JPH05187649A - Ceiling-embedded type air conditioner - Google Patents

Abstract

PURPOSE:To lower an air sound generated when blowoff air passes through a heat exchanger during the operation of an air conditioner. CONSTITUTION:A straightening plate 12 which has two cut-erect parts 13 projecting inside a heat exchanger 5 and has a part for fitting to a support part 15 of the heat exchanger 5 and to a housing 1 is formed monolithically of a steel plate or the like and fitted to the vicinity of the downstream side of a joint plate jointing the ends of the heat exchanger 5. The air flowing inside the joint plate when it is blown off by a blower 2 is straightened by making it strike on the cut-erect parts 13 of the straightening plate 13, and then it is made to pass through the heat exchanger 5, according to this constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded air conditioner, and more particularly to a noise prevention structure thereof.

[0002]

2. Description of the Related Art FIGS.
It is the conventional ceiling-embedded air conditioner disclosed in Japanese Patent No. 722. In the figure, 1 is a housing made of a steel plate in which an indoor unit of a ceiling-embedded air conditioner is housed, 2 is a blower, 3 is a blade of the blower 2, 4 is a motor for driving the blower 2, 5 Is a heat exchanger arranged in a substantially C-shape around the blower 2, 11 is a wall-shaped joint plate protruding from the top surface of the housing 1 that joins the ends of the heat exchanger 5, 6 Is a drain pan disposed below the heat exchanger 5. Reference numeral 7 denotes a decorative panel exposed on the indoor side of the air conditioner, and has a suction port 8 for sucking the indoor air and an air outlet 9 for blowing the air after the indoor heat exchange. 10 is a ceiling surface.

Next, the operation will be described. The air conditioner blows out the air blown from the suction port 8 by the blower 2 in the same direction as the rotation direction of the blower 2 and passes through the heat exchanger 5 to cool or heat the air according to each operating state of cooling or heating. , And blows out as cold air or warm air from the air outlet 9 into the room.

Further, a technique for reducing the noise by rectifying the flow of wind by providing a protruding portion in the air passage is disclosed in Japanese Utility Model Laid-Open No. 55-2.
It is disclosed in Japanese Patent Publication No. 2004.

[0005]

Since the conventional ceiling-embedded air conditioner is configured as described above, when the air blown from the blower 2 flows inside the heat exchanger 5, the heat exchanger 5 is used.
However, the wind speed does not weaken when there is no passing air volume when flowing inside the joint plate 11, and there is a problem that a wind noise is generated because it is blown to the heat exchanger 5 as it is. It was

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an air conditioner that reduces the wind noise of the air blown from a blower and does not give an uncomfortable feeling to human hearing. Has a purpose.

[0007]

A ceiling-embedded air conditioner according to the present invention has a straightening plate which has two plates protruding inside a heat exchanger and which also serves to hold the heat exchanger. Is integrally formed and is attached downstream of the joint plate and in the vicinity thereof.

[0008]

In the ceiling-embedded air conditioner according to the present invention, the wake of the wake of the joint plate is rectified by hitting the two plates protruding inside the heat exchanger.

[0009]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 12 denotes a support portion 15 of the heat exchanger 5 formed in a substantially U-shape, two cut-and-raised portions 13a protruding inside the heat exchanger 5 after attachment, and fixing to the housing 1. A straightening plate integrally formed of a steel plate or the like having the portion 16,
Reference numeral 14 is a screw for attaching the flow straightening plate 12 to the housing 1.

In the above structure, first, the rectifying plate 12 is inserted into the heat exchanger supporting portion 15 so as to cover the lower surface of the heat exchanger 5, and the mounting portion 16 is abutted against the lower surface of the housing 1 with the fixing screw 14. Stop it. As described above, the mounting of the current plate 12 is completed, and at the same time, the heat exchanger 5 is fixed to the housing 1.

Next, the operation during operation will be described. The air sucked from the suction port 8 by the blower 2 is blown out as it is in the same direction as the rotation direction of the blower 2, and the heat exchanger 5
Flowing inside. The wind blown on the heat exchanger 5 has a reduced wind speed corresponding to the amount of air passing through the heat exchanger 5. The wind velocity inside the joint plate 11 does not decrease because there is no passing air volume. After passing through the inside of the joint plate 11, the wind hits the cut-and-raised portion 13a of the straightening plate 12, where it is rectified and passes through the heat exchanger 5. The wind passing through the heat exchanger 5 is cooled or heated,
It blows out into the room from the outlet 9 as cold air or warm air.

Example 2. Although the cut-and-raised portion of the straightening vane 12 is cut and raised from the outside of the straightening vane 12 in the above embodiment, it may be cut and raised from the inside.

[0013]

As described above, according to the present invention, of the winds flowing inside the heat exchanger, the rectifying plate, which also functions as a heat exchanger support, is mounted in the wake of the joint plate and in the vicinity thereof, so that the wind is rectified, There is an effect that the wind noise is reduced and an air conditioner with low noise is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an air conditioner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an air conditioner according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a current plate of the air conditioner and its mounting structure according to an embodiment of the present invention.

FIG. 4 is a perspective view of a reduction plate of an air conditioner according to another embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view showing a conventional air conditioner.

FIG. 6 is a cross-sectional view of a conventional air conditioner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Blower 5 Heat exchanger 11 Joint plate 12 Straightening plate 13 Cut and raised part 15 Heat exchanger support part 16 Fixed part

Front Page Continuation (72) Inventor Itaro Akiyama 3-18-1, Oka, Shizuoka City Mitsubishi Electric Engineering Co., Ltd. Nagoya Office Shizuoka Branch Office (72) Inventor Masashi Yamada 3-181 Oga, Shizuoka City Mitsubishi Electric Engineering Co., Ltd.Nagoya Office Shizuoka Branch

Claims (1)

[Claims] 1. A ceiling-embedded type having a main body, a blower housed in the main body, and a heat exchanger that is annularly arranged around the blower and has a ring-shaped part formed of a joint plate. In the air conditioner, a ceiling-embedded air conditioner, which is provided inside the heat exchanger, downstream of and in the vicinity of the joint plate, and equipped with a rectifying plate that rectifies the flow of wind.