JP3728096B2 - Air conditioning system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioning system in which when air conditioned by an indoor unit is blown into a room from a blowout chamber, the periphery of a grill provided in the blowout chamber does not condense.
[0002]
[Prior art]
Conventionally, in order to cool and heat a plurality of rooms, it is common to provide an air conditioner corresponding to each room. However, this requires a large number of air conditioners, which is uneconomical.
[0003]
Therefore, a multi-type air conditioner that performs air conditioning by providing an indoor unit in each room and supplying refrigerant from the single outdoor unit to the indoor unit has begun to be provided on the market.
[0004]
However, even in this multi-type air conditioner, the same number of indoor units as the conditioned rooms are required, and if the number of conditioned rooms is large, the total piping distance of the refrigerant pipes becomes long, so that the refrigerant is circulated. However, it is necessary to use an outdoor unit with a large capacity, and there is a problem of lack of workability and maintainability due to a complicated refrigerant piping route.
[0005]
From such a viewpoint, the applicant of the present application has proposed an air conditioner having a configuration as shown in FIG. 7 in Japanese Patent Application No. 9-618.
[0006]
The air conditioner includes a compressor (not shown) that compresses the refrigerant and the like, and is installed outside the outdoor units 20a and 20b, behind the ceiling, under the stairs, and the like to exchange heat between the refrigerant and room air. The indoor units 10a and 10b, the blowout chambers 60a and 60b for blowing the conditioned air provided in each conditioned room to the conditioned room, and the conditioned air in the indoor units 10a and 10b are supplied to the blowout chambers 60a and 60b. The ducts 100a and 100b for guiding are provided.
[0007]
The blow chamber 60a provided on the floor side is provided with a grill 61 provided with a number of elongated grill holes 62 as shown in FIG. 8 (a), and is attached to the blow chamber 60b provided on the ceiling side. As shown in FIG. 8B, a trumpet-shaped grill 63 is attached.
[0008]
[Problems to be solved by the invention]
However, when cooling air is blown into the room from the blowout chamber 60a on the floor side during cooling, there is a problem that the periphery of the floor side grill 61 is condensed as shown in FIG. Shows condensation area).
[0009]
In addition, the grill hole 62 of the floor side grill 61 is relatively large, so that there is a disadvantage that small objects such as pencils fall from the grill hole 62 into the blowout chamber 60a.
[0010]
Accordingly, an object of the present invention is to provide an air conditioning system including a grill that prevents the above-described dew condensation and prevents small items from falling.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, an invention according to claim 1 is provided on an indoor unit that performs heat exchange between a refrigerant and room air, and on a floor and a ceiling of a plurality of conditioned rooms, and is provided behind the ceiling or under the floor. In an air conditioning system having a blowout chamber that is connected to an indoor unit by a duct and that blows out air-conditioned air from the blowout port to the conditioned room. A grille provided with a number of grill holes through which air-conditioned air passes and dew condensation prevention means is provided at the outlet of the blow-out chamber, and the indoor air that is drawn in by the cold air blown from the grill holes is cooled by the cold air. Of the many grill holes, the outermost corner of the grill hole is chamfered to a predetermined size and larger than the other corners so as not to contact the peripheral surface of the grill hole. Characterized in that the formation of the condensation preventing means.
[0016]
The invention according to claim 2 is characterized in that a net for preventing small articles from falling into the blowout chamber is disposed at the blowout outlet of the blowout chamber.
[0017]
The invention according to claim 3 is characterized in that the net is formed of a non-combustible material, and for example, even if a cigarette fires, the blowout chamber is prevented from burning by receiving the net.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. In addition, about the same structure as the past, description is suitably abbreviate | omitted using the same code | symbol.
[0019]
FIG. 1 is a conceptual diagram when the air conditioning system according to the present invention is installed in a house, and is composed of an air conditioner for the first floor and an air conditioner for the second floor. Is the same except that is different.
