JP2018009732A - Chamber duct for air conditioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamber duct for air conditioning, capable of suppressing dispersion of a flow rate of mixed air blown out from blowout ports.SOLUTION: A chamber duct 10 for air conditioning includes a duct 12 closed at a longitudinal end portion, an introduction port 14 formed on a side face 12A of the duct 12 to introduce conditioned air into the duct 12, spacial portions respective configured between the introduction port 14 and a ceiling face 12B of the duct 12 and between the introduction port 14 and a bottom face 12C of the duct 12, and having a height of 1/2 times or more of a height of the introduction port 14, an outside air intake port 20 formed on a side face 12D opposed to the side face 12A having the introduction port 14 of the duct 12 to take the outside air into the duct 12, and blowout ports 26, 28 formed on the side faces 12A, 12D of the duct 12 at positions separating from the introduction port 14 for blowing out the mixed air obtained by mixing the conditioned air and the outside air, in the duct 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning chamber duct that mixes conditioned air and outside air.

  As an air conditioning chamber duct that mixes conditioned air and outside air and supplies them to the outside, for example, Patent Document 1 discloses an inlet-side opening to which a supply duct for supplying conditioned air is connected, a delivery duct, and a mixing duct An air conditioning chamber is disclosed that includes a chamber body having a branch opening to which an air duct is connected.

JP 2003-4285 A

  In the air conditioning chamber as disclosed in Patent Document 1, the conditioned air flowing into the chamber body from the inlet side opening is first opposed to the side surface where the inlet side opening of the chamber body is formed. Hit the side. Thereafter, the mixed air in which the conditioned air and the mixing air are mixed flows to the branch opening.

  For this reason, the amount of mixed air flowing out from the branch opening provided in the vicinity of the opposite side surface tends to be larger than the amount of mixed air flowing out from the branch opening provided in the vicinity of the inlet side opening. .

  In view of the above facts, an object of the present invention is to provide an air conditioning chamber duct capable of suppressing variations in the flow rate of mixed air blown from a blower outlet.

  The air conditioning chamber duct according to claim 1 is a duct having a closed end in a longitudinal direction, an inlet formed on a side surface of the duct, for introducing conditioned air into the duct, the inlet, and the duct. A space formed between the ceiling surface and between the introduction port and the bottom surface of the duct, the height of which is at least half the height of the introduction port, and the duct Formed on the ceiling surface, the bottom surface, or a side surface opposite to the side surface on which the introduction port is formed, an outside air intake port for taking outside air into the duct, and a position away from the introduction port on the side surface of the duct An air outlet that blows out the mixed air in the duct formed and mixed with the conditioned air and the outside air.

  According to the above configuration, the space portions whose height is ½ times or more the height of the introduction port between the introduction port and the ceiling surface of the duct and between the introduction port and the bottom surface of the duct, respectively. Is formed. As a result, the conditioned air introduced from the introduction port vortexes in the space above and below the introduction port, mixes with the outside air taken in from the outside air intake port, and flows in the longitudinal direction of the duct.

  In this manner, the conditioned air swirls in the space above and below the inlet, thereby reducing the variation in the dynamic pressure in the longitudinal direction of the duct of the mixed air mixed with the outside air, and the mixed air blown out from the outlet The variation in the flow rate is suppressed.

  The air conditioning chamber duct according to claim 2 is the air conditioning chamber duct according to claim 1, wherein the outside air intake port is formed on a side surface of the duct facing the side surface on which the introduction port is formed. A wind direction plate is provided between the outside air intake and the introduction port to change the inflow direction of outside air taken in from the outside air intake.

  According to the above configuration, the wind direction plate is provided between the outside air intake and the inlet that face each other. For this reason, it can suppress that external air and air-conditioning air collide directly, and ventilation resistance can be made small.

  The air conditioning chamber duct according to claim 3 is the air conditioning chamber duct according to claim 1 or 2, wherein the first air outlet formed on the side surface of the duct where the introduction port is formed is It is separated from the inlet along the longitudinal direction of the duct from the second outlet formed on the side facing the side where the inlet of the duct is formed.

  Generally, the mixing rate of the mixed air decreases near the inlet on the side surface where the duct inlet is formed. Here, according to the said structure, the 1st blower outlet formed in the side surface in which the inlet of the duct was formed is more than the 2nd blower outlet formed in the side facing the side in which the duct inlet was formed. It is away from the inlet along the longitudinal direction of the duct. For this reason, the mixing rate of the mixed air blown out from the first blower outlet and the second blower outlet can be made uniform.

  ADVANTAGE OF THE INVENTION According to this invention, the chamber duct for an air conditioning which can suppress the dispersion | variation in the flow volume of the mixed air which blows off from a blower outlet can be provided.

(A) is a top view which shows the chamber duct for an air conditioning in an example of embodiment of this invention, (B) is the front view. (A) is the sectional view on the AA line in FIG.1 (B) which shows the flow of the air in the chamber duct for an air conditioning, (B) is the BB sectional drawing in the FIG.1 (B).

  Hereinafter, an air-conditioning chamber duct according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the present invention, the “chamber duct” is a member that has both the function of a chamber in which the taken-in air is mixed and the function of a duct that sends air to the outlet.

(Constitution)
As shown in FIG. 1, the air-conditioning chamber duct 10 of the present embodiment has a rectangular tube-shaped duct 12 having a length of, for example, about 3500 mm and closed at both ends in the longitudinal direction.

  The duct 12 is made of corrugated cardboard having an aluminum foil attached to the surface by lamination, and has a vertically long cross section whose height (for example, 400 mm) is larger than the width (for example, 300 mm).

  Further, a rectangular introduction port 14 is formed at a substantially central portion in the longitudinal direction of the side surface 12 </ b> A of the duct 12, and one end of a rectangular tube-like introduction duct 16 is connected to the introduction port 14. The other end of the introduction duct 16 is connected to an air conditioner (not shown).

  As shown in FIG. 2A, the introduction port 14 is formed at a substantially central portion in the height direction of the side surface 12A of the duct 12, and the height D (for example, 200 mm) of the introduction port 14 is the height of the duct 12. It is set to 1/2 times the length.

  For this reason, the height E (for example, 100 mm) is 1 of the height D of the inlet 14 between the inlet 14 and the ceiling surface 12B of the duct 12 and between the inlet 14 and the bottom surface 12C of the duct 12. Space portions 18 each having a size of 2 are formed.

  As shown in FIG. 1, a circular outside air inlet 20 is formed at a substantially central portion in the longitudinal direction of the side surface 12D facing the side surface 12A where the inlet 14 of the duct 12 is formed. One end of a cylindrical intake duct 22 is connected to the inlet 20. The other end of the intake duct 22 is released to the atmosphere via a device such as a blower (not shown).

  A wind direction plate 24 is provided between the introduction port 14 and the outside air intake port 20, that is, at a substantially central portion in the longitudinal direction in the duct 12. The wind direction plate 24 is a plate-like member disposed along the longitudinal direction of the duct 12, and the upper end and the lower end are respectively fixed to the ceiling surface 12 </ b> B and the bottom surface 12 </ b> C of the duct 12.

  The width of the wind direction plate 24 (the length along the longitudinal direction of the duct 12) is larger than the diameter (for example, 200 mm) of the outside air intake port 20 and smaller than the width (for example, 1000 mm) of the inlet port 14, for example, about 300 mm. It is said that.

  As shown in FIG. 2 (B), in the central portion in the longitudinal direction of the duct 12, the space portion 18 in the duct 12 is separated from the inlet-side space portion 18A by the wind direction plate 24 at the substantially central portion in the width direction. It is partitioned into the inlet side space 18B.

  A plurality of (two in this embodiment) first air outlets 26 are formed on the side surface 12A of the duct 12 where the inlet 14 is formed. On the other hand, a plurality of (six in this embodiment) second air outlets 28 are formed on the side surface 12D of the duct 12 where the outside air intake port 20 is formed.

  The 1st blower outlet 26 and the 2nd blower outlet 28 are made into the circular shape whose diameter is about 150 mm, for example, and are formed in the position away from the inlet 14 at intervals, respectively. Further, one ends of cylindrical supply ducts 30 and 32 are connected to the first outlet 26 and the second outlet 28, respectively. The other ends of the supply ducts 30 and 32 extend to air conditioning areas (not shown) to which mixed air is supplied.

  Here, the first outlet 26 is separated from the inlet 14 along the longitudinal direction of the duct 12 from the second outlet 28. That is, the distance G (for example, 950 mm) between the first outlet 26 and the inlet 14 closest to the inlet 14 is the distance F between the second outlet 28 and the inlet 14 closest to the inlet 14. (For example, 450 mm).

(Function, effect)
Air conditioned air whose temperature and humidity are adjusted by an air conditioner (not shown) is introduced into the duct 12 through the introduction duct 16 and the introduction port 14.

  Here, as indicated by a solid line in FIG. 2 (A), the conditioned air introduced into the duct 12 from the inlet 14 collides with the opposite side surface 12D and is formed in the upper and lower portions of the duct 12. And then flows in the longitudinal direction of the duct 12.

  2B, at the position where the wind direction plate 24 is provided, the conditioned air introduced into the duct 12 from the introduction port 14 hits the wind direction plate 24 and is located above the duct 12. Then, a vortex is wound in the inlet side space 18 </ b> A formed in the lower part, and then flows in the longitudinal direction of the duct 12.

  On the other hand, outside air is taken into the duct 12 through the intake duct 22 and the outside air intake port 20. Here, as indicated by a solid line in FIG. 2B, the outside air taken into the duct 12 from the outside air inlet 20 is the outside air inlet side space 18B formed in the upper part and the lower part of the duct 12. And then flows in the longitudinal direction of the duct 12.

  The conditioned air and the outside air are mixed while flowing in the longitudinal direction of the duct 12 and become mixed air and are blown out from the first outlet 26 and the second outlet 28. The mixed air blown out from the first blower outlet 26 and the second blower outlet 28 is supplied to air conditioning areas (not shown) through the supply ducts 30 and 32.

  According to the present embodiment, the space portions 18 each having a height E that is ½ times the height D of the introduction port 14 are formed between the introduction port 14 and the ceiling surface 12B and the bottom surface 12C of the duct 12. Has been. For this reason, the conditioned air introduced into the duct 12 from the introduction port 14 vortexes in the space 18 above and below the introduction port 14, and the variation in the dynamic pressure of the conditioned air in the longitudinal direction of the duct 12 is reduced.

  Further, according to the present embodiment, the wind direction plate 24 is provided between the introduction port 14 and the outside air intake port 20. For this reason, it can suppress that the air-conditioning air introduce | transduced from the inlet 14 and the external air taken in from the external air inlet 20 directly collide, and can reduce blowing resistance.

  Further, after the conditioned air introduced from the introduction port 14 and the outside air taken in from the outside air intake port 20 are swirled in the introduction side space portion 18A and the outside air intake side space portion 18B, respectively, Mixed while flowing in the longitudinal direction. For this reason, while being able to aim at the uniformization of the mixing rate of conditioned air and external air, the dispersion | variation in the flow volume of the mixed air which blows off from the 1st blower outlet 26 and the 2nd blower outlet 28 can be suppressed.

  Further, according to the present embodiment, the distance G between the first outlet 26 and the inlet 14 that is closest to the inlet 14 is between the second outlet 28 and the inlet 14 that is closest to the inlet 14. Is larger than the distance F. Mixing of the mixed air blown out from the first blowout port 26 and the second blowout port 28 by separating the first blowout port 26 from the periphery of the introduction port 14 where the mixing rate of the mixed air decreases on the side surface 12A of the duct 12. The rate can be made uniform.

  As mentioned above, although an example of embodiment was demonstrated about this invention, this invention is not limited to this embodiment, Various other embodiment is possible within the scope of the present invention.

  For example, in the above-described embodiment, the outside air intake port 20 is formed on the side surface 12D facing the side surface 12A on which the introduction port 14 of the duct 12 is formed, but is substantially in the longitudinal direction of the ceiling surface 12B and the bottom surface 12C of the duct 12. You may form in the center part. In this case, since the conditioned air introduced from the inlet 14 and the outside air taken in from the outside air inlet 20 can be prevented from colliding from the front, the wind direction plate 24 becomes unnecessary.

  Moreover, in the said embodiment, the inlet 14 and the external air intake 20 were formed in the approximate center part in the longitudinal direction of the duct 12. FIG. However, the positions of the introduction port 14 and the outside air intake port 20 are not limited to the above-described embodiment, and may be one end portion or the like in the longitudinal direction of the duct 12.

  Further, when the height E of the space 18 of the duct 12 is ½ times or more the height D of the introduction port 14, vortexes of conditioned air and outside air are formed in the space 18. For this reason, the cross-sectional shape of the duct 12 may be a square shape, an elliptical shape, or the like as long as the height E of the space 18 is equal to or greater than ½ times the height D of the introduction port 14.

  In the above embodiment, the dimensions of the duct 12 and the introduction port 14 are exemplified, but the dimensions are not limited to the above embodiment, and are appropriately determined depending on the place where the air conditioning chamber duct 10 is installed, the use, and the like.

DESCRIPTION OF SYMBOLS 10 Air conditioning chamber duct 12 Duct 14 Inlet 18 Space part 18A Inlet side space part (space part)
18B Outside air intake side space part (space part)
20 Outside air intake 24 Wind direction plate 26 First outlet (air outlet)
28 Second air outlet (air outlet)

Claims (3)

A duct with a longitudinal end closed;
Formed on a side surface of the duct, and an inlet for introducing conditioned air into the duct;
Space portions formed between the introduction port and the ceiling surface of the duct and between the introduction port and the bottom surface of the duct and having a height that is 1/2 or more times the height of the introduction port. When,
An outside air intake port that is formed on the ceiling surface, the bottom surface of the duct, or a side surface that faces the side surface on which the introduction port is formed, and takes outside air into the duct;
A blower outlet that is formed at a position away from the inlet on the side surface of the duct and blows out mixed air in the duct in which conditioned air and outside air are mixed,
A chamber duct for air conditioning comprising: The outside air intake port is formed on a side surface facing the side surface where the introduction port of the duct is formed,
Between the outside air inlet and the inlet, a wind direction plate is provided to change the inflow direction of outside air taken from the outside air inlet,
The air-conditioning chamber duct according to claim 1. The first air outlet formed on the side surface of the duct where the inlet is formed is longer than the second air outlet formed on the side surface facing the side surface where the inlet of the duct is formed. Away from the inlet along the direction,
The air-conditioning chamber duct according to claim 1 or 2.

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