JPH06213477A - Air conditioning system - Google Patents

Abstract

PURPOSE:To keep a temperature and a humidity within an air conditioned room at a constant value without being influenced by an air conditioning air pressure within an under-floor chamber and an air speed. CONSTITUTION:An air guide member 20 is installed at an opening formed at a floor surface. The member 20 is rotatably and slidably arranged around a fulcrum point of a central shaft 21 of the opening. A lid member 30 forming the member 20 and an air guide cylinder are rotated from each other. A surface of the lid member 30 is formed with triangular air blowing holes 34, 34.... The air guide cylinder 32 is projected with and formed with an air receiver 36. The air receiver plate 36 banks the conditioned air within the under-floor chamber to form an air accumulation part. The accumulated air is guided to the lid member 30 and the air is blown out into the room through air blowing out holes 34, 34.... The air receiver plate 36 of the air guide member 20 arranged at a location where a static pressure within the under-floor chamber is low and a location where an air speed is slow is oppositely arranged against a direction of flow of conditioned air, the conditioned air flowing there is forcedly guided and blown out into a room to be air conditioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system, and more particularly to an air conditioning system that blows conditioned air from an underfloor chamber into a room to air-condition the room.

[0002]

2. Description of the Related Art In recent years, in office buildings and the like, as shown in FIG. 4, members such as a free access floor are used to create a space under the floor (hereinafter referred to as "underfloor chamber").
1 is formed. Warm air or cold air conditioned by the air conditioner 2 is supplied into the underfloor chamber 1, and this conditioned air is blown out from a plurality of air outlets 4, 4, ... Formed in substantially the entire area of the floor surface 3. As a result, the air conditioning in the air conditioning target room 5 is performed.

The conditioned air supplied into the room 5 is transferred to the ceiling surface 6
Are sucked into the ceiling chamber 8 through the air suction ports 7, 7 ... Formed in the above, and a part of the air is exhausted to the outside, while the remaining air is conditioned again by the air conditioner 2 and circulated. Further, in the air conditioning system, there is a system in which a booster fan is provided at each of the air outlets 4, 4, ... In order to make the distribution of the amount of air blown out from each of the air outlets 4, 4, ... uniform.

[0004]

However, the conventional air conditioning system has the following problems. Since the pressure distribution in the underfloor chamber 1 is nonuniform depending on the distance from the air conditioning air outlet 9 of the air conditioner 2, the air outlets 4, 4,
The amount of air blown from the air fluctuates depending on the formation positions of the air outlets 4, 4 ,. As a result, the temperature / humidity distribution in the chamber 5 becomes non-uniform, and there is a drawback in that it cannot be maintained at an appropriate temperature / humidity.

This problem similarly occurs in an air conditioning system in which booster fans are provided at the air outlets 4, 4, .... FIG. 5 shows the relationship between the pressure distribution in the underfloor chamber 1 with respect to the distance from the air conditioning air outlet 9 and the air volume from the air outlets 4, 4, .... In general, the dynamic pressure of the conditioned air increases as it approaches the conditioned air discharge port 9, so that the air in the chamber 5 is often attracted in reverse due to Bernoulli's theorem. Due to this effect, the air conditioning air outlet 9
The static pressure tends to decrease as the distance from the air-conditioning air discharge port 9 increases, and the static pressure tends to increase as the distance from the air-conditioning air discharge port 9 increases. This distribution tendency is determined by the capacity and operating condition of the air conditioner 2.

The above phenomenon similarly occurs in an air conditioning system provided with a booster fan. That is, since the air volume from the air outlets 4, 4, ... Depends on the formation position of the air outlets 4, 4, ..., The supply air volume in the chamber 5 becomes unbalanced, and the temperature and humidity in the air-conditioned room are kept constant. Can not. FIG. 6 shows the results of measurement of the wind velocity distribution of the conditioned air blown out from the conditioned air discharge port 9 by a model experiment. According to the figure, the speed of the conditioned air supplied to the underfloor chamber 1 was found to be low near the side of the conditioned air discharge port 9.

The present invention has been made in view of the above circumstances, and it is possible to keep the temperature and humidity in the air-conditioned room constant without being affected by the pressure of the conditioned air and the wind speed in the underfloor chamber. The purpose is to provide an air conditioning system that can.

[0008]

In order to achieve the above object, the present invention supplies air conditioned by an air conditioner to an underfloor chamber of a room to be conditioned, and forms this conditioned air over substantially the entire floor surface. In an air conditioning system for supplying air-conditioned air from the plurality of air outlets to the air-conditioned room, an air-bearing plate for guiding the air-conditioned air supplied to the underfloor chamber to the air outlets is formed in a protruding manner. A guide member is rotatably arranged at each air outlet, and the air guide member is rotated to change the direction of the wind receiving plate so that the air volume blown out from all the air outlets becomes substantially uniform. The feature is that it is set according to the position of the outlet.

