opaque.

International Publication No. 2007/116531 Japanese Utility Model Publication No. 53-9761 Japanese Utility Model Publication No. 2-106087 JP 2002-322706 A Japanese Utility Model Publication No. 53-29549 Japanese Patent Laid-Open No. 10-82085

  Since the drain traps described in Patent Documents 2 and 3 cover the outer surface of the drain trap with foamed resin, when a detachable partition body is provided like the drain trap described in Patent Document 1, the main body portion Cannot see inside. Further, even in a trap without a partition body such as a piping trap or a trap in which the partition body is not removable as described in Patent Documents 4 to 6, the inside of the trap cannot be visually recognized when the outer surface is covered with foamed resin. For this reason, there is a problem in maintenance because it is not possible to confirm the degree of contamination of the inner surface of the main body and the partition body. Moreover, as described in Patent Document 6, when the entire outer surface of the drain trap is covered with a cover, it is necessary to remove the entire cover for maintenance, and the heat insulating function cannot be exhibited. Moreover, the foamed resin has poor durability, and there is a possibility that the foamed resin may be damaged and a desired heat insulating function cannot be exhibited in a severe use environment.

  Therefore, a highly durable drainage trap that is easy to maintain and can prevent condensation is desired.

  The drainage trap according to the present disclosure has a characteristic configuration in which a receiving pipe section that receives liquid and a discharge pipe section that discharges liquid are formed on a side wall of the cylindrical main body section, and the internal space of the main body section includes the receiving pipe. A detachable partition that partitions into a storage space that communicates with the reservoir and stores the liquid and a discharge space that communicates with the discharge pipe and discharges the liquid; and a lid that closes the internal space of the main body; A sealing case that encloses at least a part of the outer surface of the main body in which the storage space is formed, and a gap is formed between the sealing case and the main body, and the sealing case The main body is transparent, and the lid is configured to be detachable in a state where the sealed case is mounted on the main body.

  In this configuration, since a gap is formed between the main body portion and the sealing case that surrounds at least a part of the outer surface of the main body portion in which the storage space is formed in the main body portion, the main body portion has a storage space. Even when there is a temperature difference between the stored liquid and the outside air, the formation of condensation can be suppressed by the gap. As a result, it is possible to prevent the inconvenience that the water droplet falls and the surrounding area is flooded. Moreover, since it is possible to form an integral unit with the main body if it is a sealed case, it has excellent aesthetics and high durability compared to conventional foamed resins, and the drain trap can be used over a long period of time.

  Further, if both the sealed case and the main body are made transparent as in this configuration, the visibility of the internal space of the main body can be improved, and the inner surface of the main body and the degree of dirt on the partition can be confirmed. . In addition, if the lid is configured to be detachable with the airtight case attached to the main body, it is possible to clean the removable partition body and the like by removing the lid while preventing condensation. Is extremely easy. By the way, when the drain trap provided in the drain piping of the air conditioner is dirty or clogged, the drain pan in the air conditioner body is dirty. If the dirt in the air conditioner body is left unattended, the drain pan closes and water leaks from the air conditioner body. However, in order to check the condition of the drain pan, it is necessary to disassemble the air conditioner placed on the ceiling, etc. Cost. If both the sealed case and the main body are made transparent as in this configuration, it is possible to easily check the contamination of the drain trap visually, and it is possible to determine whether the drain pan cleaning of the air conditioner main body is necessary. Therefore, it is possible to prevent water leakage due to leaving the drain pan cleaning. As described above, it was possible to provide a highly durable drainage trap that is easy to maintain and can prevent condensation.

  Another feature of the present invention is that the connection portion between the side wall and the receiving pipe portion and the connection portion between the side wall and the discharge pipe portion are covered with the sealing case in a state where a gap is formed between the sealing case and the sealing case. It is in the point.

  Since liquid easily collects at the connection part of the receiving pipe part or the discharge pipe part and the side wall, if a gap is formed between the connection part and the sealed case as in this configuration, the receiving pipe part or the discharge pipe Condensation formed on the surface of the part can be reliably prevented.

