JPH03170731A - Low noise type air-conditioner - Google Patents

Abstract

PURPOSE:To increase a sound-proof effect by sticking a silencer plate on the peripheral wall of a tubular body constituting an air-conditioner and by forming air passages in an outdoor air chamber and in an exhaust chamber in the shape of a crank. CONSTITUTION:When an air-conditioner is operated, air is taken into an outdoor-air chamber 8 from an outdoor-air intake port 6 by the operation of a fan 16 for blowoff of air, and the air passed through an air filter 11 and a mixing room 12 and subjected to a thermal control by a thermal control device is blown off into a room from an air blowoff port 7. Return air in the room returns to a fan chamber 22 for circulation of air and part of it is made to flow into the mixing room 12 through an air filter 23 and a damper 24, while the rest is discharged from an air discharge port through an exhaust chamber 25. On the occasion when the air is controlled by the air- conditioner along these routes, crank-shaped air passages are formed by buffle plates 9 and 26 in the outdoorair chamber 8 and the exhaust chamber 25 respectively and, in addition, silencer plates 3 to 5 are stuck on the peripheral walls of two tubular bodies 1 and 2 constituting the air control routes. According to the constitution described above, the space of installation is lessened and noise at the time of the operation can be reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a low-noise air conditioner that air-conditions a large space and reduces noise during operation, and the air conditioner can be installed in a small outdoor space. I made it possible.

[Prior Art] When air-conditioning a large space, large air conditioners of the so-called flat type or vertical type are used, and most of these devices are installed indoors. In this type of large air conditioner, large noise is generated due to air vibrations, air currents, etc. in the outside air chamber through which the inhaled outside air passes, and in the exhaust chamber through which the circulated and returned air is exhausted. For this reason, many chamber walls are lined with glass wool to reduce the noise generated.

[Problems to be Solved by the Invention] When a large air conditioner is installed indoors as in the past, the installation space for the air conditioner is large, making the layout difficult. In addition, when a large air conditioner installed indoors is operated, it is greatly affected by solid-borne sound and air-borne noise into the room, and as in the prior art, glass wool is used on the room walls of the outside air chamber and air exhaust chamber of the air conditioner. It was not possible to sufficiently reduce the influence of noise into the room by pasting it.

Therefore, in the present invention, the air control path of the large air conditioner is made into a two-stage type to reduce the installation space, the air conditioner is installed outdoors, and the air passage in the outside air chamber and the return air exhaust chamber is made into a crank shape. The purpose is to sufficiently reduce noise during operation.

[Means for Solving the Problems] The low-noise air conditioner of the present invention is provided with an outside air inlet and an air outlet at both ends of a first cylindrical body, and an outside air chamber, a mixing chamber, and a heat control device between the two. , an air blowing fan is provided, and a second
A return air inlet and an air outlet are provided at both ends of the cylindrical body, and between the two, a fan chamber and an exhaust chamber for air circulation, and a damper suitably communicated with the mixing chamber are provided. and a second cylindrical body are arranged adjacent to each other in two stages.

To reduce noise, sound deadening plates are attached to the walls of both cylinders, but noise can be further reduced by attaching multiple buttful plates to the outside air chamber and exhaust chamber to create a crank-shaped air passage. .

[Function] Since the above-described low-noise air conditioner has a two-stage air control path, it requires only a small space even when installed outdoors.

In addition, when the air conditioner is operating, the air blowing fan operates to draw air into the outside air chamber from the outside air intake port, and the air filter
Air that has been thermally controlled by a thermal control device is blown into the room from the air outlet through the mixing room. The return air in the room returns to the fan chamber for air circulation, a part of which flows into the mixing chamber through an air filter and a damper, and the remaining air is discharged from the air outlet through the exhaust chamber. When air is controlled by an air conditioner through such a route, a crank-shaped air passage is formed between the outside air chamber and the exhaust chamber by baffle plates, so that the noise energy is attenuated each time the air path turns. The sound is muted.

In addition, on the peripheral walls of the two cylinders that constitute the air control path,
Since a sound deadening plate is attached, noise caused by air flow and vibration inside the cylinder is difficult to leak to the outside.

[Example] Embodiments of the present invention will be described with reference to FIGS. 1 and 2.

