JP2008070073A - Diffusion port device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a diffusion port device capable of generating efficiently an induced air current to enhance diffusion performance, by arranging properly guide vanes for generating a vortex flow, capable of exhibiting an air conditioning effect to the maximum, and capable of preventing surely dew from being condensed. <P>SOLUTION: The plurality of vanes 21 is arranged along each outer circumferential face of an inner cone 20 under the condition inclined at a prescribed angle from a sloped face descending direction on the each outer circumferential face, an advancing direction of an air current along the each outer circumferential face of the inner cone 20 is changed sidedly to a corner part, a transverse-directional velocity component is imparted to the each air current, to be conformed with each tangential direction of one circle, the air currents guided by the respective guide vanes are combined thereby to form surely the vortex flow, so as to be diffused uniformly toward an air conditioning objective space, an induced amount is made great and a diffusion range is widened to carry out efficiently air conditioning, and the vortex flow reaches a diffusion port outer circumferential end part, without generating omission, and the induced air current reaches from the periphery to the diffusion port outer circumferential end part to prevent a situation of bringing the dew condensation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an air outlet device arranged to face an air conditioning target space, and in particular, an air outlet that provides an appropriate air blowing state and faces an air flow even when the air-conditioning gas is extremely low temperature and its surroundings. It is related with the blower outlet apparatus which does not produce dew condensation in each part.

  In an air conditioning facility, a blowout device that blows conditioned air sent through a duct into an indoor space as an air conditioning target space is generally used to straighten an airflow of conditioned air in a blowing state fixed in one or more directions. In addition to the type, in order to improve the diffusion performance of airflow into the air conditioning target space, multiple airflow guides and other airflow guides are provided so that the direction of the multiple airflows matches the tangential direction of each circle. Some of them can also generate a swirl component by synthesizing each air flow and blow out as a swirl flow. An example of a conventional air outlet device that swirls and blows such an air current is disclosed in Japanese Utility Model Registration No. 2539498.

This conventional blower outlet device is provided with a plurality of swirl vanes at the neck portion to give swirl flow to the blown air. A ring-shaped attracting blow face is provided on the lower side with a predetermined gap. The conditioned air given the swirl flow attracts the room air from the gap between the blowing pan and the induction blowing face, and the conditioned air and the induced room air are sufficiently mixed and blown into the room. Occurrence of drafts can be reduced.
Utility Model Registration No. 2539498

  Among the conventional air outlet devices, the one shown in the above-mentioned patent document has a state in which conditioned air is blown out as a swirling flow by the swirling blades in the neck portion. Although better diffusion performance can be obtained by mixing with air, the swirling airflow generated at the neck part goes to the room through the space between the pan and the outer air outlet face. The blowout to the corner portion is weaker than the blowout to each side of the pan and the outer blowing face, and the air drawn from the room reaches and contacts the corner portion of the outer blowing face end portion. In other words, when the blowing temperature is very low, such as 10 ° C. or less, condensation is likely to occur due to the temperature difference between the cooled corner portion and the induced air, and the blowing temperature is set to 10 for the purpose of energy saving. The air conditioning method according to temperatures below there is a problem that can not be handled.

  In addition, it is conceivable that low-temperature air is blown out using a general straight-out blowout device that does not generate a swirl flow. However, because the temperature difference between the conditioned air and the indoor induction air is large, the conditioned air Each part of the air outlet that is cooled by the air also has a large temperature difference from the room air, and it is difficult to prevent dew condensation by a dew condensation prevention measure such as attaching a simple heat insulating cover to the surface of the air outlet apparatus. Correspondingly, if measures such as using a heater that keeps the parts of the air outlet device cool to prevent condensation, extra work and running costs are required, and the actual cost effectiveness is inferior. Had problems.

  The present invention has been made to solve the above-mentioned problems, and guide vanes that generate a swirl flow are arranged at appropriate locations to efficiently generate an induced air flow, improve diffusion performance, and maximize the air conditioning effect. An object of the present invention is to provide a blowout device that can be fully used and that can also reliably prevent the occurrence of condensation.

