TWI586927B - Refrigeration System Replacement Device for Closed Oil in Fully Sealed Compressor - Google Patents

Description

Refrigeration oil replacement device for full-close compressor of refrigeration cycle system

The invention relates to a maintenance and repair device for a fully enclosed compressor, in particular to a refrigeration oil replacement device for a fully closed compressor of a refrigeration cycle system.

Referring to FIG. 1 , a conventional hermetic compressor 9 is generally used as a refrigeration and refrigeration device, or a cooling and electronic component testing device for a semiconductor process line, and includes a housing 91 and a housing 91 disposed thereon. The low pressure end refrigerant return line 92, a motor 93 disposed in the housing 91 for providing power to compress the refrigerant, and a high pressure end refrigerant output line 94. When the hermetic compressor 9 is in operation, it is necessary to internally add a refrigerating oil to lubricate the electric motor 93 and other running parts, so that the fully hermetic compressor 9 can be smoothly operated.

Referring to Figure 2, the fully hermetic compressor 9 operates in conjunction with a condenser 81, a refrigerant controller 82, and an evaporator 83. The fully hermetic compressor 9 is configured to output a refrigerant compressed output into a high temperature and high pressure gas, and the condenser 81 dissipates the high temperature and high pressure gas into a low temperature and high pressure gas, and continues the gas toward the refrigerant controller. 82. The refrigerant controller 82 is capable of generating a pressure reduction, and the gas is sent to the evaporator 83 for evaporation and heat absorption, thereby forming a low-temperature and low-pressure gas, and returning to the hermetic compressor 9 to complete a freezing. cycle.

However, the refrigeration oil required for the operation of the fully hermetic compressor 9 may be deteriorated under long-term use, especially when used in the performance test of the electronic component, because the high temperature test and the low temperature test are separately performed, under the condition of forming a thermal shock. It is inevitable that the deterioration and the fouling will be accelerated, and the lubrication effect and the clogging of the capillary will be affected, and the life of the fully hermetic compressor 9 will be directly shortened, so that it must be periodically replaced to enable the fully-closed compressor 9 to operate smoothly. And extend the service life.

In the manner of updating the refrigerating oil of the fully hermetic compressor 9, it is usually necessary to perform a cumbersome dismantling operation to disassemble the low-pressure end refrigerant input line 92, and the high-pressure end refrigerant output line 94, and the entire unit must be turned over. The hermetic compressor 9 dumps the deteriorated refrigerating oil and even removes the disassembled pipe sections. After the dismantling and cleaning operations are completed, the low-pressure end refrigerant input line 92 and the high-pressure end refrigerant output line 94 must be re-welded and assembled again, and refilled in the assembled fully-closed compressor 9. The refrigerant and the refrigerating oil can restore the closed compressor 9 to normal operation. The dismantling operation and the cleaning operation described above are not only time-consuming and complicated, but also require a relatively high manpower and material cost. Therefore, in order to maintain and maintain the fully-closed compressor 9, it is necessary to have a more convenient way of replacing the refrigerating oil.

Accordingly, it is an object of the present invention to provide a refrigerating oil replacement device for a refrigerating cycle system fully hermetic compressor in which a refrigerating oil can be replaced without disassembling a pipe.

Thus, the refrigerating cycle system of the refrigerating cycle system of the present invention comprises a refrigerating oil replacing device, the fully hermetic compressor surrounding a closed chamber having a low pressure end and a high pressure end, and including a closed loop from the low pressure end An input line of the chamber, and an output line communicating from the high pressure end to the closed chamber, the output line including a compression working section extending into the closed chamber. When the fully hermetic compressor is in operation, the refrigerant mixed refrigerant oil is outputted from the output line to the condenser, re-entered into the evaporator via the refrigerant controller, and then returned to the closed chamber through the input line.

The refrigerating oil exchange device includes an inflating operation line in communication with the confined chamber for inflating the confined chamber, and a drainage line in communication with the confined chamber. The refrigerating oil in the hermetic compressor is infiltrated with many operating parts to provide lubrication. When the fully-closed compressor is shut down and the compressor is shut down, the pressurized gas is supplied from the inflating operation line, so that the degraded refrigerant oil in the closed chamber is pressurized and flows into the drain line, and is subsequently passed through The drainage line is discharged. When the deteriorated refrigerating oil in the sealed chamber is smoothly discharged, the new refrigerating oil and the refrigerant can be refilled from the inflating operation line, and the replacement operation of the refrigerating oil can be completed, so that the fully hermetic compressor can continue to operate smoothly.

