JP2021179262A - Air supply control device and air conditioning system - Google Patents

Abstract

To provide an air supply control device which can make at least air supply control measures more economically and easily than conventional air control devices, and to provide an air conditioning system including the air supply control device.SOLUTION: An air supply control device 10 is provided connected to the other end of an air supply duct 5, connected at one end to an air conditioner, to supply conditioned air SA to an air conditioning chamber 2 communicating with an air conditioning space R through an air outlet. The air supply control device 10 is formed including: a connection pipe part 15 with which the other end of the air supply duct 5 is connected; a support plate part 16 extending from an outer peripheral surface 15a of the connection pipe part 15 in a direction orthogonal to an axis O1 of the connection pipe part 15; and a frame part 18 having a plate-like air supply receiving part 20 which is disposed with its one surface facing the support plate part 16 and the connection pipe part 15, and support pillar parts 21 which connect the air supply receiving part 30 with the support plate part 16, the frame part 18 including openings 17 for sending the conditioned air SA formed at spaces between the adjacent support pillar parts 21.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to an air supply control device and an air conditioning system.

Conventionally, in air-conditioning systems such as apartment houses, office buildings, various factories, and detached houses, the air-conditioning target spaces such as living rooms, work rooms, and corridors are double-floored, and air-conditioners, air supply ducts, and double-floor spaces are used. , There is a floor-blowing air-conditioning system configured to supply temperature-controlled and humidity-controlled air (air-conditioning SA) to one or more air-conditioned spaces through a floor outlet provided on a double floor (for example, patent). See Document 1).

In addition, in an air-conditioning system configured to supply air-conditioned air from an air-conditioner installed in an air-conditioned room to a single or multiple air-conditioned spaces such as a living room or a corridor through an air supply duct and an air outlet, the air conditioner and the air supply duct. In some cases, an air-conditioning chamber box is formed in the middle of the air-conditioning chamber box, and a part of the surface members of the air-conditioning chamber box is integrated into the unit building to reduce the amount of work at the site (see, for example, Patent Document 2).

In addition, an air conditioning chamber box is provided on the outlet side (air conditioner outlet side) of the air conditioner, and the circular pipe provided on one side of the air conditioning chamber box and the air supply flexible heat insulating duct for sending the air conditioning air to the room are high. There is a connecting member composed of three parts so that it can be connected with high quality and one touch (see, for example, Patent Document 3).

Here, in the floor-blowing air-conditioning system of Patent Document 1, the specific structure for connecting the air supply from the air conditioner to the double floor is not specified.

In the air conditioning system of Patent Document 2, as a method of connecting the air supply duct from the air conditioner to the air conditioning chamber box, a circular tube called a fixing collar or a color nipple and an annular plate-shaped fixing portion integrally formed at one end of the circular tube. A connecting member made of (flange portion) is used. Then, an opening hole is formed in the flat plate portion on one surface of the air conditioning chamber box, the fixing portion is attached to the flat plate portion so that the opening hole and the inside of the circular pipe communicate with each other, and the air supply duct is fitted and fixed to the circular pipe. By method, the air supply duct is connected to the air conditioning chamber box to configure the air conditioning system.

In Patent Document 3, as a method of fitting and fixing an air supply flexible heat insulating duct to a circular pipe portion provided at one end of an air conditioning chamber box on the air conditioner outlet side, even in a narrow place where connection work is difficult. It eliminates the need for screw fixing work, which is difficult and uncertain, and provides a one-touch connection method that allows reattachment and detachment without leakage by one-person work.

Japanese Patent No. 6381022 Japanese Patent No. 6468878 Japanese Patent No. 5643641

Here, for example, in a floor-blowing air-conditioning system that uses the double-floor space of a building as an air-conditioning chamber box, for a connection member for connecting and fixing an air supply duct from an air conditioner to a double-floor that is a flat plate portion. 1) Easily attach the air supply duct to the connecting member without air leakage, 2) Attach the connecting member to the double floor without air leakage, and 3) Cool the air from the air supply duct to the floor slab and inside the air supply duct. , No dew condensation occurs (retains) on the upper surface of the plate material of the connecting member, 4) The wind direction in the double floor can be controlled, 5) The inside of the double floor can be inspected, and so on. Desired.

However, when the above-mentioned conventional connection member is used in a floor-blowing air-conditioning system, in particular, in order to control the wind direction in the above-mentioned 4) double-floor, a straightening vane is separately installed in the double-floor. It is necessary to install it, which requires a great deal of labor and cost.

If the wind direction cannot be controlled appropriately, the cooling air supplied from the air supply duct in 3) above may induce dew condensation on the surface of a member such as a floor slab that forms a double floor space. be.

Therefore, in an air-conditioning system that supplies air from a double-floor space to an air-conditioned space through a floor outlet, it has been strongly desired to develop a method that can take air-conditioning control measures more easily and economically than before.

In view of the above circumstances, it is an object of the present disclosure to provide an air supply control device capable of realizing air supply control measures more easily and economically than before, and an air conditioning system provided with the air supply control device.

(1) One aspect of the air supply control device of the present disclosure is provided by connecting one end to the other end of an air supply duct connected to an air conditioner, and air conditioning is performed in an air conditioning chamber that communicates with an air conditioning target space via an air outlet. An air supply control device for supplying air, which extends from the outer peripheral surface of the connecting pipe portion to which the other end of the air supply duct is connected and the outer peripheral surface of the connecting pipe portion in a direction orthogonal to the axis of the connecting pipe portion. The provided support plate portion, a flat plate-shaped air supply receiving portion arranged so as to face the support plate portion and the connection pipe portion on one surface, and the air supply receiving portion and the support plate portion are connected to each other. It is provided with a frame portion having a plurality of support pillar portions and having a plurality of openings for sending the conditioned air between the adjacent support pillar portions.

In the air supply control device of (1) above, the conditioned air (supply air SA) blown out from the air supply duct hits the air supply receiving portion of the air supply control device and changes the flow direction in the lateral direction (axis orthogonal direction). In the air-conditioning chamber, air-conditioned air can be sent from a plurality of openings formed by a plurality of support columns of the frame portion in a direction in which each opening faces.
In addition, since the conditioned air is sent in the direction in which the plurality of openings face, the conditioned air can be adjusted by arbitrarily setting / adjusting the number and position of the support pillars and the number, position, direction, etc. of the plurality of openings. It becomes possible to control the direction and flow rate of air supply.

