US20210054607A1 - Drain trap - Google Patents
Drain trap Download PDFInfo
- Publication number
- US20210054607A1 US20210054607A1 US17/049,453 US201917049453A US2021054607A1 US 20210054607 A1 US20210054607 A1 US 20210054607A1 US 201917049453 A US201917049453 A US 201917049453A US 2021054607 A1 US2021054607 A1 US 2021054607A1
- Authority
- US
- United States
- Prior art keywords
- main body
- body portion
- partitioning
- sealing case
- drain trap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
- E03C1/298—Odour seals consisting only of non-return valve
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/28—Odour seals
- E03C1/281—Odour seals using other sealants than water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/30—Devices to facilitate removing of obstructions in waste-pipes or sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/227—Condensate pipe for drainage of condensate from the evaporator
Definitions
- This disclosure relates to a drain trap installed in the course of a drainage route.
- a drain trap is installed in the course of a drainage route for discharging liquid from a drain water of an air conditioner etc. into a sewage ditch.
- a drain trap including a main body portion in the form of a bottomed cylinder having a lateral wall on which a receiving pipe portion for receiving liquid and a discharge pipe portion for discharging the liquid are formed, an attachable/detachable lid portion for closing the inside space of the main body portion, and an attachable/detachable partitioning body for partitioning the inside space into a reservoir space communicated to the receiving pipe portion and reserving liquid therein and a discharge space communicated to the discharge pipe portion and discharging liquid (see Patent Document 1).
- the partitioning body provides non-communication between the reservoir space and the discharge space, so that in combination with water sealing effect provided by the liquid reserved in the reservoir space, reverse flow of contaminated air, odor etc. is prevented.
- this drain trap if the inner face of the main body portion and/or the partitioning member becomes soiled by the liquid reserved in the reservoir space, cleaning thereof is facilitated by the attachable/detachable features of the lid portion and the partitioning member.
- condensation tends to occur on the outer face of the main body portion due to a temperature difference between the ambient air and the liquid reserved in the reservoir space.
- condensation there occurs such inconvenience as dripping of water droplets, thus immersing its surrounding in water.
- freezing and expansion of the liquid reserved in the reservoir space by ambient air of extremely low temperature which can cause damage to the drain trap.
- Patent Documents 2-3 disclose techniques for preventing occurrence of condensation in a drain trap or freezing of liquid in a reservoir space.
- a drain trap disclosed in Patent Document 2 is configured to prevent occurrence of condensation by coating an outer surface of metal portion with urethane foam layer.
- a drain trap disclosed in Patent Document 3 is configured to prevent damage to the drain trap due to freezing of liquid in the reservoir space by coating an outer lateral face thereof except for its bottom face with a thermal insulator material made of foamed resin.
- Patent Documents 4-6 disclose pipe drain traps having no partitioning member.
- Patent Document 4 discloses a thermal insulating cap to be gaplessly attached to a main body of a pipe drain trap and an outlet side connecting opening.
- a thermal insulating material is attached separately from or in addition to the thermal insulating cap.
- a door lower side connecting opening and a reheating side connecting opening of the U-shaped pipe drain trap are exposed from the thermal insulating cap and firmly engaged with the lid member.
- Patent Document 5 discloses an inner body through which cold water from a water discharge opening flows, an odor-preventing lid body that closes an opening of an inner pipe of a bottom portion of the inner body, and an outer body having a bottom portion where the discharge pipe is formed and configured to cover the inner body with forming a gap with the outer surface of the inner body.
- drainage water is reserved and when it has been reserved to a predetermined amount, it will be discharged into a discharge pipe via the gap between the lid body and the inner pipe.
- Patent Document 6 discloses a U-shaped pipe drain trap having a main body portion having its outlet portion connected with a union nut. This U-shaped pipe drain trap is covered entirely with a cover. And, it is described that the cover is made non-transparent preferably in case the plumbing drain trap is made transparent.
- the outer surface of the drain trap is covered with resin foam.
- a detachable partitioning body were provided therein like the drain trap disclosed in Patent Document 1, this would inhibit visual recognition of the inside of the main body portion.
- the drain traps having no partitioning body or having a non-detachable partitioning body such as the pipe drain traps disclosed in Patent Documents 4-6, such outer surface coating with foamed resin, if provided, would inhibit visual recognition of the inside of the drain trap. Therefore, there exists a problem in the respect of maintenance since, confirmation of soiled condition of the inner surface of the main body portion and the partitioning member would be not possible.
- the drain trap comprises:
- a cylindrical main body portion having a lateral wall on which a receiving pipe portion receiving liquid and a discharge pipe portion discharging the liquid are formed;
- an attachable/detachable partitioning body partitioning an inside space of the main body portion into a reservoir space communicated to the receiving pipe portion and reserving liquid therein and a discharge space communicated to the discharge pipe portion and discharging the liquid;
- a sealing case surrounding, under a sealed state, at least a portion of an outer surface of the main body portion in which the reservoir space is formed;
- the sealing case and the main body portion being formed transparent;
- the lid portion being attachable/detachable when the sealing case is attached to the main body portion.
- a gap is formed between the sealing case surrounding, under a sealed state, at least a portion of an outer surface of the main body portion in which the reservoir space is formed and the main body portion.
- both the sealing case and the main body portion are formed transparent as provided in the above-described inventive configuration, so that visual recognition of a degree of soiling developed on the inner surface of the main body portion and the partitioning body is made possible.
- the lid portion is configured to be attachable/detachable when the sealing case is attached to the main body portion, with detachment of the lid portion with prevention of condensation, cleaning of the attachable/detachable partitioning body, etc. is made possible, so the maintenance can be made extremely easily.
- both the sealing case and the main body portion are formed transparent as provided in the above-described inventive configuration, the soiling degree of the drain trap can be readily checked by visual recognition, so that need or no-need of cleaning of the drain pan of the air conditioner body can be made. Therefore, water leak due to negligence of drain pain cleaning can be prevented. In this way, a drain trap that allows easy maintenance, yet has high durability with ability to prevent condensation has been realized.
- a connecting portion between the lateral wall and the receiving pipe portion and a connecting portion between the lateral wall and the discharge pipe portion are covered by the sealing case, with air gaps being formed relative to the sealing case.
- Liquid tends to be accumulated and stay at the connecting portions between the lateral wall and the receiving/discharging pipe portions. Therefore, when air gaps are formed between these respective connecting portions and the sealing case as provided in the above-described arrangement, condensation which may be formed on the surfaces of the receiving pipe portion and the discharge pipe portion can be prevented in a reliable manner.
- the sealing case is constituted of a plurality of split bodies split from each other.
- the sealing case is constituted of split bodies as provided in the above-described arrangement, even in the case of a drain trap having a complicated shape having the receiving pipe portion and the discharge pipe portion being formed in the main body portion, the sealing case can be readily attached to the main body portion.
- FIG. 1 is a vertical section view of a drain trap
- FIG. 2 is a section view along II-II line in FIG. 1 ,
- FIG. 3 is a section view along III-III line in FIG. 1 ,
- FIG. 4 is an outer appearance perspective view of the drain trap
- FIG. 5 is an exploded perspective view of the drain trap
- FIG. 6 is a vertical section view showing a drain trap relating to a further embodiment
- FIG. 7 is a section view along VII-VII line in FIG. 6 .
- FIG. 8 is a section view along VIII-VIII line in FIG. 6 .
- FIG. 9 is an exploded perspective view of a drain trap relating to a further embodiment.
- a drain trap X includes a main body portion 5 in the form of a bottomed cylinder having a lateral wall 51 on which a receiving pipe portion 2 for receiving liquid and a discharge pipe portion 3 for discharging the liquid are formed, a lid portion 6 for closing an inside space 4 of the main body portion 5 , and a partitioning body 1 for partitioning the inside space 4 into a reservoir space 7 for receiving liquid from the receiving pipe portion 2 and reserving this liquid therein and a discharge space 8 communicated to the discharge pipe portion 3 and discharging the liquid.
- the drain trap X includes also a sealing case 9 that surrounds, under a sealed state, at least a portion of the lateral wall 51 of the main body portion 5 and a bottom portion 52 of the main body portion 5 (“at least a portion of an outer surface of the main body portion 5 in which the reservoir space 7 is formed”).
- the lid portion 6 side may be sometimes referred to as “upper” side and the bottom portion 52 side may be sometimes referred to as “lower” side, respectively.
- the main body portion 5 is formed with using resin material and is formed like a cylinder having the bottom portion 52 in the form of a flat face.
- the receiving pipe portion 2 and the discharge pipe portion 3 are formed, as passages extending in the horizontal direction, integrally with the lateral wall 51 and are connected at opposed positions in the lateral wall 51 of the main body portion 5 .
- a connecting portion 2 A of the receiving pipe portion 2 and a connecting portion 3 A of the discharge pipe portion 3 are provided with a height difference therebetween in such a manner that the receiving pipe portion 2 is formed higher by a small predetermined amount (e.g. 5 mm) than the discharge pipe portion 3 .
- a small predetermined amount e.g. 5 mm
- a pipe axis direction Y of the receiving pipe portion 2 and a pipe axis direction Y of the discharge pipe portion 3 are shifted parallel with each other in the vertical direction as seen in the vertical section view (side view) shown in FIG. 1 , but are in agreement with each other when seen in the horizontal section view (plan view) shown in FIG. 2 .
- it is arranged such that fluid can flow smoothly from the receiving pipe portion 2 toward the discharge pipe portion 3 .
- a face oriented perpendicularly to the direction of connections of the receiving pipe portion 2 and the discharge pipe portion 3 forms a flat face 51 a (see FIGS. 4-5 ).
