US20110081262A1 - Motor-directly connected compressor unit - Google Patents
Motor-directly connected compressor unit Download PDFInfo
- Publication number
- US20110081262A1 US20110081262A1 US12/889,041 US88904110A US2011081262A1 US 20110081262 A1 US20110081262 A1 US 20110081262A1 US 88904110 A US88904110 A US 88904110A US 2011081262 A1 US2011081262 A1 US 2011081262A1
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- United States
- Prior art keywords
- compressor
- housing
- motor
- blower
- sirocco fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
Definitions
- the present invention relates to a transportable motor-directly connected compressor unit in which a compressor is directly connected to a motor, to which a cooling mechanism of a compressor can be annexed without making the compressor increase in size or weight.
- a compressor room housing a compressor is provided in a remote place from a manufacturing line to supply compressed air to be used in the manufacturing line at the plant.
- a compressed air supply pipe is installed between the compressor room and each manufacturing floor to supply the compressed air from the compressor arranged in the compressor room to a manufacturing floor needing the compressed air.
- a transportable compressor unit in which a compressor and a motor are integrated.
- the transportable compressor unit can be installed near the manufacturing floor in need.
- the compressed air supply pipes are eliminated and the compressor unit can easily accommodate the layout change of the manufacturing floor, thereby solving the above issue.
- Patent Document 1 discloses a compressor unit integrating a compressor and a drive motor.
- the compressor unit is constructed so that the compressor and the drive motor can be easily separated for assembling or maintenance.
- the compressor unit is a vertical unit having a screw compressor under the compressor unit and a drive motor on top of the compressor unit.
- the screw compressor and the drive motor are coupled via a coupling casing and a rotor shaft of the screw compressor and a motor shaft of the drive motor are detachably connected via a shaft coupling which is insertable, and the coupling casing is supported on a mount of a flange by vibration-proof installation.
- the compressor unit disclosed in Patent Document 1 is the vertical unit to save the installation space and the coupling casing is mounted on the mount via an anti-vibration member to suppress the vibration from the compressor.
- the compressor unit disclosed in Patent Document 1 is not equipped with a cooling means and thus, does not take measure against the issue. Further, in the compressor unit of Patent Document 1, the compressor is arranged below the mount that is disposed horizontally, and thus the compression heat tends to be retained there, thereby promoting the area to be heated.
- providing a cooling means in the compression unit means a larger compressor unit, or a heavier compressor unit, which makes the transportation thereof inconvenient and expensive.
- an object of the present invention is to realize a motor-directly connected compressor unit, which is equipped with a cooling means for preventing the compressor from being heated, and is easy to transfer without upsizing the compressor unit in size or weight.
- the present invention proposes a motor-directly connected compressor unit in which a compressor is directly connected to a motor, comprising: a compressor having a rotation shaft; a drive motor arranged below the compressor and having an output shaft that is connected to the rotation shaft of the compressor; an anti-vibration mechanism via which the compressor and the drive motor being supported on a mount; a blower arranged between the compressor and the drive motor and having a drive shaft that is connected to the rotation shaft of the compressor at one end and to the output shaft of the drive motor at the other end; a cooling jacket arranged to at least partially cover a housing of the compressor; and a duct connected to an outlet of a housing of the blower at one end and to the cooling jacket at the other end so as to supply air discharged from the outlet of the housing of the blower to the cooling jacket.
- the compressor unit of the present invention is equipped with a cooling means of above structure including the blower to suppress the heating of the compressor. Further, the blower is installed between the compressor and the drive motor and thus the drive motor is kept away from the compression heat generated in the compressor. As a result, the drive motor is insusceptible to the effect of the compression heat. Furthermore, the rotation shaft of the compressor, the drive shaft of the blower and the output shaft of the drive motor are disposed in a linear manner and thus, the compressor unit can be made compact in the vertical direction. Moreover, the compressor is installed on the top of the compressor unit so as to promote the heat release effect of the heat dissipation from the compressor, thereby improving the cooling effect of the compressor.
