JPS63230968A - Low noise type water supply device - Google Patents

Abstract

PURPOSE:To aim at effectively cooling a water supply device and at lowering noise by providing a fan in a pump chamber, by providing a ventilation duct communicated to the outside, and by lining a sound absorbing material having a heat-insulative effect in the pump chamber. CONSTITUTION:A low noise type water supply device has a pump chamber A in which two pumps 1a, 1b are disposed, and a control chamber B in which a control device 2 is disposed, the pump chamber A and the control chamber B being isolated from each other. The control chamber B is formed therein with an intake port 21 for introducing the outside air, and the pump chamber A is formed therein with a ventilating duct 23 for discharging air in the pump chamber A to the outside. When a fan 26 is driven, the air in the pump chamber A is compulsorily discharged to the outside. A sound absorbing material 28 having heat-insulating effect is lined in the pump chamber A. Thus, it is possible to aim at effectively cooling the water supply device, and at surely lowering noise.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a low-noise water supply device suitable for installation in densely populated residential areas, and which controls a pump and the pump and controls the pump to a permissible temperature. and a low control device.

[Conventional technology]

FIGS. 6(a) to 6(c) show an example of the configuration of a conventional water supply device.

The conventional water supply device shown in the figure has a top plate 31 and a base 32.
A chamber 30 is formed by the side plates 33a to 33d provided between the two, and two pumps 34a,
34b and a control device 35 whose allowable temperature is set lower than that of the pump. Two pumps 34a
, 34b, suction pipes 36a, 36b passing through one side plate 33b are connected to each suction side, and one merging pipe 3 passing through the side plate 33a is connected to each discharge side.
7 are connected to each other. the two pumps 34a,
34b is attached to the base 32 via a vibration isolator 38 made of rubber or the like, and is fixed to a stand 39.
Inside, at the position next to the side plate 33c and the side plate 33a,
It is located between 33b.

The control device 5 controls the operation of the pumps 34a and 34b, and is located in the room A between the side plates 33a and 33b closer to the side plate 33d.

On the other hand, an intake port 40 for taking outside air into the room A is provided at the lower side of each of the side plates 33a to 33d, and between each of the side plates 33a to 33d and the top plate 31, the air inside the room 30 is provided. A gap 41 is provided for discharging the liquid to the outside.
As shown in Figures (b) and (C), outside air enters the chamber 30 through the intake port 40 and pumps 34a, 34.
A natural cooling structure is used to cool the control device [35] and exit from the gap 41.

[Problem that the invention seeks to solve]

By the way, in the prior art shown above, a natural cooling structure is adopted in which outside air is taken into the chamber 30, cools the pumps 34a and 34b, and then exits outside.
, control device than 34b! Since the permissible temperature of 35 is low, it must be cooled with respect to the control device 35.

Therefore, if an attempt is made to naturally cool the control device 35 to below the allowable temperature, the areas of the intake port 40 and the gap 41 must become larger, which increases the pump 34a.
, 34b leaks, and the top plate 31., which defines the inside of the room 30. Base 32. There is a problem in that the sound insulation effect of the side plates 33a to 33d is not fully utilized, resulting in increased noise.

Further, since the intake ports 40 are provided in the side plates 33a to 33d, and the gap 41 is provided between the side plates 33a to 33d and the top plate 31, the air entering the chamber 30 from the intake ports 40 is There is a problem in that the cooling effect does not function effectively because the cooling gas does not flow into the center of the inner wall, passes through the inner walls of the side plates 33a to 33d, and exits from the gap 41 without significantly contributing to cooling.

SUMMARY OF THE INVENTION In view of the problems of the prior art described above, an object of the present invention is to provide a low-noise water supply system that can reduce leakage from a pump driver and reduce noise, and can effectively cool a control device. There is a particular thing.

