JP5544529B2 - Package type rotary pump unit - Google Patents

Description

The present invention relates to a rotary pump, a drive device that drives the rotary pump, a package that houses them, and an air that is disposed on the top of the package and sucks air from below into the package to discharge it outside. The present invention relates to a soundproofing and cooling structure for a package type rotary pump unit including a cooling fan for cooling the inside of a package as a component.

  Conventionally, according to the present applicant, a pneumatic device that generates negative or positive air pressure, such as a vacuum pump or a blower, a storage box that can store a plurality of pneumatic devices and is soundproofed by storing them in a closed space, and a pneumatic pressure A pneumatic device station comprising a blower for generating a cooling air flow that flows in one direction from the lower side to the upper side in the storage box so as to cool the storage box heated by the device, and storage of the pneumatic device A box (see Patent Document 1) has been proposed.

According to this, a plurality of pneumatic devices can be housed centrally and soundproofed, and can be suitably cooled and managed centrally.
In this pneumatic equipment station, proposals have been made mainly on soundproofing and cooling structures for housing a large number of pneumatic equipment, but more effective soundproofing and cooling structures for package-type rotary pump units in a more compact form. No proposal has been made.

JP 2007-127114 A (first page)

The problem to be solved with respect to the package type rotary pump unit is that there has been no proposal for a more effective soundproofing and cooling structure in the package type rotary pump unit in a compact form than the pneumatic device station. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a package type rotary pump unit capable of obtaining more effective soundproofing and cooling effects.

The present invention has the following configuration in order to achieve the above object.
According to one form of the package type rotary pump unit according to the present invention, the rotary pump, the electric motor that drives the rotary pump, the package that forms the storage space for storing them, and the cooling air for the storage space. The cooling fan is arranged in the upper part of the package so that air flows from the bottom to the top, and cools the inside of the package by sucking cooling air into the package from the intake port at the bottom of the package and discharging it outside. A rotary pump unit of a package type having the above components as components, wherein the rotary pump is connected in series in the horizontal direction via the electric motor and the coupling, and is assembled in the horizontal direction which is the connecting direction. And the package stores the rotary pump and the electric motor in such a manner that the connecting direction thereof is the front-rear direction. Provided long depth in the longitudinal direction as compared to the direction, the electric motor, said than rotary pump is accommodated is disposed on the front side of the package, the wall portion of the front surface of the package is provided in the double structure A power distribution board is fixed inside the front wall portion, and the front wall portion communicates with an air inlet at a lower portion of the package so that the cooling air is introduced into the wall portion. In addition, an upper communication port that communicates with the upper side of the storage space is provided so that the cooling air is vented from below to above inside the wall portion and is sucked into the cooling fan.

  Further, according to one aspect of the package-type rotary pump unit according to the present invention, a plurality of stages of mounting are provided so that a plurality of the rotary pumps connected to the electric motor can be stored in a stacked state in the vertical direction. It can be characterized in that a shelf is provided.

  Moreover, according to one form of the package type rotary pump unit which concerns on this invention, the said cooling fan is distribute | arranged to the rear part side of the said package rather than the said electric motor, It can be characterized by the above-mentioned.

  Moreover, according to one form of the package-type rotary pump unit which concerns on this invention, the left-and-right side wall part of the said package can be provided in the double structure.

The package-type rotary pump unit according to the present invention has a particularly advantageous effect that a more effective soundproofing and cooling effect can be obtained.

It is sectional drawing seen from the front side which shows the form example of the package type rotary pump unit which concerns on this invention. It is sectional drawing seen from the side surface of the example of FIG. It is a perspective view of the state which removed one side wall part of the package concerning the example of a form of FIG. It is the perspective view seen through in order to demonstrate the inside of the example of a form of FIG. It is a perspective view which shows the detail of the rotary pump with which the electric motor concerning the form example of FIG. 1 was mounted | worn.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a package type rotary pump unit according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 5).
The package-type rotary pump unit according to the present invention includes a rotary pump 10, a drive device (for example, an electric motor 11) that drives the rotary pump 10, a package 20 that houses them, and an upper portion of the package 20. Then, the cooling fan 14 that cools so as to suppress the temperature rise inside the package by sucking the air inside the package from below and discharging it to the outside is a constituent element. The cooling fan 14 is located above the rotary pump 10 and can ventilate the cooling air heated by taking heat from the surfaces of the rotary pump 10 and the electric motor 11.

  Examples of the rotary pump 10 include pneumatic devices such as a vacuum pump and a blower driven by an electric motor 11. Further, examples of the vacuum pump include a vane pump, a claw pump that is a rotor non-contact type pump, a screw pump, and the like.

Reference numeral 15 denotes a pump coaxial fan. As shown in FIG. 2, a centrifugal fan type impeller 15 a which is coaxially mounted on the rotary shaft of the rotary pump 10 and arranged to cool the rotary pump 10 and the impeller thereof. A blower casing 15b (see FIG. 5 and the like) is provided as a constituent element so as to cover 15a and guide the exhaust to the side.
In this embodiment, the rotary pump 10 is connected in series via an electric motor 11 as a driving device and a coupling 13 (see FIG. 5), and the impeller of the pump coaxial fan 15 is provided in the coupling 13. 15a is attached.

Due to the intake action of the pump coaxial fan 15, the wind sucked in the axial direction is generated so as to cool the surface of the rotary pump 10. Further, the exhaust air from the pump coaxial fan 15 is discharged to the side (direction perpendicular to the axial direction) by the action of the centrifugal fan (see the hatched arrow in FIG. 1 and the arrow in FIG. 5).
According to the pump coaxial fan 15, an air cooling mechanism that can cool the rotary pump 10 with the rotational drive of the rotary pump 10 by the electric motor 11 can be rationally configured.

  In the present embodiment, the rotary pump 10 is connected in series in the horizontal direction via the electric motor 11 and the coupling 13, so that the rotary pump 10 is provided in an assembly form that is long in the horizontal direction that is the connection direction. And since the package 20 accommodates the rotary pump 10 and the electric motor 11 so that the connecting direction thereof is the front-rear direction, the depth in the front-rear direction is longer than that in the left-right direction. The rotary pump 10 is disposed and stored on the front side of the package 20.

  According to this, compared with the electric motor 11, the rotary pump 10 which is a generation source of a louder noise can be arrange | positioned in the back | inner side. Therefore, it is possible to increase the distance between the worker and the generation source of the larger noise (rotary pump 10). Thus, the influence of the noise on the operator can be reduced by disposing a larger noise source farther away.

  Furthermore, in this embodiment, a main body portion of the rotary pump 10 and a silencer portion 12 that silences air sound discharged from the main body portion of the rotary pump 10 are connected in series, and the electric motor 11 and the rotary pump 10 are connected. The body part and the silencer part 12 are arranged in series in this order. Here, the main body portion of the rotary pump 10 of the present embodiment includes a gear box portion including a cylinder portion and an oil bath in which a rotor rotates, as constituent elements. Further, the rotary pump 10 of this embodiment is obtained by adding components such as the silencer 12 to the main body.

By arranging the components in this manner, the components as the heat source and the noise source are arranged in series, and the heat and noise can be dispersed. Therefore, it becomes a form which is easy to perform cooling and soundproofing, and can improve a cooling effect and a soundproofing effect.
Moreover, since the silencer part 12 which is one of the generation sources of a big noise can be arrange | positioned in the back | inner side as a soundproof effect, the influence of the noise to an operator can be reduced.

Next, an example of the form of the package 20 will be described.
Reference numeral 21 denotes a base portion, which is provided with a cooling air intake port 21a at the bottom of the package 20.
In this embodiment, the outer dimension of the base portion 21 is provided slightly smaller than the upper body portion, and the base portion 21 is a narrowed stepped portion. A frame portion 21b having an outer dimension equivalent to that of the body portion is provided at the lowermost portion of the base portion 21. An air inlet 21 a is provided on the side surface of the base that is the side wall of the base portion 21. An intake filter 21c is attached to the intake port 21a.

  According to this, even if the rectangular and box-shaped package 20 as shown in the figure is arranged so as to be in contact with the wall of the building, the air inlet 21a is not blocked, and the outside air is supplied from the air inlet 21a on the side of the base. The cooling air (see the white arrows in FIGS. 1 and 2) can be reliably sucked. Moreover, since the dust in the cooling air is filtered by the intake filter 21c, the inside of the package 20 can be prevented from being contaminated as much as possible.

Reference numeral 22 denotes a mounting shelf, which is provided on the upper side of the base 21 and on which the rotary pump 10 and the electric motor 11 are mounted, and for cooling air (see white arrows in FIGS. 1 and 2) of the package 20. An opening 22a is provided so that the storage spaces 20a and 20b can be ventilated.
In the present embodiment, a plurality of mounting shelves 22 are provided so that a plurality of rotary pumps 10 can be stored in a state where they are stacked in the vertical direction (vertical direction). In this embodiment, it is provided in two stages. Each mounting shelf 22 is provided with an opening 22a.

