JP2019011633A - Water supply apparatus and resin plate used for the water supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water supply device capable of easily specifying a model of a device such as a pump or a motor. A water supply device includes a pump 2 that pressurizes water, a motor 3 that drives the pump 2, a pump 2, and a box 30 that houses the motor 3. A resin plate 40 is attached to the box 30. [Selection diagram] FIG. 5

Description

  The present invention relates to a water supply apparatus for supplying water to a building such as an office building or an apartment house, and more particularly to a water supply apparatus provided with a cabinet.

  A water supply apparatus is widely used as a pump apparatus for supplying water to buildings such as office buildings and apartment buildings. This water supply apparatus generally includes a pump for pumping water, a motor for driving the pump, and a control unit for controlling the operation of the motor. The water supply device is connected directly to the water main or via a water receiving tank, and supplies water supplied from the water main to a water supply device (for example, a faucet) in the building.

  In many cases, pumps, motors, and other auxiliary equipment of water supply devices are stored in a metal outdoor cover or cabinet such as stainless steel. Such a water supply device with an outdoor cover and a cabinet-type water supply device can be installed outdoors.

  In order to prevent the water from being stopped due to a third party's mischief, generally the cabinet lid is locked or the outside cover of the controller is operated. It is structured to force the work of removing a part. Further, the cabinet is commonly used for a plurality of models in order to reduce the number of parts inventory management. Moreover, the model information of a water supply apparatus is only attached to what was printed on the nameplate at the time of manufacture.

JP-A-8-284898 Japanese Patent No. 5208457 Japanese Patent No. 3360640 Japanese Patent No. 2656577 Japanese Patent No. 2593151

  During maintenance of the water supply equipment, components (pumps, motors, control panels, etc.) may be replaced, while metal cabinets and outdoor covers will extend over a long period of time (for example, from 10 to several decades). Used. For this reason, there are cases in which different types of pumps, motors, and control panels are installed in the cabinet.

  The water supply device is a lifeline that supplies tap water, and if the water supply device breaks down, the water supply is cut off in the worst case. When a malfunction occurs in the water supply device, the user calls the manufacturer's support center by telephone. At this time, the user reads information about the water supply device from the nameplate attached at the time of manufacture, but it is difficult to read the nameplate due to aging, and there is a possibility that the nameplate cannot be read if it is installed in a narrow area. . In addition, since the cabinet is locked, it is impossible for anyone other than maintenance personnel to check the state of the actual machine such as a pump. Therefore, it is desirable that the user can accurately convey information related to the water supply device such as pumps, motors, and control panel models by telephone.

  The area of the front surface of the cabinet is larger than that of the side surface, and forming a plurality of metal plates by bonding them together has the advantage of being easy to manufacture and inexpensively manufactured rather than processing a single metal plate. However, processing marks (welding marks and rivets) formed after bonding a plurality of metal plates damage the appearance of the water supply device.

  Then, an object of this invention is to provide the water supply apparatus and resin plate which can identify the model of apparatuses, such as a pump and a motor easily, and can improve the designability of an external appearance.

  One embodiment of the present invention includes a pump that pressurizes water, a motor that drives the pump, a box that houses the pump, and the motor, and a resin plate is attached to the box. It is the water supply apparatus characterized by having.

In a preferred aspect of the present invention, the box is a cabinet provided with a cabinet body and a door attached to the cabinet body.
In a preferred aspect of the present invention, the resin plate is attached to the front surface of the box.
In a preferred aspect of the present invention, the resin plate is made of a transparent or translucent resin, and a design composed of figures, patterns, characters, colors, or a combination thereof is printed on the back surface of the resin plate in advance. It is characterized by.
In a preferred aspect of the present invention, the resin plate is made of a colored resin.
In a preferred aspect of the present invention, the front surface of the box has a reinforcing rib having a concave cross section, and the resin plate is attached to the reinforcing rib.
In a preferred aspect of the present invention, the resin plate is detachable from the front surface of the box.

  One aspect of the present invention is a resin plate attached to a box of a water supply device, wherein the resin plate is made of a transparent or translucent resin, and on the back surface of the resin plate, figures, patterns, characters The resin plate is characterized in that a design composed of, a color, or a combination thereof is pre-printed.