[0020]
Each air conditioner is provided in a conditioned room such as an outdoor unit 20a, 20b provided with a compressor (not shown) for compressing refrigerant, indoor air 10a, 10b for exchanging heat between the indoor air and the refrigerant, and a living room. Branch chambers 50a and 50b for distributing conditioned air from the blowout chambers 60a and 60b and the indoor units 10a and 10b to the conditioned rooms, the indoor units 10a and 10b, and the branch chambers 50a, 50b and blowing chambers 60a, 60b, etc. are connected to form ducts 100a, 100b that form air flow paths, and ventilation is provided with a heat recovery unit (not shown) that ventilates indoors and collects the heat of the ventilation air. The unit 30 is configured.
[0021]
The indoor unit 10 a in one ulcer of the air conditioner is disposed within a closed space, such as under the stairs, the closed space 40a is acting as a suction chamber.
[0022]
As a result, there is no need to provide a separate suction chamber, so that the manufacturing cost can be reduced.
[0023]
In the present embodiment, the outside air and the room air flow into the closed space 40a and the suction chamber 40b below the stairs at a constant ratio regardless of whether it is cooling or heating, but the ratio is changed. In such a case, a damper device or the like may be provided for these.
[0024]
The exhaust top 71 and the outdoor air inlet 80 of the exhaust duct 70, fit down over insect net or the like, not shown, insects and the like is prevented from entering the room.
[0025]
The blowout chambers 60a and 60b are box-shaped members formed of a heat insulating member such as foamed polystyrene. Ducts 100a and 100b are connected to one side surface, and air conditioning is provided at the upper part of the blowout chamber 60a and the lower part of the blowout chamber 60b. air outlet 64a for blowing out the air in the room, 64b are formed.
[0026]
In addition, as shown in FIG. 2, a net 65 for preventing dust falling is provided at the outlet 64a of the floor-side outlet chamber 60a (see FIGS. 2 (a) and 2 (b)), and a grill hole 67 is formed thereon. A large number of rows of grills 66 are arranged (see FIG. 2C).
[0027]
Since the eyes of the net 65 are sufficiently smaller than the size of the grill hole 67, even if a small object such as a pencil falls from the grill hole 67, it can be received by the net 65, so put your hand on the bottom of the deep blowout chamber 60 a. There is no need to put it and pick up the fallen object.
[0028]
The net is made of non-combustible material such as aluminum or iron metal. As a result, for example, even if the fire of a cigarette falls, the blowout chamber does not burn by receiving this.
[0029]
3 shows a top view of the grill 66, and FIG. 4 shows a cross-sectional view taken along arrow AA in FIG. As can be seen from the figure, the corner of the grill hole 67 is chamfered, and the chamfer of the outermost peripheral corner of the outermost grill hole 67 (shaded area in FIG. 3) is the chamfered corner of the other portion. Condensation prevention means is constructed.
[0030]
For example, the chamfer on the outermost peripheral side has a radius of 5 mm and the chamfers of other corners have a radius of 2 mm.
[0031]
In addition, the solid line arrow in FIGS. 4-6 shows the flow of cold air, and the dotted line arrow has shown the flow of room air.
[0032]
The reason for changing the size of the corner chamfer in this way is as follows. That is, the size of chamfering as in the prior art uniform, and smaller, as shown in FIG. 5, by the cold air is blown from the grill holes 6 2 in the room, the indoor air is caught in the cold air while (dragged while) approaches the grill holes 6 2 to flow grill peripheral portion, and rises.
[0033]
FIG. 5A shows a partial top view of a conventional grill 61, and FIG. 5B shows a partial cross-sectional view thereof.
[0034]
For this reason, indoor air is cooled and condensed by flowing through the surrounding area of the grill cooled by the cold air (the region marked by a circle in FIG. 5B) (FIG. 5A). The area marked with x indicates the dew condensation area).
[0035]
In other words, if the size of the chamfer is small, the cold air blown out from the grill hole does not spread over a wide area in the vicinity of the grill hole, so that the indoor air enters and condenses there.
