JP3148536B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner which includes a heat exchanger and a blower in a main body and blows air after heat exchange.

[0002]

2. Description of the Related Art As a conventional apparatus of this kind, Japanese Patent Publication No. Sho 61
Japanese Patent Application Laid-Open No. 53613/1986 and Japanese Utility Model Publication No. 61-46333 are known. In addition to these known technologies, in order to control the flow of wind blown out of the heat exchanger, FIG.
Has been proposed with a baffle plate 58 as shown in FIG. That is, in the air conditioner shown in FIG.
A blower 42, a heat exchanger 44, and a partition plate 46 are housed in the inside 0, and a baffle plate 58 made of sheet metal is provided on the top surface 52 of the main body 40, and the wind flowing along the top surface 52 Is directed to the center of the heat exchanger 44 to prevent the wind from being biased.

[0003]

However, the conventional air conditioner having a baffle plate shown in FIG. 4 has a problem that the baffle plate 58 causes wind turbulence to generate noise. . Also, the baffle plate 58 is
There is also a problem that the number of parts is increased because it is necessary to attach to the side.

Accordingly, an object of the present invention is to provide an air conditioner capable of reducing noise and reducing the number of parts.

[0005]

According to a first aspect of the present invention, there is provided a heat exchanger having a heat exchanger, a drain pan, and a blower in a main body. In the air conditioner in which the arranged machine room is partitioned by a partition plate , the lower surface of the drain pan arranged below the heat exchanger and the lower surface of the heat exchanger substantially coincide with each other in height.
The lower part of the blower disposed so as to extend, a sound insulating material is provided on the top surface, the partition plate is disposed inclined with respect to the top surface of the main body, the blower has a blower port The heat exchanger is inclined toward the top surface so as to protrude from the partition plate, and the heat exchanger is tilted with respect to the top surface and tilted so as to form an acute angle with respect to the partition plate. It is arranged. In a second aspect of the present invention, in the heat exchanger, the top surface side is open with respect to the partition plate.
It is arranged to be inclined in the shape of a letter.

A second invention provides an air conditioner in which a heat exchanger and a blower are provided in a main body, and a heat exchange room in which the heat exchanger is arranged and a machine room in which the blower is arranged are partitioned by a partition plate. The partition plate is disposed so as to be inclined with respect to the top surface, and the blower is disposed so as to be inclined toward the wall surface so that an air outlet protrudes from the partition plate, and the heat exchange is performed. The container is arranged to be inclined in a V-shape in which the top surface side is open with respect to the partition plate.

[0007]

According to the first aspect of the present invention, the air sucked into the main body of the air conditioner is blown out from the blower opening of the blower toward the wall surface side of the main body, flows on the wall surface so as to be reflected, and generates heat. The heat is exchanged through the heat exchanger toward the exchanger. By blowing the wind once toward the wall surface side of the main body in the ventilation passage from the blower to the heat exchanger, it is possible to uniformly blow the entire heat exchanger and reduce noise and beat. In addition, since there is no baffle plate as in the conventional case, noise can be prevented and the number of parts can be reduced.

[0008] According to the second invention, specifically, the predetermined wall surface of the first invention is a top surface, and the heat exchanger and the blower of the blower are inclined in a V-shape with respect to the top surface side. Since the arrangement is made so as to be arranged, noise and hum can be reduced as in the first invention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the air conditioner 1 is a ceiling-embedded type air conditioner that is suspended and fixed in a ceiling space via a suspension fitting 8 and a suspension bolt 12. , A suction port 3 on one side of the decorative plate 2,
This is a so-called one-way type air conditioner in which an outlet 4 is opened on the other side, and the air sucked from the inlet 3 is heat-exchanged and then blown out from the outlet 4.

The decorative plate 2 is provided so as to be detachable from the main body 6.
Is exposed.

Inside the main body 6, a blower 5, a heat exchanger 7, a drain pan 28 (see FIG. 2) and an electric box 9 for controlling the operation are provided.
As shown in FIG. 2, the air sucked from the inlet 3 is sent to the heat exchanger 7 by the blower 5, where the heat is exchanged, and then the air is blown out from the outlet 4. Is done.

