JP2018040141A - Water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact water supply system at low cost, capable of preventing the temperature in a cabinet from unevenly increasing.SOLUTION: The water supply system includes a pair of pumps 4 and a cabinet 2 that accommodates a pressure tank 6. Both of the pumps 4 are arranged in parallel in the horizontal direction, with the rotation axes of drive motors 4b extending vertically. The pressure tank 6 is disposed adjacent to each of the pumps 4 at a position between the pumps 4, with the central axis extending vertically, deviated from a straight line on which the pumps 4 are arranged.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a water supply apparatus that pressurizes water from a water pipe or a water tank and supplies the pressurized water to an apartment house or a building.

  Conventionally, for example, a water supply device disclosed in Patent Document 1 includes a rectangular parallelepiped cabinet having a storage space therein, and a pair of pumps and a pressure tank are stored in the storage space. Each of the pumps includes a pump main body having a rotation axis extending vertically and a drive motor provided above the pump main body for rotating the pump main body. It is juxtaposed in the direction. On the other hand, the pressure tank is provided at a position on the other half of the accommodation space and has a posture in which the central axis extends vertically. A suction pipe extending in the horizontal direction is provided below the two pumps, and the downstream side of the suction pipe is connected to the upstream side of the pump body. Further, a discharge pipe is provided side by side on the opening side of the cabinet in the suction pipe, and an upstream side of the discharge pipe is connected to a downstream side of each pump body, while a downstream side of the discharge pipe is a lower part of the pressure tank. It is connected to the water supply / drainage section. And the water pressurized by both pumps flows through the discharge pipe and is discharged from the downstream end of the discharge pipe. When the flow rate in the discharge pipe suddenly fluctuates at the time of starting the pump, etc. The pressure tank suppresses the pressure fluctuation in the discharge pipe and holds the pressure in the discharge pipe.

JP 2003-21052 A

  However, in the water supply device of Patent Document 1, since the two pumps are arranged to be biased to a position on one side half of the housing space, the temperature of the housing space is biased only on the pump side due to heat generated when both drive motors are driven. It will rise. Therefore, there is a possibility that the lifetime of various devices provided on both pump sides in the accommodation space may be shortened.

  In order to avoid this, it is conceivable to add a cooling device for cooling various devices. However, the cost increases and the water supply device as a whole may be enlarged.

  In recent years, further downsizing of the entire water supply device has been demanded so that the installation area of the water supply device is reduced.

  This invention is made | formed in view of such a point, The place made into the objective is to provide the low-cost water supply apparatus which is compact and can prevent the temperature inside a cabinet unevenly rising. is there.

  In order to achieve the above object, the present invention is characterized in that the arrangement of both the pumps and the pressure tank in the housing space of the cabinet has been devised.

  That is, in the first invention, a pair of pumps having a pump body that pressurizes the sucked water and a drive motor that drives the pump body, and a pressure tank that can store and hold the water pressurized by each pump And a cabinet having an accommodating space for accommodating both the pump and the pressure tank, and the two pumps are juxtaposed in a horizontal direction in a posture in which a rotation axis of the drive motor extends vertically. The tank is disposed at a position deviating from a straight line between the two pumps in a posture in which the central axis extends vertically and close to each of the two pumps. And

  According to a second invention, in the first invention, a pair of the housing space is provided so as to correspond to each pump body, and a suction pipe for guiding water sucked from the suction port to the pump body and one end thereof are provided. A pair of first discharge pipes that are connected to the pump main bodies and whose other ends are connected to each other so that water pressurized by the pump main bodies is joined at the other end connected to each other. And a second discharge pipe that guides the water in a pressurized state joined at the other connected end portions of the first discharge pipes to the discharge port and discharges the water from the discharge port. The discharge pipes are respectively located in regions corresponding to the pumps on the side where the pressure tank is displaced from the straight line on which the two pumps are arranged.

  According to a third invention, in the second invention, the suction port of the suction pipe and the discharge port of the second discharge pipe face the outside from the bottom surface of the cabinet and open downward. To do.

  According to a fourth invention, in the second or third invention, a gate valve capable of switching each first discharge pipe between an open state and a closed state is provided in the middle of each first discharge pipe. It is characterized by being.

