JP5286071B2 - Cap structure for drain piping of air conditioning equipment - Google Patents

Description

  The present invention relates to a cap structure for a drain pipe of an air conditioning equipment used for an air conditioning pipe in a building, and more particularly, to a cap structure for a drain pipe of an air conditioning equipment in which dew condensation countermeasures are taken.

Conventionally, with respect to the drain pipe of the air conditioning equipment, 10 or, it is known to use a heat insulating layer with a conduit member (elbow fitting 1) as shown in FIG. 11 (e.g., refer to Jpn .)

  First, in terms of configuration, in this conventional drain pipe, the thickness inside the elbow fitting 1 that connects the ends of linear PVC pipes is made of foamed resin 2 that is foam-filled during injection molding. A heat insulating layer 3 is formed.

  In such a conventional drain pipe, a heat insulating layer 3 made of foamed resin 2 is formed within the wall thickness in the air-conditioner drain pipe main body made of polyvinyl chloride (not shown) in the same manner as the elbow fitting 1. Then, each end portion of the drain pipe main body is bonded to the receiving portions 4 and 4 which are provided at both end portions of the elbow fitting 1 so that the pipe axis directions are orthogonal to each other.

  The drain pipe formed by each of the drain pipe main body and the elbow fitting 1 is connected to an air conditioning unit (not shown), and the drainage from the air conditioning unit passes through these drain pipes. It is configured to be drained down.

  Next, the effect of the drain line using the conventional drain pipe will be described.

  In the drain pipe using the conventional drain pipe constructed as described above, each drain pipe main body and the inside of the elbow fitting 1 have a heat insulating layer made of foamed resin 2 filled in foam at the time of injection molding. 3 is formed.

  For this reason, the temperature of the low temperature waste water flowing down the pipe line in the pipe is not easily transmitted to the outer surface of the drain pipe main body and the elbow pipe joint 1 and is insulated, so that the drain pipe main body and the elbow pipe joint are insulated. Condensation hardly occurs on the outer surface of 1.

  In such a conventional drain pipe, it is known that an opening for maintenance such as cleaning is provided at a lift-up portion in the drain pipe line.

The maintenance opening is closed by a cap member made of non-foamed molten resin during normal use, and is configured to be removed and cleaned during maintenance. Yes.
Japanese Patent No. 3699579 (paragraphs 0028 to 0038, FIGS. 1 and 2)

  However, in the conventional cap structure of the drain pipe of the air conditioning equipment configured as described above, the cap member is made of non-foamed molten resin, so it is difficult to say that the heat insulation performance is good.

  When the temperature of the drainage flowing down the pipe line in the pipe becomes low, there is a possibility that the outer surface of the cap member portion is condensed.

  Moreover, in the structure which winds the heat insulating material comprised by another member around this pipe line and prevents condensation, there also existed a problem that the installation space increased and the space efficiency in a building fell.

  Therefore, an object of the present invention is to provide a cap structure for a drain pipe of an air conditioner that can prevent condensation and improve space efficiency.

In order to achieve the above object, the invention described in claim 1 is characterized in that an opening for maintenance is provided in a drain line extending from an air conditioning unit provided in a building and through which drainage is inserted. In the cap structure of the drain pipe of the air conditioning equipment having a cap member that can be opened and closed so that the opening can be freely opened and closed, the cap member has a heat insulating layer made of a foamed resin material. It features a drain pipe cap structure.
Further, the cap member is characterized in that a concave portion is formed in the drain pipe inner side surface along the pipe extending direction in the drain pipe.

  Further, in the present invention, the cap member includes an outer layer portion made of a non-foamed resin material, and a heat insulating layer made of a foamed resin material located inside the outer layer portion. The drain pipe cap structure of the air conditioning equipment according to claim 1, characterized by:

  In the invention according to claim 1 configured as described above, the heat insulating performance is improved by the heat insulating layer formed of the foamed resin material of the cap member.

  For this reason, even if the low temperature drainage flows down in the drain pipe, condensation does not occur on the outer surface.

In addition, since it is not necessary to wrap a heat insulating material or the like separately as a separate member, the space efficiency in the building is good.
Further, a concave portion that is recessed along the direction in which the drain line extends in the drain pipe is formed on the inner side surface of the drain pipe of the cap member.
For this reason, in the said drain pipe line, there is little resistance in the drain pipe line of the drained water along the pipe extension direction, and drainage can be performed smoothly.

  Moreover, what was described in Claim 2 is because the heat insulation layer comprised with the foamed resin material of the said cap member is located inside the outer-layer part comprised with a non-foamed resin material, Therefore Heat insulation performance Will improve.

  For this reason, even if the low temperature drainage flows down in the drain pipe, condensation does not occur on the outer surface.

  In addition, since it is not necessary to wrap a heat insulating material or the like separately as a separate member, the space efficiency in the building is good.

  Next, based on the drawings shown in FIG. 1 to FIG. 9, the cap structure of the drain piping of the air conditioning equipment of the best mode for carrying out the present invention will be described.

  The same or equivalent parts as those in the conventional example will be described with the same reference numerals.

  In the drain pipe cap structure of the air conditioning equipment of this embodiment, as shown in FIG. 3, an air conditioning unit 7 is installed in the ceiling space 6 provided in the building 5.

  From this air conditioning unit 7, a drain line 8 through which drainage is inserted is extended.

  The drain pipe 8 is mainly composed of a unit connection member 9 in which a hose-like pipe body is covered with a rubber boot member 9a, and one end portion 9b is connected to the outer surface 7a of the air conditioning unit 7. As shown in FIG. 2, it has the adapter member 11 which connects the other end part 9c of this unit connection member 9 to the lower elbow joint 10 with a heat insulation layer.

  Further, the drain pipe 8 is provided with a lift-up portion 12.

  The lift-up part 12 is mainly composed of a straight pipe member 13 with a heat insulating layer constituting a vertical pipe part connected to the lower elbow joint 10, and an upper elbow with a heat insulating layer on the straight pipe member 13 with a heat insulating layer. It has the straight pipe member 15 with a heat insulation layer which comprises the upper horizontal piping part connected via the coupling 14. FIG.

  And the cheese joint 20 with a cap is interposed in the middle of the drain pipe line of this straight pipe member 15 with a heat insulation layer.

  This cheese joint 20 with a cap has a pair of receiving portions 20a, 20a that are connected in a straight line with the ends of the straight pipe members 15, 15 facing each other, as shown in FIG. Inside the non-foamed resin material constituting the outer wall surface portion 20b, a heat insulating layer 20c made of a foamed resin material has a substantially C-shaped cross section and has a flat strip shape and is enclosed.

In addition, a drain opening 20j formed between the receiving portions 20a and 20a is provided with an opening 20d for maintenance that opens upward.

  On the inner wall surface of the opening 20d of the cheese joint 20 with a cap, a female screw portion 20e is formed in a spiral shape.

  The opening 20d is provided with a cap member 21 with a heat insulating layer as a cap member that can be freely opened and closed.

  In the cap member 21 with a heat insulating layer, a heat insulating layer 21b made of a foamed resin material is provided in a substantially cylindrical shape inside an outer layer portion 21a mainly made of a non-foamed resin material. .

  The cap member 21 with a heat insulating layer includes a male screw portion 21c that is screwed into the female screw portion 20e, a disk-like flange portion 21d that crimps the lower surface side to the upper end portion of the opening portion 20d, and the flange. It has mainly a gripping portion 21e that protrudes upward from the central portion of the portion 21d, and is mainly configured.

  Further, as shown in FIG. 4, the straight pipe member 15 with a heat insulating layer, which has a T-shape in a side view and extends toward the lower floor, is orthogonal to the straight pipe member 15 with a heat insulating layer. A capped cheese joint 30 is provided.

