JP6760679B1 - Air conditioning duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loop forming connecting pipe and an air conditioning duct capable of suppressing the occurrence of turbulent flow in a portion connected to a main pipe connected to an air conditioner and a loop duct and easily achieving a pressure equalizing state in the loop duct. A connecting pipe 5 includes a first distribution unit 51 and a second distribution unit 52. The first distribution section 51 connects the main duct 3 and one end side of the loop forming pipe 6. The second distribution section 52 is branched from the first distribution section 51 and is connected to the other end side of the loop forming pipe 6. The first distribution section 51 is formed in a straight tubular shape. In the first distribution section 51, a first opening is formed at an end portion on the side connected to the main duct 3. In the first distribution section 51, a second opening is formed at the end on the side connected to the loop forming pipe 6. The first flow section 51 includes a resistance section 51c formed on the downstream side and narrowing as the cross section of the air flow path approaches the second opening. The second distribution section 52 is branched from a portion between the first opening and the resistance section 51c in the first distribution section 51. [Selection diagram] Fig. 1

Description

The present invention relates to a loop duct composed of a soft duct.

Conventionally, a loop duct that is attached to the ceiling of an air-conditioned space that requires air conditioning and allows air-conditioned air to flow has been known. Patent Document 1 discloses a loop duct system using this type of loop duct.

The loop duct system of Patent Document 1 has a configuration in which conditioned air from an indoor unit is branched in two different directions and supplied to the loop duct, which is composed of a flexible duct.

Japanese Unexamined Patent Publication No. 2014-043955

The configuration of Patent Document 1 is such that the harmonious air is evenly distributed in two directions at a portion where the harmonious air from the indoor unit (air conditioner) is branched (that is, a portion where the loop duct and the duct connected to the indoor unit are connected). The route layout is such that it is divided into two parts and supplied to the loop duct. However, even if a symmetrical branch is formed, it is practically difficult to distribute the conditioned air evenly and stably at the branch point due to unevenness of the air flow until reaching the branch point. Is. For this reason, there is room for improvement in that the pressure fluctuation in the loop duct is large and unevenness in the blowing of the conditioned air is likely to occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a loop forming connecting pipe and an air conditioning duct capable of easily achieving a pressure equalizing state in a loop duct.

Means and effects to solve problems

The problem to be solved by the present invention is as described above, and next, the means for solving this problem and its effect will be described.

According to the first aspect of the present invention, an air conditioning duct having the following configuration is provided. That is, this air conditioning duct is composed of a main pipe through which air from the air conditioner flows, a soft duct forming a loop-shaped path through which air flows, and a loop forming connecting pipe connecting the main pipe and the soft duct. It is composed. The loop-forming connecting pipe includes a first distribution unit and a second distribution unit. The first distribution section connects the main pipe and one end side of the soft duct. The second distribution section is branched from the first distribution section and is connected to the other end side of the soft duct. The first flow section is formed in a straight tubular shape through which air flows straight during ventilation. In the first distribution section, a first opening is formed at an end portion on the side connected to the main pipe. In the first distribution section, a second opening is formed at the end on the side connected to the soft duct. The first flow section includes a resistance section in which the cross section of the air flow path becomes narrower as it approaches the second opening. The second distribution section is branched from a portion between the first opening and the resistance section in the first distribution section. The loop-forming connecting pipe is formed in a T shape in which the second flow section is connected to the first flow section at a right angle. The soft duct is connected to the second opening. In the second distribution section, the soft duct is connected to an end portion on the side opposite to the side connected to the first distribution section. When air is flowed from the main pipe to the loop forming connecting pipe, the air flow in the soft duct is more than the flow of air in the direction introduced from the second flow portion of the loop forming connecting pipe into the soft duct. The flow of air in the direction from the first distribution section to the soft duct is dominant.

This allows air to be smoothly guided into the looped path. Then, the first flow section is configured as a linear path, and the resistance section is provided in the middle of the path, so that the flow velocity of the air flowing from the second opening to the soft duct can be increased. On the other hand, the second distribution section is arranged so as to branch at a right angle from the first distribution section. As a result, the air can flow to the soft duct so that the flow of air introduced from the first flow section (second opening) is more dominant than the flow in the opposite direction, so that the loop-shaped path is formed. The pressure equalizing state in the above can be easily achieved.

In the air conditioning duct , the first distribution section and the second distribution section are preferably made of a non-woven fabric made of synthetic fibers.

