WO2022049829A1 - エアダクト - Google Patents
エアダクト Download PDFInfo
- Publication number
- WO2022049829A1 WO2022049829A1 PCT/JP2021/017175 JP2021017175W WO2022049829A1 WO 2022049829 A1 WO2022049829 A1 WO 2022049829A1 JP 2021017175 W JP2021017175 W JP 2021017175W WO 2022049829 A1 WO2022049829 A1 WO 2022049829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air duct
- pipe
- air
- synthetic material
- material sheet
- Prior art date
Links
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 40
- 239000000470 constituent Substances 0.000 claims description 37
- 238000005452 bending Methods 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 8
- 241000239290 Araneae Species 0.000 claims description 4
- 239000012209 synthetic fiber Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 230000001143 conditioned effect Effects 0.000 description 38
- 238000009826 distribution Methods 0.000 description 28
- 238000004378 air conditioning Methods 0.000 description 11
- 238000009423 ventilation Methods 0.000 description 10
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
Definitions
- the present invention relates to a soft air duct.
- Patent Document 1 discloses this kind of soft duct.
- the sock duct of Patent Document 1 is configured to include a nonwoven fabric layer and a glass cloth layer separably arranged on the inner or outer periphery of the nonwoven fabric layer.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air duct capable of suppressing buckling, maintaining a suitable shape, and reducing friction loss during blowing.
- this air duct has a tubular portion for allowing air from the air conditioner to flow.
- the tubular portion is composed of a synthetic material sheet.
- the bending stiffness of the synthetic material sheet is 1 ⁇ 10 -5 N ⁇ m 2 or more and 1 ⁇ 10 -3 N ⁇ m 2 or less in a width of 38 mm.
- the air duct can be bent, which facilitates storage and transportation, and the constant stiffness makes it possible to maintain a good tubular shape for allowing air to flow during operation.
- the synthetic material sheet has a ventilation waterproof property, a thermal conductivity of 0.1 w / mk or less, a mass per unit area of 100 g / m 2 or less, and a thickness of 0.2 mm or less. It is preferable to have.
- the synthetic material sheet is a sheet in which elongated fibers having a thickness of 0.5 ⁇ m or more and 10 ⁇ m or less are randomly entangled by binding synthetic fibers by heat and pressure, and are laminated in a spider web shape. Is preferable.
- an air duct that is resistant to bending can be formed, and the durability of the air duct can be improved.
- the air duct has the following configuration. That is, it is provided with a plurality of straight pipe portions and curved pipe portions.
- the straight pipe portions or the straight pipe portion and the bent pipe portion are detachably connected by a wire fastener.
- a blowout portion is formed in at least a part of the straight pipe portion.
- the air duct has the following configuration. That is, the blowout portion includes a plurality of unit blowout portions composed of a plurality of blowout holes.
- the plurality of unit blowing portions are arranged side by side at intervals from each other in the longitudinal direction of the straight pipe portion.
- the air duct has the following configuration. That is, this air duct includes a main body portion and an accommodating portion.
- the main body is formed of the synthetic material sheet, and air from an air conditioner flows inside.
- the accommodating portion is formed by the synthetic material sheet along the extending direction of the main body portion.
- the accommodating portion can accommodate an elongated strength member and is located at the top of the main body portion when the main body portion is used.
- this air duct has the following configuration. That is, this air duct includes a plurality of unit ducts.
- the unit duct is formed in a cylindrical shape by the synthetic material sheet.
- the unit ducts are detachably connected to each other by a resin wire fastener.
- the resin wire fastener is flameproofed.
- the air duct can be disassembled and stored when not in use, so that storage space can be significantly saved, and by using a resin wire fastener, the occurrence of dew condensation can be suitably suppressed. Can be done.
- the resin fastener is also less likely to burn.
- this air duct has the following configuration. That is, this air duct includes a main pipe and a loop path forming pipe.
- the main pipe and the loop path forming pipe are formed of the synthetic material sheet.
- the main pipe is formed in a straight line.
- One end of the loop path constituent pipe is connected in the longitudinal direction of the main pipe so that a part thereof is located on an extension line of the main pipe.
- the other end of the loop path forming pipe is connected in the radial direction of the main pipe so that the other part is perpendicular to the longitudinal direction of the main pipe.
