KR20220017765A - Scroll compressor - Google Patents

Abstract

One embodiment of the present invention provides a scroll compressor, comprising: a housing; a motor provided in the housing; a rotating shaft rotated by the motor; an orbiting scroll in association with the rotating shaft and pivoting motion; a fixed scroll forming a compression chamber (C) together with the orbiting scroll; a discharge reed valve coupled to one surface of the fixed scroll to open and close one or more discharge ports of the fixed scroll through which a refrigerant compressed in the compression chamber is discharged; and a retainer coupled to the discharge reed valve to limit the degree of opening of the discharge reed valve, wherein at least a portion of the surface of the retainer facing the discharge reed valve is characterized in that a buffer member is provided, thereby capable of reducing the retainer hitting noise of the discharge reed valve.

Description

Scroll Compressor {SCROLL COMPRESSOR}

The present invention relates to a scroll compressor, and more particularly, to a scroll compressor capable of reducing a retainer hitting noise of a discharge reed valve.

In general, an air conditioning device (Air Conditioning; A/C) for heating and cooling an interior is installed in a vehicle. Such an air conditioner includes a compressor that compresses a low-temperature, low-pressure gaseous refrigerant introduced from an evaporator into a high-temperature and high-pressure gaseous refrigerant and sends it to a condenser as a configuration of a cooling system.

There are two types of compressors: a reciprocating type for compressing a refrigerant according to a reciprocating motion of a piston, and a rotary type for performing compression while rotating. The reciprocating type includes a crank type that transmits to a plurality of pistons using a crank depending on the transmission method of the drive source, and a swash plate type that transmits to a shaft with a swash plate installed. There is a scroll type using orbiting scroll and fixed scroll.

Scroll compressors are widely used for refrigerant compression in air conditioners, etc. because they can obtain a relatively high compression ratio compared to other types of compressors and achieve stable torque by smoothly connecting refrigerant suction, compression, and discharge strokes.

Korean Patent Publication No. 1386483 discloses a conventional scroll compressor.

The scroll compressor includes a driving motor 20 that generates power in the inner space of the sealed casing 10 and a compression unit 30 that receives power from the driving motor 20 and compresses a refrigerant, which is a compressible fluid. are provided together. The compression part 30 has a fixed scroll 110 having a fixed wrap 111 formed thereon and fixed to the casing 10, and a turning wrap 121 to engage with the fixed wrap 111 is formed to perform a turning movement. It consists of orbiting scroll (120). The fixed wrap 111 and the orbiting wrap 121 have the same basic radius, and are formed in an involute curve shape from the start angle to the end angle, and are engaged with each other with a phase difference of 180°.

In the scroll compressor as described above, the fixed lap 111 of the fixed scroll and the orbiting lap 121 of the orbiting scroll are engaged with each other so that the orbiting scroll 120 orbits with respect to the fixed scroll 110, A compression chamber (P) is formed, and as the compression chamber (P) moves to the center during the orbiting motion of the orbiting scroll 120, the volume becomes narrow, and the refrigerant is continuously sucked, compressed, and discharged.

At this time, the discharge valve 140 that opens and closes the discharge port 113 of the fixed scroll 110 through which the refrigerant is discharged is made of a cantilever-shaped reed valve whose one end is fixed to the fixed scroll 110, and the discharge valve ( A retainer 141 for limiting the opening amount of the discharge valve 140 is installed on the compression rear side of the 140 .

Accordingly, when the refrigerant passes through the discharge valve 140 , the discharge valve 140 opens and hits the retainer 141 , and there is a problem in that operating noise in the range of 350-700 Hz is generated.

To this end, Japanese Patent Laid-Open No. 2002-048067 discloses a technique in which the lid 22 is coated with a thin layer 22a with polytetrafluoroethylene.

However, when polytetrafluoroethylene is coated on the lead 22 , since it affects the weight and thickness of the lead, there is a problem that the behavior and the opening degree of the lead may be affected. In addition, if the coating thickness is minimized to reduce the effect, there is a risk of wear due to continuous lead striking and harsh conditions of high temperature/high pressure, and if the coating is peeled off due to wear and flows into the cooling system, the performance may be adversely affected. have. Moreover, as a non-uniform coating layer is generated by wear, abnormal noise may occur during reed valve behavior and hitting.

