JP2012233675A - Pipe unit for drain-up - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mainly reduce troubles in construction, and to perform a maintenance/inspection job and a water leak test without a hitch.SOLUTION: A pipe unit integrally includes a heat-insulated flexible pipe 5 and a pair of joint members (heat-insulated joints 6, 7) fixed in advance to both ends of the heat-insulated flexible pipe 5. One joint member (heat-insulated joint 6) is connected to the drain outlet 1a of an air conditioner 1, whereas the other joint member (heat-insulated joint 7) is connected to the fixed part of a drain pipe 2 installed at a higher position than the drain outlet 1a. At least a part of an upper detour 4 is thus configured.

Description

  The present invention relates to a drain-up piping unit. More specifically, the present invention relates to a drain-up piping unit for connecting between a drain port of an air conditioner and a fixed portion of the drain piping.

  For example, a drain pipe for discharging drain accumulated inside is connected to a large air conditioner or the like. This drain pipe is mainly constituted by a gradient pipe portion having a required drainage gradient and extending substantially in the lateral direction. An upper detour portion as a part of the drain pipe is provided between the gradient pipe portion and the air conditioner. The upper bypass portion lifts the inlet portion of the gradient pipe portion to a position higher than the drain port of the air conditioner, and prevents the drain from flowing backward from the gradient pipe portion to the drain port of the air conditioner. This is called drain-up piping.

  The upper detour part is at least an upward part extending substantially upward from the drain port of the air conditioner to a position higher than the inlet part of the gradient pipe part, and from the upper end part of the upward part to the inlet part of the gradient pipe part. And a descending portion extending substantially downward.

  A pump for forcibly discharging the drain is provided inside the air conditioner. Moreover, the above-mentioned gradient pipe part and upper detour part are generally configured as a fixed pipe, and the entire outer periphery thereof is covered with a heat insulating material in order to prevent condensation.

  According to such a configuration, the drain accumulated in the air conditioner is forcibly discharged to the drain pipe by the pump provided in the air conditioner. The drain sent to the drain pipe reaches the gradient pipe section over the upper detour section by the pressure of the pump. The drain that has reached the gradient pipe part is naturally flown down in the gradient pipe part by gravity and is discharged to the outside. At this time, since the temperature of the drain is low, it is possible to prevent the condensation on the outer peripheral surface of the drain pipe by covering the entire gradient pipe part and the upper bypass part constituting the drain pipe with a heat insulating material.

  In addition, a heat insulating flexible tube is also used for the upper bypass portion of the drain pipe described above (see, for example, Patent Document 1).

Utility model registration No. 3150922

  However, the drain pipe described above has the following problems.

  In other words, when the entire drain pipe is constituted by a fixed pipe, it is necessary to create an upper detour part connecting the drain port of the air conditioner and the inlet part of the gradient pipe part at the site, which takes time and labor. Moreover, since the whole outer periphery of a gradient pipe part and an upper detour part must be covered with a heat insulating material in order to prevent dew condensation, construction takes time. The trouble of constructing the heat insulating material is particularly problematic in the upper detour part having a complicated shape, rather than the gradient pipe part having a simple shape.

  In addition, the construction of the gradient pipe part and the upper detour part and the construction of the heat insulating material for these are different from each other, so it is not efficient to perform both constructions separately, and after both constructions are completed. Confirmation work is also complicated. Furthermore, it is troublesome because the heat insulating material must be removed or attached during maintenance inspection.

  Therefore, it is desired to reduce these problems as much as possible.

  Then, like patent document 1, by comprising the whole upper detour part using a heat insulation flexible tube, the heat at the time of creating an upper detour part by the field matching, and the heat insulation with respect to the upper detour part with the most complicated shape The construction of the material can be omitted. However, in this case, the following problems are newly generated.

  That is, when the above-mentioned heat-insulating flexible tube is used to form the upper detour portion, the long heat-insulating flexible tube wound in a coil shape (or wound in units of several tens of meters) is made longer. It is necessary to cut and bring it to the construction site, cut the heat-insulated flexible tube to the optimum length according to the situation at the site, and further fine-tune the length, resulting in waste of the heat-insulated flexible tube , Trouble of fine adjustment occurs.

  Next, between the both ends of the heat insulation flexible pipe adjusted to the optimum length at the construction site and the drain port of the air conditioner and the inlet part of the gradient pipe part, each of them is securely connected at the site to prevent water leakage, etc. It is necessary to prevent it from occurring, and construction takes time.

  And it is necessary to cover partially with a heat insulating material about the connection part of the both ends of a heat insulation flexible tube, the drain port of an air conditioner, and the entrance part of a gradient pipe part. That is, the problem of the construction of the heat insulating material for the connection portion of the heat insulating flexible tube remains without being solved. Thus, if the partial construction of the heat insulating material remains, in addition to the same problem as described above, there is a possibility of forgetting to install the heat insulating material on the connection portion.

  Furthermore, after completion of the drain pipe construction, it is necessary to fill the upper detour with water and perform a leak test or a full water test, but both ends of the heat insulating flexible pipe are connected to the drain port of the air conditioner and the inlet of the gradient pipe unit. In the case of forming the upper detour part by directly connecting to the upper part, there is no means for putting water into the upper detour part or for filling the upper detour part with water for the water leakage test. That is, the leak test cannot be performed well.

