JPH0541301Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ceiling-embedded air conditioner.

BACKGROUND ART Conventionally, as this type of air conditioner (hereinafter referred to as an air conditioner), the one shown in FIG. 3 is common. That is, in FIG. 3, 1 is an air conditioner, which includes a blower 2 and an electric motor 3, which are installed downward in a box 1a installed on the ceiling, and a heat exchanger 4 and a dew pan 5 placed around them. and a box body 1
A panel 6 is provided on the lower surface of a. 6
a is a suction port provided in the center of the panel 6;
6b is a discharge port provided on the outer periphery of the panel 6. Further, 7 is an orifice ring of the blower 2. When the above configuration is operated, air in the air-conditioned room is sucked in through the suction port 6a of the panel 6, passes through the heat exchanger 4, and is discharged from the discharge port 6b.

Problems to be solved by the invention However, in such an air conditioner, the wind noise and inflow sound of the air passing through the blower 2 are
As shown in a of the figure, the noise is propagated through the suction port 6a, resulting in the problem of disrupting quiet and comfortable air conditioning.

The present invention solves these problems and provides a quiet air conditioner equipped with a muffler that reduces the noise from the blower as described above.

Means for Solving the Problems As mentioned above, the air conditioner of the present invention has a large number of cylindrical holes between the upper part of the air intake port of the panel and the lower part of the blower in order to reduce noise from the blower. A silencer is provided through which air from the air-conditioned room passes.

Effects With this invention, when the air in the air-conditioned room passes through the blower, the so-called noise from the blower, such as wind noise and inflow noise, is generated by the cylindrical hole when passing through the cylindrical hole of the silencer. Sound is absorbed and attenuated on the inner surface of the hole, and has the effect of reducing noise propagation to the air-conditioned room.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Components that are the same as those in the conventional example are designated by the same reference numerals and detailed explanations will be omitted.

FIG. 1 shows an air conditioner according to the present invention. FIG. 2 is a partial perspective view of a silencer in this air conditioner.

In FIG. 1, 8 is a silencer (see FIG. 2). This muffler 8 is provided with a large number of cylindrical holes 8a, through which air from the air-conditioned room can pass. A soft felt-like material is pasted on the inner surface of the aforementioned cylindrical hole 8a to provide a sound absorbing effect. Also, the effect is the same even if the entire silencer is made of soft felt-like material and a number of holes as described above are made in it.

The operation of the air conditioner having the above configuration will be explained below. By operating the air conditioner, air in the air-conditioned room is sucked in through the suction port 6a of the panel 6, passes through the muffler 8, passes through the blower 2, passes through the heat exchanger 4, and is discharged from the discharge port 6b. . In this state, wind noise and inflow noise when passing through the blower, so-called noise, propagate through the air and spread toward the suction port.
is transmitted to the entire air-conditioned room from the suction port 6a,
The noise is caused by the operation of the air conditioner.

However, in the air conditioner of the present invention, as described above, the sound is absorbed when it passes through the muffler 8, so the sound is reduced.

Effects of the invention As described above, the present invention installs a silencer with many cylindrical holes that have a sound-absorbing effect above the air intake port of the panel, so that the noise from the blower is propagated from the air intake port to the air-conditioned room. When this happens, the muffler absorbs sound, reduces noise, and provides quiet and comfortable air conditioning.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an air conditioner according to an embodiment of the present invention, FIG. 2 is a partial perspective view of a silencer provided in the air conditioner, and FIG. 3 is a sectional view of a conventional air conditioner. 1a... Box body, 2... Air blower, 4... Heat exchanger, 6... Panel, 6a... Suction port, 6b... Discharge port, 8... Silencer, 8a... Cylindrical hole.

Claims (1)

[Scope of utility model registration request] It consists of a box installed on the ceiling, a blower installed downwards together with a heat exchanger, etc. inside the box, and a panel having an air inlet and an air outlet installed on the lower surface of the box. An air conditioner equipped with a silencer that has many cylindrical holes between the top of the air intake port and the bottom of the blower, allowing air to pass through the holes.