JPH09273698A - Heat retaining cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent a pipe body, a coupling part, or a tap from being frozen with a little power consumption without deteriorating the appearance. SOLUTION: In a cylindrical heat retaining cover made of a foamed synthetic resin, able to be divided into a plurality of cover bodies 12, 13 and for heat retaining of the pipe by surrounding the outer peripheries of a pipe body 14, a coupling part, or a tap. One or more recessed grooves 12c capable of housing a band-like or linear heater 16 are formed on a part or the whole inner surface of a plurality of cover bodies. The band-like or linear heater is inserted into the recessed groove. The outer surfaces of a plurality of cover bodies are independently covered with metallic or plastic skins, and it is desirable that one end edge of the skin is bonded to one end edge of the other skin. The outer surface can be coated with a single metallic, plastic or inorganic skin 17 in a state where a plurality of cover bodies are united with each other, and one end edge may be bonded to the other end edge of the skin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating cover for enclosing the outer circumferences of pipes such as water pipes, joints or faucets in cold regions to keep them warm. More specifically, the present invention relates to a heat insulating cover made of a tubular foam synthetic resin that can be divided into a plurality of cover bodies and covers the outer circumference of a pipe body, a joint portion or a faucet in a combined state.

[0002]

2. Description of the Related Art In general, pipes such as water pipes installed in factories, general households, condominiums, etc. are provided with a heat insulating cover to prevent corrosion due to external steam and freezing of tap water in winter. . The heat insulating cover is formed by enclosing a tubular body made of expanded synthetic resin such as polystyrene foam in a tubular body. This heat insulation cover prevents the outside air temperature from being transmitted to the pipe body and prevents freezing in winter.

However, in cold regions, the temperature of the outside air is remarkably lowered. Therefore, it is necessary to make the heat insulating cover sufficiently thick so that the pipe body is not affected by the outside air temperature. For this reason, the outer diameter of the heat insulating cover becomes considerably thicker than the outer diameter of the tubular body to be encapsulated, and there is a problem that the appearance is deteriorated. There is also a problem in that the heat insulating cover may be double or triple wrapped and the number of man-hours for the work of covering the heat insulating cover with the tubular body itself increases. In order to eliminate this point, a belt-shaped heater is spirally wound around the surface of the tubular body, and a heat insulating tape is wound on and fixed to the heater. By directly warming the pipe body with this heater, it is possible to forcibly prevent the freezing of tap water flowing inside the pipe body regardless of a significant decrease in the outside air temperature.

[0004]

However, when the heater is wound around the tubular body, the portion around which the heater is wound clearly appears on the outer surface of the heat insulating tape, and there is a problem that the appearance is deteriorated. Further, since the heat insulating tape is formed to be thin enough to be wound around the pipe body, the heat of the heater is taken to the outside due to its thickness, especially in strong wind, and the taken heat quantity is replenished. There was also a problem that the power consumption for this increased. Even if it is attempted to wrap the tubular body around which the heater is wrapped with the tubular heat insulating cover in order to avoid these points, it is possible to provide the substantially tubular heat insulating cover due to the variation in the outer diameter caused by the winding of the heater. There wasn't. An object of the present invention is to provide a heat insulating cover that can effectively prevent freezing of a pipe body, a joint portion or a faucet with low power consumption without deteriorating the appearance.

[0005]

The invention according to claim 1 is
As shown in FIGS. 1 and 3, a plurality of cover bodies 12, 13 are provided.
Can be divided into a pipe body 14, a joint portion 21 or a faucet 1
The outer periphery of 4b is covered, and the tubular body 14, the joint portion 21 or the faucet 1 is provided.
It is an improvement of a heat insulating cover made of a tubular foam synthetic resin that heat-insulates 4b. The characteristic configuration is that the plurality of cover bodies 12, 1
One or two or more recessed grooves 12c capable of accommodating the belt-shaped or linear heater 16 are formed on the inner surface of a part or all of 3.

