JPH11108394A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system at low running cost and installation cost by which a whole building can be air conditioned and a comfortable residential environment can be maintained. SOLUTION: A space between an inner wall 18 and an outer wall 12 is used as a ventilating passage 19 through which an underfloor communicates with a part in the back of a ceiling. Then, indoor air is supplied to the underfloor in the ventilating passage 19 so that the pressure of the ventilating passage 19 is high. At the same time, air conditioners 20 and 22 are operated to supply conditioned air to the ventilating passage 19 so that the pressure of living rooms 14 and 16 becomes negative. Air in the ventilating passage 19 is guided to the living rooms 14 and 16 from the cold air outlet holes 32 of the ceilings 14a and 16a based on atmospheric pressure difference to air condition the rooms.

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 for a building such as a house.

[0002]

2. Description of the Related Art In recent years, from the viewpoint of energy saving and the like, housing construction employing a highly airtight and highly heat-insulating structure has been carried out, and accordingly, various air conditioning systems used for houses have been proposed. Conventionally, an air conditioner used as a general air conditioning system is installed in each room, and performs heating and cooling in each room.

[0003]

However, performing heating and cooling in each room means that the temperature in each room is different.
In terms of comfort of the living environment, it is not preferable. On the other hand, there is an air conditioning system in which the entire building is intensively heated and cooled, but there is a problem that energy loss is large and installation costs are relatively high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and can maintain a comfortable living environment, can simultaneously achieve energy savings, and can be installed at a low cost. It also aims to provide an inexpensive air conditioning system.

[0005]

The present invention solves the above-mentioned problems as follows. (1) The outer wall has an air-tight insulation structure, the space between the inner wall and the outer wall is a ventilation passage for air conditioning communicating from under the floor to the ceiling, and the indoor air is converted into conditioned air by an air conditioner. By blowing this conditioned air and room air into the ventilation passage, the inside of the ventilation passage is set to a higher pressure than the room,
The air in the ventilation passage is blown into the room by the pressure difference.

(2) The outer wall has an air-tight insulation structure, the space between the inner wall and the outer wall is a ventilation passage for air conditioning communicating from under the floor to the ceiling, and at the time of cooling, indoor air is passed under the floor of the ventilation passage. When the air is blown into the ventilation passage, the inside of the ventilation passage is set to a high pressure. At the same time, the room air is blown into the ventilation passage as the conditioned air by the cooling operation of the air conditioner, and the cool air is blown into the room from the ceiling outlet through the air pressure difference.

(3) The outer wall surface has an air-tight insulation structure, the space between the inner wall and the outer wall is a ventilation passage for air conditioning communicating from under the floor to the ceiling, and air under the ceiling is heated under the floor during heating. Simultaneously with the introduction, the air conditioner installed on the ceiling is heated and the room air is introduced as air-conditioned air under the floor in the ventilation passage to warm the floor, and the room is heated by radiant heat from the floor .

(4) In the above item (3), the warm air introduced under the floor in the ventilation passage is blown into the room through a blow hole on the floor near the window.

[0009]

Next, an embodiment of an air conditioning system according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic view of a house to which the air conditioning system of the present embodiment is applied.
It shows a part where the indoor spaces on the floor and the second floor are connected, and is a state of the system at the time of cooling.

As shown in FIG. 1, a housing body is supported on a foundation (10). From outer wall (12) to roof (13), under floor (15)
, Heat insulating materials such as urethane foam are attached, and the whole house has an air-tight insulating structure.

The outer wall (12) and the living rooms (14, 16) on the first and second floors
The space between the inner wall (18) and the ceiling (14a) (16a) and the floor (16b) is a ventilation passage (1
9). Air conditioners (20) and (22) are installed on the ceiling (14a) (16a) of each living room (14) (16), and the air intake (2
0a) and (22a) are installed facing the indoor side. air conditioner
The air outlets (20b) and (22b) of (20) and (22) are in each room (14) (1
It is directed into the ventilation passage (19) behind the ceiling in (6), and blows out the heat exchanged conditioned air into the ventilation passage (19). The air conditioners (20) and (22) are connected to an outdoor unit (not shown) installed outside.