- the main pipe and the loop path forming pipe form a P-shaped duct.
- the dynamic pressure of the air flowing in the air duct causes the air flow introduced from the main pipe to be located on the extension line of the main pipe rather than the other loop path components that are perpendicular to the longitudinal direction of the main pipe. Since it becomes dominant in the loop path forming tube portion, the pressure equalizing state in the loop path forming tube can be easily achieved.
- the schematic diagram which shows the overall structure of the air-conditioning system provided with the air duct which concerns on 1st Embodiment of this invention.
- the figure which shows an example of the measurement of the bending stiffness of a sheet.
- the perspective view which shows the structure of the main pipe.
- the perspective view which shows the structure of the connecting pipe.
- the plan view which shows the structure of an air duct.
- the perspective view which shows the example of the connection of a straight pipe part and a curved pipe part.
- the partial perspective view which shows the structure of the loop path structure tube.
- A A partial perspective view showing the configuration of a straight pipe portion with a hole.
- (B) Explanatory drawing which shows the structure of the straight pipe part with a hole.
- A A partial perspective view showing a state in which a bar material is passed through a housing portion.
- B A partial perspective view showing a state in which the string is passed through the accommodating portion. The perspective view which shows the air duct of 2nd Embodiment.
- FIG. 1 is a schematic view showing an overall configuration of an air conditioning system 100 including an air duct 2 according to the first embodiment of the present invention.
- upstream and downstream mean upstream and downstream in the direction in which conditioned air flows.
- the air conditioning system 100 shown in FIG. 1 can provide the air from the air conditioner 1 (that is, the air conditioning air) to the target space via the air duct 2.
- the use of the air conditioning system 100 is not limited, but it is preferably used in a situation where short-term air conditioning needs arise and motivated installation / removal of air conditioning equipment is desired, especially in a facility without fixed air conditioning equipment. be able to. Specific examples include cases where temporary tents, gymnasiums, etc. are used for events or disaster evacuation.
- the air conditioning system 100 mainly includes an air conditioner 1 and an air duct 2.
- the air conditioner 1 is driven by, for example, the electric power generated by the generator shown in the figure.
- This generator is composed of, for example, a diesel engine or the like.
- the air conditioner 1 can introduce outside air and release conditioned air (that is, air whose air quality is adjusted to a predetermined quality including at least one of temperature, humidity, air cleanliness, and the like).
- the air conditioner 1 can be, for example, a known air-cooled heat pump type air conditioner equipped with a compressor, a heat exchanger, or the like.
- the air duct 2 constitutes a path for flowing the conditioned air released by the air conditioner 1 to the target space.
- the air duct 2 is formed of, for example, a sheet made of synthetic fibers such as 100% polyethylene (synthetic material sheet). This sheet is formed, for example, by laminating continuous ultrafine elongated fibers having a thickness of 0.5 ⁇ m or more and 10 ⁇ m or less in a spider web shape and binding them by heat and pressure. That is, this sheet is formed by randomly entwining fibers.
- the air duct 2 thus formed has a very slight air permeability and also has a waterproof property.
- the water pressure resistance of the air duct 2 of this embodiment is 8 kPa or more. That is, the air duct 2 of the present embodiment does not allow water to pass through until the water pressure is about 8 kPa.
- the air duct 2 made of the above sheet has the properties that the thermal conductivity is 0.1 w / mk or less, the mass per unit area is 100 g / m 2 or less, and the thickness is 0.2 mm or less.
- the sheet of the fabric of the air duct 2 of the present embodiment is formed by stacking ultrafine fibers so as to have a certain thickness. Due to the overlap of the fibers, the surface of the sheet becomes smooth, the opacity is high, and the whiteness is extremely high.
- the fusion point between the fibers per unit area can be increased by applying pressure and heat to some extent in a state where the fibers are stacked.
- the bending stiffness of this sheet is 1 ⁇ 10 -5 N ⁇ m 2 or more and less than 1 ⁇ 10 -3 N ⁇ m 2 in a width of 38 mm.
- Bending stiffness can be obtained, for example, by a bending stiffness test as shown in FIG.