Republic of Korea Patent Publication No. 1386483 (Registered on April 11, 2014) Japanese Laid-Open Patent Publication No. 2002-048067 (published on February 15, 2002)

An object of the present invention is to provide a scroll compressor capable of reducing a retainer hitting noise of a discharge reed valve.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. There will be.

In order to reduce the retainer hitting noise of the discharge reed valve, in the scroll compressor of the present invention, a buffer member is fitted to the retainer.

An embodiment of the present invention for solving the above problems is a housing; and a motor provided in the housing; a rotating shaft rotated by the motor; , a fixed scroll forming a compression chamber (C) together with the orbiting scroll; and a discharge reed valve coupled to one surface of the fixed scroll to open and close one or more discharge ports of the fixed scroll through which the refrigerant compressed in the compression chamber is discharged; and a retainer coupled to the discharge reed valve to limit the degree of opening of the discharge reed valve, wherein a buffer member is provided on at least a portion of a surface of the retainer facing the discharge reed valve, A scroll compressor is provided.

According to an embodiment of the present invention, a slot is formed on one surface of the retainer, a protrusion is formed on one surface of the cushioning member facing the retainer, and as the protrusion is inserted into the slot, the cushioning member is may be coupled to the retainer.

According to an embodiment of the present invention, the innermost side in the depth direction of the slot may be formed to be wider than the outermost side in the depth direction.

According to an embodiment of the present invention, the slot may include a first extension portion extending in the depth direction, and a pair of second extension portions extending from the first extension portion to both sides in the width direction from the first extension portion.

According to an embodiment of the present invention, the buffer member may be made of polytetrafluoroethylene (PTFE).

According to an embodiment of the present invention, the one or more outlets may include a main outlet formed on a central side of the fixed scroll; and a radially outer side of the fixed scroll with respect to the main outlet, the main outlet being It may include; first and second sub-discharging ports formed on opposite sides of each other as a reference.

According to an embodiment of the present invention, the discharge reed valve may include a valve coupling part coupled to the fixed scroll; and a main opening/closing part extending from the valve coupling part to open and close the main outlet; and from the valve coupling part. a first sub opening/closing unit extending and opening and closing the first sub discharge port; and a second sub opening/closing unit extending from the valve coupling unit to open and close the second sub discharge port.

According to an embodiment of the present invention, the retainer includes a retainer fastening part fastened to the discharge reed valve; and extending from the retainer fastening part to correspond to the main opening/closing part and inclined at a predetermined angle from one surface of the fixed scroll. a main retainer part formed of a; and a first sub retainer part extending from the retainer fastening part to correspond to the first sub opening/closing part and being inclined at a predetermined angle from one surface of the fixed scroll; and a second sub-retainer part extending from the retainer fastening part to correspond to the second sub-opening/closing part and formed to be inclined at a predetermined angle from one surface of the fixed scroll.

According to an embodiment of the present invention, the main retainer part may include a main head corresponding to the main outlet, and a main support part extending from the main head to the retainer fastening part.

According to an embodiment of the present invention, the buffer member may be coupled to the main retainer part.

According to an embodiment of the present invention, the sum of the thickness of the buffer member and the thickness of the main retainer part may be equal to the thickness of the retainer fastening part.

According to an embodiment of the present invention, the slot may extend long in the longitudinal direction of the main retainer part.

According to an embodiment of the present invention, a fixing groove is formed in the retainer fastening part to extend from the slot to correspond to a position of the slot, and the buffer member may be provided with a fixing protrusion inserted into the fixing groove.

According to an embodiment of the present invention, the buffer member may include a buffer head corresponding to the main head, and a buffer support corresponding to the main support.

