JPH0842471A - Scroll compressor - Google Patents

Abstract

PURPOSE:To restrain dislocation in concentricity and parallelism between the bearing part positions of a motor element to the minimum by setting respective tack positions adjacent to each other in the circumferential direction of a case located between the tack positions in which a refrigerant gas suction port is provided, so as to go away from the installed part position of suction port at unequal intervals. CONSTITUTION:The tack position T of a main frame 8 against a case 2 is tacked into T1-T4 at unequal intervals in the circumferential direction, a refrigerant gas suction port 5 is provided on the side part of the case 2 corresponding to the position in response to the center part of the tack positions T1, T2 of the largest interval (opening angle theta=63 deg.) among a plurality of the tack positions T1-T4, and the provided part position P is set so as to go away from the respective tack positions T1, T2 adjoining in the circumferential direction of the case 2 at unequal intervals. Hereby, influence, of thermal strain phenomenon of the case 2 generated due to unequal temperature distribution by refrigerant gas suction in operation on the main frame 8 can be reduced, and dislocation of concentricity and parallelism between the bearing part positions of a motor element 30 can be restrained to the minimum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor mounted in, for example, an air conditioner or a refrigerator, and particularly to a shaft of an electric element for driving a scroll compression element housed in a case of a closed container body. By devising the shaft support structure, it absorbs the thermal strain phenomenon of the case due to the non-uniform temperature distribution that occurs when the refrigerant gas is sucked in during operation, and minimizes the misalignment range of coaxiality and parallelism between shaft shaft supports. It is something that is kept to a minimum.

[0002]

2. Description of the Related Art Conventionally, in a scroll compressor of this type, as shown in FIG. 6, a scroll compression element B and a scroll compression element B are driven in a cylindrical case a forming a closed container body A. The orbiting scroll b1 of the scroll compression element B is connected to the eccentric shaft portion of the shaft c1 of the electric element C, which will be described later, and revolves with respect to the fixed scroll b2 so as not to rotate to cause eccentric motion. By doing so, in the compression chamber b3 formed by meshing of spiral wraps formed on the orbiting scroll b1 and the fixed scroll b2, the case a corresponding to the low pressure side is formed.
The refrigerant gas supplied from the suction port a1 provided on the side surface of the container is compressed, and the compressed refrigerant gas is discharged from the discharge port a2 provided on the high pressure side of the upper portion of the closed container body A.

The electric element C is a shaft c1.
And a rotor c2 into which the shaft c1 is fitted and a stator c3 into which the rotor c2 is rotatably fitted. The upper end of the shaft c1 is attached to the upper part of the case a by a tack pin. While it is axially supported by a bearing portion e1 of a main frame e fixed from the outside at a plurality of positions in the circumferential direction at d, its lower end is attached to a lower part in the case a from outside by a tack pin f. The bearing member i is supported by a fixed bracket g via a bolt h, and the central axes of the bearing portion e1 of the main frame e and the bearing member i are positioned on the same axis OO. Has been done.

[0004]

However, in the scroll compressor having the above-described conventional structure, since the refrigerant gas suction port a1 is installed on the side surface of the case a, the refrigerant gas is not discharged during operation. When the air is sucked into the low-pressure side in the closed container body A, a non-uniform temperature distribution occurs in the case a such that the temperature in the vicinity of the installation site P of the suction port a1 becomes low.

The influence of such temperature distribution in case a is as follows.
A main frame e and a bearing member i fixed in the case a
There is no problem if the structure is formed by integrally connecting and with a bolt or the like, but the main frame e and the bearing member i are independently provided in the case a, or the suction port a1 is provided in the main frame e. It is installed below the tack position T, or, as shown in FIG. 7, the tack pins T with respect to the case a have four tack positions T1, T2, T3, T4 in the circumferential direction of the main frame e. With a space, the central portion between the tack positions T1 and T2 (opening angle θ = 45
8), or the tack positions T1, T2, T in the circumferential direction of the main frame e as shown in FIG.
3, T4 are made unequal, and a portion corresponding to the central portion (opening angle θ = 27 °) between the tuck positions T1 and T2 of the minimum spacing, or as shown in FIG.
When the tack positions T1, T2, T3, T4 in the circumferential direction of the suction port a1 are installed at positions corresponding to one tack position T1 at equal intervals, the suction port a1
A portion having a low temperature near the installation portion P attempts to be relatively shrunk, and the thermal distortion phenomenon of the case a causes the main frame e to be pushed from the suction port a1 side to the opposite side.

Moreover, the case a is bent into a dogleg shape due to a local thermal strain phenomenon, and the central axis O1 of the bearing portion e1 of the main frame e and the central axis O2 of the bearing member i are mutually formed. ,
As shown in FIG. 6, when the coaxial and parallelism between the main frame e and the bearing member i is accurately assembled at the time of assembly in order to deviate from the coaxial O-O in a V shape, During operation, a deviation of the coaxiality (deviation amount: μm) and a deviation of the parallelism (tilt angle: × 1/100 °) occur.

As a result, since the load applied to the electric element C becomes large, there is a problem that not only the initial input during operation increases but also the durability and reliability of the bearing portion and the like decrease.

[0008]

It is an object of the present invention to avoid the influence of the thermal strain phenomenon of the case, which occurs due to the non-uniform temperature distribution due to the suction of the refrigerant gas during operation, and to achieve the coaxiality between the bearing parts of the electric element and By minimizing the deviation of parallelism,
An object of the present invention is to provide a scroll compressor capable of preventing an increase in initial input during operation and improving durability and reliability of a bearing portion and the like.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an electric element in a closed container body consisting of a cylindrical case which is capped in a closed state by upper and lower caps. A scroll compression element driven by an electric element is housed, and an orbiting scroll of the scroll compression element is connected to an eccentric shaft portion of a shaft of the electric element to revolve an eccentric motion of the fixed scroll so as not to rotate. As a result, the refrigerant supplied from the suction port provided in the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed on the orbiting scroll and the fixed scroll. A gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high pressure side of the upper portion of the closed container body, while the shaft of the electric element is provided. The upper and lower end sides are fixed to the upper part of the case of the closed container body by tack pins from the outside in a plurality of positions in the circumferential direction, and the main frame bearing portion is independently opposed to the main frame bearing portion. In the scroll compressor, which is rotatably supported between the scroll compressor and a bearing member supported via a bracket fixed from the outside by a tack pin in the lower part of the case of the closed container body, the suction port is , Installed on the side surface of the case corresponding to a position corresponding to one of a plurality of tack positions in the circumferential direction of the main frame, and mutually in the circumferential direction between the tack positions in which this suction port is installed. Each of the tack positions adjacent to each other is arranged at unequal intervals so as to be farther from the site where the suction port is installed.

Further, in the scroll compressor of the present invention, the tack positions of the main frame are arranged at unequal intervals in the circumferential direction, and the positions correspond to the central portion between the tack positions at the maximum intervals. The side wall of the case is provided with the suction port.

Further, the scroll compressor of the present invention is
The height of the tack position of the main frame is at least at the same position as the installation site of the suction port or closer to the bearing member side supported by the bracket than the installation site of the suction port. .

Further, in the scroll compressor of the present invention, a support portion corresponding to the installation portion side of the suction port between the bracket and the bearing member and a support portion corresponding to the opposite side of the installation portion of the suction port. A spacer member is interposed between the suction port and the site, and the coefficient of thermal expansion of the spacer member corresponding to the installation site side of the suction port is made larger than the thermal expansion coefficient of the spacer member corresponding to the opposite side of the installation site of the suction port. It is configured as follows.

Further, in the scroll compressor of the present invention, the portion of the bearing member corresponding to the opposite side of the installation portion of the suction port is closer to the main frame side than the portion corresponding to the installation portion side of the suction port. As described above, it is configured to be inclined and arranged in advance.

