CN106953451B

CN106953451B - Pump device

Info

Publication number: CN106953451B
Application number: CN201610841906.5A
Authority: CN
Inventors: 富田敏夫; 冈藤启; 高桥伸一; 藤田幸央
Original assignee: Hitachi Industrial Equipment Systems Co Ltd
Current assignee: Hitachi Industrial Equipment Systems Co Ltd
Priority date: 2011-07-22
Filing date: 2012-04-25
Publication date: 2020-11-03
Anticipated expiration: 2032-04-25
Also published as: CN103688450B; KR101531548B1; CN106953451A; WO2013014832A1; KR20140019440A; CN103688450A

Abstract

The present invention provides a pump device in which a pump section having an impeller and provided in a pump housing and a rotating electric machine for rotationally driving the impeller are integrally formed, the rotating electric machine including: a housing having a plurality of cooling fins on an outer periphery thereof; a cylindrical stator accommodated inside the housing; a rotor fixed to a rotating shaft of the rotating electrical machine; a bearing supporting the rotating shaft; a fan mounted on the rotating shaft; a power conversion device having a power switching element that supplies a drive current to an armature of the rotating electrical machine; a control board that controls an operation of the rotating electric machine by the power conversion device; and a capacitor used in a circuit of the power conversion device, the power conversion device being directly mounted on a mounting portion of the power conversion device formed in the case so that heat generation of a power switching element of the power conversion device is transmitted to the case, and the case is air-cooled by the fan.

Description

Pump device

Technical Field

The present invention relates to a pump device installed as a part of a water supply line (water supply line) or a product in a factory, for example.

Background

Conventionally, pump devices have been used in various applications such as home water supply, factory water supply, and installation of products to customers.

However, when water is supplied in a factory or a product is assembled by being attached to a customer, the pump device needs to be attached to a middle of a pipe, and thus, when the pump device is replaced, the pump device needs to have the same attachment dimension or the same outer dimension as the installed pump device. Further, most of the pump devices for plant water supply are operated at a fixed speed of the maximum rotational speed by a commercial power supply. Energy saving can be achieved if a variable speed pump device is used in which the pump is operated at a variable speed according to the amount of water used, but in order to use the variable speed pump device, it is necessary to perform an installation operation of a control panel including an inverter.

For example, a pump device capable of variable speed operation control such as constant pressure control, which can be mounted without changing the equipment piping, is known from patent document 1 below. In fig. 1 of reference 1, in a pump device in which a pump section having an impeller and a motor section for rotationally driving the impeller 11 are integrated, the pump device is provided in a pump housing, and a control section for receiving a signal from a pressure sensor and performing variable speed operation of the pump section is disposed outside the motor section.

As the motor, a motor having a controller-integrated structure in an output type having a medium or higher capacity is known from patent document 2. Fig. 1 of reference 2 discloses a structure in which a control device case of a control unit is divided into a plurality of cell cases, and an end cover (end frame) or a case is stacked and fixed to a load-opposite side of the cell cases.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2009-41500

Patent document 2: japanese laid-open patent publication No. 11-27903

Disclosure of Invention

Technical problem to be solved by the invention

However, in the technique described in patent document 1, although the compatibility is achieved in terms of the mounting size of the pipes, the control unit is increased in size corresponding to the mounting size of the motor unit, and the compatibility is not achieved in terms of the outer shape size of the pump device already installed in which the control board is separately provided. In addition, in an environment where installation conditions are strict, such as a narrow installation space and the installation of the pump device into a product, exchange with an already installed pump device is not possible.

Further, when the pump device is installed in a factory to supply water or when a product is assembled by a customer, the pump device needs to be installed in the middle of the pipe, and therefore, if the center of gravity of the pump device is deviated, a burden is imposed on the pipe. Further, when the pump device is replaced, the pump device is temporarily placed alone, and it is necessary to be able to stably maintain a balance (free standing, not toppling) with itself.

In the technique described in patent document 1, the center of gravity is shifted in accordance with the mounting of the control unit to the outside of the motor unit. Although the self-supporting is possible when the weight of the pump section and the rotating motor section is sufficiently larger than that of the control section, the control section has a considerable weight with respect to the pump section and the rotating motor section, and therefore it cannot be considered that the self-supporting is stable.

In the electric motor described in patent document 2, among various components provided together with the rotating electric machine main body, particularly in the electric power conversion device, the power switching elements (e.g., IGBTs and the like) constituting the inverter generate heat greatly. Therefore, as disclosed in patent document 2, when the inverter is mounted inside a cylindrical case disposed in a stacked manner on a rotating shaft at one end of the rotating electrical machine, it is difficult to reliably dissipate heat generated by the inverter (i.e., the power switching element) to the outside.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a space-saving drive unit controller-integrated pump apparatus which can reliably dissipate heat, can be mounted without changing the structure of equipment piping or products, and can perform variable speed operation control such as constant pressure control and the like with a single pump apparatus. It is another object of the present invention to provide a pump device that can be installed without placing a burden on equipment piping or product structures, can perform variable speed operation control such as constant pressure control on the pump device alone, and can stably stand by itself (maintain its own balance).

Technical solution for solving technical problem

A pump device in which a pump section having an impeller and provided in a pump housing and a rotating motor for rotationally driving the impeller are integrally formed, the pump device comprising: the rotating electric machine includes: a housing having a plurality of cooling fins on an outer periphery thereof; a stator mounted to the housing; a rotor fixed to a rotating shaft of the rotating electrical machine and configured by cylindrically disposing a plurality of permanent magnets; a bearing supporting the rotating shaft; an end cover for mounting the bearing; a fan attached to an end portion of an end cover on the opposite side of the side where the pump section is attached; a cover covering the housing; a power conversion device that is attached to a part of the housing and supplies a drive current to an armature of the rotating electric machine; and a control board that is attached to another part of the housing, performs input/output with the outside, and controls the operation of the rotating electric machine by the power conversion device.

Further, a pump device according to the present invention is a pump device in which a pump section having an impeller and a rotating electric machine section for rotationally driving the impeller, the pump section being provided in a pump housing, are integrally formed, the pump device including: the rotating electric machine unit includes a casing, and the following components are arranged around the casing: an inverter main body for supplying a drive current to the rotating electric machine unit; a control board for controlling the operation of the rotating electric machine; and a capacitor constituting a part of the inverter circuit, wherein the pump device includes a case accommodating at least a part of the case, the inverter, the control board, and the capacitor, and the inverter main body and the capacitor are disposed at separate positions.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a space-saving pump device integrated with a drive unit control device, which has excellent heat dissipation and is suitable for exchange with an existing device. Further, a pump device in which the rotating motor portion and the control portion are integrated can be realized with good self-standing and balance.

Drawings

Fig. 1 is an external perspective view showing an overall configuration of a pump device as an embodiment of the present embodiment.

Fig. 2 is a cross-sectional view of the pump apparatus shown in fig. 1.

Fig. 3 is an external perspective view showing an embodiment of the entire configuration of a rotary electric machine assembly for driving a pump device according to an embodiment of the present invention.

Fig. 4 is an expanded perspective view showing the entire structure of a rotating electric machine part built in a cover of a driving rotating electric machine assembly of the pump device.

Fig. 5 is an expanded perspective view showing the respective portions when the rotating electric machine shown in fig. 4 is housed in the cover.

Fig. 6 is a partially cut-away perspective view illustrating another example of the positional relationship between the power converter and the stator (armature) mounted on the housing in the rotating electric machine assembly.

Fig. 7 is a perspective view showing another example of the core constituting the stator (armature) in the rotating electric machine assembly.

Fig. 8 is an external perspective view showing an overall configuration of a pump device according to another embodiment of the present invention.

Fig. 9 is a cross-sectional view of the pump apparatus shown in fig. 8.

Fig. 10 is a schematic view of the center of gravity of the integral pump device in which the power conversion device is disposed outside the motor unit.

Fig. 11 is a diagram illustrating the ease of pouring of the pump device of fig. 10.

Fig. 12 is an explanatory view of the center of gravity of the pump device according to the other embodiment of the present invention.

Fig. 13 is a view illustrating easiness of pouring of the pump device according to the other embodiment of the present invention.

Fig. 14 is a diagram illustrating a desired center of gravity position of a pump apparatus according to another embodiment of the present invention.

Fig. 15 is a flowchart of a control method when a plurality of pumps of the present invention are used.

