JP2020073827A - Connection structure of drain pipe for air conditioning equipment, and piping structure - Google Patents

Abstract

To reduce labor and time by providing a removable structure of a connection joint to facilitate a connection work.SOLUTION: A structure for connecting a drain pipe 31 provided in an air conditioner 3 and a flexible hose 4 for outwardly discharging drainage generating from a the drain pipe 31, includes a first connection joint 10 connected to a side of the air conditioner 3 and a second connection joint 20 connected to a side of the flexible hose 4. The first connection joint 10 and the second connection joint 20 are configured to be detachable.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain pipe connection structure for an air conditioning facility and a piping structure.

  Conventionally, in an air conditioner installed on the ceiling or the like of a room, the generated drain is guided to the outside through a flexible hose. As a connection structure between the drain pipe and the flexible hose in such an air conditioner, for example, as shown in Patent Document 1, an elbow pipe is provided on the drain pipe side of the flexible hose, and the drain hose is interposed between the elbow pipe and the drain pipe. It is common that the flexible hose is temporarily connected to the elbow pipe and then connected to the elbow pipe, and then drained to the outside through a drain pipe or the like.

  Patent Document 1 discloses a first connection part for connecting to a drain pipe of an air conditioning indoor unit, and a second connection for connecting to a drain laterally running pipe for guiding the drain discharged from the drain pipe to the outside of the room. And a hose portion which is continuous with the first connecting portion and the second connecting portion and has heat insulation and elasticity.

Utility model registration No. 3144918

However, the conventional connection structure between the drain pipe and the flexible hose has the following problems.
That is, in the conventional connection structure shown in Patent Document 1 and the like, as a connection portion other than the drain pipe, it is configured by many pipe parts such as a drain hose, a flexible hose (hose portion), and each connection joint, and these are mutually connected. It is connected by adhesion or tightening using a band or the like. For example, when connecting the drain pipe and drain hose, or connecting the drain hose and the connection joint (or flexible hose), with the end of the drain pipe and the connection joint inserted in the drain hose, connect the connection part with a metal band, etc. The fastener is configured to be tightened from the outside by a small screw portion provided on the fastener.

  When tightening with a tightening tool such as a metal band, it is necessary to tighten a small screw portion with a tool such as a screwdriver, which is a labor-intensive and time-consuming operation. In addition, since it is not possible to easily disconnect not only the connection point by adhesion but also the connection point once using the fastener, it took time to maintain the pipe and replace the pipe material. In the case of an air conditioner installed behind the ceiling, work is performed at a high place, and thus work using a tool such as a driver is particularly low in work efficiency. Therefore, there is a demand for a drain pipe connection structure that can be easily attached and detached, and there is room for improvement in this respect.

  The present invention has been made in view of the above-mentioned problems, and by providing a connection joint having a detachable structure, the connection work is facilitated, and the drain pipe connection structure for an air conditioning facility that can reduce labor and time. , And a piping structure.

  In order to achieve the above object, the connection structure of the air conditioner drain pipe according to the present invention is a connection structure of the air conditioner drain pipe for connecting the air conditioner installed in the ceiling and the flexible hose, A first connection joint connected to the air conditioner side and a second connection joint integrally connected to the flexible hose side via an elbow are provided, and the first connection joint and the second connection joint are removable. And the first connection joint is directly connected to a drain pipe of the air conditioner or a drain hose connected to the air conditioner with an adhesive, and the first connection joint is transparent, and the first connection joint is And a locking portion is provided on one of the second connection joints, and a locked portion is provided on the other, and the locked portion includes two locking projections provided at symmetrical positions, The locking part has two extension parts provided at symmetrical positions. Includes a section, when the first connection joint and said second connection joint is connected, the extending portion between said retaining projection is being located.

  In the connection structure of the air conditioner drain pipe according to the present invention, there is provided an air conditioner drain pipe connection structure for connecting a drain pipe for discharging drain generated from the air conditioner and a flexible hose. Side connecting side and a second connecting side connecting to the flexible hose side, the first connecting side and the second connecting side are detachably provided, and the first connecting side is connected. Is directly connected to the drain pipe with an adhesive, the first connection joint is transparent, and a locking portion is provided on one of the first connection joint and the second connection joint, and the other is locked. A portion is provided, the locked portion has two locking projections provided at symmetrical positions, and the locking portion has two extending portions provided at symmetrical positions, The connection joint and the second connection joint are connected Come, the extending portion between said retaining projection is being located.

  Further, in the connection structure of the air conditioner drain pipe according to the present invention, there is provided a connection structure of an air conditioner drain pipe for connecting an air conditioner to a flexible hose and a drain pipe flexible hose, which includes the air conditioner side and the drain pipe. And a second connection joint connected to both ends of the flexible hose side, wherein the first connection joint is connected to the drain pipe of the air conditioner and the drain pipe by an adhesive agent. Directly connected, the first connection joint and the second connection joint are detachably provided, one of the first connection joint and the second connection joint is provided with a locking portion, and the other is engaged. A stop portion is provided, the locked portion includes two locking protrusions provided at symmetrical positions, and the locking portion includes two extending portions provided at symmetrical positions, 1 connection joint and the second connection joint contact When the extending portion is located, the second connecting joint of the air conditioner side between the retaining projection is characterized in that it is connected to the flexible hose via the elbow.

  Further, a piping structure according to the present invention is a piping structure including an air conditioner installed on the ceiling, a flexible hose, and a drain pipe, wherein the air conditioner and the flexible hose are defined in claim 1. It may be characterized in that they are connected by a connection structure.

In the present invention, first, the first connection joint is connected to the drain pipe of the air conditioner (or the end of the flexible hose opposite to the air conditioner side), and the second connection is connected to one end of the flexible hose (or the drain pipe). By connecting the joint, the first connecting joint and the second connecting joint can be connected after that, so that the connecting work between the drain pipe and the flexible hose or the connecting work between the flexible hose and the drain pipe can be performed with a tool. It can be easily done without using it and without any time or effort. Since the connection work is facilitated in this manner, the work can be efficiently performed even when the air conditioner is installed at a high place and the work is difficult.
Moreover, since the first connecting joint and the second connecting joint can be attached and detached, both connecting joints can be easily detached without performing a troublesome work even after the connection. Therefore, there is an advantage that the work can be efficiently performed even when the flexible hose is maintained or replaced.

  According to the connection structure and the piping structure of the air conditioner drain pipe of the present invention, by providing the connection joint having the detachable structure, the connection work is facilitated, and the labor and time can be reduced.

It is a side view which shows the connection structure of the drain pipe and the flexible hose by embodiment of this invention. It is a perspective view which shows the structure of a drain pipe joint among the connection structures shown in FIG. 1, Comprising: It is a figure which shows the state before connection of a 1st connection joint and a 2nd connection joint. It is a perspective view showing composition of a drain pipe joint, and is a figure showing the state where the 1st connecting joint and the 2nd connecting joint were connected. It is a half cross-sectional view showing a configuration of a drain pipe joint. It is a side view of a 1st connection joint. It is a side view of a 2nd connection joint. It is the perspective view which looked at the cap nut of the 2nd connection joint from the extension part side. It is a figure which shows a part of connection structure by other embodiment. It is a side view which shows the connection structure of the drain piping and the flexible hose by other embodiment.

  Hereinafter, a connection structure and a piping structure of a drain pipe for an air conditioner according to an embodiment of the present invention will be described in detail with reference to the drawings.

  The connection structure of the drain pipe for air conditioning equipment of the present embodiment shown in FIG. 1 discharges the drain pipe 31 provided in the air conditioner 3 provided in the ceiling, for example, and the drain generated from the drain pipe 31 to the outside. A drain pipe joint 1 for connecting with a flexible hose 4 is provided. Here, the flexible hose 4 can be constituted by, for example, a soft or relatively hard vinyl chloride hose whose outer periphery is covered with a heat insulating material such as urethane foam, which has a two-layer structure.

In the present embodiment, a drain hose 5 made of a cross-linked polyethylene pipe is provided between the drain pipe 31 and the drain pipe joint 1, and an elbow 6 is provided between the drain pipe joint 1 and the flexible hose 4. That is, as the connection structure of the present embodiment, the drain pipe 31, the drain hose 5, the drain pipe joint 1, the elbow 6, and the flexible hose 4 are connected in this order from the air conditioner 3 side, and the drain pipe is connected to the end of the flexible hose 4. 7 is connected, and drain is discharged through these pipe materials. The flexible hose 4 is arranged so as to once rise from the elbow 6.
In addition, the drain hose 5, the drain pipe joint 1, and the elbow 6 are preferably covered with a heat insulating material (not shown) or configured to have a heat insulating function because dew condensation can be prevented.

  Here, in FIG. 1, the air conditioner 3, a part of the drain pipe joint 1 (a first connection joint 10 described later), and a rising portion of the flexible hose 4 (a support portion of reference numeral 61) are respectively suspended by the hanging members 8 from the building ceiling. It is suspended from the plane T. The hanging positions and the number of hanging points are not limited to these, and can be set arbitrarily.

  As shown in FIGS. 1 to 3, the drain pipe joint 1 includes a first connection joint 10 connected to the air conditioner 3 side and a second connection joint 20 connected to the flexible hose 4 side. The joint 10 and the second connection joint 20 are detachably provided.

  As shown in FIGS. 2, 4 and 5, the first connection joint 10 is formed by injection molding a vinyl chloride resin, and has an end connected to the drain hose 5 on the drain pipe 31 side at one end. A portion 11 is provided, and a male screw cylinder portion 12 (locked portion) and a flange 13 (locked portion) are provided at the other end.

The male screw cylinder portion 12 has a two-thread screw structure including two spiral ridges 12a each having a start end displaced by 180 degrees and each having a pitch of about 1 pitch, and has a cap nut 21 (locking) of a second connection joint 20 described later. The female screw portion 21a (see FIG. 7) is screwed.
The flange 13 includes an elliptical flange main body 13a and two locking protrusions 13b provided at symmetrical positions.

  The locking projections 13b each have a locking surface at a position deviated from the major axis of the ellipse of the flange main body 13a by approximately 45 degrees, and from the tip of this locking surface to the tightening direction of the screw of the male screw cylinder part 12 The taper surface is provided on the opposite side so as to gradually approach the flange main body 13a and be flush with the flange main body 13a at the end. That is, the locking protrusion 13b projects in the outer peripheral direction of the flange main body 13a, and the height from the flange main body 13a gradually increases in the screw tightening direction.

  On the other hand, the second connection joint 20, as shown in FIGS. 3, 4, 6, and 7, a cap nut 21, a joint body 22 (joint pipe) into which the cap nut 21 is rotatably fitted, Is equipped with.

The joint body 22 has a spigot 22a at one end and a connecting portion 22b at the other end.
The spigot portion 22a is adapted to be inserted into the male screw cylinder portion 12, an O-ring 22c is fitted around the male screw cylinder portion 12, and is liquid-tightly attached to the inner surface of the male screw cylinder portion 12. The connecting portion 22b is integrally connected to the elbow 6.

The cap nut 21 includes a cap nut body portion 23 and two detent portions 24.
The cap nut main body 23 has a double thread formed on the inner peripheral surface so as to be screwed into the male screw cylindrical portion 12, and the opening end thereof cannot be detached from the joint main body 22 so as to face the tip of the opening 22a. It is mounted rotatably.