  According to this, the cooling air can pass through from the bottom through the opening 22a. The air flow from the bottom to the top is in the same direction as the rising air flow of the air warmed by the rotary pump 10, and the ventilation resistance can be kept low, and the cooling effect can be improved.

  Furthermore, the package 20 of this embodiment is provided with a plurality of stages of mounting shelves 22 so that a plurality of rotary pumps 10 to which the electric motor 11 is coupled can be stored in a state of being stacked one by one in the vertical direction (vertical direction). It has been. According to this, one rotary pump 10 is stored in each stage, and the depth of the package 20 is longer than the left-right direction (lateral direction). A larger noise source can be arranged on the back side, and the soundproofing effect can be improved.

  The position of the opening 22a is the effect of cooling air on the outer surface of the main body (the cylindrical casing in which the rotor is built and the casing of the gear box) that is the most desired portion of the rotary pump 10 to be cooled. So as to be able to pass through the main body part so as to be arranged in series in the longitudinal direction. According to this, about the main-body part of the rotary pump 10 which needs the most cooling, cooling air can flow easily with low ventilation resistance, and can be cooled efficiently.

  In the present embodiment, the lower mounting shelf 22 has an opening 22a in the lower portion of the electric motor 11, but the upper mounting shelf 22 has the lower side of the electric motor 11. There is no opening 22a in the part. According to this configuration, more cooling air can be sent to the upper rotary pump 10 at a lower temperature, and the upper rotary pump 10 can be effectively cooled.

  Reference numeral 30 denotes an air passage in one side wall portion, and one side wall portion 23 of the package 20 is sucked by the cooling fan 14 so that the exhaust air of the pump coaxial fan 15 bypasses at least a part of the storage spaces 20a and 20b. However, the communication port 30a into which the exhaust of the pump coaxial fan 15 is introduced is formed. Therefore, the air passage 30 on the one side wall is used as an exhaust duct.

  The air passage 30 in one side wall portion of the present embodiment opens to the upper portion of the upper storage space 20b through the upper communication port 30b provided in the upper portion of the inner wall 23a of the one side wall portion 23. Accordingly, the exhaust gas introduced from the communication port 30a flows through the inside of the air passage 30 and the upper communication port 30b to the upper part of the upper storage space 20b, and is sucked by the cooling fan 14 and externally (upward in this embodiment). Is released. Further, in this embodiment, the rotary pump 10 is housed in two stages, and accordingly, the communication ports 30a are provided at two places above and below. According to this, the exhaust by the upper and lower pump coaxial fans 15 and 15 not only passes through the lower rotary pump 10 and its storage space 20a but also bypasses most of the upper rotary pump 10 and its storage space 20b. Will be discharged.

  According to this, the flow of cooling air sucked from the outside and the flow of air receiving heat generated from the outer surface of the rotary pump 10 are separated as much as possible, and the main route passing through the storage spaces 20a and 20b, The air can be exhausted by being sucked by the cooling fan 14 through a bypass route passing through the ventilation path 30 in the side wall portion. For this reason, more efficient cooling can be performed. That is, since the cooling air of the main route is blown so as to cool the rotary pump 10 without being mixed with other warm air as much as possible, the cooling effect can be improved.

  At this time, the air flow rate of the cooling fan 14 is set to be larger than the air flow rates of the pump coaxial fan 15 and the electric motor attached fan. According to this, the air flow for cooling can be made to flow smoothly, and the cooling effect can be enhanced.

  In addition, regarding the air volume of the cooling air for cooling each rotary pump 10, the distribution of the main route and the detour route described above may be set as appropriate. Usually, the air volume of the main route is set larger than that of the detour route. Further, the two rotary pumps 10 of the present embodiment can control the respective rotational speeds by inverter control. For this reason, the distribution of the air volume may be adjustable according to the control of the rotational speed.

  Furthermore, in this embodiment, the arrangement position of the cooling fan provided above each rotary pump 10 is set to be directly above the main body of the rotary pump 10 which is the maximum heat generating part of the rotary pump unit. On the other hand, the pump coaxial fan 15 and the electric motor-attached fan are arranged at positions away from the cooling line of the pump maximum heat generating portion (the main body portion of the rotary pump 10). Without disturbing the flow of the cooling line of the main route, a new cold air flow can be generated by the pump coaxial fan 15 and the fan attached to the electric motor, and the cooling efficiency can be improved.

  31 is an air passage in the other side wall, and cooling air (arrow) bypasses at least a part of the lower storage space 20a among the storage spaces 20a and 20b by the plurality of mounting shelves 22 by the cooling fan 14. The other side wall 24 of the package 20 is formed in a double structure so that the air is sucked in, and the cooling air (arrow) from the base 21 is introduced so that the base 21 is cooled. A lower communication port 31a communicating with the upper storage space 20b and an upper communication port 31b communicating with the upper storage space 20b are formed. The upper communication port 31b of the present embodiment is provided to open to the inner wall 24a of the other side wall portion 24. Accordingly, the air passage 31 on the other side wall is an intake duct for cooling air applied to the upper rotary pump 10.

According to this, a diversion route for sending fresh cooling air to the upper rotary pump 10 is formed. By providing such a diverting REIT, the cooling air can be efficiently guided to the upper rotary pump 10. That is, the upper rotary pump 10 is structured to be able to directly apply the cooling air to the upper rotary pump 10 without being affected by the heat generated by the lower rotary pump 10 as much as possible, thereby improving the cooling efficiency. it can.
Since the cooling efficiency can be improved in this way, the cooling fan 14 can be downsized and the package 20 can be downsized. In addition, in order to optimize the flow rate of the cooling air and increase the cooling efficiency, the storage spaces 20a and 20b may be space spaces having an appropriate size.

  Further, the rotary pump 10 of this embodiment is a vacuum pump, and the vacuum pump exhaust (see the hatched arrow in FIG. 1) is exhausted to the ventilation passage 30 on one side wall. The pump is provided with an exhaust pipe line 12a for guiding the exhaust gas to the ventilation path 30, and an exhaust pipe communication port 30c through which the exhaust of the vacuum pump is introduced is provided on one side wall portion 23. Accordingly, the exhaust of the vacuum pump that becomes high temperature merges with the exhaust of the pump coaxial fan 15, passes through the air passage 30, and is discharged by the cooling fan 14.

According to this, since the cooling air can be blown to cool the rotary pump 10 (the vacuum pump in this embodiment) without mixing with the exhaust of the vacuum pump, the cooling effect can be improved.
In addition, 10a is an intake port of the vacuum pump, 10b is an intake filter unit of the vacuum pump, and 10c is an intake pipe of the vacuum pump. The suction pipe 10c of the vacuum pump is connected to a cylindrical casing in which the rotor of the vacuum pump is built.

  The switchboard 40 is fixed to the interior 32 of a part of the wall part (front wall part 25) provided in a double structure, and the inner wall 25a of a part of the wall part (front wall part 25) In order to vent the cooling fan 14 through the lower communication port 32a for communicating from the base portion 21 and the upper storage space 20b so that the cooling air from the base portion 21 is introduced into the interior 32 thereof. The upper communication port 32b is formed.

  According to this, a diversion route for sending fresh cooling air to the switchboard 40 is formed, and the cooling air is introduced by the cooling fan 14 into the interior 32 of the front wall 25 where the switchboard 40 is arranged. And ventilate by discharging. Therefore, the switchboard 40 can be suitably cooled. Moreover, according to this structure, the switchboard 40 can be suitably accommodated in the package 20. Reference numeral 41 denotes an operation panel (see FIGS. 3 and 4).

Furthermore, since the switchboard 40 is fixed inside the front wall 25 provided in the double structure of the package 20, the soundproofing effect on the front side can be enhanced. It is considered that the worker usually works on the front side of the package 20, and can improve the work environment appropriately.
In this embodiment, the two rotary pumps 10 and 10 are configured to be inverter-controlled, and the switchboard 40 is an electrical component such as an inverter.

  In this embodiment, the cooling fan 14 that is a noise generation source is disposed on the rear side of the package 20, and the exhaust port 14 a of the cooling fan 14 is also provided on the rear side of the package 20. In terms of the relationship with the electric motor 11, the cooling fan 14 is located on the back side of the electric motor 11. In terms of the relationship with the switchboard 40, the electric motor 11 is disposed on the side close to the switchboard 40. Even with such an arrangement relationship, a configuration that is a larger noise source is provided on the rear side of the package 20 and is located on the far side away from the operator. Therefore, the soundproofing effect can be enhanced and the work environment can be improved appropriately.

  Moreover, the left and right side wall parts 23 and 24 of the package 20 are provided in a double structure by panels, and these panels also serve as a noise shielding material, so that the soundproofing effect can be enhanced. In addition, the double structure using the panel is advantageous in that it does not require a complicated shape, is inexpensive, and can be easily maintained.