  In addition, when the upper bypass portion is composed of a heat-insulating flexible tube, the heat-insulating flexible tube is soft and has no shape-retaining property, or the shape-retaining property is low. There must be.

In order to solve the above-mentioned problem, the invention of claim 1 integrally includes a heat-insulating flexible tube and a pair of joint members fixed in advance to both ends of the heat-insulating flexible tube. By connecting the member to the drain port side of the air conditioner and connecting the other joint member to the fixed part of the drain pipe installed at a position higher than the drain port, it is possible to prevent drain backflow. It is characterized in that at least a part of the upper detour part can be configured.
According to a second aspect of the present invention, the fixed portion of the drain pipe has a descending portion of the upper bypass portion, and the other joint member is descended from the drain port by being connected to the upper end portion of the descending portion. An ascending part toward the upper end of the part can be configured.
According to a third aspect of the present invention, the fixed part of the drain pipe has a gradient pipe part of the drain pipe, the other joint member is connected to an inlet part of the gradient pipe part, and the heat insulating flexible pipe is It is characterized in that an upper detour portion interposed between the drain port and the inlet portion of the gradient pipe portion can be configured by adopting an upper detour shape.
The invention of claim 4 is characterized in that at least one of the joint members is a heat insulating joint.
The invention according to claim 5 is characterized in that the one joint member is provided with a hanging tool attaching portion to which a hanging tool can be attached.
The invention of claim 6 is characterized in that an adhesive application protrusion capable of applying an adhesive is provided at the peripheral edge of the attachment port to the drain port of the one joint member.
The invention according to claim 7 is characterized in that an adhesive application confirmation notch is provided in the adhesive application protrusion.
The invention according to claim 8 is characterized in that at least one of the joint members is a joint for a pipe with a heat insulating layer connectable to a pipe with a heat insulating layer having a heat insulating layer therein.

According to invention of Claim 1, the following effects can be acquired by the said structure. That is, by integrating the heat insulating flexible pipe and the pair of joint members in advance as a unit part, it is possible to easily connect between the drain port of the air conditioner and the fixed portion of the drain pipe, and A drain-up piping unit that can be configured at least in part can be obtained.
According to invention of Claim 2, the following effects can be acquired by the said structure. That is, by making the drain-up piping unit only the ascending part of the upper detour part, the heat insulating flexible pipe is shortened so that excessive bending or the like is not given to the heat insulating flexible pipe. Therefore, it is possible to stably install the drain-up piping unit, and it is possible to eliminate the need to fix the end portion or intermediate portion of the drain-up piping unit.
According to invention of Claim 3, the following effects can be acquired by the said structure. In other words, by making the drain up piping unit the entire upper detour part, it is possible to eliminate the trouble of creating at least a part of the upper detour part with a fixed pipe, and to easily configure the upper detour part. This makes it possible to facilitate construction.
According to invention of Claim 4, the following effects can be acquired by the said structure. That is, by using at least one of the joint members as a heat insulating joint, it is possible to eliminate the trouble of partially constructing the heat insulating material on the joint member. According to the fifth aspect of the present invention, the following operational effects can be obtained by the above configuration. That is, by providing a suspension attachment part on one of the heat insulation joints, even if a heat insulation flexible pipe that is difficult to maintain its own shape is attached to the drain port of the air conditioner, the heat insulation flexible pipe is obstructed. And can be stably suspended and supported.
According to invention of Claim 6, the following effects can be acquired by the said structure. That is, by providing an adhesive application protrusion at the peripheral edge of the attachment port to the drain port of one joint member, the adhesive application area can be increased so that bonding can be reliably performed on site. be able to.
According to invention of Claim 7, the following effects can be acquired by the said structure. That is, by providing the adhesive application protrusion on the adhesive application protrusion, the adhesive applied to the adhesive application protrusion protrudes from the adhesive application check notch. Can be visually confirmed. As a result, forgetting to apply the adhesive can be prevented.
According to invention of Claim 8, the following effects can be acquired by the said structure. That is, by forming at least one of the joint members as a joint for a pipe with a heat insulation layer that can be connected to a pipe with a heat insulation layer having a heat insulation layer therein, the entire drain pipe can be constituted by the pipe with a heat insulation layer. Since it becomes possible, it becomes possible to construct | assemble a drain piping easily and reliably as what was provided with heat insulation by itself. Thereby, it is possible to almost completely eliminate the necessity of covering the outside of the drain pipe or drain up pipe unit with the heat insulating material.

It is a perspective view which shows the air conditioner and drain piping concerning Example 1 of this invention. It is a figure which shows the drain up piping unit of FIG. It is a perspective view of one heat insulation joint of the drain up piping unit of FIG. FIG. 4 is a cross-sectional view of FIG. 3. It is sectional drawing of the other heat insulation joint of the drain up piping unit of FIG. It is a perspective view which shows the air conditioner and drain piping concerning Example 2 of this invention. It is a figure which shows the drain up unit of FIG. It is an exploded view of the joint joint of FIG. It is sectional drawing of the heat insulation joint of FIG. It is sectional drawing of one heat insulation joint of FIG. 6 which has a hanging tool attaching part. It is sectional drawing of one heat insulation joint of FIG. 6 which has the protrusion part for adhesive agent application. It is a partial expansion perspective view which shows the notch part for adhesive application confirmation of one heat insulation joint of FIG. It is sectional drawing of the drain up unit concerning Example 3 of this invention. It is sectional drawing of one heat insulation joint of FIG. It is sectional drawing of the heat insulation flexible tube of FIG. FIG. 14 is a perspective view of the joint joint of FIG. 13.

The present invention mainly has a configuration capable of reducing construction problems and performing maintenance inspections and water leakage tests without hindrance.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings.

<Configuration> The configuration will be described below.
1 to 5 show the first embodiment.

  FIG. 1 is a perspective view showing an air conditioner 1 and a drain pipe 2. As shown in the figure, a drain pipe 2 for discharging drain accumulated inside is connected to a large-scale air conditioner 1 or the like. The drain pipe 2 is mainly constituted by a gradient pipe portion 3 having a required drainage gradient and extending substantially in the lateral direction. An upper detour portion 4 as a part of the drain pipe 2 is provided between the gradient pipe portion 3 and the air conditioner 1.

  The upper detour unit 4 lifts the inlet 3a of the gradient pipe unit 3 to a position higher than the drain port 1a of the air conditioner 1, and also causes the reverse flow of drain from the gradient pipe unit 3 to the drain port 1a of the air conditioner 1. It is for making it possible to prevent and is called drain-up piping. The reason for providing the upper bypass portion 4 is that the large air conditioner 1 is attached to the ceiling surface, and the gradient tube portion 3 is disposed above the ceiling surface. In the figure, a substantially horizontal short extension pipe (fixed pipe) is attached to the drain port 1a of the air conditioner 1, and the upper bypass portion 4 is indirectly attached to the extension pipe. The upper bypass portion 4 may be directly attached to the drain port 1a.

  The upper detour portion 4 described above is inclined at least from the drain port 1a of the air conditioner 1 toward the position higher than the inlet portion 3a of the gradient pipe portion 3 and the upper end portion of the ascending portion 4a. A descending portion 4b extending substantially downward toward the inlet portion 3a of the tube portion 3; The lower end portion of the descending portion 4b is connected to the inlet portion 3a of the gradient pipe portion 3 via a joint member such as an elbow.

Note that a pump (not shown) for forcibly discharging the drain is provided inside the air conditioner 1. In this embodiment, the case where the above-described gradient pipe part 3 and the descending part 4b of the upper detour part 4 are configured as the fixed pipe 2a in the drain pipe 2 is illustrated.
However, although not shown in particular, only the gradient pipe part 3 is used as the fixed pipe 2a, a part of the descending part 4b of the gradient pipe part 3 and the upper bypass part 4 is used as the fixed pipe 2a, or the gradient pipe part 3 is used. Further, it is structurally possible that the lower part 4b and a part of the upper part 4a in the upper detour part 4 are fixed pipes 2a. Although these cases are not particularly described, it is possible to apply the present embodiment with some modifications.
The fixed pipe 2a may be formed by applying a heat insulating material (not shown) on its outer periphery to prevent condensation, or the fixed pipe 2a is a conventionally known pipe with a heat insulating layer (Sekisui Chemical Co., Ltd.). (Eslon AC drain pipe) and a heat-insulating joint may be used to eliminate the need for a heat insulating material. In this case, the latter is assumed.

  In addition to the basic configuration as described above, the present embodiment has the following configuration.

(Configuration 1-1)
As shown in FIG. 2, a drain-up pipe integrally including a heat insulating flexible pipe 5 and a pair of joint members (heat insulating joints 6 and 7) fixed in advance to both ends of the heat insulating flexible pipe 5. A unit 8 is provided. And one joint member (heat insulation joint 6) is connected to the drain port 1a side of the air conditioner 1, and the other joint member (heat insulation joint 7) is a drain installed at a position higher than the drain port 1a. By connecting to a fixed part of the pipe 2 (fixed pipe 2a such as the descending part 4b of the gradient pipe part 3 and the upper bypass part 4 described above), at least a part of the upper bypass part 4 capable of preventing the backflow of drain is provided. Be configurable.

(Configuration 1-2)
For example, when the fixed part of the drain pipe 2 (the fixed pipe 2a described above) has the descending part 4b of the upper detour part 4, the other joint member (the heat insulating joint 7) described above is connected to the descending part 4b. By connecting to the upper end portion, the ascending portion 4a from the drain port 1a toward the upper end portion of the descending portion 4b can be configured.