Fig. 16 is a schematic diagram of communication between the pump device of the present invention and a pump monitoring site or a host of the same type of pump device.

Fig. 17 is a block diagram showing a connection relationship of a plurality of pump devices.

Detailed Description

Hereinafter, the details of the embodiments of the present invention will be described with reference to the drawings.

First, fig. 1 shows an embodiment of the present invention, and shows an overall structure of a pump device installed outdoors, for example. In the figure, reference numeral 1 denotes a pump housing, and reference numeral 10 denotes a cover that covers the outer periphery of the rotating electric machine assembly. Reference numeral 20 denotes a cooling jacket. Reference numeral 40 denotes a noise filter built-in terminal box, and the outer dimensions of a case that houses the pump case, the cover, the noise filter built-in terminal box, and the power conversion device are limited to be equal to or smaller than the outer dimensions of a pump device that is already provided and to which the induction motor is mounted. As will be described later, the motor of the present invention is characterized by its cooling structure and the component arrangement structure of the control section, and has a high heat radiation effect, and in the case where the pump device already installed is an induction motor-mounted pump device separately provided with a control panel, the pump device can be made equal to or smaller than the outer dimension of the pump section. The pump device integrated with the drive unit controller can be replaced without affecting the water pipe or the product.

Fig. 2 shows a cross-sectional view of the pump device. A housing cover or an end cover integrated with the end cover is provided in consideration of air flow, in which air is sent from the outside by rotation of a centrifugal fan described later, passes through the cover, and flows between a plurality of cooling fins formed on an outer peripheral surface of the housing. The inside of the cover 10 accommodates a rotating electrical machine main body, and a rotating shaft (draft) 56 of the rotating electrical machine is connected to rotate an impeller disposed in a pump casing. The rotation shaft of the impeller in the pump section coincides with the rotation shaft of the rotating motor section.

Fig. 3 shows an overall structure of the rotating electric machine assembly used in fig. 1 and 2. In other words, in the figure, reference numeral 10 denotes a cover that covers the outer periphery of the rotating electric machine main body, and has a substantially cylindrical outer shape. The cover 10 is formed by pressing a plate-like resonance suppression material into a predetermined shape. More specifically, a sound absorbing material, a sound insulating material, a shock absorbing material, a vibration preventing material, etc. may be installed inside the cover to suppress noise or vibration.

A cooling cover 20 incorporating a centrifugal fan 21 described later is attached to one end (inside in the figure) in the axial direction of the cylindrical cover 10, and an end cover 11 of a rotating electrical machine described later is attached to the other end (outside in the figure). Further, a case (casing, power conversion device casing) 30 for housing a power conversion device described later and a terminal box (noise filter built-in terminal box) 40 having a noise filter built therein are mounted on the outer peripheral surface of the cylindrical cover 10.

Next, the entire structure of the rotating electric machine portion 50 built in the above-described cover 10 is shown as an expanded view in fig. 4. In the drawing, reference numeral 51 denotes a substantially cylindrical case (or also referred to as a "frame"), and the case 51 is formed by, for example, pressing a material such as aluminum having excellent thermal conductivity (heat conductivity). As shown in the drawing, the casing 51 has a plurality of

cooling fins

52L, 52S formed on the entire outer peripheral surface thereof and extending in a row along the cylindrical rotation axis. Further, a flat surface 53 having a large area for mounting the power converter (i.e., the power converter case) 30 is formed on a part (upper part in the drawing) of the outer peripheral surface of the housing 51, and cooling fins 52L having a large size (long extension) are formed around the flat surface in the horizontal direction.

An armature constituting a stator (stator)54 of the permanent magnet rotating electrical machine is inserted and fixed into the cylindrical housing 51, and a rotor (rotor)55 formed by a plurality of permanent magnets arranged cylindrically is inserted into a cylindrical inner space of the armature 54 and is rotatably attached with a predetermined gap therebetween. In the figure, reference numeral 56 denotes a rotary shaft (draft) formed integrally with the rotor (rotor)55, and a rotary driving force of the rotary electric machine is transmitted to a driven device such as a pump through the shaft. In the figure, reference numeral 57 denotes an end cover attached to an end portion of the housing 51 on the opposite side of the end cover 11, and reference numeral 58 denotes a centrifugal fan attached to the rotary shaft (draft) 56 on the outer side of the end cover (end bracket) 57.

Further, fig. 5 shows parts when the rotating electric machine 50 is housed inside the cover 10 shown in fig. 3 as an exploded view. That is, in the rotating electric machine 50, a control and I/F board case 60 and a smoothing capacitor case 70, each having an approximately circular arc-shaped outer cross section, are attached (or fixed) to a part of the outer peripheral surface of the casing 51, for example, a part having a short cooling fin 52 formed on the lower periphery in the drawing, and then inserted into the cover 10 (see an arrow in the drawing). Further, the power converter 31 having a power switching element (e.g., an IGBT or the like) as a heat generating element constituting an inverter in a part thereof is attached to the flat surface 53 of the case 51 of the rotating electrical machine 50 through an opening 511 provided in a part of the cover 10 on the flat surface 53 of the case 51, and then a cover (power converter cover) 30 for protecting the power converter is attached from the outside (see an arrow in the drawing). Further, the terminal box (noise filter built-in terminal box) 40 (refer to an arrow in the drawing) is attached to a part of the outer peripheral surface of the housing 51. The cooling cover 20 is attached to the other (other) end portion (left end in the drawing) of the housing 51. In the figure, reference numeral 21 denotes a plurality of small holes formed in a grid pattern in a substantially central portion of the wall surface of the cooling cover 20 for sucking in outside air.

That is, with the rotating electric machine assembly including the rotating electric machine main body and its peripheral devices, the centrifugal fan 58 attached to the tip thereof is rotated by the rotating shaft (draft) 56 that rotates in accordance with the operation of the rotating electric machine, and the air from the outside is introduced into the inside of the cover 10, flows between the plurality of cooling fins 52 formed on the outer peripheral surface of the housing 51, and exchanges heat (refer to the hollow arrows in fig. 4). Then, the liquid flows out through a gap with the end cap 11 of the other end (the other end) to the outside. That is, the case 51 having the plurality of cooling fins 52 formed on the outer peripheral surface thereof is cooled by the air flow generated by the rotation of the centrifugal fan 58.

As described above, the power conversion device 31 constitutes an inverter and includes therein the power switching elements as the heat generating elements, and therefore generates a large amount of heat. In contrast, according to the present invention, the power conversion device 31 is directly mounted to a part of the housing 51, i.e., the mounting flat surface portion 53 thereof, as described above, wherein the housing 51 is integrally provided on the outer periphery of the stator 54 for discharging heat generated by the rotating electric machine to the outside. Thus, heat generated by the power converter 31 is transmitted to the case 51 together with heat generated by the rotating electric machine (particularly, heat generated by the armature thereof), and is efficiently transmitted to the outside air through the plurality of cooling fins 52 formed of a material having good thermal conductivity and arranged in parallel on the entire outer peripheral surface thereof. That is, since the heat generated by the power converter 31 can be efficiently discharged to the outside together with the heat generated by the rotating electric machine, a good cooling effect of the power converter can be achieved.

In particular, in the embodiment, since the horizontally large (long-extended) cooling fins 52 are formed on the periphery of the mounting flat surface 53 formed in the upper portion of the cylindrical case 51 where the power converter 31 is disposed, heat generated by the power converter 31 can be efficiently cooled together with heat generated by the rotating electrical machine.

As described above, according to the present invention, since the control IF board cassette 60 and the capacitor cassette 70 are mounted (fixed) on a part of the outer peripheral surface of the case 51, heat generated inside the cassettes can be efficiently discharged to the outside through the cooling fins 52 formed on the outer periphery of the case 51 as well.

The control/I/F board cassette 60 is provided with a control controller (for example, a control microcomputer) and a communication I/F board inside, and a resin material or the like is injected into the control/I/F board cassette, thereby providing excellent environmental resistance and impact resistance. By mounting the control and I/F board cassette 60 on a part of the rotary motor, it is possible to control the driving of the pump installed outdoors and to communicate with the outside by wireless or wired communication. Further, by mounting a pressure sensor, a flow sensor, and the like on the control and I/F board, for example, it is possible to automatically control these quantities as feedback signals, and further, by transmitting (communicating) to a support sensor, it is also possible to realize a centralized management, an integrated energy saving monitoring system, and the like. That is, operation management, energy-saving operation, and the like of the pump installed outdoors are thereby made possible, and as described below, it is also made possible to realize remote monitoring, centralized management, and even systematization of a plurality of pumps.

Further, the capacitor case 70 accommodates therein a smoothing capacitor constituting a part (component) of the inverter circuit of the power conversion device 31, and achieves environmental resistance and impact resistance by injecting a resin material into the interior thereof as described above. In the present example, a DC reactor (direct current reactor) constituting a part of the inverter is incorporated in a part of the power conversion device 31, but the DC reactor may be incorporated in a dedicated box and attached to a part of the outer peripheral surface of the case 51.

In addition, as an alternative to the above-described embodiment, in the present invention, for example, as shown in fig. 6, a heat generating portion (a mesh portion in the drawing) H in the power conversion device 31 may be disposed on a flat surface portion 53 of the cylindrical housing 51 so as to be offset from a central portion (indicated by a broken line B in the drawing) of a stator (armature) 54 as a heat generating portion on the rotating electric machine side on the rotation central axis thereof, for example, so as to be close to the centrifugal fan 21 side built in the cooling cover 20. Thereby, by dispersing the heat generating portion without concentrating it, efficient cooling becomes possible.

Further, as shown in fig. 7, a so-called cut (or cut) core in which a part of the outer periphery of the stator (armature) 54, particularly a part close to the flat surface portion of the housing 51 to which the power conversion device 30 is attached, is cut (or cut portion 541) may be used. Thus, the power conversion device 30, which is a heat generating portion, is separated from the stator (armature) 54 in terms of heat conduction by the cut portions, and the heat absorption by the housing 51 is separated individually, so that efficient cooling becomes possible.

As is apparent from the above description, the pump device of the present invention is configured integrally with a power conversion device including an inverter, various circuit boards, a noise filter, and a capacitor by directly using the housing having the cooling fins formed on the outer periphery thereof as a cooling unit of a heat generating component such as an inverter. That is, in the present invention, by using the permanent magnet motor, the size of the motor can be made smaller than that of the induction motor. By disposing the components such as the power conversion device and the control board around the casing as described above, it is possible to provide a pump device having an outer shape of a size equal to or smaller than that of a pump device in which an induction motor having an equivalent output performance and a control board is separately installed. That is, not only can the pump device mounted with the existing induction motor be replaced, but also the control panel is not needed, and the space can be greatly saved.

Further, by adopting the above heat radiation structure not only in the outer dimensions, a high heat radiation effect can be obtained with respect to heat radiation which is a problem of the related art, and a pump device which can be driven in practical terms can be provided.

In the present invention, since the drive unit controller is an integral pump device having the above-described features, it is possible to easily control a plurality of pump devices from a mobile terminal, a pump monitoring place, a host of the same type of pump device, or the like without providing a separate control panel.

Next, fig. 8 shows an overall structure of a vertical type direct-acting pump such as an outdoor pump device as another embodiment of the present invention. The same rotating electric machine assembly as that described with reference to fig. 3 to 7 is used.

In the figure, reference numeral 1 denotes a pump housing, and reference numeral 10 denotes a cover that covers the outer periphery of the rotating electric machine assembly. Reference numeral 20 denotes a cooling jacket. Reference numeral 30 denotes a case that houses the power conversion device, and reference numeral 40 denotes a noise filter built-in terminal box.

Fig. 9 shows a cross-sectional view of the pump device. As described later, air is sent from the outside by the rotation of the centrifugal fan, passes through the shroud and flows between the plurality of cooling fins formed on the outer peripheral surface of the casing, and flows out of the outside through the gap with the end cover. In consideration of the flow of air, a housing cover shown by symbol 2 is installed.

The inside of the cover 10 accommodates a rotating electric machine main body, and a rotating shaft (draft) 56 of the rotating electric machine is connected to rotate an impeller disposed in the pump housing. The rotation shaft of the impeller in the pump unit coincides with the rotation shaft of the rotating motor unit, and the rotation shaft is perpendicular to a pump installation surface when the pump is in use.

Next, the balance and self-standing stability of the pump device of the present embodiment will be described with reference to schematic diagrams of fig. 10 to 14.