  Another characteristic configuration is that the sealed case includes a plurality of divided bodies that are divided from each other.

  If the sealed case is configured as a split body as in this configuration, the sealed case can be easily attached to the main body even if it is a drainage trap with a complicated shape in which the receiving pipe and the discharge pipe are formed in the main body. can do.

It is a longitudinal cross-sectional view of a drain trap. It is the II-II sectional view taken on the line of FIG. It is the III-III sectional view taken on the line of FIG. It is an external appearance perspective view of a drain trap. It is a disassembled perspective view of a drain trap. It is a longitudinal cross-sectional view of the drain trap which concerns on another embodiment. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is a disassembled perspective view of the drain trap concerning another embodiment.

  Hereinafter, an embodiment of a drain trap according to the present disclosure will be described based on the drawings. However, the present invention is not limited to the following embodiments, and various modifications can be made without departing from the scope of the invention.

  As shown in FIGS. 1 to 5, the drain trap X includes a bottomed cylindrical main body 5 in which a receiving pipe section 2 that receives liquid and a discharge pipe section 3 that discharges liquid are formed on a side wall 51. A lid portion 6 that closes the internal space 4 of the portion 5, a storage space 7 that receives and stores the liquid from the receiving pipe portion 2 and a discharge space 8 that communicates with the discharge pipe portion 3 and discharges the liquid. And a partition 1 for partitioning. Furthermore, the drain trap X is a sealed case that surrounds at least a part of the side wall 51 of the main body 5 and the bottom 52 of the main body 5 (at least a part of the outer surface of the main body 5 where the storage space 7 is formed) in a sealed state. 9 is provided. Hereinafter, the lid 6 side may be described as the upper side and the bottom 52 side of the main body unit 5 as the lower side.

  The main body 5 is formed using a resin material, and is formed in a cylindrical shape having the bottom 52 as a flat surface. The receiving pipe part 2 and the discharge pipe part 3 are integrally formed with the side wall 51 as a flow path extending in the horizontal direction from the side wall 51, and are connected to positions facing each other on the side wall 51 of the main body part 5. The connection location 2A of the receiving pipe portion 2 and the connection location 3A of the discharge pipe portion 3 are so high that the reception pipe portion 2 is higher than the discharge pipe portion 3 by a predetermined value (for example, 5 mm). There is a difference. The pipe axis direction Y of the receiving pipe part 2 and the pipe axis direction Y of the discharge pipe part 3 are shifted in parallel in the vertical direction in the longitudinal sectional view (side view) shown in FIG. It corresponds in planar view (plan view). In this way, by providing a height difference between the receiving pipe part 2 and the discharge pipe part 3, the liquid easily flows from the receiving pipe part 2 toward the discharge pipe part 3.

  Of the outer surface of the side wall 51 of the main body 5, the surface in the direction perpendicular to the direction in which the receiving pipe part 2 and the discharge pipe part 3 are connected is a flat surface 51 a (see FIGS. 4 to 5). In addition, an inclined step portion 51b is provided on the outer surface of the side wall 51 so as to be inclined from the upper side of the receiving pipe portion 2 toward the lower side of the discharge pipe portion 3. The diameter of the portion 51b is larger than that of the bottom 52 side.

  The lid portion 6 is formed in a circular shape in plan view, and can be attached to the main body portion 5 by screwing of a screw portion 18 formed on the outer peripheral surface of the main body portion 5 and the inner peripheral surface of the lid portion 6 (see FIG. 1). In addition, a plurality of convex portions 6a protruding radially outward at equal intervals are formed on the outer periphery of the lid portion 6. By hooking a user's finger on the convex portions 6a, the main body portion 5 of the lid portion 6 is formed. Is easy to mount (see FIG. 4). The lid portion 6 is configured to be detachable in a state where the sealed case 9 is attached to the main body portion 5.