- a sheet with a weight of W (g / m 2 ) per unit area is cut with a width of b (cm), horizontally extended by a length L (cm) from the edge of the table, and the part corresponding to the edge of the table is projected from above. It is in the pressed state.
- a weight having a weight of F (g) may be attached to the tip of the overhanging sheet, but this weight may be omitted.
- b 3.8.
- the bending stiffness S can be calculated by the following formula.
- the air duct 2 formed by this sheet can be quickly inflated like a paper balloon when used, and can maintain a good inflated tubular shape. For example, even when an opening is formed at the tip of the duct and air flows into the duct toward the opening, the shape of the air duct 2 (particularly the shape on the tip side that is easily deformed by the air flow) is maintained well. And can blow air in a stable state. As a result, buckling of the air duct 2 can be suppressed, and the friction loss of the conditioned air can be reduced.
- the sheet of the fabric of the air duct 2 has a paper-like texture as described above, the inner wall of the air duct 2 becomes smooth, and the friction loss of the conditioned air can be further reduced at the time of blowing air.
- the air duct 2 thus formed can reduce the friction loss to the same extent as the sheet metal spiral duct having the same shape.
- the bending stiffness is smaller than 1 ⁇ 10 -5 N ⁇ m 2 , buckling, fluttering, etc. of the duct when air is flowed will increase, and the air flow will be hindered.
- the bending stiffness is 1 ⁇ 10 -3 N ⁇ m 2 or more, it becomes difficult to swell even if air is flowed, and handling becomes difficult.
- the shape retention is better than before, but when folded, etc. It is easy to get creases and wrinkles. Therefore, in the present embodiment, a regular pattern of sashiko is printed on the sheet on the surface corresponding to the outer peripheral surface of the air duct 2. With this pattern, it is possible to make the creases and the like inconspicuous in the appearance. However, the pattern may be a pattern other than the sashiko, and printing of the pattern may be omitted.
- the sheet forming the air duct 2 of the present embodiment is flameproofed on at least one of its two surfaces. As a result, flame retardancy is realized. Further, in the air duct 2 of the present embodiment, the wire fastener 9 described later for connecting the parts of the air duct 2 formed of the sheet is also flameproofed.
- the air duct 2 of the present embodiment is composed of a main pipe 3 and a loop path constituent pipe 4.
- the main pipe 3 is used to connect the air conditioner 1 and the loop path constituent pipe 4.
- the main pipe 3 guides the conditioned air from the air conditioner 1 to the loop path constituent pipe 4.
- the main tube 3 is formed in a straight tubular shape, for example. That is, in the main pipe 3, both ends in the longitudinal direction are open.
- the main pipe 3 includes a first joint portion 31 formed on one side in the longitudinal direction and a second joint portion 32 formed on the other side in the longitudinal direction.
- the first joint portion 31 is provided at the upstream end portion of the main pipe 3 in the direction in which the conditioned air flows.
- the first joint portion 31 includes a string body 31a and a string stopper 31b, and the string body 31a is formed in a purse-like shape stretched along the outer periphery of the main pipe 3.
- the string body 31a passes through a string passage formed along the outer circumference of the main pipe 3 at one end of the main pipe 3 in the longitudinal direction. As shown in FIG. 3, the vicinity of both ends of the string body 31a that has passed through the string passage and orbited the main pipe 3 is collectively fixed by the string stopper 31b.
- the effective length of the string body 31a can be adjusted by adjusting the position where the string stopper 31b binds the string body 31a.
- the second joint portion 32 is provided at the downstream end portion of the main pipe 3 in the direction in which the conditioned air flows.
- the second joint portion 32 is formed by providing an element 91 of a resin wire fastener 9 so as to go around the main pipe 3.
- the slider 92 may be provided so as not to be removable from any of the two elements 91, or may be provided so as to be removable from any of the elements 91.
- the main pipe 3 may be composed of a plurality of straight pipe portions (unit ducts) 61, for example, as shown in FIG.
- the straight pipe portions 61 are connected to each other by a resin wire fastener 9. Thereby, the length of the main pipe 3 can be easily adjusted as needed.
- the main pipe 3 is connected to the loop path constituent pipe 4 via the connecting pipe 5.
- the connecting pipe 5 guides the conditioned air from the main pipe 3 into the loop path forming pipe 4.
