JP4919845B2 - Air conditioning equipment - Google Patents

Description

  The present invention relates to an air conditioner arranged above a ceiling portion of a building in order to branch and send conditioned air supplied from an air conditioner in a plurality of directions.

  Conventionally, there is an air conditioner installed as shown in FIG. 7 for branching and feeding conditioned air supplied from an air conditioner in a plurality of directions. The air conditioning equipment 70 includes an air conditioning duct 72 for feeding conditioned air formed by the air conditioner 71, and a branch chamber 73 for branching and sending the conditioned air sent from the air conditioning duct 72 in a plurality of directions. I have. The conditioned air branched from the branch chamber 73 and sent out in a plurality of directions is sent into the room from the outlet 75 via the flexible duct 74.

  In the case of the air conditioning equipment shown in FIG. 7, since all the conditioned air that is branched and sent out in a plurality of directions is supplied from the air conditioner, the air conditioner needs to be capable of supplying a large amount of conditioned air. For this reason, a large-sized and high-power air conditioner must be used, and the energy consumption is also large.

  In view of this, air conditioning equipment is proposed that is configured to draw room air from the air suction port using the injection force of low-temperature air supplied from the air conditioner and mix it with conditioned air and blow it out from the air outlet. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 55-150930

  The "terminal air conditioner" described in Patent Document 1 is a method of mixing indoor air attracted by the jet power of low-temperature conditioned air supplied from an air conditioner with the low-temperature conditioned air and adjusting the desired temperature to the ceiling surface. Since it is a system which blows out into the room from the installed outlet, the supply amount of the low-temperature conditioned air can be reduced, and the fan and the air conditioner can be downsized and the energy consumption can be reduced. However, not only is the structure complicated, but it is necessary to install one “end air conditioner” for each outlet, which makes the production and construction of the apparatus cumbersome and difficult to maintain. .

  The problem to be solved by the present invention is to provide an air conditioner that has a simple structure that is easy to manufacture and construct, and that can reduce the size of the air conditioner, reduce energy consumption, and reduce the number of installed units. is there.

The air conditioning equipment of the present invention is an air conditioning equipment provided in an air conditioning duct that conveys conditioned air supplied from an air conditioner,
The flow rate adjusting means for adjusting the amount of conditioned air, the attraction part provided downstream from the flow rate adjustment means for inducing air outside the air conditioning duct into the air conditioning duct, the conditioned air and the attraction part A branching section that mixes with the induced air drawn into the air conditioning duct and branches to a plurality of outlets ,
The attraction part comprises an attraction nozzle for ejecting the conditioned air, and an attraction guide for attracting air outside the air conditioning duct into the air conditioning duct by the ejection of the conditioned air,
A shielding member for diffusing conditioned air flowing in the air conditioning duct is provided in the air conditioning duct between the flow rate adjusting means and the attraction nozzle .

  With such a configuration, the low-temperature conditioned air supplied from the air conditioner and adjusted in flow rate by the flow rate adjusting means flows in while attracting the nearby air into the air conditioning duct when passing through the induction unit. It is possible to supply air adjusted to the air-conditioned space. In addition, even if the amount of conditioned air supplied from the air conditioner is reduced in advance, the amount of air necessary for air conditioning can be secured while adjusting to a desired temperature by mixing the air attracted by the attracting unit. For this reason, it is possible to obtain the required air conditioning capability even with an air conditioner that is smaller and has a smaller output than before, and it is possible to reduce the size of the air conditioner, reduce energy consumption, and reduce the number of installed units.

  Further, the amount of conditioned air supplied from the air conditioner can be adjusted by the flow rate adjusting means, so that the amount of air attracted by the attracting section can be adjusted, and the total amount of conditioned air supplied to the conditioned space can also be controlled. Further, if the flow rate adjusting means is controlled to open and close by a detection signal from a wind speed sensor provided in the air conditioning duct or a signal from a room temperature sensor, the supply of conditioned air required by the occupant can be automatically controlled.

Furthermore, in the air conditioning equipment of the present invention, the attraction section includes an attraction nozzle that ejects the conditioned air, and an attraction guide that attracts air outside the air conditioning duct into the air conditioning duct by the conditioned air ejection. Prepared,
The air-conditioning duct between the attraction nozzle and the flow rate adjusting means, Ru Tei provided a shielding member for diffusing the conditioned air flowing within the air conditioning duct. By such a configuration, the conditioned air flowing from the flow adjusting means to attract the nozzle is diffused by the shielding member, so that the outflow from the attraction nozzle in a state that has spread to the entire air-conditioning duct, in particular from the opening periphery of the attraction nozzle A strong air current will be ejected, and the effect of attracting nearby air will increase. Since the attracting part includes an attracting nozzle that ejects conditioned air and an attracting guide that attracts air into the air conditioning duct together with the conditioned air that is ejected, the attracting unit exhibits an excellent attracting action. Moreover, since it is a simple structure, manufacture and construction are also easy.

