Rotating Machinery

Abstract

To provide a rotary machine device which can suppress noise and vibration.SOLUTION: A pump unit as a rotary machine device comprises: a motor 21 connected with a pump and having a motor casing 21c; an inverter which drives the motor 21; cases 51, 71 which accommodate the inverter, provided at a part of an outer surface of the motor casing 21c and having a radiation fin 51c at the bottom facing the motor casing 21c; and a third elastic body which is provided between the motor casing 21c and the cases 51, 71.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a rotating machine having a control unit. [Background technology]

[0002] A rotating machine device having a rotating machine such as a pump and a motor that drives the rotating machine is known. Such a rotating machine device has a control unit that drives and controls the motor. The control unit has a control board and the like housed in a control box and is attached to the motor.

[0003] For example, there is known an inverter-equipped motor in which a motor frame and a control box are attached by an elastic support member formed of a spring (see, for example, Patent Document 1).

[0004] In addition, in a mechanically and electrically integrated motor device in which the motor and inverter are integrally provided, a technique is known in which insulation material is provided between the motor frame and the inverter case, and / or between the inverter case and the inverter cover (see, for example, Patent Document 2).

[0005] Another known technique is to provide an inverter on the side of a motor connected to a pump, a cooling fan on the end opposite the pump, and a fan cover that guides the air generated by the cooling fan to the inverter. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2008-271730 A [Patent Document 2] Patent No. 6477241 [Patent Document 3] Patent No. 5677010 Summary of the Invention [Problem to be solved by the invention]

[0007] In the rotating machinery described above, noise and vibrations generated by the rotation of the motor are transmitted to the control box of the control unit. The noise and vibrations of the motor transmitted to the control unit may also cause vibrations in the control unit, which may increase the noise generated by the rotating machinery. For this reason, there is a need to prevent the vibrations generated by the motor from being transmitted to the control unit.

[0008] SUMMARY OF THE PRESENT EMBODIMENTS An object of the present invention is to provide a rotating machine capable of suppressing noise and vibration. [Means for solving the problem]

[0009] According to one aspect of the present invention, a rotary machine device includes a motor connected to a rotary machine and having a motor casing, an inverter for driving the motor, a case for accommodating the inverter, the case being provided on a portion of the outer surface of the motor casing and having a heat dissipation fin on a bottom portion facing the motor casing, and a casing elastic body provided between the motor casing and the case. An elastic body for a power line; Equipped with The motor casing and the case each have an opening through which a power line passes, and the power line elastic body is provided between the opening of the motor casing and the opening of the case, has an opening through which the power line is disposed, and has a protrusion that is inserted into the opening of the motor casing. . Effect of the Invention

[0010] According to the present invention, it is possible to provide a rotating machine capable of suppressing noise and vibration. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a top view showing a configuration of a pump device according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a perspective view showing the configuration of a motor and a control unit of the pump device. [Figure 4] FIG. 2 is a perspective view showing the configuration of the motor and a control unit. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7]FIG. [Figure 8] FIG. 4 is a perspective view showing the configuration of a first case and a control board of the control unit. [Figure 9] FIG. 2 is a perspective view showing the configuration of the first case. [Figure 10] FIG. 2 is a top view showing the configuration of the first case. [Figure 11] FIG. 4 is an enlarged top view showing the configuration of the motor and the elastic body. [Figure 12] FIG. 2 is an enlarged top view showing the configuration of the motor. [Figure 13] FIG. 4 is a perspective view showing the configuration of a second case of the control unit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An example of a rotating machine according to an embodiment will be described below with reference to Fig. 1 to Fig. 13. The rotating machine according to this embodiment is a pump device 1, as shown in Fig. 1 and Fig. 2. The rotating machine will be described below as the pump device 1.

[0013] Fig. 1 is a top view showing the configuration of a pump device 1 according to an embodiment of the present invention, and Fig. 2 is a side view showing the configuration of the pump device 1. In this embodiment, in a position in which a control unit 23 of the pump device 1 is located above a motor 21, the control unit 23 is defined as the upper side and the motor 21 is defined as the lower side, and the following description will be given with the upper and lower sides defined.

[0014] Figures 3 and 4 are perspective views showing the configuration of the motor 21 and the control unit 23 of the pump device 1. Figure 5 is a perspective view showing the configuration of the motor 21. Figures 6 and 7 are perspective views showing the configuration of the control unit 23. Figure 8 is a perspective view showing the configuration of a first case 71 and a control board 52 of the control unit 23. Figure 9 is a perspective view showing the configuration of the first case 71, and Figure 10 is a top view showing the configuration of the first case 71.

[0015] Fig. 11 is an enlarged top view showing the configuration of the motor 21 and the second elastic body 92, and Fig. 12 is an enlarged top view showing the configuration of the motor 21. Fig. 13 is a perspective view showing the configuration of the second case 72 of the control unit 23.

[0016] The pump device 1 is an automatic water supply device that supplies water to a supply destination such as a water tank, a faucet, or a shower head installed in a building. For example, the pump device 1 is used in a water supply device. The water supply device is, for example, a so-called direct-connection type water supply device that is connected to a water distribution pipe installed in a water main and boosts the pressure of the water supplied from the water distribution pipe. The water supply device may also be configured to be connected to a water tank or the like and supply water from the water tank at boosted pressure. The water supply device may also be used to boost the supply of industrial water or well water.

[0017] In such a water supply apparatus, for example, a plurality of pump devices 1 are arranged horizontally on a stand, and the pump devices are connected by a piping unit. The water supply apparatus also includes an accumulator and various sensors such as a pressure sensor and a flow rate sensor on the secondary side of the plurality of pump devices 1. As an example of the sensors, in addition to the pressure sensor and the flow rate sensor, for example, a sensor used for driving control of the pump device 1, such as a temperature sensor, a liquid level sensor, a noise sensor, a vibration sensor, etc. Such sensors are appropriately set depending on the specifications of the water supply apparatus in which the pump device 1 is used, the installation location, etc.

[0018] 1 and 2, the pump device 1 includes a motor 21, a pump 22, a control unit 23 including an inverter that drives and controls the motor 21, and an elastic body. The pump device 1 is a rotary mechanical device. In the pump device 1, the pump 22 is connected to the motor 21, and the control unit 23 is fixed to the motor 21. In the pump device 1, the motor 21 and the pump 22 are fixed by fastening members 99 such as bolts, and the control unit 23 is fixed to the motor 21 by fastening members 99 such as screws or bolts via the elastic body.

[0019] The motor 21 is a rotating electric machine (rotating machine) and is, for example, a PM motor that uses permanent magnets.

[0020] The motor 21 is controlled by the control unit 23. As shown in Fig. 3 to Fig. 5, the motor 21 includes a motor shaft 21a and a motor casing 21c having a plurality of motor heat dissipation fins 21b as heat dissipation members on the outer peripheral surface. The motor 21 also includes an external fan 21d at one end in the axial direction, and a fan cover 21e that is fixed to the motor casing 21c via a first elastic body 91 described later and covers the external fan 21d. The motor 21 is connected to the control unit 23 via a power line 21f that is an internal wiring.

[0021] The motor heat dissipation fins 21b are plate-shaped members that stand in the outer circumferential direction from the outer circumferential surface of the motor 21 and extend in the axial direction of the motor shaft 21a. The multiple motor heat dissipation fins 21b are arranged at a predetermined pitch in the circumferential direction on the outer circumferential surface of the motor casing 21c.

[0022] The motor casing 21c is a motor frame formed of a metal material and on which the motor heat dissipation fins 21b are formed. As shown in Figures 5, 11, and 12, the motor casing 21c has an opening 21h in which an opening 21g for arranging the power lines 21f is formed on a part of the outer circumferential surface facing the control unit 23, and a seat 21i that is different from the opening 21h and supports a part of the control unit 23, formed on a part of the outer circumferential surface facing the control unit 23.

[0023] The outer surface of the opening 21h facing the control unit 23 is formed in a flat shape along the axial direction of the motor shaft 21a. As shown in Fig. 12, the opening 21g formed in the opening 21h is formed in a shape larger than the power line 21f, for example, in a long hole shape. A second elastic body 92, which will be described later, is provided in the opening 21h.

[0024] The seat portion 21i is formed, for example, in a planar shape along the axial direction of the motor shaft 21a, and a pair of seats are provided in a direction perpendicular to the axial direction of the motor shaft 21a. That is, the two seats 21i are formed along the axial direction of the motor shaft 21a, and have planar upper surfaces. The upper surfaces of the seats 21i are formed parallel to (in the same plane direction as) the upper surface of the opening 21h. The two seats 21i are provided with a third elastic body 93, which will be described later.

[0025] The external fan 21d is connected to the motor shaft 21a, and rotates to send air to the multiple motor heat dissipation fins 21b. The fan cover 21e is fixed to, for example, the motor casing 21c and the control unit 23. The fan cover 21e has multiple ventilation holes formed, for example, in a portion facing the external fan 21d. The fan cover 21e is fastened to, for example, at least one of the motor casing 21c and the control unit 23, in this embodiment, to a first case 71 of a housing 51 of the motor casing 21c and the control unit 23, described later, via a first elastic body 91 by a fastening member 99 such as a screw.

[0026] Such a motor 21 is on the secondary side in the airflow direction of the external fan 21d, and an air passage is formed between the multiple motor heat dissipation fins 21b along the axial direction.

[0027] The pump 22 is a rotary machine. The pump 22 is connected to the motor 21. The pump 22 is a single-stage or multi-stage pump having one or more impellers. The impeller of the pump 22 is directly connected to the motor shaft 21a of the motor 21, or is connected to a main shaft connected to the motor shaft 21a via a joint or the like. For example, in this embodiment, the impeller is directly fixed to the motor shaft 21a. The pump 22 increases the pressure of the fluid and pumps it to the secondary side by rotating the impeller in conjunction with the rotation of the motor shaft 21a.

[0028] The control unit 23 controls the variable speed drive of the motor 21. As shown in Figures 6 to 8, the control unit 23 includes a housing 51 and one or more control boards 52 housed in the housing 51. The control unit 23 is fixed to the outer periphery of the side surface of the motor 21 and is integrated with the motor 21.

[0029] The housing 51 is a case that houses a control board 52 including an inverter. The housing 51 constitutes a control box that controls the motor. The housing 51 is fixed to a part of the outer surface of the motor casing 21c. As a specific example, the housing 51 is fixed to an upper part of the outer circumferential surface of the motor casing 21c via an elastic body.

[0030] The housing 51 includes, for example, a peripheral wall portion 51a, a cover wall portion 51b, and heat dissipation fins 51c. The housing 51 forms, for example, a substantially rectangular parallelepiped space capable of accommodating the control board 52 therein. The peripheral wall portion 51a is formed, for example, in a rectangular tubular shape having two pairs of opposing side walls. The peripheral wall portion 51a has a cable hole 51e through which a cable connected to the motor 21 and the like is inserted. The cable hole 51e has, for example, a conduit or a cable gland capable of protecting the cable. For example, the cable hole 51e can provide dustproofness and waterproofness to the opening after the cable is placed therein.

[0031] The lid wall portion 51b is a lid or cover that closes an opening at one end of the peripheral wall portion 51a. The lid wall portion 51b is formed of, for example, a non-metallic material. The non-metallic material constituting the lid wall portion 51b is a resin material that has suitable weather resistance and low shielding properties against radio waves. In addition, it is preferable that the non-metallic material has high rigidity. Examples of non-metallic materials having high rigidity and suitable weather resistance include resin materials such as Teflon (registered trademark), acrylic, polycarbonate, and vinyl chloride, but other non-metallic materials may also be used. Other examples of non-metallic materials include olefin-based elastomers as examples of elastomers, and silicone rubber, fluororubber, ethylene propylene rubber, and chlorosulfonated polyethylene rubber as examples of rubber.

