JPH0440119Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air conditioner that blows conditioned air into a room from a rotating fan suspended from the ceiling.

(Prior art and its problems) The present applicant previously proposed an air conditioner shown in FIGS. 4 and 5. (Utility Application No. 62-56739) In FIGS. 4 and 5, 1 is a rotating fan, which is suspended from the ceiling 3 of the room 2. The upper end of the hollow rotating shaft 4 of this rotating fan 1 is sealed with a seal 1.
0 to one end of the duct 11 through the ceiling 3
It is rotationally driven via a reduction gear 6 by a motor 5 fixed to. The base ends of a plurality of (four in the figure) hollow wings 8 are fixed to a hollow boss 7 fixed to the lower end of the rotating shaft 4. As shown in FIG. 2, this hollow blade 8 is attached so as to form a predetermined depression angle θ with respect to a horizontal plane, and a large number of air outlets 9 are provided on both the front and back surfaces of the hollow blade 8.

A conditioned air generator 14 is installed outside the room 13,
The conditioned air generator 14 includes a compressor 15, an outdoor heat exchanger 16, an outdoor fan 17, an aperture 18, an indoor heat exchanger 19, an indoor fan 20, and the like. and,
The indoor heat exchanger 19 and the indoor fan 20 are connected to the duct 1
A damper 22 is provided at the opening 21 of the duct 11 to the room 2, and a damper 24 is provided to the opening 23 to the outside 13 of the duct 11.

During cooling operation, the damper 22 is opened and the damper 24 is closed.
is closed and the conditioned air generator 14 is operated. Then, the refrigerant discharged from the compressor 15 passes through the outdoor heat exchanger 16, the throttle 18, and the indoor heat exchanger 19 in this order and returns to the compressor 15, and at the same time, indoor air is passed through the opening 21 by the indoor fan 20. Duct 11
The heat exchanger 19 cools the air as it passes through the indoor heat exchanger 19. Then, this conditioned air passes through the rotary shaft 4 of the rotary fan 1, the boss 7, and the hollow portion of the plurality of hollow blades 8, and is blown out into the room 2 from a large number of air outlets 9. At the same time, by rotating the rotary fan 1 by the motor 5 via the reducer 6,
The indoor air is forced downward by the hollow blades 8 and flows into the room 2 along with the conditioned air blown out from the air outlet 9.
circulate within.

During heating operation, the refrigerant of the conditioned air generator 14 is circulated in the opposite direction to that during cooling operation.

During ventilation, the damper 22 is closed, the damper 24 is opened, and the indoor fan 20 of the conditioned air generator 14 is driven. Fresh air from the outdoors 13 is sucked into the duct 11 through the opening 23, and the indoor fan 20 and indoor heat exchange are performed. It flows through the container 19 and is supplied into the chamber 2 from the rotating fan 1.

(Problems to be Solved by the Invention) In the conventional air conditioner described above, during cooling operation, when the cold air generated by the conditioned air generator 14 flows from the duct 11 to the rotating shaft 4, it flows from these connections. Cold air leaks above the ceiling 3. Although a seal 10 is interposed in the connection, it has not been possible to completely prevent cold air from leaking from the connection. Since this connecting part is located above the ceiling 3, the cold air leaking from this connecting part is not useful for cooling the room 2. Therefore, not only does this result in a loss of cooling capacity of the air conditioner, but it also cools objects around the connection and causes dew condensation to form on its surface, and if the amount of dew condensation is large, the dew stains the ceiling 3. Or, there was a problem of dripping into the chamber 2.

(Means for Solving the Problems) The present invention was proposed to solve the above problems, and its gist is to provide a hollow rotary duct and a hollow rotary duct with a large number of air outlets. A rotating fan with wings is suspended from the ceiling of the room.
An air conditioner in which conditioned air generated by a conditioned air generator is guided to the hollow part of the hollow blade through a fixed duct fixed to the ceiling and the rotating duct and blown into the room from the air outlet, the fixed duct and the above An air conditioner characterized in that a connection part with a rotating duct is located indoors.

