JP2005180297A - Scroll compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scroll compressor capable of miniaturizing a structure while holding the sufficient oil separating effect. <P>SOLUTION: This scroll compressor 1 has a housing 2 for connecting a suction pipe 7 and a delivery pipe 8 to an upper part, a fixed scroll 9 fixed and supported in the housing 2, a revolving scroll 10 meshed with the fixed scroll 9, checking autorotation with respect to the fixed scroll 9 and making revolving motion, and a separator cover 13 arranged in an upper part of the fixed scroll 9 and delivering high pressure gas as a swirling flow to an upper space of the housing 2. The scroll compressor is characterized by arranging a delivery part of the separator cover 13 in a separator cover 13 side part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a scroll compressor suitable for use in, for example, a refrigerant compressor of an air conditioner.

A scroll compressor used in a refrigerant compressor of an air conditioner or the like includes a fixed scroll, a turning scroll, and an Oldham link mechanism that prevents rotation. In this scroll compressor, one fixed scroll is a stationary scroll fixedly supported in a housing to which a suction pipe and a discharge pipe are connected. The other orbiting scroll is arranged in mesh with the fixed scroll in the up / down or left / right direction, is prevented from rotating by the Oldham link mechanism, and is connected to a driving source such as an electric motor so as to revolve around the fixed scroll. Exercise. This orbiting scroll is in contact with the fixed scroll at a plurality of contact points to form a crescent-shaped compression chamber, and the compression chamber moves inward while reducing the volume from the outer peripheral side, thereby sucking, compressing and discharging. Can be done simultaneously.

  In this scroll compressor, the compressed high-pressure refrigerant gas contains lubricating oil that lubricates sliding portions such as scroll portions. When the refrigerant gas is sent to the heat exchanger with the lubricating oil contained therein, there is a problem that the heat exchange efficiency is lowered due to the presence of the oil, or the reliability of the compressor is impaired due to a decrease in the oil in the compressor. Therefore, it is required to reduce the oil content contained in the refrigerant gas sent from the scroll compressor to the heat exchanger.

  There exists what is shown in patent document 1 as what reduces the oil content rate contained in this refrigerant | coolant gas. This is provided with a discharge cover that covers a discharge port from a scroll type compression mechanism composed of a fixed scroll and a turning scroll, and once receives the high-pressure refrigerant gas compressed by this discharge cover. Thereafter, a high-pressure refrigerant gas is discharged from the upper part of the discharge cover into the sealed container in an obliquely upward direction, and a swirling flow is generated in the sealed container. The centrifugal force generated by the swirling flow of the refrigerant gas causes the oil to scatter outward and adhere to and separate from the inner wall of the sealed container.

Japanese Patent Laid-Open No. 7-189940 (paragraph [0011] and FIG. 1)

By the way, what is described in Patent Document 1 discharges high-pressure refrigerant gas in an obliquely upward direction into the sealed container from the upper part of the discharge cover to generate a swirling flow in the sealed container. Above this, a space for oil separation is required, and the length in the vertical direction increases accordingly, resulting in an increase in size.
In addition, when a sufficient space is not provided above the discharge cover, the gap between the discharge pipe and the discharge cover is small, so that refrigerant gas with insufficient oil separation is sent to the heat exchanger.
Further, since a swirling flow of high-pressure (high-temperature) refrigerant gas is generated in the sealed container, this collides with the suction pipe. Therefore, the suction pipe is warmed, and as a result, the suction gas inside is warmed. When the intake gas is warmed, the density is reduced, so that the compression performance is lowered. As described above, when the space above the discharge cover is increased, this influence is increased.

  In view of the above problems, an object of the present invention is to provide a scroll compressor capable of reducing the size of the structure while maintaining a sufficient oil separation effect.

In order to solve the above problems, the present invention employs the following means.
In the scroll compressor according to the present invention, the housing having the suction pipe and the discharge pipe connected to the upper part thereof, the fixed scroll fixedly supported in the housing, and the fixed scroll are engaged with each other, and the rotation of the fixed scroll is prevented. In the scroll compressor, the orbiting scroll that performs a revolving orbiting motion, and the separator cover that is provided at the upper part of the fixed scroll and that discharges high-pressure gas as a swirling flow into the upper space of the housing. Is provided on the side of the separator cover.

As described above, since the high-pressure gas is discharged horizontally from the side of the separator cover into the housing, the space corresponding to the side of the separator cover in the housing can also be effectively utilized for lubricating oil separation. Therefore, since the height of the upper space of the separator cover can be reduced, the compressor can be downsized accordingly.
Further, if the height of the upper space of the separator cover can be reduced, the area where the suction pipe contacts the high pressure gas is reduced. Thereby, since the temperature rise of suction | inhalation gas can be reduced, the compression efficiency of a scroll compressor improves.

  The scroll compressor according to the present invention is characterized in that a concave portion recessed inward is formed in an upper central portion of the separator cover, and an inner opening end portion of the discharge pipe is disposed in the concave portion.

  In this way, since the inner opening end of the discharge pipe is arranged in the recess provided in the upper center part of the separator cover, the high-pressure gas discharged from the side of the separator cover passes into the discharge pipe in the middle of swirling. There is no inflow. For this reason, the high pressure gas surely swirls in the housing and separates the lubricating oil, and then flows into the discharge pipe, so that the content of the lubricating oil contained in the high pressure gas discharged from the scroll compressor decreases.

  Furthermore, in the scroll compressor of the present invention, the lower end portion of the concave portion regulates a discharge valve provided in the discharge portion of the compression portion.

  Thus, since the lower end part of a recessed part has controlled the discharge valve, a discharge valve retainer becomes unnecessary. Therefore, the manufacturing cost is low.

  In the scroll compressor of the present invention, the separator cover is made of resin.

  Thus, since the separator cover was formed with resin, it can be manufactured integrally by injection molding. Therefore, manufacture is simple and inexpensive.

  Further, in the scroll compressor according to the present invention, a plurality of attachment portions provided around the separator cover are provided with U-shaped recesses at the respective tip portions, and the fixed scroll has a cylinder corresponding to the recesses. The section is installed.

  According to the present invention, the cylindrical cover is installed at each predetermined position of the fixed scroll, and the separator cover is fixed by inserting the U-shaped recess into the cylindrical part using the elasticity of the resin in the cylindrical part. Can be attached to a scroll. As described above, since the installation of the separator cover is completed simply by pushing the mounting portion of the separator cover into the cylindrical portion installed on the fixed scroll, the assembly is easy and the number of assembling steps is reduced.

  In the scroll compressor according to the present invention, a plurality of attachment portions provided around the separator cover are provided so as to extend below the side portions of the separator cover, and a claw portion is formed at the tip portion. And the attachment hole which has an engaging part engaged with the said nail | claw part is provided in the position corresponding to the said attaching part of the said fixed scroll, It is characterized by the above-mentioned.

  According to the present invention, the separator cover can be attached to the fixed scroll by inserting the claw portion of the attachment portion into the attachment hole provided at a predetermined position of the fixed scroll and engaging the engagement portion with the engagement portion. As described above, since the installation of the separator cover is completed simply by adjusting the position and pushing the attachment portion of the separator cover, assembly is easy and the number of assembly steps is reduced.

According to the invention described in claim 1, since the high pressure gas is discharged horizontally from the side of the separator cover into the housing, the upper space of the separator cover can be lowered, and the compressor can be reduced accordingly. Can be downsized.
Further, if the height of the upper space of the separator cover can be reduced, the area where the suction pipe contacts the high pressure gas is reduced, so that the compression efficiency of the scroll compressor is improved.

  According to the invention described in claim 2, since the inner opening end of the discharge pipe is disposed in the recess provided in the upper central portion of the separator cover, it is contained in the high-pressure gas discharged from the scroll compressor. The content of lubricating oil is reduced.

  According to the invention described in claim 3, since the lower end portion of the recess regulates the discharge valve, the discharge valve retainer is not required, and the manufacturing cost is reduced.

  According to the invention described in claim 4, since the separator cover is formed of resin, it can be manufactured integrally by injection molding. Therefore, manufacture is simple and inexpensive.

