KR20210085934A - Compressor and turbo chiller having the same - Google Patents

Abstract

The present invention relates to a compressor having a thrust reduction function, and a refrigerator having the same. According to the present invention, the compressor has a compressor body in which a rotating part installation space and a driving part installation space are formed. An airtight part is disposed to surround a drive shaft of a driving part, but disposed on both sides of a seal housing part, which is disposed between a rotating part and the driving part, at different positions on both sides of the seal housing part.

Description

A compressor having a thrust reduction function, and a turbo chiller having the same

The present invention relates to a compressor having a thrust reduction function and a turbo chiller having the same.

In general, an air conditioner is a device that cools or heats an indoor space.

A conventional air conditioner includes a compressor for compressing a refrigerant, a condenser in which the refrigerant discharged from the compressor is condensed, an expander in which the refrigerant passing through the condenser expands, and an evaporator in which the refrigerant expanded in the expander is evaporated.

The turbo refrigerator includes a compressor that sucks in a low-pressure refrigerant and compresses it into a high-pressure refrigerant, a condenser, an expansion valve, and an evaporator, so that a refrigeration cycle can be driven.

The turbo refrigerator is provided with a centrifugal turbo compressor.

The turbocompressor converts kinetic energy generated from the driving motor into static pressure while discharging gas in a high-pressure state, and one or more impellers that rotate by the driving force of the driving motor to compress the refrigerant and the impeller are accommodated It may include a housing and the like.

1 is a cross-sectional view showing a conventional compressor.

Referring to FIG. 1 , the conventional centrifugal compressor 10 has a first-stage impeller 14 and a second-stage impeller 16 that are sequentially coupled to a rotating shaft 12 connected to a driving source.

A seal part 28 is disposed in the back plate space 22a of the two-stage impeller 16 to be coupled to the rotation shaft 12 .

The seal part 28 appropriately lowers the pressure of the high-pressure source (arrow) flowing into the back plate space 22a of the two-stage impeller 16 .

In the interior of the two-stage centrifugal compressor 10, an oil tank space portion T is provided from the rear plate of the two-stage impeller 16 to store oil (lubricating oil) supplied to rotating machinery such as gearboxes and bearings. are provided at positions spaced apart from each other in the direction.

Here, the conventional compressor has a first space in which the driving unit is disposed and a second space in which the impellers 14 and 16 are disposed. The first space and the second space are partitioned by the seal part.

The rotating shaft 12 passes through the seal part 28 .

A seal 40 is installed between the seal part 28 and the impeller 14 . The seal 40 is disposed to surround the rotation shaft 12 .

The conventional seal 40 is provided as a single piece. A single seal 40 is disposed on one side of the seal part 28 . The seal 40 is not constrained to one side of the seal part 28 .

In addition, a separate seal is not installed on the other side of the seal part 28, that is, on the second space side.

Meanwhile, the impeller 16 is rotated at a constant rotation speed by the rotation of the rotation shaft 12 . Through this, the impeller 14 compresses the refrigerant to a predetermined pressure.

In this process, the pressure of the second space, which is the space in which the impeller 14 is rotated, is increased to a constant pressure. On the other hand, the pressure may not be increased in the first space in which the driving unit for rotating the rotating shaft 12 is disposed.

Accordingly, a predetermined pressure difference is generated between the first and second spaces described above. Thrust is generated along the side of the first space in the second space due to the pressure difference.

As described above, when the thrust is increased to more than a certain level due to the pressure difference, the bearing installed on the rotating shaft 12 and the rotating impeller are damaged.

In addition, when the impeller is damaged or the installation position is misaligned due to the increase in thrust, the compression efficiency of the refrigerant compressed through the rotation of the impeller is reduced. This causes a problem of lowering the refrigeration capacity of the refrigerator itself.

An object of the present invention is to reduce the pressure difference between the rotating part installation space and the driving part installation space to a certain level or less by installing an airtight part on the outer periphery of the drive shaft at the boundary between the rotating part installation space and the driving part installation space to reduce the thrust generated when the rotating part is rotated. It is to provide a compressor having a thrust reduction function capable of efficiently reducing the thrust, and a turbo chiller having the same.

Another object of the present invention is to provide a compressor having a thrust reduction function capable of preventing the refrigerant from leaking to a rotating part driving unit when the refrigerant is compressed, and a turbo refrigerator having the same.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. Moreover, it will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The compressor according to the present invention has a compressor body in which a rotating part installation space and a driving part installation space are formed, and arranged to surround the outer periphery of the driving shaft of the driving part, but airtight on both sides of the seal housing part disposed between the rotating part and the driving part The portion is disposed on both sides of the seal housing portion.

The present invention also provides a turbo chiller having the above compressor.

By means of the above solution, the present invention reduces the pressure difference between the rotating part installation space and the driving part installation space to a certain level or less by installing an airtight part on the outer periphery of the drive shaft at the boundary between the rotating part installation space and the driving part installation space. The generated thrust can be effectively reduced.

In addition, the present invention can prevent the refrigerant from leaking toward the rotating part driving unit when the refrigerant is compressed.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a cross-sectional view showing a conventional compressor.
2 is a perspective view showing a refrigerator according to the present invention.
3 is a perspective view showing a compressor according to the present invention.
4 is a cross-sectional view showing a cross-section of a compressor according to the present invention.
Figure 5a is a cross-sectional view showing the arrangement state of the airtight part according to the present invention.
5B is an enlarged cross-sectional view showing “B” of FIG. 5A .
6 is a cross-sectional view showing the pressure action in the first and second installation spaces according to the installation of the airtight part according to the present invention.
7 is a graph showing the change in thrust according to the position of the first seal member according to the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to refer to the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Also, when it is described that a component is "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components are "interposed" between each component. It is to be understood that “or, each component may be “connected,” “coupled,” or “connected” through another component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Hereinafter, a compressor having a thrust reduction function and a turbo chiller having the same according to some embodiments of the present invention will be described.

Here, the compressor according to the present invention is included in the refrigerator. The description of the compressor will be included in the description of the refrigerator.

2 is a perspective view showing a refrigerator according to the present invention.

Referring to FIG. 2 , the refrigerator of the present invention includes a compressor 1 , a condenser 2 , an expander 3 , an economizer 4 , and an evaporator 5 . The refrigerator of the present invention achieves multi-stage compression.

The compressor 1 is composed of first and second compressors 1a and 1b. The first and second compressors 1a and 1b are respectively connected through a pipe 1a.

The rear end of the second compressor (1b) is connected to the condenser (2). The front end of the first compressor (1a) is connected to the evaporator (5). The condenser (2) is connected to the economizer (4). The economizer 4 is connected to a pipe connecting the first and second compressors 1a and 1b. Also, the economizer 4 is connected to the evaporator 5 . The economizer 4 separates a gaseous refrigerant and a liquid refrigerant from the condensed refrigerant. The gaseous refrigerant is supplied to a pipe connecting the first and second compressors 1a and 1b. The liquid refrigerant is supplied to the evaporator (5).

Since the condenser 2, the economizer 4, and the evaporator 2 may be the same as described above, descriptions thereof will be omitted.

Accordingly, the first and second compressors 1a and 1b according to the present invention are connected in series. The configuration of the first and second compressors 1a and 1b is the same. Hereinafter, the first and second compressors 1a and 1b will be described as the compressor 1 with a unified name.

3 is a perspective view showing a compressor according to the present invention.

Referring to FIG. 3 , the compressor 1 according to the present invention has a compressor body 100 . A refrigerant inlet 101 is formed at the front end of the compressor body 100 . A refrigerant outlet 102 is formed in the central portion of the compressor body 100 . The evaporated refrigerant flows into the compressor 100 through the refrigerant inlet 101 . The refrigerant compressed to a predetermined pressure by the compressor 100 is supplied to the condenser 2 through the refrigerant outlet 102 .

The compressor 100 according to the present invention achieves multi-stage compression. Accordingly, the compressor 100 has three rotating parts 400 .

4 is a cross-sectional view showing a cross-section of a compressor according to the present invention.

Referring to FIGS. 3 and 4 , the compressor 1 according to the present invention has the above-described compressor body 100 . A first installation space a1 and a second installation space a2 are formed inside the compressor body 100 .

The driving unit 200 is disposed in the first installation space a1. The support part 300 and the rotating part 400 are disposed in the second installation space a1 .

The compressor 1 has the driving unit 200 . The driving unit 200 includes a driving motor 210 and a driving shaft 220 . The driving motor 210 is disposed at the rear end of the compressor body 100 . The driving shaft 220 is axially connected to the driving motor 210 . The drive shaft 220 is extended to be disposed in the second installation space (a2).