The heater forcibly prevents the freezing of the tap water flowing through the inside by directly heating the pipe body, the joint portion or the faucet, and the heat insulation cover adjusts the appearance of the pipe body and the like despite the remarkable decrease in the outside air temperature. The heat insulating cover is preferably divided into two or three cover bodies. In the case of a large-diameter heat insulation cover, it may be divided into three or four or more cover bodies.
Examples of the synthetic foam resin include polystyrene foam, rigid urethane foam, polyethylene foam, and phenol foam, and polystyrene foam is particularly preferable.
The concave groove 12c may be formed in each of the divided cover bodies, or if the cold in the area where the heat insulating cover is provided is not so severe, the concave groove 12c may be formed only in any one of the cover bodies 12. Good (Figure 2). Further, it is preferable to form a plurality of recessed grooves 12c in each cover body and to provide a plurality of heaters in each cover body when the cold in the area where the heat insulation cover is provided is extremely severe. The groove is formed corresponding to the shape of the heater. Examples of the shape of this heater include a strip shape and a linear shape. The belt-shaped heater 16 is preferable in consideration of the efficiency of warming the tube body 14. If the cover body keeps the temperature of the pipe body or the joint portion, it is preferable that the groove is formed in the longitudinal direction of the cover body. However, if the object to be kept warm has a complicated shape such as a faucet or is a pipe with a large diameter, in order to ensure heat retention by the heater, the faucet or It is preferable to form the groove so that the heater is spirally wound around the pipe body.

The invention according to claim 2 is the invention according to claim 1, which is a heat insulating cover in which a belt-shaped or linear heater 16 is inserted into the groove 12c. Pre-set the heater 16 to the groove 1
By adhering it to 2c, it is possible to improve workability when the cover bodies 12 and 13 are attached to the tube body 14. The invention according to claim 3 is the invention according to claim 1 or 2, wherein the outer surface of each of the plurality of cover bodies 12 and 13 is individually covered with a metal or plastic outer cover 27, and one edge of the outer cover 27 is It is a heat insulating cover configured to be adhered to one edge of another outer skin 27.

Examples of the metal outer skin include stainless steel and aluminum alloy, and examples of the plastic outer skin include vinyl chloride outer skin. If the outer skin is a stainless steel plate, its thickness is preferably 0.1-0.3 mm, and if it is an aluminum alloy plate, its thickness is 0.2-.
0.5 mm is preferred. Further, if the outer skin is made of plastic, it is preferable to mold it in advance in a shape in which the cover body is united with a mold. Examples of the adhesive used here include hot-melt adhesives, epoxy resin adhesives, vinyl acetate adhesives, and the like. If the cover bodies 12 and 13 are made of polystyrene foam, the adhesives are preferably hot-melt adhesives. It is preferable to apply this adhesive material to the outer skin in the form of a double-sided adhesive tape in advance.

The invention according to claim 4 is the invention according to claim 1 or 2, wherein the outer surface of the cover body 12, 13 is made of metal, plastic, or inorganic material when the cover bodies 12, 13 are united. It is a covered heat insulating cover. By covering the cover bodies 12 and 13 with metal, plastic or inorganic outer skins 17 and 27, it is possible to prevent the heat insulating cover from being deformed by an external force. The outer cover may be a film, a sheet, or a molded body.The film-like outer cover may be a plastic film or a plastic film on which aluminum is vapor-deposited.The sheet-like outer cover is wound on the outer surface of the cover body. An inorganic material such as a metal plate or a plastic plate having a rotatable thickness or a glass cloth can be used. As for the covering of the outer cover, the outer cover may be coated on the cover body in advance, or the film-like or sheet-like outer cover may be spirally wound around the cover body covering the tube body and the like.

The invention according to claim 5 is the invention according to claim 4, which is a heat insulating cover configured such that one end edge of a single outer skin 17 is adhered to the other end edge of the outer skin 17. By adhering one edge of the outer cover 17 to the other edge, the number of working steps can be reduced as compared with the case where the outer cover is spirally wound. The invention according to claim 6 is the invention according to claim 1 or 2.
It is an invention concerning, and is a heat retention cover by which the outer surface of a plurality of cover bodies 12 and 13 was covered with a paint film. By coating the outer surface of the cover body with a coating film, the appearance can be improved. In particular, if a color such as silver which is not preferred by wild birds is used, it is possible to prevent the wild birds from damaging the heat insulating cover made of foamed synthetic resin.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. As shown in FIGS. 1 and 2,
The heat insulation cover 11 in the present embodiment includes a pair of cover bodies 12,
A pair of cover bodies 12, 13 has a cross-sectional shape obtained by dividing a tubular body from the center, and by fitting them together, a foamed synthetic resin that covers the outer surface of the tubular body 14 and keeps the tubular body 14 warm. It is a heat insulating cover 11 made. Since the pair of cover bodies 12 and 13 are formed symmetrically, one cover body 12 will be described below as a representative.