A duct (26) piped behind the ceiling of the living room (14) on the second floor has a suction port (24) for sucking indoor air.
Is provided. The duct (26) is provided with a suction port (25) for sucking air behind the ceiling in the ventilation passage (19). In other words, the duct (26) has a suction port (25) for sucking air behind the ceiling and a suction port for sucking air in the living room (14).
(24), and as described later, air can be introduced into the duct (26) from one of the suction ports according to each operation state of heating or cooling.

That is, the duct (26) is provided with a switching valve (28), and the switching valve (28) allows the suction port (2
4) Insert the duct (2
6) Communication can be switched.
As a result, the room air of the living room (14) (16) or the ventilation passage (19)
The air above the ceiling in the inside can be selectively sucked into the duct (26) according to each operation state of heating or cooling. In the middle of the duct (26), a suction fan (30) is installed, and the outlet (27) of the duct (26)
Is installed toward the underside of the floor in the ventilation passage (19).

Next, the operation of the air conditioning system according to this embodiment during cooling will be described.

At the time of cooling, by switching the switching valve (28), the duct (26) is communicated with the suction port (24) side, and the room air of the living rooms (14, 16) is drawn from the suction port (24) through the fan (24). 30) and ventilated passageway (1) through duct (26)
9) Guide under the floor inside. At the same time, when the air conditioners (20) and (22) are operated for cooling, the air conditioners (20) and (22) also draw in indoor air, and blow out the heat-exchanged air to the ceiling in the ventilation passage (19). become.

Since the space above the ceiling and under the floor are both connected as a part of the ventilation passage (19), the air ventilation passage (19)
Due to the introduction into the inside, the air pressure in the ventilation passage (19) is higher than that in the room, while the air pressure in the living rooms (14, 16) is lower, and the pressure is negative with respect to the ventilation passage (19).

As a result, the cool air is cooled by the air pressure difference to the ceiling (1
Living room (14) through the cool air outlet (32) drilled in 4a)
(16) The air is blown out vigorously, and the conditioned air is supplied to the room. Note that the momentum of the cool air blowout is constant regardless of the position of the blowout hole (32), so that the cooling temperature can be adjusted by the size and number of the blowout holes. This allows the first and second floor living rooms to be used during cooling.
(14) The temperature of (16) can be kept constant, and comfortable cooling with an appropriate wind speed can be performed.

The present embodiment is for air-conditioning an indoor space such as a stairwell communicating with the first and second floors, but is applied to a room where the first and second floors are not connected. It is also possible. In this case, a cool air outlet may be provided for each room.

Next, the operation when the heating operation is performed will be described.

FIG. 2 is a view similar to FIG. 1 showing the flow of air during the heating operation. As shown in FIG. 2, in the heating operation, the switching valve (28) is switched so that the duct (26) communicates with the back side of the ceiling of the ventilation passage, and the room air behind the ceiling is drawn into the fan (25) from the suction port (25). The air is sucked by (30), and is guided under the floor in the ventilation passage (19) through the duct (26). At the same time, the air conditioner (20) is operated for heating, and the room air warmed by the heat exchange is passed through the ventilation passage (19) through the duct (26).
Guide under the floor inside.

The room air guided to the underfloor portion of the ventilation passage (19) warms the floor (16b) of the living room (16). It will be heated by the radiant heat from 16a). That is, the air conditioning system of the present embodiment
Functions as floor heating during heating.

At this time, since the heating capacity of one air conditioner is sufficient, only the air conditioner (20) on the second floor can be operated and the air conditioner (22) on the first floor can be in a halt state. Energy is minimal.

In the heating operation, a warm air outlet (not shown) is formed in the floor (16b) below the window of the living room (16), and a part of the warm air is discharged from the outlet. The air may be blown out from the ventilation passage (19) by the pressure difference. In this way, it is possible to reduce the temperature unevenness in the room caused by the transmission of the cool air from the window, and more comfortable heating is possible. In the present embodiment, the duct
Although the warm air is introduced under the floor through (26), the invention is not limited to this, and the convection of the air is forcibly formed in the ventilation passage (19), and the convection is used to guide the warm air under the floor. You may do so.

