JP2011080366A - Motor-directly connected compressor unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide motor-directly connected compressor unit with a cooling means for preventing heating of a compressor and easy to transfer without increasing size and the weight of a compressor unit in regard to a compressor unit formed by directly connecting a compressor and a driving motor to each other. <P>SOLUTION: A scroll compressor 20, a sirrocco fan 30 and a driving motor 60 are arranged in this order from upper. An output shaft 62 of the driving motor 60, a rotary shaft 33 of the sirrocco fan 30 and a driving shaft 28 of the scroll compressor 20 are arranged in series to each other on the same straight line, and connected to each other. A housing 32 of the sirrocco fan 30 is fixed to a frame 50, and the frame 50 is supported by legs 54 through a vibration control rubber plate 52. A cooling jacket 40 is provided to cover an upper surface of a housing 21 of the scroll compressor 20, and a discharge opening 31 provided inside of the housing 32 of the sirrocco fan 30 is communicated with the cooling jacket 40 through a duct 44, and air flow (a) is fed from the sirrocco fan 30 to the cooling jacket 40 to cool the scroll compressor 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a motor direct-coupled compressor unit in which a compressor cooling mechanism can be attached without increasing the size or weight of the compressor unit in a compressor unit that can be transported.

  In a manufacturing factory or the like, a compressor room in which a compressor is disposed at a location away from the manufacturing line is provided as a compressed air source used in the manufacturing line of the factory. And compressed air supply piping was laid between the compressor room and each manufacturing site, and compressed air was supplied to the required manufacturing site from the compressor provided in the compressor room. However, with this method, there is a problem in that the installation of the compressed air supply piping is costly and the layout of the compressed air supply piping must be changed when the layout of the manufacturing site that supplies the compressed air changes. It was.

On the other hand, a compressor unit has been proposed in which a compressor and a motor for driving the compressor are integrated and movable. By installing this compressor unit near the manufacturing site where compressed air is required, the compressed air supply piping can be eliminated and the layout change at the manufacturing site can be easily handled, so that the above problems can be solved.
Recently, a cell production system in which products are assembled by a small number of people is attracting attention as a production system suitable for high-mix low-volume production, as opposed to a line production system suitable for mass production. The compressor unit is also suitable for this cell production method.

  Patent Document 1 discloses a compressor unit that facilitates the assembly and separation during maintenance when the compressor and the drive motor are assembled together. This compressor unit has a vertical shape in which a screw compressor is disposed at the bottom and a drive motor is disposed at the top, and the screw compressor and the drive motor are coupled via a coupling casing, and the rotor shaft and motor shaft of the screw compressor are coupled. Are detachably coupled to each other by an insertion-type shaft coupling, and the flange portion of the connection casing is vibration-proof supported on the gantry.

  The compressor unit disclosed in Patent Document 1 is vertical, so that the installation area can be saved, and the connection casing can be mounted via a vibration isolator to suppress vibration generated in the compressor. It is supported on the top.

JP-A-6-193573

Since the compressor generates heat of compression, a means for removing the heat of compression is necessary. In particular, in a compressor unit directly connected to a drive motor, the drive motor is exposed to this compression heat, so removing the compression heat greatly affects the performance of the compressor.
However, since the compressor unit disclosed in Patent Document 1 does not include a cooling unit, this point is not taken into consideration. Moreover, since the compressor unit disclosed by patent document 1 is located under the mount frame arrange | positioned in the horizontal direction, there exists a problem that a heat of compression tends to stay and a heating is accelerated | stimulated. is there.

  On the other hand, even when the compressor unit is provided with a cooling means for compressing heat, there is a concern that the compressor unit becomes large or increases in weight, which is inconvenient for transportation and high in cost. There is.

  Therefore, in view of the problems of the prior art, the present invention provides a cooling unit for preventing the compressor from being heated and increases the size or weight of the compressor unit in the compressor unit in which the compressor and the drive motor are directly connected. It is an object of the present invention to realize a compressor unit that can be easily transported without causing any problems.

