JP2530292B2 - Ultra low noise 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 for installation in a hall having a vast area, and is particularly suitable for indoor use where noise is a concern, such as in exhibition halls and music halls. Type air conditioner.

[0002]

2. Description of the Related Art Recently, an air conditioner such as the above-mentioned music hall, which has various muffling mechanisms attached to the main body of the air conditioner, has been developed for the purpose of eliminating a noise generated during indoor air conditioning and seeking a quiet environment. Being developed. However, most of these air conditioners have several blowers arranged in series in a substantially straight air passage formed inside the air conditioner, so many silencers are installed in the air passage near the air outlet. Even if it does, the rotation speed of the blower is naturally driven at high speed due to the high static pressure air conditioning in the hall room, so the noise generation inside the machine is extremely great, and it is completely satisfactory even if a silencer with a considerably high rate is installed. It has a drawback that the silencing effect cannot be expected.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to fundamentally solve the above-mentioned problems by forming a ventilation passage in a substantially U-shaped ventilation passage and forming the ventilation passage in upper and lower blower chambers. The blower can be operated at a low speed regardless of the high static pressure by installing a pressure blower in each blower room, thus reducing the noise generated in the blower. Needless to say, the main purpose of the invention is to provide an ultra-low noise type air conditioner that can greatly reduce energy consumption with the least amount of electric power and is profitable.

[0004]

SUMMARY OF THE INVENTION The present invention was developed in view of the above-mentioned object, and a return air port and a blower port are provided in the upper portion of the machine body, and a blower chamber is provided above and below by a partition wall inside the machine body. A pressure blower is formed in the upper blower chamber with the discharge direction in the downward direction, and a discharge port of the blower is installed in the lower blower chamber in the forward blower direction to form a heat exchange coil in the chamber forming the blower chamber, An ultra-low noise type air conditioner characterized by arranging a filter and several muffling mechanisms, connecting the return air port and the air blowing port to each other, and connecting the entire shape by a substantially U-shaped air passage. Is.

Furthermore, a cushioning mechanism 10 having a constant weight is interposed between the lower blower 5 and the bottom plate of the machine body 1, and a muffling chamber 9 provided with an appropriate muffling mechanism in the upper part of the machine body 1 The feature is that they are integrally connected.

[0006]

Next, the operation will be described. As the upper and lower blowers 4 and 5 are operated, the air on the indoor side is returned to the inside of the machine through the return air port 2, and in the upper blower room A, the upper pressure blower 4 is supplied. And pressurizing the air, the air is sent to the lower blower chamber B. Further, during that time, the blown air is heat-exchanged to an appropriate temperature by the action of the heat-exchange coil 6, and thus the cold and warm air which has been heat-exchanged to an appropriate temperature passes through the lower blower passage by the blower operation of the lower blower 5. It is possible to make a detour to the upper part and to send cold or warm air of a predetermined temperature to the room from the air blowing port 3 through a duct (not shown). In addition, the air that can be introduced into the machine during the above operation is naturally returned to the room as fresh air by removing fine dust in the air by the filter 7, but depending on the case, the outside air introduction duct may be used. Has a function of introducing fresh outside air from the return air port 2 into the air passage of the cabin to supply cold and warm air together with the indoor return air. Moreover, in the present invention, by using the pressure fan 5 for the upper blower 4, the blown air into the lower blower chamber B becomes forced blown air, and such blown air is applied to the cushion mechanism 10 according to claim 2,
By virtue of the action of the cushion mechanism 10, the vibration force due to the strong blowout pressure is converted into a low frequency and absorbed, so that it is possible to immediately and surely eliminate any strong noisy vibration. Further, in the case of the present invention, since the entire air passage is formed in a substantially U-shaped air passage, naturally the air distance is longer than that of a normal straight air passage, and accordingly, the air is blown between them. Naturally, the noise of noise flowing through the passage along with the air is naturally reduced, and the noise is reduced by the noise reduction mechanisms 8, 8, 8 provided in the air passage, and the noise is added to the upper part of the machine body 1. By connecting the silencing chamber 9, a more complete and reliable silencing effect can be expected.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Explaining the drawings exemplifying the constitution of an ultra-low noise type air conditioner according to the present invention, reference numeral 1 is an airframe in which a return air port 2 and a blower port 3 on the indoor side are provided on the upper one Ducts (not shown) are connected to each to return the indoor air, cool air, and warm air. Further, the inside of the machine is divided into upper and lower parts by a partition wall a, an upper blower room A is formed in the upper blower passage, and a lower blower room B is formed in the lower part, and the return air port 2 and the blower port 3 are formed in the upper and lower blower chambers. A substantially U-shaped air passage is connected and communicated through A and B, and further, a heat exchange coil 6 for cold and hot water, an appropriate filter 7 for main, pre, and medium performance, and an air blower 4 are installed in the upper air blower chamber A. The blower 4 uses a pressure fan, and the discharge port 4a is installed in the downward direction, and the blower 5 is opened in the lower blower chamber B and the discharge port 5a is opened in the forward blowing direction. And install. Further, according to the present invention, a muffler air blowing passage is formed by arranging several muffling mechanisms 8, 8, 8 in the air blowing passage near the air intake / exhaust port.

