JPH0949640A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner of which the noise during operation can be reduced. SOLUTION: In a unit main body 22 of an air conditioner, a fan 26 and a heat-exchanger 38 which is formed by being bent into an approx. rectangular shape so that it may surround the fan 26, are housed. Then, tube plates 49 of the heat-exchanger 38 are connected with a partitioning plate 28, and a drain pump 30 is housed in a space 56 on the outside of the heat-exchanger 38, which is partitioned by the partitioning plate 28, for the air conditioner. The heat-exchanger 38 is formed in such a manner that the distance between the tube plates 49 may become smaller, and for the partitioning plate 28, a part 29 which surrounds the drain pump 30 is projected to the inside of the heat-exchanger 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner installed in a ceiling, for example.

[0002]

2. Description of the Related Art In general, as shown in FIG. 5, a fan 2 and a heat exchanger 3 formed by bending it into a substantially rectangular shape so as to surround the fan 2 are housed in a unit body 1 of an air conditioner. , Connect the tube plates 4 of the heat exchanger 3 with the partition plate 5,
Space 6 outside the heat exchanger 3 partitioned by the partition plate 5
It is known that the drain pump 7 is housed therein. In this type, the indoor air sucked from the suction port 8 is heat-exchanged by the heat exchanger 3 and blown out from the blowout ports 9 in four directions. The partition plate 5 is provided to prevent air from leaking from the vicinity of the drain pump 7, the mechanical valve 7a, and the like.

[0003]

However, in the conventional air conditioner that does not have the case of the fan 2, the noise during operation greatly affects the shape of the heat exchanger 3. In particular, there is a problem that the partition plate 5 of the heat exchanger 3 disturbs the flow of wind and causes noise.

In order to solve the above problems, an object of the present invention is to provide an air conditioner which can reduce noise during operation.

[0005]

According to a first aspect of the present invention, a fan is housed in a unit body of an air conditioner, and a heat exchanger formed by bending the fan into a substantially rectangular shape so as to surround the fan,
In an air conditioner in which the tube plates of this heat exchanger are connected by a partition plate, and a drain pump is housed in the space outside the heat exchanger partitioned by the partition plate, the heat exchanger reduces the distance between the tube plates. The partition plate is small in size, and a portion surrounding the drain pump is made to project to the inside of the heat exchanger.

According to a second aspect of the present invention, a fan and a heat exchanger formed by bending it into a substantially rectangular shape so as to surround the fan are housed in the unit main body of the air conditioner, and the heat exchanger has a tube plate between the tube plates. In the air conditioner in which the drain pump is housed in the space outside the heat exchanger partitioned by the partition plate, the heat exchanger forms a small distance between the tube plates, and the partition plate is The portion surrounding the drain pump is projected inside the heat exchanger so as to extend substantially linearly.

According to these aspects of the invention, since the heat exchanger is formed with a small distance between the tube plates, the turbulence of the wind is reduced and the noise during operation can be reduced. Further, if the portion of the partition plate surrounding the drain pump is extended substantially linearly, the turbulence of the wind is further reduced, and the noise during operation can be further reduced.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a bottom view showing a unit main body of an air conditioner according to the present invention, FIG. 2 is a view showing the unit main body and a decorative panel, and FIG. 3 is FIG.
It is sectional drawing which shows the unit main body of FIG. In the figure, 10 indicates a ceiling-embedded air conditioner, and this air conditioner 10 is suspended and fixed in a ceiling space 11 of a building 40, as shown in FIG. The air conditioner 10 is a four-way air conditioner, has a unit body 22 and a decorative panel 14, and a suction port 16 is opened at the center of the decorative panel 14, and the suction port 16 of the decorative panel 14 is opened. An air outlet 18 is opened around the. Four bolts 42 are set vertically downward from the building 40, and these bolts 42 are used as the hanging fittings 44 of the unit main body 22.
Is fastened to.

In the unit body 22 of the air conditioner 10, a fan motor 24, a turbo fan 26, a partition plate 2 are provided.
8, drain pump 30, drain outlet 32, refrigerant pipe 3
4, an electrical equipment box 36 for operation control, a heat exchanger 38, and the like are arranged.

The turbo fan 26 is arranged corresponding to the fan nozzle 26a. The heat exchanger 38 is bent into a substantially rectangular shape, and is arranged near the four outlets 18 so as to surround the turbofan 26. The partition plate 28 connects the tube plates 49, 49 of the heat exchanger 38, and in the space 56 outside the heat exchanger 38 partitioned by the partition plate 28, the drain pump 30, the drain drainage port 32, and the indoor mechanical valve 60. Etc. are housed. The partition plate 28 prevents the air from the turbofan 26 from leaking during operation, and the presence of the partition plate 28 ensures that the heat-exchanged air is blown into the room R from the four outlets 18. It has become so.

According to this embodiment, as shown in FIG. 1, the distance between the tube plates 49 of the heat exchanger 38 is smaller than that of the conventional one (see FIG. 5), and In the partition plate 28 connecting the tube plates 49, 49, a portion 29 surrounding the drain pump 30 projects inside the heat exchanger 38. This makes it easy to house the drain pump 30, the indoor mechanical valve 60, etc. in the space 56 outside the heat exchanger 38 partitioned by the partition plate 28. A portion 29 of the partition plate 28 that surrounds the drain pump 30 may extend substantially linearly. At this time, both ends of the linearly extending portion 29 are connected to the bent portions 31 and 31, and the bent portions 31 and 31 are closer to each other and arranged than the conventional one (FIG. 5). , 49.

