JPH109135A - Liquid supply device with noise arrester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid supply device with a noise arrester which can effectively perform heating and noise insulation treatment of the device. SOLUTION: A liquid supply device comprises pump motors 2, 2 and a control board 5. Pump motors 2, 2 have motor parts and pump parts which supply liquid through rotation by the motor parts. A control board 5 controls operation of the motor parts of the pump motors 2, 2. The whole of the supply device is housed in a closed vessel 30. The motors and a heating unit (an inverter) inside the control board have liquid cooling structure by the use of liquid suppled by the pump.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid supply device for supplying a liquid such as water by a pump, and more particularly to a liquid supply device provided with a soundproof device provided with a soundproof function in the liquid supply device.

[0002]

2. Description of the Related Art Conventionally, a liquid supply device has been used, for example, as a water supply device for an apartment house. FIGS. 12A and 12B show a conventional liquid supply device of this type, wherein FIG. 12A is a front view and FIG. 12B is a side view.

[0003] As shown in the figure, a pump unit 103 and a motor unit 1 are provided on one unit base 101.
The system includes two pump motors 102, 102, a pressure tank 106, and a control panel 105.

The pump portions 103, 103 of the two pump motors 102, 102 have pump suction ports 11 respectively.
0, 110 are provided, and one discharge port 109 is provided via one discharge communication pipe 111. The pressure tank 106 is connected to a discharge communication pipe 111 by a pipe 113.
It is connected to the.

[0005] The operation of the present liquid supply apparatus is generally performed as follows. That is, the discharge port 109 of the liquid supply device
When the liquid is used on the load side connected to the, the liquid supply to the load side is first started from the high pressure tank 106. When the pressure in the pressure tank 106 decreases to the starting pressure value of the pump motors 102, 102, the pump motors 102, 102 are started by a signal from the pressure sensor 112, whereby liquid is supplied to the load side. When the amount of liquid supplied to the load side decreases, this is
7, the operation of the pump motor 102 is stopped by the signal.

As described above, according to this liquid supply device, the pump motors 102, 102 are started when liquid is needed on the load side, and the pump motors 102, 102 are started when liquid is not needed on the load side.
102 is stopped. The operation control of the pump motors 102 and 102 by various signals is performed by the control panel 105.

[0007]

This liquid supply device generally handles drinking water in many cases, and is used as a water supply device for an apartment house. In many cases, the pump is installed near the house, so it is necessary to consider the noise generated when the pump motor is operated in the house near the liquid supply device.

When noise is taken into consideration, generally, the entire liquid supply device is covered with a soundproof cover, and a sound absorbing material or the like is adhered to the inner surface of the soundproof cover. There is a unit 104 and a control panel 105, and a semiconductor which is weak to heat is often used for control in the control panel 105.

Therefore, for cooling, the entire liquid supply device cannot be sealed with the soundproof cover. For example, as shown in FIG. Soundproof cover 12 to radiate heat to the outside
0 is provided with an outside air intake 122 and an exhaust port 124.

Of course, the outside air inlet 122 and the exhaust port 12
Since the noise of the liquid supply device leaks from FIG. 4, silencers 121 and 123 are attached to these, respectively.

The electric motor 104 used in the liquid supply device
This state is sufficient when the output of the motor (see FIG. 12) is small or when the outside air temperature is low. However, when the output of the electric motor unit 104 is large, these ventilations are not sufficient in summer or the like where the outside air temperature is high. .

In such a case, as shown in FIG. 14, an intake ventilation fan 125 and an exhaust ventilation fan 126 for forced ventilation are further attached to the silencers 121 and 123.

However, in this case, both ventilation fans 12
Since noise during operation of the 5,126 itself becomes a problem, a silencer with higher performance is required.

As described above, when the entire liquid supply device is covered with the soundproof cover and the internal motor unit and the heat generation in the control panel are to be processed by air ventilation, not only the processing of the sound of the liquid supply device itself but also the ventilation fan is performed. Because the processing of the sound of the secondarily occurs,
It is necessary to perform double soundproofing, and an expensive soundproofing device is required.

