KR19990002312A - Air supply system of floor ejecting air conditioning system - Google Patents

Abstract

The present invention relates to an air supply device of an Under Floor Air-conditioning (UFAC) system for ejecting air from the floor into the room.

The air supply device of the floor ejection air conditioning system according to an embodiment of the present invention is formed at an angle to be inclined at a predetermined angle (θ) so as to supply the air, which is disposed on the floor of the room, to the room at a certain angle of swirl flow, An air supply means in which a mechanism and a short air supply are alternately installed, a guide means for guiding the swirl flow discharged through the air supply means in a vertical direction, and an upper portion of the air supply means if the air conditioner is not discharged for a long time indoors It is characterized in that the cover is provided in the recess formed in the center of the plate to prevent the introduction of foreign matter through the short air supply and the long air supply formed in the air supply means.

Description

Air supply system of floor ejecting air conditioning system

The present invention relates to an air supply device of an Under Floor Air-conditioning (UFAC) system for ejecting air from the floor into the room.

In general, the Under Floor Air-conditioning (UFAC) system is to eject the air from the floor air-conditioned in the air conditioner, unlike the conventional ceiling air conditioning. Therefore, the floor spray air conditioning system can handle local loads around the occupants and the working environment, so it is advantageous not only in terms of thermal efficiency but also in terms of control, and can concentrate intensively in the living area. Or it is higher than other air-conditioning systems which eject air-conditioning air from the side wall of the room.

In particular, the floor ejection air conditioning system can reduce unnecessary heat load and requires low air conditioning power, making it suitable for air conditioning of large halls, theatres, and churches with high ceiling heights, and is very effective for energy saving. to be. In addition, it is expected to be applied to new buildings such as large halls, theaters, and churches with high ceilings because it has excellent responsiveness to changes in indoor structure and load characteristics.

However, the air supply system of the floor ejection air conditioning system for ejecting the air conditioning treated by hot or cold air into the room has a function of delivering the air conditioning treated to a desired place at a predetermined speed and swirl flow strength. The air supply device should be designed so that the air supply of the air supply device can maintain the flow toward the exhaust port while the air circulated from the air supply means surrounds the occupant in the form of a swirl stream.

In particular, since the air supply system of the floor ejection air conditioning system is installed on the floor, it must be designed so that impurities do not enter the air supply and the air supply is not obstructed. Although the air being blown out more in contact with the occupants, it is advantageous in terms of the efficiency of the heat source equipment. However, since the air conditioning directly reaches the indoor living area without the buffer zone, the air speed is sufficiently increased so that the occupants do not feel uncomfortable by the draft of the air conditioning. It should be reduced (typically less than 0.15 m / s) to reach the living quarters.

In addition, the air supply system of the floor ejection air conditioning system should be firmly manufactured to support a certain load, and the width of the air supply should be made less than 7mm to prevent the high heels or other small objects of women shoes from falling out. .

If the air supply temperature of the air conditioner and the room temperature are different, different blocks are formed by the temperature difference, and thus the air flow shows different characteristics according to the temperature difference. That is, in the bottom blowing air conditioning system, it is preferable to eject the air-conditioned air as close to the vertical as possible due to the flow characteristic of the cold air toward the bottom when cooling, and wider to the surroundings due to the flow characteristic of the hot air to the top when heating. Since it is desirable to diffuse, it is desired to develop an air supply system for a floor ejection air conditioning system in which the airflow dispersion angle is adjusted according to a cooling and heating method.

In the description of the present invention, the swirl flow refers to the flow of air conditioning air generated when the air passage of the air inlet formed in the air supply means is inclined, and the swirl flow attracts the surrounding air. It has the property of spreading the airflow distribution over a wide area. And, the number of revolutions representing the strength of the swirl flow means the ratio of the tangential momentum flux to the axial momentum flux.

The present invention has been made in view of the above various conditions, and an object of the present invention is to control the intensity of the air conditioning air sprayed through the air outlet, and at the same time, to control the diffusion angle of the air conditioning air is sprayed bottom air conditioning system To provide a supply of air.

It is another object of the present invention to provide an air supply system of a floor jet air conditioning system that can easily adjust the room temperature according to heating or heating.