According to the present invention, since the noise that the discharge reed valve hits the retainer when the refrigerant passes through the valve can be reduced by the buffer member, the operating noise can be reduced.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a cross-sectional view illustrating a scroll compressor according to an embodiment of the present invention;
2 is a rear view of the fixed scroll;
3 to 6 are cross-sectional views showing the fixed wrap and the pivot wrap when the rotation angle of the rotation shaft is the first, second, third and fourth angles, respectively;
7 is an exploded front perspective view of a retainer provided with a fixed scroll, a discharge reed valve, and a buffer member;
8 is a front view showing a state in which the parts of FIG. 7 are combined;
9 is a rear perspective view showing a retainer provided with a buffer member separated;
10 is a rear perspective view showing the retainer removed;
11 is a rear perspective view showing the buffer member separated;
12 is a rear perspective view showing a retainer according to another embodiment of the present invention separated;
13 is a rear perspective view showing the buffer member separated according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the scroll compressor of the present invention will be described with reference to the accompanying drawings.

In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or operator, and the following embodiments do not limit the scope of the present invention, but rather the scope of the present invention. It is merely exemplary of the elements presented in the claims.

In order to clearly explain the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification. Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

A scroll compressor according to an embodiment of the present invention will be described with reference to FIG. 1 .

A scroll compressor according to an embodiment of the present invention includes a housing 100 , a motor 200 provided in the housing 100 , a rotating shaft 300 rotated by the motor 200 , and the rotating shaft 300 . An orbiting scroll 400 that is interlocked and orbiting, a fixed scroll 500 forming a compression chamber C together with the orbiting scroll 400, and a compression chamber C coupled to one surface of the fixed scroll 500 A discharge reed valve 600 for opening and closing one or more discharge ports 512 of the fixed scroll through which the compressed refrigerant is discharged, and a retainer 700 coupled to the discharge reed valve 600 to limit the degree of opening of the discharge reed valve ) may be included.

Specifically, the housing 100 includes a center housing 110 through which the rotation shaft 300 passes, and a motor accommodation space S1 coupled to the front of the center housing 110 to accommodate the motor 200 . It may include a front housing 120 and a rear housing 130 disposed behind the center housing 110 to form a discharge chamber (D) for receiving the refrigerant discharged from the compression chamber (C). .

1 , the fixed scroll 500 is interposed between the center housing 110 and the rear housing 130 to be exposed to the outside, and the orbiting scroll 400 This fixed scroll 500 is accommodated.

However, the present invention is not limited thereto, and the rear housing 130 may be coupled to the rear of the center housing 110 to form a scroll receiving space in which the orbiting scroll 400 and the fixed scroll 500 are accommodated. Of course it could be.

A suction port (not shown) for guiding the refrigerant of suction pressure from the outside to the motor accommodation space S1 may be formed in the front housing 120 , and the motor accommodation space ( A suction passage (not shown) for guiding the refrigerant flowing into S1) to the compression chamber C may be formed. In addition, a discharge port (not shown) for guiding the refrigerant in the discharge chamber D to the outside of the housing 100 may be formed in the rear housing 130 .

The motor 200 may include a stator 210 fixed to the front housing 120 and a rotor 220 rotating inside the stator 210 by interaction with the stator 210 .

The rotation shaft 300 is fastened to the rotor 220 and passes through the central portion of the rotor 220 , and one end of the rotation shaft 300 passes through the central portion of the center housing 110 , and the rotation shaft 300 passes through the center of the center housing 110 . ) may be supported by the other end of the front housing 120 . An eccentric bush 310 for converting a rotational motion of the rotational shaft 300 into a rotational motion of the orbiting scroll 400 is provided at one end of the rotational shaft 300 .

The orbiting scroll 400 is interposed between the center housing 110 and the fixed scroll 500 , and a circular plate-shaped orbiting head plate 410 , from the center of the orbiting head plate 410 toward the fixed scroll 500 . It may include a protruding turning wrap 420 and a boss portion 430 protruding from the center of the turning end plate 410 to the opposite side of the turning wrap 420 and fastened to the eccentric bush 310 .

The fixed scroll 500 includes a disk-shaped fixed head plate 510 , a fixed wrap 520 protruding from the center of the fixed end plate 510 and meshed with the orbiting wrap 420 , and the fixed end plate 510 . It may include a fixed side plate 530 that protrudes from the outer periphery and is fastened to the center housing 110 .

As shown in FIG. 2 , the fixed wrap 520 may extend from the center side of the fixed scroll 500 to the outer periphery side, for example, in a logarithmic spiral shape. The fixed side plate 530 is formed in an annular shape extending along the outer periphery of the fixed end plate 510 , and may include a fixed wrap entry part 532 connected to the fixed wrap 520 on one side.

The axial height of the fixed wrap inlet 532 is at a level equal to the axial height of the fixed wrap 520 so that the refrigerant in the compression chamber C does not leak through the fixed wrap inlet 532 . can be formed. In addition, the radial thickness of the fixing wrap inlet 532 may be formed to be thicker than the radial thickness of the fixing wrap 520 so as to improve the support rigidity of the fixing wrap 520 . At this time, in order to reduce the weight and cost of the fixed scroll 500 , the fixed side plate 530 has a radial thickness of a portion excluding the fixed lap entry 532 in the radial direction of the fixed lap entry 532 . It may be formed thinner than the thickness.

The fixed head plate 510 includes one or more discharge ports 512 for discharging the refrigerant from the compression chamber C to the discharge chamber D. In this embodiment, the plurality of outlets 512 are formed to prevent the refrigerant from being overcompressed, and the plurality of outlets 512 are connected to one surface of the fixed scroll 500 by a discharge reed valve 600 . can be opened and closed.

Specifically, as shown in FIGS. 3 to 6 , the compression chamber C is located on the radially upper centrifugal side of the fixed scroll 500 and the pressure of the refrigerant is in the first pressure range. ), a second compression chamber (C2) located on the radially upper centripetal side of the fixed scroll (500) than the first compression chamber (C1) and having a second pressure range in which the pressure of the refrigerant is higher than the first pressure range; and a third compression chamber (C3) located on the radially upper centripetal side of the fixed scroll (500) rather than the second compression chamber (C2) and having a third pressure range higher than the second pressure range, , The first compression chamber (C1), the second compression chamber (C2), and the third compression chamber (C3) may be formed as a pair of two, respectively.

The first compression chamber C1 includes a first outer compression chamber C11 formed by an outer circumferential surface of the orbiting wrap 420 and an inner circumferential surface of the fixed wrap 520, an inner circumferential surface of the orbiting wrap 420, and the It may include a first inner compression chamber (C12) formed by the outer peripheral surface of the fixing wrap (520).

The second compression chamber C2 includes a second outer compression chamber C21 formed by an outer circumferential surface of the orbiting wrap 420 and an inner circumferential surface of the fixed wrap 520 and an inner circumferential surface of the orbiting wrap 420 and the It may include a second inner compression chamber (C22) formed by the outer peripheral surface of the fixing wrap (520).

The third compression chamber C3 includes a third outer compression chamber C31 formed by an outer circumferential surface of the orbiting wrap 420 and an inner circumferential surface of the fixed wrap 520 and an inner circumferential surface of the orbiting wrap 420 and the It may include a third inner compression chamber (C32) formed by the outer peripheral surface of the fixing wrap (520).

At this time, the plurality of outlets 512 is a main outlet ( 512a), a first sub discharge port 512b and the second formed outside the fixed head plate 510 in a radial direction with respect to the main discharge port 512a to discharge the refrigerant of the second outer compression chamber C21 It is formed on the radially outer side of the fixed head plate 510 with respect to the main outlet 512a to discharge the refrigerant in the inner compression chamber C22, and the first sub outlet 512b with respect to the main outlet 512a. ) may include a second sub-discharge port 512c formed on the opposite side.

A structure in which the discharge reed valve 600 and the retainer 700 are mounted to the fixed scroll 500 will be described with reference to FIGS. 7 and 8 .

The discharge reed valve 600 is interposed between the fixed head plate 510 and the retainer 700 to communicate and block the discharge port 512 and the discharge chamber D. The retainer 700 is for guiding and restricting an opening position of the discharge reed valve 600 .

Referring to FIG. 7 , specifically, the discharge reed valve 600 includes a valve coupling part 610 coupled to the fixed end plate 510 , extending from the valve coupling part 610 and connecting the main discharge port 512a. The main opening/closing unit 620 for opening and closing, the first sub opening/closing unit 630 extending from the valve coupling unit 610 and opening/closing the first sub discharge port 512b, and the second sub opening/closing unit 630 extending from the valve coupling unit 610 A second sub opening/closing unit 640 for opening and closing the sub discharge port 512c may be included.

