KR100741684B1 - A scroll compressor having rotation prevention mechanism - Google Patents

Abstract

A scroll compressor with a rotation prevention mechanism is provided to prevent rotation by an assembly between an assembling pin and an assembling groove between a fixing scroll and a rotation scroll. A scroll compressor with a rotation prevention mechanism includes a housing, an operation unit, an intake unit, a scroll compress unit, and a discharge unit. A rotation prevention device is formed in the scroll compress unit. The rotation prevention device includes a guide ring(100), a plurality of assembling pins(900), and an assembling groove. The guide ring is installed at an intake side of a fixing scroll(500) along a perimeter of the fixing scroll. The assembling pins are projected to inside and installed along a perimeter of the guide ring. The assembling grooves are installed along a perimeter of the rotation scroll(400) for inserting an end of the assembling pin.

Description

Scroll compressor with anti-rotation mechanism {A SCROLL COMPRESSOR HAVING ROTATION PREVENTION MECHANISM}

1 is a longitudinal cross-sectional view showing an example of a scroll compressor having a conventional anti-rotation mechanism.

FIG. 2 is a plan view illustrating a process of compressing a refrigerant in the scroll compressor of FIG. 1.

3 is a perspective view illustrating the rotation prevention mechanism in FIG. 1.

FIG. 4 is a perspective view showing the structure of the old dam ring in FIG. 3 in detail. FIG.

5 is a longitudinal sectional view showing a scroll compressor configuration having a rotation preventing mechanism according to the present invention.

FIG. 6A is a perspective view of Embodiment 1 of the anti-rotation mechanism in FIG. 5. FIG.

FIG. 6B is a plan view of FIG. 6A.

6C is an exploded perspective view of FIG. 6A.

FIG. 6D is a rear view of the swing scroll in FIG. 6C.

FIG. 7A is a perspective view of Embodiment 2 of the anti-rotation mechanism in FIG. 5. FIG.

FIG. 7B is a plan view of FIG. 7A.

FIG. 7C is an exploded perspective view of FIG. 7A. FIG.

FIG. 7D is a rear view of the swing scroll in FIG. 7C.

FIG. 8A is a perspective view of Embodiment 3 of the anti-rotation mechanism in FIG. 5. FIG.

FIG. 8B is a plan view of FIG. 8A.

8C is an exploded perspective view of FIG. 8A.

FIG. 9A is a perspective view showing a fourth embodiment of the anti-rotation mechanism in FIG. 5. FIG.

FIG. 9B is a plan view of FIG. 9A.

9C is an exploded perspective view of FIG. 9A.

10 is a perspective view showing a fifth embodiment of the anti-rotation mechanism in FIG.

※ Explanation of Major Drawings

100 ... guide ring

400 ... Turning Scroll

410 ... Spiral wrap of turning scroll

450 ... Alignment groove on a turning scroll

500 ... fixed scroll

510 ... Spiral wrap of fixed scroll

800 ... housing (frame)

900 ... Dowel Pins

The present invention relates to a scroll compressor having a rotation prevention mechanism, and more particularly, to a scroll compressor having a rotation prevention mechanism having less wear, less vibration and noise, and excellent assembly and lubrication by providing a smooth lubricant supply to the rotation prevention mechanism. It is about.

BACKGROUND OF THE INVENTION A scroll compressor is a device that performs compression through the relative motion of a fixed scroll composed of a spiral scroll wrap and fixed regardless of the rotation of the drive shaft, and a turning scroll that rotates in accordance with the rotation of the drive shaft. have.

In order to maintain a predetermined compression efficiency, during the orbiting of the swinging scroll, rotation needs to be prevented within an error range, so that the rotation prevention mechanism itself is generally included.

Korean Laid-Open Patent Publication No. 10-2005-0028214 discloses a configuration related to a scroll compressor having a rotation preventing mechanism, which will be described below with reference to FIGS. 1 to 4.