- the housing of the blower is fixed on the mount, and the drive shaft of the blower is connected to the output shaft of the drive motor via an elastic coupling.
- the compressor unit is fixed to the mount via the blower housing which is installed between the compressor and the drive motor, and thus the compressor unit can be installed securely on the floor.
- the drive shaft of the blower and the output shaft of the drive motor are connected via the elastic coupling.
- the blower includes a sirocco fan whose housing has a circular cross-sectional shape and which has an air inlet arranged in a central part of the housing and an air outlet arranged in a radially-outer part of the housing, the air inlet of the sirocco fan surrounding the drive shaft.
- the sirocco fan being small and light is used so that the compressor unit does not get bigger in size or weight.
- the air inlet is arranged in the center part of the housing and the air outlet is arranged in the radially-outer part of the housing so that the air discharged in the radial direction of the housing by centrifugal force of the blades can be introduced to the duct directly.
- the flections of the airflow are reduced and the pressure loss of the airflow is reduced as well.
- the compressor includes a scroll compressor in which an orbiting scroll formed integrally with a spiral lap is orbited by the rotation shaft of the compressor, the rotation shaft of the compressor and the drive shaft of the blower are linearly arranged in series, and the cooling jacket is arranged such as to cover a top surface of the compressor housing.
- the scroll compressor having fewer parts is used so that the compressor unit does not get bigger in size or weight.
- the duct for the cooling air is arranged to cover the outside of the fixed or orbiting scroll, thereby making the installation of the duct easier.
- the motor-directly connected compressor unit in which a compressor is directly connected to a motor comprises: a compressor having a rotation shaft; a drive motor arranged below the compressor and having an output shaft that is connected to the rotation shaft of the compressor; an anti-vibration mechanism via which the compressor and the drive motor being supported on a mount; a blower arranged between the compressor and the drive motor and having a drive shaft that is connected to the rotation shaft of the compressor at one end and to the output shaft of the drive motor at the other end; a cooling jacket arranged to at least partially cover a housing of the compressor; and a duct connected to an outlet of a housing of the blower at one end and to the cooling jacket at the other end so as to supply air discharged from the outlet of the housing of the blower to the cooling jacket.
- the heating of the compressor unit is suppressed and the upsizing of the compressor unit in size or weight is not required. Therefore, it is easier to transport the compressor unit and to meet the layout change of the plant
- FIG. 1A perspective view of a compressor unit of one preferred embodiment, to which the present invention is applied.
- FIG. 2 A perspective view of the compressor unit from a different angle from FIG. 1 .
- FIG. 3 A perspective view of the compressor unit from another different angle from FIG. 1 and FIG. 2 .
- FIG. 4 A flat view of the compressor unit.
- FIG. 5 A sectional view of the compressor unit taken along the line A-A of FIG. 4 .
- a compressor unit 10 comprises a scroll compressor 20 arranged above the compressor unit 10 , a sirocco fan 30 arranged under the scroll compressor 20 , a cooling jacket 40 for cooling the scroll compressor 20 , a mount 50 for supporting the compressor unit 10 , and a drive motor 60 arranged below under the mount 50 .
- the mount 50 is formed flat and has anti-vibration rubber pads 52 adhered on the bottom surface thereof at four corners thereof. There are four legs 54 installed upright on the floor. The mount 50 is installed securely on the four legs 54 via the anti-vibration pads 52 . In this manner, the vibration of the scroll compressor 20 is kept from being transmitted to the floor F.
- the vibration pads 52 and the legs 54 are illustrated only in FIG. 1 .
- a housing 32 for the sirocco fan 30 is fixed to a top surface of the mount via bolts 34 .
- the fan housing is in a shape of a doughnut and has an air inlet arranged in a center part of the housing and houses a plurality of blades 38 disposed circularly.
- An air outlet 31 is arranged in a radially-outer part of the housing 32 .
- the air outlet 31 is in communication with the cooling jacket 40 via a duct.
