JP2008121898A - Drain hose joint for air conditioner indoor machine and method of installing drain piping - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the efficiency of piping work by securely preventing leakage of drainage from drain piping of an air conditioner indoor machine placed on a ceiling etc. <P>SOLUTION: The drain hose joint for air conditioner indoor machine has a first connecting part 3 for connection to a drain pipe 1a of an air conditioner indoor machine 1 at one end and a second connecting part for connection to the pipe for guiding drain to the outside of a room where the air conditioner indoor machine is installed, and the length thereof can be adjusted according to the distance between the pipe for guiding drain and the pipe. The first and second connecting parts are cylindrical elastic bodies which can be inserted to surround the outer peripheral part of the drain pipe or the like, and a hose part 4 continuing to the first and second connecting parts has heat insulating property and elasticity. A boundary portion between the first and second connecting parts and the hose part is provided with a reinforcement part for reinforcing the mechanical strength of the boundary portion. Preferably the drain hose joint has a tightening part for tightening both connecting parts from the outside, with the first and second connecting parts inserted in the drain pipe of the air conditioner indoor machine. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hose joint used when a drain generated in an air-conditioning indoor unit installed indoors is led to the outside of the room, and a drain pipe installation method using the joint.

  Conventionally, as shown in FIG. 5, in order to guide the drain generated by the air conditioning indoor unit 31 installed on the ceiling or the like of the room to the outside, a pump is attached to the air conditioning indoor unit 31, and the drain pipe 31 a is temporarily connected to the rising pipe 32. After the start-up, the horizontal pipe was connected to a horizontal running pipe (pipe to which drain pipes from a plurality of air-conditioning indoor units were connected) 33 and the like and led outside. At this time, when connecting the drain pipe 31a protruding from the air conditioning indoor unit 31 and the laterally running pipe 33, the standard parts 34 (connection part) and 35 (band) prepared by the air conditioning indoor unit manufacturer side are unique to the contractor. In addition, the connection parts 32, 34, and 35 were covered with a heat insulating material and kept warm in order to prevent water droplets from adhering to and falling from the outer surface of the pipe.

  Specifically, as shown in FIG. 4, as shown in FIG. 4, the drain sideways pipe is laid in step S <b> 1, and then in step S <b> 2, a drainage test is performed on the drain sideway pipe to check for leakage. After confirming that there is no, the drain transverse tube is kept warm in step S3.

  In step S4, an air conditioning indoor unit (corresponding to 31 in FIG. 5) is installed on the ceiling, in step S5, a light iron ceiling foundation is attached to the lower side of the air conditioning indoor unit, and in step S6, the drain piping around the above-described devices. (Reference numbers 32 to 35 in FIG. 5) are connected, and in step S7, a ceiling board is pasted under the light iron ceiling base, and in step S8, a drain pipe water flow test is performed and it is confirmed that there is no leakage. Thereafter, in step S9, the drain pipe 31a around the air-conditioning indoor unit 31 is dew-protected to complete the installation of the drain pipe.

  However, conventionally, the connection portion 34 of the drain pipe is surrounded by a heat insulating material and then tightened with a band 35. However, since the tightening cannot be reliably performed, the drain may leak from the connection portion 34 or the rising pipe 32. There was also a need to redo the piping work after construction. Further, as described above, since this piping work was performed after the light iron ceiling foundation was laid, the work was performed in a narrow ceiling, and the workability was extremely poor, requiring a long time for the work.

  Therefore, the present invention has been made in view of the above-described problems in the prior art, and reliably prevents drain leakage from the drain piping of the air conditioning indoor unit and improves the workability of the piping work. An object of the present invention is to provide a drain hose joint and a drain pipe installation method for an air conditioning indoor unit capable of performing piping work in time.