As shown in the drawing, a conventional scroll compressor includes a housing, a driving unit for generating rotational force, a suction unit through which fluid is sucked from the outside, a scroll compressor for compressing fluid sucked from the suction unit, and the scroll compression unit. It is roughly divided into the configuration including the discharge portion for discharging the high pressure fluid compressed by the.

First, the drive unit includes a stator 21 and a drive motor formed of a rotor 22 positioned inside the stator 21, and a drive shaft 20 that is rotated by being inserted over the center of the drive motor.

In addition, the suction part includes a suction pipe 70 formed on one side of the compressor outer circumferential surface, and a suction chamber 71 in communication with the suction pipe 70 and accumulating the introduced refrigerant.

In addition, the scroll compression unit surrounds the outer circumferential surface of the drive shaft 20, a key groove is formed on one side of the upper surface, the upper frame 80, the thrust surface is formed in the central portion, and the key groove formed in the upper frame 80 And a key portion formed thereon, the Oldham ring 30 which performs a linear reciprocating motion on the upper frame 80, and is coupled by a key on the upper side of the Oldham ring 30, and has a spiral scroll wrap. A swing scroll 40 having 41 is formed, and a fixed scroll 50 positioned above the swing scroll 40 and fixed to the upper diaphragm and the outer cell of the compressor.

In addition, the discharge portion is formed in the central portion of the fixed scroll 50, the discharge port 60 for discharging the compressed refrigerant, and the discharge chamber 61 in communication with the discharge port 60, the uppermost of the compressor is formed And a discharge tube 62 formed on one side of the discharge chamber 61. In addition, the orbiting scroll 40 and the fixed scroll 50 of the scroll compression unit are formed with spiral scroll wraps 41 and 51, and the interaction between the orbiting scroll wrap 41 and the fixed scroll wrap 51 is achieved. The refrigerant is thereby compressed.

In particular, the old dam ring 30 is interposed between the swinging scroll 40 and the upper frame 80 to interlock to induce the swinging movement of the swinging scroll 40.

Meanwhile, in the discharge unit, the discharge port 60 is fixed to the discharge port 60 between the discharge port 60 and the discharge chamber 61 to prevent the reverse flow of the refrigerant discharged through the discharge port 60. The check valve 63 and the check valve housing 64 may be formed.

With reference to the above-described configuration, the operation of the conventional scroll compressor will be described.

First, when a drive motor composed of the stator 21 and the rotor 22 is operated, the drive shaft 20 coupled with the rotor 22 of the drive motor rotates. As the drive shaft 20 rotates, the refrigerant is sucked through the suction pipe, and the refrigerant in the low pressure state introduced into the compressor through the suction pipe 70 passes into the suction chamber 71 in communication with the suction pipe 70. After entering, it enters the scroll compressor.

The refrigerant introduced into the scroll compression unit is compressed to high pressure by the swinging movement of the swing scroll 40, and the compressed refrigerant is collected at the center of the scroll. The collected high pressure refrigerant is discharged to the discharge chamber 61 through the discharge port 60. At this time, the check valve 63 and the check valve housing 64 are formed so that the high-pressure refrigerant entering the discharge chamber does not flow back to the scroll compression unit, thereby preventing the back flow.

Finally, the refrigerant accumulated in the discharge chamber 61 is discharged to the outside of the compressor through the discharge tube 62.

2 illustrates a process of compressing a refrigerant in a scroll compression unit according to the spirit of the present invention.

First, as the driving shaft 20 rotates, the turning scroll 40 is eccentric about the driving shaft 20 to rotate (or idle). Then, as the orbiting scroll 40 is pivoted by the rotation of the drive shaft 20 with respect to the fixed scroll 50, pockets 99 are formed in which the respective wrap 41 and 51 are in surface contact with each other to compress the refrigerant. do.

In addition, the formed pocket 99 is reduced in volume as it returns to the center of the scroll wrap, and a high pressure is formed as the volume is reduced, and the formed high-pressure fluid is discharged through the discharge port 60 in the center of the scroll member. Move to chamber 61.