  An air outlet device according to the present invention is supplied with an air conditioning gas, and has an air outlet main body having an opening portion for directing the air conditioning gas toward a space to be air conditioned, and the air outlet main body. An air outlet apparatus provided with an airflow guiding means disposed in the substantially central portion of the opening and guiding the air-conditioning gas in a predetermined blowing direction, wherein the air-discharge outlet body is substantially hollow to which the air-conditioning gas is supplied. A box-shaped body having a rectangular or rectangular opening cross-sectional shape, and a substantially pyramid-shaped outer cone portion attached integrally to the opening end of the chamber portion on the air conditioning target space side. The air flow guide means is a substantially pyramid-shaped expanded middle cone having a predetermined interval from the inner periphery of the outer cone portion of the outlet body, and a plurality of substantially plate-like shapes on each outer circumferential surface of the middle cone. The guide vanes are installed upright. The guide blades are rotated by the same predetermined angle from the downward direction of the slope of the outer peripheral surface to the lateral direction, and the intermediate cone is at least the air The surface on the space to be harmonized is made of a heat insulating material.

  As described above, according to the present invention, a plurality of guide vanes are disposed on each outer peripheral surface of the middle cone so as to be inclined at a predetermined angle from the slope descending direction of each outer peripheral surface, and the air flow along each outer peripheral surface of the middle cone By changing the direction closer to the corner and giving each airflow a lateral velocity component that coincides with each tangential direction of one circle, the airflow guided by each guide vane is synthesized and a swirling flow is generated. The air flow guided to the inner cone is surely turned into a swirl flow and is uniformly blown out toward the air-conditioning target space, the amount of attraction from the lower side of the blowout port is increased, and this induced airflow and blown airflow The diffusion range of the mixed air flow can be maximized, air conditioning can be performed very efficiently, drafts in the living area can be made difficult to feel, and the swirling air flow can reach the outer peripheral edge of the outlet without leaking, Attracted from Flow can be prevented a situation that leads to condensation reaches the outlet peripheral edge. In addition, by disposing a heat insulating material on the lower side of the middle cone, even if the induced airflow reaches and contacts the lower surface of the middle cone with high attraction performance due to the swirling flow, it is possible to prevent condensation on the lower surface of the middle cone.

  Further, the air outlet device according to the present invention is a rectangular or rectangular substantially plate-like body having a size that covers the surface of the middle cone on the air conditioning target space side as necessary. It is provided with a cover that is disposed at a predetermined interval on the target space side and that is provided with at least a part of a hole that allows gas to reach from the air conditioning target space to the vicinity of the middle cone.

  As described above, according to the present invention, a cover with a hole is provided on the air conditioning target space side of the middle cone, and each hole of the cover allows an induced airflow to reach the gap between the middle cone and the cover. As a result, the induced airflow comes out from the gap between the middle cone and the cover and can be mixed with the blown airflow, and the amount of attraction can be secured sufficiently, while the air conditioning target space side of the middle cone is hidden by the cover and cannot be seen Therefore, even if the surface of the middle cone on the air conditioning target space side is exposed to the heat insulating material, the appearance of the middle cone is not impaired, and the middle cone can have a heat insulating performance and cost-oriented structure.

  Moreover, the blower outlet apparatus which concerns on this invention arrange | positions the auxiliary | assistant middle cone of a both-ends open state by the substantially pyramid-shaped expansion shape in the opening area | region between the said blower outlet main body and a middle cone as needed.

  As described above, according to the present invention, the secondary middle cone is disposed outside the middle cone, and most of the airflow passing through the opening region between the outlet main body and the middle cone passes through the inner portion of the middle middle cone. By reaching the cone, the airflow passing through the opening area becomes more susceptible to the influence of the guide vanes, strengthening the state where the blown airflow blows horizontally as a swirling airflow, mixing the blown airflow and the induced airflow and its Diffusion can be advanced more strongly, and the efficiency of air conditioning can be increased.

  In addition, the air outlet device according to the present invention obstructs the air flow of the air-conditioning gas from the air outlet of the air outlet body toward the center of the opening area by protruding a predetermined length from each inner peripheral surface of the chamber portion of the air outlet body as necessary. A board is provided.

  As described above, according to the present invention, the baffle plate is provided in a projecting manner on the inner periphery of the outlet body, and the air flow is unlikely to proceed to the outer cone portion of the opening region between the outer cone portion and the middle cone. By increasing the amount of airflow that flows near the middle cone part more than the part near the outer cone part, the airflow passing through the opening area becomes more susceptible to the influence of the guide vanes, and the blown airflow blows out horizontally as a swirling airflow By strengthening, the mixing and diffusion of the blown air flow and the induced air flow can be advanced more strongly, and the efficiency of air conditioning can be increased.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an air outlet apparatus according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic sectional view of the air outlet device according to the present embodiment, FIG. 2 is a bottom view of the air outlet device according to the present embodiment, and FIG. 3 is a view of the middle cone in the air outlet device according to the present embodiment. It is a top view.

  In each of the drawings, the air outlet device 1 according to the present embodiment includes an air outlet main body 10 having an opening portion for directing the supplied conditioned air for cooling toward the indoor space to be air conditioned, and the air outlet main body 10. The middle cone 20 as the airflow guide means for guiding the conditioned air in a predetermined blowing direction, and a cover which is integrally disposed below the middle cone 20 and covers the lower surface side of the middle cone 20 30 and a sub middle cone 40 disposed in an opening region between the air outlet main body 10 and the middle cone 20.

  The air outlet body 10 has a substantially rectangular pyramid-shaped expansion shape that is integrally attached to a chamber portion 11 that is a hollow, substantially box-shaped body and has a square opening cross-sectional shape, and a lower opening end that is the indoor space side in the chamber portion 11. The outer cone part 12 is provided, and the outer cone part 12 is disposed on the ceiling 50 with the indoor space side facing the indoor space, and the cylindrical neck part 13 provided in the chamber part 11 is connected to the duct 51 in the ceiling 50. It is. The blower outlet body 10 is configured to blow out the conditioned air for cooling as the air-conditioning gas supplied from the duct 51 from the indoor space side opening of the outer cone portion 12 to the indoor space.

  In the chamber portion 11 of the outlet body 10, baffle plates 14 whose surfaces are subjected to sound absorption processing such as flocking as needed protrude from the inner peripheral surfaces of the chamber portion 11 toward the center of the opening region. It is the structure arrange | positioned by arrangement | positioning. These baffle plates 14 deflect the flow of conditioned air supplied into the chamber portion 11 toward the center of the opening region, and the outer cone portion in the opening region between the outer cone portion 12 and the middle cone 20. This is a mechanism that makes it difficult for the airflow to travel to the close part, and increases the amount of airflow flowing through the intermediate cone part more than the outer cone part part.

  The middle cone 20 is formed in a substantially pyramid-shaped expanded shape having a predetermined interval with the inner periphery of the outer cone portion 12 of the outlet body 10, and a plurality of substantially plate-shaped guide vanes 21 are arranged in a standing state on each outer peripheral surface. On the other hand, the lower surface on the indoor space side is covered with the sheet-like heat insulating material 22, the expansion side is positioned closer to the indoor space, and the lower end position is positioned above the lower end of the outlet body 10. The structure is fixed to the support frame 15 of the outlet body 10 and disposed in the center of the opening area of the outlet body 2. The guide vanes 21 have a configuration in which the orientation of the middle cone 20 on each outer peripheral surface is rotated by the same predetermined angle from the slope downward direction of each outer peripheral surface to the lateral direction.

  The cover 30 is a rectangular plate-shaped decorative member having a size that covers the lower surface of the middle cone 20 on the indoor space side. The cover 30 is arranged at a predetermined distance from the middle cone 20 on the indoor space side. In this configuration, a large number of holes 31 are formed in a grid shape at the center so as to allow the air to reach the attracting room air from the indoor space side to the vicinity of the middle cone 20. By allowing the induced air to flow into the gap portion between the middle cone 20 and the cover 30 from the hole 31 and allowing the induced air to flow through the gap, the induced air is reliably supplied to the blown airflow around the middle cone 20. While being mixed and blowing out together, the heat insulating material 22 under the middle cone 20 is difficult to see from the indoor side to improve the beauty. Note that the cover 30 is connected and supported in a state in which heat conduction is difficult to occur with respect to the middle cone 20, so that there is almost no temperature decrease that leads to the occurrence of condensation.

  The secondary middle cone 40 has a substantially pyramid-shaped expanded shape larger than the middle cone 20, and is open at both ends unlike the middle cone 20, and is fixed to the support frame 15 of the blower outlet body 10 to be blown outlet body. 10 and the middle cone 20 are arranged in the opening region. The auxiliary middle cone 40 also has a role of making it difficult to see the guide vanes 21 on the middle cone 20 from the indoor space side.

  Next, the air flow blowing state in the blower outlet apparatus based on the said structure is demonstrated. The low-temperature conditioned air for cooling sent from the duct 51 travels downward in the outlet body 10, but has a course toward the center of the opening region by the baffle plate 14 protruding from the inner periphery of the chamber portion 11 of the outlet body 10. Will be deflected. The conditioned air flow enters the regions between the outlet body 10 and the sub middle cone 40 and between the sub middle cone 40 and the middle cone 20. Most of the conditioned air flow (60% to 90%) deflected by the baffle plate 14 proceeds to a region between the secondary middle cone 40 and the middle cone 20 and travels indoors along the surface of the middle cone 20. It will be.

  The air flow of the conditioned air that has reached the surface of the middle cone 20 is a plurality of guide vanes 21 that are arranged in a state inclined at a predetermined angle from the slope descending direction of each outer peripheral surface of the middle cone 20, and the traveling direction of the guide vanes 21 Lateral velocity components corresponding to the tangential directions of the same circle are respectively generated in the airflow along the outer peripheral surfaces. And each airflow which advanced along each outer peripheral surface of the middle cone 20 leaves the area | region between the middle cone 20 and the sub middle cone 40, and a horizontal velocity component is each synthesize | combined and a swirl flow arises. This swirling flow generates a strong attractive force, and the indoor air below the cover 30 is attracted and enters the gap between the middle cone 20 and the cover 30 from the hole 31. In addition, since the lower surface of the middle cone 20 is covered with the heat insulating material 22, condensation does not occur due to contact with the attracted warm indoor air.

  Attracted air from the gap between the middle cone 20 and the cover 30 is first mixed with the swirling conditioned air stream. At the same time, it mixes with a part of the conditioned air stream that has advanced to the region between the outlet body 10 and the sub-cone 40. The mixed airflow is blown horizontally into the indoor space from the opening between the outer cone portion 12 and the cover 30 while turning as it is. The swirling airflow that is blown out is powerfully attracting room air in the vicinity of the air outlet, and further progresses and diffuses while continuing to mix, thereby efficiently and uniformly lowering the temperature of the indoor space. It becomes.

  Since a swirling flow is generated by synthesizing the airflow guided by the guide vanes 21 on the middle cone 20, the airflow is surely blown out as a swirling flow toward the indoor space without weakening the swirlability. The amount of air attracted from the indoor space below the air outlet can be increased, and the swirling airflow can reach the outer peripheral edge of the air outlet, including the corner of the outer cone 12 without any leakage. It is possible to prevent the airflow from coming into contact with the outer peripheral end of the outlet and prevent condensation.

  In addition, the mixing of the conditioned air and the induced air occurs in a plurality of stages, so that the temperature difference between the blown airflow and the room air can be quickly reduced along with the diffusion of the airflow, and the low-temperature conditioned air of 10 ° C. or less can be blown. Even when putting out, it is possible to make it difficult to feel the draft in the residential area.

