JPH11237073A - Ceiling flush type air conditioning equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide ceiling flush type air conditioning equipment which enables effective suction of fresh air, by drilling an auxiliary suction port with an air guide plate and/or a duct on the perimeter of a fan motor of a top board. SOLUTION: In ceiling flush type air conditioning equipment, a fan motor 3 and a turbo fan motor 4 driven by the fan motor are arranged almost at the central part inside a top plate 2 within the body 1, a heat exchanger is arranged surrounding the fan motor and the turbo fan, and a grill, which is provided with a dew receiving tray at an upper part thereof contacting the undersurface of the heat exchanger and a suction port 7 comprising a bell mouth 9 facing the turbo fan at the central part thereof while a suction port 8 is provided between it and the body, is mounted at a lower part of the body facing the inside of the room. An auxiliary suction port 12 is drilled into a top plate on the periphery of the fan motor while an air guide plate 16 is provided on the periphery of the auxiliary suction port of the top plate, and a plurality of upper blades 13 are arranged at an upper part of the turbo fan surrounding the fan motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-ceiling type 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.
A fan motor 3 and a turbo fan 4 ′ driven by the fan motor 3 are arranged at a substantially central portion inside the top plate 2, and the heat exchanger is surrounded by the fan motor 3 and the turbo fan 4 ′. 5 is provided, a dew tray in contact with the lower surface of the heat exchanger 5 is provided at an upper part, and a suction port 7 composed of a bell mouth 9 opposed to the turbo fan 4 ′ is provided at a central part. The grill having the configuration provided with the outlet 7 was attached to the lower part of the main body 1 so as to face the room.

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 threaded at the lower end of a hanging support rod. It is pressed against the heat exchanger 5 from below by four fixed support plates 11. On the outer peripheral wall of the main body 1, there is provided an auxiliary suction port 12 'for sucking air in the space above the ceiling or outdoor air (hereinafter referred to as fresh air) through a duct (not shown). ′, A ventilation path 14 for guiding air is formed in the main body 1.

[0004] However, the airflow sucked from the suction port 7 and exchanged heat by the heat exchanger 5 toward the outlet 8 flows through the air passage connecting the inlet 7 and the outlet 8. There has been a problem that the amount of ventilation is reduced by the amount of the air resistance caused by the ventilation path 14. In addition, since the ventilation passage 14 is bent and formed in an elongated shape, the flow resistance of the airflow passing through the ventilation passage 14 is increased, so that the suction pressure is not increased, and the fresh air cannot be efficiently sucked. Had.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, in the present invention, an auxiliary suction port provided with a baffle plate and / or a duct is provided around a fan motor on a top plate to provide fresh air. It is an object of the present invention to provide a ceiling-mounted air conditioner capable of inhaling air.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves the above-mentioned problem by driving a fan motor and a fan motor at a substantially central portion inside a top plate in a box-shaped main body having an open lower part. A turbo fan, a heat exchanger surrounding the fan motor and the turbo fan, a dew tray in contact with a lower surface of the heat exchanger at an upper portion, and a bell mouth opposed to the turbo fan at a central portion. In the ceiling-embedded air conditioner, a grill having a configuration having an air outlet between the main body and the main body is provided at a lower portion of the main body so as to face the interior of the room. In addition to drilling an auxiliary suction port on the top plate, a wind guide plate is provided around the auxiliary suction port of the top plate, and a plurality of upper blades surrounding the fan motor are provided above the turbo fan. ing

Further, the plurality of upper blades are arranged radially in a curved arc shape.

[0008] Also, the plurality of upper blades are formed integrally with the turbofan.

Further, the auxiliary suction port of the top plate is formed of a bulging portion formed by bulging upward by protruding, and the bulging portion also serves as the air guide plate.

Further, the air guide plate is provided below the top plate.

The air guide plate is formed in a curved shape.

Further, a cylindrical shroud having a curved surface portion surrounding the fan motor and having a curved surface on the side of the auxiliary suction port is continuously formed on the plurality of upper blades.

Further, the lower end of the air guide plate provided below the top plate is brought close to the curved surface of the shroud.

Further, the curved surface portion of the shroud and the lower end portion of the air guide plate which are brought close to each other are overlapped with each other via a predetermined gap.

Further, a duct is attached to the auxiliary suction port of the top plate.

Further, the duct is provided with an on-off valve.

The mounting means for mounting the duct on the auxiliary suction port of the top plate includes a mounting screw hole formed in the top plate and an insertion hole corresponding to the mounting screw hole. The mounting flange provided in the mounting flange is screwed into the mounting screw hole, and the duct is mounted on the top plate.

