KR19990011276U - Refrigerant pipe sealing cap of hermetic compressor - Google Patents

Abstract

The present invention relates to a refrigerant pipe sealing cap of a hermetic compressor, in particular, a suction pipe (11) for supplying refrigerant gas into the compressor, a discharge pipe (12) for discharging the compressed refrigerant gas to the outside of the compressor, and a refrigerant oil and a refrigerant gas. A coupling part 22 which is inserted into and fixed inside the filling pipe 13 used for charging to seal the refrigerant pipes 11, 12 and 13, and a refrigerant pipe 11 into which the coupling part 22 is inserted; The sealing cap 20 is a refrigerant pipe 11 as the support portion 24 is pressed against the outer circumference of the 12 and 13 to prevent the coupling portion 22 from being separated from the refrigerant pipes 11, 12, 13. Since 12, 13 is firmly fixed, the sealing cap 20 can be easily prevented from being separated from the refrigerant pipes 11, 12, 13 due to an impact generated during the movement.

Description

A cap for sealing the refrigerant pipe of an enclosed reciprocating compressor

The present invention relates to a hermetic compressor, in particular a suction pipe for supplying refrigerant gas into the compressor and a discharge pipe for discharging the compressed refrigerant gas to the outside of the compressor to prevent moisture or foreign matter from entering into the produced compressor. The present invention relates to a refrigerant pipe sealing cap of a hermetic compressor for sealing a filling pipe used for oil and refrigerant gas filling.

In general, a compressor is a device that raises the pressure and temperature to a saturation pressure corresponding to the condensation temperature so that the low-temperature and low-pressure refrigerant gas evaporated in the evaporator can be easily condensed and liquefied in the condenser.

Such compressors include a reciprocating compressor that compresses refrigerant gas by using a reciprocating motion of a piston, a rotary compressor that rotates a compressor in a cylinder and compresses refrigerant gas, and converts velocity energy into pressure energy by using a centrifugal force of an impeller. There is a turbo compressor for compressing.

Such a compressor is mounted on a refrigerating device to perform a refrigerating operation together with a condenser, an expansion valve, and an evaporator, that is, a function of taking heat around an evaporator by using latent heat of evaporation of refrigerant gas.

In other words, when the compressor compresses the refrigerant gas and raises the pressure and temperature of the refrigerant gas to the saturation pressure, the condenser absorbs the heat of the refrigerant gas of high temperature and high pressure by using water or air to condense and liquefy the refrigerant gas. Let's do it. The refrigerant gas condensed and liquefied thus has a low temperature and pressure due to the throttling action of the expansion valve, and the refrigerant gas evaporates in the evaporator to absorb heat from the object to be cooled to perform a freezing action.

The domestic refrigerator compressor is mainly one-stage reciprocating type and is sealed in the case for soundproofing and dustproofing and installed at the bottom of the refrigerator. 3 is a plan view showing a general hermetic reciprocating compressor operating as described above.

As shown in the figure, the compression mechanism and the driving motor constituting the compressor 100 is hermetically received inside the case consisting of the upper case and the lower case, the compression mechanism and the drive motor is coupled by the frame 110 It is suspended or supported on the case through a compression spring or a leaf spring for soundproof and dustproof.

That is, a cylinder block 120 having a piston for compressing refrigerant gas is installed on the upper portion of the frame 110 so that the refrigerant sucked through the suction muffler 130 is provided on one side of the cylinder block 120. The suction and discharge valve assembly 121 is installed to supply gas into the cylinder block 120 and supply the refrigerant gas compressed in the cylinder block 120 to the discharge muffler 140.

The suction and discharge valve assembly 121 is composed of a flapper or lead-type thin plate structure which is generally elastic for miniaturization, and is opened and closed passively according to the pressure difference generated by the reciprocating motion of the piston. The refrigerant gas is sucked or discharged into / from the cylinder block 120.

That is, when the eccentric shaft 160 rotates by the drive motor mounted on the lower portion of the frame 110, the piston reciprocates by the amount of eccentric rotation of the eccentric shaft 160. In other words, when the piston in the cylinder block 120 reverses, the low-temperature / low-pressure refrigerant gas is sucked into the cylinder block 120 through the suction pipe 131 and the suction muffler 130 from an external evaporator.

On the other hand, when the piston is advanced, the high-temperature, high-pressure refrigerant gas from the interior of the cylinder block 120 is discharged to the condenser through the discharge muffler 140 and the discharge pipe 141. At this time, the suction muffler 130 and the discharge muffler 140 is filled with the refrigerant gas to reduce the noise due to the pulsation of the pressure generated during the suction and discharge of the refrigerant gas. Reference numeral 171, which is not described, shows a filling pipe used when filling the refrigerator oil and the refrigerant gas.

The refrigerant pipe of the compressor, that is, the suction pipe 131, the discharge pipe 141 and the filling pipe 171 is sealed to prevent moisture or foreign matter from penetrating into the compressor until the compressor is mounted on the refrigeration apparatus. That is, as shown in FIG. 4, when the pin is inserted into the insertion groove 183 formed in the body portion 181 and the coupling portion 182 of the sealing cap 180 and pushed into the refrigerant pipe 131, 141, 171, the rubber material is coupled. The portion 182 is extended to be inserted into the refrigerant pipes 131, 141, and 171.

As described above, when the coupling part 182 is inserted into the refrigerant pipe 131, 141, 171, the pin is removed from the insertion groove 183 formed in the body part 181 and the coupling part 182 of the sealing cap 180. The extended coupling portion 182 is contracted to seal the refrigerant pipes 131, 141, and 171.

However, in the conventional sealing cap 180 as described above, only the coupling portion 182 is inserted into the refrigerant pipes 171, 172, and 173 to be coupled to each other so that the lubricant remaining on the inner circumference of the refrigerant pipes 171, 172, and 173 remains charged or impacts during movement. In this case, there is a problem that the sealing cap 180 is easily separated from the refrigerant pipes 171, 172, and 173.

Accordingly, the present invention is designed to solve the above problems, and the sealing cap is fixed to the refrigerant pipe to be firmly fixed to the refrigerant to prevent the sealing cap from being easily separated from the refrigerant pipe due to the impact generated during the movement. It is an object to provide a pipe sealing cap.

In order to achieve the above object, the present invention is a general hermetic compressor, the suction pipe for supplying the refrigerant gas into the compressor and the discharge pipe for discharging the compressed refrigerant gas to the outside of the compressor and used for the refrigerant oil and refrigerant gas filling A coupling part inserted into and fixed inside the filling pipe to seal the refrigerant pipe, and a support part pressed against the outer circumference of the refrigerant pipe into which the coupling part is inserted to prevent the coupling part from being separated from the refrigerant pipe. It is done.

1 shows a hermetic compressor equipped with a refrigerant pipe sealing cap according to the present invention

drawing,

2 is an enlarged view of a coupling state of the sealing cap and the refrigerant pipe shown in FIG.

drawing,

3 is a view showing a hermetic compressor equipped with a conventional refrigerant pipe sealing cap;

4 is an enlarged view of a coupling state of the sealing cap and the refrigerant pipe shown in FIG.

drawing.

Explanation of symbols for main parts of the drawings

10 case 11 suction pipe

12: discharge pipe 13: filling pipe

20: sealing cap 21: body

22: coupling portion 23: insertion groove

24 support part

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in detail.

1 is a view showing a hermetic compressor equipped with a refrigerant pipe sealing cap according to the present invention, Figure 2 is an enlarged view showing a coupling state of the sealing cap and the refrigerant pipe shown in FIG.

As shown in the figure, a suction pipe 11 for supplying refrigerant gas into the compressor, a discharge pipe 12 for discharging the compressed refrigerant gas to the outside of the compressor, and a filling pipe 13 used for refrigerating the refrigerant oil and the refrigerant gas In the body portion 21 of the sealing cap 20 to seal the coupling portion 22 is inserted into the refrigerant pipes (11, 12, 13) is fixed.

In addition, the inner side of the body portion 21 and the coupling portion 22 of the sealing cap 20 when extending the coupling portion 22 of the rubber material when the sealing cap 20 is coupled to the refrigerant pipes (11, 12, 13) An insertion groove 23 for a pin is formed to allow the coupling portion 22 to be easily inserted into the refrigerant pipes 11, 12, and 13.

On the other hand, the support portion for preventing the coupling portion 22 is separated from the refrigerant pipes (11, 12, 13) by compressing the outer circumference of the refrigerant pipe (11, 12, 13) into which the coupling portion 22 is inserted ( 24 is formed on the body portion 21 to be spaced apart from the coupling portion 22 by a predetermined interval.

Therefore, when the pin is inserted into the insertion groove 23 formed in the body portion 21 and the coupling portion 22 of the sealing cap 20 and pushed into the refrigerant pipes 11, 12, 13, the coupling portion of the rubber material ( 22 is extended and inserted into the refrigerant pipes 11, 12 and 13.

As described above, the coupling portion 22 is inserted into the refrigerant pipes 11, 12, and 13 into the insertion groove 183 formed in the body portion 21 and the coupling portion 22 of the sealing cap 20. By removing the pin from the elongated coupling portion 22 is contracted to seal the refrigerant pipes (11, 12, 13). At this time, the refrigerant pipes 11, 12, and 13 are compressed by the coupling portion 22 and the support portion 24 of the sealing cap 20, the coupling portion 22 is the refrigerant pipe 11 due to the impact generated during the movement, etc. , 12 and 13) can be prevented.

As described above, the present invention, by firmly fixing the sealing cap to the refrigerant pipe to prevent the sealing cap from being separated from the refrigerant pipe due to the impact generated during the movement, etc. can prevent the inflow of moisture or foreign matter into the compressor. have.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined only by the scope of the attached utility model registration request.

Claims (1)

In a typical hermetic compressor, a suction pipe (11) for supplying refrigerant gas into the compressor, a discharge pipe (12) for discharging the compressed refrigerant gas to the outside of the compressor, and a filling pipe (13) used for refrigerating the refrigerant oil and the refrigerant gas The coupling part 22 which is inserted into and fixed to the inner side of the refrigerant pipe 11, 12 and 13 and seals the refrigerant pipe 11, 12, 13 and the outer periphery of the refrigerant pipe 11, 12, 13 into which the coupling part 22 is inserted. The refrigerant pipe sealing cap of the hermetic compressor, characterized in that the coupling portion 22 has a support portion 24 to prevent the refrigerant pipe from being separated from the refrigerant pipes (11, 12, 13).