- an inclined step portion 51 b inclined from the upper side of the receiving pipe portion 2 toward the lower side of the discharge pipe portion 3 and the lid portion 6 side of the inclined step portion 51 b has a greater diameter than the bottom portion 52 side of this inclined step portion 51 b.
- the lid portion 6 has a circular shape as seen in the plan view and can be attached to the main body portion 5 through threading engagement of thread portions 18 formed in the outer circumferential face of the main body portion 5 and the inner circumferential face of the lid portion 6 , respectively (see FIG. 1 ). Further, in the outer circumference of the lid portion 6 , there are formed a plurality of protrusions 6 a arranged equidistantly and protruding radially outwards. By hooking a user's fingers on these protrusions 6 a , the user can readily attach the lid portion 6 to the main body portion 5 (see FIG. 4 ). This lid portion 6 is configured to be attachable/detachable when the sealing case 9 is attached to the main body portion 5 .
- a reflector body 23 (e.g. a reflector tape) is affixed along the entire circumference in its circumferential direction (see FIGS. 4-5 ).
- a reflector body 23 e.g. a reflector tape
- the reflector body 23 included in the drain trap X can be provided with red color
- members to be provided in the other routes may be provided with yellow color, so that different colors may be provided to the reflector bodies of the respective routes.
- the partitioning body 1 is constituted of a first partitioning portion 10 in the form of a cylinder and a second partitioning portion 11 in the form of a plate extending from the first partitioning portion 10 along the entire circumference in the circumferential direction toward the outer side.
- the first partitioning portion 10 includes a cutout portion 12 that is cut out vertically at a part in the circumferential direction in an area upwardly of the second partitioning portion 11 and a rectangular-shaped opening portion 13 (see FIG. 5 ). This opening portion 13 is disposed at a position opposed to the cutout portion 12 .
- the second partitioning portion 11 is provided with an inclination along the entire circumference of the first partitioning portion 10 such that a part of the cutout portion 12 in the vicinity of its lower end position is located at the lowest level and a part of the opening portion 13 in the vicinity of its center position is located at the uppermost level (see FIG. 1 ).
- the partitioning body 1 is attachable/detachable in the inside space 4 of the main body portion 5 , and when it is attached in this inside space 4 of the main body portion 5 , the partitioning body 1 partitions the inside space 4 of the main body portion in such a manner as to form the lower side of the inside space 4 of the main body portion 5 as a reservoir space 7 and to form the upper side of the inside space 4 as a discharge space 8 .
- the partitioning body 1 partitions the inside space 4 in the manner described above, the entire bottom portion 52 of the main body portion 5 is provided as the reservoir space 7 .
- the partitioning body 1 includes a valve body 15 in the form of a ball which floats for allowing communication of liquid from the reservoir space 7 to the discharge space 8 when liquid has been reserved by an amount exceeding a predetermined amount in the reservoir space 7 and a valve seat 16 for receiving and supporting the valve body 15 .
- the valve seat 16 is provided in the form of a ring disposed in the inside space of the first partitioning portion 10 .
- the valve body 15 is configured as a normally closed type for closing an aperture portion of the ring-shaped valve seat 16 .
- valve body 15 when liquid has been reserved by an amount exceeding a predetermined amount in the reservoir space 7 , the valve body 15 will float off the valve seat 16 , thus opening the valve, whereby the liquid will flow from the reservoir space 7 to the discharge space 8 to be discharged from the discharge pipe portion 3 .
- the valve body 15 when the amount of the liquid in the reservoir space 7 falls below a set amount, the valve body 15 will drop to be seated on the valve seat 16 , thus closing the valve.
- the inner circumferential face of the first partitioning portion 10 guides the floating and lowering movements of the valve body 15 in the vertical direction.
- the valve seat 16 is disposed in the partitioning body 1 such that this valve seat 16 may be located at a position lower than a lower end portion 3 a of the discharge pipe portion 3 when the partitioning body 1 is mounted in the inside space 4 of the main body portion 5 .
- a time lag (or time difference) from the floating of the valve body 15 off the valve seat 16 to the discharging of liquid from the discharge pipe portion 3 .
- This time lag is intended to suppress occurrence of noise by limiting repetition of floating movements of the valve body 15 off the valve seat 16 and the lowering movements of the valve body 15 onto the valve seat 16 in a short period of time, in case also when the liquid flowing from the receiving pipe portion 2 into the reservoir space 7 is very small in amount.
- the valve seat 16 is disposed on more upper side than the lower end portion of the first partitioning portion 10 in the vertical direction and the first partitioning portion 10 includes a pendant portion 10 a extending more downwards than the valve seat 16 .
- the reservoir space 7 is formed as a U-shaped passage which reverses (makes a turn) at the bottom portion 52 of the main body portion 5 , thus water-sealing the reservoir space 7 with the liquid reserved in the reservoir space 7 .
- the reservoir space 7 can always be water-sealed with the liquid reserved in the reservoir space 7 , whenever the valve body 15 floats off the valve seat 16 .
- a shield member 17 which is placed in gapless contact with the lid portion 6 and is provided with a reduced frictional coefficient relative to the partitioning body 1 .
- This shield member 17 is formed like a “disc” made of resin such as silicone. And, of this shield member 17 , its upper face contacting the lid portion 6 will come into gapless contact with the back face of the lid portion 6 by a suction-cup action. Further, of the shield member 17 , its lower face coming into contact with the partitioning body 1 mounted in the inside space 4 is provided with a slippery treatment to reduce the frictional coefficient between the lower face of the shield member 17 and the partitioning body 1 .
- the partitioning body 1 and the lateral wall 51 of the main body portion 5 respectively is provided with a sealing portion 14 configured to receive a vertical pressing force from the lid portion 6 in association with attachment of the lid portion 6 to the main body portion 5 and to place a part of the partitioning body 1 in gapless contact with the entire circumference of the lateral wall 51 , with application of a component force along the vertical direction.
- This sealing portion 14 includes a main body side sealing portion 14 a formed in the lateral wall 51 of the main body portion 5 and a partitioning body side sealing portion 14 b formed in the partitioning body 1 .
- the main body side sealing portion 14 a is a stepped portion that protrudes inwards from the lateral wall 51 and that is provided over the entire circumference of the lateral wall 51 . And, this step portion constituting the main body side sealing portion 14 a is provided with an inclination such that in the circumferential direction of the main body portion 5 , the vicinity of the upper end position of the receiving pipe portion 2 is located at the uppermost level and the vicinity of the lower end position of the discharge pipe portion 3 is located at the lowermost level.
- the partitioning body side sealing portion 14 b is an outer side end portion of the second partitioning portion 11 inclined over the entire circumference in the circumferential direction of the partitioning body 1 . And, the partitioning body side sealing portion 14 b is provided with a resin member 20 (e.g. elastomer resin) which clamps the partitioning body side sealing portion 14 b from the upper and lower sides thereof.
- a resin member 20 e.g. elastomer resin
- the lid portion 6 Under the state of the partitioning body 1 being mounted in the inside space 4 of the main body portion 5 , the lid portion 6 will be attached to the main body portion 5 through threading of the thread portion 18 with the shield member 17 interposed relative to the partitioning body 1 . In this, the lid portion 6 will press the partitioning body 1 downwards, whereby the main body side sealing portion 14 a and the partitioning body side sealing portion 14 b will receive pressing force to the lower side. Then, the main body side sealing portion 14 a and the partitioning body side sealing portion 14 b will seal with pressing the partitioning body side sealing portion 14 b against the main body side sealing portion 14 a by the above-described downward pressing force.
- a height adjusting member 21 for placing a portion 8 a of the discharge space 8 extending toward the discharge pipe portion 3 of the lateral wall 51 at a same height as the lower end portion 3 a of the discharge pipe portion 3 , when the partitioning body 1 is mounted in the inside space 4 .
- the step portion constituting the main body side sealing portion 14 a is located downwardly of the lower end portion 3 a of the discharge pipe portion 3 .
- the partitioning body 1 when the partitioning body 1 is mounted in the inside space 4 , the one portion 8 a of the discharge space 8 toward the discharge pipe portion 3 is located lower than the lower end portion 3 a of the discharge pipe portion 3 .
- this height adjusting member 21 reservation of liquid at a portion of the discharge space 8 toward the discharge pipe portion 3 is limited thereby, thus suppressing occurrence of corrosion of the liquid.
- the resin member 20 provided in the partitioning body side sealing portion 14 b is utilized to function also as the height adjusting member 21 .
- the partitioning body 1 is provided with leg portions 19 which protrudes downwards from the inside space 4 when the partitioning body 1 is attached in this inside space 4 .
- a plurality of such leg portions 19 are arranged equidistantly in the circumferential direction of the first partitioning portion 10 .
- the main body portion 5 and the partitioning body 1 are made transparent, and the valve body 15 is provided with a color (e.g. blue color) which can be distinguished from the main body portion 5 and the partitioning body 1 .
- a color e.g. blue color
- a worker can visually recognize the position of the valve body 15 from outside of the main body portion 5 . Accordingly, it is readily possible to check whether the partitioning body 1 has been mounted at an appropriate position or not and also to check a degree of soiling if any of the partitioning body 1 .
- the language “transparent” refers to a condition of the inside of the main body portion 5 being visible therethrough, thus, the language being inclusive of being colorless transparent as well as colored transparent, and even being semi-transparent also.
- the sealing case 9 is mounted on the outer side of the main body portion 5 and is formed of a same transparent resin material as this main body portion 5 .
