JPH10300181A - Diffuser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diffuser which can send out air spreading over the whole of a living room. SOLUTION: This diffuser 10 supplies air at lower temperature than the room temperature to a diffuser 10 from under the floor F. Hereby, the air blown out of the slit made of adjacent vanes 32 is blown out in roughly parallel with the floor face in the radial direction (360 deg.) in the form of an air current close to a laminar flow, and floats all over the floor face F. Then, it is drawn to a rising air current generated with a heat generation source inside a living room, and shifts to the circulation area together with the heat, dust, etc., produced in the living room and is exhausted, being sucked in the suction port made at a ceiling panel. Hereby, dust, etc., do not diffuse, and the air quality of the living room goes up. Since the direction of blowout of the slit is inclined, it is not clogged with dust, etc., and it never swirls up dust, etc., accumulated on the floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air outlet used in an underfloor air conditioning system.

[0002]

2. Description of the Related Art An air-conditioning system in which an air outlet is attached to an opening formed in a floor surface and low-temperature air supplied through an air supply passage under the floor is blown out substantially in parallel with the floor surface and stays below a living room. Have been proposed by the present applicant.

[0003] The stagnated air moves to the ceiling surface together with the heat and dust generated in the living room by the rising air current generated by an internal heat source in the living room (for example, a human body or furniture such as OA equipment), and forms on the ceiling surface. The air is sucked into the suction port and exhausted through the exhaust passage. Thereby, the air quality of the living room is improved without agitation of dust and the like.

[0004] Since this air conditioning system is intended for cooling, if the outlet is capable of blowing low-temperature air substantially parallel to the floor, the air moves so as to crawl on the floor. There was no particular problem because it spread over the entire floor.

[0005] However, in the case of heating, the warm air blown out from the blow-out port rises on the spot after drifting to some extent substantially in parallel with the floor surface, so that the warm air is supplied to the opposite side to the blow-out direction. Not done. Because of this, the entire living room is not evenly heated,
In addition, the rising airflow due to the warm air is partially generated, so that the air quality of the entire living room cannot be improved.

Further, as shown in FIG.
There is also an outlet 84 for blowing wind at 0 °)
No. 136643), and this outlet 84 is
In FIG. 13, a swirling flow is generated and blows upward from a slit 88 formed on a concentric circle. As shown in FIG. 13, the swirling flow immediately rises as a characteristic of the swirling flow.

For this reason, if this type of air outlet 84 is used, in the case of heating, the air outlet 84 immediately starts up.
The spread of warm air becomes narrow.

[0008]

SUMMARY OF THE INVENTION In view of the above, the present invention provides an underfloor air-conditioning type air outlet capable of sending air to the entire living room during both cooling and heating. As an issue.

[0009]

According to the first aspect of the present invention, a tubular body of an air outlet is mounted on an opening formed in a floor surface. An annular blade plate is provided concentrically on the opening surface of the cylindrical body, and is inclined in the centrifugal direction. Therefore, the air supplied to the cylinder through the air supply passage is blown out in a radial direction (360 °) in a direction substantially parallel to the floor surface from a circular slit formed between the adjacent blades guided by the blades. .

When the air to be blown is lower than the temperature in the living room (during cooling), the air stays below the living room.
This air is attracted to the ascending air current generated by the heat source inside the living room, moves to the ceiling surface together with the heat and dust generated in the living room, is sucked into the suction port formed on the ceiling surface, and is exhausted through the exhaust passage. You.

By arranging the annular blades on the concentric circles in this manner, air having a laminar flow characteristic flows in all directions such that the air flows close to a laminar flow, and blows out with a predetermined thickness substantially parallel to the floor surface. . Also, since air is blown out in all directions,
Layout flexibility is increased.

On the other hand, when the blown air is higher than the temperature in the living room (during heating), the blown air is blown out in all directions in a direction substantially parallel to the floor, so that the air immediately rises and rises upward. And there is no blind spot in the blowing direction, so that the entire living room is uniformly heated. Further, by inclining the annular blades arranged on the concentric circles, it is possible to obtain the air volume while suppressing the blown air speed, so that there is no fear of causing turbulence. Note that the warm air becomes an updraft that rises from the entire floor surface and guides dust and the like generated in the living room to the suction port.

