JPS647252Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a package type compressor in which a compressor main body, a motor, an air tank, etc. are housed in a soundproof box in order to reduce noise generated from the compressor main body. Conventionally, it was the first package type compressor of this type.
The one shown in the figure is known. In the figure, 1 is a soundproof box with a sealed structure, and the soundproof box 1 consists of a bottom plate 1A, a ceiling plate 1B, a left side plate 1C, a right side plate 1D, and front and rear plates. It is divided into two chambers 3 and 4. Among the chambers 3 and 4, one chamber 3 has an air tank 5.
is accommodated. The soundproof box 1 has an intake port 6 located at the left side panel 1C that defines one chamber 3 and located below.
Exhaust ports 7 are formed above, and one chamber 3
Inside, a lower chamber 3A surrounds the air tank 4 and communicates with the intake port 6 through another partition wall 8;
It is partitioned into an upper chamber 3B that communicates with the exhaust port 7. Further, a pedestal 9 which also serves as a partition plate is provided approximately at the center of the other chamber 4 among the chambers 3 and 4, a motor 10 is suspended from the lower surface of the pedestal 9, and a compressor 10 is suspended from the upper surface of the pedestal 9. The machine body 11 is placed. Here, the compressor main body 11 is a crank case 11.
A, a cylinder 11B in which a piston is slidably disposed, and a cylinder head 1 provided at the top of the cylinder 11B and having an intake valve and a discharge valve therein;
The compressor main body 11 is connected to a motor 11 via a belt 12, and is also connected to an air tank 4 via a discharge pipe (not shown). In this way, the intake port 6 and the exhaust port 7 are opened to one chamber 3 that houses the air tank 5, and the other chamber 4, which is located deep from the intake port 6 and the exhaust port 7, is connected to the compressor main body, which is a noise source. 11 prevents noise from directly leaking to the outside. On the other hand, the aforementioned mount 9 has its left end supported by the partition wall 2, and its right end supported by the cold air guiding duct plate 13. Here, the duct plate 1
3 is disposed close to and parallel to the right side plate 1D, its lower end is attached to the bottom plate 1A, and its upper end protrudes above the mount 9. In the other chamber 4, the lower surface side of the frame 9 becomes a motor chamber 4A that accommodates the motor 10, and the upper surface side becomes a motor chamber 4A that accommodates the compressor body 11.
The compressor body chamber 4B houses the duct plate 1.
3 and the right side plate 1D is a ventilation duct 4C. The ventilation duct 4C communicates with the motor chamber 4A through a vent hole 14 formed in the duct plate 13, and the upper part of the duct 4C is an opening that communicates with the compressor main body chamber 4B. A guide plate 15 is provided above to guide cooling air to the cylinder 11B and cylinder head 11C of the compressor main body 11. A cooling fan 16 such as a multi-blade fan is provided in the ventilation duct 4C, and the fan 16 is connected to the motor 10. Further, reference numeral 17 denotes a cold air introduction port formed in the partition wall 2 to communicate with the lower chamber 3A of one of the chambers 3 and the motor chamber 4A. Motor chamber 4 via 3A
Introduce it to A. 18 is a partition wall 2 for discharging warm air in the compressor main chamber 4B toward the upper chamber 3B.
The warm air discharge port 18 is provided with a warm air guiding duct plate 19. The duct plate 19 is formed substantially parallel to the partition wall 2 at a predetermined distance, and has a closed cross section L on its lower surface.
The duct passage 20 is formed in the shape of a letter, with an opening at the upper side thereof and the partition plate 2 . Here, if the opening height of the warm air discharge port 18 is l ₁ and the height of the duct plate 19 is l ₂ , then l ₂ is configured to be twice the height of l ₁ . The package type compressor according to the prior art is constructed as described above, but by rotating the motor 10, the compressor main body 11 is operated via the belt 12, and the piston in the cylinder 11B reciprocates to move the cylinder head 11C. The air sucked in through the intake valve is discharged from the discharge valve, and this compressed air is stored in the air tank 4 via the discharge piping. On the other hand, the rotation of the motor 10 causes the cooling fan 1 to
6 rotates, and the cold air sucked in from the intake port 6 is sent to the lower chamber 3.
A, cold air inlet 17, motor room 4A, vent 14
The cooling air is introduced into the ventilation duct 4C through the guide plate 15, and is discharged in the compressor main body chamber 4B toward the cylinder 11B and the cylinder head 11C. 11B, the cylinder head 11C, etc., and remove the compression heat generated during compression operation. At the same time, the motor 10 in the motor chamber 4A is cooled. The cooling air that has become warm air due to the heat of compression in the compressor main body chamber 4B is discharged from the upper opening of the warm air guide duct plate 19 to the upper chamber 3B via the duct passage 20 and the warm air discharge port 18, and further The air is exhausted from the exhaust port 7 to the atmosphere. At this time, the airflow heading toward the partition wall 2 is bent downward at 90 degrees at the upper opening of the duct plate 19, passes through the duct passage 20, and then collides with the lower surface of the duct plate 19, forming an angle of 90 degrees again. The warm air is bent, passes through the warm air discharge port 18, and is discharged into the upper chamber 3B, and exerts a silencing effect due to the pressure loss during this time. However, in the prior art described above, the height _l2 of the duct plate 19 is equal to the warm air outlet 18.
Since the height dimension of the duct passage 20 is twice as large as that of the duct passage 20, the duct passage 20 formed between the duct passages 20 and 20 is also longer, and the noise reduction effect can be enhanced due to the pressure loss of the airflow flowing through the duct passage 20. However, if the pressure loss is large, on the other hand, the volume of cooling air flowing through the compressor main body chamber 4B will decrease, making it impossible to sufficiently cool the compressor main body 11. This has the disadvantage that the temperature of the sealing member, etc. increases significantly. Further, the cooling of the motor 10 also has a similar drawback. On the other hand, in order to compensate for the above-mentioned drawbacks, in the prior art, a large-sized cooling fan 16 was used to ensure the volume of cooling air, but not only did the fan 16 become large, but The motor 11 also had the disadvantage of having to use a large motor. The purpose of this invention is to improve the drawbacks of the prior art described above, and it allows cooling air to flow smoothly through the chamber housing the compressor body and motor, increasing the cooling effect and ensuring a noise reduction effect. The present invention provides a package type compressor which is designed to provide moisture. In order to achieve the above objective, the feature of the configuration adopted by the packaged compressor of the present invention is that the opening of the hot air guiding duct plate is arranged at almost the same height as the hot air outlet. . With the above configuration, the cooling air does not flow at right angles as in the prior art, so the pressure loss of the cooling air that cools the compressor body and motor inside the soundproof box can be reduced. Temperature rise can be kept to a small level. Further, since the direction of the cooling air can be changed at the tip of the opening of the warm air guide duct plate, and the cooling air does not directly pass through the warm air outlet, the desired noise reduction effect can be obtained. Furthermore, the cooling fan and motor can be made smaller in size and manufactured at a lower cost. Hereinafter, the present invention will be explained together with the embodiments shown in FIGS. 2 and 3, and the same components as those of the prior art described above will be denoted by the same reference numerals, and the explanation thereof will be omitted. In the figure, reference numeral 21 denotes a warm air guiding duct plate used in the present invention, and the duct plate 21 is a vertical plate portion 21A formed approximately parallel to the partition wall 2 and spaced apart from it by a predetermined distance.
and a horizontal plate part 21B that extends horizontally from the vertical plate part 21A toward the lower end of the warm air discharge port 18 and is fixed to the partition wall 2, and has an L-shaped cross section.
The upper side thereof becomes an opening 21C, and a duct passage 22 is formed between it and the partition plate 2. On the other hand, the height l ₃ of the vertical plate portion 21A is configured to be approximately equal to the height l ₁ of the warm air discharge port 18. Although the present invention is constructed as described above, its operation as a package type compressor is not particularly different from that of the prior art. However, since the height _l3 of the vertical plate portion 21A is configured to be approximately equal to the height _l1 of the hot air discharge port 18, the cooling air that cools the compressor main body 11 and becomes warm air flows as shown by the arrow in FIG. As shown in Fig. 23, the direction is changed toward the duct passage 22 at the opening 21C, and the warm air discharge port 18
It changes direction again when passing through, and the pressure loss during this time produces a sound-deadening effect. Moreover, since the bending angle at which the cooling air changes direction is within 90 degrees, there is less pressure loss compared to the conventional technology, and the volume of cooling air passing through the warm air discharge port 18 can be increased. It is also possible to enhance the cooling effect of the compressor main body 11. From the above points, according to the present invention, since l ₁ = l ₃ , it is possible to simultaneously satisfy the cooling effect and the silencing effect.

[Table] In the above embodiment, a reciprocating compressor is used as the compressor main body 11, but a rotary compressor such as an oil-cooled compressor may also be used, and the cooling fan 16 may be used in many ways. Not limited to Tsubasa fans,
An axial fan or the like may also be used. On the other hand, the intake port 6,
The exhaust port 7 is not limited to the one provided on the left side plate 1C, and may be provided on the front plate, the rear plate, or the like. moreover,
The motor 10, compressor main body 11, etc. may be arranged so that the compressor main body chamber 4B is at the bottom and the motor chamber 4A is at the top. In this case, the cold air inlet 17 is formed in the upper part, and the warm air outlet 18 is formed in the lower part. Since the package type compressor according to the present invention has been described in detail above, it can satisfy both the noise reduction effect and the cooling effect, and also has the advantage of being able to use a cooling fan and motor with a small size. .

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a package type compressor according to the prior art, FIG. 2 is a longitudinal sectional view of a package type compressor according to the present invention, and FIG. 3 is an enlarged view of the main part of FIG. 2. 1... Soundproof box, 2... Partition wall, 3... One room, 4... Other room, 5... Air tank, 6...
Intake port, 7...Exhaust port, 10...Motor, 11...
...Compressor body, 16...Cooling fan, 17...
Cold air inlet, 18... Warm air discharge port, 21... Warm air guide duct plate, 21A... Vertical plate section, 21B...
...Horizontal plate portion, 21C...opening, 22...duct passage.

Claims (1)

[Scope of utility model registration request] a soundproof box, a partition wall that divides the inside of the soundproof box into two chambers, an air tank accommodated in one chamber within the soundproof box, and a compressor housed in the other chamber within the soundproof box. a main body, a motor that drives the compressor main body, and a cooling fan driven by the motor;
an intake port and an exhaust port located on the one room side and formed in the soundproof box; and a cold air introduction port formed in the partition wall and for introducing cold air from the intake port into the other room by the fan. a hot air discharge port formed in the partition wall and discharging the warm air in the other room to the exhaust port; A package compressor comprising a hot air guiding duct plate that guides indoor warm air toward the hot air outlet, wherein the opening of the duct plate is formed at approximately the same height as the warm air outlet. A package type compressor characterized by: