JP2001033056A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner in which a ventilating efficiency is excellent and the generation of noise is reduced. SOLUTION: An air conditioner is composed of a heat exchanger 8 arranged in opposing to the suction port 7 of an air passage connecting the suction part 7 formed on the back surface of a main body 1 and a plurality of air outlet ports 6 formed on the front surface of the main body 1, and a plurality of centrifugal fans 14 driven by driving motors arranged at the side surfaces of casings 11 equipped with suction ports 10 opposed to the air outlet ports 6, and the air outlet ports 6 on the front surface of the same. In this case, air guides 15, whose front surface sides are in clined inward are provided at the left and right corners of the front surface of the main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly, to a structure of an air passage connecting an inlet and an outlet.

[0002]

2. Description of the Related Art A conventional duct type air conditioner has a main body composed of a box-shaped housing composed of a top plate 2, a bottom plate 3, left and right side plates 4 and a front panel 5, as shown in FIG. A heat exchanger 8 is disposed on the air inlet 7 side of the air passage connecting the suction port 7 on the back of the front panel 1 and the plurality of air outlets 6 opened in the front panel 5, and a side face is suctioned on the air outlet 6 side. Hole 1
0, casing 1 having a blow-out hole (not shown) on the front surface
1, a plurality of centrifugal blowers 9 each having a blower fan 14 driven by a drive motor (not shown) disposed on the side of the casing 11 are provided, and an electrical cover 17 containing electrical components is provided on one side. It was a configuration that was arranged.

[0003]

However, in the above configuration, the right and left corners formed by the left and right side plates and the front panel are formed in a streamline of the blown air flowing into the suction hole on the side surface of the centrifugal blower. On the other hand, there is a problem that an extra space is generated, and a turbulent flow such as a stagnant vortex is generated, which lowers the blowing efficiency and increases noise. In view of the above problems, an object of the present invention is to provide an air conditioner having a high air blowing efficiency and low noise generation.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an air passage which connects an air inlet formed on the back of a main body and a plurality of air outlets formed on the front, facing the air inlet. And a blower fan driven by a drive motor disposed on the side of the casing in a casing in which a suction hole is formed on a side surface and a blowout hole is formed on a front surface facing the air outlet. In an air conditioner including a plurality of centrifugal blowers, a wind guide having a front surface inclined inward is provided at left and right corners of the front surface of the main body.

[0005] Further, the wind guide is configured to have a curved surface bulging outward.

Further, the air guide is formed of a heat insulating member.

[0007] Further, an electric component is arranged outside the wind guide.

[0008] Further, a triangular central air guide protruding rearward is provided on the front side of the drive motor between the plurality of centrifugal blowers.

Further, a mounting plane is formed at the tip of the triangular center air guide, and the drive motor is mounted on the mounting plane.

Further, the main body is constituted by a box-shaped housing comprising a top plate, a bottom plate, left and right side plates and a front panel, and the air guide is formed integrally with the left and right side plates or the front panel. It has a configuration.

Further, the central wind guide is provided between the top plate and the bottom plate.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the embodiments of the present invention shown in FIGS. First, a first embodiment of the present invention shown in FIGS. 1 to 4 will be described. As shown in the perspective view of FIG. 1, the plan view of FIG. 2, and the enlarged plan views of the main parts of FIGS. 3 and 4, reference numeral 1 denotes a thin sheet metal such as SECC (Electro Galvanized Steel Plate) which is incorporated inside a wall or the like. , A top plate 2, a bottom plate 3, left and right side plates 4 and a front panel 5, and a plurality of air outlets 6 formed on the side facing the wall, and a box forming an air passage 7 formed on the opposite side. A heat exchanger provided obliquely in the vicinity of the suction port 7 in the main body 1; a suction port 10 provided on the outlet 6; A plurality of centrifugal blowers including a blower fan 14 driven by a drive motor 13 having a cooling hole 12 disposed on the side of the casing 11 in which the casing 11 is formed (omitted);
Reference numeral 15 denotes a conductor formed at a left and right corner formed by the left and right side plates 4 and the front panel 5 so that the front side is inclined inward, and formed integrally with the left and right side plates 4 or the front panel 5. A wind guide, 16 is an electrical component disposed outside the wind guide 15, and 17 is an SE covering the electrical component 16.
An electrical cover 18 made of a thin sheet metal such as CC (electrogalvanized steel sheet) is attached to the rear surface of the front panel 5 by welding, has a triangular shape protruding in the rear direction, and has a mounting end to which the drive motor 13 is mounted. Forming plane 19
It is a central air guide made of thin sheet metal such as ECC (Electro Galvanized Steel Sheet).

