JPH07145959A - Ceiling ventilation type air conditioner - Google Patents

Abstract

PURPOSE:To improve comfortableness of an operating space by diffusing air conditioned air from a ceiling surface in an operating room, radiating heat to regulate a room temperature, and removing heat dissipated from an illuminator when the air conditioned air in which heat load in a room is treated is recovered. CONSTITUTION:An air conditioner 11 is arranged out of a room 10 to be air- conditioned. A ceiling surface 10a is formed by combining a suitable number of air-permeable ceiling panels. An air-conditioning box 21 is provided corresponding to the one panel. A suitable number of the boxes 21 are coupled to form an air supply duct 20. The duct 20 is connected to a discharge port 11a of the conditioner 11 to supply the conditioned air to the duct 20 and to diffuse it from the panel. An air suction port is formed at the upper surface of an illuminator 31 disposed on the surface 10a, and the air in the room 10 is sucked from the suction port. A shielding plate of a suitable shape is placed on the panel to regulate its opening rate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an office, an OA (office automation) room, a computer terminal room,
An air conditioner suitable for mass retailers, boutiques, etc., where the ceiling surface is composed of a panel with air permeability such as a perforated panel with a large number of through holes of an appropriate size formed on the panel. The present invention relates to a ceiling ventilation type air conditioner that can be conditioned by blowing conditioned air into a room through a through hole or the like and can also expect air conditioning in the room by radiation from the ceiling surface.

[0002]

2. Description of the Related Art FIG. 9 shows a schematic construction of a duct type ceiling blowout air conditioning system which is a conventional ceiling ventilation type air conditioning system of this type. A supply duct 4 is connected via a silencer 3 to a discharge port 2a of an air conditioner 2 arranged outside the room 1 to be air-conditioned. This supply duct 4 is provided in the ceiling back 7. The supply duct 4 is connected to the air outlets 5 exposed on the ceiling surface 1a of the chamber 1 as appropriate, and the conditioned air discharged from the air conditioner 2 is blown into the chamber 1 from the air outlets 5. To be done.

Further, the air in the room 1 flows out to the back of the ceiling 7 through the air suction port 6 provided in the ceiling surface 1a. This attic 7 and the back side 8 of the wall 1b of the room 1 are used as a return air chamber, and the air flowing out to the attic 7 passes through the attic 7 and the attic 8 and passes through the muffler 9 through an air conditioner. 2 is sucked in through the suction port 2b. Then, the conditioned air is adjusted by the air conditioner 2 to be discharged from the discharge port 2a.

Further, in addition to the above-mentioned system, there is a ceiling chamber air conditioning system in the ceiling ventilation type air conditioner. In this ceiling chamber air-conditioning system, a space above the ceiling and a space behind the wall form a supply chamber, and conditioned air is blown into the supply chamber from the outlet of the air conditioner. Then, conditioned air is blown into the room to be conditioned from the air outlet provided on the ceiling surface. In addition,
A fan is provided at this air outlet so that the conditioned air supplied into the inside of the ceiling is blown out into the room by the fan, or the inside of the ceiling is pressurized and the pressure causes the conditioned air from the air outlet. It is designed to blow out. The air in the room is sucked from the air suction port provided on the ceiling surface or the wall surface, and is sucked into the air conditioner via the return air duct communicating with the air suction port.

[0005]

However, in the above-mentioned conventional ceiling ventilation type air conditioner, in order to promote OA in the room to be air-conditioned and to change the working environment due to the aging of society, the following problems occur. There is a problem.

That is, the room temperature rises due to the exhaust heat from the OA equipment such as a word processor or a personal computer introduced into the work room, or the worker is exposed to the radiant heat from the OA equipment. Further, since the illuminance in the work room has become high due to the aging of the population, the room temperature is raised by the heat generated from the lighting device and the radiant heat, and the work environment is deteriorated.

In the conventional ceiling ventilation type air conditioner, as a measure for coping with such a deterioration of the working environment, the temperature of the conditioned air to be supplied is lowered or the blown air amount is increased to lower the room temperature. ing. However, if the air flow rate is increased, the load of the fan such as the air conditioner increases and noise is generated, or the airflow may cause a draft that makes the operator feel uncomfortable, or condensation may occur around the air outlet. There is. In addition, the energy consumed by the air conditioner increases due to a decrease in the supply air temperature, an increase in the air flow rate, and a decrease in the room temperature accompanying this.

[0008] The above changes in the work environment are OA
Not only office spaces such as equipment rooms but also stores such as mass retailers and boutiques that are required to provide a comfortable space for customers with high illuminance. Is occurring.

Therefore, the present invention proposes a ceiling ventilation type air conditioner which improves the present condition and provides a comfortable working environment without increasing the load of the air conditioner or generating a noise. Is intended.

[0010]

As a technical means for achieving the above object, a ceiling ventilation type air conditioner according to the present invention is formed by arranging an appropriate number of ventilation ceiling panels. In a ceiling ventilation type air conditioner for a work room having a ceiling surface, an air conditioning box in which a lower wall portion is formed by the ceiling panel is provided while being held on a ceiling base, and the air conditioning box is disposed on an adjacent ceiling panel. The air supply duct is connected to form the air supply duct, and conditioned air is supplied from the air conditioner to the air supply duct to blow a part of the conditioned air through the ceiling panel into the working room, and the rest is blown to the back of the ceiling. The air suction port communicating with the back of the ceiling is formed on the upper surface of the lighting device for lighting the work room, and the air in the work chamber is introduced into the back of the ceiling from the air suction port and returned to the air conditioner. .

Further, in order to make the air blowing amounts even at the upstream side and the downstream side of the air supply duct or to blow a particularly large amount of conditioned air to a desired position in the working chamber, It is also characterized in that a shielding plate for closing at least a part of the ceiling panel is provided on the ceiling panel forming the lower wall of the box so that the amount of conditioned air blown out can be changed.

Further, in order to obtain a good air conditioning efficiency depending on the conditioned air, the end of the air supply duct is communicated with the underfloor of the working chamber, and an air outlet is formed on the floor of the working chamber. The feature is that the conditioned air that flows through the air supply duct and reaches the underfloor is blown into the working room.

As the ceiling panel, a perforated panel in which a large number of through holes are formed in a plate material of metal or ceramics, metal fiber such as aluminum is pressed to be processed into a non-woven fabric, or metal or ceramics is sintered. Alternatively, a breathable panel can be used.

[0014]

The conditioned air discharged from the air conditioner flows through the air supply duct, and a part of the conditioned air is blown out into the working chamber through the ceiling panel forming the lower wall portion of the air supply duct. Then, the room is air-conditioned. Further, by using a material having good heat conduction for the ceiling panel, heat is radiated from the ceiling panel into the working chamber by the conditioned air flowing in the air supply duct, so that the working environment of the working chamber is improved. In addition, a part of the conditioned air is blown from the end of the air supply duct to the back of the ceiling to reduce the temperature rise of the conditioned air in the air supply duct, promote cooling of the ceiling panel, and improve radiation hardening. Planned.

Further, when the indoor air is sucked in through the air suction port, the air around the luminaire, which has been heated by the heat generated by the luminaire, is included in the return air and sucked. Therefore, it is possible to suppress the rise of the working room temperature due to the heat generated from the lighting equipment.

Further, by providing the ceiling panel with the shielding plate, the amount of conditioned air blown from the ceiling panel can be changed depending on the position of the air supply duct. For this reason, for example, a large amount of conditioned air can be blown to the portion where the OA equipment is arranged, or the blowing amount can be made uniform on the upstream side and the downstream side of the air supply duct.

Further, the air supply duct is communicated with the bottom of the double floor to blow out the conditioned air from under the double floor, for example, the conditioned air is blown to the OA equipment from below to exhaust heat from the OA equipment. The air whose temperature has been raised by the above is carried upward, is sucked through the air suction port provided on the ceiling surface, and returns to the air conditioner.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ceiling ventilation type air conditioner according to the present invention will be specifically described below based on the illustrated embodiments.

