JPS6015992Y2 - air compressor - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air compressor, and is configured to provide soundproofing and to effectively prevent temperature rise due to heat radiation from the compressor body.

In an air compressor in which the compressor body and motor are housed in a soundproof box, a pressurized ventilation fan is separately installed to prevent temperature rise due to heat radiation from the compressor body.

However, in such a pressurized ventilation system, since an independent ventilation fan is provided, it is undeniable that air compression 'i:'X: becomes expensive.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air compressor that can be manufactured at low cost and that is configured to prevent temperature rise due to heat radiation from the compressor body as much as possible.

This will be explained below based on a specific example.

The compressor main body 1 and the motor 2 have pulleys 5 and 6 fixed to a rotating shaft 3 and a drive shaft 4, respectively, and a belt 7 is stretched between both pulleys 5 and 6, and the whole is connected to a soundproof box 8. The air compressor is housed within the air compressor.

That is, the compressor body 1 and the motor 2 are fixed to a frame 9, and this frame 9 is mounted on a base frame 11 via anti-vibration rubbers 10, 10, . . . Attach the soundproof box 8 and install the compressor body 1
This configuration surrounds the motor 2 and the motor 2.

If the soundproof box is surrounded by such a structure, the temperature inside the soundproof box 8 will rise due to heat radiation from the compressor main body 1, especially the cylinder portion 12.

Therefore, in the present invention, among the side walls of the soundproof box 8, the side wall 8a facing the pulley 5 attached to the rotating shaft 3 of the compressor main body 1
In addition, a duct 14 extends from the side wall 8a toward the compressor main body 1, and a blade portion 15 for blowing air is formed on the pulley 5.

The duct 14 has a shape that substantially follows the outer shape of the compressor main body 1 and surrounds it.

That is, as shown in FIG. 1, the front shape is trapezoidal from the ceiling wall 8b as a clay wall on the ceiling of the soundproof box 8, and the side walls 8C, 8C located on both sides of the rotating shaft 3 of the compressor body 1. The auxiliary walls 16 and 17 exhibiting
The space surrounded by these auxiliary walls 16 and 17 extends along the compressor body 1 toward the duct 14.
It's Toshide.

That is, the auxiliary walls 16.17 extend from the side wall 8a to the side wall 8a.
It extends perpendicularly to the side wall 8a toward the side wall 20 of the soundproof box 8 facing the side wall 8a, and extends between the ceiling wall 8b and the compressor main body 1, and between each of the side walls 8c, 8c and the compressor main body 1. Therefore, a duct 14 communicating with the intake port 13 and surrounding the compressor body 1 is formed between the auxiliary walls 16 and 17 and the compressor body 1.
, a space 21.21.21 separated from the duct 14 is formed between each of the side walls 8c and 8c.

In order to blow air toward this duct 14, a blade part 15 is provided on the pulley 5, and on the other hand, in order to release the cooling air that has entered the soundproof box 8 to the outside, an outlet 18 is provided in the side wall 8C98C. It is perforated.

It is preferable that a sound absorbing material is attached to the auxiliary walls 16 and 17 as well as the side walls and ceiling wall of the soundproof box 8, and the exhaust port 18 is arranged so as not to be in a straight line with the intake port 13,
It is preferable to configure the structure to efficiently absorb sound.

In other words, the discharge port 18 may be provided at any location on the side wall or ceiling wall as long as it is not in a straight line with the intake port 13.

However, if the exhaust port 18 is formed in the side wall 8a where the intake port 13 is provided, the airflow that has passed through the duct 14 will flow in the reverse direction, increasing ventilation resistance and increasing the load on the blade portion 15, so avoid this. is preferable.

The blade portion 15 of the pulley 5 has the shape of an axial flow type blade used in ventilation fans, etc., and the pulley generally has only a plurality of supports between a boss that is fitted into the shaft and a rim on the periphery. Therefore, the blade portion 15 may be disposed between the supports.

However, in order to create a new pulley having the blade portion 15, the boss and the rim may be connected by the blade portion itself, thereby omitting the support.

According to the present invention configured as above, when the compressor main body 1 is operated by the motor 2 via the pulley 6, belt 7, and pulley 5, the compressor main body 1 obtains compressed air.

At this time, the heat dissipated from the compressor body is taken away by the cooling air sent from the rotating twisted blades 15 of the pulley 5, so there is no heat buildup around the compressor body 1, and the heat buildup prevents the equipment As a result, it is possible to maintain good operation at all times as a result of preventing situations such as burn-in.

Furthermore, since the cooling air is sent through a duct surrounding the compressor main body, the cooling efficiency is good, and the blades provided on the pulley can also provide a sufficient cooling effect.

Furthermore, since a pressure ventilation fan is not provided separately and only a slight change in design of the pulley is required, it can be manufactured at a lower cost than the pressure ventilation fan system.

In the air compressor of the present invention, the compressor body is housed in the upper part of the soundproof box, and the motor is housed in the lower part of the soundproof box. The floor area can be made extremely small, and the air intake port is formed in the part facing the pulley of the rotating shaft of the compressor main body housed in the upper part of the soundproof box, and from this air intake port, the blades formed on the pulley are connected. Since the air is forcibly sucked into the soundproof box by the section, it is possible to avoid sucking relatively dusty air near the floor, and it is possible to always suck clean air above the floor where it is installed.

In addition, in the air compressor of the present invention, an auxiliary wall that extends perpendicularly to the first side wall provided with the intake port and surrounds the compressor main body is provided between the soil wall and the compressor main body and the third side wall. A duct is provided between each of the fourth side walls and the compressor main body, and around the compressor main body, a duct that communicates with the intake port is formed almost straight. Because the space is separated by walls,
The compressor body can be efficiently cooled because the inhaled air can be brought into contact with the compressor body without waste, while the area around the compressor body can be substantially double soundproofed to reduce the sound emitted from the compressor body. Furthermore, sound insulation can be achieved reliably, and cooling and soundproofing can be efficiently achieved all at once.

At the same time, in this invention, since the exhaust port is provided in the lower part of the soundproof box facing the motor, the motor can also be cooled by the air passing through the duct, and the air emitted from the compressor body can also be cooled. Direct leakage of sound from the exhaust port can be prevented.

[Brief explanation of the drawing]

1 is a sectional view of the air compressor of the present invention taken along the line II in FIG. 2, and FIG. 2 is a sectional view taken along the line tt-n in FIG. 1...Compressor body, 2...Motor, 3
...Curved rotating shaft, 4...Drive shaft, 5, 6...Curved pulley, 7...Curved belt, End...Soundproof box, 13...
Curved intake port, 14... Curved duct.

Claims (1)

[Scope of utility model registration request] A compressor main body is housed in the upper part of the soundproof box, and a motor is housed in the lower part of the soundproof box, and a rotating shaft 3 of the compressor main body and a drive of the motor respectively protrude toward the first side wall of the soundproof box. A boob is attached to each of the shafts, a belt is stretched between both boos, and an intake port is formed in the first side wall at a portion facing the boob attached to the rotating shaft of the compressor main body. The compressor main body extends perpendicularly to the first side wall from the first side wall of the soundproof box provided with the air intake port to the second side wall of the soundproof box opposite to the first side wall. An auxiliary wall that surrounds the compressor main body almost along the outer shape is provided between the earthen wall of the soundproof box and the compressor main body, and between each of the third and fourth side walls connecting the both side walls and the compressor main body. A duct is provided between the auxiliary wall and the compressor body, communicating with the intake port and surrounding the compressor body, while a space separated from the tact is formed between the auxiliary wall and the earthen wall. An exhaust port that communicates with the duct is provided in one of the second, third, and fourth side walls at a portion facing the motor, and an exhaust port that communicates with the duct is provided between each of the third and fourth side walls. An air compressor with blades formed on a pulley attached to the rotating shaft.