JPH0956122A - Cleaner for electric rotating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean off abrasive powder or the like efficiently even for an electric rotating machine installed at site by without previously mounting an intricate cleaner on individual electric rotating machine. SOLUTION: The cleaner for an electric rotating machine comprises a vacuum cleaning section 22 containing a filter 23 where a blow-out section 22b and an intake section 22a are coupled with an electric rotating machine 31 in order to circulate air current through the interior thereof and the filter 23, and a compressor section 24 coupled with the electric rotating machine 31 and blowing the air to the interior thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine cleaning device for collecting brush abrasion powder and the like accumulated inside a locally installed rotating electric machine such as a DC motor generator.

[0002]

2. Description of the Related Art Generally, a rotary electric machine accumulates dust inside when it is used for a long time. Especially in the DC rotating electric machine,
Abrasion powder of the commutator pieces and the brush for rectification is accumulated. Such abrasion powder adheres due to moisture or the like to cause insulation deterioration, and when conditions such as varnish cracking of the wiring portion are overlapped, a short circuit state occurs, causing troubles in the entire system. In order to prevent this, a cleaning method for absorbing abrasion powder with a vacuum cleaner was used locally.

FIG. 5 is a sectional view of a conventional DC servomotor disclosed in, for example, Japanese Patent Laid-Open No. 6-153461.
In the figure, 1 is a rotor having commutators 2 and 3, 4 is a fan provided at the shaft end of the rotor 1, and 5 is a commutator 2
Is a current supply brush that supplies a current for applying a rotational force to the rotor 1 in contact with, and a speed detection brush 6 that contacts the commutator 3 and detects the rotation speed of the rotor 1.

Reference numeral 7 is a stator surrounding the rotor 1, 8 is a plurality of suction pipes fixed to the stator 7 so that their tips are opposed to the commutators 2 and 3, respectively, and 9 is a fan 4. Surrounding the housing, 10 and 11 are three-way valve attached to the housing 9, 12 is a suction pipe 8 and a valve 1.
It is a filter connected to 0 and 11.

In such a DC servomotor, the abrasion powder generated in the commutators 2 and 3 is sucked from the suction pipe 8 by the rotation of the fan 4 and accumulated in the filter 12. This prevents the accumulation of wear powder inside the motor.

Further, FIG. 6 shows, for example, in Japanese Utility Model Publication 57-5896.
FIG. 7 is a sectional view of a conventional fully-closed DC motor shown in Japanese Patent Publication No. In the figure, 13 is an electric motor main body having a rotor 14, a stator 15 and a brush 16, 17 is a blower provided on the electric motor main body 13, and 18 is provided on the electric motor main body 13 facing the blower 17. It is a dust reservoir, and a filter 18a is detachably provided in the dust reservoir 18. Reference numeral 19 is a rectangular tube-shaped air guide provided between the blower 17 and the dust reservoir 18.

In such an electric motor, air is circulated between the inside of the electric motor main body 13 and the air guide 19 by the blower 17, and the abrasion powder of the brush 16 is collected by the dust reservoir 18 in the filter 18a.

[0008]

In the conventional cleaning device for a rotary electric machine configured as described above, the structure is built in the rotary electric machine in advance, and the structure is complicated. However, there is a problem that there is no device for efficiently removing abrasion powder and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a rotating electric machine cleaning device capable of efficiently removing abrasion powder and the like even in a locally installed rotating electric machine. Aim to get.

[0010]

According to a first aspect of the present invention, there is provided a cleaning device for a rotary electric machine, which has a filter inside, and a blow-out portion and a suction portion are connected to the rotary electric machine and pass through the inside of the rotary electric machine and the filter. A vacuum cleaning unit that generates a circulating air flow and a compressor unit that is connected to the rotating electric machine and blows gas into the inside of the rotating electric machine are provided.

According to a second aspect of the present invention, there is provided a cleaning device for a rotary electric machine in which the vacuum cleaning section and the compressor section are mounted on the same carriage to form a unit.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1. 1 is a front view showing a cleaning device for a rotary electric machine according to Embodiment 1 of the present invention, and FIG. 2 is a plan view of FIG.

In the figure, reference numeral 21 is a carriage, and 22 is a vacuum cleaning section mounted on the carriage 1.
A suction unit 22a that sucks in air and a blowing unit 22b that blows out the sucked air are provided in the. Further, inside the vacuum cleaner 22, a dust reservoir 22c surrounded by a filter 23 is provided. Reference numeral 24 is a compressor section mounted on the truck 1. The compressor section 24 is provided with a blowout section 24a for blowing out compressed air. Further, 25 is an operation unit, 26 is a power cord, 2
Reference numerals 7, 28, and 29 denote hoses housed on the trolley 21, respectively.

Next, FIG. 3 is a configuration diagram showing a usage state of the cleaning device of FIG. In the figure, 31 is a rotary electric machine, and has a main generator part 32, an electric motor part 33, and an exciter part 34. The main generator section 32 and the exciter section 34 are provided with commutator brush inspection ports 32a and 34a, respectively.

With the cleaning device as described above, the rotating electric machine 31
When cleaning the inside, the carriage 21 is moved to the vicinity of the stationary rotating electric machine 31, and the power cord 26 is pulled out and connected to the power source. Then, the suction hose 27 is connected to the suction portion 22a of the vacuum cleaning portion 22, and the tip end portion thereof is inserted into the rotary electric machine 31 through the commutator brush inspection port 32a. Further, a blow-out hose 28 is connected to the blow-out part 22b of the vacuum cleaning part 22 and a compressor hose 29 is connected to the blow-out part 24a of the compressor part 24, and the respective tip ends are inserted into the rotary electric machine 31 from the commutator brush inspection port 34a. To do. After that, the periphery of each commutator brush inspection port 32a, 34a is covered with a shield 35, 36 such as a vinyl sheet. Also, if there are other minute openings, they are shielded with an adhesive tape or the like.

After setting in such a state, the operating portion 2
5 to operate the vacuum cleaner 22 and the compressor 24.
Start driving. As a result, the air blown out from the blowout portion 22b of the vacuum cleaning portion 22 is blown out by the blowout hose 28, the exciter portion 34, the motor portion 33, the main generator portion 32, the suction hose 27, the suction portion 22a, the dust collecting portion 22c, Blowing part 22b
Cycle in order.

On the other hand, by driving the compressor section 24,
Compressed air blows out from the tip of the compressor hose 29, and dust such as abrasion powder accumulated in the exciter unit 34 rises. The dust soared rides on the circulating air flow, is guided to the vacuum cleaner 22, and is accumulated in the dust reservoir 22c by the filter 23. At this time, the shields 35 and 36 prevent dust from leaking to the outside.

Next, the tip of the compressor hose 29 is inserted into the commutator brush inspection port 32a of the main generator section 32,
Perform the same operation as above. As a result, the main generator unit 32
Dust such as abrasion powder that has accumulated inside rises and is accumulated in the dust reservoir 22c along with the circulating air flow.

According to such a cleaning device, it is possible to efficiently clean the rotary electric machine 31 installed on-site, such as abrasion powder, without preliminarily mounting a cleaning device having a complicated structure on each rotary electric machine 31. . In addition, it is possible to perform the work in a hygienic manner without scattering dust or heavy metals harmful to the human body around.

Further, since the vacuum cleaning section 22 and the compressor section 24 are mounted on the dolly 21 to form a unit, it is easy to move and work.

Embodiment 2 FIG. In the first embodiment, the vacuum cleaning unit 22 and the compressor unit 24 are unitized. However, as shown in FIG. 4, for example, a vacuum cleaner 41 having an output of about 1 kW is used as the vacuum cleaning unit. Compact compressor 4 with a capacity of about 10kW
2 may be used. In this case, two or more vacuum cleaners 41 may be used to generate parallel circulating airflows.

[Brief description of drawings]

FIG. 1 is a front view showing a cleaning device for a rotary electric machine according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a configuration diagram showing a usage state of the cleaning device of FIG. 1.

FIG. 4 is a configuration diagram showing a usage state of the cleaning device for a rotary electric machine according to Embodiment 1 of the present invention.

FIG. 5 is a sectional view of an example of a conventional DC servo motor.

FIG. 6 is a cross-sectional view of an example of a conventional fully closed DC motor.

[Explanation of symbols]

21 trolley, 22 vacuum cleaning part, 22a suction part, 22
b blow-off part, 23 filter, 24 compressor part,
31 rotating electric machine, 41 vacuum cleaner, 42 compressor.

Claims (2)

[Claims] 1. A vacuum cleaning unit having a filter inside, a blower unit and a suction unit being connected to a rotating electric machine, and a vacuum cleaning unit generating a circulating air flow passing through the inside of the rotating electric machine and the filter, and being connected to the rotating electric machine. A cleaning device for a rotating electric machine, comprising: a compressor unit for blowing gas into the inside of the rotating electric machine. 2. The cleaning device for a rotary electric machine according to claim 1, wherein the vacuum cleaning section and the compressor section are mounted on the same carriage as a unit.