According to the second aspect of the present invention, the holding piece projects from the tip of the blade plate in a circumferential direction parallel to the floor surface. By holding down the air further with this holding piece,
In particular, in the case of heating, it is possible to suppress the force of the air to rise and to make the blown air have a horizontal spread.

According to the third aspect of the present invention, the blade located at the central portion of the tubular body falls down toward the floor from the blade located outside. That is, the angle of the air blown from the slit formed between the adjacent blades with respect to the floor surface is gentle at the central portion of the cylindrical body, and is steeper outside the central portion. For this reason, the air blown from the central portion of the cylindrical body suppresses the rising force of the air blown from outside the central portion. By adjusting the angle of the blades, the thickness (height from the floor) of the air to be blown can be set freely.

According to the fourth aspect of the present invention, there is provided a shutter that partially closes a concentric slit formed by adjacent blades. For this reason, when it is necessary to install an air outlet in the vicinity of a person for the sake of layout, the shutter can be adjusted to close the slit on the person side so that the draft is not felt. Also,
The outlet area of the outlet can be easily changed.

[0016]

FIG. 4 shows a living room 12 in which an air outlet 10 according to a first embodiment is installed. Double flooring 1
Reference numeral 4 denotes a floor slab 16 which is supported by a strut (not shown).
To form an air supply passage 18.

As shown in FIG. 1 and FIG.
Has a circular opening 20 communicating with the air supply passage 18. The cylindrical body 2 of the outlet 10 is
2 is mounted, and is flush with the opening 20 and the tile carpet 24 laid on the floor F. Further, the tip of the annular flange 26 projecting from the outer peripheral edge of the upper opening surface of the cylindrical body 22 is connected to the tile carpet 2 at the outer edge of the opening 20.
4, the outlet 10 is supported by the double flooring 14 via the flange 26. For this reason, the outlet 10 can be easily attached and detached.

A cross-shaped support frame 28 is stretched over the inner peripheral wall of the cylindrical body 22. On the upper part of the support frame 28, support pieces 30 are protruded at predetermined intervals. Further, the intersection of the support frame 28 (the cylindrical body 22)
(Central part of the center) is provided as a center point, and an annular blade plate 32 is disposed so as to draw a concentric circle.

The blade plate 32 is inclined in the centrifugal direction, with the lower end fixed to the upper part of the support frame 28 and the upper end fixed to the upper part of the support piece 30. As a result, a slit that blows out the air supplied to the cylindrical body 22 between the adjacent blade plates 32 substantially in parallel with the floor surface F is formed on a concentric circle centered on the intersection of the support frames 28. The blade plate 32 prevents the air from blowing upward, and controls the airflow so as to blow out the air near the laminar flow substantially parallel to the floor surface F. The blade 32 at the center has a conical shape, and the upper opening surface is covered with a disk 34.

At the tip end of the blade plate 32, there is formed a pressing piece 36 projecting in parallel with the floor F over the circumferential direction, and is supported by the upper end of the supporting piece 30. The pressing piece 36 further suppresses the force of the air to rise, and makes the blown air have a horizontal spread.

On the other hand, as shown in FIG. 4, a ceiling panel 48 having a suction port 46 is provided at the ceiling of the living room 12, and an exhaust passage 52 is formed between the ceiling panel 48 and the ceiling slab 50. . A ring air duct 54 is connected to the exhaust passage 52, and a part of the air is exhausted to the outside through an exhaust duct 56 by a return air fan (not shown).

A part of the air in the exhaust passage 52 is returned from the air duct 54 to the air conditioner 58 as return air.
The air is mixed with fresh air introduced from the outside air duct 60. Further, an air supply duct 62 is connected to an air outlet of the air conditioner 58 so as to supply air at a predetermined temperature and wind speed to the air supply passage 18.

Next, the function of the outlet 10 according to the first embodiment will be described. Here, the case where the inside of the living room 12 is cooled and the case where the inside of the living room 12 is heated will be described separately.

In the case of cooling, as shown in FIGS. 4 and 5,
Air having a temperature lower than room temperature is supplied from the air conditioner 58 to the air supply passage 18 through the air supply duct 62. Thereby, the cylindrical body 22
, The air blown out from the slits formed by the adjacent blades 32 has an airflow property close to a laminar flow, and is blown out in a radial direction (360 °) in a direction substantially parallel to the floor surface.
Floating all over the place. Then, it is attracted by the ascending air current generated by the internal heat source in the living room, moves to the circulation area M together with the heat and dust generated in the living room, is sucked into the suction port 46 formed in the ceiling panel 48, and passes through the exhaust passage 52. Exhausted.
Thereby, the air quality of the living room 12 is improved without diffusion of dust and the like.

Further, since the blowing direction of the slit is inclined, there is no clogging due to dust or the like, and no dust accumulated on the floor F is rolled up. Further, since the outlet 10 has a structure that can be easily removed, it is possible to easily cope with a change in the layout of a desk or the like.

On the other hand, in the case of heating, when air having a temperature higher than room temperature is supplied to the cylindrical body 22, as shown in FIGS. 6 and 7, the air is radiated from the concentrically arranged slits (36).
0 °) and is blown out substantially parallel to the floor F with a certain spread, so that it does not rise immediately and become an upward flow, and there is no blind spot in the blowout direction (see FIG. 3). 12 is uniformly heated. Further, by providing the annular vane plate 32 on the concentric circle, it is possible to obtain the air volume while suppressing the blown air velocity, so that there is no fear of causing turbulence. Note that the warm air becomes an ascending air current that rises from the entire floor surface F, and guides dust and the like generated in the living room 12 to the suction port 46.

Further, the air is further suppressed by the holding pieces 36 (see FIG. 2), so that the force for the air to rise can be suppressed and the blown air can be spread in the horizontal direction.

The air-conditioning system is not limited to the one described in the present embodiment. If the air-supply passage 18 can supply cool air or warm air and the air can be exhausted from the exhaust passage 52, the air-conditioning system may be pressurized. An air flow may be generated by a pressure difference using a chamber.

Next, the outlet 38 according to the second embodiment will be described. As shown in FIG. 8, in the second embodiment, the inclination angle of the blade of the outlet 38 is not constant. That is, the inclination angle of the blade plate 40 located at the center portion side of the cylindrical body 22 falls to the floor surface F side from the inclination angle of the blade plate 42 located outside the central portion (on the inner peripheral wall side of the cylindrical body 22). I have.

In other words, the angle of the air blown from the center of the cylindrical body 22 with respect to the floor surface F is smaller than the angle of the air blown from the outside of the center.
Therefore, the air blown out from the central portion of the cylindrical body 22
Suppress the rising power of the air blown from the outside from the center,
It is possible to have a predetermined thickness (height from the floor surface) and drift in the horizontal direction without causing disturbance.

By adopting such a configuration, the amount of blown air can be increased without increasing the speed of blown air.

It should be noted that even if the slats are gradually raised with respect to the floor surface F from the center of the cylindrical body 22 to the outside, it is possible to make the blown air have a thickness in substantially the same manner as in the second embodiment. it can.

Next, the outlet 44 according to the third embodiment will be described. In the third embodiment, as shown in FIGS. 9 to 11, shutters 64, 66, 6 that can change the opening area (blowing area) of the slit formed by the blade plate 45 and adjust the air volume.
8, 70 are provided.

The shutters 64, 66, 68, and 70 have a fan shape obtained by dividing the disk into four equal parts, and are provided with cylindrical shaft portions 64A, 66A, 68A, and 70A at the corners.
The shaft portions 64A, 66A, 68A, 70A are inserted into an operation rod 92 which is supported by a bearing portion 90 attached to the intersection of the support frame 28.

A cross-shaped frame 94 is hung over the inner peripheral wall of the cylindrical body 22, and a cross-section of the frame 94 is provided with a bearing 96 for supporting the lower end of the operating rod 92.
Are formed.

Furthermore, the shaft 6 of the uppermost shutter 64
4A is welded to the operation rod 92 so as to rotate integrally with the operation rod 92, and the outer peripheral portion of the lowermost shutter 70 is fixed to the inner peripheral wall of the cylindrical body 22 so as not to rotate. It has become.

On the other hand, the shutter 64 arranged at the top
A drive pin 71 projecting downward is provided on an outer peripheral portion of the drive pin 71. A long groove 72 in which the drive pin 71 slides is formed in the circumferential direction on the upper surface of the second shutter 66, and an interlocking pin 74 protrudes from the lower surface.

Further, on the upper surface of the third shutter 68, a long groove 76 in which the interlocking pin 74 slides is formed in the circumferential direction, and a stop pin 78 projects from the lower surface. On the upper surface of the lowermost shutter 70, a long groove 80 in which the stop pin 78 slides is formed in the circumferential direction.

In such a configuration, the operating rod 92
When a coin or the like is inserted into the minus groove 82 formed on the upper end surface of the cylinder 22 and the operation rod 92 is turned, first, the uppermost shutter 64 is rotated, and 1/1 of the opening surface of the cylindrical body 22 is rotated.
2 can be shielded. Further, when the operation rod 92 is turned, the drive pin 71 is moved to the second shutter 66.
, The second shutter 66 is turned, so that 3/4 of the opening surface of the cylindrical body 22 can be shielded.

Further, when the operating rod 92 is further turned, the interlocking pin 74 is moved to the third groove 68 of the third shutter 68.
6, the third shutter 68
Is turned, and the entire opening surface of the cylindrical body 22 can be shielded. In addition, so that the shutter does not rotate as it is,
When the stop pin 78 reaches the end of the long groove 80, the shutter 64 stops. To open the slit, the operation rod 92 may be turned in the opposite direction.

Thus, in the case where the air outlet 44 is installed in the vicinity of a person due to layout reasons, the shutter can be adjusted to close the slit on the person side so that the draft is not felt. Further, the outlet area of the outlet 44 can be easily changed.

When not used, the outlet is removed from the opening 20 and the opening 20 may be covered with a circular lid. Further, the mounting pitch of the outlets is determined by the relationship with the amount of blown air, but the pitch may be changed between during heating and during cooling.

[0043]

According to the present invention having the above-described structure, air can be supplied to the entire living room during both cooling and heating.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of an air outlet according to a first embodiment.

FIG. 2 is a cross-sectional view showing a state in which the outlet according to the first embodiment is attached to a double flooring material.

FIG. 3 is a plan view showing the flow of air in a living room provided with an outlet according to the first embodiment.

FIG. 4 is a schematic diagram showing the flow of air during cooling of a living room provided with an air outlet according to the first embodiment.

FIG. 5 is a perspective view showing the flow of air at the time of cooling of the air outlet according to the first embodiment.

FIG. 6 is a schematic diagram showing a flow of air when heating a living room provided with an air outlet according to the first embodiment.

FIG. 7 is a perspective view showing the flow of air when the outlet is heated according to the first embodiment.

FIG. 8 is a cross-sectional view showing a state in which the outlet according to the second embodiment is attached to a double flooring material.

FIG. 9 is a sectional perspective view of an air outlet according to a third embodiment.

FIG. 10 is a sectional view of an outlet according to a third embodiment.

FIG. 11 is an exploded perspective view of a main part of an air outlet according to a third embodiment.

FIG. 12 is a cross-sectional view showing an air outlet of a conventional underfloor air conditioning system.

FIG. 13 is a schematic diagram showing the flow of air in a conventional underfloor air conditioning system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 22 Cylindrical body 32 Blade plate 36 Holding piece 40 Blade plate 42 Blade plate 64 Shutter 66 Shutter 68 Shutter 70 Shutter

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Noriyuki Takahashi 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside the Technical Research Institute, Takenaka Corporation (72) Inventor Hisashi Hanzawa 1-5-1, Otsuka, Inzai City, Chiba Prefecture (72) Inventor Ikumasa Misaka 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Head Office

Claims (4)

[Claims] 1. An apparatus according to claim 1, which is attached to an opening formed in a floor surface,
It is used for an underfloor air-conditioning system in which air supplied through an air supply passage under the floor is blown into a living room, air in the living room is sucked in from a suction port formed in a ceiling surface, and exhausted through an exhaust passage. A cylindrical body to be mounted, and an annular blade plate provided concentrically on the opening surface of the cylindrical body and inclined in the centrifugal direction,
An outlet having: 2. The blow-out port according to claim 1, wherein a suppressing piece projecting in a circumferential direction parallel to the floor surface is formed at a tip end portion of the blade plate. 3. The blade according to claim 1, wherein the blade located at a central portion of the cylindrical body is tilted toward the floor from a blade located outside the central portion.
The outlet described in. 4. The air outlet according to claim 1, further comprising a shutter that partially closes a concentric slit formed between the adjacent blades.