JP5997539B2 - Air supply system - Google Patents

Description

  The present invention relates to an air supply system, and more particularly to an air supply system that conveys air supplied from an air supply device and blows it out through a duct.

  When conditioned air supplied from an air conditioner as an air supply device is transported by a duct and blown into a room that is an air-conditioned space, the temperature difference between the room temperature and the room temperature is large. There is a risk of becoming. In order to prevent this, a technique has been proposed in which air having a small temperature difference from room temperature is supplied indoors.

  For example, there is a technique in which low-temperature air having a large temperature difference from room temperature is mixed with return air from the room to form air having a small temperature difference from room temperature, and the mixed air is supplied into the room. However, in this technique, since a large amount of air after mixing has to be transported, a large facility with large air transport power is required.

  On the other hand, Patent Document 1 discloses an induction blow-out outlet “provided with a main body 1 that induces and mixes air in an air-conditioned space S with supplied air fed from outside and blows the mixed air to the air-conditioned space S”. (See paragraph 0011).

JP 2012-63079 A

According to the technique described in Patent Document 1, it is possible to supply air with a larger air volume than the supply air volume.
However, the technique described in Patent Document 1 has a problem in that the space for installing the equipment is increased by the space occupied by the air outlet since the air outlet is connected to the end of the duct. In addition, when a plurality of induction blow outlets are installed, it is necessary to install the induction blow outlets at the ends of the ducts branched into a plurality, and the installation space is further increased as the number of installation increases.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air supply system that can efficiently supply a large amount of air and suppress an increase in installation space.

In order to achieve the above object, an air supply system according to the present invention includes an air supply device that supplies air, a duct that conveys air supplied from the air supply device, and air in the duct. A plurality of pressurizing fans and a plurality of pressure fans that extend along the extending direction of the duct, and the air outside the duct is attracted by the air in the duct, and the air outside the duct is attracted by the air in the duct. An induction blow-off mechanism that blows out together with the induction blow-off mechanism, and the induction blow-off outlet mechanism has a cylindrical portion that is disposed through the duct, and the cylindrical portion injects air in the duct into the cylindrical portion. and have a opening for the tubular portion includes a first cylinder which is positioned on one side of the axial direction of the tubular portion, the second being located on the other side of the axial direction of the tubular portion A tube, and the opening includes the first tube and the first tube. Characterized in that it is formed in a gap between the cylinder.
The air supply system of the present invention includes an air supply device that supplies air, a duct for conveying air supplied from the air supply device, a pressure fan that pressurizes the air in the duct, An attraction air outlet mechanism that is provided in plural along the extending direction of the duct, attracts air outside the duct by jetting air in the duct, and blows out the air inside the duct together with the air outside the duct that is attracted; The induction blow-off mechanism has a cylindrical portion disposed through the duct, and the cylindrical portion has an opening for injecting air in the duct into the cylindrical portion; It has a 2nd opening part which is arrange | positioned in the upstream of the flow direction of the air in the said cylinder part rather than an opening part, and injects the air in the said duct into the said cylinder part, It is characterized by the above-mentioned.

  According to the present invention, it is possible to provide an air supply system that can efficiently supply a large amount of air and suppress an increase in installation space.

1 is a schematic perspective view of an air conditioning system according to a first embodiment of an air supply system of the present invention. It is a front view of the air conditioning system shown by FIG. It is a left view of the air conditioning system shown by FIG. It is sectional drawing of the principal part in alignment with the IV-IV line of FIG. It is a general | schematic disassembled perspective view of the principal part of an induction blower outlet mechanism. It is a block diagram regarding control of a pressure fan. It is a schematic perspective view of the air conditioning system which concerns on 2nd Embodiment of the air_supply system of this invention. It is a schematic perspective view of the air conditioning system which concerns on 3rd Embodiment of the air supply system of this invention. (A) (b) is sectional drawing which shows the example of the connection structure between the duct boxes shown by FIG. (a)-(c) shows the modification of the cross-sectional shape of an induction blower outlet mechanism at right angles to an axis, and (d) shows the modification of the arrangement form of an invitation blower outlet mechanism. It is a figure which shows the modification which provided the bell mouth at the upstream opening end of the cylinder part. It is a figure which shows the modification in which the nozzle which ejects the conditioned air in a duct toward the downstream from the upstream of a cylinder part was installed.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted as appropriate.