  In this cheese joint 30 with cap, the end portions 15a and 17a of the straight pipe members 15 and 17 with the heat insulating layer are opposed to each other, and the receiving portions 30a and 30a connected at an angle of about 90 degrees are shown in FIG. As shown in the figure, a heat insulating layer 30c made of a foamed resin material has a substantially striped C-shaped cross section and has a plate-like strip shape inside the non-foamed resin material constituting the cylindrical outer wall surface portion 30b. Is included.

  Of these, an upper end portion facing the lower receiving portion 30a and a maintenance opening portion 30d that opens upward are provided.

  A female screw portion 30e is formed in a spiral shape on the inner wall surface portion of the opening 30d of the cheese joint 30 with cap.

  The opening 30d is provided with the heat insulating layer-attached cap member 21 as a cap member that can be freely opened and closed.

  Next, the effect of the cap structure of the drain piping of the air conditioning equipment of this embodiment will be described.

  In the cap structure of the drain piping of the air conditioning equipment of the embodiment configured as described above, each cap member 21, 21 attached to the cheese joint 20 with cap or 30 provided in the lift-up portion 12 of the drain is provided. Is integrally provided with a heat insulating layer 21b made of a foamed resin material.

  Since the heat insulating layer 21b is located inside the outer layer portion 21a made of a non-foamed resin material, the molten resin material is injected and foamed and cured at the time of injection molding. The outer layer 21a is integrated with a large number of voids formed by continuous bubbles.

For this reason, compared with the case where the waste_water | drain in the drain pipe line 20j is directly heat-transferred outside only through the said outer layer part 21a, a heat transfer amount can be reduced and heat insulation performance can be improved.

  Therefore, even if low temperature drainage flows down in the drain pipe line 20j, together with the straight pipe member 13 with a heat insulating layer, the straight pipe member 15 with a heat insulating layer, etc., on the outer surface of the cheese joint 20 with cap or 30 However, no condensation occurs.

  In addition, since there is no need to wrap a heat insulating material or the like separately around the outer surface of the drain water distribution pipe as a separate member, a place where the drain piping such as the ceiling space 6 in the building 5 or the underfloor space is routed The space efficiency at is good.

  In particular, since the outer surface of these capped cheese joints 20 or 30 has irregularities, it is difficult to wind a heat insulating material or the like with a separate member.

  For this reason, at the time of maintenance, the screw member 21 with the heat insulation layer is unscrewed and removed, and after cleaning and cleaning the drain pipe line 20j, the cap member 21 with the heat insulation layer is again attached to the female screw portion 20e. Even if it is screwed and mounted, there is no need to mount another heat insulating material by winding or the like.

  Accordingly, there is provided a cap structure for a drain pipe of an air conditioner that is excellent in maintenance workability, is surely prevented from dew condensation due to poor construction, and has good space efficiency.

  FIG. 6 shows a cap structure of the drain pipe of the air conditioning equipment of Example 1 of the embodiment of the invention.

  First, in the cap member 31 of the first embodiment, a heat insulating layer 31b made of a foamed resin material is provided in a substantially cylindrical shape inside an outer layer portion 31a mainly made of a non-foamed resin material. It has been.

The cap member 31 with a heat insulating layer includes a male screw portion 31c that is screwed into the female screw portion 30e , a disk-like flange portion 31d that presses the lower surface side to the upper end portion of the opening portion 30d, and the flange. It is mainly configured by integrally including a grip portion 31e that protrudes upward from the center portion of the portion 31d.

  The lower end portion of the male screw portion 31c extends to the vicinity of the intersection 30h of the central axes 30g, 30g of the pair of receiving portions 30a, 30a of the cheese joint 30 with cap, and is bent in a substantially L shape. A concave portion 31f that is curved and recessed is formed in the inner surface facing the formed drain pipe 30j along the pipe extending direction in the drain pipe 30j.

  Next, the effect of the cap structure of the drain piping of the air conditioning equipment of the first embodiment will be described.

  In the cap structure of the drain pipe of the air conditioning equipment of Example 1 configured as described above, the curved shape of the inner surface of the concave portion 31f formed in the cap member 31 with the heat insulating layer as shown in FIG. It is formed along a substantially L-shaped bending direction that is an extension of the pipeline in the drain pipeline 30j.

