JPH06347060A - Air-conditioning method utilizing coanda effect - Google Patents

Abstract

PURPOSE:To condition air by producing the proper flow of air in the space of a living room utilizing Coanda effect so as not to generate cold draft and the like while utilizing the heat energy of a radiation panel effectively. CONSTITUTION:The surface of walls B is finished so as to be flat surface capable of obtaining Coanda effect. Radiation panels 10, which can be controlled individually, are arranged at least at the upper part and lower part of the wall surfaces B while air outlet ports 20, which can be controlled individually, are provided between the ceiling surface and the wall surfaces and between the floor surface and the wall surfaces. Air conditioning is effected by a method wherein air is sent out of the air outlet ports 20 along the wall surfaces B while regulating the flow rate thereof and the air, sent out of the air outlet ports 20, is made to flow along the wall surfaces B utilizing Coanda effect, then, the air is sucked through air suction ports 30, 40 to generate the convection of air in a room by controlling the air suction ports 30, 40, provided near the center of the ceiling surface and the floor surface, individually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning method for a living room space, and in particular, utilizes the Coanda effect to create a flow of indoor air and to perform appropriate air conditioning.

[0002]

2. Description of the Related Art Conventionally, as equipment for cooling and heating living areas such as conference rooms and offices, there has been an air conditioning system in which an air outlet and an air inlet are arranged. Furthermore, there is also an air conditioning system for the purpose of forming a more comfortable thermal environment by using a radiation panel embedded in the body together with such an air conditioning system.

[0003]

In an existing cooling and heating system using a radiation panel, blown air is directly supplied to a target living area to transport heat, and formation of a radiation temperature field is controlled by the radiation panel. Was there. However, in such a conventional system, the air temperature is controlled only by the air-conditioning system, so that it has been pointed out that the thermal energy of the radiation panel is not effectively used.

Furthermore, for cold drafts that are likely to occur during cooling in the summer or on the window side in the winter, the control of the air conditioning system is not sufficient, and a design that takes into consideration the flow of the airflow throughout the room is required. . In addition, during heating in winter, it is necessary to send warm air to the feet of residents to improve comfort, and in particular, it is required to form a good thermal environment including measures against cold illness. It was However, there was a dislike that the performance cannot be fully exhibited by the air-blowing method of a normal air conditioning system.

Therefore, the present invention uses the Coanda effect to create an appropriate air flow in the living room to perform air conditioning while effectively using the thermal energy of the radiant panel so that cold drafts and the like do not occur. To aim.

[0006]

In order to achieve the above object, there is provided a method for air conditioning a living room space including a wall, a floor, a ceiling, etc., in which at least an upper part and a lower part of the wall can be individually temperature-controlled. Along the wall surface that has a panel and has a flat surface so that the Coanda effect can be obtained, the air outlets on the ceiling wall and the floor wall are individually controlled to open and close to adjust the air volume. While blowing air into the room while controlling the opening and closing of the air suction port provided near the center of the ceiling surface and the floor surface individually, sucking the air blown out along the wall surface, the flow of air to the living room space to make.

[0007]

According to the present invention, the air is blown out while adjusting the air volume from the air outlet provided near the wall of the ceiling surface or the floor surface along the flatly finished wall surface for obtaining the Coanda effect. The blown air can be sucked and flow to a flat wall surface, and the arrival distance of the air in the living room can be extended along the wall surface while reducing the velocity attenuation as compared with the free jet flow. In addition, the opening and closing of the air suction port provided near the center of the ceiling surface and the floor surface are individually controlled, and the air flowing along the wall surface and the ceiling surface or the floor surface is sucked by the above Coanda effect. The flow of can be created.

Further, since the radiation panel which can be individually controlled is provided on at least the upper and lower portions of the wall, the air flowing along the wall surface can be heated or cooled by the radiation panel. Furthermore, by individually controlling the radiation panels, it is possible to create an air flow necessary for a desired air conditioning environment while appropriately controlling the thermal convection of the air together with the adjustment of the air volume of the air outlet. .

