JP2007224529A - Drain valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain valve which is connected to a drain pipe horizontally arranged along a floor surface etc. from a refrigerator-freezer, an air conditioner for business, etc., so that drainage through a drain etc. can be smoothly performed, inhibits the intrusion of outside air, a malodor, an insect, a rat, etc., and facilitates inside cleaning such as the removal of a foreign matter. <P>SOLUTION: A valve chamber 2 the upper end of which is closed with a lid member 7 and which has the inside of a lower end formed as a trap 6 is provided in the central part of a valve body 1 having an opening at one end connected to the upstream side of the drain pipe A and having an opening at the other end connected to the downstream side thereof. The valve chamber 2 except the trap 6 is divided into inflow and outflow sides by a partition plate 8 which is suspended from the lid member 7. A valve body 9, which openably and closably closes an upper end opening of the trap 6 opened on the downstream side is attached to the partition plate 8 in a vertically rotatable manner. The partition plate 8 and the valving element 9 prevent the outside air, the malodor, the insect, the rat, etc. from intruding to the upstream side. Additionally, the detachment of the lid member 7 can facilitate the inside cleaning. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a drainage that can be connected to an appropriate place of a drainage pipe such as a refrigerator or a commercial air conditioner to prevent insects or the like from entering the upstream side from the downstream side of the drainage pipe or an odor. It relates to valves.

  Conventionally, for example, in an air conditioner, the generated drain is stored in a drain pan, and the drain pan is configured to be discharged to the outside through a drain pipe connected to the drain outlet. Since the drain pan and the outside air are in direct communication with each other, there is a problem that outside air, odor, etc. enter the room through the drainage pipe through the air conditioner.

For this reason, for example, as described in Patent Document 1, a drain valve is connected to an appropriate position of a drain pipe (drain hose) led out from the air conditioner to the outside of the room, and ventilation with outside air is blocked by the drain valve, It is configured to prevent odor from the outside from entering the indoor side through the drain pipe. Specifically, the structure of this drain valve is such that the central part of the valve body having upper and lower ends formed as connection ports is formed in a valve chamber having a larger diameter than these connection ports, and the upper end of the lower connection port. Is formed in the valve seat of a hollow spherical valve body that protrudes into the lower end portion of the valve chamber and the protruding end portion is movably mounted in the valve chamber, and the upper and lower connection ports are connected to the upstream drainage pipe. When connected to the downstream drainage pipe, the hollow spherical valve element seated on the valve seat blocks the ventilation while the drainage from the upstream drainage pipe stays in the valve chamber. The hollow spherical valve body is lifted by buoyancy, separated from the valve seat, and discharged to the downstream drain pipe.
JP-A-8-5093

  However, according to the drain valve as described above, in a state where the hollow spherical valve body is seated, it is possible to block the outside air from the downstream side from flowing backward to the upstream side, but insects and the like from the downstream side When the water enters, there is a possibility that the hollow spherical valve body is pushed up and enters the upstream side through the drain valve. Further, when a negative pressure is generated by the operation of a ventilating fan or the like in an airtight room, an intake force acts on the valve chamber of the drain valve through the drain pipe, and the hollow spherical valve body is lifted by the intake force to There was a problem that odors and the like flow back into the room.

  Further, since this drain valve is a vertical valve having an inlet at the upper end and an outlet at the lower end, it is led out from the home air conditioner to the outdoor side as described above, and is vertical along the outer wall. The drain hose installed in the floor can be connected to the lower end of the drain hose, etc., but it can be used in a space under the floor, such as a large refrigerator-freezer or commercial air conditioner. It cannot be used for a relatively large-diameter drain pipe that is installed horizontally along the pipe. To prevent backflow of odors and the like to such a drain pipe, a U-shaped trap should be installed at the appropriate place of the drain pipe. Although it is possible to prevent the odor from flowing backward, it is possible to easily enter the upstream side through this U-shaped trap if soot enters from the downstream side of the drain pipe. There is a risk of doing.