As a result, a lightweight loop-forming connecting tube can be easily formed.

The air conditioning duct preferably has the following configuration. That is, the first distribution section and the soft duct, and the second distribution section and the soft duct are detachably connected by a wire fastener. The downstream end of the main pipe is made of a soft material. The main pipe and the first distribution section are detachably connected by a wire fastener.

As a result, the loop-forming connecting pipe can be easily connected to the main pipe and the soft duct.

According to the second aspect of the present invention, an air conditioning duct having the following configuration is provided. That is, this air conditioning duct is composed of the loop forming connecting pipe, the main pipe through which air from the air conditioner flows, and the soft duct forming the loop-shaped path. The soft duct includes a straight pipe portion and a curved pipe portion. The straight pipe portion and the bent pipe portion are detachably connected to each other.

As a result, the soft duct can be easily formed, and the soft duct having a different shape can be easily formed by increasing or decreasing the number of parts (straight pipe portion and bent pipe portion).

The air conditioning duct preferably has the following configuration. That is, the soft duct is formed by connecting a plurality of the straight pipe portions and the bent pipe portion to each other. A blowout portion is formed in at least a part of the straight pipe portion.

As a result, soft ducts having different shapes can be easily formed by increasing or decreasing the number of parts (straight pipe portion and bent pipe portion). In addition, air can be appropriately blown out from the straight pipe portion.

The air conditioning duct preferably 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.

As a result, air can be blown out over a wide area.

The air conditioning duct preferably has the following configuration. That is, a reinforcing portion formed along the longitudinal direction thereof is fixed to the soft duct. The reinforcing portion is formed to be harder than the soft duct and thicker than the soft duct. The reinforcing portion is located at the top of the soft duct when the soft duct is used.

As a result, deformation of the soft duct in the longitudinal direction can be suppressed by providing the reinforcing portion.

In the air conditioning duct, it is preferable that the reinforcing portion is formed with a plurality of mounting portions arranged at equal intervals along the longitudinal direction thereof on the side opposite to the side fixed to the soft duct. ..

As a result, the soft duct can be easily attached.

The air conditioning duct preferably has the following configuration. That is, a joint portion capable of changing the opening area of the main pipe is formed at the upstream end portion of the main pipe. When the main pipe and the air conditioner pipe of the air conditioner are connected, the joint portion is located on the outer periphery of the air conditioner pipe, and the pipe wall of the main pipe and the outer circumference of the air conditioner pipe constituting the opening of the main pipe. The opening area of the main pipe is slightly deformed so as to be in close contact with the main pipe.

As a result, the main pipe can be easily attached to the air conditioner.

In the air conditioning duct, the soft duct has ventilation and waterproof properties, has a thermal conductivity of 0.1 w / mk or less, has a mass of 100 g / m ² or less per unit area, and has a thickness of 0.2 mm or less. It is preferably composed of a certain dough.

As a result, an extremely lightweight soft duct can be formed, and by having a ventilation waterproof property, the occurrence of dew condensation can be effectively suppressed.

The air conditioning duct preferably has the following configuration. That is, the soft duct is composed of a non-woven fabric in which synthetic fibers are bonded by heat and pressure. The non-woven fabric is a sheet-like material in which elongated fibers having a thickness of 0.5 μm or more and 10 μm or less are randomly entwined and laminated in a spider web shape.

As a result, a soft duct that is resistant to bending can be formed, and the durability of the soft duct can be improved.

The air conditioning duct preferably has the following configuration. That is, the main pipe and the loop-forming connecting pipe are made of a non-woven fabric made of the same material as the soft duct. When not in use, the main pipe, the soft duct, and the loop-forming connecting pipe can be folded and stored.

This can save a lot of storage space.

The schematic diagram which shows the overall structure of the air-conditioning system including the air-conditioning duct which concerns on one Embodiment of this invention. The perspective view which shows the structure of the main duct. The perspective view which shows the structure of the connecting pipe. The partial perspective view which shows the structure of the loop structure tube. A partial perspective view showing a state in which a bar material is passed through a mounting portion. (A) Partial perspective view showing the structure of a straight pipe portion with a hole. (B) Explanatory drawing which shows the structure of the straight pipe part with a hole.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an overall configuration of an air conditioning system 100 including an air conditioning duct 2 according to an embodiment of the present invention. In the following description, "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 supply air from the air conditioner 1 (that is, air conditioning air) to a target space via an air conditioning duct 2.