- the sealing case 9 surrounds, in a sealed state, the lateral wall 51 of the main body portion 5 in the entire area thereof and bottom portion 52 of the main body portion 5 ; and between the sealing case 9 and the main body portion 5 , an air gap 91 is formed.
- the connecting portion 2 A between the lateral wall 51 and the receiving pipe portion 2 and the connecting portion 3 A between the lateral wall 51 and the discharge pipe portion 3 are covered by the sealing case 9 , with the air gaps 91 being formed relative to the sealing case 9 .
- Liquid tends to accumulate and stay at the connecting portions 2 A, 3 A between the receiving pipe portion 2 or the discharge pipe portion 3 and the lateral wall 51 .
- the air gaps 91 are formed between these respective contacting portions 2 A, 3 A and the sealing case 9 as provided in the above-described arrangement, condensation occurring on the surfaces of the receiving pipe portion 2 and the discharge pipe portion 3 can be prevented in a reliable manner.
- the sealing case 9 is formed of same transparent resin material as the main body portion 5 , transmittances of the sealing case 9 and the main body portion 5 are same, and also air is present between the sealing case 9 and the main body portion 5 as described above.
- a worker can readily recognize the position of the valve body 15 from outside the main body portion 5 .
- soiling or clogging has occurred in the drain trap X installed in a drain piping of an air conditioner, this is a situation where a drain pan inside the air conditioner is soiled. If such soiling inside the air condition is left un-attended, the drain pan will be eventually blocked, thus causing water leakage from the air conditioner body.
- the sealing case 9 includes a plurality (“two” in this embodiment) of split bodies 92 split from each other, a cup-like bottom portion side connecting member 93 (an example of a “first connecting member”) for connecting the pair of split bodies 92 from the bottom portion 52 side (reservoir space 7 side) and an annular cylindrical lid portion side connecting member 94 (an example of a “second connecting member”) for connecting the pair of split bodies 92 from the lid portion 6 side (the opposite side to the bottom portion side connecting member 93 ) (see FIGS. 4-5 ).
- the split bodies 92 consist of a first split body 92 A and a second split body 92 B. These first and second split bodies 92 A, 92 B are formed symmetric relative to a pipe axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3 (see FIG. 2 ). Namely, these first and second split bodies 92 A, 92 b are formed like “split halves” to be connected with each other from the lateral side of the main body portion 5 . As shown in FIG.
- the first split body 92 A and the second split body 92 B each includes a flat bonding face 92 a extending along the pipe axis direction Y, a first gapless contact face 92 b having an arcuate shape and placed in gapless contact with the outer circumferential face of the receiving pipe portion 2 , and a second gapless contact face 92 c having an arcuate shape and placed in gapless contact with the outer circumferential face of the discharge pipe portion 3 .
- a receded portion 92 a 1 and a protruding portion 92 a 2 are formed along the bonding face 92 a , so that with engagement between these receded and protruding portions 92 a 1 , 92 ab , the split bodies 92 are assembled to each other. Also, the engagement between these receded and protruding portions 92 a 1 , 92 ab forms a labyrinth structure that serves to prevent leakage of the air in the air gaps 91 to the outside.
- the gapless attachment of the first gapless contact face 92 b and the second gapless contact face 92 c to the outer circumferential faces of the receiving pipe portion 2 and the discharge pipe portion 3 respectively also serves to prevent leak of air in the air gaps 91 to the outside.
- a flat face 92 e is formed continuously therewith, and the cross sectional shape of the split bodies 92 is formed as a circular shape having a pair of straight side portions in opposition to each other.
- the cross sectional shape of the split bodies 92 is formed as a circular shape having a pair of straight side portions in opposition to each other.
- an engaging receded portion 92 f 1 with which an engaging protrusion 93 a of the bottom portion side connecting member 93 comes into engagement.
- the bottom portion of the split body 92 has a cross sectional shape in the form of a circle having a pair of opposed straight side portions, rotation of the bottom portion side connecting member 93 engaged with the engaging stepped portion 92 f is prevented.
- annular sealing face 92 g which protrudes annularly toward the radial inner direction.
- annular sealing face 92 g and the outer face of the main body portion 5 come into gapless contact with each other, leakage of air in the air gaps 91 to the outside is prevented.
- engaging receded portion 92 h into which a first engaging protrusion 94 a of the lid portion side connecting member 94 comes into engagement.
- the bottom portion side connecting member 93 is formed like a cup having a bottom wall 93 A and a lateral wall 93 B protruding annularly from the outer circumference of the bottom wall 93 A.
- the lateral wall 93 B has a shape extending along the lateral face shape of the bottom portion of the split body 92 .
- the engaging protrusion 93 a formed in the lateral wall 93 B is engaged in the engaging receded portions 92 f 1 of the split bodies 92 , with forming a gap 95 between the bottom portions of the split bodies 92 and the bottom wall 93 A.
- This gap 95 is filled with air, like the air gap 91 described above.
- the lid portion side connecting member 94 has a circular annular shape having an annular flange portion 94 A whose inside diameter is greater than the outside diameter of the main body portion 5 and an erect portion 94 B erected on the bottom portion 52 side from the outer circumference of the flange portion 94 A.
- the flange portion 94 A has its lower face (inner face) placed in contact with the upper face of the split body 92 .
- first engaging protrusion 94 a which comes into engagement with an engaging receded portion 92 h of the split body 92 and on its leading end side, there is formed a second engaging protrusion 94 b which comes into engagement with the upper end of the flat face 92 e of the split body 92 .
- the air gap 91 is formed between the sealing case 9 which surrounds the entire area of the lateral wall 51 and the bottom portion 52 of the main body portion 5 and this main body portion 5 , even when a temperature difference exists between the liquid reserved in the reservoir space 7 on the bottom portion 52 side of the main body portion 5 and the ambient air, occurrence of condensation can be effectively suppressed by this air gap 91 . As a result, such inconvenience as dripping of water droplets, thus immersing its surrounding in water can be prevented.
- the bottom portion 52 side of the main body portion 5 is provided as the liquid reservoir space 7 , with provision of the gap 95 formed between the bot tom portion of the split body 92 and the bottom wall 93 A of the bottom portion side connecting member 93 as provided in the instant embodiment, heat retention effect will be improved with the air gap 91 and the gap 95 , whereby freezing of the liquid can be prevented.
- the sealing case 9 in the instant embodiment since this sealing case 9 forms an integral unit with continuous outer appearance with the main body portion 5 , there are provided superior aesthetic appearance and high durability, so the drain trap X can be used for an extended period of time.
- the sealing case 9 can be attached from the lateral sides of the receiving pipe portion 2 and the discharge pipe portion 3 , so that attachment can be carried out easily. Further, when the air gap 91 is formed between the sealing case 9 and the main body portion 5 , the bottom portion side connecting member 93 and the lid portion side connecting member 94 are provided on the bottom portion and the lid portion side respectively, the manufacture of the drain trap X can be significantly facilitated.
- FIGS. 6 through 9 show a drain trap X relating to a further embodiment.
- same names and signs will be used for the same members, and only different arrangements will be explained.
- the arc-shaped first gapless contact face 92 b to be placed in gapless contact with the outer circumferential face of the receiving pipe portion 2 and the arc-shaped second gapless contact face 92 c to be placed in gapless contact with the outer circumferential face of the discharge pipe portion 3 are gaplessly attached to intermediate portions of the receiving pipe portion 2 and the discharge pipe portion 3 along the pipe axis direction Y, respectively.
- the form (type) of engagement between the split body 92 and the lid portion side connecting member 94 is made different.
- engaging receded portions 92 i are provided in the outer faces at the upper ends of the first split body 92 A and the second split body 92 B and an engaging protrusion 94 c is provided on the base end side of the erect portion 94 B of the lid portion side connecting member 94 . Then, as the engaging receded portions 92 i and the engaging protrusion 94 c are engaged with each other, the lid portion side connecting member 94 is fixed to the split bodies 92 (see FIGS. 8-9 ).
- the second engaging protrusion 94 b engageable with the upper end of the flat face 92 e of the split body 92 is not provided on the leading end side of the erect portion 94 B.
- the lid portion 6 presses down the lid portion side connecting member 94 , so this lid portion side connecting portion 94 can be firmly fixed to the split bodies 92 .
- the form (type) of engagement between the split body 92 and the bottom portion side connecting member 93 is made different.
- the engaging protrusion 93 a of the bottom portion side connecting member 93 in the foregoing embodiment is replaced by an engaging receded portion 93 a 1 and the engaging receded portion 92 f 1 of the split body 92 is replaced by an engaging protrusion 92 f 2 .
- a heat insulating sheet may be attached in the gap 95 formed between the bottom portion of the split body 92 and the bottom wall 93 A of the bottom portion side connecting member 93 .
- This heat insulating sheet is constituted of a heat insulating material such as aluminum or the like or a laminated material with aluminum coated on the surface of the laminated resin layer. Since the bottom portion 52 side of the main body portion 5 is provided as the reservoir space 7 , if such heat insulating sheet is provided on the bottom portion side connecting member 93 which is to be disposed on the bottom portion 52 side of the main body portion 5 , freezing of liquid inside the reservoir space 7 can be prevented. Moreover, in case such heat insulating sheet is disposed on the bottom portion 52 side of the main body portion 5 , this will not interfere with the visibility of the inside space 4 of the main body portion 5 .
- a desiccant material may be disposed in place of or in addition to the heat insulating sheet to be attached in the gap 95 .
- condensation inside the gap 95 can be prevented.
- the heat conduction rate will be lowered, thus enhancing the condensation preventive effect.