  Moreover, the reflector 23 (for example, reflective tape) is affixed on the outer part of the cover part 6 over the perimeter of the circumferential direction (refer FIGS. 4-5). Thereby, when the drain trap X is installed behind the ceiling, the operator can easily recognize the position of the drain trap X by irradiating the reflector 23 with light. In addition to the drainage path in which the drain trap X is disposed, various paths may be provided. For example, the reflector 23 provided in the drain trap X is red and the member provided in the other path is yellow. A reflector can be provided, and the reflector can be color-coded for each path.

  The partition 1 is comprised from the cylindrical 1st partition part 10 and the plate-shaped 2nd partition part 11 extended outward from the 1st partition part 10 over the perimeter of the circumferential direction. . The first partition 10 has a notch 12 and a rectangular opening 13 in which a part in the circumferential direction is notched along the vertical direction in the region above the second partition 11 (see FIG. 5). The opening 13 is disposed at a position facing the notch 12. The second partitioning portion 11 is inclined over the entire circumference in the circumferential direction of the first partitioning portion 10 so that the vicinity of the lower end position of the notch portion 12 is the lowest and the vicinity of the center position of the opening 13 is the highest. It is provided in a state (see FIG. 1).

  The partition 1 can be attached to and detached from the internal space 4 of the main body 5, and in a state where the partition 1 is mounted in the internal space 4 of the main body 5, the lower side of the internal space 4 of the main body 5 is partitioned into a storage space 7. The upper side of 4 is partitioned into a discharge space 8. As described above, the partition body 1 partitions the internal space 4, so that the entire bottom portion 52 of the main body 5 is used as the storage space 7. Further, the partition body 1 receives and supports the ball-shaped valve body 15 that floats to flow the liquid from the storage space 7 to the discharge space 8 when a liquid of a set amount or more is stored in the storage space 7 and the valve body 15. And a valve seat 16 to be operated. The valve seat 16 is formed in a ring shape arranged in the internal space of the first partition 10. The valve body 15 is configured as a normally closed type that closes the opening of the ring-shaped valve seat 16.

  As shown by a two-dot chain line in FIG. 1, when a liquid of a set amount or more is stored in the storage space 7, the valve body 15 rises from the valve seat 16 and opens, and the liquid flows from the storage space 7 to the discharge space 8. Then, it is discharged from the discharge pipe portion 3. When the amount of liquid stored in the storage space 7 is less than the set amount, the valve body 15 descends and comes into contact with the valve seat 16 to close the valve. At this time, the inner peripheral surface of the first partition portion 10 guides the valve body 15 to float and descend along the vertical direction.

  The valve seat 16 is disposed in the partition body 1 so as to be positioned at a position lower than the lower end portion 3 a of the discharge pipe portion 3 in a state where the partition body 1 is mounted in the internal space 4 of the main body portion 5. That is, there is a time difference from when the valve body 15 floats up from the valve seat 16 until the liquid is discharged from the discharge pipe portion 3. Due to this time difference, even when the amount of liquid flowing into the storage space 7 from the receiving pipe portion 2 is very small, the levitation of the valve body 15 from the valve seat 16 and the lowering of the valve body 15 to the valve seat 16 are repeated in a short time. This suppresses the generation of noise.

  Further, the valve seat 16 is disposed above the lower end portion of the first partition portion 10 in the vertical direction, and the first partition portion 10 has a hanging portion 10 a extending downward from the valve seat 16. is doing. By providing the drooping portion 10 a in this way, the storage space 7 is formed in a U-shaped flow path that is inverted at the bottom 52 of the main body 5, and the storage space 7 is watered by the liquid stored in the storage space 7. It is configured to be sealed. In addition, by providing the storage space 7 on the bottom 52 side of the main body 5, the storage space 7 can be always sealed with the liquid stored in the storage space 7 when the valve body 15 floats from the valve seat 16. It is.

