JP4680673B2 - Valve for drain hose - Google Patents

Description

  The present invention relates to a drain hose connected to a short-pipe drain water discharge port protruding from a drain pan of an air conditioner such as a cooling device, and for draining the drain water to the outside. This invention relates to a drain hose drain valve for preventing outside air, odor, etc. from entering the room through the drain hose by being attached to the outside.

  In an air conditioner attached to an indoor wall or the like, the generated drain water is stored in a drain pan, and the drain pan's drain outlet is connected to the outlet through a flexible synthetic resin drain hose. As a result, the interior and exterior of the house are in communication with each other through the drain hose, so that the airtightness of the house cannot be maintained, and problems such as the entry of outside air and odor into the room only occur. In addition, when the ventilation fan is activated, there is a possibility that the room will be under negative pressure and the drain hose will be inhaled, causing the backflow of the drain water and the abnormal sound of the outside air being aspirated, which may be annoying. It was.

For this reason, for example, as described in Patent Document 1, a drain valve that blocks ventilation with outside air is connected to an end portion of a drain hose led out to the outdoor side. Specifically, this drain valve has a cylindrical valve body in which an upper end opening is formed at a connection port connected to a lower end of a drain hose led out from the outdoor side and a lower end opening is formed at a drain discharge port. The central portion of the valve body is formed as a large-diameter cylindrical portion, and the upper end portion of the small-diameter cylindrical portion forming the drain discharge port is protruded into the lower end portion of the large-diameter cylindrical portion, and the protruding upper end surface is formed. The valve seat is formed and a spherical valve is seated on the valve seat to block ventilation from the drain outlet into the drain hose, while the drain hose drains into the space above the valve seat of the valve body. When the water flows down, the spherical valve is lifted by buoyancy to discharge the drain water to the discharge port side.
JP-A-8-5093

  However, according to the drain valve as described above, the drain hose introduced up to the drainage basin is not connected to the drain discharge port at the lower end of the valve body, and the connection is made to the lower end of the drain hose suspended along the outer wall of the building. When using with the port connected and suspended from the lower end of the drain hose, when the wind pressure acts on the lower end discharge port of the valve body that is directly open to the outside air, the spherical valve lifts up due to the wind pressure. When the valve is opened, there is a possibility that outside air or the like may enter the room from the inside of the valve body through the drain hose. Furthermore, when the lower end portion of the drain hose is inclined unexpectedly, there is a problem in that the spherical valve is detached from the valve seat to the side and cannot serve as a drain valve. In addition, when negative pressure is generated in the airtight room due to the operation of the ventilation fan, there is a problem that an intake action is generated in the drain hose, the spherical valve is lifted by the intake force, and the drain water or the like flows backward. .

  Such a problem can be solved by adopting a structure in which the lower end portion of the upper end connection port of the valve body is protruded into the large-diameter cylindrical portion of the valve body, and the protruding opening end is closed by a disc-shaped elastic valve element. However, since the open end is opened horizontally so as to cross the valve body, the elastic valve body that closes the open end so as to be freely opened and closed is also arranged horizontally. The load due to the drain water flowing in from the drain hose acts evenly on the entire horizontal upper surface of the elastic valve element. Therefore, the outer periphery of the elastic valve element is bent with the center as a fulcrum by the load. For this purpose, a considerable amount of drain water must be retained, and smooth drainage becomes difficult.

  Furthermore, in any drainage valve, when foreign matter mixed in the drain water collects or becomes clogged on the elastic valve body, a spherical valve or elastic valve body is installed in the valve body to remove it by cleaning. Therefore, the work of disassembling the valve body and the connection from the drain hose is required, and the work is extremely complicated and is left without cleaning for a long time.

  The present invention has been made in view of such problems, and the object of the present invention is to reliably prevent the outside air and the like from entering the room through the drain hose from the outside with a simple structure and drain water. It is an object of the present invention to provide a drain hose drain valve that can be smoothly discharged and that does not need to be removed from the drain hose, and that can easily clean the elastic valve body and the inside.

  In order to achieve the above object, the drain hose drain valve of the present invention is connected to a drain hose led out from the indoor side to prevent the outside air from entering the indoor side as described in claim 1. This is a valve in which a top and bottom opening communicates with the connection port and the drain water discharge port, respectively, in a cylindrical valve body formed with a drain hose connection port and a drain water discharge port, respectively. An intermediate drain water discharge port opened obliquely downward is provided, and a valve mounting opening is provided in the peripheral wall portion of the valve body facing the intermediate drain water discharge port. A side cover member projecting a tongue-shaped elastic valve body, which is inclined at the same angle as the intermediate drain water discharge port from the upper end to the inside from the upper end, is detachably mounted, and the elastic valve body is attached. Intermediate drain water discharge port It has a structure which is open to be able to not close contact with the exhaust Mizuguchi.

  In the drain hose valve configured as described above, the invention according to claim 2 divides the valve body into two parts, an upper half part and a lower half part that can be connected to each other, and the drain hose is provided in the upper half part. A rectangular tube-shaped inner cylinder part projecting downward from the lower end of the connection port is formed in a rectangular shape with an opening width slightly smaller than the connection port, and the lower end of the inner cylinder part is opened obliquely downward. On the other hand, an outer cylinder part is formed in the upper part of the lower half part and the inner cylinder part on the upper half part side is inserted into the upper part of the lower drain part. A valve mounting opening is provided in the peripheral wall portion facing the intermediate drain water discharge port.

  Further, the invention according to claim 3 is characterized in that the side lid member and the elastic tilt valve are made of soft synthetic resin or rubber, and the side lid member is detachably attached to the opening for valve attachment. In addition to being closed, the rectangular elastic tilt valve protrudes obliquely downward from the upper end of the inner surface of the side lid member at the same angle as the elastic tilt valve. The intermediate inclined discharge port is elastically contacted with the opening peripheral end surface of the intermediate inclined discharge port, the lower end portion is separated from the lower end portion of the intermediate inclined discharge port with the upper end portion as a fulcrum, and the intermediate inclined discharge port can be opened. The lid member has a vent hole communicating with the drain discharge port side.

  According to the invention which concerns on Claim 1, it is a valve | bulb connected to the lower end part of the drain hose derived | led-out outdoors from the indoor side, Comprising: An upper and lower opening part is formed in the connection port and drain water discharge port of a drain hose, respectively In the cylindrical valve body, an upper and lower opening end is connected to the connection port and the drain water discharge port, and an intermediate drain water discharge port that opens obliquely downward is provided. The elastic valve element that closes the middle drain water discharge port ensures that outside air enters the drain hose from the drain water discharge port at the lower end of the valve body. The airtightness of the room can be maintained, and when the ventilation fan is operated, even if the room is under negative pressure and the suction force is generated in the drain hose, the elastic valve body can water Holds state reliably and closed by crimping actively to the outlet, it can be outside air or the like is prevented from entering the drain hose.

  Further, when drain water is discharged from the air conditioner side into the valve body through the drain hose, it is prevented from flowing out to the discharge port side by the elastic valve body that temporarily closes the intermediate drain water discharge port. However, since this intermediate drain water discharge port is opened obliquely downward, the drain water travels along the inclined upper surface of the elastic valve body that closes the intermediate drain water discharge port, and the lower end side of the intermediate drain water discharge port Therefore, the load of the drain water can be concentrated on the lower end side of the discharge port, so that the elastic valve body is bent in the direction in which the lower end is easily opened by the load with the upper end as a fulcrum. The drain water can be discharged smoothly.

  Further, a valve mounting opening is provided in the peripheral wall portion of the valve main body so as to face the intermediate drain water discharge port provided in the valve main body, and the valve mounting opening has an inner surface facing inward from the upper end. A side cover member projecting a tongue-shaped elastic valve body inclined at the same angle as the intermediate drain water discharge port is detachably mounted, and the elastic valve body is attached to the intermediate drain water discharge port. Since the drain outlet is close enough to be openable, the elastic valve body can be connected from the outside with the valve body connected to the drain hose without removing the valve body from the drain hose and without disassembling the valve body. Only the side cover member having the valve can be easily removed. Therefore, the dust attached to the elastic valve body can be easily removed, and the valve is opened through the valve mounting opening that is opened in the peripheral wall of the valve body. The inside of the body can be easily and reliably cleaned, and after cleaning, the intermediate drain water discharge port can be easily formed by attaching a side cover member having an elastic valve body to the valve mounting opening from the outside. It can be in a closed use state.

  According to the invention which concerns on Claim 2, the said valve | bulb main body is divided | segmented into the upper half part and lower half part which can mutually be connected, and the upper half part is below this from the lower end of the connection port of a drain hose. A rectangular tube-shaped inner tube portion whose opening width is slightly smaller than the connection port is protruded, and the lower end of the inner tube portion is formed in a rectangular intermediate drain water discharge port opened obliquely downward. In addition, an outer cylinder part into which the upper half side inner cylinder part is inserted is formed at the upper part of the lower half part, and a peripheral wall facing the intermediate drain water discharge port of the inner cylinder part in the outer cylinder part Since the valve mounting opening is provided in the part, it has an inner cylinder part having a rectangular intermediate drain water discharge port opened obliquely downward at the lower end and an outer cylinder part surrounding the inner cylinder part, and this outer cylinder part A valve body provided with a valve mounting opening provided on the peripheral wall of the cylinder can be easily manufactured by molding. Can be, it can be assembled drainage Parubu easily with Gawafuta member having the elastic valve body are formed separately with suitable mass production.

  Further, the side cover member is made of soft synthetic resin or rubber as described in claim 3, and protrudes from the upper end of the inner surface of the side cover member obliquely downward to the rectangular elastic valve body. As described above, the lower end of the elastic valve body is elastically downward from the lower end of the intermediate drain water discharge port due to the weight of the drain water staying on the elastic valve body with the upper end of the elastic valve body as a fulcrum. Since the intermediate drain inclined discharge port can be opened easily and reliably and drain water can be discharged, and the side lid member has a vent hole communicating with the drain water discharge port side. The wind blown into the valve body from the drain water discharge port at the lower end of the valve body during strong winds can be smoothly discharged to the outside through the vent hole along the inclined lower surface of the elastic valve body, generating abnormal noise. Prevent the valve body from Can be, also, even penetrate small insects from the drain outlet, without entering the drain hose side, it can be derived again to the outside through the vent hole.

  Next, a specific embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 3, the valve main body 1 is made of a transparent or translucent hard synthetic resin, and the upper end opening is formed in the drain hose A (FIG. 4). And a lower end opening is formed in the drain discharge port 3 and is formed into a fixed-length cylindrical shape.

  Inside the valve body 1 in the middle portion in the length direction, an upper end opening communicates with the connection port 2 and a lower end opens to an intermediate drain discharge port 4 that opens obliquely downward toward the drain discharge port 3. A short rectangular tube-shaped inner tube portion 5 is integrally formed, and an intermediate portion in the length direction of the valve body 1 surrounding the inner tube portion 5 is defined as an outer tube portion 6. A valve mounting opening 7 having a front rectangular shape is provided in a peripheral wall portion facing the intermediate drain water discharge port 4 in the cylindrical portion 6, and the lower opening end of the intermediate inclined discharge port 4 is formed on the inner surface of the valve mounting opening 7. A side cover member 9 integrally provided with a tongue-shaped elastic valve body 8 which is in close contact with the opening and closing is detachably mounted.

  The valve body 1 is divided into two parts, an upper half 1a and a lower half 1b, which can be connected in series with each other. The upper half 1a is a cylinder having an upper end opening formed in the connection port 2. A short tube portion 2 ′ having a shape and the inner tube portion 5 projecting downward from the lower end of the short tube portion 2 ′. The inner cylinder part 5 forms an opening 2b having a rectangular plane on the bottom wall surface 2a of the short cylinder part 2 ', leaving the outer peripheral part of the bottom wall surface 2a and having an opening width slightly smaller than that of the connection port 2. The upper end opening of the inner tube portion 5 having the rectangular tube shape is integrally connected to the opening 2b, and the inner tube portion 5 projects downward from the upper end opening. The intermediate drain having a rectangular shape opened obliquely from the upper end of the vertical front wall surface 5a toward the center of the lower ends of the side wall surfaces 5b and 5b and inclined obliquely downward from the upper end to the lower end While forming the discharge port 4, the lower end part of the rear wall surface 5c of the inner cylinder part 5 is formed in the inclined bottom face 5d inclined diagonally forward toward the lower end edge of the intermediate drain water discharge port 4.

  Furthermore, triangular projections 2c and 2c are provided on both sides of the front peripheral edge of the bottom wall surface 2a of the cylindrical short tube portion 2 ', and the shape of the bottom wall surface 2a is changed to the latter half portion of the short tube portion 2 A semicircular shape with the same outer diameter as', with the front half formed in a quadrilateral shape, and a projecting edge 2d with a constant height (length) is formed on the outer peripheral edge of the bottom wall surface 2a downward. ing.

  On the other hand, the lower half 1b of the valve body 1 is formed at the upper cylindrical portion 6 which accommodates the upper half of the valve body 1 in the state where the inner cylindrical portion 5 on the upper half 1a side protrudes from the upper end opening. At the same time, a lower part is formed in the drain water discharge cylinder part 10 in which the upper end opening communicates with the lower end of the outer cylinder part 6, and the lower open end of the drain water discharge cylinder part 10 is formed in the drain water discharge port 3. ing. The outer cylinder part 6 is formed in the same shape as the bottom wall surface 2a in the short cylinder part 2 'on the upper half part 1a side in the shape of the cross section. That is, the rear wall portion of the outer cylindrical portion 6 is formed on a semicircular curved wall surface 6a, and is formed on front both side wall surfaces 6b and 6b parallel to each other from both ends of the rear wall portion toward the front. Between the front ends of the front side wall surfaces 6b and 6b, a front rectangular front wall surface 6c is formed.

  Furthermore, it fits into the projecting edge portion 2d provided on the outer peripheral edge of the bottom wall surface of the short cylindrical portion 2 'on the upper half portion 1a side upward toward the inner peripheral edge of the upper end opening of the outer cylindrical portion 6. A mating projecting edge 6d is formed, and the upper half 1a and the lower half 1b are detachably connected by fitting these projecting edges 2d and 6d together. Further, the valve mounting opening 7 having a front rectangular shape is provided on the vertical rectangular front wall surface 6c of the outer cylinder portion 6 while leaving the four-side circumferential wall portion.

  The side cover member 9 having the elastic valve body 8 mounted in the valve mounting opening 7 is made of a plate material made of a soft synthetic resin (elastomer) having a constant thickness, and its four-side outer peripheral edges are the valve mounting. It is formed in a rectangular shape having a size that can be fitted in the opening 7 for use, and has the same inclination angle as that of the intermediate drain water discharge port 4 from the upper end portion of the inner surface (rear surface) toward the center of the outer cylindrical body 6. Therefore, the elastic valve body 8 is provided so as to protrude obliquely downward. The elastic valve body 8 is formed in the shape of a thin tongue-like piece having a rectangular front shape that closes the intermediate drain water discharge port 4 so as to be openable and closable by elastically contacting the lower end edge of the intermediate drain water discharge port 4. At the same time, the side lid member 9 is formed with locking protrusions 9a and locking grooves 9b that are detachably locked to the upper and lower edges of the valve mounting opening 7 on the upper and lower end surfaces thereof. The lid member 9 has a vent hole 11 penetrating between the front and back surfaces (inner and outer surfaces). The elastic valve body 8 may be made of rubber.

  The side cover member 9 having the elastic valve body 8 formed in this way has the valve mounting opening in the valve body 1 assembled by connecting the upper half 1a and the lower half 1b and fixing them together. The elastic valve body 8 is inserted from 7 and the elastic valve body 8 is elastically brought into contact with the lower end of the intermediate drain water discharge port 4 to close the intermediate drain water discharge port 4 and the upper end of the side cover member 9. A drain hose drainage valve is constructed by engaging the locking protrusion 9a and the lower end locking groove 9c with the upper and lower edges of the valve mounting opening 7 and mounting the valve mounting opening 7 respectively. Yes.

  As shown in FIG. 4, this drain hose drain valve connects the upper end connection port 2 to the lower open end of the drain hose A which is led out from the room to the outside and is suspended along the outer wall surface of the building. By wrapping tape B or the like around the connection portion, the connection is made impossible. In addition, the upper end part of the drain hose A is connected to the drain outlet of the drain pan of the air conditioner arrange | positioned indoors.

  In such a use state, when the drain water generated by the operation of the air conditioner is discharged to the outside through the drain hose A, the drain water flowing down in the drain hose A is connected to the lower end of the drain hose A. A rectangular tube-shaped inner cylinder part enters into the short cylinder part 2 'from the upper end connection port 2 in the valve body 1 of the drainage valve and further passes through an opening 2b opened in the bottom wall surface 2a of the short cylinder part 2'. 5 flows down. At this time, an intermediate drain water discharge port 4 that is inclined obliquely inward toward the lower side is provided on the front wall surface 5a of the inner cylinder portion 5, and the intermediate drain water discharge port 4 extends from the upper end to the lower end. The lower end portion of the rear wall surface 5c of the inner cylinder portion 5 is closed by an elastic valve body 8 that is inclined inwardly at the same inclination angle as the discharge port 4 toward the portion. The drain water that has flowed into the inner cylindrical portion 5 travels along the upper surface of the elastic valve body 8 and the inclined bottom surface 5b so as to be elastic. It temporarily stays in the space 12 having a V-shaped cross section between the valve body 8 and the inclined bottom surface.

  The load due to the drain water staying in the space portion 12 acts intensively on the lower end portion of the elastic valve body 8 having the upper end as a fulcrum and the lower end side being a free end, and a small amount of drain water stays in the space portion 12. Even so, the lower end portion of the elastic valve body 8 easily bends downward with the upper end as a fulcrum due to the load to open the intermediate drain water discharge port 4, and from the drain water discharge port 3 at the lower end through the drain water discharge tube portion 10. It is discharged outside.

  In addition, since the intermediate drain water discharge port 4 of this drain valve is normally sealed by an elastic valve body 8, outside air, odor, etc. are drained from the lower end drain water discharge port 4 of the valve body 1 that opens to the outside. Intrusion into the hose A side can be prevented, and the wind blown into the drain water discharge port 4 through a vent hole 11 provided in the side cover member 9 mounted on the valve mounting opening 7 even in a strong wind. Since it is discharged to the outside again, the airtightness in the room can be maintained. Furthermore, even when negative pressure is generated in the airtight chamber and the intake force is generated in the drain hose A when the ventilation fan is operated, the elastic valve body 8 is more firmly connected to the intermediate drain water by the intake force. Since it press-fits to the discharge port 4, there is no possibility that outside air or the like will enter. Further, even if a small insect enters from the drain discharge port 4, it can be released to the outside from the through hole 11 provided in the side lid member 9.

  During the long-term use of this drain water drain valve, the inside of the valve body 1 and the elastic valve body 8 are contaminated by foreign matters mixed in the drain water, or foreign matters adhere to the drain water drain valve, and the smooth operation cannot be performed. In this case, without removing the valve body 1 from the lower end of the drain hose A, the elastic valve body 8 is removed from the valve mounting opening 7 provided on the front wall surface of the outer cylinder portion 6 of the valve body 1, thereby The foreign substance adhering to the body 8 can be removed and cleaned, and the inside of the valve body 1 is easily cleaned by water washing or the like through the valve mounting opening 7 opened by removing the elastic valve body 8. be able to.

  Further, in the mounting operation of the elastic valve body 8 with respect to the valve mounting opening 7, the locking protrusion 9 a and the locking groove 9 b formed on the upper and lower ends of the side lid member 9 are provided above and below the valve mounting opening 7. This can be done easily by fitting and locking to the end face. In the above embodiment, the outer cylinder portion 6 of the valve body 1 has a semicircular cross section in the rear half and a quadrilateral front half in the shape of the outer half. You may keep it. In this case, as a matter of course, the upper end projecting edge portion of the outer cylinder portion and the lower end projecting edge portion of the short cylinder portion 2 'on the upper half 1a side in which the upper end projecting edge portion is fitted are also formed in a planar rectangular shape. The

The vertical side view of the drain valve for drain hoses. FIG. FIG. The front view which shows a use condition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve body 2 Connection port 3 Drain discharge port 4 Intermediate drain water discharge port 5 Inner cylinder part 6 Outer cylinder part 7 Valve mounting opening part 8 Elastic valve body 9 Side cover member
11 Vent

Claims (3)

  A valve that is connected to a drain hose led out from the room side to the outside to prevent the outside air from entering the room side, and has upper and lower openings formed at the drain hose connection port and the drain water discharge port, respectively. An intermediate drain water discharge port which is opened obliquely downward with the upper and lower opening ends communicating with the connection port and the drain water discharge port, respectively, is opposed to the intermediate drain water discharge port. A valve mounting opening is provided in the peripheral wall portion of the valve body, and a tongue piece that is inclined at the same angle as the intermediate drain water discharge port from the upper end to the inner surface on the inner surface of the valve mounting opening. A drain hose characterized in that a side cover member projecting an elastic valve body having a shape is detachably mounted, and the elastic valve body is in close contact with the intermediate drain water discharge port so that the drain port can be opened. Drain valve.   The valve body is divided into an upper half and a lower half that can be connected to each other. The upper half of the valve body has an opening width that extends downward from the lower end of the drain hose connection port. A small rectangular tube-shaped inner cylinder part is projected, and the lower end of the inner cylinder part is formed in a rectangular intermediate drain water discharge port opened obliquely downward, while the upper part of the lower half part has the above An outer cylinder part into which the inner cylinder part on the upper half part side is formed is formed, and a valve mounting opening is provided in a peripheral wall part of the outer cylinder part facing the intermediate drain water discharge port of the inner cylinder part. The drainage valve for drain hoses according to claim 1, wherein   The side lid member and the elastic valve body are made of soft synthetic resin or rubber, and the side lid member is detachably attached to the valve mounting opening to close the opening. The rectangular elastic valve body protrudes obliquely downward from the upper end of the inner surface, and the four-side peripheral edge of the elastic valve body is brought into elastic contact with the opening peripheral end surface of the intermediate inclined discharge port, and the upper end thereof is a fulcrum. The lower end portion of the intermediate drain water discharge port is elastically bent downward from the lower end portion of the intermediate drain water discharge port due to the weight of the drain water staying on the elastic valve body so that the intermediate drain inclined discharge port can be opened. The drain hose drain valve according to claim 1 or 2, wherein a vent hole communicating with the drain water discharge port side is formed in the side lid member.

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