JPH0719468Y2 - Circulation pump unit in bathroom - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation pump unit installed in a bathroom for circulating bath water, and more particularly to a ventilation structure for an outer case.

[0002]

2. Description of the Related Art In a device such as a jet bath which circulates bathtub water with the outside of the bathtub, a circulation pump unit is attached to the bathtub. This circulation pump unit is often installed in a bathroom. The conventional structure is shown in FIG.

In the figure, reference numeral 21 indicates a bathroom and 2
2 is the wall. The circulation pump unit includes a circulation pump 23, a motor 24 for driving the circulation pump 23, and a controller 25.
And an outer case 26.

A suction pipe 27 and a discharge pipe 28 from the bath are connected to the circulation pump 23. Motor 24
Is directly connected to the circulation pump 23. Exterior case 26
Is for sealing the circulation pump 23, the motor 24, and the controller 25 inside to block them from moisture in the bathroom, and is installed on the floor of the bathroom 21 by the legs 29.

Since the motor 24 generates heat as it is driven, a motor having a self-cooling fan 30 in its casing is used for this purpose. An intake pipe 31 that opens to the outside of the bathroom is connected to the intake port of the casing, and an exhaust pipe 32 that also opens to the outside of the bathroom is connected to the exhaust port of the casing. Therefore, while the motor 24 is rotating, the outside air is taken in from the outside of the bathroom by the self-cooling fan in the casing and is exhausted to the outside of the bathroom through the exhaust pipe 32, and the generated heat is radiated by this ventilation. Has become.

[0006]

By the way, in the ventilation structure as described above, the temperature rise of the motor 24 and the circulation pump 23 itself is suppressed, but the air around it is not ventilated, so if the operation is continued for a long time. However, the temperature in the outer case 26 may gradually rise, which may adversely affect the operation of the heat-sensitive portion such as the controller 25.

In view of the above problems, the present invention enables effective cooling of not only the motor and the circulation pump but also the entire outer case and the heat-sensitive portion such as the controller by ventilation. The challenge is to enable long-term continuous operation.

[0008]

In order to achieve the above object, the present invention has a circulation pump to which a suction pipe and a discharge pipe from a bath are connected, and a self-cooling fan for driving the circulation pump in a casing. In a bathroom circulation pump unit including a motor and an outer case that covers these, an exhaust pipe that sends exhaust gas from the motor casing to the outside of the bathroom, and an intake pipe that introduces outside air from the outside of the bathroom into the outer case And the intake pipe is opened in the vicinity of the electronic circuit section in the outer case.

[0009]

In the above structure, outside air is introduced into the outer case through the intake pipe by the rotation of the self-cooling fan of the motor during operation. This outside air first cools the electronic circuit part, then the other parts inside the outer case, then flows into the casing of the motor to cool the inside of the casing, and then flows out of the bathroom through the exhaust pipe. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to each embodiment shown in FIGS. First, FIG. 1 is a vertical sectional view of a circulation pump unit according to a first embodiment of the present invention.

In FIG. 1, reference numeral 1 is a bathroom, and 2 is a wall thereof. The circulation pump unit of this embodiment includes a circulation pump 5 to which a suction pipe 3 and a discharge pipe 4 from a bath are connected, a motor 7 having a self-cooling fan 6 in a casing for driving the same, a controller 8 and the like. It is the same as the above-mentioned conventional circulation pump unit in that it is provided with an outer case 9 for covering the. Reference numeral 10 is a leg of the outer case 9.

The circulation pump unit of this embodiment is characterized by a ventilation structure, and an exhaust pipe 11 for sending the exhaust gas from the casing of the motor 7 to the outside of the bathroom 1 and an outside air introduced from the outside of the bathroom 1 into the exterior case 9. And an intake pipe 12 that operates.

The exhaust pipe 11 has an outer side opening to the outside of the bathroom 1 and an inner side communicating with an exhaust port of a casing of the motor 7 through a duct 13. On the other hand, the intake pipe 12 has an outside opening to the outside of the bathroom 1 like the exhaust pipe 11,
In the outer case 9, an opening 12 a is formed in the compartment 14 that houses the controller 8. The compartment 14 is partitioned by a partition wall from other parts inside the outer case 9, and communicates with other parts inside the outer case 9 through a communication port 14a formed at one location.