A large air conditioner that can air condition large spaces, etc. has two long cylinders 1 and 2 equipped with various equipment placed vertically adjacent to each other in parallel, and is designed to be installed outdoors and to reduce the installation space. It is composed of In addition, each cylinder 1,
2 is approximately 0.6I to prevent internal noise from leaking to the outside.
An appropriate number of lead sheets 4 and glass wool (32K, 15IIIT+thickness) 5 are pasted on an iron plate 3 of III+ thickness. Further, in this embodiment, the two cylinders 1.2 are vertically adjacent to each other, but the devices to be provided inside the cylinders, which will be described later, may be installed on the opposite sides of the top and bottom, or the two cylinders can be placed horizontally adjacent to each other. You can.

An outside air inlet 6 is provided at one end of the upper cylindrical body 1, and an air outlet 7 is provided at the other end. An outside air chamber 8 is provided inside the outside air suction port 6, and within the outside air chamber 8, three baffle plates 9 are attached alternately, for example, vertically to form a crank-shaped air passage.

The baffle plate 9 is made by pasting a lead sheet and a molded glass wool plate onto an iron plate. Further from the outside air chamber 8 toward the air outlet 7, an outside air damper 10, an air filter 11, a mixing chamber 12, a humidifier 13, a cold water coil 14 and a hot water coil 15 as thermal control devices, and an air blowing fan 16 are provided. A fan chamber 17 is provided, and air-conditioned air is blown into the room from a duct 18 that communicates with the air outlet 7.

A return air inlet 19 is provided on the side of the outside air inlet 6 of the lower cylindrical body 2, and an outlet 20 is provided at the other end with an exhaust louver through which the return air is discharged. A fan chamber 22 equipped with a fan 2l for air circulation is provided inside the inlet 19 in the cylinder 2, and an outlet 2 is provided inside the cylinder 2.
toward 0, an air filter 23, an exhaust damper 24,
An exhaust chamber 25 is provided.

Inside the exhaust chamber 25, like the outside air chamber 8, three baffle plates 26 are vertically and alternately attached to form a crank-shaped air passage. Also, a damper 27 for return air is provided at an upstream position of the exhaust chamber 23 and communicates with the mixing chamber l2 as appropriate.
is provided so that a part of the return air from the room flows into the mixing chamber l2 and is circulated again. Note that the remaining return air that does not pass through the return air damper 27 is discharged from the exhaust port 20 via the exhaust damper 24.

The opening and closing states of the three dampers IO, 24, and 27 in the normal air conditioning state and in the all-outdoor air system are controlled as shown in the table below, and the air is controlled according to the opening state of each damper. It's flowing.

Table [Effects of the Invention] According to the low-noise air conditioner of the present invention, since it is designed for outdoor use, there is no need for installation space for the air conditioner inside the building, and the room can be used for other purposes. There is also little impact of noise into the room. Furthermore, since the air conditioner is a two-stage type, the equipment installation area is reduced.

Furthermore, a sound deadening plate is attached to the peripheral wall of the cylinder that makes up the air conditioner, and the air passages in the outside air chamber and the exhaust chamber are formed in the shape of a crank, so the soundproofing effect is sufficient and the noise regulation value is met on the boundary line of neighboring properties. can be adequately addressed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a low-noise air conditioner according to the present invention, and FIG. 2 is a partial sectional view of a peripheral wall of the air conditioner. l, 2; Cylindrical body 6; Outside air inlet 7; Air outlet 8; Outside air chamber

Claims (2)

[Claims] (1) An outside air inlet is provided at one end of the first cylindrical body, an air outlet is provided at the other end, and an outside air chamber, a mixing chamber, a thermal control device, and an air blowing fan are provided in the first cylindrical body,
A second cylindrical body is arranged parallel to the cylindrical body and adjacent to the second cylindrical body, a return air inlet is provided on the outside air inlet side of the second cylindrical body, and an air outlet is provided on the other side, and the second cylindrical body is provided with an air outlet on the other side. A fan chamber and an exhaust chamber for air circulation are provided in the body, and a damper is provided between these two chambers to appropriately communicate with the mixing chamber of the first cylindrical body. A low-noise air conditioner featuring a sound deadening board. (2) A plurality of baffles are attached to the outside air chamber of the first cylindrical body and the exhaust chamber of the second cylindrical body so that each air passage has a crank shape. The low-noise air conditioner listed.