JP7423488B2 - cover - Google Patents

Description

The present invention relates to a cover that covers a water supply device.

A cover that covers a water supply device including a pump, a pressure tank, a motor, and a control panel is known (for example, see Patent Document 1). The water supply device includes a fan that cools heat sources such as a motor, a control panel, and an inverter. In addition to this cooling fan, in Patent Document 1 and Patent Document 2, an external fan is provided inside the cover for discharging or circulating the air inside the cover. The temperature rise due to this is suppressed.

JP2015-95967A Japanese Patent Application Publication No. 2007-224885

However, if the external fan breaks down while the pump is operating, the flow of air that has been in contact with the heat source and exchanged heat will become stagnant, causing the temperature inside the cover to rise significantly and potentially causing the water supply system to malfunction. .

Therefore, it is an object of the present invention to provide a cover for a water supply device that can suppress a temperature rise inside the cover by a cooling fan of a motor or an inverter that generates airflow as the pump operates.

In one aspect, a cover is provided that covers a water supply device including a motor pump and a control panel disposed above the motor pump. The motor pump includes a pump for transporting liquid, a motor for driving the pump, an inverter through which a drive shaft of the motor passes, and a cooling fan fixed to the drive shaft. Accordingly, the cooling fan generates an airflow flowing in the axial direction of the drive shaft, and the motor and the inverter are cooled by the airflow, and the cover has a first opening adjacent to the cooling fan and the pump. a second opening adjacent to the pump, and at least a portion of the first opening and the second opening are opposed to each other with the motor pump in between.

In one aspect, one of the first opening and the second opening facing each other with the motor pump in between is an intake port that introduces air sucked by the cooling fan into the cover; The other is an exhaust port for discharging the air discharged by the cooling fan to the outside of the cover, the cover includes an intake port side wall member in which the intake port is formed, and the intake port side wall member is configured to It has a recessed portion in which an air intake port is formed, and the recessed portion is arranged at a position lower than the control panel.
In one aspect, the suction port of the cooling fan faces the adjacent first opening, and the suction port formed in the recess is the first opening, and the suction port of the cooling fan is configured to prevent foreign matter from entering the cooling fan. It has a slit shape that restricts access.
In one aspect, the intake port has a slit shape that restricts foreign matter from accessing the cooling fan, and the slit-shaped opening is formed only in the intake port side wall member of the side surface of the cover. There is.

In one aspect, at least a portion of the first opening and the second opening that face each other with the motor pump in between are formed at a position lower than the control panel, and all sides of the cover The only side surface having an opening formed at a position lower than the control panel is the side surface in which the first opening and the second opening are formed.
In one aspect, one of the first opening and the second opening facing each other with the motor pump in between is an intake port for introducing air sucked by the cooling fan into the cover. , the water supply device covered by the cover includes a liquid transfer device extending along the control panel to the pump disposed downstream of the inverter and/or the motor in the flow direction of the air generated by the cooling fan. A pipe is connected to the pump and/or the liquid transfer pipe, and the pump and/or the liquid transfer pipe are water passing parts through which the liquid to be transported by the pump passes, and the air generated by the cooling fan as the pump operates is connected to the inverter. And/or after being heated by the motor, it is cooled in contact with the water passage section, and the cooled air flows along the liquid transfer pipe, thereby cooling the control panel.
In one aspect, one of the first opening and the second opening, which are opposed to each other with the motor pump interposed therebetween, allows air flowing along the motor pump generated by the cooling fan to flow through the motor pump. It is an exhaust port for discharging outside the cover, and is provided above the exhaust port with an upper exhaust port for discharging air staying at a position higher than the water supply device to the outside.

In one aspect, a plurality of frames arranged around the motor pump, a plurality of wall members that are side surfaces of the cover, a roof member that is a ceiling surface of the cover, and a connection member fixed to the roof member. and, the wall member and the connecting member are connected to each other via the frame, and the upper exhaust port is a gap formed between the wall member and the roof member by the connecting member. .
In one aspect, one of the first opening and the second opening is an exhaust port that discharges air generated by the cooling fan to the outside of the cover along the axial direction, and the At least a portion of the exhaust port forms an opening located outside an outer diameter of a pump casing of the pump.
In one aspect, the water supply device has fins extending in the axial direction from the inverter to the motor, and one of the first opening and the second opening is connected to the cooling fan. This is an exhaust port for discharging the air generated by the fins to the outside of the cover along the fins.

In one aspect, the water supply device includes a base that supports the motor pump, and at least a portion of the lower end of the cover is located at a higher position than the base.
In one aspect, the water supply device includes a pressure tank arranged above the motor pump and in line with the control panel.
In one embodiment, the control panel includes an operating panel disposed facing in one direction, the pressure tank includes an air enclosure, and the cover includes the first opening and/or A window portion for exposing the operation panel and/or the air sealing portion is provided above the second opening.
In one embodiment, the motor pump includes a plurality of frames arranged around the motor pump, and a plurality of wall members attached to the plurality of frames, and any one of the plurality of wall members is connected to the first opening. Alternatively, the second opening is formed on a side surface of the cover, and each of the plurality of wall members is removable and/or replaceable.

To provide a cover for a water supply device capable of suppressing a temperature rise inside the cover by smoothly discharging air heat exchanged in contact with a motor pump.

It is a perspective view showing one embodiment of a water supply device. It is a top view showing one embodiment of a water supply device. It is a front view showing one embodiment of a water supply device. It is a side view showing one embodiment of a water supply device. It is a figure which shows the cover which covers a water supply device. 6 is a view seen from the direction of line A in FIG. 5. FIG. FIG. 3 is a cross-sectional view of the cover. It is a figure which shows other embodiment of a window part. FIG. 3 is a perspective view showing the structure of the cover. FIG. 3 is a perspective view showing the structure of the cover. FIGS. 11(a) and 11(b) are diagrams showing a connecting member that connects the roof member and the frame. FIG. 7 shows the cover with the wall member removed. It is a figure which shows the modification of a cover. It is a figure which shows the modification of a cover. It is a figure showing one embodiment of an attachment and detachment structure. It is a figure showing other embodiments of attachment and detachment structure. It is a flow diagram for explaining the maintenance method of a water supply device. 18 is a flow diagram for explaining details of step 1 in FIG. 17. FIG. 18 is a flow diagram for explaining details of step 3 in FIG. 17. FIG.

Embodiments of the present invention will be described below with reference to the drawings. In the drawings described below, the same or corresponding components are given the same reference numerals and redundant explanations will be omitted. In the plurality of embodiments described below, the configuration of one embodiment that is not particularly described is the same as that of the other embodiments, and thus the redundant explanation will be omitted.

FIG. 1 is a perspective view showing one embodiment of a water supply device 1. FIG. FIG. 2 is a plan view showing one embodiment of the water supply device 1. FIG. 3 is a front view showing one embodiment of the water supply device 1. FIG. 4 is a side view showing one embodiment of the water supply device 1. First, an embodiment of a water supply device covered with a cover according to the present invention will be described using FIGS. 1 to 4 (partially schematic diagrams).

The water supply device 1 includes a plurality of (in this embodiment, two) pumps 2A, 2B, a plurality of (in this embodiment, two) electric motor assemblies 30A, 30B, and a control unit that controls the pump 2. 9 is housed therein, and a pressure tank 90. The number of pump and motor assemblies is not limited to this embodiment.

The pumps 2A and 2B have the same structure or a structure that can be arranged symmetrically. Similarly, the electric motor assemblies 30A and 30B have the same structure or a structure that can be arranged symmetrically. Therefore, hereinafter, pumps 2A and 2B may be simply referred to as pump 2 without distinction, and motor assemblies 30A and 30B may be simply referred to as electric motor assembly 30 without distinction.

The electric motor assembly 30 is a mechanical device having an integrated structure in which the inverter 5 is built-in. As shown in FIG. 4, the electric motor assembly 30 includes a drive shaft 11, a motor 3 (3A, 3B) that is a drive machine for the pump 2, an inverter 5 that is a variable speed means for the pump 2, and an inverter 5 adjacent to the drive shaft 11. The cooling fan 25 is arranged as shown in FIG. 1 and fixed to the end of the drive shaft 11. The cooling fan 25, the inverter 5, and the motor 3 are arranged in series in the axial direction of the drive shaft 11, and the pump 2 is located downstream of the inverter 5 and/or the motor 3 in the flow direction of the air generated by the cooling fan 25. is placed. In the embodiment shown below, in the water supply device 1, the cooling fan 25 side is referred to as the front side, and the pump 2 side is referred to as the rear side, as shown by the arrow in FIG.

