JP6440252B2 - Air outlet device - Google Patents

Description

  The present invention relates to a blowout device for blowing out conditioned air supplied from an air conditioner into a room.

  An air outlet device is installed on the ceiling, and air-conditioned air is supplied from the air outlet device to the living room. In addition to the ambient air conditioning that uniformly harmonizes the air in the room, task air conditioning corresponding to the seating area (task area) of the worker is being performed individually. In task air conditioning, a large number of air outlet devices corresponding to individual workers are installed on the ceiling, and airflow is sent out from each air outlet device toward each task area. The task air-conditioning not only improves the comfort of office workers, but it can save energy compared to uniformly air-conditioning the entire room. For example, when the airflow reaches the office worker directly during cooling, the temperature of the sensation can be lowered and the set temperature can be increased due to the airflow, and the energy cost for air conditioning can be reduced.

  There have been proposed air outlet devices for task air conditioning (for example, Patent Documents 1 and 2). Patent Document 1 discloses a task / ambient air outlet device. This air outlet apparatus is shown in FIG. The structure of a conventional task outlet device will be briefly described. Below the chamber 11, cylindrical ventilation members 24 and 25 are connected to the chamber 11. Partition walls 28 and 29 having a shutter mechanism are provided inside the ventilation members 24 and 25, and shaft bodies 30 and 31 are rotatably supported at the centers of the partition walls 28 and 29. Further, below the shaft bodies 30 and 31, nozzle-type blowing members 38 and 39 are provided so as to be tiltable via universal joints 34 and 35 and support shafts 36 and 37. The blowing members 38 and 39 have bottomless bowl-shaped main body portions 38a and 39a and short cylindrical mouth edge portions 38b and 39b. In this configuration, the user adjusts the blowing members 38 and 39 to a desired angle. Then, the air that has flowed into the ventilation members 24 and 25 from the chamber 11 is blown out in the direction directed by the blowing members 38 and 39, particularly the mouth edges 38 a and 39 a of the blowing members 38 and 39. As a result, the airflow blows in the desired direction, and the conditioned air directly hits the office worker.

JP 2013-29238 A JP 2013-127336 A

  Conventional task outlets have been designed on the assumption that they are installed directly above the office worker. For example, the air outlet system of Patent Document 2 can blow out only as a task airflow. Here, the blower outlet device of patent document 1 can produce the task airflow of the diagonal direction by inclining the blowing members 38 and 39. FIG. However, it is difficult to say that the air outlet device of Patent Document 1 is designed with sufficient consideration to the blown airflow in an oblique direction. The inventors of the present invention have experimented by making a prototype of the outlet device. As a result, it was found that there is a difference between the direction of the blowing members 38 and 39 and the direction of the central wind speed of the oblique airflow.

One reason is as follows. In the air outlet device of Patent Document 1, the air blowing members 38 and 39 serve as nozzles for defining the direction of airflow. The direction of the air flow can be freely adjusted by tilting the blowing members 38 and 39 in the ventilation members 24 and 25. However, the length of the straight portions of the blowing members 38 and 39 that have an influence on directivity. (38b, 39b) is short.
This is not a problem when there is a blowout opening in the immediate vicinity of people in a narrow space such as a bullet train, an airplane, a bus, or a car. There is a difference in direction.

  According to the product outlet of the air outlet device of Patent Document 1, the angle of oblique blowout is 30 degrees at the maximum. When this air outlet device is installed on the ceiling between office workers, the airflow cover area is as shown in FIG. The whole body of each worker does not enter the cover area, and the airflow is felt only on one shoulder or the front side.

  In the oblique airflow, it is not preferable that there are obstacles such as the support shafts 36 and 37 in the blowing members 38 and 39 as shown in FIG. This is because the air flowing vigorously collides with these obstacles and the directivity is weakened due to the disturbance of the airflow. The support shafts 36 and 37 and the like are arranged in the air passage not only in Patent Document 1, but often when a short cylindrical blowing nozzle is employed (for example, Japanese Patent Application Laid-Open No. 2010-111068). Publication).

  By the way, at present, the price of the task outlet is set to be quite high. Even in the air outlet device of Patent Document 1, it is inferred that the structure is complicated, for example, using universal joints 34 and 35, and the manufacturing and assembly costs increase. Due to the high price, there is a problem that the introduction of the task air outlet device is not progressing as expected, and as a result, the energy saving related to the air conditioning of the office does not progress easily.

  The objective of this invention is providing the blower outlet apparatus which can improve the directivity at the time of blowing in the diagonal direction, and can ensure a sufficient cover area.

The air outlet device of the present invention comprises:
A nozzle unit that blows out conditioned air individually toward a task area in which a worker is present in the room;
A nozzle support part for supporting the nozzle part, comprising:
The nozzle portion has a task air flow path that is a cylindrical hole penetrating the nozzle portion, and is supported to be tiltable by a pitch axis.
The nozzle support part supports the pitch axis so that the nozzle part can tilt in the pitching direction, and the nozzle part is arranged around a yaw axis that is perpendicular to a ceiling or a wall to which the air outlet device is attached. Support the nozzle so that it can rotate,
The task air flow path has at least one flat surface parallel to the pitch axis on an inner wall surface thereof.

In the present invention,
The task air flow path preferably has a length of 35 mm or more.

In the present invention,
The length of the task air flow path is preferably 0.8 times or more when one side of the opening on the outlet side of the task air flow path is used as a reference.

In the present invention,
The task air flow path is preferably a prismatic cylindrical hole.