In order to minimize the cost and weight of the discharge reed valve 600 , the valve coupling part 610 , the main opening/closing part 620 , the first sub opening/closing part 630 , and the second sub opening/closing part 640 are integrally formed. can be formed with In addition, the circumferential width of the valve fastening part 610 may be formed to be smaller than the distance between the first sub opening and closing part 630 and the second sub opening and closing part 640 .

A fastening hole 612 is formed in the valve fastening part 610 so that a fastening member 650 , for example, a fastening bolt may pass through the fastening hole 612 to be fastened to the fixed head plate 510 . Here, in order to receive sufficient support even when the discharge reed valve 600 is fastened to the fixed end plate 510 by a single fastening member 650, the fastening member 650 has a relatively large thickness and height. It may be preferable to be fastened to the fixed wrap inlet 532 side.

Here, when the pressures of the third outer compression chamber C31 and the third inner compression chamber C32 reach the discharge pressure level, the main opening/closing unit 620 opens the main discharge port 512a. At this time, when the pressure in the second outer compression chamber C21 exceeds the second pressure range, the first sub opening/closing unit 630 opens the first sub discharge port 512b to open the second outer compression chamber ( When the pressure of C21) is lowered to a level included in the second pressure range, and the pressure of the second inner compression chamber C22 exceeds the second pressure range, the second sub opening/closing unit 640 opens the second By opening the sub discharge port 512c to lower the pressure of the second inner compression chamber C22 to a level included in the second pressure range, the pressure of the refrigerant discharged from the main discharge port 512a becomes excessively higher than the discharge pressure it can be prevented That is, overcompression can be prevented.

On the other hand, the first sub-discharge port 512b and the second sub-discharge port 512c are formed to prevent a pressure imbalance between the second outer compression chamber C21 and the second inner compression chamber C22 from occurring. It may be formed in communication with the outer compression chamber (C21) and the second inner compression chamber (C22) at the same time. That is, when the communication between the first sub discharge port 512b and the second outer compression chamber C21 is started, the communication between the second sub discharge port 512c and the second inner compression chamber C22 is started. can be formed.

And, preferably, the first sub discharge port 512b and the second sub discharge port 512c may be formed to be shielded simultaneously with the second outer compression chamber C21 and the second inner compression chamber C22. have. That is, when the communication between the first sub discharge port 512b and the second outer compression chamber C21 is terminated, the communication between the second sub discharge port 512c and the second inner compression chamber C22 is terminated. can be formed.

The retainer 700 may have a shape corresponding to the discharge reed valve 600 .

Referring to FIG. 8 , specifically, the retainer 700 extends from the retainer coupling part 710 to correspond to the retainer coupling part 710 coupled to the discharge reed valve 600 and the main opening/closing part 620 . and a main retainer portion 720 formed to be inclined at a predetermined angle from one surface of the fixed scroll 500, and the retainer fastening portion 710 to correspond to the first sub opening and closing portion 630 and extending from the fixed scroll ( The fixed scroll 500 extends from the retainer fastening part 710 so as to correspond to the first sub retainer part 730 and the second sub opening and closing part 640 formed at a predetermined angle from one surface of the fixed scroll 500 . It may include a second sub-retainer unit 740 formed to be inclined at a predetermined angle from one surface.

At this time, the angle at which the main retainer part 720 , the first sub retainer part 730 , and the second sub retainer part 740 are inclined from the fixed head plate 510 depends on the opening amount of the discharge reed valve 600 . can be determined accordingly.

A fastening hole 712 is formed in the retainer fastening part 710 so that the fastening member 650 may pass through the fastening hole 712 to be fastened to the fixed head plate 510 . That is, as the fastening member 650 continuously passes through the fastening hole 712 of the retainer fastening part and the fastening hole 612 of the valve fastening part and is fastened to the fixed head plate 510 , the discharge reed valve 600 ) and the retainer 700 may be mounted on the fixed scroll 500 . Similarly, the retainer coupling part 710 , the main retainer part 720 , the first sub retainer part 730 , and the second sub retainer part 740 may be integrally formed.

