JP4492830B2 - Cabinet-type water supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cabinet-type water supply apparatus, and more particularly to an apparatus having improved cooling performance for air-cooling heat-generating equipment inside the cabinet.
[0002]
[Prior art]
Recently, as a water supply device for supplying clean water in buildings, residential buildings, etc., a cabinet type water supply device in which water supply devices are housed in a thin box-shaped cabinet is being widely adopted. As the water supply device, a motor-equipped pump, a pressure tank (accumulator), piping, valves, sensors, a control panel including an inverter, and the like are provided. Since it is not good that water adheres to the control panel including the motor and the inverter, these are arranged in the upper part of the cabinet.
[0003]
The cabinet is almost sealed so that noise generated inside the cabinet does not leak to the outside, so it is difficult to cool the motor and inverter that are the heat source with outside air. It was necessary to provide a cooling means. Therefore, conventionally, a technique of applying a water-cooled motor, a technique of attaching an inverter to a pipe and cooling the pipe, a technique of applying a water-cooled inverter, and the like have been generally employed.
[0004]
[Problems to be solved by the invention]
The above water-cooled motor is very expensive. When the inverter is water-cooled, it is necessary to take measures against condensation on the inverter, and there are many restrictions such as the installation position of the inverter is limited, and the manufacturing cost of the cabinet-type water supply device is expensive. turn into. Moreover, when the inverter is water-cooled, troubles may occur due to condensation.
[0005]
On the other hand, it is not impossible to provide a ventilation opening (gallery) in the cabinet for discharging hot air in the cabinet to the outside, but in that case, not only is the quietness characteristic of the cabinet-type water supply device impaired, Countermeasures against intrusion of mist and dust are also required. An object of the present invention is to provide a cabinet-type water supply apparatus with improved cooling performance for air-cooling a motor, an inverter, and the like.
[0006]
[Means for Solving the Problems]
The cabinet-type water supply apparatus according to claim 1 is a cabinet-type water supply apparatus in which a control panel including a pump driven by an external fan-type air cooling motor, a pressure tank, piping and valves, and a forced air-cooled inverter is housed in the cabinet. In the cabinet, the outer fan type air-cooled motor-equipped pump is arranged in a vertical position on one of the left and right sides of the upper part inside the cabinet so that the motor is located below the upper pump, and the interior of the cabinet A pressure tank is arranged on the other side of the upper part of the cabinet, piping and valves are arranged in the lower part of the interior of the cabinet, and a control panel including the forced air-cooled inverter in the uppermost part of the interior of the cabinet. Arrange the outer fan of the outer fan type air cooling motor and the cooling fan of the forced air cooling type inverter from the lower part to the upper part in the cabinet. Configured to generate a circulating flow of air, it provided the air regulating plate for directing the air flow by the cooling fan of the air blown inverter in the direction of the circulating flow in a forced air-cooled inverter, in the cabinet, the circulating flow In order to strengthen the air fan, an air circulation fan is provided separately from the outer fan of the outer fan type air cooling motor .
[0007]
With the above configuration, during the pump operation, a large circulating flow of air from the lower part to the upper part in the cabinet can be generated by the outer fan of the outer fan type air cooling motor and the cooling fan of the forced air cooling type inverter. Hot air generated mainly by the upper motor and inverter flows on the circulating flow to the lower part, and is cooled by piping and valves (correctly, relatively cool water inside them) in the lower part. The cold air cooled in the lower part of the cabinet rides on the circulating flow and flows to the upper part to cool the upper motor and the inverter.
Since the air flow by the cooling fan of the forced air-cooled inverter is directed in the direction of the circulation flow by the air conditioning plate, the circulation flow can be enhanced by the air conditioning plate. Since the circulation flow is reinforced by the air circulation fan, the cooling performance for cooling the motor and the inverter in the cabinet is further enhanced.