FIG. 1 shows a room equipped with this ceiling ventilation type air conditioner.
FIG. 1 is a vertical sectional view showing an outline of 10, and an air conditioner 11 is provided outside the chamber 10. The ceiling surface 10a of the chamber 10 is formed by combining an appropriate number of ceiling panels 12 made of a perforated panel in which an appropriate number of through holes are formed in a metal plate, as shown in FIG. The front and back of the ceiling panel 12, that is, the inside of the room 10 and the back of the ceiling 13 communicate with each other through the holes. Moreover, the aperture ratio of the ceiling panel 12 is selected to be appropriate for the operation described later. As shown in FIGS. 3 to 7, an air conditioning box 21 is provided for an appropriate one of the ceiling panels 12. As shown in FIGS. 1 to 5, an air supply duct 20 is formed by connecting an appropriate number of air conditioning boxes 21.

The ceiling panel 12 is a perforated panel in which a large number of through holes are formed in a metal plate or a ceramic plate, a panel formed by pressing aluminum fibers or other metal fibers into a non-woven fabric, and the like. A material having air permeability can be used. Further, for the operation described later, it is preferable to be processed by a material having good heat conduction.

FIG. 5 is a schematic perspective view showing the ceiling space 13 to the ceiling surface 10a. In the ceiling space 13, an appropriate number of beam members 14 constituting a ceiling base are arranged by channels or the like. As shown in FIGS. 6 and 7, the beam member 14 is supported via a hanger 16 by a hanging bolt 15 which is embedded and suspended in a floor base or the like on the upper floor of a building. And this beam material
An appropriate number of support rods 17 are arranged on the lower side of 14 by hooks 18 with the direction substantially orthogonal to the longitudinal direction of the beam 14 as the longitudinal direction. The upper end of the support bar 17 is formed on a flat surface 17a having an appropriate width, and the lower end is bent laterally and the tip is bent upward to form a hook 17b. . An adjusting bolt 18a is screwed onto the upper end portion of the hook 18, and the height position of the supporting rod 17 can be adjusted by moving the adjusting bolt 18 forward and backward.

The air-conditioning box 21 is made of the above-mentioned beam material.
The longitudinal direction of 14 is the flow direction of the conditioned air, and as shown in FIG. 6, the plate material is formed by bending so that the cross section in the flow direction is substantially trapezoidal, and the portion corresponding to the lower bottom of the trapezoid is open. There is. Further, as shown in FIG. 7, the shape along the flow direction is a main body 21a having a substantially rectangular central portion.
And both end portions of the main body portion 21a are appropriately reduced to be substantially rectangular connecting tube portions 21b and 21c protruding in the flow direction. The connecting pipe portion 21b is formed slightly smaller than the connecting pipe portion 21c so that it can be accommodated in the connecting pipe portion 21c. In addition, the tip of the connecting pipe portion 21c is bent inward, the tip is further bent toward the main body portion 21a, and the receiving spring portion is appropriately bulged inward from the tip to the end. 21d is formed. Therefore, while the connecting pipe portion 21b is inserted into the connecting pipe portion 21c, these connecting portions are appropriately sealed and are not loosened with time. And the adjacent air conditioning box
The air supply duct 20 is formed by connecting the connection pipe portion 21b and the connection pipe portion 21c of 21. Further, a heat insulating material 22 is adhered to the upper wall and the side wall of the main body 21a of the air conditioning box 21 to keep the inside of the air conditioning box 21 warm, cold and absorb sound. When the air supply duct 20 is bent halfway, the connecting pipe portions 21b and 21c are formed on two adjacent surfaces of the air conditioning box 21 located at the bent portion.

The air conditioning box 21 is connected to the connecting pipe portion 21.
The c is mounted on the ceiling base by being placed on the flat portion 17a at the upper end of the support rod 17.

The lower surface of the air conditioning box 21 is constituted by the ceiling panel 12, so that the interior of the air conditioning box 21 and the chamber 10 are communicated with each other through the through hole of the ceiling panel 12. The ceiling panel 12 provided with the air conditioning box 21 has a substantially box shape, and the upper end of one side wall in the flow direction of the conditioned air is bent outward to form a flange 12a. Further, a tip portion of the flange portion 12a is bent downward to form a hook portion 12b. In addition, the upper end of the other side wall is bent inward to bend the flange.
12c is formed, and the tip of the flange 12c is bent downward to form a hook 12d. The ceiling panel 12 is supported on the ceiling base by engaging the flange portions 12a and 12c with the hook portions 17b at the lower end portion of the support rod 17.