  According to the invention described in claim 5, since the installation of the separator cover is completed simply by pushing the mounting portion of the separator cover into the cylindrical portion installed on the fixed scroll, the assembly is easy and the number of assembly steps is reduced. The

  According to the sixth aspect of the present invention, since the installation of the separator cover is completed simply by adjusting the position and pushing the attachment portion of the separator cover, assembly is easy and the number of assembly steps is reduced.

Embodiments according to the present invention will be described below with reference to the drawings.
[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
FIG. 3 is a longitudinal sectional view showing the entire structure of the scroll compressor 1 used in the refrigerant compressor of the air conditioner to which the present invention is applied.
The scroll compressor 1 includes a bottomed cylindrical housing 2 that extends vertically, a scroll-type compression mechanism 4 supported by an upper bearing 3 at the top inside the housing 2, and a lower part of the scroll-type compression mechanism 4, that is, A motor 5 of driving means disposed in a lower portion inside the housing 2 is supported by an upper bearing 3 or the like. A driving shaft 6 of the motor 5 is connected to a lower portion of the scroll type compression mechanism 4.
In the figure, reference numeral 7 denotes a suction pipe connected to the housing 2 in the closed space, and 8 denotes a discharge pipe.

  The scroll-type compression mechanism 4 includes a fixed scroll 9 fixed to the upper bearing 3, a turning scroll 10 supported between the upper bearing 3 and the fixed scroll 9 through a thrust bearing so as to be capable of a revolving turning motion, A well-known Oldham link mechanism 11 is provided on the outer surface of the scroll 10 and prevents the rotation of the orbiting scroll 10 while allowing its orbiting revolution.

  The fixed scroll 9 is formed on a fixed side end plate 9a, a spiral fixed side spiral body 9b erected downward on the inner surface of the fixed side end plate 9a, and a peripheral portion of the fixed side end plate 9a. And a cylindrical peripheral wall portion 9c. The fixed side end plate 9a has a discharge passage 12 formed in a vertically penetrating state at the center thereof, and a separator cover 13 is disposed on the upper surface thereof. Inside the separator cover 13, a discharge valve 14 that opens and closes the discharge port of the discharge passage 12 and a discharge valve retainer 15 that restricts the movement of the discharge valve 14 are provided.

A suction port provided at the lower end of the suction pipe 7 is connected to a suction chamber 16 formed between the fixed scroll 9 and the orbiting scroll 10. A suction flow path is formed.

  The orbiting scroll 10 is erected upward on the inner surface of the orbiting side end plate 10a and the orbiting side end plate 10a disposed in opposition to the fixed side end plate 9a, and meshed with the fixed side spiral body 9b. And a swirl-side spiral body (scroll) 10b. A tip seal is fitted to the tip surface of the swirl side spiral body 10b. A cylindrical boss 17 is erected on the lower surface of the turning side end plate 10a with the same axis. A bush 18 is rotatably fitted inside the boss 17 via a swivel bearing 19. Further, the bush 18 is formed with a through hole 18a that is eccentric from the axis.

  The fixed scroll 9 and the orbiting scroll 10 are 180 degrees out of phase so that the side surfaces of the fixed-side spiral body 9b and the orbiting-side spiral body 10b are in line contact with each other at a plurality of locations in a state where they are eccentric from each other by a predetermined distance. Are engaged with each other. Further, in this state, the fixed side spiral body 9b and the tip seal of the turning side spiral body 10b are shown in close contact with the inner surfaces of the rotating side end plate 10a and the fixed side end plate 9a, respectively. Compression chambers P serving as sealed spaces are formed at a plurality of points that are point-symmetric with respect to the centers of 9b and the swirl side spiral body 10b. The orbiting scroll 10 is arranged to be capable of revolving orbiting in a state where rotation is prevented with respect to the upper bearing 3 and the fixed scroll 9 fixed to the upper bearing 3 by a well-known Oldham link mechanism 11. .

A back pressure chamber 30 is provided around the boss 17 between the orbiting scroll 10 and the upper bearing 3. The back pressure chamber 30 is maintained at a high pressure equivalent to the gas regulated and discharged by the seal ring 24 during the operation of the scroll compressor 1. The orbiting scroll 10 is pressed in the direction of the fixed scroll 9 by this high pressure.
A balance weight 25 that rotates integrally is fitted on the outer periphery of the bush 18.