  According to a fifth invention, in any one of the second to fourth inventions, each first discharge pipe extends linearly from each pump body toward the second discharge pipe. To do.

  In a sixth invention, in any one of the second to fifth inventions, an opening communicating with the housing space and a door capable of opening and closing the opening are formed on the front side of the cabinet. The pressure tank is arranged on the opening side.

  According to a seventh invention, in any one of the second to sixth inventions, the other ends of the first discharge pipes connected to each other are inwardly connected to each other of the first discharge pipes. A rectifying plate is provided that partitions a part of the inner side of the end portion into one first discharge pipe side and the other first discharge pipe side and extends toward the pipe center of the second discharge pipe. And

  In an eighth invention, in any one of the first to seventh inventions, a control box for accommodating a forced air-cooled inverter in the middle is arranged in the upper part of the accommodation space, and each of the drive motors is An outer fan type air cooling motor having an outer fan that generates an air flow downward, and a cooling fan that generates an air flow upward and cools the inverter is attached to a position corresponding to the inverter on the lower surface of the control box. The cooling fan is located above the pressure tank.

  In the first invention, since the pressure tank is located between the two pumps, the temperature inside the cabinet is not unevenly increased. Therefore, the lifetime of various devices provided on both pump sides in the accommodation space can be extended. In addition, since the pair of pumps and the pressure tank are in a positional relationship that forms a triangular apex in plan view, it is possible to simultaneously narrow between the two pumps and between the pump and the pressure tank. Therefore, while ensuring the space which accommodates both pumps and a pressure tank inside a cabinet, the horizontal width and depth of a cabinet can be shortened and the whole apparatus can be made compact. In addition, since each pump is close to the pressure tank, the drive motor of each pump is cooled by the water accumulated in the pressure tank, and both pumps can be efficiently cooled without adding a cooling device. And cost can be kept low.

  In the second invention, an area other than the area occupied by each pump and pressure tank in the accommodation space can be used effectively, and each first discharge pipe is disposed at an optimal position without unnecessarily enlarging the cabinet. Can do.

  In 3rd invention, when installing the piping which introduces water into a water supply apparatus, or the piping which supplies water to the downstream installation of a water supply apparatus in the water supply apparatus of this invention, installation of the upstream or downstream pipe of a water supply apparatus In consideration of the situation, these pipes can be installed with changing the direction of connection from any direction of the water supply device without changing the posture, so the water supply device can be installed regardless of the installation posture of the water supply device. The piping can be easily attached to the pipe.

  In the fourth invention, when one of the first discharge pipes is closed with one gate valve, each device around the first discharge pipe without stopping the apparatus by flowing water through the other first discharge pipe On the other hand, if the other first discharge pipe is closed with the other gate valve, the other first valve can be closed without flowing the water to the first first discharge pipe. Maintenance inspection and parts replacement of each device around one discharge pipe can be performed. As described above, maintenance and inspection around the first discharge pipes and replacement of parts can be performed while the apparatus is operating, which is efficient.

  In the fifth aspect, since the pressure loss of the water flowing through each first discharge pipe is reduced, the water flowing out from each pump body can be smoothly flowed to the second discharge pipe.

  In the sixth aspect of the invention, since the area corresponding to each pump on the side where the pressure tank is shifted from the straight line where both pumps are arranged in the accommodating space faces the opening, each first discharge pipe approaches the opening. It becomes the position. Therefore, if the door part of the cabinet is opened, maintenance inspection and parts replacement of each device around the pressure tank and each first discharge pipe can be easily performed.

  In the seventh aspect of the invention, the water flowing through each first discharge pipe joins in a state where the water flowing through each first discharge pipe is guided by the current plate and the flow is directed in the same direction. The pressure loss generated at the point can be reduced. In addition, when only one of the two pumps is operated, when the water flowing through one first discharge pipe approaches the other end of the other first discharge pipe, the other rectifying plate blocks the other Since it does not go to the one discharge pipe side, the water flowing through one of the first discharge pipes smoothly flows toward the second discharge pipe, and the pressure of the water flowing at the other end portion where both the first discharge pipes are connected. Loss can be reduced.

