JPH10205689A - Heat insulating tube for longitudinal pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce loss of a material by forming a heat insulating tube for a longitudinal pipe composing an integratedly cylindrical material of foaming synthetic resin, in which recessed and projection parts having softness and flexibility are formed along all length on an inner surface, which is formed in a spiral shape in a flat condition, which is pulled out from a final end side at the time of use, and is used by cutting appropriately according to the length of a pipe. SOLUTION: A heat insulating tube 1 is made of foaming synthetic resin, in which fine recessed and projection parts are formed on the inner surface thereof. Since the recessed and projection parts have softness and flexibility, the projection parts are broken when a drain pipe 5 is inserted so as to enable insertion easily. After insertion, an outer periphery is push-pressed by the drain pipe 5, and the drain pipe 5 is held surely. The heat insulating tube 1 is wound in a spiral state, it is wound back from its final end side in order. The tube 1 is inserted into the drain pipe 5, and is cut by an appropriately cutting means at a time point when a construction having a desired length is completed. It is thus possible to carry out an outer construction simply even in the case of a desired longitudinal pipe and the like, and it is also possible to prevent generation of any waste.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating tube used for keeping the heat of a drain pipe and various piping pipes of an air conditioner or the like, and more particularly to a heat insulating tube for a long pipe which is fitted on the outer periphery of a long pipe and is convenient for construction. It is about.

[0002]

2. Description of the Related Art Conventionally, as a heat insulating tube such as a drain pipe of an air conditioner, a commercially available straight pipe of 2 m or 4 m is used. A 2-meter heat-insulating tube containing an adhesive jacket) is cut and used according to the length of the drain pipe at the site.

[0003]

However, the above-mentioned straight insulated pipe having a length of 2 m has a repulsive force, cannot be wound, has a large storage space, and occupies a large volume during transportation. Since there is no degree of freedom in handling at the distribution stage, and only the required dimensions are cut at the site, a fixed length of 2 m results in excessive loss after cutting and is economically disadvantageous.

[0004] The present invention addresses the above-mentioned situation, and in particular, develops a heat insulating tube that can be made compact by winding a long heat insulating tube in a spiral shape, and provides a great deal of freedom in storage and transportation in the distribution stage. The purpose of the present invention is to increase the length and lengthen the length of the pipe, thereby cutting the pipe in accordance with the local pipe length, facilitating the construction, reducing material loss, and reducing the construction cost.

[0005]

That is, a feature of the present invention that achieves the above-mentioned objects and solves the problems is that it is made of a one-piece cylindrical body made of a foamed synthetic resin, has flexibility and flexibility, and has a full length on its inner surface. A heat insulating tube for a long pipe, which is formed into a spiral shape in a flattened state and which can be pulled out from the terminal end side and cut and used as appropriate according to the pipe length when used.

Here, various materials can be used as the synthetic resin material of the heat insulating tube of the present invention, but low-density polyethylene is generally used. Usually, the above-mentioned foamed polyethylene foamed about 30 times is used. In addition, the wound material of the flat tube wound in a spiral shape is usually housed in a casing during construction use, pulled out from an end side thereof through an opening provided in the casing, and discharged to a drain pipe made of hard vinyl chloride or the like. It is preferred that they fit and adhere.

[0007]

When the heat insulating tube of the present invention is installed on a drain pipe or the like and is to be constructed, it is sequentially pulled out from the end side of the spirally wound product, and the drain pipe or the like is inserted inside the drain pipe and the drain pipe is sequentially inserted. When the tube is cut at the stage where it has been applied to the required outer length of the drain pipe or the like and the required length has been applied, the installation of the heat insulating tube to the drain pipe or the like is completed.

When the heat insulating tube is fitted to the outer periphery of the drain pipe, the inner surface of the heat insulating tube is formed with irregularities, so that the contact area is small and smooth fitting is possible. And the elastic pressure action by the convex portion thereof is added, so that secure fitting and holding can be achieved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows one embodiment of the heat insulating tube according to the present invention. In the figure, reference numeral 1 denotes a long heat insulating tube, which is a foamed synthetic material of polyethylene, especially low density polyethylene, polypropylene, vinyl chloride resin, polyamide resin, rubber and the like. It is made of resin and is made into a tube as a tubular integral molded product by known extrusion molding means etc., and the outer diameter and thickness of the tube are formed according to the diameter and application of the pipe to be packaged, such as a drain pipe At time, it is appropriately selected.

Since the heat insulating tube 1 is made of the above-mentioned foamed synthetic resin and has flexibility, it can be easily flattened by pressing. As shown in FIGS. In this state, it is wound in a multiple spiral shape and formed into a wound with a required length, usually 15 to 30 m, preferably about 20 m. At this time, the core material 2 may or may not be used.

As shown in FIG. 3, the heat insulating tube 1 has fine irregularities 1a formed on its inner surface.
Since the unevenness has flexibility, when the drain pipe 5 shown in FIG. 1 is inserted, the convex portion is crushed to enable easy insertion, and after the insertion, the outer periphery of the pipe 5 is pressed. And has a role of securely holding the pipe 5.

The heat insulating tube 1 is spirally wound, and is sequentially rewound from its end side to drain pipe 5 or the like.
However, as long as the form can be maintained, the casing 3 may be provided with an opening 4 on one side as shown in FIG. 1 for transportation and handling.
It is preferable that the end portion of the heat insulating tube 1 is pulled out from the opening 4. The casing 3 may be made of a synthetic resin, or may be made of cardboard or wooden.

Thus, the heat insulating tube 1 is sequentially pulled out from the terminal side at the time of winding and inserted into the drain pipe 5 or the like. The exterior can be easily constructed even with a long drain pipe or the like, and no waste of material occurs.

[0015]

According to the present invention, a heat insulating tube made of a foamed synthetic resin is wound into a flat state and wound to a required length as described above.
The volume is made compact, and it is pulled out sequentially from the end side as a wound product, externally fitted to a drain pipe, etc., and appropriately cut at the end of required construction. Compared to the use of tubes, the storage space can be significantly reduced, the space inside the vehicle during transportation can be reduced, and the handling cost can be greatly reduced, including the flexibility of handling. It is economical because there is no loss at all, and it is easy to work by simply inserting it into the pipe, and there is no need for skill such as bonding with a full length pipe as in the past, so anyone can work easily And there is also a quality advantage that there is no variation in the quality of the work, and a remarkable improvement in convenience and cost reduction can be achieved simultaneously throughout the insulation work. It has the results. Moreover, the heat insulating tube of the present invention has irregularities formed on the inner surface,
The effect of the flexible elasticity facilitates the insertion of the pipe, and also has the effect of ensuring the heat insulation of the inserted pipe and improving the workability.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entire heat insulating tube according to the present invention.

FIG. 2 is a schematic sectional view taken along line AA in FIG.

FIG. 3 is a partially cutaway view showing the inner surface of the heat insulating tube according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat insulation tube 1a Irregularities of heat insulation tube inner surface 3 Casing 4 Opening 5 Pipe such as drain pipe

Claims (3)

[Claims] 1. A heat insulating tube which is provided on a pipe such as a drain pipe, which is made of an integral tubular member of a foamed synthetic resin, has flexibility and flexibility, and has irregularities formed on the entire inner surface thereof. It is characterized in that it is spirally wound in a flattened state so as to minimize the volume for storage or transportation, etc., and can be cut and used as appropriate according to the length of the drawn pipe from the end when used. Thermal insulation tube for long pipes. 2. The heat insulating tube for a long pipe according to claim 1, wherein the foamed synthetic resin tube is a foamed low density polyethylene tube. 3. A long tube, wherein the spirally wound heat-insulating tube according to claim 1 or 2 is housed in a casing, and the terminal end thereof can be pulled out through an opening provided in the casing. Insulated tube for pipe.