  Further, when dust or foreign matter accumulates or becomes clogged in the U-shaped trap, it is necessary to remove the U-shaped trap from the drain pipe and remove and clean it, which is extremely difficult. In addition, there is a problem that it is difficult to dispose such a U-shaped trap in a low and narrow space such as under the floor.

  The present invention has been made in view of such problems, and the object of the present invention is to be used by simply connecting to an appropriate place of a drain pipe arranged horizontally even in a narrow space. In addition, insects and moths can enter the upstream side from the downstream side of the drainage pipe and reliably prevent odors from entering, and the valve body and the inside can be easily cleaned without removing it from the drainage pipe. To provide a drainage valve that can be used.

  In order to achieve the above object, a drainage valve according to the present invention is a drainage valve connected to an intermediate part of a drainage pipe as described in claim 1, wherein one end is connected to an upstream side of the drainage pipe. The central part of the valve body that is formed and formed at the outlet connecting the other end to the downstream side of the drain pipe is formed in the valve chamber, and the opening is closed by a detachable lid member at the upper end of the valve chamber And a trap portion recessed below the inner bottom surface of the inflow and outflow ports is formed in the lower portion of the valve chamber, and further, the valve chamber is disposed upstream and downstream from the lower surface of the lid member in the valve chamber. A partition plate that divides into two is vertically suspended, and the opposite inner wall surface of the valve chamber, which is in contact with both end surfaces of the partition plate, is inclined from the center in the height direction of the inner wall surface toward the inner bottom surface of the outlet. A downwardly inclined valve seat is formed, and the above-mentioned partition plate facing the outlet is formed on the valve seat. A structure in which a tongue-shaped valve body projecting obliquely downward toward the outlet side is seated so as to be openable and closable, and the communication between the trap portion and the discharge port is blocked by the seating of the valve body. Have.

  In the drain valve configured as described above, the invention according to claim 2 is a trap portion in which the base end portion of the valve body is pivotally supported by the partition plate so as to be pivotable up and down, and the trap portion communicates with the outlet side due to its own weight. In the invention according to claim 3, the valve body is formed of an elastic plate, and the base end portion thereof can be bent in the vertical direction with respect to the partition plate. The open end of the trap part connected to the outflow port side is closed so that it can open and close by the elastic force.

  According to a fourth aspect of the present invention, in the drainage valve according to the first, second, or third aspect of the present invention, both side wall surfaces of the valve chamber are formed as vertical wall surfaces parallel to each other, and the opposing surfaces of the vertical wall surfaces are formed. A vertical guide groove is formed vertically downward from the upper inclined end of the valve seat, and both side ends of the lower half of the partition plate are inserted into the vertical guide groove so that they can be pulled out, and the lower end of the partition plate is trapped. The upper end of the partition plate is provided integrally with the lower surface of the lid member.

  According to the first aspect of the present invention, the central portion of the valve body, which has one end at the inlet and the other end at the outlet, is formed in the valve chamber, and the upper end of the valve chamber is detachable by a lid member. A closed opening is provided, and a trap portion recessed below the inner bottom surface of the inflow and outflow ports is formed in the lower portion of the valve chamber, and further, the valve chamber is formed in the valve chamber from the lower surface of the lid member. A partition plate that is divided into two on the upstream side and the downstream side is suspended, and the inner surface of the outlet from the center in the height direction of the inner wall surface is formed on the opposing inner wall surface of the valve chamber that is in contact with both end surfaces of the partition plate. A valve seat in the form of a tongue that is inclined obliquely downward toward the bottom surface, and that protrudes obliquely downward from the partition plate facing the outlet side toward the outlet side. Since the body is seated so that it can be freely opened and closed, the structure of a compact horizontal drainage valve with a low height is established. It can be connected to a drain pipe that is horizontally routed from a refrigerator-freezer or the like through a narrow space such as under the floor, with the drain valve being easily interposed at an appropriate position of the drain pipe. In this state of use, drainage such as drain discharged from the upstream side stays in the trap portion, and between the inlet and outlet by the partition plate and the valve body disposed in the valve chamber. By blocking the flow of air, it is possible to reliably prevent odors and the like from flowing backward from the downstream side.