The drive shaft 6 of the motor 5 is pivotally supported by an upper bearing 3 and a lower bearing 23 located below the motor 5, and an eccentric pin 20 that is eccentric by a predetermined amount from the axis is provided in a protruding state at the upper end. The eccentric pin 20 is inserted into the through hole 18a of the bush 18 and supports the bush 18 so as to be rotatable.

  The eccentric pin 20 and the drive shaft 6 are formed with an oil passage 21 penetrating them vertically, and a lubricating oil pump mechanism is provided at the lower end of the drive shaft 6. A lubricating oil 22 is stored at the bottom of the housing 2, and a lubricating oil pump mechanism at the lower end of the drive shaft 6 is arranged in the lubricating oil 22.

1 and 2 show a configuration around the separator cover 13 of the scroll compressor according to the present embodiment.
The separator cover 13 has a flat cylindrical shape with an open bottom. On the end side surface of the open side, six mounting portions 41 having bolt holes extending in the horizontal direction are provided at equal intervals in the circumferential direction. The separator cover 13 is attached to the fixed scroll 9 by fixing the mounting portion 41 to the fixed scroll 9 with bolts. The number of attachment portions 41 may be an appropriate number as long as it is attached to the fixed scroll 9 with a required strength.
The separator cover 13 is made of sheet metal.

The ejection pipe 31 has a shape obtained by bending a cylindrical pipe into an L shape. One end of the ejection pipe 31 penetrates and is attached to the central portion in the height direction of the side surface of the separator cover 13. The other end of the ejection pipe 31 is provided with a discharge port 32 that opens in the ejection direction so that the refrigerant gas is ejected horizontally with respect to the end surface of the fixed scroll 9 in the tangential direction of the inner peripheral surface of the housing 2. It has been. The jet pipe 31 and the discharge port 32 constitute a discharge portion of the separator cover 13 in the present embodiment.
Two ejection pipes 31 are provided, and are provided at positions facing each other across the center of the separator cover 13. An imaginary line connecting the ejection pipes 31 and 31 is provided orthogonal to the longitudinal direction of the discharge valve 14.

At the center of the upper surface of the separator cover 13, a substantially cylindrical recess 33 that is recessed inward is provided. The inner end of the separator cover 13 of the recess 33 has a function of regulating the upward movement of the discharge valve 14.
Disposed in the recess 33 is a discharge pipe 8 fixed to the housing 2 and having an internal opening end 81 at the lower end.

The operation of the scroll compressor 1 according to the present embodiment described above will be described.
When the drive shaft 6 is rotated by the motor 5, the orbiting scroll 10 performs a revolving orbiting motion while being prevented from rotating by the Oldham link mechanism 11. When the refrigerant gas is introduced into the suction chamber 16 from the suction pipe 7, the compression chamber P formed by the fixed-side spiral body 9b and the swirl-side spiral body 10b is sequentially moved, whereby the refrigerant gas is compressed.

The compressed high-pressure refrigerant gas is intermittently discharged through the discharge passage 12. The refrigerant gas opens the discharge valve 14 and flows into the separator cover 13. At this time, the inner end of the separator cover 13 of the recess 33 restricts the movement of the discharge valve 14.
The refrigerant gas is ejected horizontally in the tangential direction from the discharge port 32 of the ejection pipe 31 into the housing 2. Since the two discharge ports 32 are ejected around the separator cover 13 in the same direction, a swirling flow is generated in the housing 2.

Centrifugal force is generated by the swirling flow, and oil component in the refrigerant gas is separated by the centrifugal force, and collides with the inner periphery of the housing 2 to be separated.
Since the ejection pipe 31 is provided on the side portion of the separator cover 13 and is ejected in the horizontal direction, this swirling flow effectively uses the space corresponding to the side surface of the separator cover 13. . Accordingly, since a large space for the swirling flow is not required in the upper portion of the separator cover 13, the height in the vertical direction can be omitted correspondingly, and the scroll compressor can be miniaturized.