The fan motor 24 is a turbo fan 26.
The room air is sucked in through the suction port 16 by being rotated, and is sent to the heat exchanger 38. The air that has been heat-exchanged by the heat exchanger 38 and is air-conditioned is blown out from the air outlet 18 into the room R. To be done. As shown in FIGS. 2 and 3, a dust collector (air filter) 20 is provided at the suction port 16 of the decorative panel 14 of the air conditioner 10.

Next, the operation of this air conditioner will be described. When the fan motor 24 in the main body casing 22 of FIG. 1 is operated, the turbo fan 26 rotates, so that the room R
2 is sucked in through the suction port 16 shown in FIG.
It is cleaned at 0, is sent to the heat exchanger 38, is heat-exchanged at the heat exchanger 38, and is then blown into the room R from the blowout ports 18 at four places.

In this case, the air sucked from the suction port 16 does not reach the vicinity of the drain pump 30, the drain drain port 32, the indoor mechanical valve 60, etc. due to the presence of the partition plate 28 located at the corner of the unit body 22. The indoor air that has not leaked and has undergone heat exchange through the four outlets 18 is almost certainly blown into the room R. According to this, as shown in Examples described later, it is possible to reduce the noise during operation as compared with the conventional one.

[0015]

EXAMPLE Referring to FIGS. 4 and 6, comparing the noise test data according to this embodiment (FIG. 4) with the noise test data according to the conventional example (FIG. 6), it is clear from each figure. As described above, the operating noise is reduced by the device according to the present embodiment by about 2 dB or more as compared with the conventional device. That is, in the case of FIG. 4, the noise is 36.1d.
B, and in the case of FIG. 6, the noise is 38.1 dB.

This is because the partition plate 28 is composed of a straight line portion 29 and bent portions 31 and 31, and the straight line portion 29 is located at substantially the same position as the conventional one.
Is bent outward from the extension line of the straight line portion 29, and the bent portion is changed to the tube sheet 49,
It is because it is connected to 49.

As a result of a noise test using various actual machines, it was found that at least the heat exchanger 38 should be formed with a small distance between the tube plates 49, 49. Further, if the distance between the tube plates 49, 49 is made too small, the drain pump 30 cannot be efficiently and compactly housed outside the partition plate 28 that connects them, so that the partition walls are not affected by noise. It has been found that it is better to project a part 29 of the plate 28 inside the heat exchanger 38.

According to the above embodiment, the partition plate 28
The part 29 of the heat exchanger 38 extends substantially linearly, but the present invention is not limited to this, and the part protruding inside the heat exchanger 38 may have an arc shape or a triangular shape. .

The present invention has been described above according to the embodiment, but the present invention is not limited to this embodiment. For example, although the four-way air conditioner 10 is described in the above embodiment, the present invention also applies to other types of air conditioners, such as a two-way air conditioner. Applicable.

[0020]

As described above, according to the present invention, the heat exchanger is formed with a small distance between the tube plates, and the partition plate projects the portion surrounding the drain pump to the inside of the heat exchanger. Therefore, the turbulence of the wind from the fan is small, and the noise during operation can be reduced compared to the conventional one.

[Brief description of drawings]

FIG. 1 is a bottom view showing an embodiment of a unit body of an air conditioner of the present invention.

FIG. 2 is a bottom view showing a unit main body of the air conditioner of FIG. 1 and its decorative panel.

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

FIG. 4 is a diagram showing noise measurement data of the air conditioners of FIGS. 1 to 3.

FIG. 5 is a bottom view showing a conventional air conditioner.

FIG. 6 is a diagram showing noise measurement data of a conventional air conditioner.

[Explanation of symbols]

 22 Unit Main Body 26 Turbo Fan (Fan) 28 Partition Plate 29 Part 30 Drain Pump 38 Heat Exchanger 49 Tube Plate 56 Space

Front page continuation (72) Inventor Masazumi Makino 2-5-5 Keihan Hon-dori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Kazuki Fukushima 2-5-5 Keihan-hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A fan in a unit body of an air conditioner,
This fan accommodates a heat exchanger formed by bending it into a substantially rectangular shape so as to surround it, connects the tube plates of this heat exchanger with a partition plate, and the space outside the heat exchanger partitioned by this partition plate. In the air conditioner containing the drain pump in the heat exchanger, the heat exchanger is formed to have a small distance between the tube plates, and the partition plate projects the portion surrounding the drain pump to the inside of the heat exchanger. And an air conditioner. 2. A fan in the unit body of the air conditioner,
This fan accommodates a heat exchanger formed by bending it into a substantially rectangular shape so as to surround it, connects the tube plates of this heat exchanger with a partition plate, and the space outside the heat exchanger partitioned by this partition plate. In the air conditioner containing the drain pump in the heat exchanger, the heat exchanger is formed to have a small distance between the tube plates, and the partition plate is provided inside the heat exchanger so as to extend substantially linearly in a portion surrounding the drain pump. An air conditioner characterized by being projected to the inside.