JP2022036568A - Water supply device - Google Patents

Abstract

To disclose one example of a water supply device capable of further improving workability when repairing/replacing an inverter circuit.SOLUTION: An inverter box 4 is disposed so that a front surface faces the other end side in a left-and-right direction, and an electric pump 2 is disposed on one end side in the left-and-right direction. Therefore, the water supply device 1 opens a left end side surface while a cover 8 is removed. Consequently, in the water supply device 1, in order to repair/replace an inverter circuit, a work can remove the cover 8 from a stand 7, and then directly access the inverter box 4 from the other end side in a width direction, namely a left side surface.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a so-called package-type water supply device in which an electric pump, a control panel, an inverter box, an accumulator, and the like are housed in one case.

For example, in Patent Document 1, in a water supply device, an electric pump, a control panel, an inverter box, an accumulator, and the like are housed in one case. The case is configured to have a pedestal, a cover, and the like.

The gantry has a plate surface arranged on the back surface. The electric pump, control panel, accumulator, etc. are installed on the gantry. The cover is covered from the front side, the left and right side surface sides, and the upper surface side of the gantry, and is detachably attached to the gantry.

Electrical components such as an inverter box, a reactor, a control board, and a power supply board are housed in the control panel. The inverter box has an inverter circuit. The inverter circuit is a drive circuit that drives an electric pump. The control board controls the inverter circuit. The power supply board supplies power to the inverter circuit.

Japanese Unexamined Patent Publication No. 2005-136352

The invention described in Patent Document 1 has a configuration in which the entire control panel can be slidably displaced in the front-rear direction with respect to the gantry. Therefore, in the invention described in Patent Document 1, in order to repair or replace the inverter circuit, the operator removes the cover from the gantry, slides the entire control panel forward, and then slides the inverter from the right side. You need to access the box.

In view of the above points, the present disclosure discloses an example of a water supply device capable of further improving workability when repairing or replacing an inverter circuit.

The water supply device is a pedestal (7) having a plate surface (7A) substantially parallel to the vertical direction, and a cover (8) detachable from the pedestal (7), with the plate surface (7A) as the back surface. With the cover (8) covering the gantry (7) from the front side, the left and right side surface sides, and the upper surface side, and the horizontal direction substantially parallel to the plate surface (7A) as the width direction, the gantry (7) and the cover (8) When the partitioned internal space is the storage space (9), the electric pump (2A) for water supply is arranged on one end side in the width direction of the storage space (9), and the rotation axis is substantially vertical. An inverter box (4) having an electric pump (2A) arranged so as to be oriented and an inverter circuit for driving the electric pump (2A), and the front surface of the inverter box (4) faces the other end side in the width direction. The inverter box (4) arranged on the other end side in the width direction of the storage space (9), the control board (3A) for controlling the inverter circuit, and the power supply board (3B) for supplying power to the inverter circuit. Is a control panel (3) in which is stored, and a control panel (3) arranged on the side opposite to the plate surface (7A) across the inverter box (4) in the storage space (9), and an electric pump ( An accumulator (5) that holds the water supply pressure when the 2A) is stopped, and includes an accumulator (5) arranged between the inverter box (4) and the electric pump (2A) in the storage space (9). Is desirable.

Thereby, in order to repair or replace the inverter circuit in the water supply device, the operator removes the cover (8) from the gantry (7) and then directly connects to the inverter box (4) from the other end side in the width direction. Can be accessed.

That is, in the water supply device, the operator can easily access the inverter box (4) simply by removing the cover (8). Therefore, workability when repairing or replacing the inverter circuit can be further improved.

Incidentally, the reference numeral in each of the parentheses is an example showing a correspondence relationship with the specific configuration and the like described in the embodiment described later, and the present disclosure is not limited to the specific configuration and the like shown in the reference numeral in the parentheses. ..

It is a figure which shows the water supply device which concerns on 1st Embodiment. It is a figure which shows the pedestal and the cover which concerns on 1st Embodiment. It is a figure which shows the arrangement structure in the water supply device which concerns on 1st Embodiment. It is a figure which shows the arrangement structure in the water supply device which concerns on 1st Embodiment. It is a left side view of the water supply device which concerns on 1st Embodiment. It is a figure which shows the arrangement structure of the inverter box which concerns on 1st Embodiment.

The following "embodiments of the invention" show an example of embodiments that belong to the technical scope of the present disclosure. That is, the matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the following embodiments.

In addition, the arrows and diagonal lines indicating the directions attached to each figure are described in order to make it easy to understand the relationship between each figure and the shape of each member or part. Therefore, the invention presented in the present disclosure is not limited to the directions given in each figure. The shaded area does not necessarily indicate a cross-sectional view.

At least one member or part described with a reference numeral is provided, except when a notice such as "one" is given. That is, if there is no notice such as "one", two or more of the members may be provided. The water supply device shown in the present disclosure comprises at least components such as members or parts described with reference numerals, as well as the illustrated structural parts.

(First Embodiment)
In this embodiment, an example of the water supply device according to the present disclosure is applied to a water supply device of a direct connection type directly connected to the water supply. The direct connection type water supply device is a water supply device in which the supply pressure of water supply acts directly on the suction side of the pump. For this reason, the direct-coupled water supply device usually does not have a water receiving tank.

<1. Configuration of water supply equipment (see FIGS. 1 to 4)>
As shown in FIG. 4, the water supply device 1 according to the present embodiment is a so-called case 6 (see FIG. 1) in which an electric pump 2, a control panel 3, an inverter box 4, an accumulator 5, and the like are housed in one case 6. It is a package type water supply device.

<1.1 Case configuration>
As shown in FIG. 2, the case 6 includes at least a pedestal 7, a cover 8, and the like. The gantry 7 has a plate surface 7A, flange portions 7B to 7D, and the like. The plate surface 7A is a panel-shaped portion substantially parallel to the vertical direction. Hereinafter, the horizontal direction substantially parallel to the plate surface 7A is defined as the width direction or the left-right direction, and the direction orthogonal to the plate surface 7A is defined as the front-rear direction.

The flange portions 7B to 7C are strip-shaped protruding walls protruding in the front-rear direction (forward in this embodiment) from the end portion of the plate surface 7A. The flange portion 7B is provided at the left end of the plate surface 7A. The flange portion 7C is provided at the upper end. The flange portion 7D is provided at the right end.

The cover 8 is a cover member that can be attached to and detached from the gantry 7. Specifically, the cover 8 covers the gantry 7 from the front side, the left and right side surface sides, and the upper surface side with the plate surface 7A as the back surface. Then, the electric pump 2, the control panel 3, the inverter box 4, the accumulator 5, and the like are stored in the storage space 9 (see FIG. 4). The storage space 9 refers to an internal space partitioned by a gantry 7 and a cover 8.

<1.2 Storage items in the storage space>
The electric pump 2 is a combination of a water supply pump and an electric motor for driving the pump. In this embodiment, two electric pumps 2A and 2B are provided. Hereinafter, when the two electric pumps 2A and 2B are generically referred to, they are referred to as electric pump 2.

As shown in FIG. 3, each electric pump 2 is arranged in a posture in which the rotation axis is substantially vertical on one end side in the width direction (right end side in the present embodiment) of the storage space 9. That is, each electric pump 2 is a vertical electric pump.

The inverter box 4 has an inverter circuit for driving the electric pump 2. As shown in FIG. 4, the front surface of the inverter box 4 is on the other end side in the width direction (in the present embodiment, the left end side). It is arranged on the other end side in the width direction of the storage space 9 (in the present embodiment, the left end side) in a state of facing the storage space 9.

The front surface of the inverter box 4 refers to a portion where a setting panel (not shown) of an inverter circuit and various switches (not shown) are arranged. A screw hole (not shown) for fixing the inverter box 4 is provided on the back surface of the inverter box 4.

In this embodiment, as shown in FIG. 5, two inverter boxes 4A and 4B are provided. The inverter box 4A has an inverter circuit for driving the electric pump 2A. The inverter box 4B has an inverter circuit for driving the electric pump 2B.

The two inverter boxes 4A and 4B are arranged side by side in the vertical direction. Two reactors 42A and 42B are arranged between the inverter boxes 4A and 4B. Each of the reactors 42A and 42B constitutes a circuit for improving the power factor.

Each of the inverter boxes 4A and 4B is provided with a fan 41 (see FIG. 4) for circulating cooling air in the vertical direction. Therefore, the reactors 42A and 42B can be cooled by the air flow from the fan 41.

As shown in FIG. 4, the control panel 3 is a case in which the control board 3A, the power supply board 3B, and the like are housed. The control board 3A controls the inverter circuit. The power supply board 3B supplies electric power to the inverter circuit. The control panel 3 is arranged on the side opposite to the gantry 7 (plate surface 7A) of the storage space 9 with the inverter box 4 interposed therebetween.

That is, the control panel 3 is arranged on the front side with respect to the inverter box 4. In other words, the control panel 3 is located on the side surface side of the inverter box 4 (in this embodiment, the right side surface with respect to the front surface of the inverter box 4).

The accumulator 5 is a device that holds the water supply pressure when the electric pump 2 is stopped. As shown in FIG. 4, the accumulator 5 is arranged between the inverter box 4 and the electric pump 2A in the storage space 9.

<2. Details of frame and control panel>
<Frame>
As shown in FIG. 4, the frame 10 is a support member that supports the inverter box 4 and the control panel 3. That is, the inverter box 4 and the control panel 3 are fixed to the gantry 7 via the frame 10.

As shown in FIG. 2, the frame 10 is fixed to a gantry 7 (in this embodiment, a plate surface 7A). The frame 10 includes a first plate surface 10A, a second plate surface 10B, two arm portions 10C, 10D, and the like.

The first plate surface 10A is a plate surface parallel to the front-rear direction facing the accumulator 5 side, and the rear end side is welded and fixed to the plate surface 7A. The second plate surface 10B is a plate surface extending from the front end of the first plate surface 10A toward the flange portion 7B in parallel in the left-right direction.

The arm portion 10C is an arm-shaped portion extending toward the plate surface 7A at the upper end of the extension direction of the second plate surface 10B. The arm portion 10D is an arm-shaped portion extending toward the plate surface 7A at the lower end of the extension direction of the second plate surface 10B.

The tip ends of the two arm portions 10C and 10D are welded and fixed to the flange portion 7B. The first plate surface 10A, the second plate surface 10B, and the two arm portions 10C and 10D are integrally formed by press-molding one plate material.

Then, as shown in FIG. 2, an opening 10E through which the inverter box 4 can move is provided in a portion of the frame 10 corresponding to the front side of the inverter box 4, that is, a portion corresponding to the left end side of the gantry 7. ing.

As shown in FIG. 4, each of the inverter boxes 4A and 4B is fixed to the first plate surface 10A with screws B1 (see FIG. 4). Each screw B1 is inserted from the other end side in the width direction toward the one end side in the width direction. That is, each screw B1 according to this embodiment is inserted from the left side to the right side.

<Control panel>
As shown in FIG. 6, the control panel 3 includes a case body 3C, a door 3D, a hinge 3E, and the like. The case body 3C is a box in which the control board 3A and the power supply board 3B are housed.

The door 3D is a lid that closes the opening of the case body 3C so as to be openable and closable. The hinge 3E is a connecting body that connects the door 3D to the case body 3C so as to be swingable. In this embodiment, two hinges 3E are provided side by side in the vertical direction.

Each hinge 3E is arranged on the side of the case body 3C opposite to the accumulator 5. Therefore, the door 3D can swing with the left end side as the swing center. That is, in the state where the door 3D is open (the state shown by the alternate long and short dash line in FIG. 6), the door 3D is located on the opposite side of the accumulator 5 with the case body 3C interposed therebetween.

By the way, various setting parts and the like are arranged on the inner surface of the door 3D. Therefore, when the worker makes these settings, the worker opens the door 3D to the left side and makes the inner surface of the door 3D face forward.

In this embodiment, the noise filter board having the power input unit is arranged on the left side of the lower part of the case body 3C, and the two earth leakage breakers for the inverter circuit are arranged on the right side of the lower part of the case body 3C. Two earth leakage breakers are arranged side by side in the vertical direction, and a power supply board having an external alarm output circuit and a DC power supply circuit is arranged on the upper part of the case body 3C.

<3. Features of the water supply device according to this embodiment>
In the water supply device 1 according to the present embodiment, when the cover 8 is removed, the left end side surface is open (see FIG. 2). Therefore, in order to repair or replace the inverter circuit in the water supply device 1, the operator directly accesses the inverter box 4 from the other end side in the width direction, that is, the left side surface after removing the cover 8 from the gantry 7. can.

In other words, in the water supply device 1, the operator can easily access the inverter box 4 simply by removing the cover 8. Therefore, workability when repairing or replacing the inverter circuit can be further improved.

In the water supply device 1, the two inverter boxes 4A and 4B are arranged side by side in the vertical direction, and the two reactors 42A and 42B are arranged between the inverter boxes 4A and 4B. As a result, the reactors 42A and 42B are also cooled by the cooling air for cooling the inverter that circulates in the vertical direction.

Since the fan 41 according to the present embodiment generates an air flow that circulates from the lower side to the upper side, in the present embodiment, the reactors 42A and 42B are cooled by the fan 41 provided in the inverter box 4B.

In the water supply device 1, the two hinges 3E are arranged on the opposite side of the case body 3C from the accumulator 5. As a result, as shown in FIG. 6, even when the door 3D is wide open, the door 3D and the accumulator 5 do not interfere with each other.

In the present embodiment, since the power terminal block of the noise filter board is located at the lowermost part, the power cable having a large coating diameter can be connected to the power terminal block without being routed in the control panel 3.

In the present embodiment, since the earth leakage breaker connected to the secondary side of the noise filter board is adjacent to the noise filter board, it is possible to wire a single wire cable having a large wire diameter for a short time.

Further, since the inverter circuit is not housed in the control panel 3 according to the present embodiment and the storage device such as the noise filter board is arranged on a flat surface, the connection of the power line and the alarm at the time of the trial run are performed. Connection of signal lines and water tank electrodes, set of earth leakage breakers, etc. can be easily accessed by simply opening the door 3D.

(Other embodiments)
In the above-described embodiment, the configuration has two electric pumps 2A and 2B, two inverter boxes 4A and 4B, and two reactors 42A and 42B. However, this disclosure is not limited to this. That is, the disclosure may be configured to include, for example, one electric pump 2A.

The frame 10 according to the above-described embodiment is an integral product in which a single plate material is press-molded and the first plate surface 10A, the second plate surface 10B, and the two arm portions 10C and 10D are integrally molded. there were. However, this disclosure is not limited to this.

In the above-described embodiment, the reactors 42A and 42B are arranged between the two inverter boxes 4A and 4B, and the reactors 42A and 42B are cooled by using the fans 41 provided in the inverter boxes 4A and 4B. However, this disclosure is not limited to this.

In the above embodiment, the two hinges 3E are arranged on the opposite side of the case body 3C from the accumulator 5. However, this disclosure is not limited to this. That is, the disclosure may be configured such that the hinge 3E is provided at the lower end of the case body 3C, for example.

In the above-described embodiment, it is an example applied to a direct-coupled water supply device. However, this disclosure is not limited to this. Further, the present disclosure is not limited to the above-described embodiment as long as it conforms to the purpose of the disclosure described in the above-mentioned embodiment.

Therefore, either the configuration in which at least two embodiments of the plurality of embodiments described above are combined, or the configuration requirements shown in the illustration or the configuration requirements described with reference numerals in the above-described embodiment are abolished. It may be a configured configuration.

1 ... Water supply device 2 ... Electric pump 3 ... Control panel 3A ... Control board 3B ... Power supply board 3C ... Case body 3D ... Door 3E ... Hinge 4 ... Inverter box 5 ... Accumulator 7 ... Stand 8 ... Cover 9 ... Storage space 10 ... Frame 10A ... 1st plate surface 10B ... 2nd plate surface 10C, 10D ... Arm part 10E ... Opening 41 ... Fans 42A, 42B ... Reactor B1 ... Screws

Claims (4)

A pedestal with a plate surface that is substantially parallel to the vertical direction,
A cover that is removable from the gantry and covers the gantry from the front side, the left and right side surface sides, and the upper surface side with the plate surface as the back surface.
When the horizontal direction substantially parallel to the plate surface is the width direction and the internal space partitioned by the gantry and the cover is the storage space, the electric power supply for water supply arranged on one end side in the width direction of the storage space. An electric pump that is a pump and is arranged so that the axis of rotation is approximately vertical,
An inverter box having an inverter circuit for driving the electric pump, which is arranged on the other end side in the width direction of the storage space with the front surface of the inverter box facing the other end side in the width direction.
A control panel in which a control board for controlling the inverter circuit and a power supply board for supplying electric power to the inverter circuit are housed, and is arranged on the side opposite to the board surface of the storage space with the inverter box interposed therebetween. Control panel and
A water supply device that is an accumulator that holds the water supply pressure when the electric pump is stopped, and includes an accumulator arranged between the inverter box and the electric pump in the storage space. A frame fixed to the gantry, including a frame that supports the inverter box and the control panel.
An opening in which the inverter box can be moved is provided in a portion of the frame corresponding to the front side of the inverter box.
The water supply device according to claim 1, wherein a screw for fixing the inverter box to the frame is inserted from the other end side in the width direction toward one end side in the width direction. Two of the electric pumps are provided, and the two electric pumps are arranged side by side in the width direction.
Two of the inverter boxes are provided, and each of the inverter boxes is provided with a fan for circulating cooling air in the vertical direction.
Further, the water supply device according to claim 1 or 2, wherein the two inverter boxes are arranged side by side in the vertical direction and a reactor is arranged between the inverter boxes. The control panel has a case body in which the control board and the power supply board are housed, a door that opens and closes an opening of the case body so as to be openable, and a hinge that swingably connects the door to the case body. And
The water supply device according to any one of claims 1 to 3, wherein the hinge is arranged on the opposite side of the case body from the accumulator.

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