  In this way, the refrigerant gas from which the oil component has been separated is sent to the heat exchanger from the inner opening end 81 of the discharge pipe 8 provided in the central portion where the centrifugal force is weak and the gas component is large. The oil content contained in is reduced. Thereby, the exchange efficiency of a heat exchanger improves. In addition, the stability of the device is improved.

Hereinafter, the operation and effect of the scroll compressor according to the present embodiment will be described.
As described above, since the high-pressure gas is discharged horizontally from the side of the separator cover 13 into the housing 2, the space corresponding to the side of the separator cover 13 in the housing 2 can also be effectively used for lubricating oil separation. Therefore, since the height of the upper space of the separator cover 13 can be reduced, the scroll compressor 1 can be downsized accordingly.
Further, if the height of the upper space of the separator cover 13 can be reduced, the area where the suction pipe 7 contacts the refrigerant gas is reduced. Thereby, since the temperature rise of suction | inhalation gas can be reduced, the compression efficiency of the scroll compressor 1 improves.

  Further, since the inner opening end portion 81 of the discharge pipe 8 is disposed in the concave portion 33 provided in the upper center portion of the separator cover 13, the refrigerant gas discharged from the side portion of the separator cover 13 is in the middle of the turning. There is no flow into the discharge pipe 8. Therefore, since the refrigerant gas surely swirls in the housing 2 and separates the lubricating oil and then flows into the discharge pipe 8, the content of the lubricating oil contained in the refrigerant gas discharged from the scroll compressor 1 is descend.

  Furthermore, since the lower end part of the recessed part 33 is regulating the discharge valve 12, a discharge valve retainer becomes unnecessary. Therefore, the manufacturing cost is low.

In the present embodiment, two ejection pipes 31 are provided, but the present invention is not limited to this. As long as the refrigerant gas in the housing 2 has a diameter that can achieve a predetermined flow velocity, it may be one or three or more.
A desirable embodiment in the case of one jet pipe 31 will be described with reference to FIG. When the number of the ejection pipes 31 is one, the refrigerant gas from the ejection passage 12 is ejected in the longitudinal direction of the ejection valve 14, and therefore it is effective to attach the ejection pipe 31 so as to be positioned on the extension line in this direction. It is.

[Second Embodiment]
Next, 2nd embodiment of this invention is described using FIGS.
In this embodiment, the separator cover 13 is formed of a resin excellent in heat resistance, mechanical strength, and chemical resistance, such as polyphenylene sulfide (PPS) and polyamideimide (PAI).
The separator cover 13 has a substantially circular shape with a part cut away in plan view. The lower part of the separator cover 13 is opened. Three mounting portions 45 having bolt holes extending in the horizontal direction are integrally provided on the end side surface of the open side in the circumferential direction. The separator cover 13 is attached to the fixed scroll 9 by fixing the mounting portion 45 to the fixed scroll 9 with bolts. Since the attachment part 45 should just be attached to the fixed scroll 9 with required intensity | strength, what is necessary is just an appropriate number.

  On the outer periphery of the separator cover 13, jet passages 36 protruding in two places are provided. The ejection passages 36 and 36 are provided at a distance of about one third of the circumference. A discharge port 35 is provided at the outer end of the ejection passage 36. The discharge port 35 is provided so as to eject the refrigerant gas horizontally in the tangential direction. The ejection passage 36 and the discharge port 35 constitute a discharge portion of the separator cover 13 in the present embodiment.

The notch 37 of the separator cover 13 provides a space for attaching the suction pipe 7. In the present embodiment, since it is made of resin, it can be integrally processed by an injection molding machine, and the shape has a considerable degree of freedom. Therefore, processing is easy and the manufacturing cost is low.
In the present embodiment, the concave portion provided in the upper central portion of the separator cover 13 in the first embodiment is not provided.

The operation of the scroll compressor 1 according to the present embodiment described above will be described.
When the drive shaft 6 is rotated by the motor 5, the orbiting scroll 10 performs a revolving orbiting motion while being prevented from rotating by the Oldham link mechanism 11. When the refrigerant gas is introduced into the suction chamber 16 from the suction pipe 7, the compression chamber P formed by the fixed-side spiral body 9b and the swirl-side spiral body 10b is sequentially moved, whereby the refrigerant gas is compressed.