  The design of the color of the resin plate and the graphics, patterns, characters, colors, or a combination of these printed on the back of the resin plate can be associated with the model of pumps, motors, etc. installed in the cabinet . Therefore, the user can specify the model of the pump, the motor, and the like by communicating the color of the resin plate and / or the design of the resin plate to the support center of the manufacturer by telephone. In particular, the color of the resin plate itself and the design printed on the back surface are unlikely to discolor and deteriorate. Furthermore, when the pump is replaced with another type of pump, the resin plate can be replaced with a new one along with the replacement. Therefore, the cabinet itself can be used for a long time.

It is a schematic diagram which shows one Embodiment of a water supply apparatus. It is a perspective view which shows the state which removed the cover of the outdoor cover shown in FIG. It is a front view which shows one Embodiment of the internal structure of the water supply apparatus provided with two pumps. It is a left view of the water supply apparatus shown in FIG. It is a perspective view of a cabinet. It is a side view of a cabinet. It is a top view of a cabinet. It is a side view which shows the state which removed the door from the cabinet main body. It is a front view of a door. It is a rear view of a door. It is the sectional view on the AA line of FIG. It is a top view of a reinforcement board. It is a schematic diagram which shows several types of resin plates. It is a front view which shows the door of the cabinet provided with the resin plate extended horizontally.

Embodiments of the present invention will be described below with reference to the drawings.
Drawing 1 is a mimetic diagram showing one embodiment of a water supply apparatus. This water supply apparatus is a water supply apparatus used for supplying water to buildings such as office buildings and apartment houses. As shown in FIG. 1, the suction port of the water supply apparatus is connected to a water supply source 4 such as a water main or a water receiving tank via an introduction pipe 5. A water distribution pipe 7 is connected to the discharge port of the water supply device, and the water distribution pipe 7 communicates with a water supply device (for example, a faucet) disposed inside the building. The water supply device is a pump device for pressurizing water from the water supply source 4 and supplying it to each water supply device of the building.

  The water supply device is an example of a pump 2 that pressurizes water supplied from a water supply source 4 via an introduction pipe 5, a motor 3 as a drive source that drives the pump 2, and variable speed means of the motor 3. The inverter 21, the control unit 20 that controls the water supply operation of the water supply device (that is, the operation of the pump 2), the check valve 22 disposed on the downstream side of the pump 2, and the downstream side of the check valve 22 A flow rate detector (flow switch) 24, a discharge side pressure sensor 26, and a pressure tank 28 are provided. When the water supply device is used outdoors, these components (that is, the pump 2, the motor 3, the inverter 21, the control unit 20, the check valve 22, the flow rate detector 24, the pressure tank 28, etc.) It is accommodated in 300 (box). Here, an example of the pump 2 is a horizontal shaft type pump, and the pump 2 and the motor 3 are attached to a common base (not shown).

  The check valve 22 is provided in the discharge pipe 8 connected to the discharge port of the pump 2 and is a valve for preventing a back flow of water when the pump 2 is stopped. The flow rate detector 24 is a device that detects that the flow rate of water flowing through the discharge pipe 8 is equal to or less than a predetermined small amount of water. The discharge side pressure sensor 26 is a water pressure measuring device for measuring the discharge side pressure of the pump 2. The pressure tank 28 is a pressure retainer for retaining the discharge side pressure while the pump 2 is stopped. The water distribution pipe 7 is connected to the discharge pipe 8.

  One end of the suction pipe 9 is connected to the suction port of the pump 2, and the other end of the suction pipe 9 is connected to the introduction pipe 5. The suction pipe 9 may be provided with a backflow preventer (a decompression type backflow preventer 15 to be described later in FIG. 3) and a suction side pressure sensor (a suction side pressure sensor 17 to be described later with reference to FIG. 3). The backflow preventer is installed to prevent the backflow of water to the introduction pipe 5.

  Water from the water supply source 4 is supplied to the pump 2 through the introduction pipe 5 and the suction pipe 9. When the motor 3 drives the pump 2, the pump 2 pressurizes the water and supplies the water to the building. A part of the water pressurized by the pump 2 is stored in the pressure tank 28. When the operation of the pump 2 is stopped, the water pressure in the water distribution pipe 7 is held by the pressure tank 28.