In the present invention,
A panel having a circular mounting hole and fitted into the ceiling or wall of the living room;
The nozzle support is
A cylindrical body that supports the nozzle portion on the inside and has a diameter smaller than the mounting hole; and
A flange portion having a diameter larger than that of the mounting hole,
It is preferable that the flange portion is caught on the periphery of the mounting hole, and the nozzle support portion is rotatably attached to the mounting hole of the panel portion.

In the present invention,
The nozzle part has a nozzle body part whose outer shape is a short cylindrical shape,
It is preferable that the cylinder main body has a shielding plate on its inner side so as to prevent penetration of the cylinder, and the shielding plate has an inner hole in which the nozzle main body is loosely fitted.

In the present invention,
The cylinder body part has a lid having an outer hole, and a part of the nozzle part comes out of the cylinder body part from the outer hole,
It is preferable that the maximum inclination angle of the nozzle portion is regulated by the nozzle portion coming into contact with the edge of the outer hole.

In the present invention,
The nozzle portion preferably has a wide-mouth opening that communicates with the task air flow path and widens the entrance of the task air flow path in a funnel shape.

In the present invention,
It has a connection port connected to the duct on the side surface, and includes a hollow chamber box that is open on one side, and a panel portion that is attached so as to close the opening of the chamber box,
The chamber box has an outer cone portion whose edge of the opening widens toward the end, the panel portion has an inner cone portion whose outer periphery spreads toward the end, and the panel portion becomes an opening of the chamber box. When attached, a gap formed between the outer cone portion and the inner cone portion becomes an ambient outlet,
The panel portion has side walls erected along the outer periphery thereof,
When the panel portion is attached to the opening of the chamber box, the side wall and the inner surface of the chamber box face each other with a gap between them,
When the side wall on the side opposite to the side with the connection port is a first side wall, and the side wall on the side surface with the connection port is a second side wall,
The height T2 of the second side wall is preferably higher than the height T1 of the first side wall.

In the present invention,
It is preferable that the height of the side wall on the side intersecting the side surface with the connection port is higher than the height of the second side wall.

The figure which shows the state which installed the blower outlet apparatus 100 of this invention in the ceiling. The figure which shows the state which removed the lower surface panel part 120 of this invention from the chamber box 110. FIG. The perspective view of the lower surface panel part 120 of this invention. The disassembled perspective view of the blowing part 200 for tasks of this invention. The figure which shows the state which attached the blowing part for tasks 200 of this invention to the lower surface panel part 120. FIG. Sectional drawing of the blowing part 200 for tasks in the VI-VI line in FIG. The figure which shows the state which inclined the nozzle part 210 of this invention. The figure which shows a mode that the airflow is blown off to the office worker in the living room of this invention. The figure for demonstrating the experimental method which investigates the relationship between the shape and performance of the nozzle of this invention. The figure which showed the cover area at the time of installing the blower outlet apparatus 100 in the ceiling of this invention. The figure for demonstrating the effect of the shielding board 340 of this invention. The figure which shows the case where the inclination-angle of a nozzle part is enlarged too much. The figure which shows the case where the support position of the pitch axis | shaft of this invention is lowered | hung. The figure which shows the example at the time of making the air flow path 230 for tasks of this invention into the shape of a triangular prism. The figure which shows the example at the time of making the air flow path 230 for tasks of this invention into a semicylindrical shape. The figure which shows a mode that the direction of inclination of the nozzle part of this invention is changed from right inclination to left inclination. The figure which shows the example at the time of making the external shape of the nozzle part 210 of this invention into the shape of a prism. The figure which shows the modification of the shape of the nozzle part of this invention. The figure which shows 2nd Embodiment of this invention. The figure which shows the state which removed the chamber box 110 of this invention from the lower surface panel part 120. FIG. The figure which models and shows the airflow in the chamber box 110 of this invention. Explanatory drawing of a prior art. The figure which illustrated the cover area by a prior art.

An embodiment of the present invention will be illustrated and described with reference to reference numerals attached to elements in the drawing.
(First embodiment)
FIG. 1 is a diagram illustrating a state in which the air outlet device 100 is installed on the ceiling.
The air outlet device 100 includes a chamber box 110, a lower surface panel portion 120, and a task air outlet portion 200.

  FIG. 2 is a view showing a state in which the lower panel 120 is removed from the chamber box 110. The chamber box 110 is a hollow body having a prismatic shape (quadrangular prism shape) as a whole and having an open bottom surface 111. The chamber box 110 has a connection port 112 connected to the duct 500 on one side surface thereof.

FIG. 3 is a perspective view of the lower panel portion 120.
The lower panel portion 120 is attached so as to close the lower surface opening 111 of the chamber box 110. The lower panel portion 120 is a rectangular thin plate made of resin or metal. The lower panel portion 120 has a circular hole 121 at its approximate center. Since this hole 121 is for attaching the task blowing part 200, this hole will be referred to as an attachment hole 121.

  FIG. 4 is an exploded perspective view of the task blowing unit 200. FIG. 5 is a view showing a state in which the task blowing portion 200 is attached to the lower surface panel portion 120. The task blowing unit 200 blows out conditioned air toward the office area (task area) of the office worker. The task blowing unit 200 includes a nozzle unit 210 and a nozzle support unit 300.

  The nozzle unit 210 has a task air channel 230 that is a prismatic cylindrical hole, and is supported in a tiltable manner about a rotation axis PX that is orthogonal to the axis of the task air channel 230. The nozzle part 210 includes a nozzle body part 220, a wide-mouth opening part 240, and an outlet edge part 250.

