JP3311272B2 - Condensation prevention structure at air outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a structure for preventing dew condensation at an air outlet of an air conditioner.

[0002]

2. Description of the Related Art Cold air blown from an air conditioner operated at a high temperature or high humidity is blown out from an air outlet to lower the indoor temperature. Since the frame frame or the like to be installed is also cooled by the cool air, if warm air circulating around the air outlet comes into contact with these parts, dew condensation occurs at those parts.

[0003] During operation, the frame surrounding the air outlet is in contact with cold air, so that the temperature is in a low state. In addition, since the frame is located in a position where warm air circulating around the frame is easily in contact with the air, particularly, dew condensation may occur. There are many parts.

[0004] For this reason, in order to prevent the occurrence of dew condensation on the frame-shaped frame installed around the air outlet, a number of techniques have been conventionally developed, for example, Japanese Utility Model Application Laid-Open No. 61-159731. Japanese Patent Application Laid-Open No. 2-67838, Japanese Utility Model Application Laid-Open No. 6-2046, and the like.

An apparatus for preventing dew condensation at an air outlet disclosed in Japanese Utility Model Laid-Open Publication No. Sho 61-159731 discloses a cover for covering the surface of the air outlet with a gap between the air outlet and the edge surface. The structure is attached, and the heat insulating effect of the gap suppresses the temperature decrease of the cover, thereby preventing the occurrence of dew condensation.

[0006] The dew condensation preventing structure of an air-conditioning grill disclosed in Japanese Utility Model Laid-Open No. 2-67838 is a structure in which a grill decorative frame is attached to the entire periphery of a grill body with a heat insulating material interposed therebetween. This prevents the temperature of the grill makeup frame from dropping and prevents the occurrence of condensation.

The air-conditioning apparatus disclosed in Japanese Utility Model Laid-Open Publication No. Hei 6-2046 has a dew-prevention outlet provided with a large number of cool air vents in a frame-shaped frame. Prevents warm air from coming into contact with the frame, thereby preventing the occurrence of dew condensation.

[0008]

Problems to be Solved by the Invention
No. 31, JP-A-2-67838 discloses a dew condensation prevention technology, as shown in FIG. 7, in which a peripheral portion 61 (mouth, peripheral portion) of an air outlet 60 and a frame 62 are provided.
A heat insulating layer 63 (air, a heat insulating material) is interposed between the cover member and the grill decorative frame.

However, when cool air is blowing out from the air outlet 60, as shown in FIG.
Is generated, and the temperature of the frame 62 is reduced by the cold air 64 that has become the vortex 65 coming into contact with the surface portion on the inner peripheral side of the frame 62. Therefore, dew condensation occurs when the warm air 66 attracted by the cool air 64 comes into contact with the frame 62. When the dew condensation occurs, it eventually grows into a water drop 67 and falls into the room, causing a problem that the thing near the lower part of the air outlet 60 gets wet.

That is, even if a structure in which a heat insulating layer 63 made of air or a heat insulating material is interposed as in the prior art, the frame 62 is cooled by the swirling of the cool air 64 that has become the vortex 65, so that dew condensation is prevented. The effect is inadequate.

Further, in the case of the dew condensation prevention device disclosed in Japanese Utility Model Laid-Open Publication No. 61-159731, there is a problem that dust easily accumulates in a gap provided between the lip and the cover. Since the gap has a narrow shape, it is difficult to clean the inside. In addition, when dew water flows into the gap, it leads to the generation of mold and is unsanitary.

On the other hand, in the air conditioner disclosed in Japanese Unexamined Utility Model Publication No. 6-2046, a dew condensation preventing air outlet has a large number of cool air vents in a frame and guides cool air through the cool air vents. Must be formed, the structure is complicated, the manufacturing cost is high,
Not practical.

As described above, various techniques for preventing dew condensation have been developed, but those having insufficient dew condensation prevention effects have been developed.
Alternatively, in many cases, the effect of preventing dew condensation is excellent, but the structure is complicated and the production cost is high, so that practicality is poor.

It is an object of the present invention to provide a dew condensation preventing structure for an air outlet having a simple structure and excellent dew condensation preventing effect.

[0015]

In order to solve the above-mentioned problems, the present invention covers the peripheral portion of an air outlet of an air conditioner with a heat insulating layer, and has an inner peripheral portion of the air outlet on the surface of the heat insulating layer. It is characterized in that a frame body located on the outer peripheral side of 0.5 mm to 5 mm from the opening end is provided . Here, the open end of the air outlet refers to the tip of the heat insulating layer when the heat insulating layer protrudes into the air outlet.