  Further, if a guide vane is provided in the air conditioning duct between the attraction guide and the branch portion, the conditioned air and the attraction air are rectified by the guide vane, so that the harmonized mixed air fed to the branch portion is homogeneous. In addition to improving the performance, the conditioned mixed air that has become homogeneous can be uniformly distributed to a plurality of outlets.

  On the other hand, if air purifying means is provided in the air conditioning duct downstream from the attracting section, foreign substances contained in the attracting air that has flowed into the air conditioning duct together with conditioned air in the attracting section are collected and removed by the air purifying means. Therefore, the cleanliness of the conditioned air flowing out from the branching portion is increased, and clean conditioned air can always be supplied into the air-conditioned space, which is hygienic.

  Further, if a heat insulating material is attached to the outer surfaces of the attracting nozzle and the attracting guide, it is possible to avoid contact of the adjacent air with the outer surfaces of the attracting nozzle and the attracting guide which are in a low temperature state due to contact with conditioned air. Therefore, condensation can be prevented.

  According to the present invention, it is possible to provide an air conditioning facility that has a simple structure that can be easily manufactured and installed, and that can reduce the size of an air conditioner, reduce air conditioning energy, and reduce the number of installed units.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view showing an air conditioner according to an embodiment of the present invention, FIG. 2 is a partially cutaway plan view of the air conditioner shown in FIG. 1, and FIG. 3 is a partially cutaway side view of the air conditioner shown in FIG. 4 is a partially cutaway plan view of the air conditioning equipment shown in FIG. 2, FIG. 5 is a cross-sectional view showing a part of the air conditioning equipment shown in FIG. 3, and FIG. 6 is a partially omitted view seen from the direction of arrow X in FIG. It is.

  As shown in FIGS. 1 to 3, the air conditioning facility 10 of the present embodiment is a facility provided in an air conditioning duct 12 that conveys low-temperature conditioned air supplied from an air conditioner 11. The air conditioner 10 is disposed in communication with the flow rate adjustment damper 13, an induction nozzle 14 provided in communication with the flow rate adjustment damper 13, a mixing duct 15 having a funnel-shaped induction guide 15 a, and the mixing duct 15. A flow branch chamber 16.

  The flow rate adjustment damper 13 is one of flow rate adjustment means for controlling the flow rate of the low-temperature conditioned air supplied from the air conditioner 11 via the air conditioning duct 12, and the conditioned air that has passed through the flow rate adjustment chamber 13 is downstream. An attraction nozzle 14 is provided in communication with the air flow rate adjustment chamber 13 for ejection. Further, in order to allow the low-temperature conditioned air ejected from the attracting nozzle 14 and the air attracted from the vicinity to flow in, the diameter-enlarged portion 15b is opposed to the attracting nozzle 14, and a funnel-shaped attracting guide is provided with a gap S therebetween. 15a is arranged. That is, an attracting portion is formed by the attracting nozzle 14 and the attracting guide 15a. The attraction nozzle 14 has a rectangular cross section, and has a tapered shape in which the long side dimension of the rectangle remains unchanged and the short side dimension gradually decreases toward the flow direction of the conditioned air. As shown in FIGS. 2 and 3, the gap S refers to the distance between the downstream end of the attracting nozzle 14 and the downstream end of the enlarged diameter portion 15b of the attracting guide 15a.

  Further, a flow path branch, which is one of the branch portions for causing the mixed air of the low-temperature conditioned air and the induction air flowing from the mixing duct 15 (hereinafter referred to as “mixed conditioned air”) to flow out to the plurality of outlets 16a. A chamber 16 is disposed in communication with the mixing duct 15. The mixed conditioned air branched off from the plurality of outlets 16a of the flow path branching chamber 16 is supplied into the air-conditioned spaces from the plurality of outlets 18 installed in the room.

  In this embodiment, the cross-sectional size of the air conditioning duct 12 is 600 mm in the long side direction and 200 mm in the short side direction, the length of the attracting nozzle 14 is 250 mm, and the tip opening size is 600 mm in the long side direction. The short side direction is 100 mm. The gap S is preferably 50 to 200 mm, and is 100 mm in this embodiment. However, these dimensions are examples and are not limited.