  In the eighth aspect of the invention, the two air flows that circulate in the accommodation space by the downward air flow generated by each drive motor and the upward air flow of the cooling fan that cools the inverter are separated from the central portion of the accommodation space. Since it occurs symmetrically, it is possible to reliably prevent the temperature inside the cabinet from rising unevenly.

It is a perspective view of the water supply apparatus which concerns on embodiment of this invention. It is a front view inside the water supply apparatus which concerns on embodiment of this invention. FIG. 3 is a view taken in the direction of arrow III in FIG. 2. It is the perspective view which looked at the inside of the water supply apparatus which concerns on embodiment of this invention from the front side diagonally upward. It is the perspective view which looked at the inside of the water supply apparatus which concerns on embodiment of this invention from back side diagonally upward. It is sectional drawing in the VI-VI line of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.

  1 and 2 show a water supply apparatus 1 according to an embodiment of the present invention. The water supply device 1 is installed in a condominium or the like, and pressurizes the water stored in a water storage tank to supply it to each floor of the condominium or the like, and includes a rectangular parallelepiped cabinet 2 having an accommodation space S1 therein. And a frame 3 that is formed in a rectangular frame shape by a plurality of frames and supports the cabinet 2.

  A rectangular opening 2a communicating with the accommodation space S1 is formed on the front surface of the cabinet 2, and the opening 2a is opened and closed by a door 2b having a rectangular plate shape.

  As shown in FIGS. 2 to 5, a pair of pumps 4 are juxtaposed in the horizontal direction in the housing space S1, and each pump 4 is located on the back side of the housing space S1 (opposite the opening 2a). Located at each corner.

  The pump 4 includes a pump body 4a in which the rotation center of an impeller (not shown) extends vertically.

  Above the pump body 4a, a substantially cylindrical drive motor 4b having a rotational axis coincident with the rotation center of the pump body 4a is disposed.

  The drive motor 4b is an outer fan type air cooling motor having an outer fan that generates an air flow downward, and rotates an impeller (not shown) of the pump body 4a.

  A pair of suction pipes 5 extending vertically are provided in the lower part of the housing space S1 so as to correspond to the pump bodies 4a. The suction pipes 5 receive water sucked from a suction port 5a formed at the lower end. The pump is guided to the pump main bodies 4a.

  The lower portion of the suction pipe 5 faces the outside from the bottom surface of the cabinet 2, and the suction port 5a opens downward.

  A first mounting flange 5b is provided on the periphery of the suction port 5a, and the first mounting flange 5b can fix one end of a pipe 9a extending from the water storage tank.

  A pressure tank 6 that is a bladder type accumulator filled with pressurized air is provided in the center of the housing space S1 and near the opening 2a.

  The pressure tank 6 has a posture such that its central axis extends vertically, and one end of a water supply / drainage portion 6a having a substantially L shape in side view is connected to the center of the lower end (see FIG. 4). ).

  As shown in FIG. 3, the pressure tank 6 is located at a position shifted to the opening 2a side by a distance D1 from a straight line between the pumps 4 where the pumps 4 are arranged. 4 are arranged so as to approach each of the four.

  In the accommodation space S1, a first discharge pipe 7 is provided in each of the pumps 4 in a region on the opening 2a side of the cabinet 2.

  That is, each of the first discharge pipes 7 is provided in a region corresponding to each of the pumps 4 on the side where the pressure tank 6 is shifted from the straight line in which the both pumps 4 are arranged in the accommodation space S1.

  Each said 1st discharge pipe 7 is diagonally downward toward the area | region by the side of the opening 2a of the said cabinet 2 in the water supply / drainage part 6a of the said pressure tank 6 from the area | region by the side of the opening 2a of the said cabinet 2 in each said pump main body 4a. The one end is connected to the opening 2a side of the cabinet 2 in each pump body 4a, and the other end is connected to each other. The compressed water is joined at the other end connected to each other.

  The other ends of the first discharge pipes 7 connected to each other are connected to the other ends of the water supply / drainage portions 6 a, and the pressure tank 6 is pressurized through the first discharge pipes 7. The state water can be stored and held.