The heat exchanger 7 includes a blower 5 as shown in FIG.
And heat exchange by passing the air (wind) sent by the above. As shown in FIG. 3, a refrigerant inlet / outlet pipe 11 for introducing a refrigerant into the heat exchanger 7 is connected to the heat exchanger 7,
Refrigerant is introduced from an outdoor unit (not shown).

A sound insulating material (sound absorbing material) is provided on the top surface 6a of the main body 6.
6b are arranged.

Inside the main body 6, there is provided a partition plate 15 for partitioning into a heat exchange room T in which the heat exchanger 7 is arranged and a machine room S in which the blower 5 is arranged. The lower end 15a of the partition plate 15 is fixed to the side surface 6c of the main body 6, and the other end 15c is fixed to the top surface 6a. The partition plate 15 is arranged at an angle α so as to form an acute angle with the top surface 6 a of the main body 6. By thus inclining the angle α of the partition plate at an acute angle, the space in the machine room is minimized and the air outlet 5a of the blower 5 is
can be inclined with respect to a. By inclining the air outlet 5a with respect to the top surface 6a, the outer edge of the wind heading toward the heat exchanger 7 reflects on the top surface 6a. It is possible to reduce noise and hum due to the air from the air outlet 5a. The angle α of the partition plate 15 is preferably set in an angle range of 60 degrees or more and 80 degrees or less,
In the present embodiment, it is 70 degrees.

If the angle α of the partition plate 15 is less than 60 degrees, the angle of intrusion into the top surface 6a becomes too large, and the ventilation resistance becomes large, so that a smooth air flow cannot be obtained, and noise is reduced. This is because the reduction may not be sufficiently achieved.

If the angle α exceeds 80 degrees, the angle of inflow of the blown air into the top surface 6a is too small, the flow of the wind along the top surface 6a becomes large, and the noise generated due to the imbalance in the flow of the wind is generated. This is because the reduction may not be sufficiently achieved.

On the other hand, the heat exchanger 7 is arranged such that its heat exchange surface 7a is inclined at an angle β with respect to the top surface 6a of the main body 6. Thus, the air outlet 5a (the partition plate 15) and the heat exchanger 7 are arranged so as to be substantially V-shaped with respect to the top surface 6a, as shown in FIG.

The angle β of the heat exchanger 7 is preferably 6
The angle range is set to 5 degrees or more and 80 degrees or less, and is 75 degrees in the present embodiment.

If the angle β of the heat exchanger 7 is less than 65 degrees, it may not be possible to flow the blast air over the entire heat exchange surface 7a, and the angle β of the heat exchanger 7 may be 75 degrees. This is because if the temperature exceeds the above, the blown air may not reach the entire heat exchanger 7 and the heat exchange efficiency may decrease.

Also, on the inner surface of the top surface 6a of the main body 6, FIG.
As is apparent from comparison with the conventional example, no baffle plate is provided. Therefore, the baffle plate does not cause noise due to airflow resistance, and the number of parts can be reduced to reduce costs.

The blower 5 is fixed to the above-mentioned partition plate 15, and the blower port 5 a of the blower 5 projects from the opening 15 d of the partition plate 15 toward the heat exchanger 7. As described above, by projecting the air outlet 5a of the blower 5 from the opening 15a toward the heat exchanger 7, noise can be reduced and the machine room S can be suppressed to a minimum space.

Here, the attachment of the blower 5 will be described with reference to FIG. The motor 20 for driving the blower 5 is
It is held by the mounting base 22. The mounting base 22 has a substantially U-shaped cross section, and is preferably made of a metal plate. A plurality of points, spot welds 24a, are securely provided on one surface 15b of the partition plate 15 described above. Fixed.

As described above, the mounting table 22 for the motor 20 is
Is fixed by spot welding 24a compared with the case where the mounting base is fixed by screws.
This is because the axis of the shaft 4 does not move, and noise is minimized when the fan of the blower 5 rotates.

Next, the operation of this embodiment will be described.

During operation of the air conditioner 1, the blower 5 is driven by the motor 20 shown in FIG.
As shown by a solid arrow R1 in FIG. 2, the air sucked from the suction port 3 on one side turns into a wind from the blowing port 5a of the blower 5 and is directed to the sound insulating material 6b on the top surface 6a of the main body 6. Blown out in the direction.