The main retainer unit 720 includes a main head 722 corresponding to the main outlet 512a, and a main support 724 extending from the main head 722 to the retainer fastening unit 710. may include In addition, the first sub-retainer part 730 includes a first sub-head part 732 corresponding to the first sub-discharge port 512b, and the retainer fastening part 710 from the first sub-head part 732 . ), and the second sub retainer part 740 includes a second sub head 742 corresponding to the second sub outlet 512c, and the second A second sub support 744 extending from the sub head 742 to the retainer fastening part 710 may be included.

Here, in order to reduce noise generated when the discharge reed valve 600 is opened and the retainer 700 is hit, at least a portion of the retainer 700 on one surface facing the discharge reed valve 600 is buffered A member 800 is provided. In particular, the buffer member 800 is provided in a region of the retainer 700 that is in contact with the discharge reed valve 600 when the refrigerant is discharged while the discharge reed valve 600 is opened.

As such, in the present invention, as a separate buffer member 800 is provided on the retainer 700, unlike the case in which a buffer material is coated on a conventional reed valve, the weight and thickness of the reed valve are not affected, so the reed valve The problem of behavior and coating wear can be solved.

The buffer member 800 may be made of, for example, polytetrafluoroethylene (PTFE). As such, when the discharge reed valve 600 and the retainer 700 come into contact while the discharge reed valve 600 is opened, the steel-to-steel contact is not made by the buffer member 800 . Noise can be reduced.

Hereinafter, the retainer 700 provided with the buffer member 800 will be described in detail with reference to FIGS. 9 to 11 .

In this embodiment, the buffer member 800 is provided in the main retainer unit 720 . This is because the sub discharge ports 512b and 512c are opened only when abnormal overpressure occurs, so the number of times that the sub opening and closing parts 630 and 640 are opened is relatively smaller than the number of times that the main opening and closing part 620 is opened every time it is discharged. to be. That is, the main cause of noise generation due to the blow of the valve is the main opening/closing unit 620 corresponding to the main discharge port 512a, and not the sub opening/closing units 630 and 640 . Accordingly, it is preferable to provide the buffer member 800 only in the main retainer unit 720 so as to reduce the noise caused by the valve hitting while reducing the installation cost and time of the buffer member.

Even after the buffer member 800 is provided in the main retainer part 720 , the thickness of the main retainer part 720 is such that the opening degree of the discharge reed valve 600 is not affected. It may have a thickness smaller than the thickness of In particular, it is preferable that the sum of the thickness of the buffer member 800 and the thickness of the main retainer portion 720 is the same as the thickness of the retainer fastening portion 710 . In this embodiment, all portions of the retainer 700 except for the main retainer portion 720 have the same thickness.

The buffer member 800 may have the same shape as the main retainer unit 720 . In this embodiment, since the main retainer unit 720 includes a main head 722 and a main support 724, the buffer member 800 is also a buffer head corresponding to the main head 722 ( 822) and a buffer support 824 corresponding to the main support 724 may be included.

However, it goes without saying that the buffer member 800 may have a shape different from that of the main retainer unit 720 . A portion in contact with the main retainer unit 720 while the main opening/closing unit 620 is opened corresponds to the vicinity of the boundary between the main head unit 722 and the main support unit 724 . Accordingly, a buffer member is always provided near the boundary between the main head 722 and the main support 724 in contact with the main opening and closing part 620, and the remaining part where the main opening and closing part 620 does not contact is made of material. It may be omitted for saving and weight reduction. For example, the buffer member 800 includes a buffering head corresponding to the main head and a buffering support corresponding to the main support, but part of the end of the buffering head far from the boundary or the end of the buffering support is may be omitted. Here, "corresponding" means that the positions are formed to at least partially overlap, and does not mean that they are formed in the same shape.

A slot 760 is formed on one surface of the retainer 700 to couple the retainer 700 and the buffer member 800 . As shown in FIG. 10 , in the present embodiment, the slot 760 is elongated along the longitudinal direction of the main retainer unit 720 .