  For this reason, in the drain pipe line 30j, there is little resistance in the drain pipe line of drained water along the pipe extending direction bent in a substantially L shape, and the drainage can be performed smoothly. I can do it.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment, and thus description thereof is omitted.

  FIG. 7 shows a drain piping cap structure of the air conditioning equipment of Example 2 of the embodiment of the present invention.

  First, the configuration of the cap member 41 according to the second embodiment will be described. The cap member 41 with a heat insulating layer as the cap member mainly includes a foamed resin material inside an outer layer portion 41a composed of a non-foamed resin material. The heat insulation layer 41b comprised of is provided with a substantially cylindrical shape.

Further, the heat insulating layer cap member 41, the out of the lower end portion of the male screw portion 41c which is screwed into the female threaded portion 20e, the inner surface facing the drain pipe 20j is a tube in the drain line 20j A recessed recess 41f is formed along the road extending direction.

  Furthermore, in this Example 2, the mark part 41h which shows the rotation angle position of the holding part 41e is convexly formed in the outer surface part of the flange part 41d of the cap member 41 with the heat insulation layer.

  In the second embodiment, the concave direction of the recess 41f formed in the inner surface facing the drain pipe line 20j coincides with the curved direction of the pipe line in the drain pipe line 21j, so that the water flow direction is reduced. The rotation angle position of the mark portion 41h is set so as to be along the pipe extending direction of the cap member 41 with the heat insulating layer at a position where the resistance is minimized.

  Next, the effect of the cap structure of the drain piping of the air conditioning equipment of Example 2 will be described.

  In the cap structure of the drain pipe of the air conditioning equipment of Example 2 configured as described above, the male thread portion 41c of the cap member 41 with the heat insulating layer is replaced with the female thread formed in the opening portion 20d of the cheese joint 20 with cap. When screwing into the portion 20e, the mark portion 41h is stopped at a rotation angle that is positioned so as to follow the pipe line extending direction of the cap member 41 with the heat insulating layer.

Then, as shown in FIG. 7, the curved direction of the recessed part 41f formed in the inner surface facing the drain pipe line 20j coincides with the curved direction of the pipe line in the drain pipe line 20j . It is installed at a position where the resistance to the direction is minimized.

  For this reason, drainage can be performed smoothly in the drain pipe line 40j.

  Other configurations and functions and effects are substantially the same as those of the above-described embodiment and Example 1, and thus description thereof is omitted.

  FIG. 8 shows the cap structure of the drain pipe of the air conditioning equipment of Example 3 of the embodiment of the present invention.

First, focusing on the differences from the above-described embodiment, the configuration of Example 3 will be described. In Example 3, a piping configuration in which no lift-up unit is provided in the vicinity of the air conditioning unit 7 is employed. The straight pipe member 15 with a heat insulating layer constituting the drain pipe 8 is connected to the outer side surface 7a of the air conditioning unit 7 through the unit connecting member 9 in a substantially horizontal manner.

  Between the unit connection member 9 and the straight pipe member 15 with a heat insulating layer, the cheese joint 20 with a cap is interposed.

  The cheese joint 20 with a cap is provided with an opening 20d for maintenance that opens upward.

  A female threaded portion 20e is formed in a spiral shape on the inner wall surface portion of the opening 20d, and a cap member 21 with a heat insulating layer as the cap member is provided so as to be openable and closable. Yes.

  And the said straight pipe member 15 with a heat insulation layer is extended in a horizontal direction by the other straight pipe member 15 with a heat insulation layer extended in the orthogonal direction via the cheese joints 16 and 16, and the other end. The part 15b is provided with an oblique water stop member 50 that is screwed so that the cap member 21 can be attached and detached, and the water is stopped.

The oblique pipe portion 50a of the oblique water blocking member 50 is formed so as to bend the central axis upward at an angle of 45 degrees from the horizontal direction.

