JPH0812015B2 - Air blower for underfloor piping type air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention blows the supplied conditioned air into a room of an underfloor piping type air conditioner which sends air for air conditioning into the room either inside the doubled floor structure or through piping inside the floor structure. The present invention relates to an air blowing device having an air blowing port.

[0002]

2. Description of the Related Art In recent years, computers have been introduced into office work processing in offices, and so-called OA has been progressing. Since OA equipment such as computers requires electric power for driving, wiring cords for connecting to a commercial power source are attached, and when the number of OA equipments increases with the progress of OA equipment, the wiring cords will be installed on the floor. Will be routed on the surface.

If the wiring cord of the office automation equipment crawls on the floor, it not only spoils the aesthetics of the office space but also hinders walking. Therefore, in a so-called office building recently constructed, the floor structure is doubled and the above wiring cords are housed in the internal space so that various OA devices are connected to a power source.

On the other hand, in order to make the office space comfortable or necessary for OA equipment, an air conditioner for supplying conditioned air such as clean air or cold / warm air is provided in the room. The duct for feeding the conditioned air from this air conditioner is conventionally arranged inside the ceiling or the wall surface, and the conditioned air is blown into the room from the ceiling.

By the way, when the floor structure is doubled as described above, the duct is arranged in the inner space of the floor, and the air outlet is arranged on the floor so that the conditioned air is blown from the floor. , So that room air is drawn in from the top of the wall.
If the underfloor piping type air conditioner as shown in 17 is used, the cost required for the equipment can be reduced and the air conditioning effect can be enhanced by promoting the circulation of the conditioned air in the room. That is,
As shown in FIG. 17, conditioned air is sent from an air conditioner (not shown) into the double floor structure, and an air blowing device 3 including a blowing panel 2 equipped with a fan 1 is provided on a part of the floor surface. However, the conditioned air inside the floor structure is fed to the room 4.

[0008] FIG. 15 and FIG. 16 is a diagram for explaining a conventional general structure of such an air blowing device 3, FIG. 15 above
Perspective view from the side, FIG. 16 is a sectional view taken along the line A-A in FIG. 15. This air blowing device 3 is
A motor base 3b is attached to an intermediate portion of a frame 3a formed in a substantially square frame shape.
Four axial fans 1 are arranged and fixed to the. An outlet grill 5 is attached to the upper surface of the frame 3a by hanging an appropriate number of strips from one side to the opposite side. The lower end of the frame 3a extends to a position where it covers the axial fan 1, and at its lower end a support plate 3c is stretched over the frame 3a, and the drive motor of the axial fan 1 is appropriately supported by the support plate 3c. is there. And the support plate 3
Appropriate through holes are formed in c, and the conditioned air is sucked through the through holes by the operation of the axial fan 1 and blown out into the room 4 from the blowout grill 5.

[0007]

However, in the above-mentioned conventional blow-out grill 5, the strips are arranged in parallel, so that the structure is such that the air is blown only in a substantially vertical direction. There is no problem in feeding the conditioned air to the room, but when trying to change the arrangement of the equipment or the like in the room 4, inconvenience may occur. Also, those who work in the room 4 prefer to be blown directly to their body,
Although not preferred, since the blowing direction cannot be changed in the conventional blowing grille 5, it cannot be adjusted to the operator's desire.

[0008] Therefore, the invention optionally can change the wind direction, the desired operator, or blowing the can line a Ukoto suitable for placement of the device, so that desired by the wind pressure can be changed Was supplied under the floor with
The conditioned air can be efficiently collected and delivered indoors.
An object of the present invention is to provide an air blowing device for an underfloor piping type air conditioner.