The motor 3 (3A, 3B) includes a motor casing 4 (4A, 4B) that accommodates a driving part (rotor, stator, etc.) of the motor 3. The inverter 5 includes an inverter case 6 (6A, 6B) that houses the inverter section 20.

The cooling fan 25 is provided with a fan cover 35 (35A, 35B) that covers the cooling fan 25. The fan cover 35 has a mesh portion 36 (see FIG. 1) that is an intake port for the cooling fan 25, and air sucked through the mesh portion 36 by rotation of the cooling fan 25 faces the outer peripheral surface of the inverter cover 6. The air is exhausted from a gap 35b (see FIG. 4) formed between the fan cover 35 and the inner circumferential surface of the fan cover 35.

As shown in FIG. 4, the pump 2 includes an impeller 20 fixed to an end of the drive shaft 11, and a pump casing 21 that accommodates the impeller 20. The drive shaft 11 is rotated by the motor 3, and the impeller 20 rotates together with the drive shaft 11 within the pump casing 21. Motor casing 4 is fixed to pump casing 21. A suction pipe 22 is connected to the suction port 21a of the pump casing 21, and a discharge pipe 23 (23A, 23B) is connected to the discharge port 21b of the pump casing 21. The suction pipe 22 and the discharge pipe 23 may be collectively referred to as a liquid transfer pipe.

The control unit 9 starts operating the pump 2 based on predetermined starting conditions such as a decrease in discharge pressure. Specifically, the control unit 9 instructs the inverter 5, which is a variable speed means of the pump 2, to operate. When the impeller 20 rotates as the pump 2 operates, liquid is sucked into the pump casing 21 through the suction pipe 22. Velocity energy is imparted to the liquid by the rotation of the impeller 20, and when the liquid passes through the volute chamber within the pump casing 21, the velocity energy is converted into pressure energy, and the pressure of the liquid is increased. The pressurized liquid is transferred to the outside through the discharge pipe 23. For automatic operation, the control unit 9 controls the pump 2 using estimated terminal pressure constant control and discharge pressure constant control. Specifically, the rotation speed is commanded to the inverter 5 in order to make the discharge pressure of the pump 2 a predetermined target pressure. When the control unit 9 detects a small amount of water using a water meter (not shown), the control unit 9 stops the pump 2. In addition, it is preferable that the control unit 9 controls the pumps 2 by rotation or by controlling the number of pumps.

The control panel 10 is supported by a support member 65 placed across the motor casing 4 and is placed above the motor casing 4 . The control panel 10 is provided with an operation panel 12 that is a display and operation section of the water supply device 1, and this operation panel 12 is placed at a higher position than the motor casing 4 in order to improve operability by the operator. has been done. The control panel 10 shown in FIG. 1 is arranged so that the operation panel 12 faces the front side of the water supply device 1, and is arranged so as to face the left side in FIGS. 2 and 3. In this way, it is preferable that the direction of the control panel 12 of the control panel 10 can be changed at the installation site. Thereby, the operability for the operator can be improved. The operation panel 12 also includes a communication section 12a that can communicate with an external display.

The water supply device 1 further includes a base 60 on which the pump 2, motor casing 4, and control panel 10 are placed. The support member 65 includes legs 66 fixed to the base 60 and extending upward from the surface of the base 60, and a pedestal 67 fixed to the legs 66 and on which the control panel 10 is placed. There is. The leg portion 66 extends above the motor casing 4 , and a pedestal 67 fixed to the leg portion 66 is arranged above the motor casing 4 . The pedestal 67 extends in a direction parallel to the surface of the base 60 (that is, in the horizontal direction), and has a size on which the control panel 10 can be placed.

As shown in FIG. 3, at least one leg 66 is disposed between adjacent motor casings 4A, 4B. In this embodiment, the water supply device 1 further includes a pressure tank 90 that holds the discharge pressure of the pumps 2A and 2B. Pressure tank 90 may be arranged above at least one of pump 2A and motor casing 4A, or above at least one of pump 2B and motor casing 4B. Although the pressure tank 90 is schematically drawn, the pressure tank 90 is connected to the discharge pipe 23 or the collection pipe 24.

The pressure tank 90 has a built-in rubber Prada in a pressure-resistant container, and when the discharge pressure of the pump 2 increases, air outside the Prada is compressed, and water is stored in a pressurized state. Further, as the pressure inside the discharge pipe 23 decreases, the compressed air expands and pushes out the stored water to the discharge pipe 23. In this way, even if the pump 2 is stopped, water is supplied from the pressure tank 90 to the discharge pipe 23 for a while.

In this embodiment, the pressure tank 90 is placed on a pedestal 67. Since the support member 65 can place not only the control panel 10 but also the pressure tank 90 above the motor casing 4 (that is, the motor casings 4A, 4B), the space for placing the control panel 10 and the pressure tank 90 can be saved. It is not necessary to provide it on the base 60. In this way, in the water supply device 1 of this embodiment, the pressure tank 90 is arranged above the motor assemblies 30A, 30B. However, in one embodiment, pressure tank 90 may be located centrally or to the side of motor assemblies 30A, 30B.

In this embodiment, the pedestal 67 has a wide shape extending in the width direction of the base 60, and is disposed above both the motor casings 4A and 4B. Here, the width direction of the base 60 is defined as a direction perpendicular to the longitudinal direction of the base 60. The frame 67 having such a wide shape can support both the pressure tank 90 and the control panel 10. The pressure tank 90 is arranged above one of the motor casings 4A, 4B, and the control panel 10 is arranged above the other of the motor casings 4A, 4B. In this embodiment, the pressure tank 90 is arranged above the second motor casing 4B, and the control panel 10 is arranged above the first motor casing 4A.

As shown in FIGS. 1 to 4, the water supply device 1 includes a collection pipe (discharge header) 95 connected to the discharge pipes 23A and 23B. Each of the discharge pipes 23A and 23B has its opening facing upward and communicates with the collection pipe 95. Specifically, each of the discharge pipes 23A and 23B is connected to a collective pipe 95. The collective pipe 95, which is a liquid transfer pipe, extends parallel to the arrangement direction of the pumps 2A and 2B (that is, in the left-right direction in the drawing), and has closing lids 96 at both longitudinal ends (both left and right ends of the collective pipe 95 in the paper). It has discharge ports 95a and 95b which can be closed by. Note that both left and right ends of the collective pipe 95 mean an end of the collective pipe 95 on the discharge port 95a side and an end on the discharge port 95b side.

In this embodiment, the closing lid 96 closes the discharge port 95a of the collective pipe 95, but may close the discharge port 95b of the collective pipe 95. Arrow F in FIG. 3 indicates the discharge direction of the water supply device 1. The discharge ports 95a and 95b of the collective pipe 95 have the same shape, and the closing lid 96 can be fixed to both of the discharge ports 95a and 95b of the collective pipe 95.

The control panel 10 and the pressure tank 90 are arranged on the pedestal 67, and the collective piping 95 is adjacent to the control panel 10 and the pressure tank 90. More specifically, either the control panel 10 or the pressure tank 90 is adjacent to the discharge port 95a that is closed by the closing lid 96, and the other of the control panel 10 or the pressure tank 90 is closed. It is adjacent to the discharge port 95b which is not connected to the discharge port 95b. By mounting the control panel 10 and the pressure tank 90 on the pedestal 67 in this manner, the distance between the pump 2A and the pump 2B can be reduced. As a result, the overall size of the water supply device 1 can be reduced.

Generally, when a water supply device is operated outdoors, the water supply device is covered with an outdoor cover. The inside of the cover that covers the water supply device may become hot due to the combination of heat generated by the components of the water supply device and external factors such as direct sunlight. Therefore, in addition to a cooling fan that cools the heat generating sources such as the motor, control panel, and inverter, an external fan is placed inside the cover, and the airflow from the external fan is used to cool the cover. Promote internal air circulation and evacuation. However, if this external fan fails, the flow of air inside the cover will be stagnation, and the temperature inside the cover will rise significantly, potentially causing the device to malfunction. Therefore, external fans require regular maintenance and replacement. This is because, in the worst case, the pump may stop operating and water cannot be supplied. Therefore, in the water supply device 1 of the present embodiment, a cover that can suppress the temperature rise inside the cover by the cooling fan 25 that cools each component of the heat generation source will be described below with reference to the drawings. Thereby, maintenance frequency can be reduced and failures can be suppressed.