Here, the heat insulating flexible tube 5 is a tube member having both heat insulating properties and flexibility. The heat insulating flexible tube 5 can be constituted by, for example, a two-layered covered hose formed by covering the outer periphery of a soft or relatively hard vinyl chloride hose with urethane foam.
The heat insulating flexible tube 5 has a length that allows connection between the drain port 1a and the upper end of the descending portion 4b with a slight margin, for example. At this time, it is assumed that the heat insulating flexible tube 5 has a predetermined fixed length (fixed length). In other words, a standard length is obtained by cutting in advance to the above-mentioned fixed length at a factory (standardization of length). In this case, normalization is performed with a length necessary for the ascending portion 4a. Further, as will be described later, when the upper bypass portion 4 is configured only by the drain-up piping unit 8, the heat insulating flexible pipe 5 is provided with a standard for the length necessary to configure the entire upper bypass portion 4. May be. Note that the standard length described above is not limited to one type, and several standards having different lengths may be prepared. And the fixing | fixed part (above-mentioned fixed piping 2a) of the drain piping 2 is created on-site according to the drain up piping unit 8 to be used.

The heat insulating flexible tube 5 and the joint members (heat insulating joints 6 and 7) are fixed by, for example, adhesion. The joint member (the heat insulation joints 6 and 7) is fixed to the heat insulation flexible tube 5 in advance in a factory. As a result, it is possible to perform product inspection such as adhesion inspection and water-stopping inspection on the fixed part to eliminate defective products, and to perform product warranty, quality assurance, and the like.
As described above, the drain-up piping unit 8 becomes a unit part or a composite part having quality that can be supplied to the market as a standard part. In addition, the short drain-up piping unit 8 constituting the ascending portion 4a does not need to be fixed from the outside by some fixing means, or has a low necessity for fixing.

(Configuration 1-3)
Although already described, at least one of the joint members is a heat-insulating joint 6 or 7 as shown in FIG. 3, FIG. 4, or FIG. 5.

  Here, the heat-insulating joints 6 and 7 are joint members that themselves have heat insulation properties, and joint members that can obtain heat insulation properties as a result of having a structure advantageous for ensuring heat insulation properties.

As described later, the heat insulating joints 6 and 7 have a heat insulating layer 9 enclosed therein (internal heat insulating joint), a thickness sufficiently thicker than usual (thick heat insulating joint), It is possible to ensure the heat insulation by utilizing the heat insulation properties of the one having a heat insulating material attached to the outer periphery in advance (peripheral heat insulation joint), the heat insulation flexible pipe 5, the fixed portion of the drain pipe 2 (fixed pipe 2a), and the like. What was made into (a joint using an external heat insulating material) etc. can be used.
In this case, both the heat-insulating joints 6 and 7 are those in which the heat-insulating layer 9 is enclosed (internal heat-insulating joints).

  The heat-insulating joints 6 and 7 in which the heat-insulating layer 9 is sealed inject a non-foamable resin in an amount smaller than the volume of the molding space into a molding die (not shown) (short shot injection). When the surface of the non-foaming resin is solidified to some extent, the foaming resin is injected and further pressure is applied. And the heat insulating layer 9 is formed inside the non-foamable resin by foaming of the foamable resin.

  The non-foamable resin is preferably colored or colorless, transparent or translucent so that the foaming state of the foamable resin can be observed from the outside. In this way, when the non-foamable resin is made transparent or translucent so that the inside can be observed from the outside, it is possible to adhere to the heat insulating flexible tube 5 by using a colored adhesive. The state can be visually recognized from the outside.

  Here, first, the one heat insulating joint 6 will be described with reference to FIGS. 3 and 4. The one heat insulating joint 6 is an elbow member integrally including a bent tube portion 6a and a receiving port portion 6b and a differential port portion 6c provided to the openings at both ends of the bent tube portion 6a. . Here, the above-described receiving portion 6b is for externally fitting and fixing to the drain port 1a side of the air conditioner 1, and the outlet portion 6c is inserted into the lower end portion of the heat insulating flexible tube 5. It is intended for fixing.

  And the above-mentioned heat insulation layer 9 is provided in the thickness inside of the bending pipe part 6a.

  Moreover, the receiving part 6b of one heat insulation joint 6 is comprised by the thick wall thicker than usual.

  Furthermore, the outer peripheral portion of the outlet portion 6c of one heat insulating joint 6 is for protecting the lower end portion of the heat insulating flexible tube 5 fitted and fixed to the outlet portion 6c itself and the outlet portion 6c. The protective peripheral wall portion 6d is integrally formed. The protective peripheral wall 6d is provided with an annular recess 6e having a size that allows the heat insulating flexible tube 5 to be inserted between the outer periphery of the opening 6c, and the tip of the protective peripheral wall 6d is The tip of the opening 6c is slightly shorter than the tip of the opening 6c so that the tip can protrude outward. The protective peripheral wall portion 6d is constituted by a thick wall that is thicker than usual.

(Configuration 1-4)
As shown in FIG. 5, the other joint member (heat insulating joint 7) described above has an inspection port 11.

The other heat-insulating joint 7 having the inspection port 11 includes a T-shaped branch pipe portion 7a, and a receiving portion 7b and a receiving portion that are respectively provided in the middle and both ends of the branch pipe portion 7a. It is set as the cheese member which has 7c and the inspection port 11 integrally. Here, the above-described intermediate receiving portion 7 b is for externally fixing to the upper end portion of the heat insulating flexible tube 5, and the lower end receiving portion 7 c is externally fitted to the fixing portion of the drain pipe 2. It is intended for fixing. In this case, the receiving portion 7c at the lower end is externally fitted and fixed to the upper end portion of the descending portion 4b.
And the above-mentioned heat insulation layer 9 is provided in the inside of the branch pipe part 7a.

  Further, the receiving portion 7 b and the receiving portion 7 c of the other heat insulating joint 7 can have the same structure as the receiving portion 6 b of the one heat insulating joint 6. Further, the receiving port 7b and the receiving port 7c (particularly the receiving port 7b) of the other heat insulating joint 7 may have the same structure as the differential port 6c and the protective peripheral wall 6d of the one heat insulating joint 6. it can.

  A lid member 12 is attached to the inspection port 11 at the upper end so as to be openable and closable. The lid member 12 has a flat lid body 12a that can be brought into contact with and closed on the end face of the inspection port 11, and a grip portion 12b that can manually operate the lid body 12a from the outside. Further, in order to seal and detach the lid member 12 with respect to the inspection port 11, a female screw portion 11 a is formed on the inner peripheral surface of the inspection port 11, and on the back side of the lid member 12, A male screw portion 12c that can be screwed to the female screw portion 11a is provided. Although not shown, a seal member can be interposed between the female screw portion 11a and the male screw portion 12c.

(Configuration 1-5)
As the above modification, although not particularly shown, when the fixed portion of the drain pipe 2 (the fixed pipe 2a described above) has the gradient pipe portion 3 (only) of the drain pipe 2, the other joint described above is used. A member (heat insulating joint 7) is connected to the inlet portion 3a of the gradient tube portion 3, and the heat insulating flexible tube 5 is formed in a detour shape upward, so that the gap between the drain port 1a and the inlet portion 3a of the gradient tube portion 3 is You may make it be able to comprise the upper detour part 4 interposed by.
In this case, the heat insulating flexible tube 5 is set to be approximately twice as long as the above, so that both the ascending portion 4a and the descending portion 4b can be configured.
The other joint member (the heat insulating joint 7) described above is configured to connect the receiving portion 7c to the inlet portion 3a of the gradient pipe portion 3 with the receiving portion 7b facing upward. Thereby, it becomes possible to comprise the upper detour part 4 only by the drain up piping unit 8. In this case, at least the middle part of the drain-up piping unit 8 is fixed by fixing means (not shown) (see the hanging tool 21 in FIG. 6) or the like.

  <Operation> The operation of this embodiment will be described below.

  The drain accumulated in the air conditioner 1 is forcibly discharged to the drain pipe 2 by a pump provided in the air conditioner 1. The drain discharged to the drain pipe 2 gets over the upper bypass part 4 by the pressure of the pump and reaches the gradient pipe part 3. The drain that has reached the gradient pipe section 3 is naturally flown down in the gradient pipe section 3 by gravity and is discharged to the outside. At this time, since the temperature of the drain is low, the fixed pipe 2a constituting the drain pipe 2 has a heat insulating structure, so that the occurrence of dew condensation in the portion of the drain pipe 2 is prevented.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 1-1)
By integrating the heat insulating flexible tube 5 and the pair of joint members (heat insulating joints 6 and 7) in advance as unit parts, the space between the drain port 1a of the air conditioner 1 and the fixed portion of the drain pipe 2 is obtained. A drain-up piping unit 8 that can be easily connected and can constitute at least a part of the upper bypass portion 4 can be obtained.
At this time, since the heat insulating flexible tube 5 and the pair of joint members (heat insulating joints 6 and 7) are integrated in advance and unitized, the length of the heat insulating flexible tube 5 can be adjusted on site at the time of construction. It is possible to make fine adjustments and to eliminate the trouble of assembling the heat insulating flexible tube 5 and the joint members (heat insulating joints 6 and 7), and from the mounting portion between the heat insulating flexible tube 5 and the heat insulating joints 6 and 7. It is possible to inspect and fix the connection securely so that no water leakage occurs, and a pair of joint members (heat insulating joints 6 and 7) are bonded and fixed to the heat insulating flexible tube 5 at the site. Compared to the case, the reliability can be improved and the quality can be improved.

  In this case, the drain-up piping unit 8 is constituted by the heat insulating flexible pipe 5 and the pair of heat insulating joints 6 and 7, and thus has heat insulating performance (or anti-condensation performance) by itself. Therefore, it is possible to eliminate the need to confirm the construction for piping and insulation work after installing another insulation material on the outer periphery in the post process, after that, all the insulation work for that part is completed just by attaching to the pipe. . Further, since the drain-up piping unit 8 does not need to be covered with another heat insulating material, maintenance and inspection can be easily performed.

(Effect 1-2)
In addition, by making the drain-up piping unit 8 only the upward portion 4a of the upper detour portion 4, the heat insulating flexible tube 5 is shortened, and excessive bending or the like is given to the heat insulating flexible tube 5. Therefore, the drain-up piping unit 8 can be stably installed, and it is possible to eliminate the need to fix the end portion or the intermediate portion of the drain-up piping unit 8.