[0009]

As a technical means for achieving the above object, in an air blowing device according to the present invention, a fan is attached to a lower surface of a panel forming a part of a floor surface, An air blower for an underfloor piping type air conditioner, in which a through hole penetrating the panel is formed at an appropriate position of the panel, and the conditioned air supplied from the air conditioner under the floor and discharged from the fan is blown into the room through the through hole. In the through hole, a blow-out grill is housed so as to be rotatable with respect to the through-hole, and a grill plate having an appropriate wall thickness is provided in the blow-out grill substantially at an appropriate position around the peripheral edge of the blow-out grill. The concentric circles should be installed, and the adjacent grill plates should be on the back side of the outlet grill.
To the appropriate height, and connect the grill plate to the same direction with respect to the thickness direction of the blowing grill.
And the opening formed between the grill plates from the back side
It is characterized in that it spreads from the surface side to
In addition, it is also characterized in that an appropriate number of the above-mentioned blow grilles are arranged and the above-mentioned fan is located at the substantially central portion of these blow grills.

[0010]

The conditioned air supplied from the air conditioner is blown into the room from the fan through the blowout grill.
Since the blowing grill is provided with an appropriate number of grill plates inclined in the thickness direction, the conditioned air is guided by the grill plates and is blown obliquely from the blowing grill. In addition, the blowout grill has its adjacent grill plate
Connected by the partition plate provided from the back side of the outlet grill
The efficiency of the conditioned air discharged from the fan
Collect well. Furthermore, the openings formed between the grill plates
Is spread from the back side to the front side, the wind speed
It is reduced appropriately and the air distribution area is expanded appropriately
Good air conditioning.

Moreover, since the blowout grill is rotatably provided with respect to the through hole of the panel forming a part of the floor surface, it is possible to change the blowing air in any direction.

A plurality of the above-mentioned blowout grills are arranged,
If the blowing directions of all the blowing grills are directed to the center of these blowing grills, the conditioned air blown from the respective blowing grills interferes with each other to increase the wind pressure and blow the air in a substantially vertical direction. Furthermore, if all the blowout grills are oriented in the same direction, the air pressure can be increased in that direction to blow air.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air blow-out device for an underfloor piping type air conditioner according to the present invention will be specifically described below with reference to the illustrated embodiments.

FIG. 1 shows a blow-out grill 10 of an air blow-out device according to the present invention, which is constituted by a disc 11 having a proper thickness as a main body 11. Openings 12a to 12h having appropriate widths are concentrically formed around one point O on the peripheral edge of the surface of the main body 11 which is appropriately offset from the center. These openings 12a-1
Both ends of 2h are appropriately formed in an arc shape. Further, in the vicinity of the center O, there is formed a through hole 13 for passing the wiring cord that has passed under the floor so that the wiring cord can be pulled out onto the floor.

The openings 12a to 12h are, as shown in FIG.
It is partitioned by grill plates 14a to 14h having an appropriate wall thickness which is continuous with the main body 11. The grill plates 14a to 14h are formed so as to be appropriately inclined in the thickness direction of the main body 11 from the front surface to the back surface of the main body 11, and the grill plates 14a to 14h are also formed.
Are arranged substantially in parallel. Therefore, the opening 12
The a to 12h are formed as through holes that are inclined toward the back surface of the main body 11, and communicate with the openings 15a to 15h on the back surface side in a state where the front and back surfaces of the main body 11 are displaced. Moreover, the opening 12
The length of the arc of a to 12h and the openings 15a to 15h is the opening 12 on the front side.
The lengths a to 12h are longer than the openings 15a to 15h on the back surface side, and therefore, both ends of the openings 12a to 12h have a shape widened toward the front surface side of the main body 11.

On the back side of the main body 11, as shown in FIG. 3, the partition plates 16a-1 to 16h-1 are attached to adjacent grill plates 14a-14h.
6g is provided. This partition plate 16 is provided in the central portion between the grill plate 14a and the grill plate 14b, and in the grill plates 14b to 14h, two partition plates are provided for each adjacent grill plate 14.
16b to 16g are provided at positions symmetrical with respect to the extension line of the partition plate 16a provided between the grill plates 14a and 14b, and the intervals thereof are the concentric openings 15a. It is designed to gradually increase as the radius of ~ 15h increases. Furthermore, these partition plates 16 are the main components 11
It is provided at a height of approximately 1/2 of the wall thickness of the main body 11 from the back surface side. No partition plate is provided for the opening 15h.