The application of the air conditioner system 100 is not limited, but it is particularly suitable for use in a situation where short-term air conditioning needs occur in a facility without fixed air conditioning equipment and agile installation / removal of the air conditioning equipment is desired. Can be done. Specific examples include cases where temporary tents, gymnasiums, etc. are used for events or disaster evacuation.

As shown in FIG. 1, the air conditioning system 100 includes an air conditioner 1 and an air conditioning 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 in which the air quality including at least one of temperature, humidity, air cleanliness, etc. is adjusted to a predetermined quality). The air conditioner 1 can be, for example, a known air-cooled heat pump type air conditioner including a compressor, a heat exchanger, and the like.

The air conditioning duct 2 constitutes a path for flowing the conditioned air discharged by the air conditioner 1 to a target space. The air conditioning duct 2 is formed of, for example, a non-woven fabric made of synthetic fibers such as 100% polyethylene. This non-woven fabric is formed, for example, by laminating continuous ultrafine elongated fibers having a thickness of 0.5 μm or more and 10 μm or less in a spider web shape and bonding them by heat and pressure. That is, this non-woven fabric is formed in the form of a sheet in which fibers are randomly entangled.

The air-conditioning duct 2 formed in this way has a very slight air permeability and also has a waterproof property. The water pressure resistance of the air conditioning duct 2 of this embodiment is 8 kPa or more. That is, the air conditioning duct 2 of the present embodiment does not allow water to pass through until the water pressure is about 8 kPa. Further, the air conditioning duct 2 made of the above-mentioned non-woven fabric 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.

As a result, the air conditioning duct 2 is extremely lightweight and can reduce the burden of transportation and the like, and can be folded when not in use, so that it is easy to handle in transportation and the like. Further, since the air conditioning duct 2 has ventilation and waterproof properties, dew condensation can be effectively prevented. Since the air conditioning duct 2 is made of non-woven fabric, advertisements, advertisements or handling information, patterns according to the interior of the facility to be used, and the like can be printed on the outer peripheral surface.

As shown in FIG. 1, the air conditioning duct 2 is mainly composed of a main duct 3 and a loop duct 4.

The main duct 3 is used to connect the air conditioner 1 and the loop duct 4. The main duct 3 guides the conditioned air from the air conditioner 1 to the loop duct 4. The main duct 3 is formed in a tubular shape, for example. That is, in the main duct 3, both ends in the longitudinal direction are open. The main duct 3 of the present embodiment is preferably formed to, for example, 250 mmΦ or more so that a predetermined amount of conditioned air can flow. However, it is not limited to this.

As shown in FIG. 2, the main duct 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 duct 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 is formed in a purse-like shape in which the string body 31a is stretched around the outer circumference of the main duct 3.

The string body 31a passes through a string passage formed along the outer circumference of the main duct 3 at one end of the main duct 3 in the longitudinal direction. As shown in FIG. 2, the vicinity of both ends of the string body 31a that has passed through the string passage and orbited the main duct 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 shorter the length of the string body 31a passing through the string passage of the main duct 3, the smaller the opening area of the main duct 3 on the side where the first joint portion 31 is provided. That is, by pulling the string body 31a so as to close the opening of the drawstring bag and then binding the string body 31a with the string stopper 31b, the opening of the main duct 3 can be maintained in a narrowed state.

As a result, after the first joint portion 31 is positioned on the outer periphery of the air conditioning air discharge pipe (air conditioning pipe) 11 of the air conditioner 1, the first joint portion 31 (air conditioning duct) can be easily operated by pulling the string body 31a. The opening of 2) and the outer periphery of the air conditioning air discharge pipe 11 can be brought into close contact with each other. As a result, the main duct 3 and the air conditioner 1 are connected. As described above, the connection work between the main duct 3 and the air conditioner 1 becomes extremely simple, and the labor of the work can be significantly reduced.

The second joint portion 32 is provided at the downstream end portion of the main duct 3 in the direction in which the conditioned air flows. The second joint portion 32 is formed by providing the element 91 of the wire fastener 9 so as to go around the main duct 3. By the slider 92, the element 91 provided in the second joint portion 32 and the element 91 provided in the first distribution portion 51, which will be described later, mesh with each other, whereby the main duct 3 and the loop duct 4 (first distribution unit) 51) is connected. The slider 92 may be provided non-removably for any one of the two elements 91, or may be provided so as to be removable from any element 91.