  As described above, in the air outlet device according to the present embodiment, the plurality of guide vanes 21 are arranged on each outer peripheral surface of the middle cone 20 so as to be inclined at a predetermined angle from the slope downward direction of each outer peripheral surface. 20 The airflow guided by each guide vane 21 is obtained by changing the traveling direction of the airflow along each outer peripheral surface closer to the corner portion and giving each airflow a lateral velocity component corresponding to each tangential direction of one circle. As a result, a swirling flow is generated, and the airflow guided to the middle cone 20 is reliably swirling and is uniformly blown out toward the indoor space. The diffusion range of the mixed airflow of the induced airflow and the blown airflow can be maximized and the air conditioning can be performed extremely efficiently, and the draft in the living area can be made difficult to feel.

  In the air outlet device according to the embodiment, the heat insulation performance is obtained by disposing the sheet-like heat insulating material 22 on the indoor space side surface as the air conditioning target space in the middle cone 20, and in this portion Although it is configured to prevent condensation, the present invention is not limited to this, and the entire middle cone may be made of a heat insulating material to prevent a temperature decrease on the surface of the air-conditioning target space and prevent condensation.

  Further, in the air outlet device according to the above-described embodiment, the baffle plate 14 and the sub middle cone 40 that adjust the progress of the air flow are disposed in order to reliably guide the conditioned air to the guide vanes 21 on the middle cone 20. However, the present invention is not limited to this, and when the airflow can be sufficiently guided to the middle cone 20 by adjusting the size and shape of the outlet body 10 itself, the baffle plate 14 and / or the auxiliary middle cone 40 is provided. The structure as the blowout device can be simplified and the cost can be reduced.

It is a schematic structure sectional view of the blower outlet concerning one embodiment of the present invention. It is a bottom view of the blower outlet device concerning one embodiment of the present invention. It is a top view of the middle cone in the blower outlet apparatus concerning one embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air outlet apparatus 10 Air outlet main body 11 Chamber part 12 Outer cone part 13 Neck part 14 Baffle plate 15 Support frame 20 Medium cone 21 Guide vane 22 Heat insulating material 30 Cover 31 Hole 40 Secondary middle cone 50 Ceiling 51 Duct

Claims (4)

An air-conditioning gas is supplied and an air outlet body having an opening for directing the air-conditioning gas toward a space to be air-conditioned, and the air outlet main body is disposed substantially at the center of the opening. In the air outlet device comprising the air flow guiding means for guiding the air-conditioning gas in a predetermined blowing direction,
The air outlet body is integrally formed with a chamber portion having a rectangular or square opening cross-sectional shape with a hollow substantially box-like body to which the air-conditioning gas is supplied, and an opening end of the chamber portion on the air-conditioning target space side. It has an outer cone part of a substantially pyramid-shaped expanded shape to be attached,
The airflow guide means is a substantially pyramid-shaped expanded middle cone having a predetermined interval from the inner periphery of the outer cone portion of the outlet body, and a plurality of substantially plate-shaped guides on each outer circumferential surface of the middle cone. The blades are arranged in a standing state,
The direction of the guide blades rotated on the respective outer peripheral surfaces of the middle cone by the same predetermined angle from the slope downward direction of each outer peripheral surface to the lateral direction,
The air outlet device characterized in that the middle cone is made of a heat insulating material at least on the air conditioning target space side surface. In the blower outlet device according to claim 1,
A rectangular or rectangular substantially plate-like body that covers the surface of the middle cone on the air-conditioning target space side is disposed in an arrangement with a predetermined interval on the air-conditioning target space side with respect to the middle cone. An air outlet device comprising: a cover having at least a part of a hole that allows gas to reach the vicinity of the cone from the air conditioning target space side. In the blower outlet device according to claim 1 or 2,
A secondary outlet cone having a substantially pyramid-like open shape and having both ends opened in an opening region between the outlet main body and the middle cone. In the blower outlet device according to any one of claims 1 to 3,
A blower outlet device comprising a baffle plate that protrudes a predetermined length from each inner peripheral surface of the chamber part of the blower outlet body and deflects the airflow of the air conditioning gas toward the center of the opening region of the blower outlet body.

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