As shown in FIGS. 1 and 2, on the surface of the main body 11, a circular arc-shaped locking groove 17 is formed at an appropriate depth outside the opening 12h. At the time of turning, an appropriate tool is inserted into the locking groove 17 to turn it. Further, on the back surface side of the main body 11 with respect to the through hole 13, a spot facing portion 13a is formed in an appropriate size in order to secure the degree of freedom of the wiring cord, and the edge portion of the spot facing portion 13a is appropriately formed. A locking pin 18 is projected at the position. Further, as shown in FIG. 3, a large number of protrusions 19 slightly protruding from the back surface are formed on the peripheral portion of the back surface of the main body 11 to form irregularities.

The blow-out grill 10 is rotatably accommodated in a grill holder 20, as shown in FIGS.
As shown in FIGS. 6 to 8, the grill holder 20 has a shape in which two tubular bodies having different diameters are joined in the center direction, and the upper tubular portion 21 has a larger diameter than the lower tubular portion 22. There is. The inner diameter of the upper tube portion 21 is slightly larger than the outer diameter of the blowout grill 10 so that the blowout grill 10 is housed in the upper tube portion 21. A step portion 23 is formed at the boundary between the upper tubular portion 21 and the lower tubular portion 22, and the surface of the step portion 23 is similar to the protrusion 19 formed on the peripheral portion of the back surface of the blowout grill 10. Unevenness is formed. Further, a flange portion 21a is formed on the outer peripheral surface of the upper end of the upper cylinder portion 21 so as to project outward.

A bolt housing 24 is formed at an opposite position of the lower cylinder portion 22 of the grill holder 20 so as to project inward, and a bolt chamber 24a in which a stopper bolt 25 is housed is provided outside the bolt housing 24. Are formed. As shown in FIGS. 6 and 7, the head portion of the stopper bolt 25 penetrates the upper end portion of the bolt housing 24 so that the head portion can be operated by a tightening tool such as a screwdriver inside the grill holder 20. I am doing it. The lower end of the stopper bolt 25 penetrates the lower end of the bolt housing 24,
A washer 26 is attached to the tip portion located outside the bolt housing 24.
Is loosely fitted, and the stopper bolt 25 is
It is rotatable with respect to.

Further, a hook housing 28 is formed on the side of the bolt housing 24, and a lower end portion of the hook housing 28 is provided outside the hook housing 28.
A hook chamber 28a is formed in communication with the hook chamber 28a. Then, as shown in FIG. 8, one arm of the substantially L-shaped hook 29 is located in the bolt chamber 24a, and the other arm is in the hook chamber 24a.
It is located at 25a. The stopper bolt 25 is screwed onto the tip of the one arm located in the bolt chamber 24a, and the peaks and valleys are alternately arranged on the tip edge of the other arm located in the hook chamber 25a. An occlusal part 29a is formed.
Further, when the hook 29 is housed in the hook chamber 28a, the outer peripheral surface of the hook 29 is the upper cylinder portion 21 of the grill holder 20.
Of the outer peripheral surface of the sheet.

As shown in FIG. 7, a stopper plate 24b is formed on the inner surface of one of the bolt housings 24, and when the outlet grill 10 is rotated with respect to the grill holder 20, the outlet grill 10 is rotated. The locking pin 18 comes into contact with the stopper plate 24b so that it cannot be further rotated in that direction.