Furthermore, the conditioned air (supply air SA) blown out from the air supply duct hits the air supply receiving part of the air supply control device, so that the air supply duct can be connected to the connection member such as the conventional fixing collar, or the air supply duct can be connected. Compared to the case where the air-conditioned air is blown directly into the air-conditioned chamber such as a double-floor space and the air-conditioned air directly hits the inner surface of the member forming the air-conditioned chamber, dew condensation occurs on the inner surface of this member. Can be suppressed.

Therefore, according to the air supply control device of the above (1), it becomes possible to realize the air supply control measures (and the dew condensation measures) more easily and economically than before.

(2) Another aspect of the air supply control device of the present disclosure is the air supply control device of the above (1), wherein the air supply control device includes the flat plate-shaped support plate portion and the flat plate-shaped air supply. The receiving portion is formed in a square shape, and is further provided with an airtight material fixed to the four circumferences of the surface of the support plate portion facing the air supply receiving portion.

In the air supply control device of (2) above, for example, when applied to a floor-blowing air-conditioning system, when a connection member such as a conventional fixing collar is used, a circular hole is formed through the double floor. However, in this air supply control device, since the air supply receiving part of the frame part is formed in the shape of a square flat plate, it is formed through the floor and an insertion hole for inserting the frame part is formed in a square shape. Will be done. Then, the support plate portion larger than the plane dimension of the frame portion closes the gap between the frame portion and the rectangular insertion hole.
As a result, since the insertion hole can be formed in a square shape, the insertion hole can be formed more easily than the conventional circular hole, and the workability can be further improved.

Further, since the airtight material is fixed around the four circumferences of the surface of the support plate portion facing the air supply receiving portion, for example, when applied to a floor blowing type air conditioning system, the support plate portion larger than the plane dimension of the frame portion. Can close the gap between the frame part and the rectangular insertion hole, and an airtight material can be interposed between the support plate part and the floor, and it is supported by the floor surface of the double floor that forms the double floor space. It is possible to easily and effectively suppress the generation of air leakage between the support plate portion and the floor simply by fixing the plate portion with screws or the like.

(3) Another aspect of the air supply control device of the present disclosure is the air supply control device of the above (1) or (2), wherein the air supply control device has an arbitrary opening of the frame portion. A closing plate for closing is provided.

In the air supply control device of (3) above, it is possible to close an arbitrary opening and send conditioned air only from the remaining opening. As a result, the air-conditioning air supply direction and flow rate to be supplied from the air-conditioning control device can be adjusted according to the air supply control device and the installation position of the air outlet, which are appropriately arranged in consideration of the floor plan and orientation of the building. It is easy and can be set freely.

(4) Another aspect of the air supply control device of the present disclosure is the air supply control device according to any one of (1) to (3) above, wherein the air supply control device is the air supply receiving unit. The connection is provided with a first heat insulating material provided on one surface facing the support plate portion and a second heat insulating material provided so as to cover the entire surface of the support plate portion around the connection pipe of the support plate portion. The pipe portion includes a rib that protrudes from the outer peripheral surface and extends in the circumferential direction and is connected in an annular shape.

In the air supply control device of (4) above, the conditioned air blown out from the air supply duct hits the first heat insulating material provided on one surface of the air supply receiving portion to change its direction, and the air is supplied to the air conditioning chamber from the opening. NS. As a result, the first heat insulating material can further suppress the occurrence of dew condensation on the inner surface of the member forming the air conditioning chamber and the air supply control device itself.

Further, by covering the support plate portion with the second heat insulating material, for example, when applied to a floor blowing type air conditioning system, dew condensation is formed on the upper surface (other surface) of the support plate portion installed on the floor surface. Can be effectively suppressed from occurring.

Further, since the connecting pipe portion is provided with a rib, the connecting pipe portion is inserted inside the other end side of the air supply duct (for example, the other end side of the heat insulating flexible duct constituting the air supply duct), and the rib is inserted. By surrounding the air supply duct from the outside and tightening it with a fastening band at a position lower than the support plate portion, the other end side of the air supply duct and the connecting pipe portion can be firmly connected. Further, by tightening the fastening band at a position below the rib, it is possible to prevent the fastening band from shifting above the rib and the other end side of the air supply duct from coming off the connecting pipe portion. Further, by tightening the fastening band, the inner surface of the air supply duct and the outer peripheral surface of the connecting pipe portion are brought into close contact with each other, and air leakage does not occur in this portion. That is, it is possible to easily and effectively take measures against air leakage in this portion.

(5) Another aspect of the air supply control device of the present disclosure is the air supply control device according to any one of (1) to (4) above, wherein the air supply duct is at least the air supply control device. The portion including the other end connected to the connecting pipe portion is provided with a heat-retaining flexible duct having heat insulating properties and flexibility and having an inner surface formed of a water-resistant film.

In the air supply control device of (5) above, the heat retention flexible duct is a component of the air supply control device, and the other end side of the air supply duct connected to the connection pipe portion is the heat retention flexible duct. The air supply control device such as the heat insulation flexible duct can be easily removed when performing maintenance (inspection, replacement, etc.).
In addition, even when installing and constructing an air supply control device (an air conditioning system equipped with it), the other end of the air supply duct is a heat-retaining flexible duct, which makes it easy to handle, even when working alone in a narrow space. It is possible to easily install the air supply control device on the double floor and connect the air supply control device and the heat insulating flexible duct without using screws. Further, it becomes possible to easily reattach and detach the heat insulating flexible duct and reattaching and detaching the air supply connection unit after removing the heat insulating flexible duct. Therefore, it is possible to further improve maintainability and workability.

Further, since the inner surface of the heat insulating flexible duct is formed of a water resistant film, dew condensation occurs on the inner surface, and it is possible to effectively suppress the absorption of water by the heat insulating material constituting the heat insulating flexible duct. Further, even when dew condensation occurs, the dew condensation can be vaporized at an early stage. Therefore, it is possible to more effectively suppress the generation, proliferation, and odor of fungi, mold, and the like on the heat insulating material in the heat insulating flexible duct, and it is possible to realize more suitable air conditioning.

(6) One aspect of the conditioned air conditioning system of the present disclosure is an air conditioner, an air supply duct having one end connected to the air conditioner, and an air supply duct for supplying air-conditioned air treated by the air conditioner, and the air supply duct. The air supply control device according to any one of (1) to (5) is connected to the other end and is provided with an air conditioning chamber that communicates with the air conditioning target space via an air outlet. The frame portion was inserted into an insertion hole formed through one surface of the air conditioning chamber, and the support plate portion was fixedly provided on one surface of the air conditioning chamber.

In the air conditioning system of the above (6), the air supply control device according to any one of the above (1) to (5) is provided, and the air supply control device is installed by inserting the frame portion into the insertion hole formed through the air conditioning chamber. By doing so, it becomes possible to obtain the effect of the air supply control device according to any one of the above (1) to (5).

(7) Another aspect of the air-conditioning system of the present disclosure is the air-conditioning system of the above-mentioned (6), which is a floor-blowing air-conditioning system. Consists of a double floor space formed by a double floor, the outlet is a floor outlet provided on the double floor, and the air supply duct extends downward from the side of the ceiling. The air supply control device includes the vertical duct and the heat-retaining flexible duct connected to the vertical duct, and the air supply control device inserts the frame portion into an insertion hole formed through the floor surface of the double floor. The support plate portion was fixedly provided on the floor surface.

The air-conditioning system according to (7) includes the air supply control device according to any one of (1) to (5) and a heat-retaining flexible duct which is a component of the air supply control device (and / or air supply duct). By doing so, it is possible to realize / provide a floor-blowing air-conditioning system with excellent air supply control performance, dew-proof (condensation prevention) performance, airtightness (air leakage prevention) performance, maintenance performance, and good installation workability. become.

(8) Another aspect of the air conditioning system of the present disclosure is the air conditioning system of (6) or (7) above, for connecting a ventilation device having a ventilation duct and the ventilation duct to the air supply duct. Further provided with a ventilation merging connection duct, the ventilation merging connection duct includes the connection duct main body portion and a ventilation connection duct portion having one end connected to the ventilation duct and the other end connected to the connection duct main body portion. , And were formed in a substantially Y-shaped tubular shape so that the axes of the connection duct main body and the ventilation connection duct intersect each other at a sharp angle.

In the air conditioning system of (7) above, the ventilation air supply SA itself, which is the outside air OA taken in by the ventilation device, and the outside air OA and the return air RA taken in by the ventilation device are exchanged with each other for heat and moisture. The ventilation air supply SA can be supplied to the air supply duct through the ventilation duct and the ventilation confluence connection duct.

Further, at this time, since the ventilation confluence connection duct is formed in a substantially Y-shaped tubular portion including the connection duct main body and the ventilation connection duct portion sharply connected to the connection duct main body, it is sent from the air conditioner. The inside of the ventilation connection duct can be made negative pressure by the fluid force of the conditioned air flowing through the connection duct body, and this negative pressure is used to connect the ventilation air supply SA from the ventilation connection duct to the connection duct body. It can be drawn in and merged with the conditioned air (supply air SA). As a result, the ventilation air supply SA is suitably combined with the air conditioning air (air supply SA) flowing through the connection duct main body without causing a backflow of the ventilation air supply SA sent to the connection duct main body to the air conditioner side. It becomes possible to supply air to the air-conditioned space.

Further, the ventilation merging connection duct is formed in a substantially Y-shaped tube with a connection duct main body and a ventilation connection duct part sharply connected to the connection duct main body, so that the air conditioner is stopped and the conditioned air is stopped. Even when the supply of air (supply air SA) is stopped, the ventilation air supply SA sent from the ventilation device to the connection duct main body through the ventilation connection duct part by 24-hour ventilation or the like keeps the connection duct main body part. It is possible to prevent backflow to the air conditioner side. That is, it becomes possible to perform suitable ventilation at all times.

According to the air supply control device of the present disclosure and the air conditioning system equipped with the air supply control device, air supply control measures and dew condensation measures (in some cases, airtightness (air leakage) measures, maintenance measures, etc.) can be performed more easily and economically than before. This makes it possible to realize a more suitable air conditioning system than before.

It is the schematic of the building cross section which shows an example of the air conditioning system (floor blowing type air conditioning system) of this disclosure. It is a figure which shows an example of the air supply duct and the air supply control device (connecting member) of the air conditioning system (floor blowing type air conditioning system) of this disclosure. It is a perspective view which shows an example of the air supply control device (connecting member) of this disclosure. It is a top view which shows an example of the air supply control device (connecting member) of this disclosure. It is a side view which shows an example of the air supply control device (connecting member) of this disclosure. It is a perspective view which shows an example of the state which controlled the wind direction (air supply direction) of air supply by providing the closing plate in the air supply control device (connecting member) of this disclosure. It is a top view which shows an example of the control pattern which controls the air supply direction of air supply by the closing plate of the air supply control device (connecting member) of this disclosure. It is a schematic diagram of the building cross section which shows the modification example of the air-conditioning system (floor blow-out type air-conditioning system) of this disclosure, and is the ventilation device which has a ventilation duct, and the ventilation confluence connection duct for connecting a ventilation duct to an air supply duct. It is a figure which shows an example of the air-conditioning system provided with. It is a figure which shows an example of the ventilation confluence connection duct which provided the connection duct main body part and the ventilation connection duct part, and was formed in a substantially Y-shaped tubular shape.

Hereinafter, with reference to FIGS. 1 to 9, the air supply control device according to the embodiment and the air conditioning system provided with the air supply control device will be described.
Here, the present disclosure is a floor-blowing air-conditioning system configured to supply air-conditioned air from a double-floor space to a plurality of air-conditioned spaces via a floor outlet provided on the double floor (all rooms /). It is related to the whole building air conditioning system). In addition, this disclosure is particularly good for air supply control measures, dew prevention (condensation prevention) measures, airtightness (air leakage prevention) measures, maintenance measures, by adopting an air supply control device and a heat insulating flexible duct. It relates to an air conditioning system that makes workability easier and more economical than before.

Specifically, the floor-blowing air-conditioning system (air-conditioning system) 1 of the present embodiment is formed by a double floor and is used as an air-conditioning air supply path, for example, as shown in FIGS. 1 and 2. Double floor space by circulating the floor space (air conditioning chamber) 2, the air conditioner 4 provided in the ceiling 3 such as the corridor R1, and the air conditioning air (air supply SA) whose temperature and humidity are controlled by the air conditioner 4. An air supply duct 5 such as a round duct for supplying air to 2 and an air outlet for supplying air-conditioned air SA to the air-conditioned space R such as living rooms R2, R3 and corridor R1 provided on the double floor 2a. (Floor air outlet) 6 and the like.
Further, an air passage 8 such as an undercut of a door or a louver for returning the floor blown air (supply air SA) to the air conditioner 4 by communicating a plurality of air conditioning spaces R is provided.

Further, in the floor blowing type air conditioning system 1 of the present embodiment, the lower end portion (the other end side) of the air supply duct 5 is inserted (connected) into the insertion hole (opening hole) 7 formed through the double floor 2a. The double floor space 2 is provided with an air supply control device (connecting member) 10 for supplying air-conditioned air SA.

The air supply duct 5 of the present embodiment has one end connected to the air conditioner 4 and one end connected to the air conditioner side connection duct 5a extending substantially horizontally in the ceiling space 3a and the air conditioner side connection duct 5a. For example, an elbow duct 5b that bends at a right angle and is provided with the other end side arranged downward, and a vertical duct 5c that connects one end to the elbow duct 5b and extends downward in the vertical direction, and is flexible in addition to heat insulation / heat retention performance. It is configured to include a heat-retaining flexible duct 11 having properties (including flexibility and elasticity).
Here, in the present embodiment, the heat-retaining flexible duct 11 will be described as a component of the air supply duct 5, but the heat-retaining flexible duct 11 may be a component of the air supply control device 10 described in detail later.

The air conditioner side connecting duct 5a, elbow duct 5b, and vertical duct 5c are round ducts made of metal, and are provided by covering the outer periphery thereof with a heat insulating / heat insulating material 12 provided with, for example, glass wool.

Further, in the air supply duct 5 of the present embodiment, the other end (lower end) of the vertical duct 5c is arranged above the floor surface (upper surface) 2c of the double floor, and is formed shorter than the conventional vertical duct. There is. The air supply control device 10 fixed to the double floor 2a and the vertical duct 5c supply one end (upper end) side to the other end (lower end) side of the vertical duct 5c and the other end (lower end) side. It is connected via a heat insulating flexible duct 11 connected to each of the air control devices 10. That is, the air supply duct 5 is formed by using the heat insulating flexible duct 11 at a portion including the other end (lower end) of the air supply duct 5 where dew condensation may occur.

The heat insulating flexible duct 11 is integrated with, for example, a spiral metal material and a heat insulating material (heat insulating material) containing glass wool provided with the spiral metal material as an bone member so as to cover the outer peripheral surface side. It is formed in a round tubular shape with a protective film provided by being attached to the inner peripheral surface side and a water resistant film 13 provided by being integrally attached so as to cover the inner peripheral surface side. The heat insulating flexible duct 11 has one end side and the other end side, respectively, for the vertical duct 5c and the connection pipe portion of the air supply control device 10 by using, for example, a method using a screw and a tape together, or using a fastening band (not shown). It is firmly fixed and connected.

Further, in the floor-blowing air-conditioning system 1 of the present embodiment, a duct space (not shown) that extends vertically at a predetermined position such as the corridor R1 and communicates with the ceiling space 3a and the double floor space 2 is provided. An air supply duct 5 (vertical duct 5c, heat insulating flexible duct 11, etc.) is arranged in this duct space so as to be passed in the vertical direction. As a result, the air supply duct 5 is not exposed on the indoor side of the corridor R1 or the like, and is configured so as not to deteriorate the appearance.

As shown in FIG. 1, in the floor-blowing air-conditioning system 1 of the present embodiment, air from the corridor R1 included in the air-conditioning target space R is sucked from the suction port 4a of the air conditioner 4, and the air conditioner 4 is used. The air-conditioned air SA whose temperature and humidity have been adjusted is supplied to the air-conditioned space R through the air supply duct 5, the air supply control device 10, the double floor space 2, and the air outlet 6.

On the other hand, as shown in FIGS. 2 to 5, the air supply control device 10 of the present embodiment has a round tubular connecting pipe portion 15 connecting the other end of the heat retaining flexible duct 11 with the axis O1 direction directed in the vertical direction. A support provided by connecting the lower end side of the connecting pipe portion 15 so that the through hole 16a and the inside (inner hole) of the connecting pipe portion 15 communicate with each other. A plate portion 16 and a frame portion 18 connected to the lower surface of the support plate portion 16 and provided below, and a plurality of openings 17 for supplying air supply SA are formed on a plurality of side surfaces thereof. ing.

The connecting pipe portion 15 of the present embodiment is formed with a rib 15b extending outward from the outer peripheral surface 15a and extending in the circumferential direction to connect in an annular shape in the intermediate portion in the vertical direction.

The connection pipe portion 15 is inserted inside the lower end (other end) side of the heat insulating flexible duct 11, and the heat insulating flexible duct 11 is surrounded from the outside at a position below the rib 15b and tightened with a fastening band. It is firmly connected to the lower end side of the heat insulating flexible duct 11.

As a result, the inner surface of the heat insulating flexible duct 11 and the outer peripheral surface 15a of the connecting pipe portion 15 are in close contact with each other, and air leakage does not occur in this portion. Further, by tightening the fastening band at a position below the rib 15b, it is possible to prevent the fastening band from shifting above the rib 15b and the lower end side of the heat insulating flexible duct 11 from coming off from the connecting pipe portion 15.

By using the fastening band, the fixing of the lower end of the air supply control device 10 and the heat insulating flexible duct 11 can be easily released, and the heat insulating flexible duct 11 that has been released from the fixing can be shrunk upward in the duct space. can. This makes it possible to inspect the inside of the double floor space 2 from the connecting pipe portion 15.
Further, the heat insulating flexible duct 11 shrinks the inside of the duct space upward so that the screw 27 described later for fixing the air supply control device 10 and the air supply control device can be easily removed even in a narrow duct space. Can be done. As a result, the inside of the double floor space 2 can be more preferably inspected, and the air supply control device 10 can be easily replaced.

Incidentally, usually, the wall surface of the duct space is often provided with an inspection port for enabling the above work. Therefore, of course, depending on the situation, a conventional fixing method using, for example, screwing and tape may be used instead of using the fastening band as a means for fixing the heat insulating flexible duct 11.

The support plate portion 16 is formed in a rectangular flat plate shape, and is provided so as to extend from the outer peripheral surface 15a of the connecting pipe portion 15 in the direction orthogonal to the axis O1 of the connecting pipe portion 15. Further, the support plate portion 16 is provided with screw holes 19 penetrating from the upper surface to the lower surface on each of the four corner portions.

The frame portion 18 has a predetermined flat area smaller than that of the support plate portion 16 and is formed in a square flat plate shape. The lower ends are connected to the four corners of the air supply receiving portion 20 and the air supply receiving portion 20 which are arranged facing each other at a predetermined interval below, and extend in the vertical direction, and the upper end is attached to the lower surface of the support plate portion 16. It is formed with a support column portion 21 such as four angle members arranged in connection with each other.

Further, the frame portion 18 of the present embodiment includes a side wall plate portion 22 having a lower end connected to the outer peripheral end of the air supply receiving portion 20 and extending and connecting along the outer peripheral end, and the air supply receiving portion 20 and the air supply receiving portion 20 are provided. The bottom portion is formed in a tray shape by the side wall plate portion 22 integrally formed at the outer peripheral ends of the four sides of the above. At the bottom of the frame portion 18 formed in the shape of a tray, a square flat plate-shaped first heat insulating material 23 is laid on the upper surface (one surface) of the air supply receiving portion 20 surrounded by the side wall plate portion 22.

As a result, the air supply control device 10 of the present embodiment passes through the vertical duct 5c of the air supply duct 5, the heat insulating flexible duct 11, and the connecting pipe portion 15 as shown in FIG. 1 (see FIGS. 2 to 5). The air supply SA is discharged / blown toward the first heat insulating material 23, and the air supply SA that hits the first heat insulating material 23 and is turned laterally passes laterally through the opening 17 between the adjacent support pillars 21. Be sent air.

Further, as shown in FIGS. 6 and 7, the frame portion 18 of the air supply control device 10 of the present embodiment is formed between the adjacent support pillar portions 21 and faces four horizontal front-back, left-right directions. Among the openings 17, there is also a form in which a closing plate 24 for closing an arbitrary opening 17 is provided.

The closing plate 24 is formed in a square flat plate shape according to the shape of the opening 17, for example, by screwing both side portions to the adjacent support pillar portions 21, and if necessary, the lower end portion thereof. It is attached so that the opening 17 of the side wall plate portion 22 can be closed by screwing it to the side wall plate portion 22 or the like.
The closing plate 24 can be detachably attached to the frame portion 18, and of course, the closing plate 24 may be detachably attached by means other than screwing. Further, the frame portion 18 may be manufactured in advance without providing an arbitrary opening 17 at the time of factory manufacturing, or the closing plate 24 may be fixed to the frame portion 18 (including non-detachable fixing) to form an arbitrary opening 17. The air supply control device 10 may be manufactured in a state where the air supply control device 10 is closed and carried to the site.

By closing the arbitrary opening 17 with the closing plate 24 in this way, the air supply SA that is discharged toward the first heat insulating material 23 through the connecting pipe portion 15 and reflected by the first heat insulating material 23 is closed. Through the opening 17 that is not blocked by the plate 24, it becomes possible to supply air only in the direction in which the opening 17 faces.

Further, in the air supply control device 10 of the present embodiment, as shown in FIGS. 2 and 4, an airtight material 25 such as an airtight sponge is attached to the lower surface of the support plate portion 16 so as to surround the central through hole 16a. It can be attached by attaching it. In the present embodiment, a square flat plate-shaped airtight material 25 having a through hole in the center is formed, and the airtight material 25 is formed on the entire lower surface of the support plate portion 16 so as to communicate the support plate portion 16 and the through holes with each other. It is provided in surface contact.

Further, in the air supply control device 10 of the present embodiment, as shown in FIGS. 3 and 4 (see FIGS. 2, 5, and 7), a square flat plate-shaped second heat insulating body having an insertion hole 26a in the center is provided. The material 26 is formed, the connecting pipe portion 15 is inserted into the insertion hole 26a, and the second heat insulating material 26 is provided in surface contact with the entire upper surface of the support plate portion 16. At this time, the second heat insulating material 26 is inserted rather than the outer diameter of the connecting pipe portion 15 so that the inner peripheral end portion of the insertion hole 26a of the second heat insulating material 26 is firmly in close contact with the outer peripheral surface 15a of the connecting pipe portion 15. It is preferable that the hole 26a is formed so that the diameter is slightly smaller.

When installing the air supply control device 10 configured as described above, a square insertion hole 7 for inserting the frame portion 18 is opened in the double floor 2a of FIG. 1 (see FIGS. 2 to 6). Form. That is, the insertion hole 7 having a dimension larger than the plane dimension of the air supply receiving portion 20 of the frame portion 18 and smaller than the plane dimension of the support plate portion 16 is formed.

An airtight material 25 is attached to the lower surface of the support plate portion 16, a second heat insulating material 26 is attached to the upper surface, and a first heat insulating material 23 is attached to the upper surface of the air supply receiving portion 20, respectively. The air supply control device 10 provided with the closing plate 24 is inserted into the insertion hole 7 formed in the double floor 2a by inserting the frame portion 18 into the support plate portion 16 and the upper surface (floor surface) 2c of the double floor 2a. Temporarily install the airtight material 25 so as to be sandwiched between the two.

The screw 27 is inserted into the screw hole 19 formed through the four corners of the support plate portion 16 and screwed into the double floor 2a to fix the air supply control device 10. Further, the lower end side of the heat insulating flexible duct 11 having the upper end side connected to the lower end side of the vertical duct 5c is inserted into the connection pipe portion 15 of the air supply control device 10 and a tightening band is attached to the connection pipe portion 15. Connecting.
The second heat insulating material 26 may be attached to the support plate portion 16 in advance, or may be attached at the stage of installing the air supply control device 10 in a state where the second heat insulating material 26 is removed or at the stage of attaching the heat insulating flexible duct 11. You may.

In the air conditioning system 1 of the present embodiment in which the air supply control device 10 is installed as described above, the air conditioning air SA whose humidity and temperature are controlled by the air conditioner 4 is the air conditioner side connection duct 5a and elbow duct 5b of the air supply duct 5. , It is blown downward from the connection pipe portion 15 of the air supply control device 10 through the vertical duct 5c and the heat retaining flexible duct 11. Then, the conditioned air SA blown out from the connecting pipe portion 15 hits the first heat insulating material 23 provided in the air supply receiving portion 20 of the frame portion 18, and laterally from the opening 17 not blocked by the closing plate 24 of the frame portion 18. Air is supplied in the direction.

Therefore, in the air supply control device 10 of the present embodiment and the air conditioning system 1 provided with the air supply control device 10, the conditioned air (air supply SA) blown out from the air supply duct 5 is the air supply receiving unit 20 of the air supply control device 10. Each opening from the plurality of openings 17 formed by the plurality of support column portions 21 of the frame portion 18 in the double floor space 2 by changing the direction of the flow in the lateral direction in the direction orthogonal to the axis O1 so as to hit the first heat insulating material 23. The conditioned air SA can be sent in the direction in which the portion 17 faces.

As a result, the air supply duct 5 is connected to a connection member such as a conventional fixing collar, or the conditioned air SA is blown directly into the double floor space 2 from the air supply duct 5 to form the double floor space 2. Compared with the case where the air-conditioned air SA directly hits the inner surface of the member (such as the upper surface of the floor slab 2b), dew condensation occurs on the inner surface of the member forming the double floor space 2, and further, dew is formed on the upper surface of the floor slab 2b. It is possible to prevent the dew condensation water from flowing to an inappropriate position along the line. Therefore, it is possible to control the direction and flow rate of air-conditioned air SA by arbitrarily setting / adjusting the number and position of the support pillars 21 and the number, position, direction and the like of the plurality of openings 17. ..

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, the closing plate 24 may be detachably attached to any opening 17 among the plurality of openings 17 of the air supply control device 10. The opening 17 can be closed, and the conditioned air SA can be sent only from the remaining opening 17.
As a result, the conditioned air SA is sent in the direction in which one or more openings 17 face, so that the conditioned air is supplied from the air supply control device 10 according to the installation position of the air supply control device 10 and the air outlet 6. The air supply direction and flow rate of the air SA can be easily and freely set, and the air-conditioned space R can be easily and evenly comforted. It should be noted that the air supply control device 10 in which the wind direction of the double floor space 2 is planned at the time of planning the air conditioning system 1 and the closing plate 24 is fixedly provided may be used, which can reduce the number of members and the work in the field. It can be realized economically.

Therefore, according to the air supply control device 10 and the air conditioning system 1 of the present embodiment, excellent air supply control measures, dew condensation measures, airtightness measures, maintenance measures, etc. can be taken more easily and economically than before. It becomes possible to realize more suitable air conditioning.

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, since the other end side of the air supply duct 5 connected to the connection pipe portion 15 of the air supply control device 10 is the heat retaining flexible duct 11, the air supply control is performed. The heat retaining flexible duct 11 and the air supply control device 10 can be easily removed when performing maintenance (inspection, replacement, etc.) of the device 10.
Further, even when the air supply control device 10 and the air conditioning system 1 are installed and installed, the other end side of the air supply duct 5 (or the component of the air supply control device 10 for connecting to the other end of the air supply duct 5) is The heat-retaining flexible duct 11 facilitates handling and absorbs the deviation of the plane position between the central axis of the air supply duct 5c and the central axis of the connecting pipe portion 15 of the air supply control device 10 due to a construction error. The air supply control device 10 and the air supply duct 5 can be easily attached and connected. Therefore, it is possible to further improve maintainability and workability.

Further, as shown in FIG. 1, for example, in an apartment house, a step is provided in the floor slab 2b in order to provide a drain pipe in the double floor space 2, and the height of the double floor space 2 is partially increased. Even if there is a step on the floor slab 2b in this way, the air-conditioning air SA will not be biased in the double floor space 2 due to this step, and the air-conditioning air SA will be supplied in the air supply direction. The flow rate can be easily and freely and appropriately controlled. Therefore, the air-conditioned space R can be easily and evenly comforted.

Further, for example, even when it is necessary to change the layout in the air-conditioned space R due to reform or the like, the closing plate 24 is attached to or detached from the frame portion 18 of the air supply control device 10 or in advance. By replacing the closing plate 24 with an air supply control device 10 having a different installation location, it is possible to easily control the air supply direction, the flow rate, and the like, and it becomes possible to flexibly respond. That is, even if the shape, position, number, etc. of the air-conditioned space R are changed, the air supply state can be easily changed and controlled, and suitable air-conditioning control can be performed. ..

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, the air conditioning air SA blown out from the air supply duct 5 hits the first heat insulating material 23 provided on the upper surface (one surface) of the air supply receiving unit 20. The direction is changed and air is supplied to the double floor space 2 from the opening 17. As a result, the first heat insulating material 23 makes it possible to further suppress the occurrence of dew condensation on the inner surface of the member forming the double floor space 2 and the air supply control device 10 itself. In particular, it is possible to prevent dew condensation from occurring on the floor slab 2b of the building, which is transferred to an undesired position and accumulated due to a slight height difference of the floor slab 2b of the building.

Further, in the air conditioning system 1 (and the air supply control device 10) of the present embodiment, when configured as a floor blowing type air conditioning system, an airtight material is provided between the lower surface of the support plate portion 16 and the floor surface of the floor 2a. Air leakage occurs between the support plate portion 16 and the floor 2a simply by fixing the support plate portion 16 to the floor surface of the double floor forming the double floor space 2 by interposing the support plate portion 16 with screws. Can be easily and effectively suppressed. Of course, this fixing method is not limited to screwing, and a Z metal fitting or the like is provided on one side of the square through hole 16a of the double floor 2a, and the support plate portion 16 is fitted therein, and the two screw holes 19 on the opposite sides are provided. There is no limitation on the method of airtightly fixing the double floor 2a and the air supply control device 10, such as a method of omitting the screw fixing work in a narrow space on the back side by fixing the screws with.

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, the support plate installed on the floor surface (2a) is provided by covering the upper surface of the support plate portion 16 with the second heat insulating material 26. In addition to the occurrence of dew condensation on the upper surface of the portion 16, the loss of heat energy of the conditioned air SA can be effectively suppressed.

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, the inner surface of the heat insulating flexible duct 11 installed on the other end side of the air supply duct 5 is formed of the water resistant film 13, so that the inner surface thereof is formed. Even if dew condensation occurs, it can be effectively suppressed from being absorbed by the heat insulating material which normally has water absorption of the heat insulating flexible duct 11. Further, even when dew condensation occurs, the dew condensation can be discharged to the air supply control device 10 side, and water is not absorbed by the heat insulating material. Therefore, it is possible to more effectively suppress the generation and proliferation of fungi, molds, and odors associated with them, particularly in the heat insulating material portion in the air supply duct 5, and it is possible to realize more suitable air conditioning. ..

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, when a connection member such as a conventional fixing collar is used, it is necessary to form a circular hole through the double floor 2a. In the air conditioning system 1, since the air supply receiving portion 20 of the frame portion 18 is formed in a rectangular flat plate shape, it is formed through the floor 2a and the insertion hole 7 for inserting the frame portion 18 is formed in a square shape. Become. As a result, the insertion hole 7 can be formed more easily than the conventional circular hole, and the workability can be further improved.

Further, in the air supply control device 10 and the air conditioning system 1 of the present embodiment, the rib 15b is provided in the connection pipe portion 15 of the air supply control device 10. Therefore, the connecting pipe portion 15 is inserted inside the other end side of the heat insulating flexible duct 11, and the heat insulating flexible duct 11 is surrounded from the outside at a position below the rib 15b on the support plate portion 16 side and tightened with a fastening band. As a result, the other end side of the heat insulating flexible duct 11 and the connecting pipe portion 15 can be firmly connected. Further, by tightening the fastening band at a position lower than the rib 15b, it is possible to prevent the fastening band from shifting above the rib 15b and the other end side of the heat insulating flexible duct 11 from coming off from the connecting pipe portion 15. Further, by tightening the fastening band, the inner surface of the heat insulating flexible duct 11 and the outer peripheral surface 15a of the connecting pipe portion 15 are in close contact with each other, and air leakage does not occur in this portion. That is, it is possible to easily and effectively take measures against air leakage in this portion.

Therefore, according to the air supply control device 10 and the air conditioning system 1 of the present embodiment, it is possible to take even more excellent air supply control measures, dew condensation measures, airtightness measures, maintenance measures, etc. more easily and economically than before. It is possible to realize more suitable air conditioning than before.

Although the embodiments of the air supply control device and the air conditioning system of the present disclosure have been described above, the air supply control device and the air conditioning system of the present disclosure are not limited to the modifications described in the above embodiments and embodiments. It can be changed as appropriate without departing from the purpose.

For example, in the present embodiment, the air conditioning system 1 of the present disclosure is configured to supply air conditioning air SA from the double floor space 2 to a plurality of air conditioning target spaces R via an air outlet 6 provided on the double floor 2a. Although the description has been made assuming that the air-conditioning system is a floor-blowing air-conditioning system (all rooms / building air-conditioning system), the air-conditioning system of the present disclosure is not necessarily limited to the floor-blowing air-conditioning system.

For example, the attic space 3a of the suspended ceiling is used as an air conditioning chamber, and an air supply duct 5 is extended from the air conditioner 4 provided in the machine room or the like to the attic space 3a. The air-conditioning air SA is supplied to the ceiling space 3a from the opening 17 of the air supply control device 10 and blown air provided in the ceiling portion 3. It may be configured to supply air to the air-conditioned space (living room or the like) R below from the exit 6 or the like.

For example, when controlling the air conditioning of a large living room or each space divided into many spaces, such as an office building, the temperature difference between the glass window side (outer wall glass side) and the inside of the room due to sunlight or the like There are many cases where it is difficult to perform comfortable air-conditioning control for the entire large space or a large number of spaces, such as when the space becomes large and it feels hot or cold depending on the location of the large space.

Even in such a case, in the air supply control device 10 and the air conditioning system 1 of the present disclosure, the position, number, and closing plate of the air supply control device 10 installed in the ceiling back chamber (or the double floor space 2) By attaching and detaching 24, the amount of air supply to the desired direction of the conditioned air SA and its air supply direction (wind direction, directivity) can be easily controlled, and the entire large space or many can be used depending on the place where it feels hot or cold. It is possible to perform comfortable air conditioning control for the space partitioned by.

When the ceiling space 3a is used as an air conditioning chamber and the air supply control device 10 is installed in the ceiling space 3a to form the air conditioning system 1, the second heat insulating material 26 and the airtight material 25 are used as necessary. Further, the air supply control device 10 may be supported by suspending the air supply control device 10 from the support plate portion 16, or the frame portion 18 may be connected to a ceiling base or the like to support the air supply control device 10. ..

Further, the air supply control device 10 and the air conditioning system 1 of the present disclosure can be used to secure a suitable space environment even for a clean room or the like. Further, the air supply control device 10 of the present disclosure may be used by being provided not only on the floor or ceiling but also on the wall or the like.

Further, the air conditioning system 1 of the present disclosure may be configured to include a ventilation device 31 that takes in outside air OA and return air RA to perform ventilation.

Specifically, for example, as shown in FIGS. 8 and 9, the air conditioning system 1 of the present disclosure is ventilated with a ventilation duct 30 (outside air duct 30a, exhaust duct 30b, return air duct 30c, ventilation air supply duct 30d). The device 31 and a ventilation confluence connection duct 32 for connecting the ventilation duct 30 to the air supply duct 5 may be further provided.
Reference numeral 35 in FIG. 8 is the main body of the ventilation device, and the ventilation air supply SA is controlled by using the taken-in outside air OA as it is, or by passing the heat and humidity of the return air RA. Generate and feed. Further, reference numeral 36 is an outside air intake, reference numeral 37 is an exhaust port, and reference numeral 38 is a return air intake.

Further, as shown in FIG. 9, the ventilation merging connection duct 32 has a connection duct main body 33 and a ventilation connection duct portion 34 having one end connected to the ventilation duct 30 and the other end connected to the connection duct main body 33. , And the axis lines O2 and O3 of the connection duct main body 33 and the ventilation connection duct 34 are formed in a substantially Y-shaped tubular shape so as to intersect each other at a sharp angle.

In the air conditioning system 1 configured in this way, as shown in FIGS. 8 and 9, the outside air OA itself taken in by the ventilation device 31 and the outside air OA and the return air RA taken in by the ventilation device 31 heat each other. The ventilation air supply SA created by exchanging moisture (temperature control, humidity control) can be supplied to the air supply duct 5 through the ventilation duct 30 (ventilation air supply duct 30d) and the ventilation confluence connection duct 32. ..

Further, at this time, since the ventilation merging connection duct 32 is formed in a substantially Y-shaped tubular shape including the connection duct main body 33 and the ventilation connection duct 34 sharply connected to the connection duct main body 33, the air conditioner. The inside of the ventilation connection duct portion 33 can be made a negative pressure by the fluid force of the conditioned air SA sent from 4 and flowing through the connection duct main body 33, and this negative pressure is used to make the ventilation connection duct portion 34 (and the ventilation connection duct portion 34). The ventilation air supply SA can be drawn into the connection duct main body 33 from the ventilation duct 30 and the ventilation device main body 35) and merged with the conditioned air (air supply SA). As a result, the ventilation air is suitably ventilated and supplied to the conditioned air (air supply SA) flowing through the connection duct main body 33 without causing a backflow of the ventilation air supply SA sent to the connection duct main body 33 to the air conditioner 4 side. It becomes possible to merge the SAs and supply air to the air-conditioned space R.

Further, since the ventilation confluence connection duct 32 includes the connection duct main body 33 and the ventilation connection duct 34 and is formed in a substantially Y-shaped tubular shape, the air conditioner 4 is stopped and the air conditioning air (air supply SA) is supplied. Even when the air supply is stopped, the ventilation air supply SA sent from the ventilation device main body 35 (ventilation device 31) to the connection duct main body 33 through the ventilation connection duct part 34 by 24-hour ventilation or the like is an air conditioner. It is possible to prevent backflow to the 4 side. That is, it becomes possible to perform suitable ventilation at all times.

Further, when the total heat exchange type ventilation device is used as the ventilation device main body 35 (ventilation device 31), the high humidity outside air OA during the cooling period is taken into the exhaust EA side of the total heat exchange type ventilation device in the air conditioning target space R. It is suitable because the dehumidification can be reduced by the air that has been cooled and dehumidified, and dew condensation can be suppressed in the air supply duct 5 and the air supply receiving portion 20. Further, it is suitable because it can contribute to the reduction of the air conditioning load due to ventilation.

In any of the above configurations, the number of air supply ducts 5 on the outlet side of the air conditioner 4 may be one, or may be a plurality of ducts depending on the situation such as the air conditioning target space R. ..

Further, the air supply duct 5 and the outside air intake duct may be provided with dampers, and the flow rates of the supply air SA and the outside air OA may be appropriately adjusted by controlling the dampers with a control device.

1 Air conditioning system 2 Double floor space (air conditioning chamber)
2a Double floor (floor surface)
2b Building floor slab 2c Floor (top of floor)
3 Ceiling 4 Air conditioner 5 Air supply duct 6 Floor outlet (outlet)
7 Insertion hole (opening hole)
10 Air supply control device (connecting member)
11 Heat-retaining flexible duct 13 Water-resistant film 15 Connection pipe part 15a Outer peripheral surface 15b Rib 16 Support plate part 16a Through hole 17 Opening 18 Frame part 19 Screw hole 20 Air supply receiving part 21 Support pillar part 22 Side wall plate part 23 First heat insulating material 24 Closing plate 25 Airtight material 26 Second heat insulating material 30 Ventilation duct 31 Ventilation device 32 Ventilation merging connection duct 33 Connection duct main body 34 Ventilation connection duct part 35 Ventilation device main body O1 Axis line O2 Axis line O3 Axis line R Air conditioning target space SA Air conditioning air ( air supply)

Claims (8)

An air supply control device that is provided by connecting one end to the other end of an air supply duct connected to an air conditioner and for supplying air-conditioned air to an air-conditioned chamber that communicates with the air-conditioned space via an air outlet.
A connection pipe portion to which the other end of the air supply duct is connected,
A support plate portion extending from the outer peripheral surface of the connecting pipe portion in a direction orthogonal to the axis of the connecting pipe portion, and a support plate portion.
It has a flat plate-shaped air supply receiving portion arranged so as to face the support plate portion and the connecting pipe portion so as to face each other, and a plurality of support pillar portions connecting the air supply receiving portion and the support plate portion. A frame portion having a plurality of openings for sending the conditioned air between the adjacent support pillar portions is provided.
Air supply control device. The air supply control device is
The flat plate-shaped support plate portion and the flat plate-shaped air supply receiving portion are formed in a rectangular shape.
Further provided with an airtight material fixed to the four circumferences of the surface of the support plate portion facing the air supply receiving portion.
The air supply control device according to claim 1. The air supply control device includes a closing plate for closing any opening of the frame portion.
The air supply control device according to claim 1 or 2. The air supply control device is
A first heat insulating material provided on one surface of the air supply receiving portion facing the support plate portion, and
A second heat insulating material provided so as to cover the entire surface of the support plate portion is provided around the connection pipe of the support plate portion.
The connecting pipe portion includes a rib that protrudes from the outer peripheral surface and extends in the circumferential direction and is connected in an annular shape.
The air supply control device according to any one of claims 1 to 3. The air supply duct includes a heat insulating flexible duct having heat insulating properties and flexibility and having an inner surface formed of a water resistant film, at least in a portion including the other end connected to the connecting pipe portion of the air supply control device. Was composed of
The air supply control device according to any one of claims 1 to 4. With an air conditioner
An air supply duct for connecting one end to the air conditioner and sending air-conditioned air processed by the air conditioner,
An air conditioning chamber provided by connecting the air supply control device according to any one of claims 1 to 5 to the other end of the air supply duct and communicating with the air conditioning target space via an air outlet is provided. ,
The air supply control device is provided by inserting the frame portion into an insertion hole formed through one surface of the air conditioning chamber and fixing the support plate portion to one surface of the air conditioning chamber.
Air conditioning system. It is said to be a floor-blowing air-conditioning system.
The air conditioner is provided on the ceiling.
The air conditioning chamber consists of a double floor space formed by a double floor.
The outlet is composed of a floor outlet provided on the double floor.
The air supply duct includes a vertical duct extending downward from the side of the ceiling portion and the heat insulating flexible duct connected to the vertical duct.
The air supply control device is provided by inserting the frame portion into an insertion hole formed through the floor surface of the double floor and fixing the support plate portion to the floor surface.
The air conditioning system according to claim 6. A ventilation device having a ventilation duct and a ventilation confluence connection duct for connecting the ventilation duct to the air supply duct are further provided.
The ventilation merging connection duct includes the connection duct main body portion and a ventilation connection duct portion having one end connected to the ventilation duct and the other end connected to the connection duct main body portion. And the ventilation connection duct portion formed in a substantially Y-shaped tubular shape so that the axes of each other intersect at a sharp angle.
The air conditioning system according to claim 6 or 7.

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