[0014]

That is, according to the present invention, by adopting the above structure, the electric element and the scroll compression element driven by the electric element are housed in the case of the closed container body, and the scroll compression element is rotated. In the compression chamber formed by the meshing of the spiral wraps formed in the scroll and the fixed scroll, the refrigerant gas supplied from the suction port provided on the side surface of the case corresponding to the low pressure side of the closed container body is compressed. On the other hand, the upper and lower ends of the shaft of the electric element are attached to the upper part of the case by tack pins, and the bearing part of the main frame is fixed from the outside in a plurality of positions in the circumferential direction,
The main frame is independently rotatably supported by a bearing member that is independently opposed to the bearing portion of the main frame and is supported by a bracket fixed from the outside by a tack pin to the lower portion of the case. The mouth is installed on the side surface of the case corresponding to one of the plurality of tack positions in the circumferential direction of the main frame, and the suction ports are adjacent to each other in the circumferential direction between the tack positions. Since the matching tack positions are arranged at unequal intervals so as to be farther from the suction port installation site, the main case of thermal strain phenomenon that occurs due to non-uniform temperature distribution due to refrigerant gas suction during operation There is less impact on the frame, which minimizes misalignment of coaxiality and parallelism between the bearing portions of the electromotive element.

Further, the respective tack positions of the main frame are arranged at unequal intervals in the circumferential direction, and the suction ports are provided on the side surface portions of the case corresponding to the central portions between the tack positions at the maximum intervals. By providing this, the influence of the thermal distortion phenomenon of the case, which occurs due to the non-uniform temperature distribution due to the suction of the refrigerant gas during operation, on the main frame is reduced, so the coaxiality and parallelism between the bearing parts of the electric element are reduced. The deviation is minimized.

Further, the tack position of the main frame, which is fixed to the upper part of the case from the outside by the tack pin, is at least at the same position as the site where the suction port is installed, or the tack pin is located below the site where the suction port is installed in the case. By bringing it closer to the bearing member side supported by the bracket that is fixed from the outside, the influence of the thermal strain phenomenon of the case that occurs due to the nonuniform temperature distribution due to the suction of the refrigerant gas on the main frame on the main frame is reduced. Therefore, the deviation of the coaxiality and the parallelism between the bearing portions of the electric element can be minimized.

Furthermore, a spacer member is interposed between a support portion corresponding to the installation portion side of the suction port between the bracket and the bearing member and a support portion corresponding to the opposite side of the installation portion of the suction port. By making the coefficient of thermal expansion of the spacer member corresponding to the opposite side of the installation site of the intake port larger than that of the spacer member corresponding to the installation site side of the intake port, the uneven temperature distribution due to the intake of the refrigerant gas during operation. In accordance with the thermal strain phenomenon of the case that occurs in, each spacer member also thermally expands, the bearing member supported by the bracket is corrected by the difference in the coefficient of thermal expansion in the direction to maintain the parallelism, Deviations in coaxiality and parallelism between the bearing parts of the electric element are minimized.

In addition, by arranging the bearing member in such a manner that the portion corresponding to the opposite side of the installation portion of the suction port is closer to the main frame side than the portion corresponding to the installation portion side of the suction port, the bearing member is operated. In response to the thermal strain phenomenon of the case that occurs due to the non-uniform temperature distribution due to the suction of the refrigerant gas inside, the inclination is corrected in the direction in which the bearing member supported by the bracket maintains the parallelism from the inclined state, Deviations in coaxiality and parallelism between the bearing parts of the electric element are minimized.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, each embodiment of the present invention will be described in detail with reference to the drawings shown in FIG. 1 to FIG.
Shows a first embodiment of the scroll compressor according to the present invention.

As shown in FIG. 1, reference numeral 1 in the drawing is a closed container body, and this closed container body 1 has a cylindrical case 2 and upper and lower ends capped on both upper and lower open ends of the case 2. It is formed by the caps 3 and 4.

A scroll compression element 20 and an electric element 30 for driving the scroll compression element 20 are housed in the closed container body 1.
The orbiting scroll 21 of 0 is connected to an eccentric shaft portion 31a provided at an upper end portion of a shaft 31 of an electric element 30 to be described later, and revolves with respect to the fixed scroll 22 so as not to rotate to cause an eccentric movement, whereby the orbiting scroll 21 is rotated. And a spiral wrap 21a formed on the fixed scroll 22 and
In the compression chamber 23 formed by meshing 22a, the refrigerant gas supplied from the suction port 5 provided on the side surface portion of the case 2 corresponding to the low pressure side of the closed container body 1 is compressed, and the compressed refrigerant gas is discharged. The airtight container body 1 has a structure in which it is discharged from a discharge port 6 provided on the high pressure side.