  The water supply apparatus may include a bypass pipe 11 that bypasses the pump 2. The upstream end of the bypass pipe 11 is connected to the suction pipe 9, and the downstream end of the bypass pipe 11 is connected to the discharge pipe 8. A check valve 16 is attached to the bypass pipe 11 to prevent back flow of water in the bypass pipe 11. This bypass pipe 11 is provided to enable water supply only by the inflow pressure.

  The control unit 20 controls the operation of the pump 2 by controlling the operations of the inverter 21 and the motor 3. More specifically, the control unit 20 controls the rotation speed of the pump 2 based on the output signal of the discharge side pressure sensor 26. In general, the rotational speed of the pump 2 is controlled so that the pressure signal measured by the discharge side pressure sensor 26 matches the set target pressure so that the discharge pressure of the pump 2 becomes constant. By controlling the discharge pressure constant control and the target value of the discharge pressure of the pump 2 appropriately, the water pressure in the water supply device arranged at the most downstream side (terminal) in the building is estimated to be constant. The estimated terminal pressure constant control is performed while controlling.

  The control unit 20 controls the start and stop of the pump 2. In general, the control unit 20 starts the pump 2 when the pressure signal measured by the discharge-side pressure sensor 26 becomes lower than a set starting pressure, and the flow rate detector 24 discharges the water flowing through the pipe 8. When it is detected that the flow rate is equal to or less than the predetermined small amount of water, the pressure is stored in the pressure tank 28 and the pump 2 is stopped. Here, in the water supply apparatus of the present embodiment, when the pump 2 performs a fixed speed operation, the inverter 21 that is a variable speed means may not be provided.

  Furthermore, the control unit 20 may include a display unit 20a. The display unit 20a includes a 7-segment LED and a liquid crystal panel, and displays the rotational speed of the pump 2 and various alarms. Furthermore, the display unit 20a may be provided with an operation unit including various buttons for operating the pump 2 to be stopped.

  FIG. 2 is a perspective view showing a state where the cover 302 of the outdoor cover 300 is removed. Since it is assumed that the water supply device is installed outdoors, the outdoor cover 300 can be used for external devices such as the pump 2, the motor 3, the inverter 21, and the control unit 20 in the outdoor cover 300 such as rain or direct sunlight. Protect from the environment. In this embodiment, the outdoor cover 300 is made of a corrosion-resistant metal such as stainless steel, but may be made of a composite material such as FRP or an organic polymer material such as plastic. A hole 300 a for piping the introduction pipe 5 or the water distribution pipe 7 into the outdoor cover 300 is formed on the side surface of the outdoor cover 300. By attaching a grommet (not shown) to the hole 300a, it is possible to protect the piping and prevent rainwater, dust, or the like from entering the outdoor cover 300 from the hole 300a.

  The outdoor cover 300 includes an outdoor cover body 301 and a lid 302 that is detachably attached to the outdoor cover body 301. The ceiling of the outdoor cover 300 is formed by attaching the lid 302 to the outdoor cover body 301. Here, the outdoor cover main body 301 is preferably assembled. Specifically, the front, side, and back of the outdoor cover main body 301 are formed of a front panel 310, a side panel 311, and a back panel 312, and any one of the front panel 310, the side panel 311, and the back panel 312 is formed. One of them may be a structure that can be attached to and detached from the outdoor cover main body 301 by bolts, screws, fitting, or the like. Accordingly, any of the front panel 310, the side panel 311, and the back panel 312 may be detachable from the outdoor cover body 301 during installation or maintenance of the water supply apparatus. The outdoor cover body 301 is formed with an opening 306 on the front panel 310 for making the display unit 20a of the control unit 20 visible. The opening 306 is covered with a transparent cover made of resin or the like. A resin plate 40 is attached to the center of the front panel 310.

