CN109417328B

CN109417328B - Motor and garbage disposer

Info

Publication number: CN109417328B
Application number: CN201780038474.7A
Authority: CN
Inventors: 尾畑宇喜雄; 武田拓真
Original assignee: From Industry Co Ltd
Current assignee: From Industry Co Ltd
Priority date: 2016-07-07
Filing date: 2017-07-05
Publication date: 2021-06-11
Anticipated expiration: 2037-07-05
Also published as: KR102122694B1; CN109417328A; KR20190022730A; JP2018007504A; WO2018008680A1; JP6326097B2

Abstract

The motor (13) is provided with: a stator (20), a rotor (21), and a water control member (35), wherein the rotor (21) is disposed inside the stator (20) and rotates around a vertical axis, the water control member (35) is disposed between the stator (20) and the rotor (21) and prevents water leakage from wetting the stator (20), and the water control member (35) comprises: a water control cylinder (36) and a water control circular plate (37b), wherein the water control cylinder (36) is arranged between the stator (20) and the rotor (21), the water control circular plate (37b) covers the upper part of the rotor (21), an opening (37d) allowing the rotating shaft (22) of the rotor (21) to pass through is arranged at the center part of the water control circular plate, and the outer diameter part of the water control circular plate is connected with the inner surface of the water control cylinder (36) in a watertight manner.

Description

Motor and garbage disposer

Technical Field

The present invention relates to a motor and a garbage disposer including the motor.

Background

A garbage disposer is a device that is disposed under a sink in a kitchen, and that pulverizes garbage thrown in from the sink, mixes the pulverized garbage with water, and discharges the mixed garbage (for example, patent document 1). A motor for driving the garbage disposer is mounted at the lower part of the garbage disposer, and the output shaft of the motor protrudes toward the inside of a treatment chamber for crushing kitchen garbage. The output shaft of the motor has a shaft seal at a portion penetrating the bottom plate of the processing chamber, and prevents water leakage from the processing chamber. However, as a result of long-term use, there are cases where the shaft seal wears, and water in the treatment chamber leaks into the interior of the motor. When water leaks into the motor, the danger of electric leakage and electric shock is generated. Therefore, it is required to connect the garbage disposer to the earth leakage breaker (for example, patent document 1). Alternatively, the garbage disposer is required to be connected (grounded) to ground (for example, patent document 2).

However, there is a problem that, when a new house designed on the premise of use of a garbage disposer is not discussed, and a garbage disposer is installed in a sink of an existing house, a ground terminal is often not present in the vicinity, and therefore, it takes time to perform ground connection work. Further, since the cost corresponding to 2 to 3 of the cost of the garbage disposer main body and the installation cost is required as the ground connection cost, there is a problem that the burden on the consumer is large. Further, if the ground connection is made, although the danger of electric shock can be avoided, there is a problem that the malfunction of the garbage disposer and the like caused by the water immersion cannot be avoided.

Accordingly, the inventors of the present application have invented a motor provided with: a cylindrical water control member is disposed between the rotor and the stator, and leakage water entering the motor flows to the lower part of the motor through a space surrounded by the water control member and is discharged from the lower part of the motor to the lower part of the motor, and a patent is filed (japanese patent application No. 2014-76445 (hereinafter referred to as "prior application")). In the motor of the prior application, most of the water leakage entering the interior of the motor is discharged to the outside of the motor without wetting the stator. Therefore, a failure due to flooding of the stator can be prevented. Further, if the water control member is made of an insulating material, even if the rotor is immersed in water, conduction between the stator and the rotor does not occur.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 9-122526

Patent document 2: japanese Kokai publication No. 2006-520266

Disclosure of Invention

Problems to be solved by the invention

However, since the entry of the leakage water into the motor occurs during the operation of the garbage disposer, the leakage water entering the motor from above the motor collides with the rotating rotor, and is flicked by the centrifugal force to become a mist. The flicked droplets fly over the upper edge of the water control member and enter the space where the stator is placed, and the stator may be wet. Even if the amount of mist entering is small in 1 operation, if the mist repeatedly enters, the motor may fail. For example, there is a possibility that an insulating material of a coil of the stator is deteriorated and insulation breakdown occurs. Thus, the motor of the prior application has a problem that the stator cannot be completely prevented from being immersed by water leakage.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a motor that does not wet a stator even if droplets are generated by collision of water leakage entering the motor from above with a rotor or the droplets collide with the rotor, and a garbage disposer including the motor.