The electric element 30 has a shaft 31.
And a stator 32 into which the shaft 31 is inserted and a stator 33 into which the rotor 32 is rotatably inserted. An upper portion 31b of the shaft 31 is a tack pin on an upper portion of the case 2. 7 is axially supported by a bearing portion 8a of a main frame 8 fixed from the outside at a plurality of positions in the circumferential direction at 7, while its lower end portion 31c has a lower end portion 31c.
A bearing member 12 supported via a bolt 11 to a bracket 10 which is fixed to the lower part inside by tack pins 9 from the outside.
The main frame 8 is supported by
Central axis O1 of the bearing portion 8a and central axis O2 of the bearing member 12
Are positioned on the coaxial OO independently of each other.

In the main frame 8, as shown in FIG. 2, the tack positions T of the main frame 8 with respect to the case 2 are tacked T1, T2, T3, T4 at unequal intervals in the circumferential direction. The suction port 5 has a plurality of tack positions T.
1, T2, T3, T4 is installed on the side surface portion of the case 2 corresponding to the position corresponding to the central portion (opening angle θ = 63 °) of the tack positions T1 and T2 having the maximum spacing. In addition, the installation site P is located further away from the respective tack positions T1 and T2 adjacent to each other in the circumferential direction, so that the nonuniform temperature distribution due to the suction of the refrigerant gas during the operation of the case 2 occurs. The main frame 8 is less affected by the thermal strain phenomenon.

FIG. 3 shows a second embodiment according to the present invention, in which the tack positions T of the main frame 8 with respect to the case 2 are three points T1, T2, T1, T2, which are unequal in the circumferential direction.
The suction port 5 is set to T3, and the suction port 5 is installed correspondingly to the side surface portion of the case 2 corresponding to the central portion (opening angle θ = 63 °) between the tack positions T1 and T2 of the maximum distance. The main frame 8 is less affected by the thermal strain phenomenon of the case 2 caused by the non-uniform temperature distribution due to the gas suction.

Further, FIG. 4 shows a third embodiment according to the present invention, in which the tack position T of the main frame 8 with respect to the case 2 is at least at the same position as the installation site P of the suction port 5 or more. The heat distortion phenomenon of the case 2 caused by the non-uniform temperature distribution due to the suction of the refrigerant gas during operation is caused by bringing the lower part closer to the bearing member 12 side supported by the lower part in the case 2. The main frame 8 is less affected.

Furthermore, FIG. 5 shows a fourth embodiment according to the present invention, in which a first spacer is provided at a supporting portion between the bracket 10 and the bearing member 12 fixed to the lower portion of the case 2. The coefficient of thermal expansion of the first spacer member 13 interposed between the member 13 and the second spacer member 14 and the support portion corresponding to the installation portion P side of the suction port 5 is set to the installation position of the suction port 5. A case where the coefficient of thermal expansion is made larger than that of the second spacer member 14 interposed in the support portion corresponding to the opposite side of the portion P, and as a result, non-uniform temperature distribution occurs due to the suction of the refrigerant gas during operation. According to the thermal strain phenomenon of No. 2, each spacer member 13, 1
4 is thermally expanded, and the bearing member 12 supported by the bracket 10 is corrected in a direction in which parallelism is maintained due to the difference in the coefficient of thermal expansion.

Although not shown, the bearing member 12 supported by the bracket 10 fixed to the lower portion of the case 2 is previously sucked at a portion corresponding to the opposite side of the suction port 5 installation portion P. The case 5 is arranged so as to be inclined so as to come closer to the main frame 8 side than the part corresponding to the installation site P side of the mouth 5, and this causes a non-uniform temperature distribution due to the suction of the refrigerant gas during operation. It is also possible to adopt a configuration in which the bearing member 12 supported by the bracket 10 has its inclination corrected from the inclined state in the direction of maintaining parallelism in accordance with the thermal strain phenomenon.

