JPH10238802A - Ceiling embedded air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling embedded air conditioner in which air suction pressure is raised, the air supply area of a ventilating duct is increased, a large quantity of fresh air is introduced and a heat exchanging efficiency is improved by forming an inlet port in the periphery of the fan motor of a top plate, sucking air from the inlet port and urging the air by a turbo-fan. SOLUTION: A ceiling embedded air conditioner comprises a fan motor 3 provided at a substantially central part inside the top plate 2 of a main body 1 so as to direct a rotation shaft vertically, a turbo-fan 4 driven by the fan motor 3, which is arranged in the main body, a heat exchanger 5 which surrounds the turbo-fan 4, an inlet port 7 provided in the lower part of the main body opposed to the turbo-fan 4 and outlet ports 8 on the outer periphery in the lower part of the main body. An inlet port 12 is formed on the top plate 2 in the peripheral edge of the fan motor 3 and a plurality of blades 13 which surround the fan motor 3 are provided on the upper part of the turbo-fan 4.

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, and more particularly, to a structure of a suction air passage provided with a turbo fan.

[0002]

2. Description of the Related Art A ceiling-mounted air conditioner according to a conventional example is:
For example, as shown in FIG. 4, a fan motor 3 is provided at a substantially central portion inside a top plate 2 of a box-shaped main body 1 having an open lower part with a rotation axis vertical, and a turbo motor driven by the fan motor 3 is provided. A fan 4 'is hung, and a heat exchanger 5 is also hung around the turbo fan 4'. The open surface is covered by a shielding member 6 having an upper part with a dew tray in contact with the lower surface of the heat exchanger 5, and the shielding member 6 is provided with a suction port 7 facing the turbofan 4, An outlet 8 is provided at the outlet, and the inlet 7 is covered with a bell mouth 9.

Although not shown, the shielding member 6 has one end fixed to the main body 1 with two screws, and the other end fixed to the main body 1 with a nut and fixed to a screw provided at the lower end of a hanging support rod. The four support plates 11 pressed against the heat exchanger 5 from below. The air in the space above the ceiling or
Outdoor air (fresh air) with a duct not shown
A suction port 12 ′ for sucking air is provided, and a ventilation path 14 for guiding air into the main body 1 is formed from the suction port 12 ′.

In the above configuration, when the air conditioner is operated, refrigerant from an outdoor unit (not shown) circulates through the heat exchanger 5, and the fan motor 3 drives the turbo fan 4. Then, the room air is guided from the suction port 7 to the bell mouth 9 and is sucked into the turbo fan 4 to be energized. Then, it is cooled or heated in the process of flowing through the heat exchanger 5 to be conditioned air and blown out from the outlet 8 into the room.

On the other hand, a suction port 12 ′ provided on the outer peripheral wall of the main body 1.
From there, the air in the space above the ceiling passes through the ventilation path 14, is guided by the bell mouth 9, is sucked into the turbo fan 4 ', and is energized. Then, the air flows through the heat exchanger 5 and is blown into the room from the outlet 8. However, in the above configuration, since the ventilation path 14 is formed, a part of the blowing air path that guides the air to the outlet 8 is used, so that there is a disadvantage that the blowing area is reduced and the air volume is also reduced. Further, since the ventilation passage 14 is bent long, the flow resistance of the intake air is large, the suction pressure does not rise, and a large amount of air (fresh air) cannot be sucked, so that the heat exchange efficiency cannot be sufficiently exhibited. was there.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a suction port formed around a fan motor on a top plate, and air is sucked from the suction port to be urged by a turbo fan. By increasing the air suction pressure,
It is an object of the present invention to provide a ceiling-mounted air conditioner having a large ventilation area, a large amount of fresh air, and improved heat exchange efficiency.

[0007]

The present invention has been made to solve the above-mentioned problem, and has a fan motor and a fan motor driven by the fan motor at a substantially central portion inside a top plate in a box-shaped main body having an open lower portion. A heat exchanger surrounding the fan motor and the turbofan, and covering an open surface with a shielding member having an upper part with a dew tray in contact with a lower surface of the heat exchanger. In addition to providing a suction port facing the turbo fan, an air outlet is provided between the body and the main body, the suction port is covered with a bell mouth, and a grille facing the room is attached to the lower part of the main body. In the air conditioner, a suction port is formed in a top plate around the fan motor, and a plurality of blades are provided above the turbo fan so as to surround the fan motor.

