JPH0361879B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat insulating piping material for hot water supply and air conditioning, and more specifically to a heat insulating piping material having an air insulation layer formed thereon.

[Conventional technology]

Conventionally, insulating piping materials, such as copper pipes or resin pipes, whose outer periphery is covered with foamed synthetic resin have low heat radiation loss and can be left as is, but those with an air insulation layer around the outer periphery of the pipe do not dissipate heat as is. Since the loss is large and rainwater enters from the ends, it is necessary to seal the ends of the piping material by wrapping tape or the like, which is very complicated and inconvenient.

[Problem that the invention seeks to solve]

The present invention was invented in view of the above circumstances, and has a structure in which the pipe body is housed in a corrugated inner resin tube, and this inner resin tube is further housed in a corrugated outer resin tube, so that the end portion of the insulating piping material is The present invention relates to an insulating piping material that can be easily covered with a cap, has little heat radiation loss through an air insulation layer, and can prevent rainwater from entering.

[Means for solving problems]

The present invention will be described with reference to the embodiments shown in the drawings. Although the drawings show an example of a double-type insulating piping material, a continuous-type insulating piping material may also be used.

FIG. 1 is a perspective view of the present invention, FIG. 2 is a perspective view of a heat insulating piping material using the present invention, and FIG. 3 is a sectional view of the same.

Reference numeral 1 denotes a tube body made of metal (soft copper tube) or synthetic resin, and there is an inner resin tube 2 surrounding the outer periphery of the tube body 1.

The inner resin tube 2 is a corrugated resin tube 2 in which a protrusion 3 is formed facing inward, and a film 4 is wound around the outer circumference of the inner resin tube 2. As the film with low thermal emissivity, aluminum foil or a synthetic resin film laminated on aluminum foil is used, and in the latter case, it is wound so that the aluminum foil becomes the outer surface. An outer resin tube 5 is provided around the outer periphery of the wound film 4. The outer resin tube 5 is a corrugated resin tube in which an inward protrusion 6 is formed.

Therefore, since the protrusion 3 is provided between the tube body 1 and the inner resin tube 2, an air layer 7 is formed. A film 4 is provided on the outer periphery of the inner resin tube 2 to prevent heat radiation due to radiation, and an outer resin tube 5 is provided on the outer periphery of the film 4. Since the outer resin tube 5 is formed with an inward protrusion 6, an air layer 8 is formed between the film and the outer resin tube 5. If the ends of such insulating piping materials are not sealed, their insulation properties will be impaired and rainwater will enter. The caps 10 and 11 shown in FIG. 1 are inserted with caps made of soft synthetic resin such as vinyl chloride to seal the ends. One end of the cap 10 is formed into a cup shape with an inner diameter that fits tightly to the outside of the outer resin pipe 5, and is brought into close contact with the outer resin pipe 5.
Two cylindrical bodies 12 are formed at the other end with an inner diameter that closely contacts the outer diameter of the inner resin pipe 2, and each inner resin pipe 2
Insert it.

The cap 11 has an inner diameter equal to the outer diameter of the inner resin tube 2 at one end, and an inner diameter equal to the outer diameter of the tube body 1 at the other end.

Therefore, when the cap 10 is fitted, the air insulation layer between the inner resin pipe and the outer resin pipe is isolated from the outside, and when the cap 11 is fitted afterwards, the air insulation layer between the tube body and the inner resin pipe is cut off. is isolated from the outside world.
The caps 10 and 11 are made of soft vinyl chloride or the like, and have elasticity and can be brought into close contact with the outer shape and outer diameter of the outer resin pipe 5, inner resin pipe 2, and pipe body 1. If adhesive is applied beforehand, adhesion will be good. Note that the exposed portion of the film is peeled off, and an appropriate length of the tube body 1 and inner resin tube 2 is exposed. Also, when the exposed length of the inner resin tube 2 is small, the cap 10 is peeled off. The cap 11 and the cap 11 may be integrally formed. At this time, an appropriate length may be formed at the other end of the cap 10 to be equal to the outer diameter of the tube 1 from the end of the cylindrical body 12 having an inner diameter equal to the outer diameter of the inner resin tube 2.

〔Effect of the invention〕

According to the present invention, an independent air heat insulation layer is formed between the tube body 1 and the inner resin pipe 2, and between the inner resin pipe and the outer resin pipe 5, and these are isolated from the outside, so that the heat insulation performance of the air cross-sectional layer is It also prevents rainwater from entering. Further, the cap of the present invention is easy to manufacture, the cost of the cap is low, and the installation process is simple because it only needs to be inserted and attached.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the present invention, FIG. 2 is a perspective view of the heat insulating piping material, and FIG. 3 is a sectional side view of the same. 1... Pipe body, 2... Inner resin pipe, 5... Outer resin pipe, 10, 11... Cap.

Claims (1)

[Claims] 1.Equipped with a corrugated inner resin pipe for accommodating a hot water supply/cooling/heating pipe made of metal or resin pipe, and a corrugated outer resin pipe for accommodating the inner resin pipe, the end of the pipe body is separated from the inner resin pipe. A heat insulating piping characterized in that the inner resin pipe is made to protrude to an appropriate length, the inner resin pipe is also made to protrude from the outer resin pipe to an appropriate length, and a resin cap is attached between the outer resin pipe and the inner resin pipe, and between the inner resin pipe and the pipe body. Material.