JPH0731072Y2 - Floor outlet with air conditioning fan - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is mainly for an underfloor air-conditioning equipment, with an air-conditioning fan used when inhaling the conditioned air blown into the underfloor chamber of the free-access floor by the air conditioner and blowing it out into the room. It relates to the floor outlet.

[0002]

2. Description of the Related Art Normally, in this type of underfloor air conditioning, the air conditioner blows conditioned air to the underfloor chamber of the free access floor, and the conditioned air is attached to the floor panel of the free access floor. In order to improve, it is sucked in by the floor outlet with a fan and blown out from the floor in the room toward the ceiling, and the blown air is returned to the air conditioner from the inlet on the ceiling surface via the ceiling chamber, at this time, It is intended to raise the smoke of indoor cigarettes and the heat emitted from OA equipment, and to discharge it from the ceiling together with the return air. Therefore, the duct for sending conditioned air is not installed, and the static pressure becomes low in the place away from the air conditioner, and the air volume becomes insufficient.Therefore, it is necessary to pressurize with a fan and blow out all the outlets. In order to blow out more uniformly, it is necessary to use the fan entirely.

For that reason, what is currently used as a floor outlet with a fan is that one to four outlets are attached to one free access floor (600x600 mm) and the bottom surface of the free access floor is attached. Has a built-in face fan and control mechanism.

[0004]

[Problems to be Solved by the Invention] However, due to the diffusivity of air-conditioned air, not only is there mutual interference when the mounting pitch of the air outlets is more than 900 mm, but the directionality is also increased to prevent mutual interference. If the air is blown while being held, there is a problem that the rotating air flow is not generated and the mixing with the room air is not promoted. Also, the total weight is as heavy as several tens of kilograms, one person cannot move, and more than two people were required, so installation work was extremely difficult. In addition, switching the power supply of the fan requires a remote control device and the like, which has been a factor of cost increase.

Further, since the integrated face fan is used, the size of the outlet main body must be suppressed to about 150 mm in order to use it as a low floor type, and it is extremely possible to reduce the generated noise. Since it is difficult and the face fan is relatively close to the user's ear in the room, it has been conventionally difficult to use the integrated face fan. However, acoustically, it has been confirmed that sound is attenuated by changing its cross section and allowing it to pass (open end reflection loss). Moreover, this phenomenon has a large attenuation at low frequencies.

Therefore, the present invention was devised to solve the above-mentioned problems, and it is possible to install the air flow distribution so as not to interfere with the distribution of air flow, and to reduce the weight of the installation work. Is extremely easy, and yet
The power source of the fan is switched, and further, the upper inner peripheral surface of the outlet main body and the substantially central inner peripheral surface in the vertical direction are provided with sound absorbing materials for reducing the sound generated in the high frequency region of the fan, respectively.
Between these sound absorbing materials, a sound absorbing plate that reduces the sound generated in the low frequency region of the fan due to the reflection loss at the open end can be easily adjusted for rotation, and the cost can be reduced to achieve an economical effect. (EN) A floor outlet with an air-conditioning fan, which is extremely large and can significantly reduce the noise generated by the fan.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a plurality of air conditioners at the upper end of a short tubular outlet body having an air intake hole for air conditioning at the bottom. Air outlets are provided with air outlets at appropriate intervals, and a fan is fixed to the lower part inside the air outlet main body via a mount plate on the upper side. A controller for adjusting the rotation of the fan is attached, and an operating member is provided at the center of the blower plate, and a power source for the fan is installed so that the lower end of the blower plate penetrates the blower plate and is fitted to the switch piece on the controller upper surface. It is supported so as to be freely switchable and rotationally adjustable.
A sound absorbing material for reducing the sound generated in the high frequency region of the fan is provided respectively, and a sound absorbing plate for reducing the sound generated in the low frequency region of the fan due to open end reflection loss is provided between these sound absorbing materials. is there.

