JPH0711347B2 - Low noise type air conditioner - Google Patents

Description

TECHNICAL FIELD 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 is installed in a small outdoor space. I made it possible.

[Prior Art] When air-conditioning a large space, a large air conditioner of a so-called flat type or a vertical type is used, and most of these devices are installed indoors. In such a large-sized air conditioner, a large noise is generated due to air vibration or air flow in the outside air chamber through which the sucked outside air passes or in the exhaust chamber through which the air to be discharged out of the circulating and returning air passes. Therefore, in order to reduce the generated sound, glass wool is often attached to the inner walls of the chambers.

[Problems to be Solved by the Invention] When a large air conditioner is installed indoors as in the prior art, the installation space of the air conditioner is large, so the layout is difficult. In addition, a large air conditioner installed indoors is greatly affected by solid-borne sound and air-borne sound inside the room during its operation, and glass wool is attached to the outside air chamber of the air conditioner and the air exhaust chamber wall as in the prior art. The effect of noise on the room could not be sufficiently reduced by applying the mark.

Therefore, in the present invention, the air control path of the large air conditioner is of a two-stage type to reduce the installation space, and the air conditioner is of the outdoor installation type, and the air passages in the outside air chamber and the return air exhaust chamber are crank-shaped. The purpose is to sufficiently reduce the noise during operation.

[Means for Solving the Problem] A low noise type air conditioner according to the present invention is provided with an outside air inlet and an air outlet at both ends of a first tubular body, and an outside air chamber, a mixing chamber, and a heat control device between the two. , Equipped with a fan for blowing air, second
A return air suction port and an air discharge port are provided at both ends of the cylindrical body, and a fan chamber and an exhaust chamber for air circulation and a damper appropriately connected to the mixing chamber are provided between them. And the second cylindrical body are adjacent to each other in a two-stage manner.

Noise reduction plates are attached to the walls of both cylinders to reduce noise, but noise can be further reduced by attaching multiple buckle plates to the outside air chamber and exhaust chamber to make the air passage crank-shaped. .

[Operation] Since the low noise type air conditioner has a two-stage air control path, it may be installed outdoors or in a small space.

When the air conditioner is operating, the air blower fan operates to draw air from the outside air inlet into the outside air chamber,
Air whose heat is controlled by the heat control device is blown into the room from the air outlet through the mixing room. Return air in the room returns to the fan chamber for air circulation, part of which flows into the mixing chamber through the air filter and damper, and the remaining air is discharged from the air exhaust port through the exhaust chamber. When the air is controlled by the air conditioner in such a route, the outside air chamber and the exhaust chamber form a crank-shaped air passage with a baffle plate, so that the noise energy of the air is attenuated every time the course bends, It is muted.

In addition, on the peripheral walls of the two cylinders that form the air control path,
Since a sound deadening plate is attached, noise due to airflow and vibration inside the cylinder is unlikely to leak outside.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS.

A large-scale air conditioner capable of air conditioning a large space, etc., has two long cylinders 1 and 2 equipped with various devices that are vertically adjacent to each other to allow outdoor installation specifications and reduce the installation space. Is configured. In addition, each cylinder 1,
2 is an iron plate 3 with a thickness of about 0.6 mm, a lead sheet 4 and glass wool (32k, 15mm) so that internal noise does not leak outside.
(Thickness) 5 and a suitable number of sheets are attached. Further, in this embodiment, the two cylinders 1 and 2 are vertically adjacent to each other. However, a device to be described later may be provided on the upper and lower reverse sides, or the two cylinders may be laterally adjacent to each other. May be.

An outside air suction port 6 is provided at one end of the upper tubular 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 three baffle plates 9 are alternately mounted inside the outside air chamber 8 to form a crank-shaped air passage. The baffle plate 9 is an iron plate to which a lead sheet and a glass wool molding plate are attached. From the outside air chamber 8 toward the air outlet 7, the outside air damper 10, the air filter 11, the mixing chamber 12, the humidifier.
13, cold water coil 14 and hot water coil 15 as a heat control device,
A fan chamber 17 having an air blowing fan 16 is provided so that air-conditioning-controlled air is blown into the room from a duct 18 communicating with the air outlet 7.

A return air suction port 19 is provided on the side of the outside air suction port 6 of the lower cylindrical body 2, and a discharge port 20 having an exhaust gallery for letting out what is discharged by the return air is provided at the other end. A fan chamber 22 provided with a fan 21 for air circulation is provided inside the suction port 19 in the tubular body 2, and an air filter 23, an exhaust damper 24, and an exhaust chamber 25 are provided toward the exhaust port 20. . In the exhaust chamber 25, three baffle plates 26 are vertically attached alternately in the same manner as the outside air chamber 8 to form a crank-shaped air passage. A return air damper 27 is provided at an upstream position of the exhaust chamber 25 so as to communicate with the mixing chamber 12 as appropriate, and a part of return air from the chamber is introduced into the mixing chamber 12 and circulated again. . The remaining return air that does not pass through the return air damper 27 is exhausted from the exhaust port 20 via the exhaust damper 24.

The open / close state of each of the three dampers 10, 24, 27 in the normal state and the total outside air system is controlled as follows, and air flows according to the opening degree state of each damper. It is like this.

[Effect of the Invention] According to the low noise type air conditioner of the present invention, since it is an outdoor specification, a device installation space for the air conditioner is not required in the building,
The room can be used for other purposes correspondingly, and the effect of noise on the room is small. Moreover, 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 constitutes the air conditioner, and the air passages in the outside air chamber and the exhaust chamber are formed in a crank shape, so the sound insulation effect is sufficient and the noise regulation value on the border line of the adjacent land etc. Can be fully dealt with.

[Brief description of drawings]

FIG. 1 is a sectional view of a low noise type air conditioner of the present invention, and FIG. 2 is a partial sectional view of a peripheral wall of the air conditioner. 1, 2; Cylindrical body, 6; Outside air suction port 7; Air outlet, 8; Outside air chamber 9; Baffle plate, 10; Outside air damper 16; Air blowing fan, 17; Fan chamber 19; Suction port, 20; Exhaust air Mouth 21; Fan, 22; Fan chamber 24; Exhaust damper, 25; Exhaust chamber 26; Baffle plate, 27; Return air damper

Claims (2)

[Claims] 1. An outside air suction port is provided at one end of a first cylinder, and an air outlet is provided at the other end, and an outside air chamber, a mixing chamber, a heat control device, and an air blowing fan are provided in the first cylinder. A second cylinder adjacent to the cylinder parallel to the cylinder, a return air suction port is provided on the outside air suction port side of the second cylinder, and an air discharge port is provided on the other side of the second cylinder; A fan chamber for air circulation and an exhaust chamber are provided in the cylindrical body of, and a damper for appropriately communicating with the mixing chamber of the first cylindrical body is provided between the both chambers, and the damper chamber of the first and second cylindrical bodies is provided. A low-noise air conditioner characterized by a sound deadening plate attached to the surrounding wall. 2. A plurality of baffles are attached to the outside air chamber of the first tubular body and the exhaust chamber of the second tubular body so that each air passage has a crank shape. The low noise type air conditioner described in 1.