[0032] The heat dissipating fins 51c are formed of a metal material. For example, the heat dissipating fins 51c are formed of a metal material with high thermal conductivity, such as aluminum. The heat dissipating fins 51c have a plurality of fins 51d, and are configured as a heat dissipating member for electrical components in the housing 51. The heat dissipating fins 51c are provided, for example, at the other end (the end on the motor 21 side) of the peripheral wall portion 51a. The heat dissipating fins 51c face the motor casing 21c when the housing 51 is fixed to the motor casing 21c. The plurality of fins 51d of the heat dissipating fins 51c are arranged, for example, along the outer peripheral shape of the motor casing 21c.

[0033] The fin 51d is formed in a plate shape. The fins 51d extend along the axial direction of the pump device 1 and a direction perpendicular to the axial direction, and are arranged at a predetermined interval in the direction perpendicular to the axial direction. The fins 51d are arranged so that the tips of the fins 51d in the direction perpendicular to the axial direction toward the center of the motor 21 are aligned with the outer circumferential surface of the motor casing 21c. For example, the fins 51d are formed to have the same or approximately the same length extending toward the motor 21, and are arranged so that the tips are arranged on a virtual curved surface of a predetermined curvature from the outside of the motor casing 21c toward the center. The fins 51d may be shaped so that the length extending to the motor casing 21c from the outside of the motor casing 21c toward the center becomes shorter, so that the tips are aligned with the outer circumferential surface of the motor casing 21c. For example, as shown in FIG. 7, some of the fins 51d may be formed only partially, such as on one end side, in the axial direction according to the shape of the housing 51.

[0034] The heat dissipation fins 51c are disposed opposite the motor heat dissipation fins 21b formed on the outer peripheral surface of the motor 21, and form an air passage extending in the axial direction between the motor 21 and the heat dissipation fins 51c. Therefore, the heat dissipation fins 51c are forcibly air-cooled by the blowing air from the external fan 21d provided on one end side of the motor 21 in the axial direction.

[0035] Such a housing 51 is fixed to the motor 21 via an elastic body, for example, in a position in which multiple fins 51d protrude downward toward the motor 21 between the control unit 23 and the outer peripheral surface of the motor 21 and extend along the axial direction of the motor 21.

[0036] Next, a specific example of such a housing 51 will be described with reference to Figures 5 to 10 and 13. The housing 51 includes, for example, a first case 71 and a second case 72. The first case 71 and the second case 72 are integrally assembled to form the housing 51 having a peripheral wall portion 51a, a cover wall portion 51b, and a plurality of heat dissipation fins 51c, and in which a cable hole 51e is formed.

[0037] The first case 71 forms a part of the housing 51 on the motor 21 side. The first case 71 constitutes a part of the peripheral wall 51a on the motor 21 side, and has heat dissipation fins 51c. The first case 71 also has a cable hole 51e. For example, the first case 71 is made of a metal material with high thermal conductivity, such as aluminum.

[0038] For example, the first case 71 is formed in a box shape with one end open. The heat dissipation fins 51c are integrally formed on the bottom of the first case 71. The bottom of the first case 71 is formed in a curved shape that curves in one direction with a predetermined curvature. In other words, the bottom of the first case 71 is formed in a curved shape that has an apex at the center of one width direction, which is a direction perpendicular to the axial direction of the motor shaft 21a, and extends along the other width direction, which is a direction along the axial direction of the motor shaft 21a. In other words, the first case 71 is curved along the arrangement of the multiple fins 51d. As a specific example, the curved bottom of the first case 71 is shaped along a virtual curved surface that connects the bases or tips of the multiple fins 51d of the heat dissipation fins 51c.

[0039] The first case 71 has a rectangular frame-shaped first flange 71a formed at an open end, a groove 71b provided in the first flange 71a, and a plurality of holes 71c formed in the first flange 71a. The first case 71 also has a plurality of ribs 71d and a seat 71e inside. The first case 71 also has an opening 71g in which an opening 71f for arranging the power lines 21f is formed, a seat 71h that is formed in a part of the outer circumferential surface facing the control unit 23 and is different from the opening 71g and supports a part of the control unit 23, and a screw hole 71i into which a fastening member 99 for fixing the fan cover 21e is screwed.

[0040] The first flange portion 71a abuts against the second case 72. The first flange portion 71a is formed, for example, in the shape of a rectangular frame having one width direction greater than the other width direction.

[0041] The groove portion 71b is provided in the first flange portion 71a, and an elastic body is provided therein. As a specific example, a fourth elastic body 94 (described later) is disposed in the groove portion 71b. The groove portion 71b is a seal groove in which the fourth elastic body 94 is disposed. The groove portion 71b is formed on the inside of a plurality of holes 71c formed in the first flange portion 71a.

[0042] The holes 71c are holes into which fastening members 99, such as bolts or screws, can be inserted to fasten the first flange portion 71a and the second case 72. The holes 71c are provided, for example, at the four corners (square) of the first flange portion 71a.

[0043] The ribs 71d are disposed along the bottom and sides of the first case 71. The ribs 71d extend in a direction perpendicular to the axial direction of the motor shaft 21a. The ribs 71d are provided at least on the central side of the first case 71 in the axial direction of the motor shaft 21a. As a specific example, the ribs 71d are provided in multiple numbers on each end of the bottom of the first case 71 in a direction perpendicular to the axial direction of the motor shaft 21a. In the example shown in FIG. 10, the ribs 71d are provided at six locations on the bottom of the first case 71.

[0044] The seating surface 71e is formed on the bottom of the first case 71 where the heat dissipation fins 51c are provided. The seating surface 71e supports a part of the control board 52 and the electrical components mounted on the control board 52. For example, a plurality of seating surfaces 71e are provided on the bottom of the first case 71 according to the shape of the control board 52 and the shapes and number of the electrical components to be supported. At least one of the plurality of seating surfaces 71e forms a seat with which a heat-generating electrical component (heat generating element) of the electrical components of the control board 52 that constitute the inverter comes into contact.