  Further, a valve seat inclined obliquely downward from the central portion in the height direction on the inner wall surface of the valve chamber toward the inner bottom surface of the outlet is formed, and the outlet is formed from a partition plate facing the outlet on the valve seat. Since the tongue-shaped valve body protruding obliquely downward toward the side is seated so as to be openable and closable, even if insects or moths enter from the downstream side of the drain pipe, Intrusion into the trap part can be reliably prevented, and when drainage such as drainage flows into the trap part from the upstream side through the valve chamber of the drain valve, it tends to flow downstream from the trap part. The valve body can be pushed up by the pressure of the drainage, and can smoothly flow out downstream through the trap portion.

  In addition, a negative pressure is generated by the operation of the ventilation fan or the air conditioner fan, and even if an intake force is generated in the pipe due to the negative pressure, the intake force acts in a direction to more firmly press the valve body against the valve seat. Therefore, it is possible to reliably eliminate the possibility that outside air or odor will enter the room. In addition, an opening is provided at the upper end of the valve chamber of the valve body, the opening is closed by a lid member, and a partition plate for attaching the tongue-shaped valve body to the lower surface side of the lid member is provided. Therefore, if dust or foreign matter accumulates or becomes clogged in the drain valve, the partition plate and valve body can be easily removed from the valve chamber by removing the lid member without removing the drain valve from the piping. Can do.

  Accordingly, it is possible to easily remove dust and foreign matters inside through the opening, and to clean the inside of the valve main body easily and surely, and in addition, it adheres to the valve body and the partition plate. Dust and the like can be removed cleanly by washing with water. Furthermore, after cleaning, the valve body and the partition plate can be easily disposed at the original position through the upper end opening of the valve chamber, and then the cover body is closed to make it usable. be able to.

  According to the second aspect of the present invention, the base end portion of the valve body is pivotally supported by the partition plate so as to be pivotable up and down, and the open end of the trap portion that leads to the outflow side by its own weight is closed so as to be opened and closed. According to the third aspect of the present invention, the valve body is formed of an elastic plate, and the base end portion of the valve body is continuously connected to the partition plate so as to be bent in the vertical direction. Since the opening end of the trap part that is communicated is closed so that it can be opened and closed, in any case, it is possible to open the upper end part of the trap part that leads to the outlet side by simply rotating upward by a slight pushing force. The drain that flows in from the upstream side can be smoothly discharged to the downstream side through the trap portion, and when cleaning the valve main body, the valve body is integrated with the partition plate from the valve chamber to the upper end opening. Can be easily removed through Kill.

  According to the fourth aspect of the present invention, the wall surfaces on both sides of the valve chamber are formed as vertical wall surfaces that are parallel to each other, and the vertical guide grooves are formed on the opposing surfaces of the vertical wall surfaces from the upper inclined end of the valve seat to the vertically downward direction. The lower end of the partition plate is inserted into the vertical guide groove so that the lower end portions of the lower half of the partition plate can be pulled out, and the lower end of the partition plate enters the upper end portion of the trap portion. By inserting the partition plate into the valve chamber through the portion and inserting both end portions of the partition plate into the vertical guide groove, the partition plate can be smoothly assembled at an accurate position and simultaneously with the assembly of the partition plate Can be arranged on the valve seat, the assembly work can be easily performed, and the lower end portion of the partition plate is immersed under the water surface staying in the trap portion. A divider plate between the inlet and outlet A state in communication only through the lap portion, therefore, he is possible to reliably prevent the flow of air.

  In addition, since the upper end of the partition plate is integrally provided on the lower surface of the lid member, the partition to which the valve plate is attached by removing the lid member that closes the upper end opening of the valve chamber when cleaning the inside of the valve. The plate can be taken out integrally with the lid member through the opening and simultaneously, so that not only the valve chamber and the like can be cleaned quickly, but also after the cleaning, these partition plates and valves are placed in the valve chamber. At the same time that the body is inserted and disposed, the upper end opening of the valve chamber can be closed by the lid member, so that the assembly work can be performed efficiently.