<< First Embodiment >>
First, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic perspective view of an air conditioning system according to a first embodiment of an air supply system of the present invention. FIG. 2 is a front view of the air conditioning system shown in FIG. FIG. 3 is a left side view of the air conditioning system shown in FIG. 1.

  As shown in FIGS. 1 to 3, the air conditioning system 1 according to the first embodiment of the air supply system of the present invention includes an air conditioner 2 as an air supply device for supplying air and air supplied from the air conditioner 2. Are provided with a duct 3, a pressurizing fan 4 for pressurizing the air in the duct 3, and a plurality of induction blower outlet mechanisms 5 provided along the extending direction of the duct 3.

  The air conditioning system 1 is configured so that air supplied from the air conditioner 2 can be transported through the duct 3 and blown out from the induction blowout outlet mechanism 5 into the room R that is the air-conditioned space. As the room R, for example, the inside of a temperature-controlled room that requires air blowing with a small temperature difference from the room temperature is not limited to this, but also includes the inside of a factory or a warehouse.

  The air conditioner 2 takes in the air in the room R from the suction port 21 and adjusts and supplies the taken-in air. Here, a description will be given of a case where the air conditioner 2 performs a cooling operation for cooling the taken-in air and supplying conditioned air having a predetermined low temperature.

  The air conditioner 2 is connected to a duct inlet 31 via a bellows tube 22, and the pressure fan 4 is disposed inside the duct inlet 31. However, the pressurizing fan 4 can be disposed at any position as long as the air in the duct 3 can be pressurized. The duct inlet 31 functions as a muffler box in which an air passage 32 is formed in which the internal wind speed is moderated to reduce noise.

  The duct 3 is connected to both sides of the duct inlet 31 and the duct inlet 31 and the inside of the duct 3 communicate with each other. Therefore, when the pressure fan 4 is operated, the air in the duct 3 is pressurized, and the inside of the duct 3 can be maintained at a predetermined high static pressure. The duct 3 and the duct inlet 31 are suspended and supported by a suspension member 18 from a beam member (not shown). 2 and 3, the illustration of the suspension member 18 is omitted.

  The duct 3 is configured by connecting a square tube-shaped duct unit 34 by an appropriate number screw fastening or the like. The length of the duct 3 shown in FIGS. 1 to 3 is an example, and can be appropriately changed by adding a plurality of duct units 34. Further, here, three duct outlet mechanisms 5 are provided in one duct unit 34.

FIG. 4 is a cross-sectional view of a main part taken along line IV-IV in FIG. FIG. 5 is a schematic exploded perspective view of a main part of the induction blower outlet mechanism.
As shown in FIG. 4, the induction outlet mechanism 5 attracts the air A <b> 2 outside the duct 3 by injecting the air A <b> 1 in the duct 3 into the cylindrical portion 51, and the air A <b> 1 in the duct 3 is attracted. 3 is blown out as mixed air in the direction of arrow B in FIG. 4 together with the outside air A2.

  As shown in FIGS. 4 and 5, the induction blow-off mechanism 5 has a cylindrical portion 51 that is disposed through the duct 3 in a direction substantially orthogonal to the extending direction of the duct 3. The duct 3 is formed with mounting holes 35 and 36 for mounting the cylindrical portion 51. And the cylinder part 51 is the opening part 54 for injecting the air A1 in the duct 3 in the cylinder part 51 along the inner surface of the cylinder part 51 toward the downstream of the flow direction of the air in the cylinder part 51. have.

  The cylindrical portion 51 includes a first cylinder 52 positioned on the upstream side in the air flow direction in the cylindrical portion 51, which is one axial side of the cylindrical portion 51, and the other axial side of the cylindrical portion 51. It has the 2nd pipe | tube 53 located in the downstream of the flow direction of the air in a certain cylinder part 51. FIG. The opening 54 described above is formed in the gap between the first cylinder 52 and the second cylinder 53.