[Means for solving problems]

In the present invention, a pump chamber in which a pump is installed and a control chamber in which a control device is installed are divided and formed. Further, an intake port for taking in outside air is provided in the control room, a connecting path is formed between the control room and the pump room, and a ventilation duct having a fan and communicating with the outside is provided in the pump room. At the same time, the pump chamber is lined with a sound absorbing material that has a heat insulating effect. The fan is configured to take outside air into the control room through the intake port, and forcefully exhaust the taken air to the outside through the communication path, the pump room, and the ventilation duct in sequence.

[Effect]

When the fan in the ventilation duct is driven, the fan sucks the air inside the pump room into the ventilation duct and exhausts it to the outside. Along with this, outside air is taken into the control room from the intake port, and the taken air is transferred to the control equipment. The air passes through the pump while cooling it, enters the pump chamber via a communication channel, passes through the pump while cooling it, and is discharged through the ventilation duct, that is, the air is forcibly taken in and discharged by a fan. .

Therefore, since air is forcibly taken in and discharged by a fan, and the pump room and the control room are partitioned to operate the control device and the pump sequentially, even if the allowable temperature of the control device is lower than that of the pump, the control device This has the effect of providing effective cooling with almost no influence of heat generated from the pump.

Furthermore, since the pump chamber is lined with a sound absorbing material and the pump chamber is provided with a ventilation duct, the operating noise of the pump and the sound of the cooling air can be reduced, which has the effect of ensuring a reduction in noise.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1(a) is a front sectional view showing a low-noise water supply device of the present invention, FIG. 1(b) is a side sectional view of the same, and FIG. .

The low noise type water supply device of the example is shown in Fig. 1 (a) and (b).
), a pump room A in which two pumps la and lb are installed, and a control room B in which a control device 2 is installed are divided and formed.

The control room B has a top plate 3 and side plates 5a to 5d disposed between the bases 4 and 1 to form an airtight space, and inside the control room B, a control room B has a top plate 3 and side plates 5a to 5d disposed between the bases 4 and 1. It is mounted on a stand 6. For installation, the stand 6 is the base 4
Fixed.

The control device 2 is used to control the operation of the two pumps, pumps 1a and 1b, and its allowable temperature is set lower than that of the pumps.

The pump chamber A is arranged between the side plate 5a and the control device 2 in the control room B, and includes a top plate 7, a part of the base 4, and side plates 8a to 8d arranged between the two, It defines a rectangular space. Inside the pump chamber A, two pumps l are mounted on the upper surface of a common base 9 provided on the base 4.
a and lb are installed. The common base 9 is fixed to the base 4 via a vibration isolator 10 made of rubber or the like.

The two pumps la and lb have a suction pipe 12 connected to each suction side via a flexible pipe 11, and a water supply pipe 15 connected to a confluence pipe 13 connecting each discharge side via a flexible pipe 14. It is connected. One flexible pipe 11 is inserted through a side plate 5a defining a control chamber B and a side plate 8a defining a pump chamber A. The other flexible pipe 15 is connected to the control room B.
It is inserted through the side plate 5b that defines the. The merging pipe 13 has an intermediate position that passes through the side plate 8b that defines the pump chamber A, and a position downstream from the insertion part that connects the base 4 with the vibration isolator 1.
A pressure tank 16 for storing water and a pressure gauge 17 for indicating the water supply pressure of the pumps la and lb are supported by a support body 20 provided through a support body 20 and located halfway downstream from the insertion part. A pressure switch 18a detects water supply pressure to automatically operate the pump.

18b is provided.

And the control device 2 and two pumps la.

1b, an intake port 21 is formed in the control room B to take in outside air, and a communication path 22 is formed between the control room B and the pump room A, so that the air in the pump room A is introduced into the pump room A. A ventilation duct 23 is formed to exhaust the air to the outside.