- the scroll compressor 20 is arranged above the sirocco fan 30 and the cooling jacket 40 is arranged to at least cover a top surface of a compressor housing 21 of the scroll compressor 20 .
- the cooling jacket 40 comprises a discharge opening 42 for discharging the airflow a to a direction opposite at a connection part with a duct 44 .
- the scroll compressor 20 comprises an orbiting scroll 22 a formed integrally with a spiral lap 22 a , and a fixed scroll 24 formed integrally with a spiral lap 24 a .
- the spiral laps 22 a and 24 a form a compression chamber c, and the compressed air having been compressed in the compression chamber c is discharged from a discharge port 26 arranged in a center part of the fixed scroll 24 .
- a drive shaft 33 is connected to the plurality of the blades 38 of the sirocco fan 30 to rotate the blades 38 .
- the drive shaft 33 is arranged linearly in the same straight line with a rotation shaft 28 for turning the orbiting scroll 22 in an orbital motion.
- the drive shaft is coupled with the rotation shaft 28 at a top end of the drive shaft 33 .
- the drive rotation 28 and the drive shaft 33 are connected linearly in the same straight line with an output shaft 62 of the drive motor 60 under the drive shaft 33 .
- a bottom end of the rotation shaft 28 is connected to the output shaft 62 via a rubber coupling 64 .
- a flange plate 66 a is formed on a top of the motor housing 66 of the drive motor 60 integrally with the motor housing 66 . Between the flange plate 66 a and the bottom surface of the mount 50 , a plurality of metallic spacers 68 are arranged to surround the output shaft 62 . The motor housing 66 is positioned and fixed with respect to the mount 50 by means of the spacers 68 . A boxed-shaped control panel 61 is mounted on the motor housing 66 to control the drive motor 60 .
- the output shaft 62 of the drive motor 60 , the drive shaft 33 of the sirocco fan 30 and the rotation shaft of the scroll compressor are directly connected. Therefore, once the drive motor is actuated, the scroll compressor 20 is started and the sirocco fan 30 is started in conjunction or simultaneously as well.
- the scroll compressor 20 compress the air by turning the orbiting scroll 22 and then discharge the compressed air b from the discharge port 26 .
- the blades 38 turns, thereby taking in the air from the air inlet 36 and then discharging the air from the air outlet 31 .
- the air having been discharged from the air outlet 31 reaches the cooling jacket 40 through the duct 44 .
- the air cools the scroll compressor 20 which have been heated by the compression heat.
- the airflow a is discharged from the discharge opening 42 of the cooling jacket 40 .
- the scroll compressor 20 having fewer parts is used as a compressor and the sirocco fan 30 being small and light is used as a blower.
- the compressor 20 , the sirocco fan 30 and the drive motor are arranged linearly in the vertical direction and the drive shaft 33 of the sirocco fan 30 , the rotation shaft 28 of the scroll compressor 20 , and the output shaft of the drive motor 60 are linearly connected, thereby making the compressor unit a compact unit standing upright.
- the compressor unit 10 is space saving, easy to transfer, and easily meets the layout change of the plant.
- the fan housing 32 of the sirocco fan 30 is fixed to the top surface of the mount 50 and the drive shaft 33 of the sirocco fan and the output shaft 62 of the drive motor 60 are connected, and thus the compressor unit 10 can be securely installed on the floor F. Furthermore, the drive motor 60 can be supported without a special supporting structure and thus, the compressor unit 10 can be made even more compact.
- the drive motor 60 actuates the sirocco fan 30 and sends the air to the cooling jacket 40 so as to effectively cool the scroll compressor 20 having been heated by the compression heat.
- the sirocco fan 20 can be actuated by the same drive unit that actuates the scroll compressor 20 , and thus a separate drive unit for actuating the sirocco fan is no needed.
- the scroll compressor 20 is installed at the top of the compressor unit 10 and thus, radiation effect of the scroll compressor 20 can be enhanced.
