KR100286311B1 - Structure for reducing noise of scroll compressor - Google Patents

Abstract

The present invention relates to a noise reduction structure of the scroll compressor, and integrally extends to the inner circumferential surface of the high and low pressure separating plate 33 and forms the refrigerant buffer film 40 at a predetermined angle so as to be located outside the valve housing 36. Then, the high pressure refrigerant discharged is buffered in the refrigerant buffer film 40 and then sent to the discharge chamber 37 through the wide opening 41, whereby the high pressure refrigerant gas directly passes through the inner wall of the sealed container. By blocking the price, there is an effect of reducing the noise generated when the high-pressure refrigerant directly hits the inner wall of the sealed container.

Description

STRUCTURE FOR REDUCING NOISE OF SCROLL COMPRESSOR}

The present invention relates to a noise reduction structure of a scroll compressor, and more particularly, to a noise reduction structure of a scroll compressor suitable for reducing noise by preventing a high pressure refrigerant gas discharged through a discharge port from directly hitting an inner wall of a sealed container. will be.

In general, a scroll compressor mounted to an air conditioner and a refrigerator is shown in FIG. 1, which will be briefly described as follows.

1 is a vertical cross-sectional view showing a structure of a conventional scroll compressor, as shown in the prior art, the conventional scroll compressor has a predetermined space in the upper and lower frames inside the closed container 1 having an internal space of a predetermined size, the upper and lower frames (2, 3) are respectively provided, and between the upper frame (2) and the lower frame (3), a stator (4) and a rotor (5) forming a motor are provided, and the rotor (5). The rotary shaft 6 is formed with the eccentric portion 6a which is rotated together with the rotation of the rotor 5 at the center of the center.

And, on the upper side of the upper frame 2, the rotating scroll (8) coupled to the lower side of the wrap (7a) of the fixed scroll (7) fixed to the upper frame (2) and the eccentric (6a) of the rotary shaft (6) The lap 8a is rotatably engaged with each other so as to generate pressure, and the lower wall 9 is provided with an old dam ring 9 for preventing rotation of the swing scroll 8.

In addition, a high and low pressure separation plate 10 for separating the inside of the sealed container 1 into a high pressure part and a low pressure part is fixedly installed by a plurality of bolts 11 on the outside of the upper surface of the fixed scroll 7. 7 is provided with a non-return valve 12 for preventing the back flow of refrigerant, and a valve holding hole 13a is provided above the non-return valve 12. The housing 13 is provided.

In addition, a suction pipe 14 for sucking refrigerant gas into a compressed space is provided on one side of the upper sealed container 1, and the discharge pipe 16 is connected to the discharge chamber 15 above the suction pipe 14. ) Is installed.

In the figure, reference numeral 17 is an oil.

The scroll compressor including each component as described above is powered and rotates the rotating shaft 6 while the rotor 5 rotates, and the rotating scroll 8 coupled to the rotating shaft eccentric 6a. This circular motion, i.e., orbital motion, and when the turning scroll 8 makes a turning motion, the pocket P, which is a compression space, is formed by the fixed scroll 7 and the wraps 7a and 8a of the turning scroll 8. The pocket P is moved to the center by the continuous swinging movement of the turning scroll 8 to reduce the volume, compresses the refrigerant gas sucked through the suction pipe 14 to a high pressure, and discharges the discharge port 7b. It is discharged through.

As described above, the high pressure refrigerant gas discharged through the discharge port 7b is discharged by the high and low pressure separator 10 by discharging the refrigerant gas in the direction of the arrow of FIG. 2 while opening the check valve 12. It is discharged to the chamber 15 and then sent to the condenser through the discharge pipe 16.

In addition, during non-compression, the high-pressure refrigerant discharged into the discharge chamber 15 presses the non-return valve 12 from the upper side to the lower side through the valve pressing hole 13a, and closely contacts the outlet of the discharge port 7b to discharge the chamber. The high pressure refrigerant discharged to (15) is prevented from flowing back.

However, in the conventional scroll compressor, not only the noise is generated by the friction sound with the valve housing 13 during the operation of the check valve 12, but also the high pressure discharged through the discharge port 7b as indicated by the arrow in FIG. As the refrigerant is discharged, the upper inner wall of the airtight container 1 is directly charged and there is a problem that severe noise is generated.

An object of the present invention devised in view of the above problems is to provide a noise reduction structure of a scroll compressor suitable for buffering the high-pressure refrigerant gas discharged to block the impact on the upper inner wall of the hermetic container.

1 is a longitudinal sectional view showing a structure of a conventional scroll compressor.

Figure 2 is a partial cross-sectional view for explaining the flow of the conventional refrigerant gas.

Figure 3 is a longitudinal sectional view showing the configuration of a scroll compressor to which the present invention noise reduction structure is applied.

Figure 4 is a partial cross-sectional view for explaining the operation of the scroll compressor to which the present invention is applied.

Explanation of symbols on the main parts of the drawings

30: fixed scroll 30b: discharge port

31: turning scroll 33: high and low pressure separator

35: non-return valve 36: valve housing

40: refrigerant buffer film 41: opening

In order to achieve the object of the present invention as described above, it is possible to compress the refrigerant sucked in a state in which the swing scroll is engaged with a fixed scroll having a high and low pressure separation plate installed at the upper edge thereof, and prevents the compressed refrigerant from being discharged through the discharge port. A scroll compressor configured to open a valve and discharge the lower outer portion of the valve housing, wherein the refrigerant is integrally extended to the high and low pressure separating plate to form an opening at an upper side thereof and to be inclined upward in an upper side of the valve housing. There is provided a noise reduction structure of a scroll compressor, which is constituted by forming a buffer film.

Hereinafter, with reference to the embodiment of the accompanying drawings, the noise reduction structure of the scroll compressor of the present invention configured as described above in detail as follows.

3 is a vertical cross-sectional view showing the configuration of a scroll compressor to which the present invention noise reduction structure is applied. As shown, the scroll compressor having the noise reduction structure according to the present invention includes a suction pipe 21 and a discharge pipe 22 at one upper end thereof. The upper and lower frames 25 and 26 are provided at regular intervals on the upper and lower sides of the airtight container 24 in which a certain amount of oil 23 is stored in the lower part. Between the upper frame 25 and the lower frame 26, a stator 27 and a rotor 28, which form a motor, are provided. In the center of the rotor 28, the rotor 28 rotates. Rotating shaft 29 is rotated along the pressing, the upper side of the upper frame 25 is engaged with the wrap 30a of the fixed scroll 30 fixed to the upper frame 25 and the arranging of the rotating shaft 29 Rotating scroll 31 with wrap 31a is rotatable such that eccentric portion 29a is coupled to the lower side. The lower wall of the swinging scroll 31 is provided with an old dam ring 32 that prevents rotation of the swinging scroll 31. An inner side of the sealed container 24 is disposed outside the upper surface of the fixed scroll 30. The high and low pressure separating plate 33 for separating the high pressure portion and the low pressure portion is fixed by a plurality of bolts 34, and to prevent the reverse flow of the refrigerant on the upper side of the discharge port (30b) formed in the fixed scroll (30) The non-return valve 35 is provided, and a valve housing 36 provided with a valve pressing hole 36a is provided above the non-return valve 35.

In addition, a refrigerant buffer membrane 40 is formed on the inner circumferential surface of the high and low pressure separating plate 33 so as to extend at a predetermined angle and positioned outside the valve housing 36, and is ejected to the lower outer side of the valve housing 36. The high pressure refrigerant which is to hit the refrigerant buffer film 40 so that the refrigerant does not directly hit the upper inner wall of the sealed container 24.

Preferably, the refrigerant buffer membrane 40 extends integrally during the manufacture of the high and low pressure separator 33, and the upper end of the refrigerant buffer membrane 40 is opened as wide as possible in the upward direction of the valve housing 36. It is preferable to form the inclined upward in the inward direction in the state in which the opening 41 is formed.

In the figure, reference numeral 29a denotes an eccentric portion, and 37 denotes a discharge chamber.

In the scroll compressor having the noise reduction structure as described above, the power is applied and the rotor 28 rotates the rotating shaft 29 while rotating, and the rotating scroll 31 coupled to the eccentric portion 29a of the rotating shaft 29. This turning, the pocket (P) which is a compression space is formed by the wrap (30a, 31a) of the fixed scroll 30 and the turning scroll 31, the pocket (P) of the continuous turning scroll (31) The volume is reduced while moving to the center by the pivoting movement to compress the refrigerant gas sucked through the suction pipe 21 to a high pressure to be discharged through the discharge port (30b).

As described above, the high pressure refrigerant gas discharged through the discharge port 30b is discharged in the direction of the arrow of FIG. 4 while opening the non-return valve 35, wherein the discharged refrigerant gas is a refrigerant buffer film ( It is discharged to the discharge chamber 37 formed by the high and low pressure separator 33 in a buffered state by hitting 40, and then sent to the condenser through the discharge tube 22.

That is, since the high-pressure refrigerant gas discharged through the discharge port 30b is first buffered in the refrigerant buffer film 40 and then sent to the discharge chamber 37 through a wide opening 41, As described above, the high-pressure refrigerant gas is blocked from directly hitting the inner wall of the sealed container 24, thereby reducing noise.

As described above in detail, the noise reduction structure of the scroll compressor of the present invention extends integrally to the inner circumferential surface of the high and low pressure separator plate and forms a refrigerant buffer film at a predetermined angle so as to be located outside the valve housing, and discharges the high pressure refrigerant discharged. The buffer is primarily buffered in the refrigerant buffer and then sent to the discharge chamber through a wide opening, thereby preventing the high pressure refrigerant gas from directly hitting the inner wall of the hermetic container. It is effective to reduce the noise generated when directly priced.

In addition, the refrigerant buffer membrane is formed to extend integrally with the high and low pressure separation plate, so that no separate assembly parts and assembly process are required.

Claims (1)

It is possible to compress the refrigerant sucked while the rotating scroll is engaged with the fixed scroll having the high and low pressure separating plate installed at the upper edge, and the compressed refrigerant can be discharged to the outside of the lower part of the valve housing by opening the check valve through the discharge port. In the scroll compressor, which is integrally extended to the high and low pressure separation plate, the opening is formed in the upper portion and the scroll buffer, characterized in that configured to form a refrigerant buffer so as to be inclined upward in the upper direction of the upper side of the valve housing Noise reduction structure of the compressor.