In the above structure, during operation, the self-cooling fan 6 also rotates with the rotation of the motor 7, so that the air in the outer case 9 is sucked into the casing of the motor 7, and this sucked air is transferred to the duct 13. And is discharged to the outside of the bathroom 1 through the exhaust pipe 11.

Due to this exhaust, the inside of the exterior case 9 becomes a negative pressure, so that the outside air outside the bathroom 1 is sucked into the exterior case 9 through the intake pipe 12, but this outside air flows into the compartment 14. Since it contacts the controller 8, first,
The controller 8 is cooled. After that, it flows out to the other part in the outer case 9, flows in the other part, then flows into the casing of the motor 7, cools the inside of the casing of the motor 7, and is discharged to the outside of the bathroom 1. .

By this ventilation, not only the motor 7 and the circulation pump 5 are cooled, but also the entire inside of the outer case 9 is cooled, so that the temperature rise of the outer case 9 is suppressed. Moreover, the outside air introduced is first the controller 8
Since the controller 8 which is vulnerable to heat is cooled most strongly, there is no risk of the controller 8 being adversely affected by the temperature rise.

By the way, the outer case 9 has a closed structure in order to prevent intrusion of water and moisture due to flooding. However, even in the closed structure, water may accumulate inside due to water leakage or dew condensation, and in the worst case, There is a risk of electric leakage. The second embodiment shown in FIG. 2 addresses such a problem.

FIG. 2 is a vertical sectional view of a circulation pump unit according to a second embodiment of the present invention. In this embodiment, a water drain hole 15 having a small diameter is formed at the bottom of an outer case 9. Water that collects in the outer case 9 due to water leakage or dew condensation is discharged through the drain holes 15. The drain hole 15 may be provided with a float valve 16 opened by the buoyancy of water or a tongue-shaped valve opened by the weight of water. Since the other parts of this embodiment are the same as those of the first embodiment, the parts corresponding to those of the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 3 is a vertical sectional view of a circulation pump unit according to a third embodiment of the present invention. In this embodiment, a bypass pipe 17 is provided that branches from the duct 13 and opens near the side wall of the outer case 9. This bypass pipe 17
As a result, a part of the exhaust gas from the casing of the motor 7 flows back into the exterior case 9 and agitates the air inside the exterior case 9, so that the temperature rise inside the exterior case 9 is more effectively suppressed. . The other parts of this embodiment are the same as those of the first embodiment, and the parts corresponding to those of the first embodiment are designated by the same reference numerals.

[0020]

As described above, according to the present invention, not only the motor and the circulation pump are cooled by the ventilation by the self-cooling fan of the motor, but also the entire inside of the outer case is cooled. The temperature rise of the case is suppressed, and since the introduced outside air cools the electronic circuit section such as the controller, which is weak against heat, most strongly, the controller is not affected by the temperature rise. Enables continuous operation for hours.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a circulation pump unit according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of a circulation pump unit according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional view of a circulation pump unit according to a third embodiment of the present invention.

FIG. 4 is a vertical sectional view of a conventional circulation pump unit.

[Explanation of symbols]

 1 Bathroom 2 Bathroom wall 3 Suction pipe 4 Discharge pipe 5 Circulation pump 6 Self-cooling fan 7 Motor 8 Controller (electronic circuit part) 11 Exhaust pipe 12 Intake pipe

Claims (1)

[Scope of utility model registration request] 1. A bathroom circulation pump comprising a circulation pump to which a suction pipe and a discharge pipe from a bathtub are connected, a motor having a self-cooling fan for driving the same in a casing, and an outer case covering these. The unit has an exhaust pipe for sending the exhaust gas from the motor casing to the outside of the bathroom, and an intake pipe for introducing outside air into the exterior case from the outside of the bathroom, and the intake pipe is an electronic circuit part in the exterior case. A circulation pump unit for a bathroom, which is opened in the vicinity of.