KR100455422B1 - Sealing device for hermetic compressor unit - Google Patents

Abstract

The present invention relates to a hermetic compressor unit sealing device, comprising a sealing member inserted into an end portion of a refrigerant inlet tube of an accumulator and a refrigerant discharge tube of an hermetic compressor, and a release preventing cap that is covered at an end of the refrigerant inlet tube and the refrigerant discharge tube. In the hermetic compressor unit sealing device, the refrigerant inlet pipe and the sealing member inserted into each of the ends of the refrigerant discharge pipe is provided with a locking projection to be fixed and secured, and the separation prevention projection to be provided so that the separation prevention cap is locked. When the product is shipped from the hermetic compressor, the reliability of the product is reduced, rework and workability are deteriorated due to the detachment of the sealing member for sealing after injecting anticorrosive / moisture-proof gas to prevent internal rust prevention and moisture penetration of the compressor. Has the effect of improving the quality and workability of the hermetic compressor Pyehyeong provide a compressor unit, the sealing device.

Description

Sealing device for hermetic compressor unit {SEALING DEVICE FOR HERMETIC COMPRESSOR UNIT}

The present invention relates to a hermetic compressor, and more particularly, to a hermetic compressor unit sealing device capable of preventing separation of a sealing cap inserted into a compressor suction tube and a discharge tube during a product shipping and packaging operation of a hermetic rotary compressor.

Hereinafter, the configuration and operation of the sealing cap fixing device of the conventional hermetic rotary compressor will be described in detail as follows.

1 is a longitudinal sectional view of a conventional hermetic rotary compressor, FIG. 2 is a partially enlarged sectional view of FIG. 1, and FIG. 3 is a fastening view of a sealing device of the hermetic rotary compressor of FIG. 2.

As shown in Figure 1, the conventional hermetic rotary compressor unit 100 is an accumulator 150 for supplying a refrigerant gas in the gas state by separating the phase of the refrigerant flowing through the refrigerant pipe, and fastened to one side It is composed of a hermetic compressor 110 for sucking, compressing and discharging the refrigerant gas supplied from the accumulator.

The hermetic compressor 110 is located in the upper part of the sealed container 111, the electric motor part consisting of the stator 112 and the rotor 113, the bottom of the rotary shaft 115 is press-fit fixed to the inner diameter of the rotor 113 Outside of the cylinder 118 having a compression chamber P of a predetermined space sealed therein by the upper bearing 116 and the lower bearing 117 rotatably supported therethrough and the rotating shaft eccentric portion rotating therein. A compression piston including a vane (not shown) which is inserted into and coupled to the rotating piston 120 and one end of its outer circumferential surface is in line contact and separates the internal space of the compression chamber P into a suction zone and a compression zone. .

The cylinder 118 is a suction port 121 formed through the wall of the cylinder 118 so as to communicate with the suction region of the vane side to suck the refrigerant gas, and compressed in the compression region on the other side of the vane A discharge port 122 is formed along a portion of the upper surface of the wall of the cylinder 118 to discharge the gas.

The refrigerant discharge pipe 125 for discharging the high temperature and high pressure refrigerant gas discharged to the discharge port 122 to the outside of the hermetic compressor 110 is formed through the upper side of the sealed container 111, and the suction port ( The suction pipe 126 is formed by communicating with 121 and penetrating through one side of the sealed container 111, and the accumulator 150 having a refrigerant inlet pipe 153 for communicating with the suction pipe 126 to supply the refrigerant gas. ) Is fastened to one side of the sealed container.

The accumulator 150 includes an accumulator main body 151 having a predetermined accommodation space for separating the refrigerant in a gas-liquid state, a refrigerant inlet pipe 152 for introducing refrigerant through the upper side thereof, and a main body 151 of the accumulator. The refrigerant discharge pipe 153 is fastened and fixed to the suction pipe 126 communicated with the suction port 121 to supply the refrigerant of the gaseous phase separated from the inner receiving space into the cylinder 118.

As shown in FIG. 2, the refrigerant inlet pipe 152 and the refrigerant discharge pipe 125 encapsulate nitrogen gas or moisture-proof gas to prevent rust rust and moisture infiltration when the sealed rotary compressor unit 100 is shipped. And sealing means for sealing to maintain the sealed constant gas pressure.

The sealing means is inserted into the ends of the refrigerant inlet pipe 152 and the refrigerant discharge pipe 125, respectively, for sealing member 171 and the inserted sealing member 171 to prevent the separation by the gas pressure It consists of a separation prevention cap 172 is fastened and fixed to the screw fastening member 173.

In the figure, reference numeral 123 is a refrigerant discharge hole, 124 is a discharge valve, 127 is a silencer.