[0016] The peripheral portion of the air outlet is covered with a heat insulating layer and a frame, and the inner peripheral portion of the frame is located on the outer peripheral side from the open end of the air outlet. Since the vortex generated by the cool air blown out from the opening end does not contact the frame, the temperature of the frame does not decrease. Therefore, dew condensation does not occur even if warm air circulating near the air outlet contacts the frame.

Further, the present invention employs a structure in which a heat insulating layer is interposed between the peripheral portion of the air outlet and the frame so that the peripheral portion does not come into contact with the frame. There is no occurrence of dew condensation due to a decrease in the temperature of the frame due to the portion.

Here, the appropriate value of the distance from the open end of the air outlet to the inner peripheral portion of the frame is determined by the size of the air outlet, the air blowing speed, the temperature difference and humidity difference between the blown air and the outside air, Although it depends on the shape and dimensions of the portion immediately before the opening end or the turbulence of the outside air, a sufficient dew condensation preventing effect can be obtained in the range of 0.5 mm to 5 mm.

The reason is that when the inner peripheral portion of the frame is separated from the opening end of the air outlet by 0.5 mm or more, the cool air flowing around by the vortex generated at the opening end only contacts the heat insulating layer. This is because the frame does not reach the frame, so that the frame is not cooled by cold air.

If the distance from the opening end of the air outlet to the inner periphery of the frame is smaller than 0.5 mm, the effect of preventing dew condensation is insufficient. There is no, but the appearance is reduced because the exposed part of the heat insulating layer, which is different from the frame and the material and color tone, is large,
Adhesion of dust and the like to the heat insulating layer also increases. Therefore,
The distance from the open end of the air outlet to the inner periphery of the frame is
A range of 0.5 mm to 5 mm is an appropriate value.

On the other hand, in the present invention, the heat insulating layer can be formed of any one of foamed synthetic resin, ceramic, wood, and cork material. Here, the foamed synthetic resin has a high heat insulating property, but it is difficult to accurately attach the heat insulating layer, but has characteristics such as easy absorption of manufacturing errors between the frame body and the peripheral portion of the outlet. Ceramics are somewhat inferior in heat insulation, but are excellent in accuracy and appearance. Further, wood has good workability, so that it is suitable not only as a heat insulating layer but also as a frame, can be manufactured integrally, and has a good appearance. Further, the cork material has excellent heat insulating properties.

Further, in the present invention, when a foamed synthetic resin is employed as a material for forming a heat insulating layer, rubber foam, polyethylene foam, polyurethane foam, E foam
PDM forms and the like can be used. here,
EPDM stands for Ethylene propylene
Abbreviation of diene terpolymer, which means an ethylene-propylene-diene copolymer. Such a foamed synthetic resin is compressed so as to protrude inward when it is mounted, whereby the positional relationship between the inner peripheral portion of the frame body and the opening end can be made as described above.

[0023] Since the foamed synthetic resin has excellent heat insulating properties, it can be suitably used as a material for forming a heat insulating layer. This is because it is easy to fill the gap between the opening end of the outlet and the frame without a gap because of the foam material and to insulate the frame. Since the polyethylene foam has a good thickness accuracy and an appropriate hardness, it is easy to accurately process and attach the shape and dimensions, and it is easy to keep the inside margin of the frame constant. Since the polyurethane foam is rich in flexibility, it can follow even if the gap between the peripheral portion of the outlet and the frame changes. Rubber foam has high durability, is more flexible than polyethylene foam, and has strong repulsion because it is a closed cell, and has good followability to the gap between the peripheral portion of the outlet and the frame.

Among these foamed synthetic resins, in particular, EP
Since the DM foam has excellent heat insulating properties, it has a high dew condensation preventing effect, and has high flexibility and resilience, so that the work can be performed reliably and easily in the process of attaching the frame. Further, since the adhesiveness to the frame body is high, no gap is generated, and no cold air enters and dew condensation occurs, and dust does not accumulate. In addition, the durability is particularly excellent.

Further, in the present invention, the inner peripheral surface of the air outlet may be tapered in the air blowing direction. If the inner peripheral surface of the air outlet has such a shape, the diffusion of the cool air immediately after being blown out from the vicinity of the opening end of the air outlet is suppressed, so that the vortex generation range due to the cool air can be reduced. Therefore, even if the distance from the opening end of the air outlet to the inner peripheral portion of the frame is reduced, there is an advantage that a sufficient dew condensation preventing effect can be exhibited.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an air outlet according to an embodiment, and FIG. 2 is a sectional view taken along line AA of FIG.

