JP2000065392A - Grille for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a grille for an air conditioner from condensation. SOLUTION: The grille 2 for an air conditioner is equipped with a main body, a duct 8 formed so as to be divided into the air passages of suction air and outlet cold air while being engaged with the main body, a ceiling panel 9 provided below the main body, and the ceiling panel air outlet ports 17, 18 exposed to the inside of a room and sending the outlet cold air 10, 11 out with a given angle. In such the grille 2 for the air conditioner, a projected part 14 is provided on the end unit of the air outlet port 15 of the duct 8 provided so as to be contacted with the upper part of the ceiling panel 9, whereby the air speed of the outlet cold air passing through the duct 8 is increased and stagnated air on the end unit of the ceiling panel 9 is induced, thereby preventing the generation of stagnation of air on the lower surface of the ceiling panel 9 and permitting the prevention of condensation on the end unit of the ceiling panel 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an air conditioner such as a fan coil unit.

[0002]

2. Description of the Related Art In recent years, high performance and high quality products have been demanded in the market for air conditioners such as fan coil units, and there has been a problem with dew condensation performance in the past. ing. Conventionally, this type of air conditioner generally has a configuration as shown in FIGS.

The air conditioner will be described below with reference to FIGS.
This will be described with reference to FIG. As shown in the figure, the air conditioner includes a main body 101 and a grill 102, and the main body 101 is provided with a blower 104 on the upper side inside a casing 103 made of a steel plate.

A blower 1 is located on the leeward side of the blower 104.
04 and a heat exchanger 105 provided therewith.
Below the drain pan 106 and further below the partition plate 1
07 was provided to form an air passage to the grill portion 102 attached below.

On the other hand, the grill portion 102 is
03, and a ceiling panel section 109, and the blown cool air 110, 115 distributed inside the ceiling panel section 109 by the duct section 108.
Was provided with a louver 111 for changing the wind direction.
Further, on the side facing the louver 111 of the blow-out portion 112 of the ceiling panel portion 109, an air path heat insulating material 113 is stuck on the inner peripheral surface of the ceiling panel portion 109.

[0006] Further, a partition plate 114 for partitioning the air path a and the air path b is disposed in the duct 108 in a vertical direction.

[0007]

In such a conventional grill of an air conditioner, when the blown cold air 110 that has passed through the duct 108 passes between the louver 111 and the air path heat insulating material 113, the louver 111 is Louver 11 by static pressure
1 flows in the lateral direction, and the cold air having an unstable wind speed blows out from the portion 116 other than the original blowout portion. Is required.

SUMMARY OF THE INVENTION The present invention is to solve such a conventional problem, and a grill for an air conditioner which can prevent dew condensation at an end of a ceiling panel by providing a projection at an end of an outlet of a duct. It is intended to provide.

Further, the blown cold air 110 that has passed since the direction changing portion 117 of the air passage b is angular becomes non-uniform due to turbulence, so that the boundary area between the blown cool air 110 and the indoor air becomes unstable, and dew condensation occurs. Therefore, it is required to reduce the occurrence of turbulence in the direction changing unit 117.

The present invention solves such a conventional problem. In a duct, by forming a direction changing portion of a wind path with a smooth curved surface, the blowing speed can be made uniform. It is another object of the present invention to provide a grill of an air conditioner capable of preventing dew condensation by stabilizing a boundary area between blown cold air and room air.

Further, when the blown cold air 110 flows into a horizontal portion of the air path, there is a problem that a turbulent flow is generated due to a sudden change in the cross-sectional area of the air path b, and the air volume is reduced. It is required to reduce the rate of change.

The present invention is to solve such a conventional problem. In a duct, a branch plate for dividing a wind path is installed at an angle, so that blown cold wind flows into a horizontal portion of the wind path. It is therefore an object of the present invention to provide a grill of an air conditioner in which a change in the cross-sectional area of an air path becomes gentle, turbulence is reduced, and a decrease in air volume can be prevented.

In the vicinity of the outlet 112, which is the boundary area between the cool air blown from the ceiling panel 109 and the room air, the steel-made ceiling panel 109 exposed and installed indoors is cooled by the blown cool air 110, 115. Therefore, there is a problem that dew condensation easily occurs, and a structure that does not cool the steel plate part is required.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and a horizontal portion is provided on a bottom surface of a heat insulating material in the vicinity of a ceiling panel outlet to prevent a boundary area between blown cold air and room air from contacting a steel plate part. It is an object of the present invention to provide a grill of an air conditioner which can prevent dew condensation on a steel plate part.

[0015]

Means for Solving the Problems One means of the grill of the air conditioner of the present invention for solving the above-mentioned problems is to provide a protrusion at the end of the outlet of the duct.