[0045] The opening 71g is provided in a portion of the first case 71 facing the opening 21h of the motor 21. The outer surface of the opening 71g facing the motor 21 is formed in a flat shape. The opening 71f formed in the opening 71g is formed in a shape larger than the power line 21f, for example, in the same shape as the opening 21g formed in the opening 21h of the motor 21, for example, in an elongated hole shape. A second elastic body 92, which will be described later, is provided in this opening 71g.

[0046] The seats 71h are provided, for example, at two locations of the first case 71 facing the two seats 21i of the motor 21. As a specific example, the seats 71h are formed in a planar shape along the two seats 21i of the motor 21, and are provided in pairs facing the two seats 21i. For example, the pair of seats 71h are provided adjacent to the outer fins 51d in the arrangement direction of the multiple fins 51d. The two seats 71h extend from the bottom of the first case 71 toward the motor 21 side beyond the adjacent fins 51d, and have a planar lower surface. The two seats 71h are provided with a third elastic body 93, which will be described later. That is, the two seats 71h are supported by the two seats 21i of the motor 21 via the third elastic body 93.

[0047] The screw holes 71i are formed in a part of the outer surface of the first case 71. A fastening member 99 for fastening the fan cover 21e is screwed into the screw holes 71i.

[0048] The second case 72 covers the first case 71. The second case 72 constitutes the cover wall portion 51b and a part of the peripheral wall portion 51a on the cover wall portion 51b side. The second case 72 is formed of, for example, a resin material or a metal material. When the second case 72 is formed of a resin material, it is preferable that the resin material is formed of a weather-resistant material. The second case 72 has, for example, a rectangular frame-shaped second flange portion 72a formed at the open end portion and a plurality of holes 72b formed in the second flange portion 72a.

[0049] The second flange portion 72a abuts against the first flange portion 71a of the first case 71. The second flange portion 72a is formed, for example, in a rectangular frame shape with one width direction being larger than the other width direction. The surface (lower surface) of the second flange portion 72a facing the first flange portion 71a is formed, for example, in a flat surface. The lower surface of the second flange portion 72a is in line contact with a fourth elastic body 94, which will be described later. In order to be in line contact with the fourth elastic body 94, the lower surface of the second flange portion 72a may have a protrusion along the extension direction of the fourth elastic body 94.

[0050] The holes 72b are holes into which fastening members 99 for fixing the first flange portion 71a and the second flange portion 72a can be inserted. The holes 72b are provided, for example, at the four corners (square) of the second flange portion 72a and face the holes 71c formed in the first flange portion 71a.

[0051] For example, a plurality of elastic bodies are provided. The elastic bodies suppress the transmission of noise and vibration of the motor 21 to the control unit 23. For example, the elastic bodies are formed of a rubber member or a resin material. The elastic bodies are provided between the motor 21 and the control unit 23, between the fastening member 99 and the motor 21 and / or the control unit 23, between the first case 71 and the second case 72, and between members fixed to the motor 21. A plurality of different types of such elastic bodies are used based on the shapes of the motor 21 and the control unit 23, etc.

[0052] As a specific example, the multiple elastic bodies include a first elastic body 91, a second elastic body 92, a third elastic body 93, and a fourth elastic body 94.

[0053] The first elastic body 91 is provided between the head of the fastening member 99 or a washer used in the fastening member 99 and the outer surface of the fan cover 21e. The first elastic body 91 is formed, for example, in an annular shape and is formed so as to be able to fit into a hole formed in the fan cover 21e into which the fastening member 99 is inserted. The first elastic body 91 is formed from an elastically deformable rubber material or resin material.

[0054] The second elastic body 92 is an elastic body for electric power lines, which is provided between the opening 21h of the motor casing 21c and the opening 71g of the first case 71 and has an opening 92a through which the electric power line 21f is disposed.

[0055] The second elastic body 92 seals the gap between the opening 21h of the motor casing 21c and the opening 71g of the first case 71. For example, the second elastic body 92 makes line contact with at least one of the opening 21h of the motor casing 21c or the opening 71g of the first case 71 around the power line 21f passing through the opening 92a. As a specific example, the second elastic body 92 has an annular first protrusion 92b surrounding the periphery of the opening 92a on one main surface. The second elastic body 92 also has a second protrusion 92c on the other main surface that has the same shape as the openings 21h, 71g and is inserted into the opening 21h of the motor casing 21c or the opening 71g of the first case 71.

[0056] The opening 92a of the second elastic body 92 is formed in a shape that conforms to the outer circumferential shape of the power line 21f. For example, when the outer circumferential shape of the power line 21f is circular, the opening 92a is formed in a circular shape. Also, for example, when the power line 21f is a three-wire line and the outer circumferential shape of the power line 21f is a shape formed by combining three circles, the opening 92a is formed in a shape that conforms to the outer circumferential shape of the power line 21f. For example, the opening 92a may be formed in a shape that is slightly larger than the outer circumferential shape of the power line 21f, and since the second elastic body 92 is elastically deformable, the opening 92a may be formed in a shape that is the same as the outer circumferential shape of the power line 21f or in a shape that is slightly smaller than the outer circumferential shape of the power line 21f.

[0057] The first protrusion 92b, for example, is in line contact with the opening 71g of the first case 71. The second protrusion 92c, for example, is inserted into the opening 21h of the motor casing 21c. The outer peripheral surface of the second protrusion 92c abuts against the inner peripheral surface of the opening 21g of the opening 21h.

[0058] In addition, the second elastic body 92 may be configured to have the first protrusion portion 92b on both main surfaces and abut (line touch) with the opening 21h of the motor casing 21c or the opening 71g of the first case 71, and may not have the second protrusion portion 92c.

[0059] The third elastic body 93 is a casing elastic body provided between the motor casing 21c and the first case 71 of the housing 51. The third elastic body 93 is formed, for example, in a plate shape long in one direction, and is formed of an elastically deformable rubber material or resin material. Two third elastic bodies 93 are provided, and are provided between the two seats 21i of the motor 21 and the two seats 71h of the first case 71. Note that, for example, the material and hardness of the third elastic body 93 can be freely selected as long as it can suppress the transmission of vibration from the motor casing 21c to the housing 51. For this reason, the third elastic body 93 may be foamed rubber.

[0060] The fourth elastic body 94 is a case elastic body provided between the first flange portion 71a of the first case 71 and the second flange portion 72a of the second case 72. The fourth elastic body 94 is formed, for example, in a ring shape with a portion disposed in a groove portion 71b formed in the first flange portion 71a and protruding from the groove portion 71b of the first flange portion 71a toward the second flange portion 72a, and is made of an elastically deformable rubber material or resin material.

[0061] The fourth elastic body 94 seals the gap between the first flange portion 71a and the second flange portion 72a, and seals the gap between the first case 71 and the second case 72. For example, the fourth elastic body 94 is formed such that at least one of the cross-sectional shapes of the first flange portion 71a side and the second flange portion 72a side is formed in a protruding shape like an O-ring, in other words, a shape that can be crushed. As a specific example, the fourth elastic body 94 is an annular O-ring seal along the extension direction of the groove portion 71b formed in the first flange portion 71a.

[0062] For example, two control boards 52 are provided. The two control boards 52 are fixed in the housing 51 by fastening members such as screws or bolts, spaced apart by a predetermined distance, for example, via a plurality of spacers 52a. One of the two control boards 52 is supported by the first case 71 by abutting against the bottom of the first case 71, specifically, against some of the seats 71e among the plurality of seats 71e provided in the first case 71.

[0063] The control board 52 includes a power element, a capacitor, a reactor, and a noise filter, which are mounted as electrical components. For example, the reactor is fixed to the housing 51 and connected to the control board 52. In addition, various electrical components for performing control operations, a wireless communication module for performing wireless communication, and the like are mounted on the control board 52. Note that the power element, the capacitor, the reactor, the noise filter, the control operation control board, and the wireless communication unit may be mounted on two or more control boards. That is, the control board 52 constitutes a power element control board, a capacitor control board, a noise filter control board, a control operation control board, and a wireless communication control board.

[0064] The control board 52 constitutes an inverter by mounting various circuits and elements including a power element, a capacitor, a reactor, and a noise filter. For example, one of the two control boards 52 having a heat generating element is provided adjacent to the heat dissipation fin 51c.

[0065] The power element is a heat generating element (heat generating body), and control board 52 on which the power element is mounted is disposed in contact with heat dissipation fins 51c inside housing 51. The power element is electrically connected to motor 21 of pump device 1 by, for example, power line 21f.

[0066] By mounting the power element, the control board 52 constitutes a power element control board. The control board 52 includes, for example, a processor, a converter section including a converter circuit, and an inverter section (inverter) including an inverter circuit. The control board 52 may also have a memory as a storage medium in addition to the memory of the processor. The control board 52 as the power element control board may be configured such that a plurality of mounted components (electrical components) such as a processor, a converter section, and an inverter section are mounted on a single control board 52, or may be configured such that a single or a plurality of mounted components are mounted on a plurality of control boards 52.

[0067] The processor is a control circuit for driving the motor. The processor is typically a microcomputer, but may be a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), a DSP (Digital Signal Processor), a DSC (Digital Signal Controller), or other general-purpose or dedicated processor. The processor performs any process, such as communication control, frequency control, etc. As shown in FIG. 5, the processor is connected to, for example, an inverter, a control operation control board, and a wireless communication unit.

[0068] The processor includes, for example, a processing circuit and a memory. The processor includes, for example, a non-volatile EEPROM (registered trademark) area and a memory such as a volatile DRAM area. The processor can function as a communication control unit and a frequency control unit as a processing unit by executing a program stored in the memory or the EEPROM area. Note that the internal configuration of the processor and the division of functions among the various units are for convenience and can be changed as appropriate.

[0069] Examples of the programs stored include firmware, an OS, a processing program mainly related to parameter processing, a pump control program (e.g., an automatic operation program), and a frequency control program, as appropriate. The programs may be obtained from an external terminal via a wireless communication unit and stored in a memory or an EEPROM area, or may be obtained from a memory in which they are stored beforehand by the processor and stored in the EEPROM area when the power is turned on. The programs may also be stored in a memory, but not in an EEPROM area, and the processor executes the programs stored in the memory.

[0070] Also, for example, when the power is turned on, read parameters such as the number of pumps, the type of water supply method, etc. may be obtained from the memory by the processor based on the connection state of the control operation board and stored in the EEPROM area. Note that the read parameters may not be stored in the EEPROM area, and the processor may obtain the read parameters stored in the memory.

[0071] For example, the read-out parameter for the number of pumps is the number of pump devices 1 used in the water supply device, and the read-out parameter for the type of water supply method is, for example, a direct water supply method or a water tank method. These read-out parameters are set when the pump device 1 is shipped or installed. The read-out parameters are not limited to these, and various read-out parameters can be set. Note that a configuration may be adopted in which no control operation control board is provided, or in which the read-out parameters are set on the control operation control board and then acquired from another control device or an external terminal via wireless communication.

[0072] The DRAM area is provided in the processor and stores the operation data. The operation data may be stored in a dedicated register provided in the DRAM area. Examples of the operation data include discharge pressure, instantaneous flow rate, output current, operation frequency, output voltage, and power consumption.

[0073] The communication control unit controls the wireless communication unit to perform wireless communication with other control devices and external terminals. For example, the communication control unit transmits a connection request to the other control devices and external terminals that have transmitted the advertising packets.