FIG. 5 is a diagram showing a cover 100 that covers the water supply device 1. FIG. 6 is a view seen from the direction of line A in FIG. 5. FIG. 7 is a cross-sectional view of the cover 100. As shown in FIGS. 5 to 7, the water supply device 1 is covered with a cover 100.

As shown in FIGS. 5 and 6, the front, back, left, and right side walls of the cover 100 are formed by wall members 110, 112, 122, and 123, respectively. The wall members 110, 112, 122, and 123 are arranged on the front side, rear side, left side, and right side of the water supply device 1, respectively. The wall members 110, 112, 122, and 123 are attached to the frame 120 by detachable structures (fasteners 152, hooks 160, etc.) that will be described in detail later. The ceiling surface of the cover 100 is formed by a roof member 125. The wall members 110, 112, 122, 123 and the roof member 125 are each attached to a frame 120 (see FIG. 9), the details of which will be described later. The wall members 110, 112, 122, 123 and the roof member 125 are made of metal or resin.

The cover 100 has an air intake port 101 (first opening, see FIG. 5) adjacent to the mesh portion 36 that is the air intake port of the cooling fan 25 of each electric motor assembly 30A, 30B, and a cooling fan 25 in the wall member 110. The exhaust port 102 (second opening, see FIG. 6) adjacent to the pump 2 (more specifically, the pumps 2A and 2B) located on the most downstream side of the airflow generated by the motor pump along the motor pump. , is equipped with. In this embodiment, the combination of the pump 2 and the electric motor assembly 30 is referred to as a "motor pump."

At least a portion of the intake port 101 and the exhaust port 102 face each other across the longitudinal direction of the motor pump with the pump 2 and the cooling fan 25 disposed at both ends. In the embodiment shown in FIG. 5, the number of intake ports 101 corresponding to the number of cooling fans 25 is provided, but the invention is not limited to this, and the cover 100 may be provided with at least one intake port 101. . In one embodiment, the water supply device 1 has a single intake port 101 arranged adjacent to the intake ports of all the cooling fans 25 . Further, like the intake ports 101, the number of exhaust ports 102 is not limited, and may be one or more.

In this way, by arranging the intake port 101 and the exhaust port 102 to face each other with the motor pump in between, the air taken into the cover 100 from outside the cover 100 by the cooling fan 25 can sufficiently absorb the heat generating parts of the water supply device 1. Furthermore, since most of the air whose temperature has increased due to the cooling can be smoothly discharged from the exhaust port 102 to the outside of the cover 100, the temperature rise inside the cover 100 is suppressed, and as a result, the water supply device 1 Temperature abnormalities are prevented. Further, according to the present embodiment, the temperature rise inside the cover 100 can be sufficiently suppressed using only the cooling fan 25, and an external cooling fan can be made unnecessary.

In this embodiment, since the airflow generated by the cooling fan 25 flows toward the pump 2, the intake port 101 is adjacent to the cooling fan 25, and the exhaust port 102 is adjacent to the pump 2. However, in one embodiment, when an axial airflow is formed from the pump 2 side to the cooling fan 25 side, the intake port 101 is adjacent to the pump 2 and the exhaust port 102 is adjacent to the cooling fan 25.

As shown in FIG. 5, the wall member 110 has a recess 115 in which the air intake port 101 is formed, and the recess 115 is located at a lower position than the control panel 10. This prevents the air entering from the intake port 101 from coming into contact with the control panel 10 and being disturbed before being sucked into the cooling fan 25, and the cooling fan 25 can efficiently suck in outside air. Furthermore, with this arrangement, the control panel 10 can be protected from rain and wind entering through the air intake port 101.

The intake port 101 has a slit shape. The intake port 101 having such a slit shape restricts foreign objects such as human fingers and dirt from accessing the cooling fan 25, and prevents the control panel 10 from getting wet due to intrusion of wind and rain. be able to. That is, in this embodiment, the mesh portion 36 that is the suction port of the cooling fan 25 faces the adjacent suction port 101, and the suction port 101 formed in the recessed portion 115 prevents foreign matter from entering the cooling fan 25. It has a slit shape that restricts access. Since the intake port 101 and the intake port of the cooling fan 25 face each other, the cooling fan 25 can efficiently suck outside air even through the intake port 101 having a slit shape. However, the suction port of the cooling fan 25 only needs to be adjacent to the suction port 101 so as to take in outside air, and in one embodiment, the suction port 101 and the suction port of the cooling fan 25 do not have to face each other.

Further, the only opening in the cover 100 that has a slit shape is the intake port 101. That is, the slit-shaped opening is formed only in the wall member 110 in which the air intake port 101 is formed among the side surfaces (wall members 110, 112, 122, 123) of the cover 100. The wall members 122 and 123 parallel to the axis of the motor pump have no openings adjacent to the motor pump. Thereby, the cooling fan 25 can blow the cold air taken in from the outside to the exhaust port 102 without escaping through the openings on the wall members 122, 123 side, making it possible to more effectively suppress the temperature rise. In addition, the suction pipe 22 penetrates the exhaust port 102 of the wall member 123 (see FIG. 7), and even if a foreign object enters the cover 100 from the exhaust port 102, the foreign object will prevent the rotation of the water supply device 1. It does not necessarily have to be in the shape of a slit, since there is a low risk of it coming into contact with the body. Note that in this embodiment, the intake port 101 has a slit shape that extends laterally. However, the slit shape of the intake port 101 may be any shape that makes it difficult for the supposed foreign matter to pass through, and may be, for example, a lattice shape, a vertical slit, a punching, or a combination thereof.

Here, the mechanism for suppressing the temperature rise inside the cover 100 of this embodiment will be described in more detail using FIG. 7. As shown in FIG. 7, since the intake port 101 faces the mesh portion 36 which is the intake port of the cooling fan 25, when the cooling fan 25 rotates with the operation of the coaxial motor pump, the outside of the cover 100 Air passes through the intake port 101 and is sucked into the cooling fan 25 (see arrow FS1 in FIG. 7). In other words, the cooling fan 25 can preferentially suck in colder outside air than air in the upper part of the cover 100 that becomes hot due to direct sunlight or the like.

Further, as shown in FIG. 5, at least a portion of the lower end of the cover 100 is located higher than the base 60, and the lower end 115a of the recess 115 is located higher than the lower end 110a of the wall member 110. It is located. With this arrangement, as shown in FIG. 7, a gap is formed between the ground FL and the lower end 115a of the recess 115 for taking in air. Air outside the cover 100 flows into the cover 100 through the gap as shown by arrow FS2, and can cool the components of the water supply device 1 more actively. In particular, by providing a gap between the lower end 115a of the recess 115 and the ground FL, low-temperature air around the ground FL can be taken into the cover 100, so that the temperature inside the cover 100 can be increased more actively. can be suppressed. In one embodiment, the distance between the lower end 115a and the lower end 110a is preferably a size (for example, about 15 mm) that allows a cable (mainly a power line) wired to the control panel 10 to pass through. As a result, the gap formed between the ground FL and the lower end 115a of the recess 115 for taking in air can also be used as a cable lead-in port, so that the degree of freedom in wiring can be improved.

Next, the air sucked into the cooling fan 25 becomes an airflow flowing in the axial direction of the drive shaft 1 as shown by the arrow F1, cooling the inverter 5 and the motor 3 in this order, and the temperature rises due to heat exchange during the cooling. The air passes through the exhaust port 102 as shown by arrow FD1 and is smoothly discharged to the outside. In this embodiment, at least a portion of the intake port 101 and the exhaust port 102 are formed at a position lower than the control panel 10, and all the side surfaces (wall members 110, 112, 122, 123) of the cover 100 are formed at a lower position than the control panel 10. Among them, the only side surface having an opening formed at a position lower than the control panel 10 is the side surface where the intake port 101 and the exhaust port 102 are formed (that is, the wall members 110, 112). There is no opening formed at a position lower than the control panel 10. Thereby, the airflow shown by the arrow F1 can be prevented from being disturbed by the airflow flowing in and out from the wall members 122 and 123, and can reach the pump 2 smoothly. Therefore, inverter 5 and motor 3 can be efficiently cooled.

