JP2003207172A - Fixing support device for vertical piping for air conditioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost of a fixing support device while preventing its buckling deformation or breakage caused by descent of vertical piping by self-weight. <P>SOLUTION: This fixing support device includes a support cylinder 1 and a clamp fitting. The cylinder 1 is fixed at a portion to fix and support vertical piping P for air conditioning that is placed vertically. The clamp fitting has a clamp portion 2 that can be clamped and fixed on an outer circumference of the cylinder 1 and an attaching portion that attaches the cylinder 1 to a fixing portion of a location of piping application through the clamp portion 2. An engaging hole 4 is formed on at least the clamp portion 2 of the clamp fitting so that relative movement in the direction of a piping shaft center X is prevented by engaging the hole 4 with a projection 1a formed on the cylinder 1 from the direction of the diameter of the piping. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning pipe such as a refrigerant pipe arranged from an outdoor unit for air conditioning installed on the roof of a building to a plurality of indoor units for air conditioning installed on each floor. The present invention relates to a fixing support device for an air-conditioning vertical pipe, which is used when a predetermined portion of the vertical pipe arranged vertically along a wall surface or the like of a building is fixedly supported by a bracket or the like on the body side.

[0002]

2. Description of the Related Art In a conventional air-conditioning vertical pipe fixing / supporting device, the air-conditioning vertical pipes can be externally fitted and mounted at positions corresponding to the vertical air-conditioning vertical pipes fixedly supported and brazed. The support cylinder fixed to the vertical pipe by the welding means, and the clamp portion at both end portions of the clamp portion having a substantially C-shaped cross section that can be clamped and fixed to the outer peripheral surface of the support cylinder in the outer jacket state. It is composed of a clamp metal fitting formed by connecting a mounting plate portion for mounting the support cylinder body to a fixed portion of a pipe construction site via the above, and at the upper and lower two places of the support cylinder body, a jacket is attached thereto. By contacting the upper and lower end surfaces of the clamp part,
An annular projection for preventing relative movement of the support cylinder and the clamp fitting in the vertical direction is formed so as to bulge outward in the pipe radial direction (see, for example, Japanese Patent Laid-Open No. 9-329273).

[0003]

In the conventional fixing and supporting device for a vertical pipe for air conditioning, for example, a portion corresponding to the fixing and supporting of the vertical pipe is tightened and fixed by a clamp portion of a clamp metal fitting via a heat insulating material surrounding the vertical pipe. In this case, the vertical pipe and the horizontal pipe do not have their own weight drop due to the decrease in the tightening force between the vertical pipe and the heat insulating material due to the thermal contraction or thermal expansion of the vertical pipe. While it is possible to prevent buckling deformation and breakage at the bending connection point of the, the relative movement in the vertical direction of the clamp part of the clamp metal fitting is made at the upper and lower two places of the support cylinder that is externally fitted and fixed to the vertical pipe. Since it is necessary to bulge out the annular protrusion for preventing contact, the manufacturing cost has risen.

In order to strengthen the function of preventing the vertical weight from falling due to the contact between the annular projection of the support cylinder and the clamp portion of the clamp fitting, the cross-section of the clamp fitting is substantially C-shaped. It is necessary to increase the rigidity of the clamp part and the mounting plate part that is integrally formed on both ends of the clamp part by increasing the plate thickness, etc. Since a large amount of labor is required for the operation, it becomes easy to attach the clamp fitting to the supporting cylinder fixed to the vertical pipe.

The present invention has been made in view of the above situation, and its main problem is to prevent buckling deformation and damage due to the drop of the vertical pipe by its own weight, and at the same time, reduce the manufacturing cost. The point is to provide a fixed support device for vertical pipes for air conditioning that can achieve the above.

[0006]

According to a first aspect of the present invention, there is provided a characteristic structure of a vertical air-conditioning vertical pipe fixing / supporting device, wherein a vertical air-conditioning vertical pipe fixing / supporting position is externally fitted. From a fixed support cylinder, and a clamp fitting having a clamp portion that can be fixed by tightening on the outer peripheral surface of the support cylinder, and a mounting portion that attaches the support cylinder to the fixed portion of the pipe installation location via the clamp portion. An engaging hole configured to prevent the relative movement in the axial direction of the tube by engaging at least the clamp portion of the clamp metal fitting with a projection formed on the support cylinder in the radial direction of the tube. Is formed.