However, as in the conventional scroll compressor, when the Oldham ring is used, there is always a concern about wear because friction between the key and the groove is inevitable.

In addition, as the wear progresses, there is a problem that the compression efficiency of the refrigerant gradually decreases, and vibration and noise become severe.

The present invention has been made to solve the above-mentioned problems, the object of the invention is to provide a smooth lubricant supply to the anti-rotation mechanism is made of a scroll compressor having a rotation prevention mechanism with less wear, less vibration and noise, excellent assembly and lubricity To provide.

In order to achieve the above object, the scroll compressor having a rotation preventing mechanism according to the present invention,

A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. Compression section; A scroll compressor comprising a discharge part for discharging high pressure fluid compressed by the scroll compression part,

Around the fixed scroll is provided with a guide ring on the suction side,

A plurality of dowel pins are installed to protrude inward around the guide ring,

The circumference of the pivoting scroll is characterized in that the alignment groove is formed to accommodate the end of the alignment pin.

In addition, the scroll compressor having a rotation preventing mechanism according to the present invention,

A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; A scroll compressor comprising a discharge part for discharging high pressure fluid compressed by the scroll compression part,

Around the fixed scroll is provided with a guide ring on the suction side,

A plurality of dowel pins are installed to protrude outward from the periphery of the turning scroll,

The circumference of the guide ring is characterized in that the alignment groove is formed to accommodate the end of the alignment pin.

Here, the fixed scroll and the guide ring may be integrally formed.

And, when viewed in the axial direction, the fitting groove is preferably formed in an arc shape.

In addition, the dowel pin and dowel groove is preferably disposed on the fluid suction passage.

In addition, the fitting groove is preferably formed on the suction side edge portion.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 5 shows a configuration example of a scroll compressor having a rotation preventing mechanism according to the present invention.

As shown, the scroll compressor according to the present invention includes a housing (or frame) 800, a drive unit for generating rotational force, an intake unit through which fluid is sucked from the outside, and a fluid sucked from the suction unit is compressed. A scroll compression unit and a discharge unit through which the high pressure fluid compressed by the scroll compression unit is discharged are included.

First, the drive unit is a drive motor 230 formed of a stator 210 and a rotor 220 positioned inside the stator 210, and a drive shaft 200 that is inserted and rotated on the center of the drive motor 230. ) Is included.

In addition, a main bearing 240 and a sub bearing 250 are installed on the drive shaft 200 driven by the drive motor 230, and the sub bearing 250 is eccentric with respect to the drive shaft 200. Supports the circumference of the installed eccentric action unit 260.

In addition, the scroll compression unit is fixed to the housing 800 and the scroll wrap 510 is formed, the fixed scroll 500 and the fixed scroll 500, which is coupled to the spiral scroll wrap 410 is also It is comprised by the turning scroll 400 formed.

The eccentric action portion 260 installed on the drive shaft 200 is connected to the swinging scroll 400 via the sub bearing 250.

Accordingly, as the drive shaft 200 rotates, the eccentric action portion 260 rotates eccentrically with respect to the drive shaft 200, and eventually, the orbiting scroll (25) installed on the eccentric action portion 260 via the sub bearing 250. 400 is pivoted relative to the fixed scroll 500.

As described above, pockets are formed between the scroll wraps 410 and 510 according to the turning motion of the turning scroll 400, and the refrigerant is compressed while the volume thereof is continuously changed.

On the other hand, the suction unit includes a suction tube (not shown) formed on one side of the compressor outer circumferential surface, and a suction chamber 710 communicating with the suction tube and accumulating the introduced refrigerant.

In addition, the discharge portion discharge port 600 is formed in the center of the fixed scroll 500 to discharge the compressed refrigerant, and the discharge chamber 610 in communication with the discharge port 600 and formed at the end of the compressor Consists of.

A check valve 630 is also provided to prevent backflow of the refrigerant discharged through the discharge port 600.