  Between the lid 6 and the partition 1 mounted in the internal space 4, a shield member 17 is provided that is in close contact with the lid 6 and has a small coefficient of friction with the partition 1. The shield member 17 is formed in a disk shape from a resin such as silicon. And the upper surface of the shield member 17 on the side in contact with the lid portion 6 is in close contact with the back surface of the lid portion 6 due to the suction cup effect. Further, the lower surface of the shield member 17 on the side in contact with the partition body 1 mounted in the internal space 4 is subjected to a slip process to reduce the friction coefficient between the lower surface of the shield member 17 and the partition body 1. Yes.

  By attaching the lid part 6 to the main body part 5, it receives a pressing force in the vertical direction from the lid part 6, and applies a component force along the vertical direction to a part of the partition body 1 over the entire circumference of the side wall 51. In addition, the sealing portion 14 that is in close contact with the partition body 1 and the side wall 51 of the main body portion 5 is provided. The sealing portion 14 includes a main body side sealing portion 14 a formed on the side wall 51 of the main body portion 5 and a partition body side sealing portion 14 b formed on the partition body 1.

  The main body side sealing portion 14 a is a step provided over the entire circumference of the side wall 51 in a state of protruding inward from the side wall 51. And the step part which is the main body side sealing part 14a has the main body part so that the vicinity of the upper end position of the receiving pipe part 2 is the highest in the circumferential direction of the main body part 5 and the lower end position vicinity of the discharge pipe part 3 is the lowest. 5 is provided in a state of being inclined over the entire circumference in the circumferential direction. The partition body side sealing portion 14 b is an outer side end portion of the second partition portion 11 that is inclined over the entire circumference in the circumferential direction of the partition body 1. The partition member-side sealing portion 14b is provided with a resin member 20 (for example, an elastomer resin) so as to be sandwiched between the partition member-side sealing portion 14b from above and below.

  In a state in which the partition body 1 is mounted in the internal space 4 of the main body portion 5, the shield member 17 is interposed between the partition body 1 and the screw portion 18 is screwed to attach the lid portion 6 to the main body portion 5. At this time, the lid portion 6 presses the partition body 1 downward, and the main body side sealing portion 14a and the partition body side sealing portion 14b receive a downward pressing force. The main body side sealing portion 14a and the partition body side sealing portion 14b are in close contact with each other while pressing the partition body side sealing portion 14b against the main body side sealing portion 14a by the downward pressing force. In this way, the partitioning body side sealing portion 14b and the main body side sealing portion 14a are brought into close contact with each other over the entire inner surface of the side wall 51 of the main body portion 5 to block the storage space 7 and the discharge space 8 from each other.

  In the resin member 20 of the partition body side sealing portion 14b, a part 8a of the discharge space 8 toward the discharge pipe portion 3 of the side wall 51 in a state where the partition body 1 is mounted in the internal space 4 is connected to the lower end portion 3a of the discharge pipe portion 3. A height adjusting member 21 having the same height is disposed. In a position corresponding to the discharge pipe part 3 in the circumferential direction of the side wall 51 of the main body part 5, the step part which is the main body side sealing part 14 a is located below the lower end part 3 a of the discharge pipe part 3. Therefore, when the partition 1 is mounted in the internal space 4, a part 8 a of the discharge space 8 toward the discharge pipe part 3 is lower than the lower end part 3 a of the discharge pipe part 3. Therefore, by forming the height adjusting member 21, the liquid is prevented from being stored in a part of the discharge space 8 toward the discharge pipe portion 3, thereby suppressing the occurrence of liquid corrosion. Further, the height adjusting member 21 is also used in the resin member 20 provided in the partition side sealing portion 14b.

  As shown in FIG. 5, the partition body 1 includes leg portions 19 that protrude downward from the internal space 4 when mounted in the internal space 4. A plurality of the leg portions 19 are provided at intervals in the circumferential direction of the first partition portion 10. As a result, when the partition 1 is inserted into the internal space in the upside down state, the leg 19 protrudes upward from the internal space 4 and the lid 6 cannot be attached to the main body 5. In this way, when inserting the partition body 1 into the internal space 4, it is possible to prevent the partition body 1 from being misoriented in the vertical direction.