As shown in FIG. 1(b), the intake port 21 has a pair of holes drilled in the horizontal direction in the upper half of the side plate 5b located near the control device 2, and a pair of holes in the vertical direction. There are multiple stages, and outside air is taken into the control room B through the holes. The communication path 22 is provided with a plurality of holes in the lower half of the side plate 8b of the pump chamber A. The ventilation duct 23
In order to communicate the pump chamber A with the outside, one end thereof is connected to an opening 24 formed in the top plate 7, and the other end is connected to an exhaust port 25 formed in the side plate 5a, It is installed on the top plate 7 of the pump room A. Further, the ventilation duct 23 has a fan 26 installed at one end thereof and located at the opening 24 of the top plate 7, and when the fan 26 is driven, the air in the pump room A is forcibly discharged to the outside. I try to do that.

In addition, the above-mentioned import slot 21. Communication route 22. A canopy 27 is provided at the top of each outlet 25 to prevent rainwater and dust from entering the inside, but as shown in FIG. It is also possible to make it longer.

Further, in order to insulate the operating noise of the pumps la and lb from the outside, a sound absorbing material 28 is lined inside the pump chamber A. The sound absorbing material 28 is attached to the inside of each of the top plate 7 and side plates 8a to 8d that define the pump chamber A, and is configured to have a heat insulating effect. Furthermore, the sound absorbing material 28 is also pasted on the inside of the member defining the ventilation duct 23.

Next, the operation of the low-noise water supply device of the embodiment will be described.

When the fan 26 of the ventilation duct 23 is driven, the fan 2
6, the air in the pump room A is sucked into the ventilation duct 23 and discharged to the outside from the exhaust port 25. As a result, the air in the pump room A is sucked into the ventilation duct 23 and discharged to the outside from the exhaust port 25. External air is taken in from.

The taken air passes through the control device 2 while cooling it;
It enters the pump room A through the communication path 23.

It passes through the ventilation duct 23 while cooling the pumps la and lb.
It is forcibly discharged from the exhaust port 25 through the. That is.

A series of air intake and exhaust operations are forced by fan 26.

Therefore, by forcibly taking in and discharging air with the fan 26, and by partitioning the pump room A and the control room B, external air is taken into the control room B to cool the control equipment [2] and to cool the control equipment [2]. Since air is sent into the pump chamber A and the pump 1 is cooled down sequentially, even if the allowable temperature of the control device 2 is lower than that of the pump 1, the control device 2 is hardly affected by the heat from the pump 1, and the control device 2 is effectively cooled. Cooling can be performed. Moreover, even if the temperature inside control room B rises due to radiant heat from the sun, etc.

Since air is forced through, there is no fear that the temperature of the control device 2 will exceed the permissible temperature. Furthermore, the pump chamber A is lined with a sound absorbing material 28 that has a heat insulating effect.

The heat insulating effect of the sound absorbing material can prevent the heat from the pump 1 from being transmitted to the control room.

Further, since the pump chamber A is lined with a sound absorbing material 28 and is provided with the ventilation duct 23, not only the operating noise of the pump 1 but also the ventilation noise can be reduced, and the noise can be reduced accordingly. In addition to this, the ventilation duct 23 is also lined with sound absorbing material 28, which reduces fan drive noise as well.
In addition to further reducing pump operating noise and ventilation noise,
As shown in the figure, if the ventilation passages are made longer by shielding plates 29a to 29c, further noise reduction can be achieved.

Furthermore, the suction side of pumps la and lb and the merging pipe 13
Since the flexible pipes 11 and 14 are connected to the flexible pipes 11 and 14, and the merging pipe 13 is supported via the vibration isolator 19, the vibrations of the pumps la and lb are
1.14 and the vibration isolator 19, it can be absorbed and relaxed and can be prevented from being transmitted to the suction pipe 12 and water supply pipe 15.

FIGS. 3(a) and 3(b) show a second embodiment of the low-noise water supply device of the present invention.