In addition, as shown in FIG. 11 , a protrusion 860 is formed on one surface of the buffer member 800 facing the retainer 700 . The protrusion 860 may have a shape corresponding to the slot 760 . Accordingly, the protrusion 860 may be fitted into the slot 760 and the buffer member 800 may be coupled to the retainer 700 .

In this case, in order to prevent the buffer member 800 from being separated from the retainer 700 , the innermost side of the slot 760 in the depth direction may be formed wider than the outermost side in the depth direction. According to an example shown in FIG. 10 , the slot 760 may be inclined to gradually increase in width in the depth direction, for example, in a trapezoidal shape. Similarly, the protrusion 860 may also be inclined in a shape corresponding to the slot 760 . Accordingly, after the protrusion 860 of the buffer member is inserted into the slot 760 along the longitudinal direction of the main retainer part 720, it is not separated due to the inclined shape.

Furthermore, a fixing groove 770 is formed in the retainer fastening part 710 to correspond to the position of the slot so as to extend from the slot 760 , and the buffer member 800 is inserted into the fixing groove 770 . A fixing protrusion 870 may be provided. Accordingly, the buffer member 800 may be coupled to the main retainer unit 720 through the protrusion 860 as well as to the retainer coupling unit 710 through the fixing protrusion 870 . it can be

Next, a retainer 1700 and a buffer member 1800 according to another embodiment of the present invention will be described with reference to FIGS. 12 and 13 .

For coupling between the retainer 1700 and the buffer member 1800 , a slot 1760 is similarly formed on one surface of the retainer 1700 . As shown in FIG. 12 , in the present embodiment, the slot 1760 extends long along the longitudinal direction of the main retainer unit 1720 .

In addition, as shown in FIG. 13 , a protrusion 1860 is formed on one surface of the buffer member 1800 facing the retainer 1700 . The protrusion 1860 may have a shape corresponding to the slot 1760 . Accordingly, the protrusion 1860 may be fitted into the slot 1760 , and the buffer member 1800 may be coupled to the retainer 1700 .

At this time, in order to prevent the buffer member 1800 from being separated from the retainer 1700 , the slot 1760 includes a first extension portion 1762 extending in a depth direction, and the first extension portion 1762 . may include a pair of second extensions 1764 extending to both sides in the width direction. In this embodiment, the pair of second extensions 1764 is perpendicular to the first extension 1762 to form an overall convex shape. Accordingly, after the protrusion 1860 of the cushioning member is fitted in the slot 1760 along the longitudinal direction of the main retainer portion 1720, it is not separated due to its vertically bent shape.

Furthermore, a fixing groove 1770 is formed in the retainer fastening part 1710 to correspond to the position of the slot so as to extend from the slot 1760 , and the buffer member 1800 is fixed to be inserted into the fixing groove 1770 . A protrusion 1870 may be provided.

Hereinafter, the effect of the scroll compressor of the present invention will be described.

When power is applied to the motor 200 , the rotating shaft 300 rotates together with the rotor 220 , and the orbiting scroll 400 receives a rotational force from the rotating shaft 300 through the eccentric bush 310 . Receive it and rotate it. Due to this, the volume of the compression chamber (C) can be reduced while continuously moving toward the center side.

Accordingly, the refrigerant sucked into the compression chamber (C) is compressed while moving toward the center along the movement path of the compression chamber (C), and the discharge reed valve 600 is opened and the discharge chamber (512) through the discharge port (512). It may be discharged to (D), and the refrigerant having a discharge pressure discharged to the discharge chamber (D) may be discharged to the outside of the compressor through the discharge port.

According to the present invention, since the noise that the discharge reed valve 600 hits the retainer 700 when the refrigerant passes through the discharge reed valve 600 can be reduced by the buffer member 800, the operating noise is reduced can be

The present invention is not limited to the specific embodiments and descriptions described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the present invention as claimed in the claims. and such modifications shall fall within the protection scope of the present invention.

100: housing 110: center housing
120: front housing 130: rear housing
200: motor 210: stator
220: rotor 300: rotation shaft
310: eccentric bush 400: orbiting scroll
410: swivel head plate 420: swivel wrap
430: boss 500: fixed scroll
510: fixed head plate 512: outlet
520: fixed wrap 530: fixed side plate
532: fixed wrap entry 600: discharge reed valve
610: valve fastening part 612: fastening hole
620: main opening/closing unit 630: first sub opening/closing unit
640: second sub opening and closing part 650: fastening member
700: retainer 710: retainer fastening portion
712: fastening hole 720: main retainer part
722: main head 724: main support
730: first sub-retainer part 732: first sub-head part
734: first sub support part 740: second sub retainer part
742: second sub head 744: second sub support
760: slot 770: fixing groove
800: buffer member 822: buffer head
824: buffer support 860: protrusion
870: fixed projection
1700: retainer 1710: retainer fastening portion
1720: main retainer unit 1760: slot
1762: first extension 1764: second extension
1770: fixing groove 1800: buffer member
1860: protrusion 1870: fixing projection
C: Compression chamber D: Discharge chamber
S1: Motor accommodation space

Claims (14)

housing;
a motor provided in the housing;
a rotating shaft rotated by the motor;
a orbiting scroll in association with the rotating shaft and pivoting;
a fixed scroll forming a compression chamber (C) together with the orbiting scroll;
a discharge reed valve coupled to one surface of the fixed scroll to open and close one or more discharge ports of the fixed scroll through which the refrigerant compressed in the compression chamber is discharged; and
a retainer coupled to the discharge reed valve to limit the degree to which the discharge reed valve is opened;
A scroll compressor, characterized in that the retainer is provided with a buffer member on at least a portion of the surface facing the discharge reed valve.
According to claim 1,
A slot is formed on one surface of the retainer,
A protrusion is formed on one surface of the buffer member facing the retainer,
As the protrusion is fitted into the slot, the buffer member is coupled to the retainer.
3. The method of claim 2,
The scroll compressor, characterized in that the depth direction innermost side of the slot is formed to be wider than the depth direction outermost side.
3. The method of claim 2,
The slot comprises a first extension portion extending in a depth direction, and a pair of second extension portions extending from the first extension portion to both sides in a width direction from the first extension portion.
According to claim 1,
The buffer member is a scroll compressor, characterized in that made of polytetrafluoroethylene (PTFE; polytetrafluoroethylene).
3. The method of claim 2,
The one or more outlets,
a main outlet formed on a central side of the fixed scroll;
and first and second sub-discharging holes formed on the radially outer side of the fixed scroll with respect to the main outlet and opposite to each other with respect to the main outlet.
7. The method of claim 6,
The discharge reed valve is
a valve coupling part coupled to the fixed scroll;
a main opening and closing part extending from the valve fastening part and opening and closing the main outlet;
a first sub opening/closing unit extending from the valve fastening unit and opening and closing the first sub discharge port; and
and a second sub opening/closing unit extending from the valve coupling unit and opening and closing the second sub discharge port.
8. The method of claim 7,
The retainer is
a retainer coupling part coupled to the discharge reed valve;
a main retainer part extending from the retainer fastening part to correspond to the main opening/closing part and being inclined at a predetermined angle from one surface of the fixed scroll;
a first sub retainer part extending from the retainer fastening part to correspond to the first sub opening and closing part and being inclined at a predetermined angle from one surface of the fixed scroll; and
and a second sub retainer part extending from the retainer fastening part to correspond to the second sub opening and closing part and inclined at a predetermined angle from one surface of the fixed scroll.
9. The method of claim 8,
The main retainer part includes a main head corresponding to the main outlet and a main support part extending from the main head to the retainer fastening part.
9. The method of claim 8,
The buffer member is characterized in that coupled to the main retainer, scroll compressor.
11. The method of claim 10,
The sum of the thickness of the buffer member and the thickness of the main retainer is the same as the thickness of the retainer fastening portion, scroll compressor.
11. The method of claim 10,
The slot is a scroll compressor, characterized in that extending in a lengthwise direction of the main retainer.
13. The method of claim 12,
A fixing groove is formed in the retainer fastening portion corresponding to the position of the slot so as to extend from the slot;
A scroll compressor, characterized in that the buffer member is provided with a fixing protrusion inserted into the fixing groove.
10. The method of claim 9,
The buffer member includes a buffer head corresponding to the main head and a buffer support corresponding to the main support, a scroll compressor.

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