  On the downstream side of each first discharge pipe 7, a gate valve 7 a that can switch the first discharge pipe 7 between an open state and a closed state is provided.

  A check valve 7b is built in the first discharge pipe 7 on the upstream side of the gate valve 7a.

  Further, a flow switch 7c is attached to the first discharge pipe 7 on the upstream side of the check valve 7b.

  A second discharge pipe 8 extending vertically is provided below the other end of the housing space S1 to which the first discharge pipes 7 are connected, and the second discharge pipe 8 is provided with the first discharge pipes. 7 is guided to the discharge port 8a formed at the lower end and discharged from the discharge port 8a.

  The lower part of the second discharge pipe 8 faces outward from the bottom surface of the cabinet 2, and the discharge port 8a opens downward.

  A second mounting flange 8b is provided on the periphery of the discharge port 8a, and the second mounting flange 8b can fix one end of a pipe 9b extending toward each floor of an apartment or the like.

  As shown in FIG. 6, a rectifying plate 12 extending in the vertical direction is disposed inside the other end portions of the first discharge pipes 7 connected to each other, and a midway portion of the rectifying plate 12 is the water supply / drainage portion. It is a position corresponding to the other end portion of 6a.

  The rectifying plate 12 has a shape that gradually decreases in thickness as it goes downward, and its lower portion extends toward the tube center of the second discharge tube 8.

  The rectifying plate 12 has an upper end portion separated from an upper portion of the inner peripheral surface at the other end portion of the first discharge pipes 7 connected to each other, and the first discharge pipes 7 are connected to each other. A part of the inner side of the other end portion is divided into one first discharge pipe 7 side and the other first discharge pipe 7 side.

  As shown in FIG. 2, a control box 10 having a substantially rectangular parallelepiped shape extending in the horizontal direction is disposed at the top of the housing space S <b> 1. A forced air-cooled inverter 10 a is disposed in the middle of the control box 10. Contained.

  A pair of cooling fans 11 is attached at a position corresponding to the inverter 10a on the lower surface of the control box 10 and above the pressure tank 6, and the cooling fans 11 generate an air flow upward. The inverter 10a is cooled.

  When the water supply device 1 is operated, both the pump main bodies 4a suck water through the both suction pipes 5 by the rotational drive of the both drive motors 4b, and the pressurized water is supplied to the first discharge pipes 7 respectively. The water in a pressurized state that flows out into the water and is guided by the first discharge pipes 7 flows through the second discharge pipe 8 and is discharged downstream from the discharge port 8a. When the flow rate in the first discharge pipe 7 and the second discharge pipe 8 changes suddenly at the time of start-up or the like, the pressure tank 6 changes the pressure in the first discharge pipe 7 and the second discharge pipe 8. It suppresses and the pressure in the 1st discharge pipe 7 and the 2nd discharge pipe 8 is hold | maintained.

  As described above, according to the embodiment of the present invention, since the pressure tank 6 is located between the two pumps 4, the temperature inside the cabinet 2 does not rise unevenly. Therefore, the lifetimes of various devices provided on both pumps 4 side in the accommodation space S1 can be extended. In addition, since the pair of pumps 4 and the pressure tank 6 have a positional relationship that forms a triangular apex in plan view, the space between the pumps 4 and between the pump 4 and the pressure tank 6 can be reduced simultaneously. . Therefore, while ensuring the space which accommodates both the pumps 4 and the pressure tank 6 inside the cabinet 2, the horizontal width and depth of the cabinet 2 can be shortened, and the whole water supply apparatus 1 can be made compact. Further, since each pump 4 is located close to the pressure tank 6, the drive motor 4b of each pump 4 is cooled by the water accumulated in the pressure tank 6, and both pumps 4 can be obtained without adding a cooling device. Can be efficiently cooled and the cost can be kept low.

  Moreover, since each 1st discharge pipe 7 is located in the area | region corresponding to each said pump 4 in the side which the said pressure tank 6 shifted | deviated from the straight line where the said both pumps 4 are located in each, in the accommodation space S1 of the cabinet 2 An area other than the area occupied by each pump 4 and pressure tank 6 can be used effectively, and each first discharge pipe 7 can be arranged at an optimum position without making the cabinet 2 unnecessarily large.

