JPH0827033B2 - Air conditioner - 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 conditioner suitable for application to small and medium-sized buildings.

[0002]

2. Description of the Related Art In small and medium-sized buildings, an air conditioner is often installed in each room for individual air conditioning. in this case,
As shown in FIG. 9, a floor-standing air-cooled heat pump package or fan coil unit 50 is installed in the perimeter zone PZ, and heat from a central heat source (not shown) causes
The temperature rise due to direct sunlight is suppressed. Here, the temperature is simply controlled by passing the indoor air through the heat exchanger 52 by the blower 51, and the humidity is not controlled.

For the interior zone IZ,
The air handling unit 60 is installed, the return air is returned through the return air opening 61a and the return air system duct 61, and after cleaning through the filter 62, the humidifier 63 is used for humidification while the fan 64 is used for the air supply system duct. It blows out into interior zone IZ through 65 and air supply opening 65a. Here, a part of the return air is exhausted to the outside through the fan 66, and the outside air is taken into the air handling unit 60 by the fan 67.

[0004]

However, the representative example shown in FIG. 9 has the following problems. (1) Since the fan coil unit 50 is provided near the outer wall, the upper space of the fan coil unit 50 cannot be effectively used, and it becomes an obstacle when a desk or the like is desired to be placed there. (2) When a small room or a partition is provided in the perimeter zone PZ, the supply of fresh air (outside air) becomes insufficient. (3) Since the central heat source is stopped after hours, air conditioning cannot be performed. (4) In the winter, in the interior zone IZ, the cooling operation is performed due to the exhaust heat of the OA equipment.
In the heating operation of the perimeter zone PZ, mixing loss with the return air from the interior zone IZ occurs, resulting in a large energy loss. (5) Since maintenance is performed at two places, it takes time and effort.

Therefore, an object of the present invention is to solve these problems all at once.

[0006]

SUMMARY OF THE INVENTION The above problems are solved by supplying and returning air to and from preferably a first air conditioner, for example, an air-cooled heat pump package and a second air conditioner, such as an air handling unit, provided in the same room. At least return air of the air is provided, and the air handling unit is configured to supply and return air to the interior zone of the target room, separately from the air-cooled heat pump package. It is possible to solve the problem by configuring so that air and return air are supplied to the perimeter zone, and the return air system from the air-cooled heat pump package and the air handling unit can be switched to each other via the switching means.

[0007]

According to the present invention, the following operational effects (a) to (e) are exhibited in correlation with the problems (1) to (5). (A) As shown in FIGS. 2 and 3, it is not necessary to install an air conditioner in the perimeter zone PZ, and the indoor space can be effectively used. (B) Even when a small room or a partition is provided in the perimeter zone PZ, air is supplied to the perimeter zone PZ, so that fresh air (outside air) and conditioned clean air can be supplied. (C) Outside the hours, the air-cooled heat pump package 1 is operated to supply air also to the interior zone IZ, so that air conditioning can be performed on the area. (D) O in the interior zone IZ, such as during winter
Since the exhaust heat from the device A is applied to the air-cooled heat pump package and the cool air in the perimeter zone PZ is applied to the air handling unit, there is no mixing loss found in the conventional example, and energy can be saved. (E) Since the devices are arranged in one place, they are excellent in maintainability.

[0008]

EXAMPLES The present invention will be described in detail with reference to the examples shown in FIGS. An air-cooled heat pump package 1 as a first air conditioner, an air handling unit 2 as a second air conditioner, and a return air chamber 3 provided with a filter 3a thereof are provided in a room 1 to be air-conditioned in a small building or the like. Has been.

A switching box 4, which will be described in detail later, is provided at the upper part of these, for example, and the return air installed in the ceiling having the return air ports 5a and 6a from the perimeter zone PZ and the interior zone IZ, respectively. Duct 5,
6 are connected, and the air supply ports 7a and 8a are connected, respectively.
The air supply ducts 7 and 8 installed in the ceiling having are connected.

On the other hand, the air-cooled heat pump package 1 is
Has an intake port 10 adjacent to the filter 3a,
A humidifier 11, a heat exchanger 12, a fan 13, and a drain up pump 14 are provided inside thereof. Similarly, the air handling unit 2 also has an intake port 20 in which a humidifier 21, a heat exchanger 22, a fan 2 are provided.
3, and a drain up pump 24.

As shown in detail in FIG. 1, the heat exchanger 12 of the air-cooled heat pump package 1 is connected to an outdoor unit 15 having a compressor and a blower.
Operates on the basis of a temperature signal from a temperature detector 30 installed in the perimeter zone PZ. The heat exchanger 22 of the air handling unit 2 is configured to operate based on a signal from the temperature detector 31 provided in the interior zone IZ. The humidifiers 11 and 21 operate by the hygrometers 32 and 33 installed in each zone.

In the normal operation state, the supply air and the return air from the air-cooled heat pump package 1 are supplied to the perimeter zone PZ, and the supply and the return air by the air handling unit 2 are supplied to the interior zone IZ. . However, the air supply system and the return air system can be switched by the switching box 4.

A detailed structure of the switching box 4 and an operation example thereof are shown in FIGS. At the front side, a return air port 41 communicating with the return air duct 5 is opened at the lower side of the air-cooling heat pump package, and an intake port 42 of outside air taken in by the fan 50 (see FIG. 2) is opened at the upper stage. Return air port 4 communicating with return air duct 6
3, the intake port 44 for the outside air taken in by the fan 50 is opened in the upper stage, and the exhaust ports 45, 46 are formed on the respective sides to connect the intake ducts 7, 8. Reference numeral 51 in FIG. 2 is an exhaust fan.

On the other hand, the inside of the switching box 4 is partitioned by the partition walls 47 only in the left and right in the upper stage, and in the lower stage in the left and right and in the depth direction, the partition walls 48, 49.
The partition wall 4 is separated by
Dampers 61, 62, 63, and 64 for attaching the spaces to each other are attached to the parts 8 and 49, respectively.

In the apparatus constructed as described above, in the normal operation state, as shown in FIG.
1, 62 are opened and dampers 63, 64 are closed, and the return air and the outside air on the perimeter side communicate with the return air chamber 3 through the communication port 7
1 air-cooled heat pump package 1
Leading to. Further, the return air and the outside air on the interior side are sent into the return air chamber 3 through the communication port 72 and reach the air handling unit 2. Air supply from the air-cooled heat pump package 1 is supplied to the perimeter zone PZ, and air supply from the air handling unit 2 is supplied to the interior zone IZ.

On the other hand, in the case of overtime operation, since the central heat source is stopped, the temperature and humidity of the interior zone IZ cannot be controlled. In this case, the bypass damper 80 shown in FIG. 5 is opened, the damper 81 is closed, the air-cooled heat pump package 1 is operated, and air is also supplied to the interior zone IZ. This makes it possible to air-condition the entire room.

On the other hand, when the perimeter zone PZ is to be heated and the interior zone IZ is to be cooled, it is effective to put exhaust heat from the OA equipment in the interior zone IZ onto return air. Therefore, as shown in FIG. 7, the dampers 61 and 62 are closed and the dampers 63 and 64 are opened,
After the return air passing through the return air port 44 of the interior zone IZ is guided to the lower stage, it is introduced to the air-cooled heat pump package 1 through the valve 64, together with the outside air, through the communication port 71 and the return air chamber 3. Further, cool air (which becomes a heating load) in the perimeter zone PZ is recovered as return air from the return air port 41, and the return air is guided to the air handling unit 2 through the valve 63 and the outside air through the communication port 72 and the return air chamber 3. To drive. By switching the return air system, the above-mentioned mixing loss can be reduced and energy saving can be achieved.

In the present invention, in addition to the switching mode of the above-described embodiment, other modifications within the scope of not changing the concept are naturally within the scope of the present invention.

Further, in the above embodiment, the bypass duct 80 is opened and closed with respect to the perimeter zone PZ and the interior zone IZ so as to correspond to the overtime operation. However, separately from the air-cooled heat pump package 1 to the interior zone IZ. You may attach an air supply duct to it. Further, it is effective to install the return air chamber 3 between the air-cooled heat pump package 1 and the air handling unit 2 so as to guide the purified air to both of them, but it is effective in terms of installation space, etc. The return air chamber and the filter may be incorporated in the air-cooled heat pump package 1 and the air handling unit 2. The above example is an example in which an air-cooled heat pump package is used as the first air conditioner and an air handling unit is used as the second air conditioner, but the type is not limited.

[0020]

As described above, according to the present invention, in terms of installation space, overtime operation, and suppression of mixing loss,
Demonstrates excellent effects.

[Brief description of drawings]

FIG. 1 is a schematic system diagram of an example of the present invention.

FIG. 2 is a schematic diagram of the same.

FIG. 3 is a perspective view of an installation example.

FIG. 4 is a front view of a switching box.

FIG. 5 is a front view of the inside of a switching box.

FIG. 6 is a horizontal cross-sectional view of the flow of air during normal operation.

FIG. 7 is a horizontal cross-sectional view of the air flow in an operation example in winter.

FIG. 8 is a schematic perspective view of a switching box.

FIG. 9 is a schematic diagram of a conventional example.

[Explanation of symbols]

1 ... Air-cooled heat pump package, 2 ... Air handling unit, 3 ... Return air chamber, 4 ... Switching box, 5, 6 ... Return air duct, 7, 8 ... Air supply duct.

Claims (2)

[Claims] 1. A first air conditioner and a second air conditioner provided in the same room.
An air conditioner and a means for switching at least the return air among the supply air and the return air, and are configured to perform the supply air and the return air by the first air conditioner to the interior zone of the target room, Is configured to individually supply and return air from the second air conditioner to the perimeter zone, and from the first air conditioner and the second air conditioner via the switching means. An air conditioner characterized in that the return air system can be switched between each other. 2. An air-cooling heat pump package and an air handling unit provided in the same room are provided with a means for switching at least the return air from the air supply and return air fields in the vicinity thereof, and supply and return air by the air handling unit is provided. It is configured to be performed on the interior zone of the target room, and separately from this, configured to perform the supply and return air from the air-cooled heat pump package to the perimeter zone, via the switching means, An air conditioner characterized in that the return air system from the air-cooled heat pump package and the air handling unit can be switched mutually.