As shown in FIG. 1, a step portion 12a is formed on the abutting portion of the cover body 12, and the step portion 12a is formed on the abutting surface of the other cover body 13 (see FIG. 2). ), It is possible to reliably prevent invasion of water vapor and the like from the outside. Further, the stepped portions 12c are also provided at both ends of the cover body 12.
When a plurality of heat insulating covers 11 are formed in series in the same tubular body 14, the small diameter step portion of the other heat insulating cover (not shown) is inserted into the large diameter step portion 12c of the other heat insulating cover. Thus, the heat insulation cover 11 can be continuously provided on the pipe body 14. Further, one cover body 12 is provided with a groove 12c in the longitudinal direction at the center of the inner surface thereof so that the belt-shaped heater 16 can be housed therein.
The groove 12c is formed so that its cross-sectional shape corresponds to the outer diameter of the heater 16, and the heater 16 is bonded in a state of being inserted into the groove 12c by a vinyl acetate adhesive material.

The strip-shaped heater 16 is provided with heating wires 16a, 16a, which are heating elements, on both edges thereof.
It is configured to generate heat by passing a current through a and 16a. As shown in FIG. 3, a plug 16b is provided at one end of the heater 16 via a cord 16c,
The power input from the plug 16b generates heat. As shown in FIG. 1, a thermostat 16d is provided in the central portion of the heater 16, and the heater 16 is contacted with the tubular body 14 to detect excessive heating of the tubular body 14 and shut off the electric current flowing through the heating wire 16a. Configured to control the heating of the. The groove 12c has a depth such that the heating surface forms the same surface as the inner surface of the cover body 12 when the heater 16 is mounted. As shown in FIG. 2, the concave groove 12c is provided in the heater 1 when the tubular body 14 is covered with the heat insulating cover 11.
6 is configured to abut the outer surface of the tubular body 14.

Returning to FIG. 1, a metal skin 17 is adhered to the outer surface of the cover body 12. The metal skin 17 has a thickness of 0.
It is made of 2 mm stainless steel, and its plate material is the cover body 1.
A semi-cylindrical part 17 that is machined into a semi-cylindrical shape corresponding to the outer surface of 2.
a and a flat plate portion 17b extended from one end of the semi-cylindrical portion 17a. The length of the flat plate portion 17b from the edge of the semi-cylindrical portion 17a is formed slightly longer than the length of the arc of the semi-cylindrical portion 17a, and as shown in FIG.
When the two and 13 are united and bent so as to cover the outer surface of the other cover body 13 as shown by the arrow in the figure, one edge of the flat plate portion 17b overlaps with the other edge of the semi-cylindrical portion 17a. Formed in length. The outer metal cover is adhered to the outer surface of the cover body 12 by bonding the inner surface of the semi-cylindrical portion 17a with a hot melt adhesive so as to cover the outer surface of the cover body 12, and by applying the adhesive material to the inner surface of the flat plate portion 17b. In this state, the release paper 17c is attached to the adhesive application surface.

As shown in FIG. 2, the heat insulation cover 11 thus constructed is attached to the tube body 14 by fitting the respective cover bodies 12 and 13 from the outside of the heat insulation tube body 14 to each other as shown in FIG. The outer surface of 14 is encapsulated. By enclosing the tubular body 14 with the heat insulating cover 11, the heater 16 is brought into contact with the outer surface of the tubular body 14. When the pair of cover bodies 12 are combined, the respective cover bodies 12, 1
An adhesive material made of a hot melt system is applied to the stepped portions 12a and 13a of 3 to maintain the state in which the respective cover bodies 12 and 13 are united with each other, and surely prevent invasion of water vapor or the like from the abutting surfaces thereof. A pair of cover bodies 12
After the completion of the above-mentioned bonding, the release paper 17c attached to the flat plate portion 17b of the metal outer cover is peeled off, and then bent so as to cover the outer surface of the other cover body 13 as shown by an arrow in the drawing, The flat plate portion 17b is attached to the other cover body 1 so that one end edge of the portion 17b overlaps with the other end edge of the semi-cylindrical portion 17a.
Adhere to 3.

A water pipe 19 erected from the surface 18 in FIG.
The state in which the heat insulation cover 11 of the present invention is encapsulated is shown in FIG. The heat insulating cover 11 is buried from the surface to the underground to a depth where the tap water flowing in the water pipe does not freeze.
Heater 16 extended from the upper end of the
wound around b. The end of the heater 16 is wound around the faucet 14b, and the plug 16b is provided via the cord 16c.
Is inserted into the outdoor outlet 20. If the cold in the area where the water pipe 19 is installed is not so severe, it suffices to provide the heat insulating cover 11 only in this water pipe 19, but when the cold in that area is extremely severe, as shown by the chain double-dashed line in the figure, L-shaped joint 21 and faucet 14
Heat insulation covers 22a, 2 having concave grooves on the inner surface up to b
2b is provided. This surely prevents freezing of the tap water flowing inside.

4 and 5 show another embodiment of the present invention. 4 and 5, the same reference numerals as those used in the above-described embodiments indicate the same parts. The characteristic configuration of this embodiment is that the outer surfaces of the pair of cover bodies 12 and 13 are individually covered with the metal skins 27 and 27. One cover body will be described as a representative in FIG. The metal outer cover 27 is made of stainless steel with a thickness of 0.2 mm, and the plate material is a semi-cylindrical portion 2 processed into a semicircular shape corresponding to the outer surface of the cover body 12.
7a and an extension portion 27b slightly extended from one end of the semi-cylindrical portion 27a. The metal skin 27 is adhered to the outer surface of the cover body 12 by bonding the inner surface of the semi-cylindrical portion 27a with a hot melt adhesive so as to cover the outer surface of the cover body 12, and applying the adhesive material to the inner surface of the extension portion 27b. In this state, the release paper 27c is attached to the coated surface of the adhesive.

The tubular body 1 of the heat insulating cover thus constructed
As shown in FIG. 5, the pair of cover bodies 1 is attached to the cover body 1.
When the bonding of Nos. 2 and 13 is completed, the release papers 27c and 27c (FIG. 4) attached to the extension portions 27b and 27b of the metal outer skins 27 and 27 are peeled off, and then the other cover The extension portion 27b is adhered so as to overlap with one end edge of the metal outer skin 27 of the bodies 13 and 12. Since the other aspects are the same as the above-described aspect, the repeated description will be omitted.

[0019]

As described above, according to the present invention, one or more concave grooves capable of accommodating the belt-shaped or linear heaters are formed on the inner surfaces of some or all of the plurality of cover bodies. ,
By inserting a belt-shaped or linear heater into the groove, the heater directly heats the pipe body, the joint portion or the faucet. As a result, it is possible to forcibly prevent the freezing of the fluid flowing inside regardless of the remarkable decrease in the outside air temperature. Further, since the heater is surrounded by the cover body, the heat generation of the heater is not taken away to the outside air and the pipe body, the joint portion or the faucet is effectively warmed. As a result, it is possible to effectively prevent freezing with a small amount of power consumption and improve the appearance of the tubular body and the like. Also, if the outer surface of the cover body is covered with an outer cover, the outer cover can prevent the heat insulating cover from being deformed by an external force. If the outer cover is adhered to the cover body in advance, it will be compared to the case where the outer cover is wound later. It is also possible to reduce the work man-hours. Further, by covering the outer surface of the cover body with the outer skin or the coating film, it is possible to prevent particularly a wild bird from damaging the heat insulating cover made of the foamed synthetic resin by sticking it.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a heat insulating cover according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view in which the cover encloses the tubular body.

FIG. 3 is a side view of the water pipe covered with the cover.

FIG. 4 is a perspective view corresponding to FIG. 1 and showing another embodiment of the present invention.

5 is a perspective view corresponding to FIG.

[Explanation of symbols]

 12, 13 Cover body 12c Recessed groove 14 Tubular body 16 Heater 17,27 Metal shell

Claims (6)

[Claims] 1. A pipe body (14) which can be divided into a plurality of cover bodies (12, 13) and which encloses the outer circumference of a pipe body (14), a joint portion (21) or a faucet (14b). In the heat insulating cover made of a tubular foam synthetic resin that keeps the joint part (21) or the faucet (14b) warm, a band-shaped or linear heater is provided on the inner surface of a part or all of the plurality of cover bodies (12, 13) ( A heat insulating cover, characterized in that one or more concave grooves (12c) capable of accommodating 16) are formed. 2. The strip-shaped or linear heater (16) has a groove (12c).
The heat insulating cover according to claim 1, which is attached to the heat insulating cover. 3. The outer surface of each of the plurality of cover bodies (12, 13) is individually covered with an outer skin (27) made of metal or plastic, and one end edge of the outer skin (27) is one end of another outer skin (27). The heat insulating cover according to claim 1, wherein the heat insulating cover is configured to be adhered to the edge. 4. The heat insulating cover according to claim 1, wherein a plurality of cover bodies (12, 13) are covered with an outer skin (17) made of metal, plastic or inorganic material in a state of being united. 5. A single outer skin (17) has one edge at the outer skin (17).
The heat insulating cover according to claim 4, wherein the heat insulating cover is configured to be bonded to the other end edge of the. 6. The heat insulating cover according to claim 1, wherein the outer surfaces of the plurality of cover bodies (12, 13) are coated with a coating film.