  In addition, since the suction port 5a of the suction pipe 5 and the discharge port 8a of the second discharge pipe 8 face outward from the bottom of the cabinet and open downward, a pipe 9a for introducing water into the water supply device 1 and water supply When the pipe 9b for supplying water to the equipment on the downstream side of the apparatus 1 is attached to the water supply apparatus 1, the pipe 9a and the pipe are connected in consideration of the installation situation of the upstream or downstream pipes 9a, 9b of the water supply apparatus 1. It becomes possible to change the direction of connection without attaching 9b from any direction of the water supply apparatus 1 to an unreasonable posture. Therefore, regardless of the installation posture of the water supply apparatus 1, the work for attaching the pipe 9a and the pipe 9b to the water supply apparatus 1 can be easily performed.

  Moreover, since the gate valve 7a is provided in the middle of each first discharge pipe, when one of the first discharge pipes 7 is closed with one gate valve 7a, water is supplied to the other first discharge pipe 7. It is possible to perform maintenance and inspection of parts around one first discharge pipe 7 and replacement of parts without stopping the water supply device 1 by flowing, while the other first discharge pipe 7 is closed by the other gate valve 7a. Then, maintenance and inspection of each device around the other first discharge pipe 7 and parts replacement can be performed without stopping the water supply device 1 by flowing water through the first discharge pipe 7. Thus, maintenance inspection and parts replacement around each first discharge pipe 7 can be performed while the water supply apparatus 1 is operating, which is efficient.

  Moreover, each 1st discharge pipe 7 is extended linearly toward the area | region by the side of the opening 2a of the cabinet 2 in the water supply / drainage part 6a of the pressure tank 6 from the area | region by the side of the opening 2a of the cabinet 2 in each pump main body 4a. Therefore, the pressure loss of the water flowing through each first discharge pipe 7 is reduced, and the water flowing out from each pump body 4 a can be smoothly flowed to the second discharge pipe 8.

  Moreover, since the pressure tank 6 is arrange | positioned at the opening part 2a side of the cabinet 2, it respond | corresponds to each said pump 4 in the side which the said pressure tank 6 shifted | deviated from the straight line where the said both pumps 4 are located in accommodation space S1. The region faces the opening 2a, and each first discharge pipe 7 is positioned close to the opening 2a. Therefore, when the door 2b of the cabinet 2 is opened, maintenance and inspection of parts and parts replacement around the pressure tank 6 and the first discharge pipes 7 can be easily performed.

  Moreover, the water flowing through the first discharge pipes 7 is joined together in a state where the water is guided by the rectifying plate 12 and directed in the same direction as indicated by arrows Y1 and Y2 in FIG. The pressure loss generated at the point where the water flowing through each first discharge pipe 7 joins can be reduced. Further, when only one of the two pumps 4 is operated, when the water flowing through one first discharge pipe 7 approaches the other end of the other first discharge pipe 7, the current plate 12 is blocked. As a result, the water flowing through the first discharge pipe 7 smoothly flows toward the second discharge pipe 8, and the first discharge pipes 7 are connected to each other. The pressure loss of the water flowing in the other end portion can be reduced.

  Further, in the accommodating space S1, as shown in FIG. 2, the accommodating space S1 is composed of the downward air flow generated by the outer fan of each drive motor 4b and the upward air flow of the cooling fan 11 that cools the inverter 10a. Since the two air flows X1 and X2 that circulate are generated symmetrically with respect to the central portion of the accommodation space S1, it is possible to reliably prevent the temperature inside the cabinet 2 from rising unevenly.

  In the embodiment of the present invention, the first discharge pipe 7 has a linear shape, but may have an L shape, for example.

  In the embodiment of the present invention, the suction port 5a of the suction pipe 5 and the discharge port 8a of the second discharge pipe 8 face the outside from the bottom surface of the cabinet 2 and open downward. The structure which faces outside from the side may be sufficient.