- the sealing case 9 may be provided only at the reservoir space 7 portion. Namely, the sealing case 9 may be provided in opposition to the lower side in the lateral wall 51 of the main body portion 5 than the inclined step portion 51 b . Also, the sealing case 9 may be provided in opposition to the lower side in the lateral wall 51 of the main body portion 5 than the receiving pipe portion 2 and the discharge pipe portion 3 , there is no limitation in this regard.
- the split bodies 92 of the sealing case 9 were formed symmetric relative to the pipe axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3 . Instead, the split body 92 of the sealing case 9 may be split into two in the vertical direction.
- Seal members may be provided on the bonding face 92 a and the gapless contact faces 92 b , 92 c.
- the air gap 91 and the gap 95 may be evacuated.
- the lid portion 6 may be omitted, so that the partitioning body 1 may be configured to be no-attachable/non-detachable.
- the lid portion 6 was configured to be attachable to the main body portion 5 through threading engagement of the thread portions 18 .
- this may be configured as an engaging type in which the lid portion 6 can be attached to the main body portion 5 by pressing this lid portion 6 into the main body portion 5 to be engaged therewith.
- various modifications will be possible in the respect of how the lid portion 6 is to be attached to the main body portion 5 .
- the bottom portion of the main body portion 5 was formed like a flat face, thus forming the entire bottom portion of the main body portion 5 as the reservoir space 7 .
- the entire bottom portion of the main body portion 5 may be provided as the reservoir space 7 with various modifications made in the shape of the bottom portion of the main body portion 5 such as forming a step in the bottom portion of the main body portion 5 .
- the shape of the lateral wall 51 of the main body portion 5 and the shape of the partitioning body 1 were formed approximately oval as seen in the plan view. Alternatively, they may be formed rectangular or the like, so various modifications can be made for providing the shapes.
- valve body 15 In the foregoing embodiment, a ball type body was employed as an example of the valve body 15 . Instead, this valve body 15 may be provided in the form of a plate-like body pivotable about a horizontal axis. In this way, various modifications are possible in regard of how the valve body 15 is to be shaped.
- the present invention is applicable to a drain trap including a cylindrical main body having an inside space communicated to a receiving pipe portion and a discharge pipe portion and a partitioning body that partitions the inside space of the main body into a reservoir space and a discharge space.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structural Engineering (AREA)
- Sink And Installation For Waste Water (AREA)
- Thin Film Transistor (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
Description
- This disclosure relates to a drain trap installed in the course of a drainage route.
- A drain trap is installed in the course of a drainage route for discharging liquid from a drain water of an air conditioner etc. into a sewage ditch. Conventionally, there is known a drain trap including a main body portion in the form of a bottomed cylinder having a lateral wall on which a receiving pipe portion for receiving liquid and a discharge pipe portion for discharging the liquid are formed, an attachable/detachable lid portion for closing the inside space of the main body portion, and an attachable/detachable partitioning body for partitioning the inside space into a reservoir space communicated to the receiving pipe portion and reserving liquid therein and a discharge space communicated to the discharge pipe portion and discharging liquid (see Patent Document 1).
- With the drain trap disclosed in
Patent Document 1, the partitioning body provides non-communication between the reservoir space and the discharge space, so that in combination with water sealing effect provided by the liquid reserved in the reservoir space, reverse flow of contaminated air, odor etc. is prevented. With this drain trap, if the inner face of the main body portion and/or the partitioning member becomes soiled by the liquid reserved in the reservoir space, cleaning thereof is facilitated by the attachable/detachable features of the lid portion and the partitioning member. - On the other hand, in the drain trap used in e.g. a high-temperature, high-humidity place or the like, condensation tends to occur on the outer face of the main body portion due to a temperature difference between the ambient air and the liquid reserved in the reservoir space. With occurrence of condensation, there occurs such inconvenience as dripping of water droplets, thus immersing its surrounding in water. Further, there occurs a further inconvenience of freezing and expansion of the liquid reserved in the reservoir space by ambient air of extremely low temperature, which can cause damage to the drain trap.
- Patent Documents 2-3 disclose techniques for preventing occurrence of condensation in a drain trap or freezing of liquid in a reservoir space. A drain trap disclosed in
Patent Document 2 is configured to prevent occurrence of condensation by coating an outer surface of metal portion with urethane foam layer. A drain trap disclosed inPatent Document 3 is configured to prevent damage to the drain trap due to freezing of liquid in the reservoir space by coating an outer lateral face thereof except for its bottom face with a thermal insulator material made of foamed resin. - Further, Patent Documents 4-6 disclose pipe drain traps having no partitioning member.
Patent Document 4 discloses a thermal insulating cap to be gaplessly attached to a main body of a pipe drain trap and an outlet side connecting opening. To a bath-tub side branch pipe of this U-shaped pipe drain trap, a thermal insulating material is attached separately from or in addition to the thermal insulating cap. And, a door lower side connecting opening and a reheating side connecting opening of the U-shaped pipe drain trap are exposed from the thermal insulating cap and firmly engaged with the lid member. -
Patent Document 5 discloses an inner body through which cold water from a water discharge opening flows, an odor-preventing lid body that closes an opening of an inner pipe of a bottom portion of the inner body, and an outer body having a bottom portion where the discharge pipe is formed and configured to cover the inner body with forming a gap with the outer surface of the inner body. Inside the inner body, drainage water is reserved and when it has been reserved to a predetermined amount, it will be discharged into a discharge pipe via the gap between the lid body and the inner pipe. -
Patent Document 6 discloses a U-shaped pipe drain trap having a main body portion having its outlet portion connected with a union nut. This U-shaped pipe drain trap is covered entirely with a cover. And, it is described that the cover is made non-transparent preferably in case the plumbing drain trap is made transparent. -
- Patent Document 1: Publication Document of Unexamined International Patent Application No. 2007/116531
- Patent Document 2: Publication Document of Unexamined Japanese Utility Model Application No. S53-9761
- Patent Document 3: Publication Document of Unexamined Japanese Utility Model Application No. H2-106087
- Patent Document 4: Publication Document of Unexamined Japanese Patent Application No. 2002-322706
- Patent Document 5: Publication Document of Japanese Utility Model Application No. S53-29549
- Patent Document 6: Publication Document of Unexamined Japanese Patent Application No. H10-82085
- In the case of the drain traps disclosed in Patent Document 2-3, the outer surface of the drain trap is covered with resin foam. Thus, if a detachable partitioning body were provided therein like the drain trap disclosed in
Patent Document 1, this would inhibit visual recognition of the inside of the main body portion. Further, in the case also with the drain traps having no partitioning body or having a non-detachable partitioning body such as the pipe drain traps disclosed in Patent Documents 4-6, such outer surface coating with foamed resin, if provided, would inhibit visual recognition of the inside of the drain trap. Therefore, there exists a problem in the respect of maintenance since, confirmation of soiled condition of the inner surface of the main body portion and the partitioning member would be not possible. Further, in the case of coating the entire outer surface of the drain trap with the cover as disclosed inPatent Document 6, its maintenance requires detachment of the entire cover, so that the heat insulating performance cannot be achieved. Moreover, as the durability of the foamed resin is poor, the foamed resin may be damaged under severe use environment, so that its desired heat insulating performance may not be achieved. - Thus, there is a need for a drain trap that allows easy maintenance, yet has high durability with ability to prevent condensation.
- According to a characterizing feature of a drain trap relating to this disclosure, the drain trap comprises:
- a cylindrical main body portion having a lateral wall on which a receiving pipe portion receiving liquid and a discharge pipe portion discharging the liquid are formed;
- an attachable/detachable partitioning body partitioning an inside space of the main body portion into a reservoir space communicated to the receiving pipe portion and reserving liquid therein and a discharge space communicated to the discharge pipe portion and discharging the liquid;
- a lid portion closing the inside space of the main body portion; and
- a sealing case surrounding, under a sealed state, at least a portion of an outer surface of the main body portion in which the reservoir space is formed;
- an air gap being formed between the sealing case and the main body portion;
- the sealing case and the main body portion being formed transparent; and
- the lid portion being attachable/detachable when the sealing case is attached to the main body portion.
- According to this configuration, a gap is formed between the sealing case surrounding, under a sealed state, at least a portion of an outer surface of the main body portion in which the reservoir space is formed and the main body portion. Thus, even when there is a temperature difference between the liquid reserved in the reservoir space of the main body portion and the ambient air, occurrence of condensation can be suppressed by this gap. As a result, such inconvenience as dripping of water droplets, thus immersing its surrounding in water can be prevented. Moreover, since such sealing case can be unified with the main body portion, in comparison with the conventionally employed foamed resin, the inventive configuration provides superior aesthetic appearance as well as higher durability. So that, the drain trap can be put into use for an extended period of time.
- Further, if both the sealing case and the main body portion are formed transparent as provided in the above-described inventive configuration, the visibility of the inside space of the main body portion is enhanced, so that visual recognition of a degree of soiling developed on the inner surface of the main body portion and the partitioning body is made possible. Moreover, if the lid portion is configured to be attachable/detachable when the sealing case is attached to the main body portion, with detachment of the lid portion with prevention of condensation, cleaning of the attachable/detachable partitioning body, etc. is made possible, so the maintenance can be made extremely easily. Incidentally, when soiling or clogging occurs in the drain trap which is installed in a drain piping of an air conditioner, this is a condition in which a drain pan inside the air conditioner is soiled. So, if such soiling inside the air conditioner is left unattended, the drain pan will be clogged eventually, thus leading to water leak from the air conditioner body. However, checking of the soiling degree of the drain pan requires a great trouble as disassembly of the air conditioner installed in e.g. a ceiling is needed therefor. On the other hand, if both the sealing case and the main body portion are formed transparent as provided in the above-described inventive configuration, the soiling degree of the drain trap can be readily checked by visual recognition, so that need or no-need of cleaning of the drain pan of the air conditioner body can be made. Therefore, water leak due to negligence of drain pain cleaning can be prevented. In this way, a drain trap that allows easy maintenance, yet has high durability with ability to prevent condensation has been realized.