Still another object of the present invention is to provide an air supply device of a floor ejecting air conditioning system that can improve energy efficiency and also maintain indoor air conditioning comfortably.

In order to achieve the above object, the air supply system of the floor ejection air conditioning system according to an embodiment of the present invention is inclined at a predetermined angle (θ) so as to supply air with air at a predetermined angle to the room by being disposed on the floor of the indoor air. At the same time, the air supply means in which the long air supply and the short air supply are alternately installed, the guide means for guiding the swirl flow discharged through the air supply means in the vertical direction, and the air conditioner do not discharge the air for a long time. In this case, it is inserted into a concave groove formed in the center of the upper plate of the air supply means, characterized in that it has a cover for preventing the introduction of foreign matter through the short air supply and the long air supply formed in the air supply means.

1 is a plan view schematically showing the air-conditioning air supply means of the bottom ejection air conditioning system applied to an embodiment of the present invention.

Figure 2 is a perspective view schematically showing the air conditioning air supply means of the floor jet air conditioning system applied to an embodiment of the present invention.

Figure 3 is a plan view schematically showing a guide means for guiding the air-conditioning air is ejected by supporting the air-conditioning air supply division of the floor jet air-conditioning system applied to an embodiment of the present invention.

4 is a cross-sectional view taken along the arrow IV-IV of FIG.

Figure 5 is a perspective view of the air supply apparatus of the floor jet air conditioning system according to an embodiment of the present invention.

Figure 6 is a longitudinal cross-sectional view of the air supply apparatus of the floor jet air conditioning system according to an embodiment of the present invention.

7 is a view illustrating air field velocity field characteristics (dotted line) ejected from the air supply device of the floor ejection air conditioning system according to an embodiment of the present invention and speed field characteristics (solid line) in a state where the vertical through hole of the guide means is closed. It is a figure.

* Description of the symbols for the main parts of the drawings *

10: supply means 12: long air supply

14: Short air supply 16: Top plate

16a: recessed groove 18: bottom plate

20: guide means 22: through hole

24: flange 26: cylindrical body

26a: vertical through hole 28: annular outer flange portion

30: cover 30a: projection

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view schematically showing the air-conditioning air supply means of the bottom ejection air conditioning system applied to an embodiment of the present invention, Figure 2 is an air conditioning air supply means of the bottom ejection air conditioning system applied to an embodiment of the present invention 3 is a perspective view schematically illustrating a guide means for guiding the air conditioning air that is ejected by supporting the air conditioning air supply means of the floor spray air conditioning system according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along arrow IV-IV of FIG. 3, FIG. 5 is a perspective view of an air supply apparatus of the floor jet air conditioning system according to an embodiment of the present invention, and FIG. 6 is a floor jet according to an embodiment of the present invention. This is a longitudinal cross-sectional view of the air supply system of the air conditioning system.

As shown in Figures 1 to 6, the air supply apparatus of the floor ejection air conditioning system according to an embodiment of the present invention is disposed on the floor of the room at a certain angle to supply the air at a certain angle to the room air conditioned (0) is formed to be inclined at the same time, the air supply means 10, the long air supply mechanism 12 and the short air supply mechanism 14 are installed alternately, and the swirl flow discharged through the air supply means 10 in the vertical direction The guide means 20 for guiding to the air and the air supply means is inserted into the concave groove 16a formed in the center of the upper plate 16 of the air supply means 10 when the air conditioning air is not discharged for a long time. The cover 30 which has the projection part 30a is provided in order to prevent the introduction of a foreign material through the air supply holes 12 and 14 formed in the 10.

As shown in detail in FIGS. 1 and 2, the air supply means 10 is formed to be inclined at 20 ° to 80 ° with respect to the vertical direction so as to discharge air-conditioned air while being turned at an angle of 22.50 ° to each other. 16 long elongated air inlets 12 and short elongated air inlets 14 formed in parallel to the elongated air inlets 12 so as to discharge air-conditioned air while being turned, respectively, and disposed between the elongated air inlets 12. ), Upper and lower plates 16 and 18 for supporting the long and short air supply holes 12 and 14 at the upper and lower portions, respectively, and protrusions protruding from the lower center of the cover 30 to prevent the cover from being separated. The recessed groove 16a formed so that 30a may be inserted is provided.

The guide means 20 has a through hole 22 formed so that the air supply means 10 is inserted and disposed at the center thereof, and from the lower portion of the through hole 22 toward the inside to support the air supply means 10 from below. The inner flange portion 24 protruding in an annular shape, and the air flow through the long supply port 12 and the short supply port 12, 14 of the air supply means 10 by discharging the air is vertically A cylindrical body 26 having a plurality of vertical through holes 26a formed to guide upwardly, and an annular outer flange portion 28 extending radially from the cylindrical body 26 and abutted on a floor (indoor floor) upper surface; ).

Next, the operation and effect of the air supply device of the floor jet air conditioning system according to the present invention configured as described above will be described with reference to FIG.

FIG. 7 is a view for explaining the air field velocity field characteristic (dashed line) ejected from the air supply device of the floor ejection air conditioning system according to an embodiment of the present invention and the velocity field characteristic (solid line) in a state where the guide means is removed.

In Fig. 7, when the flow velocity of air air-conditioned with cold air is 79.8 m ³ / h, the x-axis is the distance at which cold air is diffused from the center of the air supply means 10, and the y-axis is the height at which the cold air is raised from the bottom. The graph of FIG. 7 is a value obtained by measuring the diffusion distance (diffusion distance in the radial direction from the center of the air supply means 10) of the air-conditioning air discharged through the air supply means 10 only under the conditions shown in Table 1. The dotted line graph is a value obtained by measuring the diffusion distance (diffusion distance in the radial direction from the center of the air supply means 10) of the air-conditioning air discharged through the air supply means 10 and the guide means 2.

TABLE 1

t-1

In Table 1, b ₁ is the width of the long air supply 12, L ₁ is the length of the long air supply 12, d _i1 is between the inner end of the long air supply 12 from the origin of the air supply means (10) Double distance, b ₂ is the width of the short air supply 14, L ₂ is the length of the short air supply 14, d _i2 is the center of the air supply means 10 and the inner end of the short air supply 14 and 2 times between, b ₃ is the width of the vertical through hole 26a of the guide means 20, L ₃ is the length of the vertical through hole 26a formed in the cylindrical body 26 of the guide means 20, d _eq is the equivalent diameter calculated by the opening, the opening ratio (%) is the ratio of the total area of the long supply port 12 and the short supply port 14 to the total area of the air supply means 10, the number of turns (S) The ratio of the tangential momentum to the axial momentum.

First, in the passage (or floor duct) in which the air conditioning air is supplied to the indoor floor, the air supply device of the floor ejection air conditioning system according to an embodiment of the present invention is installed flat with respect to the floor, and then the passage (or floor duct). When the air-conditioning air of cold wind is supplied, the long air supply unit 12 and the short air supply unit 14 of the air supply unit 10 are inclined at 20 ° to 80 ° with respect to the vertical direction so as to discharge the air-conditioned air while turning. Since it is formed, the cold air discharged from the long air supply unit 12 and the short air supply unit 14 of the air supply means 10 rises upward while forming a swirl flow, and at the same time, the cylindrical body 26 of the guide means 20. The cold air discharged through the plurality of vertical through holes 26a formed in the N) rises upward while guiding the cold air discharged from the long air supply 12 and the short air supply 14 from being spread.

Therefore, in the air supply system of the bottom ejection air conditioning system according to an embodiment of the present invention, the air volume control ratio ejected from the center portion of the air conditioning air of the cold wind ejected from the air supply means 10 and the vertical through hole 26a of the guide means 20. (This ratio is the number or size of the long air supply 12 and the short air supply 14 of the air supply means 10 the number of vertical through holes 26a formed in the cylindrical body 26 of the guide means 20. Or it can be adjusted by the ratio of the size) it is possible to adjust the swirl flow intensity and diffusion angle, it is possible to adjust the swirl flow intensity and diffusion strength of the air conditioning air.

On the other hand, in the case of discharging the warm air using the air supply system of the bottom ejection air conditioning system according to an embodiment of the present invention, the vertical through-hole 26a of the guide means 20 is an injection of synthetic resin or artificial rubber or natural rubber, etc. When closed by the sealing member manufactured by the air conditioner, the warm air discharged from the air supply means 10 may rise while spreading widely as indicated by the solid line in FIG. 7, and may warmly air over a large area of the room.

In the above description, the shapes of the air supply means 10 and the guide means 20 are manufactured as an example, but the present invention is not limited thereto, and the present invention may be formed in a triangle, a rectangle, or a polygon. Of course.

In addition, in the above description, when the cooling and heating air conditioning is unnecessary for a long time, the air supply means 10 to prevent the foreign matter is introduced through the air supply mechanisms 12, 14 formed in the air supply means 10. The protrusion 30a is formed at the center of the cover 30 so that the cover 30 which covers the cover 30 is not separated from the upper plate 16 of the air supply means 10, and the cover is formed at the center of the upper plate 16. For example, the concave grooves 16a are formed to be inserted into the protrusions 30a of the 30, but the present invention is not limited thereto. For example, concave grooves are formed in the center of the cover 30. In the present invention, the protrusion 30 is formed at the center of the upper plate 16 so that the protrusion of the cover 30 is inserted into the concave groove of the cover 30 so that the cover 30 is placed on the upper plate 16. Of course, the concept is included.

In addition, in the above description, in order to prevent the cover 30 from flowing in the upper plate 16 of the air supply means 10, a protrusion is formed on the lower surface of the cover 30, and the upper plate ( 16 to form a concave groove coupled to the protrusion or to form a concave groove on the cover 30 as opposed to the above, and to form a projection coupled to the concave groove formed in the cover 30 on the upper plate 16 Of course, included in the concept of the present invention.

As described above, according to the air supply system of the floor ejection air conditioning system according to an embodiment of the present invention, the air is disposed on the floor of the room so as to be inclined at a predetermined angle (θ) to supply air at a certain angle to the room at a certain angle of swirl flow. At the same time, the air supply means in which the long air supply and the short air supply are alternately installed, the guide means for guiding the swirl flow discharged through the air supply means in the vertical direction, and the air conditioner do not discharge the air for a long time. In this case, since the cover 30 is inserted into the concave groove formed in the center of the upper plate of the air supply means and prevents the introduction of foreign matter through the short air supply port and the long air supply port, the swirl flow intensity And the angle of diffusion can be adjusted so that the strength of the swirl flow when heating the airflow and temperature distribution in response to changes in room temperature conditions The air diffusion and temperature distribution can be distributed widely in the room by increasing the diffusion angle, and when cooling, it can change the room temperature low by taking the swirl flow intensity and diffusion angle small. Since the temperature can be easily adjusted, the energy efficiency can be improved, and there is a very excellent effect of keeping the indoor air conditioning comfortable.

Claims (3)

An air supply means provided at an angle to be inclined at a predetermined angle (θ) so as to supply air conditioned at the bottom of the room at an angle of swirl flow toward the room, and an air supply means alternately provided with a long air supply and a short air supply; Guide means for guiding the swirl flow discharged through the air supply means in a vertical direction, and when the air conditioner does not discharge the air for a long time, it is inserted into a concave groove formed in the center of the upper plate of the air supply means, An air supply system for a floor ejection air conditioning system, comprising a cover 30 for preventing the introduction of foreign matter through the formed short air supply and the long air supply. The air supply unit of claim 1, wherein the air supply unit is formed to be inclined at 20 ° to 80 ° with respect to the vertical direction to discharge the air while turning the air, and a plurality of long air supply units formed at an angle of 22.50 ° to each other. Upper and lower plates which are formed in parallel with the elongated air supply port so as to discharge air while turning, the short air supply port respectively disposed between the long air supply ports, and the upper and lower plates respectively supporting the long air supply and the short air supply upper and lower portions, respectively. And a concave groove formed to insert a protruding portion protruding from the lower center of the cover to prevent the cover from being separated. According to claim 1, The guide means has a through hole formed so that the supply means is inserted and disposed in the center, and the inner flange portion protruding annularly inward from the bottom of the through hole to support the gig means from the bottom And a cylindrical body having a plurality of vertical through-holes formed therein so as to vertically discharge the air-conditioned air to guide the swirl flow supplied through the outer and inner air supply ports of the air supply means upwardly, and extending radially from the cylindrical body. (Indoor floor) An air supply system for a floor jet air conditioning system, comprising an annular outer flange portion which is abutted on an upper surface.