- the connecting pipe 5 connects the main pipe 3 and the loop path forming pipe 4.
- the connecting pipe 5 is formed in a substantially T shape and has a first distribution unit 51 and a second distribution unit 52.
- the connecting pipe 5 is integrally formed of the above-mentioned synthetic material sheet.
- the first distribution unit 51 connects the main pipe 3 and the loop path constituent pipe 4.
- the first distribution unit 51 guides the conditioned air from the main pipe 3 to the loop path constituent pipe 4.
- the first distribution unit 51 is formed in a straight tubular shape through which conditioned air flows straight during ventilation.
- the first distribution section 51 is arranged along the longitudinal direction of the main pipe 3 (that is, the direction in which the conditioned air flows in the main pipe 3).
- the longitudinal direction of the first distribution section 51 coincides with the longitudinal direction of the main pipe 3.
- a first opening 51a is formed at the end of the first distribution section 51 that can be placed near the main pipe 3.
- a second opening 51b is formed at the end of the first distribution section 51 on the side far from the main pipe 3.
- this first opening 51a is the inlet of the conditioned air in the first distribution unit 51.
- the second opening 51b is an outlet for conditioned air in the first distribution section 51.
- the conditioned air flows in the order of the first opening 51a, the second opening 51b, and the loop path forming pipe 4 with almost no change in the direction thereof.
- the second opening 51b is formed smaller than the first opening 51a of the first distribution section 51.
- the first opening 51a is formed in 300 mm ⁇
- the second opening 51b is formed in 215 mm ⁇ .
- the cross-sectional area of the first opening 51a of the present embodiment is substantially the same as the cross-sectional area of the main pipe 3.
- the cross-sectional area of the second opening 51b is substantially the same as the cross-sectional area of the loop path forming pipe 4 described later.
- the element 91 of the wire fastener 9 is provided along the contour of the opening in the first opening 51a and the second opening 51b of the first distribution section 51.
- the first opening 51a of the first distribution portion 51 is detachably connected to the downstream end portion (that is, the second joint portion 32) of the main pipe 3 via the wire fastener 9.
- the second opening 51b is detachably connected to the upstream end of the loop path forming pipe 4 via the wire fastener 9.
- the portion of the loop path constituent pipe 4 connected to the second opening 51b of the connecting pipe 5 is located on the extension line of the main pipe 3.
- the conditioned air in the main pipe 3 easily flows into the loop path forming pipe 4 due to the dynamic pressure thereof via the first distribution section 51 of the connecting pipe 5.
- the portion of the first distribution section 51 on the downstream side is provided with a resistance section 51c that increases the resistance when conditioned air flows.
- the resistance portion 51c is formed in a trapezoidal conical shape in which the cross-sectional area of the path through which the conditioned air flows gradually narrows toward the second opening 51b.
- the second distribution unit 52 is formed in a straight tubular shape through which conditioned air flows straight during ventilation.
- the loop route constituent pipe connection end 52a which is the end on the side opposite to the side connected to the first distribution unit 51, is connected to the end of the loop route constituent pipe 4. ..
- the element 91 of the wire fastener 9 is provided along the opening contour at the loop path forming pipe connecting end 52a.
- the loop path forming tube connecting end 52a is detachably connected to the end of the loop path forming tube 4 via the wire fastener 9 described above.
- the second distribution unit 52 is connected to the first distribution unit 51 on the upstream side of the resistance unit 51c.
- the influence of the flow of the conditioned air in the second distribution section 52 on the flow of the conditioned air in the resistance section 51c of the first distribution section 51 can be extremely reduced. That is, the conditioned air is suitably guided into the loop path forming pipe 4 by the resistance portion 51c.
- the portion of the loop route constituent pipe 4 connected to the loop route constituent pipe connecting end 52a is perpendicular to the first distribution section 51 (that is, the main pipe 3).
- the loop route constituent pipe 4 constitutes most of the loop-shaped path through which the conditioned air flows by connecting the second opening 51b of the connecting pipe 5 and the loop route constituent pipe connecting end 52a. At the time of use, the loop path constituent pipe 4 is attached to the ceiling of the space to be air-conditioned and discharges air-conditioned air to the space to be air-conditioned.
- the air duct configured by connecting the main pipe 3 to the loop path forming pipe 4 via the connecting pipe 5 is a P-shaped duct as shown in FIG. 1 or FIG. ..
- the flow of the conditioned air introduced into the portion of the loop path constituent pipe 4 located on the extension line of the main pipe 3 becomes dominant.
- the pressure equalizing state in the loop path forming tube 4 can be easily achieved.
- the loop path constituent pipe 4 is formed thinner than the main pipe 3.
- the diameter of the main pipe 3 is 300 mm ⁇
- the diameter of the loop path constituent pipe 4 is set to 215 mm ⁇ .
- the loop path constituent pipes 4 include a plurality of (four in the present embodiment) straight pipe portions (unit ducts) 61 and a plurality of (three in the present embodiment) curved pipe portions (three in the present embodiment). It is composed of a unit duct) 62.
- Elements 91 of the wire fastener 9 are provided along the opening contour at both ends of the straight pipe portion 61 and the curved pipe portion 62, respectively. That is, as shown in FIG. 6 and the like, the ends of the respective straight pipe portions 61 and the bent pipe portion 62 are attached to and detached from the other straight pipe portion 61, the bent pipe portion 62, or the connecting pipe 5 via the wire fastener 9. Can be connected as possible.
- the straight pipe portion 61 is formed in a straight tubular shape through which conditioned air flows straight during ventilation.
- the straight pipe portions 61 may have different lengths and may be appropriately selected and used according to the shape of the air duct 2 to be formed.
- the straight pipe portion 61 constituting the loop path constituent pipe 4 of the present embodiment is formed with a blowout hole 70 for discharging conditioned air into the space to be conditioned.
- the straight pipe portion 61 in which the blowout hole 70 is formed is referred to as a straight pipe portion 63 with a hole.
- the straight pipe portion 63 with a hole has a plurality of unit blowing portions 7 formed at the lower portion in a state of being attached to the ceiling portion of the space to be air-conditioned.
- the plurality of unit blowing portions 7 are arranged with a predetermined first interval L1 along the longitudinal direction of the straight pipe portion 63 with holes.
- the plurality of unit blowout portions 7 form a blowout portion of the straight pipe portion 63 with a hole.
- the unit blowout portion 7 closest to the end portion of the straight pipe portion 63 with a hole is arranged with a predetermined second interval L2 from the end portion of the straight pipe portion 63 with a hole.
- the second interval L2 may have the same length as the first interval L1 described above, or may have a different length.
- Each unit blowing unit 7 has a plurality of (three in this embodiment) blowing holes 70.
- the plurality of outlet holes 70 are arranged at equal intervals on the peripheral wall of the straight pipe portion 63 with holes.
- the distance between the plurality of outlet holes 70 can be determined, for example, so as to be positioned with a predetermined distance D1 when the outlet holes 70 are projected onto a plane.
- the present invention is not limited to this, and for example, a plurality of blowout holes may be arranged in a staggered pattern or arranged so as to form an arbitrary pattern as a whole.
- the curved pipe portion 62 is formed in an arc shape in a plan view.
- the bent pipe portion 62 is used in a place where it is necessary to change the direction in which the conditioned air flows. By passing through the curved pipe portion 62, the direction in which the conditioned air flows is changed by 90 °.
- the present invention is not limited to this, and the arc angle of the curved pipe portion 62 can be arbitrarily changed as needed.
- Each of the straight pipe portion 61 and the bent pipe portion 62 has a loop path configuration in which the ends thereof are connected to each other by a resin wire fastener 9 to form most of the loop as shown in FIG. 1 or FIG. It constitutes a tube 4.
- the loop path constituent pipe 4 of the present embodiment is formed by combining a plurality of parts (straight pipe portion 61 and bent pipe portion 62), the number of parts (straight pipe portion 61 and bent pipe portion 62) can be increased or decreased.
- the loop path forming tube 4 having a different shape can be configured. This makes it possible to flexibly respond to the shape and size of the target space for air conditioning.
- a straight pipe portion 61 in which the blowout hole 70 is not formed can also be used.
- the straight pipe portion 61 in which the blowout hole 70 is not formed is used in the portion where it is not necessary to discharge the conditioned air.
- the pressure loss due to the blowing out of the conditioned air can be eliminated, and the conditioned air can preferably flow into the loop path forming pipe 4 downstream.
- the air duct 2 of the present embodiment is a main body portion (cylindrical portion) composed of a main pipe 3, a loop path constituent pipe 4, and a connecting pipe 5 connecting the main pipe 3 and the loop route constituent pipe 4 as described above.
- a storage unit 8 is provided.
- the accommodating portion 8 is used for wiring, fixing, etc. of the air duct 2 (main body portion, etc.). As shown in FIGS. 3, 6 and the like, the accommodating portion 8 is formed on the main pipe 3 and the loop path forming pipe 4.
- the accommodating portion 8 is made of the same material as the above-mentioned synthetic material sheet forming the main body portion of the air duct 2. As a result, the management of materials at the time of manufacturing can be simplified and the cost can be reduced.
- the accommodating portion 8 is fixed to the main pipe 3 and the loop route constituent pipe 4 by being sewn integrally with the main pipe 3 and the loop route constituent pipe 4 at the time of forming the main pipe 3 and the loop route constituent pipe 4. ..
- the accommodating portion 8 is formed in a hollow shape, and as shown in FIG. 9A, a strength member such as a bar 82 can be inserted and accommodated.
- a strength member such as a bar 82 can be inserted and accommodated.
- the accommodating portion 8 can be cut at an arbitrary position in the longitudinal direction, for example, as shown in FIG. 6 or FIG. 9 (b). Cutting can be easily performed using a general-purpose tool such as scissors. As a result, the place where the bar 82 is passed can be flexibly changed. Further, as shown in FIG. 9B, the string 83 can be passed through the cut one or a plurality of accommodating portions 8, and the air duct 2 can be attached to the ceiling portion of the air-conditioned space so as to be suspended by the string 83. ..
- the present invention is not limited to this, and for example, the air duct 2 may be attached to the ceiling portion of the air-conditioned space via attachment strings or the like on both sides in the longitudinal direction of the bar material 82 accommodated in the accommodating portion 8.
- cutting lines are printed at equal intervals on the accommodating portion 8 to serve as a guide for the cutting position.
- the cutting line can be omitted.
- the air duct 2 of the present embodiment has a tubular portion for allowing air from the air conditioner to flow.
- the tubular part is composed of a synthetic material sheet.
- the bending stiffness of the synthetic material sheet is 1 ⁇ 10 -5 N ⁇ m 2 or more and 1 ⁇ 10 -3 N ⁇ m 2 or less in a width of 38 mm.
- the air duct 2 can be bent, which facilitates storage and transportation, and also has a certain stiffness, so that the tubular shape for allowing air to flow can be well maintained during operation.
- the synthetic material sheet has a ventilation waterproof property, a thermal conductivity of 0.1 w / mk or less, a mass per unit area of 100 g / m 2 or less, and a thickness of 0. It is .2 mm or less.
- the synthetic material sheet is laminated in a spider web shape by randomly entwining elongated fibers having a thickness of 0.5 ⁇ m or more and 10 ⁇ m or less due to the synthetic fibers being bonded by heat and pressure. It is a sheet that has been made.
- the air duct 2 that is resistant to bending can be formed, and the durability of the air duct 2 can be improved.
- the air duct 2 of the present embodiment includes a plurality of straight pipe portions and curved pipe portions.
- the straight pipe portions or the straight pipe portion and the bent pipe portion are detachably connected by a wire fastener 9.
- a blowout portion is formed in at least a part of the straight pipe portion.
- the air duct 2 having a different shape can be easily formed by increasing or decreasing the number of parts (straight pipe portion and curved pipe portion). In addition, air can be appropriately blown out from the straight pipe portion.
- the blowout portion includes a plurality of unit blowout portions composed of a plurality of blowout holes.
- the plurality of unit blowing portions are arranged side by side at intervals from each other in the longitudinal direction of the straight pipe portion.
- the air duct 2 of the present embodiment includes a main body portion (main pipe 3, loop path constituent pipe 4, and connecting pipe 5 connecting the main pipe 3 and the loop route constituent pipe 4), and an accommodating portion 8. .
- the main body is formed of a synthetic material sheet, and air from the air conditioner flows inside.
- the accommodating portion 8 is formed by a synthetic material sheet along the extending direction of the main body portion.
- the accommodating portion 8 can accommodate the elongated rod 82, and is located at the top of the main body portion when the main body portion is used.
- At least one of both surfaces of the synthetic material sheet is flameproofed.
- the air duct 2 of the present embodiment includes a plurality of unit ducts (straight pipe portion 61 and / or curved pipe portion 62).
- the unit duct is formed in a cylindrical shape by a synthetic material sheet.
- the unit ducts are detachably connected to each other by a resin wire fastener 9.
- the resin wire fastener 9 is flameproofed.
- the air duct 2 can be disassembled and stored when not in use, so that the storage space can be significantly saved, and by using the resin wire fastener 9, the occurrence of dew condensation is suitably suppressed. can do.
- the resin fastener is also less likely to burn.
- the air duct 2 of the present embodiment includes a main pipe 3 and a loop path constituent pipe 4.
- the main pipe 3 and the loop path constituent pipe 4 are formed of a synthetic material sheet.
- the main pipe 3 is formed in a straight line.
- One end of the loop path constituent pipe 4 is connected in the longitudinal direction of the main pipe 3 so that a part thereof is located on an extension line of the main pipe 3.
- the other end of the loop path constituent pipe 4 is connected in the radial direction of the main pipe 3 so that the other part is perpendicular to the longitudinal direction of the main pipe 3.
- the main pipe 3 and the loop path constituent pipe 4 form a P-shaped duct.
- the flow of air introduced from the main pipe 3 due to the dynamic pressure of the air flowing in the air duct 2 is an extension of the main pipe 3 as compared with other loop path components that are perpendicular to the longitudinal direction of the main pipe 3. Since it becomes dominant in the loop path forming tube 4 portion located on the line, the pressure equalizing state in the loop path forming tube 4 can be easily achieved.
- FIG. 10 is a plan view showing the air duct 2a of the second embodiment.
- the same reference numerals may be given to the drawings for the same or similar members as those in the above-described embodiment, and the description may be omitted.
- the loop path forming pipe 4a does not form a loop path but forms an end path.
- the loop path forming pipe 4a is composed of, for example, a plurality of (two in the example of FIG. 10) straight pipe portions with holes 63 and an end pipe 64.
- the end pipe 64 has a shape in which one end is formed into a round tubular shape so as to be connectable to the straight pipe portion 63 with a hole, and the other end is closed.
- the end pipe 64 is connected to the straight pipe portion 63 with a hole via a wire fastener 9.
- the air duct 2a of the present embodiment is formed of a sheet having a predetermined stiffness (hardness), buckling during blowing can be suppressed even when the air is blown in the shape shown in FIG. 10, and the shape is good. Can be maintained. As a result, the friction loss of the conditioned air can be reduced, and the ventilation efficiency can be improved.
- the connecting pipe 5 may be omitted, that is, the loop path forming pipe 4a may be directly connected to the main pipe 3.
- the air duct 2 may be formed in a square tube instead of a round tube.
- the bent pipe portion 62 may be provided with a blowout portion.
- the bar 82 may be provided in the accommodating portion 8 corresponding to only a part of the plurality of straight pipe portions 61 and / or the bent pipe portions 62 of the loop path constituent pipe 4.
- the main pipe 3, the connecting pipe 5, and the loop path forming pipe 4 may be connected to each other via a hook-and-loop fastener or the like instead of the wire fastener 9.
- a bellows-shaped serpentine pipe may be provided between the air-conditioned air discharge pipe 11 and the main pipe 3.
- the main pipe 3 is attached to the serpentine pipe.
- the main pipe 3 may be composed of a synthetic material sheet only at the downstream end portion, or may be entirely composed of a synthetic material sheet.
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- Duct Arrangements (AREA)
Abstract
Description
2 エアダクト
Claims (9)
- 空調機からの空気を流すための筒状部分を有するエアダクトであって、
前記筒状部分は合成材料シートから構成され、
前記合成材料シートの曲げこわさは、38ミリメートル幅で1×10-5N・m2以上、1×10-3N・m2未満であることを特徴とするエアダクト。 - 請求項1に記載のエアダクトであって、
前記合成材料シートは、通気防水性を有し、熱伝導率が0.1w/mk以下で、単位面積あたりの質量が100g/m2以下で、厚みが0.2mm以下であることを特徴とするエアダクト。 - 請求項1又は2に記載のエアダクトであって、
前記合成材料シートは、合成繊維が熱と圧力により結合されることにより、太さが0.5μm以上10μm以下である細長繊維がランダムに絡み合い、クモの巣状に積層したシートであることを特徴とするエアダクト。 - 請求項1から3までの何れか一項に記載のエアダクトであって、
複数の直管部及び曲がり管部を備え、
前記直管部同士又は前記直管部と前記曲がり管部は、線ファスナーにより着脱可能に接続され、
少なくとも一部の前記直管部には、吹出し部が形成されていることを特徴とするエアダクト。 - 請求項4に記載のエアダクトであって、
前記吹出し部は、複数の吹出し穴から構成される単位吹出し部を複数備え、
複数の前記単位吹出し部は、前記直管部の長手方向において、互いに間隔をあけて並べて配置されていることを特徴とするエアダクト。 - 請求項1から5までの何れか一項に記載のエアダクトであって、
前記合成材料シートにより形成され、内部に空調機からの空気が流れる本体部と、
前記合成材料シートにより、前記本体部の延びる方向に沿って形成された収容部と、
を備え、
前記収容部は、細長い強度部材を収容可能であり、前記本体部の使用時において、前記本体部の頂部に位置することを特徴とするエアダクト。 - 請求項1から6までの何れか一項に記載のエアダクトであって、
前記合成材料シートの両表面のうち少なくとも何れか一方に防炎加工が施されていることを特徴とするエアダクト。 - 請求項1から7までの何れか一項に記載のエアダクトであって、
前記合成材料シートにより筒状に形成された単位ダクトを複数備え、
前記単位ダクト同士は、樹脂製の線ファスナーにより互いに着脱可能に接続され、
前記樹脂製の線ファスナーには、防炎加工が施されていることを特徴とするエアダクト。 - 請求項1から8までの何れか一項に記載のエアダクトであって、
前記合成材料シートにより形成されたメイン管と、
前記合成材料シートにより形成されたループ経路構成管と、
を備え、
前記メイン管は、直線状に形成され、
前記ループ経路構成管は、その一部が前記メイン管の延長線上に位置するように、一端が前記メイン管の長手方向に接続され、
前記ループ経路構成管は、他の一部が前記メイン管の長手方向と垂直になるように、他端が前記メイン管の径方向に接続され、
前記メイン管と前記ループ経路構成管は、P字状のダクトを形成していることを特徴とするエアダクト。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11141964A (ja) * | 1997-11-12 | 1999-05-28 | Nippon Polychem Kk | 送風管 |
JP2000220769A (ja) * | 1999-02-04 | 2000-08-08 | Hagihara Industries Inc | 風管用ラミネートクロスおよびその製造方法 |
JP2001174035A (ja) * | 1999-12-21 | 2001-06-29 | Kyoritsu Air Tech Inc | フレキシブルダクト |
JP2008150540A (ja) * | 2006-12-20 | 2008-07-03 | Toyobo Co Ltd | ダクト |
JP2016125761A (ja) * | 2014-12-27 | 2016-07-11 | フジモリ産業株式会社 | ソックダクト |
-
2021
- 2021-04-30 WO PCT/JP2021/017175 patent/WO2022049829A1/ja active Application Filing
- 2021-04-30 JP JP2022546887A patent/JPWO2022049829A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11141964A (ja) * | 1997-11-12 | 1999-05-28 | Nippon Polychem Kk | 送風管 |
JP2000220769A (ja) * | 1999-02-04 | 2000-08-08 | Hagihara Industries Inc | 風管用ラミネートクロスおよびその製造方法 |
JP2001174035A (ja) * | 1999-12-21 | 2001-06-29 | Kyoritsu Air Tech Inc | フレキシブルダクト |
JP2008150540A (ja) * | 2006-12-20 | 2008-07-03 | Toyobo Co Ltd | ダクト |
JP2016125761A (ja) * | 2014-12-27 | 2016-07-11 | フジモリ産業株式会社 | ソックダクト |
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