- According to a further characterizing feature, a connecting portion between the lateral wall and the receiving pipe portion and a connecting portion between the lateral wall and the discharge pipe portion are covered by the sealing case, with air gaps being formed relative to the sealing case.
- Liquid tends to be accumulated and stay at the connecting portions between the lateral wall and the receiving/discharging pipe portions. Therefore, when air gaps are formed between these respective connecting portions and the sealing case as provided in the above-described arrangement, condensation which may be formed on the surfaces of the receiving pipe portion and the discharge pipe portion can be prevented in a reliable manner.
- According to a still further characterizing feature, the sealing case is constituted of a plurality of split bodies split from each other.
- If the sealing case is constituted of split bodies as provided in the above-described arrangement, even in the case of a drain trap having a complicated shape having the receiving pipe portion and the discharge pipe portion being formed in the main body portion, the sealing case can be readily attached to the main body portion.
-
FIG. 1 is a vertical section view of a drain trap, -
FIG. 2 is a section view along II-II line inFIG. 1 , -
FIG. 3 is a section view along III-III line inFIG. 1 , -
FIG. 4 is an outer appearance perspective view of the drain trap, -
FIG. 5 is an exploded perspective view of the drain trap, -
FIG. 6 is a vertical section view showing a drain trap relating to a further embodiment, -
FIG. 7 is a section view along VII-VII line inFIG. 6 , -
FIG. 8 is a section view along VIII-VIII line inFIG. 6 , and -
FIG. 9 is an exploded perspective view of a drain trap relating to a further embodiment. - Next, an embodiment of a drain trap relating to this disclosure will be explained with reference to the accompanying drawings. It is understood however that the invention is not limited to following embodiments, but various modifications thereof are possible within a range not departing from the essence thereof.
- As shown in
FIGS. 1 through 5 , a drain trap X includes amain body portion 5 in the form of a bottomed cylinder having alateral wall 51 on which a receivingpipe portion 2 for receiving liquid and adischarge pipe portion 3 for discharging the liquid are formed, alid portion 6 for closing aninside space 4 of themain body portion 5, and apartitioning body 1 for partitioning theinside space 4 into areservoir space 7 for receiving liquid from the receivingpipe portion 2 and reserving this liquid therein and adischarge space 8 communicated to thedischarge pipe portion 3 and discharging the liquid. Further, the drain trap X includes also a sealingcase 9 that surrounds, under a sealed state, at least a portion of thelateral wall 51 of themain body portion 5 and abottom portion 52 of the main body portion 5 (“at least a portion of an outer surface of themain body portion 5 in which thereservoir space 7 is formed”). In the following discussion, thelid portion 6 side may be sometimes referred to as “upper” side and thebottom portion 52 side may be sometimes referred to as “lower” side, respectively. - The
main body portion 5 is formed with using resin material and is formed like a cylinder having thebottom portion 52 in the form of a flat face. The receivingpipe portion 2 and thedischarge pipe portion 3 are formed, as passages extending in the horizontal direction, integrally with thelateral wall 51 and are connected at opposed positions in thelateral wall 51 of themain body portion 5. And, a connectingportion 2A of the receivingpipe portion 2 and a connectingportion 3A of thedischarge pipe portion 3 are provided with a height difference therebetween in such a manner that the receivingpipe portion 2 is formed higher by a small predetermined amount (e.g. 5 mm) than thedischarge pipe portion 3. A pipe axis direction Y of the receivingpipe portion 2 and a pipe axis direction Y of thedischarge pipe portion 3 are shifted parallel with each other in the vertical direction as seen in the vertical section view (side view) shown inFIG. 1 , but are in agreement with each other when seen in the horizontal section view (plan view) shown inFIG. 2 . With provision of the above-described height difference between the receivingpipe portion 2 and thedischarge pipe portion 3, it is arranged such that fluid can flow smoothly from the receivingpipe portion 2 toward thedischarge pipe portion 3. - Of the outer surface of the
lateral wall 51 of themain body portion 5, a face oriented perpendicularly to the direction of connections of the receivingpipe portion 2 and thedischarge pipe portion 3 forms aflat face 51 a (seeFIGS. 4-5 ). Further, in the outer surface of thelateral wall 51, there is provided aninclined step portion 51 b inclined from the upper side of the receivingpipe portion 2 toward the lower side of thedischarge pipe portion 3, and thelid portion 6 side of theinclined step portion 51 b has a greater diameter than thebottom portion 52 side of thisinclined step portion 51 b. - The
lid portion 6 has a circular shape as seen in the plan view and can be attached to themain body portion 5 through threading engagement ofthread portions 18 formed in the outer circumferential face of themain body portion 5 and the inner circumferential face of thelid portion 6, respectively (seeFIG. 1 ). Further, in the outer circumference of thelid portion 6, there are formed a plurality ofprotrusions 6 a arranged equidistantly and protruding radially outwards. By hooking a user's fingers on theseprotrusions 6 a, the user can readily attach thelid portion 6 to the main body portion 5 (seeFIG. 4 ). Thislid portion 6 is configured to be attachable/detachable when the sealingcase 9 is attached to themain body portion 5. - Further, on the outer side of the
lid portion 6, a reflector body 23 (e.g. a reflector tape) is affixed along the entire circumference in its circumferential direction (seeFIGS. 4-5 ). With this, in case the drain trap X is installed in a ceiling, a worker can readily recognize the installed position of the drain trap X by irradiating a light beam onto thereflector body 23. Aside from a drainage route in which the drain trap X is installed, a various kinds of other routes may be provided. In such case, e.g. thereflector body 23 included in the drain trap X can be provided with red color, whereas members to be provided in the other routes may be provided with yellow color, so that different colors may be provided to the reflector bodies of the respective routes. - The
partitioning body 1 is constituted of afirst partitioning portion 10 in the form of a cylinder and asecond partitioning portion 11 in the form of a plate extending from thefirst partitioning portion 10 along the entire circumference in the circumferential direction toward the outer side. Thefirst partitioning portion 10 includes acutout portion 12 that is cut out vertically at a part in the circumferential direction in an area upwardly of thesecond partitioning portion 11 and a rectangular-shaped opening portion 13 (seeFIG. 5 ). This openingportion 13 is disposed at a position opposed to thecutout portion 12. Thesecond partitioning portion 11 is provided with an inclination along the entire circumference of thefirst partitioning portion 10 such that a part of thecutout portion 12 in the vicinity of its lower end position is located at the lowest level and a part of the openingportion 13 in the vicinity of its center position is located at the uppermost level (seeFIG. 1 ). - The
partitioning body 1 is attachable/detachable in theinside space 4 of themain body portion 5, and when it is attached in thisinside space 4 of themain body portion 5, thepartitioning body 1 partitions theinside space 4 of the main body portion in such a manner as to form the lower side of theinside space 4 of themain body portion 5 as areservoir space 7 and to form the upper side of theinside space 4 as adischarge space 8. As thepartitioning body 1 partitions theinside space 4 in the manner described above, theentire bottom portion 52 of themain body portion 5 is provided as thereservoir space 7. Further, thepartitioning body 1 includes avalve body 15 in the form of a ball which floats for allowing communication of liquid from thereservoir space 7 to thedischarge space 8 when liquid has been reserved by an amount exceeding a predetermined amount in thereservoir space 7 and avalve seat 16 for receiving and supporting thevalve body 15. Thevalve seat 16 is provided in the form of a ring disposed in the inside space of thefirst partitioning portion 10. Thevalve body 15 is configured as a normally closed type for closing an aperture portion of the ring-shapedvalve seat 16. - As indicated by two-dotted lines in
FIG. 1 , when liquid has been reserved by an amount exceeding a predetermined amount in thereservoir space 7, thevalve body 15 will float off thevalve seat 16, thus opening the valve, whereby the liquid will flow from thereservoir space 7 to thedischarge space 8 to be discharged from thedischarge pipe portion 3. Whereas, when the amount of the liquid in thereservoir space 7 falls below a set amount, thevalve body 15 will drop to be seated on thevalve seat 16, thus closing the valve. In the course of this action, the inner circumferential face of thefirst partitioning portion 10 guides the floating and lowering movements of thevalve body 15 in the vertical direction. - The
valve seat 16 is disposed in thepartitioning body 1 such that thisvalve seat 16 may be located at a position lower than alower end portion 3 a of thedischarge pipe portion 3 when thepartitioning body 1 is mounted in theinside space 4 of themain body portion 5. Namely, there is provided a time lag (or time difference) from the floating of thevalve body 15 off thevalve seat 16 to the discharging of liquid from thedischarge pipe portion 3. This time lag is intended to suppress occurrence of noise by limiting repetition of floating movements of thevalve body 15 off thevalve seat 16 and the lowering movements of thevalve body 15 onto thevalve seat 16 in a short period of time, in case also when the liquid flowing from the receivingpipe portion 2 into thereservoir space 7 is very small in amount. - Further, the
valve seat 16 is disposed on more upper side than the lower end portion of thefirst partitioning portion 10 in the vertical direction and thefirst partitioning portion 10 includes apendant portion 10 a extending more downwards than thevalve seat 16. With this provision of thependant portion 10 a, thereservoir space 7 is formed as a U-shaped passage which reverses (makes a turn) at thebottom portion 52 of themain body portion 5, thus water-sealing thereservoir space 7 with the liquid reserved in thereservoir space 7. Further, as thereservoir space 7 is provided on thebottom portion 52 side of themain body portion 5, thereservoir space 7 can always be water-sealed with the liquid reserved in thereservoir space 7, whenever thevalve body 15 floats off thevalve seat 16. - Between the