A part of the wind hits the sound insulating material 6b on the top surface 6a of the main body 6, is absorbed and reaches the heat exchanger 7, and the rest of the wind is reflected by the top surface 6a as shown by the solid arrow R2. To reach the heat exchanger 7. At this time, part of the wind
The noise is eliminated by the sound insulating material 6b, and no sudden flow along the top surface 6a is generated. Therefore, noise and beat are not generated, and the noise can be reduced. Then, the wind that has passed through the heat exchanger 7 and undergoes heat exchange is blown out from the outlet 4 of the decorative board 2.

Further, since the heat exchanger 7 is arranged so as to be inclined so as to form a V-shape with the blower port 5a of the blower, the air directly from the blower port 5a or on the top surface 6a can be smoothly heated. It can be guided to the exchanger 7 and noise can be reduced. FIG. 5 is a diagram showing that the noise of the air conditioner of the present invention is reduced by comparing the air conditioner of the present invention with a conventional air conditioner.

FIG. 5 is a view showing a state immediately below the air outlet 4 of the air conditioner.
The result of measuring the band level (dB) for each frequency band at m is shown. The solid line indicates the present invention, and the broken line indicates the measurement result of the conventional technique (the state of FIG. 4). As is clear from FIG. 5, a reduction in noise was confirmed in the present invention over the entire frequency range as compared with the prior art. This is because, in the prior art, the wind discharged from the air outlet 25a directly hits the sheet metal baffle plate 58,
According to the present invention (see FIG. 2), the wind discharged from the blowing port 5a is
This is considered to be because the water flows along the sound absorbing material (sound insulating material) 5b on the top surface 6a.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the present invention.

For example, although the embodiment shows a one-way type air conditioner, the present invention is not limited to this, and can be applied to a so-called two-way type air conditioner. In addition, although the embodiment of the present invention shows a ceiling-suspended type air conditioner, the present invention can be applied to other types.

[0032]

According to the first aspect of the present invention, the partition plate of the air conditioner is disposed to be inclined with respect to the wall surface of the main body, and the blower is directed toward the wall surface so that the blow port protrudes from the partition plate. And the heat exchanger is inclined with respect to the wall surface and is arranged so as to form an acute angle with the partition plate, so that the wind blown out from the blower is In addition, air can be uniformly blown to the entire heat exchanger, and noise and hum can be reduced. Moreover, since there is no baffle plate as in the past and the wall surface is flat,
It is difficult to emit noise due to air from the air vent on the wall.

According to the second aspect of the present invention, the heat exchanger and the blower of the blower are arranged so as to be inclined in a V-shape whose top side is open. The beat can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an air conditioner of the present invention.

FIG. 2 is a longitudinal sectional view of the air conditioner of FIG.

FIG. 3 is a cross-sectional view of the air conditioner of FIG.

FIG. 4 is a longitudinal sectional view of a conventional air conditioner.

FIG. 5 is a graph showing measured noise.

[Explanation of symbols]

 Reference Signs List 5 blower 5a blower opening 6 main body 6a top surface (wall surface) 7 heat exchanger 15 partition plate (partition member)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 58-6125 (JP, U) Japanese Utility Model Sho 60-1776029 (JP, U) Japanese Utility Model Hei 5-42922 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) F24F 1/00 306 F24F 1/00 401

Claims (2)

(57) [Claims] 1. An air conditioner having a heat exchanger, a drain pan, and a blower in a main body thereof, wherein a heat exchange room in which a heat exchanger is arranged and a machine room in which a blower is arranged are partitioned by a partition plate. Heat the drain pan located at the bottom of the exchanger
Arrange so that the lower surface of the exchanger and the lower surface are approximately the same in height.
A sound insulating material is provided on the top surface, the partition plate is arranged to be inclined with respect to the top surface of the main body, and the blower of the blower has a blower port having the partition plate. The heat exchanger is arranged to be inclined toward the top surface side so as to protrude therefrom, and the heat exchanger is arranged to be inclined with respect to the top surface and to form an acute angle with respect to the partition plate. An air conditioner characterized by being performed. 2. The air conditioner according to claim 1, wherein the heat exchanger is arranged so as to be inclined in a V-shape in which the top surface side is open with respect to the partition plate.