(Effect 1-3)
By making the joint members heat-insulating joints 6 and 7, it is possible to eliminate the trouble of partially constructing the heat insulating material on the joint members. In particular, by using the heat-insulating joints 6 and 7 in which the heat-insulating layer 9 is enclosed as the joint member, high heat-insulating properties can be obtained. Moreover, the handling of the heat insulation joints 6 and 7 at the time of construction and maintenance inspection can be facilitated.

(Effect 1-4)
Since the other heat insulating joint 7 has the inspection port 11, the inspection and cleaning inside the drain pipe 2 can be performed at any time using the inspection port 11. Further, the water leakage test after the completion of the construction of the drain pipe 2 can be easily and reliably performed using the inspection port 11.

(Effect 1-5)
As a modification, the drain-up piping unit 8 can constitute the entire upper bypass portion 4, so that it is possible to eliminate the trouble of creating at least a part of the upper bypass portion 4 with the fixed piping 2 a. The detour part 4 can be easily configured, and the construction can be facilitated.

6 to 12 show a second embodiment of the present invention.
Since the second embodiment is the same as the first embodiment in many parts, the description of the common parts is omitted. However, it is needless to say that the description of the first embodiment can be the description of the second embodiment if necessary.

<Configuration> The configuration of this embodiment will be described below.
First, the structural difference between this embodiment and the first embodiment will be described.
First, in the said Example 1, although the cheese-shaped coupling member (heat insulation coupling 7) is attached with respect to the other edge part of the drain up piping unit 8, in this Example, as shown in FIG. In addition, a cheese-shaped joint member 15 (heat insulation joint) similar to the heat insulation joint 7 is attached to the upper end portion of the descending portion 4b. That is, the joint member 15 is provided on the fixed pipe 2a side.

  Next, in the first embodiment, one heat-insulating joint 6 of the drain-up piping unit 8 is directly or indirectly to the drain port 1a of the air conditioner 1 through a short extension pipe (fixed pipe). In this embodiment, a short heat insulating flexible tube 1b similar to the heat insulating flexible tube 5 is attached to the drain port 1a of the air conditioner 1. The heat insulating flexible tube 1b has an advantage that it does not need to be covered with a heat insulating material because it has a heat insulating property by itself. On the other hand, since it is flexible, the shape retaining property is low or the self shape cannot be maintained. Has the disadvantages. This structure may be applied to the first embodiment. Conversely, the structure of the first embodiment may be applied to the second embodiment.

  And as for the above equipment structure, the drain-up piping unit 8 of this embodiment is provided with the following configuration.

(Configuration 2-1)
First, as shown in FIG. 7, a joint joint that can be connected to the other end of the drain-up piping unit 8 as a joint member (heat insulating joint 7) to the joint member 15 (an intermediate receiving portion thereof). 7 'is provided.
The joint joint 7 ′ has a heat insulating joint 18 and a connecting member 19 as shown in FIGS. 8 and 9.
The heat-insulating joint 18 has a mouth part 18a that can be inserted into the heat-insulating flexible tube 5 at one end, and a mouth part 18b that can be attached to the connecting member 19 at the other end. A heat insulating material 18c (outer peripheral heat insulating material) is previously attached to the outer peripheral portion of 18b (outer peripheral heat insulating joint). Further, a protective peripheral wall portion 18d similar to the above-described protective peripheral wall portion 6d is provided on the outer periphery of the opening portion 18a via an annular concave portion 18e having a size in which the heat insulating flexible tube 5 is just inserted.
On the other hand, the connecting member 19 has a stepped shape having an opening portion 19a and a connecting portion 19b, and the opening portion 19a is inserted and fixed to the receiving portion 18b of the heat insulating joint 18 described above. Further, the connecting portion 19b is attached to the joint member 15 (an intermediate receiving portion thereof). The connection part 19b can be a slot or a receiving part. When the connecting portion 19b is a receiving portion, a connecting short pipe portion is attached to an intermediate receiving portion of the joint member 15. In addition, between the heat insulation joint 18 and the connection member 19 is fixed by adhesion | attachment. This adhesion is performed in advance at the factory, and in the same manner as the heat-insulating joint 6, an adhesion test and a water-stop test are also performed.

(Configuration 2-2)
Next, a suspension attachment portion 22 to which a suspension 21 as shown in FIG. 6 can be attached is provided on one joint member (heat insulation joint 6) in the drain-up piping unit 8.
In this case, the hanger 21 includes a pair of half-arc portions that can be attached along the outer periphery of the receiving portion 6b of the heat-insulating joint 6, and a pair of fastening surface portions provided at both ends of each half-arc portion. And a clamping member 23 that can be fastened and fixed to the outer periphery of the heat-insulating joint 6 by connecting and fastening the fastening surface portions at both ends of the pair of half-arc-shaped portions with bolts. . A lower end portion of a suspension member 24 such as a suspension rod or a suspension wire constituting the suspension tool 21 is attached to the clamp member 23. On the other hand, as shown in FIG. 10, the hanging tool attaching portion 22 is provided on the outer periphery of the receiving portion 6 b in the heat insulating joint 6, and has a width dimension substantially equal to or slightly wider than the clamp member 23. The groove has a depth dimension substantially equal to or slightly deeper than the thickness of the groove 25 and extends in the circumferential direction. Alternatively, the hanging tool attaching portion 22 may be a pair of protrusions provided with a gap substantially equal to or slightly wider than the width dimension of the clamp member 23. In this case, the clamp member 23 is installed between the pair of protrusions. Note that a band member having a pair of fastening surface portions at both ends, a hook member, or the like may be used for the hanger 21 instead of the clamp member 23.
Moreover, it is preferable that the heat insulation joint 6 has the heat insulation layer 9 inside like the above-mentioned Example 1. However, as shown in FIG. May be provided (thick heat insulation joint).