Further, a weight cushion mechanism 10 which can be framed in a fixed shape by a material of weight such as concrete is interposed between the lower side blower 5 and the bottom plate of the body 1 to reduce the load noise of the blower 5 and the upper blower 4 described above. It has the function of absorbing the powerful blown air.

Furthermore, a return air port 2 and a blower port 3 are provided in the upper part of the machine casing, and a muffling chamber 9 in which a muffling mechanism of an appropriate shape is arranged is integrally connected to the upper part of the machine body 1. With such a configuration, it is possible to more reliably and reliably eliminate the noise in the circulating air together with the muffling mechanism 8, 8, 8 installed in the air passage. It should be noted that it is also a consideration to form the silencing chamber 9 in advance so that it can be assembled on site without being integrally formed, depending on the installation location and the like.

[0010]

As described above, the air conditioner according to the present invention is provided with a blower passage having a substantially U-shape as a whole in the inside thereof, and the blowers 4 and 5 and the heat exchange coil 6 are provided above and below the blower passage. Since each of the mechanisms of the filter 7 is installed, naturally the circulation distance of the air flowing through the inside of the machine is extremely long as compared with the conventional straight air passage, and thus the return air port 2
The noise in the air can be naturally silenced during the circulation of the air reaching the blower port 3, and the noise is removed through the blower passage by the action of the muffling mechanism 8, 8, 8 provided in the blower passage. It has a great effect in that it can completely suppress the noise in the air that is generated and extremely low noise air conditioning, and that it can be compactly formed so that the overall shape of the aircraft is sober. Further, in the present invention, by using a pressure fan for the blower 4, it is possible to completely solve the imbalance of the air conditioning in the room, and of course, the blower 4 can be operated at a low speed regardless of the high static pressure air expansion. Since it can be obtained, it also has an economic effect that the power consumption can be greatly reduced.

In the present invention, the discharge direction of the upper blower 4 is set downward and the discharge direction of the blower 5 in the lower blower chamber B is set to open in the forward blow direction. By interposing the cushion mechanism 10 having a constant weight between the lower blower 5 and the bottom plate of the machine body 1, the powerful blown air discharged from the upper blower 4 is directly received by the cushion mechanism 10 and It also has the effect of completely and reliably absorbing the noise of noise and suppressing the noise of noise caused by the blower 5.

Further, as described in claim 3, by further connecting the silencing chamber 9 to the upper part of the machine body 1, a better and more reliable silencing effect can be obtained together with the silencing mechanism 8, 8, 8 in the machine. Therefore, it can be said that the invention is optimal as an ultra-low noise type air conditioner.

[Brief description of drawings]

FIG. 1 is a plan view showing an internal mechanism of an ultra-low noise type air conditioner according to the present invention,

FIG. 2 is a front view of the same.

[Explanation of symbols]

 1 Aircraft 2 Return Air Vent 3 Air Vent 4 Upper Blower 5 Lower Blower 6 Heat Exchange Coil 7 Filter 8 Muffling Mechanism 9 Muffling Chamber 10 Cushion Mechanism A Upper Blower Room B Lower Blower Room

Claims (3)

(57) [Claims] 1. A blower passage including an upper blower chamber A and a lower blower chamber B is formed by providing a return air port 2 and a blower port 3 in the upper part of a machine body 1 and dividing the center of the machine up and down by a partition wall a. Then, the discharge direction of the blower 4 is set to be downward in the upper blower chamber A, and the discharge direction of the blower 5 is set to be opened in the lower blower chamber B so as to open in the forward blower direction, and heat is exchanged in the blower passage. A coil 6, a filter 7 and several muffling mechanisms 8, 8 and 8 are arranged, and the return air port 2 and the blower port 3 are passed through the upper and lower blower chambers A and B in a generally U-shaped blower passage. An ultra-low noise air conditioner characterized by connecting and communicating. 2. The above-mentioned substantially U-shaped blower passage is formed in the machine, the pressurized blower 4 is provided in the upper blower room A, and the discharge direction of the pressurized blower 4 is downward, and the discharge of the pressurized blower 5 is provided in the lower blower room B. 2. The ultra-low noise according to claim 1, characterized in that the cushioning mechanism 10 is installed between the lower blower 5 and the bottom plate of the machine body 1 so as to open each of them in the forward blowing direction. Shape air conditioner. 3. A substantially U-shaped blower passage is formed in the air blower, the blowers 4 and 5 are respectively installed vertically in the upper and lower blower chambers A and BA, and several mufflers are provided in the blower passage near the intake and exhaust ports. In an air conditioner having the mechanisms 8, 8, 8 attached thereto, the muffler chamber 9 is provided with the return air port 2 and the blower port 3 at the upper part and an appropriate muffling mechanism arranged in the device. No. 1 is integrally connected to the upper part of the air blower 1, and the noise canceling mechanism 8, 8, 8 installed in the air blow passage is used to actively eliminate noise in the air flowing in the air blow passage. The ultra-low noise type air conditioner according to claim 1.