JP2009257118A - Package type compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lengthen the service life of a stored internal apparatus, by restraining a temperature rise in a package box, by efficiently exhausting high temperature cooling air finished with heat exchange, by adjusting the exhaust flow passage distribution in the package box in a well-balanced state, by reducing ventilation resistance of a suction-exhaust duct. <P>SOLUTION: In this package type compressor, a compressor body 3 has a suction fan 5F on a shaft driven by an outer fan type motor 7. The suction-exhaust duct 2A forms cooling air suction ports 8A and 16 on two surfaces of a side surface plate 2c and a bottom surface plate 2e, and a cooling air exhaust port 9 on an upper surface plate 2d. An inside space of the suction-exhaust duct 2A is partitioned into an intake flow passage 2AS1 and an exhaust flow passage 2AS2 by a suction-exhaust partition frame 10A, and an intake hole 11 communicating with the intake flow passage is arranged in an opposed position of the suction fan 5F of a suction-exhaust duct partition plate 12A, and exhaust holes 17, 18, 191 and 192 communicating with a side part exhaust flow passage 14 are arranged in an opposed position and its upper-lower parts of the outer fan type motor 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a compressor main body that compresses air or the like in a package box, a motor that drives the compressor main body, and a package type compressor that accommodates a tank that stores compressed air, and in particular, improved cooling efficiency. The present invention relates to a package type compressor.

  In general, a package type compressor is a compressor body that compresses a gas such as air, a tank that stores compressed fluid (compressed air) compressed by the compressor body, and an outer fan that drives a pulley attached to a rotating shaft of the compressor body by a belt. A device such as a mold motor is housed in a package box to reduce noise generated when the compressor body operates.

  The package box is formed in a rectangular parallelepiped shape from a total of five plates including a front plate, left and right side plates, a top plate, and a bottom plate. An intake / exhaust duct is attached to the back of the package box, and during operation of the package compressor, cooling air is sucked into and exhausted from the intake / exhaust duct into the package box by a cooling fan attached to the pulley so that the stored internal equipment is cooled. (For example, refer to Patent Document 1).

  8 and 9 are diagrams showing an outline of the package type compressor described in Patent Document 1. Particularly, FIG. 8 is a front perspective view showing a package box and an intake / exhaust duct attached to the package box, and FIG. It is a disassembled perspective view which shows a mode that a compressor main body, a tank, and an external fan type motor are accommodated in the package box of FIG. 8, and an air supply / exhaust duct is attached.

8 and 9, the package box 1 includes five plates, a front plate 1a, left and right side plates 1b, 1c, a top plate 1d, and a bottom plate 1e, having a width W, a height H, and a depth D _1. Compressor body 3 that compresses a gas such as air, tank 4 that stores compressed fluid (compressed air) compressed by compressor body 3, and fixed to the rotation shaft of compressor body 3 An outer fan motor 7 for driving the pulley 5 thus driven by a belt 6 is housed. The pulley 5 serves as a cooling fan and a flywheel.

  Although the configuration on the output shaft side of the outer fan type motor 7 is not shown, the pulley 5 provided on the rotating shaft of the compressor body 3 is driven by the pulley provided on the output shaft of the motor 7 via the belt 6. In relation, the outer fan 7F of the motor 7 is arranged on the front side in the figure of the package box 1 which is opposite to the output shaft to which the pulley 5 is attached.

A supply / exhaust duct 2 is attached to the back of the package box 1 configured as described above. The intake / exhaust duct 2 has a width and a height of 5 plates, that is, left and right side plates 2b, 2c, top plate 2d, bottom plate 2e, and back plate 2f, excluding a surface attached to the back of the package box 1. It is configured as a rectangular parallelepiped having the same W and H as the package box 1 and D ₂ (D ₁ > D ₂ ) shallower than the package box 1.

  The intake / exhaust duct 2 is provided with a side intake port 8 on the right side plate 2c and an upper exhaust port 9 on the upper side plate 2d as viewed from the front of the figure, and the side intake port 8 has an inverted U-shaped intake / exhaust partition frame. 10, the internal space is partitioned into an intake flow path 2S1 located near the side intake port 8 and an exhaust flow path 2S2 located above, below and on the left side of the intake flow path, and vice versa. The intake passage 2S1 surrounded by the U-shaped intake / exhaust partition frame 10 and the exhaust passage located on the left side are integrally closed by an intake / exhaust duct partition plate 12 having an intake hole 11 formed therein.