  The main body 5 and the partition 1 are transparent, and the valve body 15 is a color (for example, blue) that can be distinguished from the main body 5 and the partition 1. Thereby, the operator can visually recognize the position of the valve body 15 from the outside of the main body 5 in a state where the partition 1 is mounted in the internal space 4 of the main body 5. Therefore, it is possible to easily check whether or not the partition body 1 is attached at an appropriate position and to check the degree of contamination of the partition body 1. Here, “transparent” means a state in which the inside of the main body 5 can be seen through, including colorless and transparent or colored and transparent, and also translucent.

  As shown in FIG. 1, the sealed case 9 is attached to the outside of the main body 5 and is formed of the same transparent resin material as the main body 5. The sealed case 9 surrounds substantially the entire region of the side wall 51 of the main body 5 and the bottom 52 of the main body 5 in a sealed state, and a gap 91 in which air is interposed between the sealed case 9 and the main body 5. Is formed. Thereby, even when there is a temperature difference between the liquid stored in the storage space 7 on the bottom 52 side of the main body 5 and the outside air, the generation of condensation can be suppressed by the gap 91. Further, the connecting portion 2A between the side wall 51 and the receiving pipe portion 2 and the connecting portion 3A between the side wall 51 and the discharge pipe portion 3 are covered with the sealed case 9 in a state where a gap 91 is formed between the sealed case 9 and the connecting portion 3A. ing. Since liquid easily collects in the connection portions 2A and 3A between the receiving pipe portion 2 and the discharge pipe portion 3 and the side wall 51, a gap is formed between the connection portions 2A and 3A and the sealed case 9 as in the present embodiment. If 91 is formed, the dew condensation formed on the surface of the receiving pipe part 2 or the discharge pipe part 3 can be reliably prevented.

  Thus, since the sealing case 9 is formed of the same transparent resin material as that of the main body 5, the transmittance of the sealing case 9 and the main body 5 is the same. Since air exists between them, the operator can easily visually recognize the position of the valve body 15 from the outside of the main body 5. By the way, when the drain trap X provided in the drain pipe of the air conditioner is dirty or clogged, the drain pan in the air conditioner body is dirty. If the dirt in the air conditioner body is left unattended, the drain pan closes and water leaks from the air conditioner body. However, in order to check the condition of the drain pan, it is necessary to disassemble the air conditioner placed on the ceiling, etc. Cost. If the sealed case 9 and the main body 5 are both transparent as in the present embodiment, it is possible to easily check the degree of contamination of the drain trap X visually, and it is possible to determine whether or not the drain pan cleaning of the air conditioner main body is necessary. . Therefore, it is possible to prevent water leakage due to leaving the drain pan cleaning.

  The sealed case 9 includes a plurality of (two in this embodiment) divided bodies 92 that are divided from each other, and a cup-shaped bottom side connecting member 93 that connects the pair of divided bodies 92 from the bottom 52 side (the storage space 7 side). (An example of the first connecting member) and an annular column-shaped lid portion side connecting member 94 (of the second connecting member) that connects the pair of divided bodies 92 from the lid portion 6 side (the side opposite to the bottom side connecting member 93). (See FIG. 4 to FIG. 5).

  The divided body 92 includes a first divided body 92A and a second divided body 92B. The first divided body 92A and the second divided body 92B are in the tube axis direction of the receiving pipe portion 2 and the discharge pipe portion 3. It is formed symmetrically with respect to Y (see FIG. 2). That is, the first divided body 92 </ b> A and the second divided body 92 </ b> B have a halved shape that is coupled to each other from the side of the main body 5. As shown in FIG. 5, the first divided body 92 </ b> A and the second divided body 92 </ b> B each have a flat joint surface 92 a along the tube axis direction Y and an arc-shaped first that is in close contact with the outer peripheral surface of the receiving pipe portion 2. The contact surface 92 b and the arc-shaped second contact surface 92 c that is in close contact with the outer peripheral surface of the discharge pipe portion 3 are provided. Each of the first divided body 92A and the second divided body 92B is formed with a concave portion 92a1 and a convex portion 92a2 along the joint surface 92a, and the concave portion 92a1 and the convex portion 92a2 are fitted to each other to form the divided body 92. Is assembled. Further, the labyrinth structure is formed by fitting the concave portion 92a1 and the convex portion 92a2, and the air in the gap 91 is prevented from leaking to the outside. Furthermore, the first contact surface 92b and the second contact surface 92c are in close contact with the outer peripheral surfaces of the receiving tube portion 2 and the discharge tube portion 3, respectively, thereby preventing the air in the gap 91 from leaking to the outside.

  As shown in FIGS. 3 and 5, a flat surface 92d is formed on the inner surface of each of the first divided body 92A and the second divided body 92B so that the inner surface facing the flat surface 51a of the main body 5 is flat. The outer surface of the portion where the flat surface 92d is formed is also a flat surface 92e. In addition, an engaging step portion 92f, which is a step portion that is retreated in the radially inward direction from the outer surface and engages with the bottom side connecting member 93, is formed at the bottom of each of the first divided body 92A and the second divided body 92B. ing. A flat surface 92e is continuously formed on the outer surface of the engaging step portion 92f, and the cross-sectional shape of the bottom portion of the divided body 92 is formed in a circular shape having a pair of opposed linear side portions. . An engaging recess 92f1 that engages with the engaging protrusion 93a of the bottom side connecting member 93 is formed in the linear portion of the outer surface of the engaging step portion 92f. By forming the cross-sectional shape of the bottom portion of the divided body 92 into a circular shape having a pair of opposed linear side portions, rotation of the bottom side connecting member 93 engaged with the engagement step portion 92f is prevented.

  At the upper ends of the first divided body 92A and the second divided body 92B, an annular seal surface 92g projecting in an annular shape in the radially inward direction is formed, and the annular seal surface 92g and the outer surface of the main body portion 5 are in close contact with each other. This prevents the air in the gap 91 from leaking to the outside. Further, on the outer surfaces of the upper ends of the first divided body 92A and the second divided body 92B, an engagement concave portion 92h that engages with the first engagement protrusion 94a of the lid-side connecting member 94 is formed.

  The bottom side connecting member 93 is formed in a cup shape having a bottom wall 93A and a side wall 93B protruding in an annular shape from the outer periphery of the bottom wall 93A. The side wall 93 </ b> B has a shape along the side surface shape of the bottom of the divided body 92. By attaching the bottom side connecting member 93 to the bottoms of the pair of divided bodies 92 joined to each other, the pair of divided bodies 92 are connected. At this time, the engagement protrusion 93a formed on the side wall 93B is engaged with the engagement recess 92f1 of the divided body 92 with a gap 95 formed between the bottom of the divided body 92 and the bottom wall 93A. . This gap 95 is filled with air in the same manner as the gap 91 described above.

  The lid portion side connecting member 94 has an annular column shape having an annular flange portion 94A having an inner diameter larger than the outer diameter of the main body portion 5 and a standing portion 94B standing on the bottom 52 side from the outer periphery of the flange portion 94A. Is formed. The lower surface (inner surface) of the collar portion 94 </ b> A is in contact with the upper surface of the divided body 92. The standing portion 94B is formed with a first engagement protrusion 94a that engages with the engagement recess 92h of the divided body 92 on the proximal end side, and engages with the upper end of the flat surface 92e of the divided body 92 on the distal end side. A second engaging projection 94b is formed. The first engagement protrusion 94 a and the second engagement protrusion 94 b engage with the divided body 92, so that the lid-side connecting member 94 is firmly fixed to the divided body 92.