- the sirocco fan 30 is installed between the scroll compressor 20 and the drive motor 60 so as to reduce the effect of the compression heat, to which the drive motor 60 is subjected to, maintaining the performance of the drive motor 60 .
- the drive shaft 33 of the sirocco fan 30 and the output shaft 62 of the drive motor 60 are connected via the rubber coupling 64 .
- the dimension error generated in the process of manufacturing the drive shaft 33 and the output shaft 62 can be absorbed and the vibration is transmitted from the rotation shaft 28 of the scroll compressor 20 to the drive shaft 33 of the sirocco fan 30 .
- the vibration is absorbed before being transmitted to the output shaft 62 of the drive motor 60 , thereby reducing the vibration of the drive motor 60 .
- a compressor unit which comprises a cooling means for removing compression heat and is compact without taking too much installation space.
- the compressor unit can be a convenient supply source of compressed air, which can be moved and rearranged without restriction to meet layout change at the plant.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Rotary Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
To provide a motor-directly connected compressor unit which is equipped with a cooling means for suppressing the heating of the compressor and is easy to transfer without upsizing the compressor unit in size or weight, the compressor unit is configured such that a sirocco fan 30 is arranged between a scroll compressor 20 and a drive motor 60 located under the sirocco fan 30; an output shaft 62 of the drive motor 60, a drive shaft 33 of the sirocco fan 30 and a rotation shaft 28 of the scroll compressor 20 are linearly connected in the same straight line; a housing 32 of the sirocco fan 30 is fixed on a mount 50 which is supported on legs 54 via anti-vibration rubber pads 52; a cooling jacket is arranged to cover a top of a housing 21 of the scroll compressor 20; and an air outlet 31 arranged in the housing 32 of the sirocco fan 30 is in communication with a cooling jacket 40 via a duct 44 so as to feed air a from the sirocco fan 30 to the cooling jacket 40, thereby cooling the scroll compressor.
Description
- 1. Field of the Invention
- The present invention relates to a transportable motor-directly connected compressor unit in which a compressor is directly connected to a motor, to which a cooling mechanism of a compressor can be annexed without making the compressor increase in size or weight.
- 2. Description of the Related Art
- At a manufacturing plant, a compressor room housing a compressor is provided in a remote place from a manufacturing line to supply compressed air to be used in the manufacturing line at the plant. And a compressed air supply pipe is installed between the compressor room and each manufacturing floor to supply the compressed air from the compressor arranged in the compressor room to a manufacturing floor needing the compressed air. Not only it is expensive to install the compressed air supply pipes throughout the plant but also it is inconvenient to remove and reinstall the supply pipes in different places when the layout of the manufacturing floor is modified.
- In contrast, there is a transportable compressor unit in which a compressor and a motor are integrated. The transportable compressor unit can be installed near the manufacturing floor in need. As a result, the compressed air supply pipes are eliminated and the compressor unit can easily accommodate the layout change of the manufacturing floor, thereby solving the above issue.
- In recent years, in contrast to a line-production method, which is suitable for high-volume production, a cell-production method suitable for a high-mix low-volume production which requires fewer workers to assembly products is becoming popular. The transportable compressor unit is suitable for the cell-production line as well.
- Patent Document 1 discloses a compressor unit integrating a compressor and a drive motor. According to Patent Document 1, the compressor unit is constructed so that the compressor and the drive motor can be easily separated for assembling or maintenance. The compressor unit is a vertical unit having a screw compressor under the compressor unit and a drive motor on top of the compressor unit. The screw compressor and the drive motor are coupled via a coupling casing and a rotor shaft of the screw compressor and a motor shaft of the drive motor are detachably connected via a shaft coupling which is insertable, and the coupling casing is supported on a mount of a flange by vibration-proof installation.
- The compressor unit disclosed in Patent Document 1 is the vertical unit to save the installation space and the coupling casing is mounted on the mount via an anti-vibration member to suppress the vibration from the compressor.
- [PATENT DOCUMENT 1] JP6-193573A
- It is necessary to provide a cooling means for removing compression heat from the compressor. Particularly, in a compression unit in which the compressor is directly connected to the drive motor, the drive motor is exposed to the compression heat. The performance of the compressor largely depends on removing of the compression heat.
- However, the compressor unit disclosed in Patent Document 1 is not equipped with a cooling means and thus, does not take measure against the issue. Further, in the compressor unit of Patent Document 1, the compressor is arranged below the mount that is disposed horizontally, and thus the compression heat tends to be retained there, thereby promoting the area to be heated.
- However, providing a cooling means in the compression unit means a larger compressor unit, or a heavier compressor unit, which makes the transportation thereof inconvenient and expensive.
- In view of the problems above, an object of the present invention is to realize a motor-directly connected compressor unit, which is equipped with a cooling means for preventing the compressor from being heated, and is easy to transfer without upsizing the compressor unit in size or weight.
- To solve the above issue, the present invention proposes a motor-directly connected compressor unit in which a compressor is directly connected to a motor, comprising: a compressor having a rotation shaft; a drive motor arranged below the compressor and having an output shaft that is connected to the rotation shaft of the compressor; an anti-vibration mechanism via which the compressor and the drive motor being supported on a mount; a blower arranged between the compressor and the drive motor and having a drive shaft that is connected to the rotation shaft of the compressor at one end and to the output shaft of the drive motor at the other end; a cooling jacket arranged to at least partially cover a housing of the compressor; and a duct connected to an outlet of a housing of the blower at one end and to the cooling jacket at the other end so as to supply air discharged from the outlet of the housing of the blower to the cooling jacket.
- The compressor unit of the present invention is equipped with a cooling means of above structure including the blower to suppress the heating of the compressor. Further, the blower is installed between the compressor and the drive motor and thus the drive motor is kept away from the compression heat generated in the compressor. As a result, the drive motor is insusceptible to the effect of the compression heat. Furthermore, the rotation shaft of the compressor, the drive shaft of the blower and the output shaft of the drive motor are disposed in a linear manner and thus, the compressor unit can be made compact in the vertical direction. Moreover, the compressor is installed on the top of the compressor unit so as to promote the heat release effect of the heat dissipation from the compressor, thereby improving the cooling effect of the compressor.
- In the compressor unit of the present invention, it is preferable that the housing of the blower is fixed on the mount, and the drive shaft of the blower is connected to the output shaft of the drive motor via an elastic coupling. By this, the compressor unit is fixed to the mount via the blower housing which is installed between the compressor and the drive motor, and thus the compressor unit can be installed securely on the floor.
- Further, the drive shaft of the blower and the output shaft of the drive motor are connected via the elastic coupling. By this, the dimension error generated in the process of manufacturing the drive shaft and the output shaft can be absorbed and the vibration is transmitted from the rotation shaft of the scroll compressor to the drive shaft of the blower. Then the vibration is absorbed before being transmitted to the output shaft of the drive motor, thereby reducing the vibration of the drive motor.
- In the compressor unit of the present invention, it is also preferable that the blower includes a sirocco fan whose housing has a circular cross-sectional shape and which has an air inlet arranged in a central part of the housing and an air outlet arranged in a radially-outer part of the housing, the air inlet of the sirocco fan surrounding the drive shaft.
- In this manner, the sirocco fan being small and light is used so that the compressor unit does not get bigger in size or weight. Further, the air inlet is arranged in the center part of the housing and the air outlet is arranged in the radially-outer part of the housing so that the air discharged in the radial direction of the housing by centrifugal force of the blades can be introduced to the duct directly. By this, the flections of the airflow are reduced and the pressure loss of the airflow is reduced as well. As a result, it is possible to maintain the amount of the cooling air and also to reduce the input of the sirocco fan.