A thrust plate 870 supporting the pivoting movement of the pivoting scroll 400 is interposed between the pivoting scroll 400 and the support of the housing 800.

The anti-rotation mechanism according to the present invention is formed between the pivoting scroll 400 and the fixed scroll 500, and will be described in more detail in the following embodiments. In various embodiments, like reference numerals designate like elements, and redundant descriptions will be omitted.

Example  One

As shown in FIGS. 6A to 6D, the spiral scroll wrap 510 is formed on the fixed scroll 500, and the spiral scroll wrap 410 is also formed on the orbiting scroll 400 coupled to the fixed scroll 500. Is formed, and the anti-rotation mechanism is formed in the scroll compression unit that has a function of compressing the sucked fluid (refrigerant) as the swinging scroll 400 rotates.

Specifically, in the anti-rotation mechanism according to the present embodiment, first, the guide ring 100 is installed along the periphery of the suction side of the fixed scroll 500, and a plurality of dowel pins are formed around the guide ring 100. 900 is installed to protrude inward, the circumference of the swinging scroll 400 is configured to have a fitting groove 450 is accommodated for the end of the alignment pin 900 is formed.

In addition, as shown, the alignment groove 450 is preferably formed in the suction corner of the swinging scroll 400 may be formed consistently along the axial direction.

Accordingly, when the pivoting scroll 400 rotates with respect to the fixed scroll 500 by the eccentric action unit 260 as the driving shaft 200 rotates, the dowel pin 900 and the alignment groove ( 450) is prevented from engaging and rotating with each other.

The dowel pins 900 and the dowel grooves 450 are preferably formed at equal intervals along the circumferential direction for uniform distribution of load during operation.

In addition, when viewed from the axial direction, the fitting groove 450 is preferably formed in an arc shape for the smooth operation of the operation. Of course, other forms other than arcs are possible but are less effective than arcs.

In order to increase wear resistance, the alignment groove 450 may include a surface treatment part such as a Ni plating layer or anodizing.

Next, the assembly configuration of the anti-rotation mechanism will be briefly described.

First, the dowel pin 900 is firmly fixed by pressing into a hole formed in the circumferential side of the guide ring 100.

Next, the alignment pins 900 and the alignment grooves 450 are aligned with each other in the state of turning the scroll scroll 400 to the fixed scroll 500, and the guide ring 100 is fixed to the fixed scroll 500.

Then, the fixed scroll 500 and the guide ring 100 are firmly fixed to the housing 800 by a lock pin L or the like.

As described above, since the portion having the anti-rotation structure is the circumferential portion of the scroll having the suction port of the refrigerant, the lubricating oil can be easily supplied.

Example  2

7A to 7D show a rotating prevention mechanism according to the present embodiment.

As shown, the anti-rotation mechanism according to the present embodiment, first, the guide ring 100 is installed along the circumference of the suction side of the fixed scroll 500, a plurality of circumference of the swinging scroll 400 The dowel pin 900 is installed to protrude outward, and an inner circumference of the guide ring 100 is provided with a dome groove 150 for receiving an end of the dowel pin 900.

Here, the alignment groove 150 of the guide ring 100 is formed consistently along the drive shaft direction.

Accordingly, as shown in FIG. 5, when the turning scroll 400 rotates with respect to the fixed scroll 500 by the eccentric action unit 260 as the driving shaft 200 rotates, the alignment is performed. The pin 900 and the alignment groove 150 are prevented from rotating by catching each other.

The dowel pins 900 and the dowel grooves 150 are preferably formed at equal intervals along the circumferential direction for uniform distribution of the load during operation.

In addition, when viewed in the axial direction, the fitting groove 150 of the guide ring 100 is preferably formed in an arc shape for the smooth operation of the operation. Of course, other forms other than arcs are possible but are less effective than arcs.

Next, the assembly configuration of the anti-rotation mechanism will be briefly described.

First, the dowel pin 900 is firmly fixed to the hole formed in the circumferential side of the swing scroll 400.

Next, the fixed scroll 500 is firmly fixed to the housing 800 by a lock pin L or the like.

Then, the alignment pins 900 and the alignment grooves 450 are aligned with each other in a state where the swing scroll 400 is aligned with the fixed scroll 500.

As described above, since the portion having the anti-rotation structure is the circumferential portion of the scroll on the suction passage of the refrigerant, the lubricating oil can be easily supplied.

Example  3

8A to 8C illustrate a specific configuration according to the present embodiment, and the detailed description thereof will be omitted since it is the same as the first embodiment except that the guide ring 100 and the fixed scroll 500 are integrally formed.

Example  4

9A to 9C, the detailed configuration according to the present embodiment is illustrated, and the detailed description is omitted since it is the same as the second embodiment except that the guide ring 100 and the fixed scroll 500 are integrally formed.

Example  5

A specific configuration according to the present embodiment is shown in FIG. 10. Since the dowel pin 900 is inclined about 30 ° without protruding radially outward, the detailed description is omitted.

In this case, in order to press-fit the dowel pin 900, the mounting bracket 480 may be installed on the outer circumferential surface of the turning scroll 400.

According to the present invention having the configuration as described above, since the rotation is prevented by the combination of the alignment pin and the alignment groove between the fixed scroll and the swinging scroll, the lubrication is sufficiently made by the suction gas, the noise due to wear compared to the conventional There is an advantage that the vibration and vibration are significantly reduced.

In addition, according to the present invention it is possible to avoid a decrease in the compression efficiency due to wear.

Further, according to the present invention, it is excellent in assemblability because the alignment pin is formed on the circumferential portion of the guide ring or the revolving scroll and fits into the alignment groove.

Further, according to the present invention, since the anti-rotation mechanism is formed around the swing scroll located on the suction passage, the lubricity is excellent.

Claims (8)

A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude inward around the guide ring, A circumference of the pivoting scroll is provided with a fitting groove for receiving the end of the alignment pin, the alignment pin and the alignment groove is a scroll compressor having a rotation preventing mechanism, characterized in that disposed on the fluid suction passage. A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude inward around the guide ring, A circumference of the revolving scroll is formed with a fitting groove for receiving the end of the alignment pin, the alignment groove is a scroll compressor having a rotation preventing mechanism, characterized in that formed in the corner of the suction side. A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude inward around the guide ring, A circumference of the pivoting scroll is provided with a fitting groove for receiving the end of the alignment pin, the alignment groove is a scroll compressor having a rotation preventing mechanism, characterized in that the surface treatment of the Ni plating layer or anodizing is formed. A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude outward from the periphery of the turning scroll, A circumference of the guide ring is provided with a fitting groove for receiving the end of the alignment pin, the alignment pin and the alignment groove is a scroll compressor having a rotation preventing mechanism, characterized in that disposed on the fluid suction passage. A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude outward from the periphery of the turning scroll, A periphery of the guide ring is formed with a fitting groove for receiving the end of the alignment pin, the fitting groove is a scroll compressor having a rotation preventing mechanism, characterized in that formed on the suction corner. A housing; A driving unit for generating rotational force; A suction part through which fluid is sucked from the outside; A scroll consisting of a fixed scroll composed of a spiral scroll wrap for compressing the fluid sucked from the suction part and fixed regardless of the rotation of the drive shaft, and a rotating scroll that rotates according to the rotation of the drive shaft and forms a spiral scroll wrap. A compression unit; In the scroll compressor composed of a discharge unit for discharging the high-pressure fluid compressed by the scroll compression unit, Around the fixed scroll is provided with a guide ring on the suction side, A plurality of dowel pins are installed to protrude outward from the periphery of the turning scroll, A periphery of the guide ring is formed with a fitting groove for receiving the end of the alignment pin, the fitting groove is a scroll compressor having a rotation preventing mechanism, characterized in that the surface treatment of the Ni plating layer or anodizing is formed. delete delete

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