The present invention has been made in view of the above points, and an object of the present invention is to provide a liquid supply device with a soundproofing device capable of effectively performing both heat generation processing and soundproofing processing of the apparatus.

[0016]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a pump motor having a motor section and a pump section which is driven by the motor section to supply liquid.
A control panel for performing operation control of a motor section of the pump motor, wherein the entire liquid supply apparatus is housed in a closed container, and the motor section and a heating element in the control panel are connected to each other. Each of them has a liquid cooling structure using the handling liquid supplied by the pump section.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a diagram showing a liquid supply device according to an embodiment of the present invention, and FIG.
FIG. 2B is a front view (both showing a state in which the closed container 30 is cut). FIG. 2 is a schematic diagram showing a pipe connection structure of the liquid supply device.

As shown in both figures, this liquid supply device is entirely housed in a closed container 30. In this liquid supply apparatus, two pump motors 2 and 2 are installed in parallel in the vertical direction, and curved pipes 17 and 17 are provided at the lower ends thereof.
And the two curved pipes 17 are connected to one suction collecting pipe 16.
The suction port of the suction collecting pipe 16 is connected to the bypass pipe 15 facing in the vertical direction, and an intermediate portion of the bypass pipe 15 is connected to the vicinity of the center of the suction pipe 14 facing in the horizontal direction. I have. Both ends of the suction pipe 14 are supported by left and right side walls 32, 33 of the closed container 30, and one end (on the left side wall 32) is closed by a closing flange 13, whereby the other end (right side) of the suction pipe 14 is provided. Only the wall 33 side)
And A mating flange 9-2 is flange-connected to the suction port 10.

In addition, check valves 8, 8 are attached to the ends of the two bent pipes 17, 17 on the side connected to the suction collecting pipe 16, respectively, so that only water moves in the direction of the pump motors 2, 2. Is possible.

On the other hand, the upper ends of the two pump motors 2 are
Each of them is connected to one discharge collecting pipe 18 via the flow switches 7 and 7. The discharge collecting pipe 18 is connected to the upper end of the bypass pipe 15 and is connected to substantially the center of one adjacent discharge pipe 19. The discharge pipe 19 has both left and right walls 32 and 33 at both ends thereof.
One end (on the left side wall 32) is closed by the closing flange 12, whereby only the other end of the discharge pipe 19 (on the right side wall 33) is used as the discharge port 9. The companion flange 9-2 is also flange-connected to the discharge port 9.

A bypass check valve 15-1 is housed in a connection portion between the bypass pipe 15 and the discharge pipe 18 so that the inside of the bypass pipe 15 is discharged from the suction pipe 16 side to the discharge pipe 18. Only the movement of the fluid moving to the side is enabled.

A control panel 5 is provided in the upper part of the closed container 30.
The pressure tank 6 is installed on the side of the discharge pipe 19.

The control panel 5 is provided with a heat sink cooling water outlet 5-1 and a heat sink cooling water inlet 5-2. The heat sink cooling water outlet 5-1 is connected to the bypass pipe 15-1 by a pipe 51-1. It is connected to the upstream side of the stop valve 15-1 and the heat sink cooling water inlet 5-2 is discharged by a pipe 15-2 and connected to the collecting pipe 18. An electromagnetic on-off valve 5-3 is attached to the pipe 15-2.

Although an inverter (variable speed device) not shown is housed in the control panel 5, this inverter is attached to a heat sink for heat dissipation (not shown). A pipe for cooling water is embedded in the heat sink, and both ends of the pipe are connected to the heat sink cooling water inlet 5-2 and the heat sink cooling water outlet 5-1. A temperature sensor (not shown) for detecting the temperature of the heat sink is attached to the heat sink.

Next, the pressure tank 6 is connected to a discharge pipe 19 by a pipe.

On the other hand, as shown in FIG. 2, the pump motor 2 is provided with a pump section 3 at a lower portion, a motor section 4 at an upper portion, connecting both drive shafts, and storing the whole in a case. Have been. When the pump motor 2 is driven, the water sucked into the pump section 3 from the curved pipe 17 side is discharged to the flow switches 7, 7 after passing around the motor section 4. I have. That is, the motor unit 4 is configured to be cooled by the supplied water (handling water) itself.

The entire liquid supply device is incorporated on a unit base 1, and the unit base 1 is mounted on a bottom plate 35 of a sealed container 30 described below via a vibration isolator 20. .

FIG. 3 is an exploded perspective view showing the closed container 30. As shown in FIG. FIG. 4 is an enlarged view of a portion R shown in FIG. As shown in FIG.
, Left side wall 32, right side wall 33, rear side wall 34
Each side of the six surfaces of the bottom plate 35 and the front side wall 36 is shown in FIG.
As shown in the figure, the vibration damping rubber 30-1 made of a rubber material such as a rubber packing is interposed and connected to each other. The left wall 32 and the right wall 33 are each provided with two openings 52.

Next, FIG. 5 shows the closed container 3 of the discharge pipe 19.
1A is a left side view, and FIG. 1B is a cross-sectional view of a main part (S in FIG. 1).
FIG. As shown in FIG.
In the pipe outlet opening 52 provided in the right side wall portion 33, the discharge flange 19-1 and the companion flange 9-2 provided at the end of the discharge pipe 19 inside the sealed container 30 are bolted.
It is flange-connected by a nut A.

A female screw 9-2a is provided inside the piping of the companion flange 9-2, and an external piping (not shown) is screwed to the female screw 9-2a.

Here, a sheet packing 9- is provided at a flange connection portion between the discharge flange 19-1 and the companion flange 9-2.
1 is pinched. This sheet packing 9-1 is formed of a disc-shaped rubber material, and the discharge pipe 1 is provided at the center thereof.
A through hole 9-1 a having substantially the same inner diameter as the inner diameter of the opening 9 is provided, and the outer diameter thereof is formed larger than the inner diameter of the opening 52.

The sheet packing 9-1 is sandwiched and tightly attached to the outer surface of the right side wall 33 around the opening 52 by a packing retainer 9-3 having a ring-shaped plate divided into two parts and a bolt / nut B. Fixed. That is, the opening 52 is sealed by the sheet packing 9-1.

The packing retainer 9-3 is divided into two parts because the packing retainer 9-3 is attached after screwing an external pipe (not shown) to the companion flange 9-2. This is so that it may be configured simply by a ring-shaped plate before the external piping is attached.

The other end of the discharge pipe 19 shown in FIG. 1 has a structure which is flange-connected to the opening 52 of the left side wall portion 32 through a sheet packing in the same manner as shown in FIG. The only difference is that the discharge pipe 19 is closed by attaching the closing flange 12 instead of 9-2.
The both ends of the discharge pipe 19 are configured in this manner because the connection position of the external pipe can be easily reversed simply by changing the mounting position of the companion flange 9-2 and the closing flange 12 left and right.

As with the structure shown in FIG. 5, a companion flange 9-2 and a closing flange 13 are attached to both ends of the suction pipe 14 shown in FIG.

Next, the operation of the liquid supply device with the soundproof device will be described mainly with reference to FIG.

When the liquid is used on the load side of the liquid supply device, first, high-pressure water in the pressure tank 6 attached to the discharge pipe 19 is supplied to the load side.
When the internal pressure becomes equal to or lower than a predetermined pressure, the pump motors 2 and 2 start to start supplying water.

When the pump motor 2 starts, the suction pipe 14
The treated water sucked from the suction port 10 of the
5 to the suction collecting pipe 16 and the check valve 8 and the bent pipe 1
7, is introduced into the pump unit 3 via the outer periphery of the motor unit 4, is discharged to the upper part of the pump motor 2 while cooling the motor unit 4, and is discharged via the flow switch 7 to collect the pipe. 18 to the discharge pipe 19, the discharge port 9
It is pumped to.

The operation of the pump motor 2 is controlled by a variable speed device (not shown) in the control panel 5 so that the discharge pressure of the pump motor 2 becomes constant.
The operation is performed so as to adjust the operating rotation speed.

When the amount of water used on the load side decreases and the flow switch 7 detects this, the pump motor 2 stops. The operation / stop of the pump motor 2 is performed as described above.