According to the present invention, a grill for an air conditioner that can prevent dew condensation at the end of a ceiling panel can be obtained by the above means.

Another means is that in the duct, the direction changing portion of the air path is formed with a smooth curved surface.

According to the present invention, the above means
The grill of the air conditioner which can prevent dew condensation by stabilizing the boundary area between the blown cool air and the room air is obtained.

Still another means is that a branch plate for dividing an air path is installed in a duct with an inclination.

According to the present invention, when the blown cold air flows into the horizontal portion of the air passage, the change in the cross-sectional area of the air passage becomes gentle, the turbulence is reduced, and the air conditioner can be prevented from reducing the air volume. The grill of the machine is obtained.

Another means is to provide a horizontal portion on the bottom surface of the heat insulating material near the ceiling panel outlet.

According to the present invention, there is provided a grill of an air conditioner capable of preventing dew condensation on a steel plate part by preventing a boundary area between the blown cool air and room air from contacting the steel plate part.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a duct is provided with a protruding portion at the end of the outlet.
Since the wind speed of the cool air blown out through the duct is increased and the air at the edge of the ceiling panel is attracted, the air at the edge of the ceiling panel can be prevented from being trapped and the condensation at the edge of the ceiling panel can be prevented.

According to a second aspect of the present invention, in the duct, the direction change portion of the air path is formed with a smooth curved surface, the blowing speed can be made uniform and laminar, and the blown cold air and the indoor It has the effect that dew condensation can be prevented by stabilizing the boundary area of air.

According to a third aspect of the present invention, in the duct, the branch plate for dividing the air path is installed at an angle, and when the blown cool air flows into a horizontal portion of the air path, the cross-sectional area of the air path is reduced. This has the effect that the change is gradual, turbulence is reduced, and a decrease in air volume can be prevented.

According to a fourth aspect of the present invention, a horizontal portion is provided on the bottom surface of the heat insulating material in the vicinity of the ceiling panel outlet, so that convection of the room air can be easily generated, and the air can be easily mixed with the cool air blown out. Can be provided with a gap between the steel plate parts, and by preventing the blown cold air from directly contacting the steel plate parts, the dew condensation on the steel plate parts can be prevented.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) As shown in FIGS. 1 to 3, an air conditioner is composed of a main body 1 and a grill 2. Blower 4
It has. Then, a heat exchanger 5 provided side by side with the blower 4 on the leeward side of the blower 4, a drain pan 6 below the heat exchanger 5, and a partition plate 7 below the heat exchanger 5, and a grill 2 attached below. The wind path is formed.

On the other hand, the grill 2 is composed of a duct 8 fitted inside the casing 3 and a ceiling panel 9, and the duct 8 blows out cold air 10 directly from a duct outlet 15 in a vertical direction like 8a. The cold air 11 blows out through the duct 8b (upper part of the suction portion) and is distributed to the air blown out from the duct outlet 16 on the opposite side like the duct 8b, and is blown into the ceiling panel 9.

A louver 12 for changing the wind direction is provided inside the ceiling panel 9, and on the side facing the louver 12, a heat insulating material 13 is attached to the inner peripheral surface of the ceiling panel 9. A substantially triangular projection 14 is provided at the end of the duct outlet 15.

With the above configuration, the blown air 11 is blown out of the main body 1, passes through the communicating duct blowout port 16 and the ceiling panel blowout port 17, and blows out from the ceiling panel 9.

As described above, since the protrusion 14 is provided at the end of the duct outlet 15, when the blown cool air 11 that has passed through the duct 8b blows out, the wind speed at which the blown cool air 11 passes through the protrusion 14 increases. By doing so, ceiling panel outlet 1
Since the air on the lower surface of the ceiling panel 9 near 7 is blown downward while attracting the air, it is possible to prevent the formation of the snow on the lower surface of the end portion of the ceiling panel 9 and to prevent dew condensation.

In this embodiment, the projection 14 is substantially triangular as shown in FIG. 2. However, it is needless to say that the present invention is not limited to this shape as long as the same operation and effect can be obtained. No.

(Embodiment 2) As shown in FIG. 1 and FIG. 2, the blown cool air 10 is blown out from a ceiling panel blowout port 18, and the blown cool air 11 passes through a direction changing portion 19 of the duct 8b. It is blown out from the outlet 17. The direction changing portion 19 of the duct 8b is formed with a smooth curved surface.

According to the above configuration, by forming the direction changing portion 19 with a smooth curved surface, when the direction of the blown cold air 11 changes downward, the direction changes along the curved surface, so that the amount of blown air is kept constant. The blowing speed can be made uniform and laminar, and dew condensation can be prevented by stabilizing the boundary area between the blowing cold air 11 and the room air.

The duct outlet 16 may be provided with a partition for reinforcement.

(Embodiment 3) As shown in FIG.
Plate 2 for separating the cold air 10 and the cold air 11
1 is provided. When the branch plate 21 is installed in the vertical direction, when the cold air 11 blows out through the duct 8b, the pressure loss increases and the amount of blown air decreases. According to the width,
It is installed so as to be inclined so as to take in more cool air 11 than cool air 10.

With the above configuration, when the blown cold air 11 flows into the horizontal portion of the air passage, the change in the cross-sectional area of the air passage becomes gentle, the turbulence is reduced, and the decrease in the air volume can be prevented.

It is to be noted that the duct of the cold air 11 may be divided into two by a partition plate for the purpose of reinforcing the duct 8b.

(Embodiment 4) FIG. 4 is a partially enlarged view of FIG.
As shown in FIG. 4, a heat insulating material 13 is provided on the opposite side of the louver 12.
Is provided, and a heat insulating material horizontal portion 22 is provided at the bottom of the heat insulating material 13. The ceiling panel 9 is made of a steel plate part 23.

By providing the heat insulating material horizontal portion 22 at the bottom of the heat insulating material 13, the convection of the room air 24 can be easily generated and mixed with the cold air 10, and the distance to the cold air 10 can be increased. Steel plate parts 23
Can be provided, and by preventing direct contact with the steel plate component 23, dew condensation on the steel plate component 23 can be prevented.

It is needless to say that the same operation and effect can be obtained by providing the heat insulating material horizontal portion 22 also at the bottom of the heat insulating material 13 on the side of the blown cool air 11.

[0043]

As described above, according to the present invention, there is obtained an advantageous effect that it is possible to prevent snowdrifts at the end of the ceiling panel and to prevent dew condensation.

Further, by keeping the amount of blown air constant and making the blowing speed uniform, an effect is obtained that the dew condensation can be prevented by stabilizing the boundary area between the blown cool air and the room air.

Further, when the blown cool air flows into the horizontal portion of the air passage, the cross-sectional area of the air passage gradually changes, thereby reducing the turbulence and preventing the air volume from decreasing.

In addition, by preventing the boundary area between the blown cool air and the room air from contacting the steel plate component, the effect of preventing dew condensation on the steel plate component can be obtained.

[Brief description of the drawings]

FIG. 1 is a vertical (AA) sectional view showing a configuration of a grill of an air conditioner according to Embodiments 1 and 2 of the present invention.

FIG. 2 is a transverse (BB) cross-sectional view showing a configuration of a grill of the air conditioner according to the second and third embodiments.

FIG. 3 is a perspective view including a partially perspective view showing a configuration of a main body of the grill and the grill of the air conditioner according to the first embodiment;

FIG. 4 is a partially enlarged view of FIG. 1 of the grill of the air conditioner of Embodiment 4;

FIG. 5 is a perspective view including a partial perspective view showing a configuration of a main body of the grill of the conventional air conditioner and the grill.

6 is a vertical (AA) sectional view of the grill of the air conditioner of FIG. 5;

FIG. 7 is a horizontal (BB) sectional view of the grill of the air conditioner in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Grill 3 Casing 8a Duct 8b Duct 9 Ceiling panel 10 Blow-out cold air 11 Blow-out cold air 13 Insulation material 14 Projection 15 Duct outlet 16 Duct outlet 17 Ceiling panel outlet 18 Ceiling panel outlet 19 Direction change part 21 Branch plate

Continued on the front page (72) Inventor Toshihiko Hashimoto 6-2-61 Imafukunishi, Joto-ku, Osaka-shi, Osaka Matsushita Seiko Co., Ltd. F-term (reference) 3L049 BB03 BB20 3L051 BJ10

Claims (4)

[Claims] 1. A main body, a duct for separately forming an air path for intake air and an outlet cold air and fitting the main body, a ceiling panel provided at a lower portion of the main body, In a grill of an air conditioner provided with a ceiling panel outlet of the ceiling panel that blows out at an angle, a projection is provided at an end of the duct outlet of the duct provided in contact with an upper part of the ceiling panel. The grill of the air conditioner characterized by. 2. The grill for an air conditioner according to claim 1, further comprising a duct having a direction changing portion of the air path having a smooth curved surface. 3. A grill for an air conditioner according to claim 1, further comprising a duct having an inclined structure of a branch plate for dividing an air path of the blown cool air. 4. The grill for an air conditioner according to claim 1, wherein a bottom surface of the heat insulating material provided at a lower portion of the duct outlet is horizontal.