- In the compressor unit of the present invention, it is preferable that the compressor includes a scroll compressor in which an orbiting scroll formed integrally with a spiral lap is orbited by the rotation shaft of the compressor, the rotation shaft of the compressor and the drive shaft of the blower are linearly arranged in series, and the cooling jacket is arranged such as to cover a top surface of the compressor housing.
- In this manner, the scroll compressor having fewer parts is used so that the compressor unit does not get bigger in size or weight. The duct for the cooling air is arranged to cover the outside of the fixed or orbiting scroll, thereby making the installation of the duct easier.
- According to the compressor unit of the present invention, the motor-directly connected compressor unit in which a compressor is directly connected to a motor, comprises: a compressor having a rotation shaft; a drive motor arranged below the compressor and having an output shaft that is connected to the rotation shaft of the compressor; an anti-vibration mechanism via which the compressor and the drive motor being supported on a mount; a blower arranged between the compressor and the drive motor and having a drive shaft that is connected to the rotation shaft of the compressor at one end and to the output shaft of the drive motor at the other end; a cooling jacket arranged to at least partially cover a housing of the compressor; and a duct connected to an outlet of a housing of the blower at one end and to the cooling jacket at the other end so as to supply air discharged from the outlet of the housing of the blower to the cooling jacket. As a result, the heating of the compressor unit is suppressed and the upsizing of the compressor unit in size or weight is not required. Therefore, it is easier to transport the compressor unit and to meet the layout change of the plant.
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FIG. 1A perspective view of a compressor unit of one preferred embodiment, to which the present invention is applied. -
FIG. 2 A perspective view of the compressor unit from a different angle fromFIG. 1 . -
FIG. 3 A perspective view of the compressor unit from another different angle fromFIG. 1 andFIG. 2 . -
FIG. 4 A flat view of the compressor unit. -
FIG. 5 A sectional view of the compressor unit taken along the line A-A ofFIG. 4 . - A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. It is intended, however, that unless particularly specified, dimensions, materials, shape, its relative positions and the like shall be interpreted as illustrative only and not limitative of the scope of the present.
- On preferred embodiment of a compressor unit to which the present invention is applied, is explained in reference to
FIG. 1 toFIG. 5 . InFIG. 1 toFIG. 3 , acompressor unit 10 comprises ascroll compressor 20 arranged above thecompressor unit 10, asirocco fan 30 arranged under thescroll compressor 20, acooling jacket 40 for cooling thescroll compressor 20, amount 50 for supporting thecompressor unit 10, and adrive motor 60 arranged below under themount 50. - The
mount 50 is formed flat and hasanti-vibration rubber pads 52 adhered on the bottom surface thereof at four corners thereof. There are fourlegs 54 installed upright on the floor. Themount 50 is installed securely on the fourlegs 54 via theanti-vibration pads 52. In this manner, the vibration of thescroll compressor 20 is kept from being transmitted to the floor F. Thevibration pads 52 and thelegs 54 are illustrated only inFIG. 1 . - A
housing 32 for thesirocco fan 30 is fixed to a top surface of the mount viabolts 34. The fan housing is in a shape of a doughnut and has an air inlet arranged in a center part of the housing and houses a plurality ofblades 38 disposed circularly. Anair outlet 31 is arranged in a radially-outer part of thehousing 32. Theair outlet 31 is in communication with the coolingjacket 40 via a duct. Thescroll compressor 20 is arranged above thesirocco fan 30 and the coolingjacket 40 is arranged to at least cover a top surface of acompressor housing 21 of thescroll compressor 20. The coolingjacket 40 comprises adischarge opening 42 for discharging the airflow a to a direction opposite at a connection part with aduct 44. - As shown in
FIG. 5 , thescroll compressor 20 comprises anorbiting scroll 22 a formed integrally with aspiral lap 22 a, and a fixedscroll 24 formed integrally with aspiral lap 24 a. Thespiral laps discharge port 26 arranged in a center part of the fixedscroll 24. - A
drive shaft 33 is connected to the plurality of theblades 38 of thesirocco fan 30 to rotate theblades 38. Thedrive shaft 33 is arranged linearly in the same straight line with arotation shaft 28 for turning the orbitingscroll 22 in an orbital motion. The drive shaft is coupled with therotation shaft 28 at a top end of thedrive shaft 33. Further, thedrive rotation 28 and thedrive shaft 33 are connected linearly in the same straight line with anoutput shaft 62 of thedrive motor 60 under thedrive shaft 33. A bottom end of therotation shaft 28 is connected to theoutput shaft 62 via arubber coupling 64. - A
flange plate 66 a is formed on a top of themotor housing 66 of thedrive motor 60 integrally with themotor housing 66. Between theflange plate 66 a and the bottom surface of themount 50, a plurality ofmetallic spacers 68 are arranged to surround theoutput shaft 62. Themotor housing 66 is positioned and fixed with respect to themount 50 by means of thespacers 68. A boxed-shapedcontrol panel 61 is mounted on themotor housing 66 to control thedrive motor 60. - With the above structure, the
output shaft 62 of thedrive motor 60, thedrive shaft 33 of thesirocco fan 30 and the rotation shaft of the scroll compressor are directly connected. Therefore, once the drive motor is actuated, thescroll compressor 20 is started and thesirocco fan 30 is started in conjunction or simultaneously as well. Thescroll compressor 20 compress the air by turning the orbitingscroll 22 and then discharge the compressed air b from thedischarge port 26. - Meanwhile, once the
sirocco fan 30 is actuated, theblades 38 turns, thereby taking in the air from theair inlet 36 and then discharging the air from theair outlet 31. The air having been discharged from theair outlet 31 reaches the coolingjacket 40 through theduct 44. Then, the air cools thescroll compressor 20 which have been heated by the compression heat. After cooling the compressor, the airflow a is discharged from the discharge opening 42 of the coolingjacket 40. - According to the preferred embodiment, the
scroll compressor 20 having fewer parts is used as a compressor and thesirocco fan 30 being small and light is used as a blower. Thecompressor 20, thesirocco fan 30 and the drive motor are arranged linearly in the vertical direction and thedrive shaft 33 of thesirocco fan 30, therotation shaft 28 of thescroll compressor 20, and the output shaft of thedrive motor 60 are linearly connected, thereby making the compressor unit a compact unit standing upright. As a result, thecompressor unit 10 is space saving, easy to transfer, and easily meets the layout change of the plant. - Further, the
fan housing 32 of thesirocco fan 30 is fixed to the top surface of themount 50 and thedrive shaft 33 of the sirocco fan and theoutput shaft 62 of thedrive motor 60 are connected, and thus thecompressor unit 10 can be securely installed on the floor F. Furthermore, thedrive motor 60 can be supported without a special supporting structure and thus, thecompressor unit 10 can be made even more compact. - The
drive motor 60 actuates thesirocco fan 30 and sends the air to the coolingjacket 40 so as to effectively cool thescroll compressor 20 having been heated by the compression heat. Thesirocco fan 20 can be actuated by the same drive unit that actuates thescroll compressor 20, and thus a separate drive unit for actuating the sirocco fan is no needed. Further, thescroll compressor 20 is installed at the top of thecompressor unit 10 and thus, radiation effect of thescroll compressor 20 can be enhanced. Furthermore, thesirocco fan 30 is installed between thescroll compressor 20 and thedrive motor 60 so as to reduce the effect of the compression heat, to which thedrive motor 60 is subjected to, maintaining the performance of thedrive motor 60. - The
drive shaft 33 of thesirocco fan 30 and theoutput shaft 62 of thedrive motor 60 are connected via therubber coupling 64. By this, the dimension error generated in the process of manufacturing thedrive shaft 33 and theoutput shaft 62 can be absorbed and the vibration is transmitted from therotation shaft 28 of thescroll compressor 20 to thedrive shaft 33 of thesirocco fan 30. Then the vibration is absorbed before being transmitted to theoutput shaft 62 of thedrive motor 60, thereby reducing the vibration of thedrive motor 60. - According to the present invention, it is possible to realize a compressor unit, which comprises a cooling means for removing compression heat and is compact without taking too much installation space. The compressor unit can be a convenient supply source of compressed air, which can be moved and rearranged without restriction to meet layout change at the plant.
Claims (7)
1. A motor-directly connected compressor unit in which a compressor is directly connected to a motor, comprising:
a compressor having a rotation shaft;
a drive motor arranged below the compressor and having an output shaft that is connected to the rotation shaft of the compressor;
an anti-vibration mechanism via which the compressor and the drive motor being supported on a mount;
a blower arranged between the compressor and the drive motor and having a drive shaft that is connected to the rotation shaft of the compressor at one end and to the output shaft of the drive motor at the other end;
a cooling jacket arranged to at least partially cover a housing of the compressor; and
a duct connected to an outlet of a housing of the blower at one end and to the cooling jacket at the other end so as to supply air discharged from the outlet of the housing of the blower to the cooling jacket.
2. The motor-directly connected compressor unit according to claim 1 , wherein the housing of the blower is fixed on the mount, and the drive shaft of the blower is connected to the output shaft of the drive motor via an elastic coupling.
3. The motor-directly connected compressor unit according to claim 1 , wherein the blower includes a sirocco fan whose housing has a circular cross-sectional shape and which has an air inlet arranged in a central part of the housing and an air outlet arranged in a radially-outer part of the housing, the air inlet of the sirocco fan surrounding the drive shaft.
4. The motor-directly connected compressor unit according to claim 1 , wherein the compressor includes a scroll compressor in which an orbiting scroll formed integrally with a spiral lap is orbited by the rotation shaft of the compressor, the rotation shaft of the compressor and the drive shaft of the blower are linearly arranged in series, and the cooling jacket is arranged such as to cover a top surface of the compressor housing.
5. The motor-directly connected compressor unit according to claim 2 , wherein the blower includes a sirocco fan whose housing has a circular cross-sectional shape and which has an air inlet arranged in a central part of the housing and an air outlet arranged in a radially-outer part of the housing, the air inlet of the sirocco fan surrounding the drive shaft.
6. The motor-directly connected compressor unit according to claim 2 , wherein the compressor includes a scroll compressor in which an orbiting scroll formed integrally with a spiral lap is orbited by the rotation shaft of the compressor, the rotation shaft of the compressor and the drive shaft of the blower are linearly arranged in series, and the cooling jacket is arranged such as to cover a top surface of the compressor housing.
7. The motor-directly connected compressor unit according to claim 3 , wherein the compressor includes a scroll compressor in which an orbiting scroll formed integrally with a spiral lap is orbited by the rotation shaft of the compressor, the rotation shaft of the compressor and the drive shaft of the blower are linearly arranged in series, and the cooling jacket is arranged such as to cover a top surface of the compressor housing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009231035A JP2011080366A (en) | 2009-10-02 | 2009-10-02 | Motor-directly connected compressor unit |
JPJP2009-231035 | 2009-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110081262A1 true US20110081262A1 (en) | 2011-04-07 |
Family
ID=43823326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/889,041 Abandoned US20110081262A1 (en) | 2009-10-02 | 2010-09-23 | Motor-directly connected compressor unit |
Country Status (3)
Country | Link |
---|---|
US (1) | US20110081262A1 (en) |
JP (1) | JP2011080366A (en) |
KR (1) | KR20110036676A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10137909B2 (en) | 2014-05-15 | 2018-11-27 | Nabtesco Corporation | Air compressor unit for vehicle |
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Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
Publication number | Publication date |
---|---|
KR20110036676A (en) | 2011-04-08 |
JP2011080366A (en) | 2011-04-21 |
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Legal Events
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AS | Assignment |
Owner name: ANEST IWATA CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:INOUE, HIROSHI;SATO, TORU;SHIRATORI, YOHEI;REEL/FRAME:025160/0508 Effective date: 20101019 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |