JP5285938B2 - Drainage hopper for water heater - Google Patents

Description

  The present invention relates to a drain hopper for a water heater for collecting expansion water and drain water discharged from a water heater installed in a building and flowing it to a downstream drain pipe outside the water heater, in particular, a hot water storage type water heater. A drainage pipe having a drainage pipe holder portion connectable to a plurality of drainage pipes extending from the drainage pipe and connected to the drainage pipe holder portion and the downstream side drainage pipe in order to overflow the backflow water The present invention relates to a drainage hopper for a water heater comprising a cylindrical body having an opening to which a mesh member is applied between the joint and the joint.

  Normally, in domestic hot water storage water heaters, it is necessary to discharge the expansion water generated by the internal pressure rise when boiling water or the drain water when checking the hot water storage tank to the outside of the equipment body. . For this reason, a plurality of drainage pipes for discharging these wastewaters are arranged at the lower part of the equipment body, and further, the installation base of the equipment body has expanded water and water discharged from the plurality of drainage pipes. A drainage hopper for collecting the drained water is arranged.

  In addition, according to the standards of the Air Conditioning Sanitary Engineering Society, when installing a water heater, there is a water heater drain pipe between the outlet of the expansion water drain pipe or drain water drain pipe and the outlet of the drain hopper. When the tube diameter is 25 mm or less, it is necessary to provide a minimum space of 50 mm, when the diameter of the water heater drain pipe is 30 to 50 mm, minimum 100 mm, and when the diameter of the water heater drain pipe is 65 mm or more, it is necessary to provide a minimum space of 150 mm. It is said. This is because edge cutting is performed in the middle of the drainage path to allow air to flow in and out and to smoothly drain the expanded water or drainage water to the drain hopper receiving port due to natural fall. When the drainage pipe is clogged or the backflow of drainage occurs from the downstream drainage pipe, the wastewater does not flow back into the water heater by overflowing these waste water between the drainage pipe outlet and the drainage hopper receiving port. It is for doing so.

  However, the actual lower space of the water heater main body is extremely small as it is suppressed to the minimum height necessary to ensure stability after installation on the foundation of the equipment. For this reason, the size of the drainage hopper that can be installed in the lower part of the water heater body is naturally limited, and when there is a strong momentum of the discharged expansion water or drainage water, these drainage does not enter the drainage hopper receptacle. When a flexible hose is scattered around or a drain hose is used, the drain hose may be violently detached from a predetermined position.

  Thus, in recent years, drainage pipe systems in drainage hoppers and hot water storage hot water heaters that have been variously improved to solve the above problems have been proposed.

  For example, in Japanese Patent Application Laid-Open Nos. 2003-194417 and 2005-2624, a partition plate having a cylindrical side wall is provided in a drain hopper receptacle, and this cylindrical partition plate is used to discharge a drain pipe of a water heater. A drainage hopper is disclosed that surrounds the outlet to prevent the expansion water and drainage water from scattering.

  However, these types of drain hoppers are substantially equivalent to a structure in which the drain hopper receptacle is raised to the drain outlet level, and therefore the edge cut between the drain outlet and the drain hopper receptacle is not. Insufficient, a space of 50 mm or more could not be secured. For this reason, when a sudden backflow of drainage occurs due to clogging of the downstream drainage pipe, it is possible to prevent the backflow of water into the water heater by overflowing the backflow water before the drain pipe outlet. It was difficult.

  Japanese Patent Laid-Open No. 2003-172549 discloses that the drainage in the drainage hopper is provided with a closing means that operates in conjunction with the movement of the float installed in the drainage hopper at the outlet of the drainage pipe extending from the water heater. There is disclosed a drainage hopper that blocks the discharge of the expanded water and drainage water flowing out from the discharge port when the water level becomes abnormal, thereby preventing the scattering of the drainage.

  However, this type of drainage hopper functions effectively only when the downstream drainage pipe is clogged, and with respect to the flow of expanded water and drainage water with strong momentum that occurs even during normal operation, It was not possible to prevent the waste water from splashing outside the drain hopper. In addition, since the structure of the closing means is complicated and it must be attached to the outlet of the drain pipe in a one-to-one correspondence, in the case of a drain hopper or water heater that is actually constructed on site (dimensions) There is a problem that it cannot be handled at all when it has a plurality of drain pipes.

  Further, in Japanese Patent Application Laid-Open No. 8-159564 and Japanese Utility Model Application Laid-Open No. 2-20056, an expansion water drain pipe and a drain water drain pipe are connected to one discharge port on the equipment side in order to alleviate the physical restriction condition of the drain hopper. An integrated water heater is disclosed.

However, this type of water heater has a problem in that the structure of the drain pipe is complicated, and the reliability with respect to smooth drainage is low.
JP 2003-194417 A JP 2005-2624 A JP 2003-172549 A JP-A-8-159564 Japanese Utility Model Publication No. 2-20056

  Therefore, the present invention can provide a space of 50 mm or more between the outlet of the drain pipe of the water heater and the outlet of the drain hopper in consideration of the standards of the Air Conditioning Sanitary Engineering Society. It is possible to reliably collect drainage such as expansion water and drainage water discharged from multiple drain pipes, and even when the momentum of the expansion water and drainage water is strong. It aims at providing the drainage hopper for water heaters which can prevent scattering of drainage.

  As a result of intensive studies on drainage hopper improvements and drainage characteristics of hot water storage water heaters, the present inventors have extended from the water heater so that the drainage does not scatter between the drain pipe and the hopper. A plurality of drain pipes can be extended to the drain hopper receptacle and connected and fixed. The edge cut between the drain pipe and drain hopper of the water heater has a height of 50 mm or more below the drain hopper receptacle. It has been concluded that it is most effective to achieve the object by arranging a cylindrical body having a mesh-like opening on the side wall, and the present invention has been completed.

  That is, according to the present invention, a drain pipe holder portion having a plurality of receptacles connected to the drain pipes of the expansion water and drainage water of the water heater, and a receptacle connected to the downstream drain pipe outside the water heater Or a drainage pipe joint part having an outlet, and an opening using a mesh member on the side wall for overflowing the backflow water, and detachable between the drainage pipe holder part and the drainage pipe joint part A drainage hopper for a water heater comprising a cylindrical body portion to be mounted is provided.

  Since the drain pipe holder part has a receiving port to which a plurality of drain pipes extending from the water heater can be connected to the upper part of the drain pipe holder part, it is between the drain pipe discharge port and the drain hopper receiving port as in the past. There is no drainage flow exposed to the outside. In addition, the outlet of the drainage pipe holder part can individually fix a plurality of drainage pipes extending from the water heater, so even when the momentum of the discharged expanded water or drained water is strong, When these wastewaters scatter to the surroundings without entering the drain hopper receptacle, or when a flexible hose is used for the drain pipe, the drainage hose will not break away from the drain hopper receptacle. .

  The shape of the receiving port is not particularly limited as long as it has a diameter and a depth that can securely fix the drain pipe or drain hose to be inserted by friction or the like, and a known receiving port shape can be applied. Further, the number of receiving ports is not particularly limited as long as there is an arrangement space in the upper part of the drainage pipe holder part, but usually it is sufficient that there are 2 to 4 receiving ports for one water heater, The shape of each receptacle may be different.

  Furthermore, it is preferable that stopper means for preventing the connected drain pipe or drain hose from being excessively inserted is provided inside the receptacle. The stopper means only needs to have a structure that prevents further intrusion by contacting the tip of the drain pipe or drain hose. For example, the stopper means crosses the stepped portion provided inside the receiving port or the inner bottom of the receiving port. There is a net-like partition to do.

  A cylindrical body (tubular body) having an opening using a mesh member on the side wall is disposed at the lower part of the drain pipe holder. By the drain pipe holder, the expanded water or drained water collected through the receiving port passes through the cylindrical body due to natural fall, but the mesh member becomes resistance, so the There is almost no scattering outside. Further, in the conventional drainage hopper, a mesh plate made of a mesh member or the like is provided in the drainage flow path to prevent entry of dust such as pests and dead leaves. However, in the present invention, the opening using the mesh member is connected to the drainage flow. Since it is arranged outside the drainage channel instead of inside the road, it is possible to reliably prevent the invasion of debris such as pests and dead leaves without causing clogging due to dead leaves entering the opening as in the prior art.

  In addition, when the cylindrical body is clogged in the downstream drainage pipe or the backflow of drainage occurs, the backflow water overflows through the opening provided in the side wall, so the drainage from the downstream drainage pipe is the water heater. And to prevent backflow into the drain of the water heater.

  That is, a cylindrical body (tubular body) having an opening using a mesh member on the side wall substantially cuts an edge between the drain pipe of the water heater and the drain pipe connected to the downstream side of the drain hopper. Play a role. For this reason, in principle, the opening of the body side wall does not necessarily need to be formed from a mesh member, and may be formed from a thin plate member having a simple opening, slit, round hole, or square hole assembly. Good. Moreover, you may provide the opening part which consists of an aggregate | assembly of a slit, a round hole, or a square hole in the trunk | drum side wall itself which consists of resin. However, it is most effective to form the openings with a mesh member or cover with a mesh member in order to strongly prevent the scattering of waste water flowing through the trunk and the entry of debris such as pests and dead leaves. .