  The fan attached to the electric motor is mounted coaxially with the rotating shaft of the electric motor 11 and is built in the motor case, and is provided to cool the electric motor 11 by generating axial wind from the outside to the inside. . According to the electric motor-attached fan, as described above, the cooling air different from the main route is generated, which contributes favorably to enhance the cooling effect.

Each of the cooling air flows described above is finally sucked by the cooling fan 14 and discharged to the outside of the package 20 in a lump so that the inside of the package 20 is ventilated. Yes.
For this reason, the openings for supplying and exhausting cooling air are only the air inlet 21a on the side of the base and the air outlet 14a on the upper surface of the package 20 (top plate 27), and the structure does not leak noise. Furthermore, since the cooling fan 14 is disposed rearward and the wind also escapes from the rear, wind noise can be reduced.

  Further, by providing a guide for guiding the exhaust direction of the cooling fan 14 in a specific direction such as the rear side, or by appropriately providing a partition in the arrangement space of the cooling fan 14, the soundproofing effect can be enhanced. Moreover, since the exhaust of the rotary pump 10 is complicated by its complicated flow path, the soundproofing effect is enhanced.

  Reference numeral 50 denotes a sound absorbing material, which is provided in a state of being laminated on the inner surface of each panel of each of the wall portions 23, 24, 25, and 26. Double side wall portions 23 and 24 are stretched on the respective panels. As this sound-absorbing material 50, a polyurethane or polyethylene foam or glass fiber can be used.

According to the sound absorbing material 50, the operation sound of the rotary pump 10 can be soundproofed, and wind noises passing through the double-structured air passages 30 and 31 can also be absorbed. Moreover, there exists a heat insulation effect and it can prevent that the outer surface of the panel which comprises the wall part of the package 20 becomes high temperature by exhaust_gas | exhaustion.
Furthermore, the noise absorbing material 50 is provided on the bottom plate 28 (inner bottom surface) of the base portion 21, thereby reducing noise from the air inlet 21 a on the side surface of the base due to reflection. Further, a sound absorbing material 50 is provided on the upper portion of the cooling fan 14 (the back surface of the top plate 27) to reduce noise from the exhaust port 14a.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 10 Rotating pump 11 Electric motor 12 Silencer part 12a Exhaust pipe line 13 Coupling 14 Cooling fan 15 Pump coaxial fan 15a Impeller 15b Air blower casing 20 Package 20a Lower storage space 20b Upper storage space 21 Base part 21a Inlet 21c Intake filter 22 Mounting shelf portion 22a Opening portion 23 One side wall portion 23a Inner wall 24 The other side wall portion 24a Inner wall 25 Front wall portion 26 Back wall portion 30 One side wall portion air passage 30a Communication port 30b Upper communication port 30c Exhaust duct communication port 31 Ventilation channel 31a on the other side wall 31a Lower communication port 31b Upper communication port 32 Inside 32a Lower communication port 32b Upper communication port 40 Switchboard 50 Sound absorbing material

Claims (4)

A rotary pump, an electric motor that drives the rotary pump, a package that forms a storage space for storing the rotary pump , and an upper portion of the package so that cooling air is vented from below to above the storage space. A package-type rotary pump unit comprising a cooling fan that cools the inside of the package by sucking cooling air inside the package from the air intake port at the bottom of the package and discharging the air to the outside,
The rotary pump is connected to the electric motor in series in the horizontal direction via a coupling, so that the rotary pump is provided in an assembly form that is long in the horizontal direction, which is a connecting direction, and the package includes the rotary pump and the electric motor. In order that the connecting direction thereof is the front-rear direction, the depth in the front-rear direction is longer than that in the left-right direction, and the electric motor is disposed on the front side of the package rather than the rotary pump. Stored ,
The front wall portion of the package is provided in a double structure, and a distribution board is fixed inside the front wall portion. The cooling air is introduced into the wall portion of the front wall portion. As described above, the air is communicated with the air inlet at the bottom of the package, and the cooling air is communicated with the upper side of the storage space so that the cooling air is vented from the bottom to the top and sucked into the cooling fan. A package-type rotary pump unit comprising an upper communication port .   The package according to claim 1, wherein a plurality of mounting shelves are provided so that a plurality of the rotary pumps connected to the electric motor can be stored in a vertically stacked state. Type rotary pump unit. 3. The package-type rotary pump unit according to claim 1, wherein the cooling fan is arranged on the rear side of the package with respect to the electric motor. The package type rotary pump unit according to any one of claims 1 to 3 , wherein left and right side walls of the package are provided in a double structure.

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