(Configuration 2-3)
Furthermore, if necessary, as shown in FIG. 11, an adhesive can be applied to the peripheral portion of the attachment port (receiving port 6b) on the drain port 1a side of one of the coupling members (heat insulating joint 6). An adhesive application protrusion 27 is provided.
This adhesive application protrusion 27 has a drain port 1a inserted therein, has an inner peripheral surface that is flush with the inner peripheral surface of the receiving port 6b, and extends almost entirely. It is supposed to be a thin, almost cylindrical shape.

(Configuration 2-4)
In addition, an adhesive application confirmation notch 29 is provided in the adhesive application protrusion 27. This adhesive application confirmation cutout 29 extends in the direction of attachment to the drain port 1a and the like.
In this case, the adhesive application confirmation notch 29 is provided in a slit shape above the adhesive application protrusion 27. However, the adhesive application confirmation cut-out portion 29 can be provided at a position other than the upper portion of the adhesive application protrusion 27, or can have a shape other than a slit shape such as a hole.

The configuration other than the above is almost the same as that of the first embodiment.
In addition, the “drain port 1a” includes a case where it is directly attached to the drain port 1a, and a case where it is indirectly attached via the above-described extension pipe (fixed pipe), the heat insulating flexible pipe 1b, etc. The same applies to Example 1).
Further, the drain-up piping unit 8 described above can also constitute the entire upper bypass portion 4 as in the first embodiment.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 2-1)
A joint joint 7 ′ that can be connected to the joint member 15 (the joint member 15 attached to the upper end of the descending portion 4 b in the upper bypass portion 4) is connected to the other end of the drain-up piping unit 8. By providing, the configuration of the other end of the drain-up piping unit 8 can be simplified, and the drain-up piping unit 8 can be easily attached to the upper end of the descending portion 4b.
On the other hand, by attaching the joint member 15 to the upper end of the descending portion 4b in the upper detour portion 4, the inspection port 11 can be stably installed on the fixed pipe 2a side.

(Effect 2-2)
Even if the heat insulation flexible tube 1b that is difficult to maintain its own shape is attached to the drain port 1a of the air conditioner 1 by providing the hanging tool attachment portion 22 on one of the heat insulation joints 6 (the outer periphery thereof). The heat insulating flexible tube 1b can be stably suspended without hindrance. Note that the drain-up piping unit 8 may be supported by suspending one or more positions of the intermediate portion of the heat insulating flexible tube 5 with the same suspending tool 21.

(Effect 2-3)
By providing the adhesive application protrusion 27 on the peripheral edge of the attachment port (receiving port 6b) to the drain port 1a or the like of one joint member (heat insulation joint 6), the adhesive application area is increased. It is possible to ensure that bonding can be performed on site.

(Effect 2-4)
By providing the adhesive application protrusion 27 on the adhesive application protrusion 27, the adhesive applied to the adhesive application protrusion 27 protrudes from the adhesive application confirmation cut 29, The application state of the adhesive can be visually confirmed. As a result, forgetting to apply the adhesive can be prevented.
In addition, since the effects other than the above are substantially the same as those of the first embodiment, they are omitted and the description of the first embodiment is used as the description of the first embodiment.

13 to 16 show Embodiment 3 of the present invention.
Since the third embodiment has substantially the same configuration as the first and second embodiments, description of common parts is omitted. However, it is needless to say that the description of Example 1 and Example 2 can be the description of Example 3 if necessary.

  <Configuration> The configuration of this embodiment will be described below.

(Configuration 3)
At least one of the joint members (heat insulation joints 6 and 7) is a joint for pipes with a heat insulation layer connectable to a pipe with a heat insulation layer having a heat insulation layer inside. In addition, also about Example 1, Example 2, at least any one joint member (heat insulation joints 6 and 7) can be used as the joint for pipes with a heat insulation layer.

  Here, the pipe with a heat insulating layer is a pipe member having a heat insulating layer inside the wall thickness as described above, and has already been commercialized by the present applicant (Sekisui Chemical Co., Ltd. ESLON AC). Drain pipe). The pipe with a heat insulating layer is thicker and has a larger outer diameter as compared with a normal piping member because the heat insulating layer is provided inside the wall.

