JPS583Y2 - Multi-room air conditioner - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a multi-room air conditioner.

As shown in Fig. 1, the conventional system consists of an outdoor unit 1' that has a built-in compressor and an outdoor coil, and indoor units 1-2' and 3' that have built-in fans and indoor coils, respectively.
.

4', and pipes 5' and 6' that connect the outdoor unit 1' and the indoor units 2' to 4', and a plurality of chambers 7
',8'.

9', the outdoor unit 1' usually has a maximum capacity suitable for the load of 2 to 3 rooms, and the indoor unit 2' alone, and the indoor units 2' and 3'.
However, it had the following drawbacks.

(1) Each room requires an indoor unit, which requires space on the floor and walls.

(2) Each indoor unit requires its own piping, and the total length of the piping is long, which is disadvantageous in terms of loss of capacity, equipment, and construction costs.

(3) The number of joints required is equal to the number of indoor units, increasing the possibility of gas leakage.

(4) To switch refrigerant circuits, prevent refrigerant from stagnation, etc.
Many valves and control devices are required.

The purpose of this invention is to eliminate the drawbacks of the above-mentioned conventional devices.One indoor unit is installed on the corner ceiling of a room (or hallway) where multiple rooms are in contact with each other, and this is combined into one outdoor unit. If you open the shutter of the air outlet to the room you want to air condition and start the compressor, air will be blown out through the heat exchanger placed in the indoor unit and air conditioned. This is what I did.

The present invention will be explained based on the embodiments shown in FIGS. 2 to 8.

First embodiment (Fig. 2, Fig. 3, Fig. 4, Fig. 5).

(See Figure 6).

As shown in FIG. 2, there is one outdoor unit 1 that includes a compressor, an outdoor coil, etc., and a fan.

It consists of one indoor unit 2 containing an indoor coil, etc., and piping 3 connecting the outdoor unit 1 and the indoor unit 2, and the indoor unit 2 has a chamber 4 bordering three chambers 4, 5, and 6. It is suspended under the ceiling in the corner of
The chambers 5 and 6 are connected through ducts 39 and outlet grilles 7 (to be described in detail later).

Regarding the indoor unit 2, Fig. 3 is a perspective view of the unit, Fig. 4 shows a part of its upper cover, Fig. 5 (cross section A-A in Fig. 2) shows the internal structure, and Fig. 6 (B-- The drain receiver is shown in section B).

The indoor unit 2 consists of an upper cover 10 and a lower cover 11. The lower cover 11 has an indoor air intake port 12, and facing this is a fan 8 attached to the upper cover 10.
are arranged and protected by a fan guard 13.

The air outlets 14 on three sides of the upper cover 10 are connected to ducts 39 through sealing materials 24, respectively. It is connected to the blow-off grill 7 and connected to an adjacent room.

That is, in this embodiment, since the indoor unit 2 is installed on the corner ceiling of the room 4, the room 4 is connected to the room 5 through the duct 39 and the air outlet grille 7 shown in FIG. It communicates with room 6 by means of a duct and an outlet grille.

A U-shaped indoor coil 9 corresponding to each outlet grille 7 is disposed on the three sides where the outlet ports 14 are provided, and each outlet grille 7 has a shutter 15.
It can be opened and closed by a chain 16.

Furthermore, the upper cover 10 is provided with a rail 17 as shown in FIG.
are located on the upper three sides, and these are placed along guides 19 attached to the circumferential edges 18 in FIG. 5, so that the indoor unit 2 is suspended from the ceiling.

There is a service hole 25 (FIG. 3) on one side of the upper cover 10 without the air outlet 14, and the service cover 20 shown in FIG. 4 is attached to this hole.

By removing the service cover 20, the joint 21 and other electrical components 27 can be serviced, and the piping (Fig. 2) and wiring connected to the joint 21 are pulled out upward from the notch 26 above the service cover 20. , connected to the outdoor unit.

The lower cover 11 also has a drain receiver 22 as shown in FIG.
A drain hose is connected to the joint 23 at the tip.

To explain the operation, the refrigerant compressed (or compressed) during cooling (or heating) in the outdoor unit 11 passes through the piping 3 and evaporates (condenses and liquefies) in the indoor coil 9, removing heat from the air. (gives heat to the air), passes through the pipe 3 again, reaches the outdoor unit 1, and is compressed (evaporated and vaporized).

On the other hand, air entering from the indoor unit suction port 12 is accelerated by the fan 8, passes through the indoor coil 9, is cooled (heated) during cooling (heating), and then flows from the air outlet 14 into the duct 3.
9. Passing through the air outlet grille 7, the shutter 1 is opened.
5 is blown into the room to be air-conditioned.

In addition, in rooms that are connected to the indoor unit 2 but do not require air conditioning, the shutter 15 is closed by pulling the chain 16 (blocking the blowing of air for cooling (heating) to that room), and the It is possible to lower the equipment capacity by lowering the fan rotation speed and controlling the compressor capacity.

That is, according to the first embodiment, (1) only one indoor unit is required, and no space is required on the floor or wall.

