JP2022030268A - Method for inspecting connection failure of drain piping - Google Patents

Abstract

To provide a method for inspecting a connection failure of drain pipping capable of inspecting whether there are connection failures of drain piping in a plurality of air conditioning devices all at once.SOLUTION: In drain piping in which a plurality of air conditioning devices 1, 1 are connected to a main drain pipe 4 via drain channels 5, 5, a bent joint 9 is provided in an apex part of each drain channel 5. The bent joint 9 comprises an internal space 9a including a bent flow passage, an opening 9b making the internal space 9a face the outside, a drainage inflow part 9c, a drainage outflow part 9e, a valve mechanism 9g provided in the drainage inflow part 9c and composed of a check valve, and a lid body 10 for closing the opening 9b. A downstream side of the main drain pipe 4 is blocked, and out of a plurality of drain channels 5, 5 the lid body 10 is mounted to the openings 9b of the bent joints 9 of other drain channels 5 except one drain channel 5. In the bent joint 9 of the one drain channel 5, water is stored in the internal space 9a from the opening 9b, and then whether a water level of the stored water changed is confirmed.SELECTED DRAWING: Figure 9

Description

The present invention relates to a method for confirming poor connection of a drain pipe in which a plurality of air conditioners are connected to a drainage main pipe via a drainage channel.

Conventionally, some drain pipes connected to an air conditioner include a drain-up pipe (see, for example, Patent Document 1). As shown in FIG. 19, the drain pipe 102 includes a gradient pipe portion 103, which is the main configuration thereof, and an upper detour portion 104 forming a drain-up pipe between the gradient pipe portion 103 and the air conditioner 101. It was composed. Here, the upward detour portion 104 has an ascending portion 105 extending upward from the drain port 101a of the air conditioner 101, and a descending portion 106 extending upward from the upper end portion of the ascending portion 105 toward the inlet portion 103a of the gradient pipe portion 103. However, the air conditioner 101 was provided with a pump for draining up. A joint 107 is provided between the ascending portion 105 and the descending portion 106. The joint 107 has an inspection port 107a, and a lid member 108 is attached to the inspection port 107a so as to be openable and closable. Therefore, after the construction of the drain pipe 102 was completed, a water leakage test could be performed by pouring water from the inspection port 107a of the joint 107. The details of this water leakage test are not disclosed in Patent Document 1, but in general, after adopting a transparent pipe for the descending portion 106, water is poured from the inspection port 107a to the middle of the descending portion 106 (transparent pipe). By confirming that the water level was maintained for a certain period of time, it was judged that there was no connection failure downstream of it.

JP 2012-233675

By the way, the water leakage test is a water leakage test of the drain pipe 102 in one air conditioner 101, and is a water leakage test of the drain pipe 102 in a plurality of air conditioners 101, 101 (air conditioning equipment) (presence or absence of connection failure). It was not considered to do (confirmation) all at once.

The present invention has been made to solve the above-mentioned conventional drawbacks, and the purpose of the present invention is to confirm the presence or absence of connection failure of drain pipes in a plurality of air conditioners at once. The purpose is to provide a method for confirming poor connection.

The method for confirming a connection defect of a drain pipe according to the present invention has the following configuration in order to achieve the above object. That is,
In the method for confirming a connection failure of a drain pipe according to the invention of claim 1, the plurality of air conditioners drain water through a drainage channel heading downward after detouring upward from each drain discharge port of the plurality of air conditioners. This is a method for confirming poor connection in the drain pipe connected to the main pipe, and the upstream drainage pipe and the downstream drainage pipe forming the drainage channel are connected to the top portion of each drainage channel and one of the drainage channels. A bent joint to be a part is provided. The bent joint has an internal space having a bent flow path, an opening that faces the internal space to the outside, a drainage inflow portion that communicates with the internal space, and a drainage inflow portion to which the upstream drainage pipe is connected. The upstream side connection port on the side, the drainage outflow part communicating with the internal space, the downstream side connection port on the drainage outflow part side to which the downstream side drainage pipe is connected, and the drainage inflow part are always closed. It is provided with a valve mechanism for opening the drainage inflow portion when there is an inflow of drainage from the upstream drainage pipe, and a lid detachably attached to the opening so as to close the opening. Here, it is assumed that the drainage main pipe is closed downstream of the drainage channel connected to the most downstream side of the drainage main pipe. Then, among the plurality of drainage channels, the bent joints of the other drainage channels other than one drainage channel are in a state where the lid is attached to the opening thereof. Therefore, in the bent joint of the drainage channel 1, water is poured from the opening until water is stored in the internal space, and then, the presence or absence of a change in the water level of the stored water is confirmed to check the presence or absence of a change in the water level of the drain pipe. Check for poor connection.

According to this drain pipe connection failure confirmation method, when water is poured into the internal space from the opening in the bent joint of one drainage channel among a plurality of drainage channels, the water is discharged to the upstream side of the drainage channel 1 by the valve mechanism. It is prevented from flowing back to the drainage pipe, and proceeds to the drainage main pipe through the drainage pipe on the downstream side of the drainage channel 1. Then, when the water reaches the closed portion of the drainage main pipe, the drainage main pipe rises, and further rises on the downstream drainage pipe of the drainage channel 1 and is stored in the internal space of the bent joint in the drainage channel 1. Then, on the downstream side of the other drainage channel, the air is sealed by the valve mechanism and the lid in the bent joint of the other drainage channel and the rising water, and the water is in a state where the pressure with the air is balanced. The rise stops. Therefore, if there is no drop in the water level in the bent joint of the drainage channel after a certain period of time, there may be a connection failure in the area filled with water or the area where the air is sealed, or the airtightness of the lid or valve mechanism. It is judged that there is no defect.

Further, the method for confirming a connection failure of the drain pipe according to the invention according to claim 2 is the method for confirming a connection failure of the drain pipe, the said plurality of air conditioners via a drainage channel heading downward after detouring upward from each drain discharge port of the plurality of air conditioners. Is a method for confirming poor connection in the drain pipe connected to the drainage main pipe, and the upstream drainage pipe and the downstream drainage pipe forming the drainage channel are connected in the middle of each drainage channel of the drainage channel. A valve joint to be a part is provided, and a water storage unit connected to the drainage main pipe is provided separately from the drainage channel. The valve joint constantly closes the internal joint flow path, the upstream connection port to which the upstream drainage pipe is connected, the downstream connection port to which the downstream drainage pipe is connected, and the joint flow path. However, it is provided with a valve mechanism that opens the joint flow path when there is an inflow of drainage from the upstream drainage pipe. The water storage section extends upward from the connection point to the drainage main pipe, and has an opening at the upper end portion thereof so that the inside of the water storage section faces the outside. Here, it is assumed that the drainage main pipe is closed downstream from the drainage channel connected to the most downstream side of the drainage main pipe and downstream from the water storage portion. Therefore, in the water storage unit, water is poured from the opening until the water is stored inside the water storage unit, and then, by checking whether or not the water level of the stored water has changed, the presence or absence of a connection failure of the drain pipe is performed. To confirm.

According to this drain pipe connection failure confirmation method, when water is put into the inside of the water storage part from the opening in the water storage part, the water passes through the water storage part and proceeds to the drainage main pipe. Then, when the water reaches the closed portion of the drainage main pipe, the drainage main pipe rises, and further the water storage portion rises and is stored inside the drainage main pipe. Then, on the downstream side of the drainage channel, the air is sealed by the valve mechanism in the valve joint of the drainage channel and the rising water, and the water stops rising when the pressure with the air is balanced. Therefore, if the water level does not drop in the water storage section after a certain period of time, it is judged that there is no connection failure or airtightness of the valve mechanism in the range filled with water or the range where the air is sealed. ..

Further, the method for confirming a connection failure of the drain pipe according to the third aspect of the present invention is the method for confirming a connection failure of the drain pipe, wherein the drain pipe is detoured upward from the drain discharge port of each of the plurality of air conditioners and then goes downward through the drainage channel. Is a method for confirming poor connection in the drain pipe connected to the drainage main pipe, and the first upstream drainage pipe forming the drainage channel at the top of at least one drainage channel among the plurality of drainage channels and A bent joint is provided to which a first downstream drainage pipe is connected and becomes a part of the drainage channel, and the plurality of the drainage channels have drainage channels to which the bent joint is not provided. A valve joint is provided in the middle of the above, in which a second upstream drainage pipe and a second downstream drainage pipe forming the drainage channel are connected to form a part of the drainage channel. The bent joint has an internal space having a bent flow path, an opening that faces the internal space to the outside, a drainage inflow portion that communicates with the internal space, and the drainage pipe to which the first upstream drainage pipe is connected. The upstream connection port on the inflow section side, the drainage outflow section communicating with the internal space, the downstream connection port on the drainage outflow section side to which the first downstream drainage pipe is connected, and the drainage inflow section. A valve mechanism that is normally closed and opens the drainage inflow portion when there is an inflow of drainage from the first upstream drainage pipe, and a lid that is detachably attached to the opening so as to close the opening. Be prepared. The valve joint includes an internal joint flow path, an upstream connection port to which the second upstream drainage pipe is connected, a downstream connection port to which the second downstream drainage pipe is connected, and the joint flow path. Is always closed, and a valve mechanism is provided to open the joint flow path when there is an inflow of drainage from the second upstream drainage pipe. Here, it is assumed that the drainage main pipe is closed downstream of the drainage channel connected to the most downstream side of the drainage main pipe. When there are a plurality of drainage channels provided with the bent joints, the bent joints of the other drainage channels other than one drainage channel are in a state where the lid is attached to the opening thereof. And. Therefore, in the bent joint of the drainage channel 1, water is poured from the opening until water is stored in the internal space, and then, the presence or absence of a change in the water level of the stored water is confirmed to check the presence or absence of a change in the water level of the drain pipe. Check for poor connection.

According to this drainage pipe connection failure confirmation method, when water is poured into the internal space from the opening in the bent joint of one drainage channel among the plurality of drainage channels, the water is supplied to the first drainage channel of the first drainage channel by the valve mechanism. It is prevented from flowing back to the upstream drainage pipe, and proceeds to the drainage main pipe through the first downstream drainage pipe of the drainage channel 1. Then, when the water reaches the closed portion of the drainage main pipe, the drainage main pipe rises, and further rises on the first downstream side drainage pipe of the drainage channel 1 and is stored in the internal space of the bent joint in the drainage channel 1. To. Then, on the downstream side of the other drainage channel, the valve mechanism in the valve joint of the other drainage channel (if there are a plurality of drainage channels provided with the bending joint, the valve mechanism and the lid of the other drainage channel in the bending joint). The air is sealed by the body and the valve mechanism in the valve joint) and the rising water, and the water stops rising when the pressure with the air is balanced. Therefore, if there is no drop in the water level in the bent joint of the drainage channel after a certain period of time, there may be a poor connection, a poor airtightness of the valve mechanism, etc. in the range filled with water or the range where the air is sealed. It is judged that there is no such thing.

Further, the method for confirming a connection defect of a drain pipe according to the invention according to claim 4 is the method for confirming a connection defect of a drain pipe according to claim 1 or 3, wherein the opening in the bent joint of the drainage channel of 1. When water is poured from the water, the valve mechanism of the bent joint is covered with a covering member, and then water is poured. As a result, in the bent joint of the drainage channel 1, when water is poured into the internal space from the opening, the water flows back to the drainage pipe on the upstream side of the drainage channel of 1, and the covering member covering the valve mechanism ensures that the water flows back. Be prevented.

According to the drain pipe connection failure confirmation method according to the present invention, there are the following effects.