The heat insulating joints 6 and 7 are provided with receiving portions 6b and 31b having an inner diameter substantially equal to the outer diameter of the above-described tube with a heat insulating layer, and a differential port portion having an outer diameter substantially equal to the outer diameter of the tube with a heat insulating layer. It is done. In this embodiment, both of the receptacles 6b and 31b are used, but at least one of them may be a receptacle.
And as shown in FIG. 14, the one heat insulation coupling 6 is provided with the heat insulation layer 9 in the thickness inside over the whole range of the bending pipe part 6a and the receiving port part 6b. The heat insulating layer 9 is configured to occupy about 70% of the wall thickness.

  As shown in FIG. 15, the heat insulating flexible tube 5 includes a soft foam heat insulating layer such as urethane foam or polyethylene foam around the outer periphery of a soft or relatively hard vinyl chloride hose (core material 5 a). It is constituted by a three-layered covering hose or the like which is covered with 5b and the surface is covered with a soft vinyl chloride skin material 5c. The heat insulating flexible tube 5 has a predetermined length such as 1 meter, for example. However, the length of the heat insulating flexible tube 5 is not limited to this as described above.

  Further, as shown in FIG. 16, the other heat insulating joint 7 is formed by integrating the heat insulating joint 18 and the connecting member 19 in the joint joint 7 ′ of the second embodiment (joint joint 7 ″). In other words, in this case, the joint joint 7 ″ has a port portion 31a that can be inserted into the heat insulating flexible tube 5 at one end portion, and a port portion 31b that can be attached with a tube with a heat insulating layer at the other end portion. It is supposed to have. A protective peripheral wall portion 31d similar to the above-described protective peripheral wall portion 6d is provided on the outer periphery of the opening portion 31a via an annular recess 31e having a size that allows the heat insulating flexible tube 5 to be inserted. A ring-shaped seal member 32 or the like is inserted into the receiving portion 31b as necessary. Although this joint joint 7 ″ does not itself have heat insulation properties, it can be insulated by adopting a structure in which the heat insulation flexible tube 5 and the heat insulation layer-attached tube can be accommodated and installed in a substantially abutted state. It is set as the heat insulation joint 7 (external heat insulating material utilization joint) which was able to ensure heat insulation using the heat insulation of the flexible tube 5 and a pipe with a heat insulation layer.

  In addition to the above, the configurations of the first embodiment and the second embodiment can be applied.

  <Effect> According to this embodiment, the following effects can be obtained.

(Effect 3)
By making at least one of the joint members (heat insulation joints 6 and 7) a pipe joint with a heat insulation layer that can be connected to a pipe with a heat insulation layer having a heat insulation layer inside, the drain pipe 2 as a whole has a heat insulation layer. Since it can be configured by a pipe, the drain pipe 2 can be easily and reliably constructed as having a heat insulating property by itself. Thereby, it is possible to almost completely eliminate the necessity of covering the outside of the drain pipe 2 and the drain up pipe unit 8 with the heat insulating material.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 1 Air conditioner 1a Drain port 1b Heat insulation flexible pipe 2 Drain piping 2a Fixed piping (fixing part of drain piping)
4 Upper detour part 4b Lower part 4a Up part 5 Thermal insulation flexible pipe 6 Thermal insulation joint (joint member or joint for pipe with thermal insulation layer)
7 Heat insulation joint (joint member or joint for pipe with heat insulation layer)
7 'Joint joint 7 "Joint joint 8 Drain-up piping unit 9 Heat insulation layer 11 Inspection port 21 Lifting tool 22 Lifting tool mounting part 27 Adhesive application protrusion part 29 Adhesive application check notch part

Claims (8)

  A heat insulating flexible pipe and a pair of joint members respectively fixed in advance to both ends of the heat insulating flexible pipe are integrally provided, and one joint member is connected to the drain port side of the air conditioner, By connecting the other joint member to a fixed portion of the drain pipe installed at a position higher than the drain port, it is possible to constitute at least a part of the upper bypass portion that can prevent the backflow of the drain. A drain-up piping unit characterized by that. The fixed part of the drain pipe has a descending part of the upper detour part,
2. The drain according to claim 1, wherein the other joint member is configured to be connected to an upper end portion of the descending portion so as to constitute an ascending portion from the drain port toward the upper end portion of the descending portion. Up piping unit. The fixed part of the drain pipe has a gradient pipe part of the drain pipe,
The other joint member is connected to the inlet part of the gradient pipe part, and the heat insulating flexible pipe is formed in an upward detour shape so that it is interposed between the drain port and the inlet part of the gradient pipe part. 2. The drain-up piping unit according to claim 1, wherein a detour portion can be configured.   The drain-up piping unit according to any one of claims 1 to 3, wherein at least one of the joint members is a heat insulating joint.   The drain-up piping unit according to any one of claims 1 to 4, wherein the one joint member is provided with a suspension attachment portion to which a suspension can be attached.   6. An adhesive application protrusion capable of applying an adhesive is provided at a peripheral edge portion of the attachment port to the drain port of the one joint member, according to any one of claims 1 to 5. The drain-up piping unit described.   The drain-up piping unit according to claim 6, wherein an adhesive application confirmation notch is provided in the adhesive application protrusion. The at least one of the joint members is a pipe joint with a heat insulating layer connectable to a pipe with a heat insulating layer having a heat insulating layer therein. The drain-up piping unit according to the item.