Fig. 10 is an explanatory diagram (schematic diagram) of the center of gravity position when a power conversion device including an inverter is provided in a pump device integrated with a conventional rotating electric machine assembly (motor unit). In fig. 10, the power conversion device is disposed outside the motor portion integrated with the pump portion in a unified manner. In this case, the power conversion device is heavy, and as shown in the lower side of fig. 10, the center of gravity position of the power conversion device and the motor unit combined is greatly deviated from the rotation shaft of the rotating electrical machine (motor).

In this state, even when the entire pump device is slightly inclined as shown in fig. 11, the center of gravity is located at a position deviated from the rotation axis of the motor unit, and therefore, the pump device is immediately inclined, and the balance and the self-standing stability are insufficient. It is known that if such a pump device is incorporated in the middle of a pipe, a large load is imposed on other piping parts.

Fig. 12 is an explanatory view (schematic view) of the center of gravity of the pump device of the present invention. In the present invention, unlike fig. 10, the power conversion device, the control board, and the smoothing capacitor are separately arranged so that at least a part thereof is housed inside the cover of the rotating electrical machine assembly.

Specifically, as shown in fig. 5, the power conversion device 31 is disposed on the upper portion of the housing 51, the capacitor case 70 is disposed inside the lower portion of the housing 51, and the control/I/F board case 60 is disposed outside (on the front side) the lower portion of the housing 51. The respective components are separated by approximately 120 ° about the rotation axis of the rotating electric machine.

In particular, in consideration of the weight ratio of the power conversion device 31 and the smoothing capacitor being larger than the weight of the I/F substrate 60, the present invention requires at least the power conversion device and the smoothing capacitor to be disposed at positions (for example, 120 ° to 180 °) apart from the rotation shaft of the rotating electrical machine.

On the other hand, since the noise filter is relatively light in weight with respect to the power conversion device, the noise filter case 40 is disposed outside the cover 10, but has little influence on the center of gravity position of the pump device.

As a result, as shown in the lower side of fig. 12, the center of gravity of the motor unit, each power conversion device, the control board, the capacitor, and the pump unit, which are all combined, is located in the vicinity of the rotation axis of the motor unit.

As shown in fig. 13, in the pump device of the present invention, since the center of gravity is located in the vicinity of the rotation shaft of the motor unit, the pump does not fall down even if it is inclined to some extent, and balance and self-standing stability can be ensured. Thus, when the pump device of the present invention is installed in the middle of the pipe, it can be stably installed without placing a large burden on the pipe or other parts. Further, since the pump device of the present invention is excellent in self-standing property during installation work, the pump device and other components can be prevented from being damaged by the falling of the pump, and the workability is excellent.

Fig. 14 shows a desired position of the center of gravity of the entire pump device. The center of gravity is located near the center axis because it is more difficult to tilt the center of gravity as the center of gravity is located closer to the center axis. In particular, the rotation axis of the impeller in the pump portion coincides with the rotation axis of the rotating motor portion, and it is considered desirable that the rotation axis of the motor portion and the rotation axis of the pump portion are within 1/2 of the diameter of the motor portion.

Further, since the lower the center of gravity, the more difficult it is to tilt, it is desirable that the center of gravity is located inside a cone defined by a circle 1/2 of the diameter of the bottom surface of the lower portion of the motor unit with the center point of the bottom surface of the upper portion of the cylindrical portion of the housing of the motor unit as the apex, as shown by the shaded area in fig. 14. Here, the diameter of the motor means the maximum diameter of the motor portion covered by the cover.

In the above-described embodiment, the pump-driving rotary electric machine assembly provided outdoors is configured by the permanent magnet rotary electric machine, but the present invention is not limited thereto, and may be configured by another type of rotary electric machine, and similar effects can be obtained by the same, as will be clear to those skilled in the art. Further, in the above-described embodiment, the cover 10 is formed to be extended so as to cover almost the entire rotating electric machine section 50, but the present invention is not limited to this point, and for example, the cover 10 may be formed to be approximately half of the length of the rotating electric machine section 50, and the same effect as described above can be obtained even in this case.

The control of the pump device integrated with the drive portion control device which exhibits the above-described features will be described with reference to fig. 15 to 17.

Fig. 15 is a flowchart of a control method when a plurality of pumps of the same type are used. When the amount of water increases beyond a predetermined reference or the pressure (pressure) decreases below a predetermined reference while the pump is stopped (101), it is determined that the pump needs to be started, and 1 pump is started (103). On the other hand, when the amount of water is reduced (104), the pump does not need to be started, and the state in which the pump is stopped continues (101).

When 1 pump is in operation (201), when the water amount increases over a predetermined reference or the pressure drops below a predetermined reference (202), it is determined that more pumps need to be started, and 1 pump is started (203). On the other hand, when the amount of water is reduced (204), since it is not necessary to start the pump, 1 pump is stopped (205).

Further, when 2 pumps are in operation (301), if the water amount increases above a predetermined reference or the pressure drops below a predetermined reference (302), it is determined that more pumps need to be started, and 1 pump is started (303). On the other hand, when the amount of water is reduced (304), 1 pump is stopped (305). The control was performed by the same flow as described above for 3 or more stations.

As shown in fig. 16, the pump control is performed for a plurality of drive unit controller-integrated pump apparatuses from a pump monitoring location, a host of the same type of pump apparatus, or the like.

Confirmation of the current state, an instruction to start the operation, an instruction to stop the operation, and the like are transmitted from a pump monitoring place, a host of the same type of pump apparatus, and the like to each pump apparatus. These instructions are performed by controlling the pump device and the I/F board using a wireless communication or control signal line (wired line) such as a built-in wireless LAN or Bluetooth (registered trademark).

An identification number is assigned to each pump device during communication. The control board of the pump device is provided with a storage unit having an area for storing an identification number unique to the pump device. Data is transmitted in accordance with a predetermined communication format using a randomly generated number other than a predetermined number (for example, 0000 to 0099) as an identification number. When data is transmitted from a pump monitoring location or a host of the same type of pump device to the pump device without a reply, communication is performed again after a randomly determined time. When a reply (response) is present, an identification number (for example, 0000 to 0099) designated in the reply data is used as the identification number of the pump device. In order to prevent communication conflicts, the pump devices assigned 0000 to 0099 stop communication for a certain time after each communication, so that communication other than 0000 to 0099 can be performed.

When the pump device fails, a failure message is transmitted from the pump device side by communication. When a pump device in a pump monitoring place or a pump device host that manages the number of operating units fails, the pump device is stopped, and a replacement pump device is started.

The monitoring device or the pump device that monitors the pump device has a region that stores the operating state (the content of a failure if it is a failure) or the cause of a failure of another pump device, the number of the same type of pump devices that are provided in parallel, the number of the same type of pump devices that can be arranged in parallel, the number of pump devices that are currently in operation, and the number of pump devices that have failed. By outputting such information to the mobile terminal, the status (overall status) of all the pump devices can be grasped by communicating with one monitoring device or pump device.

Further, when the control board of the pump device includes a position information detection device (for example, a GPS device), the installation position of the pump device can be grasped, and the plurality of pump devices can be controlled in groups according to the positions of the pump devices.

Fig. 17 is a block diagram showing a connection relationship of a plurality of pump devices. In fig. 17, 1-1, 1-4, 2-1, 2-4, 3-1, 3-4 denote gate valves, 1-2 denotes a No. 1 engine pump portion, 2-2 denotes a No. 2 engine pump device portion, 3-2 denotes a No. 3 engine pump device portion, 1-3, 2-3, 3-3 denote check valves, 1-5 denotes a No. 1 engine motor portion, 2-5 denotes a No. 2 engine motor portion, 3-5 denotes a No. 3 engine motor portion, 1-6 denotes a No. 1 engine power conversion device, 2-6 denotes a No. 2 engine power conversion device, 3-6 denotes a No. 3 engine power conversion device, 1-7 denotes a No. 1 engine control substrate, 2-7 denotes a No. 2 engine control substrate, 3-7 denotes a No. 3 engine control substrate, 1-8 denotes a No. 1 engine wireless interface (interface, interface), 2-8 represents the wireless interface of the machine 2, and 3-8 represents the wireless interface of the machine 3.

For example, after data (data items and data contents) to be set is transmitted from a mobile terminal (not shown), the data is written into a storage unit for storing pump control data via wireless interfaces (1-8, 2-8, 3-8) of the pump device. At this time, in order to clarify the object of the transmission data, the identification number of the pump is transmitted together with the data. The wireless interface, memory section are mounted in the control and I/F boards (1-8, 2-8, 3-8) of the pump apparatus.

The mobile terminal desirably includes a display device, and the display on the mobile terminal is not the data content itself, but is converted (for example, 0 → pump stop, 1 → pump operation, etc.) and displayed. In the mobile terminal, when the operation condition or the cause of the failure is acquired, if there is a failure code indicating the content of the failure, for example, the content indicated by the failure code is displayed (for example, if the failure code "E1" is "overcurrent", the "overcurrent" is displayed).

Then, when an instruction to acquire the operation state is issued from the mobile terminal, the operation state data is read out from the storage unit storing the pump operation data through the wireless interface (1-8, 2-8, 3-8) of the pump device, and the read-out data is transmitted to the mobile terminal through the wireless interface.

When the pump is operated from the portable terminal, it is possible to send an instruction to stop the operation or set the frequency of the operation (the number of rotations (number of rotations) of the motor) in the same manner as the data setting. When it is desired to specify a data item relating to the operation state of the pump device, instead of the "instruction' for operation/stop", and to operate the pump device, the data item is set to "operation", and when it is desired to stop the pump device, the data item is set to "stop".

As shown in fig. 17, when there are 3 or more pump apparatuses, the priority may be assigned to the pump apparatus in advance, and the pump apparatus having the highest priority may be used as the master pump apparatus. Alternatively, the priority may be determined in the pump device after the pump device enters the operating state (after power-on), and the pump device with the highest priority may be used as the master pump device (master).

As described above, by providing an interface capable of communicating with the outside, it is possible to easily control the plurality of drive unit controller-integrated pumps without providing a control panel.

Description of the symbols

1 … … pump casing

2 … … casing

3 … … bench (Pump base)

10 … … cover

20 … … cooling jacket

21 … … centrifugal fan

30 … … case for power conversion device

31 … … power conversion device

40 … … noise filter built-in terminal box

50 … … rotating electrical machine (part)

51 … … casing

52L, 52S … … Cooling Fin

54 … … stator (stator, armature)

55 … … rotor (rotor)

56 … … rotating shaft (draft)

60 … … Box for control and I/F base plate

70 … … Box for smoothing capacitor

541 … … cutting part (of iron core)

H … … heat generating part

B … … armature center section

Claims

1. A pump device in which a pump section provided in a pump housing and having an impeller and a rotating motor that rotationally drives the impeller are integrally formed, characterized in that:

the rotating electric machine includes:

a housing having a plurality of cooling fins on an outer periphery thereof;

a cylindrical stator accommodated inside the housing;

a rotor fixed to a rotating shaft of the rotating electrical machine;

a bearing supporting the rotating shaft;

a fan mounted on the rotating shaft;

a power conversion device having a power switching element that supplies a drive current to an armature of the rotating electrical machine;

a control board that controls an operation of the rotating electric machine by the power conversion device; and

a capacitor used in a circuit of the power conversion apparatus,

the power conversion device is directly mounted to a portion of the casing such that heat of a power switching element of the power conversion device is transmitted to the casing, the casing is air-cooled by the fan,

the control substrate and the capacitor are mounted on a part of an outer peripheral surface of the case such that heat generation of the control substrate and the capacitor is transmitted to the case, the case is air-cooled by the fan,

the control substrate and the capacitor are configured on the case differently from a portion on which the power conversion device is mounted.

2. The pump apparatus of claim 1, wherein:

the air from the fan is discharged from a connection portion between the pump portion and the rotating electrical machine to the outside through a cooling fin of the casing located inside a casing covering the casing.

3. The pump apparatus of claim 1, wherein:

and a terminal box having a built-in noise filter, which is attached to a part of a cover covering the outer periphery of the assembly of the rotating electric machine.

4. The pump apparatus of claim 1, wherein:

the power conversion device is attached to a part of the housing such that a center position thereof is shifted from a center position of a stator of the rotating electric machine in a rotation axis direction of the housing.

5. The pump apparatus of claim 1, wherein:

the control board is disposed on the case together with an IF board for communication, differently from a portion on which the power conversion device is mounted.

6. The pump apparatus of claim 5, wherein:

the control substrate and the IF substrate for communication are housed in a case, and the case is impregnated with a resin material.