[0008]
The cabinet is desirably one closed shape, is not limited thereto, cabinet, flat structure for Generating an circulation flow depth is small compared to the lateral width It is desirable that It is desirable that the air circulation flow generated in the cabinet is not a complicated circulation flow but a large loop-shaped circulation flow that flows in an annular shape . Motor with pump is also be equipped with two or more sets is not limited to one set.
[0009]
[0010]
[0011]
[0012]
[0013]
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the cabinet-type water supply device 1 is a water supply device installed in the basement of a building such as a building or a condominium, in the vicinity of a parking lot, in a staircase or in the vicinity thereof, and pressurizes water. Water is supplied to each floor. This cabinet-type water supply apparatus 1 includes a cabinet 2, two sets of pump motor modules 3, a pressure tank 4, piping and valves and sensors, a control panel 7 including an inverter 5 and a control device 6, an air circulation fan 8 and the like. The devices other than the cabinet 2 are incorporated in the cabinet 2 in a unit shape.
[0015]
The cabinet 2 is formed in a vertical rectangular parallelepiped shape using a thin steel plate. For example, the left and right width is about 90 cm, the height is about 150 cm, the front and rear width is about 30 cm, and the front and rear width is the pressure tank 4. The front-rear width is set to be slightly larger than the front-rear width, the front-rear width is smaller than the left-right width, and the cabinet 2 has an overall flat box shape. A front panel 2a is detachably attached to the front surface of the cabinet 2. When the front panel 2a is removed, the front surface of the cabinet 2 is fully opened.
[0016]
The front panel 2a can be removed by grasping a pair of left and right handles 2b and performing a release operation. The bottom surface of the cabinet 2 may be configured to be open so that external piping can be introduced into the lowest step inside the cabinet 2. Base plate portions 2c are formed at the lower ends of the left and right side walls of the cabinet 2, bolt holes through which anchor bolts are inserted are formed in the base plate portions 2c, and eye bolts are formed at the left and right ends of the top plate of the cabinet 2. 2d is provided.
[0017]
The devices inside the cabinet 2 and their arrangement will be described. The two sets of pump motor modules 3 are arranged in a state in which they are arranged close to the right and left in the upper right side portion inside the cabinet 2. Each pump motor module 3 is formed by modularizing an external fan type air cooling motor 3a and a pump 3b driven by the motor 3a. The pump motor module 3 is faced with the motor 3a up and the pump 3b down. Arranged in posture.
[0018]
The outer fan 3c (fan) of the outer fan type air cooling motor 3a is located at the upper end of the motor 3a, and the outer fan 3c generates a strong air flow that flows downward. A pressure tank 4 is arranged in an upright posture at the upper left side inside the cabinet 2. This pressure tank 4 is a bladder-type accumulator filled with pressurized air, and is used to pressurize and supply clean water while the operation of the pump 3b is stopped.
[0019]
In the lower part of the cabinet 2, piping pipes, valves and sensors are arranged. The pipes are provided with a suction pipe 9 connected to the water supply main, a water supply pipe 10 connected to the water supply system pipe of the building, and other internal pipes. As the valves, a ball stop valve 11, a backflow preventer 12, gate valves 13, 15, a bypass check valve 14, a ball stop valve 16, and other valves are provided. As the sensors, pressure transmitters 17 and 18 are provided.
[0020]
A control panel 7 including a forced air-cooled inverter 5 and a control device 6 is arranged at the uppermost part inside the cabinet 2. The forced air-cooled inverter 5 is disposed on the left side of the uppermost stage inside the cabinet 2. The forced air-cooled inverter 5 includes two inverter bodies 20, a heat sink 21 fixed in a horizontal posture on the lower surfaces of these inverter bodies 20, and a cooling fan 22 disposed on the lower surface on the left half side of the heat sink 21. Have. As shown in FIGS. 3 to 5, for example, an air conditioning plate 23 made of aluminum, for guiding the air flow generated by the cooling fan 22 to the right in the horizontal direction, is provided in the vicinity of the lower surface of the heat sink 21 and the cooling fan 22. Yes.
