JPH0648654U - Circulation pump unit in bathroom - Google Patents

Abstract

(57) [Summary] [Purpose] In a circulating pump unit in a bathroom, ventilation is used to effectively cool the entire outer case and the weak parts such as the controller, which enables continuous operation for a long time. to enable. In a circulating pump unit for a bathroom, which is provided with a circulating pump 5 connected to a bathtub, a motor 7 for driving the circulating pump 5, which has a self-cooling fan 6 inside the casing, and an exterior case 9, the casing of the motor 7 Exhaust pipe 11 for sending exhaust air from the outside of the bathroom, and exterior case 9 from the outside of the bathroom
An intake pipe 12 for introducing outside air is provided in the vicinity of the electronic circuit portion 8 inside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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]

[Prior art]

 In devices such as jet baths that circulate bath water between the outside and the bath, a circulation pump unit is attached to the bath. This circulation pump unit is often installed in the bathroom. The conventional structure is shown in FIG.

In the figure, reference numeral 21 denotes a bathroom, and 22 denotes a wall thereof. The circulation pump unit includes a circulation pump 23, a motor 24 for driving the circulation pump 23, a controller 25, and an outer case 26.

A suction pipe 27 and a discharge pipe 28 from the bathtub are connected to the circulation pump 23. The motor 24 is directly connected to the circulation pump 23. The outer case 26 seals the circulation pump 23, the motor 24, and the controller 25 inside to shield them from moisture in the bathroom, and is installed on the floor of the bathroom 21 by legs 29.

Here, since the motor 24 generates heat as it is driven, a motor having a self-cooling fan 30 inside the casing is used for this. An intake pipe 31 opening to the outside of the bathroom is connected to the intake port of the casing, and an exhaust pipe 32 opening to the outside of the bathroom is connected to the exhaust port of the casing. Therefore, during the rotation of the motor 24, 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 the motor 24 and the circulation pump 23 are not ventilated, so that the operation is continued for a long time. Then, the temperature in the outer case 26 gradually rises, which may adversely affect the operation of a heat-sensitive portion such as the controller 25.

In view of the above problems, the present invention makes it possible to effectively cool 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. And to enable continuous operation for a long time.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention covers a circulation pump to which a suction pipe and a discharge pipe from a bathtub are connected, a motor for driving the circulation pump, which has a self-cooling fan in a casing, and these. In a bathroom circulation pump unit equipped with an exterior case, it 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 from the outside of the bathroom into the exterior case. The intake pipe is configured to open in the vicinity of the electronic circuit section in the exterior case.

[0009]

[Action]

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

[0010]

【Example】

 Hereinafter, the details of the present invention will be described based on each embodiment shown in FIGS. First, FIG. 1 is a longitudinal 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. It is the same as the conventional circulation pump unit described above in that it is provided with an outer case 9 that covers these. 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 exterior case 9 from the outside of the bathroom 1 are provided. And an intake pipe 12 for introducing outside air.

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 outer side opening to the outside of the bathroom 1 like the exhaust pipe 11, and has an opening 12a in the compartment 14 that houses the controller 8 in the outer case 9. 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 14 a formed at one location.

In the above configuration, 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 ducted. It is sent to the outside of the bathroom 1 through the exhaust pipe 13 and the exhaust pipe 11.

Due to this exhaust, the inside of the exterior case 9 has a negative pressure, so that the outside air outside the bathroom 1 is sucked into the exterior case 9 through the intake pipe 12, and 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 other parts in the outer case 9, flows in the other parts, 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. It

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, since the introduced outside air first comes into contact with the controller 8, the controller 8, which is weak against heat, is cooled most strongly, and there is no risk of the controller 8 being adversely affected by the temperature rise.

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

FIG. 2 is a vertical cross-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 the outer case 9. The 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 that branches from the duct 13 and opens near the side wall of the outer case 9 is provided. By this bypass pipe 17, a part of the exhaust gas from the casing of the motor 7 is returned to the inside of the outer case 9 to agitate the air inside the outer case 9, so that the temperature inside the outer case 9 is further increased. 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]

[Effect of device]

 As described above, in 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, and the temperature rise of the outer case occurs. In addition, the external air introduced suppresses the strongest cooling of electronic circuit parts such as the controller, which is vulnerable to heat. It becomes possible to roll.

[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) 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.