JPH1182875A - Heat insulating coated tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic tube which is easy to manufacture and a cut surface of which is not easily damaged when cutting, by coating each plastic tube for heating and cooling with thin coating film, a heat insulating material layer and outer skin film. SOLUTION: Two plastic tubes are placed in a center part, and they are required to be integrally coated with thin coating film. The thin coating film is to integrally fix the two plastic tubes so as not to deviate each other. Metal foil and film of olefin resin are used for the thin coating film. Preferably the thin coating film has a structure in which adhesive is painted on its longitudinal end part and this part is overlapped and adhered to another longitudinal end part of the thin coating film. A heat insulating material layer is required to be formed outside the thin coating film. The heat insulating material layer functions so that cool water is not warmed by ambient temperature and hot water is not cooled by the ambient temperature, and eliminates water hammer noise. The heat insulating material is exemplified by crosslinked polyethylene foam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat insulating cladding tube.
More specifically, a detached house, an insulating cladding tube suitably used as a hot and cold water pipe of a centralized cooling and heating system used for an apartment house or a commercial building, and a detached house,
Insulation cladding suitable for use as a water supply / hot water supply pipe used in apartment buildings or commercial buildings, etc., which is easy to manufacture and insulates plastic pipes easily even when cut when adjusting the length. It relates to a cladding tube.

[0002]

2. Description of the Related Art Conventionally, in single-family houses, apartment houses, commercial buildings, and the like, a system for controlling indoor temperature by installing a centralized cooling / heating system for the purpose of improving the livability has been adopted. became. In this centralized cooling and heating system, water as a heat medium is cooled or heated mainly by electricity or gas by a heat source device installed outdoors, and the heat medium is heated by a floor heating mat or wall mounted indoors by plastic pipes. There is adopted a method of leading to a terminal device of a type or a ceiling embedded type. The plastic pipe for guiding cold and hot water to the terminal device has a disadvantage that work efficiency is poor when the outgoing pipe and the return pipe are separately arranged and constructed.

On the other hand, prefabricated building methods have become widespread for the purpose of rationalizing construction work. In the prefabricated building method, each unit, such as a washroom, a bath and a toilet, is
Units, kitchens, and washing machines are each manufactured in a factory in advance, such as one unit. Floors, walls, ceilings, etc. are also manufactured in the factory, and some of these are assembled on a belt conveyor in the factory. And assembling them by carrying them to a construction site, and carrying all the unit parts to a construction site to assemble them into a target building.

[0004] When various pipes such as water supply and hot water supply are constructed on the above-mentioned building, a header construction method and a sheath pipe header construction method have been conventionally proposed and put to practical use in order to shorten the construction time. "Header construction method" refers to connecting a flexible pipe or the like to each of a plurality of branch ports provided on a header connected to a main cold / hot water or water supply / hot water supply pipe, and constructing this pipe. This is a method of laying on a floor wall of an object and guiding it to a terminal device and a faucet device (destination) at a desired place. According to this method, it is possible to shorten the time for piping work, but further shortening is required, and a plurality of branch ports of the header are connected to a pipe member having a predetermined length of flexible pipe connected in advance. An assembly has been proposed (JP-A-7-158128).
Reference).

[0005] The "Saya pipe header method" refers to a method of laying a pipe on a floor wall of a building from a header connected to main cooling / heating water or a water supply pipe to a desired place. In this method, a member (sheath pipe) is laid, and then a flexible pipe is inserted through the tubular member (sheath pipe). According to this method, since flexible piping is not stepped on by an operator or directly touches the slab surface, it is not damaged, does not require any skill in piping work, and is not an expert. Although there is an advantage that the construction can be easily performed, there are a problem of carrying in and transporting in a case of a long length and a problem of securing a work space at a construction site. In order to solve such a problem, a flexible pipe having a predetermined length is inserted into a sheath pipe having a predetermined length, and one end thereof is connected to a plurality of branch ports of the header in advance. A method has been proposed in which a member is constructed as a sheath tube header prefabricated unit wound in a coil shape (Japanese Patent Laid-Open No. 7-1974).
No. 95).

[0006] According to these proposed methods, the construction time of piping can be reduced to some extent. But,
Pipes for cold / hot water, pipes for water supply / hot water supply, and the like must be separately laid and installed in the terminal equipment, and the complexity of such installation work is not reduced by the above-described improvement method. Plastic pipes can be distinguished between pipes for cold and hot water, and pipes for hot and cold water supply, with color distinction, printed letters on the surface, colored lines, etc. Must.