The support part 300 includes a first support part 301 , a second support part 302 , and a third support part 303 . The first, second, and third support parts 301 , 302 , and 303 are sequentially disposed along the driving shaft 220 .

The driving shaft 220 passes through the center of the first, second, and third support parts 301 , 302 , 303 . The first, second, and third support parts 301 , 302 , and 303 may have a structure having the same function as each other.

And the rotating part 400 is an impeller. The rotating part 400 is configured in three stages. The rotating unit 400 may include first, second, and third rotating units 401 , 402 and 403 , and the first, second, and third rotating units 401 , 402 and 403 may have the same configuration.

Each of the first, second, and third rotation parts 401 , 402 , 403 is rotatably supported by the first, second, and third support parts 301 , 302 , 303 . The centers of the first, second, and third rotation units 401 , 402 , 403 are connected to the driving shaft 220 .

Figure 5a is a cross-sectional view showing the arrangement state of the airtight part according to the present invention, Figure 5b is an enlarged cross-sectional view showing "B" of Figure 5a.

Referring to FIGS. 4 and 5A and 5B , the compressor according to the present invention has a seal housing part 500 .

The seal housing part 500 is installed inside the compressor body part 100 so as to be disposed at a boundary between the first installation space a1 and the second installation space a2 .

The seal housing part 500 partitions the first and second installation spaces a1 and a2.

The seal housing part 500 is formed in a hollow shape. The driving shaft 220 passes through the seal housing part 500 .

The seal housing part 500 has a seal housing body 510 . The seal housing body 510 is formed in a hollow shape.

The seal housing body 510 has an upper body 520 . The upper body 520 is formed on the outer periphery of the seal housing body 510 . The upper body 520 is inclined at a predetermined angle along the side of the first installation space a1.

A stepped body 530 is formed on the hollow inner periphery of the seal housing body 510 .

The stepped body 530 extends from one end of the hollow inner periphery toward the center, and forms a stepped space 500a with the inner periphery of the hollow.

A shaft bearing 700 is installed in the step space 500a. The shaft bearing 700 guides the rotation of the drive shaft 220 .

At the position where the seal housing part 500 is installed, the outer peripheral shape of the driving shaft 220 is formed in a shape corresponding to the above-described outer peripheral shape of the stepped body 530 and the hollow inner peripheral shape.

The shaft bearing 700 is disposed in the stepped space 500a formed between the stepped body 530 and the hollow inner periphery.

In addition, the step body 530 is disposed to face the second seal member 620 with the shaft bearing 700 as a boundary.

The thickness of the step body 530 is smaller than the thickness of the second seal member 620 and is larger than the thickness of the first seal member 610 .

The compressor according to the present invention has an airtight portion ( 600 ).

The airtight part 600 is disposed on both sides of the seal housing part 500 , and is disposed to surround the outer periphery of the driving shaft 220 .

The airtight part 600 has the above-described first seal member 610 and the second seal member 620 . The first and second seal members 610 and 620 are generally formed in a ring shape.

The first seal member 610 is installed on one side of the seal housing body 510 .

A first fitting groove 501 is formed in one side of the seal housing body 510 . The first sealing member 610 is fitted and fixed to the first fitting groove 501 .

The second seal member 620 is installed on the other side of the seal housing body 510 .

The second seal member 620 is installed by being inserted into the second fitting groove 502 formed on the other side of the seal housing body 510 .

The outer peripheral positions of the first seal member 610 and the second seal member 620 are disposed along the same line with respect to the axis of the driving shaft 220 . However, the shapes of the first and second seal members 610 and 620 are different from each other.

Accordingly, the first seal member 610 ( ) is installed to surround the outer periphery of the drive shaft 220 in the first installation space (a) side. In addition, the second seal member 620 is installed so as to surround the outer periphery of the drive shaft 220 at the side of the second installation space (b) in which the rotating part is disposed. Here, the first and second seal members 610 and 620 are respectively fitted and fixed in the first and second fitting grooves 501 and 502 formed in a stepped groove shape.

In particular, the second seal member 620 is disposed on the side of the shaft bearing 700 described above.

The shapes of the first seal member 610 and the second seal member 620 will be described.

The first seal member 610 has a first seal inner peripheral body 611 and a first seal outer peripheral body 612 . The first seal inner peripheral body 611 and the first seal outer peripheral body 612 are integral with each other.

The first seal inner peripheral body 611 has a first width. The first seal outer peripheral body 612 has a second width. The first width is formed wider than the second width.

The first seal inner peripheral body 611 and the first seal outer peripheral body 612 are formed to form a stepped shape. The periphery of the stepped portion may be formed as a curved surface.

The first seal inner peripheral body 611 is in close contact with the outer periphery of the driving shaft 220 .

In addition, the thickness of the first seal inner peripheral body 611 is formed to be greater than the thickness of the first seal outer peripheral body 612 .

The second seal member 620 according to the present invention is disposed at a position opposite to the first seal member 610 with the seal housing body 510 as a boundary.

The second seal member 620 forms a second seal inner circumferential body 621 disposed to surround the outer periphery of the drive shaft 220, and a width narrower than the width of the second seal inner circumferential body 621, It has a second seal outer peripheral body (622) formed on the outer periphery of the second seal inner peripheral body (621).

The second seal outer peripheral body 622 is fitted and fixed in the second fitting groove 502 .

A thickness of the second seal inner circumferential body 621 is greater than a thickness of the second seal outer circumferential body 622 .

The second seal inner peripheral body 621 extends to have a predetermined length toward the axis line of the driving shaft 220 .

The second seal inner peripheral body 621 and the stepped body 530 of the above-described seal housing part 500 are formed to face each other.

A stepped space 500a is formed between the second seal outer peripheral body 622 and the stepped body 530 .

A shaft bearing 700 is disposed in the step space 500a.

Here, the step body 700 is formed to be shorter than the length of the second seal outer peripheral body 622 .

<109> The second seal outer peripheral body 622 and the second seal inner peripheral body 621 are formed in a stepped shape.

Here, the second seal inner periphery body 621, the second seal outer periphery body 622, and the second fitting groove 502 are formed along the centripetal axis with respect to the drive shaft 220 of the seal housing body 510 of The outer surface is sequentially stepped so as to be inclined along the first installation space (a1) in the second installation space (a2).

The inclination formed through the step as described above may be arranged along the inclined outer shape of the rotating part 400 , that is, the blade formed on the outer periphery of the impeller.

And the first seal member 610 according to the present invention is installed by being fitted in the first fitting groove (501).

The first seal member 610 forms a step that is inclined along the second installation space a2 in the first installation space a1.

That is, the first seal body 610 includes the first seal inner circumferential body 611, the first seal outer circumferential body 612, and the first fitting groove 501 along the centripetal axis with respect to the driving shaft 220. The outer surface of one side of the seal housing body 510 is sequentially stepped so as to be inclined along the second installation space a2 in the first installation space a1.

And an inclined surface is formed between the above-described seal housing body 510 and the upper body 520 .

The inclination of the inclined surface may form an inclination corresponding to the inclination of the rotating part that is the impeller. Here, the seal housing body 510 and one end of the inclined surface and the upper body 520 and the other end of the inclined surface may be connected through a curved surface.

In addition, the first seal member 610 according to the present invention may be disposed at a position between forming 30 to 70% of the total radius of the rotating part about the axis of the driving shaft 220 .

In addition, a plurality of unit seal members 611a in contact with the outer periphery of the driving shaft 220 are formed on inner periphery of the first seal member 610 and the second seal member 620 with a predetermined interval therebetween.

Meanwhile, the airtight part 600 according to the present invention may include a third seal member 630 .

The third seal member 630 is disposed on the other side of the seal housing body 510 and is in contact with the protrusion 400a formed on the outer periphery of the rotating part 400 .

A portion of the lower surface of the protrusion 400a protruding from the outer periphery of the rotating portion 400 may be in contact with a portion of the upper surface of the third seal member 630 fitted and fixed in the third fitting groove 503 .

In addition, in the other side of the seal housing member 510, the third fitting groove 503 formed at a position spaced apart from the second fitting groove 502 by a predetermined distance along the radial direction of the seal housing body 510 is fitted and installed. do.

The first seal member 610 according to the present invention described above with respect to the axis of the driving shaft 220 is disposed at a position that is displaced from the third seal member 630 .

For example, when the first seal member 610 according to the present invention is positioned between forming 30 to 70% of the total radius of the rotating part 400 around the axis of the driving shaft 220, the third seal member 630 is It may be disposed at a position greater than or equal to 70% of the total radius of the rotating part 400 .

Also, the three seal member 630 is positioned between the first seal member 610 and the second seal member 620 .

A boundary between one side surface of the second seal member 620 and the other side surface of the third seal member 630 coincides with each other.

In addition, in the third seal member 630, a plurality of other unit seal members (not shown) in contact with one surface of the protrusion 400a are formed at regular intervals.

6 is a cross-sectional view showing the pressure action in the first and second installation spaces according to the installation of the airtight part according to the present invention.

Referring to FIG. 6 , the first seal member 610 is installed on one side of the seal housing body 510 in the first installation space a1 side.

Here, the first seal member 510 is disposed within a radius of 30 to 70% of the rotating part.

At this time, the second seal member 620 is installed on the other side of the seal housing body 510 in the second installation space (a2) side. The outer periphery of the second seal member 620 is disposed along the same line as the first seal member 610 .

And the third seal member 630 is disposed at a position shifted from the first seal member 610 . The third seal member 630 is disposed at a position greater than or equal to 70% of the radius of the rotating part.

In particular, the distance between the second seal member 620 and the third seal member 630 constitutes a distance corresponding to the radius of the seal housing body 510 according to the present invention.

Also, a stepped region 500a is formed between the step body 530 formed on the hollow inner circumference of the seal housing body 510 and the second seal inner circumference body 621 of the second seal member 620 . A shaft bearing 700 is installed in the step region 500a. Substantially, the stepped region 500a may provide a space in which pressure is offset.

In the present invention, as the first seal member 610 is additionally configured, a space may be formed between the second seal member 620 and the stepped body 530 as described above.

The following describes the operation of the compressor having the above configuration. In the following description, reference will be made to FIGS. 2 to 7 for the configuration.

Referring to FIG. 4 , the refrigerant flowing from the evaporator 5 or the economizer 4 is introduced through the refrigerant inlet 101 .

The driving unit 200 rotates the driving shaft 220 . According to the rotation of the driving shaft 220, the first, second, and third rotation units 401, 402, 403 are rotated at a constant rotation speed. Here, the first, second, and third support parts 301 , 302 , 303 arranged to surround the first, second, and third rotating parts 401 , 402 , 403 are non-rotating.

Also, the rotating part 400 according to the present invention is rotated by the rotation of the driving shaft 220 . The rotating unit 400 compresses the incoming refrigerant to a predetermined pressure and discharges it.

At this time, as the rotation unit 400 rotates, pressures may be applied along the rear end side of the compressor as shown in FIG. 6 . The pressure may be applied to Psh and P1 including the driving shaft 220 .

In addition, one side of the seal housing part 500 disposed at the boundary between the first and second installation spaces a1 and a2 includes the driving shaft 220 and may act as Pbf1, Pbf2, and Pgear.

The above conditions may be as follows.

[Equation 1]

[Equation 2]

where F: thrust, r: radius where the seal teeth are located, P: pressure, Cm: refrigerant flow rate.

7 is a graph showing a change in thrust according to the position of the first seal member according to the present invention.

6 and 7, when the first seal member 610 according to the present invention is disposed at a position of 17 to 26% based on the diameter of the rotating part 400, as shown in FIG. 7, the thrust is reduced by 90%. can be sequentially reduced.

Also, according to the present invention, a pressure offset region is formed in the step space 500a by installing the first seal member 610, which is a shaft seal, at the rear end of the rotating part 400 in the same position as described above, thereby reducing the area where Pbf2 acts. can Accordingly, the compressor according to the present invention can reduce thrust.

According to the above configuration and action, the present invention reduces the pressure difference between the rotating part installation space and the driving part installation space to a certain level or less by installing an airtight part on the outer periphery of the drive shaft at the boundary between the rotating part installation space and the driving part installation space, so that the rotating part is rotated. It is possible to effectively reduce the generated thrust.

In addition, the present invention can prevent the refrigerant from leaking toward the rotating part driving unit when the refrigerant is compressed.

In addition, the inner surface of the first seal member according to the present invention may be fixed by being coupled to the inner peripheral surface of the first fitting groove in an uneven shape. In addition, the inner surface of the second seal member may be fixedly coupled to the inner peripheral surface of the second fitting groove in a concave-convex shape. In addition, the inner surface of the third seal member may be fixedly coupled to the inner peripheral surface of the third fitting groove in a concave-convex shape.

In addition, the first seal member and the first fitting groove may form a wave-shaped coupling. Accordingly, the area on which the pressure repelled by the pressure generated by the force generated when the rotating part is rotated is applied may be further expanded. Accordingly, there is also an advantage that the first seal member can be further miniaturized below a certain level.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various methods can be obtained by those skilled in the art within the scope of the technical spirit of the present invention. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

100: compressor body 101: refrigerant inlet
102: refrigerant outlet 200: driving unit
210: drive motor 220: drive shaft
300: support 400: rotating part
500: seal housing part 500a: step area
510: seal housing body 520: upper body
530: stepped body 600: airtight part
610: first seal member 620: second seal member
630: third seal member

Claims (12)

a compressor body having a refrigerant inlet at one end, a refrigerant outlet at the other end, and a first installation space and a second installation space;
a seal housing part installed inside the compressor body part so as to be disposed at a boundary between the first installation space and the second installation space;
a driving part disposed in the first installation space and having a driving shaft extending into the second installation space through the seal housing part;
a rotating part disposed in the second installation space and having a center connected to the driving shaft; and;
It includes a; is disposed on both sides of the seal housing portion, the airtight portion is arranged to surround the outer periphery of the drive shaft;
The secret part,
Both sides of the seal housing part are disposed at different positions,
compressor.
The method of claim 1,
The seal housing part,
a seal housing body defining a hollow;
an upper body formed to be inclined toward the first installation space from the upper end of the seal housing body;
and a step body extending from one end of the hollow inner periphery toward the center and forming a stepped space with the inner periphery of the hollow,
In the step space, a shaft bearing coupled to the outer periphery of the drive shaft is installed,
compressor.
3. The method of claim 2,
The secret part,
a first seal member installed on one side of the seal housing body;
a second seal member installed on the other side of the seal housing body;
The first seal member,
It is fitted and installed in a first fitting groove formed on one side of the seal housing body,
The second seal member,
Installed by being inserted into the second fitting groove formed on the other side of the seal housing body,
The second seal member,
disposed on the side of the shaft bearing,
compressor.
4. The method of claim 3,
The first seal member,
a first seal inner peripheral body having a first width and disposed to surround an outer periphery of the drive shaft;
a first seal outer periphery body having a second width narrower than the first width and formed on an outer periphery of the first seal member;
The thickness of the first seal outer peripheral body,
formed to be larger than the thickness of the first seal outer periphery body,
compressor.
5. The method of claim 4,
The second seal member,
a second seal inner peripheral body disposed to surround the outer periphery of the drive shaft;
a second seal outer peripheral body having a width narrower than that of the second seal inner peripheral body and formed on an outer periphery of the second seal member;
The thickness of the inner peripheral body of the second seal is,
The second seal outer peripheral body is formed to be larger than the thickness
The second seal inner peripheral body,
disposed on the side of the shaft bearing,
compressor.
6. The method of claim 5,
The step body,
Doedoe arranged to face the second seal member with the axis bearing as a boundary,
The thickness of the step body is,
is formed to be smaller than the thickness of the second seal member and larger than the thickness of the first seal member,
compressor.
4. The method of claim 3,
The first fitting groove and the second fitting groove are disposed on the same line with each other,
compressor.
4. The method of claim 3,
The secret part,
Provided with a third seal member,
The third seal member,
disposed on the other side of the seal housing body and in contact with the protrusion formed on the outer periphery of the rotating part,
compressor.
9. The method of claim 8,
On the other side of the seal housing member,
Installed by being inserted into the third fitting groove formed at a position spaced apart from the second fitting groove by a predetermined distance along the radial direction of the seal housing body,
The three seal members,
It is positioned between the first seal member and the second seal member,
A boundary between one side of the second seal member and the other side of the third seal member coincides with each other,
compressor.
3. The method of claim 2,
In the inner periphery of the first seal member and the second seal member,
A plurality of unit seal members in contact with the outer periphery of the drive shaft are formed at regular intervals,
compressor.
9. The method of claim 8,
The third seal member,
A plurality of other unit seal members in contact with one surface of the protrusion are formed at regular intervals,
compressor.
With the compressor of claim 1,
turbo chiller.

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