In order to solve such a problem, the motor directly connected compressor unit of the present invention is
The compressor and the drive motor of the compressor are arranged in the vertical direction, the rotation shaft of the compressor and the output shaft of the drive motor are connected, and the compressor and the drive motor are supported on the gantry via the vibration isolation mechanism. In the motor direct-coupled compressor unit
The compressor, the blower and the drive motor are arranged in this order from above, the drive shafts of the compressor and the blower and the output shaft of the drive motor are arranged in series, and these are connected to each other.
A cooling jacket disposed so as to cover the compressor housing, and one end connected to the discharge port of the blower housing and the other end connected to the cooling jacket, and the air flow discharged from the discharge port to the cooling jacket And a duct to be supplied.

  Since the compressor unit of the present invention includes the cooling unit having the above-described configuration including the blower, heating of the compressor can be suppressed. In addition, since the blower is disposed between the compressor and the drive motor and the drive motor is kept away from the compression heat generated by the compressor, the drive motor is less affected by the compression heat, and each of the compressor and the blower is Since the drive shaft and the output shaft of the drive motor are arranged in series, the compressor unit can be compactly packed vertically. Further, since the compressor is disposed at the uppermost position of the compressor unit, heat dissipation from the compressor can be promoted, and the cooling effect of the compressor can be enhanced.

  In the compressor unit of the present invention, a blower housing may be fixed on the mount, and the drive shaft of the blower and the output shaft of the drive motor may be connected via an elastic joint. As described above, since the compressor unit is fixed to the gantry through the blower housing disposed between the compressor and the drive motor, the compressor unit can be placed on the floor with good balance.

  In addition, since the drive shaft of the blower and the output shaft of the drive motor are connected via an elastic joint, even if there is a dimensional error during manufacture between the drive shaft of the blower and the output shaft of the drive motor, It is possible to absorb the dimensional error and connect the vibrations, and the vibration transmitted from the drive shaft of the compressor to the drive shaft of the blower can be reduced and transmitted to the output shaft of the drive motor by the elastic joint, so that the vibration of the drive motor can be reduced.

In the compressor unit of the present invention, the blower is a sirocco fan, the housing of the sirocco fan has a circular cross section, an air suction port is disposed around the drive shaft at the center of the housing, and the outer side in the radial direction of the housing It is preferable that an air outlet is provided in the.
Thus, by using a small and lightweight sirocco fan as a blower, it is possible to suppress an increase in size and weight of the compressor unit. Also, by providing an air suction port at the center of the housing and an air flow outlet on the outer peripheral surface of the housing, the air flow discharged in the outer peripheral direction of the housing by the centrifugal force of the rotating blades can flow directly into the duct. . As a result, the bent portion of the air flow path can be reduced and the pressure loss of the air flow can be reduced, so that the cooling air volume can be maintained and the power of the sirocco fan can be reduced.

In the compressor unit of the present invention, the compressor is a scroll compressor, and the drive shaft for turning the orbiting scroll integrally formed with the spiral wrap is connected in series with the drive shaft of the blower and is cooled. The jacket may be disposed so as to cover the upper surface of the housing of the scroll compressor.
As described above, since the scroll compressor having a small number of parts is used as the compressor, it is possible to prevent an increase in size or weight of the compressor unit and to cover the outside of the orbiting scroll body that does not swirl the duct of the cooling air flow. Since it has been arranged, it is easy to arrange the duct.

  According to the compressor unit of the present invention, the compressor and the drive motor of the compressor are arranged in the vertical direction, the rotation shaft of the compressor and the output shaft of the drive motor are connected, and the compressor and the drive motor are arranged. In a motor direct-coupled compressor unit supported on a gantry via a vibration isolation mechanism, the compressor, the blower, and the drive motor are arranged in this order from above, and each drive shaft of the compressor and the blower and the output shaft of the drive motor are arranged. A cooling jacket that is arranged in series and connected to each other so as to cover the compressor housing, one end of which is connected to the discharge port of the blower housing and the other end is connected to the cooling jacket, and the discharge port And a duct for supplying an air flow discharged from the cooling jacket to the cooling jacket, so that heating of the compressor unit can be suppressed, and the compressor unit can be increased in size and weight. It can be suppressed. This facilitates the conveyance of the compressor unit and can easily cope with a change in factory layout.

