JP2007211887A - Corrugated flexible pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain the high workability of a piping arrangement and an excellent freeze prevention function of a corrugated flexible pipe and a fluid pipe by restraining the lowering of the bending performance of the corrugated flexible pipe itself even though a heater source is arranged as much as possible due to the reasonable arrangement remodeling in the corrugated flexible pipe: to make it possible to downsize in radial direction, lower the production cost and restrain also the occurrence of the collision sound effectively due to ruffling of the fluid pipe originated from the water hammer phenomenon. <P>SOLUTION: Beside a flexible synthetic resin demarcating wall part 4 for heat radiation which demarcates a passage to pass a heat generation source 3 against a passage 4 to insert the fluid pipe in a sealing condition is formed integrally along a pipe shaft center in a protruding condition to the side of pipe shaft center on the wall 1b in the pipe of the corrugated flexible synthetic resin pipe 1, the flexible support body 5 of synthetic resin which can touch with the fluid pipe 1 to be inserted into a passage S1 for the fluid pipe insertion is formed and protruded integrally on the side of a pipe shaft center to the part which is biased toward the circumference from the demarcating wall part 4 for heat radiation in a wall face 1b within the pipe. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention inserts a fluid pipe such as a sheath pipe that protects a flexible fluid pipe such as a water supply pipe or a hot water supply pipe disposed along a piping path such as a floor surface or a wall surface of a structure. The present invention relates to a corrugated flexible tube made of a bendable synthetic resin.

  In general, when a fluid pipe such as a hot water supply pipe or a heating pipe is provided in a structure such as a detached house or a high-rise house, a sheath pipe or the like serving as a protective pipe provided in advance on the floor or wall surface of the structure is used. A double piping method is employed in which a flexible fluid pipe is inserted into the corrugated flexible pipe. In the case of this double piping method, construction and maintenance inspection work can be facilitated and streamlined, but in cold regions in winter, if the fluid flow in the fluid pipe stops for a long time, There is a problem that the retained heat is gradually taken away and freezes.

Therefore, as a method for preventing freezing of the fluid in the fluid pipe inserted into the corrugated flexible pipe, the following corrugated flexible pipe structures shown in the following (A) and (B) have been proposed.
(B) A plurality of heating elements having flexibility that can be wound in a cylindrical shape along the outer wall surface of the fluid pipe between the inner wall surface of the corrugated flexible pipe and the outer wall surface of the fluid pipe inserted therethrough. At the same time, an adhesive layer is formed on the inner peripheral surface side of each heating element to be attached to the outer wall surface of the fluid pipe.

Each heating element is made thin by sandwiching two lead wires and a plate-like stainless steel element connected thereto with a synthetic resin sheet such as polyethylene formed in a strip shape having a predetermined width. It is comprised in plate shape, and it is comprised so that the lead wires of a heat generating body may be connected through the inside of a pair of connection piece which connects the edge parts of adjacent heat generating bodies integrally.
And when inserting a fluid pipe | tube in a corrugated flexible pipe | tube, it is comprised so that it may stick, winding a heat generating body around the outer wall surface of this fluid pipe | tube (refer patent document 1).

(B) A corrugated flexible tube through which a fluid tube is inserted and a flexible synthetic resin heat radiating tube through which a heater wire is inserted. It is possible to corrugate the outer wall surface of a corrugated flexible tube that is juxtaposed in contact with each other or through a fluid tube and the outer wall surface of a flexible synthetic resin radiator tube that is inserted through a heater wire. The fluid pipe insertion passage in the flexible tube and the heater wire insertion passage in the heat radiating tube are integrally formed in a state of communicating in the radial direction.

  Further, the corrugated flexible pipe and the heat radiating pipe arranged side by side are covered with a heat insulating pipe made of foamed resin, or the corrugated flexible pipe and the heat radiating pipe integrally formed in a communicating state are covered with a heat insulating pipe made of foamed resin. Cover (see Patent Document 2).

JP-A-11-67431 Utility Model Registration No. 3084455

  In the former conventional structure, when inserting the fluid pipe into the corrugated flexible pipe, it is necessary to stick the heat generating body around the outer peripheral surface of the fluid pipe, so that much time and effort are required for the winding. The arrangement efficiency of the fluid pipe was lowered.