[0007] Outgoing pipes and return pipes of the hot and cold water of the above-mentioned centralized cooling and heating system, and pipes for water supply and hot water supply to the same place are also:
A pipe for cold / hot water, or a pipe for water supply / hot water supply arranged in contact with each other, and both pipes are collectively covered with heat insulating material. (2) A pipe for cold / hot water, or a water supply pipe and hot water supply A proposal has been made in which a heat insulator is interposed between pipes and these are collectively covered with a heat insulating material. (1) above,
In any case of (2), when the two pipes were covered with the heat insulating material, the contact surfaces of the pipes were slippery and the coating operation was difficult. Further, when the heat insulating cladding tube is applied to a predetermined place, the heat insulating cladding tube is cut for the purpose of adjusting the length, but at this time, there is a disadvantage that the cut surface of the plastic tube is easily damaged. When connecting this heat insulating cladding tube to a heat source machine installed outdoors,
When a normal plastic film is used, the weather resistance is inferior and there is a drawback that it cannot withstand long-term use.

[0008]

DISCLOSURE OF THE INVENTION In view of the above situation, the present inventors have insulated cladding pipes for going and returning pipes of cold / hot water of a centralized cooling / heating system, and detached houses, high-rise houses,
Insulated cladding for water and hot water mainly used in buildings such as hotels and commercial buildings. (1) Easy to manufacture,
(2) When cutting to a predetermined length, the cut surface of the plastic pipe is not easily scratched, (3) The construction on site is simple, the construction time can be significantly reduced, and (4) Even when used outdoors As a result of intensive studies for the purpose of providing a product having excellent durability, the present invention has been completed.

[0009]

In order to solve the above-mentioned problems, according to the present invention, in a heat insulating cladding tube in which the outer peripheral surface of a plastic tube is coated with a heat insulating material, two plastic tubes coated with a coating thin film are formed at the center. A heat insulating material layer is formed on the outer peripheral surface of the coating thin film, and the outer periphery of the heat insulating material layer is covered with a skin film.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the present invention, examples of the plastic tube include a tube that can be connected mechanically or by fusion such as a crosslinked polyethylene tube and a polybutene tube. Among them, preferred is
It is a cross-linked polyethylene tube. It is preferable to change the type of coloring or add a color line to the plastic pipe so that the outgoing pipe / return pipe of cold / hot water and the pipe for water supply / hot water supply can be distinguished. The diameter of the plastic tube is
Although there is no particular limitation, it is preferable to select a size in the range of 5 to 50 mm.

[0011] In the heat insulating cladding tube according to the present invention, two plastic tubes are arranged at the center, and these two plastic tubes need to be integrally coated with a coating thin film. The coating film functions to integrally fix the two plastic tubes so that they do not shift. Coating thin film, metal foil,
Examples include an olefin resin film, a polyester resin film, and a laminate of a metal foil and a plastic film. Particularly preferred are metal foils and laminates of metal foils and plastic films. The coating film is
Preferably, an adhesive is applied to the end in the length direction, and this portion is overlapped and bonded to the other end in the length direction of the coating thin film.

In order to prevent the heat of one plastic tube from being transmitted to the other plastic tube, a thin foamed plastic tape may be wrapped around the surface of the plastic tube before being integrally coated with the coating thin film. it can. When two plastic tubes are coated with the coating thin film, a copper wire coated with a resin such as polyvinyl chloride or polyethylene can be simultaneously disposed as a signal line.

The heat insulating cladding tube according to the present invention requires that a heat insulating material layer be formed outside the coating thin film. The thermal insulation layer functions to prevent cold water from being heated at the surrounding temperature, and to prevent hot water from being cooled at the surrounding temperature, and in some cases, to mute the water hammer sound. Examples of the heat insulating material layer include a crosslinked polyethylene foam, a polypropylene foam, and glass wool. Since the plastic pipe member is wound in a coil shape and stored and transported, a plastic foam such as a crosslinked polyethylene foam or a polypropylene foam is preferable. The thickness of the heat insulating material layer can be variously changed depending on the amount of the heat medium passed through the tube, and is preferably selected in the range of 0.5 to 3.0 mm.