[0036]
By the way, between the adjacent grill holes 62 is filled with cold air, so there is no inflow of room air and no condensation occurs.
[0037]
Therefore, as described above, the chamfering of the outermost grill hole 67 is made larger than the other to reduce the amount of room air entrained, and the entrained room air contacts the grill peripheral portion cooled by cold air. By preventing this, condensation is prevented.
[0038]
In order to obtain the effect of the present invention, it is only necessary to provide the above-mentioned chamfering only at the outermost peripheral corner of the outermost peripheral grill hole 67, and the size of all the chamfers is made uniform, and It is clear that the chamfering of the size described above may be used.
[0039]
Further, the present invention is not limited to the above-described configuration. As shown in FIG. 6, the surface of the grill 66 is partially recessed, and a grill hole 69 is formed in the recess 68. If the distance from the grill hole 69 is ensured, the above-described effects can be obtained.
[0040]
【The invention's effect】
As described above, according to the first aspect of the present invention, a large number of grill holes through which air-conditioned air passes through the outlet of the outlet chamber disposed on the floor side, and cold air from the grill holes. When the air is blown out, a grill is provided with a dew condensation prevention means for preventing the room air around the grill hole from being cooled and condensed by the cold air. Among the many grill holes, the outermost corner of the grill hole located on the outermost side is larger than the other corners so that the indoor air that is entrained does not come into contact with the peripheral surface of the grill hole that is cooled by the cold air. and, by chamfering at a predetermined magnitude, since the formation of the condensation preventing means, when the cool air is blown out from the grille holes, while the indoor air around the grill holes are caught in the cold, the cold air Simple structure that the condensation is more cooled and can be inexpensively prevented.
[0045]
According to the second aspect of the present invention, since the net is disposed at the outlet of the blowout chamber, small items can be prevented from falling into the blowout chamber. Further, according to the invention of claim 3, since the net is formed of a non-combustible material, for example, even if a cigarette falls, the blowout chamber does not burn by receiving this.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an air conditioning system applied to the description of an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of a blowing portion of a blowing chamber disposed on the floor side.
FIG. 3 is a top view of the grill.
FIG. 4 is a partial cross-sectional view of a grill.
FIG. 5 is a diagram applied to explain the reason why the grill is condensed.
FIG. 6 is a diagram showing a configuration of another grill.
FIG. 7 is a diagram showing a configuration of an air conditioning system applied to the description of the prior art.
FIG. 8 is a diagram showing a configuration of a grill.
[Explanation of symbols]
10a, 10b Indoor unit 20a, 20b Outdoor unit 50a, 50b Branch chamber 60a, 60b Outlet chamber 64a, 64b Outlet 65 Net 66 Grill 67, 69 Grill hole 68 Recess

Claims (3)

An indoor unit that performs heat exchange between the refrigerant and the indoor air, and is connected to the indoor unit by ducts that are provided on the floor and ceiling of a plurality of conditioned rooms and that are disposed under the ceiling or under the floor. An air conditioning system having a blowout chamber for blowing air conditioned air from a blowout port to a conditioned room,
A number of grill holes through which air-conditioned air passes at the outlet of the outlet chamber disposed on the floor side;
Providing a grill having dew condensation preventing means for preventing the indoor air around the grill hole from being cooled and condensed by the cold air when the cold air is blown out from the grill hole ;
The outermost periphery of the grill hole located on the outermost periphery side among the plurality of grill holes so that the indoor air that is engulfed by the cold air blown out from the grill hole does not contact the peripheral surface portion of the grill hole that is cooled by the cool air. An air conditioning system characterized in that the dew condensation prevention means is formed by chamfering a corner on a side larger than other corners and with a predetermined size . Wherein the outlet chamber outlet of claim 1 Symbol mounting the air conditioning system, characterized in that the small items is disposed a net which receives as falling into the outlet chamber. The air conditioning system according to claim 2 , wherein the net is made of a noncombustible material.

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