Further, the suction port of the top plate is formed to protrude upward by protruding. Further, the plurality of blades are arranged radially in a curved arc shape. Further, the plurality of blades are formed integrally with the turbo fan.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, a suction port is formed around a fan motor on a top plate, and air is sucked from the suction port to be urged by a turbo fan. As a result, the air-blowing area of the ventilation path is increased, and a large amount of fresh air is introduced to improve the heat exchange efficiency, resulting in a ceiling-mounted air conditioner.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is a sectional view of an indoor unit of the ceiling-mounted air conditioner, FIG. 2 is a bottom view with a panel removed, and FIG. 1 is a sectional view taken along line AA of FIG. As shown in the figure,
A fan motor 3 is provided at the center of the inside of the top plate 2 of the box-shaped main body 1 with the lower part opened, with the rotation axis being vertical, and a turbo fan 4 driven by the fan motor 3 is suspended in the main body. A heat exchanger 5 likewise surrounds the fan 4. The open surface is covered by a shielding member 6 having an upper part with a dew tray in contact with the lower surface of the heat exchanger 5, and the shielding member 6 is provided with a suction port 7 facing the turbofan 4, An outlet 8 is provided, the inlet 7 is covered with a bell mouth 9, and a grill facing the room is attached to the lower part of the main body.

The shielding member 6 is fixed to the main body 1 at one end with two screws, and the other end is fixed to the main body 1 with four screws fixed at the lower end of a hanging support rod 10 with nuts. The support plate 11 presses the heat exchanger 5 from below.

A plurality of upper suction ports 12 are formed at the periphery of the fan motor 3 of the top plate 2. Further, as shown in FIG. 4, the upper suction port 12 may be swelled upward by cutting and raising to form a suction port for sucking air from a side surface thereof. As shown in FIG. 3, the turbo fan 4 has a plurality of curved arc-shaped blades 4 a radially provided therein for guiding the air sucked from the suction port 7 to the heat exchanger 5, An opening is provided between the blades 4a. The fan motor 3 is provided above the turbo fan 4.
, A plurality of curved arc-shaped blades 13 having the same shape as the internal blade 4a are arranged radially and integrally.

In the above configuration, when the air conditioner is operated, refrigerant from an outdoor unit (not shown) circulates through the heat exchanger 5, and the turbo fan 4 is driven by the fan motor 3. Then, the room air is guided from the suction port 7 to the bell mouth 9 as shown by the broken arrow in FIG.
Inhaled and energized. Then, it is cooled or heated in the process of flowing through the heat exchanger 5 to be conditioned air and blown out from the outlet 8 into the room.

On the other hand, as shown by a solid arrow in FIG. 1, air from the space above the ceiling or outdoor air is sucked in from a ceiling fan or a duct (not shown) from the upper suction port 12 provided in the top plate 2. A large amount of air is guided to the heat exchanger 5 by the blades 13 provided at the upper portion, and is blown into the room from the outlet 8. As described above, the suction port is formed around the fan motor on the top plate, and the air is sucked from the suction port and urged by the turbo fan, so that the air suction pressure is increased and the blowout area of the ventilation path is increased. And a large amount of fresh air introduced to improve the heat exchange efficiency.

[0015]

As described above, in the present invention,
A suction port is formed around the fan motor on the top plate of the main body, and air is sucked from the suction port and urged by a turbo fan, so that the air suction pressure is increased and the blowing area of the ventilation path is increased. A ceiling-mounted air conditioner with a large amount of fresh air introduced and improved heat exchange efficiency.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embedded ceiling air conditioner according to the present invention.

FIG. 2 is a bottom view of the ceiling-mounted air conditioner according to the present invention.

FIG. 3 is a perspective view of a turbo fan showing an embodiment according to the present invention.

FIG. 4 is a cross-sectional view of an upper suction port of a top plate showing an embodiment according to the present invention.

FIG. 5 is a cross-sectional view of a ceiling-mounted type air conditioner according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 3 Fan motor 4 Turbo fan 4a, 13 Blade 5 Heat exchanger 6 Shielding member 7 Inlet 8 Outlet 9 Bell mouth 10 Support rod 11 Support plate 12 Upper inlet

Claims (4)

[Claims] 1. A fan motor and a turbo fan driven by the fan motor are disposed at a substantially central portion inside a top plate in a box-shaped main body having an open lower portion, and surround the fan motor and the turbo fan. A heat exchanger is arranged, and the open surface is covered by a shielding member having an upper part with a dew tray in contact with the lower surface of the heat exchanger, and the shielding member is provided with a suction port facing the turbo fan, and a main body and In the ceiling-embedded air conditioner in which an air outlet is provided and the air inlet is covered with a bell mouth, and a grill facing the room is attached to a lower portion of the main body, the air inlet is provided in a top plate around the fan motor. And a plurality of blades provided above the turbo fan so as to surround the fan motor. 2. A ceiling-embedded air conditioner, wherein a suction port of the top plate is formed to protrude upward by protruding. 3. An embedded ceiling air conditioner, wherein the plurality of blades are radially arranged in a curved arc shape. 4. An embedded ceiling air conditioner, wherein the plurality of blades are formed integrally with the turbo fan.