  In order to achieve the above object, the present invention provides a drain hose joint of an air conditioning indoor unit, wherein one end is connected to a drain pipe of the air conditioning indoor unit, and the other end is connected to the air conditioning room. A second connecting portion for connecting to a pipe for guiding the drain to the outside of the room in which the machine is installed, and a distance between the drain pipe of the air conditioning indoor unit and the pipe for guiding the drain The length can be adjusted according to the above.

  And according to the drain hose coupling concerning this invention, since the length was adjustable according to the distance between the drain pipe of an air-conditioning indoor unit, and piping for leading a drain, the 1st connection part Is connected to the drain pipe of the air conditioning indoor unit, and the second connecting part is connected to a pipe for guiding the drain to the outside of the room where the air conditioning indoor unit is installed. It can be done easily.

  In the drain hose joint of the air conditioning indoor unit, the first connection part is formed of a cylindrical elastic body into which the drain pipe can be inserted so as to surround an outer peripheral part of the drain pipe of the air conditioning indoor unit, A hose continuous with the first and second connection portions, wherein the second connection portion is formed of a cylindrical elastic body into which the piping can be inserted so as to surround an outer peripheral portion of the piping for guiding the drain. And a reinforcing portion that reinforces the mechanical strength of the boundary portion at a boundary portion between the first and second connecting portions and the hose portion, and A tightening portion for tightening the first and second connection portions from the outside in a state where the first and second connection portions are respectively inserted into the drain pipe of the air conditioning indoor unit or a pipe for guiding the drain; It can be configured to be provided.

  According to this drain hose joint, the first connecting portion is inserted into the drain pipe so as to surround the outer peripheral portion of the drain pipe of the air conditioning indoor unit, and the second connecting portion is used for guiding the drain. By inserting into the pipe so as to surround the outer periphery of the pipe, the drain hose joint can be connected to the drain pipe with one touch, and the connection work can be easily performed. Further, since the first and second connection portions are tightened from the outside while being inserted into the drain pipe of the air-conditioning indoor unit by the tightening portion, both the connection portions can be firmly fixed, and drain leakage is ensured. Can be prevented. Furthermore, since the hose portion has heat insulating properties and elasticity, it is not necessary to separately provide a heat insulating material, and it can be easily connected to a drain horizontal running pipe or the like. In addition, by reinforcing the boundary portion between each of the first and second connecting portions and the hose portion with the reinforcing portion, it is possible to withstand the force applied during the connection work, such as vibration during operation of the air conditioning indoor unit, etc. Will not damage.

  In the drain hose joint, the reinforcing portion may be a cylindrical reinforcing member that is integrally formed with the first and second connecting portions and is mounted inside the hose portion. As the material of the cylindrical reinforcing member, stainless steel is suitable, but other metals and hard resins can also be used.

  In addition, a plurality of protrusions can be provided on the outer circumferential surface of the cylindrical reinforcing member over the entire circumference of the outer circumferential surface, and the outer circumferential surface and the inner circumferential surface of the hose portion can be fixed via an adhesive. By providing a plurality of protrusions, more adhesive can be applied between the outer peripheral surface of the cylindrical reinforcing member and the inner peripheral surface of the hose portion, and the cylindrical reinforcing member and the hose portion can be made stronger. Can be connected to.

  Furthermore, one or more protrusions are provided on the inner peripheral surface of the first and second connection portions on the inner peripheral surface that contacts the outer peripheral portion of the drain pipe or the pipe for guiding the drain. Can do. Since one or more ridges are in contact with the outer surface of the drain pipe of the air conditioning indoor unit and are tightened by the tightening portion, the ridge presses against the drain pipe or the outer surface of the pipe for guiding the drain, The first and second connection portions can be firmly fixed by a drain pipe.

  In addition, for mounting the band portion of the tightening portion over the entire circumference on the outer circumferential surface opposed to one or more protrusions formed on the inner circumferential surface of the first and second connection portions over the entire circumference. The groove part can be provided. Accordingly, the position where the protrusion is present can be securely tightened through the band portion, and the first and second connection portions can be more firmly fixed to the drain pipe or the pipe for guiding the drain. .

  Further, the tightening portion may be configured to include a mark for confirming the mounting state of the band portion in the groove portion of the first and second connection portions. Accordingly, forgetting to tighten the tightening portion can be prevented, and the band portion can be tightened to the first and second connecting portions with a predetermined tightening force.

  Furthermore, the first and second connecting portions have an inner diameter corresponding to the diameter of the outer peripheral portion of the drain pipe or the pipe for guiding the drain, and a constant outer diameter regardless of the diameter of the outer peripheral portion. It can comprise so that it may have. Even if the diameter of the outer peripheral part of the drain pipe of the air conditioning indoor unit changes, the outer diameters of the first and second connection parts are kept constant, so that the same tightening part can always be used.

  Further, the present invention is a drain pipe installation method for an air conditioning indoor unit installed in a ceiling portion, wherein the first connection portion of the drain hose joint of the air conditioning indoor unit is connected to a drain pipe of the air conditioning indoor unit, The second connecting portion is connected to a pipe for guiding a drain to the outside of the room where the air conditioning indoor unit is installed, and a ceiling base and a ceiling board of the ceiling portion where the air conditioning indoor unit is installed are laid. And

  And according to the present invention, after the drain piping work is completed, the ceiling work and the ceiling board of the ceiling part where the air conditioning indoor unit is installed are laid, so the piping work in a narrow space can be avoided, And the piping work can be done in a short time.

  As described above, according to the present invention, it is possible to reliably prevent drain leakage from the drain pipe, improve the workability of the piping work, and perform the drain piping work of the air conditioning indoor unit in a short time. Is possible.

  FIG. 1 shows an embodiment of a drain hose joint (hereinafter abbreviated as “joint”) of an air conditioning indoor unit according to the present invention. The joint 2 is a cylindrical shape into which a drain pipe 1a of the air conditioning indoor unit 1 is inserted. The attachment portion (first connection portion) 3, the hose portion 4 that is continuous with the attachment portion 3 and has heat insulation and elasticity, and the mechanical strength of the boundary portion between the attachment portion 3 and the hose portion 4 are reinforced. The reinforcing portion 5 and the tightening portion 6 for tightening the attachment portion 3 from the outside.

  The attachment portion 3 is made of soft vinyl chloride or the like, and is formed in a cylindrical shape so that the drain pipe 1a can be inserted so as to surround the drain pipe 1a of the air conditioning indoor unit 1. As shown in FIG. 2, the mounting portion 3 has two protrusions 3b formed on the inner surface 3a on the large diameter side into which the drain pipe 1a (see FIG. 1) is inserted, and a tightening portion on the outer surface 3c on the large diameter side. A groove 3d wider than the band width W of 6 (see FIG. 3) is formed. In addition, three protrusions 3f are provided on the outer surface 3e on the small diameter side. By providing these protrusions 3f, when the attachment portion 3 and the hose portion 4 are fixed using an adhesive, more adhesive can be applied, and the attachment portion 3 is firmly attached to the hose portion 4. It can be fixed to.

  Although the outer diameter of the drain pipe 1a of the air conditioning indoor unit 1 shown in FIG. 1 varies depending on the model of the air conditioning indoor unit 1, the diameter of the inner surface 3a on the large diameter side of the mounting portion 3 is changed to that of the drain pipe 1a. If several types are prepared according to the outer diameter, it can be easily handled. At this time, the outer surface 3c on the large-diameter side of the mounting portion 3 should always have the same tightening portion 6 by having a constant diameter without changing according to the outer diameter of the drain pipe 1a. Is preferable.

  The hose portion 4 shown in FIG. 1 is formed continuously with the attachment portion 3 and is made of soft vinyl chloride or the like, like the attachment portion 3, and is connected to a horizontal running tube or the like of a drain pipe (not shown).

  The reinforcing portion 5 is made of stainless steel or the like, and is attached to the inside of the hose portion 4 to enhance the mechanical strength of the boundary portion with the mounting portion 3. The reinforcement part 5 is provided in order to prevent damage due to handling when connecting the joint 2 to the drain pipe 1a of the air conditioning indoor unit 1, vibration during operation of the air conditioning indoor unit, and the like. The reinforcing portion 5 can be made of metal other than stainless steel, hard resin, or the like.

  The fastening part 6 prevents the attachment part 3 from coming off the drain pipe 1a by fastening the attachment part 3 from the outside after the attachment part 3 is attached to the drain pipe 1a, and the drain from the attachment part 3 Provided to prevent leakage. As shown in FIG. 3, the tightening portion 6 has a housing 6a made of stainless steel or the like, a band (hob) 6b made of stainless steel or the like inserted through the housing 6a, and a band 6b for fixing the band 6b to the housing 6a. The screw part 6c which consists of iron etc. which performed the chromate process of this, and the mark 6d for confirming the appropriate insertion state of the band 6b.

  In addition, although illustration is abbreviate | omitted, it is comprised similarly to the attachment part 3 side also about the edge part (2nd connection part) on the opposite side to the attachment part 3 side of the hose part 4 in FIG. It can be set as a connection part.

  Next, an example of a method for installing a drain pipe for an air conditioning indoor unit using the joint 2 having the above configuration will be described with reference to FIG. While explaining.

  First, in step S11, a drain horizontal running pipe is laid. Next, in step S12, a water flow test is performed on the drain transverse tube, and after confirming that there is no leakage, the drain transverse tube is kept warm in step S13.

  In step S14, an air-conditioning indoor unit (corresponding to 1 in FIG. 1) is installed on the ceiling, and in step S15, the drain pipe 1a of the air-conditioning indoor unit 1 is connected to the existing drain lateral running pipe via the joint 2. After inserting the attachment part 3 into the drain pipe 1a, the band 6b of the fastening part 6 is positioned at the position of the groove part 3d of the attachment part 3, and the joint 2 and the drain pipe 1a are connected by simply fastening the fastening part 6. The connection between the joint 2 and the drain transverse pipe can be similarly performed.

  Here, as shown in FIG. 3C, by forcing the tip 6e of the tightening portion 6 to the mark 6d, it is possible to prevent the tightening portion 6 from being forgotten to be tightened, and with a predetermined tightening force. The band 6b can be fastened to the attachment portion 3.

  Further, as shown in FIG. 1, in a state in which the tightening portion 6 is properly attached to the attachment portion 3, the two ridges 3b of the inner surface 3a on the large diameter side (see FIG. 2) contact the outer surface of the drain pipe 1a. Since the groove 3d of the outer surface 3c opposite to the two protrusions 3b is tightened by the band 6b of the tightening part 6, the two protrusions 3b come into pressure contact with the outer surface of the drain pipe 1a. Can be firmly fixed to the drain pipe 1a.

  In step S16, the motor of the air conditioning indoor unit 1 is operated using a temporary power source in step S16, and a drainage test of the drain pipe is performed. After confirming that there is no leakage, in step S17, the drain pipe 1a around the air conditioning indoor unit 1 is dew-proofed.

  Next, in step S18, a light iron ceiling foundation is attached, and in step S19, the ceiling board is pasted to complete the installation of the air conditioning indoor unit and the ceiling work.

