JP3482633B2 - Air conditioning equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to air conditioning equipment for air conditioning (air conditioning) a living space of a building.

[0002]

2. Description of the Related Art As is well known, a heat storage system in an air conditioner performs a heat storage operation on a heat storage medium at night or at a low load, and uses its stored heat at a peak load to cut a peak load. Thereby, the capacity of the heat source device can be reduced and the running cost can be reduced, which is also effective from the viewpoint of energy saving.

[0003]

By the way, in the conventional heat storage system, it is the most general that the water held in the heat storage tank is used as the heat storage medium, but in recent years, the use of other heat storage media has been studied. . Above all, it is considered that the skeleton of a reinforced concrete building is effective as a heat storage medium because it can be expected to secure a considerable amount of heat storage.

In view of the above circumstances, it is an object of the present invention to provide an effective air-conditioning facility that uses a building frame as a heat storage medium.

[0005]

SUMMARY OF THE INVENTION The present invention is an air conditioner that uses a slab, which is the skeleton of a building, as a heat storage medium, and a main air conditioner that processes an interior load and an outside air load, and a perimeter load. With a perimeter air conditioner that performs a heat storage operation for the slab as a heat storage medium, and to secure a floor chamber between the slab and the finishing floor by providing a finishing floor on the slab, the perimeter air conditioner, A heat storage operation is performed on the slab by circulating while circulating the air in the floor chamber, and by supplying air to the perimeter through the floor chamber, the heat of the slab is used to process the perimeter load. It is configured to perform normal operation. It is preferable that the slab is subjected to heat storage operation by the outside air by taking in the outside air from the perimeter air conditioner, supplying the outside air to the floor chamber, and discharging the outside air from the floor chamber. Further, it is preferable to increase or decrease the air flow rate of the perimeter air conditioner according to the perimeter load amount.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system diagram of an air conditioner which is an embodiment of the present invention. Reference numeral 1 in the figure is a room to be air-conditioned,
Reference numeral 2 is a slab used as a heat storage medium, 3 is a finishing floor forming a floor chamber 4 on the slab 2, 5 is a ceiling surface forming a ceiling chamber 6, and 7 is a window surface.

Reference numeral 8 is a main air conditioner for processing the interior load and the outside air load. The air supply from the main air conditioner 8 is supplied to the room through the air supply duct 9, and the ceiling surface near the window surface 7 is supplied. Room air is sucked in from the suction port 10 provided in 5, and is returned from the ceiling chamber 6 through the return air duct 11 to the main air conditioner 8 for circulation. Further, the main air conditioner 8 takes in outside air through the outside air duct 12, and an amount equivalent to the outside air is exhausted from the middle of the above return air duct 11 through the exhaust duct 13 by the exhaust fan 14.

Reference numeral 15 is a perimeter air conditioner for processing the perimeter load and performing heat storage operation for the slab 2. Air supply from the perimeter air conditioner 15 is supplied to the floor chamber 4 through the air supply duct 16 and is supplied to the floor. Outlet 1 provided from the chamber 4 to the window stand (peri-counter)
7, the air is blown upward along the window surface 7, the supply air is sucked into the ceiling chamber 6 from the suction port 10, and is returned from the middle of the return air duct 11 to the perimeter air conditioner 15 by the return air duct 18. To circulate.

The perimeter air conditioner 15 is also provided with a return air duct 19 for returning the supply air supplied to the floor chamber 4 directly from the floor chamber 4 to circulate the air. Further, the perimeter air conditioner 15 has an outside air duct. The outside air can be taken in through 20. Code 2
Reference numerals 1, 22, and 23 are dampers, respectively.

Further, reference numeral 24 is a perimeter load measuring means, which is controlled by the air flow rate control means 25 so that the amount of air blown by the perimeter air conditioner 15 becomes optimum according to the perimeter load measured thereby. It has become. As the above-mentioned measuring means 24, it is possible to preferably employ one having a configuration in which the radiation temperature of the window surface 7 is measured by a sensor and the load is calculated based on it. An inverter can be preferably used as the control means 25.

The operation modes of the air conditioning equipment will be described below. (A) Daytime heat dissipation operation In a normal operation mode, as shown in (a), while the outside air is taken in by the main air conditioner 8, the interior load and the outside air load are processed and the air supply duct 9 supplies air to the room. ,
The return air is circulated from the suction port 10 through the ceiling chamber 6 and the return air duct 11, and a part of the return air is exhausted by the exhaust fan 14. At the same time, the perimeter load is processed by the perimeter air conditioner 15 and air is supplied to the perimeter from the air outlet 17 through the air supply duct 16 and the floor chamber 4, and the suction port 1
0, ceiling chamber 6, return air duct 11, return air duct 18
Circulate through the air.

At this time, the slab 2 has already stored heat in the heat storage operation mode described below, and the stored heat is radiated to the supply air supplied into the floor chamber 4 and used. That is, during cooling, the slab 2 is cooled to, for example, about 15 to 20 ° C., and the supply air supplied to the perimeter is brought into contact with such a low temperature slab 2 and further cooled before being blown out to the perimeter. . During heating, the slab 2 is heated to, for example, about 30 ° C., and the supply air is further heated by the slab 2 and then blown out. Therefore, the processing in the perimeter air conditioner 15 can be reduced by the amount of heat that can be expected from the slab 2, that is, the amount of heat stored in the slab 2 can be used.

Further, at this time, the perimeter air conditioner 1 is responsive to the perimeter load measured by the measuring means 24.
The amount of air blown from 5 is optimally controlled by the control means 25. In addition, it is preferable that the control unit 25 determines the amount of air blown in consideration of various conditions so that the amount of heat stored in the slab 2 and the release of the held heat are appropriately performed.

(B) Night heat storage operation This is an operation mode in which heat is stored in the slab 2 by the perimeter air conditioner 15 when air conditioning is stopped at night.
As shown in FIG. 3, the main air conditioner 8 is stopped, the damper 21 is closed, the damper 22 is opened, and the perimeter air conditioner 15 is operated to supply the air supply from the perimeter air conditioner 15 to the floor chamber 4. From the return air duct 19 so that the slab 2 is circulated so as to be directly returned to the slab 2.
The heat is stored until it reaches about ° C or about 30 ° C during heating.

(C) Nighttime outside air heat storage operation This is an operation mode in which heat is stored in the slab 2 by the outside air when the outside air temperature conditions such as the intermediate period are satisfied. That is, when the outside air temperature is lower than the indoor set temperature (more strictly, the outside air enthalpy is lower than the indoor enthalpy) at night or the like in the cooling season, if the outside air is supplied to the floor chamber 4 as it is, the slab 2 can reach the outside air temperature. It is possible to cool and store heat (cold storage). Therefore, as shown in (c), the damper 23 is opened, and the outside air is taken in by the perimeter air conditioner 15. The outside air is directly supplied to the floor chamber 4 without being processed and blown out from the blowout port 17 and the suction port 1
0 to ceiling chamber 6, return air duct 11, exhaust duct 1
Exhaust is carried out by the exhaust fan 14 through 3.

According to the above air conditioning equipment, the slab 2 can be effectively used as a heat storage medium for processing the perimeter load, and therefore the perimeter load capacity can be reduced and the operating cost can be reduced.

Further, depending on the outside air conditions, the outside air is used to store heat in the slab 2, so that the running cost required for the heat storage operation can be reduced as compared with the case where heat is always stored by the perimeter air conditioner 15.

Further, by measuring the perimeter load by the measuring means 24 and increasing / decreasing the amount of air blown to the perimeter by the control means 25 based on the measured load, the blowing power can be reduced when the load is small, and when the airflow is always constant. Blower power can be reduced in comparison. Even if the air flow rate is reduced, the required outside air volume is secured by the main air conditioner 8, so the ventilation condition is not impaired.

[0019]

As described above, according to the present invention, the perimeter load is processed while the heat stored in the slab is stored by the perimeter air conditioner, and the perimeter is supplied to the perimeter through the floor chamber. Since the configuration is used, the slab can be effectively used as a heat storage medium for processing the perimeter load, and therefore the perimeter load processing capacity and operating costs can be reduced. Further, depending on the outside air conditions, the outside air is used to store heat in the slab, so that the running cost required for the heat storage operation can be reduced. Further, the blower power can be reduced by measuring the perimeter load and increasing or decreasing the amount of blown air to the perimeter based on the measured load.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of air conditioning equipment of the present invention.

[Explanation of symbols]

2 slabs (heat storage medium) 3 finishing floor 4 floor chamber 8 Main air conditioner 15 Perimeter air conditioner 24 Perimeter load measuring means 25 Blower volume control means

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-101337 (JP, A) JP-A-10-9614 (JP, A) JP-A-5-157279 (JP, A) JP-A-9- 119672 (JP, A) JP 5-98718 (JP, A) JP 7-42970 (JP, A) JP 60-253743 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24F 5/00 F24F 5/00 102

Claims (3)

(57) [Claims] 1. A main air conditioner for processing an interior load and an outside air load, which is an air conditioner using a slab, which is a structure of a building, as a heat storage medium.
With a perimeter air conditioner for processing a perimeter load and performing heat storage operation for a slab as a heat storage medium, a finishing floor is provided on the slab to secure a floor chamber between the slab and the finishing floor, and The perimeter air conditioner performs a heat storage operation on the slab by circulating while processing the air in the floor chamber, and uses the heat retained by the slab by supplying air to the perimeter through the floor chamber. The air conditioning equipment is characterized by being configured to perform normal operation while processing the perimeter load. 2. The perimeter air conditioner is configured to perform a heat storage operation by the outside air on the slab by taking in the outside air, supplying the outside air to the floor chamber, and discharging the outside air from the floor chamber. Air conditioning equipment described. 3. The air conditioning equipment according to claim 1, wherein the perimeter air conditioner is configured to increase or decrease the supply air amount according to the perimeter load amount.