The reason why the bypass pipe 15 and the bypass check valve 15-1 are provided is that the water pressure on the suction port 10 side is
When the operating pressure of the pump is higher than the operating pressure (the target value by the constant discharge pressure control), the operation of the pump motor 2 is stopped, and the pump motor 2 is stopped directly from the suction port 10 through the suction pipe 14, the bypass pipe 15, and the bypass check valve 15-1. This is because water can be supplied from the discharge collecting pipe 18 to the discharging pipe 19.

When the temperature sensor attached to the heat sink of the inverter in the control panel 5 detects that the temperature of the heat sink has exceeded a predetermined value, the solenoid on-off valve 5-3 is opened to cool the heat sink with a high pressure. After water is passed from the water inlet 5-2 to the cooling water pipe in the heat sink to cool the heat sink (i.e., the inverter), the bypass pipe 15 having a low pressure is supplied from the heat sink cooling water outlet 5-1. Returned to primary side.

When the temperature of the heat sink becomes lower than a predetermined value, the solenoid on-off valve 5-3 is closed to stop the flow of the cooling water.

When a heating element other than the inverter is provided in the control panel 5, the cooling structure described above may be used for cooling the heating element.

As described above, since the heat generated by the motor unit 4 and the heat generated by the heat generating element in the control panel 5 are both collected and cooled by the handling liquid supplied by the liquid supply device, heat is externally supplied. Is not transferred. Therefore, the liquid supply device can be completely sealed by the closed container 30 as in the above-described embodiment, so that noise is not transmitted to the outside.

When the vibrations of the equipment constituting the water supply device are large, the vibrations are transmitted to the unit pace 1 and the side walls 32, 33,
There is a possibility that noise is generated due to the vibration being transmitted to the ceiling 34 and the ceiling 34.

However, in the case of the present embodiment, the vibration isolating rubber 30-1 is attached between the bottom plate 35, each of the side walls 32, 33, 34, 36 and the ceiling 31, so that the vibration of the bottom plate 35 Are the other members 31, 32, 33, 34, 36
And the noise is prevented.

When the vibration is large, as shown in FIGS. 8 and 9, the insulating rubber 6 serving as a cushioning material is provided on the bottom of the bottom plate 35.
A closing plate 63 that covers the entire bottom surface may be attached via 1. As a result, even if the operating vibration of the pump motor 2 is transmitted to the bottom plate portion 35 and noise is generated from the lower surface thereof, the noise is not leaked to the outside by being blocked by the closing plate 63 and the closing plate 63 itself is insulated by the insulating rubber 61. Also does not vibrate.

Even in the case where the vibration is larger or the sound needs to be further reduced, the vibration isolating device 20 can be attached between the unit base 1 and the bottom plate 35 as in the present embodiment. Can be further increased, and the object can be achieved.

On the other hand, in the above-mentioned water supply device, both end portions of the suction pipe 14 and the discharge pipe 19 in addition to the bottom plate 35 are formed on the left and right side walls 32,
Since the connection is made to the connection 33, the vibration of the water supply device is transmitted to the entire closed container 30 from the connection portion, and the noise may leak to the outside.

However, in the case of the present embodiment, as described with reference to FIG. 5, both ends of the discharge pipe 19 are provided on the left and right side walls 32, 33 by the rubber-made sheet packing 9-1.
Is connected to the discharge pipe 19
The vibration is absorbed by the sheet packing 9-1 and is not transmitted to the closed container 30. Therefore, there is no fear that the noise leaks to the outside. In addition, the sheet packing 9 made of rubber material
By using -1, even if there is a deviation due to a mechanical dimensional error in the take-out position of the discharge pipe 19, the deviation is absorbed by the sheet packing 9-1, whereby the function of the closed structure is maintained. . The same applies to the suction pipe 14.

The sheet packing 9- having the structure shown in FIG.
In the case of 1, when the vibration direction of the discharge pipe 19 is the X direction shown in FIG. 5, that is, in the axial direction of the discharge pipe 19, the sheet packing 9-1 is deformed in the bending direction. Although the vibration of 19 is not transmitted to the closed container 30,
When the vibration direction of the discharge pipe 19 is the Y and Z directions shown in FIG. 5, that is, the plane direction perpendicular to the axis of the discharge pipe 19, the sheet packing 9-1 is pulled, so that the vibration is sufficiently insulated. May be lost.