In the present embodiment, as shown in FIGS.
Air outlet 1 that blows out cool air sent from the air conditioner
0 is covered with a heat insulating material 15, and a frame 14 is provided on the surface of the heat insulating material 15 such that the inner peripheral portion 11 is located on the outer peripheral side from the open end 12 of the air outlet 10. That is, the heat insulating material 15 is interposed between the peripheral portion 13 and the frame 14 so that the frame 1
4 has a structure in which the inner peripheral portion 11 is drawn in outside the open end 12 of the air outlet 10.

Here, the dew condensation preventing function will be described with reference to FIGS. As described above, since the inner peripheral portion 11 of the frame body 14 is located outside the open end 12 of the air outlet 10, the cool air 17
The vortex 20 caused by the contact comes into contact with the exposed portion 15a of the heat insulating material 15 but does not reach the frame 14. Therefore, the temperature of the frame 14 does not decrease due to the influence of the vortex 20.

Further, in the present embodiment, the structure in which the heat insulating material 15 is interposed between the peripheral portion 13 of the air outlet 10 and the frame 14 prevents the frame 14 from contacting the peripheral portion 13. During operation, the temperature of the frame body 14 does not drop due to the influence of the peripheral portion 13 which is in contact with the cool air 17 and has a low temperature.

As described above, since the frame body 14 is not affected by any of the eddy current 20 and the peripheral portion 13 cooled by the cool air 17, the temperature does not decrease. Therefore, the warm air 18 circulating around the air outlet 10 is
Dew condensation does not occur even in contact with

In this embodiment, as shown in FIG. 4, when the distance 19 from the open end 12 of the air outlet 10 to the inner peripheral portion 11 of the frame 14 is 1.5 mm,
Excellent dew condensation prevention effect is obtained, and the exposed portion 1 of the heat insulating material 15
Since 5a was not conspicuous, the appearance was also good.

When the distance 19 is smaller than 0.5 mm, the dew condensation preventing effect is insufficient. When the distance 19 is larger than 5 mm, the dew condensation preventing effect itself is not changed. Since the exposed portions 15a of the different heat insulating materials 15 increase, the appearance becomes inferior.

Further, when the EPDM foam was used as the heat insulating material 15 in the present embodiment, the heat insulating effect was high and an excellent dew condensation preventing effect was obtained. further,
Since EPDM foam has high flexibility and resilience, frame 1
In the process of attaching the 4, the work can be performed reliably and easily, and the EPDM foam has a high adhesion to the frame body 14 so that no gap is generated, so that cold air enters and dew condensation or dust accumulates. Absent. It is also particularly excellent in durability.

On the other hand, in the present embodiment, the frame 14 is made of aluminum. By forming the frame body 14 from aluminum, the thermal expansion coefficient of the peripheral portion 13 made of metal and the thermal expansion coefficient of the frame body 14 become close to each other. 14 is not displaced or deformed from the peripheral portion 13, and dimensional control in the manufacturing process is easy. In addition, since the dimensional difference between the aluminum material and the synthetic resin material caused by the temperature difference between the time of cooling and the time of heating reaches as much as about 3 mm per 2 m in length, when synthetic resin is used as the material of the frame, there is a gap. And dimensional changes in the manufacturing process are also difficult.

As described above, the dew condensation prevention structure of the present embodiment has a simple structure and requires a small installation space.
It is practical because the manufacturing cost is low and the installation work is simple. In addition, since there is no gap where dust or the like easily accumulates, maintenance such as cleaning is easy.

Next, another embodiment will be described with reference to FIGS. 5 and 6 are end views showing air outlets according to other embodiments.

In the embodiment shown in FIG.
The inner peripheral surface 30a has a tapered shape in the air blowing direction, and the other portions have the same structure as the above embodiment. By forming the inner peripheral surface 30a of the air outlet 30 into such a tapered shape, the cold air 17a blown out from the vicinity of the opening end 12 of the air outlet 30 can be prevented from being immediately diffused. Can reduce the region where the vortex 20 is generated. Therefore, even if the distance 19 from the opening end 12 of the air outlet 30 to the inner peripheral portion 11 of the frame 14 is reduced, a sufficient dew condensation preventing effect can be obtained. For this reason, there is an advantage that the exposed portion of the heat insulating material 15 can be made small and inconspicuous.