lid portion 6 and thepartitioning body 1 mounted in theinside space 4, there is provided ashield member 17 which is placed in gapless contact with thelid portion 6 and is provided with a reduced frictional coefficient relative to thepartitioning body 1. Thisshield member 17 is formed like a “disc” made of resin such as silicone. And, of thisshield member 17, its upper face contacting thelid portion 6 will come into gapless contact with the back face of thelid portion 6 by a suction-cup action. Further, of theshield member 17, its lower face coming into contact with thepartitioning body 1 mounted in theinside space 4 is provided with a slippery treatment to reduce the frictional coefficient between the lower face of theshield member 17 and thepartitioning body 1. - The
partitioning body 1 and thelateral wall 51 of themain body portion 5 respectively is provided with a sealingportion 14 configured to receive a vertical pressing force from thelid portion 6 in association with attachment of thelid portion 6 to themain body portion 5 and to place a part of thepartitioning body 1 in gapless contact with the entire circumference of thelateral wall 51, with application of a component force along the vertical direction. This sealingportion 14 includes a main bodyside sealing portion 14 a formed in thelateral wall 51 of themain body portion 5 and a partitioning bodyside sealing portion 14 b formed in thepartitioning body 1. - The main body
side sealing portion 14 a is a stepped portion that protrudes inwards from thelateral wall 51 and that is provided over the entire circumference of thelateral wall 51. And, this step portion constituting the main bodyside sealing portion 14 a is provided with an inclination such that in the circumferential direction of themain body portion 5, the vicinity of the upper end position of the receivingpipe portion 2 is located at the uppermost level and the vicinity of the lower end position of thedischarge pipe portion 3 is located at the lowermost level. The partitioning bodyside sealing portion 14 b is an outer side end portion of thesecond partitioning portion 11 inclined over the entire circumference in the circumferential direction of thepartitioning body 1. And, the partitioning bodyside sealing portion 14 b is provided with a resin member 20 (e.g. elastomer resin) which clamps the partitioning bodyside sealing portion 14 b from the upper and lower sides thereof. - Under the state of the
partitioning body 1 being mounted in theinside space 4 of themain body portion 5, thelid portion 6 will be attached to themain body portion 5 through threading of thethread portion 18 with theshield member 17 interposed relative to thepartitioning body 1. In this, thelid portion 6 will press thepartitioning body 1 downwards, whereby the main bodyside sealing portion 14 a and the partitioning bodyside sealing portion 14 b will receive pressing force to the lower side. Then, the main bodyside sealing portion 14 a and the partitioning bodyside sealing portion 14 b will seal with pressing the partitioning bodyside sealing portion 14 b against the main bodyside sealing portion 14 a by the above-described downward pressing force. In this way, by gaplessly attaching the partitioning bodyside sealing portion 14 b and the main bodyside sealing portion 14 a to each other over the entire circumference of the inner face of thelateral wall 51 of themain body portion 5, thereservoir space 7 and thedischarge space 8 are shielded from each other. - On the
resin member 20 of the partitioning bodyside sealing portion 14 b, there is provided aheight adjusting member 21 for placing aportion 8 a of thedischarge space 8 extending toward thedischarge pipe portion 3 of thelateral wall 51 at a same height as thelower end portion 3 a of thedischarge pipe portion 3, when thepartitioning body 1 is mounted in theinside space 4. At a position corresponding to thedischarge pipe portion 3 in the circumferential direction of thelateral wall 51 of themain body portion 5, the step portion constituting the main bodyside sealing portion 14 a is located downwardly of thelower end portion 3 a of thedischarge pipe portion 3. Thus, when thepartitioning body 1 is mounted in theinside space 4, the oneportion 8 a of thedischarge space 8 toward thedischarge pipe portion 3 is located lower than thelower end portion 3 a of thedischarge pipe portion 3. Here, by forming thisheight adjusting member 21, reservation of liquid at a portion of thedischarge space 8 toward thedischarge pipe portion 3 is limited thereby, thus suppressing occurrence of corrosion of the liquid. Further, theresin member 20 provided in the partitioning bodyside sealing portion 14 b is utilized to function also as theheight adjusting member 21. - The
partitioning body 1, as shown inFIG. 5 , is provided withleg portions 19 which protrudes downwards from theinside space 4 when thepartitioning body 1 is attached in thisinside space 4. A plurality ofsuch leg portions 19 are arranged equidistantly in the circumferential direction of thefirst partitioning portion 10. With this arrangement, when thepartitioning body 1 under its vertically reversed state is inserted into the inside space, theleg portions 19 will protrude upwards from theinside space 4, thus inhibiting attachment of thelid portion 6 to themain body portion 5 under this condition. In this way, when thepartitioning body 1 is to be inserted into theinside space 4, error in the vertical orientation of thepartitioning body 1 is prevented. - The
main body portion 5 and thepartitioning body 1 are made transparent, and thevalve body 15 is provided with a color (e.g. blue color) which can be distinguished from themain body portion 5 and thepartitioning body 1. With this arrangement, under the condition of thepartitioning body 1 being mounted in theinside space 4 of themain body portion 5, a worker can visually recognize the position of thevalve body 15 from outside of themain body portion 5. Accordingly, it is readily possible to check whether thepartitioning body 1 has been mounted at an appropriate position or not and also to check a degree of soiling if any of thepartitioning body 1. Here, the language “transparent” refers to a condition of the inside of themain body portion 5 being visible therethrough, thus, the language being inclusive of being colorless transparent as well as colored transparent, and even being semi-transparent also. - As shown in
FIG. 1 , the sealingcase 9 is mounted on the outer side of themain body portion 5 and is formed of a same transparent resin material as thismain body portion 5. The sealingcase 9 surrounds, in a sealed state, thelateral wall 51 of themain body portion 5 in the entire area thereof andbottom portion 52 of themain body portion 5; and between the sealingcase 9 and themain body portion 5, anair gap 91 is formed. With this arrangement, even when there exists a temperature difference between the liquid reserved in thereservoir space 7 on thebottom portion 52 side of themain body portion 5 and the ambient air, occurrence of condensation can be effectively suppressed by theair gap 91. Further, the connectingportion 2A between thelateral wall 51 and the receivingpipe portion 2 and the connectingportion 3A between thelateral wall 51 and thedischarge pipe portion 3 are covered by the sealingcase 9, with theair gaps 91 being formed relative to the sealingcase 9. Liquid tends to accumulate and stay at the connectingportions pipe portion 2 or thedischarge pipe portion 3 and thelateral wall 51. Then, if theair gaps 91 are formed between these respective contactingportions case 9 as provided in the above-described arrangement, condensation occurring on the surfaces of the receivingpipe portion 2 and thedischarge pipe portion 3 can be prevented in a reliable manner. - In this way, as the sealing
case 9 is formed of same transparent resin material as themain body portion 5, transmittances of the sealingcase 9 and themain body portion 5 are same, and also air is present between the sealingcase 9 and themain body portion 5 as described above. Thus, a worker can readily recognize the position of thevalve body 15 from outside themain body portion 5. Meanwhile, when soiling or clogging has occurred in the drain trap X installed in a drain piping of an air conditioner, this is a situation where a drain pan inside the air conditioner is soiled. If such soiling inside the air condition is left un-attended, the drain pan will be eventually blocked, thus causing water leakage from the air conditioner body. However, in order to check the soiling degree of such drain pan, disassembly of the air conditioner installed in a ceiling, etc. will be required, thus needing great trouble. Then, if both the sealingcase 9 and themain body portion 5 are made transparent as provided in the above-described arrangement, visual checking of the soiling degree of the drain trap X can be readily made, so it is possible to determine need or no need of cleaning of the drain pan of the air conditioner body. Thus, water leakage due to negligence of cleaning of the drain pan can be prevented. - The sealing
case 9 includes a plurality (“two” in this embodiment) ofsplit bodies 92 split from each other, a cup-like bottom portion side connecting member 93 (an example of a “first connecting member”) for connecting the pair ofsplit bodies 92 from thebottom portion 52 side (reservoir space 7 side) and an annular cylindrical lid portion side connecting member 94 (an example of a “second connecting member”) for connecting the pair ofsplit bodies 92 from thelid portion 6 side (the opposite side to the bottom portion side connecting member 93) (seeFIGS. 4-5 ). - The
split bodies 92 consist of afirst split body 92A and asecond split body 92B. These first andsecond split bodies pipe portion 2 and the discharge pipe portion 3 (seeFIG. 2 ). Namely, these first andsecond split bodies main body portion 5. As shown inFIG. 5 , thefirst split body 92A and thesecond split body 92B each includes a flat bonding face 92 a extending along the pipe axis direction Y, a firstgapless contact face 92 b having an arcuate shape and placed in gapless contact with the outer circumferential face of the receivingpipe portion 2, and a secondgapless contact face 92 c having an arcuate shape and placed in gapless contact with the outer circumferential face of thedischarge pipe portion 3. In each of thefirst split body 92A and thesecond split body 92B, a recededportion 92 a 1 and a protrudingportion 92 a 2 are formed along the bonding face 92 a, so that with engagement between these receded and protrudingportions 92 a 1, 92 ab, thesplit bodies 92 are assembled to each other. Also, the engagement between these receded and protrudingportions 92 a 1, 92 ab forms a labyrinth structure that serves to prevent leakage of the air in theair gaps 91 to the outside. Moreover, the gapless attachment of the firstgapless contact face 92 b and the secondgapless contact face 92 c to the outer circumferential faces of the receivingpipe portion 2 and thedischarge pipe portion 3 respectively also serves to prevent leak of air in theair gaps 91 to the outside. - As shown in
