JPH0663654B2 - Building air conditioner and its ceiling structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air conditioner for a building having an energy saving effect and its ceiling structure.

<< Prior Art >> In a conventional air conditioner, an air supply duct is arranged on the lower surface of a reinforced concrete slab, and the chamber is appropriately exposed to the space to be cooled and heated from this duct.

<Problems to be solved by the invention> In the conventional air conditioner, the chamber facing the room that needs the cold and warm air obtained by the heat exchanger such as the heat pump is opened, or the heat exchanger is operated as necessary. Therefore, in the initial period when the air conditioner is driven, it takes a long time for the required room temperature to reach the set temperature (hereinafter, rise time), and the partition walls and floor slabs reach the outside air temperature during the night when the air conditioner is stopped. Get closer. This makes the rise time during air conditioning even worse.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioner for a building and its ceiling structure, which are advantageous in rising time and running cost.

<< Means for Solving the Problems >> In order to achieve the above object, the air conditioner for a building of the present invention comprises a double floor on the upper surface of a reinforced concrete slab and obtains a gap between the lower surface of the slab and the floor. By constructing a ceiling panel suspended from the slab, a cold / hot air passage is formed on the upper and lower surfaces of the slab, and a cold / hot air outlet is opened at an arbitrary position on the ceiling panel, and the slab communicates with the upper and lower surfaces thereof. A through hole is provided, and cold / warm air from a heat exchanger is further supplied to this cold / hot air passage.

It is effective that the ceiling panel is made of metal or non-metal plywood having excellent heat radiation.

In the ceiling structure forming part of the cold / hot air passage, a blower facing the room at the cold / hot air outlet of the ceiling panel can be integrally attached to the panel. In addition, a blower may be provided below the concrete slab to blow air from the cold / hot air passage toward the cold / hot air outlet.

<< Operation >> When the air conditioner configured as described above is activated, cold / hot air is supplied from the heat exchanger to the cold / hot air passage, and the cold / hot air flows through the through holes of the slab in contact with both the upper and lower surfaces of the slab. At that time, heat exchange by heat conduction works between the cold and hot air flowing and the slab, and heat is stored in the slab body.

Therefore, heat is mutually supplemented by heat conduction between the slab and the cold / hot air passage space.

<< Example >> An example will be described with reference to the drawings. In FIG. 1, a double floor 12 is provided on the upper surface of a reinforced concrete floor slab 10.
Is provided to form a gap between the surface of the slab 10 and the floor material of the floor 12, and a ceiling panel 16 is hung on the back surface of the slab 10 with hanging bolts 14 to form spaces on the front and back of the slab 10, respectively. A cold / hot air passage 20 that connects the front and back of the slab 10 by forming a through hole 18 in a part of the slab 10.
Is formed.

Since the through holes 18 allow the air in the front and back spaces of the slab 10 to flow, it is usually highly efficient to have two or more. In the drawing, the indoor unit of the air-heat type heat pump 22 is provided at each of the left and right ends, and the through hole 18 on the left side is provided on the rear surface side of the slab 10, that is, on the rear ceiling side from the rear surface of the slab 10. The right through hole 18a is opened as it is through the duct 24 for the guide passage. Then, the blower 2 which is integrally attached to the ceiling panel 16 at an arbitrary position and can control the rotation speed
6 is provided.

Further, in order to easily return the air in the room to the cold / hot air passage 20, a part of the room is shielded, a return ventilation passage 30 is provided which stands up from the floor surface to the back of the ceiling and is provided with a suction port 28 at the lower portion thereof to provide cold / hot air. Forced ventilation is provided between the passage 20 and the indoor side (non-air-conditioned space).

In the embodiment shown in FIG. 2, a heat radiation panel 32 is used instead of the ceiling panel 16. Further, the blower 26 is suspended by the floor slab 10 and is attached so as to face the room through an opening provided in the heat radiation panel 32.

The heat radiation panel 32 may be a copper alloy plate, but may be a non-metallic plywood that is less likely to cause dew condensation and has a low thermal conductivity that is less likely to cause a temperature change. The heat is absorbed into the room from the ceiling surface and the floor surface.

<< Effect >> Since the present invention is configured as described above, the following effects can be obtained.

Since both the upper and lower sides of the reinforced concrete floor slab are hot and cold air passages that receive heat from the heat exchanger, heat can be stored in the slab itself.

As a result, it is possible to store the heat in the slab at midnight by using the surplus power at night.

Therefore, at the start of air conditioning, the slab has already reached a cold (warm) heat state that is equal to or higher than the set room temperature, so the "rise" is quick. That is, the precooling heat time becomes short.

Also, by using a ceiling panel with good heat radiation characteristics, heat radiation from the ceiling surface can be obtained, so a mild head cold foot heat effect is obtained during cooling, and cool air does not directly blow to the body and is comfortable. A comfortable air-conditioned space is obtained, and the heat radiation effect keeps the entire room close to an appropriate temperature during the night.

Further, since the cold / hot air is forcedly circulated from the cold / hot air passage by the blower, a uniform temperature distribution can be quickly obtained without heat retention, and it is possible to quickly respond to changes in the indoor temperature. Moreover, since the heat is stored in the slab, even if the heat capacity of the heat exchanger is reduced, the insufficient heat is replenished from the slab, and the surplus power at night can be effectively utilized.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an air conditioner of a building and its ceiling structure, and FIG. 2 is a vertical cross-sectional view showing another embodiment of the air conditioner of the building and its ceiling structure. 10 ... Floor slab, 12 ... Double floor 14 ... Suspension bolt, 16 ... Ceiling panel 18 ... Through hole, 20 ... Cold / hot air passage 22 ... Heat pump, 24 ... Duct 26 ... Blower, 28 ...... Suction port 30 ...... Ventilation path, 32 ...... Heat radiation panel

Claims (4)

[Claims] 1. Cold and hot air is provided on the upper and lower surfaces of the reinforced slab by constructing a double floor on the upper surface of the reinforced concrete slab and by constructing a ceiling panel suspended so as to obtain a gap between the slab and the lower surface. Along with forming a passage, a hot and cold air outlet is opened at an arbitrary position on the ceiling panel, and through holes communicating with the upper and lower surfaces of the slab are provided, and cold and hot air from a heat exchanger is supplied to the cold and hot air passage. Air conditioning system for buildings. 2. The ceiling structure used in an air conditioner for a building according to claim 1, wherein the ceiling panel is made of metal or non-metal plywood having excellent heat radiation. 3. The air conditioner for a building according to claim 1, further comprising a blower provided below the concrete slab to blow air from the cold / hot air passage toward the cold / hot air outlet. 4. The ceiling structure according to claim 2, wherein a blower which faces the room at the cold and hot air outlet of the ceiling panel is integrally attached to the panel.