As shown in FIG. 9, the panel 30 provided with the blow-out grill 10 has a centrifugal fan 31 fixed to a substantially central portion of a substantially square panel 30 at the apex of a square surrounding the fan 31. Four through holes are formed through the panel 30, and the blowing grille 10 is arranged in each of the through holes. As shown in FIG. 10, the blowout grill 10 is provided by being loosely fitted to the grill holder 20 attached to the panel 30. Also, as shown in FIG.
As shown in FIG. 3, a housing 32 that covers the fan 31 is fixed, and an opening 32a is formed in the center of the lower surface of the housing 32 so as to face the suction port of the fan 31, and the conditioned air in the floor structure is blown from the opening 32a. I'm supposed to be sucked into 31. A sound absorbing material 33 is attached to the inner surface of the housing 32 so that the sound emitted from the fan 31 or the motor driving the fan 31 does not reach the room 4.

The operation of the air blowing device of the underfloor piping type air conditioner constructed as described above will be described below.

In order to install this air blowing device on the floor surface, as shown in FIG. 4, the grill holder 20 is inserted into a through hole formed in a panel 30 which constitutes a part of the floor surface. . This through hole is formed with an inner diameter larger than the outer diameter of the upper cylinder portion 21 of the grill holder 20 and smaller than the outer diameter of the flange portion 21a. Therefore, when the grill holder 20 is inserted, the flange portion 21a is formed into the through hole. It is adapted to engage with the edge.
Then, the stopper bolt 25 is tightened. At the beginning of this tightening operation, the hook 29 screwed to the stopper bolt 25 is rotated by the rotation of the stopper bolt 25, and the hook chamber 28
As shown in FIGS. 4 and 6, the occlusal portion 29a accommodated in a is in a state of protruding to the side of the grill holder 20. In addition, tighten the stopper bolt 25 to
29 is lifted by the rotation of the stopper bolt 25, and as shown in FIG. 4, the panel 30 is clamped by the occlusal portion 29a and the flange portion 21a. 20 is fixed to the panel.

The blow-out grill 10 is placed inside the upper cylinder portion 21 of the grill holder 20 fixed to the panel 30.
Is inserted, the blow-out grill 10 is set on the panel 30. In this state, if conditioned air is supplied from the air conditioner (not shown) to the underfloor and the fan 31 is driven, the conditioned air is sucked by the fan 31 and blows out from the openings 15a to 15h to the openings 12a to 12h of the grill 10.
And is fed into the room in which the panel 30 is provided.
When the conditioned air passes through the blow-out grill 10, it is guided by the grill plates 14a to 14h, so that it is blown in an oblique direction from the center of the blow-out grill 10.
Moreover, since the partition plates 16 are provided on the grill plates 14a to 14h, the conditioned air is converged on the rear surface of the blowing grill 10 along the partition plates 16 and the openings 12a on the front surface side.
The air-conditioning air sent from the fan 31 to the outlet grill 10 can be sent to the room without waste.

Moreover, the blowout grill 10 has a grill holder 20.
Since it is rotatably held with respect to, the blowing direction of the conditioned air can be arbitrarily changed.

The blowout grills 10 are arranged one by one at the four corners of one square panel, for example, and the fan 31 is arranged at substantially the center of the square. The conditioned air supplied under the floor is sucked when the fan 31 is driven, and is discharged into the room through the blowout grills 10. Moreover, since the blowing grille 10 can change the blowing direction separately, it is possible to change the wind direction and the wind pressure as desired. That is, if the wind directions of the four blowout grills 10 are directed to the center of the panel, the conditioned air to be blown interferes at the center of the panel to increase the wind pressure. Further, by directing one of the blowout grills 10 in a desired direction and the other in a different direction, it is possible to receive air blowing with a small wind pressure.

FIGS. 11 to 13 are views in which four blowout grills 10 are arranged at the apexes of a square having a side of approximately 250 mm, and the directions of the blowout grills 10 are changed to measure the distribution of the wind speed. The wind directions of the four blowing grilles 10 are shown in (a) of the figure, and the wind speed distribution is shown in (b) of each figure. Further, FIG. 14 shows a wind speed distribution when only one blowout grill 10 is provided. The data was obtained when the temperature difference between the conditioned air and the room was -7 ° C and the air volume was 180 CMH.

FIG. 11 shows a state in which four blowout grills 10 are arranged so that the conditioned air is blown to substantially the center of the panel 30 as shown in FIG. Then, the wind speed distribution as shown in FIG. 7B is obtained, and as shown in the drawing, the wind direction is almost vertically upward from the central portion of the panel 30, and the air blown at the wind speed of 0.25 mm / sec is the floor. It is obtained at a height of almost 2050 mm from the surface.

FIG. 12 shows a panel with three outlet grills 10.
The case where the air is blown to the central portion of 30 and the other one is blown to the side of the panel 30 is shown. In this case, as shown in (b) of the figure, the air direction is sent to the upper side of the panel 30, and the air is blown to the side from the blow-out grill 10 that is directed to the side. The air velocity of 0.25 mm / sec can be obtained at a height of almost 1000 mm above the floor. Therefore, for example, a state suitable for blowing air to the vicinity of the neck of a worker who is sitting on a chair can be obtained.

FIG. 13 shows a case where four blowout grills 10 are blown to the side of the panel 30 in the same direction.
In this case, as shown in (b) of the figure, the air is blown to the side of the panel 30 and the air velocity of 0.25 mm / sec is almost 17 from the floor.
It can be obtained at a height of 00 mm, and will be blown to the vicinity of the head of a person performing standing work, for example.

Then, as shown in FIG. 14, in the case of one blowing grill 10, air is blown obliquely upward from the blowing grill 10. In addition, the air velocity of 0.25 mm / sec can be obtained at a height of almost 1200 mm from the floor.

From the wind speed distributions shown in FIG. 11 to FIG. 14 described above, the wind direction can be arbitrarily adjusted, and the air can be blown to a higher position by interfering the air blow with the four blowout grills 10 toward the center.

In this embodiment, the grill holder 20 for accommodating the blowout grill 10 has a structure having hooks 29 and the like, and the grill holder 20 can be fixed to the panel 30 from above. Not limited to the structure, as long as the blowout grill 10 is rotatably held, a cylindrical grill holder or a structure in which the blowout grill 10 is directly held in the through hole of the panel 30. I do not care.

Further, in this embodiment, four blowout grills 10 are provided.
Although the distribution of the wind speeds is shown in the case of arranging, the number of the blow-out grills 10 is not limited to four, and a plurality of them can be arranged. That is,
The number of blowout grills 10 may be set according to the arrangement of indoor devices and the like and the air conditioning specifications.

[0036]

As described above, according to the air blow-out device of the underfloor piping type air conditioner according to the present invention, the blow-out grill capable of blowing air obliquely is provided to the panel constituting a part of the floor surface. Since it is rotatably provided, the blowing direction can be arbitrarily changed. Therefore, efficient air conditioning can be performed even when the arrangement of devices in the room is changed. In addition, the outlet grill has
Suitable for almost concentric circles around the appropriate position on the periphery of the rill
An appropriate number of grill plates are provided and adjacent grill plates are
Place the objects together from the back side of the grill to an appropriate height.
Since it is connected by a partition plate, it is supplied below the grill plate.
This partition plate collects and shakes the sent conditioned air efficiently.
Divide. In addition, the opening formed between the grill plates
Since the front side is expanded more than the side, the wind speed is reduced appropriately.
However, the air distribution area can be expanded to improve the air conditioning efficiency in the room.

Further, by disposing a plurality of blowout grills, the wind pressure can be set arbitrarily, and by changing the blowing direction of these blowout grills, an arbitrary air distribution mode can be set. Moreover, the air distribution mode can be changed not only at the initial setting but also at any time.
Therefore, it is possible to constantly distribute the air according to the desire of the operator.

[Brief description of drawings]

FIG. 1 is a plan view of a blowing grill of an air blowing device according to the present invention.

FIG. 2 is a cross-sectional view of the blowout grill, taken along the line BB in FIG.
It is shown cut along the line.

FIG. 3 is a rear view of the blowout grill.

FIG. 4 is a cross-sectional view of a state in which a blowout grill is accommodated in a grill holder fixed to a panel.

FIG. 5 is a partially cutaway perspective view showing a state in which a blowout grill is accommodated in a grill holder fixed to a panel.

FIG. 6 is a sectional view of a grill holder.

FIG. 7 is a plan view of a grill holder.

FIG. 8 is a side view of the grill holder with a part cut away.

FIG. 9 is a plan view of an air blowing device according to the present invention.

FIG. 10 is a sectional view taken along line CC in FIG.

FIG. 11 is a wind velocity distribution chart obtained by setting four blowout grills in a state in which they are blown to a substantially central portion. FIG. 11A shows a plan view of the blowout grill setting state, and FIG. 11B shows a wind velocity distribution. Shows.

FIG. 12 is a wind velocity distribution map obtained by setting three of the four blowout grills in a state of blowing air substantially to the center and the other one in a state of blowing air laterally. The top view of the setting state of a grill is shown, and the wind speed distribution is shown to (b).

[Fig. 13] Fig. 13 is a wind velocity distribution diagram obtained by setting four blowout grills in a state in which air is blown sideways. Fig. 13A shows a plan view of the blowout grill setting state, and Fig. 13B shows wind velocity distributions. ing.

FIG. 14 is a wind speed distribution map of one outlet grill,
A plan view showing the blowing direction is shown in (a), and a wind velocity distribution is shown in (b).

FIG. 15 is a plan view of an air blowing device of a conventional underfloor piping type air conditioner.

16 is a cross-sectional view taken along the line AA in FIG.

FIG. 17 is a diagram illustrating a usage mode of an air blowing device of an underfloor piping type air conditioner.

[Explanation of symbols]

 10 Blow-out grill 11 Main body 12a to 12h Opening 14a to 14h Grill plate 15a to 15h Opening 16 Partition plate 20 Grill holder 21 Upper cylinder part 22 Lower cylinder part 23 Step part 29 Hook 30 Panel 31 Centrifugal fan 32 Housing 33 Sound absorbing material

Claims (2)

[Claims] 1. A fan fixed to a lower side surface of a panel forming a part of a floor surface, a through hole penetrating the panel being formed at an appropriate position of the panel, and being supplied from an air conditioner to the underfloor. An air blower for an underfloor piping type air conditioner that blows conditioned air discharged from the inside of a room through the through hole, wherein the through hole stores a blowout grill rotatably with respect to the through hole. In addition, a grill plate having an appropriate thickness is provided substantially concentrically around an appropriate position on the peripheral portion of the blowout grill , and adjacent grill plates are appropriately raised from the rear surface side of the blowout grill.
Tandem with partition plates up to, is inclined in the same direction with respect to the thickness direction of the grill blowing the grill plate Rutotomoni, open to be formed in the grill plates
An air blower for an underfloor piping type air conditioner, which has a mouth widened from the back side to the front side . 2. A fan is fixed to a lower side surface of a panel forming a part of a floor surface, a through hole penetrating the panel is formed at an appropriate portion of the panel, and the fan is supplied under the floor from an air conditioner. An air blower for an underfloor piping type air conditioner that blows conditioned air discharged from the inside of a room through the through hole, wherein the through hole stores a blowout grill rotatably with respect to the through hole. In addition, a grill plate having an appropriate thickness is provided substantially concentrically around an appropriate position on the peripheral portion of the blowout grill , and adjacent grill plates are appropriately raised from the rear surface side of the blowout grill.
Tandem with partition plates up to, is inclined in the same direction with respect to the thickness direction of the grill blowing the grill plate Rutotomoni, open to be formed in the grill plates
An air blower for an underfloor piping type air conditioner, characterized in that the mouth is widened from the back side to the front side , the appropriate number of the above-mentioned blow grilles are arranged, and the above-mentioned fan is located at substantially the center of these blow grills. .