As shown in FIG. 6, a heat insulating material 22 is housed inside the ceiling panel 12 in the portion where the air conditioning box 21 is not provided, as shown in FIG.

On the ceiling panel 12 provided with the air conditioning box 21, as shown in FIGS. 6 and 7,
A shield plate 23 having an appropriate shape is placed. By covering a part of the ceiling panel 12 with the shielding plate 23, the aperture ratio of the ceiling panel 12 can be changed.
By making the shield plate 23 slidable with respect to the ceiling panel 12, the aperture ratio can be continuously changed.

Further, a skirt portion 24 is provided at the lower end of the main body portion 21a of the air conditioning box 21 so as to be able to move up and down, and the skirt portion 24 can be maintained at the height position by tightening the set screw 24a. ing. Further, a packing material 25 in which magnetic powder is mixed in rubber or synthetic resin is attached to the lower end of the skirt portion 24, and when the ceiling panel 12 or the shielding plate 23 is formed of metal, The lower end of the skirt portion 24 is magnetically attached to the ceiling panel 12 or the shielding plate 23 so that the inside of the air conditioning box 21 is sealed. Further, a floating prevention metal fitting 26 is provided on the lower portion of the surface of the air conditioning box 21 in the flow direction of the main body portion 21a. By holding the upper end portion of the support rod 17 through the lower portion of 18 in cooperation with the joining pipe portion 21c, it is possible to prevent the joining pipe portion 21c from falling off the flat surface 17a of the support rod member 17, and to perform air conditioning. The box 21 is designed not to fall due to vertical movements such as during an earthquake.

An appropriate number of the air-conditioning boxes 21 are provided for each ceiling panel 12 along the longitudinal direction of the beam member 14, and the connection tubes 21b and the connection tubes of the adjacent air-conditioning boxes 21 are connected to each other. The air-conditioning box 21 is connected by engaging with the portion 21c to form the air supply duct 20. FIG. 2 is a plan view of the air supply duct 20. In this embodiment, four air supply ducts 20 are arranged in a substantially U shape. One end of the air supply duct 20 is connected to the outlet 11a of the air conditioner 11 via a silencer 11b so that conditioned air conditioned by the air conditioner 11 is supplied into the air supply duct 20. There is. The other end of the air supply duct 20 is located near the air conditioner 11 and is open. Therefore, the conditioned air that has reached the other end by exchanging heat with the ceiling panel 12 through the air supply duct 20 is released to the ceiling back 13. In the configuration shown in FIG. 1, the ceiling 13 and the wall 19 of the room 10 communicate with each other to form a return air chamber, and the suction port 11c of the air conditioner 11 is opened to face the return air chamber. The air in the return air chamber is sucked through the muffler 11d and returns to the air conditioner 11. In addition, in the configuration shown in FIGS. 2 to 4, the return air chamber is configured only in the ceiling space 13. If the back air chamber 19 is also constituted by the back wall 19, the air in the room 10 can be easily returned to the air conditioner even from a low place in the room 10.

Further, an appropriate number of lighting fixtures 31 for illuminating the inside of the room 10 are arranged on the ceiling surface 10a. The luminaire 31 is attached so as to project upward from the ceiling surface 10a, and a through hole is formed on the upper surface of the luminaire 31 as shown in FIG. 3 to form an air suction port 31a. The inside of the room 10 and the ceiling 13 are communicated with each other through the suction port 31a.

The operation of the ceiling ventilation type air conditioner according to the present invention constructed as described above will be described below.

The conditioned air sent from the outlet 11a of the air conditioner 11 is sent to the air supply duct 20. The conditioned air advances in the air supply duct 20 and is blown into the chamber 10 through the through hole of the ceiling panel 12. Further, when the conditioned air advances in the air supply duct 20, heat is transferred from the conditioned air to the ceiling panel 12, and the heat is radiated from the ceiling panel 12 into the chamber 10. Therefore, the inside of the room 10 is air-conditioned by the conditioned air blown out from the ceiling panel 12 and the radiant heat from the surface of the ceiling panel 12.

The air in the room 10 rises in temperature due to the exhaust heat from the OA equipment and workers in which it is placed, and rises to the ceiling surface.
Reach 10a. Since the air suction port 31a is formed on the upper surface of the luminaire 31 arranged on the ceiling surface 10a, the ceiling surface 10
The air that has reached a flows out from the air suction port 31 a of this lighting fixture 31 to the ceiling space 13. When the air in the room 10 passes through the air suction port 31a formed in the lighting fixture 31, it is accompanied by hot air emitted from the lighting fixture 31, so that the room temperature rises due to the heat generated by the lighting fixture 31. It can be suppressed. The air flowing out to the ceiling space 13 passes through the ceiling space 13 through the wall space 19, is sucked from the suction port 11c of the air conditioner 11 and is appropriately adjusted, and then is discharged from the discharge port 11a. Therefore, ventilation of the air in the room 10 is promoted, and a comfortable work space can be provided. The air supply duct
Since the tip of 20 is open, it does not blow off from the ceiling panel 12 and transfers heat to the ceiling panel 12 to supply air.
The conditioned air that has passed through 20 is discharged from the tip into the inside of the ceiling 13, is mixed with the return air from inside the room 10, and returns to the air conditioner 11.

When the air supply duct 20 becomes long as shown in FIG. 2, the pressure of the conditioned air changes between the upstream side and the downstream side of the air supply duct 20. There is a risk that there will be too much blowing on the downstream side and there will be insufficient blowing on the downstream side. Alternatively, there may be a case where an OA device or the like is arranged at a portion corresponding to an intermediate position of the air supply duct 20 and a large amount of conditioned air is desired to be blown to that position. Therefore, the position of the shielding plate 23 placed on the ceiling panel 12 is adjusted to change the aperture ratio of the ceiling panel 12 according to the position of the air supply duct 20. For example, if the opening ratio is made small on the upstream side and made large on the downstream side, it is possible to make the blowout amount uniform over the entire air supply duct 20. In addition, by increasing the aperture ratio of the ceiling panel 12 in the portion corresponding to the position where the OA equipment or the like is arranged, and decreasing the aperture ratio in the other portions, O
A large amount of conditioned air can be blown to the portion where the A device and the like are arranged.

Next, the embodiment shown in FIG. 8 will be described. In this embodiment, a vertical duct 32 is arranged on the wall surface of the chamber 10, and the air supply duct 20 and the lower part 33 of the double floor are communicated with each other through the vertical duct 32. And the floor surface 10b of the room 10
The air outlet 34 is arranged at an appropriate position so that the conditioned air supplied from the air supply duct 20 through the vertical duct 32 to the bottom 33 of the double floor is blown into the chamber 10 from the air outlet 34. I am doing it.

In this embodiment, it is possible to prevent the conditioned air from being blown from the ceiling panel 12 and to blow all the conditioned air from the floor surface 10b.
This is preferable for a work environment in which OA progresses and a large amount of heat and radiant heat are generated, and individual air conditioning adjustment and furniture layout flexibility are required. The return air is sucked from the lighting equipment 31 arranged on the ceiling surface 10a into the ceiling space 13 and returns to the air conditioner 11 as in the above-described embodiment.

[0036]

As described above, according to the ceiling ventilation type air conditioner according to the present invention, the conditioned air is blown into the working room through the ceiling panel having the air permeability forming the ceiling surface and disposed on the ceiling surface. Since the air in the working chamber is sucked from the illuminating device to be returned to the air conditioner, the ventilation of the air in the working chamber is promoted and the air conditioning can be achieved.

Further, the conditioned air discharged from the air conditioner is transferred to the ceiling panel when flowing through the air supply duct, and the heat is radiated from the ceiling panel into the working chamber to achieve air conditioning in the working chamber. .

Moreover, since the conditioned air that has processed the heat load in the work room is accompanied by the hot air released from the lighting equipment when being sucked in through the air suction port formed in the lighting equipment, the hot air emitted from the lighting equipment is accompanied. As a result, it is possible to prevent the work environment in the work room from being damaged.

Furthermore, if a shielding plate is provided on the ceiling panel so that the aperture ratio of the ceiling panel can be adjusted, the amount of conditioned air blown out can be made substantially uniform on the upstream side and the downstream side of the air supply duct. Air conditioning is performed evenly over the entire work room, or a large amount of conditioned air is blown to a desired position.
A better work space can be provided to offices, OA rooms, computer terminal rooms, mass retailers, boutiques, etc.