  Next, specific embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 to 3, the valve body 1 is made of a transparent or translucent hard synthetic resin, and the central portion is formed in the valve chamber 2. In addition, an inlet 3 is formed integrally with the valve chamber 2 on one end side of the valve chamber 2, and an outlet 4 is formed integrally on the other end side. The inflow port 3 and the outflow port 4 are formed in a short cylindrical shape having the same diameter and a fixed length, and are opposite to each other from both ends of the valve chamber 2 on the same horizontal axis centering on the valve chamber 2. The inflow terminal portion of the inlet 3 is communicated with the opening 2a on one end side of the openings 2a and 2b provided at both ends of the valve chamber 2, and the outlet 4 is connected to the opening on the other end side. The outflow start end of the is communicated.

  The valve chamber 2 is formed in a hollow portion that is slightly longer than the inflow port 3 and the outflow port 4, and both side wall surfaces thereof are formed as vertical wall surfaces 2c and 2c parallel to each other. The width between the opposing inner side surfaces of the vertical wall surfaces 2c and 2c is formed to be equal to the inner diameter of the inlet 3 and outlet 4 and the upper end of the valve chamber 2 is connected to the inlet 3 and outlet 4. It is formed in a planar oval-shaped peripheral wall portion 2d protruding upward from the upper peripheral surface, and the upper end of the peripheral wall portion 2d is formed in an opening portion 5 that is fully open. Further, the lower part of the valve chamber 2 is recessed in a ship bottom shape below the inner bottom surfaces of the inlet 3 and outlet 4 and is trapped in a trap portion 6 bulging downward from between the lower peripheral surfaces of the inlet 3 and outlet 4. Forming.

  Further, the opening 5 of the valve chamber 2 is hermetically sealed by a synthetic resin lid member 7, and a front vertically long rectangular shape in which the lower end from the lower surface of the lid member 7 reaches the upper end of the trap portion 6. A partition plate 8 made of synthetic resin is disposed, and the partition plate 8 divides the valve chamber 2 into an inflow side and an outflow side while leaving the trap portion 6, and the inflow side and the outflow side only through the trap portion 6. Is in communication.

  Further, the lower end portions on both sides of the partition plate 8 are formed as inclined end surface portions 8a, 8a inclined inward from the lower ends of the both end surfaces, and the inclined end surface portions 8a, 8a are directed downward in the trap portion 6. A structure in which the partition plate 8 is disposed at a predetermined height position by abutting and receiving the upper end surface of the opening inclined inward to prevent the partition plate 8 from further moving downward. is doing. The partition plate 8 is disposed in the valve chamber 2 from the center in the length direction to the portion near the inflow port 3, and its upper end is integrally connected to the lower surface of the partition plate 8. You may comprise so that it may isolate | separate from the lower surface of the board 8, and you may make it contact | adhere in the state which faced the upper end surface to this lower surface.

  The valve chamber 2 extends from the center in the height direction on the opposite inner wall surface of the valve chamber 2 to which both end surfaces of the partition plate 8 are in contact to the inner bottom surface of the opening 2b on the other end side, which is the outflow start end of the outflow port 4. On the inner surface, a ridge having a constant width is provided inwardly, and the ridge is obliquely downward from the both end face sides of the partition plate 8 toward the inner bottom surface of the opening 2b on the outlet 4 side. It is formed in the inclined plane U-shaped valve seat 10, and further, the upper inclined end of the valve seat 10, that is, the center in the height direction on the opposite inner wall surface of the valve chamber 2 where both side end surfaces of the partition plate 8 are in contact. Vertical guide grooves 11, 11 into which both side end portions of the lower half of the partition plate 7 are removably inserted are provided vertically downward from the portion.