[0074] For example, in the autonomous driving mode, when communication is established between another control device and an external terminal, the communication control unit receives detection signals from various sensors, control parameters, programs, etc. from the other control device via the wireless communication unit, and transmits various operating parameters such as frequency to the other control device. Then, when communication is established between the communication control unit and the external terminal via the wireless communication unit, the communication control unit transmits various operating data, etc. to the external terminal.

[0075] The frequency control unit outputs, for example, an inverter control signal received from the general control unit via the wireless communication unit to the inverter, and controls the motor 21. In this way, the frequency control unit controls the pump 22 by performing constant target pressure operation or the like.

[0076] In addition, the frequency control unit may be configured to generate an inverter control signal based on, for example, a program for pump control stored in an EEPROM area of ​​a memory or a processor, each parameter received from another control device via a wireless communication unit, and the latest detection signals from each sensor, and output the inverter control signal to the inverter to control the motor 21.

[0077] The converter unit is, for example, a rectifier device configured with a converter circuit including a diode, a control circuit, etc. The inverter unit is, for example, a frequency generating device configured with an inverter circuit including a power semiconductor element such as an IGBT (Insulated Gate Bipolar Transistor) or an IPM (Intelligent Power Module), a control circuit, etc.

[0078] The capacitor is, for example, a non-electrolytic smoothing capacitor, for example, a film capacitor using a plastic film as a dielectric.

[0079] The reactor is a DC reactor provided on the secondary side of the converter unit. Note that the reactor may be an AC reactor provided on the primary side of the converter unit in addition to or instead of the DC reactor as a harmonic suppression measure.

[0080] The noise filter removes noise on the electric circuit of the control unit 23. For example, the noise filter includes an input-side noise filter that removes noise on the primary side (input side) of the power element control board, an output-side noise filter that removes noise on the secondary side (output side) of the power element control board, and the like.

[0081] As a specific example, the noise filter constitutes a noise filter that filters noise flowing through a power supply line, noise emitted from cables and printed wiring between the motor 21 and the inverter unit, ground noise due to leakage current from the motor 21, lightning surges, etc. The noise filter may be configured to remove any one of these noises or a selected plurality of noises, or may be configured to remove noises other than those mentioned above.

[0082] The control operation control board includes a display unit that displays various information such as the operating status, failure status, and setting status, an operation unit such as a push button switch that changes various settings, and a terminal that connects various input and output signals. For example, the operation unit of the control operation control board is an input unit that physically sets the electrical connection state for acquiring read parameters among the parameters related to control. As a specific example, the control operation control board uses a dip switch or a jumper pin as appropriate. The control operation control board is assigned with read parameters such as the number of pumps and the type of water supply method. In addition, the control operation control board may be configured to have an input unit that can input an operation command for the pump device 1 when wireless communication is not possible.

[0083] The wireless communication unit includes an antenna capable of transmitting and receiving information by radio waves. The wireless communication unit is, for example, a grounded monopole antenna. The wireless communication unit is, for example, implemented as a wireless communication module including a communication control board. For example, the wireless communication unit is configured by mounting a chip antenna or a pattern antenna on the control board.

[0084] Such a wireless communication unit is an arbitrary communication interface that is controlled by a processor and can communicate with other control devices that collectively control a plurality of pump devices 1, external terminals, etc., using wireless communication technology. The wireless communication unit can be connected to devices that perform wireless communication, such as other control devices and external terminals, using wireless communication technology such as short-range wireless communication technology, such as Bluetooth (registered trademark) (e.g., Bluetooth Low Energy standard (hereinafter also referred to as BLE standard)), Wi-Fi (registered trademark), and NFC (Near Field Communication), and long-range wireless communication technology, including general-purpose wireless communication technology including LTE (registered trademark) (Long Term Evolution) and other mobile phone lines, and dedicated wireless communication technology such as sigfox (registered trademark). Note that the wireless communication unit may use other wireless communication technology.

[0085] For example, the wireless communication unit may be configured to use a plurality of different wireless communication technologies, for example, a configuration using the BLE standard and NFC, and other technologies with different communication distances. In addition, when technologies with different communication distances are used in this manner, a configuration may be provided in which a plurality of wireless communication units are provided.

[0086] In addition, the wireless communication unit may receive some data for establishing a connection with other control devices and external terminals, for example, when connecting as a scanner and an advertiser via Bluetooth, requests from other control devices and external terminals as a scanner. For example, the wireless communication unit may broadcast an advertisement packet including identification information of the control unit. In addition, for example, the wireless communication unit may connect communication between the other control devices and the external terminals when receiving a connection request from the other control devices and external terminals that receive the advertisement packet. The wireless communication unit is an example of a communication means that is electrically connected to the processor and can connect communication between the other control devices and the external terminals.

[0087] The terminal block is provided in the housing 51. The terminal block has a plurality of terminals. The terminal block is connected to, for example, a DC section on the secondary side of the converter section. As an example, the terminal block is used when extracting regenerative energy of the motor 21 generated when the pump 22 is rotated by the force of water as a DC power source.

[0088] Pump device 1, which is a rotating machine device configured in this manner, includes an inverter (variable speed control unit) in control unit 23. In addition, since the mounted components of control board 52 constituting the inverter have a heat generating element, first case 71 is formed from a metal material with good thermal conductivity, and heat dissipation fins 51c are provided on the bottom of first case 71, and the bottom of first case 71 that comes into contact with at least the heat generating element of control board 52 is configured by the upper part of heat dissipation fins 51c, so that control unit 23 can be effectively cooled.

[0089] Moreover, the control unit 23 is mounted on the motor 21 and integrated with it, and a plurality of elastic bodies 91, 92, 94 are provided at the portion where the motor 21 and the control unit 23 are fixed.

[0090] Specifically, the pump device 1 is configured such that a first elastic body 91 is provided on a fastening member 99 that attaches the motor casing 21c and the housing 51 to the fan cover 21e, and a pair of third elastic bodies 93 is provided between the motor casing 21c and the first case 71 of the housing 51. This makes it possible to prevent vibrations generated during rotation of the rotating machines, that is, the motor 21 and the pump 22, from being transmitted to the first case 71 (controller 23) and the fan cover 21e, thereby enabling the pump device 1 to reduce noise.