  The two whirl-stops 24 are provided point-symmetrically about the central axis of the cap nut body 23 as a center of symmetry, and include a movable portion 24a and an extending portion 24b.

The movable portion 24a has an arc shape with an inner diameter slightly larger than the outer peripheral surface of the cap nut body portion 23, and one end thereof is concentric with the wall surface of the cap nut body portion 23 on the wall surface of the cap nut body portion 23. It is fixed to be. In addition, in the unloaded state, the movable portion 24a forms a gap having a substantially uniform width with the outer wall surface of the cap nut body portion 23, and exerts a force with a finger or the like in the radial direction of the cap nut body portion 23. When received, it is elastically deformed in the direction in which a force is applied centering on the fixed part.
The extending portion 24b is provided so as to extend from the open end of the movable portion 24a in parallel with the central axis of the cap nut body portion 23 and outward from the edge of the cap nut body portion 23.

Next, the operation of the connection method of the drain pipe joint 1 having the above-described configuration and the operation of the connection structure of the drain pipe for air conditioning equipment using the drain pipe joint 1 will be described with reference to the drawings.
As shown in FIGS. 2 and 3, in the drain pipe joint 1 according to the present embodiment, when the first connection joint 10 and the second connection joint 20 are connected, the opening 22a of the second connection joint 20 is screwed with a male screw. After inserting into the cylindrical portion 12, the cap nut 21 is manually rotated to screw the cap nut main body portion 23 into the male screw cylindrical portion 12. Along with this screwing, the spigot portion 22a enters toward the inside of the male screw cylinder portion 12. Further, when the cap nut main body 23 is screwed in until it is rotated by about 90 degrees, the extending portion 24b forms an end edge of the flange main body 13a on the male screw cylinder 12 side near the minor axis of the ellipse of the flange main body 13a. And in the direction of the flange 13 to a position substantially matching the tip edge of the extending portion 24b.
When the cap nut 21 is further screwed in, the extending portion 24b is first received by the taper surface of the locking projection 13b, and as the screwing progresses, the movable portion 24a is elastically deformed to form a flange along the taper surface. It gradually moves outward in the radial direction of 13.

Then, when the cap nut main body 23 is screwed in until it is rotated by approximately 180 degrees, the extending portion 24b gets over the locking projection 13b, and the elastic restoring force of the movable portion 24a causes the detent portion 24 of the cap nut main body 23 to rotate. Restores the original shape along the outer peripheral surface. Therefore, even if the cap nut 21 tries to rotate in the loosening direction of the screw, the extending portion 24b comes into contact with the locking surface of the locking projection 13b to prevent rotation in the loosening direction. At the same time, the end surface of the cap nut body 23 is received by the flange 13 and further screwing cannot be performed.
As described above, the drain pipe joint 1 has a one-touch joint structure including a locking structure that allows the first connection joint 10 and the second connection joint 20 to be attached to and detached from each other.

In the present embodiment, as shown in FIG. 1, for example, the first connection joint 10 is bonded by an adhesive via the drain hose 5 which is connected to the drain pipe 31 of the air conditioner 3 by a metal band or an adhesive in advance. Connect by bonding. At the same time, the second connection joint 20 integrally provided with the elbow 6 is connected to the one end 4a of the flexible hose 4 by adhesion. After that, the first connection joint 10 and the second connection joint 20 can be connected to each other, whereby the connection work between the drain pipe 31 and the flexible hose 4 can be easily performed without taking time and effort. Since the connection work is facilitated as described above, the work can be efficiently performed even when the air conditioner 3 is installed at a high place and the work is difficult.
Moreover, since the first connecting joint 10 and the second connecting joint 20 can be attached and detached by hand fitting and screwing without using a tool such as a screwdriver, it is possible to perform a laborious work even after connecting. Both connection joints 10 and 20 can be easily separated. Therefore, there is an advantage that the work can be efficiently performed even when the flexible hose 4 is maintained or replaced.