  The nozzle main body 220 has a short cylindrical shape, and has a quadrangular columnar (in this case, a regular quadrangular columnar) through-hole 230 along its diameter. This through hole 230 is referred to as a task air flow path 230. The entrance side of the task air flow path 230 is located inside the chamber box 110, and the exit of the task air flow path 230 is located in the living room. Then, the conditioned air blows out from the chamber box 110 to the living room via the task air flow path 230.

  The nozzle body 220 is a short cylinder, and male screws 221 and 221 are screwed into the central axis of the short cylinder. Here, male screws 221 and 221 are screwed in from the task air flow path 230 to the outside. The male screws 221 and 221 serve as the rotation axis PX, and the nozzle portion 210 is pivotally supported by the nozzle support portion 300 so as to be tiltable. Considering the case where the air outlet device 100 is installed on the ceiling, the rotation axis PX is parallel to the floor surface (horizontal plane). In the present specification, the rotation axis PX is referred to as a pitch axis PX.

  The task air flow path 230 has a quadrangular prism shape, that is, has four planes. Here, the two surfaces are parallel to the pitch axis PX, and the remaining two surfaces are orthogonal to the pitch axis PX. Even when the nozzle unit 210 tilts about the pitch axis PX, this relationship (two surfaces are parallel to the pitch axis PX and the remaining two surfaces are orthogonal to the pitch axis PX) is maintained.

FIG. 6 is a cross-sectional view of the task blowing section 200 taken along line VI-VI in FIG. From the viewpoint of increasing the directivity of the blown airflow, the length LN of the task air flow path 230 is secured to some extent. The length LN of the task air flow path 230 is preferably, for example, 35 mm or more. If the length LN of the task air flow path 230 is less than 20 mm, the directivity of the blown air current cannot be sufficiently ensured.
In this embodiment, the length LN of the task air flow path 230 is 60 mm. Incidentally, the opening 235 is a 45 mm square. Considering the length of one side of the opening 235 as a reference, the length LN of the task air flow path 230 needs to be 0.8 times or more, preferably 1.0 times or more, more preferably 1.2 times. Above, more preferably 1.3 times or more. Although the upper limit is not limited, according to the experiments of the present inventors, even if the length of the task air flow path 230 is increased beyond 60 mm, the directivity of the blown airflow does not increase so much. Therefore, it is considered that the length LN of the task air flow path 230 is preferably at most 70 mm and at most about 75 mm.

The wide-mouth opening 240 is attached to the side surface of the nozzle body 220 and communicates with the task air flow path 230, and widens the entrance of the task air flow path 230 outwardly in a funnel shape. The conditioned air supplied from the duct 500 hits the inner wall of the chamber box 110 and then flows into the nozzle unit 210 from directly above. For example, when the nozzle portion 210 is tilted as shown in FIG. 7, the task air flow path 230 also becomes slanted, and the entrance of the task air flow path 230 does not face directly above. There is a possibility.
In this regard, even if the nozzle part 210 is inclined, the wide-mouth opening 240 can sufficiently ensure the inflow of air. In the present embodiment, the wide opening 240 also serves as a stopper for restricting the maximum inclination angle of the nozzle part 210, which will be described later.

  The outlet edge 250 has a slightly raised edge on the outlet side of the task air flow path 230. The height (length) of the outlet edge 250 is arbitrary, but it is preferable to keep the outlet edge 250 so that it does not become unnatural when looking up at the outlet device 100 from the room.

The nozzle support part 300 will be described.
The nozzle support unit 300 supports the pitch axis PX of the nozzle unit 210 and further allows the nozzle unit 210 to rotate 360 degrees around the vertical axis YX in the horizontal plane.
In the present specification, the vertical axis YX is referred to as a yaw axis YX.

The nozzle support part 300 includes an inner cylinder part 310 and an outer cylinder part 360. The inner cylinder part 310 supports the pitch axis PX of the nozzle part 210. The inner cylinder part 310 includes an inner cylinder body part 320 and a flange part 311. The inner cylinder main body 320 has a short cylindrical shape, but has a shielding plate 340 so as to prevent penetration of the cylinder.
A rectangular hole 341 is formed in the shielding plate 340, and the nozzle portion 210 just fits into the hole 341. (Of course, a slight gap is left between the hole 341 and the nozzle part 210 so that air leakage is sufficiently small and the tilting of the nozzle part 210 is allowed.) I will call it.

  Two supporting pieces 342 and 342 that support the pitch axis PX are provided so as to face each other along the two long sides of the inner hole 341. Bosses 344 and 344 are provided on the support pieces 342 and 342, and the male screws 221 and 221 that are the pitch axes PX are rotatably supported by the bosses 344 and 344.

  In the inner cylinder main body 320, inverted L-shaped members 321 and 321 are attached to the opening on the upper end side, and female screw holes are formed in the L-shaped members 321 and 321. This female screw hole is used for screwing the inner cylinder part 310 and the outer cylinder part 360.

  At the lower end of the inner cylinder main body 320, there is a flange portion 311 that spreads outward. Since the outer cylinder part 360 also has the flange part 361, the flange part of the inner cylinder part 310 is referred to as a first flange part 311. The diameter of the inner cylinder main body 320 is smaller than the diameter of the mounting hole 121 of the lower panel portion 120, but the outer diameter of the first flange portion 311 is larger than the diameter of the mounting hole 121. Then, the inner cylinder part 310 is passed through the attachment hole 121 from the lower side of the lower panel part 120. Then, the inner cylinder main body 320 passes through the attachment hole 121, but the first flange portion 311 is caught by the edge of the attachment hole 121. Thereafter, when the inner cylinder part 310 rotates around the yaw axis YX together with the nozzle part 210, the lower panel part 120 and the first flange part 311 are worn away from each other. Therefore, a resin material or the like may be interposed between the first flange portion 311 and the lower panel portion 120. For example, a resin material (not shown) may be pasted on the upper surface of the first flange portion 311.

The outer cylinder part 360 includes an outer cylinder main body part 370 and a flange part 361.
The outer cylinder main body 370 is a cylinder that is slightly larger than the inner cylinder main body 320 and covers the outer side of the inner cylinder main body 320. A lid 371 having a rectangular hole 372 is provided on the upper surface of the outer cylinder main body 370, and the entire wide-mouth opening 240 and a part of the nozzle main body 220 come out of the cylinder from the hole 372. This hole will be referred to as an outer hole 372.

  The size of the outer hole 372, particularly the length of the long side, is determined by how much the maximum inclination angle of the nozzle portion 210 is to be set. Referring to FIGS. 6 and 7, the wide opening 240 is brought into contact with the edge of the outer hole 372 so as to regulate the maximum inclination angle of the nozzle part 210. Here, the outer hole 372 is left open so as to regulate the maximum inclination angle of the nozzle part 210 at 34 degrees.

  Further, two long holes 373 and 373 are provided in the lid 371, and the inner cylinder part 310 and the outer cylinder part 360 are screwed through the long holes 373 and 373.

  A flange portion 361 is provided at the lower end of the outer cylinder main body portion 370. In order to distinguish from the first flange portion 311 of the inner tube portion 310, the flange portion of the outer tube portion 360 will be referred to as a second flange portion 361. The outer diameter of the second flange portion 361 is larger than the diameter of the mounting hole 121. When the outer cylinder part 360 is put on the inner cylinder part 310, the lower surface panel part 120 around the mounting hole 121 is sandwiched between the first flange part 311 and the second flange part 361. Thereby, the nozzle support part 300 can be rotated 360 degrees around the central axis (yaw axis YX) of the mounting hole 121. That is, the nozzle support part 300 can tilt the nozzle part 210 in the pitch direction, and can further rotate the nozzle part 210 360 degrees in the horizontal plane about the yaw axis YX.

The usage method and operation | movement of the blower outlet apparatus 100 are demonstrated.
As shown in FIG. 8, suppose that it is desired to apply a blown airflow toward the office worker in the room. The exit of the task air flow path 230 of the nozzle unit 210 may be directed to the office worker. However, since the rotation axis of the nozzle unit 210 is separated into the pitch axis PX and the yaw axis YX, the pitch angle and the yaw angle Must be adjusted separately. The yaw angle may be adjusted after adjusting the pitch angle, and vice versa.

  Air-conditioned air is supplied from the duct 500 to the chamber box 110 via the connection port 112. Then, the conditioned air bounces off the inner wall in the chamber box 110 or is pushed by the internal pressure in the chamber box 110 and flows from above the connection port 112 to below the task air flow path 230. The conditioned air then flows into the task air flow path 230 from the wide opening 240. The conditioned air that has flowed into the task air flow path 230 is directed along the length direction of the task air flow path 230 while flowing through the task air flow path 230. Then, the conditioned air blows out from the exit of the task air flow path 230 toward the office worker, and the airflow having directivity hits the office worker.

The effect of this embodiment having such a configuration will be described.
(1) According to this embodiment, the directivity of the blown airflow can be significantly increased. That is, since the task air flow path 230 is sufficiently long, the airflow can be directed in a direction along the task air flow path 230. Even if the air outlet device 100 is installed on the ceiling, the airflow with the directivity sufficiently reaches the office worker sitting in the room.

(2) In the present embodiment, the task air flow path 230 has a prismatic shape. Thus, it is thought that the directivity and momentum of the airflow could be strengthened by configuring the inner surface of the task air flow path 230 in a plane.
As can be seen from FIG. 7, the airflow that has flowed vertically downward in the chamber box 110 hits the inner surface of the task air flow path 230 when it enters the task air flow path 230, and reflects (bounces back) in the blowing direction. ). By using a prismatic air flow path as in the present embodiment, the conditioned air that has flowed into the task air flow path 230 is reflected by a flat surface and blows out strongly.

  Even if the length of the nozzle is sufficient, if the inner surface is curved like a round nozzle, the reflected airflow may create a complex airflow, which may reduce the momentum.

  Furthermore, even if the nozzle is in the shape of a prism, the effect may or may not be exhibited if the orientation of the surfaces constituting the prism is changed from time to time. From this point of view, it can be said that the configuration in which the nozzle part 210 is rotated by a universal joint (universal joint) is not good. In the present embodiment, the pitch axis PX and the yaw axis YX are separated, and two of the four planes constituting the task air flow path 230 are always parallel to the pitch axis PX regardless of the yaw angle. I am doing so. From the user's point of view, the outlet of the task air flow path 230 is rectangular (square), but the lower side is always parallel to the floor even if the nozzle part 210 is inclined. In other words, the conditioned air inflow direction, the blow-out direction, and the normal of the inner wall surface serving as the reflection surface are in the same plane (perpendicular to the pitch axis PX). Thus, the airflow that has flowed into the task air flow path 230 can be strongly reflected in the blowing direction.

(3) As an effect that appears remarkably when the inclination angle of the nozzle part 210 is large, the angle of the blown airflow can be made larger than the inclination angle of the nozzle part 210. FIG. 7 shows a state in which the nozzle portion 210 is inclined at 34 degrees which is the maximum inclination angle. The conditioned air that has flowed into the task air flow path 230 from substantially the vertical direction is reflected by the inner surface of the task air flow path 230 and blows out from the outlet. Then, the conditioned air bounced off the reflecting surface is blown out at an angle larger than the inclination angle of the nozzle unit 210.
This is an effect obtained by combining the task air flow path 230 with a sufficiently long length and the task air flow path 230 having a prismatic shape.

  Tables 1 and 2 show the experimental results of the present inventors.

The experimental procedure is briefly described.
First, a cylindrical nozzle (round nozzle) and a prismatic nozzle (square nozzle) were prepared. The round nozzle and the square nozzle have the same length, and the effective opening area is the same. And the angle of the airflow which shows the maximum wind speed, and the wind speed at that time were measured in the state which set the angle of the nozzle (210) to 34 degree | times like FIG.

  As shown in Table 1, in the case of the square nozzle, the direction of the airflow showing the maximum wind speed was 36 degrees. In other words, it was found that the air was blown out at an angle larger than the nozzle angle of 34 degrees. Further, as can be seen from Table 2, the wind speed of the square nozzle is maintained farther than that of the round nozzle. On the other hand, in the case of a round nozzle, the angle of the blown airflow was 32 degrees even if the nozzle angle was 34 degrees. In the case of a round nozzle, since the directivity of the blown airflow is weak, the angle of the blown airflow is small.

  Since the present inventors did not predict the above results, the wind speed was measured on the extension of the nozzle axis. As the measurement was repeated many times, the position showing the maximum wind speed was not on the extended line of the axis, but was found to be different depending on the shape of the nozzle. Therefore, when the position showing the maximum wind speed was confirmed and the wind speed was measured at that position, it was found that the square nozzle was superior as described above.

  FIG. 10 is a diagram showing an airflow cover area when the blowout device 100 of the present embodiment is installed on a ceiling with a general height. (For example, assume that an air outlet device is installed on a ceiling with a height of about 3 m and the range in which the airflow reaches around the height of a person's shoulder when sitting is calculated.) Two task outlets 200 are attached. Even when the air outlet apparatus 100 is installed between office workers, the entire body of each office worker enters the cover area. Therefore, even if the office layout is changed, it is only necessary to change the direction of the nozzle unit 210 while keeping the installation position of the outlet device 100 as it is.

(4) A shielding plate 340 is provided in the cylindrical hole of the inner cylindrical portion 310. Unless the space between the inner tube portion 310 and the nozzle portion 210 is shielded, air leaks from between the inner tube portion 310 and the nozzle portion 210 as shown in FIG. 11, for example. The air leaking from between the inner cylinder part 310 and the nozzle part 210 is expected to flow vertically downward. This will be referred to as leakage airflow. Even if the airflow is blown from the nozzle unit 210 at a desired angle, the blown airflow is obstructed by the vertically downward leaking airflow and immediately becomes a downward airflow. In this respect, since the shielding plate 340 is provided in the present embodiment, the airflow blown from the nozzle unit 210 blows out at a desired angle without being obstructed by anything.

(5) In this embodiment, the maximum inclination angle of the nozzle part 210 is regulated by causing the wide-mouth opening 240 to be caught on the edge of the outer hole 372 (see, for example, FIG. 7). In the present embodiment, as shown in FIG. 7, a strong air current is blown at a large angle by reflecting the air current on the inner surface of the task air flow path 230.
However, this effect may be diminished if reflections occur in the task air flow path 230 many times in a complex manner. For example, as shown in FIG. 12, if the inclination angle of the nozzle portion 210 is excessively increased (here, it is drawn at 45 degrees), a plurality of reflections are generated in the task air flow path 230, and the airflow is generated. May be complicated. Since the length of the task air flow path 230 is balanced with the opening area, it is impossible to specify the upper limit angle. However, the length of the task air channel 230, the opening area, and the like so that the main air stream enters the task air channel 230, is reflected only once on the inner surface, and can be smoothly blown out from the outlet without interference thereafter. It is preferable to design the maximum inclination angle.

  It is meaningless if the airflow blown from the task air flow path 230 hits the inner surface of the inner cylinder part 310 when the inclination of the nozzle part 210 is increased. Therefore, it is necessary to regulate the maximum angle of the nozzle part 210 so that the airflow blown out from the task air flow path 230 does not hit the inner surface of the inner cylinder part 310.

  If the outlet of the task air flow path 230 is located at the same height as or lower than the lower end of the inner cylinder part 310 (which may be referred to as the lower panel part 120), such a restriction is eliminated. There can be various methods such as lengthening the task air flow path 230 or lowering the support position of the pitch axis PX. For example, as shown in FIG. 13, if the position of the shielding plate 340 is lowered, the support positions of the support pieces 342 and 342 and the pitch axis PX are lowered, and the inner surface of the inner cylinder portion 310 does not interfere with the blown airflow. . (It is not always necessary to lower the entire shielding plate 340. Alternatively, only the support position of the pitch axis PX may be lowered.)

  It is preferable that the maximum inclination angle of the nozzle part 210 be set to about 35 degrees. For example, even if the inclination angle of the nozzle part 210 can be set to 40 degrees or 45 degrees, the distance from the air outlet device to the floor (or a worker) is long by going straight at this angle. Although the nozzle part 210 can tilt up to 45 degrees, in reality, it is expected that the airflow will not reach the office worker at 45 degrees. Rather than trying to force the airflow cover area wide, it is better to increase the number of air outlet devices appropriately and place them properly on the ceiling.

(6) The air outlet device 100 of the present embodiment has a simple structure as compared with the conventional product, and can greatly reduce the manufacturing cost. For example, the outer cylindrical portion 360 and the inner cylindrical portion 310 are basically cylindrical, and may be deep drawn if made of metal, or may be a simple mold even if made of resin. In the present embodiment, the rotation axes (PX, YX) are separated into two, but the structure of the tilting around the pitch axis PX and the rotation around the yaw axis YX are simple. There is no such thing as using universal joints or preparing and assembling many parts unlike conventional products. For example, when a pivot joint (ball joint) is used as a universal joint, high machining accuracy is required.
In this respect, in the present embodiment, the tilting around the pitch axis and the rotation around the yaw axis are simple in structure, so that an excessively high machining accuracy is not required. As a result, the blowout device 100 can be manufactured at a much lower cost.

(Modification 1)
In the first embodiment, the task air flow path 230 has a prismatic shape (square prism shape). What is important here is that the airflow that has flowed into the task air flow path 230 is strongly reflected by the plane in the task air flow path 230 in the blowing direction. The task air flow path 230 may not be prismatic (square prismatic) as long as the same function and effect can be exhibited. In short, it is sufficient that there is at least one plane parallel to the pitch axis PX. The task air flow path 230 may have a triangular prism shape (FIG. 14) or a semi-cylindrical shape (FIG. 15), whether it is actually meaningful or easy to make. However, it may be inconvenient if there is only one plane parallel to the pitch axis PX. For example, suppose that it is desired to change the posture from the state inclined rightward as shown in FIG. 16A to the leftward inclination as shown in FIG. In this case, in addition to rotation (tilting) around the pitch axis, it is necessary to rotate 180 degrees around the yaw axis (FIG. 16C). In short, the side (surface) parallel to the pitch axis PX must be located downward. (For convenience, in FIG. 16, the pitch axis PX is drawn in the vertical direction, but this is a measure for making the drawing easier to see.)

(Modification 2)
In the first embodiment, the nozzle body 220 has a short cylindrical shape. It is desired that the gap between the inner hole 341 and the nozzle body 220 does not change when the nozzle unit 210 is tilted about the pitch axis. For this purpose, it is reasonable to make the outer shape of the nozzle main body 220 into a short cylindrical shape. However, the shape of the nozzle part 210 may not be limited to the short cylindrical shape as long as the gap between the nozzle part 210 and the inner cylinder part 310 can be appropriately shielded. For example, as shown in FIG. 17, the outer shape of the nozzle part 210 may be a prismatic shape. In this case, for example, if the pitch axis PX and the shielding plate 340 are substantially at the same height, the gap between the inner hole 341 and the nozzle portion 210 can be kept from changing much even if the nozzle portion 210 is tilted.

(Modification 3)
In the above embodiment, the square hole penetrating the nozzle main body 220 is referred to as the task air flow path 230. However, the air flow path penetrating the nozzle main body 220 and the outlet edge 250 is combined to be referred to as “task air flow path 230”. You may think. For example, due to a design change such as shortening the diameter of the nozzle main body 220, the task air flow path 230 cannot be sufficiently secured by the through hole of the nozzle main body 220 alone. In this case, the length (length) of the outlet edge 250 may be increased (lengthened) to increase the length of the task air flow path 230. Further, as shown in FIG. 18, an intermediate portion 260 is provided between the wide-mouth opening 240 and the nozzle main body 220, and a hole penetrating the intermediate portion 260, the nozzle main body 220, and the outlet edge 250 is formed as a task air flow path. 230 may be used.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
In the second embodiment, an ambient outlet is further provided. FIG. 19 is a diagram illustrating a state in which the air outlet device 400 according to the second embodiment is installed on the ceiling. In addition to the task airflow from the task blowout unit 200, the ambient airflow blows out evenly from the space between the chamber box 110 and the lower panel 120.
FIG. 20 is a view showing a state in which the chamber box 110 is removed from the lower panel portion 120.
The chamber box 110 has an outer cone portion 113 spreading at its lower end at its lower end. The lower panel portion 120 also has an inner cone portion 122 that spreads downward toward the bottom on the outer periphery thereof. When the lower panel portion 120 is attached to the lower surface opening 111 of the chamber box 110, a gap is left between the outer cone portion 113 and the inner cone portion 122. The gaps are ambient outlets 151, 152, 153, and 154.

  Now, in the lower panel portion 120, four side walls 131, 132, 133, and 134 are erected along the outer periphery in the vicinity of the outer periphery. Now, as shown in FIGS. 19 and 20, it is assumed that a connection port 112 is provided on the side surface in front of the chamber box 110. That is, the conditioned air from the duct 500 is sent into the chamber box 110 from the front side of the chamber box 110. At this time, of the four side walls 131, 132, 133, and 134 erected on the lower surface panel unit 120, the side wall opposite to the connection port 112 is defined as the first side wall 131. A side wall on the same side as the connection port 112 is defined as a second side wall 132. The remaining two sheets are referred to as a third side wall 133 and a fourth side wall 134. That is, the third side wall 133 and the fourth side wall 134 are located in a direction orthogonal to the air direction of the conditioned air flowing from the connection port 112.

When the lower panel portion 120 is attached to the lower opening 111 of the chamber box 110, a slight gap is formed between the inner wall surface of the chamber box 110 and the side walls 131, 132, 133, and 134.
These gaps will be referred to as ambient air channels 141, 142, 143, and 144.
The air flow path between the first side wall 131 and the inner wall of the chamber box 110 is defined as a first ambient air flow path 141.
The air flow path between the second side wall 132 and the inner wall of the chamber box 110 is defined as a second ambient air flow path 142.
The air flow path between the third side wall 133 and the inner wall of the chamber box 110 is a third ambient air flow path 143.
The air flow path between the fourth side wall 134 and the inner wall of the chamber box 110 is defined as a fourth ambient air flow path 144.

The ambient air flow paths 141, 142, 143, 144 communicate with the ambient outlets 151, 152, 153, 154.
The ambient outlet that communicates with the first ambient air flow path 141 is referred to as a first ambient outlet 151.
The ambient outlet that communicates with the second ambient air flow path 142 is referred to as a second ambient outlet 152.
An ambient outlet that communicates with the third ambient air flow path 143 is referred to as a third ambient outlet 153.
The ambient outlet that communicates with the fourth ambient air flow path 144 is referred to as a fourth ambient outlet 154.

  The ambient air flow paths 141, 142, 143, 144 and the ambient air outlets 151, 152, 153, 154 constitute an ambient air outlet.

  The height of the first side wall 131 is T1, the height of the second side wall 132 is T2, the height of the third side wall 133 is T3, and the height of the fourth side wall 134 is T4. At this time, T1 <T2 <T3 (= T4). That is, the first side wall 131 on the side opposite to the connection port 112 is the lowest, and the second side wall 132 on the same side as the connection port 112 is higher than the first side wall 131. The remaining two third side walls 133 and fourth side walls 134 are higher than the second side wall 132. In the present embodiment, T1 = 14 mm, T2 = 40 mm, and T3 = T4 = 60 mm.

The effect by the side walls 131, 132, 133, 134 will be described.
When the conditioned air blows out from the ambient outlets 151, 152, 153, and 154, the conditioned air passes through the ambient air channels 141, 142, 143, and 144. The conditioned air is strongly directed in the direction along the ambient air flow paths 141, 142, 143, and 144 while passing through the ambient air flow paths 141, 142, 143, and 144. The strength of orientation by the ambient air flow paths 141, 142, 143, 144 is not necessarily proportional to the length of the ambient air flow paths 141, 142, 143, 144, but is considered to have a positive correlation. .

FIG. 21 shows a model of the airflow in the chamber box 110.
(The actual airflow is more complicated, but has been simplified for the sake of explanation for the purpose of explaining the effects of the present invention.)
Now, the duct connection port 112 is on the side surface of the chamber box 110. The conditioned air is vigorously supplied to the chamber box 110 from the connection port 112. The conditioned air supplied to the chamber box 110 hits the inner wall facing the connection port 112, and as the main airflow, it is expected to fall downward along the inner wall surface.
A part of the airflow flows into the first ambient air flow path 141, is vertically oriented in the first ambient air flow path 141, and then blows out from the first ambient air outlet 151. Here, the airflow flowing into the first ambient air flow path 141 originally has a vector component having a strong force in the vertical downward direction. Therefore, the first ambient air flow path 141 is made relatively shorter than the other ambient air flow paths 142, 143, and 144.

It is expected that part of the airflow that hits the inner wall facing the connection port 112 will bounce off and hit the inner wall on the connection port 112 side, descend downward along this wall, and reach the second ambient air flow path 142. Then, a vertically downward orientation is applied in the second ambient air flow path 142, and the air is blown out from the second ambient air outlet 152. The vertical downward vector of the airflow flowing into the second ambient air flow path 142 is expected to be relatively weak compared to the airflow flowing into the first ambient air flow path 141.
Therefore, in order to make the wind speed of the airflow passing through the first ambient air flow path 141 and the wind speed of the airflow passing through the second ambient air flow path 142 substantially the same, the second ambient air flow path 142 is changed to the first ambient air flow path 141. Make it relatively longer.

The flow of the airflow reaching the third ambient air flow path 143 and the fourth ambient air flow path 144 is complicated and difficult to say in general. However, it is expected that the third ambient air flow path 143 and the fourth ambient air flow path 144 will reach the third ambient air flow path 144 through a plurality of rebounds on the inner wall facing the connection port 112, the ceiling, and the left and right inner walls. (Here, the left and right refer to the left and right on the paper surface of FIGS. 20 and 21.)
In this case, it can be expected that the airflow that has reached the third ambient air flow path 143 and the fourth ambient air flow path 144 has almost no vertically downward vector. Therefore, in order to match the wind speed with the air flow passing through the first ambient air flow path 141 and the second ambient air flow path 142, it is necessary to lengthen the third ambient air flow path 143 and the fourth ambient air flow path 144.

  By adjusting the heights of the side walls 131, 132, 133, 134 (T1, T2, T3, T4), that is, the lengths of the ambient air flow paths 141, 142, 143, 144, respectively, It is possible to equalize the wind speed of the blown airflow that exits from the ambient outlets 151, 152, 153, and 154.

Just because the ambient outlet is open in all directions as in the prior art, it does not necessarily mean that the ambient outlet is evenly distributed in all directions. If there is a drift in the ambient airflow, it may be hot in some places in the living room and cold in some places.
In this regard, as described above, the lengths of the first to fourth ambient air flow paths 141, 14, 143, and 144 are adjusted in consideration of the position of the connection port 112 and the airflow in the chamber box 110. This makes it possible to equalize the speed of the airflow coming out of the ambient outlets 151, 152, 153, 154. In this way, the ambient air flow is evenly arranged, so that the temperature in the room becomes uniform.

Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
In order to improve space efficiency, two or more, for example, three or four task outlets 200 may be attached to one lower panel 120.

The structure of the nozzle support part 300 is not limited to the above as long as the nozzle part can be rotatably supported around the yaw axis YX.
For example, if the first flange portion can be rotatably attached to the attachment hole, a structure in which the lower surface panel portion is sandwiched between the two flange portions is not essential.
(There can be various other examples such as making a circular groove around the mounting hole and engaging the pin protruding from the first flange with the groove.)

  Although the case where a blower outlet apparatus is installed in a ceiling was illustrated, you may attach to a wall depending on the case.

DESCRIPTION OF SYMBOLS 100 ... Air outlet apparatus, 110 ... Chamber box, 111 ... Lower surface opening, 112 ... Connection port, 113 ... Outer cone part, 120 ... Lower surface panel part, 121 ... Mounting hole, 122 ... Inner cone part, 131, 132, 133, 134: Side walls, 141, 142, 143, 144 ... Ambient air flow path, 151, 152, 153, 154 ... Ambient outlet, 200 ... Task outlet, 210 ... Nozzle part, 220 ... Nozzle body part, 221 ... Male thread, 230 ... task air flow path, 235 ... opening, 240 ... wide-mouth opening, 250 ... outlet edge, 260 ... middle part, 300 ... nozzle support part, 310 ... inner cylinder part, 311 ... first flange part 320 ... Inner cylinder main body part, 321 ... Inverted L-shaped member, 340 ... Shielding plate, 341 ... Inner hole, 342 ... Bearing piece, 344 ... Boss, 360 ... Outer cylinder part, 361 ... Second flange portion, 370 ... outer cylinder main body, 371 ... lid, 372 ... outer hole 373 ... elongated hole, 400 ... outlet device, 500 ... ducts, PX ... pitch axis, YX ... yaw axis.

Claims (6)

Has a circular mounting hole, and a panel portion to be fitted in the room of ceiling,
A nozzle unit that blows out conditioned air individually toward a task area in which a worker is present in the room;
A nozzle support part for supporting the nozzle part, comprising:
The nozzle part has a task air channel that is a cylindrical hole that passes through the nozzle part, and is supported to be tiltable by a pitch axis parallel to a horizontal plane .
The task air flow path is a prismatic cylindrical hole having at least one flat surface parallel to the pitch axis on the inner wall surface thereof.
The nozzle portion communicates with the task air flow path, and has a wide-mouth opening that widens the entrance of the task air flow path in a funnel shape,
The nozzle support portion supports the pitch axis so that the nozzle portion can tilt in the pitching direction, and further allows the nozzle portion to rotate about a yaw axis that is parallel to a vertical line. Supporting the part,
The nozzle support is
A cylindrical body that supports the nozzle portion on the inside and has a diameter smaller than the mounting hole; and
A flange portion having a diameter larger than that of the mounting hole,
The flange portion is caught on the periphery of the mounting hole, and the nozzle support portion is rotatably attached to the mounting hole of the panel portion,
The cylinder main body has a lid having an outer hole, and a part of the nozzle part comes out of the cylinder main body from the outer hole, and the wide mouth opening abuts on an edge of the outer hole. The maximum inclination angle of the nozzle part is regulated by
When the nozzle part is inclined to the maximum inclination angle,
The blowout device characterized in that a surface of the wide-opening portion on a side opposite to a side contacting the edge of the outer hole in the surfaces constituting the wide-opening portion is parallel to a vertical line. In the blower outlet device according to claim 1,
The task air flow path has a length of 35 mm or more. In the blower outlet device according to claim 1,
The blower outlet device, wherein the length of the task air flow path is 0.8 times or more when one side of the opening on the outlet side of the task air flow path is used as a reference. In the blower outlet device in any one of Claims 1-3,
The nozzle part has a nozzle body part whose outer shape is a short cylindrical shape,
The blowout device according to claim 1, wherein the tube main body portion has a shielding plate on its inner side so as to prevent penetration of the tube, and the shielding plate has an inner hole into which the nozzle main body portion is loosely fitted. In the blower outlet device in any one of Claims 1-4,
It has a connection port connected to the duct on the side surface, and includes a hollow chamber box that is open on one side, and a panel portion that is attached so as to close the opening of the chamber box,
The chamber box has an outer cone portion whose edge of the opening widens toward the end, the panel portion has an inner cone portion whose outer periphery spreads toward the end, and the panel portion becomes an opening of the chamber box. When attached, a gap formed between the outer cone portion and the inner cone portion becomes an ambient outlet,
The panel portion has side walls erected along the outer periphery thereof,
When the panel portion is attached to the opening of the chamber box, the side wall and the inner surface of the chamber box face each other with a gap between them,
When the side wall on the side opposite to the side with the connection port is a first side wall, and the side wall on the side surface with the connection port is a second side wall,
The height T2 of the second side wall is higher than the height T1 of the first side wall. In the blower outlet device according to claim 5,
The blower outlet device, wherein a height of the side wall on a side intersecting a side surface where the connection port is present is higher than a height of the second side wall.