JPH0759997B2 - Indoor ventilation air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an indoor ventilation cooling / heating device.
More specifically, the present invention relates to an improved indoor ventilation cooling / heating system that can reduce heat loss and perform efficient ventilation in a ventilation system using a central air-conditioning system for a house.

(Background Art) Conventionally, all rooms such as living rooms, kitchens, bathrooms, etc. are
It has been difficult to perform heating and cooling with one air conditioner from the viewpoint of the capacity and economic efficiency of the current cooling and heating machines.

On the other hand, in a house with few windows such as an apartment house,
Although there is relatively consideration for indoor air supply,
As for the exhaust gas, it is the actual situation that the exhaust gas is only partially exhausted by the exhaust from the few windows or the exhaust fan or the exhaust pipe. For example, as shown in FIG. 6, conventionally, a fan (a) is provided indoors, and a living room (a),
Although air is supplied to the kitchen (c) and the sanitary part (d) through the air supply pipe, the exhaust gas from the sanitary part (d) such as the bathroom and toilet is only exhausted through the exhaust pipe. In space, it is often only exhausted by the kitchen fan or through the window.

However, in recent years, the airtightness of houses has improved significantly, and it has become necessary to adequately ventilate living rooms and even corridors. Therefore, in air conditioning by indoor cooling and heating, more planned ventilation is required.

However, under the present circumstances, it is difficult to perform planned indoor ventilation and realize indoor heating and cooling in all rooms while reducing the load on the air conditioners. Current air conditioners include:
One unit does not have the ability to heat and cool the entire indoor area, and in the current housing structure, it is often difficult to install an exhaust duct for indoor ventilation in a narrow space above the ceiling due to intersections of the ducts.

Therefore, as an alternative to the conventional air conditioning and heating system for houses, it has been desired to realize an indoor ventilation air conditioning system that is more efficient and effectively uses the house space.

The inventor of the present invention has diligently studied in order to solve such a problem, uses the space of the indoor down-ceiling part as an air supply passage, and collects the exhaust gas of all indoor rooms to the sanitary part for ventilation. It was found that exhausting with a duct is effective. Also, although the amount of air required for indoor purification and ventilation is small, on the other hand, in order to prevent uneven temperature in the room, the circulating air volume of the indoor air must be increased,
It has been found that it is advantageous to separate the air for purification and ventilation from the air for circulation, and the load of the air conditioner can be reduced along with this division.

The present invention has been made in view of such circumstances.

(Object of the Invention) From the above circumstances, the present invention improves the drawbacks of the conventional indoor heating and cooling apparatus and the ventilation apparatus, and provides efficient ventilation,
It is an object of the present invention to provide an improved indoor ventilation heating / cooling system which has a low heat loss and can reduce the load on the cooling / heating machine.

More specifically, the present invention utilizes an indoor down-ceiling space and uses a heat exchanger and an air conditioner to reduce heat loss,
It is an object of the present invention to provide an indoor ventilation cooling and heating device that enables efficient air circulation and ventilation.

DISCLOSURE OF THE INVENTION The indoor ventilation cooling / heating apparatus of the present invention supplies air from a heat exchanger communicating with the outside to the room through the inside space of the air conditioner and the down ceiling, and the air from each room is sanitary part. In an indoor ventilation cooling and heating apparatus in which a supply / exhaust air circulation path for collecting and exhausting through a heat exchanger is formed, a blower for circulating a part of the air without exhausting the air is provided.

The indoor ventilation cooling / heating device of the present invention will be described with reference to the accompanying drawings.

FIG. 1 illustrates the whole apparatus of the present invention as a plan view. For example, as shown in Fig. 1,
A heat exchanger 1 that communicates with the outside is provided near an outer wall such as a front door of a house, and the air sucked from the outside is heat-exchanged with the indoor exhaust, and is guided to the air conditioner / heater 2. In this cooling / heating machine 2, the indoor circulating air from the suction port of the down ceiling 3 is also sucked or not sucked, and the heat-exchanged supply air is temperature-adjusted and then blown out into the internal space of the down ceiling 3. The cooled or warmed air is supplied to the room 4 from the side wall of the descending ceiling 3.
At this time, the air that circulates without passing through the air conditioner 2 as the air for circulation also passes through the descending ceiling 3 and similarly in each room 4
Supply air to.

Part of the exhaust gas from the room is collected in the sanitary section 6 through the corridor 5 and sent to the heat exchanger 1 through the exhaust duct 7. Exhaust from most other rooms is
It is sucked into the inlet of the down ceiling 3 above the corridor 5 and circulates as recirculation air into each room 4 through the internal space of the down ceiling 3.

FIG. 2 exemplifies, as a cross section, a structure for supplying and exhausting the interior 4 of the portion A shown in FIG.

The air supply is circulated in the space of the descending ceiling 3 which is the air supply passage,
It is guided to the room 4 through an inlet 8 provided on the side wall of the down ceiling 3. On the contrary, the air in the room 4 is discharged to the corridor 5 from the outlet 10 provided in the door or the partition 9 that separates the room 4 from the corridor 5. A part of the air discharged to the corridor 5 is guided to the sanitary portion 6, where it is concentrated and discharged through the exhaust duct 7. Most of the other air is sucked from the corridor 5 into the air intake for circulation of the down ceiling 3.