Next, the operation and effects of the above configuration will be described. The air sucked from the suction port 7 is cooled or heated in the heat exchanger 8, passes through an air passage in the main body 1, and is guided to the wind guide 15 and the central wind guide 18. The plurality of centrifugal blowers 9 enter the casing 11 through the suction holes 10 on both sides, and are blown out from the plurality of outlets 6. The air is smoothly guided to the suction hole 10 by being guided to the air guide guide 15 and the central wind guide 18, thereby suppressing the generation of unnecessary turbulence such as a stagnant vortex. As shown in the comparison between the conventional characteristic curve a of the noise characteristic graph and the characteristic curve b of the first embodiment, it is possible to suppress the generation of the blowing noise due to the turbulent flow. Further, the air guided to the central air guide 18 easily flows into the cooling holes 12 of the drive motor 13, so that the drive motor 13 can be effectively cooled. The air guide 15 is connected to the left and right side plates 4.
Alternatively, since it is formed integrally with the front panel 5 and the central wind guide 18 also serves as a mounting bracket for the drive motor 13, the number of parts is not increased, so that parts management costs are reduced. Advantageously. Also,
By storing the electrical components 16 in the unnecessary space outside the wind guide 15, the space can be effectively used, and the overall size of the air conditioner can be reduced.

Next, another embodiment of the present invention shown in FIGS. 6 to 9 will be described. In the second embodiment shown in FIG. 6, the shape of the air guide 15 is a curved surface bulging outward. Since air to the suction holes 10 on both side surfaces of the plurality of centrifugal blowers 9 can be more smoothly guided than in the first embodiment, the conventional characteristic curve a of the air volume-noise characteristic graph of FIG. As shown in the comparison between the characteristic curve b of the first embodiment and the characteristic curve c of the second embodiment, it is possible to further suppress the generation of the blowing noise than the first embodiment.

In the third embodiment shown in FIG. 7, the air guide 15 is formed by a heat insulating member. A heat insulating member 20 is also provided on the entire inner side of the main body 1, so that the blown air can be insulated from the outside together with the heat insulating member 20, and an air conditioner with high thermal efficiency can be obtained.

In the fourth embodiment shown in FIGS. 8 and 9, the central air guide 18 is provided between the top plate 2 and the bottom plate 3. Since the central wind guide 18 serves as a support for supporting the top plate 2 and the bottom plate 3, the strength of the top plate 2 and the bottom plate 3 can be easily secured, and the top plate 2 and the bottom plate 3 can be connected to each other. Cost can be suppressed, for example, the plate thickness can be reduced.

[0017]

As described above, according to the present invention,
An air conditioner with good ventilation efficiency and low noise generation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of an air conditioner according to the present invention.

FIG. 2 is a plan view showing a first embodiment of the air conditioner according to the present invention.

FIG. 3 is an enlarged plan view of part A showing the first embodiment of the air conditioner according to the present invention.

FIG. 4 is an enlarged plan view of a portion B showing the first embodiment of the air conditioner according to the present invention.

FIG. 5 is an air volume-noise characteristic graph of the present invention and the conventional air conditioner.

FIG. 6 is a perspective view showing a second embodiment of the air conditioner according to the present invention.

FIG. 7 is an enlarged plan view of a main part showing a third embodiment of the air conditioner according to the present invention.

FIG. 8 is an essential part enlarged plan view showing a fourth embodiment of the air conditioner according to the present invention.

FIG. 9 is a perspective view showing a main part of a fourth embodiment of the air conditioner according to the present invention.

FIG. 10 is a perspective view of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Top plate 3 Bottom plate 4 Left and right side plates 5 Front panel 6 Outlet 7 Suction port 8 Heat exchanger 9 Centrifugal blower 10 Suction hole 11 Casing 12 Cooling hole 13 Drive motor 14 Blower fan 15 Wind guide 16 Electrical parts 17 Electrical equipment Cover 18 Central air guide 19 Mounting plane 20 Heat insulation member

Claims (8)

[Claims] 1. A heat exchanger is provided to face an air inlet connecting an air inlet formed on a back surface of a main body and a plurality of air outlets formed on a front surface of the air passage. In an air conditioner comprising a plurality of centrifugal blowers provided with a blower fan driven by a drive motor disposed on the side of the casing in a casing having a suction hole formed on the side surface and a blowout hole on the front side, An air conditioner, wherein a wind guide having a front surface inclined inward is provided at left and right corners of the front surface of the main body. 2. The air conditioner according to claim 1, wherein the air guide is formed as a curved surface bulging outward. 3. The air conditioner according to claim 1, wherein the air guide is formed by a heat insulating member. 4. The air conditioner according to claim 1, wherein an electric component is disposed outside the air guide. 5. A triangular central air guide, which protrudes rearward, is provided on the front side of the drive motor between the plurality of centrifugal blowers. Air conditioner. 6. The air conditioner according to claim 5, wherein a mounting plane is formed at a tip of the triangular center air guide, and the drive motor is mounted on the mounting plane. 7. The main body is constituted by a box-shaped housing including a top plate, a bottom plate, left and right side plates and a front panel, and the air guide is formed integrally with the left and right side plates or the front panel. 7. The air conditioner according to claim 1, wherein the air conditioner comprises: 8. The air conditioner according to claim 7, wherein the central air guide is provided between the top plate and the bottom plate.