  As shown in FIG. 1 and FIG. 2, a plurality of cylindrical outlets 16a are provided on the outer surface of the flow path branching chamber 16, and a base of a circular tubular flexible duct 17 is provided in each of the outlets 16a. The ends are connected, and the ends of the ducts 17 are connected to the air outlets 18 respectively. Further, a shielding member 20 (see FIG. 5) for diffusing conditioned air flowing in the flow path 19 is provided in the flow path 19 that communicates the flow rate adjusting damper 13 and the attracting nozzle 14.

  As shown in FIGS. 2 and 3, a plurality of guide vanes 22 are provided in a flow path 21 that communicates the mixing duct 15 and the flow path branch chamber 16, and the flow path 21 is located downstream of the attraction guide 15 a. Air purifying means 23 is provided in the vicinity of the boundary with the flow branch chamber 16. Further, as shown in FIG. 3, since the air purifying means 23 can be detached by opening the open / close door 24 provided on the upper surface of the flow path branching chamber 16, regular maintenance is possible. Furthermore, as shown in FIGS. 2 to 4, polyethylene foam, which is a heat insulating material 25, is attached to the outer surfaces of the attracting nozzle 14 and the attracting guide 15 a.

  As shown in FIGS. 4 to 6, the flow rate adjustment damper 13 includes a propeller-type wind speed sensor 26 that is locked to a support shaft 27 that is disposed horizontally across the conditioned air flow path 13 a, and a wind speed sensor 26. A plurality of drive shafts 28 arranged horizontally across the upper and lower portions in the downstream flow path 13a, plate-like opening / closing members 29 respectively attached to the drive shafts 28, and the drive shafts 28 are driven to rotate. Drive device 30. The propeller 26a of the wind speed sensor 26 is rotated by the low-temperature conditioned air flowing in the flow path 13a of the flow rate adjusting damper 13, and a detection signal corresponding to the wind speed is transmitted from the wind speed sensor 26 to the drive device 30, and the drive device 30 is opened and closed. The member 29 is opened and closed and controlled so as to have a set air volume.

  Since the wind speed sensor 26 can slide in the direction of the support shaft 27, it can be fixed at an arbitrary position on the support shaft 27. Therefore, when the air flow on the upstream side of the wind speed sensor 26 is disturbed (biased), the wind speed sensor 26 can be slid along the support shaft 27 so that the wind speed can be accurately detected. .

  As shown in FIG. 5, in the flow rate adjustment damper 13, the wind speed sensor 26 detects the wind speed of the low-temperature conditioned air flowing in the flow path 13 a, and according to the detection signal transmitted from the wind speed sensor 26, the driving device 30. Controls the passage flow rate of the conditioned air by rotating the drive shaft 28 to change the posture of the opening / closing member 29 and adjusting the opening degree of the flow path 13a.

  In the air conditioner 10, the low-temperature conditioned air supplied from the air conditioner 11 and adjusted in flow rate by the flow rate adjusting damper 13 flows out of the induction nozzle 14 and flows into the enlarged diameter portion 15b of the funnel-shaped induction guide 15a. It flows in while attracting air. For this reason, after the two airs of the low-temperature conditioned air and the induced air supplied from the air conditioner 11 flow into the mixing duct 15, the conditioned mixed air is sent to the flow branch chamber 16.

  Therefore, even if the amount of conditioned air supplied from the air conditioner 11 is reduced in advance, the air attracted by the attraction guide 15a is mixed with the conditioned air, so that the air volume necessary for air conditioning is secured while adjusting to the desired temperature. can do. For this reason, even if it is the air conditioner 11 with a smaller output than before, a required air conditioning capability can be obtained, and the air conditioner 11 can be downsized and energy consumption can be reduced.

  Further, the attracting part for attracting air in the vicinity is a simple arrangement in which the diameter-enlarged part 15 b of the funnel-shaped attracting guide 15 a provided in the mixing duct 15 is opposed to the attracting nozzle 14 communicating with the flow rate adjusting damper 13. Because of its simple structure, it is easy to manufacture and install.

  Further, as shown in FIGS. 5 and 6, a rectangular plate-shaped shielding member 20 is provided so as to horizontally traverse the flow path 19 that connects the flow rate adjusting damper 13 and the induction nozzle 14. Therefore, the low-temperature conditioned air flowing from the flow adjustment damper 13 to the attracting nozzle 14 (see FIG. 4) is diffused by the shielding member 20 and flows out from the attracting nozzle 14 in a state of spreading over the entire flow path. It is excellent in action.