(2) The total length of piping is shortened, equipment and construction costs are reduced, and capacity loss is reduced.

(3) Only one set of joints 21 is required to connect the pipe 3, reducing the possibility of gas leakage.

(4) Since only one refrigerant circuit is required, control is simplified.

(5) When installing the indoor unit, even if the ceiling is weak, the surrounding edge 18 shown in FIG. 4 can be used, so no special reinforcement is required.

(6) Even if there is a room that does not require air conditioning, the capacity can be controlled and the input can be reduced accordingly.

(7) It becomes easy to pass the pipe 3 through the ceiling, making the room cleaner.

(8) As shown in 39 in Fig. 4, the minimum number of ducts is required and the equipment cost is low.

(9) Since the compressor is located in the outdoor unit, the indoor unit is lightweight and easy to install.

(10) The open surface becomes the service surface (service cover 2
0), service is easy.

Second embodiment (see Figure 7).

In this embodiment, the drain receiver 2 shown in FIG. 6 of the first embodiment is used.
As shown in FIG. 7, a pump 27 is disposed inside the pump 2, and the pump 27 is driven by a motor 29 which is turned on and off by a liquid level switch 28, and discharges drain water from a discharge port 30.

Therefore, since the drain water can be discharged upward, the drain pipe can be passed through the attic along with the piping, making the room even cleaner.

Third embodiment (see Figure 8).

If there is a hallway 34 in the center of three adjacent rooms 31, 32, 33, the indoor unit 35 is suspended below the ceiling of the hallway 34, and the air outlet grill 36 is connected to the room 31 through the air outlet grill 36.
Conditioned air is blown out from 7 to the room 32 and then to the room 33 by a blowout grill (not shown), and the air is returned to the hallway 34 from the return grill 38 provided at the bottom of each room, and then sucked into the indoor unit 35 again. It looks like it's being swallowed.

Therefore, according to the third embodiment, (1) there is no indoor unit in any of the rooms to be air-conditioned, resulting in a clutter-free environment.

(2) Even if a return grill is installed, privacy can be maintained because the opposite side is a hallway.

In short, the present invention is to install two indoor units 2 connected to one outdoor unit with one set of piping to the corner ceiling of one room bordering a plurality of rooms, and to install the indoor units 2
An air intake port 12 and a fan 8 facing the air intake port 12 are arranged on the bottom surface of the , and a fan 8 that can be opened and closed is provided on each of the three side parts.
Discharge ports 14 and 7 each having a shutter 15 are provided, and a U-shaped heat exchanger 9 is provided for the discharge ports so as to face the three side surfaces. This is a multi-room air conditioner characterized by having a service hole 25 on the side.

In other words, in the present invention, as described in the embodiment, for example, when two out of three rooms are air-conditioned, when the discharge port shutters to those two rooms are opened and the compressor is started, the indoor unit The air in each room enters from the suction port and is accelerated by the fan, is conditioned by the indoor heat exchanger, and then blown out into the two rooms from each discharge port with an open shutter. ,
(i) Unlike conventional models, only one indoor unit is required;
Space, piping, and ducts are also greatly shortened, and the refrigerant circuit is reduced to just one circuit, making control easier.

(ii) Furthermore, if there is a room that does not require air conditioning, the discharge port shutter of that room can be closed, so that the capacity can be controlled, and the manpower can be reduced accordingly.

(iii) Furthermore, unlike the conventional method, it is not necessary to install an indoor unit in each room, and the piping can be routed through the ceiling, making the room cleaner.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of a conventional multi-room air conditioner;
Fig. 2 is a schematic perspective view showing the entire first embodiment of the present invention, Fig. 3 is a perspective view of the upper cover and lower cover of the indoor unit in Fig. 2, viewed from below. A perspective view of the upper cover seen from above, FIG. 5 is a partial vertical sectional view taken along line A-A in FIG. 2, and FIG.
7 is a longitudinal sectional view taken along the line B, FIG. 7 is a partial vertical sectional view of another embodiment replacing the drain receiver in FIG.
The figure is a perspective view showing another embodiment in which the indoor unit is suspended from the ceiling of a hallway in the center of adjacent rooms. In the figure, 1...outdoor unit, 2...
...Indoor unit, 3...Piping, 4,5.6.
...Multi-chamber, 10...Under the upper cover, 11.
...Lower cover, 12...Suction port, 8.
...Fan, 14...3 side air outlet,
7... In the outlet grill, the outlet, 15...
・Shutter, 9...Heat exchanger, 25...
...Service hall.

Claims (1)

[Scope of utility model registration request] One outdoor unit and one indoor unit connected by one set of piping are installed on the corner ceiling of one room where multiple rooms are bordered, and there is an air intake port and an air intake port on the bottom of the indoor unit. A fan is arranged facing the suction port, and a discharge port equipped with a shutter that can be opened and closed is provided on each of the three side parts, and a U-shaped fan is provided facing the three side faces of the discharge port. A multi-room air conditioner characterized in that a heat exchanger is provided and a service hole is provided on each side other than the above three sides.