JP3209311B2 - Air conditioning system - Google Patents

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,
In particular, an air conditioner is connected to the ceiling space surrounded by the ceiling board and the upper floor floor slab of the building such as a building, and the space above the ceiling is used as an air supply chamber. The present invention relates to an air conditioning system for supplying conditioned air.

[0002]

2. Description of the Related Art This type of air conditioning system uses a ceiling space as a pressure equalizing chamber without providing a duct in the ceiling, and supplies air-conditioned air from a plurality of blowout devices arranged on a ceiling board to the room. I have. By the way, the advantage of using the space above the ceiling as an air supply chamber is that compared to the case where a duct is installed in the ceiling, the equipment cost can be greatly reduced because the duct is not used, and construction in a short construction period is possible. It is possible. On the other hand, there is a problem that the ability to follow a change in indoor heat load is poor.

In general, the indoor heat load is unevenly distributed and greatly fluctuates with time. Particularly in a place where the heat load is easily affected by external heat due to solar radiation or the like, the fluctuation width is large.

[0004]

However, in the conventional air conditioning system using the space above the ceiling as an air supply chamber, since the direction of intake of the conditioned air supplied from the air conditioner to the air supply chamber is fixed, heat is not generated. There is a drawback that air-conditioning air cannot be distributed in conjunction with a change in load.

[0005] As means for solving such disadvantages,
Separately from the method using the air supply chamber, there is a method in which a fine coil unit is installed in a place that is easily affected by heat, and the supply of cold and hot water is controlled according to the fluctuation of the heat load to control the temperature. is there. There is also an air conditioning system in which a blower is provided at each outlet to vary the amount of air blown out from each outlet according to the uneven distribution of the indoor thermal load. However, the former requires the installation of piping and the use of a fine coil unit, which leads to an increase in equipment costs. Also, in the latter case, it is necessary to install a blower for each discharge port, which increases equipment costs.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an air conditioning system having a simple structure and capable of following a change in indoor thermal load.

[0007]

According to the present invention, in order to achieve the above-mentioned object, the space above the ceiling is used as an air supply chamber, and a large number of air outlets are formed substantially all over the ceiling surface. In an air conditioning system for supplying air-conditioned air discharged to an air chamber from the outlet to a room, a swingable diffuser is provided at a discharge port for discharging air-conditioned air from the air conditioner to the air supply chamber, and the direction of the diffuser is changed. By changing the direction, the direction of the air-conditioning air discharged from the discharge port can be changed.

[0008]

According to the present invention, the swingable diffuser is provided at the discharge port of the air-conditioning air to the air supply chamber. Therefore, when the indoor heat load is unevenly distributed, the area where the maximum heat load is applied is provided. The direction of the diffuser can be directed to the outlet to blow out. As a result, the air-conditioned air discharged from the discharge port forms an airflow that flows toward the outlet having the maximum heat load and the outlet near the outlet. Thereby, the balance can be adjusted so that the supply air amount blown out from the outlet having the maximum heat load among the many outlets formed on the ceiling surface is increased. In addition, when the time from when the air-conditioning air is discharged from the discharge port to the time when the air is supplied from the respective outlets to the room is viewed, the outlet having the maximum heat load forms the above-described airflow, and the residence time in the air supply chamber. Can be reduced. This allows the air to be blown out from the outlet while the temperature of the air-conditioned air conditioned by the air conditioner is maintained (for example, the cool air maintains the cool air temperature). Therefore, the room temperature can be made uniform with a simple structure.