In order to further insulate the vibrations in the Y and Z directions, as shown in FIG. 10A, the inside of the portion of the sheet packing 9-4 fixed by the packing presser 9-3 is secured. A ring-shaped convex portion (vibration absorbing means) 9-5 may be provided in which the surface of the portion is deformed so as to protrude outward in a substantially rectangular shape in cross section.

With such a configuration, even if the vibration direction of the discharge pipe 19 is the Y or Z direction, the ring-shaped convex portion 9-
The vibration of the pump motor 2 in the X, Y, and Z directions is transmitted to the discharge pipe 19, but is not transmitted to the closed container 30 because the vibration is easily absorbed by the deformation of the portion 5.

As shown in FIG. 10 (b), in order to reliably insulate the vibrations in the Y and Z directions, ring-shaped projections (see FIG. 10B) protruding toward the side wall 33 are formed on the outer circumference of the sheet packing 9-6. Vibration absorbing means) 9-7, and the ring-shaped protrusion 9
-7 may be sandwiched between the packing presser 9-3 and the side wall 33.

Even with such a configuration, the vibration of the discharge pipe 19 in the Y and Z directions can be easily absorbed.

When it is necessary to further reduce the noise, a sound insulating material such as a lead plate is attached to the inner surface of the closed container 30, or the inside of the closed container 30 is used to reduce the sound pressure in the closed container 30. A sound absorbing material (made of glass wool or the like) can be attached to the inner surface of the sealed container 30.

With the above configuration, it is possible to provide a structure having a very large soundproofing effect.

By the way, regarding the relationship between the temperature of the liquid handled by the liquid supply device and the outside air temperature, for example, when the outside air temperature is close to 30 ° C. in summer and the humidity is high, when the handled liquid is well water, for example, the temperature is 14 ° C. This temperature difference causes dew condensation due to the humidity of the outside air in the water-flowing portion (the portion from the suction pipe 14 to the discharge pipe 19) of the liquid supply device. Water accumulates in the inside 30 and internal corrosion proceeds.

In order to prevent this, it is necessary to provide a drain mechanism at the bottom of the closed vessel 30 to drain the drain. However, when a normal drain mechanism is simply provided, there is a problem that noise leaks from the location of the drain mechanism to the outside, and the sealed container 30 becomes meaningless.

FIG. 6 is a view showing a bottom plate portion 35 to which a drain mechanism configured to prevent noise from leaking to the outside is mounted.
2A is a front view, and FIG. 1B is a right side view.

As shown in the figure, the drain mechanism is provided with a drain collecting socket 1-
An inclined surface 1-1 and an inclined surface 1-2 are provided on the side wall portion 35 so that the drain gathers toward the drain tube 3, and a drain pipe 1-4 is attached to the socket 1-3. The drain catch 1-5 is inserted into the catch 1-5 and filled with water to such an extent that the drain end of the drain pipe 1-4 is closed.

With this configuration, the sealed container 30
Condensation occurs in the inside, and the drain dropped on the bottom plate portion 35 is collected in the socket 1-3 by the inclined surfaces 1-1 and 1-2, discharged into the drain catch 1-5, and actively collected. . On the other hand, since the pipe end of the drain pipe 1-4 is always sealed with water, it is possible to prevent noise from leaking from the pipe end.

When a closing plate 63 similar to that shown in FIGS. 8 and 9 is attached to the bottom plate portion 35, the insulating rubber 61 similar to that shown in FIGS. The closing plate 63 may be attached via the.

FIG. 7 is a cross-sectional view of a main part showing a pipe take-out structure according to another embodiment different from the embodiment shown in FIG.

In this embodiment, the discharge pipe 19 protrudes outside from the opening 52 of the right side wall 33, and the discharge flange 19-1 provided at the end thereof is flange-connected to the companion flange 9-2. Separately, discharge pipe 19
A mounting flange 19-2 is welded to the outer periphery of the mounting flange 19-2, and the mounting flange 9-4 and the mounting flange 9-4 separately inserted into the discharge pipe 19 are bolted and nut C via a sheet packing 9-1. The sheet packing 9-1 is tightly fixed to the right side wall 33 by a packing presser 9-3 and a bolt / nut B.

Even with this configuration, the seat packing 9
The opening 52 is sealed by -1.

It goes without saying that the liquid supply device according to the present invention may be used for supplying a liquid other than water.

[0069]

As described in detail above, the present invention has the following excellent effects. Since both the pump motor and the heating element in the control panel are cooled by the liquid cooling structure using the liquid itself handled by the liquid supply device, the entire liquid supply device can be sealed in one closed container. Thus, the noise of the liquid supply device can be easily soundproofed.

The opening provided in the sealed container was sealed by interposing a sheet packing made of rubber at the flange connection portion of the pipe drawn out from the inside of the sealed container to the outside.
The vibration of the internal equipment is not transmitted to the closed container, so that sound can be prevented. In addition, since rubber material is used for seat packing,
An error in the position of the pipe with respect to the opening of the closed container can be easily absorbed. In particular, when a substantially ring-shaped vibration absorbing means is provided on the sheet packing, vibration in a plane direction perpendicular to the axis of the pipe is effectively absorbed, and transmission of vibration to the closed container can be further effectively prevented. Further, when the packing retainer has a structure in which the ring is divided into two parts, it is possible to attach the packing retainer after connecting the piping to the external piping.

Since the bottom plate, the ceiling, and the plurality of side walls constituting the closed container are connected to each other with the vibration-isolating rubber made of rubber material interposed therebetween, the vibration of the liquid supply device is restricted to each side wall of the closed container. It is not transmitted to the ceiling or the ceiling, and the airtightness of the airtight container is improved, so that sound leakage is eliminated and the soundproofing effect is improved.

Since a closing plate for covering the bottom surface of the closed container is attached to the bottom portion of the closed container via insulating rubber, vibration transmitted from the liquid supply device to the bottom surface of the closed container is cut off by the closing plate. Thus, no sound is transmitted to the closing plate due to the vibration of the bottom surface of the closed container, and the noise is completely shut off.

Since the vibration isolator is interposed at the joint between the liquid supply device and the bottom surface of the closed container, the vibration of the liquid supply device is not transmitted to the bottom surface of the closed container. No anti-vibration mount is required.

The whole device of the liquid supply device is assembled on the unit base, and the vibration isolator is interposed between the unit base and the bottom surface of the sealed container. When installing the equipment, all the equipment can be mounted on the unit base, inspection performance etc. can be measured in this state, and finally the base unit built-in type liquid supply device in a closed container can be easily sealed A liquid supply device having a structure can be provided.

The drain collecting means is provided on the bottom surface of the sealed container, and the drain pipe drawn out from the drain collecting means is sealed with water, so that the drain can be collected without leaking noise to the outside.

[Brief description of the drawings]

FIG. 1 is a view showing a liquid supply device according to an embodiment of the present invention, wherein FIG. 1 (a) is a side view and FIG. 1 (b) is a front view.

FIG. 2 is a schematic diagram showing a piping connection structure of a liquid supply device.

FIG. 3 is an exploded perspective view showing the closed container 30.

FIG. 4 is an enlarged view of an R portion shown in FIG.

FIG. 5 is a view showing a pipe take-out structure of the discharge pipe 19 from the closed vessel 30 to the outside, and FIG.
FIG. 3B is a sectional view of a main part.

FIGS. 6A and 6B are views showing a bottom plate portion 35 to which a drain mechanism according to the present invention is attached, wherein FIG. 6A is a front view and FIG.
Is a right side view.

FIG. 7 is a sectional view of a main part showing a pipe take-out structure according to another embodiment.

FIG. 8 is a main part side view showing an embodiment in which a closing plate 63 is attached to the bottom plate portion 35.

FIG. 9 is an enlarged view of a portion T in FIG. 8;

FIGS. 10A and 10B are cross-sectional side views of main parts showing another embodiment of the seat packing.

