JP2002021129A - Cabinet type water feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabinet type water feeding device which air-cools motors and an inverter and has high cooling performance. SOLUTION: Two pairs of an outer fan type cooling motor and a pump are arranged at the right portion of the upper section in a cabinet in an upright posture, with the motors located above and the pumps below. A pressure tank is arranged on the left side, pipes and valves are arranged at the lower section in the cabinet, and a control board including a forced air-cooled inverter and a control apparatus is arranged at the uppermost section in the cabinet. A clockwise circulating flow is generated in the cabinet by the outer fans of the outer fan type cooling motors and the cooling fan of the forced air-cooled inverter, and the upper heat is circulated downward, cooled by the pipes and valves, then circulated upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cabinet-type water supply apparatus, and more particularly to a cabinet-type water supply apparatus having improved cooling performance for air-cooling heat-generating equipment inside a cabinet.

[0002]

2. Description of the Related Art Recently, as a water supply device for supplying clean water in a building, a residential building, or the like, a cabinet-type water supply device in which equipment for water supply is housed in a thin box-shaped cabinet has been widely used. The water supply equipment includes a pump with a motor, a pressure tank (accumulator), piping, valves, sensors, and a control panel including an inverter. Since it is not good for water to adhere to the motor and the control panel including the inverter, these are arranged in the upper part of the cabinet.

Since the cabinet is constructed in a substantially sealed structure so that noise generated inside the cabinet does not leak to the outside, it is difficult to cool a motor or an inverter as a heat source with outside air. It was necessary to provide some cooling means for cooling. Therefore, conventionally, a technique of applying a water-cooled motor, a technique of attaching an inverter to a pipe to cool the pipe, a technique of applying a water-cooled inverter, and the like have been generally adopted.

[0004]

The above-described water-cooled motor is very expensive, and when water-cooling the inverter, it is necessary to take measures against dew condensation on the inverter. The manufacturing cost of the mold water supply apparatus becomes expensive. In addition, when the inverter is cooled with water, there is a possibility that a trouble may occur due to dew condensation.

On the other hand, it is not impossible to provide a ventilation port (gallery) for discharging hot air in the cabinet to the outside, but in this case, only the quietness which is a feature of the cabinet type water supply device is impaired. In addition, measures must be taken against mist and dust intrusion. An object of the present invention is to provide a cabinet-type water supply device with improved cooling performance for air-cooling a motor, an inverter, and the like.

[0006]

According to a first aspect of the present invention, there is provided a cabinet type water supply apparatus including a pump driven by an external fan type air cooling motor, a pressure tank, piping and valves, and a forced air cooling type inverter inside the cabinet. In a cabinet type water supply device containing a control panel, the pump with the outer fan type air-cooled motor is in an upright position, and the upper pump is located at a lower position, on one of the left and right sides of the upper part inside the cabinet. A pressure tank is arranged in the upper part of the interior of the cabinet near the other side, piping and valves are arranged in the lower part of the interior of the cabinet, and the uppermost part of the interior of the cabinet is A control panel including a forced air-cooled inverter is arranged, and the outer fan of the external fan-type air-cooled motor and the cooling fan of the forced air-cooled inverter are used to install a cabinet. The present invention is characterized in that a circulating flow of air is generated from a lower portion to an upper portion in a net.

With the above configuration, during operation of the pump, a large circulating flow of air can be generated from the lower part to the upper part in the cabinet by the outer fan of the outer fan type air cooling motor and the cooling fan of the forced air cooling type inverter. . The hot air generated mainly by the upper motor and the inverter flows to the lower part along a circulating flow, and is cooled at the lower part by pipes and valves (correctly, relatively low-temperature water inside them).
The cold air cooled in the lower part of the cabinet flows upward along the circulating flow and cools the upper motor and inverter.

The cabinet is preferably a closed one, but is not limited to this. The cabinet has a small depth compared to its width in the left-right direction in order to generate a circulating flow. It is desirable to have a flat structure. It is desirable that the circulating flow of the air generated in the cabinet is not a complicated circulating flow but a large loop-shaped circulating flow that flows in a substantially annular shape. Also, the motor-equipped pump is not limited to one set, and may be equipped with two or more sets.

According to a second aspect of the present invention, there is provided the cabinet type water supply apparatus according to the first aspect of the present invention, wherein the forced air-cooling inverter is provided with a baffle for directing an air flow by a cooling fan of the forced air-cooling inverter in the direction of the circulating flow. It is characterized by the following. Since the air flow by the cooling fan of the forced air-cooling inverter is directed in the direction of the circulating flow by the air conditioning plate, the circulating flow can be enhanced by the air conditioning plate.

A cabinet type water supply device according to a third aspect is characterized in that, in the invention according to the first or second aspect, an air circulation fan for enhancing the circulating flow is provided in the cabinet. If an air circulation fan is arranged so as to be located in the flow of the circulating flow, and the circulating flow is strengthened by the air circulating fan, the cooling performance for cooling the motor and the inverter in the cabinet is further improved.

According to a fourth aspect of the present invention, there is provided a cabinet type water supply apparatus, wherein a pump driven by an electric motor is provided inside the cabinet.
In a cabinet type water supply device containing a control panel including a pressure tank, piping and valves, and an inverter, an air circulation fan for generating a circulating air flow from a lower portion to an upper portion is provided in the cabinet. Is what you do.

As described above, the air circulation fan is provided, and the air circulation fan generates a large circulating flow of air from the lower part to the upper part in the cabinet. The hot air generated by the motor and the inverter rides on the circulating flow and flows downward,
The lower part is cooled by piping and valves (correctly, relatively low-temperature water inside them). The cold air cooled in the lower part of the cabinet flows upward along the circulating flow and cools the upper motor and inverter.

It is desirable that the air circulation fan be arranged so as to generate a circulating flow of air flowing in the same direction as the air flow generated by the cooling fan of the motor or the cooling fan of the inverter. The cabinet is desirably a sealed one, but is not limited to this. The cabinet has a flat structure whose depth is small compared to its width in the left-right direction in order to generate a circulating flow. Desirably. It is desirable that the circulating flow of the air generated in the cabinet is not a complicated circulating flow but a large loop-shaped circulating flow that flows in a substantially annular shape.

[0014]

Embodiments of the present invention will be described below 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 a basement of a building such as a building or an apartment, near a parking lot, in a staircase or in the vicinity thereof, and pressurizes water to supply water to each floor. The cabinet type water supply apparatus 1 includes a cabinet 2, two sets of pump motor modules 3, a pressure tank 4, piping, valves and sensors, a control panel 7 including an inverter 5 and a control device 6, an air circulation fan 8, and the like. And devices other than the cabinet 2 are incorporated in the cabinet 2 in a unit shape.

The cabinet 2 is formed in a vertical rectangular parallelepiped shape using a thin steel plate.
m, the height is about 150 cm, the front-rear width is about 30 cm, the front-rear width is set slightly larger than the front-rear width of the pressure tank 4, the front-rear width is smaller than the left-right width, and the cabinet 2 is It has a flat box shape as a whole.
A front panel 2a is detachably mounted on the front surface of the cabinet 2. When the front panel 2a is removed, the front surface of the cabinet 2 is completely opened.

The front panel 2a can be removed by grasping a pair of left and right handles 2b and releasing the handle. The bottom surface of the cabinet 2 may be open so that an external pipe can be introduced into the lowermost portion inside the cabinet 2. Base plates 2c are formed at lower end portions of left and right side walls of the cabinet 2, and these base plate portions 2c are formed.
A bolt hole for inserting an anchor bolt is formed in c, and eye bolts 2d are provided at both left and right ends of the top plate of the cabinet 2.

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 where they are arranged close to each other on the right side of the upper part inside the cabinet 2. Each pump motor module 3 is obtained by modularizing an external fan type air-cooled motor 3a and a pump 3b driven by the motor 3a, and the pump motor module 3 stands upright with the motor 3a up and the pump 3b down. It is arranged in a posture.

The outer fan 3c (fan) of the outer fan type air-cooled motor 3a is located at the upper end of the motor 3a, and the outer fan 3c generates a strong airflow flowing downward. A pressure tank 4 is arranged in an upright position in an upper left portion inside the cabinet 2. The pressure tank 4 is a bladder type accumulator filled with pressurized air, and the pump 3b
Is to pressurize the water supply during the suspension of the operation.

In the lower part of the cabinet 2, piping, valves and sensors are arranged. For plumbing,
There are provided a suction pipe 9 connected to a water main, a water supply pipe 10 connected to a water supply pipe of a building, and other internal pipes. The valves include a ball stopcock 11, a check valve 12, gate valves 13 and 15, and a bypass check valve 1.
4. Ball stopcock 16 and other valves are provided. As sensors, pressure transmitters 17 and 18 are provided.

A control panel 7 including a forced air-cooled inverter 5 and a control device 6 is arranged at the uppermost stage inside the cabinet 2. The forced air-cooled inverter 5 is arranged on the left side of the uppermost section inside the cabinet 2. The forced air-cooled inverter 5 includes two inverter main bodies 20, a heat sink 21 fixed to the lower surface of the inverter main body 20 in a horizontal posture, and a cooling fan 22 disposed on the lower left surface 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 near the lower surfaces of the heat sink 21 and the cooling fan 22. I have.

During operation of the pump 3b, two external fans 3c (fans) of two sets of external fan-type air-cooled motors 3a generate air flows as indicated by arrows a to c inside the cabinet 2. The cooling fan 22 of the forced air-cooling type inverter 5 generates an airflow as shown by arrows d to f, and generates a large clockwise circulation flow A in the cabinet 2. The air conditioning plate 23 guides the air flow from the cooling fan 22 to the right in the horizontal direction, that is, toward the circulation flow A,
The circulation flow A is strengthened. Further, an air circulation fan 8 for generating an airflow in the same direction as the circulation flow A as indicated by arrows g and h to enhance the circulation flow A is provided near the left end of the middle section in the cabinet 2. I have.

The operation of the cabinet type water supply device 1 described above will be described. As described above, the outer fan-type air-cooled motors 3a of the two sets of pump motor modules 3 are arranged in a vertical position at the upper right portion inside the cabinet 2 and the forced air-cooled inverter 5 is mounted inside the cabinet 2 It is located on the left side of the uppermost stage, and during pump operation, the outer fan 3c of the outer fan-type air-cooled motor 3a and the cooling fan 22 of the forced air-cooled inverter 5 allow the large air from the bottom to the top of the cabinet 2 A circulating flow A can be generated.

As a result, the hot air mainly generated by the upper two sets of motors 3a and the inverter body 20 reliably flows to the lower part on the circulating flow A, and the pipes and valves (correctly, Cooled by relatively cool water inside them. The cold air cooled in the lower part of the cabinet 2 flows reliably along the circulation flow A to the upper part, and cools the upper motor 3a, the inverter body 20, and the like. During the operation of the pump, water circulates through the pipes and the inside of the pump 3b, so that the pipes and valves are kept at a low temperature.

As described above, the high cooling performance of the cabinet type water supply device 1 can be ensured, so that the inexpensive fan-type air-cooled motor 3a can be used instead of the expensive water-cooled motor, and there is no fear of failure due to dew condensation or the like. The forced-air-cooling inverter 5 can be adopted, and the low-priced cabinet-type water supply device 1 having excellent reliability and durability can be provided. In addition, by increasing the cooling performance in this way, the cabinet 2 can be configured in a closed structure, and 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 can be provided. Became.

Cooling fan 22 of forced air-cooled inverter 5
Air conditioning plate 23 for directing the air flow by the air in the direction of the circulation flow A
Is provided in the forced air-cooled inverter 5, and the air flow by the cooling fan 22 of the forced air-cooled inverter 5 is directed in the direction of the circulation flow A by the air conditioning plate 23, so that the circulation flow A can be strengthened by the air conditioning plate 23. Circulation flow A in cabinet 2
Is arranged so as to be positioned in the flow of the circulating flow, and the circulating flow A is assisted and strengthened by the air circulating fan 8, so that the motor 3a and the inverter body 5 in the cabinet 2 are strengthened. The cooling performance of cooling is further improved.

Further, since the cabinet 2 has a flat structure in which the front-rear width is smaller than 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 surface. Therefore, a space for maintenance and inspection is provided on the rear side of the cabinet type water supply device 1 and on both left and right sides. There is no need to keep it. Therefore, in this cabinet type water supply device 1, it can be installed without restriction on the installation location.

Here, an example in which the above embodiment is partially changed will be described. 1) The two pump motor modules 3 and the pressure tank 4 and the like are reversed left and right, that is, the two sets of pump motor modules 3 are arranged at the upper left portion inside the cabinet 2 and the pressure tank 4 The circulation fan 8 is arranged on the right side of the upper part inside the cabinet 2, the forced air-cooled inverter 5 is arranged on the right side of the uppermost part inside the cabinet 2, and the outer fan 3 c of the outer fan type motor 3 a The forced air-cooled inverter 5 may be configured to generate a counterclockwise circulation flow in the cabinet 2.

2) The cooling fan 22 in the forced air-cooling type inverter 5 may be arranged so as to be inclined with respect to the heat sink 21 so that a flow component toward the circulating flow A is generated. 3) A vertical baffle 24 may be provided inside the cabinet 2 as shown in FIG. 6 so that the vertical flow path of the circulation flow A inside the cabinet 2 becomes long. Also,
It is desirable that the air conditioning plate 24 be provided detachably.

[0029]

According to the cabinet type water supply device of the present invention, the equipment in the cabinet is arranged as described in the above “Means for Solving the Problems”, and the external fan type air cooling motor for driving the pump is provided. The external fan and the cooling fan of the forced air-cooled inverter are configured to generate a circulating air flow from the lower part to the upper part in the cabinet, so that the hot air in the upper part in the cabinet is circulated to the lower part and piping and valves are It is possible to effectively cool the motor and the inverter with the cool air by circulating the cool air in the lower part to the upper part.

As a result, an inexpensive fan-type air-cooled motor can be used instead of an expensive water-cooled motor, and a forced air-cooled inverter that does not have a fear of failure due to condensation or the like can be used. It became possible to provide an inexpensive cabinet type water supply device. In addition, by improving the cooling performance in this way, it is possible to configure the cabinet in a closed 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.

According to the cabinet type water supply apparatus of the present invention, the forced air-cooling inverter is provided with the air-conditioning plate for directing the air flow by the cooling fan of the forced air-cooling inverter in the direction of the circulating flow. The flow can be enhanced and the cooling performance can be increased. The other effects are the same as those of the first aspect.

According to the cabinet type water supply apparatus of the third aspect, since the air circulation fan for enhancing the circulating flow is provided in the cabinet, the circulating flow is enhanced to further enhance the cooling performance for cooling the motor and the inverter. be able to.

According to the cabinet type water supply apparatus of the fourth aspect, in the cabinet type water supply apparatus in which a control panel including a pump driven by an electric motor, a pressure tank, piping and valves, and an inverter is housed inside the cabinet. By providing an air circulation fan for generating a circulating air flow from the lower part to the upper part in the cabinet, substantially the same effect as that of the first aspect can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a cabinet-type water supply device according to an embodiment of the present invention.

FIG. 2 is a front view of the cabinet type water supply device with a front panel removed.

FIG. 3 is a front view of a forced air-cooled inverter and a baffle plate.

FIG. 4 is a right side view of the forced air cooling inverter and the air conditioner.

FIG. 5 is a bottom view of the forced air-cooled inverter and the air conditioner.

FIG. 6 is a diagram corresponding to FIG. 2 of a cabinet type water supply device of a modified embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet type water supply device 2 Cabinet 3a External 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

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D060 AA10 3L044 AA04 BA06 CA04 CA13 DA01 FA01 KA04 3L081 AA02 AB06 BA05

Claims (4)

[Claims] 1. A cabinet type water supply device containing 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 cooling type inverter inside a cabinet. The pump with the outer fan-type air-cooled motor is arranged in a vertical position on one side closer to the left or right of the upper part of the inside so that the upper pump is located at the lower position, and the other side of the upper part inside the cabinet A pressure tank is arranged at a side portion, piping and valves are arranged at a lower portion inside the cabinet, a control panel including the forced air-cooled inverter is arranged at an uppermost portion of the inside of the cabinet, The external fan of the fan-type air-cooled motor and the cooling fan of the forced air-cooled inverter generate a circulating air flow from the bottom to the top inside the cabinet Cabinet-type water supply apparatus characterized by being configured so as to. 2. The cabinet-type water supply device according to claim 1, wherein a forced air-conditioning plate is provided in the forced air-cooling inverter to direct an air flow generated by a cooling fan of the forced air-cooling inverter in the direction of the circulating flow. . 3. The cabinet type water supply device according to claim 1, wherein an air circulation fan for enhancing the circulation flow is provided in the cabinet. 4. A pump driven by an electric motor, a pressure tank, piping and valves, and the like, inside the cabinet.
A cabinet type water supply device containing a control panel including an inverter, wherein an air circulation fan for generating a circulating air flow from a lower portion to an upper portion is provided in the cabinet.