[0021]
During the operation of the pump 3b, an air flow as indicated by arrows a to c is generated in the cabinet 2 by the two external fans 3c (fans) of the two sets of external fan type air cooling motors 3a. An air flow as indicated by arrows d to f is generated by the cooling fan 22 of the inverter 5, and a large clockwise flow A is generated in the cabinet 2. The air conditioning plate 23 guides the air flow from the cooling fan 22 to the right side in the horizontal direction, that is, toward the circulation flow A, thereby strengthening the circulation flow A. Further, an air circulation fan 8 is provided near the left end of the middle stage in the cabinet 2 to generate an air flow in the same direction as the circulation flow A as indicated by arrows g and h to reinforce the circulation flow A. Yes.
[0022]
The effect | action of the cabinet type water supply apparatus 1 demonstrated above is demonstrated. As described above, the outer fan type air cooling motors 3a of the two sets of pump motor modules 3 are arranged in a vertical posture on the upper right side inside the cabinet 2, and the forced air cooling inverter 5 is installed inside the cabinet 2. It is arranged on the left side of the uppermost stage, and during the pump operation, the outside fan 3c of the outside fan type air cooling motor 3a and the cooling fan 22 of the forced air cooling inverter 5 are used. Circulating flow A can be generated.
[0023]
As a result, the hot air generated mainly by the upper two sets of motors 3a and the inverter body 20 rides on the circulating flow A and surely flows to the lower part. Of relatively low temperature water). The cold air cooled in the lower part in the cabinet 2 rides on the circulating flow A and surely flows upward, thereby cooling the upper motor 3a, the inverter body 20, and the like. During the operation of the pump, water circulates inside the piping and the pump 3b, so that the piping and valves are kept at a low temperature.
[0024]
Thus, since the high cooling performance of the cabinet-type water supply apparatus 1 could be ensured, an inexpensive outer fan type air cooling motor 3a can be adopted instead of the expensive water cooling motor, and there is no fear of malfunction due to condensation or the like. The inverter 5 can be employed, and it has become possible to provide a low-cost cabinet-type water supply apparatus 1 that is excellent in reliability and durability. In addition, by improving the cooling performance in this way, it is also possible to configure the cabinet 2 in a sealed structure, and it is possible to provide a cabinet-type water supply device that is excellent in silence and can be used even in an environment with a lot of mist and dust. Became.
[0025]
The forced air-cooled inverter 5 is provided with an air conditioning plate 23 for directing the air flow by the cooling fan 22 of the forced air-cooled inverter 5 in the direction of the circulating flow A, and the air flow by the cooling fan 22 of the forced air-cooled inverter 5 by the air-conditioned plate 23. Is directed in the direction of the circulation flow A, the circulation flow A can be strengthened by the air conditioning plate 23. An air circulation fan 8 that reinforces the circulation flow A in the cabinet 2 is arranged so as to be positioned in the circulation flow, and the circulation flow A is supplemented and strengthened by the air circulation fan 8. The cooling performance for cooling the motor 3a and the inverter body 5 is further enhanced.
[0026]
Moreover, since the cabinet 2 has a flat structure with a small front-rear width compared to the left-right width, it can be installed in a small installation space. If the front panel 2a is removed, the entire front surface can be opened, and all internal devices can be maintained and inspected from the front. Therefore, a space for maintenance and inspection is provided on the rear side and the left and right sides of the cabinet-type water supply device 1. There is no need to keep it. Therefore, this cabinet-type water supply apparatus 1 can be installed without restriction on the installation location.
[0027]
Here, the example which changes the said embodiment partially is demonstrated.
1) The two sets of pump motor modules 3 and the pressure tanks 4 and the like are reversed from each other, that is, the two sets of pump motor modules 3 are arranged in the upper left portion inside the cabinet 2, The circulation fan 8 is disposed on the right side of the upper part inside the cabinet 2, the forced air-cooled inverter 5 is disposed on the right side of the uppermost stage inside the cabinet 2, and the external fan 3c of the external fan motor 3a The forced air-cooled inverter 5 may be configured to generate a counterclockwise circulating flow in the cabinet 2.
