JP2023149363A - Air outlet member and air conditioning system - Google Patents

Abstract

To provide an air outlet member capable of constructing an air conditioning system which supplies fresh air to a user and is less likely to suck the exhalation of another user, and the air conditioning system.SOLUTION: An air outlet structure has: an intake 21 for taking in fresh air; an outlet 8 provided above the intake 21 to blow the fresh air upward; a guide part 6 with a guide surface 62 provided above the outlet 8 and allowing the fresh air blown out of the outlet 8 to rise along therewith; and a diffusion part 7 with a diffusion surface 73 for colliding and horizontally diffusing air raised and guided by the guide surface 62. The guide surface 62 is a circular arc surface which faces the front side and in which an intermediate part in a vertical direction projects forward from an upper end part and a lower end part. The diffusion surface 73 is a surface which is positioned in front of the guide surface 62 and at a height of the upper end part of the guide surface 62 and intersects with the guide surface 62. The guide part 6 can be switched between a first posture in which the guide surface 62 is positioned at the rear and is separated rearward from the diffusion surface 73 and a second posture in which the guide surface 62 is positioned at the front and an upper end part is continued to the diffusion surface 73.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air outlet member and an air conditioning system.

As an air conditioning system for an indoor facility with multiple seats on a stepped floor, an air outlet is provided in the step part of the floor surface, and the air blown out from the air outlet is raised along the backrest of the seat. BACKGROUND ART Air conditioning systems that generate upward airflow are known (for example, see Patent Document 1).

Japanese Patent Application Publication No. 7-247709

In recent years, an infectious disease caused by the new coronavirus has occurred, and there are concerns about the spread of the disease through droplet infection and airborne infection in facilities where an unspecified number of people gather. For this reason, in order to prevent the spread of infectious diseases through droplets and airborne infections in facilities where an unspecified number of people gather, we have built an air conditioning system that supplies fresh air to users and makes it difficult for them to breathe in the exhaled air of other users. There is a need to.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an air outlet member and an air conditioning system that can supply fresh air to users and construct an air conditioning system that makes it difficult for the users to breathe in the exhaled air of other users.

In order to achieve the above object, an air outlet member according to the present invention is provided with an air outlet member that faces forward on a step in front of one seat in a facility where a plurality of seats are provided on a stepped floor that becomes lower from the rear to the front. an intake port that is attached to a supply port that supplies fresh air provided on a surface and takes in the fresh air; and an intake port that is provided above the intake port and that draws the fresh air supplied to the intake port upward. A guide portion including an air outlet for blowing out air, a guide surface provided above the air outlet and along which the fresh air blown out from the air outlet rises, and causing the air that has risen while being guided by the guide surface to collide with each other. a diffusion part having a diffusion surface that causes diffusion in the horizontal direction, the guide surface being an arcuate surface facing forward and having an intermediate portion in the vertical direction protruding further forward than the upper end and the lower end; The diffusion surface is located in front of the guide surface and at the height of the upper end of the guide surface, and is a surface that intersects with the guide surface, and the guide part is located in front of the guide surface and at the height of the upper end of the guide surface, and the guide part is located in front of the guide surface and at the height of the upper end of the guide surface. It is possible to switch between a first posture in which the guide surface is located at a rearward position, and a second posture in which the guide surface is located forward and an upper end portion is continuous with the diffusion surface.

In order to achieve the above object, an air conditioning system according to the present invention provides an upright surface facing forward on a step in front of one seat in a facility where a plurality of seats are provided on a stepped floor that becomes lower from the rear to the front. The outlet member includes an intake port for taking in the fresh air, and an air outlet member installed above the intake port for supplying fresh air. an outlet for blowing out the fresh air supplied to the mouth upward; a guide portion provided above the outlet and along which the fresh air blown out from the outlet rises; a diffusion section that includes a diffusion surface that causes the air that has risen while being guided by the surface to collide with each other to spread it in the horizontal direction, the guide surface facing forward and having an intermediate portion in the vertical direction as an upper end portion and a lower end portion; , the diffusion surface is a surface located in front of the guide surface and at the height of the upper end of the guide surface, and intersects with the guide surface, and the guide portion is It is possible to switch between a first attitude in which the guide surface is located at the rear and separated from the rear of the diffusion surface, and a second attitude in which the guide surface is located in the front and the upper end portion is continuous with the diffusion surface.

In the present invention, the fresh air supplied from the supply port and taken into the inside of the outlet member from the intake port rises along the guide surface that is an arcuate surface that projects forward, that is, is convex toward the front. When fresh air rises along the guide surface, the air in front of the guide surface is drawn in, increasing the air volume. This allows a large amount of fresh air to reach the facility user sitting on the seat, making it possible to construct an air conditioning system that is less likely to inhale the exhaled air of other users. As a result, the ventilation efficiency of the auditorium where seats are provided will be improved, and it will be possible to prevent the spread of micro droplets and airborne infections of infectious diseases in the facility.
When the guide part is in the first position, the fresh air rising along the guide surface does not collide with the diffusion surface and is not diffused, so that the user sitting on the seat can feel the airflow due to the jet of rising fresh air. Can be done. When the guide part is in the second attitude, the fresh air rising along the guide surface collides with the diffusion surface and is diffused, so that the fresh air can be spread over a wide range. When the guide part is in the second position, the force of fresh air reaching the user is smaller than when the guide part is in the first position. Therefore, when the user wants to feel the airflow sensation due to a jet of fresh air, the guide surface is set to the first position, and when the user does not need a jet of fresh air, the guide section is set to the second position. It is preferable to do so. Since the guide portion can be switched between the first posture and the second posture, it is possible to form an airflow environment according to the user's preference.

Moreover, in the air outlet member according to the present invention, the front edge of the diffusion surface may have an arcuate shape in which the intermediate portion projects further forward than the side end portions when viewed from the up and down direction.

With such a configuration, the direction in which the air that rises and collides with the diffusion plate expands, and can be further diffused.

Further, in the air outlet member according to the present invention, a pair of side plate portions are provided on both sides of the guide surface, and the guide surface is disposed between the rear sides of the pair of side plate portions when in the first posture. and when in the second position, the second position may be disposed between the front edges of the pair of side plate parts.

With this configuration, when the guide section assumes the first position, the pair of side plates prevents the air rising along the guide surface from spreading laterally, allowing fresh air to flow to the user seated in the seat. can be reached.

Further, in the air outlet member according to the present invention, the guide portion is provided at a lower portion and rotates around a rotation axis extending horizontally along the upright surface to change the first attitude and the second attitude. It may be configured to switch.

With such a configuration, the guide portion can be easily switched between the first attitude and the second attitude. The mechanism for switching the guide portion between the first attitude and the second attitude can be of a simple structure, and manufacturing and maintenance can be facilitated.

Moreover, in the air outlet member according to the present invention, the first attitude and the second attitude of the guide portion may be switchable from above.

With this configuration, a user sitting on the seat can easily switch the guide portion between the first attitude and the second attitude from above the air outlet member.

Further, the outlet member according to the present invention may include a projecting plate located above the intake port and protruding forward from the intake port.

With this configuration, if dirt or liquid gets into the inside of the outlet member, the dirt or liquid will hit the protruding plate, preventing the dirt or liquid from entering the supply port from the intake port. can be prevented.

Further, in the air outlet member according to the present invention, the lower end portion may be provided with a lower plate portion in which a hole penetrating in the vertical direction is formed.

With such a configuration, when dust, liquid, etc. enter the inside of the blow-off port member, the dust, liquid, etc. can be discharged from the hole to the outside of the blow-off port member.

According to the present invention, it is possible to construct an air conditioning system that supplies fresh air to users and makes it difficult for the users to breathe in the exhaled air of other users.

1 is a diagram illustrating an air conditioning system according to an embodiment of the invention. It is a perspective view of an air outlet member. FIG. 3 is a front view of the air outlet member viewed from the front. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3, and is a cross-sectional view of the air outlet member in a first attitude. FIG. 3 is a rear view of the air outlet member seen from the rear. FIG. 3 is a view of the air outlet member viewed from above. It is a sectional view of the air outlet member in a second attitude. FIG. 3 is a diagram showing an outline of an experiment for evaluating the F value. FIG. 3 is a diagram showing an outline of an experiment for evaluating contribution. It is a graph showing experimental results of F value. It is a graph showing experimental results of contribution. 3 is a table showing measured values of wind speed and temperature. It is a contour diagram of wind speed distribution.

Hereinafter, an air outlet member and an air conditioning system according to an embodiment of the present invention will be described based on FIGS. 1 to 7.
As shown in FIG. 1, the air outlet member 1 according to this embodiment is provided at a supply port 13 of an air conditioning system 12 in an indoor facility 11. The indoor facility 11 is, for example, a facility that accommodates spectators, such as an indoor stadium or an arena. The indoor facility 11 may be a movie theater, a theater, or the like. The supply port 13 blows fresh air into the space in the indoor facility 11 where spectators are accommodated.

The indoor facility 11 has a stepped floor 14 and a large number of seats 15 provided on the stepped floor 14. Seat 15 is shown in FIG. The direction in which the steps of the step bed 14 are continuous is referred to as the front-rear direction. In the front-rear direction, the side where the step bed 14 is lower is referred to as the front side, and the side where the step bed 14 is higher is referred to as the rear side. A horizontal portion of the stepped floor 14 is referred to as a horizontal portion 141, and a portion extending in the vertical direction is referred to as an upright portion 142. The surface of the upright portion 142 is referred to as a upright surface 143. The front surface of the upright surface 143 faces forward. The horizontal direction perpendicular to the front-rear direction is referred to as the width direction. In the drawings, the width direction is indicated by an arrow X, the front-rear direction is indicated by an arrow Y, and the up-down direction is indicated by an arrow Z.

The supply port 13 is provided on the upright surface 143. Fresh air is blown out forward from the supply port 13. The outlet member 1 is attached to the upright surface 143 and connected to the supply port 13 . A seat 15 is installed in front of the air outlet member 1. In the air conditioning system 12, the air blown out from the outlet member 1 is directed upward toward a user seated on a seat 15 installed in a horizontal section 141 that is continuous with the rear side of an upright surface 143 on which the outlet member 1 is installed. is set to reach.
One supply port 13 is provided on the front upright surface 143 of each seat 15. One blower outlet member 1 is provided in front of each seat 15.
In the following description of the outlet member 1, it is assumed that the outlet member 1 is attached to the upright surface 143 of the stepped floor 14.

As shown in FIGS. 2 to 4, the air outlet member 1 includes a back plate part 2, a pair of side plate parts 3, 3, a lower plate part 4, a front plate part 5, a guide part 6, and a diffusion part. 7. The back plate portion 2 is arranged along the upright surface 143. The pair of side plates 3, 3 are provided on both sides of the back plate 2 in the width direction. The lower plate portion 4 is provided between the lower end portions of the pair of side plate portions 3, 3. The front plate portion 5 is provided between the lower portions of the front edges of the pair of side plate portions 3, 3. The guide portion 6 is provided between the pair of side plate portions 3, 3 so as to be movable in the front-rear direction. The diffusion portion 7 is provided between the upper end portions of the pair of side plate portions 3, 3. The front view shape of the air outlet member 1 viewed from the front and rear directions is a rectangular shape extending in the vertical direction.

As shown in FIG. 5, the back plate portion 2 is flat and has a rectangular plate surface. The back plate portion 2 is fixed along the upright surface 143 with the plate surface facing in the front-rear direction and extending in the vertical direction. The lower side of the back plate portion 2 overlaps with the supply port 13. An intake port 21 is provided in the back plate portion 2 at a position overlapping with the supply port 13 . Fresh air supplied from the supply port 13 is taken into the interior of the outlet member 1 from the intake port 21. In this embodiment, the supply port 13 and the intake port 21 have a rectangular shape, but are not limited to the rectangular shape, and may be circular.

As shown in FIG. 4, the pair of side plates 3, 3 are each in the shape of a flat plate, and are provided so as to protrude forward from the back plate 2 with the plate surfaces facing in the width direction. The pair of side plates 3, 3 have substantially the same dimensions in the vertical direction as the back plate 2. The pair of side plates 3, 3 are arranged at the same height as the back plate 2. In this embodiment, the pair of side plate parts 3, 3 are fixed to the stepped floor 14 by being fixed to the upright surface 143 with L-shaped metal fittings 9. The metal fitting 9 is shown in FIG.

A notch portion 37 that opens toward the rear side is formed in the vertically intermediate portion of the side plate portion 3 . The cutout portion 37 passes through the plate surface of the side plate portion 3.
The rear edge portions 31 of the upper and lower portions of the side plate portion 3 excluding the vertical intermediate portion, that is, the portion where the notch portion 37 is formed, extend linearly in the vertical direction and are connected to the side edge portions of the back plate portion 2. has been done. The upper edge 32 and lower edge 33 of the side plate portion 3 extend linearly in the front-rear direction. The upper edge portion 32 of the side plate portion 3 extends further forward than the lower edge portion 33.

The shape of the front edge portion 34 of the side plate portion 3 is a shape in which two circular arcs are vertically connected. Of the front edge portion 34 of the side plate portion 3, the portion on the lower side and corresponding to the lower circular arc is referred to as a first curved edge portion 35, and the portion on the upper side and equivalent to the upper circular arc is referred to as a second curved edge portion. It is written as 36. The arcs of the first curved edge 35 and the second curved edge 36 are both arcs that project forward. The first curved edge 35 gradually extends forward from the bottom to the top. The first curved edge 35 has an upper end 35b located further forward than a lower end 35a. The lower end 36a of the second curved edge 36 is located below the upper end 36b of the second curved edge 36 in the vertical direction. The lower end 36a of the second curved edge 36 is connected to the upper end 35b of the first curved edge 35. The upper end 36b of the second curved edge 36 is connected to the front end 32a of the upper edge 32 of the side plate 3.

A front edge 371 (an edge on the opposite side to the side facing the upright surface 143) of the notch 37 has an arcuate shape that projects forward when viewed from the width direction. As described above, the notch portion 37 passes through the side plate portion 3 in the width direction. Therefore, one side and the other side in the width direction of the side plate portion 3 communicate with each other via the notch portion 37.

The lower plate portion 4 has a flat plate shape. The lower plate portion 4 is arranged with the plate surface being a horizontal surface. An edge on one side in the width direction of the lower plate portion 4 is connected to a lower edge 33 of the side plate portion 3 disposed on one side in the width direction. The edge on the other side in the width direction of the lower plate part 4 is connected to the lower edge 33 of the side plate part 3 disposed on the other side in the width direction. A rear edge portion of the lower plate portion 4 is connected to a lower edge portion of the back plate portion 2. The front edge of the lower plate 4 is connected to the lower edge of the front plate 5.

The front plate part 5 is provided along the first curved edge part 35 between the first curved edge parts 35 which are the lower side of the front edge part 34 of each of the pair of side plate parts 3. The front plate portion 5 has an arcuate plate shape corresponding to the first curved edge portion 35 . The front plate part 5 is arranged in front of the intake port 21 of the back plate part 2 at a distance.

As shown in FIGS. 2 to 4 and 6, the diffusion part 7 is a fixed plate part connected to the vicinity of the upper end of the front edge part 34 of the pair of side plate parts 3, that is, the vicinity of the upper end of the second curved edge part 36. 71, and a protruding plate part 72 that protrudes forward from the upper edge of the fixing plate part 71. The fixed plate portion 71 has a flat plate shape with a rectangular plate surface. An edge on one side in the width direction of the fixed plate part 71 is connected to the second curved edge 36 of the side plate part 3 on one side in the width direction. The edge on the other side in the width direction of the fixed plate part 71 is connected to the second curved edge 36 of the side plate part 3 on the other side in the width direction. The upper end of the fixed plate part 71 is arranged slightly below the upper edge part 32 of the side plate part 3. The protruding plate part 72 extends from the upper end of the fixed plate part 71 toward the front side in an oblique direction that gradually moves upward. The downwardly facing surface of the protruding plate portion 72 is referred to as a diffusion surface 73.

The front plate part 5 and the diffusion part 7 are arranged with an interval in the vertical direction. For this reason, an opening that opens in the front-rear direction is provided between the front plate part 5 and the diffusion part 7 between the pair of side plate parts 3. The front edge portion 731 of the diffusion surface 73 has an arcuate shape in which the center portion in the width direction protrudes more forward than both sides in the width direction.

As shown in FIGS. 2 and 4, the guide portion 6 is formed into an arcuate plate shape. The guide part 6 is arranged so that the plate surface faces forward and backward. The guide portion 6 is disposed in an arc-shaped direction that extends toward the front when viewed from the width direction. The guide portion 6 is rotatable around a rotation shaft 611 of the shaft portion 61, the lower end of which is attached to the pair of side plates 3, 3. The rotation shaft 611 extends in the width direction. The shaft portion 61 is arranged above the intake port 21 of the back plate portion 2 with a slight interval therebetween. The lower end portion of the guide portion 6 is arranged slightly above the intake port 21 of the back plate portion 2, that is, slightly above the supply port 13. The lower end portion 6b of the guide portion 6 is arranged between the back plate portion 2 and the front plate portion 5.
The upper end portion 6b of the guide portion 6 is arranged at approximately the same height as the upper end portions of the pair of side plate portions 3, 3.

The guide part 6 has a position between a first position shown in FIG. 4 in which the upper end part 6b contacts the upper end part of the back plate part 2 and a second position shown in FIG. , can be rotated around a rotation axis 611. The front surface of the guide portion 6 is referred to as a guide surface 62.

The switching operation between the first posture and the second posture of the guide section 6 is performed by the administrator or the user of the indoor facility 11 by grasping the upper end of the guide section 6 from above the air outlet member 1 or by using the tip of the foot. This is possible by moving it back and forth.

The guide part 6 is arranged so that its lower side overlaps the rear of the front plate part 5. When the guide section 6 is in either the first posture or the second posture, the lower side of the guide section 6 and the front plate section 5 are separated from each other in the front-rear direction. Fresh air supplied from the supply port 13 and taken into the blow-off port member 1 from the intake port 21 is blown upward from the gap between the lower side of the guide portion 6 and the front plate portion 5. The distance between the lower side of the guide portion 6 and the front plate portion 5 is the air outlet 8 of the air outlet member 1 . The air outlet 8 opens in the vertical direction and is sandwiched between the pair of side plates 3, 3 from the width direction.

When the guide portion 6 is in the first attitude, the guide portion 6 is arranged behind the front edge portions 34 of the pair of side plate portions 3, 3. At this time, the pair of side plate parts 3, 3 protrude further forward than the guide part 6. The guide portion 6 is disposed between the front edge portions 34 of the pair of side plate portions 3, 3 when in the second posture. The distance between the guide portion 6 and the front plate portion 5 in the first position is larger than the distance between the guide portion 6 and the front plate portion 5 in the second position. That is, the air outlet 8 when the guide part 6 is in the first attitude has a larger opening area than the air outlet 8 when the guide part 6 is in the second attitude.

As shown in FIG. 4, fresh air A1 taken into the air outlet member 1 from the intake port 21 collides with the rear surface of the front plate portion 5 and heads upward, and is blown out from the air outlet 8 upward. Ru. Air A2 blown upward from the air outlet 8 rises along the guide surface 62 due to the Coanda effect. At this time, since the air A3 in front of the guide surface 62 is caught in the air A2 rising along the guide surface 62, the volume of the air rising along the guide surface 62 is greater than the volume of air blown out from the air outlet 8.

When the guide part 6 is in the first attitude, the air A2 rising along the guide surface 62 is sent out in an oblique direction upward and rearward from the upper end 6b of the guide part 6. The air outlet member 1 of the present embodiment is configured such that when the guide portion 6 is in the first position and the volume and velocity of fresh air supplied to the air outlet member 1 are at predetermined positions, The air sent out diagonally upward and rearward is set to reach the height of the mouths of the people seated on the seats 15 installed on the rear side of the air outlet member 1.

When the guide section 6 is in the second attitude, the air A2 that has ascended the guide surface 62 collides with the diffusion surface 73 of the diffusion section 7 . The fresh air that has ascended the guide surface 62 and collided with the diffusion surface 73 is diffused diagonally upward. In this embodiment, since the front edge 731 of the diffusion surface 73 has an arcuate shape that projects forward, the air that collides with the diffusion surface 73 is diffused forward and laterally. When the guide portion 6 is in the second attitude, the air rising along the guide surface 62 can be diffused in a substantially horizontal direction.

In this embodiment, one air outlet member 1 is provided in front of each of the many seats 15. Therefore, the user sitting on the seat 15 can adjust the wind speed of the air supplied to him/her by switching the guide section 6 of the air outlet member 1 in front.

As shown in FIG. 4, a protruding plate 22 is provided along the upper edge and side edge of the intake port 21 of the back plate 2 and protrudes forward from the back plate 2. As shown in FIG. A portion of the protrusion plate 22 provided along the upper edge of the intake port 21 is inclined gradually upward from the rear side toward the front side. A slit 41 is formed in the lower plate portion 4, extending in the width direction and penetrating in the vertical direction. The slit 41 corresponds to a hole in the present invention.
When dust or liquid enters the inside of the outlet member 1, the dust or liquid hits the protruding plate 22, so that the dust or liquid is prevented from entering the supply port 13 from the intake port 21. Ru. The protruding plate 22 is provided as a drainer. Furthermore, if dirt or liquid falls below the protruding plate 22, it is discharged downward through the slit 41 formed in the lower plate part 4.

Next, the functions and effects of the air outlet member 1 and the air conditioning system 12 according to the present embodiment described above will be explained.
In the outlet member 1 and the air conditioning system 12 according to the present embodiment described above, the fresh air supplied from the supply port 13 and taken into the interior of the outlet member 1 from the intake port 21 is formed on a circular arc surface that is convex toward the front. It ascends along a certain guide surface 62. When the fresh air rises along the guide surface 62, the air in front of the guide surface 62 is drawn in, so the air volume increases. As a result, a large amount of fresh air can reach the users of the indoor facility 11 who are seated on the seats 15, and an air conditioning system 12 that is difficult to inhale the exhaled air of other users can be constructed. As a result, the ventilation efficiency of the spectator seats where the seats 15 are provided is improved, and the spread of micro droplet infection and airborne infection of infectious diseases in the indoor facility 11 can be prevented.

When the guide portion 6 is in the first position, the fresh air rising along the guide surface 62 does not collide with the diffusion surface 73 and is not diffused, so that the user sitting on the seat feels the airflow due to the jet of rising fresh air. can be obtained. When the guide part 6 is in the second attitude, the fresh air rising along the guide surface 62 collides with the diffusion surface 73 and is diffused, so that the fresh air can be spread over a wide range. When the guide part 6 is in the second position, the force of fresh air reaching the user is smaller than when the guide part 6 is in the first position. Therefore, when the user wants to feel the airflow from a jet of fresh air, the guide surface is placed in the first position, and when the user does not need a jet of fresh air, the guide section 6 is placed in the second position. It is preferable to A case where a jet of fresh air A1 is not required is a case where a person prefers a situation where there is no wind, such as when the person feels cold when exposed to a breeze of fresh air.
Since the guide portion 6 can be switched between the first posture and the second posture, it is possible to form an airflow environment according to the user's preference.

Further, in the air outlet member 1 according to the present embodiment, the front edge 731 of the diffusion surface 73 has an arcuate shape in which the middle portion extends further forward than the side end portions when seen from the vertical direction.
With such a configuration, the direction in which the air that has risen and collided with the diffusion surface 73 expands in the direction in which it travels can be further diffused.

Further, in the air outlet member 1 according to the present embodiment, a pair of side plate portions 3, 3 are provided on both sides of the guide surface 62, and when the guide surface 62 is in the first posture, the pair of side plate portions 3, 3 are disposed on both sides of the guide surface 62. It is arranged between the rear sides, and when in the second position, it is arranged between the front edges of the pair of side plate parts 3, 3.
With such a configuration, when the guide part 6 assumes the first position, the pair of side plates 3, 3 can prevent the air rising along the guide surface 62 from spreading laterally, allowing fresh air to flow into the seat. It is possible to reach the user who is seated in the seat.

Further, in the air outlet member 1 according to the present embodiment, the guide portion 6 is provided at the lower part and rotates around a rotation shaft 611 that extends horizontally along the upright surface 143 to change the first attitude and the second attitude. is configured to switch.
With such a configuration, the guide portion 6 can be easily switched between the first attitude and the second attitude. The mechanism for switching the guide portion 6 between the first attitude and the second attitude can be of a simple structure, and manufacturing and maintenance can be facilitated.

Further, in the outlet member 1 according to the present embodiment, the first attitude and the second attitude of the guide portion 6 can be switched from above the outlet member 1.
With this configuration, a user sitting on the seat 15 can easily switch the guide portion 6 between the first attitude and the second attitude from above the air outlet member 1.

Further, the outlet member 1 according to the present embodiment is provided with a protrusion plate 22 that is provided along the upper edge and side edge of the intake port 21 and protrudes forward from the back plate portion 2 .
With this configuration, when dust or the like enters the inside of the air outlet member 1, the dust or the like hits the protruding plate 22, thereby preventing the dust or the like from entering the supply port 13 from the intake port 21. can.

Further, in the air outlet member 1 according to the present embodiment, a slit 41 is formed in the lower plate portion 4 to penetrate in the vertical direction.
With such a configuration, when dust or the like enters the inside of the air outlet member 1, the dust or the like can be discharged from the slit 41 to the outside of the air outlet member 1. The inside of the outlet member 1 can always be kept clean.

An experiment was conducted to evaluate ventilation performance in an air conditioning system provided with the outlet member according to this embodiment.
In the experiment, CO ₂ was used as a tracer gas. The following F value and degree of contribution were evaluated.
F value: How much of someone else's breath is inhaled.
Contribution rate: How much fresh air is inhaled from the outlet.

The F value is expressed by the following formula (1). Figure 8 shows the experimental method for determining the F value.

The contribution (ε) is expressed by the following equation (2). Figure 9 shows the experimental method for determining the F value.

Regarding the F value, a comparison was made between an air conditioning system that employs the outlet member 1 of this embodiment and a jet system in which the guide portion 6 is in the first position, and a conventional system that supplies air from above the seat.
Concerning the degree of contribution, the air conditioning methods employing the outlet member 1 of this embodiment include the jet method in which the guide part 6 is in the first position, the diffusion method in which the guide part 6 is in the second position, and the conventional method in which air is supplied from above the seat. We compared the method.

As shown in FIG. 10, by using the jet flow method, the F value can be reduced by 25% to 40% compared to the conventional method, making it difficult to inhale the exhaled air of other spectators.
As shown in FIG. 11, it can be seen that by using the jet flow method and the diffusion method, the degree of contribution can be increased from 1.6 times to twice that of the conventional method, and fresh air can be supplied efficiently.

Environmental variable performance was confirmed by measuring airflow distribution.
Figure 12 shows the results of wind speed distribution measurement and temperature distribution measurement. Figure 13 shows a contour diagram of wind speed distribution measurement. As shown in FIGS. 12 and 13, it can be seen that in the air conditioning system that employs the outlet member 1 of this embodiment, both the jet system and the diffusion system can supply fresh air to the height of the user's mouth. In particular, it can be seen that the jet method can supply fresh air toward the user's mouth better than the diffusion method.

Although the embodiments of the outlet member according to the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit thereof.
For example, in the above embodiment, the front edge portion 731 of the diffusion surface 73 has an arc shape in which the middle portion extends forward than the side edge portions when viewed from the top and bottom, but the front edge portion 731 has a linear shape extending in the width direction or a plurality of arcuate shapes extending in the width direction. It may have a shape other than an arcuate shape, such as a shape having a concave portion or a convex portion. The direction and size of the diffusion surface 73 may be set as appropriate.

In the above embodiment, the guide surface 62 is arranged between the rear sides of the pair of side plate parts 3, 3 in the first attitude, and between the front edges of the pair of side plate parts 3, 3 in the second attitude. However, even in the second posture, it may be placed between the rear sides of the pair of side plates 3, 3. The pair 3, 3 may always protrude in front of the guide surface 62.

In the above embodiment, the guide part 6 is configured to rotate around the rotation axis 611 to switch between the first attitude and the second attitude. The posture to be switched may be other than the above. For example, the guide portion 6 may slide to switch between the first attitude and the second attitude.
The guide portion 6 may be configured to be able to switch between the first attitude and the second attitude not from above the outlet member 1 but from the side or below.

In the embodiment described above, the protruding plate 22 is provided that protrudes forward from the back plate part 2 along the upper edge and side edge of the intake port 21, and dust etc. that have entered the inside of the outlet member 1 are removed. This prevents it from entering the supply port 13. The mechanism for preventing dust and the like that has entered the inside of the blow-off port member 1 from entering the supply port 13 may be other than the above, or may not be provided. The protruding plate 22 may be provided only along the upper edge of the intake port 21. The protruding plate 22 may be provided above the upper edge of the intake port 21 and on the side of the side edge.

In the embodiment described above, a slit 41 is formed in the lower plate part 4, and the structure is such that dust that has entered the inside of the air outlet member 1 can be discharged from the slit 41. The mechanism for discharging dust and the like that has entered the inside of the blow-off port member 1 to the outside may be other than the above, or may not be provided. In place of the slit 41 extending in the width direction, a round hole or the like may be formed in the lower plate portion 4 to discharge dust and the like to the outside.

In the embodiment described above, the notch portion 37 is formed in the side plate portion 3, but the notch portion 37 does not need to be formed in the side plate portion 3.

1 Air outlet member 3 Side plate part 4 Lower plate part 6 Guide part 7 Diffusion part 8 Air outlet 11 Indoor facility 12 Air conditioning system 13 Supply port 14 Step floor 15 Seat 21 Intake port 22 Projection plate 41 Slit (hole)
62 Guide surface 73 Diffusion surface 143 Upright surface 611 Rotation shaft 731 Front edge

Claims (8)

Attached to a supply port for supplying fresh air provided on a rising surface facing forward of a step in front of one seat in a facility where multiple seats are provided on a stepped floor that becomes lower from the rear to the front,
an intake port for taking in the fresh air;
an air outlet that is provided above the intake port and blows out the fresh air supplied to the intake port;
a guide portion provided above the air outlet and provided with a guide surface along which the fresh air blown out from the air outlet rises;
a diffusion section that includes a diffusion surface that causes the air that has risen while being guided by the guide surface to collide and spread in the horizontal direction;
The guide surface is an arcuate surface facing forward, with a vertically intermediate portion projecting further forward than the upper and lower ends;
The diffusion surface is a surface located in front of the guide surface and at the height of the upper end of the guide surface, and intersects with the guide surface,
The guide section is switched between a first posture in which the guide surface is located at the rear and is separated from the diffusion surface, and a second posture in which the guide surface is located in the front and an upper end portion is continuous with the diffusion surface. Possible outlet member. 2. The air outlet member according to claim 1, wherein the front edge of the diffusion surface has an arcuate shape with an intermediate portion protruding more forward than a side end when viewed from the top and bottom. A pair of side plate portions are provided on both sides of the guide surface,
3. The guide surface is disposed between the rear sides of the pair of side plate parts when in the first position, and is arranged between the front edges of the pair of side plate parts when in the second position. The air outlet member described in . Any one of claims 1 to 3, wherein the guide part is provided at a lower part and rotates around a rotation axis extending horizontally along the upright surface to switch between the first attitude and the second attitude. The air outlet member described in . The air outlet member according to any one of claims 1 to 4, wherein the first attitude and the second attitude of the guide portion can be switched from above. The air outlet member according to any one of claims 1 to 5, further comprising a projecting plate located above the intake port and protruding forward from the intake port. The air outlet member according to any one of claims 1 to 6, wherein the lower end portion is provided with a lower plate portion in which a hole penetrating in the vertical direction is formed. A blower attached to a supply port for supplying fresh air provided on the forward facing upright surface of the step in front of one seat in a facility where multiple seats are provided on a step-like floor that decreases from the rear to the front. having an exit member;
The outlet member is
an intake port for taking in the fresh air;
an air outlet that is provided above the intake port and blows out the fresh air supplied to the intake port;
a guide portion provided above the air outlet and provided with a guide surface along which the fresh air blown out from the air outlet rises;
a diffusion section that includes a diffusion surface that causes the air that has risen while being guided by the guide surface to collide and spread in the horizontal direction;
The guide surface is an arcuate surface facing forward, with a vertically intermediate portion projecting further forward than the upper and lower ends;
The diffusion surface is located in front of the guide surface and at the height of the upper end of the guide surface, and is a surface that intersects with the guide surface,
The guide section is switched between a first attitude in which the guide surface is located at the rear and is separated from the rear of the diffusion surface, and a second attitude in which the guide surface is located in the front and an upper end portion is continuous with the diffusion surface. Air conditioning system possible.

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