  In the present embodiment, since the gap 91 is formed between the main body 5 and the sealed case 9 that surrounds almost the entire region of the side wall 51 of the main body 5 and the bottom 52, the bottom 52 side of the main body 5 Even when there is a temperature difference between the liquid stored in the storage space 7 and the outside air, the formation of condensation can be suppressed by the gap 91. As a result, it is possible to prevent the inconvenience that the water droplet falls and the surrounding area is flooded. Further, since the bottom portion 52 side of the main body portion 5 is the liquid storage space 7, a gap 95 formed between the bottom portion of the divided body 92 and the bottom wall 93 </ b> A of the bottom portion side connecting member 93 is provided as in this embodiment. Then, the heat retention effect is improved by the gap 91 and the gap 95, and the liquid can be prevented from freezing. In addition, since the liquid easily accumulates in the connection portions 2A and 3A between the receiving pipe portion 2 and the discharge pipe portion 3 and the side wall 51, the connection portions 2A and 3A and the sealed case 9 are disposed as in the present embodiment. If the gap 91 is formed in the surface, the condensation formed on the surfaces of the receiving pipe part 2 and the discharging pipe part 3 can be reliably prevented. In addition, since the sealed case 9 in the present embodiment constitutes an integrated unit that is continuous in appearance with the main body 5, it has excellent aesthetics and high durability, and the drain trap X can be used over a long period of time.

  As in the present embodiment, when the joining surface 92a of the divided body 92 is along the tube axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3, the sealed case 9 is formed from the side of the receiving pipe portion 2 and the discharge pipe portion 3. Is easy to mount. Further, in forming the gap 91 between the sealed case 9 and the main body 5, if the bottom side connecting member 93 and the lid side connecting member 94 are provided on the bottom side and the lid side, the drain trap X can be manufactured. Is extremely easy.

[Another embodiment]
(1) The drain trap X which concerns on another embodiment is shown by FIGS. In addition, in order to make an understanding of drawing easy, the same name and code | symbol are used for the same member, and only a different structure is demonstrated. The sealed case 9 in the present embodiment includes an arc-shaped first contact surface 92b that is in close contact with the outer peripheral surface of the receiving pipe portion 2, and an arc-shaped second contact surface 92c that is in close contact with the outer peripheral surface of the discharge pipe portion 3. The receiving pipe part 2 and the discharge pipe part 3 are in close contact with intermediate portions along the pipe axis direction Y, respectively. Thereby, compared with the above-described embodiment, a large number of gaps 91 are secured between the sealing case 9 and the receiving pipe part 2 and the discharging pipe part 3 in the main body part 5, so that the receiving pipe part 2 and the discharging pipe part 3 Condensation formed on the surface can be prevented more reliably.

  Moreover, in this embodiment, the engagement form of the division body 92 and the cover part side connection member 94 is varied. Specifically, an engagement recess 92i is provided on the outer surfaces of the upper ends of the first divided body 92A and the second divided body 92B, and an engagement protrusion 94c is provided on the base end side of the standing portion 94B of the lid side connecting member 94. The lid-side connecting member 94 is fixed to the divided body 92 by engaging the engaging recess 92i and the engaging protrusion 94c (see FIGS. 8 to 9). That is, unlike the above-described embodiment, the second engagement protrusion 94b that engages with the upper end of the flat surface 92e of the divided body 92 is not provided on the distal end side of the standing portion 94B. Even in this case, by screwing the lid 6 to the main body 5, the lid 6 presses the lid-side connecting member 94 downward, so that the lid-side connecting member 94 is firmly fixed to the divided body 92. The In the present embodiment, the engagement form of the divided body 92 and the bottom side connecting member 93 is different. Specifically, the engagement protrusion 93a of the bottom side connecting member 93 in the above-described embodiment is an engagement recess 93a1, and the engagement recess 92f1 of the divided body 92 is an engagement protrusion 92f2.