According to the above-mentioned characteristic structure, after the support cylinder is fixed to the portion corresponding to the fixed support of the air-conditioning vertical pipe in an externally fitted state, the clamp of the clamp metal fitting is clamped to the projection formed on the support cylinder. Engage the engagement holes formed in the pipe part from the pipe radial direction, and in this engaged state clamp the clamp part of the clamp metal fitting to the outer peripheral surface of the support cylinder and fix the clamp metal fitting attachment part to the pipe installation point. By attaching the vertical pipe to the fixed portion, the drop of the vertical pipe due to its own weight can be reliably prevented by the engagement between the protrusion of the support cylinder and the periphery of the engaging hole of the clamp portion.

Therefore, while preventing the buckling deformation and damage due to the drop of the vertical pipe due to its own weight, the annular projection and the engaging hole are only formed at the portions where the support cylinder and the clamp portion face each other. Therefore, the manufacturing cost can be reduced.

According to a second aspect of the present invention, there is provided a characteristic structure of a fixing and supporting device for an air-conditioning vertical pipe, wherein the clamp metal fitting is attached to one end of a semi-circular arc-shaped divided clamp portion which constitutes the clamp portion. A pair of divided clamp members formed by continuously integrally forming plate portions, and a bendable connecting member that fixedly connects the divided clamp portions of both divided clamp members to the expanded diameter side and the reduced diameter side in an operable state. It is composed of

According to the above characteristic structure, the rigidity of the pair of divided clamp members constituting the clamp fitting is increased by increasing the plate thickness or the like, so that the protrusion of the support cylinder and the peripheral edge of the engaging hole of the clamp portion are engaged. While strengthening the function of preventing vertical gravity from falling due to the vertical piping, the flexible clamp connecting the split clamp parts of both split clamp members allows the split clamp parts of both split clamp members to expand and contract. It can be easily operated to the side, and the work of attaching the clamp fitting to the support cylinder fixed to the vertical pipe can be efficiently performed.

According to a third aspect of the present invention, there is provided a characteristic structure of a fixing and supporting device for a vertical pipe for air conditioning, wherein the clamp fitting is attached to one end of a semi-circular divided clamp part which constitutes the clamp part. It is composed of a pair of divided clamp members that are integrally formed with a plate portion continuously, and the other end portion of the divided clamp portions of both divided clamp members is operated to expand and contract both sides. The point is that an engagement connecting portion is formed that is detachably engaged and connected in a possible state.

According to the above characteristic structure, the rigidity of the pair of divided clamp members constituting the clamp fitting is increased by increasing the plate thickness or the like, so that the protrusion of the support cylinder and the peripheral edge of the engaging hole of the clamp portion are engaged. While strengthening the self-weight drop prevention function of the vertical piping by the, the engaging connecting portion formed at the other end of the split clamp portions of both split clamp members allows the split clamp portions of both split clamp members to expand on the diameter expansion side and Since it is possible to detachably engage and connect to the reduced diameter side in an operable state, it is possible to efficiently attach the clamp fitting to the support cylinder fixed to the vertical pipe.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIGS.
The wall surface of the building among the air conditioning pipes P such as the metal (copper) refrigerant pipes arranged from the air conditioning outdoor unit installed on the roof of the building to the plurality of air conditioning indoor units installed on each floor A fixed supporting device used for fixedly supporting a predetermined portion of the vertical pipe P arranged in the up-and-down direction along the vertical direction on a mounting frame (an example of a fixed portion) F using grooved steel provided on the body side. The metal (copper) support that can be externally fitted to the fixed support corresponding to the vertical pipe P from the axial direction of the pipe and fixed to the fixed support corresponding to the vertical pipe P by welding means such as brazing. A clamp including a tubular body 1, a clamp portion 2 which can be fixed to the outer peripheral surface of the support tubular body 1 by tightening, and an attaching portion 3 which attaches the support tubular body 1 to an attachment frame F at a pipe installation location via the clamp portion 2. It consists of metal fittings and At least the clamping portion of the lamp fitting 2
Is a slit-shaped engagement hole that prevents relative movement in the pipe axis X direction by engaging the annular protrusion 1a formed at the upper and lower central positions of the support cylinder 1 from the outside in the pipe radial direction. 4 are formed.

The support cylinder 1 is composed of a plurality of types having an inner diameter corresponding to the type of the outer diameter of the vertical pipe P, and the central portion of each support cylinder 1 in the direction of the tube axis X. After bulging outward in the pipe radial direction, it is crushed from the pipe axis X direction to integrally form an annular projection 1a projecting outward in the pipe radial direction in a flange shape.

The clamp metal fittings are provided on the first type clamp metal fitting A attached to the support cylinder 1 fixed to the vertical pipe P on the small diameter side and the support cylinder 1 fixed to the vertical pipe P on the large diameter side. The clamp part 2 of the first type clamp metal A and the clamp part 2 of the second type clamp metal B are the outer diameter of the support cylinder 1 on the small diameter side and the large diameter side. It is composed of a plurality of types having an inner diameter corresponding to the type.

The first type clamp metal fitting A has a pair of mounting plate portions 3A, which form a mounting portion 3, on both ends in the circumferential direction of the clamp portion 2 having a substantially C-shaped cross section.
3B is formed continuously and integrally.

Further, on both mounting plate portions 3A and 3B of the first type clamp metal fitting A, one of the brackets 7, which are substantially U-shaped in a plan view, are fixed to the mounting frame F by fixing connecting means such as bolts 6. A bolt insertion hole 3a for fixedly connecting to the flange portion 7A via fastening means such as a bolt 8 and a nut 9 is formed so as to penetrate therethrough, and one mounting plate portion 3A has a bolt insertion hole 3a. A nut 9 is fixed in a communicating state, and further, a slit-shaped engagement hole 4 is formed over the entire area in the circumferential direction of the clamp portion 2 and a part of the attachment plate portions 3A and 3B continuous with the clamp portion 2.

Then, when both the mounting plate portions 3A and 3B of the first type clamp metal fitting A are fixedly connected to one flange portion 7A of the bracket 7 by fastening means such as bolts 8 and nuts 9, the fastening means tightens them. Along with the operation, the clamp portion 2 is deformed toward the diameter reducing side against its elastic restoring force, and the clamp portion 2 is tightly fixed to the outer peripheral surface of the support cylinder 1 in a close contact state.

In this tightened and fixed state, the engagement is formed over the annular projection 1a of the support cylinder 1 over the clamp portion 2 of the first type clamp metal fitting A and both of the mounting plate portions 3A, 3B. Since the fitting hole 4 is engaged from the outer side in the pipe radial direction, the self-weight of the vertical pipe P is reduced by the annular projection 1a of the support cylinder 1.
And the peripheral edge of the engagement hole 4 of the first type clamp fitting A can be reliably prevented.

The second type clamp metal fitting B has a pair of mounting plate portions 3A, 3B forming a mounting portion 3 at one end in the circumferential direction of the semicircular divided clamp portions 2A, 2B forming the clamping portion 2. And a pair of divided clamp members B1 and B2 formed by continuously forming
It is composed of a flexible thin metal plate connecting member B3 for fixing and connecting the two divided clamp portions 2A and 2B to each other in an operable state on the diameter expansion side and the diameter reduction side by a fixing means such as spot welding. .

Further, on both mounting plate portions 3A and 3B of the second type clamp fitting B, the other flange portion 7 of the bracket 7 is attached.
A bolt insertion hole 3a for fixedly connecting to B through fastening means such as a bolt 8 and a nut 9 is formed so as to penetrate therethrough, and one mounting plate portion 3A communicates with the bolt insertion hole 3a. In this state, the nut 9 is fixed, and further, the entire circumferential direction of the clamp part 2 and the mounting plate part 3 continuous with it
A slit-shaped engagement hole 4 is formed over a part of A and 3B.

When both mounting plate portions 3A and 3B of the second type clamp metal fitting B are fixedly connected to the other flange portion 7B of the bracket 7 by fastening means such as bolts 8 and nuts 9, they are fastened by the fastening means. Along with the operation, the clamp portion 2 is deformed toward the diameter reducing side against its elastic restoring force, and the clamp portion 2 is tightly fixed to the outer peripheral surface of the support cylinder 1 in a close contact state.

In this tightened and fixed state, the engagement is formed over the annular projection 1a of the support cylinder 1 over the clamp portion 2 of the second type clamp metal fitting B and both mounting plate portions 3A, 3B. Since the fitting hole 4 is engaged from the outer side in the pipe radial direction, the self-weight of the vertical pipe P is reduced by the annular projection 1a of the support cylinder 1.
With the engagement with the peripheral edge of the engagement hole 4 of the second type clamp fitting B, it can be reliably prevented.

Further, the rigidity of the pair of divided clamp members B1 and B2 constituting the second type clamp fitting B is increased by increasing the plate thickness or the like, so that the annular projection 1a of the support cylinder 1 is formed.
And the peripheral edge of the engaging hole 4 of the clamp portion 2 by the vertical pipe P
While enhancing the self-weight fall prevention function of the split clamp members B1 and B2, the split clamp portions 2A and 2B of the split clamp members B1 and B2 are fixed by the bendable connecting member B3. , 2B can be easily operated on the diameter expansion side and the diameter reduction side.
Second type clamp fitting B for the support cylinder 1 fixed to the
Can be installed efficiently.

Both flange portions 7A, 7 of the bracket 7
B is formed with a long hole-shaped bolt insertion hole 7a for fixedly connecting the first type clamp metal fitting A and the second type clamp metal fitting B so that the mounting position can be changed in the vertical direction within a predetermined range.

A load receiving portion 7D that abuts against the attachment frame F from above from the connecting portion 7C of the bracket 7.
Are integrally formed by bending.

[Second Embodiment] In the fixed support device for an air-conditioning vertical pipe shown in FIGS. 7 to 10, the clamp fitting is attached to a support cylinder 1 fixed to the small-diameter vertical pipe P. It is composed of a seed clamp metal fitting A and a third type clamp metal fitting C mounted on the support cylinder 1 fixed to the vertical pipe P on the large diameter side.

The third type clamp metal fitting C has a pair of mounting plate portions 3A, 3 forming the mounting portion 3 at one end of the semicircular arc-shaped divided clamp portions 2A, 2B forming the clamp portion 2.
B is composed of a pair of divided clamp members C1 and C2 that are continuously formed integrally with each other, and the divided clamp members 2A and 2B of the divided clamp members C1 and C2 have the other ends 2A and 2A, respectively. There is provided an engagement connecting portion 10 for detachably engaging and connecting 2B in a state in which it can be operated on the diameter expansion side and the diameter reduction side, and in a state in which relative movement in the tube axis X direction is blocked.

The engagement connecting portion 10 has a pair of engagement protrusions 10a formed at the other end of one of the divided clamp portions 2A so as to project in a substantially L-shape toward the outside in the tube axis X direction. At the same time, the other end of the other split clamp portion 2B is provided with a pair of engagement receiving portions 10b that project inward in the tube axis X direction in a substantially L-shape to form a pair of engagements. After the protrusion 10a is engaged in the orthogonal posture through the slit 10c between the engagement receiving portions 10b, the split clamp portions 2A and 2B are rotated 90 degrees until the split clamp portions 2A and 2B face each other. The split clamp portions 2A and 2B of the split clamp members C1 and C2 are connected in a retaining manner in a state in which the split clamp portions 2A and 2B can be operated on the diameter expansion side and the diameter reduction side, and in which the relative movement in the tube axis X direction is abutted and prevented. can do.

Further, on both mounting plate portions 3A and 3B of the third type clamp metal fitting C, the other flange portion 7 of the bracket 7 is provided.
A bolt insertion hole 3a for fixedly connecting to B through fastening means such as a bolt 8 and a nut 9 is formed so as to penetrate therethrough, and one mounting plate portion 3A communicates with the bolt insertion hole 3a. In this state, the nut 9 is fixed, and further, the entire circumferential direction of the clamp part 2 and the mounting plate part 3 continuous with it
A slit-shaped engagement hole 4 is formed over a part of A and 3B.

Then, the rigidity of the pair of divided clamp members C1 and C2 constituting the third type clamp fitting C is increased by increasing the plate thickness, so that the annular projection 1a of the support cylinder 1 and the clamp portion 2 are engaged with each other. While strengthening the self-weight drop prevention function of the vertical pipe P due to the engagement with the peripheral edge of the hole 4, the engaging connecting portion 10 formed at the other end of the divided clamp portions 2A, 2B of the divided clamp members C1, C2. Since the divided clamp portions 2A and 2B of the divided clamp members C1 and C2 can be detachably engaged and coupled to each other in the diametrically expanded side and the diametrically reduced side, the support fixed to the vertical pipe P is supported. Cylinder 1
It is possible to efficiently perform the work of mounting the third type clamp metal fitting C on the.

The rest of the configuration is the same as the configuration described in the first embodiment, and therefore, the same components will not be provided with the first configuration.
The same numbers as in the embodiment are added and the description thereof is omitted.

[Other Embodiments] (1) In each of the above-described embodiments, after the central portion of the support cylinder 1 in the tube axis X direction is formed to bulge outward in the tube radial direction,
By crushing it in the direction of the tube axis X, the annular projection 1a that projects like a flange outwardly in the tube radial direction is integrally formed.
An annular member forming the protrusion 1a may be fixedly formed on the outer peripheral surface of the support cylinder 1. Alternatively, the protrusions 1a may be formed at a plurality of circumferential positions on the outer peripheral surface of the support cylinder 1.

(2) In the above-described second embodiment, the split clamp portions 2A and 2B of the split clamp members C1 and C2 are used.
A member for detachably engaging and connecting the other end 2A, 2B to the other end thereof in a state in which they can be operated on the diameter expansion side and the diameter reduction side, and in the state where relative movement in the tube axis X direction is prevented. Connection part 1
Although 0 is provided, the other ends of the divided clamp portions 2A and 2B of the divided clamp members C1 and C2 are pivotally connected to each other so as to be swingable about an axis parallel to or substantially parallel to the tube axis X. Is also good.

[Brief description of drawings]

FIG. 1 is a perspective view at the time of mounting showing a first embodiment of a fixed supporting device for a vertical pipe for air conditioning of the present invention.

FIG. 2 is a front view in vertical section of a portion passing through the center of both kinds of clamp fittings.

FIG. 3 is a perspective view when both kinds of clamp fittings are fixedly connected to the bracket.

FIG. 4 is a perspective view when disassembling both kinds of clamp fittings and a bracket.

FIG. 5 is a plan view when both types of clamp fittings are fixedly connected to the bracket.

FIG. 6 is a side view when both kinds of clamp fittings are fixedly connected to the bracket.

FIG. 7 is a perspective view at the time of mounting showing a second embodiment of a fixed supporting device for a vertical pipe for air conditioning of the present invention.

FIG. 8 is a perspective view of a third type clamp fitting.

FIG. 9 is a perspective view when the both-type clamp fittings and the bracket are disassembled.

FIG. 10 is a plan view when both types of clamp fittings are fixedly connected to the bracket.

[Explanation of symbols]

A clamp metal fittings (Type 1 clamp metal fittings) B Clamp bracket (Type 2 clamp bracket) B1 split crank member B2 split crank member B3 connecting member C clamp metal fittings (3rd type clamp metal fittings) C1 split crank member C2 split crank member Vertical piping for air conditioning X tube axis direction 1 Support cylinder 1a Protrusion (annular protrusion) 2 Clamp part 2A split crank 2B split crank part 3 Attachment 3A mounting plate 3B mounting plate 4 engagement holes 10 Engagement connection part

Claims (3)

[Claims] 1. A support cylinder body fixed in an externally fitted state to a position corresponding to a fixed support of a vertically arranged air-conditioning vertical pipe, a clamp portion which can be clamped and fixed to an outer peripheral surface of the support cylinder body, and And a clamp metal fitting having a mounting portion for mounting the support tubular body to the fixed portion of the pipe construction location via the clamp portion, and at least the clamp portion of the clamp metal fitting has a projection formed on the support tubular body. A support device for a vertical pipe for air conditioning, in which an engagement hole is formed to prevent relative movement in the axial direction of the pipe by engaging with the pipe radial direction. 2. A pair of split clamp members, wherein the clamp fitting is formed by continuously and integrally forming a mounting plate portion that constitutes a mounting portion at one end of a semi-circular split clamp portion that constitutes a clamp portion. 2. The fixing support device for an air-conditioning vertical pipe according to claim 1, further comprising a bendable connecting member for fixedly connecting the divided clamp portions of the divided clamp members to the expanded diameter side and the reduced diameter side in an operable state. . 3. The clamp fitting comprises a pair of split clamp members in which a mounting plate portion constituting a mounting portion is continuously and integrally formed at one end of a semi-circular split clamp portion constituting a clamp portion. In addition, the other end of the split clamp portion of both split clamp members is provided with an engagement connection portion for detachably engaging and connecting both of them in the diametrical expansion side and the diametrical reduction side in an operable state. The fixed support device for the vertical pipe for air conditioning according to claim 1.