The utility model has the advantages that: by additionally providing the drainage pipeline, the pressurized gas can be input from the inflation operation pipeline, and the decomposed refrigeration oil in the sealed chamber is pushed by the gas pressure, so that the degraded frozen oil is completely eliminated. Since the drainage line is discharged, no need to disassemble any pipeline, and then the new refrigeration oil can be added from the inflation operation pipeline to complete the replacement operation of the refrigeration oil.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 3, a first embodiment of a refrigerating oil changing device 1 for a hermetic compressor of a refrigerating cycle system according to the present invention, the hermetic compressor 2 is surrounded by a sealing member having a low pressure end 201 and a high pressure end 202. The chamber 200 includes an input line 21 communicating from the low pressure end 201 to the sealed chamber 200, an output line 22 communicating from the high pressure end 202 to the sealed chamber 200, and a supply line for providing compression Powered motor 23. The output line 22 includes a compression section 221 that extends into the containment chamber 200. The compression section 221 has an air outlet 220 that communicates with one of the compressors 23 of the motor 23. The first embodiment includes an inflating operation line 11 communicating with the sealed chamber 200 for injecting gas into the sealed chamber 200, an input valve 12 disposed in the input line 21, and an output valve disposed on the output An output valve 13 in the line 22, a drain line 14 communicating with the closed chamber 200, and a switching valve 15 disposed in the drain line 14. The input line 21 is for inputting refrigerant and refrigerating oil, and the output line 22 is for outputting the refrigerant compressed by the fully hermetic compressor 2; the input valve 12 and the output valve 13 are respectively used To control whether the input line 21 and the output line 22 are connected or not.

When the deteriorated refrigerating oil used in the fully hermetic compressor 2 is to be replaced, after the input valve 12 and the output valve 13 are closed, the inflating operation line 11 can be inflated and pressurized, thereby closing the sealed chamber. 200 generates a gas pressure that causes the deteriorated refrigerant oil to flow into the drain line 14. Then, as long as the switching valve 15 is opened, the degraded refrigerant oil flowing into the drain line 14 from the sealed chamber 200 is discharged through the drain line 14 and dripped to an oil tank 4 for centralized treatment. Wherein, the drainage line 14 includes a transparent window 141 for observing the flow of the frozen oil in the drainage line 14. When the deteriorated refrigerating oil in the drain line 14 is smoothly discharged, the new refrigerating oil and the refrigerant can be refilled from the inflating operation line 11, and the replacement operation of the refrigerating oil can be completed, so that the fully hermetic compressor 2 can continue. Smooth operation.

Referring to Fig. 4, the first embodiment is operated in conjunction with a condenser 31, a refrigerant controller 32, and an evaporator 33. The fully hermetic compressor 2 is for compressing a refrigerant and outputting a high temperature and high pressure gas, and the condenser 31 dissipates the high temperature and high pressure gas into a low temperature and high pressure gas, and continues the gas toward the refrigerant controller 32. The refrigerant controller 32 is configured to generate a decompression effect, and the gas is sent to the evaporator 33 for evaporation and heat absorption to form a low-temperature and low-pressure gas, and then returned to the fully-closed compressor 2 to complete a refrigeration cycle. .

5 is a second embodiment of a refrigerating oil changing device 1 for a hermetic compressor of a refrigerating cycle system according to the present invention. The second embodiment differs from the first embodiment in that the second embodiment further includes A pressure pump 16 connected to the inflating operation line 11. Since the refrigerant oil in the sealed chamber 200 is infiltrated into many operating parts to provide a lubricating effect, the method of simply using the drainage may not be completely eliminated. Therefore, the pressure pump 16 is configured to generate the pressure source to push the deteriorated refrigerant oil in the sealed chamber 200 with a relatively large pressure, so that the residual deteriorated refrigerant oil is pressurized and flows into the drain line 14. The pressure pump 16 preferably uses a method of inputting nitrogen gas to the inflating operation line 11 to generate a pressure source to prevent the residual gas from affecting the subsequent operation of the fully hermetic compressor 2.

Referring to FIG. 6, a third embodiment of a refrigerating oil changing device 1 for a hermetic compressor of a refrigerating cycle system according to the present invention is different from the second embodiment in that the third embodiment further includes Connected to the drainage line 14 for extracting the extraction mechanism 17 that deteriorates the frozen oil. The extraction mechanism 17 is preferably a vacuum pump or a cartridge, but is not limited thereto. Since the extraction mechanism 17 is connected to the upstream of the switching valve 15, when the deteriorated refrigerating oil in the sealed chamber 200 is to be excluded, in addition to increasing the air pressure from the inflating operation line 11, it can also be closed. After the switch valve 15 is closed, the suction from the drain line 14 is used to suck the deteriorated frozen oil remaining in the closed chamber 200 or even the entire system line. This third embodiment employs a simultaneous push from the upstream and suction from the downstream to further eliminate the deteriorated frozen oil in the sealed chamber 200.