By such a configuration, the sealed rotary compressor unit 100, as shown in Figure 3, after the production is completed, the nitrogen gas to the moisture-proof gas is sealed to prevent the rust rust and moisture in the interior, the sealed constant gas The sealing member 171 is inserted into ends of the refrigerant inlet pipe 152 and the refrigerant discharge pipe 125 to seal the pressure, and the release preventing cap 172 is a refrigerant into which the sealing member 171 is inserted. The upper end of the inlet pipe 152 and the refrigerant discharge pipe 125 is fastened with a screw fastening member 173 on the upper side of the sealing member 171 to increase the tightening force and to prevent separation.

However, the separation prevention cap 172, which is squeezed to the ends of the refrigerant inlet pipe 152 and the refrigerant discharge pipe 125 and fastened and fixed to the sealing member 171 by the screw fastening member 173, receives a high-pressure gas pressure for a long time. There is a problem in that it does not provide the separation preventing force of the sealing member 171 to cause moisture penetration and rust blue inside the hermetic compressor unit 100, resulting in degradation of quality.

In addition, the sealing member is inserted into the end of the refrigerant inlet pipe 152 and the refrigerant discharge pipe 125, the separation prevention cap 172, and the number of processes and parts to be fastened and fixed with a screw fastening member (173). There is a problem that the productivity is reduced by the increase of.

According to the present invention devised to solve the above problems, a more improved hermetic compressor for maintaining the gas pressure of nitrogen gas or moisture-proof gas enclosed to prevent rust rust and moisture penetration for long-term storage after the manufacture of hermetic compressor unit. It is an object to provide a unit sealing device.

1 is a longitudinal sectional view of a hermetic rotary compressor to which a conventional sealing device is applied;

2 is a partially enlarged cross-sectional view of FIG.

3 is an exploded cross-sectional view of FIG.

Figure 4 is a longitudinal sectional view of the hermetic rotary compressor to which the sealing device of the present invention is applied;

5 is a partially enlarged cross-sectional view of FIG. 4B;

6 is an exploded cross-sectional view of FIG. 5;

* Description of the main parts of the drawings *

10: hermetic compressor 25: refrigerant discharge pipe

50: accumulator 52: refrigerant inlet pipe

71: release prevention protrusion 72: jamming projection

73: sealing member 74: release prevention cap

In order to achieve the above object, the present invention provides a hermetic compressor including a sealing member inserted into an end portion of a refrigerant inlet tube of an accumulator and a refrigerant discharge tube of a hermetic compressor, and a release preventing cap which is covered at an end of the refrigerant inlet tube and the refrigerant discharge tube. The unit sealing device, characterized in that it has a locking projection to hold and fix the sealing member inserted and coupled to the end of the refrigerant inlet pipe and the refrigerant discharge pipe, respectively, characterized in that it has a release preventing projection to lock the release preventing cap is locked. Provided is a hermetic compressor unit sealing device.

Here, the locking projection is more effective to form at least one inward projection by caulking along the outer peripheral surface of the refrigerant inlet pipe and the refrigerant discharge pipe.

In addition, the locking projection is preferably formed within 10mm from the end of the refrigerant inlet pipe and the refrigerant discharge pipe.

The release preventing protrusion is effective to roll down the end of the refrigerant inlet pipe and the refrigerant outlet pipe to the outside.

In addition, the release preventing cap is preferably a locking protrusion is formed on the inner end to be locked to the separation preventing protrusion.

Hereinafter, the configuration and operation of the sealed compressor unit sealing device according to an embodiment of the present invention will be described in detail.

4 is a longitudinal cross-sectional view of a hermetic rotary compressor to which the sealing device of the present invention is applied, FIG. 5 is an enlarged cross-sectional view of part B of FIG. 4, and FIG. 6 is an exploded cross-sectional view of FIG. 5.

As shown in FIG. 4, the hermetic compressor unit 1 of the present invention is coupled to an accumulator 50 for supplying a gaseous refrigerant gas by separating a phase of the refrigerant flowing through the refrigerant pipe, and being connected to one side. It consists of a hermetic compressor 10 for sucking, compressing and discharging the refrigerant gas supplied from the fixed accumulator 50.

The hermetic compressor (10) has an electric motor part formed of a stator (12) and a rotor (13) at the top of the hermetic container (11), and a rotary shaft (15) press-fitted to the inner diameter of the rotor (13) at the bottom thereof. Cylinder 18 having a compression chamber P of a predetermined space sealed therein by an upper bearing 16 and a lower bearing 17 rotatably supported therethrough, and a rotating shaft eccentric portion rotating therein ( Compression including a vane (not shown) for inserting and engaging the outer side of the rolling piston 20 and one end of the outer circumferential surface thereof in line contact with each other to separate the compression chamber P into a suction area and a compression area. The mechanism part is located.

The cylinder 18 is compressed into the suction port 21 formed through the wall of the cylinder 18 so as to communicate with the suction region of the vane side (not shown) to suck the refrigerant gas, and the other side of the vane (not shown) A discharge port 22 formed along a portion of the edge of the cylinder wall surface is provided to discharge the compressed gas in the region.