  An intake hole 11 provided in the intake / exhaust duct partition plate 12 is opened at a position facing the pulley 5 that also serves as a cooling fan and a flywheel, and the cooling air Air passes through the intake hole 11 into the package box 1. It comes to be sucked.

  By dividing the inside of the intake / exhaust duct 2 into the intake flow path 2S1 and the exhaust flow path 2S2 as described above, the lower exhaust flow path 13 and the side are respectively provided on the lower side, the side part, and the upper side of the intake / exhaust partition frame 10. A partial exhaust passage 14 and an upper exhaust passage 15 are formed.

  Here, since the height of the right side plate 2c is H, if the heights of the lower exhaust passage 13 and the upper exhaust passage 15 are Hd and Hu, respectively, the length He in the height direction of the side intake port 8 will be described. Becomes He = H-Hd-Hu.

During the operation of the package compressor, the cooling air Air flows from the side intake port 8 into the intake passage 2S1 in the intake / exhaust duct 2 due to the rotation of the pulley 5 driven by the outer fan type motor 7, and the pulley 5 After the intake fan effect further flows into the package box 1 from the intake hole 11 to cool the internal devices such as the compressor body 3, the tank 4, and the motor 7, a part of the cooling air Air branches off and the lower exhaust passage 13 is exhausted from the upper surface exhaust port 9 through the side exhaust channel 14 and the upper exhaust channel 15, and the other cooling air is directly exhausted from the upper surface exhaust port 9 through the upper exhaust channel 15.
JP 2004-251147 A

  In the conventional package type compressor, the cooling air Air that has flowed into the intake passage 2S1 in the intake / exhaust duct 2 from the side intake port 8 during operation is separated from the intake / exhaust duct 2 and the inside of the package box 1 12 flows into the inside of the package box 1 from the air intake hole 11 provided in 12 and cools internal equipment, and then passes from the lower exhaust passage 13 to the side exhaust passage 14 and the upper exhaust passage 15 to the upper surface exhaust port 9. Since the intake / exhaust duct 2 is configured so as to be exhausted from the upper exhaust passage 15 and exhausted directly from the upper exhaust port 9, the opening area of the side intake port 8 is the lower exhaust passage 13 and the upper side. Since the exhaust passage 15 is provided, the height is limited only by the height dimensions Hd and Hu, so that it cannot be made large. If a sufficient size of the opening area of the side intake port 8 cannot be secured, the ventilation resistance loss of the intake opening portion 8 cannot be reduced, so that a sufficient amount of cooling air cannot be secured.

  In addition, the conventional package type compressor has two exhaust air flow paths for the cooling air Air, the lower exhaust flow path 13 and the upper exhaust flow path 15, but the distribution of the exhaust flow rate flowing through the both systems 13 and 15 is adjusted. It was difficult to balance. If the flow rate distribution between the exhaust flow rate flowing through the lower exhaust flow channel 13 and the exhaust flow rate flowing through the upper exhaust flow channel 15 cannot be adjusted to balance, the cooling air whose temperature has risen after the heat exchange is finished can be efficiently used. As a result, the inside of the package box 1 could not be cooled with an efficiency commensurate with the fan effect of the pulley.

  Therefore, the object of the present invention has been made in view of the above circumstances, and while reducing the ventilation resistance of the intake and exhaust ducts and adjusting the distribution of the exhaust passages in the package box in a balanced manner, It is an object of the present invention to provide a package type compressor capable of efficiently exhausting high cooling air, suppressing a temperature rise in the package box, and extending the life of the stored internal equipment.

  In order to achieve the above object, the invention according to claim 1 is an internal device such as a compressor main body that compresses gas, an external fan motor that drives the compressor main body, and a tank that stores gas compressed by the compressor main body. And a package box that is attached to one surface of the package box via an intake / exhaust duct partition plate, and is divided into an intake channel and an exhaust channel by an intake / exhaust partition frame, In the package type compressor, comprising: an intake port for introducing cooling air; and an intake / exhaust duct having an exhaust port for exhausting the cooling air heat-exchanged with the internal device to the outside through the exhaust flow path. A suction fan is provided on a shaft driven by the outer fan type motor, and the intake / exhaust duct is cooled on two sides of a side plate and a bottom plate. The air intake port is formed with a cooling air exhaust port on the top plate, and the internal space is partitioned by the intake / exhaust partition frame into an intake channel and an exhaust channel communicating with the side plate and the bottom plate. In addition, an intake hole that communicates with the intake flow path is provided at a position opposite to the suction fan of the intake / exhaust duct partition plate, and the side exhaust flow is provided at a position opposite to and above and below the outer fan type motor. An exhaust hole communicating with the road is provided.