The shell film functions to fix the heat insulating material layer and to make the heat insulating cladding easy to handle. As the outer cover film, films made of polyolefin resin such as polyvinyl chloride, polyethylene, polypropylene, ethylene / vinyl acetate copolymer, acrylic resin, fluorine resin, and polyester resin are preferable. The outer film is preferably embossed or made of a foamed film, because it can be made less slippery when handling the heat insulating cladding tube. When the heat insulating cladding tube is used outdoors, it is preferable to form a film by blending an ultraviolet absorber, a light stabilizer and the like with the resin for producing the outer film.

Examples of the ultraviolet absorber include a salicylic acid-based ultraviolet absorber, a benzophenone-based ultraviolet absorber, a benzotriazole-based ultraviolet absorber, and a cyanoacrylate-based ultraviolet absorber. Of these, benzophenone-based and benzotriazole-based are preferred. As the light stabilizer, a hindered amine light stabilizer is preferable.

There is no particular limitation on the method for producing the heat insulating cladding tube according to the present invention. First, two plastic tubes are integrated and covered with a coating thin film. Next, a heat insulating material layer is formed on the outer side of the coating thin film, and the two plastic tubes are located at substantially the center of the heat insulating coating tube. The outer periphery of the heat insulating material layer is covered with a skin film to obtain a product. Such work shall be performed in a factory.

The heat-insulating cladding tube according to the present invention is used for installation in a place required as a going pipe / return pipe to a centralized cooling / heating system terminal of cold / hot water, and for a place where water / hot water supply is required. Used for construction. The locations for sending the hot and cold water of the centralized cooling and heating system are each room of a general house, and the terminal includes a floor-mounted hot water floor heating mat, a wall-mounted indoor unit, a ceiling-mounted indoor unit, and the like. Examples of places where water supply / hot water supply is required include water supply / hot water supply for kitchen, water supply / hot water supply for bath, water supply / hot water supply for shower room, water supply / hot water supply for vanity stand, and the like.

In order to construct the above-mentioned heat insulating cladding pipe, in the case of a centralized cooling and heating system, first, the kind and number of heat insulating cladding pipes required for one construction unit (one for one house, one room, etc.) Check and prepare when storing individually in cardboard boxes. Next, transport these cardboard boxes to the construction site, check the insulation cladding tube suitable for each terminal device on the display of the cardboard box and remove it. After checking, fix it to the terminal device. Next, the pipe is unwound along the installation route of the heat-insulating cladding pipe, fixed in place with a corner vent, pipe saddle, etc., and the other end of the heat-insulating cladding pipe is used for cold water, hot water Confirm the use and fix each to the cold and hot water header. In the case of a water supply / hot water supply pipe, the construction may be performed in the same procedure as above.

Conventionally, when constructing outgoing and returning pipes for hot and cold water in the case of a centralized cooling and heating system, and when constructing pipes for water supply and hot water supply, these pipes are separately arranged along the pipe route. The work of piping while unraveling and fixing in place by corner vents, piping saddles, etc.
Each had to be constructed separately. When constructing the heat-insulating cladding tube according to the present invention, since the outgoing pipe / return pipe and the pipes for water supply / hot water supply are integrally coated with the coating thin film, the pipe work along the pipe route, corner venting ,
Fixing to a fixed position with a piping saddle, etc., only needs to be performed once, and the construction work is easy and the construction time can be greatly reduced.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view taken at right angles to the length direction of an example of the heat insulating cladding tube according to the present invention, and FIG. 2 is a cross-sectional view taken at right angles to the length direction of another example. Is a schematic perspective view of an example in which a centralized cooling and heating system is arranged in a general house, and FIG. 4 is a schematic perspective view of an example of a water surrounding unit of a general house constructed by the construction method according to the present invention.

1 and 2, 10 is a plastic tube, 11 is a coating thin film, 12 is a signal line, 13 a heat insulating material layer, 1
Reference numeral 4 denotes an outer cover film, and reference numeral 15 denotes a foamed plastic film. In FIG. 3, in a plurality of rooms 30, cold / hot water from a heat source device 31 installed outdoors is guided to a cold / hot water header 33 by a heat insulating cladding tube 32, and further from the cold / hot water header 33 to a floor-standing type by a heat insulating cladding tube 32. It is guided to the hot water floor heating mat 34, the wall-mounted indoor unit 35, and the ceiling embedded indoor unit 36. The heat source unit 31 is connected to a water supply / drainage pipe, a gas pipe, an electric wire, and the like, and has a built-in electric motor. A heat valve unit 37 is installed in the middle of the heat insulating cladding tube 32 so that remote control can be performed. , Communication lines are arranged.

In FIG. 4, a hot water supply pipe 4 through which hot water from a hot water supply 40 heated by a heat source unit (not shown) is introduced.
1 is connected to a header 42 on the hot water supply side, and a header 44 on the water supply side is connected to a water supply pipe 43 through which tap water is led. A plurality of hot water pipes connected to the header 42 on the hot water supply side and a plurality of water pipes connected to the header 44 on the hot water supply side are respectively guided to faucet devices provided at a plurality of locations in the dwelling unit. Piping members 45, 46, 47, 48 in which a water supply pipe and a hot water supply pipe are covered with a heat insulating material layer. In the illustrated example, the pipe member covered with the heat insulating material layer is used as a pipe to a sink, a sink, a bathtub, and a shower. No hot water is supplied to the washing machine and the toilet.
It is constructed with only 9, 50.

[0023]

The present invention has the following particularly advantageous effects, and its industrial value is extremely large. 1. In the heat insulating cladding tube according to the present invention, since the two plastic tubes are covered and fixed with the coating thin film, the coating operation with the heat insulating material layer is easy and easy to manufacture. 2. In the heat insulating cladding tube according to the present invention, since the two plastic tubes are covered with the coating thin film and fixed, the plastic tube is not easily damaged when cutting. 3. When installing the heat insulating cladding pipe according to the present invention, the pipes for cold water and hot water going pipes and return pipes, and water supply and hot water supply pipes are bonded to each other, so piping work along the pipe route, corner venting, piping Fixing to a fixed position with a saddle or the like only needs to be performed once, and the construction work is easy and the construction time can be greatly reduced.

4. Insulating cladding tubes according to the present invention, when each of the plastic tubes through which cold and hot water passes is covered with a heat insulating material layer, the cold water and hot water passing through one tube are affected by the temperature from the hot water and cold water passing through the other tube. Cold water and hot water can be supplied to the destination without receiving it. 5. When a UV absorber, a light stabilizer, and the like are blended in the outer cover film, the heat insulating cover tube according to the present invention has excellent durability without deterioration of the outer cover film even when used outdoors for a long period of time.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view cut at a right angle to a length direction of an example of a heat insulating cladding tube according to the present invention.

FIG. 2 is a cross-sectional view cut at right angles to the length direction of another example.

FIG. 3 is a schematic perspective view of an example in which a centralized cooling and heating system is arranged in a general house.

FIG. 4 is constructed by the heat insulating cladding tube according to the present invention;
It is a schematic perspective view of an example in the water surrounding unit of a general house.

[Explanation of symbols]

10: Plastic tube 11: Coated thin film 12: Signal line 13: Heat insulation material layer 14: Outer shell film 15: Foamed plastic film 30: Room 31: Heat source device installed outdoors 32: Heat insulation coating tube 33: Cold and hot water header 34: Floor Stationary hot-water floor heating mat 35: Wall-mounted indoor unit 36: Ceiling-mounted indoor unit 37: Thermal valve unit 40: Hot water supply unit 41: Hot water supply pipe 42: Hot water supply header 43: Water supply pipe 44: Water supply side header 45, 46, 47, 48: piping members covered with a heat insulating material layer 49, 50: water supply piping

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeko Iijima 8-3-2 Chuo, Ami-cho, Inashiki-gun, Ibaraki Pref. Mitsubishi Chemical Industrial Products Co., Ltd. (72) Inventor Naoya Maki Hiranocho, Chuo-ku, Osaka-shi Chome 1-2, Osaka Gas Co., Ltd.

Claims (3)

[Claims] 1. A heat insulating cladding comprising an outer peripheral surface of a plastic tube covered with a heat insulating material, wherein two plastic tubes coated with a coating thin film are arranged at a central portion, and a heat insulating material is provided on the outer peripheral surface of the coating thin film. A heat insulating cladding tube comprising: a heat insulating material layer; a heat insulating material layer; 2. The heat-insulated cladding tube according to claim 1, wherein the two plastic tubes are coated on their surfaces with a foamed plastic film. 3. The heat-insulating material layer, the inner layer is a cross-linked polyethylene foam layer or a polypropylene foam layer, and the weather-resistant outer film is made of polyethylene, polypropylene, acrylic containing an ultraviolet absorber and / or a light stabilizer. Resin, selected from fluororesin films,
The heat insulating cladding tube according to claim 1 or 2.