  FIG. 3 is a front view showing an embodiment of the internal structure of a water supply apparatus including a plurality of pumps, and FIG. 4 is a left side view of the water supply apparatus shown in FIG. In addition, the same code | symbol is provided to the structure similar to FIG. 1, and description is abbreviate | omitted. Two pumps 2a and 2b are arranged side by side inside the cabinet 30 (box). The pumps 2a and 2b are vertical shaft type pumps, for example, booster pumps. These pumps 2a and 2b are connected to motors 3a and 3b, respectively. A suction header 18 extending in the horizontal direction is disposed on the suction side of the pumps 2 a and 2 b, and suction ports of the pumps 2 a and 2 b are connected to the suction header 18. A decompression type backflow preventer 15 is disposed between the suction header 18 and the inlet pipe 10 including the ball valve 12 with a strainer. A suction side pressure sensor 17 for detecting the pressure on the suction side is attached to the inlet pipe 10. When an introduction pipe (see reference numeral 5 in FIG. 1) is connected to the strainer portion of the ball valve 12 with a strainer and each pump 2a, 2b is operated with the ball valve 12 opened, the introduction pipe (see reference numeral 5 in FIG. 1). Water is sucked into the pumps 2 a and 2 b via the inlet pipe 10, the decompression type backflow preventer 15, and the suction header 18. In this embodiment, the inlet pipe 10 and the suction header 18 constitute the suction pipe 9 shown in FIG.

  Discharge elbow pipes 27 are connected to the discharge sides of the pumps 2a and 2b, respectively. The discharge elbow pipes 27 detect a check valve 22 for preventing a reverse flow of discharged water and a small amount of water. A flow rate detector (flow switch) 24 for sending a signal to the control unit 20 is disposed. Further, each discharge elbow pipe 27 is connected to a discharge collection pipe 34 that collects (combines) the water discharged from the pumps 2a and 2b, and the discharge collection pipe 34 has a pressure on the discharge side. An upper end of a bypass header 38 having a discharge side pressure sensor 26 for detecting the pressure is connected, and a pressure tank pipe 28 a extending from the pressure tank 28 is connected to a predetermined position along the longitudinal direction of the bypass header 38. Further, the lower end of the bypass header 38 is connected to an outlet pipe 29 having a ball valve 33. The outlet pipe 29 communicates with the suction header 18 via a bypass pipe 11 in which a check valve (see reference numeral 16 in FIG. 1) is disposed. In the present embodiment, the discharge elbow pipe 27, the discharge collecting pipe 34, the bypass header 38, and the outlet pipe 29 constitute the discharge pipe 8 shown in FIG.

  With this configuration, water discharged from the pump 2a (and / or the pump 2b) as the pump 2a (and / or the pump 2b) is operated is discharged from the elbow pipe 27, the check valve 22, and the discharge collecting pipe. 34, the bypass header 38, and the outlet pipe 29 to be discharged to the outside (water distribution pipe 7 in FIG. 1). When the water pressure in the suction header 18 is sufficiently high, the water in the suction header 18 is directly guided to the outlet pipe 29 and discharged to the outside. The pressure tank 28 accumulates pressurized water discharged from the pumps 2a and 2b, thereby preventing frequent start and stop of the pumps 2a and 2b and maintaining the supply water pressure smoothly and constantly.

  An inverter case 23 that houses the inverter 21 is disposed above the pumps 2 a and 2 b in the cabinet 30 so as to be openable and closable forward via a hinge 25. The inverter case 23 has a heat sink 23B made of, for example, aluminum and having heat radiating fins 23A. The inverter 21 is placed on the upper surface of the heat sink 23B. The inverter 21 is a device for driving the motors 3a and 3b at variable speeds by supplying AC power to the motors 3a and 3b respectively connected to the pumps 2a and 2b by changing the frequency and voltage. Have the necessary semiconductor devices.

  Each of the motors 3a and 3b extends a spindle 100 that rotates in accordance with the driving of the motors 3a and 3b to the outside. Each main shaft 100 is attached with a cooling fan 101 that rotates integrally with the main shaft 100 and creates an upward air flow with this rotation. Further, these cooling fans 101 are respectively covered with cylindrical fan covers 102 extending vertically along the motors 3a and 3b.

  When the pumps 2a and 2b are operated by the motors 3a and 3b, the cooling fan 101 rotates integrally with the main shaft 100, and an air flow toward the heat radiation fins 23A of the inverter case 23 is formed as the cooling fan 101 rotates. The fan cover 102 guides this airflow to the heat radiating fins 23A of the heat sink 23B. Then, the air cooled by the pumps 2a and 2b passes through the outer peripheries of the motors 3a and 3b and collides with the heat radiating fins 23A. The motors 3a and 3b are cooled by the air, and the heat radiating fins 23A are further cooled to Is cooled. The airflow collides with the heat radiating fins 23 </ b> A, changes its direction, and becomes an airflow that circulates greatly in the cabinet 30. Due to the circulation of the large air flow in the cabinet 30, the control unit 20 and the like are cooled in contact with the cooled air carried from the surroundings such as the suction pipe 9, the decompression type backflow preventer 15, and the suction header 18. That is, the cooling fan 101 forms an air flow that circulates in the cabinet 30 as a whole, whereby the air in the cabinet 30 is constantly agitated and the internal temperature thereof is made uniform.