This embodiment differs from the first embodiment in that a pressure tank 16 is installed in the pump room A, which is connected to a midway point of the merging pipe 13, and the water stored in the pressure tank 16 is The point is that the heat from the pump 1 can be cooled down. Therefore, the pressure tank 16 is arranged so as to straddle the motor parts of the two pumps la and lb,
The hottest part of pumps la and lb is cooled.

Therefore, according to this embodiment, since the inside of the pump chamber A is cooled using the pressure tank 16, it is possible to reduce the size of the fan 26.

FIGS. 4 and 5 are schematic diagrams showing various other embodiments of the low-noise water supply device of the present invention.

The two embodiments described above are both examples in which the pump chamber A is formed within the control room B, but in the embodiment shown in FIG. has been done.

Further, this embodiment differs from the previous embodiment in that the ventilation duct 23 provided in the pump room A is branched into two directions to the outside.

That is, the ventilation duct 23 in this case is provided on the side opposite to the control room B in the pump room A', and has a first end extending downward from the fan 26 side, which is one end thereof, and branching into two directions. ．． By having second branches 23a, 23b and increasing the distance of the duct itself.

The operating sound of the pump 1 and the sound of the cooling air can be further reduced, and noise can be reduced.

Therefore, as in the embodiment shown in FIG. 5, the ventilation duct 23 branches horizontally and radially from the side of the fan 26 provided in the upper part of the pump room A to the first to fourth branch portions extending downward. 23a to 23d, the distance of the duct itself becomes even longer, so it is possible to further reduce noise.
Providing a shielding plate 23c or the like is extremely effective in reducing noise.

〔Effect of the invention〕

As described above, according to one aspect of the present invention, a pump in which a pump is installed inside and a control room in which a control device is installed inside are partitioned, and the control room is provided with an intake port for taking in outside air. , and a communication path is formed between the control room and the pump room, and the pump room is provided with a ventilation duct that communicates with the outside, and is lined with a sound-absorbing material having a heat insulating effect, and the ventilation duct is provided with a ventilation duct that communicates with the outside. Air is taken into the control room from the intake port, and the taken air is passed through a communication path,
A fan was installed to force exhaust air to the outside through the pump room and the ventilation duct, and the fan cooled the control device and pump in sequence, so even if the allowable temperature of the control device was lower than that of the pump, it was still effective. This has the effect of providing effective cooling.

Further, according to the present invention, since the pump chamber is lined with the sound-absorbing material and is provided with a ventilation duct, the operating noise of the pump and the sound of the cooling air can be reduced, and there is an effect of reliably achieving low noise.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are a front sectional view and a side sectional view showing a first embodiment of the low-noise water supply device of the present invention, and FIG. 2 is a sectional view of the main part showing a modified example of the intake port. Figure, Figure 3 (a
) and (b) are a front sectional view and a side sectional view showing a second embodiment of the low-noise water supply device of the present invention. FIGS. 4(a) and 4(b) are schematic diagrams and side views showing other embodiments of the low-noise water supply device of the present invention, and FIG. 5(a)
and (b) is a schematic diagram showing still another embodiment of the low-noise water supply device of the present invention and a front view thereof, and FIG. 6(a),
(b) and (c) are a cross-sectional plan view, a cutaway front view, and a cutaway side view showing an example of the configuration of a conventional water supply device. la, lb...pump, A...pump chamber, 2...
・Control device, B...control room, 21...intake port,
22...Connection route. 23...Ventilation duct, 26...Fan.

Claims (1)

[Claims] 1. A pump room in which a pump is installed and a control room in which a control device is installed are partitioned, and an intake port for taking in outside air is provided in the control room, and a connection between the control room and the pump room is formed. forming a connecting path between the pump chambers, having a fan in the pump chamber, and providing a ventilation duct connected to the outside;
The pump room is lined with a sound-absorbing material that has a heat insulating effect, and the fan takes outside air into the control room from the intake port, and forces the taken air through the communication path, the pump room, and the ventilation duct in sequence. A low-noise water supply device characterized by being configured to discharge water to the outside.