As shown in FIG. 1 and the like, the loop duct 4 is composed of a connecting pipe (loop forming connecting pipe) 5 and a loop forming pipe (soft duct) 6 forming a loop-shaped path.

The connecting pipe 5 is configured as a part of the loop duct 4, and guides the conditioned air from the main duct 3 to the loop forming pipe 6 (and thus in the loop duct 4). The connecting pipe 5 connects the main duct 3 and the loop forming pipe 6. As shown in FIG. 3, 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 non-woven fabric.

The first distribution section 51 connects the main duct 3 and the loop forming pipe 6. The first distribution unit 51 guides the conditioned air from the main duct 3 to the loop forming pipe 6. As shown in FIG. 3, the first distribution section 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 duct 3 (that is, the direction in which the conditioned air flows in the main duct 3).

The longitudinal direction of the first distribution section 51 coincides with the longitudinal direction of the main duct 3. A first opening 51a is formed at the end of the first distribution section 51 on the side closer to the main duct 3. A second opening 51b is formed at the end of the first distribution section 51 on the side far from the main duct 3.

From the viewpoint of the flow of conditioned air, the first opening 51a is an inlet of conditioned air in the first distribution section 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 forming pipe 6 with almost no change in the direction thereof.

In the first distribution section 51, the second opening 51b is formed smaller than the first opening 51a of the first distribution section 51. For example, when the first opening 51a is formed in 250 mmΦ, the second opening 51b is formed in 180 mmΦ. At the time of ventilation, 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 duct 3. Further, at the time of ventilation, the cross section of the second opening 51b is substantially the same as the cross section of the loop forming pipe 6 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 section 51 is detachably connected to the downstream end portion (that is, the second joint portion 32) of the main duct 3 via the wire fastener 9. The second opening 51b is detachably connected to the upstream end of the loop forming pipe 6 via the wire fastener 9.

As shown in FIG. 3, a resistance portion 51c for increasing the resistance when conditioned air flows is provided in the portion of the first distribution portion 51 on the downstream side. 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.

With this configuration, the flow velocity of the conditioned air passing through the resistance portion 51c gradually increases, so that the conditioned air quickly flows into the loop forming pipe 6 on the downstream side.

As shown in FIG. 3, the second distribution section 52 is formed in a straight tubular shape through which conditioned air flows straight during ventilation. In the second distribution unit 52, the loop configuration 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 configuration pipe 6.

Similar to the first opening 51a and the second opening 51b of the first distribution section 51, the element 91 of the wire fastener 9 is provided along the opening contour at the loop forming pipe connecting end 52a. The loop forming pipe connecting end 52a is detachably connected to the end of the loop forming pipe 6 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. As a result, 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 preferably guided into the loop forming pipe 6 by the resistance portion 51c.

As described above, the connecting pipe 5 of the present embodiment has a role of connecting the loop forming pipes 6 in a loop shape in order to form the loop duct 4, and introduces the conditioned air from the main duct 3 into the loop duct 4. Play a role.

The loop forming pipe 6 forms 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 forming pipe connecting end 52a. At the time of use, the loop forming pipe 6 is attached to the ceiling of the space to be air-conditioned and discharges conditioned air to the space to be air-conditioned.

The loop forming pipe 6 is preferably formed thinner than the main duct 3. For example, when the diameter of the main duct 3 is 300 mmΦ, the diameter of the loop forming pipe 6 is 215 mmΦ. However, it is not limited to this. As shown in FIG. 4, the loop forming pipe 6 is composed of a plurality of (five in the present embodiment) straight pipe portions 61 and a plurality of (three in the present embodiment) bent pipe portions 62. To.

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, the ends of the respective straight pipe portions 61 and the bent pipe portion 62 can be detachably connected to the other straight pipe portion 61, the bent pipe portion 62, or the connecting pipe 5 via the wire fastener 9.

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 loop duct 4 to be formed.

The loop constituent pipe 6 of the present embodiment is configured to include two types of straight pipe portions 61. One is a straight pipe portion 61 in which a blow-out hole 70 for discharging conditioned air to a space to be conditioned is not formed. The other is a straight pipe portion 61 in which a blowout hole 70 is formed. In the following description, 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.

As shown in FIG. 6, the holed straight pipe portion 63 has a plurality of unit blowout 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.

As shown in FIG. 6, it is preferable that 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. As shown in FIG. 6, for example, the plurality of blowout 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. However, the present invention is not limited to this, and for example, a plurality of outlet holes may be arranged in a staggered pattern, or may be arranged so as to form an arbitrary pattern as a whole.

The bent 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 bent pipe portion 62, the direction in which the conditioned air flows is changed by 90 °. However, the present invention is not limited to this, and the arc angle of the bent pipe portion 62 can be arbitrarily changed as needed.

Each of the straight pipe portion 61 and the bent pipe portion 62 is connected to each other by a wire fastener 9 to form a loop forming pipe 6 having a shape having most of the loops as shown in FIG. 1 and the like. Since the loop constituent pipe 6 of the present embodiment is formed by combining a plurality of parts (straight pipe portion 61 and bent pipe portion 62), it differs depending on the increase or decrease of the parts (straight pipe portion 61 and bent pipe portion 62). The loop forming tube 6 having a shape can be formed. As a result, it is possible to flexibly respond to the size of the target space for air conditioning.

In the loop forming pipe 6 of the present embodiment, as shown in FIG. 1, a straight pipe portion 61 having no blowout hole 70 is arranged in a portion close to the connecting pipe 5. As a result, the pressure loss due to the blowing out of the conditioned air can be eliminated in the portion close to the connecting pipe 5, and the conditioned air can preferably flow into the loop forming pipe 6 downstream.

In the loop configuration pipe 6 of the present embodiment, as shown in FIG. 1, the conditioned air flows one-way from the resistance portion 51c toward the second distribution portion 52. As a result, the conditioned air does not merge in the loop forming pipe 6, so that the pressure equalizing state in the loop forming pipe 6 can be easily achieved.

The loop forming pipe 6 of the present embodiment is provided with a reinforcing portion 8. The reinforcing portion 8 is formed in an elongated tape shape. The reinforcing portion 8 is provided along the loop forming pipe 6 so that the longitudinal direction thereof coincides with the longitudinal direction of the loop forming pipe 6. When the air conditioning duct 2 is attached to the space to be air-conditioned, the reinforcing portion 8 is located at the top of the loop forming pipe 6.

The reinforcing portion 8 is formed to be harder and thicker than the non-woven fabric constituting the loop forming pipe 6. The reinforcing portion 8 is formed of, for example, a woven fabric in which a pair of woven fabrics having warp threads and weft threads are opposed to each other and are connected by the weft threads. The reinforcing portion 8 is preferably formed of a woven fabric made of yarn having a certain hardness. As a result, the reinforcing portion 8 can have a constant hardness and can suppress deformation in the longitudinal direction to some extent.

The reinforcing portion 8 is fixed to the loop forming pipe 6 by being sewn integrally with the loop forming pipe 6 at the time of forming the loop forming pipe 6, for example. As a result, the elongated shape of the loop forming tube 6 can be easily maintained.

The reinforcing portion 8 is formed with a mounting portion 80 for mounting the loop forming pipe 6. As shown in FIG. 4, the mounting portion 80 is provided on the reinforcing portion 8 on the side opposite to the side fixed to the loop forming pipe 6. The mounting portions 80 are provided at predetermined intervals in the longitudinal direction of the reinforcing portion 8. In this way, the reinforcing portion 8 (that is, the loop forming pipe 6) can be attached to another member at a plurality of locations in the longitudinal direction of the reinforcing portion 8.

The mounting portion 80 is formed of a connecting thread 81 that is loosened so as to be curved at one end on one end in the width direction of the reinforcing portion 8. For example, in the mounting portion 80, at one end in the width direction of the reinforcing portion 8, the connecting yarn 81 passing through the tubular portion of the drawing formed from the two woven fabrics and the weft yarn constituting the reinforcing portion 8 is partially formed. It is formed by being exposed to.

It can be attached to the ceiling of the air-conditioned space via the attachment portion 80 by a attachment string or the like (not shown). However, the present invention is not limited to this, and for example, as shown in FIG. 5, by providing the bar member 82 having rigidity so as to weave the mounting portion 80, the bar member 82 is provided on both sides in the longitudinal direction via a mounting string or the like. It may be attached to the ceiling of the air-conditioned space.

When the air conditioner 1 is not operating, the shape of the loop duct 4 is not stable, for example, it is in a crushed state. When the air conditioner 1 starts operation, the conditioned air flows into the loop duct 4 through the main duct 3.

The conditioned air is introduced from the main duct 3 into the connecting pipe 5. At the beginning of the conditioned air flowing into the loop duct 4, the conditioned air flows into the loop forming pipe 6 from both ends due to the static pressure of the conditioned air generated in the connecting pipe 5.

However, the first distribution section 51 is straightly connected to the main duct 3, and one end of the loop forming pipe 6 is straightly connected to the first distribution section 51. On the other hand, the second distribution unit 52 to which the opposite end of the loop forming pipe 6 is connected is connected to the first distribution unit 51 in a different direction (specifically, at a right angle). Therefore, the air-conditioned air flowing from the first distribution section 51 to the loop forming pipe 6 is more dominant than flowing from the second distribution section 52 to the loop forming pipe 6 by the difference in dynamic pressure.

After that, the connecting pipe 5 and the loop forming pipe 6 are sufficiently inflated by static pressure. The resistance portion 51c arranged in the first circulation portion 51 increases the flow velocity of the conditioned air flowing from the second opening 51b to the loop forming pipe 6. Therefore, the flow in one direction (flow in the direction of the thick arrow in FIG. 1) in the loop forming pipe 6 is dominant over the flow in the opposite direction. By configuring the connecting pipe 5 so as to positively bias and distribute the conditioned air in this way, the pressure in the loop forming pipe 6 can be stably maintained. As a result, it is possible to maintain a good shape of the loop forming pipe 6 made of a soft material and to realize stable blowing of conditioned air.

As described above, the connecting pipe 5 of the present embodiment connects the main duct 3 through which air from the air conditioner 1 flows and the loop forming pipe 6 forming a loop-shaped path through which air flows. The connecting pipe 5 includes a first distribution unit 51 and a second distribution unit 52. The first distribution section 51 connects the main duct 3 and one end side of the loop forming pipe 6. The second distribution section 52 is branched from the first distribution section 51 and is connected to the other end side of the loop forming pipe 6. The first distribution section 51 is formed in a straight tubular shape through which air flows straight during ventilation. In the first distribution section 51, a first opening 51a is formed at an end portion on the side connected to the main duct 3. A second opening 51b is formed at the end of the first distribution section 51 on the side connected to the loop forming pipe 6. The first flow section 51 includes a resistance section 51c in which the cross section of the air flow path becomes narrower as it approaches the second opening 51b. The second distribution section 52 branches from a portion of the first distribution section 51 between the first opening 51a and the resistance section 51c.

This allows air to be smoothly guided into the looped path. Then, the first flow section 51 is configured as a linear path, and the resistance section 51c is provided in the middle of the path, so that the flow velocity of the air flowing from the second opening 51b to the loop forming tube 6 can be increased. As a result, air can flow through the loop forming tube 6 so that the flow in one direction is clearly dominant, so that the pressure in the loop-shaped path can be easily stabilized.

Further, in the connecting pipe 5 of the present embodiment, the first distribution unit 51 and the second distribution unit 52 are made of a non-woven fabric made of synthetic fibers.

Thereby, the lightweight connecting pipe 5 can be easily formed.

Further, in the connecting pipe 5 of the present embodiment, the first distribution section 51 and the loop forming tube 6 and the second distribution section 52 and the loop forming tube 6 are detachably connected by a wire fastener 9. The downstream end of the main duct 3 is made of a soft material. The main duct 3 and the first distribution section 51 are detachably connected by a wire fastener.

As a result, the connecting pipe 5 can be easily connected to the main duct 3 and the loop forming pipe 6.

The air conditioning duct 2 of the present embodiment is composed of a connecting pipe 5, a main duct 3 through which air from the air conditioner 1 flows, and a loop forming pipe 6 forming a loop-shaped path. The loop forming pipe 6 includes a straight pipe portion 61 and a bent pipe portion 62. The straight pipe portion 61 and the bent pipe portion 62 are detachably connected to each other.

As a result, the loop forming pipe 6 can be easily formed, and the loop forming pipe 6 having a different shape can be easily formed by increasing or decreasing the number of parts (straight pipe portion 61 and bent pipe portion 62).

Further, in the air conditioning duct 2 of the present embodiment, the loop forming pipe 6 is formed by connecting a plurality of straight pipe portions 61 and bent pipe portions 62 to each other. A blowout portion is formed in at least a part of the straight pipe portion 61.

As a result, the loop forming pipe 6 having a different shape can be easily formed by increasing or decreasing the number of parts (straight pipe portion 61 and bent pipe portion 62). In addition, air can be appropriately blown out from the straight pipe portion 61.

Further, in the air conditioning duct 2 of the present embodiment, the outlet portion includes a plurality of unit outlet portions 7 composed of a plurality of outlet holes 70. The plurality of unit blowout portions 7 are arranged side by side at intervals from each other in the longitudinal direction of the straight pipe portion 61.

As a result, air can be blown out over a wide area.

Further, in the air conditioning duct 2 of the present embodiment, the reinforcing portion 8 formed along the longitudinal direction thereof is fixed to the loop forming pipe 6. The reinforcing portion 8 is formed to be harder than the loop forming pipe 6 and thicker than the loop forming pipe 6. The reinforcing portion 8 is located at the top of the loop forming pipe 6 when the loop forming pipe 6 is used.

As a result, by providing the reinforcing portion 8, deformation of the loop forming pipe 6 in the longitudinal direction can be suppressed.

Further, in the air conditioning duct 2 of the present embodiment, the reinforcing portion 8 is provided with a plurality of mounting portions 80 arranged at equal intervals along the longitudinal direction thereof on the side opposite to the side fixed to the loop forming pipe 6. It is formed.

As a result, the loop forming pipe 6 can be easily attached.

Further, in the air conditioning duct 2 of the present embodiment, a joint portion capable of changing the opening area of the main duct 3 is formed at the upstream end portion of the main duct 3. When connecting the main duct 3 and the conditioned air discharge pipe 11 of the air conditioner 1, the joint portion is located on the outer periphery of the conditioned air discharge pipe 11, and the pipe wall of the main duct 3 forming the opening of the main duct 3 and the air conditioning. The opening area of the main duct 3 is slightly deformed so as to be in close contact with the outer periphery of the air discharge pipe 11.

As a result, the main duct 3 can be easily attached to the air conditioner 1.

Further, in the air conditioning duct 2 of the present embodiment, the loop constituent pipe 6 has ventilation and waterproof properties, has a thermal conductivity of 0.1 w / mk or less, has a mass of 100 g / m ² or less per unit area, and has a thickness. It is composed of a dough having a thickness of 0.2 mm or less.

As a result, the lightweight loop forming tube 6 can be formed, and by having the ventilation waterproof property, the occurrence of dew condensation can be effectively suppressed.

Further, in the air conditioning duct 2 of the present embodiment, the loop forming pipe 6 is made of a non-woven fabric in which synthetic fibers are bonded by heat and pressure. The non-woven fabric is a sheet-like material in which elongated fibers having a thickness of 0.5 μm or more and 10 μm or less are randomly entwined and laminated in a spider web shape.

As a result, the loop forming tube 6 that is resistant to bending can be formed, and the durability of the loop forming tube 6 can be improved.

Further, in the air conditioning duct 2 of the present embodiment, the main duct 3 and the connecting pipe 5 are made of a non-woven fabric made of the same material as the loop forming pipe 6. When not in use, each of the main duct 3, the loop forming pipe 6, and the connecting structure can be folded and stored.

This can save a lot of storage space.

Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

The air conditioning duct 2 may be formed in a square tubular shape instead of a round pipe.

The main duct 3 may be composed of a plurality of straight pipe portions 61 and curved pipe portions 62, as in the loop forming pipe 6.

The bent pipe portion 62 may be provided with a blowout portion.

The reinforcing portions 8 may be provided at only a plurality of locations along the longitudinal direction of the loop forming pipe 6 without being provided over the entire length of the loop forming pipe 6.

The main duct 3, the connecting pipe 5, and the loop forming pipe 6 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 duct 3. In this case, the main duct 3 is attached to the serpentine pipe.

Only the downstream end of the main duct 3 may be made of a soft material, or the main duct 3 may be made entirely of a soft material.

1 Air conditioner 2 Air conditioning duct 3 Main duct (main pipe)
5 Connecting pipe (loop forming connecting pipe)
51 1st distribution part 51a 1st opening 51b 2nd opening 51c Resistance part 52 2nd distribution part 6 Loop construction pipe (soft duct)

Claims (12)

It is an air conditioner duct composed of a main pipe for flowing air from an air conditioner, a soft duct forming a loop-shaped path for flowing air, and a loop forming connecting pipe for connecting the main pipe and the soft duct. hand,
The loop-forming connecting pipe
A first distribution section that connects the main pipe and one end side of the soft duct,
A second distribution unit that is branched from the first distribution unit and is connected to the other end side of the soft duct.
With
The first distribution section is formed in a straight tubular shape through which air flows straight during ventilation.
In the first distribution section, a first opening is formed at the end on the side connected to the main pipe.
In the first distribution section, a second opening is formed at the end on the side connected to the soft duct.
The first flow section includes a resistance section in which the cross section of the air flow path becomes narrower as it approaches the second opening.
The second distribution section is branched from a portion between the first opening and the resistance section in the first distribution section .
The loop-forming connecting pipe is formed in a T shape in which the second distribution unit is connected to the first distribution unit at a right angle.
The soft duct is connected to the second opening.
In the second distribution section, the soft duct is connected to an end opposite to the side connected to the first distribution section.
When air is flowed from the main pipe to the loop-forming connecting pipe, the air flow in the soft duct is more than the flow of air in the direction introduced from the second flow portion of the loop-forming connecting pipe into the soft duct. An air-conditioning duct characterized in that the flow of air in the direction introduced from the first distribution section into the soft duct is dominant . The air conditioning duct according to claim 1.
The first distribution section and the second distribution section are air conditioning ducts made of a non-woven fabric made of synthetic fibers. The air conditioning duct according to claim 1 or 2.
The first distribution section and the soft duct, and the second distribution section and the soft duct are detachably connected by a wire fastener.
The downstream end of the main pipe is made of a soft material
An air conditioning duct characterized in that the main pipe and the first distribution section are detachably connected by a wire fastener. The air conditioning duct according to any one of claims 1 to 3 .
The soft duct includes a straight pipe portion and a curved pipe portion.
An air conditioning duct characterized in that the straight pipe portion and the bent pipe portion are detachably connected to each other. The air conditioning duct according to claim 4.
The soft duct is formed by connecting a plurality of the straight pipe portion and the curved pipe portion to each other.
An air conditioning duct characterized in that a blowout portion is formed in at least a part of the straight pipe portion. The air conditioning duct according to claim 5.
The blowout portion includes a plurality of unit blowout portions composed of a plurality of blowout holes.
An air conditioning duct characterized in that 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 conditioning duct according to any one of claims 4 to 6.
A reinforcing portion formed along the longitudinal direction thereof is fixed to the soft duct.
The air-conditioning duct is characterized in that the reinforcing portion is formed to be harder than the soft duct and thicker than the soft duct, and is located at the top of the soft duct when the soft duct is used. The air conditioning duct according to claim 7.
An air conditioning duct characterized in that a plurality of mounting portions arranged at equal intervals along the longitudinal direction thereof are formed on the reinforcing portion on a side opposite to the side fixed to the soft duct. The air conditioning duct according to any one of claims 4 to 8.
A joint portion capable of changing the opening area of the main pipe is formed at the upstream end portion of the main pipe.
When the main pipe and the air conditioner pipe of the air conditioner are connected, the joint portion is located on the outer periphery of the air conditioner pipe, and the pipe wall of the main pipe and the outer circumference of the air conditioner pipe constituting the opening of the main pipe. An air-conditioning duct characterized in that the opening area of the main pipe is slightly deformed so as to be in close contact with the main pipe. The air conditioning duct according to any one of claims 4 to 9.
The soft duct is made of a fabric having ventilation and waterproof properties, a thermal conductivity of 0.1 w / mk or less, a mass of 100 g / m ² or less per unit area, and a thickness of 0.2 mm or less. An air conditioning duct that features that. The air conditioning duct according to any one of claims 4 to 10.
The soft duct is composed of a non-woven fabric in which synthetic fibers are bonded by heat and pressure.
The non-woven fabric is an air-conditioning duct characterized in that it is a sheet-like material in which elongated fibers having a thickness of 0.5 μm or more and 10 μm or less are randomly entwined and laminated in a spider web shape. The air conditioning duct according to any one of claims 4 to 11.
The main pipe and the loop-forming connecting pipe are made of a non-woven fabric made of the same material as the soft duct.
An air conditioning duct characterized in that each of the main pipe, the soft duct, and the loop-forming connecting pipe can be folded and stored when not in use.

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