(2) A heat insulating sheet may be attached to the gap 95 formed between the bottom of the divided body 92 and the bottom wall 93 </ b> A of the bottom side connecting member 93. This heat insulating sheet is composed of a heat insulating material such as aluminum or a laminated material in which the surface of the laminated resin layer is covered with aluminum. Since the bottom 52 side of the main body 5 is the liquid storage space 7, if a heat insulating sheet is provided on the bottom side connecting member 93 disposed on the bottom 52 side of the main body 5, the liquid in the storage space 7 can be frozen. Can be prevented. And when the heat insulation sheet is arrange | positioned at the bottom part 52 side of the main-body part 5, the visibility of the internal space 4 of the main-body part 5 is not inhibited.
(3) A hygroscopic agent may be disposed instead of or in addition to the heat insulating sheet attached to the gap 95. In this case, even if high-humidity air is sealed in the gap 95, condensation inside the gap 95 can be prevented. As a result, the heat reflux rate decreases and the dew condensation prevention effect increases.

(4) The sealed case 9 may be provided only in the storage space 7 portion. That is, you may provide the sealing case 9 facing the downward side rather than the inclination step part 51b in the side wall 51 of the main-body part 5. As shown in FIG. Moreover, you may provide the sealing case 9 facing the downward side rather than the receiving pipe part 2 and the discharge pipe part 3 in the side wall 51 of the main-body part 5, and it is not specifically limited.
(5) Although the divided body 92 of the sealed case 9 is formed symmetrically with respect to the tube axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3, the divided body 92 of the sealed case 9 is divided into two in the vertical direction. Also good.
(6) A sealing member may be provided on the joining surface 92a and the contact surfaces 92b and 92c.
(7) The air gap 91 and the gap 95 may be configured in a vacuum.
(8) The lid 6 may be omitted, and the partition 1 may be configured so as not to be removable.

(9) In the above embodiment, the lid portion 6 can be attached to the main body portion 5 by screwing the screw portion 18, but the lid portion 6 is press-fitted and fitted into the main body portion 5 to be attached to the main body portion 5. You may comprise in the fitting type which enables. That is, how the lid 6 is attached to the main body 5 can be appropriately changed.

(10) In the embodiment described above, the bottom of the main body 5 is a flat surface, and the entire bottom of the main body 5 is used as the storage space 7. It is also possible to appropriately change the shape of the bottom part to make the entire bottom part of the main body part 5 a storage space 7.

(11) In the above embodiment, the shape of the side wall 51 of the main body 5 and the shape of the partition 1 in a plan view are substantially elliptical. However, for example, the shape may be a rectangular shape. Can be changed as appropriate.

(12) In the above embodiment, the valve body 15 is exemplified as a ball, but for example, the valve body 15 may be configured by a plate-like body that can swing around a horizontal axis. The form of the body 15 can be changed as appropriate.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a drainage trap including a cylindrical main body having an internal space communicating with a receiving pipe portion and a discharge pipe portion, and a partition body that partitions the internal space of the main body into a storage space and a discharge space. .

1: division body 2: receiving pipe part 3: discharge pipe part 4: internal space 5: body part 51: side wall 6: lid part 7: storage space 8: discharge space 9: sealing case 91: gap 92: divided body X: Drain trap

Claims (3)

A cylindrical main body part formed on the side wall with a receiving pipe part for receiving liquid and a discharge pipe part for discharging liquid;
A detachable partition that partitions the internal space of the main body into a storage space that communicates with the receiving pipe and stores liquid and a discharge space that communicates with the discharge pipe and discharges liquid.
A lid for closing the internal space of the main body;
A sealed case that surrounds at least a part of the outer surface of the main body portion in which the storage space is formed,
A gap is formed between the sealed case and the main body,
The sealed case and the main body are transparent,
A drain trap in which the lid is detachable in a state where the sealed case is mounted on the main body.   The connection location of the said side wall and the said receiving pipe part, and the connection location of the said side wall and the said discharge pipe part are covered with the said sealing case in the state in which the space | gap was formed between the said sealing cases. Drain trap as described in.   The drainage trap according to claim 1, wherein the sealed case is configured by a plurality of divided bodies that are divided from each other.

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