It is sectional drawing which shows one Embodiment of the drain hose coupling of the air-conditioning indoor unit concerning this invention. It is sectional drawing which shows the attaching part and reinforcement part of the drain hose coupling of FIG. It is a figure which shows the clamp | tightening part of the drain hose coupling of FIG. 1, Comprising: (a) is a front view, (b) is a side view, (c) is a side view which shows the positional relationship of the band front-end | tip part and a mark in use condition. FIG. It is the flowchart which compared the installation and ceiling construction method of the air conditioning indoor unit concerning the past and this invention. It is the schematic for demonstrating an example of the drain piping installation method of the conventional air conditioning indoor unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air-conditioning indoor unit 1a Drain pipe 2 Joint 3 Mounting part 3a Large diameter inner surface 3b Projection 3c Large diameter outer surface 3d Groove 3e Small diameter outer surface 3f Projection 4 Hose part 5 Reinforcement part 6 Tightening part 6a Housing 6b Band (Hoob)
6c Threaded portion 6d Mark 6e Tip 31 Air-conditioning indoor unit 31a Drain pipe 32 Rising pipe 33 Side running pipe 34 Connection part 35 Band

Claims (9)

At one end, a first connection for connecting to the drain pipe of the air conditioning indoor unit,
A second connection portion for connecting to a pipe for guiding the drain to the outside of the room where the air conditioning indoor unit is installed at the other end;
A drain hose coupling for an air conditioning indoor unit, wherein the length can be adjusted according to a distance between a drain pipe of the air conditioning indoor unit and a pipe for guiding the drain. The first connection portion is made of a cylindrical elastic body into which the drain pipe can be inserted so as to surround an outer peripheral portion of the drain pipe of the air conditioning indoor unit,
The second connection part is formed of a cylindrical elastic body into which the pipe can be inserted so as to surround an outer peripheral part of the pipe for guiding the drain,
The hose portion continuous with the first and second connection portions has heat insulation and elasticity,
The boundary portion between the first and second connecting portions and the hose portion includes a reinforcing portion that reinforces the mechanical strength of the boundary portion,
A tightening portion for tightening the first and second connection portions from the outside in a state where the first and second connection portions are respectively inserted into the drain pipe or the pipe for guiding the drain of the air conditioning indoor unit. The drain hose joint of an air-conditioning indoor unit according to claim 1, comprising:   The air conditioning according to claim 1 or 2, wherein the reinforcing portion is a cylindrical reinforcing member that is integrally formed with the first and second connecting portions and is mounted inside the hose portion. Drain hose fittings for indoor units.   The outer peripheral surface of the cylindrical reinforcing member is provided with a plurality of protrusions formed around the outer peripheral surface, and the outer peripheral surface and the inner peripheral surface of the hose portion are fixed via an adhesive. A drain hose coupling for an air conditioning indoor unit according to claim 3.   The inner peripheral surface in contact with the outer peripheral portion of the drain pipe or the pipe for guiding the drain of the first and second connecting portions includes one or more protrusions formed over the inner peripheral surface. The drain hose joint for an air-conditioning indoor unit according to any one of claims 1 to 4.   A groove portion for mounting the band portion of the tightening portion over the entire circumference on the outer circumferential surface facing the one or more protrusions formed over the inner circumferential surface of the first and second connection portions. The drain hose joint for an air-conditioning indoor unit according to claim 5, comprising:   The drain hose for an air conditioning indoor unit according to claim 6, wherein the tightening portion includes a mark for confirming a mounting state of the band portion in the groove portion of the first and second connection portions. Fittings.   The first and second connection portions have an inner diameter corresponding to a diameter of an outer peripheral portion of the drain pipe or a pipe for guiding the drain, and have a constant outer diameter regardless of the diameter of the outer peripheral portion. A drain hose coupling for an air conditioning indoor unit according to any one of claims 1 to 7. A drain pipe installation method for an air conditioning indoor unit installed on a ceiling,
Connecting the first connecting portion of the drain hose joint of the air conditioning indoor unit according to any one of claims 1 to 8 to a drain pipe of the air conditioning indoor unit;
Connecting the second connection part to a pipe for guiding the drain to the outside of the room in which the air conditioning indoor unit is installed;
A drain piping installation method for an air conditioning indoor unit, wherein a ceiling base and a ceiling board of a ceiling portion where the air conditioning indoor unit is installed are laid.

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