JPS647284B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ceiling-embedded air conditioner that is equipped with a blower in the center and a heat exchanger arranged around the blower to reduce the height of the product.

Conventional structure and its problems Traditionally, ceiling-mounted air conditioners (hereinafter referred to as air conditioners) have an air intake section in the center and discharge sections on the left and right sides of the air conditioner. If the height of the product is lowered by placing the containers on almost the same horizontal plane, air can only blow in two directions: left and right. That is, its internal configuration is as shown in FIGS. 1 and 2. A represents the main body installed embedded in the ceiling, and the air sucked in from the suction part b of the decorative panel a' exposed on the ceiling surface is fed by a single-suction centrifugal fan c.
The air-conditioning flow is guided by the guiders d', d'' of the casing d, blown out from the outlet openings l, l' in both left and right directions, and heat exchanged by the heat exchangers f, f'. From the blow-off parts g and g', there are 2 parts on the left and right outside the main body.
It is blown out in the direction. However, in the case of an air conditioner, when considering restrictions on installation locations and uniformity of indoor temperature distribution, it is not sufficient to blow air in two directions as described above. Therefore, for this purpose, it is conceivable to form blow-off portions in four directions in the decorative panel a' to provide air-flow in four directions. However, the structure of the casing d in a single-suction centrifugal fan c is generally one- or two-direction blowout, and in order to blow out the air-conditioned air from the four directions of the main body, it is necessary to The blown air is distributed through an air path structure such as a duct, but in this case, the air path structure becomes complicated and the pressure loss due to the air path also increases, which has the disadvantage of lowering the efficiency of the fan and motor. It was hot.

Purpose of the Invention In order to solve the above-mentioned drawbacks, the present invention uses a single fan, and by arranging the scroll of the casing, the deflection plate, and the heat exchanger, air-conditioning flow is blown out from the blow-off portions in four directions of the main body. The purpose of this invention is to provide an air conditioner that does not have a complicated configuration or pressure loss due to air path configurations such as ducts that divide the flow into four directions.

Structure of the Invention In order to achieve this object, the present invention forms a fan casing equipped with a pair of scrolls and a wind deflection plate around one fan, and has a length corresponding to the amount of air blown to the casing. By arranging an L-shaped heat exchanger with sections, that is, a long side and a short side, it is possible to efficiently blow out air conditioning flow in four directions.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the figure, 1 shows the main body of the ceiling-mounted air conditioner that is buried in the ceiling T, 2 shows the main body of the ceiling-embedded air conditioner, which is attached to the main body 1, and has a suction part A in the center, four blow-off parts B, C on the outer periphery of the suction part A, The decorative panels formed with D and E are shown. The interior of the main body 1 includes a suction grill 2a provided in the suction portion A of the decorative panel 2, a partition plate 4, and an orifice 5.
A suction chamber 3 partitioned by a suction chamber 3, a blowing chamber 8 in which a single suction centrifugal fan 6 is disposed and partitioned by a casing 7, which will be described later, heat exchangers 9 and 9' are disposed, and a main body 1 and a partition plate 4. It is composed of blowing chambers 11, 11', 12, and 12' which are separated by a rotation angle of 90 degrees and communicate with the blowing sections B, C, D, and E. The fan 6 has the suction side connected to the suction chamber 3.
It is arranged facing the orifice 5 of and is driven by a motor 13 attached to the top plate 1a. Further, the heat exchangers 9, 9' have long parts 9a, 9a' and short parts 9.
It is bent into an approximately L shape at b and 9b',
It is arranged in a symmetrical position so as to surround the fan 6 in substantially the same plane as the fan 6.

