JP2552551Y2 - Ceiling-mounted 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 a ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art An example of a conventional ceiling-mounted air conditioner is shown in FIG. Case body 2 buried in ceiling 1
A heat exchanger 7, a drain pan 10, a motor 5, a turbofan 6, a bell mouth 12 and the like are built in the inside. A ceiling panel 8 is attached to a lower portion of the case main body 2, a suction port 3 is formed in a central portion thereof, and an air outlet 4 is formed adjacent to the suction port 3.

During operation of the air conditioner, refrigerant from an outdoor unit (not shown) circulates through the heat exchanger 7, and the turbo fan 6 is driven by the motor 5. Then, the room air in the room 9 passes through the suction grille 11 and the filter 13 from the suction port 3 and is guided by the bell mouth 12 to be sucked and urged by the turbo fan 6. Then, it is cooled or heated in the process of flowing through the heat exchanger 7 to be conditioned air and blown out of the outlet 4 into the chamber 9.

[0004]

[Problem to be Solved by the Invention] As the case body 2 becomes thinner, the bell mouth 12 becomes smaller and the flow of the air sucked into the turbo fan 6 by the bell mouth 12 cannot be sufficiently rectified. However, there is a problem that the angle of attack of the air at the inlet of the blades of the turbofan 6 increases, and the noise generated from the turbofan 6 increases.

[0005]

SUMMARY OF THE INVENTION The present invention has been devised to solve the above-mentioned problems, and the gist of the invention is to bury a case body having an open lower part in a ceiling and to embed the case body in the ceiling. Inside the main body, a turbo fan that rotates around a vertical axis in the center part, a heat exchanger arranged around the blow side of this turbo fan, and a bell mouth installed on the suction side of the turbo fan The conditioned air that has a built-in drain pan installed at the lower part of the heat exchanger and is attached to the lower part of the case body and that has a ceiling panel that covers the ceiling opening and that has an air inlet for room air and has flowed through the heat exchanger. Ceiling-type air conditioner having an outlet for blowing air into a room, a plurality of the inlets are formed in the vicinity of the outer periphery of the ceiling panel, and a predetermined interval is provided on the suction side of the bell mouth. An air intake channel is formed between the panel and the bell mouth by extending the panel so as to cover the front surface of the panel and facing the center from the plurality of intake ports. A recessed ceiling type air conditioner is provided with a plurality of guide vanes for directing air flowing in the direction of rotation of the turbo fan.

[0006]

According to the present invention, since the above structure is provided, the air sucked from the outer periphery of the air suction passage toward the center and flows through the passage in the direction of rotation of the turbo fan by the guide vanes. It is pointed and guided in this state by a bell mouth and sucked into a turbo fan.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. An outlet 21 is disposed at the center of the rectangular ceiling panel 20 along the periphery of the four-way valve, and an inlet 22 is formed at each of the four corners.
A panel 23 is provided on the suction side of the bell mouth 12 so as to cover the front surface thereof at a predetermined interval and face the front face thereof, and a plurality of outer suction ports are provided between the bell mouth 12 and the panel 23. An air suction channel 24 that sucks air from 22 and goes to the center is formed. A plurality of (four in the figure) guide vanes 25 are installed on the upper surface of the panel 23, and the guide vanes 25 guide the suction airflow flowing through the air suction passage 24 to rotate the turbo fan 6. It is directed in the direction (arrow).
Other configurations are the same as those of the conventional one shown in FIG. 4, and corresponding members are denoted by the same reference numerals.

When the turbo fan 6 is driven by the motor 5 during the operation of the air conditioner, the room air is sucked into the air suction passage 24 from each suction port 22 from the outer periphery thereof. While being guided by the guide vanes 25 in the process of flowing through the flow path 24, the turbo fan 6 is directed in the rotation direction. Then, in this state, the air is sucked into the turbo fan 6 and energized, and then flows through the heat exchanger 7 to be conditioned air, and is blown out from each outlet 21 into the chamber 9. In the above embodiment, the guide vanes
Although 25 is provided on panel 23, it can also be provided on bellmouth 12.

[0009]

According to the present invention, a plurality of suction ports are formed near the outer periphery of the ceiling panel, and the panel is installed on the suction side of the bell mouth so as to cover the front surface thereof at a predetermined distance from the suction port. In this way, an air suction channel is formed between the panel and the bell mouth from a plurality of suction ports toward the center, and air flowing through the air suction channel is directed in the rotation direction of the turbo fan. Since a plurality of guide vanes are installed, the indoor air sucked from the plurality of suction ports on the outer periphery of the air suction passage into the air suction passage flows toward the center of the passage through the plurality of guide vanes so that the air flow of the turbo fan is reduced. Pointed in the direction of rotation,
In this state, the air is guided by the bell mouth and sucked into the turbo fan, so that the angle of attack of the air at the inlet of the blade of the turbo fan becomes small, and as a result, noise generated from the turbo fan can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view taken along line AA of FIG. 2 showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is a perspective view of a panel in the embodiment.

FIG. 4 is a longitudinal sectional view of a conventional ceiling-mounted air conditioner.

[Explanation of symbols]

 6 Turbo fan 12 Bell mouth 23 Panel 24 Air intake passage 25 Guide vane

Claims (1)

(57) [Scope of request for utility model registration] 1. A case body whose lower part is opened is placed in a ceiling.
The case is buried, and the vertical axis is
The turbo fan that rotates around and this turbo fan
A heat exchanger arranged around the outlet side and the turbo
Bell mouth installed on the suction side of the heat exchanger and the heat exchanger
A built-in drain pan installed at the bottom
Ceiling panel that is attached to the bottom of the base body and covers the ceiling opening
Conditioned air flowing through the indoor air suction port and the heat exchanger
In a ceiling-embedded air conditioner having an air outlet for blowing air into a room, the suction port is connected to an outer periphery of the ceiling panel.
A plurality is formed in the vicinity and the suction side of the bell mouth
Panel so that it covers the front of the
The panel and the Velma by opposing installing Le
To the center from the above multiple inlets
Forming a gas suction passage, to the air suction passage in double for directing air flowing through this in the rotational direction of the turbo fan
Ceiling mounting characterized by the installation of a number of guide vanes
Type air conditioner.