  According to the present invention, the intake / exhaust duct is formed with the cooling air intake port on the two surfaces of the side plate and the bottom plate, and the cooling air exhaust port on the top plate, so that the area of the intake opening can be increased. Thus, it is possible to provide a package type compressor that can reduce the ventilation resistance loss of the intake opening and improve the cooling efficiency by increasing the amount of cooling air.

  In addition, the intake / exhaust duct partition plate that separates the intake / exhaust duct from the package box is provided with an exhaust hole at a position facing the outer fan type motor, so that the cooling after the heat exchange in the package is completed by the outer fan of the motor. Since air can be efficiently exhausted, it is possible to provide a package type compressor that can suppress an increase in temperature in the package and can extend the life of components.

  Hereinafter, an embodiment of a packaged compressor according to the present invention will be described with reference to the drawings. In addition, the overlapping description is abbreviate | omitted suitably by attaching | subjecting the same code | symbol or a related code | symbol to the element which is common in each figure including FIG.

(First embodiment)
The first embodiment of the present invention will be described below with reference to FIG.
FIG. 1 is a perspective view showing a mounting state of a package box and an intake / exhaust duct, FIG. 2 is a perspective view showing an exploded state of a package box containing an internal device and an intake / exhaust duct, and FIG. 3 is a detailed view of a flywheel. It is.

(Constitution)
In FIG. 1 and FIG. 2, the package box 1 is a total of five plates, a front plate 1a, left and right side plates 1b, 1c, a top plate 1d, and a bottom plate 1e, as in the prior art. Is a rectangular parallelepiped with a depth of D ₁ and a compressor body 3 for compressing a gas such as air therein, and a tank 4 for storing a compressed fluid (compressed air) compressed by the compressor body 3 An outer fan type motor 7 for driving a pulley 5 provided in the compressor body 3 by a belt 6 is housed.

  As shown in FIG. 3, the pulley 5 is configured to have a plurality of blades 5F on the inner diameter side so as to function as a suction fan and as a flywheel. When the pulley 5 rotates, the package box 1 Cooling air is sucked into the inside.

On the other hand, the intake / exhaust duct 2A attached to the back side of the package box 1 has five surfaces, left and right side plates 2b, 2c, top plate 2d, bottom plate 2e and back plate 2f, excluding the attachment surface to the package box 1. Are formed in a rectangular parallelepiped having the same width and height as those of the package box 1 and a depth of D ₂ (D ₁ > D ₂ ) which is shallower than that of the package box 1.

  Moreover, the intake / exhaust duct 2A is provided with a side intake port 8A on the right side plate 2c, a bottom intake port 16 on the bottom plate 2e, and a top exhaust port 9 on the top plate 2d as viewed from the front of the drawing. Then, one end of the intake / exhaust partition frame 10A formed in an inverted L shape is attached to the inner side of the right side plate 2c, and the other end is attached to the inner side of the bottom plate 2e. And an inverted L-shaped exhaust passage 2AS2 communicating with the upper surface exhaust port 9. The exhaust passage 2AS2 has a side exhaust passage 14 and a top exhaust passage 15 as will be described later.

  The surface of the intake / exhaust duct 2A on the package box 1 side has an area having the same width W and height H as the intake / exhaust duct 2A, and communicates with the intake passage 2AS1 and the exhaust passage 2AS2 The exhaust holes 17 and 18 and the two upper exhaust holes 191 and 192 communicating with each other are attached so as to be closed by the intake / exhaust duct partition plate 12A.

  The intake hole 11 is opened at a position facing the pulley 5, the exhaust hole 17 is opened at a position facing the outer fan motor 7, and a lower exhaust hole 18 and two upper exhaust holes 191, 192 are formed. The exhaust passage 2AS2 is opened so as to communicate with it.

  Note that the lower exhaust hole 18 and the two upper exhaust holes 191 and 192 have, for example, the size of the exhaust area and the number of holes in the prototype stage in order to adjust the distribution of the exhaust passage in the package box 1 in a balanced manner. It can be adjusted.