Further, if the air supply duct is connected under the double floor so that conditioned air is blown from the floor surface, the amount and direction of the blown air can be adjusted according to personal preference, and when changing the layout of furniture. Like the furniture, the floor outlet can be moved, and good air conditioning can be performed.

[Brief description of drawings]

FIG. 1 is a schematic view for explaining a ceiling ventilation type air conditioner according to the present invention, and is a cross-sectional view of a working room equipped with the ceiling ventilation type air conditioning device.

FIG. 2 is a plan view showing the back of the ceiling when the ceiling ventilation type air conditioner is mounted.

FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, with a part omitted.

FIG. 4 is a cross-sectional view taken along the line BB in FIG. 2, with a part omitted.

FIG. 5 is a perspective view schematically showing a state in which an air supply duct of this ceiling ventilation type air conditioner is arranged behind the ceiling, and a part thereof is omitted.

6 is a cross-sectional view taken along the line C-C in FIG. 5, with a part omitted.

FIG. 7 is a cross-sectional view taken along line D-D in FIG. 5, with a part omitted.

FIG. 8 is a sectional view corresponding to FIG. 1, showing another embodiment of the ceiling ventilation type air conditioner according to the present invention.

FIG. 9 shows a schematic configuration of a duct type ceiling blowout air conditioning system, which is an example of a conventional ceiling ventilation type air conditioning device.
It is sectional drawing equivalent to FIG.

[Explanation of symbols]

 10 rooms 10a Ceiling surface 11 Air conditioner 11a Discharge port 11c Suction port 12 Ceiling panel 13 Ceiling back 14 Beam 17 Support rod 19 Wall behind 20 Air supply duct 21 Air conditioning box 21a Main body 21b Connection pipe 21c Connection pipe 21d Receiving spring part 22 Heat insulating material 23 Shielding plate 24 Skirt part 24a Set screw 25 Packing 26 Lifting prevention metal fitting 31 Lighting fixture 31a Air suction port 32 Vertical duct

Claims (3)

[Claims] 1. A ceiling ventilation type air conditioner for a work room having a ceiling surface formed by appropriately arranging a number of ceiling panels having air permeability, wherein an air conditioning box having a lower wall portion formed by the ceiling panel. Are held on the ceiling base, and the air conditioning boxes arranged on the adjacent ceiling panels are connected to form an air supply duct, and conditioned air is supplied from the air conditioner to the air supply duct to perform the harmony. Part of the air is blown into the work room through the ceiling panel, and the rest is blown to the back of the ceiling to form an air suction port communicating with the back of the ceiling on the upper surface of the lighting device for lighting the work room. A ceiling ventilation type air conditioner, which introduces the air in the working room from the mouth into the ceiling and returns it to the air conditioner. 2. A ceiling panel, which forms a lower wall portion of the air conditioning box, is provided with a shielding plate that closes at least a part of the ceiling panel to freely change the amount of conditioned air blown out. The ceiling ventilation type air conditioner according to claim 1. 3. A ceiling ventilation type air conditioner for a working room having a ceiling surface formed by arranging an appropriate number of air permeable ceiling panels, wherein the air conditioning box has a lower wall formed by the ceiling panels. Are held on the ceiling base, and the air conditioning boxes arranged on the adjacent ceiling panels are connected to form an air supply duct, and conditioned air is supplied from the air conditioner to the air supply duct to perform the harmony. A part of the air is blown into the working room through the ceiling panel, and the ceiling panel forming the lower wall of the air conditioning box,
A shielding plate that closes at least a part of the ceiling panel is arranged so that the amount of conditioned air blown out can be freely changed, and the end of the air supply duct is communicated with the underfloor of the working chamber to provide a floor surface of the working chamber. An air outlet is formed in the room to blow out conditioned air flowing under the floor through the air supply duct into the working room, and an air inlet communicating with the ceiling above the ceiling of the luminaire for lighting in the working room. A ceiling ventilation type air conditioner, which is formed, and introduces the air in the working chamber to the back of the ceiling from the air suction port and returns it to the air conditioner.