Here, it is preferable that the electric motor assembly 30 has fins 6a and 4a extending from the inverter 5 to the motor 3 along the axis CL direction. The fins 6a (6Aa, 6Ba) are protrusions in the axial and radial direction formed on the surface of the inverter case 6 (6A, 6B). The fins 4a (4Aa, 4Ba) are protrusions in the axial radial direction formed on the surface of the motor casing 4 (4A, 4B). Furthermore, the fins 6a and 4a extend continuously from the inverter 5 to the motor 3. Therefore, the airflow of the cooling fan 25 is guided more actively toward the exhaust port 102 by the fins 6a and 4a.

In this way, the air whose temperature has increased due to heat exchange due to cooling is allowed to flow linearly to the outside of the cover 100, so that it can be discharged outside the cover 100 in the shortest possible time. Thereby, a rise in temperature within the cover 100 can be suppressed. In particular, in the water supply unit 1 of this embodiment, the bottom surfaces of the inverter 5, motor 3, and control panel 10, which are heat sources, are cooled by the airflow of the cooling fan 25, as shown by the arrow F1. Therefore, by discharging most of the air heat-exchanged by the cooling without circulating it within the cover 100, the temperature rise within the cover 100 can be more effectively suppressed.

At least a portion of the exhaust port 102 for discharging heat-exchanged air to the outside of the cover 100 is located at a position radially outer than the outer diameter of the pump 2 (more specifically, the pump casing 21). Preferably, it has an opening. With this shape, the air generated by the rotation of the cooling fan 25 can be linearly discharged to the outside through the exhaust port 102, thereby ensuring the shortest flow path.

In this way, the cover 100 includes the wall member 110 (intake port side wall member, see FIG. 5) in which the intake port 101 is formed, the wall member 112 (exhaust port side wall member, see FIG. 6) in which the exhaust port 102 is formed. ). These wall members 110 and 112 are arranged facing each other with the motor pump in between. Thereby, a rise in temperature within the cover 100 can be suppressed.

Further, the cover 100 can be provided with an upper exhaust port 103 at its upper portion for discharging air near the roof member 123 (ceiling surface). By providing the upper exhaust port in this way, it is possible to prevent air warmed by direct sunlight from remaining above the water supply device 1 within the cover 100.

Furthermore, as described above, the pump 2 is connected to liquid transfer pipes (the suction pipe 22, the discharge pipe 23, and the collection pipe 95). In the water supply device 1 of this embodiment, as shown in FIGS. 1 to 4, the discharge pipes 23A and 23B extend upward, and the collective pipe 95 extends in the left-right direction along the side surface of the control panel 10. The pump 2 and/or the liquid transfer pipe are water passage parts through which the liquid to be transported by the pump 2 passes, and are further downstream of the inverter 5 and/or the motor 3 in the direction of air flow caused by the rotation of the cooling fan 25. It is located. With such an arrangement, a part of the air heated by the inverter 5 and/or the motor 3 is cooled by contacting the pump 2 (more specifically, the pump casing 21) and/or the liquid transfer pipe, At least a portion of the cooled air flows upward along the liquid transfer tube, as shown by arrow F2, cooling the sides of the control panel 10 adjacent to the liquid transfer tube.

The air that has cooled the control panel 10 is then discharged to the outside of the cover 100 through the upper exhaust port 103 (arrow FD2). Furthermore, in this embodiment, the roof member 125 is inclined at a predetermined angle with respect to the horizontal direction so as to be higher toward the upper exhaust port 103. Therefore, the upper exhaust port 103 communicating with the highest position of the roof member 125 can more effectively exhaust warm air to the outside of the cover 100.

That is, in this embodiment, air that has flowed into the cover 100 through the intake port 101 is discharged to the outside of the cover 100 through the following two routes. The first path is a path through which the inverter case 6, motor casing 4, pump casing 21, and exhaust port 102 flow in the order indicated by arrow F1 and arrow FD1. The second path is a path through which the inverter case 6, the motor casing 4, the pump casing 21 and/or the liquid transfer pipe, and the upper exhaust port flow in this order, as indicated by arrows F1, F2, and FD2. In this way, in the cover 100 of this embodiment, the air that flows in from the intake port 101 passes through the first path and the second path and is quickly discharged to the outside, so that the temperature rise inside the cover 100 can be more efficiently reduced. can be suppressed to Note that if the water supply device 1 can continue supplying water while suppressing the temperature rise within the cover 100, both the first path and the second path are not necessary. Further, in one embodiment, the upper exhaust port 103 may not be provided, and only the exhaust port 102 may be used.

Here, in this embodiment, the recess 115 disposed in the wall member 110 at a lower position than the control panel 10 allows the air flowing by the rotation of the cooling fan 25 to flow through the gap between the control panel 10 and the electric motor assembly 30. can pass through at high velocity. Therefore, the motor assembly 30 and the control panel 10 are efficiently cooled by the air flowing at high speed.

Further, in the water supply device 1 of this embodiment, the pressure tank 90 protrudes toward the wall member 110 side rather than the fan cover 35. The recessed portion 115 has a concave shape toward the fan cover 35 and is adjacent to (more specifically, close to) the fan cover 35 . With this structure, the gap between the air intake port 101 and the fan cover 35 can be minimized regardless of the arrangement and size of other parts (for example, the pressure tank 90 and the control panel 10) that make up the water supply device 1. The cooling fan 25 can be made small, and the cooling fan 25 can take in low-temperature air (that is, not heated by the components of the water supply device 1) existing outside the cover 100 through its rotation.

Next, the structure of the wall members 110, 112, 122, 123 will be explained in detail. The water supply device 1 is sometimes installed in a narrow space in the city center, and there is a desire to rearrange the parts of the water supply device 1 to suit the installation site. Therefore, as described above, the water supply device 1 of the present embodiment includes the operation panel 12 that can be arranged in any direction, front, rear, left, or right, and the discharge ports 95a, 95b that can correspond to either the left or right discharge direction. A cover 100 that can accommodate the rearrangement of these parts is desired. Further, for the water supply device 1 that requires regular maintenance, a cover 100 that takes maintainability into consideration is desired.

Therefore, the wall members 110, 112, 122, and 123 of this embodiment each include a plurality of openings. The opening is an opening for inserting a window that allows access to the operation panel 12 disposed in either the front, rear, left, or right direction, or a pipe connected to either of the discharge ports 95a, 95b. These openings can be closed with a closing member (closing lid) if necessary. Thereby, the cover 100 can flexibly respond to rearrangement of parts of the water supply device 1 performed at the installation site.

As shown in FIG. 5, the wall member 110 includes a window 116 formed above the recess 115. As shown in FIG. The operation panel 12 of the control panel 10 is exposed through this window portion 116. Therefore, the operator can access the operation panel 12 through the window 116. During normal operation of the water supply device 1, the window portion 116 may be covered with a transparent plate (for example, an acrylic plate) (not shown) to prevent rain and wind from entering. Further, it is preferable that the communication section 12a of the operation panel 12 can be accessed using an external display while the window section 116 is closed with a transparent plate. Therefore, the window portion 116 preferably has a size that allows communication with an external display device (not shown) located at a remote location.

FIG. 8 is a diagram showing another embodiment of the window section 116. As shown in FIG. 8, the pressure tank includes an air sealing part 90a for injecting and sealing air into the outside of Prada (not shown) inside. In the embodiment shown in FIG. 8, the window portion 116 has a wide shape extending parallel to the arrangement direction of the control panel 10 and the pressure tank 90 so that the air sealing portion 90a can be exposed.

The control panel 10 and pressure tank 90 are arranged above the motor pump. As described above, the operation panel 12 of the control panel 10 and the air sealing section 90a of the pressure tank 90 can also be arranged facing in the same direction. Therefore, in this embodiment, the window portion 116 has a shape that allows both the operation panel 12 of the control panel 10 and the air sealing portion 90a of the pressure tank 90 to be exposed. However, the window portion 116 only needs to be able to expose the air sealing portion 90a of the pressure tank 90, and the window portion for the operation panel 12 of the control panel 10 and the window portion for the air sealing portion 90a of the pressure tank 90 are provided separately. Good too.