Means for solving the problems

In order to solve the above problems, an electric motor according to the present invention is an electric motor in which an output shaft is vertically disposed and the output shaft is mounted to protrude upward, the electric motor including: a housing, a stator fixed inside the housing, a rotor disposed inside the stator inside the housing and rotating around a vertical axis, and a water control member disposed between the stator and the rotor and preventing water leakage into the housing from wetting the stator, the water control member comprising: and a water control disk which is disposed inside the housing, is disposed between the stator and the rotor, has a center axis of rotation of the rotor, and nonwatertight partitions a space of the housing in which the stator is disposed and a space of the housing in which the rotor is disposed, and which is disposed inside the housing, covers an upper portion of the rotor, has an opening in a center portion through which a rotation shaft of the rotor passes, and has an outer diameter portion watertight connected to an inner surface of the water control cylinder.

The diameter of the opening of the water control disk may be smaller than the outer diameter of a bearing which is mounted on the upper portion of the housing and supports the rotating shaft of the rotor.

The water control disk may be provided with a conical inclined surface which descends from the outer diameter portion toward the opening.

The upper end of the water control cylinder may be located higher than the upper end of the stator.

The lower end of the water control cylinder may be set to be lower than the lower end of the stator.

The water control member may be made of an insulating material.

The garbage disposer of the present invention includes any one of the motors described above and is driven by the motor.

Effects of the invention

The motor of the present invention includes the water control cylinder and the water control circular plate, and therefore, when the water leakage entering the motor is repelled by the rotor to generate the mist, the mist can be prevented from scattering to the region where the stator is arranged. Therefore, the stator is not wetted with the mist, and the occurrence of a trouble due to wetting of the stator can be suppressed. In addition, the insulating material is used to form the water control cylinder and the water control circular plate, thereby obtaining the motor which can not generate conduction between the stator and the rotor even if water leakage enters. Therefore, the occurrence of leakage and electric shock can be prevented.

Since the garbage disposer of the present invention includes the motor, even if the sealing member sealing the space between the treatment chamber and the motor in a watertight manner is damaged, the motor is prevented from being broken by water leakage, and the motor is not likely to be broken.

Drawings

Fig. 1 is a sectional view illustrating a garbage disposer according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1, and is a sectional view showing a detailed structure of the motor.

Fig. 3 is a perspective view showing the shape of a water control cylinder provided in the motor shown in fig. 2.

Fig. 4 is a perspective view showing the shape of the splash avoiding member provided in the motor shown in fig. 2.

Detailed Description

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

Fig. 1 is a sectional view of a garbage disposer 1 according to an embodiment of the present invention, and illustrates the structure thereof. The garbage disposer 1 is a device that is attached to the lower side of the water tub 2, and that pulverizes kitchen garbage (not shown) discharged from the water tub 2 and discharges the pulverized garbage together with water, and includes an attachment flange 3, a connecting pipe 4, and a garbage disposer main body 5.

The mounting flange 3 is a plastic component inserted into the drain opening of the water tub 2, and is fastened and fixed to the water tub 2 by a nut 6. The raw material of the mounting flange 3 is not particularly limited, but is selected from raw materials having electrical insulation and corresponding mechanical strength, such as ABS resin. The connecting pipe 4 is a rubber component for connecting the mounting flange 3 and the waste disposer main body 5, and is fastened by a metal belt 7 and fixed to the mounting flange 3 and the waste disposer main body 5.

A treatment chamber cover 8 and a treatment chamber bracket 9 are disposed at the uppermost part of the garbage disposer main body 5, and constitute a treatment chamber 10. That is, the processing chamber 10 is a space surrounded by the processing chamber cover 8 and the processing chamber holder 9. In the processing chamber 10, stationary teeth 11 and rotary teeth 12 are arranged, and the rotary teeth 12 are rotated by a motor 13. The garbage (not shown) and water put into the water tank 2 enter the treatment chamber 10 through the mounting flange 3, are sandwiched and pulverized by the stationary teeth 11 and the rotary teeth 12, are mixed with water to form a slurry, and are discharged from the discharge pipe 14. The materials of the chamber cover 8 and the chamber holder 9 are not particularly limited, and are selected from materials having electrical insulation and appropriate mechanical strength, for example, ABS resin.

As described above, the motor 13 is a motor for rotationally driving the rotary teeth 12, and is fixed to the chamber bracket 9. The motor 13 is fixed by screwing a bolt 15 penetrating the motor 13 into a nut 16 cast into the chamber bracket 9. Since the material of the chamber bracket 9 has electrical insulation, no conduction occurs between the bolt 15 or the nut 16 and the chamber bracket 9. In fig. 1, only one set of the bolt 15 and the nut 16 is shown to avoid complication, but the garbage disposer 1 includes 3 or more sets of the bolt 15 and the nut 16. For stably holding the motor 13.

The motor 13 is configured by arranging a stator 20 and a rotor 21 inside a housing configured by the frame 17, the load-side bracket 18, and the non-load-side bracket 19. The frame 17 is a steel cylinder constituting a housing of the motor 13. The load-side bracket 18 and the non-load-side bracket 19 are members that support the rotor 21 and function as "covers" that close the upper and lower ends of the frame 17. The load-side bracket 18 and the non-load-side bracket 19 are made of insulating plastic. A rotary shaft 22 of the rotor 21 is rotatably supported by the load-side bracket 18 via a bearing 23 and by the non-load-side bracket 19 via a bearing 24. The materials of the load side carrier 18 and the non-load side carrier 19 are not particularly limited, but a material having electrical insulation and appropriate mechanical strength, for example, ABS resin, is selected as in the case of the process chamber carrier 9 and the like.

The rotary shaft 22 of the rotor 21 penetrates the load side bracket 18, protrudes outside the motor 13, further penetrates the process chamber bracket 9, protrudes inside the process chamber 10, and is coupled to the rotary teeth 12. 2 rotary shaft sealing members 25 are vertically overlapped with the rotary shaft 22 and the treatment chamber bracket 9 to seal water leakage from the treatment chamber 10. The flange member 26 is fitted and attached to the rotating shaft 22 between the chamber bracket 9 and the load-side bracket 18. The flange member 26 is a member having an annular planar shape and conforming to the flange of the knife, and has a size and a shape such as to cover the bearing 23 when viewed from above. Further, another flange member 27 is fitted to a lower portion of the rotary shaft 22. The flange member 27 is also a component having an annular planar shape and conforming to the flange of the knife, and has a size and a shape such as to cover the bearing 24 when viewed from above. The roles of the

flange members

26 and 27 will be described later.

A motor cover 28 is mounted on the outside of the motor 13. The motor cover 28 is a container fixed to the chamber bracket 9 and covering the entire motor 13. A water receiving dish 29 is attached to the lower surface of the motor cover 28. The function of the water containing vessel 29 will be described later.

Next, a detailed configuration of the motor 13 will be described with reference to fig. 2. The stator 20 of the motor 13 is an electromagnet disposed concentrically with the rotor 21 and surrounding the rotor 21. As shown in fig. 2, the stator 20 includes a stator core 30 and a coil 31. The rotor 21 is configured by radially disposing permanent magnets 33 in a rotor core 32. Therefore, power is supplied to the stator 20, but power is not supplied to the rotor 21. The rotor 21 is formed with a water drain hole 34 vertically penetrating the rotor 21.

A water control member 35 is disposed between the stator 20 and the rotor 21. The water control member 35 is constituted by a water control cylinder 36 and a splash prevention member 37. As shown in fig. 3, the water control cylinder 36 is a cylindrical member configured to: the diameter of the cylinder varies between the upper and lower portions, and is constant at the intermediate portion (the portion directly opposite to the stator core 30). The water control cylinder 36 has an upper end 36a bent outward and a lower end 36b bent inward.

As shown in fig. 4, the splash guard 37 includes a connection cylindrical portion 37a and a water control disc 37b, and the connection cylindrical portion 37a and the water control disc 37b are joined to each other at an upper end 37c of the connection cylindrical portion 37 a. The water control disk 37b has an inclination that descends downward toward the center portion, and an opening 37d is formed in the center portion. That is, the water control circular plate 37b has a conical inclined surface that descends from the upper end 37c toward the opening 37 d. Since the water control circular plate 37b has the conical inclined surface, the leakage water falling from the water discharge hole 39 onto the water control circular plate 37b flows to the conical inclined surface and is guided to the opening 37 d. In the present specification, the circumference on which the outline of the opening 37d is formed is referred to as the inner diameter of the water control disk 37b, and the circumference drawn by the outer circumference of the water control disk 37b, that is, the upper end 37c of the connecting cylindrical portion 37a is referred to as the outer diameter of the water control disk 37 b.