The compressed high-pressure refrigerant gas is intermittently discharged through the discharge passage 12. The refrigerant gas opens the discharge valve 14 and flows into the separator cover 13.
The refrigerant gas is ejected horizontally in the tangential direction from the discharge port 35 of the ejection passage 36 toward the housing 2. Since the two discharge ports 35 are ejected around the separator cover 13 in the same direction, a swirling flow is generated in the housing 2.

Centrifugal force is generated by the swirling flow, and oil component in the refrigerant gas is separated by the centrifugal force, and collides with the inner periphery of the housing 2 to be separated.
Since the ejection passage 36 is provided at the side portion of the separator cover 13 and is ejected in the horizontal direction, the swirling flow effectively uses the space corresponding to the side portion of the separator cover 13. Become. Accordingly, a large space for the swirling flow is not required in the upper part of the separator cover 13, and accordingly the height in the vertical direction can be omitted, and the scroll compressor 1 can be downsized.

  In this way, the refrigerant gas in the vicinity of the shaft center from which the oil component has been separated at the outer peripheral portion is sent to the heat exchanger from the discharge pipe 8 provided in the central portion, so that the oil content contained in the refrigerant gas is Reduced. Thereby, the efficiency of the heat exchanger is improved as compared with when the separator cover is not used.

Hereinafter, the operation and effect of the scroll compressor according to the present embodiment will be described.
Since the high-pressure gas is discharged horizontally from the side of the separator cover 13 into the housing 2, the space corresponding to the side of the separator cover 13 in the housing 2 can be effectively utilized for lubricating oil separation. Therefore, since the height of the upper space of the separator cover 13 can be reduced, the size of the scroll compressor can be reduced accordingly.
Further, if the height of the upper space of the separator cover 13 can be reduced, the area where the suction pipe 7 contacts the high pressure gas is reduced. Thereby, since the temperature rise of suction | inhalation gas can be reduced, the compression efficiency of the scroll compressor 1 improves.

Thus, since the separator cover 13 is formed of resin, it can be manufactured integrally by injection molding. Therefore, manufacture is simple and inexpensive.
[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the scroll compressor 1 has the same basic configuration as that of the second embodiment, but the structure for attaching the separator cover 13 to the fixed scroll 9 is different. Hereinafter, this point will be described.

  The attachment portions 43 of the separator cover 13 in the present embodiment are provided at a plurality of locations, and a U-shaped recess 44 is provided at the tip. A bolt 46 is attached at a position where the attachment portion 43 on the upper surface of the fixed scroll 9 is disposed. The bolt 46 is provided with an unthreaded cylindrical portion 45 at an intermediate portion. The diameter of the cylindrical portion 45 is substantially the same as the width of the recess 44. The length of the cylindrical portion 45 is substantially the same as the thickness of the recess 44.

The separator cover 13 having the above configuration is attached as follows.
A bolt 46 is attached to a predetermined position of the fixed scroll 9 and fixed so that the cylindrical portion protrudes. Then, the recess 44 of the mounting portion 43 of the separator cover 13 is hooked on the cylindrical portion 45 of the bolt 46, and the recess 44 is engaged with the cylindrical portion using the elasticity of the resin. (See FIGS. 7 and 8) This completes the mounting.
When fastening with bolts as in the second embodiment, since the mounting portion is made of resin, it may be damaged if tightened strongly, so it is necessary to manage the tightening torque, but in this embodiment it is necessary Disappears.

The operation and effect of this embodiment will be described.
Cylindrical portions 45 are respectively installed at predetermined positions of the fixed scroll 9, and the separator cover 13 is fixed by inserting a U-shaped recess 44 into the cylindrical portion 45 using the elasticity of the resin in the cylindrical portion 45. It can be attached to the scroll 9. As described above, since the installation of the separator cover 13 is completed simply by pushing the mounting portion 43 of the separator cover 13 into the cylindrical portion 45 installed on the fixed scroll 9, assembly is easy and the number of assembly steps is reduced.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG.
In this embodiment, the scroll compressor 1 has the same basic configuration as that of the second embodiment, but the structure for attaching the separator cover 13 to the fixed scroll 9 is different. Hereinafter, this point will be described.

  The attachment portions 43 of the separator cover 13 in the present embodiment are provided at a plurality of locations, and are respectively extended below the side surfaces of the separator cover 13. A claw portion 47 having a barb at the tip of the mounting portion 43 is provided. A mounting hole 48 is dug in a position where the mounting portion 43 on the upper surface of the fixed scroll 9 is disposed. An engagement portion 49 that engages with the claw portion 47 of the attachment portion 43 is provided on the surface of the fixed scroll 9 of the attachment hole 48.

The separator cover 13 having the above configuration is attached as follows.
The claw portion 47 of the attachment portion 43 of the separator cover 13 is positioned in the opening portion of the attachment hole 48 provided in the fixed scroll 9 and is pushed in to engage the claw portion 47 and the engagement portion. This completes the installation.
When fastening with bolts as in the second embodiment, since the mounting portion is made of resin, it may be damaged if tightened strongly, so it is necessary to manage the tightening torque, but in this embodiment it is necessary Disappears.

The operation and effect of this embodiment will be described.
The separator cover 13 is attached to the fixed scroll 9 by inserting the claw portion 47 of the attachment portion 43 into the attachment hole 48 provided at a predetermined position of the fixed scroll 9 and engaging the engagement claw portion 47 and the engagement portion 49. Can do. As described above, since the installation of the separator cover 13 is completed simply by adjusting the position and pushing in the mounting portion 43 of the separator cover 9, the assembly is easy and the number of assembling steps is reduced.

It is a longitudinal cross-sectional view which shows the upper part of the scroll compressor of 1st embodiment of this invention. FIG. 2 is a XX view of FIG. 1. It is sectional drawing which shows the scroll compressor of 1st embodiment of this invention. It is the cross-sectional view which crossed in the height direction upper position which shows another embodiment of the separator cover of 1st embodiment of this invention, and looked downward. It is a top view which shows the separator cover of 2nd embodiment of this invention. It is AA sectional drawing of FIG. It is a top view which shows the attaching part of the separator cover of 3rd embodiment of this invention. It is front sectional drawing of FIG. It is sectional drawing which shows the attaching part of the separator cover of 4th embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scroll compressor 2 Housing 7 Intake pipe 8 Discharge pipe 9 Fixed scroll 10 Orbiting scroll 13 Separator cover 32 Discharge port 33 Concave 35 Discharge port 43 Mounting part 44 Recess 45 Cylindrical part 47 Claw part 48 Mounting hole 49 Engagement part 81 Inside Open end

Claims (6)

A housing with a suction pipe and a discharge pipe connected to the top;
A fixed scroll fixedly supported in the housing;
An orbiting scroll meshed with the fixed scroll and prevented from rotating with respect to the fixed scroll to perform a revolving orbiting motion;
In the scroll compressor provided with an upper part of the fixed scroll, and a separator cover that discharges high-pressure gas as a swirling flow into the upper space of the housing,
A scroll compressor characterized in that a discharge portion of the separator cover is provided on a side portion of the separator cover. The scroll compressor according to claim 1, wherein a concave portion recessed inward is formed in an upper central portion of the separator cover, and an inner opening end portion of the discharge pipe is disposed in the concave portion. The scroll compressor according to claim 2, wherein a lower end portion of the concave portion regulates a discharge valve provided in a discharge portion of the compression portion. The scroll compressor according to any one of claims 1 to 3, wherein the separator cover is made of resin. A plurality of mounting portions provided around the separator cover are each provided with a U-shaped recess at the tip, and a cylindrical portion corresponding to the recess is installed in the fixed scroll. The scroll compressor according to claim 4. A plurality of mounting portions provided around the separator cover are provided so as to extend below the side portions of the separator cover, and a claw portion is formed at a tip portion, and the mounting portion of the fixed scroll is provided on the mounting portion. The scroll compressor according to claim 4, wherein a mounting hole having an engaging portion that engages with the claw portion is provided at a corresponding position.

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