If the air enclosure 90a can be exposed through the window 116, the operator can access the air enclosure 90a through the window 116. Among the parts of the water supply device 1, the pressure tank 90 is one of the parts that requires the most frequent maintenance. In this manner, the operator can frequently carry out maintenance such as checking the sealing pressure of the pressure tank 90 and filling the pressure tank 90 with air from the window portion 116, so that the cover 100 can shorten the maintenance time.

Further, by exposing both the operation panel 12 and the air sealing section 90a through the window section 116, the operator can access the operation panel 12 and the air sealing section 90a at the same time through the window section 116. As a result, the operator can perform maintenance and confirmation of the pressure tank 90 while operating the operation panel 12. Maintenance of the pressure tank 90 includes measuring the pressure inside the pressure tank 90 and replenishing air. The operator can maintain the pressure tank 90 while stopping the operation of the pump 2, checking the pressure display, etc. Further, the operator can visually check the water supply device 1 inside the cover 100 through the window 116 and monitor the status of the water supply device 1 (for example, water leakage, etc.).

As shown in FIG. 5, the wall member 123, which is the right side of the cover 100, has an opening 123b through which the outlet 95a of the collective pipe 95 is exposed, and a window 123c through which the operation panel 12 of the control panel 10 can be exposed. It is equipped with In the embodiment shown in FIG. 13, which will be described later, the pressure tank 90 is arranged at a position exposed from the window 123c, but in the water supply device 1, the position of the control panel 10 and the position of the pressure tank 90 are exchanged, If the operation panel 12 is arranged so as to face the right side, the operation panel 12 of the control panel 10 can be exposed through the window portion 123c.

Similarly, as shown in FIG. 6, the wall member 122 on the left side has an opening 122b through which the outlet 95b of the collective pipe 95 is exposed, and a window 122c through which the operation panel 12 of the control panel 10 can be exposed. It is equipped with

The control panel 10 has a substantially cubic shape, and is placed on a pedestal 67 so that the direction of the operation panel 12 can be changed in all directions (that is, front, rear, left, and right directions). Moreover, a window corresponding to the operation panel 12 is formed at least on a surface of the wall members 110, 112, 122, 123 that faces the direction in which the operation panel 12 can be changed. Therefore, the operator can freely change the orientation of the operation panel 12 according to the installation environment of the water supply device 1. In order to prevent rain and wind from entering the cover 100, it is desirable to close a window formed in the wall member (opening 123c in FIG. 5, opening 122c in FIG. 6) with a closing member 126.

Further, one of the discharge ports 95a and 95b of the collective pipe 95 is closed with a closing lid 96. Therefore, in order to prevent rain and wind from entering the cover 100, it is desirable to close the opening (opening 122b in FIG. 6) adjacent to the closing lid 96 with a closing member (closing member 127 in FIG. 6).

Next, the disassembly and assembly structure of the cover 100 will be described in detail. The cover 100 has a structure in which the side surfaces and the ceiling surface of the cover 100 can be respectively removed. With the structure shown below, the cover 100 allows side and/or ceiling surfaces to be easily removed during maintenance of the water supply device 1, thereby reducing maintenance time.

FIG. 9 is a perspective view showing the structure of the cover 100. FIG. 9 shows the cover 100 with all side and ceiling surfaces removed. As shown in FIG. 9, the cover 100 includes a plurality of frames 120 to which wall members forming side surfaces are attached. The frame 120 has a fixing hole 151 into which a fastener 155 can be inserted and a hook hole 161 into which a hook 160 can be hooked. Further, it is preferable that the frame 120 is fixed to the base 60.

In the embodiment shown in FIG. 9, the cover 100 includes frames 120 at the four corners, but the number of frames 120 is not limited to the embodiment shown in FIG. Depending on the installation environment of the water supply device 1, an arbitrary number of frames 120 may be provided. In this embodiment, the plurality of frames 120 have the same shape.

FIG. 10 is a perspective view showing the structure of the cover 100. FIG. 10 shows the cover 100 with the side surfaces attached and the top surface removed. As shown in FIG. 10, a plurality of wall members 110, 112, 122, 123 surrounding the water supply device 1 are attached to these frames 120.

Preferably, wall member 122 and wall member 123 have the same structure. With such a structure, these wall members 122 and 123 can be used in common, and as a result, the number of parts can be reduced and the manufacturing cost of the cover 100 can be reduced.

Each of the wall members 110, 112, 122, 123 is replaceable with other wall members having a different construction. For example, when the water supply device 1 is installed in a high temperature region, a wall member in which a large-sized exhaust port 102 (and/or intake port 101) is formed is used. Conversely, when the water supply device 1 is installed in a cold region, a wall member in which the exhaust port 102 (and/or the intake port 101) having a small size is formed is used.

In this way, since the cover 100 is composed of a combination of the frame 120 and the wall members 110, 112, 122, 123, the wall members 110, 112, 122, 123 are replaced one by one while leaving the frame 120. be able to. As a result, various types of wall members 110, 112, 122, 123 can be easily attached depending on the installation environment of the water supply device 1.

Furthermore, the combination of the frame 120 and the wall members 110, 112, 122, 123 can improve the overall strength of the cover 100, and can improve durability. Furthermore, even if the cover 100 is made lighter by reducing the thickness of the wall members 110, 112, 122, 123 that are removed during maintenance, the overall strength of the cover 100 can be maintained by the frame 120. In other words, since the cover 100 maintains its overall strength through the frame 120, it is possible to reduce the weight and improve maintainability.

Since the cover 100 has a structure in which the wall members 110, 112, 122, and 123 are attached to the frame 120, an operator can attach the wall members 110, 112, 122, and 123 based on the position of the frame 120. can. As a result, the worker can easily position the wall members 110, 112, 122, and 123 for attachment, and can shorten the time required for assembly and disassembly work.

The cover 100 further includes a roof member 125 disposed above the motor pump (more specifically, the water supply device 1). The roof member 125 is inclined at a predetermined angle with respect to the horizontal direction (see, for example, FIG. 8). Therefore, liquid such as rain that falls on the roof member 125 flows down on the roof member 125. As a result, no liquid accumulates on the roof member 125.

Further, if the roof member 125 extends in the horizontal direction, there is a possibility that the worker places an object such as a tool box on the roof member 125. However, if an object is placed on the roof member 125, the roof member 125 may be damaged, and as a result, there is a risk that the roof member 125 will rust or corrode. In this embodiment, since the roof member 125 is sloped, the worker can recognize that this is not a place to place objects, and can prevent objects from being placed on the roof member 125. can.

Here, FIG. 11(a) and FIG. 11(b) are diagrams showing a connecting member that connects the roof member 125 and the frame 120. As shown in FIGS. 11(a) and 11(b), the roof member 125 is connected to the frame 120 by a connecting member 130. In one embodiment, connecting member 130 is secured to roof member 125 by means such as welding.

As shown in FIG. 11(a), the connecting member 130 has an L-shape. The connecting member 130 extends along the roof member 125 and is fixed to a fixed part 130a fixed to the roof member 125, a bent part 130b bent in the vertical direction along the frame 120 from the fixed part 130a, and fixed to the bent part 130b, It has a hook portion 130c that comes into contact with the upper end surface of the frame 120. The hook portion 130c is formed of a first hook portion 130c1 that contacts the upper end of the frame 120 and a second hook portion 130c2 that extends along the bent portion 130b. The distance T between the second hook portion 130c2 and the bent portion 130b that extend along each other is larger than the thickness of the frame 120 (for example, about 1.1 to 5 times the thickness of the frame 120).

The operator attaches the roof member 125 to the frame 120 in the following steps.
(Step 1) First, the worker lifts the roof member 125 onto the frame 120.
(Step 2) In order to hook the connecting member 130 onto the frame 120 via the hook portion 130c, the operator lowers the lifted roof member 125 so that the outside of the bent portion 130b is along the inside of the frame 120 (FIG. 11 (see (a)). As a result, the upper end portion of the frame 120 is arranged between the hook portion 130c and the bent portion 130b that extend along each other.
(Step 3) Furthermore, when the worker lowers the roof member 125 and the first hook portion 130c1 comes into contact with the upper end surface of the frame 120, the insertion hole 134 formed in the frame 120 and the bent portion 130b are inserted. The position matches the fastening hole 133. That is, the operator brings the first hook part 130c1 into contact with the upper end surface of the frame 120, and aligns the insertion hole 134 formed in the frame with the fastening hole 133 formed in the bent part 130b.
(Step 4) Then, the operator inserts a fastener (for example, a screw) 131 into the matching insertion hole 134 and fastening hole 133 to fasten the frame 120 and the connecting member 130 to each other (see FIG. b)). Here, if the position of the roof member 125 with respect to the frame 120 shifts, the fastening operation using the fastener 131 becomes difficult. For example, if the roof member 125 shifts in the insertion direction when inserting the fastener (for example, screw) 131 on the side that was worked on first, the position of the fastening hole 133 on the side that was worked on will shift, and the operator , the roof member 125 must be aligned again. However, in the present embodiment, in the cover 100, the upper end portion of the frame 120 is disposed between the second hook portion 130c2 and the bent portion 130b, and this arrangement causes the position of the roof member 125 to shift during the fastening operation. can be prevented. Thereby, the frame 120 and the connecting member 130 can be easily fastened together.