In each of the above embodiments,
As means for absorbing the thermal strain phenomenon of the case 2 caused by the non-uniform temperature distribution due to the suction of the refrigerant gas during operation, the tack positions T1, T2, T3, T4 in the circumferential direction of the main frame 8 with respect to the case 2 or T1, T2
The intervals of T3 may be unequal intervals, or the height of the tack position T may be arranged at the same level as the installation position P of the suction port 5 or on the bearing member 12 side below the case, or
Although the spacer members 13 and 14 having different thermal expansion coefficients are arranged at the supporting portion of the bearing member 12 supported in the lower part of the case 2, and further, the bearing member 12 is inclined in advance. It is also possible to appropriately combine and configure.

[0029]

As is apparent from the above description, according to the present invention, an electric element and a scroll compression element driven by the electric element are housed in the case of the closed container body, and the scroll compression element is rotated. In the compression chamber formed by the meshing of the spiral wraps formed in the scroll and the fixed scroll, the refrigerant gas supplied from the suction port provided on the side surface of the case corresponding to the low pressure side of the closed container body is compressed. On the other hand, the upper and lower ends of the shaft of the electric element are secured to the upper part of the case by tack pins from the outside at a plurality of positions in the circumferential direction, and the bearing part of the main frame is independent of the bearing part of the main frame. Are rotatably supported between a bearing member that is supported by a bracket fixed to the lower part of the case by tack pins from the outside and are supported by a suction pin. Is installed on the side surface of the case corresponding to a position corresponding to one of the plurality of tack positions in the circumferential direction of the main frame. Since the tack positions are arranged at unequal intervals so as to be farther from the site where the suction port is installed, it affects the main frame of the thermal strain phenomenon of the case that occurs due to the non-uniform temperature distribution due to the suction of the refrigerant gas during operation. There is little influence, and this can minimize the deviation of the coaxiality and parallelism between the bearing parts of the electric element, so that the load applied to the electric element can be reduced, and it can be done during conventional operation. It is possible to prevent an increase in the initial input of, and to improve the durability and reliability of the bearing and the like.

Further, according to a second aspect of the present invention, the tack positions of the main frame are arranged at unequal intervals in the circumferential direction, and the side surface of the case corresponds to a position corresponding to the central portion between the tack positions having the maximum intervals. By correspondingly providing the suction port to the parts, the influence of the thermal strain phenomenon of the case, which occurs due to the non-uniform temperature distribution due to the suction of the refrigerant gas during operation, on the main frame is reduced, so that the bearing of the electric element is It is possible to minimize the deviation of coaxiality and parallelism between the parts.

Further, according to a third aspect of the present invention, the tack position of the main frame is at least at the same position as the installation site of the suction port or closer to the bearing member side supported by the bracket than the installation site of the suction port during operation. Since the influence of the thermal strain phenomenon of the case caused by the non-uniform temperature distribution due to the suction of the refrigerant gas on the main frame is reduced, the deviation of the coaxiality and parallelism between the bearing parts of the electric element is minimized. Can be suppressed.

Further, according to the present invention, spacer members are provided on the support portion corresponding to the installation portion side of the suction port between the bracket and the bearing member and the support portion corresponding to the opposite side of the installation portion of the suction port. By interposing, respectively, the thermal expansion coefficient of the spacer member corresponding to the installation site side of the intake port to be larger than that of the spacer member corresponding to the opposite side of the installation site of the intake port, the refrigerant gas is sucked in during operation. According to the thermal strain phenomenon of the case that occurs due to the non-uniform temperature distribution, each spacer member also thermally expands, and the bearing member supported by the bracket is corrected to maintain parallelism due to the difference in their thermal expansion coefficients. Therefore, the deviation of the coaxiality and the parallelism between the bearing portions of the electric element can be minimized.

According to the present invention, the bearing member is arranged so as to be inclined in advance so that the portion corresponding to the side opposite to the site where the suction port is installed is closer to the main frame side than the site corresponding to the side where the suction port is installed. By doing so, the inclination of the bearing member supported by the bracket is corrected from the inclined state to maintain parallelism in response to the thermal strain phenomenon of the case caused by the non-uniform temperature distribution due to the suction of the refrigerant gas during operation. Therefore, the deviation of the coaxiality and the parallelism between the bearing portions of the electric element can be minimized.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of a scroll compressor according to the present invention.

FIG. 2 is an explanatory view showing the relationship between the tack position of the main frame and the installation position of the suction port with respect to the case.

FIG. 3 is an explanatory view of the relationship between the tack position of the main frame and the installation position of the suction port with respect to the case showing the second embodiment of the scroll compressor according to the present invention.

FIG. 4 is a vertical sectional side view showing a third embodiment of the scroll compressor according to the present invention.

FIG. 5 is a vertical sectional side view showing a fourth embodiment of the scroll compressor according to the present invention.

FIG. 6 is a schematic vertical sectional side view showing the overall configuration of a conventional scroll compressor.

FIG. 7 is an explanatory view showing the relationship between the tack position of the main frame and the installation position of the suction port with respect to the conventional case.

FIG. 8 is an explanatory view showing the relationship between the tack position of the main frame and the installation position of the suction port with respect to another conventional case.

FIG. 9 is an explanatory view showing the relationship between the tack position of the main frame and the installation position of the suction port for another conventional case.

[Explanation of symbols]

1 ... airtight container, 2 ... case, 3 ... upper end cap, 4 ... lower end cap, 5 ... suction port,
6 ... discharge port, 7 ... tack pin,
8 ... Main frame, 8a ... Bearing part,
9 ... Tuck pin, 11 ... Bracket, 12 ... Bearing member, 13 ...
First spacer member, 14 ... Second spacer member, 20 ... Scroll compression element, 21 ...
..Rotating scrolls, 21a ... laps,
22 ... Fixed scroll, 22a ... Wrap, 23 ... Compression chamber, 30 ... Electric element, 31 ... Shaft, 31a
... Eccentric shaft part, 31b ... Upper end part,
31c ... Lower end, T, T1, T2, T3, T4 ...
-Tuck position of main frame, P ... Installation position of suction port, OO ... Coaxial, O1 ... Main frame bearing center axis, O2 ... Bearing center axis of bearing member.

Claims (5)