As described above, according to the air-conditioning system of this embodiment, even when air-conditioning a plurality of rooms, it is possible to air-condition the entire building without installing individual air-conditioners, thereby reducing the installation cost of the air-conditioning system. Reduction can be achieved.

[0026]

【The invention's effect】

(A) According to the first aspect of the present invention, the inside of the ventilation passage is set to a higher pressure than the room, and the conditioned air is blown into the room from the inside of the ventilation passage by the pressure difference. For this reason, even when air-conditioning of the whole building is performed, it is not necessary to separately install an air conditioner for each room, and it is possible to reduce equipment costs.

(B) According to the second aspect of the present invention, at the time of cooling, the room air is blown into the underfloor of the ventilation passage to make the inside of the ventilation passage high pressure, and at the same time, the cool air is blown into the ventilation passage and the cool air is blown out from the ceiling outlet. The air is blown into the room by the pressure difference. For this reason, when the whole building is cooled, the temperature of each room can be kept uniform, and a cooling environment with a comfortable wind speed can be obtained in the whole building.

(C) According to the third aspect of the present invention, at the time of heating, air behind the ceiling is introduced under the floor, and warm air is introduced under the floor by the air conditioner, and the room is heated by radiant heat from the floor. Like that. For this reason, the air-conditioning system can be used as floor heating, and heating can be performed without a wind speed, contrary to cooling.

(D) According to the invention of claim 4, warm air introduced under the floor in the ventilation passage is blown into the room through a blowout hole on the floor near the bottom of the window. For this reason, the temperature unevenness in the room during floor heating can be reduced, and the comfort during heating is improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a house to which an air-conditioning system according to an embodiment is applied, particularly showing portions where indoor spaces on the first and second floors such as a stairwell and a staircase are connected, and shows a state during cooling. FIG.

FIG. 2 is a cross-sectional view showing a state during heating.

[Explanation of symbols]

 (10) Foundation (12) Exterior wall (13) Roof (14) Room (14a) Ceiling (15) Under floor (16) Room (16a) Ceiling (16b) Floor (19) Ventilation passage (20) (22) Air conditioner (20a) (22a) Air inlet (20b) (22b) Air outlet (24) (25) Inlet (26) Duct (27) Outlet (28) Switching valve (30) Suction fan (32) Cold air outlet Hole

Claims (4)

[Claims] 1. An outer wall having an air-tight insulation structure, a space between an inner wall and an outer wall being a ventilation passage for air conditioning communicating from under the floor to above the ceiling, and air in the room being conditioned by an air conditioner. An air conditioning system characterized in that the conditioned air and the room air are blown into the ventilation passage so that the pressure in the ventilation passage is higher than that of the room, and the air in the ventilation passage is blown into the room by a pressure difference. 2. An outer wall having an airtight and heat-insulating structure, a space between the inner wall and the outer wall being a ventilation passage for air conditioning communicating from under the floor to the ceiling, and at the time of cooling, room air is passed under the floor of the ventilation passage. The inside of the ventilation passage is inflated to a high pressure, and at the same time, the room air is blown into the ventilation passage as the conditioned air by the cooling operation of the air conditioner, and the cool air is blown into the room by the pressure difference from the outlet of the ceiling. Air conditioning system. 3. The outside wall has an air-tight insulation structure, the space between the inside wall and the outside wall is an air-conditioning ventilation passage communicating from under the floor to the ceiling, and air under the ceiling is introduced under the floor during heating. At the same time, the air conditioner installed on the ceiling is heated and the room air is introduced as air-conditioned air under the floor in the ventilation passage to warm the floor, and the room is heated by radiant heat from the floor. An air conditioning system characterized by the following. 4. The air conditioning system according to claim 3, wherein the warm air introduced under the floor in the ventilation passage is blown into the room through a blowing hole on the floor near the window.