On the other hand, the casing 7 is integrally formed of a heat insulating material such as polystyrene foam, and has a dew receiving part 7' for receiving drain water from the heat exchangers 9 and 9', and a fan in the center, as shown in FIG. The fan-side curved surface 7c of the scroll 7a, 7a' is further provided with an opening 7'' in which an orifice 5 is arranged as a suction part for the scroll 6, and scrolls 7a, 7a' and wind direction deflecting plates 7b, 7b'.
7c' and the heat exchanger side curved surface 7 of the wind direction deflection plates 7b and 7b'
d, 7d' form the main air outlet 14, 14', and the fan side curved surface 7 of the wind direction deflection plates 7b, 7b'
Auxiliary air outlets 15, 15' are formed by the heat exchanger side curved surfaces 7f, 7f' of the scrolls 7a, 7a'. The L-shaped heat exchangers 9, 9' have longitudinal parts 9a, 9a' facing the main air outlets 14, 14', and short parts 9b, 9'.
b' is arranged opposite to the auxiliary air outlet 15, 15'. In addition, blowing chambers 11, 11' are arranged corresponding to the long sides 9a, 9a' of the L-shaped heat exchangers 9, 9', and blowing chambers 12, 12' are arranged corresponding to the short sides 9b, 9b'. are arranged, respectively, blowing chambers 11 and 12,
11' and 12' are partitioned by partition plates 16 and 16'.

In this configuration, air is sucked in from the suction chamber 3 by the fan 6 driven by the motor 13,
It is discharged from the fan 6 and blown onto the heat exchangers 9, 9' through the main outlets 14, 14' and the auxiliary outlets 15, 15' formed by the scrolls 7a, 7a' and the wind deflection plates 7b, 7b'. . In this case, the auxiliary air outlets 15, 15' are arranged so that a part of the air discharged from the fan 6 is deflected by the wind direction deflecting plates 7b, 7b', and the air volume is distributed toward the main air outlets 14, 14'. is designed to be larger than the auxiliary air outlet 15, 15'. This is because the long parts 9a, 9a' of the L-shaped heat exchanger are better than the short parts 9b, 9.
This is because it requires a larger air volume than b', and is based on the efficiency of the heat exchanger. Also, the air blown out from the main air outlets 14, 14' and the auxiliary air outlets 15, 15' is directed to the heat exchanger side curved surfaces 7d, 7, respectively.
Since the air adheres to d', 7f, and 7f' due to the Coanda effect and flows, the discharged air hits the entire heat exchanger 9, 9' uniformly. Due to the air flow and its distribution, the blown air passes uniformly through the heat exchangers 9 and 9' and is distributed to the blowing chambers 1 in four directions.
1, 11', 12, and 12', and is blown into the room from the blowing portions B, C, D, and E.

Effects of the Invention As is clear from the above explanation, the ceiling-embedded air conditioner according to the present invention has two scrolls and two wind deflection plates provided in the casing provided around the fan, by symmetrically arranging two scrolls and two wind deflection plates. A fan casing with directional blowing can be realized, and the required air volume can be distributed and blown to the L-shaped heat exchanger placed opposite each of the four directional blow-off ports, and the curved surface of the wind deflection plate can prevent the Coanda effect. By using this, the blowout flow can be attached to the curved surface and can be blown uniformly over the entire L-shaped heat exchanger. This allows each outlet to be positioned at a rotation angle of 90°,
In this case, the air-conditioning flow is uniformly blown out from these four blow-off parts, which has the effect of eliminating restrictions on the installation location and contributing to a uniform temperature distribution in the room.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional ceiling-embedded air conditioner, Figure 2 is a cross-sectional view taken along the -' line in Figure 1,
FIG. 3 is a cross-sectional view of a ceiling-embedded air conditioner according to an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along the line -' in FIG. 3, and FIG. 5 is a perspective view of the casing. 6...fan, 7...casing, 7a, 7
a'...scroll, 7b, 7b'...wind deflection plate,
9,9'...L-shaped heat exchanger, A...Suction part, B,
C, D, E...Blowout section.

Claims (1)

[Claims] 1. A centrifugal fan disposed approximately in the center inside the main body facing the suction portion on the lower surface, and a longitudinal portion and a short portion disposed on the outer periphery of the fan and communicating with the blow-off portion formed on the outer periphery of the suction portion. A pair of substantially L-shaped heat exchangers, a casing that surrounds the fans and blows out an air flow to the heat exchanger, the casing includes a pair of scrolls, a main outlet formed by the scrolls, and A ceiling-embedded air conditioner characterized by being equipped with a pair of wind deflection plates that deflect a portion of the airflow blown out from the main outlet.