Further, a plurality of temperature sensors are provided in the room, an area having a maximum heat load in the room is detected based on temperature information from the temperature sensors, and the diffuser is controlled so that the direction of the diffuser is directed to the air outlet that blows out to the area. By doing
The balance adjustment of the supply amount blown into the room from each outlet can be automated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred first embodiment of an air conditioning system according to the present invention will be described below in detail with reference to the accompanying drawings. FIG.
FIG. 2 is a plan view of an embodiment of the air conditioning system according to the present invention, and FIG. 2 is a side view of FIG. As shown in FIGS. 1 and 2, an air conditioner 10 serving as a supply source of air-conditioning air includes a duct 12.
Is connected to the air supply chamber 14 via the

The air conditioner 10 has a heat exchanger 16 and a blower fan 18 as main components, and the outside air is sucked by the blower fan 18, and the sucked outside air is cooled or heated by the heat exchanger 16 and supplied. The gas is supplied into the air chamber 14. On the other hand, the air supply chamber 14 is formed by a ceiling board 24 of a room 22 in the building 20 and an upper floor slab 26, and the ceiling board 24 has an outlet 28 for blowing air-conditioned air into the room 22. Are formed in large numbers. The air supply chamber 14 is provided with swingable diffusers 32, 32, 32 in the vicinity of a discharge port 30 from which the air-conditioning air from the air conditioner 10 is discharged, and the diffusers 32, 32, 32 are provided. By changing the direction (angle), the direction of the conditioned air discharged from the discharge port 30 can be changed. In addition, this diffuser 3
Motors 2, 32, and 32 can rotate forward and reverse respectively.
4, 34, 34 are connected, and the motors 34, 3
By driving the diffusers 32 and 3,
2, 32 swing.

The operation of the first embodiment of the air-conditioning system according to the present invention configured as described above is as follows. As described above, the indoor heat load is unevenly distributed and greatly fluctuates with time. Particularly, in a place that is easily affected by external heat due to solar radiation or the like, the fluctuation width is large. For this reason,
Even in the same room, the room temperature is different between a place susceptible to solar radiation (hereinafter referred to as a perimeter zone) and a place less susceptible to solar radiation (hereinafter referred to as an interior zone). The following operation is performed to solve this problem.

First, the heating operation in winter will be described. During winter heating, the perimeter zone (the area within the dashed-dotted frame in FIGS. 1 and 2) is warmer than the interior zone because it is affected by solar radiation. In order to eliminate the difference in temperature distribution at room temperature, the motors 34, 34, 34 are driven to change the directions of the diffusers 32, 32, 32 (the directions of the diffusers 32, 32, 32 drawn by solid lines in FIG. That is, the air-conditioning air discharged from the discharge port 30 is directed to the interior zone side. Thereby, the conditioned air circulates in the air supply chamber 14 along a path indicated by a white arrow drawn by a solid line in FIG. As a result, the conditioned air is supplied to the interior zone in the shortest distance, so that the temperature of the interior zone rises and the temperature of the room becomes uniform.

Next, the summer cooling operation will be described. During the summer cooling, the operation of the motor 3 is reversed in the reverse of the operation during the winter heating.
4, 34, 34 are driven to diffusers 32, 32, 3
2 is changed to the perimeter zone side (the directions of the diffusers 32, 32, 32 drawn by dotted lines in FIG. 1, that is, inclined to the right side in FIG. 1), and the air-conditioning air discharged from the discharge port 30 is changed to the perimeter. Turn to the zone side. Thereby, the conditioned air circulates in the air supply chamber 14 along a path indicated by a white arrow drawn by a dotted line in FIG. As a result, since the conditioned air is supplied to the perimeter zone at the shortest distance, the temperature of the perimeter zone decreases and the temperature in the room becomes uniform.

As described above, according to the air conditioning system of the first embodiment, the diffusers 32, 3
By changing the angle of 2, 32, the supply direction of the conditioned air discharged from the discharge port 30 can be changed.
Therefore, by adjusting the angles of the diffusers 32, 32, 32, conditioned air can be supplied so as to eliminate the difference in the temperature distribution in the room.

In the second embodiment, the room temperature distribution is detected, and the angles of the diffusers 32, 32, 32 are automatically changed based on the detected temperature distribution. Change the angle from time to time.
In addition, about the same member as the member described in the first embodiment,
The same reference numerals are given and the description is omitted. As shown in FIG. 1 and FIG. 2, in the room 22 of the building 20, the first is located in a place most susceptible to solar radiation on the perimeter zone side, and the other is in a place least susceptible to solar radiation on the interior zone side. A temperature sensor 36 and a second temperature sensor 38 are provided. The first temperature sensor 36 and the second temperature sensor 38 detect the room temperature in the perimeter zone and the interior zone, respectively, and the temperature information of the detected room temperature is output to the control unit 40. The control unit 40 drives the motors 34, 34, 34 based on the temperature information to change the angles of the diffusers 32, 32, 32.

The operation of the second embodiment of the air-conditioning system according to the present invention configured as described above is as follows. The first temperature sensor 36 provided on the perimeter zone side and the second temperature sensor 38 provided on the interior zone side detect the temperature at each location as needed and transmit the temperature information to the control unit 40.
Output to In the control unit 40, based on this temperature information,
For example, in summer cooling, when the temperature detected by the second temperature sensor 38 is higher than the temperature detected by the first temperature sensor 36, the diffusers 32, 32, 32 are directed toward the perimeter zone. Motor 34, 3
4 and 34 to direct the conditioned air toward the perimeter zone. Thus, the conditioned air is supplied to the perimeter zone side at the shortest distance, so that the temperature on the perimeter zone side decreases.

As described above, according to the air-conditioning system of the second embodiment, the temperature distribution in the room is always detected and the supply direction of the air-conditioning air is changed as needed, so that the temperature in the room becomes uniform. In the second embodiment, the number of the temperature sensors for detecting the room temperature is two, but the number is not limited to this, and the temperature sensors may be provided at four corners of the chamber 22, for example. In this case, the temperature distribution in the room becomes clearer, and the temperature distribution can be made more uniform.

In the first embodiment and the second embodiment,
The diffusers 32, 32, 32 are driven by a motor, but the present invention is not limited to this. For example, the diffusers 32, 32, 32 may be driven by a cylinder or the like. Further, the first embodiment may be of a manual type.

[0020]

As described above, according to the present invention,
By providing a swingable diffuser in the vicinity of a discharge port for discharging air-conditioning air from an air conditioner to an air supply chamber, the direction of the air-conditioning air discharged from the discharge port can be changed. Therefore, when the heat load is unevenly distributed in the room,
By changing the direction of the diffuser and supplying the conditioned air to the air supply chamber so as to eliminate the uneven distribution of the heat load, the room temperature can be made uniform. In addition, since the structure is simple, there is no need to add or change equipment significantly.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of an air conditioner according to the present invention.

FIG. 2 is a side view of an embodiment of an air conditioner according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Air conditioner 14 ... Air supply chamber 20 ... Building 22 ... Room 24 ... Ceiling board 26 ... Upper floor floor slab 30 ... Discharge port 32 ... Diffuser 34 ... Motor 36 ... 1st temperature sensor 38 ... 2nd temperature sensor 40 ... Control unit

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kozo Izawa 1-1-1 Uchikanda, Chiyoda-ku, Tokyo Inside Hitachi Plant Construction Co., Ltd. (72) Inventor Junji Asai 1-11-1 Uchikanda, Chiyoda-ku, Tokyo No. Hitachi Plant Construction Co., Ltd. (56) References JP-A-6-257822 (JP, A) JP-A-5-312381 (JP, A) JP-A-5-118618 (JP, A) JP-A-4- 306444 (JP, A) JP-A-1-219433 (JP, A) JP-A-2-2213 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 11/02 102

Claims (2)

(57) [Claims] An air supply chamber is used as a space above the ceiling, and a large number of air outlets are formed in substantially the entire ceiling surface. Air-conditioned air discharged from an air conditioner to the air supply chamber is supplied from the air outlet into the room. In the air conditioning system, a swingable diffuser is provided at a discharge port for discharging air conditioning air from the air conditioner to the air supply chamber, and the direction of the air conditioning air discharged from the discharge port can be changed by changing the direction of the diffuser. An air conditioning system characterized by the above. 2. A plurality of temperature sensors are provided in the room, an area having a maximum heat load in the room is detected from temperature information from the temperature sensors, and the direction of the diffuser is directed to the air outlet that blows out to the area. The air conditioning system according to claim 1, wherein the air conditioning system is controlled.