  Further, in the case of the present embodiment, since the drain pipe joint 1 has a one-touch joint structure in which the connecting portions of the first connecting joint 10 and the second connecting joint 20 can be attached and detached without using a tool, the connecting work can be shortened. It can be done in time and easily. There is also an advantage that work can be performed in a narrow space.

Further, in the present embodiment, by screwing the female screw portion 21a of the cap nut 21 of the second connection joint 20 from the outside of the male screw cylinder portion 12 of the first connection joint 10, both connection joints 10, 20 are joined together. Can be easily joined.
Moreover, since the cap nut 21 is rotatably provided around the joint body 22, at least one of the first connecting joint 10 and the second connecting joint 20 (here, only the second connecting joint 20 is provided) as in the present embodiment. ), The first connecting joint 10 and the second connecting joint 20 can be connected regardless of the orientation of the elbow 6.

  With the connection structure and the piping structure of the air conditioner drain pipe configured as described above, the work can be facilitated and the labor and time can be reduced by adopting a simple attachment / detachment structure.

  Although the connection structure of the air conditioner drain pipe and the embodiment of the piping structure according to the present invention have been described above, the present invention is not limited to the above embodiment, and may be appropriately changed without departing from the spirit of the present invention. It can be changed.

  For example, in the above-described present embodiment, the elbow 6 is provided between the drain pipe joint 1 and the flexible hose 4, but the present invention is not limited to this. For example, as shown in FIG. 8, the spout 22a of the joint body 22 of the second connection joint 20 is directly connected to the one end 4a of the flexible hose 4, and the elbow 6 is connected to the spout 11 of the first connection joint 10. It can also be configured. In this case, the end portion 6a of the elbow 6 on the side opposite to the drain pipe joint 1 is connected to the drain hose 5.

  Further, in the present embodiment, the male threaded cylinder portion 12 and the flange 13 of the first connection joint 10 are the locked portions, and the cap nut 21 of the second connection joint 20 is the locking portion. However, the structure is not limited to this, and other structures can be adopted. For example, in the present embodiment, although the rotation of the cap nut 21 is locked by the rotation stopper 24, the rotation stopper 24 is omitted and the cap nut 21 is joined only by screwing the female screw portion 21a. It may be configured, or may be another configuration without using the cap nut 21. For example, as another detachable locking structure, a known bayonet mechanism (Japanese Unexamined Patent Publication No. 2010-96241) in which a protrusion and a bayonet groove are fitted through a groove provided in an engagement wall is connected. By simply inserting the tube into the tube insertion part, the expansion ring that expands the tightening ring flies, and the tightening ring elastically contracts and tightens the tube with the nozzle-shaped inner cylinder inserted into the tube. A known one-touch connection structure (Japanese Unexamined Patent Application Publication No. 2001-295974) is used to prevent slipping off and stopping water.

  Further, in the above-described embodiment, the male screw cylinder portion 12 and the flange 13 are provided in the first connection joint 10, and the cap nut 21 is provided in the second connection joint 20, but the configurations may be reversed. That is, the first connection joint 10 connected to the drain pipe 31 side may be configured to have a cap nut, and the second connection joint 20 connected to the flexible hose 4 side may be configured to have a male screw cylinder portion and a flange.

  Further, the drain hose 5 can be omitted and the drain pipe joint 1 can be directly connected to the drain pipe 31, so that the flexible hose 4 can be arranged close to the air conditioner 3, and the connection structure can be made compact. be able to. In this case, the first connection joint 10 and the drain pipe 31 can be connected by adhesive bonding with an adhesive.

  Furthermore, the first connecting joint 10 can be made of a transparent member, which has an advantage that the application state of the adhesive can be confirmed.