  As apparent from FIGS. 1 and 2, the length He in the height direction of the side air inlet 8A according to this embodiment is lower than the conventional side air inlet 8 shown in FIGS. 8 and 9. The length is increased by 13 including the height Hd, and the opening area is increased by the increased length.

  Moreover, the inverted L-shaped intake / exhaust partition frame 10A differs from the inverted U-shaped intake / exhaust partition frame 10 shown in FIGS. 8 and 9 in that the inverted L-shaped intake / exhaust partition frame 10A has a side exhaust channel 14 and an upper exhaust channel 15. It is attached so as to surround the side intake port 8A and the bottom intake port 16 so as to form a letter-shaped exhaust flow path 2AS2.

  Therefore, the size of the intake flow path 2AS1 surrounded by the inverted L-shaped intake / exhaust partition frame 10A is the same as the intake flow path 2S1 surrounded by the inverted U-shaped intake / exhaust partition frame 10 shown in FIGS. Greater than.

  Further, the intake / exhaust duct partition plate 12A according to the present embodiment is also different from the conventional intake / exhaust duct partition plate 12 having the area of (W × He) shown in FIGS. And it is comprised with the big board which has an area of (WxH) of the same dimension in height.

(Function)
When the pulley 5 of the compressor body 3 is rotated by the belt drive by the outer fan type motor 7, the cooling air Air1 and Air2 flow into the intake passage 2AS1 from the side intake port 8A and the bottom intake port 16, respectively, by the suction action of the fan 5F. Further, the air flows into the package box 1 from the intake holes 11 provided in the intake / exhaust duct partition plate 12A.

  The cooling air that has flowed into the package box 1 cools the internal equipment that is housed, and a part of the air is taken in from the exhaust hole 17 while cooling the casing of the motor 7 by the blowing action of the outer fan 7F of the motor 7. The air is exhausted to the side exhaust passage 14 of 2A. Other cooling air that is not exhausted by the outer fan 7F of the motor 7 is exhausted from the lower exhaust hole 18 to the side exhaust passage 14 of the intake / exhaust duct 2A and directly from the upper exhaust holes 191 and 192. The flow is divided into a flow exhausted to the flow path 15. And finally, it exhausts outside from the upper surface exhaust port 9 provided above the intake / exhaust duct 2A.

(effect)
As described above, according to the package type compressor of the present embodiment, the opening area of the side intake port 8 provided in the intake / exhaust duct 2A can be increased, and the intake port 16 is also provided on the bottom surface. Since the total area of the opening can be made much larger than that of the conventional example, the ventilation resistance loss in the intake opening can be reduced, and the cooling efficiency can be improved by increasing the amount of cooling air.

  In addition, since the air whose temperature has increased after the heat exchange is discharged from the upper surface exhaust port 9 provided above the package box 1, the air temperature around the package box 1 becomes lower near the floor surface, and the bottom surface becomes lower. By providing the opening 16, cooling air having a low temperature can be used for cooling the package, and the cooling effect is improved.

  Further, the intake / exhaust duct partition plate 12A that partitions the intake / exhaust duct 2A and the package box 1 is provided with an exhaust hole 17 at a position facing the outer fan motor 7, thereby cooling generated by the outer fan 7F of the motor 7. The cooling air in the package box 1 can be efficiently exhausted by actively using air, the temperature rise in the package box 1 can be suppressed, and the life of the component equipment can be extended.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a perspective view showing an intake / exhaust duct according to a second embodiment of the present invention.

(Constitution)
This embodiment is different from the first embodiment in that the side plate 2c provided with the side intake port 8A of the intake / exhaust duct 2A is not the same surface as the right side plate 1c of the package box 1 but is shown from the right side plate 1c. formed with a tilted theta _H in the horizontal direction about the left, there the width of the back of the intake and exhaust ducts 2A in that smaller than the width of the package box.

(Function)
When the pulley 5 of the compressor body 3 is rotated by the belt drive by the outer fan type motor 7, the cooling air Air1 from the side air inlet 8A and the bottom air inlet 16 are caused by the air suction action of the fan 5F, respectively, as in the first embodiment. Air2 flows into the intake passage 2AS1, and further flows into the package box 1 from the intake hole 11 provided in the intake / exhaust partition frame 10A. In the case of this embodiment, the cooling air Air1 has an angle in the horizontal direction. It bends at a gentle angle from the side intake port 8A inclined by θ _H and flows into the intake / exhaust duct 2A, and further flows into the package box 1 through the intake hole 11.

  After flowing into the package box 1, as in the first embodiment, the housed internal equipment is cooled, and part of the motor 7 is further cooled by the air blowing action of the outer fan 7 F of the motor 7. The air is exhausted from the exhaust hole 17 to the side exhaust passage 14 of the intake / exhaust duct 2A. Other cooling air that is not exhausted by the outer fan 7F of the motor 7 is exhausted from the lower exhaust hole 18 to the side exhaust passage 14 of the intake / exhaust duct 2A and directly from the upper exhaust holes 191 and 192. The flow is divided into a flow exhausted to the flow path 15. And finally, it exhausts outside from the upper surface exhaust port 9 provided above the intake / exhaust duct 2A.

(effect)
As described above, according to the package type compressor of the present embodiment, the area of the intake port can be increased compared to the case where the side plate 2c is attached at a right angle as in the first embodiment. The airflow resistance loss at the intake port can be reduced, and the cooling efficiency can be improved by increasing the amount of cooling air. Further, since the bending angle in the intake / exhaust duct 2A becomes loose, the cooling air can smoothly pass through the intake holes 11, the loss of ventilation resistance can be reduced, and the cooling efficiency is improved by increasing the amount of cooling air. It can be expected from the embodiment.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a perspective view showing an intake / exhaust duct according to a third embodiment of the present invention.

(Constitution)
This embodiment is different from the first embodiment in that the bottom plate 2e provided with the bottom suction port 16 of the intake / exhaust duct 2A is not the same surface as the installation surface of the package box 1, but is perpendicular to the installation surface. there is the point that was formed with the only inclination angle θ _V in.

(Function)
When the pulley 5 of the compressor body 3 is rotated by the belt drive by the outer fan motor 7, the cooling air Air1, from the side intake port 8A and the bottom intake port 16, respectively, by the suction action of the fan 5F, as in the first and second embodiments. Air 2 flows into the intake flow path 2AS1, and further flows into the package box 1 through the intake holes 11 provided in the intake / exhaust duct partition plate 12A. In the case of this embodiment, the cooling air Air2 is particularly vertically oriented. bend at a moderate angle from the angle theta _V inclined bottom inlet port 16 flows into the air suction and discharge duct partition plate 12A, further through the intake hole 11 flows into the package box 1.

  After flowing into the package box 1, as in the first and second embodiments, the housed internal equipment is cooled, and some of the casing of the motor 7 is further cooled by the blowing action of the outer fan 7F of the motor 7. However, the air is exhausted from the exhaust hole 17 to the side exhaust passage 14 of the intake / exhaust duct 2A. Other cooling air that is not exhausted by the outer fan 7F of the motor 7 is further exhausted from the lower exhaust hole 18 to the side exhaust passage 14 of the intake / exhaust duct 2A and directly from the upper exhaust holes 191 and 192. The flow is divided into a flow exhausted to the exhaust flow path 15. And finally, it exhausts outside from the upper surface exhaust port 9 provided above the intake / exhaust duct 2A.

(effect)
As described above, according to the package type compressor of the present embodiment, the area of the intake opening can be increased compared to the case where the bottom plate 2e is attached at a right angle as in the first embodiment. Ventilation resistance loss at the intake opening can be reduced, and the amount of cooling air increases. Further, since the flow rate of the cooling air having a low temperature near the floor surface is increased, the cooling efficiency is improved. Further, since the bending angle in the intake / exhaust duct 2A becomes loose, the cooling air can smoothly pass through the intake holes, the ventilation resistance loss can be reduced, and the cooling efficiency is increased by increasing the cooling air amount. Expect more than the form.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a perspective view showing an intake / exhaust duct according to a fourth embodiment of the present invention.

(Constitution)
This embodiment combines the features of the second embodiment and the third embodiment, and the side plate 2c provided with the side intake port 8A of the intake / exhaust duct 2A is changed from the right side plate 1c of the package box 1. with ramping only theta _H in the leftward around, in that the formation of the bottom plate 2e of the bottom inlet port 16 of the intake and exhaust ducts 2A is provided from the mounting surface of the package box 1 with the upward theta _V inclined by is there.

(Function)
When the pulley 5 of the compressor body 3 is rotated by the belt drive by the outer fan motor 7, the cooling air Air1 and Air2 are respectively supplied from the side air inlet 8A and the bottom air inlet 16 by the air suction action of the fan 5F, as in the first embodiment. Flows into the intake passage 2AS1 and further flows into the package box 1 through the intake holes 11 provided in the intake / exhaust duct partition plate 12A. In the case of this embodiment, the cooling air Air1 and Air2 are in the horizontal direction. the angle theta _H angled bent from the side surface air inlet 8A and the vertical direction at an angle theta _V inclined bottom inlet port 16 at a moderate angles to flow into the intake and exhaust duct 2A, the package box 1 through further suction hole 11 Flow into.

  After flowing into the package box 1, as in the first embodiment, the housed internal equipment is cooled, and part of the motor 7 is further cooled by the air blowing action of the outer fan 7 F of the motor 7. The air is exhausted from the exhaust hole 17 to the side exhaust passage 14 of the intake / exhaust duct 2A. Other cooling air that is not exhausted by the outer fan 7F of the motor 7 is further exhausted from the lower exhaust hole 18 to the side exhaust passage 14 of the intake / exhaust duct 2A and directly from the upper exhaust holes 191 and 192. The flow is divided into a flow exhausted to the exhaust flow path 15. And finally, it exhausts outside from the upper surface exhaust port 9 provided above the intake / exhaust duct 2A.

(effect)
According to the package type compressor of the present embodiment, the combined effects of the second embodiment and the third embodiment can be achieved.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a perspective view showing an intake / exhaust duct according to a fifth embodiment of the present invention.

(Constitution)
This embodiment is different from the first embodiment in that the corner portion of the substantially inverted L-shaped intake / exhaust partition frame 10 </ b> A provided in the intake / exhaust duct 2 </ b> A is formed in an arcuate shape, thereby 14 is that the bent corner portion extending from 14 to the upper exhaust flow path 15 is formed in an arc shape 10A-1.

(Function)
When the pulley 5 of the compressor body 3 is rotated by the belt drive by the outer fan motor 7, the cooling air Air1 and Air2 are respectively supplied from the side intake port 8A and the bottom intake port 16 by the suction action of the fan 5F, as in the first embodiment. It flows into the intake passage 2AS1 and further flows into the package box 1 from the intake holes 11 provided in the intake / exhaust duct partition plate 12A.

  After flowing into the package box 1, as in the first embodiment, the housed internal equipment is cooled, and part of the motor 7 is further cooled by the air blowing action of the outer fan 7 F of the motor 7. The air is exhausted from the exhaust hole 17 to the side exhaust passage 14 of the intake / exhaust duct 2A. Other cooling air that is not exhausted by the outer fan 7F of the motor 7 is further exhausted from the lower exhaust hole 18 to the side exhaust passage 14 of the intake / exhaust duct 2A and directly from the upper exhaust holes 191 and 192. The flow is divided into a flow exhausted to the exhaust flow path 15. When the flow exhausted from the exhaust hole 17 to the side exhaust flow path 14 and the flow exhausted from the lower exhaust hole 18 to the side exhaust flow path 14 merge into the upper exhaust flow path 15, Since the corner portion of the exhaust partition frame 10A has an arc shape, it flows smoothly into the upper exhaust flow path 15 and is finally exhausted to the outside from the upper surface exhaust port 9.

(effect)
According to the package type compressor of the present embodiment, in addition to the operational effects of the first embodiment, it is possible to reduce the ventilation resistance loss when cooling air escapes to the upper surface exhaust port 9 and increase the amount of cooling air As a result, the cooling efficiency can be further improved.

(Modification)
In the first to fifth embodiments described above, the intake / exhaust partition frame 10A having a substantially inverted L shape is employed, but the present invention is not limited to this, and the inside of the intake / exhaust duct 2A is arranged. As long as it has a shape partitioned into an intake flow path 2AS1 that communicates with the side intake port 8A and the bottom surface intake port 16 and an exhaust flow path 2AS2 that includes the side exhaust passage 14 and the upper surface exhaust passage 15 and communicates with the upper surface exhaust port 9 Any shape is acceptable.

  For example, the intake / exhaust partition frame 10 </ b> A may be an arc having a larger radius than that of FIG. 7 or an elliptical arc, and may have a shape obtained by cutting a corner portion of an inverted L shape into a straight line.

The perspective view which shows the package box and intake / exhaust duct of the 1st Embodiment of this invention. The disassembled perspective view which shows the package box and intake / exhaust duct of the 1st Embodiment of this invention. The detail drawing of the pulley in the 1st Embodiment of this invention. The perspective view which shows the intake / exhaust duct of the 2nd Embodiment of this invention. The perspective view which shows the intake / exhaust duct of the 3rd Embodiment of this invention. The perspective view which shows the intake / exhaust duct of the 4th Embodiment of this invention. The perspective view which shows the intake / exhaust duct of the 5th Embodiment of this invention. The perspective view which shows the package box and intake / exhaust duct of the conventional package type compressor. The exploded view which shows the package box and intake / exhaust duct of the conventional package type compressor.

Explanation of symbols

  Air1, Air2 ... Cooling air, 1 ... Package box, 2A ... Intake / exhaust duct, 2AS1 ... Intake passage, 2AS2 ... Exhaust passage, 2b ... Side plate, 2e ... Bottom plate, 3 ... Compressor body, 4 ... Tank, 5 ... Pulley, 5F ... Vane, 6 ... Belt, 7 ... Outer fan motor, 7F ... Outer fan, 8A ... Side inlet, 9 ... Top exhaust, 10A ... Suction / exhaust partition frame, 11 ... Suction hole, 12A ... Suction Exhaust duct partition plate, 13 ... lower exhaust flow path, 14 ... side exhaust flow path, 15 ... upper exhaust flow path, 16 ... bottom inlet, 17, 18, 191, 192 ... exhaust holes.

Claims (9)

A compressor body that compresses gas, an external fan motor that drives the compressor body, a package box that houses internal devices such as a tank that stores gas compressed by the compressor body, and
An intake port that is attached to one surface of the package box via an intake / exhaust duct partition plate, and is divided into an intake channel and an exhaust channel by an intake / exhaust partition frame, and further introduces cooling air into the intake channel And an intake / exhaust duct having an exhaust port for exhausting the cooling air heat-exchanged with the internal device to the outside through the exhaust passage,
The compressor body is provided with a suction fan on a shaft driven by the outer fan motor,
The intake / exhaust duct has a cooling air intake port formed on two sides of the side plate and the bottom plate, a cooling air exhaust port formed on the top plate, and an internal space defined by the intake / exhaust partition frame. An intake passage that communicates with the intake port and an exhaust passage are partitioned, and an intake hole that communicates with the intake passage is provided at a position opposite to the suction fan of the intake and exhaust duct partition plate. A package-type compressor, characterized in that an exhaust hole communicating with the side exhaust passage is provided at a position opposite to the fan-shaped motor and at upper and lower portions thereof.   The package type compressor according to claim 1, wherein the compressor body is provided with a pulley driven by the outer fan type motor, and the pulley and the suction fan are integrally provided.   2. The package compressor according to claim 1, wherein a side plate forming a side air intake portion of the intake / exhaust duct is attached at an angle inclined in a horizontal direction with respect to the side plate of the package box.   2. The package compressor according to claim 1, wherein a bottom plate having a bottom air intake portion of the intake / exhaust duct is attached at an angle inclined in a direction perpendicular to the installation surface.   The side plate having the side intake portion of the intake / exhaust duct is attached at an angle inclined with respect to the side plate of the package box, and the bottom plate having the bottom intake portion of the intake / exhaust duct is perpendicular to the installation surface The package type compressor according to claim 1, wherein the package type compressor is mounted at an inclined angle.   The intake / exhaust partition frame is formed in a substantially inverted L shape, one end is fixed to the side plate, and the other end is fixed to the bottom plate, whereby the intake / exhaust duct internal space is sucked into the side plate and the bottom plate. It is characterized in that it is divided into three flow paths: an intake flow path communicating with the mouth, a side exhaust flow path positioned on the side of the intake flow path, and an upper exhaust flow path positioned above the intake flow path. The package type compressor according to claim 1.   7. The package type compressor according to claim 6, wherein corner portions of the substantially inverted L-shaped intake / exhaust partition frame are formed in an arc shape.   7. The package type compressor according to claim 6, wherein the intake / exhaust partition frame is changed to an inverted L-shape, and is formed into an elliptically curved intake / exhaust partition frame.   7. The package type compressor according to claim 6, wherein the intake / exhaust partition frame is changed to an inverted L-shape and is formed into an intake / exhaust partition frame having a shape in which corners are linearly cut.

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