Further, the mounting means for mounting the duct to the auxiliary suction port of the top plate includes a plurality of mounting portions provided on the top plate and having a substantially L-shaped cross section, and a projection corresponding to the mounting portion. And a mounting flange provided on the duct with a concave fitting notch or a concave notch. The fitting piece of the mounting flange is fitted to the mounting portion, or the mounting flange is attached to the notch. Insert the part and rotate the mounting flange,
The mounting flange is fitted between the top plate and the mounting portion to attach the duct to the top plate.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 1, FIG. 2, FIG. 3 (A) and FIG. 3 (B), FIG. 4 (A) and FIG. 4 (B), FIG. 5 (A) and FIG.
(A), FIG. 6 (A ′) and FIG. 6 (B),
The ceiling-embedded air conditioner according to the present invention includes a fan motor 3 and a turbo fan 4 ′ driven by the fan motor 3 at a substantially central portion inside a top plate 2 in a box-shaped main body 1 having an open bottom. And the fan motor 3 and the turbo fan
The heat exchanger 5 is arranged so as to surround the 4 ′, the dew tray in contact with the lower surface of the heat exchanger 5 is provided at the upper part, and the suction port 7 composed of the bell mouth 9 facing the turbo fan 4 ′ is provided at the center. In addition to the above, a grill having a configuration in which an outlet 7 is provided between itself and the main body 1 is mounted below the main body 1 so as to face the room.

The shielding member 6 has one end fixed to the main body 1 by two screws, and the other end fixed to the main body 1 and fixed to a threaded portion at the lower end of a hanging support rod 10 with a nut. The support plate 11 is pressed against the heat exchanger 5 from below.

The turbo fan 4 has a plurality of curved arc-shaped blades 4a radially provided therein for guiding the suction air sucked from the suction port 7 to the heat exchanger 5. Has an open configuration.
When the turbo fan 4 is driven by the fan motor 3, suction air guided from the suction port 7 to the bell mouth 9 is sucked into the turbo fan 4 as shown by a broken arrow in FIG. 1. The heat is exchanged by the heat exchanger 5 and sent to the outlet 8.

An auxiliary suction port 12 is formed in the top plate 2 at the periphery of the fan motor 3, and a baffle plate 16 is provided at the periphery of the auxiliary suction port 12 of the top plate 2. A plurality of curved arc-shaped upper blades 13 having a shape similar to that of the blades 4a are provided radially so as to surround the motor 3, whereby, as in the prior art described above, The airflow sucked from the suction port 7, subjected to heat exchange by the heat exchanger 5, and headed toward the blowout port 8 flows through the air passage connecting the suction port 7 and the blowout port 8 through the air passage 14. In addition to the structure in which the problem that the amount of ventilation decreases due to the resistance is prevented, the problem that the flow resistance of the airflow passing through the ventilation path 14 increases is eliminated, Auxiliary suction The external fresh air from the mouth 12 a structure to be efficiently inhaled.

Further, since the plurality of upper blades 13 are formed integrally with the turbofan 4, the dimensions and shape can be accurately finished and the structure is advantageous in terms of cost.

The auxiliary suction port 12 of the top plate 2 is
As shown in the figure, the bulging portion is formed by bulging upward by protruding, and the bulging portion also serves as the wind guide plate 16.
The swelling portion also serves to efficiently guide external fresh air, so that the external fresh air can be efficiently sucked from the auxiliary suction port 12.

Further, by providing the air guide plate 16 below the top plate 2 as shown in FIG. 3B, external fresh air sucked from the auxiliary suction port 12 can be supplied to the upper blade. It is configured to be able to efficiently lead to 13.

Further, since the air guide plate 16 is formed in a curved shape, external fresh air sucked from the auxiliary suction port 12 can be guided more efficiently toward the upper blade 13. ing.

Further, the upper blades 13 shown in FIG.
As shown in FIGS. 4A and 4B, a cylindrical shroud 15 surrounding the fan motor 3 and having a curved surface curved toward the auxiliary suction port 12 is formed continuously. Thereby, external fresh air sucked from the auxiliary suction port 12 and guided to the upper blade 13 can be guided more efficiently.

FIG. 4 shows a curved surface of the shroud 15.
As shown in (B), by bringing the lower end portion of the air guide plate 16 provided below the top plate 2 close to each other, the suction from the auxiliary suction port 12 and the upper portion The configuration is such that external fresh air guided to the blade 13 can be guided more efficiently.

Further, as shown in FIG. 4B, the curved surface portion of the shroud 15 and the lower end portion of the air guide plate 16 are overlapped with each other via a predetermined gap as shown in FIG. As described above, the configuration is such that external fresh air sucked from the auxiliary suction port 12 and guided to the upper blade 13 can be guided more efficiently.

The auxiliary suction port 12 of the top plate 2 is
As shown in (A), by attaching the duct 17, the outdoor fresh air can be effectively guided from the tip end of the duct 17 penetrating the wall behind the ceiling. .

The duct 17 is provided with an open / close valve 18 connected to the base end of an open / close wire 19 and rotatably supported by a support shaft 18a. As shown by the arrow a, the distal end of the opening / closing wire 19 introduced into the room is operated to open / close the opening / closing valve 18 so that the flow rate of outdoor fresh air sucked from the auxiliary suction port 12 can be adjusted. The configuration is as follows.

The attachment means for attaching the duct 17 to the auxiliary suction port 12 of the top plate 2 is shown in FIG.
As shown in (B), the mounting flange 17a provided in the duct 17 is provided with a mounting screw hole 2a formed in the top plate 2 and an insertion hole 17b corresponding to the mounting screw hole 2a. A screw 20 inserted through the insertion hole 17b of the mounting flange 17a is screwed into the mounting screw hole 2a to attach the duct 17 to the top plate 2.
As a result, a structure is provided in which the duct 17 can be accurately attached to the top plate 2.

FIG. 5B shows the mounting screw hole 2a.
By providing the projection 2b which protrudes downward as shown in FIG. 5, the strength of the mounting screw hole 2a is increased so that the screw 20 can be screwed firmly.

A mounting means for attaching the duct 17 to the auxiliary suction port 12 of the top plate 2 is shown in FIG.
As shown in FIG. 6A, FIG. 6A and FIG. 6B, a plurality of mounting portions 2c provided on the top plate 2 and having a substantially L-shaped cross section, A mounting flange 17a provided on the duct 17 with a corresponding convex fitting piece 17c or a concave notch 17d.
a, the fitting piece 17c is fitted into the mounting portion 2c, or the mounting portion 2c is inserted into the cutout portion 17d to insert the mounting flange 2c.
17a, the mounting flange 17a is fitted between the top plate 2 and the mounting portion 2c, and the duct 17 is mounted on the top plate 2. , As in one embodiment described above,
The fitting piece 17c of the mounting flange 17a is fitted into the mounting portion 2c while rotating the mounting flange 17a, or the notch 17
By inserting the mounting portion 2c into the d and rotating the mounting flange 17a, and fitting the mounting flange 17a between the top plate 2 and the mounting portion 2c, the duct 17 is The structure is such that it can be accurately attached to the plate 2.

Further, since the mounting portion 2c is formed by cutting and raising, the dimensions and shape can be accurately finished, and the configuration is simple and advantageous in cost.

With the above configuration, FIG. 1, FIG. 2, and FIG.
(A) and FIG. 3 (B), FIG. 4 (A) and FIG.
(B), FIG. 5 (A) and FIG. 5 (B), and FIG. 6 (A)
As shown in FIGS. 6 (A ′) and 6 (B), an auxiliary suction port 12 is formed in the top plate 2 around the periphery of the fan motor 3, and the auxiliary suction port 12 is formed in the periphery of the auxiliary suction port 12 of the top plate 2. Since a plurality of curved upper blades 13 having the same shape as the blades 4a are provided radially so as to surround the fan motor 3 above the turbo fan 4, a wind guide plate 16 is provided. As described in the related art described above, the airflow sucked from the suction port 7 and exchanged heat by the heat exchanger 5 toward the outlet 8 is air connecting the inlet 7 and the outlet 8. The passage has a structure in which the problem that the ventilation amount is reduced by the amount of the air resistance due to the ventilation passage 14 does not occur, and the ventilation passage
The problem that the flow resistance of the air flow passing through 14 becomes large is eliminated, and the ceiling-embedded air conditioner is configured so that the fresh air outside can be efficiently sucked in from the auxiliary suction port 12.

[0037]

As described above, according to the present invention, an auxiliary suction port provided with a baffle plate and / or a duct is provided around the fan motor on the top plate so that fresh air can be effectively sucked. It becomes a ceiling embedded type air conditioner.

[Brief description of the drawings]

FIG. 1 is a sectional view of a ceiling-mounted 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 an explanatory view showing an example of a ceiling-embedded air conditioner according to the present invention, wherein (A) is a perspective view of a turbo fan,
(B) is a sectional view of a main part.