[0009]

Embodiments of the present invention will be described with reference to the drawings. In this embodiment, in order to effectively utilize the Coanda effect, the living room space A having the following structure is used. In the living room space A, the radiation panel 10 and the air outlet 20 are provided on the generally facing walls. Further, air inlets 30 and 40 are provided on the ceiling surface and the floor surface, and the individual air outlets 2
0, the suction ports 30 and 40, and the radiation panel 10 are individually controllable. In the living room space configured in this manner, the air blown out from the air outlet 20 is caused to flow along the wall surface B, and is appropriately heated or cooled by the radiation panel 10 on the wall while the air inlet 30 on the ceiling surface or the floor. It is possible to create a flow of air in the living room space A by sucking the air from the air suction port 40 on the surface.

The wall surface B used in the present invention has a flat and smooth wall surface finish so that the air blown from the air outlet 20 can flow along the wall surface B by the Coanda effect. The radiation panel 10 is embedded in the upper part and the lower part of the wall surface B configured in this way, and is integrally provided to the extent that unevenness does not occur on the surface of the wall surface B. Further, the surface of the radiation panel 10 is also formed flat and smooth so as to be integrated with the wall surface B so as to increase the radiation efficiency and not interfere with the Coanda effect. On the back surface of the radiation panel 10, incidental equipment such as a cold water pipe or a hot water pipe is provided to warm or cool the radiation panel 10, and the upper and lower radiation panels 10 can be heated or cooled. You can do it. A glass window C that can be opened and closed may be interposed between the upper and lower radiation panels 10.

An air outlet 20 is provided along the wall surface B between the ceiling surface and the floor surface. The opening direction of the air outlet 20 is set so that the air can be blown out in parallel along the wall surface B. The air outlets 20 can individually adjust the air volume. By individually adjusting the air flow rates of the individual air outlets 20 in this manner, it is possible to form a more appropriate air flow according to the environment of the living room space A. For example, while the air outlet 20 provided on the ceiling surface is closed, the air can be blown out from the air outlet 20 provided near the wall on the floor.

Further, air inlets 30 and 40 that can be opened and closed are provided at the centers of the ceiling surface and the floor surface. The air suction ports 30 and 40 can also be individually opened and closed on the ceiling surface and the floor surface. A plurality of air inlets 30 and 40 provided on the ceiling surface and the floor surface may be provided on the ceiling surface and the floor surface, but if possible, it is desirable to concentrate them in one place. Also in this embodiment, two adjacent air suction ports 30 and 40 are provided centrally on the ceiling surface and the floor surface respectively.

The present invention was carried out in the following manner using the living room space A having the above structure. In the winter, the air outlet 20 provided on the wall on the floor surface is closed, and the warm air is flowed downward along the wall surface B from the air outlet 20 provided on the wall on the ceiling surface. On the other hand, the radiation panel 10 is warmed by flowing hot water to the back surface of the radiation panel 10 in the middle of the wall surface B. The warm air is warmed by the radiation panel 10 without causing a temperature drop,
It descends to the floor due to the Coanda effect, and flows further parallel to the floor under the feet. Then, the warm air rises from near the center of the floor surface toward the air suction port 30 at the center of the ceiling surface. Such a state occurs simultaneously on the left and right sides of the living room space A.

In the summer, the air outlet 20 provided on the ceiling wall is closed, and the air outlet 20 provided on the floor wall is closed.
Cold air flows upward along the wall surface B. On the other hand, the radiation panel 10 is cooled by flowing cold water to the back surface of the radiation panel 10 in the middle of the wall surface B. Cold air is on the way to the radiation panel 10
While being appropriately cooled by, the temperature rises up to the ceiling surface by the Coanda effect and flows almost parallel along the ceiling surface while preventing the temperature rise. Then, the cool air descends from the vicinity of the center of the ceiling surface toward the air suction port 40 in the center of the floor surface. Such a state occurs simultaneously on the left and right sides of the living room space A.

Under the conditions of the living room space A having the above-mentioned structure, the air flow due to the Coanda effect in winter and summer was confirmed by a numerical simulation by a computer. The results are shown in FIG. 3 for the winter season and FIG. 4 for the summer season. FIG. 3A shows an air blowing wind speed of 0.2 m.
It is a vector diagram which shows the flow of air when warm air is blown out from the air outlet 20 by the wall of the ceiling surface at / s. Further, FIG. 3 (b) is a diagram of iso-velocity lines under the same conditions.
FIG. 4A is a vector diagram showing the flow of air when cold air is blown from the air outlet 20 near the wall on the floor at an air blowing wind speed of 0.2 m / s. In addition, FIG.
[Fig. 4] is a diagram of iso-velocity lines under the same conditions. The substantially L-shaped portions provided facing each other in the center in the figure imitate the center desk in the living room space A.