  A control unit 20 is provided on the right side surface of the cabinet 30, and the control unit 20 receives signals from the pressure sensors 17, 26 and the like, and the water supply pressure in each water supply device of the building becomes a predetermined pressure. Thus, control for operating the pumps 2a and 2b at a variable speed is performed. More specifically, the control unit 20 sends a command signal for maintaining the water supply pressure in the building to a predetermined pressure to the inverter 21 based on the output signals of the pressure sensors 17 and 26. The inverter 21 changes the rotation speed of the motors 3 a and 3 b based on the command signal sent from the control unit 20. With such a configuration, the water supply device pressurizes the water from the water supply source 4 to a predetermined pressure and supplies the pressurized water into the building.

  5 is a perspective view of the cabinet 30, FIG. 6 is a side view of the cabinet 30, and FIG. 7 is a top view of the cabinet 30. Hereinafter, the pumps 2a and 2b are referred to as a pump 2 when it is not necessary to distinguish between them, and similarly, the motors 3a and 3b are referred to as a motor 3. Since the water supply apparatus is often installed in a narrow space, the installation area of the water supply apparatus is required to be small. For this reason, the cabinet 30 of this embodiment is a vertically long box shape. Moreover, since it is assumed that a water supply apparatus is installed outdoors, the cabinet 30 is comprised from metals with corrosion resistance, such as stainless steel. On the side surface of the cabinet 30, a hole 30 a for enabling the discharge pipe 8 and the water distribution pipe 7 to be connected is formed.

  The cabinet 30 has a cabinet body 31 and a door 35 detachably attached to the cabinet body 31. The door 35 is formed with an opening 36 for making the display unit 20a (see FIGS. 1 and 3) of the control unit 20 visible, and the opening 36 is covered with a transparent cover made of resin or the like. . A reinforcing rib 39 for reinforcing the door 35 is formed at the center of the door 35, and a resin plate 40 is attached on the reinforcing rib 39. Further, a swing handle 45, which is a fastener for fastening the door 35 to the cabinet body 31, is attached to the upper portion of the door 35. FIG. 8 is a side view showing a state in which the door 35 is removed from the cabinet body 31.

  The central portion of the front wall 48 is specifically a central portion obtained by dividing the front wall 48 into three equal parts, ie, a left side portion, a central portion, and a right side portion. In the present embodiment, as an example, the reinforcing rib 39 The center, the front wall 48 and the center of the resin plate 40 substantially coincide.

  9 is a front view of the door 35, FIG. 10 is a rear view of the door 35, and FIG. 11 is a cross-sectional view taken along line AA of FIG. As shown in FIG. 9, a swing handle 45 is attached to the front wall 48 of the door 35, and as shown in FIG. 10, a positioning projection 68 is provided at the lower end of the door 35. A hole (not shown) into which the positioning projection 68 is inserted is formed in the bottom wall of the cabinet body 31. The door 35 is fixed to the cabinet body 31 by a swing handle 45 and a positioning projection 68.

  The door 35 has a front wall 48, an upper wall 49, a bottom wall 51, and two side walls 52. The opening 36 described above is formed in the front wall 48. A top seal 55, a bottom seal 56, and a side seal 58 are attached to the inner surface of the door 35. More specifically, the top seal 55 is disposed along the inner surface of the upper wall 49, the bottom seal 56 is disposed along the inner surface of the bottom wall 51, and the side seal 58 is disposed along the inner surface of the side wall 52. Yes. The door 35 is fixed to the cabinet body 31 via a top seal 55, a bottom seal 56, and a side seal 58.

  The front wall 48 has a reinforcing rib 39 having a concave cross section. The reinforcing rib 39 is located at the center of the front wall 48. The reinforcing rib 39 is constituted by a groove (long depression) formed in the front wall 48. More specifically, a part of the front wall 48 is recessed inside the cabinet 30, and the recessed portion constitutes the reinforcing rib 39. The reinforcing rib 39 is constituted by a part of the front wall 48.