FIG. 4 is an explanatory view showing another example of an embedded ceiling air conditioner according to the present invention, wherein (A) is a perspective view of a turbo fan,
(B) is a sectional view of a main part.

FIG. 5 is a cross-sectional view showing one embodiment of a duct of a ceiling-embedded air conditioner according to the present invention, wherein (A) shows a duct and an on-off valve for opening and closing the duct, and (B) shows an attached state of the duct. Show.

FIG. 6 is an explanatory view showing another embodiment of the duct of the ceiling-mounted air conditioner according to the present invention, wherein (A) and (A ′) are exploded perspective views showing a top plate and a duct of the main body; (B) is a cross-sectional view showing the state of attachment of the duct.

FIG. 7 is a sectional view of a ceiling-mounted air conditioner according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body of ceiling embedded type air conditioner 2 Top plate 2a Mounting screw hole 2b Projection 2c Mounting part 3 Fan motor 4 Turbo fan 4a Blade 5 Heat exchanger 6 Shielding member 7 Suction port 8 Air outlet 9 Bell mouth 10 Support Rod 11 Support plate 12 Auxiliary suction port 13 Upper blade 15 Shroud 16 Air guide plate 17 Duct 17a Mounting flange 17b Insertion hole 17c Fitting piece 17d Notch 18 Open / close valve 18a Support shaft 19 Opening / closing wire 20 Screw

Claims (13)

[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 disposed, a dew tray in contact with the lower surface of the heat exchanger is provided at an upper portion, and a suction port formed of a bell mouth opposed to the turbo fan is provided at a central portion, and an outlet is provided between the heat exchanger and the main body. In a ceiling-mounted air conditioner in which a grill having a configuration including: is attached to the lower part of the main body so as to face the room, an auxiliary suction port is formed in a top plate around the fan motor, An embedded ceiling air conditioner, wherein a wind guide plate is provided around an auxiliary suction opening of the plate, and a plurality of upper blades surrounding the fan motor are provided above the turbo fan. 2. The ceiling-mounted air conditioner according to claim 1, wherein the plurality of upper blades are radially arranged in a curved arc shape. 3. The ceiling-embedded air conditioner according to claim 1, wherein the plurality of upper blades are formed integrally with the turbofan. 4. The apparatus according to claim 1, wherein the auxiliary suction port of the top plate comprises a bulging portion formed by bulging upward by protruding, and the bulging portion also serves as the wind guide plate. Item 7. The ceiling-mounted air conditioner according to Item 1. 5. The embedded ceiling air conditioner according to claim 1, wherein the air guide plate is provided below the top plate. 6. The air conditioner according to claim 1, wherein the air guide plate is formed in a curved surface. 7. A cylindrical shroud having a curved surface portion surrounding the fan motor and curved toward the auxiliary suction port is continuously formed on the plurality of upper blades. Item 4. The ceiling-mounted air conditioner according to Item 3. 8. The ceiling embedded type according to claim 5, wherein a lower end portion of the air guide plate provided below the top plate is brought close to a curved surface portion of the shroud. Air conditioner. 9. The embedded ceiling according to claim 8, wherein the curved surface portion of the shroud and the lower end portion of the air guide plate which are brought close to each other are overlapped with each other via a predetermined gap. Type air conditioner. 10. The air conditioner embedded in a ceiling according to claim 1, wherein a duct is attached to an auxiliary suction port of the top plate. 11. The ceiling-mounted air conditioner according to claim 10, wherein an on-off valve is provided in the duct. 12. The mounting means for mounting the duct to the auxiliary suction port of the top plate includes a mounting screw hole formed in the top plate and an insertion hole corresponding to the mounting screw hole. A mounting screw provided in the mounting flange, and a screw inserted through an insertion hole of the mounting flange is screwed into the mounting screw hole to attach the duct to the top plate. Item 11. A ceiling-embedded air conditioner according to item 10. 13. A mounting means for mounting the duct to an auxiliary suction port of the top plate, a plurality of mounting portions provided on the top plate and having a substantially L-shaped cross section, and a projection corresponding to the mounting portion. And a mounting flange provided on the duct with a concave fitting portion or a concave cutout portion. The fitting piece of the mounting flange is fitted into the mounting portion, or the mounting flange is mounted in the notch portion. A part is inserted to rotate the mounting flange, the mounting flange is fitted between the top plate and the mounting portion, and the duct is mounted on the top plate. The ceiling-mounted air conditioner according to claim 10.