  This is because the mesh member acts as a substantial barrier against drainage and liquid droplets that collide with the member substantially parallel or at an acute angle, and produces a rebound effect, while the level of the backflow water is low. This is because there is no resistance against drainage flowing so as to be substantially orthogonal to the mesh member as the rise of the mesh member, and smooth discharge of backflow water is allowed.

  In addition, the height of the opening of the cylindrical body is usually 25 mm or less in the diameter of a drainage pipe such as a water heater in consideration of the reliability of the edge cutting function in the drainage path and the standards of the Air Conditioning Sanitation Engineering Society. It is preferable that the minimum height is set to 50 mm or more.

  In addition, the cylindrical body should be detachably mounted between the drain pipe holder and the drain pipe joint described later in consideration of drain hopper inspection, internal cleaning, and workability during construction. Is preferred.

  Next, a drainage pipe joint portion having a receiving port or a difference port connected to a downstream drainage pipe outside the water heater is disposed at the lower portion of the cylindrical body portion. This drainage pipe joint receives the drainage that naturally falls in the vertical direction from the water heater at the invert part in the drainage pipe joint, and the drainage received at the invert part is usually drawn horizontally in the horizontal direction. It functions to change the direction of discharge to the downstream drainage pipe. Therefore, it is preferable that the drainage pipe joint portion has an elbow shape that converts the flow of drainage from the vertical direction to the horizontal direction.

  In addition, the drainage pipe joint part prevents the splashing of the expansion water and drainage water that naturally falls in the vertical direction from the water heater, and the trunk part opening part using the mesh member disposed at the upper part of the drainage pipe joint part It is important to prevent droplets from splashing. For this reason, it is preferable that the invert part of a drainage pipe joint part is comprised from the composite spherical surface shape which has almost no horizontal surface in the fall point of drainage.

  In addition, if a circular pipe called a mud ring is connected to the bottom of the drainage pipe joint, the drainage hopper can be adjusted to the height of the ground plane only by cutting the pipe. This improves the workability and the installation stability of the drainage hopper after construction.

  According to the present invention, since the drain pipe holder portion having a receiving port that can connect and fix a plurality of drain pipes extending from the water heater is installed, the momentum of the discharged expanded water and drained water Even when the drainage hose is strong, if the drainage scatters to the surroundings without entering the drainage hopper receptacle, or if a flexible hose is used for the drainage pipe, the drainage hose may run out of the drainage receptacle. There is no withdrawal.

  In addition, according to the present invention, the cylindrical body having an opening using a mesh member is disposed on the side wall between the drain pipe holder part and the drain pipe joint part. If the backflow of drainage occurs from the downstream drainage pipe, the backflow water overflows through the opening provided in the side wall. The drainage from the downstream drainage pipe is prevented from flowing back into the water heater and the drainage pipe of the water heater.

  Hereinafter, a drain hopper for a water heater according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

  FIG. 1 is a schematic connection diagram of a water heater drain hopper 1 showing an embodiment of the present invention. The water heater drain hopper 1 supplies expansion water and drain water discharged from the water heater 2 to the outside of the water heater. It connects so that it may drain to the downstream drainage pipe 3.

  Specifically, as shown in FIG. 1, the water heater drain hopper 1 according to the present invention is installed at the lower part of the water heater 2, and three drain hoses 20 extending from the water heater 2 are installed at the upper part of the drain hopper. The three outlets 40 of the drain pipe holder part 4 are individually connected. Moreover, the drain pipe joint part 6 of the drain hopper 1 has an elbow shape, and the discharge side receiving port 60 is connected to the downstream drain pipe 3 outside the water heater.

  As a result, when boiling the hot water of the water heater 2, the drain water generated when the expansion water generated by the internal pressure rise or the hot water storage tank is inspected is drained from the drain pipe provided at the lower part of the device body. To the drainage hose 20. The drainage discharged to the drainage hose 20 is collected into the drainage hopper 1 through the three receiving ports 40 of the drainage pipe holder part 4 and passes through the cylindrical body part 5 by natural fall to the drainage pipe. It falls to the invert part 60 in the joint part 6. Then, the dropped drainage is changed in direction by about 90 ° by the invert portion 60 and discharged to the downstream drainage pipe 3 connected to the discharge side receiving port 60 of the drainage pipe joint 6.

  2 and 3 are enlarged views of the drain hopper 1 according to the present invention shown in FIG. 1, FIG. 2 is a plan view of the drain hopper 1, and FIG. 3 is a longitudinal sectional view. FIG. 4 is a longitudinal sectional view of a drainage pipe joint portion that is a drainage hopper 1 according to another embodiment and has an invert shape different from the example shown in FIG. 3.

  As can be understood with reference to FIG. 3, the drainage hopper 1 according to the present invention is composed of three main parts including a drainage pipe holder part 4, a cylindrical body part 5, and a drainage pipe joint 6. An opening 51 having a height d = 50 mm covered with a mesh member 50 is provided on the side wall of the body 5 disposed between the drain pipe holder 4 and the drain pipe joint 6. The height of the opening 51 is set to d = 50 mm. The minimum height when the diameter of the drainage pipe of the water heater or the like in the standard of the Japan Society for Air Conditioning and Sanitation is 25 mm or less is the reliability of the edge cutting function in the drainage path. This is because (50 mm) is taken into consideration. Therefore, this height is a minimum of 50 mm when the pipe diameter of the water heater drain pipe is 25 mm or less, a minimum of 100 mm when the pipe diameter of the water heater drain pipe is 30 to 50 mm, and the pipe diameter of the water heater drain pipe is 65 mm or more. In this case, it is appropriately set depending on the diameter of the drain pipe such as a water heater such as a minimum of 150 mm, and is not limited to 50 mm.

  As shown in FIG. 2, the drain pipe holder portion 4 of the drain hopper 1 of the present invention is provided with a receiving port 40 to which three drain pipes extending from the water heater 2 can be connected. In addition, there is no drainage flow exposed to the outside between the drain pipe outlet and the drain hopper receptacle. Moreover, since the outlet 40 of the drain pipe holder part 4 can fix the drainage hose 20 extended from the water heater 2 by the frictional force of the inner surface of the outlet or the use of an adhesive, Even when the momentum of water is strong, the drainage does not enter the receiving port 40 of the drainage hopper 1 and scatters to the surroundings, or the drainage hose 20 does not break away from the receiving port 40.

  The shape of the receiving port 40 applied to the drain pipe holder part 4 is not particularly limited as long as it has a diameter and depth that can securely fix the drain pipe or drain hose to be inserted by friction or adhesive. A receiving port shape can be adopted. Further, the number of receiving ports does not need to be three at 60 ° intervals as in this embodiment, and the number and the arrangement are freely designed as long as there is an arrangement space above the drain pipe holder portion 4. It is usually sufficient to have 2 to 4 receptacles for one water heater. Moreover, you may arrange | position each receiving port from which a shape differs.

  Further, as can be understood with reference to FIG. 3, stopper means 41 comprising a stepped portion for preventing the connected drainage hose 20 from being excessively inserted inside the receiving port 40 of the drainage pipe holder portion 4. Is provided. The stopper means 40 is prevented from being inserted deeper than a predetermined position by coming into contact with the distal end portion of the drainage hose 20, and facilitates drainage pipe connectivity and workability in a narrow space. For the same purpose, a mesh-like partition (not shown) that traverses the inside may be provided at the same position of the receiving port 40 instead of the stepped portion.

  A cylindrical body 5 having an opening 51 whose side wall is covered with a mesh member 50 is disposed below the drain pipe holder 4. Expansion water and drainage water collected through the receiving port 40 by the drain pipe holder part 4 passes through the cylindrical body part 5 due to natural fall, but the mesh member 50 becomes resistance, so Hardly passes through the mesh member 50 and is scattered outside. Further, in the conventional drainage hopper, a mesh plate made of a mesh member or the like is provided in the drainage flow path to prevent invasion of dust such as pests and dead leaves, but in the present invention, the opening 51 using the mesh member 50 is provided. Since it is arranged outside the drainage channel, not inside the drainage channel, it can reliably prevent the invasion of debris such as insect pests and dead leaves without causing clogging due to dead leaves entering the opening as in the past. .

  In addition, when the cylindrical body 5 is clogged in the downstream drainage pipe 3 or the backflow of drainage occurs, the backflow water overflows through the opening 51 provided on the side wall thereof. Are reliably prevented from flowing back into the water heater 2 and the drainage hose 20 of the water heater.

  In other words, the body 5 having the opening 51 covered with the mesh member 50 in the drain hopper 1 of the present invention is between the drain hose 20 of the water heater 2 and the drain pipe 3 connected to the downstream side of the drain hopper. It works to cut the edges substantially. For this reason, the opening 51 formed in the side wall of the trunk portion 5 does not necessarily have to be formed from the mesh member 50 as shown in FIG. 3, but is simply an opening or slit as shown in FIGS. 4a and 4b. Or a thin plate member having an assembly of round holes or square holes as shown in FIGS. 5a and 5b. Moreover, you may provide the opening part 51 which consists of an aggregate | assembly of a slit, a round hole, or a square hole in the trunk | drum 5 side wall itself which consists of resin. However, in order to prevent the scattering of waste water flowing through the trunk portion 5 and the invasion of dust such as pests and dead leaves, it is most preferable to form the opening 51 with the mesh member 50 or cover it with the mesh member 50. It is effective.

  This is because the mesh member 50 acts as a substantial barrier against drainage and droplets that collide with the member substantially parallel or at an acute angle, and produces a rebound effect, whereas the level of the backflow water is low. This is because the drainage that flows so as to be substantially orthogonal to the mesh member 50 as it rises is not subjected to any resistance and allows smooth backflow water to be discharged.

  The cylindrical body 5 is preferably set to have an opening height d of at least 50 mm in consideration of the reliability of the edge cutting function in the drainage channel and the construction standards of the water heater manufacturer. In the example, the height is set to 50 mm.

  In addition, as shown in the figure, the cylindrical body portion 5 includes a drain pipe holder portion 4 and a drain pipe joint portion 6 to be described later in consideration of the inspection of the drain hopper 1, the internal cleaning, and workability during construction. It is detachably mounted between.

  Furthermore, a drainage pipe joint part 6 having a receiving port 60 connected to the downstream drainage pipe 3 outside the water heater is disposed at the lower part of the cylindrical body part 5. The drainage pipe joint part 6 receives drainage that naturally falls in the vertical direction from the water heater 2 by an invert part 61 in the drainage pipe joint part 6, and normally drains the drainage received by the invert part 61 in a horizontal direction. It functions to change the direction of discharge to the downstream drainage pipe 3 outside the water heater. For this reason, the drainage pipe joint part 6 usually has an elbow shape for converting the flow of drainage from the vertical direction to the horizontal direction as in this embodiment.

  Further, the drainage pipe joint portion 6 is covered with a mesh member 50 disposed on the upper portion of the drainage pipe joint portion 6 to prevent the rebounding of the expansion water and drainage water that naturally falls in the vertical direction from the water heater 2. It is important to design so that the droplet does not scatter from the body opening 51. For this reason, in this embodiment, the invert portion 61 of the drainage pipe joint portion is composed of a composite spherical shape having almost no horizontal surface at the drainage point of the drainage (see FIG. 3), and is shown in FIG. It is also possible to apply other types of drain pipe joints having different invert shapes.

  Further, a circular pipe called a mud ring 62 is integrally connected to the bottom of the drainage pipe joint part 6, so that the drainage hopper 1 of the present invention can be raised from the ground surface only by cutting the pipe. Since adjustment can be performed, workability during construction and installation stability of the drainage hopper 1 after construction are improved.

It is a typical connection diagram of a drainage hopper for a water heater according to an embodiment of the present invention. It is a top view of the drainage hopper for water heaters by this invention shown in FIG. It is a longitudinal cross-sectional view of the drainage hopper for water heaters by this invention shown by FIG. It is an expanded view of the thin-plate member which has the opening or slit applied to an opening part. It is an expanded view of the thin plate member which has the aggregate | assembly of the round hole or square hole applied to an opening part. It is a longitudinal cross-sectional view of the drainage pipe joint part of the drainage hopper for water heaters which concerns on the other Example by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heater drain hopper 2 Water heater 3 Downstream drain pipe 4 Drain pipe holder part 5 Body part 6 Drain pipe joint 20 Drain hose 40 Receptacle 41 Stopper means 50 Mesh member 51 Opening part 60 Receptacle 61 Invert part 62 Mud ring

Claims (1)

A drain pipe holder having a plurality of receptacles connected to the drain pipe of the water heater;
A drainage pipe joint portion having a receiving port or a differential port connected to a downstream drainage pipe outside the water heater, and an opening using a mesh member on the side wall for overflowing the backflow water, and the drainage pipe It has a cylindrical body part that is detachably mounted between the holder part and the drain pipe joint part.
The opening height of the trunk is at least 50 mm or more,
The outlet of the drain pipe holder part is provided with drain pipe stopper means inside thereof,
The drain pipe joint portion is an elbow shape for changing the direction of drainage by about 90 ° without forming a drain trap therein , and an invert made of a composite spherical shape to prevent the drainage from bouncing back. parts have, and the bottom of the drainage pipe joint unit, water heater drainage hopper cleavable circular pipe is characterized in that it is integrally formed.

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