FIG. 3 andFIG. 5 , in an inner face of thefirst split body 92A and thesecond split body 92B respectively, there is formed aflat face 92 d whose inner face opposed to theflat face 51 a of themain body portion 5 is formed flat, and an outer surface of the portion where thisflat face 92 d is formed provides aflat face 92 e also. Further, in the bottom portion of thefirst split body 92A and thesecond split body 92B respectively, there is formed an engaging steppedportion 92 f which is a stepped portion receded in the radially inner direction from the outer surface and with which the bottom portionside connecting member 93 comes into engagement. In the outer surface of this engaging steppedportion 92 f, aflat face 92 e is formed continuously therewith, and the cross sectional shape of thesplit bodies 92 is formed as a circular shape having a pair of straight side portions in opposition to each other. At a straight portion in the outer surface of the engaging steppedportion 92 f, there is formed an engaging recededportion 92f 1 with which an engagingprotrusion 93 a of the bottom portionside connecting member 93 comes into engagement. As the bottom portion of thesplit body 92 has a cross sectional shape in the form of a circle having a pair of opposed straight side portions, rotation of the bottom portionside connecting member 93 engaged with the engaging steppedportion 92 f is prevented. - At the upper end of the
first split body 92A and thesecond split body 92B respectively, there is formed an annular sealing face 92 g which protrudes annularly toward the radial inner direction. As this annular sealing face 92 g and the outer face of themain body portion 5 come into gapless contact with each other, leakage of air in theair gaps 91 to the outside is prevented. Further, in the outer face at the upper end of thefirst split body 92A and thesecond split body 92B respectively, there is formed an engaging recededportion 92 h into which a first engagingprotrusion 94 a of the lid portionside connecting member 94 comes into engagement. - The bottom portion
side connecting member 93 is formed like a cup having abottom wall 93A and alateral wall 93B protruding annularly from the outer circumference of thebottom wall 93A. Thelateral wall 93B has a shape extending along the lateral face shape of the bottom portion of thesplit body 92. As the bottom portionside connecting member 93 is attached to the bottom portion of the pair ofsplit bodies 92 bonded to each other, the pair ofsplit bodies 92 are connected to each other. In this, the engagingprotrusion 93 a formed in thelateral wall 93B is engaged in the engaging recededportions 92f 1 of thesplit bodies 92, with forming agap 95 between the bottom portions of thesplit bodies 92 and thebottom wall 93A. Thisgap 95 is filled with air, like theair gap 91 described above. - The lid portion
side connecting member 94 has a circular annular shape having anannular flange portion 94A whose inside diameter is greater than the outside diameter of themain body portion 5 and anerect portion 94B erected on thebottom portion 52 side from the outer circumference of theflange portion 94A. Theflange portion 94A has its lower face (inner face) placed in contact with the upper face of thesplit body 92. In theerect portion 94B on its base end side, there is formed a first engagingprotrusion 94 a which comes into engagement with an engaging recededportion 92 h of thesplit body 92 and on its leading end side, there is formed a second engagingprotrusion 94 b which comes into engagement with the upper end of theflat face 92 e of thesplit body 92. As these first and second engagingprotrusions split bodies 92, the lid portionside connecting member 94 is firmly fixed to thesplit bodies 92. - In this embodiment, as the
air gap 91 is formed between the sealingcase 9 which surrounds the entire area of thelateral wall 51 and thebottom portion 52 of themain body portion 5 and thismain body portion 5, even when a temperature difference exists between the liquid reserved in thereservoir space 7 on thebottom portion 52 side of themain body portion 5 and the ambient air, occurrence of condensation can be effectively suppressed by thisair gap 91. As a result, such inconvenience as dripping of water droplets, thus immersing its surrounding in water can be prevented. Moreover, since thebottom portion 52 side of themain body portion 5 is provided as theliquid reservoir space 7, with provision of thegap 95 formed between the bot tom portion of thesplit body 92 and thebottom wall 93A of the bottom portionside connecting member 93 as provided in the instant embodiment, heat retention effect will be improved with theair gap 91 and thegap 95, whereby freezing of the liquid can be prevented. Further, with the sealingcase 9 in the instant embodiment, since this sealingcase 9 forms an integral unit with continuous outer appearance with themain body portion 5, there are provided superior aesthetic appearance and high durability, so the drain trap X can be used for an extended period of time. - If the bonding faces 92 a of the
split bodies 92 are arranged along the pipe axis direction Y of the receivingpipe portion 2 and thedischarge pipe portion 3 as provided in the instant embodiment, the sealingcase 9 can be attached from the lateral sides of the receivingpipe portion 2 and thedischarge pipe portion 3, so that attachment can be carried out easily. Further, when theair gap 91 is formed between the sealingcase 9 and themain body portion 5, the bottom portionside connecting member 93 and the lid portionside connecting member 94 are provided on the bottom portion and the lid portion side respectively, the manufacture of the drain trap X can be significantly facilitated. - (1)
FIGS. 6 through 9 show a drain trap X relating to a further embodiment. For the sake of readiness of understanding, in the following, same names and signs will be used for the same members, and only different arrangements will be explained. In asealing case 9 in this embodiment, the arc-shaped firstgapless contact face 92 b to be placed in gapless contact with the outer circumferential face of the receivingpipe portion 2 and the arc-shaped secondgapless contact face 92 c to be placed in gapless contact with the outer circumferential face of thedischarge pipe portion 3 are gaplessly attached to intermediate portions of the receivingpipe portion 2 and thedischarge pipe portion 3 along the pipe axis direction Y, respectively. With this arrangement, between the sealingcase 9 and the receivingpipe portion 2 or thedischarge pipe portion 3 of themain body portion 5, alarger air gap 91 can be obtained, so that condensation on the surfaces of the receivingpipe portion 2 and thedischarge pipe portion 3 can be prevented in an even more reliable manner. - Further, in this embodiment, the form (type) of engagement between the
split body 92 and the lid portionside connecting member 94 is made different. Specifically, engaging recededportions 92 i are provided in the outer faces at the upper ends of thefirst split body 92A and thesecond split body 92B and an engagingprotrusion 94 c is provided on the base end side of theerect portion 94B of the lid portionside connecting member 94. Then, as the engaging recededportions 92 i and the engagingprotrusion 94 c are engaged with each other, the lid portionside connecting member 94 is fixed to the split bodies 92 (seeFIGS. 8-9 ). Namely, unlike the foregoing embodiment, the second engagingprotrusion 94 b engageable with the upper end of theflat face 92 e of thesplit body 92 is not provided on the leading end side of theerect portion 94B. In this case too, when thelid portion 6 is threaded to themain body portion 5, thelid portion 6 presses down the lid portionside connecting member 94, so this lid portionside connecting portion 94 can be firmly fixed to thesplit bodies 92. Further, in this embodiment, the form (type) of engagement between thesplit body 92 and the bottom portionside connecting member 93 is made different. Specifically, the engagingprotrusion 93 a of the bottom portionside connecting member 93 in the foregoing embodiment is replaced by an engaging recededportion 93 a 1 and the engaging recededportion 92f 1 of thesplit body 92 is replaced by an engagingprotrusion 92f 2. - (2) A heat insulating sheet may be attached in the
gap 95 formed between the bottom portion of thesplit body 92 and thebottom wall 93A of the bottom portionside connecting member 93. This heat insulating sheet is constituted of a heat insulating material such as aluminum or the like or a laminated material with aluminum coated on the surface of the laminated resin layer. Since thebottom portion 52 side of themain body portion 5 is provided as thereservoir space 7, if such heat insulating sheet is provided on the bottom portionside connecting member 93 which is to be disposed on thebottom portion 52 side of themain body portion 5, freezing of liquid inside thereservoir space 7 can be prevented. Moreover, in case such heat insulating sheet is disposed on thebottom portion 52 side of themain body portion 5, this will not interfere with the visibility of theinside space 4 of themain body portion 5. - (3) A desiccant material may be disposed in place of or in addition to the heat insulating sheet to be attached in the
gap 95. In this case, as air having high humidity is enclosed in thegap 95, condensation inside thegap 95 can be prevented. As a result, the heat conduction rate will be lowered, thus enhancing the condensation preventive effect. - (4) The sealing
case 9 may be provided only at thereservoir space 7 portion. Namely, the sealingcase 9 may be provided in opposition to the lower side in thelateral wall 51 of themain body portion 5 than theinclined step portion 51 b. Also, the sealingcase 9 may be provided in opposition to the lower side in thelateral wall 51 of themain body portion 5 than the receivingpipe portion 2 and thedischarge pipe portion 3, there is no limitation in this regard. - (5) In the foregoing, the
split bodies 92 of the sealingcase 9 were formed symmetric relative to the pipe axis direction Y of the receivingpipe portion 2 and thedischarge pipe portion 3. Instead, thesplit body 92 of the sealingcase 9 may be split into two in the vertical direction. - (6) Seal members may be provided on the bonding face 92 a and the gapless contact faces 92 b, 92 c.
