JPH108586A - Down duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the transportation of down ducts and assembling work thereof at the construction site, by forming the inside of the down ducts with the first heat-insulation layer having a high neat-resistant property and forming the outside thereof with the second heat-insulation layer having a lower heat- resistant property than the first heat-insulation layer and bending it at groove lines and forming a hinge and bending it to form a rectangular cylinder. SOLUTION: The part forming the inside part on bending a heatinsulation plate 26 is formed as the first heat-insulation layer 29a having a high heat- resistant property and the part forming the outside part is formed as the second heat-insulation layer 29b having a lower heat-resistant property than the first heatinsulation layer 29a. A polyester film 30 with aluminum vapor deposition is stuck to the outside face of the second heatinsulation layer 29b. A V-shaped notch is cut in a laminate board constituted of the heat-insulation layers 29a, 29b, and the polyester film 30 with aluminum vapor deposition and grooved lines 27 and bending hinges 28 are formed to divide it into four boards. On assembling, it is bent by turns at the bending hinges 28 and the end is connected in a mortice groove 31. On transporting it, as it is collapsed, it is bulkless and it can be easily assembled at site.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling duct used in a solar system house for collecting solar heat during the day.

[0002]

2. Description of the Related Art A solar system house will be described first. It has long been practiced to open a large opening on the south side of a house to receive a large amount of winter solar radiation and open a part of it in summer to allow ventilation. Taking this one step further, a sunroom is created outside the living room, and this is used as a greenhouse to take warm air from here into the living room. The applicant has previously proposed and applied for a solar system house that promotes this reasonably and can effectively use air collected by sunlight without being limited to the direction. Japanese Patent Application No. 61-311485 (JP-A-63-165633),
Japanese Patent Application No. 62-234666 (JP-A-64-75858) is one such example.

Referring to FIG. 5, an air flow path 2 having a roof gradient is formed immediately below a metal roof plate 1 such as a color iron plate as a solar heat collecting section. It is opened as an outside air inlet 3 at the eaves or the like (there may be the back of a hut), and the other end is connected to a ridge duct 4 as a semicircular heat collecting box made of heat insulating material. The lower surface of the air passage 2 having a roof gradient formed immediately below the metal roof plate 1 such as a color iron plate is provided with a heat insulating layer 24 covered with glass wool or the like.
And a part of the roof was covered with glass 23. The glass 23 prevents the wind from hindering the metal roof panel 1 from being heated by solar heat by cooling when the external wind is strong.

A backflow prevention damper 6, a fan 7, and a flow path switching damper 8 are provided therein.
The handling box 5 which is opened to the outside by the exhaust duct 9 is installed in the attic 22 which is the attic space. The exhaust port at the end of the exhaust duct 9 is surrounded by an exhaust gallery provided on the outer wall.

The inflow side of the backflow prevention damper of the handling box 5 communicates with the ridge duct 4, and one of the outflow sides of the flow path switching damper 8 is connected to the upper end of the falling duct 10. The lower end of the falling duct 10 is opened to an air circulation space 13 between the heat storage slab concrete 11 as a heat storage / radiation part and the floor panel 12, and a floor outlet 14 from the air circulation space 13 to the room is provided.

As described above, the inflow side of the backflow prevention damper 6 of the handling box 5 is connected to the ridge duct 4, and the inflow side of the backflow prevention damper 6 is connected to the circulation duct 19 that opens to the room through a ceiling or the like. The backflow prevention damper 6 is configured as a flow path switching damper for switching the flow path between the ridge duct 4 side and the circulation duct 19 side.
If the room provided with the suction port 20 for opening the circulation duct 19 is on the second floor, the room on the first floor where the floor panel 12 provided with the floor outlet 14 to the room has a blow-through structure and air Is desired to flow freely.

In the handling box 5, a hot water removing coil 15 is provided between the backflow prevention damper 6 and the fan 7,
The hot water coil 15 is connected to a hot water storage tank 17 by a circulation pipe 16, and a hot water supply boiler 18 for additional heating is provided in the hot water storage tank 17, and a hot water supply pipe 21 connected to a bath, a washroom, and a kitchen is provided.
Connect.

[0008] In this manner, the roof plate 1, which is a metal plate heated by sunlight, warms the outside air entering the air flow path 2,
This warmed air rises along the roof slope. Then, the heated air is collected in the ridge duct 4 and then enters the handling box 5 by the fan 7, flows down from the handling box 5 into the falling duct 10, and circulates air between the heat storage soil concrete 11 and the floor panel 12. Enter space 13. In this air circulation space 13, the heated air directly warms the floor below the floor via the floor panel 12, and the heat storage soil concrete 11
In this case, three types of heating action are performed: storing heat in the room and blowing the warm air directly from the floor outlet 14 into the room.

On the other hand, the water fed from the hot water storage tank 17 through the circulation pipe 16 is heated by the hot water collecting coil 15,
Hot water is stored in a hot water storage tank 17, whereupon it is reheated as necessary by a hot water supply boiler 18 for additional heating and supplied to various places from a hot water supply pipe.

[0010] By the way, in a high temperature season such as summer when heating is not required, it is necessary to discharge all the heated air heated by the roof panel 1 to the outside air and discard it. In this case, if the falling duct 10 which is one of the outflow sides is closed by the flow path switching damper 8 and the exhaust duct 9 which is the other one of the outflow sides is opened, the heated air is discharged from the handling box 5 through the exhaust duct. Discarded outside through 9. Since the heating air passes through the handling box 5 to heat the hot water removing coil 15, it is ensured that hot water can be obtained by using solar heat even at high temperatures such as in summer.

[0011]

The falling duct 10 is a circular pipe made of a heat insulating material such as glass wool, and a factory-made one is to be carried into the site. It was such a thing.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to easily assemble into a tubular shape at the site, and to be folded at the time of carry-in so that it does not become bulky and to reduce the overall cost. It is to provide a falling duct that can be suppressed.

[0013]

According to the present invention, in order to achieve the above object, first, the inside has a first heat-insulating layer having high heat resistance, and the outside has a lower heat-resistance than this first heat-insulating layer. The gist is that a heat insulating flat plate formed on the second heat insulating layer is bent by a V-shaped notched groove to form a hinge portion, and the bent hinge portion is bent into a rectangular tube.

Second, the heat-insulating flat plate is formed by attaching an aluminum vapor-deposited film on the outer surface, and the V-shaped notch leaves a thin second heat-insulating layer having low heat resistance. Fourthly, a double-sided adhesive tape with release paper is previously disposed on one of the diagonal joining surfaces forming the V-shaped notch in the bending hinge portion. The main point is to make a difference.

According to the first aspect of the present invention, since the falling duct is formed by folding the heat insulating plate to form a hinge, the carrying for carrying in can be carried out in a folded state without being bulky. It can be easily assembled and formed into a cylindrical body on site. In addition, the heat-insulating plate is a composite layer of the first heat-insulating layer having high heat resistance and the second heat-insulating layer having low heat resistance. In addition, by incorporating an inexpensive second heat insulating layer, the overall cost can be reduced.

According to the second aspect of the present invention, since the V-shaped notch leaves the second heat-insulating layer having low heat resistance thin, the second heat-insulating layer can maintain airtightness. Further, since an aluminum vapor-deposited film is stuck on the outer surface thereof, the air-tightness is better, and even if the second heat insulating layer is soft, the aluminum vapor-deposited film prevents damage as a protective film.

According to the third aspect of the present invention, the joint surface at the bending hinge portion can be easily fixed with the double-sided adhesive tape, and as a result, the corners are sequentially hardened for assembling into the cylindrical body. Work can be done easily. In addition, since airtightness can be ensured in the fourth aspect, there is no problem in sealing even with such a double-sided adhesive tape.

According to the fourth aspect of the present invention, the members which can be assembled into a cylindrical shape can be further connected in the length direction by connecting them one another to form a duct having a required length. The degree of adhesion can also be increased by phasing.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a falling duct according to the present invention, FIG. 2 is a side view of the same in an expanded state before assembling, and FIG. 3 is a vertical sectional view after assembling.

One of the fields in which the present invention can be used is:
Although there is a solar system house as described in FIG. 5, this is the same as the above description and details are omitted, but the heated air from the solar heat collector is taken into the ridge duct 4 as a heat collection box, and Backflow prevention damper 6 and fan 7
And a flow path switching damper 8. One of the outflow sides of the flow path switching damper 8 is opened to the outside by an exhaust duct 9, and the other one of the outflow sides is a handling box 5 connected to the upper end of a falling duct 10. This building duct and 4 and heat storage
It is disposed in the middle of a duct (including the falling duct 10) connecting the air flow space 13 between the heat storage soils as the heat radiating section, and a floor outlet 14 from the air flow space 13 between the heat storage soils to the room is provided. Things.

In the falling duct 10 of the present invention, the heat-insulating flat plate 26 is formed by bending a V-shaped groove 27 to form a hinge portion 28, and the bent hinge portion 28 is formed into a rectangular tube.

The heat insulating flat plate 26 has a portion on the inside which is folded when it is bent, and a second heat insulating layer 29a which has a portion on the outside which is lower in heat resistance than the first heat insulating layer 29a. It is formed on the heat insulating layer 29b.

The first heat insulating layer 29a and the second heat insulating layer 29b are both made of highly foamed polyethylene obtained by irradiating polyethylene with an electron beam and foaming the first heat insulating layer 29a. If so, the second heat insulating layer 29b is a foamed product of about 5 to 10 times and is relatively inexpensive as compared with the first heat insulating layer 29a.

The first heat insulating layer 29a and the second heat insulating layer 29
b: Sekisui Chemical Co., Ltd. product name "Softlon" N
F, "Softlon" S is preferable, and the lamination can be performed by welding at the time of forming a flat plate.

An aluminum vapor-deposited polyester film 30 is attached to the outer surface of the second heat insulating layer 29b, and this is applied by using an extruded resin as a bonding material by heat-sealing or extruded resin.

As the heat insulating plate 26, the first heat insulating layer 29a,
A V-shaped notch is formed in a factory product of a laminated board of the aluminum heat-insulating layer 29b and the aluminum-evaporated polyester film 30 to form the groove 27. The V-shaped notch is formed by the second heat-insulating layer 29b having low heat resistance. Was made to a depth until it was left thin. Thus, the hinge portion 28 is bent by the groove 27 in the V-shaped notch.
Is formed and divided into four plates. Furthermore, the ends of the plates located on the left and right form a step for the tenon 31.

A double-sided adhesive tape 32 with release paper is previously disposed on one of the obliquely joined surfaces forming the V-shaped notch in the folding hinge portion 28.
Similarly, a double-sided adhesive tape 32 with release paper is provided in advance on one of the steps for the tenon 31.

In this manner, if the one shown in FIG. 2 is folded to the opposite side, it can be transported as a superposed plate without being bulky, and it is assembled at a construction site.

The assembly is sequentially folded at the folding hinge portion 28, and the ends are joined by a tenon 31. At the time of bending, the release paper of the double-sided adhesive tape 32 is peeled off, and the bonding surface is easily fixed with the double-sided adhesive tape 32. As a result, corners can be sequentially solidified for assembling into a cylindrical body, and the work can be performed easily. Further, since the bent hinge portion 28 has the second heat-insulating layer 29b left thin, airtightness can be ensured, and there is no problem in sealing the corners of the rectangular cylindrical body even with such a double-sided adhesive tape 32. .

As shown in FIG. 4, the lengthwise connection of the descending duct 10 assembled in a cylindrical shape is fitted by a phase difference 33 formed by a step 33a for the male part and a step 33b for the female part. . This enhances mutual adhesion. Further, the joining portion of the phase jig 33 can be sealed from the outside with an aluminum foil tape.

Although the above embodiment has described the case where the falling duct 10 is formed in a substantially square rectangular cylinder, the falling duct 10 may be formed in a rectangular shape. What is necessary is just to change the length of the four plates divided by changing the interval of 28.

In addition, instead of the tenon 31, the ends of the left and right heat insulating flat plates 26 may be formed by other joining structures such as jointing or diagonal cutting.

Although the above embodiment has been described as an example used in a solar system house, the falling duct of the present invention is not limited to this, and can be applied in all fields of heating and cooling.

[0034]

As described above, the falling duct according to the present invention can be easily assembled into a tubular shape on site, and is not bulky because it is folded at the time of loading, and the overall cost is kept low. Is what you can do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a falling duct of the present invention.

FIG. 2 is a side view of an embodiment of the falling duct of the present invention in an expanded state before assembly.

FIG. 3 is a longitudinal sectional plan view after assembling showing one embodiment of the falling duct of the present invention.

FIG. 4 is a longitudinal sectional side view showing a connection portion in a length direction of a falling duct.

FIG. 5 is a vertical sectional side view showing an outline of a solar system house.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Roof board 2 ... Air flow path 3 ... Outside air intake 4 ... Building duct 5 ... Handling box 6 ... Backflow prevention damper 7 ... Fan 8 ... Flow path switching damper 9 ... Exhaust duct 10 ... Falling duct 11 ... Thermal storage clay concrete 12 ... floor panel 13 ... air circulation space 14 ... floor outlet 15 ... hot water coil 16 ... circulation pipe 17 ... hot water storage tank 18 ... hot water boiler 19 ... circulation duct 20 ... suction port 21 ... hot water supply pipe 22 ... behind the shed 23 ... Glass 24 ... insulation layer 26 ... insulation flat plate 27 ... groove 28 ... bending hinge part 29a ... first insulation layer 29b ... second insulation layer 30 ... aluminized polyester film 31 ... tenon 32 ... double-sided adhesive tape 33 ... phase Box 33a: Step for male part 33b: Step for female part

Claims (4)

[Claims] 1. A groove formed by cutting a heat insulating flat plate having an inner side formed on a first heat insulating layer having high heat resistance and an outer side formed on a second heat insulating layer having lower heat resistance than the first heat insulating layer in a V-shape. A falling duct formed by forming a bent hinge portion and bending the bent hinge portion into a rectangular tube. 2. The falling duct according to claim 2, wherein the heat-insulating flat plate is formed by attaching an aluminum vapor-deposited film on the outer surface, and the V-shaped notch leaves a thin second heat insulating layer having low heat resistance. . 3. A double-sided adhesive tape with release paper is provided in advance on one of the obliquely joined surfaces forming a V-shaped notch in the folding hinge portion. The falling duct according to any one of the above. 4. The falling duct according to claim 1, wherein the connecting portions in the longitudinal direction are formed in a phase.