In the case of fluctuating air-conditioning in which a horizontal draft is generated at an arbitrary height of the wall surface B of the living room space A, the air outlets 20 near the ceiling and floor surfaces are opened so that the upper and lower sides of the wall surface B are opened. Air is blown out along the wall surface B from the direction. further,
The two air suction ports 30 near the center of the ceiling surface are open, and the two air suction ports 40 near the center of the floor surface are closed. By doing so, the air flowing along the wall surface B from the vertical direction collides with the wall surface B, and the flow of the air changes its direction toward the center of the living room space A. The changed flow of air reaches the vicinity of the center of the living room space A, and further rises from there to the two air suction ports 30 near the center of the ceiling surface. This state occurs on the left and right wall surfaces B of the living room space A.

In the winter, summer and fluctuation air-conditioning of the above-mentioned embodiment, it is assumed that two people are sitting on a chair toward the table in the center of the living space A.
In the winter, warm air flows to the feet of humans, and in the summer, cold air drops from above the human head, forming an air flow.
Further, in the fluctuation air conditioning, it is possible to form a refreshing air flow from behind, stroking around the shoulders of a person. Further, the present invention is not limited to the above-described embodiment, and, for example, a wall surface surrounding the living room space A, for example, as shown in FIG. A radiation panel may be provided, and an air suction port may be provided on the ceiling surface and the floor surface. The shape of the living room space A may be variously modified within the scope of the present invention.

[0018]

Since the present invention uses the radiant energy of the radiant panel and the heat of the radiant panel, it can be operated with less energy consumption than the air conditioning method by the normal method. Furthermore, since the air flows along the wall surface by utilizing the Coanda effect, it is possible to prevent the occurrence of cold draft which is likely to occur on the window side in the cooling in the summer or in the winter.
In particular, by blowing air from the ceiling in winter, warm air can be blown to the feet of the occupants, which has been a problem in the past, and a comfortable thermal environment can be formed. By controlling the amount of air blown from the ceiling surface and floor surface, it is possible to create a lateral draft at any height on the wall surface.
It is possible to improve comfort by appropriately swaying the air flow in the room. Even in the perimeter zone where either wall faces the outside air, the loss of the mixed heat in the room can be minimized by controlling both the air outlet and the radiation panel to be operated.

[Brief description of drawings]

FIG. 1 is a diagram (a) showing a state of arrangement of an air outlet, an air inlet, and a radiation panel in a living space. The figure (b) which showed the flow of the air in a living room at the time of operation of an air conditioning system in winter. The figure (c) which showed the flow of the air in a living room at the time of an air conditioning system operation in the summer.

FIG. 2 is a diagram showing an air flow during fluctuation air conditioning.

FIG. 3 is a vector diagram (a) when numerically simulating the air flow in the living room during system operation in winter. Iso-velocity diagram (b) created by numerical simulation of air flow in the living room during system operation in winter.

FIG. 4 is a vector diagram (a) when numerically simulating the air flow in the living room during system operation in summer. Iso-velocity diagram (b) created by numerical simulation of air flow in the living room during system operation in summer.

FIG. 5 is an explanatory view schematically showing the flow of air when the method of the configuration according to the present invention is applied to the four walls of the living space.

[Explanation of symbols]

 10 Radiation panel 20 Air outlet 30 Air inlet 40 Air inlet A Living space B Wall surface

Claims (1)

[Claims] 1. A method of air conditioning a living room space including a wall, a floor, a ceiling, etc., wherein at least upper and lower portions of the wall have radiation panels capable of individually controlling temperature, and a Coanda effect is obtained. Along the wall surface of which the surface is finished flat, the air outlets provided on the ceiling wall and the floor wall are individually controlled to open and close to blow air into the room while adjusting the air volume. Air-conditioning using the Coanda effect characterized by individually controlling the opening and closing of the air suction port provided near the center of the floor surface to suck the air blown out along the wall surface and create a flow of air in the living room space Method.