  Furthermore, when a fluid leak occurs from the fluid pipe, the heating element is immersed in the leaking fluid in the corrugated flexible pipe, so that the heating element itself is required to have high waterproof performance, and the manufacturing cost is reduced. Invited soaring.

  In addition, as the latter conventional structure, there are a juxtaposed type and an integral type as described above. Of these, the juxtaposed type has a waveform arranged side by side so that heat radiated from the heat radiating pipe does not escape to the outside. Since it is necessary to cover the flexible tube and the heat radiating tube with a heat insulating tube made of foamed resin, the outer shape of the entire pipe is increased, and the work for covering the corrugated flexible tube and the heat radiating tube with the heat insulating tube Since a lot of labor is required, workability has been reduced.

  Furthermore, in the other integrated type, since the heat radiating tube is integrally formed in a state of protruding outward from the outer peripheral surface of the corrugated flexible tube, the corrugated flexible tube and the heat radiating tube are insulated from each other as in the side-by-side type. The corrugated flexible tube and the heat radiating tube can be handled as a single tube, so that the workability can be improved on that surface, but the heat radiating tube that projects on the outer peripheral surface of the corrugated flexible tube As a result, the bendability of the corrugated flexible tube itself is impaired.

  In addition, the fluid pipe insertion passage of the corrugated flexible pipe and the heater wire insertion passage of the heat radiating pipe are formed in communication along the tube axis direction, so that heat is generated in the heat radiating pipe when leakage occurs from the fluid pipe. As a result, the body is immersed in the leaking fluid, and as a result, a high waterproof performance is required for the heat radiating tube itself, resulting in an increase in manufacturing cost.

  The present invention has been made in view of the above-described actual situation, and the main problem thereof is that the corrugated flexible tube itself bends while a heat source is provided by rational arrangement modification within the corrugated flexible tube. As much as possible, while maintaining high piping workability and excellent anti-freezing function of corrugated flexible pipes and fluid pipes, miniaturization in the pipe diameter direction and reduction in manufacturing costs can be achieved. In addition, the present invention is to provide a corrugated flexible tube that can effectively suppress the occurrence of collision noise caused by the undulation of the fluid tube due to the water hammer phenomenon.

A first characteristic configuration according to the present invention is a corrugated flexible tube made of a bendable synthetic resin that passes through a flexible fluid tube,
On the inner wall surface of the pipe, a passage for passing a heat generation source with respect to the passage for inserting the fluid pipe is formed in a sealed state. It is integrally formed along the axial direction, and can be brought into contact with a fluid pipe inserted through a fluid pipe insertion passage at a portion that is deviated in a circumferential direction from a heat radiating partition wall on the inner wall surface of the pipe. A flexible synthetic resin support body is formed so as to project integrally on the tube axis side.

According to the above characteristic configuration, the internal space of the corrugated flexible pipe is made flexible by the flexible synthetic resin heat radiation partition wall formed integrally on the inner wall surface of the corrugated flexible pipe. Since the passage is formed by a passage for inserting the fluid pipe and a passage for passing the heat source, the fluid pipe disposed in the corrugated flexible tube is efficiently frozen by the radiant heat from the heat source. It can be heated well.
In addition, a flexible synthetic resin support that can come into contact with the fluid pipe inserted into the fluid pipe insertion passage is provided at a portion of the inner wall surface of the pipe that is biased in the circumferential direction from the heat radiating partition wall. Since the fluid pipe disposed in the corrugated flexible tube undulates due to the water hammer phenomenon, it is integrally formed on the inner wall surface of the corrugated flexible pipe. The support and the partition wall for heat dissipation are elastically deformed as they come into contact with the fluid pipe, whereby the impact force caused by the undulation of the fluid pipe can be reduced.
Further, since the partition wall portion for heat dissipation and the support do not protrude radially outward of the corrugated flexible tube, it is possible to prevent the bending property of the corrugated flexible tube itself from being lowered, as in the prior art. Compared to the case where a part of the outer wall surface of the heat radiating tube is connected to a part of the outer wall surface of the corrugated flexible tube, it is easy to reduce the size in the radial direction.

  In addition, since the heat source passage is formed in a sealed state by the heat radiating partition wall portion, even if a fluid leaks from the fluid pipe, the heat source is not immersed in the leaked fluid. The waterproof performance required for the camera can be set low.

  Therefore, while providing a heat source, the deterioration of the bending characteristics of the corrugated flexible pipe itself is suppressed as much as possible, while maintaining the high piping workability and excellent anti-freezing function of the corrugated flexible pipe and the fluid pipe, By reducing the size in the direction and reducing the manufacturing cost, and by using the partition wall portion for heat radiation for forming the heat source passage in a sealed state as a part of the cushioning material, It is possible to effectively suppress the generation of a collision sound due to the undulation of the fluid pipe caused by the water hammer phenomenon, and it is possible to advantageously manufacture a high sound deadening effect.

  According to a second characteristic configuration of the present invention, the support body is formed at a plurality of locations in the circumferential direction of the inner wall surface of the pipe, and the fluid pipe inserted into the fluid pipe insertion passage with the heat radiating partition wall portion is separated from the inner wall surface of the pipe. It is in the point comprised so that it may hold | maintain in the position spaced apart to the pipe-axis core side.

  According to the above characteristic configuration, the inserted fluid pipe can be held away from the pipe inner wall surface by the cooperation of the plurality of supports projecting from the pipe inner wall surface and the heat radiating partition wall portion. The entire outer peripheral surface can be exposed to the ambient temperature in the passage for inserting a fluid pipe heated by radiant heat from a heat source, and the freeze prevention function can be enhanced.

  The 3rd characteristic structure by this invention exists in the point from which the said partition wall part for heat radiation is comprised from the corrugated heat sink provided with the peak part and the trough part.

  According to the above-described characteristic configuration, the bending performance of the corrugated heat radiating pipe itself constituting the heat radiating partition wall portion is increased, and accordingly, the flexibility of the corrugated flexible pipe is improved. Piping workability can be further improved, and the corrugated heat radiating pipe, which is the heat radiation surface, can be efficiently heated to an ambient temperature at which the fluid pipe placed in the passage does not freeze using the outer surface of the corrugated radiator pipe. Can do.

  The 4th characteristic structure by this invention exists in the point by which the pitch of the said waveform heat radiating tube is comprised by the same pitch as a waveform flexible tube.

  According to the above characteristic configuration, when forming a part of the outer wall surface of the corrugated heat radiating pipe integrally with a part of the inner wall surface of the corrugated flexible pipe along the tube axis direction, the trough of the corrugated flexible pipe is formed. Can be joined to the corrugated flexible tube, so that the corrugated flexible tube can be efficiently and easily joined to the corrugated flexible tube. Therefore, it is possible to satisfactorily suppress the deterioration of the bendability of the corrugated flexible tube itself due to the joining of the heat radiating tubes.

[First Embodiment]
1 to 4 are examples of a synthetic resin fluid pipe having flexibility in a sheathed pipe 1 made of crosslinked polyethylene which is an example of a corrugated flexible pipe made of synthetic resin having flexibility. A double-pipe structure in which a cross-linked polyethylene water supply hot water supply pipe 2 is inserted and the sheath pipe 1 is configured as a protective pipe for the water supply hot water supply pipe 2 is shown, corresponding to the valley 1B of the pipe inner wall surface 1b of the sheath pipe 1 And in one place in the circumferential direction, a self-control type heater wire 3 which is an example of a heat generation source with respect to a first insertion path (fluid pipe insertion path) S1 for inserting the hot water supply hot water pipe 2 is provided. An example of a flexible synthetic resin heat radiating partition wall section that forms a second insertion path (heat source insertion path) S2 in a sealed state for insertion, and is inserted into the first insertion path S1. A heat radiating pipe 4 made of cross-linked polyethylene that can be elastically deformed in the radial direction by contact with the hot water supply hot water pipe 2 is provided on the tube axis X side. It is integrally formed along the tube axis X direction so as to protrude, and is located at a location corresponding to the valley 1B of the inner wall surface 1b of the sheath tube 1 and at a predetermined interval in the circumferential direction from the heat radiating tube 4. In addition, in a plurality of locations (in this embodiment, two locations deviated from the heat radiating tube 4 in the circumferential direction by 120 degrees each), the water supply hot water supply tube 2 inserted through the first insertion passage S1 can be contacted from the radial direction. An example of a support made of synthetic resin having a buffer shaft 5 made of a crosslinked polyethylene that can be elastically deformed in the radial direction by contact with the hot and cold water supply pipe 2 protrudes toward the tube axis X side. It is integrally formed along the X direction.

  The heat radiating tube 4 is composed of a corrugated heat radiating tube in which annular crests 4A and annular troughs 4B are alternately continued, and the pitch of the corrugated radiating tubes 4 is the same as the pitch of the sheath tube 1 or It is comprised substantially the same. That is, the length in the axial direction X of the annular ridge 4A and the annular valley 4B of the corrugated radiator pipe 4 is the axial direction X in the annular ridge 1A and the annular valley 1B of the sheath tube 1. And a part in the circumferential direction in the annular valley 1B of the sheath tube 1 and a part in the circumferential direction in the annular peak 4A of the corrugated heat radiating pipe 4 are fused or bonded together. Are integrally joined by the joining means.

  The corrugated heat radiating pipe 4 is configured to be thicker than the buffer pipe 5 so that the heater wire 3 is not adversely affected by elastic deformation in the radial direction accompanying the contact with the hot water supply hot water pipe 2. .

  Similarly to the corrugated heat radiating tube 4, the buffer tube 5 is composed of a corrugated buffer tube in which an annular crest 5 A and an annular trough 5 B are alternately arranged. The pitch is the same as or substantially the same as the pitch of the sheath tube 1. That is, the length in the tube axis X direction of the annular crest 5A and the annular valley 5B of the corrugated buffer tube 5 is the axial direction X in the annular crest 1A and the annular valley 1B of the sheath tube 1. And a part in the circumferential direction in the annular valley 1B of the sheath tube 1 and a part in the circumferential direction in the annular peak 5A of the corrugated buffer tube 5 are fused or bonded together. They are integrally joined by a joining means such as.

  And by the flexible synthetic resin corrugated heat radiating pipe 4 integrally formed on the pipe inner wall surface 1b of the sheath pipe 1, the inner space of the sheath pipe 1 becomes a flexible water supply hot water supply pipe 2. Since the first insertion passage S1 for insertion and the second insertion passage S2 for insertion of the heater wire 3 are partitioned, the heater wire 3 inserted into the second insertion passage S2 of the corrugated heat radiating tube 4 is formed. By using the radiant heat from the outer peripheral surface having a large surface area of the corrugated heat radiating pipe 4 serving as a heat radiating surface, the hot water supply pipe 2 disposed in the first insertion passage S1 is efficiently heated to an atmospheric temperature at which it does not freeze. can do.

  In addition, since the corrugated heat radiating tube 4 and the two corrugated buffer tubes 5 do not protrude radially outward from the outer wall surface of the sheath tube 1, it is possible to suppress a decrease in the flexibility of the sheath tube 1 itself, For example, as compared with a case where a part of the outer wall surface of the corrugated heat radiating pipe 4 is connected to a part of the outer wall surface 1a of the sheath tube 1 in a protruding state, the size in the tube diameter direction can be reduced. it can.

  Further, since the corrugated heat radiating pipe 4 and the two corrugated buffer pipes 5 are provided with the annular ridge portions 4A and 5A and the annular valley portions 4B and 5B which are configured to have the same pitch as that of the sheath tube 1, the corrugated heat radiation. Since the bending performance of the tube 4 and the double corrugated buffer tube 5 is high, and the bending performance of the sheath tube 1 is close to that of the corrugated heat radiating tube 4 and the double corrugated buffer tube 5, the corrugated heat radiating tube 4 and the double corrugated buffer tube 5 It can suppress favorably that the flexibility of sheath tube 1 itself falls due to joining of pipe 5, and can improve piping workability of sheath pipe 1, and piping workability of hot-water supply hot-water pipe 2 to this. it can.

  In addition, when part of each outer wall surface of the corrugated heat radiating tube 4 and the two corrugated buffer tubes 5 is integrally formed along the tube axis X direction on a part of the inner wall surface 1 b of the sheath tube 1, Since the annular trough portion 1B and the corrugated heat radiating tube 4 and the annular crest portions 4A and 5A of the two corrugated buffer tubes 5 can be integrally joined together, the corrugated heat radiating tube for the sheath tube 1 can be joined. 4 and the double corrugated buffer tube 5 can be joined efficiently and easily.

  Further, due to the presence of the flexible elastically deformable corrugated heat radiating pipe 4 and the two corrugated buffer pipes 5 integrally formed on the inner wall surface 1b of the sheath pipe 1 on the tube axis X side, the water hammer phenomenon is caused. When the water supply hot water supply pipe 2 disposed in the sheath pipe 1 is corrugated due to the undulation, the corrugated heat radiating pipe 4 and the two corrugated buffer pipes 5 projecting from the pipe inner wall surface 1b of the sheath pipe 1 are provided with the water supply hot water supply pipe 2 The impact force caused by the undulation of the water supply / hot water supply pipe 2 can be reduced by elastically deforming with the contact.

  In addition to the crosslinked polyethylene pipe described in the first embodiment, the fluid pipe 2 such as the water supply / hot water pipe is a composite resin pipe having flexibility such as a polyethylene pipe and a polybutene pipe, and a metal composite. The flexible metal composite synthetic resin tube which has been made can be suitably used.

  Furthermore, as the corrugated flexible tube 1 such as the sheath tube, the corrugated heat radiating tube 4 and the corrugated buffer tube 5, in addition to the cross-linked polyethylene tube described in the first embodiment, a flexible tube such as a polyethylene tube or a polybutene tube is used. A synthetic resin tube having the following can be preferably used.

  Furthermore, in the embodiment, the crests 1A and troughs 1B of the sheath tube 1 and the crests 4A and 5A and the troughs 4B and 5B of the corrugated radiator pipe 4 and corrugated buffer pipe 5 are formed in an annular shape. However, it may be configured in an elliptical ring shape, a triangular ring shape, a quadrangular ring shape, a pentagonal ring shape, or the like.

[Second Embodiment]
In the first embodiment described above, the radiating pipe 4 and the buffer pipes 5 have a waveform in which the annular ridges 4A and 5A and the annular valleys 4B and 5B, which are configured to have the same pitch as the sheath pipe 1, are alternately continued. As shown in FIG. 5, the heat radiating tube 4 is formed of a flexible tube that forms a second insertion passage (heat source insertion passage) S2 for inserting the heater wire 3 in a sealed state. A flexible pipe that is constructed from a straight pipe made of cross-linked polyethylene, which is an example of a certain synthetic resin, and that allows each of the corrugated buffer pipes 5 to come into contact with the hot water and hot water pipes 2 inserted through the first insertion passage S1 from the radial direction. You may comprise from the straight pipe | tube made from crosslinked polyethylene which is an example of a certain synthetic resin.
In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

Next, a method for manufacturing the sheath tube 1 configured as described above using a molding machine A as shown in FIGS.
In the molding machine A, the outer wall surface of the sheath tube 1 along the first circulation path R formed on one side of the molding center line passing through the center line of the die 7 and the tube axis X of the sheath tube 1 to be molded. The second circulation path formed on the other side of the forming center line while circulating and moving the plurality of first divided forming dies 6A having the semi-cylindrical tube wall forming surface 6a with respect to the outer wall surface of the upper half side tube at 1a A plurality of second divided molds 6B having a semi-cylindrical tube wall forming surface 6b with respect to the lower half outer wall surface of the outer tube wall surface 1a of the sheath tube 1 are circulated along L.

  Further, of the circulation paths R and L, each return path portion at the start end of the molding path portion corresponding to the annular first, second and third extrusion ports 9, 11 and 13 formed in the die 7. The pair of first and second split molds 6A and 6B that move back along the line are joined together, and both split molds 6A and 6B are moved toward the end of the molding path portion while being joined. It is configured to let you.

  The die 7 of the molding machine A has an annular first extrusion port 9 for continuously extruding the heat-softened first parison 8 for molding the sheath tube 1, and a radial direction from the first extrusion port 9. An annular second extrusion port 11 for continuously extruding the heat-softened second parison 10 for forming the heat radiating tube 4 at the inward position, and a plurality of predetermined intervals in the circumferential direction from the second extrusion port 11 An annular third portion that continuously extrudes the heat-softened third parison 12 for forming the buffer tube 5 at the locations (in the present embodiment, two locations that are offset from the second extrusion port 11 by 120 degrees in the circumferential direction). Pressure air for maintaining each of the extrusion port 13 and the second softened second parison 9 and the third parison 12 continuously extruded from the second extrusion port 10 and the third extrusion port 13 in a cylindrical shape by a blow pressure. An air outlet 14 for jetting is formed That.

  Further, the die 7 of the molding machine A has a tube wall molding surface 15a for molding the outer wall surface of the heat-softened cylindrical second parison 10 continuously extruded from the second extrusion port 11, and a third one. A molding guide comprising a tube wall molding surface 15b for molding the outer wall surface of the cylindrical third parison 12 which is continuously soft extruded from the extrusion port 13 and at least the surface thereof is coated with a fluororesin. A mold 15 is attached to the first and second split molds 6A and 6B. A thermally softened cylindrical first parison 8 that is continuously extruded from the first extrusion port 9 is formed into both split molds. A large number of suction holes 16 connected to the vacuum pump P are formed so as to suck and adhere to the tube wall molding surfaces 6a and 6b of 6A and 6B.

  Among the circulation paths R and L, the first and second molding paths corresponding to the annular first, second and third extrusion ports 9, 11 and 13 formed in the die 7 of the molding machine A While the second divided molds 6A and 6B are joined and moved, the thermally softened cylindrical first parison 8 that is continuously extruded from the first extrusion port 9 of the molding machine A is divided into the two divided molds 6A and 6A. The negative pressure due to the suction action of the numerous suction holes 16 formed in 6B is adsorbed and held on the tube wall molding surfaces 6a and 6b of the two split molds 6A and 6B, and the inside of the first extrusion port 9 in the radial direction. A part of each outer wall surface of the second parison 10 and both third parisons 12 continuously extruded from the second extrusion port 11 and both third extrusion ports 13 formed in the direction is used as the inner wall surface of the first parison 7. Part of the tube in a fused or fused state along the tube axis X direction At the same time, the outer wall surfaces of the second parison 10 and the third parison 12 are pressed against the tube wall molding surfaces 15 a and 15 b of the molding guide die 15 by the blow pressure of the pressurized air ejected from the air ejection port 14. A flexible heat radiating tube 4 and a buffer tube 5 having a buffering function are provided to partition and form a second insertion passage S2 for passing the heater wire 3 with respect to the first insertion passage S1 in the sheath tube 1 in a sealed state. A corrugated flexible tube formed integrally with the tube inner wall surface 1b is formed.

[Third Embodiment]
In the first embodiment or the second embodiment described above, a flexible synthetic resin heat radiating tube 4 is provided along the tube axis X direction at a location corresponding to the valley 1B of the tube inner wall surface 1b of the sheath tube 1. Although formed integrally, the second insertion passage S2 for inserting the heater wire 3 into the first insertion passage S1 for inserting the water supply and hot water supply pipe 2 is formed in a sealed state, as shown in FIG. As described above, the second insertion passage S2 for inserting the heater wire 3 with respect to the first insertion passage S1 for inserting the water supply and hot water supply pipe 2 into the peak portion 1A and the valley portion 1B of the inner wall surface 1b of the sheath tube 1. Alternatively, a thin plate-shaped heat-dissipating partition wall 4 made of a synthetic resin may be integrally formed along the tube axis X direction.

Moreover, it is the peak part 1A and valley | Tani part 1B in the pipe inner wall surface 1b of the said sheath pipe 1, and several places (in this embodiment, the heat dissipation partition wall part 4 in the circumferential direction) from the partition wall part 4 for heat dissipation. 2 places that are biased at equal intervals in the circumferential direction) is an example of a flexible synthetic resin support that can come into contact with the hot and cold water supply pipe 2 inserted through the first insertion passage S1 in the radial direction. A thin plate-like buffer support 5 made of cross-linked polyethylene that can be elastically deformed is integrally formed along the tube axis X direction so as to protrude toward the tube axis X side.
In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Fourth Embodiment]
FIG. 11 shows another embodiment, and the heater wire 3 is inserted into the first insertion passage S1 for inserting the hot water supply hot water supply pipe 2 into the peak portion 1A and the valley portion 1B of the inner wall surface 1b of the sheath tube 1. A flexible synthetic resin-made semicircular or arc-shaped heat-radiating partition wall portion 4 that partitions the second insertion passage S2 for sealing in a sealed state, and integrally molded along the tube axis X direction; Plural portions 1A and valleys 1B on the inner wall surface 1b of the sheath tube 1 and a plurality of locations spaced in the circumferential direction from the heat radiating partition wall portion 4 (in this embodiment, from the heat radiating partition wall portion 4 The three locations that are biased at equal intervals in the direction) are an example of a flexible synthetic resin support that can be brought into contact with the hot and cold water supply pipe 2 inserted through the first insertion passage S1 in the radial direction. Cantilevered buffer piece that curves in the direction of reverse warping with the inner wall surface of the sheath tube 1 when viewed in the axial direction. There is integrally formed along the tube axis X direction while protruding pipe axis X side.
In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) In each of the above-described embodiments, the sheath tube 1 that is a corrugated flexible tube is formed into a cylindrical body. However, the sheath tube 1 may be formed into an elliptical cylindrical body, a rectangular cylindrical body, a triangular cylindrical body, or the like. Good.
(2) In each of the above-described embodiments, the self-control type heater wire 3 is used as a heat generation source. However, instead of this, warm water, a heat transport medium, or the like may be circulated and flowed.
(3) In each of the above-described embodiments, the flexible support body 5 that can be elastically deformed by contact with the fluid pipe 2 inserted through the first passage (fluid pipe insertion passage) S1 is used as the pipe inner wall surface 1b. The heat-dissipating partition wall 4 is formed in two or three locations deviated in the circumferential direction, but may be formed in one location or four or more locations, and the support 5 is composed of a large number of elastic protrusion groups. May be.

The longitudinal cross-sectional view of the corrugated flexible tube which shows 1st Embodiment of this invention II-II sectional view of FIG. III-III sectional view of FIG. IV-IV sectional view of FIG. The longitudinal cross-sectional view of the corrugated flexible tube which shows 2nd Embodiment of this invention Explanatory drawing which shows the shaping | molding manufacturing method of the corrugated flexible tube of 2nd Embodiment. Enlarged cross-sectional side view of a forming machine die Sectional view taken along line IIX-IIX in FIG. IX-IX line sectional view of FIG. Cross-sectional view of a corrugated flexible tube showing a third embodiment of the present invention Cross-sectional view of a corrugated flexible tube showing a fourth embodiment of the present invention

Explanation of symbols

S1 Fluid pipe insertion passage (first insertion passage)
S2 Heat source passage (second insertion passage)
X tube axis 1 corrugated flexible tube (sheath tube)
1A Mountain part 1B Valley part 1a Pipe outer wall surface 1b Pipe inner wall surface 2 Fluid pipe (water supply hot water pipe)
3 Heat source (heater wire)
4 division wall for heating (corrugated radiator tube)
4A Yamabe 4B Valley

Claims (4)

A corrugated flexible tube made of a bendable synthetic resin that passes through a flexible fluid tube,
On the inner wall surface of the pipe, a passage for passing a heat generation source with respect to the passage for inserting the fluid pipe is formed in a sealed state. It is integrally formed along the axial direction, and can be brought into contact with a fluid pipe inserted through a fluid pipe insertion passage at a portion that is deviated in a circumferential direction from a heat radiating partition wall on the inner wall surface of the pipe. A corrugated flexible tube in which a flexible synthetic resin support is integrally formed on the tube axis side.   The support body is formed at a plurality of locations in the circumferential direction of the inner wall surface of the pipe, and the fluid pipe inserted through the fluid pipe insertion passage with the partition wall for heat dissipation is held at a position spaced from the inner wall surface to the pipe axis side. The corrugated flexible tube according to claim 1, wherein the corrugated flexible tube is configured to.   The corrugated flexible tube according to claim 1, wherein the heat dissipating partition wall portion is composed of a corrugated heat dissipating tube having a peak portion and a valley portion. The corrugated flexible tube according to claim 3, wherein the corrugated heat radiating tube has the same pitch as the corrugated flexible tube.

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