JP3109982B2 - Low noise ceiling air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION It is an object of the present invention to provide an ultra-low noise ceiling-mounted air conditioner which is most suitable for music halls, exhibition halls, hospitals, etc. where a quiet environment is particularly required. The present invention relates to an intended low-noise ceiling-mounted air conditioner.

[0002]

2. Description of the Related Art Normally, there is a concern that noise generated in a cabin during indoor air-conditioning may flow out of the air outlet as well as the return air outlet into the room as noise. Therefore, in the case of music halls, exhibition halls, hospitals, and the like, where a quiet environment is particularly required, it is an issue to prevent the above noise from leaking out. In general, a method of incorporating an appropriate silencing mechanism in a ventilation duct, or incorporating various silencing mechanisms in an air passage in an air conditioner, and further connecting a silencing box to a return / outlet portion has been widely adopted. It is.

[0003]

However, since most of these conventional structures are based on the above-mentioned means, for example, by incorporating a muffling mechanism integrally in a ventilation passage of an air conditioner, the air flow and the wind speed can be reduced. In addition to this, the overall structure is complicated and heavy, and of course, connecting a muffler box etc. to the upper part of the fuselage naturally results in a bulky overall shape, restricting the installation location, and making the duct connection work difficult In addition, there are various disadvantages that hinder transportation and the like.

[0004]

SUMMARY OF THE INVENTION The present invention completely reverses the above-mentioned idea of eliminating noises in the air by using a conventional silencing mechanism having a complicated structure, and returns the return air and the outflow from the outlet. This is an epoch-making invention that actively twists the air while the air is flowing through the machine and makes it possible to fundamentally suppress the noise noise flowing out of the room using the twisted air. Like.

That is, according to the present invention, an air intake port 2 and an air supply port 3 are provided in a row in a row on one left side of an airframe 1, and a return air blower 4 is installed in the other side of the airframe. The return / air blower 4 is bent at the upper and lower sides of the inside of the machine so as to communicate with the intake port 2 and the air blow port 3 with the return / air blower 4 as a bending point.
The suction-side silencing chamber 6 is formed into a shape, communicates with the intake port 2, has a general area larger than the diameter of the intake port 2, and forms the silencing / guide plate 5 and the inclined ventilation path A. The suction-side silencing chamber 6 is provided with a filter chamber 7.
And the air blower 4 through the respective chambers of the heat exchanger room 12.
Forming a return air blowing passage a communicating with the heat exchanger chamber 12, and the air blowing air passage b communicates with a general-area blowing-side silencing chamber 13 through a narrow air blowing passage c formed below the heat exchanger chamber 12;
Further, the air supply / air supply path b is connected to the suction-side silencing chamber 6.
The air outlet 3 communicates with the air outlet 3 from the blow-out side silencing chamber 13 having the inclined air passage B formed adjacent to the air outlet 3.

[0006]

The present invention has the above-mentioned structure,
Instead, tilting the driving operation of the air blower 4, the indoor air is flowing into the suction side silencer chamber 6 from the intake air port 2 with chamber bustle sound from air intake port 2 of diameter small indoor inflow pan area Due to the flow action with the air passage A, an action to actively twist the flowing air flow is generated. Due to the twisting action of the air, the sound flow in the air absorbs the high-pitched noise, and at the same time, the noise-reducing air is naturally reduced to a level lower than the average value. 7. Cold and hot water coil 10 by spreading into heat exchanger room 12
Substantially uniform heat exchange is performed on the entire effective surface.
In this way, the cool and warm air sucked and returned by the air blower 4 to be U-turned through the air blower 4 passes through the narrow air flow path c formed below the air blow air path b in the coil, and in the blow-out noise reduction chamber 13 having the general area as described above. The inclining airflow path B again causes the inflowing air to positively twist the inflow air, and cool and warm air with almost no sound is supplied into the room through the air supply port 3. As described above, the present invention makes it possible to return the air using the twisted circulation of air, to primarily muffle the noise in the air supply, and to easily obtain a completely noise-free air supply by the secondary noise reduction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A ceiling-suspended air conditioner shown in the drawings as an embodiment of the present invention will be described below. Reference numeral 1 denotes a horizontally long box-shaped airframe, and an intake port 2 and an air supply port 3 are arranged in a row on the left side. And an air blower 4 is installed in the other side of the machine, and the air blower 4 is installed at the other end of the machine so that the air blower 4 is bent at the bending point so as to communicate with the air inlet 2 and the air blower 3. Return air duct a
And the air supply / air supply path b is formed in a U shape.

