JP3222734U - Motor airtight device - Google Patents

Abstract

A motor hermetic device is provided. A motor hermetic device 100 includes a housing 1, a hermetic housing 2, and a sleeve 3. The housing includes an outer surface 11 and an inner surface 12, and the hermetic housing is provided on the outer surface. An airtight blocking space S is formed on the outer side surface, a sleeve is provided on the inner side surface, and the airtight blocking space communicates with the airframe. By providing the motor inside the hermetic housing, the motor is positioned in the hermetic shut-off space. When the hermetic housing and the housing are hermetically sealed, the power output shaft 41 of the motor serves as a shaft seal for preventing outside air from entering the airframe. There is no need to rely on it. As a result, there is no friction between the power output shaft and the housing, no dust is generated, and there is no shaft seal wear. [Selection] Figure 1

Description

The present invention relates to a hermetic device, and more particularly to a motor hermetic device.

Thermal energy is generated during the operation of the motor. In order to eliminate the heat energy of the motor, the motor is generally provided outside the machine tool body to cool the motor. However, in a state where the machine tool body requires airtightness, it is to prevent gas from flowing into the machine tool along with the power output shaft of the motor, and a power output shaft using a shaft seal as a conventional means. As a result, the intrusion of gas could be prevented as much as possible. However, there is a limit to the airtight effect of the shaft seal, and the power output shaft is worn with the shaft seal during rotation and vibration, so it is not only necessary to replace the shaft seal regularly, but also dust generated by wear of the shaft seal. Was also disadvantageous to the machine tool.

As a result of intensive studies in view of the above-described defects of the prior art, the present inventor has found the following matters and completed the motor hermetic device of the present invention.

In order to achieve the above object and other objects, the present invention is to provide a motor hermetic device, wherein the motor hermetic device is provided on a housing having an outer surface and an inner surface, and provided on the outer surface. An airtight housing that forms an airtight cut-off space on the outer side surface, and a sleeve that is provided on the inner side surface and communicates with the airtight cut-off space and the fuselage.

The adjustable motor hermetic device further includes a motor provided in the hermetic shut-off space, wherein the motor includes a power output shaft, and the power output shaft passes through the sleeve from the housing to the body. Is inserted.

In the adjustable motor hermetic device, a cooling hole is formed in the hermetic housing.

The adjustable motor hermetic device further includes water cooling means provided in the hermetic housing.

The adjustable motor hermetic device further includes temperature monitoring means provided in the hermetic housing.

The adjustable motor hermetic apparatus further includes airtight means provided between the hermetic housing and the housing.

The adjustable motor hermetic device further includes a hermetic means provided between the sleeve and the housing.

The adjustable motor hermetic device further includes support means provided between the housing and the airframe.

Therefore, the motor hermetic device of the present invention does not need to use a shaft seal as compared with the prior art, reduces the cost of parts replacement and wear, and does not generate dust.

It is a schematic diagram which shows the motor airtight apparatus which concerns on Example 1 of this invention. It is a schematic diagram which shows the motor airtight apparatus which concerns on Example 2 of this invention.

Hereinafter, in order to fully understand the objects, features, and effects of the present invention, the present invention will be described in detail in combination with the following embodiments based on the accompanying drawings.

As shown in FIG. 1, the motor hermetic device 100 according to the first embodiment of the present invention includes a housing 1, an airtight housing 2, and a sleeve 3.

The housing 1 is used for mounting the motor 4, and the housing 1 includes an outer surface 11 and an inner surface 12.

The hermetic housing 2 is installed on the outer surface 11 to form an airtight blocking space S on the outer surface 11. The airtight housing 2 may be a stainless steel housing, but the present invention is not limited to this.

The sleeve 3 is provided on the inner side surface 12, and communicates the airtight blocking space S and the body 5.

Through the structure of the motor hermetic device 100 of the present invention, the motor 4 is provided in the hermetic housing 2 by being provided in the hermetic housing 2, and the power output shaft of the motor 4 is in the hermetic housing 2 and the housing 1 in the hermetic state. 41 does not need to rely on a shaft seal to prevent outside air from entering the body 5. Thereby, there is no friction between the power output shaft 41 and the housing 1, no dust is generated, and there is no wear of the shaft seal.

Furthermore, in one embodiment, as shown in FIG. 1, the motor hermetic device 100 further includes the motor 4 provided in the hermetic blocking space S. The motor 4 includes a power output shaft 41, and the power output shaft 41 is inserted from the housing 1 into the body 5 via the sleeve 3. Through this, power can be output to the airframe 5 in an overall airtight state.

Further, in one embodiment, as shown in FIG. 1, a cooling hole 21 is opened in the hermetic housing 2. The cooling hole 21 is used to communicate with a nitrogen source (not shown), and the nitrogen source introduces nitrogen into the airtight shut-off space S to cool the motor 4. By entering 5, the operating environment of the aircraft 5 is filled with nitrogen. A gap between the nitrogen pipe line and the cooling hole 21 is sealed around the cooling hole 21 by an airtight means such as airtight silicon.

Further, in one embodiment, as shown in FIG. 1, the motor hermetic device 100 further includes temperature monitoring means 6 provided in the hermetic housing 2. The temperature monitoring means 6 is used for detecting the temperature of the motor 4. The temperature monitoring unit 6 can be a wireless or wired type device. When the temperature monitoring unit 6 is a wired type, the temperature monitoring unit 6 is wired to the outside of the hermetic housing 2 in the same manner by an opening and a hermetic seal method.

Further, in one embodiment, as shown in FIG. 1, the motor airtight device 100 further includes airtight means 71 and 72. The airtight means 71 is provided between the airtight housing 2 and the housing 1, and the airtight means 72 is provided between the sleeve 3 and the housing 1. The airtight means 71 and 72 are, for example, silicon airtight means, but the present invention is not limited to this. Through this, the space inside the airtight housing 2, the sleeve 3, and the machine body 5 is airtight and blocked from the outside.

Further, in one embodiment, as shown in FIG. 1, the motor hermetic device 100 further includes support means 8 provided between the housing 1 and the fuselage 5, and the housing 1 and the motor 4 outside thereof. Used to support the hermetic housing 2.

Furthermore, as shown in FIG. 2, the present invention provides a second embodiment. The difference between the motor hermetic device 100a of the second embodiment and the motor hermetic device 100 of the first embodiment is that the motor hermetic device 100a does not include the air-cooling cooling holes 21, but includes the water cooling means 9 provided in the hermetic housing 2. . The water cooling means 9 is, for example, a cooling coil, and exchanges heat with the motor 4 through a high surface area.

Although the present invention has been described in various ways with preferred embodiments, these are merely to clarify the technical contents of the present invention, and the scope of the present invention is not limited to such embodiments. It will be apparent to those skilled in the art. It should be noted that changes and substitutions within the range equivalent to the above embodiment are equally covered within the scope of the present invention. Therefore, the protection scope of the present invention is based on the scope defined by the utility model registration claim.

DESCRIPTION OF SYMBOLS 100 Motor airtight apparatus 100a Motor airtight apparatus 1 Case 11 Outer side surface 12 Inner side surface 2 Airtight housing 21 Cooling hole 3 Sleeve 4 Motor 41 Power output shaft 5 Airframe 6 Temperature monitoring means 71 Airtight means 72 Airtight means 8 Support means 9 Water cooling means S Airtight blocking space

Claims (8)

A housing including an outer surface and an inner surface; and an airtight housing that forms an airtight blocking space on the outer surface by being provided on the outer surface;
A sleeve provided on the inner surface and communicating with the airtight blocking space and the fuselage;
A motor hermetic device, comprising:   The motor further includes a motor provided in the hermetic shut-off space, wherein the motor includes a power output shaft, and the power output shaft is inserted from the housing to the body via the sleeve. The motor hermetic device according to claim 1.   The motor hermetic device according to claim 1, wherein a cooling hole is formed in the hermetic housing.   The motor hermetic device according to claim 1, further comprising water cooling means provided in the hermetic housing.   The motor hermetic device according to claim 1, further comprising temperature monitoring means provided in the hermetic housing.   The motor hermetic device according to claim 1, further comprising airtight means provided between the airtight housing and the housing.   The motor hermetic device according to claim 1, further comprising airtight means provided between the sleeve and the housing. The motor hermetic device according to claim 1, further comprising support means provided between the casing and the airframe.

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