The refrigerant discharge pipe 25 for discharging the high temperature and high pressure refrigerant gas discharged to the discharge port 22 to the outside of the hermetic compressor 10 is formed through the upper side of the sealed container 11, and the suction port ( 21, which is connected to the airtight container (11) through one side of the suction tube 26 is formed, the accumulator 50 having a refrigerant inlet pipe 53 for communicating with the suction pipe 26 for supplying the refrigerant gas. ) Is provided on one side of the sealed container (11).

The accumulator 50 includes an accumulator main body 51 having a predetermined accommodation space for discharging the refrigerant in a gas-liquid state, a refrigerant inlet pipe 52 for introducing refrigerant through the upper side thereof, and the accumulator main body 51. It consists of a refrigerant outlet pipe 53 is fastened and fixed to the suction pipe 26 in communication with the suction port 21 to supply the refrigerant in the gas phase separated from the inner receiving space into the cylinder (18).

As shown in FIG. 5, the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 encapsulate nitrogen gas or moisture-proof gas to prevent rust and moisture infiltration when the sealed rotary compressor unit 1 is shipped. Sealing means are provided for sealing to maintain the sealed constant gas pressure.

The sealing means is rolled to wind the end of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 to the outside, respectively, the separation prevention projections 71 formed by curling treatment, and at the end formed with the separation prevention projections 71 At least one locking projection 72 formed to protrude inwardly through a caulking operation on one side of the circumferential wall of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 at a predetermined distance, and the refrigerant inlet pipe 52 and Sealing members 73 for inserting and sealing the ends of the refrigerant discharge pipe 25, respectively, and the refrigerant inlet pipe 52 and the refrigerant discharge pipe to prevent the inserted sealing member 73 from being separated by gas pressure. Insertion coupled to the outer end of the end (25) is made of a separation prevention cap 74 having a locking projection (75) on the inside so as to be caught and fixed to the separation prevention projection (71).

The locking projection 72 is formed within 10 mm from the end of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 when the sealing member 73 is inserted into the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25. A portion of the outer circumferential surface of the sealing member 73 is configured to be caught by the locking projection 72 while being pressed in.

In the drawings, reference numeral 23 denotes a refrigerant discharge hole, 24 a discharge valve, and 27 a silencer.

By such a configuration, the hermetic compressor unit sealing device, as shown in FIG. 6, encloses nitrogen gas or moisture-proof gas so as to prevent rust rust and moisture infiltration after the completion of the manufacture, and seals the sealed constant gas pressure. A sealing member 73 is inserted into the end of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 having the locking projection 72 formed therein so as to maintain the sealing protrusion 73, and one side of the outer circumferential surface of the sealing member 73 is pushed into the locking projection ( 72) to be fixed, and the release preventing cap 74 is pushed to the outside of the distal end of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25 into which the sealing member 73 is inserted and locked to the release preventing protrusion 71. The protrusion 75 is locked to prevent the sealing member 73 from being separated. In this state, one side of the sealing member 73 has an inner circumferential surface of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25. The locking protrusion and the locking protrusion 72 formed on the The lock projection 75 of the release preventing cap 74, which is covered by the refrigerant inlet pipe 52 and the refrigerant inlet pipe 52, is attached to the release preventing protrusion 71 of the refrigerant inlet pipe 52 and the refrigerant discharge pipe 25. Since the locked state is locked, the sealing member 73 is sealed without fail.

As described above, according to the present invention, the reliability of the product due to the detachment of the sealing member for sealing after injecting anticorrosive / moisture-proof gas to prevent internal rustproofing and moisture penetration of the compressor at the time of product shipment in the hermetic compressor and By improving the rework and workability reduction has the effect of improving the quality and workability of the hermetic compressor.

Claims (5)

In a hermetic compressor unit sealing apparatus including a sealing member inserted into an end portion of a refrigerant inlet tube of an accumulator and a refrigerant discharge tube of a hermetic compressor, and a release preventing cap which is covered at an end of the refrigerant inlet tube and the refrigerant discharge tube. Hermetic compressor unit sealing characterized in that it has a locking projection to hold and secure the sealing member inserted and coupled to the ends of the refrigerant inlet pipe and the refrigerant discharge pipe, as well as a separation preventing projection to lock the release preventing cap locked. Device. The sealed compressor unit sealing apparatus according to claim 1, wherein the locking protrusion forms at least one inward protrusion by caulking along the outer circumferential surfaces of the refrigerant inlet pipe and the refrigerant discharge pipe. 3. The hermetic compressor unit sealing device according to claim 1 or 2, wherein the locking projection is formed within 10 mm from an end of the refrigerant inlet pipe and the refrigerant discharge pipe. 2. The hermetic compressor unit sealing device according to claim 1, wherein the release preventing protrusion is formed by rolling the ends of the refrigerant inlet pipe and the refrigerant outlet pipe outward. The closed type compressor unit sealing device according to claim 1, wherein the release preventing cap has a locking protrusion formed at an inner end thereof so as to be locked to the release preventing protrusion.