Then, the end portion side of the oblique tube section 50a, the male screw portion 21c of the caps member 21 shown in FIG. 1, similar to the female screw portion 20e to be screwed, the female screw portion (not shown) Is formed.

  Next, the effect of the cap structure of the drain pipe of Example 3 of this embodiment will be described.

  In the drain pipe cap structure of Example 3 configured in this way, in addition to the operational effects of the embodiment and Examples 1 and 2, in addition to the straight pipe member 15 with a heat insulating layer constituting the horizontal pipe, The diagonal water stop member 50 provided at the end 15b closes the other end 15b of the horizontal pipe and stops the water.

  Since the heat insulating layer 21b shown in FIG. 1 is provided in the cap member 21 as in the above embodiment, the drainage in the straight pipe member 15 with the heat insulating layer constituting the horizontal pipe is low in temperature. Even so, there is no possibility that condensation occurs on the outer surface of the cap member 21.

Further, by releasing and removing the screwing of the cap member 21, from the horizontal direction of the oblique water blocking member 50, through the oblique pipe portion 50a having an angle of 45 degrees and bending the central axis upward. Maintenance can be performed without fear of dropping water.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment and Examples 1 and 2, and thus description thereof is omitted.

Modification 1

  Fig.9 (a) shows the cap structure of the drain piping of the air conditioner of embodiment of this invention.

  First, the configuration of the cap member 51 according to the first modification will be described. A rectangular knob 52 is integrally projected on the upper surface of the cap member 51 provided with the heat insulating layer made of the foamed resin material. It is formed and is configured to be able to be screwed and unscrewed by being rotated by a tool such as a spanner.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment and Examples 1 to 3, and thus description thereof is omitted.

Modification 2

  FIG.9 (b) shows the cap structure of the drain piping of the air-conditioning equipment of this Embodiment.

  First, the configuration of the cap member 61 according to the second modification will be described. The hexagonal column-shaped wrench holding portion 62 is integrally formed on the upper surface portion of the cap member 61 provided with the heat insulating layer made of the foamed resin material. It is projectingly formed and is configured to be able to be screwed and unscrewed by being rotated by a tool such as a hexagon wrench.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment and Examples 1 to 3, and thus description thereof is omitted.

Modification 3

  FIG.9 (c) shows the cap structure of the drain piping of the air conditioner of embodiment of this invention.

  First, the configuration of the cap member 71 of the third modification will be described. A gripping portion 72 is integrally formed on the upper surface portion of the cap member 71 provided with a heat insulating layer made of the foamed resin material. Thus, the operator can grasp and release the grip 72 and can be screwed and unscrewed.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment and Examples 1 to 3, and thus description thereof is omitted.

Modification 4

  FIG. 9 (d) shows the cap structure of the drain piping of the air conditioning equipment according to the embodiment of the present invention.

  First, the configuration of the cap member 81 of the modified example 4 will be described. On the upper surface of the cap member 81 provided with the heat insulating layer made of the foamed resin material, a cross receiving portion 82 is integrally formed to project. In addition, a tool such as a cross wrench is configured to be able to be screwed and unscrewed by rotating in accordance with each groove of the cross receiving portion 82.

  Other configurations and operational effects are substantially the same as those of the above-described embodiment and Examples 1 to 3, and thus description thereof is omitted.

  The embodiments of the present invention and Examples 1 to 3 have been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, Examples 1 and 2, and the present invention is not limited thereto. Design changes that do not depart from the gist are included in the present invention.

  That is, in the said embodiment, it provides in the cheese joint 20 with a cap provided in the lift-up part 12 immediately after draining from the air-conditioning unit 7, and the lift-up part immediately after the derivation | leading-out part to other space arrange | positioned adjacently. Although it has shown and demonstrated what attaches each cap member 21 and 31 with a heat insulation layer, etc. to the cheese joint 30 with a cap which was made, it is not restricted to this in particular, For example, other parts of drain pipe line 8, etc., What is necessary is just to have a cap member 21 that extends from the air conditioning unit 7 provided in the building 5 and opens and closes the maintenance opening provided in the drain pipe 8 through which the drainage is inserted. The shape and material are not particularly limited.