FIG. 11 is a side sectional view of a main part showing a state in which a closing plate 63 is attached to a bottom plate 35 with a drain mechanism.

FIG. 12 is a view showing a conventional liquid supply device, and FIG.
Is a front view, and FIG. 2B is a side view.

FIG. 13 is a view showing a conventional liquid supply device with a soundproof cover.

FIG. 14 is a view showing a conventional liquid supply device with a soundproof cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit base 1-4 Drain piping 2 Pump motor 3 Pump part 4 Motor part 5 Control panel 9-1 Seat packing 9-3 Packing retainer 20 Vibration isolator 30 Hermetic container 30-1 Vibration-proof rubber 31 Ceiling part 32 Left side wall part 33 Right side wall part 34 Rear side wall part 35 Bottom plate part 36 Front side wall part 52 Opening 61 Insulating rubber 63 Closing plate 9-5 Ring-shaped convex part (vibration absorption means) 9-7 Ring-shaped projection (vibration absorption means)

Claims (12)

[Claims] 1. A liquid supply apparatus comprising: a pump motor having an electric motor section, a pump section that is driven to rotate by the electric motor section to supply liquid, and a control panel that controls the operation of the electric motor section of the pump motor. In addition, the entire liquid supply device is housed in a closed container, and both the electric motor unit and the heating element in the control panel have a liquid cooling structure using the handling liquid supplied by the pump unit. A liquid supply device with a soundproofing device. 2. A liquid cooling structure for cooling a heating element in the control panel, wherein the temperature of the heating element itself or the temperature around the heating element is detected by a temperature sensor, and when the temperature is higher than a predetermined value, the treatment is performed. 2. A supply with a soundproofing device according to claim 1, further comprising a liquid supply stopping means for passing the liquid through the heating element and stopping the passage of the handling liquid when the temperature becomes lower than a predetermined value. Liquid device. 3. A pipe drawn from the inside of the closed container to the outside is flange-connected at an opening for drawing a pipe provided in the closed container, and a sheet packing made of a rubber material is clamped at the flange connection portion. 3. The liquid supply device with a soundproofing device according to claim 1, wherein the outer shape of the sheet packing is formed larger than the opening, and the sheet packing is tightly fixed around the opening of the closed container by a packing press. 4. The packing presser according to claim 3, wherein the packing presser is formed in a shape obtained by dividing a ring into two.
A liquid supply device with a soundproof device according to the above. 5. The liquid supply device with a soundproof device according to claim 3, wherein said sheet packing is provided with a substantially ring-shaped vibration absorbing means. 6. The vibration absorbing means is constituted by a ring-shaped convex portion formed by deforming a surface of a portion inside a portion of the sheet packing fixed by the packing presser so as to protrude to one surface side. The liquid supply device with a soundproof device according to claim 5, wherein 7. The vibration absorbing means is provided with a ring-shaped projection formed by deforming a surface of a portion of the sheet packing fixed by the packing presser so as to protrude to one surface side, and The liquid supply device with a soundproof device according to claim 5, wherein the liquid supply device is sandwiched between a presser and a closed container. 8. The liquid supply device with a soundproofing device according to claim 1, wherein a closing plate for covering the bottom surface is attached to a bottom portion of the closed container via insulating rubber. 9. The airtight container according to claim 1, wherein the bottom plate, the ceiling, and the plurality of side walls are connected to each other with a vibration isolating rubber made of a rubber material interposed therebetween. A liquid supply device with a soundproof device according to 1 or 8. 10. The liquid supply device with a soundproof device according to claim 1, wherein the liquid supply device is mounted on a bottom surface of the closed container via a vibration isolator. 11. The soundproofing device according to claim 1, wherein the entire liquid supply device is mounted on a unit base, and the unit base is mounted on a bottom surface of the closed container via a vibration isolator. Liquid supply device. 12. The soundproofing according to claim 1, wherein a drain collecting means is provided on a bottom portion of the closed container, and a drain pipe for drawing out the drain collected by the drain collecting means is sealed with water. Liquid supply device with device.