In this way, in this embodiment, the roof member 125 is lowered so that the frame 120 is between the second hook part 130c2 and the bent part 130b, where the distance T is sufficiently larger than the thickness of the frame 120, By bringing the upper end surface of the frame 120 into contact with the first hook portion 130c1, vertical positioning can be performed. Furthermore, the roof member 125 can be held in the correct position even when no fasteners are attached. This makes it easy to attach and detach the fasteners, and as a result, the roof member 125 can be easily attached and detached from the frame 120. Note that "vertical direction" means the longitudinal direction of frame 120 (and wall members 110, 112, 122, 123), and in this embodiment, "vertical direction" means the longitudinal direction of frame 120 (and wall members 110, 112, 122, 123). The vertical direction of FIG. 11(b)) is shown.

Here, as shown in FIG. 11(b), the insertion hole 134 and the fastening hole 133 are arranged below the lower end 125a of the roof member 125 and are exposed from the roof member 125. Therefore, the frame 120 and the connecting member 130 can be easily connected without the roof member 125 obstructing the operator's access to the fasteners. Note that in this embodiment, the fastening hole 133 is formed in the bent portion 130b. In one embodiment, the fastening hole 133 may be formed in the hook part 130c, or may be formed in both the bent part 130b and the hook part 130c. Moreover, the insertion hole 134 and/or the fastening hole 133 may be an elongated hole that is long in the longitudinal direction of the frame 120. This facilitates insertion of the fastener.

In this manner, by fastening the connecting member 130 fixed to the roof member 125 to the frame 120, the roof member 125 is firmly connected to the frame 120 via the connecting member 130. Therefore, the cover 100 can prevent the roof member 125 from being blown away due to strong winds blowing from below. Note that in this embodiment, the roof member 125 and the connection member 130 are formed of separate members. However, in one embodiment, roof member 125 and connecting member 130 may be formed from the same material.

Further, by forming a gap of height H between the wall members 110, 112, 122, 123 and the roof member 123 by the connecting member 130, the cover 100 can connect the roof member 123 (ceiling surface ) may be provided with an upper exhaust port 103 for discharging air in the vicinity. By providing the upper exhaust port 103 in this way, it is possible to prevent air warmed by direct sunlight from remaining above the water supply device 1 in the cover 100. Further, for example, among the plurality of connection members, the height H of the connection member 130 on the upper exhaust port 103 side can be made higher than the other connection members 130. Thereby, it can be inclined at a predetermined angle with respect to the horizontal direction so as to be higher toward the upper exhaust port 103.

In one embodiment, the hook portions 130c of the plurality of connection members 130 may have different heights, and the roof member 123 may have a predetermined slope depending on the difference in height of the hook portions 130c. In another embodiment, one of the plurality of frames 120 may have different heights, and the roof member 123 may have a predetermined slope depending on the difference in height of the frames 120.

This embodiment includes a plurality of frames 120 and a plurality of wall members 110, 112, 122, 123 attached to the plurality of frames 120, and among the plurality of wall members, the intake port side wall member 110 This is a side surface of a cover 100 in which an opening 101 is formed and an exhaust port 102 is formed in an exhaust port side wall member 112. Each of the wall members 110, 112, 122, and 123 is removable and/or replaceable. As an example, the upper exhaust port 103 can be formed or enlarged by removing the wall members 110, 112, 122, and 123, lowering them, and reinstalling them. As an example, the upper exhaust port 103 can be blocked or reduced by removing the wall members 110, 112, 122, 123, raising them, and reattaching them to the frame 120. As described above, in this embodiment, any one of the wall members 110, 112, 122, and 123 can be attached/detached and/or replaced, so that the connection between the upper exhaust port 103, the ground FL, and the lower end 115a of the recess 115 can be adjusted as necessary. A gap or the like formed between the two to take in air can be provided or closed.

In one embodiment, the cover 100 may include a top exhaust port at the top of the cover 100 by moving the control panel sidewall member 122 and the pressure tank sidewall member 123 downwardly to form a gap at the top of the cover 100. . By providing the upper exhaust port in this way, it is possible to prevent warm air above the water supply device 1 from staying in the upper part of the cover 100.

FIG. 12 shows the cover 100 with the wall members 110, 112, 122, 123 removed. As shown in FIG. 12, by connecting the roof member 125, which is the ceiling surface, to the frame 120 via the connecting member 130, the wall members 110, 112, 122, and 123 can be removed while leaving the roof member 125. can.

If the cover 100 has a structure in which the side surface cannot be removed without removing the ceiling surface, an operator will have to remove the roof member even for maintenance that allows access to the water supply device 1 from the side surface. In this way, if the roof member 125 needs to be removed, maintenance work on the water supply device 1 installed outdoors cannot be performed in rainy weather unless some measure is taken, such as installing a simple roof. There's a problem.

In this embodiment, the roof member 125 and the wall members 110, 112, 122, 123 are connected to each other via the frame 120. Therefore, the operator can independently attach and detach the roof member 125 and the wall members 110, 112, 122, and 123, respectively. As a result, if any of the wall members 110, 112, 122, and 123 is removed while leaving the roof member 125, the water supply device 1 can be exposed in the rainy season. maintenance work can be easily performed.

13 and 14 are diagrams showing modified examples of the cover. The cover 200 of this modification has an opening formed on the side surface facing the protruding parts of the water supply device 1, and exposes the parts protruding from the opening. Specifically, the electric motor assembly 30 may include a terminal box 31 on the outer peripheral surface of the motor casing 4 or the like that protrudes more than other parts (see FIG. 1). In this case, if the entire motor assembly 30 including the protruding terminal box 31 is covered with a cover, the overall size of the cover will increase, and there is a risk that the installation location of the water supply device 1 will be restricted. Therefore, as shown in FIG. 13, by forming an opening 123a in the wall member 123 facing the terminal block 31 and exposing at least a portion of the terminal box 31, the size of the cover 200 can be reduced. can. Further, as shown in FIG. 14, it is preferable that an opening for exposing the terminal box 31 is also formed in the wall member 122 facing the terminal block 31. Furthermore, when the terminal box 31 is not provided on the outer peripheral surface of the motor casing 4, the opening 123a can be closed by the closing member 124. Although not shown, the opening formed in the control panel side wall member 122 is naturally also closed by the closing member 124. In this way, the cover 200 of this modification can be applied to both water supply devices 1, regardless of whether or not the protruding terminal box 31 is provided.

Hereinafter, a structure for attaching and detaching the wall member 110 (and the wall members 112, 122, 123) to and from the frame 120 will be described with reference to the drawings. The cover 100 includes a plurality of frames 120 arranged around the water supply device 1 and at least one wall member (wall members 110, 112, 122, 123) forming a side wall of the cover 100, details of which will be described later. The frame 120 has a removable structure for attaching a wall member to the frame 120. In this embodiment, all of the wall members 110, 112, 122, and 123 are equipped with the detachable structure described below, but in one embodiment, the side surfaces having the detachable structure are the front, back, left side, and right side. Only one of the surfaces may be used, or one of the front, back, left, and right sides may be made of the same part.

FIG. 15 is a diagram showing an embodiment of the attachment/detachment structure. FIG. 16 is a diagram showing another embodiment of the attachment/detachment structure. Although FIGS. 15 and 16 describe the attachment and detachment structure of the wall member 110, the wall members 112, 122, and 123 may also have the same attachment and detachment structure as the wall member 110.

In the embodiment shown in FIG. 15, wall member 110 is attached to frame 120 by fasteners (eg, screws, bolt and nut combinations). As shown in FIG. 15, the wall member 110 has a through hole 150, and the frame 120 has a fixing hole 151 that can communicate with the through hole 150. The operator inserts the fastener 155 in a state where the through hole 150 formed in the wall member 110 and the fixing hole 151 formed in the frame 120 are aligned to fasten the wall member 110 and the frame 120 to each other. Here, the through hole 150 is preferably a screw hole into which the fastener 155 can be screwed. Thereby, an operator can fix the wall member 110 to the frame 120 from the outside.

In the embodiment shown in FIG. 16, wall member 110 is attached to frame 120 by hooks. As shown in FIG. 16, the wall member 110 has a hook 160, and the frame 120 has a hook hole 161 into which the hook 160 can be hooked. The hook 160 has a first curved portion 160a that curves toward the outside of the cover 100 (that is, curves from the direction away from the wall member 110 to the direction toward the wall member 110). The hook 160 has a second curved portion 160b that is curved toward the inside of the cover 100 (that is, curved in the opposite direction to the first curved portion 160a). As shown in FIG. 16, wall member 110 is attached to frame 120 in the next step.
(Step 1) Align the hook 160 of the wall member 110 with the hook hole 161.
(Step 2) Insert the hook 160 into the hook hole 161.
(Step 3) Slide the wall member 110 down.

In this embodiment, the wall member 110 is attached to the frame 120 by sliding the wall member 110 downward and hooking the first curved portion 160a to the lower end of the hook hole 161. Furthermore, the wall member 110 can be fixed to the frame 120 by appropriately pressing the wall member 110 against the frame 120 by the second curved portion 160b of the hook 160. However, in one embodiment, the hook 160 may not have the second curved portion 160b and may only hook the first curved portion 160a to the lower end of the hook hole 161; The wall member 110 may be fixed to the frame 120 by the second curved portion 160b pressing the wall member 110 against the frame 120 without the portion 160a touching the lower end of the hook hole 161. In the embodiment shown in FIG. 16, the number of members constituting the cover 100, such as screws and bolts, can be reduced, and the operator can easily assemble and disassemble the cover 100.

As shown in FIGS. 15 and 16, the worker can attach the wall members 110, 112, 122, and 123 to the frame 120 based on the positions of the holes (fixing holes 151 and hook holes 161) in the frame 120. . As a result, the operator can easily position the wall members 110, 112, 122, 123 for attachment.

The embodiment shown in FIG. 15 and the embodiment shown in FIG. 16 may be combined. That is, each of the wall members 110, 112, 122, 123 may have both the through hole 150 and the hook 160, and similarly, each of the plurality of frames 120 may have the fixing hole 151 and the hook hole 161. It may have both.

Note that it is preferable that the attachment/detachment structure using the fastener 155 and the attachment/detachment structure using the hook 160 are arranged vertically along the frame 120. As a result, after the wall member is fixed to the frame 120 with the hook 160, the fastener 155 can be tightened from the outside, so that the disassembly and assembly of the cover 100, which involves the work of attaching and detaching the wall members 110, 112, 122, and 123, is performed. becomes easier. In the embodiments shown in FIGS. 5, 9, etc., a detachable structure using a hook 160 is arranged below a detachable structure using a fastener 155. In one embodiment, the attachment and detachment structure using the hook 160 may be placed above the attachment and detachment structure using the fastener 155. Furthermore, the number of attachment/detachment structures using fasteners 155 and attachment/detachment structures using hooks 160 does not depend on this embodiment. For example, a detachable structure using a plurality of fasteners 155 and/or a detachable structure using a plurality of hooks 160 may be arranged vertically.

In this way, the cover 100 includes a roof member 125 that is detachable from a plurality of frames 120, the roof member 125 forms the ceiling surface of the cover 100, and the front, back, left, and right sides of the cover 100 are formed by a plurality of frames 120. Wall members 110, 112, 122, and 123 form. The detachable structure for attaching the wall member 110 to the frame 120 allows each of the plurality of wall members 110, 112, 122, and 123 to be attached to and detached from the frame 120 independently from the roof member 125. Here, the attachment/detachment structure is a through hole 150 that the wall member 110 has and a fixing hole 151 that can communicate with the through hole 150 that the frame 120 has. Then, the wall member 110 is attached to the frame 120 by inserting the fasteners 155 into the through holes 150 and the fixing holes 151. Further, the attachment/detachment structure is a hook hole 161 into which a hook 160 of the wall member 110 and a hook 160 of the frame 120 can be hooked. Then, by hooking the hook 160 into the hook hole 161, the wall member 110 is attached to the frame 120. Furthermore, the attachment/detachment structure includes a through hole 150 and a hook 160 that are arranged vertically in the wall member, and a fixing hole 151 and a hook hole 161 that are arranged in the frame 120 in a vertical direction. The member 110 is attached to the frame 120 by hooking the hook 160 into the hook hole 161 and inserting the fastener 155 into the through hole 150 and the fixing hole 151.

Hereinafter, with reference to the drawings, a method for maintaining the water supply device 1 covered with a cover 100 in which a roof member 123 and a plurality of wall members 110, 112, 122, 123 are each removably attached to a plurality of frames 120 will be described. explain.

FIG. 17 is a flow diagram for explaining a maintenance method for the water supply device 1. First, the worker performs a step of removing at least one of the plurality of wall members 110, 112, 122, and 123 from the frame 120 while keeping the roof member 123 attached to the frame 120 (see step 1 in FIG. 17). ). At this time, the operator may remove the wall member from among the plurality of wall members 110, 112, 122, and 123 that provides the easiest access to the parts to be maintained. For example, in frequently performed maintenance of the pressure tank 90, at least one of the wall members 110 and 123 is removed. Thereafter, the operator performs a step of maintaining the water supply device 1 from the side of the removed wall member (see step 2 in FIG. 17). For example, in maintenance of the pressure tank 90, an operator checks the sealing pressure of the pressure tank 90 from the side of the removed wall members 110, 123, and replaces the pressure tank 90 with a new one. Furthermore, in step 2 of FIG. 17, the operator may perform maintenance on the removed wall member, processing to adapt to the installation environment, etc. instead of/in addition to the maintenance of the water supply device 1. Thereafter, the operator performs a step of attaching the removed wall member 110 to the frame 120 (see step 3 in FIG. 17). In step 3 of FIG. 17, the operator may attach a new wall member or a wall member suitable for the installation environment to the frame 120 in place of the removed wall member.

FIG. 18 is a flow diagram for explaining details of step 1 in FIG. 17. In the following explanation, only the case where the wall member 110 is removed in step 1 in FIG. 17 will be explained, but the same applies to the case of the wall members 112, 122, and 123. As shown in FIG. 18, in the step of removing the wall member 110 from the frame 120, the operator performs a step of removing the fastener 155 from the through hole 150 and the fixing hole 151 (see the first step in FIG. 18). Specifically, in the first step shown in FIG. 18, the fastener 155 screwed together in the operation shown in FIG. 15 is removed from the through hole 150 and the fixing hole 151. After that, the operator performs a step of removing the hook 160 from the hook hole 161 (see the second step in FIG. 18). Specifically, in the second step of FIG. 18, the operator moves the wall member 110 in order to align the hook 160 hooked as shown in the bottom diagram of FIG. 16 with the hook hole 161 as shown in the middle diagram of FIG. Slide up. At this time, the operator only has to slide the wall member 110 until the upper part of the hook 160 comes into contact with the hook hole 161, and in this embodiment, the positioning when removing the wall member 110 from the frame 120 is also easy. can. Then, in order to remove the hook 160 from the hook hole 161, the operator pulls out the wall member 110 toward the front. In this manner, although the worker cannot visually see the hook 160 when the wall member 110 is attached to the frame 120, the worker can easily remove the wall member 110 fixed with the hook 160.

FIG. 19 is a flow diagram for explaining details of step 3 in FIG. 17. In the following explanation, only the case where the wall member 110 is removed in step 1 in FIG. 17 will be explained, but the same applies to the case of the wall members 112, 122, and 123. As shown in FIG. 19, in the step (step 3 in FIG. 17) of attaching the wall member 110 removed in step 1 of FIG. (See the first step in FIG. 19). Specifically, in the first step in FIG. 19, the operations in FIG. 16 are performed in order from the top. After that, the operator performs a step of attaching the fastener 155 to the through hole 150 and the fixing hole 151 (see the second step in FIG. 19). Specifically, in the second step in FIG. 19, the work in FIG. 15 is performed.

Since the cover 100 allows the roof member 123 and the plurality of wall members 110, 112, 122, and 123 to be easily attached and detached, an operator can remove only the parts necessary to access each device inside the cover 100. Maintenance work on the water supply device 1 can be performed. This reduces maintenance time. Furthermore, an increase in the temperature inside the cover 100 affects the installation environment such as direct sunlight, but with the cover 100 of this embodiment, an operator can remove the roof member 123 and wall members 110, 112, 122, 123. By replacing or processing the cover, it is possible to easily improve the cover to be suitable for the installation environment at the installation site.

The water supply device 1 may be installed in a small outdoor space such as between buildings. Moreover, the water supply device 1 is a lifeline and is regularly maintained. In this embodiment, in a site where sufficient work space is not secured on the side wall side of the cover 100, such as in a narrow area, only the roof member 125 is removed while the wall members 110, 112, 122, and 123 are attached. Maintenance work can also be carried out. In addition, during rainy weather, maintenance can be performed by removing any of the wall members 110, 112, 122, and 123 while the roof member 125 is still attached. In this way, in the cover 100 of the present embodiment, each of the plurality of wall members can be attached to and detached from the frame 120 independently from the roof member 125, so the operator can adjust the roof member 125 depending on the installation status of the water supply device 1, etc. , any one of the wall members 110, 112, 122, 123 can be removed for maintenance.

Note that in the above description, the combination of the pump 2 and the electric motor assembly 30 is referred to as a "motor pump." However, in one embodiment, the inverter 5, which is the variable speed means for the pump 2, may be disposed within the control panel 10, or the inverter 5 may not be provided. In that case, the combination of pump 2 and motor 3 will be referred to as a "motor pump."

Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-described embodiments, and it goes without saying that the present invention may be implemented in various different forms within the scope of its technical idea.

1 Water supply device 2A, 2B Pump 3 Motor 4A, 4B Motor casing 4Aa Fin 5 Inverter 6 Inverter case 6As Fin 9 Control section 10 Control panel 11 Drive shaft 12 Operation panel 20 Impeller 21 Pump casing 21a Suction port 21b Discharge port 22 Suction Piping 23 Discharge piping 24 Collection piping 25 Cooling fans 30A, 30B Motor assembly 31 Terminal box 35 Fan cover 35b Gap 36 Mesh portion 60 Base 65 Support member 66 Legs 67 Frame 90 Pressure tank 90a Air sealing portion 95 Collection piping 95a, 95b Discharge port 96 Closing lid 100 Cover 101 Intake port 102 Exhaust port 103 Upper exhaust port 110 Intake port side wall member 110a Lower end 112 Exhaust port side wall member 115 Recessed portion 115a Lower end 116 Window portion 120 Frame 122 Control panel side wall member 122b Opening 122c Opening 123 Pressure tank side wall member 123a Opening 123b Opening 123c Opening 124 Closing member 125 Roof member 130 Connection member 130a Fixed part 130b Bent part 130c Hook part 130c1 First hook part 130c2 Second hook part 131 Fastener 133 Fastening hole 134 Insertion hole 150 Through hole 151 Fixing hole 155 Fastener 160 Hook 160a First curved part 160b Second curved part 161 Hook hole

Claims (13)

A cover covering a water supply device including a motor pump and a control panel disposed above the motor pump,
The motor pump is
A pump that transports liquid;
a motor that drives the pump;
an inverter through which the drive shaft of the motor passes;
a cooling fan fixed to the drive shaft;
As the pump operates, the cooling fan generates an airflow flowing in the axial direction of the drive shaft, and the motor and the inverter are cooled by the airflow,
The cover is
a first opening adjacent to the cooling fan;
a second opening adjacent to the pump;
At least a portion of the first opening and the second opening face each other with the motor pump in between ,
One of the first opening and the second opening, which are opposed to each other with the motor pump in between, is an intake port for introducing the air sucked by the cooling fan into the cover, and the other is an intake port for introducing the air sucked into the cover into the cover. An exhaust port for discharging air exhausted by the fan to the outside of the cover,
The cover includes an intake port side wall member in which the intake port is formed,
The intake port side wall member has a recess in which the intake port is formed,
The cover is arranged such that the recess is located at a lower position than the control panel . The suction port of the cooling fan faces the adjacent first opening,
2. The cover according to claim 1 , wherein the intake port formed in the recess is the first opening and has a slit shape that restricts access of foreign matter to the cooling fan. The intake port has a slit shape that restricts access of foreign matter to the cooling fan,
The cover according to claim 1 or 2 , wherein the slit-shaped opening is formed only in the intake port side wall member among the side surfaces of the cover. At least a portion of the first opening and the second opening that face each other with the motor pump in between are formed at a position lower than the control panel,
The side surface having an opening formed at a position lower than the control panel among all the side surfaces of the cover is only the side surface where the first opening and the second opening are formed. The cover according to any one of claims 1 to 3 . Either one of the first opening and the second opening facing each other with the motor pump in between is an intake port that introduces air sucked by the cooling fan into the cover,
The water supply device covered by the cover is
A liquid transfer pipe extending along the control panel is connected to the pump disposed downstream of the inverter and/or the motor in the flow direction of air generated by the cooling fan,
The pump and/or the liquid transfer pipe is a water passage portion through which the liquid conveyed by the pump passes,
As the pump operates, the air generated by the cooling fan is heated by the inverter and/or the motor, and then cooled by contacting the water passage section, and the cooled air flows into the liquid transfer pipe. The cover according to any one of claims 1 to 4 , wherein the control panel is cooled by flowing along. Either the first opening or the second opening, which faces each other with the motor pump in between, discharges air generated by the cooling fan and flowing along the motor pump to the outside of the cover. 6. The exhaust port according to claim 1 , further comprising an upper exhaust port provided above the exhaust port for discharging air staying at a higher position than the water supply device to the outside. Cover as described. A cover covering a water supply device including a motor pump and a control panel disposed above the motor pump,
The motor pump is
A pump that transports liquid;
a motor that drives the pump;
an inverter through which the drive shaft of the motor passes;
a cooling fan fixed to the drive shaft;
As the pump operates, the cooling fan generates an airflow flowing in the axial direction of the drive shaft, and the motor and the inverter are cooled by the airflow,
The cover is
a first opening adjacent to the cooling fan;
a second opening adjacent to the pump;
At least a portion of the first opening and the second opening face each other with the motor pump in between,
Either the first opening or the second opening, which faces each other with the motor pump in between, discharges air generated by the cooling fan and flowing along the motor pump to the outside of the cover. an upper exhaust port for discharging air stagnant at a higher position than the water supply device to the outside, above the exhaust port;
a plurality of frames arranged around the motor pump;
a plurality of wall members that are side surfaces of the cover;
a roof member that is a ceiling surface of the cover;
a connecting member fixed to the roof member,
the wall member and the connection member are connected to each other via the frame,
The cover , wherein the upper exhaust port is a gap formed between the wall member and the roof member by the connecting member. Either the first opening or the second opening is an exhaust port that discharges air generated by the cooling fan to the outside of the cover along the axial direction, and at least The cover according to any one of claims 1 to 7 , wherein a part of the cover forms an opening located outside an outer diameter of a pump casing of the pump. The water supply device has fins extending along the axial direction from the inverter to the motor,
1 . Either one of the first opening and the second opening is an exhaust port that discharges air generated by the cooling fan to the outside of the cover along the fins. - The cover according to any one of claims 8 to 9. The water supply device includes a base that supports the motor pump,
The cover according to any one of claims 1 to 9 , wherein at least a portion of a lower end of the cover is located at a higher position than the base. The cover according to any one of claims 1 to 10 , wherein the water supply device includes a pressure tank arranged above the motor pump and in parallel with the control panel. The control panel includes an operation panel facing in one direction,
The pressure tank includes an air enclosure,
The cover according to claim 11 , wherein the cover includes a window portion above the first opening and/or the second opening for exposing the operation panel and/or the air enclosure. . a plurality of frames arranged around the motor pump;
a plurality of wall members attached to the plurality of frames,
Any one of the plurality of wall members is a side surface of the cover in which the first opening or the second opening is formed, and each of the plurality of wall members is detachable and/or replaceable. , the cover according to any one of claims 1 to 12 .

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