[0008] The intake port 2 communicates with the intake port 2
Silencing and guide plate 5 having an enlarged general area and inclined air passage
A is formed and provided on the suction-side silencing chamber 6 formed by A.
The suction side silencing chamber 6 is connected to the filter chamber 7 and heat exchange.
Communicate with the return and air blower 4 through each chamber of the instrument room 12
The return air blowing passage a is formed. The suction side silencer
The muffler / guide plate 5 is protruded into the inside
I do.

In the above-mentioned filter chamber 7, main and pre
Filters 8 and 9 are installed in the heat exchanger room 12
Machines that require cold / hot water coil 10, drain pan 11, etc.
Each of the structural devices is arranged.

The air supply and air passage b is formed below the heat exchanger room 12.
A wide-area blowout-side silencer through a narrow air passage c
It communicates with the bar 13, and furthermore, the air supply / air supply path b
A blow-off side exhaust having an inclined air passage B formed adjacent to the chamber 6
The sound chamber 13 communicates with the air supply port 3.

In the present invention, one of the above components
Without installing a single return, air blower 4
The air blowers 4 and 4 for upper and lower or left and right
Install and return the air blowers 4 and 4 on both sides of the fuselage 1
By making it slide-in and out,
Various tasks such as maintenance can be performed very easily and reliably
It can also be done.

[0012]

【The invention's effect】 As described above, the low noise type ceiling according to the present invention
Suspended air conditioner starts from suction side silencing chamber 6 formed inside the machine.
In the middle of the filter chamber 7, the diameter of the chamber is
Chamber by the inflow into the chamber
Actively twisting the return air from inside to reduce the noise in the air
The primary silencing in the return air passage a to be silenced and the return air
Air-supplying air passage b formed on the side of the air passage a and silenced on the outlet side
Secondary to twist and muffle in chamber 13
The noise generated inside the aircraft is eliminated by the silencing effect.

[0013] Further, the return air blowing passages a and
In addition to the silencing function of the entire U-shaped air passage of the air supply air passage b , it prevents the noise inside the machine leaking from the air inlet 2 from flowing out, and simultaneously suppresses the noise noise flowing out of the air inlet 3 into the room. The room that you are trying to erase is always completely quiet,
It has a great effect, such as being able to supply warm air.

[Brief description of the drawings]

FIG. 1 is a plan view showing the internal structure of a low-noise ceiling-mounted air conditioner according to the present invention,

FIG. 2 is a front view showing the internal structure,

FIG. 3 is a side view of one of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 2 Inlet 3 Inlet 4 Air blower for return air 5 Silencer and guide plate 6 Suction side silencer chamber 7 Filter room 8 Filter 9 Same as above 10 Cold and hot water coil 11 Drain pan 12 Heat exchanger room 13 Blow-out silencer chamber a ~ b Return air supply and air supply path (U-shaped air supply path) c Narrow air supply path (air supply and air supply path) A Inclined air supply path (suction side silencer chamber) B Inclined air supply path (outlet side silencer chamber)

Claims (1)

(57) [Claims] 1. An air inlet 2 and an air inlet 3 are provided in a row in a row on one left side of an airframe 1, and a return air blower 4 is installed in the other side of the airframe. A return air blow path a and a blow air blow path b are formed above and below the inside of the machine so as to communicate with the air inlet 2 and the air blow port 3 with the air blower 4 as a bending point, and the air blower 4 communicates with the air inlet 2. A suction-side muffling chamber 6 having a general area larger than the diameter of the intake port 2 and having a muffling / guide plate 5 and an inclined air passage A is formed and provided. Heat exchanger room 1
The return air blow path a communicating with the return air blower 4 through each chamber 2 is formed, and the air blow path b is a narrow blow path c formed below the heat exchanger chamber 12. , And communicates with the general-purpose outlet-side silencing chamber 13, and the air-supplying air-supply path b is further supplied from the outlet-side silencing chamber 13 having the inclined-side air-supplying path B formed adjacent to the suction-side silencing chamber 6. A low-noise ceiling-mounted air conditioner characterized by being connected to the mouth 3.