[0008]

With the above-mentioned technical means, at the time of installation, the opening provided in the floor panel of the free access floor in the room at appropriate positions separated by 900 mm or more by the hooking means on the periphery of the blowing plate. Be able to attach to each part. In addition, the overall weight has been reduced to a few kilograms,
The weight is significantly reduced so that even one person can move. Moreover, when switching the power supply of the fan or adjusting the rotation of the fan, the operation member is only rotated in one direction or the other direction. Further, from the viewpoint of acoustics, sound has been conventionally attenuated when the cross section is changed and passed, and this phenomenon has large attenuation at low frequencies. The sound is reduced, and the sound absorbing plate reduces the sound generated in the low frequency region of the fan.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The floor outlet with an air conditioning fan of the present invention is shown in FIG.
As shown in FIG. 3, an opening B formed in the floor panel A is provided at the upper end of a short-bottomed tubular outlet body 3 having a conditioned air suction hole 2 formed in the center of the bottom plate 1. A blow-out plate 4 which is hung on and taken off from and attached to is detachably provided.
A stepped insertion hole 5 is provided at the center of the air blower, and a large number of conditioned air blowout holes 6 are provided at appropriate intervals on the peripheral edge of the blowout plate 4.

An AC current fan 7 is provided in the lower portion of the outlet main body 3, and several fixing screws 9 are provided between the peripheral portion of the upper mount plate 8 and the peripheral portion of the bottom plate 1. Mount it on the upper side of this fan 7 and mount plate 8
In the vicinity of the central portion of the bottom plate 1, there is provided a ventilation hole 10 for allowing the conditioned air sucked from the suction hole 2 of the bottom plate 1 to flow into the outlet main body 3, and in the central portion of the mount plate 8, several mounting plates 11 are provided. It is supported by the support rod 12.

The mounting plate 1 at the center of the mount plate 8
A controller 13 for adjusting the rotation of the fan 7 is attached to the upper side of 1 via an insulator 14 on the lower side.
The drip-proof cover 16 having the holes is attached.

In the stepped insertion hole 5 of the blow-out plate 4, the insertion hole 1 for inserting a coin is formed at the center of the upper surface of the shaft head 17.
The operating member 21 in which a rotary shaft 19 provided with 8 and a shaft 20 having a switching piece (not shown) at the lower end portion are connected to each other is a switching piece on the upper surface of the controller 13 The fan 7 is supported in the shaft hole 15 of the drip-proof cover 16 via a bearing 22 so as to be fitted (not shown) so that the power supply of the fan 7 can be switched and the rotation of the fan 7 can be adjusted.

Further, on the inner peripheral surface of the upper portion of the outlet main body 3, there is provided a sound absorbing material 23 such as felt for reducing noise generated in the high frequency region of the fan 7, and the outlet main body 3 is also provided.
A sound absorbing material 24 such as glass wool for reducing the sound generated in the high frequency region of the fan 7 is provided on the inner peripheral surface of the substantially central portion in the vertical direction
A ventilation hole 25 for the conditioned air is provided between the sound absorbing members 23 and 24 on the central side except for the peripheral portion of the upper part, and the low frequency region of the fan 7 is generated by the open end reflection loss. A ring-shaped sound absorbing plate 26 having a hook shape in cross section for reducing sound is provided, and an AC power supply 27 is connected to an appropriate position on the lower surface of the bottom plate 1 of the outlet main body 3.

[0015]

As described above, the floor outlet with an air-conditioning fan of the present invention has a large number of holes in the peripheral portion at the upper end of a short tubular outlet body 3 having a bottom plate 1 having an intake hole 2 for conditioned air. Air-conditioning air blowout holes 6 are provided at appropriate intervals to provide blowout plates 4, and a fan 7 is fixed to the lower part of the blowout port main body 3 and a mount plate 8 is fixed to the upper side thereof.
A controller 13 for adjusting the rotation of the fan 7 is attached to the upper side of the central portion of the controller 13. An operating member 21 is attached to the central portion of the blower plate 4, and a lower end of the operating member 21 penetrates the blower plate 4 to provide an upper surface of the controller 13. The fan 7 is supported so that it can be switched between power sources and can be rotationally adjusted so that it can be fitted to the switch piece of the fan 7. Sound absorbing materials 23 and 24 for reducing the sound generated in the high frequency region of 7 are provided,
Since the sound absorbing plate 26 for reducing the sound generated in the low frequency region of the fan 7 due to the reflection loss at the open end is provided between the sound absorbing materials 23, 24, one piece of the conventional sound absorbing plate 26 is installed at the time of installation. Free access floor (600x600 mm)
Rather than mounting one to four on each side, by means of the hooking means on the periphery of the blow-off plate 4, they are mounted on the floor panel A of the indoor free access floor at the openings B respectively drilled at appropriate positions separated by 900 mm or more. Therefore, it is possible to install the airflow so that the airflow distribution is not disturbed.

In addition, the floor outlet with an air conditioning fan of the present invention is provided with an outlet plate 4 on the upper end of the outlet main body 3, and the fan 7, controller 13, operating member 2 in the outlet main body 3.
1, the sound absorbing material 23, 24, the sound absorbing plate 26, etc. are provided, so that one to four air outlets are attached to one free access floor (600x600 mm) as in the conventional method, and free access Compared to the one with a built-in face fan and control mechanism on the bottom surface of the floor, the total weight is a few kilograms, which is extremely lightweight, so even one person can move and set it up. The work is extremely easy.

Further, the operating member 21 is provided at the center of the blowing plate 4.
The lower end of the
By supporting the power supply of the fan 7 so as to be switchable and adjustable in rotation so as to be fitted to the switch piece on the upper surface, the power supply of the fan 7 can be performed by a simple operation only by rotating the operation member 21 in one direction or the other direction. Not only is it possible to control the switching of the fan and the rotation of the fan 7, but a remote control device for switching the power source and the like as in the conventional case are not required, so that the cost can be reduced and the economical effect is great.

Further, on the inner peripheral surface of the upper portion of the outlet main body 3 and the inner peripheral surface of the central portion in the up-down direction, sound absorbing materials 23 and 24 for reducing the sound generated in the high frequency region of the fan 7 are provided, respectively. During 24, fan 7 due to open end reflection loss
By providing the sound absorbing plate 26 for reducing the sound generated in the low frequency region, sound is conventionally attenuated when the cross section is changed and the sound is passed, and this phenomenon is greatly attenuated at the low frequency. In addition to the advantage of, each sound absorbing material 23, 2
4 can reduce the sound generated in the high frequency region of the fan 7 and that the sound absorbing plate 26 can reduce the sound generated in the low frequency region of the fan 7, and in the short tubular outlet body 3, the fan The generated sound of No. 7 can be remarkably reduced.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

2 is a cross-sectional plan view of FIG.

3 is a plan view of the mount plate of FIGS. 1 and 2. FIG.

[Explanation of symbols]

 1 Bottom plate 2 Suction hole 3 Blowout main body 4 Blowout plate 5 Stepped insertion hole 6 Blowout hole 7 Fan 8 Mount plate 9 Fixing screw 10 Vent hole 11 Mounting plate 12 Support rod 13 Controller 14 Insulator 15 Shaft hole 16 Drip-proof cover 17 Shaft head 18 Insertion hole 19 Rotating shaft 20 Shaft 21 Operating member 22 Bearing 23 Sound absorbing material 24 Sound absorbing material 25 Vent hole 26 Sound absorbing plate 27 AC power supply A Floor panel B Opening

Claims (1)

[Scope of utility model registration request] 1. A blow-off plate having a large number of blow-out holes for air-conditioning air provided at its peripheral edge is provided at the upper end of a short tubular blow-out body having a suction hole for air-conditioning air on the bottom surface, and the blow-out plate is provided. A fan is fixed to the lower part inside the outlet main body via a mount plate on the upper side, and a controller for adjusting the rotation of the fan is attached to the upper part of the central part of the mount plate, and the central part of the blower plate is attached to the central part. The operation member is rotatably adjustable and the power source of the fan is supported so that the lower end of the operation member penetrates the outlet plate and is fitted to the switch piece on the upper surface of the controller. Sound absorbing materials for reducing the sound generated in the high frequency region of the fan are provided on the peripheral surface and the inner peripheral surface of the central portion in the up-down direction, and between these sound absorbing materials, the low frequency region of the fan due to open end reflection loss is provided. of A floor outlet with an air-conditioning fan, which is equipped with a sound-absorbing plate that reduces the generated noise.