Further, the connection location of the drain pipe joint 1 is not limited to being between the drain pipe 31 and the flexible hose 4 as in the present embodiment. In addition to this, as shown in FIG. 9, the drain pipe joint 1 includes a flexible hose 4 for discharging the drain generated from the drain pipe 31 provided in the air conditioner 3 to the outside, and the flexible hose 4 on the air conditioner 3 side. It may be arranged between the drain pipe 7 connected to the opposite end 4b. In this case, the second connection joint 20 connected to the flexible hose 4 side and the first connection joint 10 connected to the drain pipe 7 side are provided, and the first connection joint 10 and the second connection joint 20 are detachable. It has a connection structure provided. In FIG. 9, the elbow 6 is a well-known (Japanese Patent Laid-Open No. 2012-233675) heat insulating joint provided with a heat insulating layer, so that it is possible to save the trouble of coating the outside of the joint with a heat insulating material.
Furthermore, the drain pipe joint 1 may be connected between the flexible hose 4 and the end 4a of the air conditioner 3, and the drain pipe joint 1 may be connected to both ends of the flexible hose 4.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

1 Drain pipe joint 3 Air conditioner 4 Flexible hose 5 Drain hose 6 Elbow 7 Drain pipe 10 First connection joint 12 Male screw cylinder (locked part)
13 Flange (locked part)
20 Second connection joint 21 Cap nut (locking part)
22 Joint body (joint pipe)
23 Cap nut body 24 Rotation stop 31 Drain pipe

Claims (4)

A connection structure of a drain pipe for an air conditioner for connecting an air conditioner installed on the ceiling and a flexible hose,
A first connection joint connected to the air conditioner side, and a second connection joint integrally connected to the flexible hose side via an elbow,
The first connection joint and the second connection joint are detachably provided,
The first connection joint is directly connected by an adhesive to a drain pipe of the air conditioner or a drain hose connected to the air conditioner,
The first connecting joint is transparent,
An engaging portion is provided on one of the first connecting joint and the second connecting joint, and an engaged portion is provided on the other,
The locked portion includes two locking protrusions provided at symmetrical positions,
The locking portion includes two extending portions provided at symmetrical positions,
A connection structure for a drain pipe for an air conditioning facility, wherein the extension portion is located between the locking protrusions when the first connection joint and the second connection joint are connected. A connection structure of a drain pipe for an air conditioner for connecting a drain pipe for discharging drain generated from an air conditioner and a flexible hose,
A first connection joint connected to the drain pipe side and a second connection joint connected to the flexible hose side,
The first connection joint and the second connection joint are detachably provided,
The first connection joint is directly connected to the drain pipe by an adhesive,
The first connecting joint is transparent,
An engaging portion is provided on one of the first connecting joint and the second connecting joint, and an engaged portion is provided on the other,
The locked portion includes two locking protrusions provided at symmetrical positions,
The locking portion includes two extending portions provided at symmetrical positions,
A connection structure for an air conditioner drain pipe, wherein the extension portion is located between the locking projections when the first connection joint and the second connection joint are connected. A connection structure of a drain pipe for air conditioning equipment for connecting an air conditioner to a flexible hose and a drain piping flexible hose,
A first connection joint connected to the air conditioner side and the drain pipe side, and a second connection joint connected to both ends of the flexible hose side,
Equipped with
The first connection joint is directly connected to the drain pipe of the air conditioner and the drain pipe by an adhesive,
The first connection joint and the second connection joint are detachably provided,
An engaging portion is provided on one of the first connecting joint and the second connecting joint, and an engaged portion is provided on the other,
The locked portion includes two locking protrusions provided at symmetrical positions,
The locking portion includes two extending portions provided at symmetrical positions,
When the first connection joint and the second connection joint are connected, the extension portion is located between the locking protrusions,
The connection structure for a drain pipe for an air conditioning facility, wherein the second connection joint on the air conditioner side is connected to the flexible hose via an elbow. A piping structure including an air conditioner installed behind the ceiling, a flexible hose, and a drain pipe,
A piping structure in which the air conditioner and the flexible hose are connected by the connection structure according to claim 1.

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