The embodiment shown in FIG.
a is an air outlet 4 having a shape spread in the air blowing direction
0 adopts a dew-prevention structure. The other parts have the same structure as the above embodiment. The air outlet 40 whose inner peripheral surface 40a has such a divergent shape.
In this case, since the cool air 17a blown out from the vicinity of the opening end 12 of the air outlet 30 is immediately diffused, the generation region of the vortex 20 due to the cool air 17a also tends to be large. 0.5mm to 11
A sufficient dew condensation preventing effect can be obtained by adopting a structure which is large within the range of ５5 mm, preferably larger than 1.5 mm in the embodiment shown in FIG.

[0039]

According to the present invention, the following effects can be obtained.

(1) The periphery of the air outlet of the air conditioner is covered with a heat insulating layer, and a frame body whose inner peripheral portion is located on the outer peripheral side from the opening end of the air outlet is provided on the surface of the heat insulating layer. Thereby, the contact between the peripheral portion and the frame, and the contact between the vortex of the cool air and the inner peripheral portion of the frame are eliminated, and the temperature of the frame is not reduced, so that dew condensation can be prevented.

(2) Since the peripheral portion of the air outlet is covered with a heat insulating layer and a frame, and the inner peripheral portion of the frame is located on the outer peripheral side from the open end of the air outlet, the manufacturing cost is reduced. The installation space is small and the installation work is simple. Also, since there is no gap where dust or the like easily accumulates, maintenance such as cleaning is easy.

(3) By setting the distance from the opening end of the air outlet to the inner peripheral portion of the frame within the range of 0.5 mm to 5 mm, an excellent dew condensation preventing effect can be obtained and the appearance is not deteriorated.

(4) By forming the heat insulating layer from one of foam synthetic resin, ceramic, wood, and cork material,
The foamed synthetic resin has high heat insulating properties, but has features such as difficulty in attaching a heat insulating layer with high accuracy and large manufacturing errors. Ceramics are somewhat inferior in heat insulation, but are excellent in accuracy and appearance. In addition, since wood has good workability, it is suitable not only as a heat insulating layer but also as a frame, and can be integrally manufactured. Further, cork materials have excellent heat insulating properties.

(5) Rubber foam, polyethylene foam, polyurethane foam, E
PDM foam or the like can be used, and polyurethane foam is rich in flexibility, so that it can follow the gap between the peripheral portion of the outlet and the frame body. Rubber foam has high durability, is more flexible than polyethylene foam, and has strong repulsion because it is a closed cell, and has good followability to the gap between the peripheral portion of the outlet and the frame.

(6) Since the EPDM foam has excellent heat insulating properties, it has a high dew condensation preventing effect, and has high flexibility and resilience, so that the work of mounting the frame can be performed reliably and easily. In addition, there is no gap due to high adhesion to the frame, no cold air enters and dew condensation occurs, and no dust accumulates.
In particular, the durability is excellent.

(7) Since the inner peripheral surface of the air outlet is tapered in the air blowing direction, the diffusion of cool air immediately after blowing from the vicinity of the opening end can be suppressed, and the vortex generation region can be reduced. Even if the distance from the opening end of the air outlet to the inner peripheral portion of the frame is reduced, a sufficient dew condensation preventing effect can be exhibited.

[Brief description of the drawings]

FIG. 1 is a front view showing an air outlet according to an embodiment.

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

FIG. 3 is an explanatory diagram showing a condensation prevention function.

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is an end view showing an air outlet according to another embodiment.

FIG. 6 is an end view showing an air outlet according to another embodiment.

FIG. 7 is a cross-sectional view showing a conventional dew condensation preventing structure for an air outlet.

[Explanation of symbols]

 10, 30, 40 Air outlet 11 Inner peripheral part 12 Open end 13 Peripheral part 14 Frame 15 Insulation material 15a Exposed part 17, 17a Cold air 18 Warm air 19 Distance 30a, 40a Inner peripheral surface

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-60958 (JP, A) JP-A-9-53853 (JP, A) JP-A 2-67838 (JP, U) JP-A 55- 96323 (JP, U) Japanese Utility Model 61-159731 (JP, U) Registered utility model 3003145 (JP, U) Registered utility model 3039360 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) F24F 13/06 F24F 1/00 401

Claims (1)

(57) [Claims] 1. A frame in which a peripheral portion of an air outlet of an air conditioner is covered with a heat insulating layer, and an inner peripheral portion is positioned on the surface of the heat insulating layer at an outer peripheral side of 0.5 mm to 5 mm from an opening end of the air outlet. An anti-condensation structure at the air outlet characterized by a body installed.