  Furthermore, in the embodiment of the present invention, the pressure tank 6 is located at a position shifted from the straight line between the two pumps 4 to the opening 2 a side and close to each of the two pumps 4. Although it is arranged, it may be arranged at a position shifted from the straight line between the two pumps 4 to the opposite side of the opening 2a and at a position approaching each of the two pumps 4. .

  In addition, in the embodiment of the present invention, the cooling fan 11 is located above the pressure tank 6, but it is not essential that the cooling fan 11 is located above the pressure tank 6.

  In addition, the water supply apparatus 1 which concerns on embodiment of this invention is applicable also to the structure etc. which pressurize the water of a tap water and supply it to each floor, such as an apartment.

  INDUSTRIAL APPLICABILITY The present invention is suitable for a water supply apparatus that pressurizes water from a water pipe or a water tank and supplies it to an apartment house or a building.

DESCRIPTION OF SYMBOLS 1 Water supply apparatus 2 Cabinet 4 Pump 4a Pump main body 4b Drive motor 5 Suction pipe 5a Suction port 6 Pressure tank 7 1st discharge pipe 7a Gate valve 8 2nd discharge pipe 8a Discharge port 10 Control box 10a Inverter 11 Cooling fan S1 Housing space

Claims (8)

A pair of pumps having a pump body for pressurizing sucked water and a drive motor for driving the pump body;
A pressure tank capable of storing and holding water pressurized by each pump;
A cabinet having therein a housing space for housing both the pump and the pressure tank;
The two pumps are arranged in parallel in a horizontal direction in a posture in which the rotation axis of the drive motor extends vertically,
The pressure tank is disposed at a position deviating from a straight line between the two pumps in a posture in which the central axis extends vertically and close to each of the two pumps. Water supply device characterized by. In the water supply apparatus of Claim 1,
In the housing space, a pair is provided so as to correspond to each pump body, and a suction pipe for guiding water sucked from a suction port to the pump body and one end connected to each pump body, respectively, A pair of first discharge pipes whose ends are connected to each other and guided so that the pressurized water flowing out from each pump body joins at the other end connected to each other; and the other of the first discharge pipes A second discharge pipe that guides the pressurized water merged at the end portion to the discharge port and discharges the water from the discharge port;
Each said 1st discharge pipe is located in the area | region corresponding to each said pump in the side to which the said pressure tank shifted | deviated from the straight line where both said pumps are located, respectively, The water supply apparatus characterized by the above-mentioned. In the water supply apparatus of Claim 2,
The water supply device according to claim 1, wherein the suction port of the suction pipe and the discharge port of the second discharge pipe face the outside from the bottom surface of the cabinet and open downward. In the water supply apparatus of Claim 2 or 3,
A water supply apparatus, characterized in that a gate valve capable of switching the first discharge pipe between an open state and a closed state is provided in the middle of each first discharge pipe. In the water supply apparatus as described in any one of Claim 2 to 4,
Each said 1st discharge pipe is extended linearly toward each said 2nd discharge pipe from said each pump main body, The water supply apparatus characterized by the above-mentioned. In the water supply apparatus as described in any one of Claim 2 to 5,
On the front side of the cabinet, an opening communicating with the accommodation space and a door that can open and close the opening are formed.
The water supply apparatus, wherein the pressure tank is disposed on the opening side. In the water supply apparatus as described in any one of Claim 2 to 6,
Inside the other end portions of the first discharge pipes connected to each other, a part of the inner sides of the other end portions of the first discharge pipes connected to each other is connected to the first discharge pipe side and the other first discharge pipe side. A water supply device, characterized in that a rectifying plate that is divided into one discharge pipe side and extends toward the pipe center of the second discharge pipe is disposed. In the water supply apparatus as described in any one of Claim 1 to 7,
In the upper part of the housing space, a control box for housing the forced air-cooled inverter in the middle is arranged,
Each of the drive motors is an outer fan type air cooling motor having an outer fan that generates an air flow below,
At a position corresponding to the inverter on the lower surface of the control box, a cooling fan that generates an air flow upward to cool the inverter is attached,
The water supply apparatus according to claim 1, wherein the cooling fan is located above the pressure tank.

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