[0028]
2) The cooling fan 22 in the forced air-cooled inverter 5 may be disposed in an inclined manner so that a flow component toward the circulating flow A is generated with respect to the heat sink 21.
3) As shown in FIG. 6, a vertical air conditioning plate 24 may be provided inside the cabinet 2 so that the vertical flow path of the circulating flow A inside the cabinet 2 becomes long. Further, it is desirable that the air conditioning plate 24 is detachable.
[0029]
【The invention's effect】
According to the cabinet-type water supply apparatus of claim 1, the equipment in the cabinet is arranged as described in “Means for Solving the Problems”, and an external fan of an external fan-type air cooling motor that drives the pump, The cooling fan of the air-cooled inverter is configured to generate a circulating air flow from the lower part to the upper part in the cabinet, so the hot air in the upper part in the cabinet is circulated to the lower part, effectively using piping and valves. Cooling and circulating the cool air in the lower part to the upper part can effectively cool the motor and the inverter with the cool air.
[0030]
This makes it possible to use an inexpensive external fan air-cooled motor instead of an expensive water-cooled motor, and a forced air-cooled inverter that does not worry about malfunction due to condensation, etc., and is a low-cost cabinet with excellent reliability and durability. It has become possible to provide a mold water supply device. In addition, by improving the cooling performance in this way, it is also possible to configure the cabinet in a sealed structure, and it is possible to provide a cabinet type water supply device that is excellent in quietness and can be used even in an environment with a lot of mist and dust. became.
[0031]
And, since the forced air-cooled inverter is provided with the air conditioning plate that directs the air flow from the cooling fan of the forced air-cooled inverter in the direction of the circulating flow, the circulating air can be strengthened by the air conditioning plate and the cooling performance is improved. Can do .
[0032]
And since the fan for air circulation which strengthens the said circulation flow was provided in the cabinet, the cooling performance which reinforces the said circulation flow and cools a motor and an inverter can be improved further.
[0033]
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a cabinet-type water supply apparatus according to an embodiment of the present invention.
FIG. 2 is a front view of a cabinet-type water supply apparatus in a state where a front panel is removed.
FIG. 3 is a front view of a forced air-cooled inverter and an air conditioning plate.
FIG. 4 is a right side view of a forced air-cooled inverter and an air conditioning plate.
FIG. 5 is a bottom view of a forced air-cooled inverter and an air conditioning plate.
6 is a view corresponding to FIG. 2 of a cabinet-type water supply apparatus according to a modified embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cabinet type water supply apparatus 2 Cabinet 3a Outer fan type air cooling motor 3b Pump 4 Pressure tank 5 Forced air cooling inverter 7 Control panel 8 Air circulation fan 22 Cooling fan 23 Air conditioning plate

Claims (1)

In a cabinet-type water supply apparatus that houses a control panel including a pump, a pressure tank, piping and valves, a forced air-cooled inverter, driven by an external fan-type air-cooled motor inside the cabinet,
The outer fan type air-cooled motor-equipped pump is arranged in a standing posture and the motor is positioned below the upper portion of the cabinet, and the upper portion of the interior of the cabinet. A pressure tank is disposed on the other side of the cabinet, piping and valves are disposed in the lower part of the cabinet, and a control panel including the forced air-cooled inverter is disposed in the uppermost part of the cabinet. ,
The outer fan of the outer fan type air cooling motor and the cooling fan of the forced air cooling inverter are configured to generate a circulating flow of air from the lower part to the upper part in the cabinet,
A forced air-cooled inverter is provided with an air conditioning plate that directs the air flow by the cooling fan of the forced air-cooled inverter in the direction of the circulating flow
In the cabinet, an air circulation fan different from the outer fan of the outer fan type air cooling motor is provided to strengthen the circulation flow.
A cabinet-type water supply apparatus characterized by that.

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