According to the drain pipe connection failure confirmation method according to claim 1, each drainage channel is provided with a bent joint provided with a valve mechanism and a lid, and water for confirming the connection failure is supplied to the drainage channel 1. By inserting it through the opening of the bent joint, it is possible to check at once whether or not there is a connection failure of the drain pipe in multiple air conditioning equipment.

According to the method for confirming a connection failure of a drain pipe according to claim 2, a valve joint provided with a valve mechanism is provided in each drainage channel, and a water storage unit connected to the drainage main pipe is provided to confirm the connection failure. By pouring water for this purpose through the opening of the water storage unit, it is possible to check at once whether or not there is a connection failure of the drain pipes in a plurality of air conditioners.

According to the drain pipe connection failure confirmation method according to claim 3, a bending joint having a valve mechanism and a lid or a valve joint having a valve mechanism is provided in each drainage channel to confirm the connection failure. By pouring water for this purpose through the opening of the bent joint, it is possible to check at once whether or not there is a connection failure of the drain pipe in a plurality of air conditioners.

It is sectional drawing of the drainage channel of the 1st Embodiment of this invention. Similarly, it is a cross-sectional view of a bent joint. Similarly, it is a perspective view which provided the assembly part in the main body part in a bent joint. Similarly, it is a plan view which provided the assembly part in the main body part in a bent joint. Similarly, it is a perspective view of a connecting body in a bent joint. Similarly, it is a perspective view of a mounting body in a bent joint, (a) is a perspective view seen from the front side, and (b) is a perspective view seen from the back side. Similarly, it is a perspective view of a valve body. Similarly, it is a perspective view of a lid body. Similarly, in the drain pipe, the drainage channel 1 is a drainage channel located on the most upstream side, and is a partially cutaway schematic view showing a state in which water is poured from the opening of the bent joint of the drainage channel. Similarly, it is a partially broken schematic diagram showing a state in which water is leaking due to a poor connection of the second joint. Similarly, in the bent joint of the drainage channel located in the middle, air is released due to poor connection and poor airtightness of the lid, and in the bent joint of the drainage channel located on the most downstream side, air is released due to poor airtightness of the valve mechanism. It is a schematic diagram which shows the state where is missing, and is partially broken. It is sectional drawing of the valve joint schematically shown in the 2nd Embodiment of this invention. Similarly, in the drain pipe, the water storage section is provided upstream from the drainage channel located on the most upstream side, and a partially broken schematic diagram shows a state in which water is poured from the opening of the water storage section. In the drain pipe according to the third embodiment of the present invention, one drainage channel is set as a drainage channel located in the middle, and a part of the drainage channel is broken, indicating a state in which water is poured from the opening of the bent joint of the drainage channel. It is a schematic diagram. It is a modification of the first embodiment, and is the figure corresponding to FIG. 9 in which the drainage channel 1 is a drainage channel located in the middle. It is a modification of the first embodiment, and is the figure corresponding to FIG. 9 in which the drainage channel 1 is the drainage channel located on the most downstream side. It is a modification of the second embodiment, and is the figure corresponding to FIG. 13 in which the water storage part is provided between the drainage channel located in the middle and the drainage channel located on the most downstream side. FIG. 3 is a cross-sectional view of a bent joint in one drainage channel according to another embodiment of the present invention. It is a front view which shows the conventional drain pipe.

Hereinafter, a mode for carrying out the method for confirming a connection defect of the drain pipe according to the present invention will be described with reference to the drawings.

1 to 11 show the first embodiment of the present invention. Reference numeral 1 in the figure indicates an air-conditioning device such as an air-conditioning device. 1a indicates a drain discharge port of the air conditioner 1. Reference numeral 3 indicates a support such as a hanging bolt. 4 indicates a drainage main pipe. 5 indicates a drainage channel. Reference numeral 6 indicates an upstream drainage pipe in the drainage channel 5. Reference numeral 7 indicates a downstream drainage pipe in the drainage channel 5. 9 indicates a bent joint.

The method of confirming the connection failure of the drain pipe is as follows: Is a method for confirming poor connection in the drain pipe connected to the drainage main pipe 4. Here, a bent joint 9 is provided at the top of each drainage channel 5 to which an upstream drainage pipe 6 and a downstream drainage pipe 7 forming the drainage channel 5 are connected and become a part of the drainage channel 5.

The bent joint 9 is connected to an internal space 9a having a bent flow path, an opening 9b that faces the internal space 9a to the outside, a drainage inflow portion 9c that communicates with the internal space 9a, and an upstream drainage pipe 6. , The upstream connection port 9d on the drainage inflow section 9c side, the drainage outflow section 9e communicating with the internal space 9a, the downstream connection port 9f on the drainage outflow section 9e side to which the downstream drainage pipe 7 is connected, and drainage. A valve mechanism 9g that normally closes the inflow portion 9c and opens the drainage inflow portion 9c when there is an inflow of drainage from the upstream drainage pipe 6, and is detachably attached to the opening 9b so as to close the opening 9b. A lid 10 is provided. In the illustrated embodiment, the upstream side connection port 9d has at least a part of the drainage inflow part 9c inside, and the downstream side connection port 9f has at least a part of the drainage outflow part 9e inside. The upstream drainage pipe 6 is connected to the upstream side connection port 9d on the drainage inflow part 9c side, which has at least a part of the drainage inflow part 9c inside, and the downstream side drainage pipe 7 is a drainage outflow part. It is connected to the downstream connection port 9f on the drainage outflow portion 9e side, which has at least a part of the 9e inside.