When the refrigeration oil replacement operation of the hermetic compressor 2 is performed using the first embodiment to the third embodiment, the input line 21 and the output line 22 need not be disassembled, and the whole is not required to be inverted. The hermetic compressor 2 can smoothly remove the deteriorated refrigerating oil to be replaced in the sealed chamber 200 by means of the air pressure difference and the pipeline drainage, and can replenish the new refrigerating oil from the inflating operation line 11 to complete The replacement operation of the refrigerating oil effectively simplifies the replacement of the refrigerating oil of the fully hermetic compressor 2.

In summary, when the refrigeration oil replacement operation of the hermetic compressor 2 is performed using the first embodiment to the third embodiment, the input line 21 and the output line 22 need not be disassembled, that is, The sealed chamber 200 can be inflated and pressurized by the inflating operation line 11, and the degraded frozen oil in the closed chamber 200 is completely eliminated by the pipe drainage, and the inflated operation line 11 is taken from the inflated operation line 11 After the new refrigerating oil is replenished, the refrigerating oil replacement operation of the hermetic compressor 2 is easily completed, and the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧Refrigerated oil replacement unit

11‧‧‧Inflatable operation line

12‧‧‧Input valve

13‧‧‧Output valve

14‧‧‧Drainage line

141‧‧‧Window

15‧‧‧Switching valve

16‧‧‧pressure pump

17‧‧‧Extracting institutions

2‧‧‧ Fully enclosed compressor

200‧‧‧Closed chamber

201‧‧‧Low end

202‧‧‧High end

21‧‧‧Input line

22‧‧‧Output line

220‧‧‧ outlet

221‧‧‧Compressed working section

23‧‧‧Electric motor

231‧‧‧Compressed cylinder

31‧‧‧Condenser

32‧‧‧Refrigerant Controller

33‧‧‧Evaporator

4‧‧‧ oil tank

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic diagram illustrating a conventional fully enclosed compressor; FIG. 2 is a schematic view showing the fully enclosed FIG. 3 is a schematic view showing a first embodiment of a refrigerating oil changing device for a hermetic compressor of a refrigerating cycle system of the present invention; FIG. 4 is a schematic view, and FIG. 3 illustrates the first embodiment. FIG. 5 is a schematic view showing a second embodiment of a refrigerating oil changing device for a full-closed compressor of a refrigerating cycle system of the present invention; and FIG. 6 is a schematic view showing the fully closed type of the refrigerating cycle system of the present invention A third embodiment of a refrigeration oil replacement device for a compressor.

1‧‧‧Refrigerated oil replacement unit

11‧‧‧Inflatable operation line

12‧‧‧Input valve

13‧‧‧Output valve

14‧‧‧Drainage line

141‧‧‧Window

15‧‧‧Switching valve

2‧‧‧ Fully enclosed compressor

200‧‧‧Closed chamber

201‧‧‧Low end

202‧‧‧High end

21‧‧‧Input line

22‧‧‧Output line

220‧‧‧ outlet

221‧‧‧Compressed working section

23‧‧‧Electric motor

231‧‧‧Compressed cylinder

4‧‧‧ oil tank

Claims (8)

A refrigerating oil replacement device for a hermetic compressor of a refrigerating cycle system, the fully hermetic compressor surrounding a closed chamber having a low pressure end and a high pressure end, and including a closed chamber connected to the closed chamber from the low pressure end An input line, and an output line communicating from the high pressure end to the closed chamber, the output line including a compression working section extending into the closed chamber; the refrigeration oil changing device comprising: an inflation operating tube a passage communicating with the closed chamber for injecting gas into the closed chamber; and a drain line communicating with the closed chamber to inflate from the inflating operation line to enable refrigeration oil in the closed chamber It flows into the drainage line under pressure and is discharged to the outside of the sealed chamber. The refrigeration oil replacing device of the refrigerating cycle system full-closed compressor of claim 1, further comprising an input valve disposed in the input line, and an output valve disposed in the output line. The refrigeration oil replacing device of the refrigerating cycle system full-closed compressor according to claim 1, further comprising a switching valve disposed in the drainage line for controlling the circulation of the drainage line, and enabling The frozen oil is discharged from the drain line. The refrigeration oil replacing device of the refrigerating cycle system full-closed compressor according to claim 1, further comprising a pressure pump connected to the inflating operation pipeline, wherein the pressure pump can generate a pressure pump when the input valve and the output valve are closed A pressure source that pushes the refrigerating oil in the closed chamber into the drain line. The refrigerating system of the refrigerating cycle system fully enclosed compressor as claimed in claim 1 The changing device, wherein the drainage line comprises a transparent window. A refrigerating oil replacement device for a refrigerating cycle system fully-closed compressor according to claim 4, wherein the pressure pump generates the pressure source by inputting nitrogen gas to the inflating operation line. The refrigeration oil replacing device of the refrigerating cycle system full-closed compressor according to claim 3, further comprising an extracting mechanism connected to the draining pipe for extracting the refrigerating oil. The refrigeration oil replacing device of the refrigerating cycle system full-closed compressor according to claim 7, wherein the extracting mechanism is connected to the upstream of the switching valve.