  Bearing pieces 12, 12 project from the opposite sides of the valve seat 10 at the center both end portions in the height direction of the plate surface facing the outlet 4 side of the partition plate 8, The bearing pieces 12, 12 are seated on the valve seat 10, and the upper end opening 6 a on the discharge side of the trap portion 6 surrounded by the valve seat 10 is closed so as to be freely opened and closed. A base end portion of the valve body 9 that blocks communication with the outlet 4 is pivotally supported so as to be rotatable up and down. The valve body 9 is made of a synthetic resin plate piece in the shape of a tongue piece, the lower surface of the outer periphery of which is formed in the same plane shape as the valve seat 10, and is seated on the valve seat 10 by its own weight. .

  As shown in FIGS. 4 to 6, the drain valve configured as described above is disposed at an appropriate position of a drain pipe A that is horizontally piped to discharge drain to the outside from, for example, a refrigerator-freezer or a commercial air conditioner. Used in a connected state. Specifically, with the lid member 7 of the valve body 1 facing upward and the trap portion 6 facing downward, the inlet 3 is connected to the upstream drain pipe A1, and the outlet 4 is connected to the downstream drain pipe A2. Connect to the. At this time, since the drain valve is a horizontal valve having a low height, it can be easily installed and constructed together with the drain pipe A even in a narrow space such as under the floor.

  In a state where drainage or the like is not drained from the upstream side, as shown in FIG. 5, water stays in the trap portion 6 of the valve chamber 2 and the upper end opening 6a on the discharge side of the trap portion 6 Is closed by the valve body 9, and the upstream opening 2a of the valve body 1 and the downstream opening are formed by the valve body 9 and the partition plate 8 suspended downward from the lower surface of the lid member 7. Communication with the part 2b is blocked.

  Accordingly, outside air, odors and the like are prevented from entering the upstream drain pipe A1, and insects and insects enter through the downstream drain pipe A2 to reach the upper surface of the valve body 9 even when the valve reaches the upper surface. Since the body 9 is received on the valve seat 10, it does not open, and the valve body 9 is more firmly pressed against the valve seat 10 to keep the upper end opening 6 a of the trap portion 6 closed. Intrusion into the upstream side through the trap portion 6 can be reliably prevented. Even if a negative pressure is generated by the operation of a ventilation fan or the like indoors and an intake force is generated in the upstream drain pipe A1, the intake force acts in a direction in which the valve body 9 is pressed against the valve seat 10. The outside air does not flow into the room through the drain pipe A, and the air tightness in the room can be maintained.

  Next, when drained from a refrigerator or commercial air conditioner, etc., it flows into the valve chamber 2 facing the opening 2a from the upstream drain pipe A1 through the opening 2a of the valve body 1, Further, the water surface rises in the trap portion and flows downstream to reach the lower surface of the valve body 9 that closes the upper end opening 6a on the discharge side of the trap portion 6, and as shown in FIG. Then, the valve body 9 is pushed up to open the opening 6a, overflow from the trap 6 to the opening 2b on the downstream side of the valve chamber 2, and discharged to the outside through the downstream drain pipe A2.

  Further, since the valve body 1 is formed of a transparent or translucent synthetic resin as described above, the inside of the valve body 1 can be seen through from the outside, and the inside of the valve body 1 can be removed without removing the lid member 7. The state of can be confirmed. During long-term use, the inside of the valve chamber 2 and the trap portion 6 of the valve body 1 are contaminated by dust or foreign matter mixed in the drain or the like, or dust or the like adheres to the smooth operation. In this case, when the lid member 7 that closes the upper end opening 5 of the valve chamber 2 is removed, the opening 5 opens entirely and the partition plate 8 that hangs from the lower surface of the lid member 7 The valve body 9 is taken out of the valve body 1 integrally with the member 7, and the valve body 9 is connected to the partition plate 8 so as to be rotatable up and down, so that the valve body 9 can be taken out through the opening 5 at the same time. it can.