  In the above-described embodiment, Examples 1 and 2, the air-conditioning unit has been described as being used for an air-conditioning unit in a building. However, the present invention is not limited to this example. There are no particular restrictions on the shape, quantity, and air-conditioning system of any kind such as similar units and units used in other air-conditioning equipment.

  Furthermore, in the said embodiment and Example 1 and 2, the said cheese joints 20 and 30 with a cap are comprised by the foamed resin material inside the non-foamed resin material which comprises cylindrical outer wall surface part 20b, 30b. The heat insulating layers 20c and 30c are provided, and the cap member 21 with a heat insulating layer used for these is mainly a heat insulating layer made of a foamed resin material inside an outer layer portion 21a made of a non-foamed resin material. Although 21b is mainly provided and provided so that it may exhibit a substantially cylindrical shape, it is not restricted to this especially, For example, the cheese joint with a cap comprised only with a foamed resin material, or a cap member with a heat insulation layer However, as long as it has a heat insulating layer made of a foamed resin material, the shape, the number of layers, the material and the amount of foaming are not particularly limited.

It is a partial sectional view explaining the composition of the principal part of a cheese joint with a cap by the cap structure of the drain piping of the air-conditioning equipment of the best embodiment of this invention. It is a side view which shows an example of the drain pipe line connected to an air conditioning unit with the cap structure of the drain piping of the air conditioning equipment of embodiment. It is the cap structure of the drain piping of the air-conditioning equipment of embodiment, and is a partial cross section perspective view of the ceiling back space in the building explaining the whole structure. It is a side view explaining the lift up part in the piping space arrange | positioned adjacent to the ceiling back space in a building with the cap structure of the drain piping of the air conditioning equipment of embodiment. It is a cap section of the drain piping of the air-conditioning equipment of an embodiment, and is a partial sectional view explaining the composition of the principal part of a cheese joint with a cap. BRIEF DESCRIPTION OF THE DRAWINGS It is a partial cross section figure of the cheese joint with a cap explaining the structure of the principal part by the cap structure of the drain piping of the air-conditioning equipment of Example 1 of embodiment. It is the cap structure of the drain piping of the air-conditioning equipment of Example 2 of embodiment, and is a partial longitudinal cross-sectional view of the cheese joint with a cap explaining the structure of the principal part. It is a cap section of the drain piping of the air-conditioning equipment of Example 3 of an embodiment, and is a partial section perspective view of the ceiling back space in a building explaining the whole composition. The cap structure of the drain piping of the air-conditioning equipment of embodiment is shown, (a)-(d) is a top view showing each modification which looked at the cap member from upper direction. It is sectional drawing of the elbow pipe explaining the structure of a heat insulation layer by drain piping of a prior art example. FIG. 11 is an end view at a position along the line XX in FIG. 10 in the drain pipe of the conventional example.

Explanation of symbols

5 Building 7 Air Conditioning Unit 8 Drain Pipeline 12 Lift-up Part 20, 30 Cheese Joint with Cap 20d, 30d Opening 20j, 30j Drain Line 21, 31, 41 Cap Member with Insulating Layer 21a Outer Part 21b Insulating Layer 31f, 41f Recess 50 Diagonal water blocking member

Claims (2)

An air conditioning unit having an opening for maintenance in a drain pipe line extending from an air conditioning unit provided in a building and through which drainage is inserted, and having a cap member that can be freely opened and closed. In the cap structure of equipment drain piping,
The cap member has a heat insulating layer composed of a foamed resin material ,
A cap structure for a drain pipe of an air conditioner , wherein a concave portion that is recessed along a pipe extending direction in the drain pipe is formed on an inner side surface of the drain pipe of the cap member.   The cap member has an outer layer portion made of a non-foamed resin material, and a heat insulating layer made of a foamed resin material located inside the outer layer portion. Item 2. A cap structure for a drain pipe of an air conditioner according to item 1.