  Further, as shown in FIGS. 2 and 3, by providing a plurality of guide vanes 22 in the flow channel 21 that communicates the mixing duct 15 and the flow channel branching chamber 16, the harmony that passes through the flow channel 21 is achieved. Since air and induced air are sent to the flow branching chamber 16 in a state where the air is rectified by the guide vanes 22, the homogeneity of the harmonized mixed air can be improved.

  Further, as shown in FIGS. 2 and 3, since the air purifying means 23 is provided in the vicinity of the boundary between the flow path 21 and the flow path branch chamber 16 located on the downstream side of the induction guide 15a, the induction nozzle 14 The air purification means 23 can collect and remove foreign substances contained in the attracting air that has flowed in from the attracting guide 15a along with the flowing conditioned air, and the cleanliness of the conditioned mixed air that flows out from the flow branch duct 16 is increased. be able to.

  On the other hand, as shown in FIG. 2 to FIG. 4, by attaching polyethylene foam, which is a heat insulating material 25, to the outer surfaces of the attracting nozzle 14 and the attracting guide 15 a that constitute the attracting part, a low temperature state is brought about by contact with conditioned air. It is avoided that the near air contacts the outer surface of a certain attracting nozzle 14 or attracting guide 15a. For this reason, generation | occurrence | production of the dew condensation in the attracting nozzle 14 or the attracting guide 15a can be prevented.

  Since the position where the heat insulating material is attached is not limited to the above-mentioned part, the heat insulating material (for example, glass wool having a thickness of about 25 mm or the like) is provided on the outer surface of the air conditioning duct 12 upstream of the induction nozzle 14 or the inner surface of the flow branch chamber 16. ) Can also be attached. However, since the space between the outer surface of the attracting nozzle 14 and the inner surface of the attracting guide 15a is a flow path of the attracting air, if the heat insulating material 25 is excessively thick, the flow path becomes narrow and the inflow of the attracting air is inhibited. There is. For this reason, if thin foamed resin like a polyethylene foam is used like this embodiment, the reliable heat retention effect (condensation prevention effect) can be acquired, ensuring the flow path of attraction air.

  The air-conditioning equipment of the present invention can be widely used as a part of an air-conditioning system constructed in an office building or factory building.

It is a top view which shows the air-conditioning equipment which is embodiment of this invention. It is a partially cutaway top view of the air conditioning equipment shown in FIG. It is a partially cutaway side view of the air conditioning equipment shown in FIG. It is a partially cutaway top view of the air conditioning equipment shown in FIG. It is sectional drawing which shows a part of air conditioning equipment shown in FIG. FIG. 6 is a partially omitted view seen from the direction of arrow X in FIG. 5. It is a top view which shows the conventional air conditioning equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Air conditioning equipment 11 Air conditioner 12 Air conditioning duct 13 Flow control damper 13a, 19, 21 Flow path 14 Induction nozzle 15 Mixing duct 15a Induction guide 15b Expanding part 16 Channel branch chamber 16a Outlet 17 Flexible duct 18 Outlet 20 Shielding member 22 Guide vane 23 Air purifying means 24 Opening / closing door 25 Insulating material (polyethylene foam)
26 Wind speed sensor 26a Propeller 27 Support shaft 28 Drive shaft 29 Opening / closing member 30 Drive device S Clearance

Claims (4)

An air conditioning facility provided in an air conditioning duct for conveying conditioned air supplied from an air conditioner,
The flow rate adjusting means for adjusting the amount of conditioned air, the attraction part provided downstream from the flow rate adjustment means for inducing air outside the air conditioning duct into the air conditioning duct, the conditioned air and the attraction part A branching section that mixes with the induced air drawn into the air conditioning duct and branches to a plurality of outlets ,
The attraction part comprises an attraction nozzle for ejecting the conditioned air, and an attraction guide for attracting air outside the air conditioning duct into the air conditioning duct by the ejection of the conditioned air,
An air conditioning facility characterized in that a shielding member for diffusing conditioned air flowing in the air conditioning duct is provided in the air conditioning duct between the flow rate adjusting means and the attraction nozzle . The attractant guide and the air conditioning equipment of claim 1, wherein providing the guide vane in the air conditioning duct between the branch portion. The air conditioning equipment according to claim 1 or 2 , wherein an air purifying means is provided in the air conditioning duct downstream of the attraction portion. The air conditioning equipment according to any one of claims 1 to 3 , wherein a heat insulating material is attached to outer surfaces of the attracting nozzle and the attracting guide.

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