Here, as shown in FIG. 9, it is assumed that the drainage main pipe 4 is blocked by, for example, a water stop valve 4a, downstream of the drainage channel 5 connected to the most downstream side of the drainage main pipe 4. The bent joint 9 of the other drainage channels 5 other than the drainage channel 5 (the drainage channel located on the most upstream side in the illustrated embodiment) among the plurality of drainage channels 5 and 5 has an opening 9b. It is assumed that the lid 10 is attached to the lid. Therefore, in the bent joint 9 of the drainage channel 5 of the above 1, water is poured from the opening 9b until the water is stored in the internal space 9a, and then the drain pipe is checked for the presence or absence of a change in the water level 5x of the stored water. Check for poor connection.

Specifically, the bent joint 9 is provided with a hollow tubular portion 9i having a side facing the internal space 9a in the drainage inflow portion 9c on the inside so as to project into the internal space 9a, and the hollow tubular portion 9i is provided. , It is a part of the drainage inflow portion forming portion 9h that forms the drainage inflow portion 9c.

Further, the opening 9b of the bent joint 9 is provided on the upper side of the internal space 9a, and the drainage inflow portion 9c is provided on the lower side of the internal space 9a and at a position facing the opening 9b. The hollow tubular portion 9i projects upward from the bottom plate 9j forming the bottom surface of the internal space 9a.

Specifically, the drainage channel 5 is provided so as to connect the drain discharge port 1a of the air conditioner 1 and the drainage main pipe 4 installed with a downward gradient (drainage gradient), and a top portion thereof is provided in the middle thereof. Have. Therefore, the air conditioner 1 is provided with a pump for pumping the drainage, and the drainage is once pushed up to the top portion of the drainage channel 5 by the pump and then descends.

The upstream drainage pipe 6 is composed of a pipe body 6a and a tubular covering material 6b that covers the pipe body 6a. Similarly, the downstream drainage pipe 7 covers the pipe body 7a and the pipe body 7a. It is composed of a tubular covering material 7b. Here, the tube main bodies 6a and 7a are made of, for example, synthetic resin, and the covering materials 6b and 7b are made of a member having heat insulating properties. Then, the upstream drainage pipe 6 and the drain discharge port 1a are connected via the first joint 13. Similarly, the downstream drainage pipe 7 and the drainage main pipe 4 are connected via the second joint 14.

The bent joint 9 is formed so that the angle between the direction of the upstream side connection port 9d and the direction of the downstream side connection port 9f is a right angle or a smaller angle. Therefore, the upstream side connection port 9d and the downstream side connection port 9f are provided so that the upstream side connection port 9d faces vertically downward and the downstream side connection port 9f faces horizontally or downward.

Further, the bent joint 9 is added to the joint body 9x having the internal space 9a, the opening 9b, the drainage inflow portion 9c, the upstream side connection port 9d, the drainage outflow portion 9e, and the downstream side connection port 9f. , A fixed portion 9y that can be fixed to the support 3 is provided.

The joint body 9x is a separate body of a tubular connecting body 9k having a downstream connection port 9f, and the connecting body 9k is connected to the main body 9m excluding the connecting body 9k via a connecting nut 9n. To. Specifically, the main body portion 9m has a main body cylinder portion 9p and an extended cylinder portion 9q extending laterally from the main body cylinder portion 9p, and a male screw portion 9r is formed on the outer peripheral surface of the extended cylinder portion 9q. Is formed. Then, a connecting nut 9n is idlely attached to the connecting body 9k around its outer circumference, and the connecting body 9k is connected to the main body 9m by screwing the male screw portion 9r and the connecting nut 9n. More specifically, a U-shaped retaining ring 9s is attached to the outer peripheral portion of the connecting body 9k. The connecting nut 9n is made of a cap nut for water circulation, and the connecting nut 9n is prevented from coming off from the outer peripheral surface of the connecting body 9k by the retaining ring 9s, and the male screw portion 9r of the extending cylinder portion 9q is prevented from coming off. Tightened to. At this time, the base end portion of the connecting body 9k is inserted into the extended cylinder portion 9q, and the ring-shaped water blocking member 9t fitted to the outer peripheral portion of the inserted base end portion is the extending cylinder portion 9q. Close to the inner peripheral surface. Then, the inside of the extending cylinder portion 9q and the inside of the connecting body 9k become the drainage outflow portion 9e, and the tip portion of the connecting body 9k becomes the downstream side connecting port 9f.

Further, the upstream side connection port 9d is formed in the joint main body 9x (specifically, the main body cylinder portion 9p) so as to project downward from the bottom plate 9j. The upstream connection port 9d is composed of an inner cylinder portion 9u, an intermediate cylinder portion 9v, and an outer cylinder portion 9w arranged concentrically. The inner cylinder portion 9u is a part of the drainage inflow portion forming portion 9h. Therefore, the pipe body 6a of the upstream drainage pipe 6 is inserted between the inner cylinder portion 9u and the intermediate cylinder portion 9v, and the covering material 6b of the upstream drainage pipe 6 is the intermediate cylinder portion 9v and the outer cylinder portion 9w. It is inserted between the two, and is fixed to the upstream connection port 9d by, for example, bonding. Similarly, the downstream connection port 9f is composed of an inner cylinder portion 90a, an intermediate cylinder portion 90b, and an outer cylinder portion 90c arranged concentrically. Therefore, the pipe body 7a of the downstream drainage pipe 7 is inserted between the inner cylinder portion 90a and the intermediate cylinder portion 90b, and the covering material 7b of the downstream drainage pipe 7 is the intermediate cylinder portion 90b and the outer cylinder portion 90c. It is inserted between the two, and is fixed to the downstream connection port 9f by, for example, bonding.

Further, in the hollow tubular portion 9i provided in the joint main body 9x (specifically, the main cylinder portion 9p), a plurality of ribs 90d and 90d are radially provided so as to connect the tip and the central portion thereof, and these ribs are provided. A through hole 90e is formed in the center where 90d and 90d are gathered. Therefore, the drainage enters the internal space 9a through the ribs 90d and 90d. Then, the valve body 12 constituting the valve mechanism 9g is attached to the through hole 90e. The valve mechanism 9g is a check valve that allows flow in the drainage direction and blocks flow in the reverse direction, and the valve body 12 is made of a soft material and can be bent and deformed. The valve body 12 includes a disk-shaped valve body 12a and a mounting protrusion 12b protruding from the central portion of the valve body 12a, and the valve body 12a is mounted on the valve seat 9z at the tip of the hollow tubular portion 9i. The mounting protrusion 12b is inserted into the through hole 90e and locked. Therefore, the valve body 12 (specifically, the valve body 12a) closes the drainage inflow portion 9c by abutting on the valve seat 9z, but in the bent joint 9 of the other drainage channels 5 except the drainage channel 5 of 1. The valve body 12 (specifically, the valve body 12a) is pressed against the valve seat 9z by the pressure of the air in the sealed state.

The fixed portion 9y has a mounting portion 90f to be mounted on the support 3, and is a set that is provided integrally with the mounting body 90g that is separate from the joint body 9x and can be assembled to the mounting body 90g. It is provided with a attachment portion 90h. In the illustrated embodiment, the fixing portion 9y is provided on the side of the bent joint 9 opposite to the downstream connection port 9f. The fixed portion 9y can be fixed to the support 3 arranged in the vicinity of the air conditioner 1, and in the fixed state, the upstream drainage pipe 6 is arranged so as to extend downward from the bent joint 9. To.

Further, in the case of the mounting body 90g, the mounting portion 90f is composed of a receiving portion 90i for receiving the support 3 and a holding portion 90j extending from the front surface of the receiving portion 90i and curved so as to hold the support 3. It is composed. The mounting body 90g has, in addition to the mounting portion 90f, an assembled portion 90k protruding from the rear surface of the receiving portion 90i. On the other hand, the assembly portion 90h has a leg portion 90m protruding laterally from the joint main body 9x (specifically, the main body tubular portion 9p) and an arm portion 90n extending vertically from the tip of the leg portion 90m. A mounting hole 90p is formed in the arm portion 90n. Therefore, the assembled portion 90k is inserted into the mounting hole 90p and locked, so that the assembled portion 90h is assembled to the mounting body 90g.

The lid 10 is attached so as to fit into the opening 9b provided in the joint main body 9x (specifically, the main body tubular portion 9p), and faces the valve body 12 (valve mechanism 9g). The lid 10 is formed in a bottomed cylindrical shape, and a flat plate-shaped knob portion 10a is provided inside the lid body 10. A ring-shaped water blocking member 10b is fitted to the outer peripheral portion of the lid body 10, and the water stopping member 10b is in close contact with the inner peripheral surface of the opening 9b.

Next, the operation and effect of the drain pipe connection failure confirmation method in the first embodiment will be described. As shown in FIG. 9, when water is poured into the internal space 9a from the opening 9b in the bent joint 9 of the drainage channel 5 of one of the plurality of drainage channels 5 and 5 of the drain pipe, the water is discharged by the valve mechanism 9g. It is prevented from flowing back to the upstream drainage pipe 6 of the drainage channel 5 of 1, and proceeds to the drainage main pipe 4 through the downstream drainage pipe 7 of the drainage channel 5 of 1. Then, when the water reaches the closed portion of the drainage main pipe 4 (specifically, the closed portion by the water stop plug 4a), the water rises the drainage main pipe 4 and further rises the downstream drainage pipe 7 of the drainage channel 5 of 1. Water is stored in the internal space 9a of the bent joint 9 in the drainage channel 5 of the first. Then, on the downstream side of the other drainage channel 5, the air is sealed by the valve mechanism 9 g and the lid 10 in the bent joint 9 of the other drainage channel 5 and the rising water, and the water balances the pressure with the air. The rise stops when the water is removed. Therefore, if there is no drop in the water level 5x in the bent joint 9 of the drainage channel 5 after a certain period of time, there may be a connection failure, a lid 10 or the like in a range filled with water or a range in which air is sealed. It is judged that there is no poor airtightness of the valve mechanism 9g. Note that FIG. 10 shows a state in which water is leaking due to a poor connection of the second joint 14. In FIG. 11, in the bent joint 9 of the drainage channel 5 located in the middle, air has escaped due to a poor connection and a poor airtightness of the lid 10, and the bent joint 9 of the drainage channel 5 located on the most downstream side is shown. Indicates a state in which air is released due to poor airtightness of the valve mechanism 9 g.

That is, according to this drain pipe connection failure confirmation method, each drainage channel 5 is provided with a bent joint 9 having a valve mechanism 9 g and a lid 10, and water for confirming the connection failure is supplied to one drainage channel. By inserting from the opening 9b of the bent joint 9 of 5, it is possible to confirm at once whether or not there is a connection failure of the drain pipes in the plurality of air conditioning devices 1 and 1. Here, the water level 5x of the added water can be confirmed from the opening 9b by appropriately locating the water level 5x in the internal space 9a, but by making the joint 9 transparent or translucent, the water level 5x can be confirmed. The water level 5x can also be confirmed from the side.

12 to 13 show a second embodiment of the present invention. This embodiment is different from the first embodiment in that a valve joint 15 is used instead of the bent joint 9 and a water storage unit 16 is newly provided, but the other embodiments are the same. The same reference numerals are given to similar parts, and different parts will be mainly described.

In the middle of each drainage channel 5 of the drain pipe, a valve joint 15 to which an upstream drainage pipe 6 and a downstream drainage pipe 7 forming the drainage channel 5 are connected and become a part of the drainage channel 5 is provided. Then, apart from the drainage channel 5, a water storage unit 16 connected to the drainage main pipe 4 is provided. In the illustrated embodiment, the water storage unit 16 is provided upstream of the drainage channel 5 located on the most upstream side.

The valve joint 15 has an internal joint flow path 15a, an upstream connection port 15b to which the upstream drainage pipe 6 is connected, a downstream connection port 15c to which the downstream drainage pipe 7 is connected, and a joint flow path 15a. It is provided with a valve mechanism 15d that is normally closed and opens the joint flow path 15a when there is an inflow of drainage from the upstream drainage pipe 6 (see FIG. 12). The water storage unit 16 extends upward from the connection point to the drainage main pipe 4, and has an opening 16a at the upper end portion thereof so that the inside of the water storage unit 16 faces the outside.

Here, as shown in FIG. 13, the drainage main pipe 4 is blocked downstream from the drainage channel 5 connected to the most downstream side of the drainage main pipe 4 and downstream from the water storage unit 16, for example, by a water stop valve 4a. It is assumed that it has been drained. Therefore, in the water storage unit 16, water is poured from the opening 16a until the water is stored inside the water storage unit 16, and then, by checking whether or not the water level 16x of the stored water has changed, the connection of the drain pipe is defective. Check for presence.

Specifically, the valve joint 15 is formed in a straight shape, and the upstream side connection port 15b and the downstream side connection port 15c are in a straight line and face in a direction away from each other. The valve mechanism 15d in the valve joint 15 is the same as the valve mechanism 9g in the bending joint 9 of the first embodiment, and the valve mechanism 15d allows the flow in the drainage direction and blocks the flow in the reverse direction. It is a stop valve (in FIG. 12, the valve mechanism 15d is simplified and described). Further, the water storage unit 16 includes a water storage unit main body 16b having the opening 16a and a tubular extension portion 16c extending downward from the water storage unit main body 16b, and the lower end of the extension portion 16c is a drainage main pipe 4. Is connected via a third joint 17.

Next, the operation and effect of the drain pipe connection failure confirmation method in the second embodiment will be described. When water is poured into the water storage unit 16 from the opening 16a in the water storage unit 16, the water passes through the water storage unit 16 and proceeds to the drainage main pipe 4. Then, when the water reaches the closed portion of the drainage main pipe 4 (specifically, the closed portion by the water stop plug 4a), the drainage main pipe 4 rises, and further the water storage portion 16 rises and water is stored in the closed portion. Then, on the downstream side of the drainage channel 5, the air is sealed by the valve mechanism 15d in the valve joint 15 of the drainage channel 5 and the rising water, and the water rises when the pressure with the air is balanced. Stops. Therefore, if the water level 16x does not drop in the water storage unit 16 after a certain period of time, there is no connection failure or airtightness of the valve mechanism 15d in the water-filled range or the air-sealed range. Judged.

That is, according to this drain pipe connection failure confirmation method, each drainage channel 5 is provided with a valve joint 15 provided with a valve mechanism 15d, and further, a water storage unit 16 connected to the drainage main pipe 4 is provided to confirm the connection failure. By injecting water for this purpose through the opening 16a of the water storage unit 16, it is possible to check at once whether or not there is a connection failure of the drain pipes in the plurality of air conditioning devices 1 and 1. Here, the water level 16x of the put water is appropriately located at a height position in the water storage unit 16 (in the illustrated embodiment, the water storage unit main body 16b), so that the water level 16x can be confirmed from the opening 16a. However, by making the water storage unit 16 (in the illustrated embodiment, the water storage unit main body 16b) transparent or translucent, the water level 16x can be confirmed from the side.

FIG. 14 shows a third embodiment of the present invention. This embodiment is the same as that of the first embodiment, although some of the plurality of bending joints 9 and 9 are replaced with the valve joint 15 shown in the second embodiment. In the following, the same parts will be designated by the same reference numerals, and the different parts will be mainly described.

An upstream drainage pipe that forms the drainage channel 5 at the top of at least one drainage channel 5 (drainage channel located in the middle in the illustrated embodiment) among the plurality of drainage channels 5 and 5 of the drain pipe. A bent joint 9 is provided in which the first upstream drainage pipe 601 as 6 and the first downstream drainage pipe 701 as the downstream drainage pipe 7 are connected to form a part of the drainage channel 5. The plurality of drainage channels 5 and 5 have drainage channels 5 (in the illustrated embodiment, drainage channels 5 located on the most upstream side and the downstream side) in which the bending joint 9 is not provided. In the middle of 5, a second upstream drainage pipe 602 as an upstream drainage pipe 6 forming the drainage channel 5 and a second downstream drainage pipe 702 as a downstream drainage pipe 7 are connected to the drainage channel 5. A valve joint 15 as a part is provided.

The bent joint 9 is connected to an internal space 9a having a bent flow path, an opening 9b that faces the internal space 9a to the outside, a drainage inflow portion 9c that communicates with the internal space 9a, and a first upstream drainage pipe 601. The upstream connection port 9d on the drainage inflow section 9c side, the drainage outflow section 9e communicating with the internal space 9a, and the downstream connection port 9f on the drainage outflow section 9e side to which the first downstream drainage pipe 701 is connected. The valve mechanism 9g that normally closes the drainage inflow section 9c and opens the drainage inflow section 9c when there is an inflow of drainage from the first upstream drainage pipe 601 and the opening 9b so as to close the opening 9b. It includes a lid 10 that can be detachably attached. In the illustrated embodiment, the upstream side connection port 9d has at least a part of the drainage inflow part 9c inside, and the downstream side connection port 9f has at least a part of the drainage outflow part 9e inside. The first upstream drainage pipe 601 is connected to the upstream connection port 9d on the drainage inflow portion 9c side, which has at least a part of the drainage inflow portion 9c inside, and the first downstream drainage pipe 701 is , It is connected to the downstream connection port 9f on the drainage outflow portion 9e side, which has at least a part of the drainage outflow portion 9e inside.

The valve joint 15 has an internal joint flow path 15a, an upstream connection port 15b to which the second upstream drainage pipe 602 is connected, and a downstream connection port 15c to which the second downstream drainage pipe 702 is connected. It is provided with a valve mechanism 15d that normally closes the joint flow path 15a and opens the joint flow path 15a when there is an inflow of drainage from the second upstream drainage pipe 602.

Here, as shown in FIG. 14, it is assumed that the drainage main pipe 4 is blocked by, for example, a water stop valve 4a, downstream of the drainage channel 5 connected to the most downstream side of the drainage main pipe 4. Although it is different from the illustrated embodiment, when there are a plurality of drainage channels 5 provided with the bending joint 9 including the drainage channel 5 of the above 1, one of the drainage channels 5 and 5 is drainage channel 5. The bent joint 9 of the other drainage channels 5 except for 5 is in a state where the lid 10 is attached to the opening 9b. Therefore, in the bent joint 9 of the drainage channel 5 of 1, water is poured from the opening 9b until the water is stored in the internal space 9a, and then, by checking whether or not the water level 5x of the stored water has changed, the drain pipe is connected. Check for poor connection.

Next, the operation and effect of the drain pipe connection failure confirmation method in the third embodiment will be described. When water is poured into the internal space 9a from the opening 9b in the bent joint 9 of the drainage channel 5 of one of the plurality of drainage channels 5 and 5 of the drain pipe, the water is upstream of the drainage channel 5 of 1 by the valve mechanism 9g. Backflow to the side drainage pipe 6 (specifically, the first upstream side drainage pipe 601) is prevented, and the downstream side drainage pipe 7 (specifically, the first downstream side drainage pipe 701) of the drainage channel 5 of 1 is prevented. Proceed to the main drainage pipe 4. Then, when the water reaches the closed portion of the drainage main pipe 4 (specifically, the closed portion by the water stop plug 4a), the water rises in the drainage main pipe 4, and further, the downstream drainage pipe 7 of the drainage channel 5 of 1 (specifically, in detail, The water is stored in the internal space 9a of the bent joint 9 in the drainage channel 5 of the first downstream drainage pipe 701). Then, on the downstream side of the other drainage channel 5, the valve mechanism 15d in the valve joint 15 of the other drainage channel 5 (when there are a plurality of drainage channels 5 provided with the bent joint 9, the other drainage channel 5 of the other drainage channel 5 The air is sealed by the valve mechanism 9g in the bending joint 9, the lid 10 and the valve mechanism 15d in the valve joint 15 and the rising water, and the water stops rising when the pressure with the air is balanced. .. Therefore, if there is no drop in the water level 5x in the bent joint 9 of the drainage channel 5 after a certain period of time, a connection failure or a valve mechanism 15d (a range filled with water or a range in which air is sealed, etc.) When there are a plurality of drainage channels 5 provided with the bent joint 9, there is no airtightness of the valve mechanism 9 g in the bent joint 9 and the valve mechanism 15d) in the lid 10 and the valve joint 15 of the other drainage channels 5. Is judged.

That is, according to this drain pipe connection failure confirmation method, each drainage channel 5 is provided with a bent joint 9 having a valve mechanism 9g and a lid 10 or a valve joint 15 having a valve mechanism 15d, and the connection is poor. By pouring water for confirmation through the opening 9b of the bent joint 9, it is possible to confirm at once whether or not there is a connection failure of the drain pipes in the plurality of air conditioning devices 1 and 1. Here, the water level 5x of the added water can be confirmed from the opening 9b by appropriately locating the water level 5x in the internal space 9a, but by making the joint 9 transparent or translucent, the water level 5x can be confirmed. The water level 5x can also be confirmed from the side.

The present invention is not limited to the above-described embodiment, and various other modifications can be made. For example, in the first embodiment, the drainage channel 5 of 1 is used as the drainage channel located on the most upstream side, but as shown in FIG. 15, the drainage channel 5 of 1 is used as the drainage channel located in the middle. Alternatively, as shown in FIG. 16, the drainage channel 5 of 1 may be the drainage channel located on the most downstream side.

Further, in the second embodiment, the water storage unit 16 is provided upstream of the drainage channel 5 located on the most upstream side, but as shown in FIG. 17, the water storage unit 16 is provided in the drainage channel located in the middle. 5 may be provided between the drainage channel 5 located on the most downstream side, and although not shown, the water storage unit 16 may be provided downstream of the drainage channel 5 located on the most downstream side. , The position is arbitrary.

Further, in the third embodiment, the drainage channel 5 of 1 provided with the bending joint 9 is a drainage channel located in the middle, but may be a drainage channel located on the most upstream side, and may be the most downstream. It may be a drainage channel located on the side. Further, the number of drainage channels 5 provided with the bent joints 9 may be not one, but may be plural, and one of the plurality of drainage channels 5, 5 may be one drainage channel 5. .. Further, in the third embodiment, the number of drainage channels 5 provided with the valve joint 15 may be one, not a plurality.

In the bent joint 9 of the drainage channel 5 of the first and third embodiments, when water is introduced from the opening 9b, the valve mechanism 9 g of the bent joint 9 is covered with a covering member 18 and then water is introduced. (See FIG. 18). As a result, in the bent joint 9 of the drainage channel 5 of 1, when water is poured into the internal space 9a from the opening 9b, the water flows back to the upstream drainage pipe 6 of the drainage channel 5 of the valve mechanism 9g. It is surely prevented by the covering member 18 that covers the water. In the illustrated embodiment, the covering member 18 includes a disk-shaped covering member main body 18a and a cylindrical fitting portion 18b protruding from the entire peripheral edge of the covering member main body 18a so as to stand upright. Therefore, the covering member 18 is attached to the hollow cylinder portion 9i (specifically, the tip portion of the hollow cylinder portion 9i) by fitting the fitting portion 18b to the outside of the hollow cylinder portion 9i in the bent joint 9.

Further, in the second and third embodiments, the valve joint 15 is provided with an opening for the joint flow path 15a to face the outside and a lid body detachably attached to the opening so as to close the opening. May be good. By providing the valve joint 15 with an opening, the valve body constituting the valve mechanism 15d can be attached and detached through the opening while the valve joint 15 is provided in the drainage channel 5.

1 Air conditioning equipment 1a Drainage outlet 4 Drainage main pipe 5 Drainage channel 5x Water level 6 Upstream drainage pipe 601 1st upstream drainage pipe 602 2nd upstream drainage pipe 7 Downstream side drainage pipe 701 1st downstream drainage pipe 702 2nd downstream Side drainage pipe 9 Bent joint 9a Internal space 9b Opening 9c Drainage inflow part 9d Upstream side connection port 9e Drainage outflow part 9f Downstream side connection port 9g Valve mechanism 10 Lid 15 Valve joint 15a Joint flow path 15b Upstream side connection port 15c Downstream side Connection port 15d Valve mechanism 16 Water storage unit 16a Opening 16x Water level 18 Covering member

Claims (4)

This is a method for confirming poor connection in a drain pipe in which the plurality of air conditioners are connected to a drain main pipe via a drainage channel that detours upward from each drain outlet of the plurality of air conditioners and then heads downward.
An upstream drainage pipe and a downstream drainage pipe forming the drainage channel are connected to the top portion of each drainage channel, and a bent joint that becomes a part of the drainage channel is provided.
The bent joint has an internal space having a bent flow path, an opening that faces the internal space to the outside, a drainage inflow portion that communicates with the internal space, and a drainage inflow portion to which the upstream drainage pipe is connected. The upstream side connection port on the side, the drainage outflow part communicating with the internal space, the downstream side connection port on the drainage outflow part side to which the downstream side drainage pipe is connected, and the drainage inflow part are always closed. It is provided with a valve mechanism that opens the drainage inflow portion when there is an inflow of drainage from the upstream drainage pipe, and a lid that is detachably attached to the opening so as to close the opening.
It is assumed that the drainage main pipe is blocked downstream of the drainage channel connected to the most downstream side of the drainage main pipe.
Of the plurality of drainage channels, the bent joints of the other drainage channels other than one drainage channel have the lid attached to the opening thereof.
In the bent joint of the drainage channel of 1, water is poured from the opening until water is stored in the internal space, and then, by checking whether or not there is a change in the water level of the stored water, the connection of the drain pipe is defective. How to check the connection failure of the drain pipe to check the presence or absence of. This is a method for confirming poor connection in a drain pipe in which the plurality of air conditioners are connected to a drain main pipe via a drainage channel that detours upward from each drain outlet of the plurality of air conditioners and then heads downward.
In the middle of each drainage channel, a valve joint to which an upstream drainage pipe and a downstream drainage pipe forming the drainage channel are connected and become a part of the drainage channel is provided, and
Separately from the drainage channel, a water storage unit connected to the drainage main pipe is provided.
The valve joint constantly closes the internal joint flow path, the upstream connection port to which the upstream drainage pipe is connected, the downstream connection port to which the downstream drainage pipe is connected, and the joint flow path. However, it is provided with a valve mechanism that opens the joint flow path when there is inflow of drainage from the upstream drainage pipe.
The water storage section extends upward from the connection point to the drainage main pipe, and has an opening at the upper end portion thereof so that the inside of the water storage section faces the outside.
Assuming that the drainage main pipe is blocked downstream from the drainage channel connected to the most downstream side of the drainage main pipe and downstream from the water storage portion.
In the water storage section, water is poured from the opening until water is stored inside the water storage section, and then, by checking whether or not the water level of the stored water has changed, the presence or absence of a connection failure of the drain pipe is confirmed. How to check the drain pipe connection failure. This is a method for confirming poor connection in a drain pipe in which the plurality of air conditioners are connected to a drain main pipe via a drainage channel that detours upward from each drain outlet of the plurality of air conditioners and then heads downward.
A bend in which a first upstream drainage pipe and a first downstream drainage pipe forming the drainage channel are connected to the top portion of at least one drainage channel among the plurality of drainage channels and become a part of the drainage channel. A joint is provided and
The plurality of drainage channels have drainage channels to which the bending joint is not provided, and a second upstream drainage pipe and a second downstream drainage pipe forming the drainage channel are connected in the middle of the drainage channel. A valve joint that becomes part of the drainage channel is provided,
The bent joint has an internal space having a bent flow path, an opening that faces the internal space to the outside, a drainage inflow portion that communicates with the internal space, and the drainage pipe to which the first upstream drainage pipe is connected. The upstream connection port on the inflow section side, the drainage outflow section communicating with the internal space, the downstream connection port on the drainage outflow section side to which the first downstream drainage pipe is connected, and the drainage inflow section. A valve mechanism that is normally closed and opens the drainage inflow portion when there is an inflow of drainage from the first upstream drainage pipe, and a lid that is detachably attached to the opening so as to close the opening. Prepare,
The valve joint includes an internal joint flow path, an upstream connection port to which the second upstream drainage pipe is connected, a downstream connection port to which the second downstream drainage pipe is connected, and the joint flow path. Is always closed, and a valve mechanism is provided to open the joint flow path when there is inflow of drainage from the second upstream drainage pipe.
It is assumed that the drainage main pipe is blocked downstream of the drainage channel connected to the most downstream side of the drainage main pipe.
When there are a plurality of drainage channels provided with the bent joints, among those drainage channels, the bent joints of the other drainage channels other than one drainage channel have the lid attached to the opening thereof.
In the bent joint of the drainage channel of 1, water is poured from the opening until water is stored in the internal space, and then, by checking whether or not there is a change in the water level of the stored water, the connection of the drain pipe is defective. How to check the connection failure of the drain pipe to check the presence or absence of. The connection of the drain pipe according to claim 1 or 3, wherein in the bent joint of the drainage channel of 1, when water is introduced from the opening, the valve mechanism of the bent joint is covered with a covering member and then water is introduced. Defect confirmation method.

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