[0091] This is because when vibrations are transmitted from the motor 21 to the control unit 23 during rotation of the rotating machine, the heat dissipation fins 51c, the first case 71, the second case 72, the fan cover 21e, and the like provided on the housing 51 vibrate. If resonance occurs depending on the rotation speed or the magnitude of the load, the noise level of the motor 21 alone may become high.

[0092] However, in the pump device 1 of this embodiment, a first elastic body 91 is interposed between the motor 21 and the first case 71 fixed to the motor 21, and a third elastic body 93 is interposed between the fan cover 21e and the motor 21 and the fastening member 99 that fixes the fan cover 21e to the first case 71. As a result, the first elastic body 91 and the third elastic body 93 act as vibration insulation measures, preventing vibrations of the motor 21 from being transmitted to the housing 51 and the fan cover 21e.

[0093] Furthermore, in the pump device 1, the heat dissipation fins 51c are provided on the bottom of the first case 71, and even if the upper surface of the bottom of the first case 71 is curved (concave), the ribs 71d are provided, so that it is possible to suppress the housing 51 from resonating due to the vibration transmitted from the motor 21, which acts in the same way as a drum. In particular, resonance can be suppressed more effectively by erecting the ribs 71d on the bottom of the first case 71, which is concave. Furthermore, since it is relatively easy to determine the positions of such ribs 71d that are effective in suppressing resonance by analytical techniques, actual machine confirmation tests, and the like, the number of ribs 71d can be reduced.

[0094] The pump device 1 also has an opening 21h in which an opening 21g is formed in the motor casing 21c and an opening 71g in which an opening 71f is formed in the first case 71, as through holes through which the power line 21f for connecting the motor 21 and the control unit 23 passes. A second elastic body 92 is provided between the opening 21h of the motor casing 21c and the opening 71g of the first case 71. For this reason, the second elastic body 92 can prevent vibration from being transmitted between the opposing openings 21h and 71g, and can seal the gap between the openings 21h and 71g by the second elastic body 92.

[0095] Moreover, by forming the opening 92a of the second elastic body 92 in the same shape as the outer circumferential shape of the power line 21f, it is possible to minimize or eliminate the gap between the opening 92a and the power line 21f. This makes it possible to suppress or eliminate the transmission of noise generated by the motor 21 from inside the motor casing 21c to inside the housing 51 by air propagation. Furthermore, since the second elastic body 92 restricts the radial movement of the power line 21f, it is also possible to prevent the generation of noise caused by the power line 21f moving and coming into contact with the motor casing 21c or the first case 71.

[0096] Furthermore, by providing the first protrusion 92b and the second protrusion 92c, the second elastic body 92 can improve the adhesion with the opening 21h of the motor casing 21c and the opening 71f of the first case 71. In particular, the first protrusion 92b that abuts at least one of the opening 21h of the motor casing 21c and the opening 71g of the first case 71 becomes a crushing margin when the second elastic body 92 contacts the opening 21h of the motor casing 21c and / or the opening 71g of the first case 71, thereby improving the sealing performance.

[0097] Furthermore, by forming the housing 51 from two parts, the first case 71 and the second case 72, the first case 71 in which the heat dissipation fins 51c are formed can be formed from a metal material, and the second case 72 can be formed from a material that is highly weather resistant, inexpensive, and / or lightweight.

[0098] In addition, by providing a fourth elastic body 94 between the first flange portion 71a and the second flange portion 72a that connect the first case 71 and the second case 72, it is possible to seal the first case 71 and the second case 72 and to suppress the transmission of vibrations of the first case 71 to the second case 72.

[0099] In addition, by making the cross-sectional shape of the fourth elastic body 94 on at least one of the first flange portion 71a side and the second flange portion 72a side into a protruding shape like an O-ring, this serves as a crushing allowance when the first flange portion 71a and the second flange portion 72a come into contact, thereby improving the sealing performance.

[0100] In particular, since the housing 51 contains electrical components such as the control board 52, it can be structured to prevent water from entering, so that the pump device 1 can also be used outdoors.

[0101] Furthermore, since the elastic bodies 91, 92, 93, and 94 used as vibration isolation measures can be made of rubber materials or the like, vibration isolation measures for the pump device 1 can be implemented at low cost.

[0102] As described above, in the pump device 1 according to the embodiment, the elastic bodies 91, 92, 93, and 94 can prevent vibrations of the motor 21 from being transmitted to the control unit 23, thereby suppressing noise and vibrations.

[0103] The present invention is not limited to the above-described embodiment. For example, the pump device 1 has been described as being configured to provide a plurality of elastic bodies 91, 92, 93, and 94 on the motor 21 and the control unit 23, which is a member fixed to the motor 21, as a measure against vibration transmission, but the elastic bodies 91, 92, 93, and 94 are not limited to the above-described example. That is, the number, shape, vibration transmission property, and sealing property of the elastic bodies can be appropriately set according to the shape and configuration of the motor 21 and the shape and configuration of the member (control unit 23) connected to the motor 21.

[0104] Furthermore, the number, shape and arrangement of the above-mentioned ribs 71d and 71e can be appropriately set according to the shape of the first case 71, the shape of the control board 52 arranged in the housing 51, the shape of the mounted items, and the like.

[0105] In the above example, the pump device 1 has been described as an example of a rotating machine device, but the present invention is not limited to this. In other words, the rotating machine device is not limited to the pump device 1 as long as it is a rotating machine device in which an elastic body is provided between the rotating machine and a member to which vibrations generated by the rotating machine are transmitted.

[0106] The present invention is not limited to the above-mentioned embodiment, and can be modified in various ways without departing from the gist of the present invention. The embodiments may be combined as appropriate, and in that case, the combined effect can be obtained. Furthermore, the above-mentioned embodiment includes various inventions, and various inventions can be extracted by combinations selected from the multiple components disclosed. For example, if the problem can be solved and the effect can be obtained even if some components are deleted from all the components shown in the embodiment, the configuration from which the components are deleted can be extracted as an invention. The following provides a description equivalent to the invention described in the original claims of this application. [1] A motor coupled to a rotating machine and having a motor casing; an inverter that drives the motor; a case for accommodating the inverter, the case being provided on a part of an outer surface of the motor casing and having a heat dissipation fin on a bottom portion facing the motor casing; a casing elastic body provided between the motor casing and the case; A rotating machine comprising: [2] The rotating machinery device described in [1], wherein the case has a bottom that contacts a heating element of a control board that constitutes the inverter. [3] The motor casing and the case each have an opening through which a power line passes, an elastic body for a power line, the elastic body having an opening through which the power line is disposed, the elastic body being provided between the opening of the motor casing and the opening of the case; The rotating machine device according to [1] or [2], comprising: [4] The rotating machinery device described in [3], wherein the elastic body for the power line seals the gap between the opening of the motor casing or the opening of the case by making line-touch contact with at least one of the opening of the motor casing or the opening of the case around the power line passing through the opening. [5] A rotating machine device as described in [3] or [4], wherein the opening of the power line elastic body is shaped to follow the outer circumferential shape of the power line. [6] The heat dissipation fins include a plurality of fins arranged along an outer circumferential shape of the motor casing, The bottom of the case is curved along the arrangement of the plurality of fins, The rotating machinery device according to any one of [1] to [5], wherein the case has a rib running along the bottom and sides, the rib being provided at least on the central side of the case in a direction perpendicular to the axial direction of the motor shaft of the motor. [7] A fan provided at an end portion opposite to the end portion to which the rotating machine is connected; a fan cover that covers the fan and is fixed to at least one of the motor casing and the case; a fastening member that fixes the fan cover to at least one of the motor casing and the case; a fastening member elastic body provided between the fastening member and at least one of the motor casing and the case; A rotary machine device according to any one of [1] to [6], comprising: [8] The case includes a first case having the heat dissipation fins and a second case covering the first case, A rotating machine according to any one of [1] to [7], further comprising a case elastic body arranged between the first case and the second case. [9] The rotating machinery device described in [8], wherein the case elastic body seals between the first case and the second case. [Explanation of symbols]

[0107] 1...pump device (rotating machine device), 21...motor (rotating machine), 22...pump (rotating machine), 21a...motor shaft, 21b...motor heat dissipation fin, 21c...motor casing (motor frame), 21d...external fan, 21e...fan cover, 21f...power line, 21g...opening, 21h...opening, 21i...seat, 22...pump (rotating machine), 23...control unit, 51...casing (case), 51a...peripheral wall, 51b...lid wall, 51c...heat dissipation fin, 51d...fin, 51e...cable hole, 52...control board, 52a...spacer, 71...first case, 71a...first flange portion, 71b...groove portion, 71c...hole, 71d...rib, 71e...seat surface, 71f...opening, 71g...opening, 71h...seat portion, 71i...screw hole, 72...second case, 72a...second flange portion, 72b...hole, 91...first elastic body, 92...second elastic body, 92a...opening, 92b...first protrusion portion, 92c...second protrusion portion, 93...third elastic body, 94...fourth elastic body, 99...fastening member

Claims

1. a motor coupled to the rotary machine and having a motor casing; An inverter that drives the motor; a case for accommodating the inverter, the case being provided on a part of an outer surface of the motor casing and having a heat dissipation fin on a bottom portion facing the motor casing; a casing elastic body provided between the motor casing and the case; An elastic body for a power line; Equipped with the motor casing and the case each have an opening through which a power line passes; a rotating machinery device, wherein the elastic body for the power line is provided between the opening of the motor casing and the opening of the case, has an opening through which the power line is arranged, and has a protrusion that is inserted into the opening of the motor casing.

2. The outer surface of the opening of the motor casing is formed in a planar shape along the axial direction of the motor shaft of the motor, the motor casing has a planar seat portion aligned along the axial direction of the motor shaft, The casing elastic body is provided on the seat portion, The rotary machinery device of claim 1 , wherein an upper surface of the seat is parallel to an upper surface of the opening.

3. The case has a seat portion facing the seat portion of the motor, The rotary machine according to claim 2 , wherein the seat portion of the case is supported by the casing elastic body.

4. The heat dissipation fins include a plurality of fins arranged along the outer circumferential shape of the motor casing, 4. The rotating machinery device according to claim 1, wherein the seat portion of the case is adjacent to the outer fin in the arrangement direction of the multiple fins, extends toward the motor further than the adjacent fins, and has a flat lower surface.

5. 5. The rotating machinery device according to claim 1, wherein the power line elastic body seals the gap between the opening of the motor casing or the opening of the case by making line-touch contact with at least one of the opening of the motor casing or the opening of the case around the power line passing through the opening.

6. The rotating machine device according to claim 1 , wherein the opening of the power line elastic body has a shape that follows an outer circumferential shape of the power line.

7. The heat dissipation fin includes a plurality of fins arranged along an outer circumferential shape of the motor casing, The bottom of the case is curved along the arrangement of the plurality of fins, 7. The rotating machinery device according to claim 1, wherein the case has a rib extending along the bottom and sides thereof and provided at least on a central side of the case in a direction perpendicular to a direction along an axial direction of the motor shaft of the motor.

8. a fan provided at an end portion opposite to an end portion to which the rotating machine is connected; a fan cover fixed to at least one of the motor casing and the case, the fan cover covering the fan; a fastening member that fixes the fan cover to at least one of the motor casing and the case; a fastening member elastic body provided between at least one of the motor casing and the case and the fastening member; A rotary machine according to any one of claims 1 to 7, comprising:

9. The case includes a first case having the heat dissipation fins and a second case covering the first case, The rotary machine according to claim 1 , further comprising a case elastic body disposed between the first case and the second case.

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