It is a perspective view concerning one embodiment of a compressor unit to which the present invention is applied. It is the perspective view which looked at the said compressor unit from another direction. It is the perspective view which looked at the said compressor unit from another direction. It is a top view of the said compressor unit. It is sectional drawing which follows the AA line in FIG.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

  An embodiment of a compressor unit to which the present invention is applied will be described with reference to FIGS. 1 to 3, the compressor unit 10 includes a scroll compressor 20 disposed above, a sirocco fan 30 disposed below the scroll compressor 20, and a cooling jacket for cooling the scroll compressor 20. 40, a gantry 50 that supports the compressor unit 10, and a drive motor 60 disposed below the gantry 50.

  The gantry 50 has a flat plate shape, and anti-vibration rubber plates 52 are bonded to four corners on the lower surface of the gantry 50. The gantry 50 is fixed to four legs 54 erected in the vertical direction through the vibration-proof rubber plate 52. This prevents vibration of the scroll compressor 20 from being transmitted to the floor surface F. 2 to 5, illustration of the anti-vibration rubber plate 52 and the legs 54 is omitted.

  A housing 32 of the sirocco fan 30 is fixed to the upper surface of the gantry 50 with bolts 34. The housing 32 has a donut shape, a suction port 36 is provided at the center, and a plurality of blades 38 are arranged in a circular shape inside. A discharge port 31 is provided on the radially outer peripheral side of the housing 32, and the discharge port 31 communicates with the cooling jacket 40 via a duct 44. A scroll compressor 20 is provided above the sirocco fan 30. The cooling jacket 40 is disposed so as to cover the upper surface of the housing 21 of the scroll compressor 20. The cooling jacket 40 has an outlet opening 42 for discharging the airflow a on the side opposite to the connection portion with the duct 44.

  As shown in FIG. 5, the scroll compressor 20 includes a turning scroll 22 integrally formed with a spiral wrap 22a and a fixed scroll 24 integrally formed with a spiral wrap 24a. The spiral wraps 22 a and 24 a form a compression chamber c, and the compressed air compressed in the compression chamber c is discharged from a discharge port 26 provided at the center position of the fixed scroll 24.

  A rotary shaft 33 that is connected to the blades 38 of the sirocco fan 30 and rotates the blades 38 is arranged in series with the drive shaft 28 that turns (revolves) the orbiting scroll 22. It is connected with. The drive shaft 28 and the rotary shaft 33 are arranged in series with the output shaft 62 of the drive motor 60 arranged below the rotary shaft 33, and the lower end of the drive shaft 28 is connected to the output shaft 62 and the rubber joint 64. It is connected through.

  A flange plate 66 a is integrally formed with the housing 66 at the upper end of the motor housing 66 of the drive motor 60. A plurality of metal spacers 68 are inserted between the flange plate 66a and the lower surface of the gantry 50 so as to surround the output shaft 62, and the motor housing 66 is positioned and fixed with respect to the gantry 50 by the spacers 68. Yes. A box-shaped operation panel 61 that controls the drive motor 60 is attached to the motor housing 66.

  In such a configuration, since the output shaft 62 of the drive motor 60, the rotary shaft 33 of the sirocco fan 30, and the drive shaft 28 of the scroll compressor 20 are directly connected, the drive motor 60 is operated by operating the drive motor 60. As a result, the scroll compressor 20 operates and the sirocco fan 30 also operates simultaneously. The scroll compressor 20 turns the orbiting scroll 22 to create compressed air, and discharges the compressed air b from the discharge port 26.

  On the other hand, the sirocco fan 30 is operated, and the blades 38 are rotated to suck air from the suction port 36 and discharge air from the discharge port 31. The air discharged from the discharge port 31 reaches the cooling jacket 40 through the duct 44 and cools the scroll compressor 20 heated by the compression heat. The air flow a after being subjected to cooling is discharged from the outlet opening 42 of the cooling jacket 40.

  According to this embodiment, the scroll compressor 20 having a small number of parts is used as a compressor, and a small and light sirocco fan 30 is used as a blower. These devices and the drive motor 60 are arranged in series in the vertical direction, and the sirocco Since the rotary shaft 33 of the fan 30 and the drive shaft 28 of the scroll compressor 20 are linearly connected to the output shaft 62 of the drive motor 60, the compressor unit 10 can be compactly combined vertically. Therefore, the compressor unit 10 can be saved in space, and the compressor unit 10 can be easily transported, and can easily cope with a change in factory layout.

  Further, since the housing 32 of the sirocco fan 30 is fixed to the upper surface of the gantry 50 and the rotation shaft 33 of the sirocco fan 30 and the output shaft 62 of the drive motor 60 are connected, the compressor unit 10 is stabilized on the floor surface F. Can be placed. Further, since a special support structure for supporting the drive motor 60 is not required, the compressor unit 10 can be further compacted.

  Moreover, the scroll compressor 20 heated by the compression heat can be effectively cooled by operating the sirocco fan 30 by the drive motor 60 and sending the air flow to the cooling jacket 40. Further, since the sirocco fan 30 does not require a separate drive device from the scroll compressor 20 and the scroll compressor 20 is disposed at the top of the compressor unit 10, the heat dissipation effect of the scroll compressor 20 can be improved. Furthermore, since the sirocco fan 30 is interposed between the scroll compressor 20 and the drive motor 60, the influence of the compression heat applied to the drive motor 60 can be reduced, and the performance reduction of the drive motor 60 can be prevented.

  Further, since the rotary shaft 33 of the sirocco fan 30 and the output shaft 62 of the drive motor 60 are connected via a rubber joint 64, there is a dimensional error during manufacture between the rotary shaft 33 and the output shaft 62. However, since this dimensional error can be absorbed and coupled, vibration transmitted from the drive shaft 28 of the scroll compressor 20 to the rotary shaft 33 of the sirocco fan 30 can be relaxed and transmitted to the output shaft 62 of the drive motor 60. The vibration of the drive motor 60 can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, it can be provided with the cooling means which can remove compression heat, can implement | achieve a compact compressor unit without taking a mounting area, and can become a convenient compressed air supply source which can respond to a factory layout change freely. .

DESCRIPTION OF SYMBOLS 10 Compressor unit 20 Scroll compressor 21, 32 Housing 22 Orbiting scroll 22a, 24a Spiral wrap 24 Fixed scroll 26, 31 Discharge port 28 Drive shaft 30 Sirocco fan 33 Rotating shaft 34 Bolt 36 Suction port 38 Blade 40 Cooling jacket 42 Air Outlet 44 Duct 50 Base 52 Anti-vibration rubber plate 54 Leg 60 Drive motor 61 Operation panel 62 Output shaft 64 Rubber joint 66 Motor housing 66a Flange plate 68 Spacer a Air flow b Compressed air c Compression chamber

Claims (4)

The compressor and the drive motor of the compressor are arranged in the vertical direction, the rotation shaft of the compressor and the output shaft of the drive motor are connected, and the compressor and the drive motor are supported on the gantry via the vibration isolation mechanism. In the motor direct-coupled compressor unit
The compressor, the blower and the drive motor are arranged in this order from above, the drive shafts of the compressor and the blower and the output shaft of the drive motor are arranged in series, and these are connected to each other.
A cooling jacket disposed so as to cover the compressor housing, and one end connected to the discharge port of the blower housing and the other end connected to the cooling jacket, and the air flow discharged from the discharge port to the cooling jacket A motor direct-coupled compressor unit comprising: a duct to be supplied.   2. The motor direct-coupled compressor according to claim 1, wherein the blower housing is fixed on the mount, and a drive shaft of the blower and an output shaft of the drive motor are connected via an elastic joint. unit.   The blower is a sirocco fan, the housing of the sirocco fan has a circular cross section, an air suction port is disposed around the drive shaft in the center of the housing, and an air discharge port is provided on the radially outer side of the housing The motor direct connection type compressor unit according to claim 1, wherein the motor direct connection type compressor unit is provided.   The compressor is a scroll compressor, a drive shaft for turning the orbiting scroll integrally formed with the spiral wrap is connected in series with the drive shaft of the blower, and the cooling jacket is compressed by the scroll. The motor direct connection type compressor unit according to claim 1, wherein the motor direct connection type compressor unit is disposed so as to cover an upper surface of a housing of the machine.

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