[Claims] 1. An electric element in a closed container body consisting of a cylindrical case that is capped in a closed state by upper and lower caps,
A scroll compression element driven by the electric element is housed, and the orbiting scroll of the scroll compression element is connected to the eccentric shaft portion of the shaft of the electric element to revolve so as not to rotate with respect to the fixed scroll for eccentric movement. By doing so, it is supplied from the suction port provided in the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed in the orbiting scroll and the fixed scroll. The refrigerant gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high-pressure side of the upper portion of the closed container body, while the upper and lower end portions of the shaft of the electric element are attached to the closed container body case. The bearing part of the main frame, which is fixed to the upper part from the outside at a plurality of positions in the circumferential direction by tack pins, and the shaft of the main frame. Compressor which is rotatably supported between a bearing member supported by a bracket fixed to the lower part inside the case of the hermetically sealed container body by a tack pin from the outside so as to be independently opposed to the above portion. In the above, the suction port is installed on a side surface portion of the case corresponding to a position corresponding to one of a plurality of tack positions in the circumferential direction of the main frame, and between the tack positions where the suction port is installed. 2. The scroll compressor, wherein the respective tack positions adjacent to each other in the circumferential direction are arranged at unequal intervals so as to be farther from the installation site of the suction port. 2. An electric element in a closed container body comprising a cylindrical case which is capped in a closed state by upper and lower caps,
A scroll compression element driven by the electric element is housed, and the orbiting scroll of the scroll compression element is connected to the eccentric shaft portion of the shaft of the electric element to revolve so as not to rotate with respect to the fixed scroll for eccentric movement. By doing so, it is supplied from the suction port provided on the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed on the orbiting scroll and the fixed scroll. The refrigerant gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high-pressure side of the upper portion of the closed container body, while the upper and lower end portions of the shaft of the electric element are attached to the closed container body case. The bearing part of the main frame, which is fixed to the upper part from the outside at a plurality of positions in the circumferential direction by tack pins, and the shaft of the main frame. Compressor which is rotatably supported between a bearing member supported by a bracket fixed to the lower part inside the case of the hermetically sealed container body by a tack pin from the outside so as to be independently opposed to the above portion. In the above, the respective tack positions of the main frame are arranged at unequal intervals in the circumferential direction, and the suction ports are provided on the side surface part of the case corresponding to the position corresponding to the central part between the tack positions at the maximum intervals. A scroll compressor characterized by being provided. 3. An electric element in a hermetic container body consisting of a cylindrical case capped in a hermetically sealed state by upper and lower caps,
A scroll compression element driven by the electric element is housed, and the orbiting scroll of the scroll compression element is connected to the eccentric shaft portion of the shaft of the electric element to revolve so as not to rotate with respect to the fixed scroll for eccentric movement. By doing so, it is supplied from the suction port provided in the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed in the orbiting scroll and the fixed scroll. The refrigerant gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high-pressure side of the upper portion of the closed container body, while the upper and lower end portions of the shaft of the electric element are attached to the closed container body case. The bearing part of the main frame, which is fixed to the upper part from the outside at a plurality of positions in the circumferential direction by tack pins, and the shaft of the main frame. Compressor which is rotatably supported between a bearing member supported by a bracket fixed to the lower part inside the case of the hermetically sealed container body by a tack pin from the outside so as to be independently opposed to the above portion. The height of the tack position of the main frame is at least at the same position as the installation site of the suction port or closer to the bearing member side supported by the bracket than the installation site of the suction port. Scroll compressor. 4. An electric element in a hermetic container body consisting of a cylindrical case that is capped in a hermetically sealed state by upper and lower caps.
A scroll compression element driven by the electric element is housed, and the orbiting scroll of the scroll compression element is connected to the eccentric shaft portion of the shaft of the electric element to revolve so as not to rotate with respect to the fixed scroll for eccentric movement. By doing so, it is supplied from the suction port provided in the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed in the orbiting scroll and the fixed scroll. The refrigerant gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high-pressure side of the upper portion of the closed container body, while the upper and lower end portions of the shaft of the electric element are attached to the closed container body case. The bearing part of the main frame, which is fixed to the upper part from the outside at a plurality of positions in the circumferential direction by tack pins, and the shaft of the main frame. Compressor which is rotatably supported between a bearing member supported by a bracket fixed to the lower part inside the case of the hermetically sealed container body by a tack pin from the outside so as to be independently opposed to the above portion. A spacer member is interposed between a support portion corresponding to the installation site side of the suction port between the bracket and the bearing member and a support site corresponding to the opposite side of the installation site of the suction port. A scroll compressor characterized in that a thermal expansion coefficient of a spacer member corresponding to the installation site side of the mouth is made larger than a thermal expansion coefficient of a spacer member corresponding to the opposite side of the installation site of the suction port. 5. An electric element in a closed container body, which comprises a cylindrical case capped in a closed state by upper and lower caps,
A scroll compression element driven by the electric element is housed, and the orbiting scroll of the scroll compression element is connected to the eccentric shaft portion of the shaft of the electric element to revolve so as not to rotate with respect to the fixed scroll for eccentric movement. By doing so, it is supplied from the suction port provided in the side surface portion of the case corresponding to the low pressure side of the closed container body in the compression chamber formed by the meshing of the spiral wraps formed in the orbiting scroll and the fixed scroll. The refrigerant gas is compressed, and the compressed refrigerant gas is discharged from a discharge port provided on the high-pressure side of the upper portion of the closed container body, while the upper and lower end portions of the shaft of the electric element are attached to the closed container body case. The bearing part of the main frame, which is fixed to the upper part from the outside at a plurality of positions in the circumferential direction by tack pins, and the shaft of the main frame. Compressor which is rotatably supported between a bearing member supported by a bracket fixed to the lower part inside the case of the hermetically sealed container body by a tack pin from the outside so as to be independently opposed to the above portion. In the above, the bearing member may be arranged so as to be inclined in advance so that the portion corresponding to the opposite side of the installation portion of the suction port is closer to the main frame side than the portion corresponding to the installation portion side of the suction opening. Characteristic scroll compressor.