[0009]

According to the present invention, the air guide member rotatably arranged at each air outlet is rotated, and the direction of the wind receiving plate projecting from the air guide member is changed according to the position of the air outlet. The air volume blown out from all the air outlets is made substantially uniform by setting the above. That is, a portion having a low static pressure in the underfloor chamber, and the wind receiving plate of the air guide member arranged at a place where the wind speed is slow, facing the flow direction of the conditioned air,
The conditioned air flowing through that portion was forcibly guided and blown out into the air-conditioned room, and the amount of air blown out from other air outlets was made approximately equal.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an air conditioning system according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a sectional view of an air conditioning system according to the present invention. An underfloor chamber 12 is formed under the floor of the room 10 to be air-conditioned by the air-conditioning system, and warm air or cold air conditioned by the air conditioner 14 is supplied into the underfloor chamber 12 from a discharge port 16. The conditioned air supplied into the underfloor chamber 12 is blown toward the inside of the chamber 10 from a large number of air guide members 20, 20, ... Arranged at predetermined intervals over substantially the entire floor surface 18. As a result, the inside of the room 10 is conditioned by the conditioned air.

Further, the conditioned air supplied into the chamber 10 is
The air is sucked into the ceiling chamber 26 from the air suction ports 24, 24 formed in the ceiling surface 22. Part of the air sucked into the ceiling chamber 26 is exhausted to the outside of the chamber 10, and the remaining air is conditioned again by the air conditioner 14 and circulated through the above-mentioned air path. The air guide member 20 has a floor surface 18
Are placed in the openings 28, 28 ... Formed in, and rotatably slidably contacted to the openings 28 about the central axis 21.

As shown in FIG. 2, the air guide member 20 is composed of a lid member 30 and an air guide tube 32. The lid member 30 and the air guide tube 32 are attached so as to rotate relatively. ing. On the surface of the lid member 30, there are provided triangular air outlet holes 34, 34 ...
1, the air guide portion 32 is formed with a wind receiving portion 36 protruding therefrom. The wind receiving plate 36 is the underfloor chamber 1 flowing from the direction of the arrow in the figure.
The conditioned air in 2 can be blocked to form an air trap, and this air can be guided to the lid member 30. Also, the lid member 30
The conditioned air guided to the air is blown toward the inside of the chamber 10 through the air blowing holes 34, 34 ...

Next, the operation of the air conditioning system configured as described above will be described. For example, the air guide member 2
As shown in FIG. 3, 0, 20 ... Are arranged at a predetermined distance from the discharge port 16 in the order of 4 units in row A and 3 units in rows B to E. Then, the wind receiving plates of the air guide members arranged at the low static pressure portion and the low wind speed portion in the underfloor chamber 18, that is, the winds of the two air guide members 20A, 20A arranged inside the row A. Support plate 36A, 36A
Are forced to flow in the direction of the conditioned air, and the conditioned air flowing in that part is forcibly guided and blown into the air-conditioned chamber 10, and the amount of air blown from the air guide members 20, 20, ... I made them almost equal.

As a result, according to this embodiment, it is easy to maintain the temperature and humidity in the air-conditioned room 10 constant without being affected by the pressure and the wind speed of the conditioned air in the underfloor chamber 18. You can

[0015]

As described above, according to the air conditioning system of the present invention, the air guide member arranged at each air outlet is rotated so that the direction of the wind receiving plate protruding from the air guide member is changed to the air direction. By setting it according to the position of the air outlet, the air volume blown out from all the air outlets is made substantially uniform, so that the air conditioning target is not affected by the pressure of the conditioned air in the underfloor chamber and the wind speed. Room temperature and humidity can be kept constant.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an air conditioning system according to the present invention.

FIG. 2 is a perspective view showing an embodiment of an air guide member applied to the air conditioning system according to the present invention.

FIG. 3 is a plan view of an air conditioning system according to the present invention.

FIG. 4 is a sectional view showing an example of a conventional air conditioning system.

FIG. 5 is an explanatory diagram showing the relationship between the pressure of conditioned air and the air volume in the underfloor chamber.

FIG. 6 is a diagram showing a wind speed of conditioned air in an underfloor chamber of a conventional air conditioning system.

[Explanation of symbols]

 10 ... Air-conditioned room 12 ... Underfloor chamber 14 ... Air-conditioner 16 ... Discharge port 20 ... Air guide member 30 ... Lid member 32 ... Air guide tube 34 ... Air blowout hole 36 ... Wind receiving plate

Claims (1)

[Claims] 1. An air conditioned by an air conditioner is supplied to an underfloor chamber of an air conditioned room, and the conditioned air is supplied to the air conditioned room from a plurality of air outlets formed in substantially the entire floor surface. In the air-conditioning system, an air guide member having a wind receiving plate projectingly formed to guide the conditioned air supplied to the underfloor chamber to the air outlet is rotatably arranged at each air outlet, An air conditioning system characterized in that the direction of the wind receiving plate is set according to the position of the air outlet by rotating the air guide member so that the amount of air blown out from all the air outlets becomes substantially uniform. .