(Function) Since the present invention has the above configuration, the conditioned air is blown into the room from the connection part with the fixed duct.

(Example) One embodiment of the invention is shown in FIG.

Reference numeral 30 denotes a rotating fan, which is composed of a rotating duct 31 and a plurality of hollow blades 32 whose base ends are fixed to the rotating duct 31 and extend in the radial direction, and the hollow blades 32 are provided with a large number of air outlet ports 33. . A conditioned air generator 34 is fixed to the ceiling 35 and generates cold air during cooling operation and warm air during heating operation.
36 is a fixed duct fixed to the ceiling 35, and a horizontal part 36 is arranged on the upper surface of the ceiling 35 and extends horizontally.
a, and a vertical portion 3 extending downward through the ceiling 35.
Consisting of 6b. The lower end of this vertical portion 36b is slightly inserted into the rotary duct 31 from its upper end opening. 37 is a motor, and the horizontal part 36a
The rotating shaft 38 extends downward through the vertical portion 36b and the center of the rotating duct 31, and a rotating fan 30 is fixed to the lower end thereof.

Therefore, when the motor 37 is driven, the rotating shaft 3
A rotary fan 30 is rotationally driven via the rotary fan 8 . On the other hand, conditioned air such as cold air or warm air generated by the conditioned air generator 34 is sent to the horizontal portion 36 of the fixed duct 36.
a, enters the rotating duct 31 of the rotating fan 30 through the vertical portion 36b, then flows into the hollow portion of the hollow blade 31 from its base end, and is blown out into the chamber 39 from the numerous air outlets 33; . A part of this conditioned air is blown into the chamber 39 from a gap 40 between the fixed duct 36 and the rotating duct 31.

In the above embodiment, the diameter of the vertical portion 36b of the fixed duct 36 is the same as that of the rotating duct 31 of the rotating fan 30.
The lower end of the vertical portion 36b is slightly inserted into the upper end opening of the rotary duct 31, as shown in FIG.
and the diameter of the rotating duct 31, and the lower end opening of the vertical portion 36b and the upper end opening of the rotating duct 31 can be arranged so as to face each other with a slight interval therebetween, as shown in FIG. In this way, the diameter of the rotating duct 31 may be made smaller than the diameter of the vertical portion 36B, and the upper end of the rotating duct 31 may be inserted slightly into the vertical portion 36b from the opening at its lower end.

(Effects of the invention) In this invention, since the connection between the fixed duct and the rotating duct is placed indoors, the conditioned air leaking from the connection flows into the room and helps cool the room. No loss of capacity will result. Furthermore, even if cold air leaks from the connection, there is no object around the connection that is hotter than the temperature of the cold air, so no condensation occurs. Furthermore, since there is no need to provide a seal at the connection part, manufacturing becomes easier and costs are reduced.

[Brief explanation of the drawing]

1 to 3 are schematic cross-sectional views showing embodiments of the present invention, respectively. 4 and 5 show an example of a conventional air conditioner, FIG. 4 is a schematic system diagram, and FIG. 5 is a sectional view taken along the line - in FIG. 4. Room...39, Ceiling...35, Rotating fan...3
0, Rotating duct...31, Hollow blade...32, Air outlet...33, Conditioned air generator...34, Fixed duct...36, Horizontal part...36a, Vertical part...
36b, between connection parts...40.

Claims (1)

[Scope of utility model registration request] A rotary fan with hollow blades equipped with a hollow rotating duct and numerous air outlets is suspended from the ceiling of the room, and the conditioned air generated by the conditioned air generator is passed through the fixed duct fixed to the ceiling and the above-mentioned rotating duct. An air conditioner in which the air is guided into the hollow part of the hollow blade and blown into the room from the air outlet, characterized in that a connection part between the fixed duct and the rotating duct is disposed indoors.