  In this way, by removing the lid member 7, the partition plate 8 and the valve body 9 arranged in the valve chamber 2 are integrally taken out to the outside, and the emptied valve body 1 is cleaned by washing or the like. At the same time, dust and the like adhering to the partition plate 8 and the valve body 9 are removed and cleaned cleanly. After that, the lid member 7 is gripped and the partition plate 8 is integrated with the valve body 9 through the opening 5. Inserted into the valve chamber 2, both side ends of the partition plate 8 below the base end of the valve body 9 are inserted into vertical guide grooves 11, 11 provided in the lower half of the opposed inner wall surface of the valve chamber 2. Then, the inclined end surface portions 8a and 8a at the lower end portions on both sides of the partition plate 8 contact the upper end opening of the trap portion 6 and the lower end portion reaches the upper end portion of the trap portion 6 without lowering further. At the same time that the chamber 2 is divided into the upstream side and the downstream side, the valve body 9 is seated on the valve seat 10 and the lid body 9 Therefore, the upper end opening 5 of the valve chamber 2 is closed, and the drain valve can be easily assembled.

  In the above embodiment, the valve body 9 has a base end pivotally supported by the partition plate 8 so as to be pivotable up and down. However, the valve body 9 is formed of a flexible synthetic resin material having elasticity. Then, the base end portion may be integrally connected to the partition plate 8, and the connecting portion may be elastically bent in the vertical direction with the connecting portion serving as a fulcrum so as to be attached to and detached from the valve seat 10. Further, the valve body 1 may be formed of an opaque synthetic resin. Moreover, the drainage valve of the present invention can also be used by connecting to a drainage pipe laid under the floor of a high-rise building or a kitchen drainage pipe.

The vertical side view of this invention drain valve. FIG. The perspective view which cut longitudinally the center which shows the internal structure of a valve chamber. The simplified perspective view which shows a use condition. The vertical side view of the state which the valve body has closed. The vertical side view of the state which the valve body has opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve body 2 Valve chamber 3 Inlet 4 Outlet 5 Opening 6 Trap part 7 Lid member 8 Partition plate 9 Valve body
10 Valve seat A Drain pipe

Claims (4)

  A drain valve connected to the middle part of the drain pipe, one end of which is formed at the inlet connected to the upstream side of the drain pipe and the other end is formed at the outlet connected to the downstream side of the drain pipe The central part of the valve chamber is formed in the valve chamber, and an opening is provided at the upper end of the valve chamber, which is closed by a detachable lid member, and is recessed below the inner bottom surface of the inlet and outlet in the lower part of the valve chamber. And a partition plate that divides the valve chamber into an upstream side and a downstream side from the lower surface of the lid member, and is in contact with both end surfaces of the partition plate. A valve seat that is inclined obliquely downward from the center in the height direction of the inner wall surface toward the inner bottom surface of the outlet, and the partition facing the outlet side is formed on the valve seat. Tongue-shaped valve body projecting obliquely downward from the plate toward the outlet side can be opened and closed Drain valve, characterized in that to interrupt the communication between the trap portion and the discharge port by seating of the valve body by wearing.   The base end portion of the valve body is pivotally supported by the partition plate so as to be pivotable up and down, and the opening end of the trap portion that communicates with the outlet side by the dead weight of the valve body is closed so as to be openable and closable. Item 2. The drain valve according to Item 1.   The valve body is formed of an elastic plate, and its base end is connected to the partition plate so that it can be bent in the vertical direction, and the open end of the trap portion that leads to the outlet is closed by the elastic force so that it can be opened and closed. The drain valve according to claim 1, wherein   Both side wall surfaces of the valve chamber are formed on vertical wall surfaces that are parallel to each other, and a vertical guide groove is formed on the opposite surface of the vertical wall surface from the upper inclined end of the valve seat to the vertically downward direction. Both end portions of the half are removably inserted, the lower end of the partition plate is inserted into the upper end portion of the trap portion, and the upper end of the partition plate is integrally provided on the lower surface of the lid member. The drainage valve according to claim 1, claim 2, or claim 3.

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