  The reinforcing rib 39 extends in the longitudinal direction of the door 35. In the present embodiment, since the door 35 is vertically long, the reinforcing rib 39 extends in the vertical direction. The reinforcing rib 39 extends from one edge of the front wall 48 to the opposite edge. In the present embodiment, since the reinforcing rib 39 extends in the vertical direction, the reinforcing rib 39 extends from the upper edge of the front wall 48 (tangent to the front wall 48 and the upper wall 49) to the lower edge (front wall 48 and bottom wall 51). Tangent). As shown in FIG. 9, a plurality of (two in this embodiment) reinforcing plates 65 that are in contact with the reinforcing ribs 39 are fixed to the back surface of the front wall 48. These reinforcing plates 65 are arranged in parallel to each other and extend from one side wall 52 of the door 35 to the other side wall 52. The number of reinforcing plates 65 is appropriately determined based on the shape of the door 35. In one embodiment, only one reinforcing plate 65 may be provided. In this embodiment, the reinforcing plate 65 is orthogonal to the reinforcing rib 39. However, in one embodiment, the reinforcing plate 65 may intersect the reinforcing rib 39 at an angle smaller than or greater than 90 degrees.

  FIG. 12 is a top view of the reinforcing plate 65. The reinforcing plate 65 is formed from a single plate. One edge of the reinforcing plate 65 is fixed to the back surface of the front wall 48 by a joining technique such as welding. In order to increase the contact area between the reinforcing plate 65 and the back surface of the front wall 48, the one edge of the reinforcing plate 65 may be formed from a portion where a part of the reinforcing plate 65 is bent. A notch 65a is formed in the central portion of the reinforcing plate 65, and the reinforcing rib 39 extends through the notch 65a. The reinforcing plate 65 is perpendicular to the back surface of the front wall 48 and perpendicular to the longitudinal direction of the reinforcing rib 39. The combination of the reinforcing plate 65 and the reinforcing rib 39 arranged in this way can improve the strength of the door 35. In the present embodiment, the reinforcing plate 65 is made of a material having strength and corrosion resistance, such as stainless steel, like the front wall 48. However, unlike the front wall 48, the reinforcing plate 65 is not exposed to the outside air for a long time. Since it does not exist, you may comprise with materials, such as a synthetic resin and a composite material.

  A resin plate 40 is attached to the front side of the reinforcing rib 39. The resin plate 40 extends over the entire reinforcing rib 39 and covers the entire front side of the reinforcing rib 39. Preferably, the resin plate 40 is detachably attached to the reinforcing rib 39 with an adhesive, an adhesive tape, a screw or the like. In the present embodiment, the resin plate 40 extends in the vertical direction. The resin plate 40 is made of a transparent or translucent resin. On the back surface of the resin plate 40, a design composed of figures, patterns, characters, colors, or a combination thereof is printed in advance. In one embodiment, the resin plate 40 may be made of a resin colored in white, blue, black, or the like. An example of the material of the resin plate 40 is an acrylic material. Since the resin plate 40 is lightweight, it hardly affects the weight of the door 35.

  The door 35 including the reinforcing rib 39 having a concave cross section can be configured by bending or pressing one metal plate (for example, a stainless steel plate). Alternatively, from the viewpoint of manufacturing cost reduction, a plurality of metal plates (for example, stainless steel plates) are bent or pressed to form a part of the reinforcing rib 39, and then these metal plates are welded or riveted. The door 35 may be formed by joining together by a joining technique. In this case, a part of the reinforcing rib 39 is constituted by a seam of a plurality of metal plates. However, as described above, since the resin plate 40 is attached to the front side of the reinforcing rib 39, a seam such as a welding mark or a rivet is provided. It can be hidden by the resin plate 40.

  On the front surface of the cabinet 30, a space that can be raised by a person for maintenance is secured. On the other hand, the back surface or side surface of the cabinet 30 may be close to an obstacle such as a building. Therefore, the resin plate 40 is preferably attached to the front surface of the cabinet 30 (that is, the front side of the front wall 48). In the present embodiment, the color of the resin plate 40 itself and the design (figure, pattern, character, color, or combination thereof) printed on the resin plate 40 are determined depending on the model of the water supply device and the pump (reference numeral 2 in FIG. 1). 3 (see reference numerals 2a and 2b in FIG. 3), motors (see reference numerals 3 in FIG. 1 and reference numerals 3a and 3b in FIG. 3), the control unit 20, and the like. For example, the color of the resin plate 40 itself can be changed according to the model of the pump, or the color or pattern printed on the back surface of the resin plate 40 can be changed.

  FIG. 13 is a schematic diagram showing several types of the resin plate 40. In this example, the color of the resin plate 40 represents the output of the motor, and the pattern attached to the resin plate 40 represents the aperture of the pump. For example, the white resin plate 40 indicates that the output of the motor is 2 kW, the black resin plate 40 indicates that the output of the motor is 4 kW, and the hatched pattern on the resin plate 40 indicates that the aperture of the pump is The horizontal line pattern on the resin plate 40 indicates that the diameter of the pump is 50 mm. Therefore, the type 1 resin plate 40 represents that the output of the motor is 2 kW and the diameter of the pump is 30 mm. As described above, the user can inform the support center of the manufacturer of the color and pattern of the resin plate 40 by telephone, so that the person in charge of the support center can specify the pump and motor models of the water supply device.

  The resin plate 40 can be easily printed so as to be able to identify devices such as a water supply device type, a pump, a motor, and a control unit, as compared with metal. For example, since processing such as changing the color or changing the design for each pump model is easy, it is possible to employ the resin plate 40 having a color or design that is easy for the user to visually identify. In addition, even if there are more variations in the combination of equipment and cabinet 30 due to changes in the equipment inside the water supply device, the resin has more choices in color than metal, so a new type of resin plate is added. Is easy.

  Moreover, by printing on the back surface of the resin plate 40, discoloration of the printing surface can be prevented even when the water supply device is installed outdoors. The resin plate 40 is preferably detachable from the front wall 48. If the resin plate 40 is replaced with another type when the equipment inside the water supply apparatus is exchanged for maintenance, the appearance of the equipment inside the water supply apparatus always matches. For example, when the pump is replaced with another type of pump, the resin plate 40 can be replaced with a new one along with the replacement. Therefore, the cabinet 30 itself can be used for a long time.

  In each embodiment mentioned above, although the reinforcing rib 39 has a vertically long shape, the reinforcing rib 39 may extend in the horizontal direction. Although not shown, in one embodiment, the door 35 may have a plurality of reinforcing ribs 39. For example, a plurality of reinforcing ribs 39 parallel to each other may be formed on the front wall 48. Further, the color and design of the resin plate 40 may be changed according to the installation environment (for example, the wall of a building located on the back of the cabinet 30).

  Similarly, although the resin plate 40 shown in FIG. 5 extends in the vertical direction, as shown in FIG. 14, in one embodiment, the resin plate 40 may extend in the horizontal direction. Further, instead of the reinforcing rib 39 configured from a part of the front wall 48, a reinforcing plate as a separate member may be fixed to the back surface of the front wall 48. Similarly, the resin plate 40 is attached to the front side of the front wall 49. Furthermore, the resin plate 40 may be attached to the rear surface or side surface of the cabinet 30 in addition to the front surface of the cabinet 30 (that is, the front side of the front wall 48).

  The pumps 2a and 2b in the cabinet 30 are vertical shaft pumps. For example, if the pump 2 in the outdoor cover 300 shown in FIG. 2 is a horizontal shaft pump, the height of the outdoor cover 300 is the cabinet 30. Low compared to In this case, the height of the outdoor cover 300 is such that the ceiling surface can be visually recognized. Therefore, when attaching the resin plate 40 to the outdoor cover 300 shown in FIG. 2, it may be attached to the ceiling surface of the outdoor cover 300 (specifically, the upper surface of the lid 302). Further, the reinforcing rib 39 may be formed on the outdoor cover 300.

  Moreover, when it has the housing | casing (control panel) in which electrical components, such as the control part 20, were accommodated in the outdoor cover 300 or the cabinet 30, you may attach the resin plate 40 to the housing | casing. If it does so, the effect similar to having mentioned above can be acquired also in the water supply apparatus used indoors and the outdoor cover 300 is not required.

  Although the water supply apparatus which concerns on embodiment mentioned above is a direct connection type water supply apparatus directly connected to a water main (water supply source 4), the water supply apparatus of this invention is connected to a water main through a water receiving tank. It may be a water tank type water supply device. Further, the water supply source 4 is not limited to a water main and a water receiving tank, but may be a well or middle water. Furthermore, although the water supply apparatus which concerns on embodiment mentioned above is provided with the one or two pumps 2, the water supply apparatus of this invention may be provided with the three or more pumps 2. FIG. When a plurality of pumps 2 are provided in parallel in the water supply device, any of the motor 3, the inverter 21, the check valve 22, and the flow switch 24 may be provided for each of the plurality of pumps 2. Further, the door 35 of the present embodiment may be provided on the side surface of the cabinet 30. Furthermore, in the water supply apparatus described above, the door 35 is detachably attached to the cabinet main body 31, but the door 35 normally protects the equipment in the cabinet main body 31 from the outside environment, and the maintenance of the equipment in the cabinet main body 31 during maintenance. Any maintenance is possible. As an example of the door 35, it may be a hinged door in which the cabinet body 31 and the door 35 are connected by a hinge or the like.

  The embodiment described above is described for the purpose of enabling the person having ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. Various modifications of the above embodiment can be naturally made by those skilled in the art, and the technical idea of the present invention can be applied to other embodiments. Therefore, the present invention should not be limited to the described embodiments, but should be the widest scope according to the technical idea defined by the claims.

2, 2a, 2b Pump 3, 3a, 3b Motor 4 Water supply source 5 Introduction pipe 7 Water distribution pipe 8 Discharge pipe 9 Suction pipe 10 Inlet pipe 11 Bypass pipe 12 Ball valve 15 Depressurization type backflow preventer 16 Check valve 17 Suction Side pressure sensor 18 Suction header 20 Control unit 21 Inverter 22 Check valve 23 Inverter case 23A Radiation fin 23B Heat sink 24 Flow rate detector (flow switch)
26 Discharge side pressure sensor 27 Discharge elbow pipe 28 Pressure tank 29 Outlet pipe 30 Cabinet (box)
31 Cabinet body 33 Ball valve 34 Discharge collecting pipe 35 Door 36 Opening 38 Bypass header 39 Reinforcement rib 40 Resin plate 45 Swing handle 48 Front wall 49 Top wall 51 Bottom wall 52 Side wall 55 Top seal 56 Bottom seal 58 Side seal 65 Reinforcement plate 65a Notch 68 Positioning protrusion 100 Spindle 101 Cooling fan 102 Fan cover 300 Outdoor cover (box)
301 Outdoor Cover Body 302 Lid 306 Opening 310 Front Panel 311 Side Panel 312 Rear Panel

Claims (13)

A pump for pressurizing the water;
A motor for driving the pump;
The pump, and a box that houses the motor,
A water supply apparatus, wherein a resin plate is attached to the box. The box is
The water supply device according to claim 1, wherein the water supply device is a cabinet including a cabinet body and a door attached to the cabinet body.   The water supply apparatus according to claim 1 or 2, wherein the resin plate is attached to a front surface of the box.   The resin plate is made of a transparent or translucent resin, and a design made of a figure, a pattern, a character, a color, or a combination thereof is printed on the back surface of the resin plate in advance. The water supply apparatus as described in any one of Claims 1 thru | or 3.   The water supply device according to any one of claims 1 to 3, wherein the resin plate is made of a colored resin.   The water supply according to any one of claims 1 to 5, wherein the front surface of the box has a reinforcing rib having a concave cross section, and the resin plate is attached to the reinforcing rib. apparatus.   The water supply device according to any one of claims 1 to 6, wherein the resin plate is detachable from a front surface of the box. A resin plate attached to the box of the water supply device,
The resin plate is made of a transparent or translucent resin, and a design made of a figure, a pattern, a character, a color, or a combination thereof is printed on the back surface of the resin plate in advance. Resin plate.   The resin plate according to claim 8, wherein the resin plate is attached to a front surface of the box.   The resin plate according to claim 8 or 9, wherein the box is a cabinet. The resin plate according to any one of claims 8 to 10, wherein the resin plate is made of a colored resin.   The resin according to any one of claims 8 to 11, wherein a front surface of the box has a reinforcing rib having a concave cross section, and the resin plate is attached to the reinforcing rib. plate.   The resin plate according to claim 8, wherein the resin plate is detachable from a front surface of the box.

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