Returning to fig. 2, the configuration of the water control member 35 (water control cylinder 36, mist preventing member 37) will be described. As shown in fig. 2, the upper end 36a of the water control cylinder 36 is located higher than the upper end of the stator 20 (the upper end of the coil 31), and the lower end 36b is located lower than the lower end of the stator 20 (the lower end of the coil 31). Thus, the water control cylinder 36 covers the entire height direction of the stator 20 including the coil 31, and prevents the stator 20 from being wetted by water leakage. The upper end portion 36a has a shape that covers the stator 20 (coil 31) as the diameter of the water control cylinder 36 increases upward. The splash prevention member 37 is configured such that the outer surface of the connection cylindrical portion 37a is in surface contact with the inner surface of the water control cylinder 36, and is bonded and fixed to the water control cylinder 36. The splash prevention member 37 is attached to the water control cylinder 36 so that the upper end 37c thereof is lower than the upper end 36a of the water control cylinder 36. The diameter of the inner diameter portion of the water control circular plate 37b (the diameter of the opening 37d) is made smaller than the outer diameter of the bearing 23. The water control disk 37b is located above the rotor 21 and covers most of the rotor 21.

The material of the water control member 35 is not particularly limited, but a material having electrical insulation, easy thin-wall molding, and appropriate mechanical strength, for example, ABS resin, is selected. In the present embodiment, the water control member 35 (the water control cylinder 36 and the splash preventing member 37) is made of ABS resin having a thickness of 0.4mm or more. In addition, the thickness of the water control member 35 is based on: "provincial explanation on technical criteria for determining electric appliances" of province of economic industry "attached table 8(http:// www.meti.go.jp/polarity/consormer/serial/dian/dean/kaishu/gijutsukijunkaishu/beppyoudai 8.pdf) page 34, 1 common item, (7) double insulation structure, イ (ロ) (c)" thickness of insulation for a portion which is not likely to be subjected to a trauma is 0.4mm or more. ".

The description is continued on the parts constituting the motor 13. As shown in fig. 2, the load side bracket 18 is formed with a recess 38. The recess 38 is provided with a drain hole 39 vertically penetrating the load side bracket 18. The concave portion 38 is formed in an annular shape centered on the rotation center of the rotor 21 when the load side bracket 18 is viewed in a plan view, that is, when the garbage disposer 1 is viewed from above the water tub 2.

An annular bank portion 40 is formed on the upper surface of the non-load-side bracket 19. The annular bank 40 is formed so as to surround the outside of the rotary shaft 22, and has an annular shape centered on the rotation center of the rotor 21 in plan view. The lower end 36b of the water control cylinder 36 is located inside the ring-shaped bank 40 (a portion close to the rotary shaft 22) and is located lower than the upper end of the ring-shaped bank 40. The stator 20 is disposed outside the annular bank 40. A drain hole 41 penetrating the non-load-side bracket 19 vertically is formed in a portion of the non-load-side bracket 19 located inside the annular bank 40.

Finally, the operation of the garbage disposer 1 will be described. As described above, since the rotating shaft seal 25 is fitted to the portion of the processing chamber bracket 9 through which the rotating shaft 22 of the rotating shaft 22 penetrates, water in the processing chamber 10 does not leak and falls below the processing chamber bracket 9 in a normal state. Even if the water in the treatment chamber 10 leaks due to deterioration or breakage of the rotary shaft seal 25 and drops below the treatment chamber bracket 9 and flows into the motor 13, the water can be discharged to the outside of the motor 13 through the following path.

If a defect occurs in the rotary shaft seal 25, the water in the treatment chamber 10 flows along the rotary shaft 22 of the motor 13 to the lower side of the treatment chamber bracket 9, but since the flange member 26 is fitted to the rotary shaft 22, the water flowing along the rotary shaft 22 (hereinafter referred to as "leakage") separates from the rotary shaft 22, falls from the outer edge end of the flange member 26, and flows into the recess 38. Therefore, the leakage water does not flow into the bearing 23, and the grease in the bearing 23 is washed away. As a result, the burning of the bearing 23 due to the grease loss can be prevented.

The leakage water that has fallen into the recess 38 flows into the interior of (the housing of) the motor 13 through the drainage hole 39. Therefore, the leakage water does not accumulate in the recess 38. There is no case where leakage water that has accumulated in the recess 38 and overflows from the recess 38 flows into the bearing 23 and washes away grease in the bearing 23. As a result, the burning of the bearing 23 due to the grease loss can be prevented.

The water that has flowed into (the housing of) the motor 13 through the water drain hole 39 drops to the upper surface of the rotor core 32, and flows through the water drain hole 34 and drops to the lower side of the rotor core 32. Since the flange member 27 fitted to the rotary shaft 22 covers the bearing 24 below the rotor core 32, the grease in the bearing 24 is washed away without allowing the leakage water flowing from the drainage hole 34 to flow into the bearing 24. As a result, the burning of the bearing 24 due to the grease loss can be prevented.

The leakage water flowing down from the drainage hole 34 falls down to a portion surrounded by the ring-shaped bank 40 on the upper surface of the non-load-side bracket 19. The leakage water that has fallen to this location is discharged through the drain hole 41 to the lower side of the non-load-side bracket 19, that is, to the outside of (the housing of) the motor 13. The leakage water discharged to the outside of (the housing of) the motor 13 is temporarily stored in the water containing tray 29.

At this time, water leakage from the treatment chamber 10 occurs during operation of the garbage disposer 1. During operation of the waste disposer 1, the rotor 21 rotates. Therefore, the water leakage that has passed through the water drain hole 39 and dropped onto the upper surface of the rotor core 32 is repelled by the centrifugal force, and droplets are generated. This mist repeatedly collides between the upper surface of the rotor core 32 and the lower surface of the mist avoiding member 37, finally flows downward along the inner surface of the water control cylinder 36, and flows into a portion surrounded by the annular bank portion 40 on the upper surface of the opposite-to-load side bracket 19. Therefore, even if the water leakage that has passed through the water discharge hole 39 and dropped to the upper surface of the rotor core 32 is repelled by the centrifugal force to generate droplets, the droplets are scattered over the upper end of the water control cylinder 36, and the stator 20 is not wetted. The leakage water flowing down from the water drain hole 34 flows to the upper surface of the water control circular plate 37b of the splash prevention member 37, passes through the opening 37d, and falls onto the upper surface of the rotor core 32. Therefore, the leakage water falls to a position closer to the rotation center of the rotor core 32 than in the case where the splash prevention member 37 (water control disk 37b) is not provided. Since the centrifugal force applied to the leakage water is smaller at a position closer to the rotation center of the rotor core 32 than at a position farther from the rotation center, the generation of droplets can be suppressed.

As described above, since the motor 13 of the present embodiment includes the water control cylinder 36 between the stator 20 and the rotor 21, the leakage water entering from the upper surface of the motor 13 flows to the lower portion of the motor 13 through the inside of the water control cylinder 36, and is discharged to the lower portion of the motor 13. Therefore, the stator 20 is not wetted by the water leakage entering from the upper surface of the motor 13. Even if the leakage water entering from the upper surface of the motor 13 is repelled by the rotating rotor core 32 to generate the mist, the mist-preventing member 37 can prevent the mist from scattering, and the mist does not wet the stator 20. Thus, even if water leaks from the upper surface of the motor 13, the water does not flow directly to the stator 20, and the droplets generated by the water leakage being repelled by the rotor core 32 are not scattered toward the stator 20. Therefore, even if water leaks from the motor 13, the motor is less likely to malfunction. The waste disposer 1 is less likely to fail even if the rotary shaft seal 25 is broken.

The above embodiments are merely examples of specific embodiments of the present invention, and do not limit the technical scope of the present invention. The present invention can be implemented by freely changing, applying, or improving the technical idea described in the scope of the claims.

In the above embodiment, the example in which the water control member 35 is configured by attaching the splash avoiding member 37 to the water control cylinder 36 has been described, but the water control cylinder 36 is not limited to a combination of 2 kinds of members. The water control member 35 may be composed of 1 member. For example, the water control cylinder 36 may have a water control circular plate 37b integrally formed therein. In the case where the water control member 35 is constituted by 2 members, the splash avoiding member 37 is not limited to the member having the connection cylindrical portion 37a and the water control circular plate 37b as exemplified in the above embodiment. The splash prevention member 37 may be provided with only the water control disk 37 b. That is, the water control disk 37b may be bonded and fixed to the water control cylinder 36 to constitute the water control member 35.

The specific shape of the water control member 35 (the water control cylinder 36 and the entrainment preventing member 37) shown in the above embodiment is an example, and the shape of the water control member 35 is not limited to the above embodiment. The shape of the water control member 35 may be designed arbitrarily. In particular, the change in the diameter of the water control cylinder 36 and the bending of the upper end portion 36a and the lower end portion 36b are arbitrary components.

The material of the water control member 35 (the water control cylinder 36 and the splash preventing member 37) shown in the above embodiments is an example, and the material of the water control member 35 is not limited to the above embodiments. The raw material of the water control member 35 can be arbitrarily selected.

The motor of the present invention is sufficient as long as it is provided with a stator to which electric power is supplied and a rotor to which electric power is not supplied, and is not limited by the operation principle. The motor of the present invention may be a permanent magnet synchronous motor, an induction motor (both of a cage type and a coil type), or a so-called brushless motor. The motor of the present invention is not limited to the ac motor. A direct current motor (a DC brushless motor having a rotor provided with a permanent magnet) may be used.

The configuration and shape of the garbage disposer 1 shown in the above embodiments are examples. The garbage disposer of the present invention is not limited to the above embodiment. The garbage disposer can be designed arbitrarily according to purposes and purposes.

In the above embodiment, the example in which the garbage disposer 1 is provided with the water containing tray 29 is illustrated, but in the present invention, the water containing tray 29 is an arbitrary constituent element. The waste disposer 1 may not have a water containing pan 29. For example, the leakage water discharged from the drainage hole 41 may be directly dropped to the floor surface of the installation place of the garbage disposer 1. Alternatively, a hose may be provided for guiding the leakage water discharged from the drainage hole 41 to a drainage pipe not shown. Further, the water receiving vessel 29 may be provided with a sensor for detecting water leakage, and the sensor may alarm to the outside when water leakage is detected.

The present application is based on Japanese patent application No. 2016-135173, including the specification, claims, drawings, and abstract of the specification, filed on 2016, 7/7, and its priority is claimed. The disclosure of this basic patent application is incorporated by reference in its entirety into the present application.

Industrial applicability

The present invention is useful as a motor and a garbage disposer including the motor.

Description of the reference numerals

1 garbage disposal machine

2 Water tank

3 mounting flange

4 connecting pipe

5 garbage disposer main body

6 nut

7 belt

8 Process Chamber hood

9 Process Chamber support

10 processing chamber

11 fixed teeth

12 rotating tooth

13 electric motor

14 discharge pipe

15 bolt

16 nut

17 frame

18 load side bracket

19 opposite load side bracket

20 stator

21 rotor

22 rotating shaft

23 bearing

24 bearing

25 rotating shaft seal

26 Flange part

27 Flange member

28 Motor cover

29 water container

30 stator core

31 coil

32 rotor core

33 permanent magnet

34 drainage hole

35 Water control Components

36 water control cylinder

36a upper end portion

36b lower end portion

37 droplet-preventing member

37a connection cylindrical portion

37b water control round plate

37c upper end

37d opening

38 recess

39 drainage hole

40 ring-shaped embankment part

41 drainage hole

Claims

1. An electric motor in which an output shaft is vertically and vertically disposed and the output shaft is mounted so as to protrude upward, the electric motor comprising:

a housing;

a stator fixed to an inside of the housing;

a rotor disposed inside the stator inside the housing and rotating about a vertical axis; and

a water control member disposed between the stator and the rotor and preventing water leakage into the casing from wetting the stator,

the water control member includes:

a water control cylinder which is disposed between the stator and the rotor inside the housing, has a rotation center of the rotor as a central axis, and nonwatertight partitions a space of the housing in which the stator is disposed and a space of the housing in which the rotor is disposed; and

a water control circular plate inside the housing, covering the upper side of the rotor, having an opening at a center portion through which a rotation shaft of the rotor passes, and having an outer diameter portion watertight connected to an inner surface of the water control cylinder.

2. The motor according to claim 1, wherein,

the opening of the water control circular plate has a diameter smaller than an outer diameter of a bearing which is attached to an upper portion of the housing and supports a rotating shaft of the rotor.

3. The motor according to claim 1, wherein,

the water control disk has a conical inclined surface that descends from the outer diameter portion toward the opening.

4. The motor according to any one of claims 1 to 3,

the upper end of the water control cylinder is located at a higher position than the upper end of the stator.

5. The motor according to any one of claims 1 to 3,

the lower end of the water control cylinder is located at a lower position than the lower end of the stator.

6. The motor according to any one of claims 1 to 3,

the water control member is composed of an insulating material.

7. A garbage disposer comprising the motor according to any one of claims 1 to 3 and driven by the motor.