  The first cylinder 52 of the cylindrical part 51 includes a circular pipe part 56 having a cylindrical shape, a connecting pipe part 58 connected to the downstream side in the air flow direction in the cylindrical part 51 of the circular pipe part 56, and a circular pipe part. 56 of the cylindrical part 51 and the disk-shaped 1st flange part 59 formed in the upstream of the flow direction of the air.

  The cylindrical part 51 has a second opening 55 for injecting the air A1 in the duct 3 into the cylindrical part 51 on the upstream side of the opening part 54 in the air flow direction in the cylindrical part 51. ing. Specifically, the second opening 55 includes a plurality of through holes formed on the outer peripheral surface of the circular pipe portion 56 of the first tube 52 on the upstream side in the air flow direction in the tube portion 51. . The shape of the through hole is circular here, but may be another shape such as an ellipse or a rectangle.

  Further, the induction blower outlet mechanism 5 has an adjustment unit 65 that adjusts the opening area of the second opening 55. The adjustment unit 65 includes a slide member 66 having a cylindrical shape and an adjustment screw 67 that adjusts the position of the slide member 66 in the axial direction of the cylinder portion 51. On the outer peripheral surface of the slide member 66, L-shaped metal fittings 68 are fixed at a plurality of locations in the circumferential direction by welding or the like. A through-hole 69 through which the tip of the adjustment screw 67 is inserted into the metal fitting 68. (See FIG. 5). The adjusting screw 67 is screwed into a nut 70 fixed by welding or the like at a coaxial position of a through hole (not shown) formed in an end face of the mounting flange portion 62 of the airflow guide member 60 described later, and the first flange portion A through hole 74 (see FIG. 5) formed in 59 is inserted and extended. A portion in which the through hole 69 of the metal fitting 68 is formed is positioned between the pair of collar members 71 with hooks fixed to the tip of the adjustment screw 67. As a result, the tip of the adjustment screw 67 and the metal fitting 68 are relatively rotatable while being engaged so that the relative position in the axial direction is regulated. Therefore, by rotating the adjusting screw 67, the adjusting screw 67 moves in the axial direction by the screw feeding action, and as a result, the slide member 66 moves in the axial direction of the cylindrical portion 51, and the opening area of the second opening 55 is increased. Can be adjusted. The configuration of the adjustment unit 65 described above is an example, and the present invention is not limited to this.

  Furthermore, the induction blower outlet mechanism 5 guides the air A1 in the duct 3 ejected from the second opening 55 along the inner surface of the cylindrical portion 51 toward the downstream side in the air flow direction in the cylindrical portion 51. An airflow guide member 60 is provided. The airflow guide member 60 is formed on the upstream side in the air flow direction in the cylindrical portion 51 of the guide portion 61 and the guide portion 61 having a cylindrical shape that is disposed at a position facing the inner side of the second opening portion 55. And a disk-shaped mounting flange portion 62.

  The airflow guide member 60 and the first cylinder 52 include a screw member 73 (see FIG. 4), a through hole 75 (see FIG. 5) in the mounting flange portion 62, and a through hole 76 (see FIG. 5) in the first flange portion 59. It is fixed to the duct 3 by being screwed into, for example, a pilot hole formed in the duct 3 through the heat insulating sheet 72. In addition, the code | symbol 37 in FIG. 4 shows heat insulating materials, such as glass wool.

  The connecting pipe portion 58 of the first cylinder 52 has a through-hole 77 (see FIG. 5) in which the screw member 57 (see FIG. 4) is formed at the downstream end in the air flow direction in the cylindrical portion 51 of the circular pipe portion 56. ) And is fixed to the circular pipe portion 56 by, for example, screwing into a prepared hole formed in the connection pipe portion 58. Note that the connection pipe part 58 is fixed to the circular pipe part 56 by the screw member 57 after the circular pipe part 56 of the first cylinder 52 and the second cylinder 53 are installed in the duct 3. Assembly work is easy.

  On the other hand, the second tube 53 of the tube portion 51 has a tapered shape (conical shape) and expands toward the downstream side in the air flow direction in the tube portion 51, and the tube portion 51 of the tube expansion portion 81. And a disk-shaped second flange portion 82 formed on the downstream side in the air flow direction. The taper angle α of the expanded portion 81 can be set as appropriate.

  The second cylinder 53 is inserted into the through hole 84 (see FIG. 5) of the second flange portion 82 through the screw member 83 (see FIG. 4) and screwed into, for example, the lower hole formed in the duct 3 via the heat insulating sheet 72. Therefore, it is fixed to the duct 3.

  A separator 85 is disposed between the outer peripheral surface of the connecting pipe portion 58 of the first cylinder 52 and the inner peripheral surface of the expanded pipe portion 81 of the second cylinder 53. For example, the separator 85 has a cylindrical shape whose diameter is equal to the radial dimension of the opening 54 and is installed at a plurality of locations in the circumferential direction. Thereby, the gap size in the radial direction of the opening 54 is accurately set. However, the shape of the separator 85 is not limited to a cylindrical shape, and may be other shapes such as a strip shape.

FIG. 6 is a block diagram relating to control of the pressure fan.
As shown in FIG. 6, the fan control unit 10 is connected to a room temperature sensor 11 installed at a predetermined position in the room R (see FIG. 3). The fan control unit 10 is connected to a fan motor 41 that rotates the pressure fan 4 (see FIG. 1) via a motor driver 42. Here, the fan control unit 10 is configured to be able to control the rotation speed (the number of rotations) of the pressure fan 4 according to the detection value of the room temperature sensor 11 so that the room temperature becomes the target temperature. In addition, the fan control part 10 is installed in the inside of the air conditioner 2, for example.

Next, the operation of the first embodiment configured as described above will be described.
As shown in FIG. 1, when the air conditioning system 1 is activated, the air conditioner 2 cools the air in the room R taken from the suction port 21 and supplies low-temperature conditioned air toward the duct inlet 31. The pressurizing fan 4 sends the conditioned air supplied from the air conditioner 2 into the duct 3 and pressurizes the air in the duct 3 to set the inside of the duct 3 to a predetermined high static pressure.

  That is, as shown in FIG. 4, the periphery on the outer peripheral surface side of the tubular portion 51 of the induction blower outlet mechanism 5 disposed through the duct 3 in a direction substantially orthogonal to the extending direction of the duct 3 is high static pressure. Become. The air A <b> 1 in the duct 3 having a high static pressure passes through the opening 54 and is injected into the cylinder portion 51. By the injection of the air A1 in the duct 3 from the opening 54, the indoor air which is the air A2 outside the duct 3 is attracted into the cylinder 51 from the upstream opening end of the cylinder 51, and the air A1 in the duct 3 The conditioned air is blown out as mixed air from the downstream opening end of the cylindrical portion 51 in the direction of arrow B in FIG. In this manner, the mixed air having an air volume larger than the supply amount of the conditioned air is supplied.

  The air A1 in the duct 3 having a high static pressure is also injected into the cylindrical portion 51 from the second opening 55 located on the upstream side of the opening 54, and is directed downstream by the airflow guide member 60. To be guided. Also by the injection from the second opening 55, the indoor air that is the air A2 outside the duct 3 is attracted into the cylindrical portion 51, and the conditioned air that is the air A1 inside the duct 3 is attracted to the outside of the duct 3 that is attracted. The air A2 is blown out as mixed air. Thereby, the air volume of mixed air further increases.

  Further, the fan control unit 10 controls the rotational speed of the pressure fan 4 based on the detection value of the room temperature sensor 11 so that the room temperature becomes the target temperature. Thereby, since the injection speed from the opening 54 and the second opening 55 of the air A1 in the duct 3 is controlled, the conditioned air volume that is the volume of conditioned air conveyed through the duct 3 and the inside of the duct 3 The induced air volume, which is the air volume of the air A2 outside the duct 3 that is attracted by the injection of the air A1, is controlled. Therefore, it becomes possible to efficiently remove the sensible heat load in the room R by supplying an air volume corresponding to the room temperature, thereby saving energy.

  As described above, the air conditioning system 1 according to the first embodiment includes the air conditioner 2 that supplies air, the duct 3 for conveying the air supplied from the air conditioner 2, and the pressurizing air in the duct 3. A plurality of pressure fans 4 are provided along the extending direction of the duct 3, and the air outside the duct 3 is attracted by the injection of air inside the duct 3, together with the air outside the duct 3 attracted by the air inside the duct 3. And an attraction outlet mechanism 5 for blowing out. And the induction blower outlet mechanism 5 has the cylinder part 51 arrange | positioned through the duct 3, and the cylinder part 51 has the opening part 54 for injecting the air A1 in the duct 3 in the cylinder part 51. As shown in FIG. Have.

According to such 1st Embodiment, it is the air A2 outside the duct 3 from the upstream opening end of the cylinder part 51 using the injection force of the conditioned air supplied from the air conditioner 2 via the duct 3. The indoor air can be attracted, and the conditioned air that is the air A1 in the duct 3 can be blown out from the downstream opening end of the cylindrical portion 51 together with the attracted indoor air. As a result, it is possible to supply air with a larger air volume than the amount of conditioned air supplied from the air conditioner 2 and to reduce the air conveyance power. Therefore, a desired air conditioning environment can be easily constructed by efficiently supplying a large amount of air.
Moreover, since the cylinder part 51 of the induction blower outlet mechanism 5 is arrange | positioned through the duct 3, the invitation blower outlet mechanism 5 will be arrange | positioned inside the space occupied by the duct 3. FIG. Therefore, a special installation space for the induction blower outlet mechanism 5 is not necessary.
That is, it is possible to provide the air conditioning system 1 that can efficiently supply a large amount of air and suppress an increase in installation space.

  In the first embodiment, the cylinder portion 51 includes a first cylinder 52 positioned on one side of the cylinder portion 51 in the axial direction and a second cylinder positioned on the other side of the cylinder portion 51 in the axial direction. 53 and the opening 54 is formed in the gap between the first cylinder 52 and the second cylinder 53. According to such a configuration, the first cylinder 52 and the second cylinder 53 are attached to the mounting holes 35 and 36 of the duct 3 so as to sandwich the duct 3 from both sides in a direction substantially orthogonal to the extending direction of the duct 3. The openings 54 can be formed while being installed respectively. Therefore, the attachment work of the induction blower outlet mechanism 5 to the duct 3 becomes easy.

  Further, in the first embodiment, the cylinder part 51 is a second for injecting the air A1 in the duct 3 into the cylinder part 51 upstream of the opening part 54 in the air flow direction in the cylinder part 51. An opening 55 is provided. According to such a configuration, the indoor air which is the air A2 outside the duct 3 can be attracted into the cylindrical portion 51 not only by the opening 54 but also by the injection from the second opening 55, and the mixed air The air volume can be further increased.

  Further, in the first embodiment, the attraction outlet mechanism 5 has an adjustment unit 65 that adjusts the opening area of the second opening 55. According to such a configuration, the injection amount of the air A1 in the duct 3 from the second opening 55 can be adjusted, and thereby the air volume of the mixed air can be adjusted.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a schematic perspective view of an air conditioning system according to the second embodiment of the air supply system of the present invention. The same configurations and operations as those of the first embodiment shown in FIGS. 1 to 6 are appropriately omitted as they are taken into the second embodiment.

  As shown in FIG. 7, in the air conditioning system 1 a according to the second embodiment, the nozzle 12 that ejects conditioned air in the duct 3 is installed on the outer surface 33 (here, the upper surface) of the duct 3. The second embodiment is different from the first embodiment, and the other is the same as the first embodiment. In addition, the installation position of the nozzle 12 may be the lower surface of the duct 3, and the installation number can be set as appropriate. As the nozzle 12, various nozzles such as a diffusion nozzle that ejects air at a wide angle and an attracting nozzle that attracts and ejects ambient air can be used.

  According to such 2nd Embodiment, in addition to having the same effect as 1st Embodiment mentioned above, it becomes possible to stir well the air of the room | chamber interior R with the nozzle 12. FIG. Thereby, a more uniform air conditioning environment can be quickly constructed. In addition, it is desirable that the jet direction of the air from the nozzle 12 is adjusted according to the situation in the room R.

«Third embodiment»
Next, a third embodiment of the present invention will be described with reference to FIGS.
FIG. 8 is a schematic perspective view of an air conditioning system according to a third embodiment of the air supply system of the present invention. FIGS. 9A and 9B are cross-sectional views showing examples of the connection structure between the duct boxes shown in FIG. The same configurations and operations as those of the first embodiment shown in FIGS. 1 to 6 are appropriately omitted as they are taken into the third embodiment.

  As shown in FIG. 8, in the air conditioning system 1b according to the third embodiment, the duct 3a includes a plurality of duct boxes (short portions) 38 whose appearance arranged along the extending direction of the duct 3a has a cubic shape. Have. One duct box 38 is provided with one attraction outlet mechanism 5 here, but is not limited to this, and may be provided with two or more. The appearance of the duct box 38 is not limited to a cubic shape, and may have another three-dimensional shape such as a rectangular parallelepiped shape.

  The duct box 38 is configured to be rotated around an axis C along the extending direction of the duct 3a so that the angular position in the circumferential direction around the axis C can be changed. Note that the duct box 38 that is inclined so that the direction in which the air is blown from the induction blow-off mechanism 5 has an angle with respect to the horizontal is suspended and supported by the suspension member 18a from the horizontal bar 17.

  As shown in FIG. 9 (a), the connection structure 13 between the adjacent duct boxes 38, 38 has openings 38a, 38a formed on opposing surfaces of the two duct boxes 38, 38 connected to each other. A pair of joint inner cylinders 14 and 14 each having a substantially cylindrical shape fixed by welding or the like at the coaxial position on the outer side, and a joint outer shape having a substantially cylindrical shape disposed on the outer peripheral surface side of the pair of joint inner cylinders 14 and 14. And a cylinder 15. A seal member 16 is mounted between the joint inner cylinder 14 and the joint outer cylinder 15, thereby maintaining airtightness.

  In addition, the connection structure between the adjacent duct boxes 38 and 38 is not limited to the structure shown to Fig.9 (a). For example, as shown in FIG. 9 (b), the connection structure 13a between the adjacent duct boxes 38, 38 has openings 38a, 38a, 38a formed on opposite surfaces of the two duct boxes 38, 38 connected to each other. A pair of joint outer cylinders 15a, 15a each having a substantially cylindrical shape fixed to the coaxial position by welding or the like inside 38a, and a substantially cylindrical shape disposed on the inner peripheral surface side of the pair of joint outer cylinders 15a, 15a. You may comprise so that the joint inner cylinder 14a to exhibit may be provided.

  According to such 3rd Embodiment, in addition to having the same effect as 1st Embodiment mentioned above, the angular position of the circumference direction around the axis | shaft C of the duct box 38 is changed suitably. Thus, the air in the room R can be stirred well. Thereby, a more uniform air conditioning environment can be quickly constructed. In addition, it is desirable that the jet direction of the air from the induction blower outlet mechanism 5 of the duct box 38 is adjusted according to the state of the room R.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  For example, in the above-described embodiment, the induction blower outlet mechanism 5 has a circular cross-sectional shape perpendicular to the axis, but is not limited thereto. For example, as shown in FIGS. 10A to 10C, at least a part of the induction outlet mechanism 5a may have another shape such as an ellipse or an ellipse in the cross-sectional shape perpendicular to the axis.

  In the above-described embodiment, a plurality of the induction blower outlet mechanisms 5 are arranged in a line along the extending direction of the duct 3. However, the present invention is not limited to this. For example, FIG. As shown in FIG. 5, for example, a plurality may be arranged in two rows. In this case, the position of the induction blower outlet mechanism 5 in the extending direction of the duct 3 may be shifted between the rows (see FIG. 10D, staggered arrangement), or may not be shifted.

  As shown in FIG. 11, the induction blow-off mechanism 5 includes a bell mouth 86 having a guide surface for introducing the air outside the duct 3 into the tube portion 51 from the upstream side of the tube portion 51. May be provided at the upstream opening end. The bell mouth 86 has a semicircular cross section, for example, and has a ring shape as a whole. If comprised in this way, the ventilation resistance at the time of attracting the air outside the duct 3 in the cylinder part 51 can be reduced.

  As shown in FIG. 12, an ejection nozzle 87 that ejects conditioned air in the duct 3 from the upstream side to the downstream side of the cylindrical portion 51 may be installed on the outer surface 33 of the duct 3. If comprised in this way, the air outside the duct 3 can be further attracted in the cylinder part 51, and the air volume of mixed air can be increased further.

  Moreover, in the above-described embodiment, the axis along the extending direction of the duct 3 is a straight line, but the present invention is not limited to this, and may be a curved line or may be bent.

  Moreover, although the above-described embodiment explained the case where the air conditioner 2 as the air supply device performs the cooling operation, the present invention is not limited to this. The present invention is also applicable when the air supply device performs a heating operation, a dehumidifying operation, a blowing operation, or the like. Here, as an air supply device, for example, an air conditioning / ventilation system such as a ready-made PAC (Package Air Conditioner), AHU (Air Handling Unit), or the like can be used.

1, 1a, 1b Air conditioning system (air supply system)
2 Air conditioner (air supply device)
3, 3a Duct 4 Pressure fan 5, 5a Induction blow-out mechanism 12 Nozzle 33 Outer surface 38 Duct box (short part)
51 cylinder section 52 first cylinder 53 second cylinder 54 opening 55 second opening 65 adjustment section A1 air in the duct A2 air outside the duct C axis

Claims (6)

An air supply device for supplying air;
A duct for conveying air supplied from the air supply device;
A pressure fan that pressurizes the air in the duct;
An attracting outlet mechanism that is provided in plural along the extending direction of the duct, attracts air outside the duct by jetting air in the duct, and blows out the air in the duct together with the air outside the duct that has been attracted And comprising
The induction blow-off mechanism has a cylindrical portion disposed through the duct,
The tubular section may have a opening for ejecting air in the duct into the cylindrical portion,
The cylinder part has a first cylinder located on one side in the axial direction of the cylinder part, and a second cylinder located on the other side in the axial direction of the cylinder part,
The air supply system , wherein the opening is formed in a gap between the first cylinder and the second cylinder . An air supply device for supplying air;
A duct for conveying air supplied from the air supply device;
A pressure fan that pressurizes the air in the duct;
An attracting outlet mechanism that is provided in plural along the extending direction of the duct, attracts air outside the duct by jetting air in the duct, and blows out the air in the duct together with the air outside the duct that has been attracted And comprising
The induction blow-off mechanism has a cylindrical portion disposed through the duct,
The cylindrical portion is disposed on an upstream side in the air flow direction in the cylindrical portion with respect to the opening for injecting the air in the duct into the cylindrical portion, and the air in the duct is An air supply system comprising: a second opening for injecting into the cylindrical portion . The air feeding system according to claim 2 , wherein the attraction outlet mechanism includes an adjustment unit that adjusts an opening area of the second opening. The duct has a plurality of short portions arranged along the extending direction of the duct,
The short portion is provided with at least one attraction outlet mechanism,
The short portion is configured to be rotatable around an axis along the extending direction of the duct so that a circumferential angular position around the axis can be changed. Item 4. The air supply system according to any one of Items 3 . The air supply system according to any one of claims 1 to 4 , wherein a nozzle for ejecting air in the duct is installed on an outer surface of the duct. The air supply system according to any one of claims 1 to 5 , wherein the air supply device is an air conditioner that adjusts and supplies intake air.

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