FIG. 3 shows an example of the installation of the heat exchanger 1, the cooling / heating device 2, the inlet for circulating air, and the blower for circulation. For example, as shown in FIG. 3, the heat exchanger 1 and the air conditioner 2 are installed on the down ceiling 3, and the air intake 11 for circulation and the blower for circulation are provided on a part of the down ceiling 3.
Provide 12

The indoor circulating air collected from the corridor 5 is the air intake port 11
Lead to blower 12. By operating the switching / adjusting dampers 13 and 14 connected to the blower 12, circulating air is circulated through the down ceiling 3 into the room 4 through the cooling / heating machine 2 or without passing through it.

Open the switching / adjustment damper 13, and open the other damper 14
When is closed, all the air from the air intake 11 for circulation is sent to the air conditioner 2. When the opening and closing of the dampers 13 and 14 are reversed, the entire amount is circulated as it is without passing through the cooling and heating machine 2.

Alternatively, a part of the air can be passed through the air conditioner / heater 2 by controlling the open state of both the dampers 13 and 14.

When the circulating air is not passed through the air conditioner / heater 2, for example, as shown in FIG. 4, the circulating air from the suction port 11 is sent to the room by the blower 12 completely different from the air blown out from the air conditioner / heater 2. be able to.

For example, with respect to the air volume of supply and exhaust when using the indoor ventilation cooling and heating apparatus illustrated above, the following cases can be illustrated. That is, when the indoor about 30-40 square meters indoor warm-air heating, when the air volume of about 600 meters ³ / hr is required, in the conventional indoor air conditioner, the 600 meters ³ /
It is necessary to warm up the entire hr air, actually 1
It was difficult to do this with a single air conditioner. However, in the case of the device of the present invention, attention is paid to the fact that the air volume actually required for indoor ventilation is about 100 m ³ / hr. Therefore, as shown in FIG. 5 (a) showing the flow of air, the exhaust gas I through the heat exchanger 1 is
The same amount of 100 m ³ / hr as the supply air II is enough, and even if 500 m ³ / hr of indoor warm circulating air III is passed through the air conditioner / heater 2, the heating load is significantly reduced compared to the conventional method. .

Further, as shown in FIG. 5 (b), when the whole amount of the circulating air III is circulated without passing through the air conditioner / heater 2, only the supply air 100 m ³ / hr that has been heat-recovered by the heat exchanger 1 in advance. You can heat. Alternatively, as shown in Fig. 5 (c), 100 m ³ / hr of part IV of the circulating air III is warmed up, and the remaining 400 m ³ / hr
Can be circulated as it is in the room.

In any of these cases, the air volume necessary to eliminate the temperature unevenness in each room in the room is sufficiently secured. Therefore, while watching the room temperature, the air conditioner 2 for the circulating air III can be appropriately used.
It is possible to control the rate of air blown to the air conditioner and to control the load on the air conditioner 2.

Of course, the above air volume is not particularly limited.
It is only an example as a general guide. Further, it goes without saying that the air conditioner may also have a function of either cooling or heating.

(Effects of the Invention) In the indoor ventilation air conditioner of the present invention, as described in detail above, since the down ceiling portion is used without using the air supply duct leading to each room, the piping at the ceiling portion is used. There is no situation where it is impossible, and because the amount of air required for indoor ventilation is small and the circulating air can be made large, heat recovery by the heat exchanger and air conditioning control of the air conditioner can be facilitated, and air conditioning The air-conditioning load on the machine is significantly reduced compared to the past.

Central air conditioning in the house is realized by one air conditioner. Efficient ventilation and cooling / heating are realized without uneven air conditioning in the room.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an indoor ventilation cooling / heating device of the present invention. FIG. 2 is a partial cross-sectional view showing a structure for air supply and exhaust of each chamber. FIG. 3 is a cross-sectional view showing an installation example of a heat exchanger, an air conditioner and a blower for circulating air. FIG. 4 is a sectional view showing another example of this installation. FIGS. 5 (a), (b) and (c) are conceptual diagrams showing examples of air flows for supply and exhaust and circulation, respectively. FIG. 6 is a plan view showing a conventional ventilation device. 1 ... Heat exchanger, 2 ... HVAC, 3 ... Down ceiling, 4
…… Indoor, 5 …… Lower corridor, 6 …… Sanitary section, 7 ……
Exhaust duct, 8 ... Inlet, 9 ... Partition, 10 ... Outlet, 11 ... Air inlet, 12 ... Blower, 13, 14 ...
Switching / adjustment damper.

Claims (4)

[Claims] 1. A supply of air from a heat exchanger that communicates outdoors to a room through an internal space of a cooling / heating machine and a ceiling, and the air from each room is collected in a sanitary section and exhausted through the heat exchanger. In an indoor ventilation cooling / heating apparatus having a supply / exhaust air circulation path, an indoor ventilation cooling / heating apparatus is provided with a blower that circulates a part of air without exhausting the air. 2. The indoor ventilation cooling / heating apparatus according to claim 1, wherein the circulating air is passed through a cooling / heating machine and circulated indoors. 3. The indoor ventilation cooling / heating device according to claim 1, wherein the circulating air is circulated in the room without passing through the cooling / heating machine. 4. The indoor ventilation cooling / heating apparatus according to claim 1, further comprising a switching / adjusting damper for sending a part or all of the circulating air to the cooling / heating machine.