- (7) The
air gap 91 and thegap 95 may be evacuated. - (8) The
lid portion 6 may be omitted, so that thepartitioning body 1 may be configured to be no-attachable/non-detachable. - (9) In the foregoing embodiment, the
lid portion 6 was configured to be attachable to themain body portion 5 through threading engagement of thethread portions 18. Instead, this may be configured as an engaging type in which thelid portion 6 can be attached to themain body portion 5 by pressing thislid portion 6 into themain body portion 5 to be engaged therewith. Namely, various modifications will be possible in the respect of how thelid portion 6 is to be attached to themain body portion 5. - (10) In the foregoing embodiment, the bottom portion of the
main body portion 5 was formed like a flat face, thus forming the entire bottom portion of themain body portion 5 as thereservoir space 7. Alternatively, the entire bottom portion of themain body portion 5 may be provided as thereservoir space 7 with various modifications made in the shape of the bottom portion of themain body portion 5 such as forming a step in the bottom portion of themain body portion 5. - (11) In the foregoing embodiment, the shape of the
lateral wall 51 of themain body portion 5 and the shape of thepartitioning body 1 were formed approximately oval as seen in the plan view. Alternatively, they may be formed rectangular or the like, so various modifications can be made for providing the shapes. - (12) In the foregoing embodiment, a ball type body was employed as an example of the
valve body 15. Instead, thisvalve body 15 may be provided in the form of a plate-like body pivotable about a horizontal axis. In this way, various modifications are possible in regard of how thevalve body 15 is to be shaped. - The present invention is applicable to a drain trap including a cylindrical main body having an inside space communicated to a receiving pipe portion and a discharge pipe portion and a partitioning body that partitions the inside space of the main body into a reservoir space and a discharge space.
-
-
- 1: partitioning body
- 2: receiving pipe portion
- 3: discharge pipe portion
- 4: inside space
- 5: main body portion
- 51: lateral wall
- 6: lid portion
- 7: reservoir space
- 8: discharge space
- 9: sealing case
- 91: air gap
- 92: split body
- X: drain trap
Claims (4)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPPCT/JP2018/032616 | 2018-09-03 | ||
PCT/JP2018/032616 WO2020049616A1 (en) | 2018-09-03 | 2018-09-03 | Wastewater trap |
PCT/JP2019/002909 WO2020049753A1 (en) | 2018-09-03 | 2019-01-29 | Wastewater trap |
Publications (1)
Publication Number | Publication Date |
---|---|
US20210054607A1 true US20210054607A1 (en) | 2021-02-25 |
Family
ID=68234822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/049,453 Abandoned US20210054607A1 (en) | 2018-09-03 | 2019-01-29 | Drain trap |
Country Status (8)
Country | Link |
---|---|
US (1) | US20210054607A1 (en) |
JP (1) | JP6590360B1 (en) |
KR (1) | KR102095234B1 (en) |
CN (2) | CN111148881B (en) |
DE (1) | DE112019001740T5 (en) |
SG (1) | SG11202010117QA (en) |
TW (2) | TWI741358B (en) |
WO (2) | WO2020049616A1 (en) |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US447275A (en) * | 1891-02-24 | Vacuum-pump connection | ||
GB1585076A (en) | 1976-07-13 | 1981-02-25 | Roche Products Ltd | Peptides of phosphonic and phosphinic acids |
JPS5329549U (en) * | 1976-08-19 | 1978-03-14 | ||
JPS6011533B2 (en) | 1976-09-01 | 1985-03-26 | 株式会社東芝 | DC power transmission protection device |
JPH02106087A (en) | 1988-10-14 | 1990-04-18 | Rohm Co Ltd | Hybrid integrated circuit device |
US4899781A (en) * | 1988-12-29 | 1990-02-13 | Dunn Diversified Industries, Inc. | Tamper indicator assembly for valves and like devices |
JPH02106087U (en) * | 1989-02-06 | 1990-08-23 | ||
JPH1082085A (en) * | 1996-09-09 | 1998-03-31 | Kajima Corp | Drainage appliance and drainage apparatus |
JP3769726B2 (en) * | 2001-04-25 | 2006-04-26 | 株式会社Inax | Trap insulation cap |
CN1421658A (en) * | 2002-12-26 | 2003-06-04 | 耿玉顺 | Solar water heater and basin with automatic temperature regulating mechanical valve |
US7178546B2 (en) * | 2004-10-04 | 2007-02-20 | Linelox, Llc | Valve cover |
JP4614729B2 (en) * | 2004-10-15 | 2011-01-19 | コンドーエフアルピー工業株式会社 | Drain trap |
US20090017733A1 (en) | 2005-04-19 | 2009-01-15 | Ebara Corporation | Substrate processing apparatus |
DE202005019783U1 (en) * | 2005-12-19 | 2007-01-04 | Lixfeld, Dirk | Suction-side type and pressure-side type special siphon for air conditioner, has bypass valve with condensate outlet provided with temperature-sensitive non-return ball, where outlet is closed due to horizontal position of non-return valve |
CN101155964B (en) * | 2006-04-11 | 2012-05-09 | 近藤-Frp工业株式会社 | Draining valve |
KR100850951B1 (en) * | 2007-03-08 | 2008-08-08 | 엘지전자 주식회사 | Apparatus for draining and air conditioner including the same and control method for the air conditioner |
JP5116511B2 (en) * | 2008-03-07 | 2013-01-09 | ホシザキ電機株式会社 | Drain trap |
JP3158710U (en) * | 2010-02-02 | 2010-04-15 | 株式会社ヨシダアニー | Vertical heater for preventing drain pipe freezing |
CN201695478U (en) * | 2010-06-09 | 2011-01-05 | 宁波铜艺金属制品有限公司 | Sewerage valve |
JP5837791B2 (en) * | 2011-05-11 | 2015-12-24 | 積水化学工業株式会社 | Drain trap device |
KR20130103114A (en) * | 2012-03-09 | 2013-09-23 | 이종태 | Drainpipe trap |
TWI660099B (en) * | 2016-04-22 | 2019-05-21 | 白志興 | Gas blocking device for pipeline |
CN206581336U (en) * | 2017-01-21 | 2017-10-24 | 广州名能节能科技有限公司 | A kind of pipe network automatic drainage freeze preventer |
-
2018
- 2018-09-03 JP JP2019530228A patent/JP6590360B1/en active Active
- 2018-09-03 WO PCT/JP2018/032616 patent/WO2020049616A1/en active Application Filing
-
2019
- 2019-01-29 US US17/049,453 patent/US20210054607A1/en not_active Abandoned
- 2019-01-29 CN CN201980002147.5A patent/CN111148881B/en active Active
- 2019-01-29 SG SG11202010117QA patent/SG11202010117QA/en unknown
- 2019-01-29 KR KR1020197032222A patent/KR102095234B1/en active IP Right Grant
- 2019-01-29 WO PCT/JP2019/002909 patent/WO2020049753A1/en active Application Filing
- 2019-01-29 DE DE112019001740.3T patent/DE112019001740T5/en not_active Ceased
- 2019-01-29 CN CN202111250660.1A patent/CN113882482B/en active Active
- 2019-08-30 TW TW108131243A patent/TWI741358B/en active
- 2019-08-30 TW TW110136628A patent/TWI795931B/en active
Also Published As
Publication number | Publication date |
---|---|
JPWO2020049616A1 (en) | 2020-09-10 |
SG11202010117QA (en) | 2020-11-27 |
TWI795931B (en) | 2023-03-11 |
TW202206674A (en) | 2022-02-16 |
TW202014582A (en) | 2020-04-16 |
TWI741358B (en) | 2021-10-01 |
WO2020049753A1 (en) | 2020-03-12 |
JP6590360B1 (en) | 2019-10-16 |
CN111148881B (en) | 2021-11-19 |
KR20200028881A (en) | 2020-03-17 |
DE112019001740T5 (en) | 2020-12-24 |
CN113882482A (en) | 2022-01-04 |
KR102095234B1 (en) | 2020-03-31 |
CN113882482B (en) | 2024-03-19 |
CN111148881A (en) | 2020-05-12 |
WO2020049616A1 (en) | 2020-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7823601B2 (en) | Drain trap | |
US5881759A (en) | Air-ventilating valve | |
US3605132A (en) | Automatic plumbing vent valve | |
US5608922A (en) | Toilet stabilizing and sealing gasket | |
JP5048482B2 (en) | Drain trap | |
US6128947A (en) | Leak indicating apron for a toilet | |
US3155107A (en) | Vacuum breaker | |
CA2590089A1 (en) | Water trap for sanitary appliances | |
US10451307B2 (en) | Float drain | |
JP2013185386A (en) | Floor drain funnel | |
US20210054607A1 (en) | Drain trap | |
US3715049A (en) | Radiator pressure cap | |
JP6578530B1 (en) | Drain trap | |
JP6040201B2 (en) | Floor drain funnel | |
US3397714A (en) | Mechanical gas seal for floor drain traps and the like having means for sealing in the trap and at a cover therefor | |
US1967644A (en) | Primer valve | |
JP2003064745A (en) | Venting device for drainage | |
JP4184416B2 (en) | Drainage vent | |
JP3228997U (en) | Piping with a ventilation valve stain prevention tool provided on the drain pipe and a ventilation valve stain prevention tool provided on the drain pipe | |
CN219450992U (en) | Drainage structure capable of being cut | |
JP4056994B2 (en) | Drainage vent | |
FI70064C (en) | SKYDDSKONSTRUKTION FOER EN VAKUUMVENTIL | |
JPS629406Y2 (en) | ||
JPS63318376A (en) | Automatic air discharge valve | |
EA018645B1 (en) | Flush valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KONDOH-FRP CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KONDOH, TARO;NISHIMOTO, SHINGO;REEL/FRAME:054128/0661 Effective date: 20201002 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |