KR20030002962A - Accumulator of refrigerating cycle - Google Patents

Abstract

PURPOSE: An accumulator of refrigerating cycle is provided to reduce noise generated due to boiling of liquefied refrigerant passing the accumulator. CONSTITUTION: An accumulator(60) includes a noise reducing member(70) reducing noise generated as liquefied refrigerant flowing therein is evaporated. The noise reducing member is annular porous metal pieces placed in a lower side of the accumulator and forming a plurality of air layers therein to absorb noise by friction or resistant vibration. The metal pieces are made of porous metal such as sintering metal alloy or hard chrome plating, or alternatively, sponge or expanded polystyrene.

Description

Accumulator of refrigerating cycle}

The present invention relates to an accumulator of a refrigeration cycle, and more particularly, to an accumulator of a refrigeration cycle for reducing the noise generated by the boiling of the gas refrigerant.

Generally, a refrigeration cycle circulates a working fluid to transfer heat from a low temperature heat source to a high temperature heat source to continuously perform freezing or cooling and heating.

Such a refrigeration cycle is divided into compression process, condensation process, expansion process, and evaporation process. In detail, the refrigerant is adiabaticly compressed by low temperature and low pressure gas refrigerant by a compressor to form a high temperature and high pressure refrigerant, and then sent to the condenser. The high temperature and high pressure refrigerant is cooled and condensed by external air to form a high pressure liquid refrigerant, and the high pressure liquid refrigerant is decompressed to a low temperature low pressure refrigerant while passing through an expansion valve, and the low temperature low pressure refrigerant flows into the evaporator to form a low pressure state. By evaporating to a lower temperature of the refrigerant tube by cooling the outside of the refrigerant tube by the repeated heat exchange action that absorbs the hot air outside the refrigerant tube and converts it into cold air.

1 is a view showing the main part of the refrigeration cycle according to the prior art.

Conventional refrigeration cycle is a compressor (2) for sucking and compressing the refrigerant as shown in Figure 1, and a condenser (4) to condense the high-temperature and high-pressure gas refrigerant flowing out from the compressor (2) to be a medium-temperature and high-pressure liquid refrigerant (4) ), An expansion valve (6) for lowering the medium temperature high pressure liquid refrigerant from the condenser (4) to a low temperature low pressure liquid refrigerant, and a low temperature low pressure liquid refrigerant from the expansion valve (6) from the surroundings. An evaporator 8 for absorbing heat of vaporization, and an accumulator 10 for separating gaseous refrigerant from the evaporator 8 and some unvaporized liquid refrigerant and supplying only the gaseous refrigerant to the compressor 2.

The accumulator 10 is provided between the evaporator 8 and the compressor 2 to prevent the inflow of some liquid refrigerant which is not vaporized in the evaporator 8 to the compressor 2 when the load of the refrigeration cycle is suddenly changed. It is installed in the inlet tube 12 is connected to the evaporator 8, the refrigerant flows in, and the inlet tube 12 is connected to one side to vaporize a portion of the liquid refrigerant that is not vaporized in the evaporator (8) 14) and an outlet pipe 16 connected to the other side of the case 14 to discharge the vaporized refrigerant to the compressor side.

Here, the oil return hole 12a is formed in the inlet pipe 12 extending into the case 14 to recover the oil mixed in the refrigerant to prevent the efficiency of the refrigeration cycle and failure of the freezing device.

Looking at the operation of the prior art configured as described above are as follows.

The refrigerant compressed to high temperature and high pressure through the compressor (2) radiates the heat of condensation to room temperature while passing through the condenser (4), and the high pressure liquid refrigerant passing through the condenser (4) is decompressed to pass through the expansion valve (6) to evaporator. After passing through (8) to absorb the heat of vaporization from the surroundings to cool the surroundings, some of the liquid refrigerant that has not been evaporated in the evaporator 8 while passing through the accumulator 10 is vaporized by absorbing the heat of vaporization from the surroundings and vaporizing only the gas refrigerant. Repeating the flow into the compressor (2) will be a freezing action.

However, in the accumulator of the refrigerating cycle according to the prior art, some of the liquid refrigerant that has not been vaporized while passing through the evaporator is boiled when absorbed excessive vaporization heat from the surroundings inside the accumulator case, thereby causing noise.

The present invention has been made to solve the above problems of the prior art, the liquid refrigerant is vaporized while passing through the accumulator in order to prevent some of the liquid refrigerant that has not been vaporized while passing through the evaporator to the compressor, wherein the liquid refrigerant It is an object of the present invention to provide an accumulator of a refrigeration cycle that can reduce the noise generated when the gas absorbs excessive vaporization heat from the surroundings.

1 is a view showing the main parts of the refrigeration cycle according to the prior art,

2 is a view showing the main part of the refrigeration cycle according to the present invention,

3 is a perspective view showing a noise reduction member according to the present invention.

<Explanation of symbols on main parts of the drawings>

52 compressor 54 condenser

56 expansion valve 58 evaporator

60: accumulator

The accumulator of the refrigerating cycle according to the present invention for solving the above problems is mounted inside the outer case, an evaporator for cooling the freezer compartment and the refrigerating compartment, a compressor for compressing the refrigerant flowing out of the evaporator to high temperature and high pressure, the evaporator and the inflow In the refrigeration cycle comprising an accumulator installed between the compressor in the pipe to prevent the liquid refrigerant from entering the compressor by separating the liquid refrigerant that has not evaporated in the evaporator, the accumulator is generated when the liquid refrigerant introduced into the vaporization There is a noise reduction member for reducing the noise.

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

2 is a view showing a refrigeration cycle according to the present invention, Figure 3 is a perspective view showing a noise reduction member according to the present invention.

As shown in FIG. 2, the refrigerating cycle according to the present invention sucks and compresses the refrigerant to increase the pressure of the refrigerant, thereby allowing the refrigerant to be liquefied even at a relatively high temperature and allowing the refrigerant to circulate smoothly in the refrigeration cycle. And a condenser 54 for liquefying the high temperature and high pressure gas refrigerant passing through the compressor 52 with water or air at room temperature to become a medium temperature high pressure liquid refrigerant, and the liquid passing through the condenser 54. In order to easily evaporate the refrigerant at a relatively high temperature, an expansion valve 56 for lowering the pressure by passing a narrower diameter pipe than the refrigerant pipe in other parts to form a low temperature and low pressure liquid refrigerant, and passing through the expansion valve 56. Evaporator 58 and the gas refrigerant from the evaporator 58 to cause the low-temperature low-pressure liquid refrigerant to exchange heat with the surrounding fluid while passing through the refrigerant pipe Only by separating the part failed to vaporize the liquid refrigerant gas refrigerant is composed of the accumulator 60 is supplied to the compressor (52).

The accumulator 60 is installed to prevent the liquid refrigerant from the evaporator 58 flows into the compressor 52 when the load of the refrigeration cycle is suddenly changed to cause a failure, such an accumulator 60 ) And the compressor 52 interact so closely together that the accumulator 60 has a significant impact on vibration and noise issues as well as the overall efficiency of the compressor 52 which is important in the refrigeration cycle.

Therefore, the structure and shape of the accumulator 60 is important in the performance of the compressor.

The accumulator 60 is connected to the evaporator 58, the inflow pipe 62 is a portion of the liquid refrigerant and gas refrigerant that is not vaporized, and the inlet pipe 62 is connected to one side of the liquid refrigerant and gas When the refrigerant is introduced, the case 64 is formed of a case 64 having a large surface area to vaporize the liquid refrigerant, and is connected to one side of the case 64 to form an outlet pipe 66 which discharges the gas refrigerant to the compressor 52.

The inlet pipe 62 is partially extended into the case 64, and an oil return hole 62a is formed in the inlet pipe 62 formed inside the case 64, so that the refrigerant circulates in the refrigeration cycle. By allowing the mixed oil to be recovered, the efficiency of the refrigeration cycle is improved, and the freezing device is prevented from failure.

Here, the liquid refrigerant introduced into the case 64 from the evaporator 58 through the inlet pipe 62 is vaporized by absorbing vaporization heat from the surroundings, when the liquid refrigerant absorbs excess vaporization heat and boils, Since it is generated, a noise reduction member 70 for reducing such noise is embedded.

The noise reduction member 70 is formed in a form having a porosity so that the noise is absorbed by friction, resistance, vibration, etc. by forming a plurality of air layers therein, and a plurality of noise reduction members 70 are embedded in the lower side of the case 64.

In particular, the noise reduction member 70 is made of a porous metal such as a sintered metal alloy, hard chromium plating, etc. in a round ring shape having a hole formed in the center as shown in FIG. 3.

In addition, the noise reduction member 70 may be used as a porous material such as sponge or foamed styrene as well as a porous metal.

Looking at the operation of the present invention configured as described above are as follows.

The refrigerant compressed at a high temperature and high pressure through the compressor 52 has a very high concentration of refrigerant molecules, thereby liquefying by releasing heat of condensation at room temperature as it passes through the condenser 54, and the high pressure liquid refrigerant passing through the condenser 54. The pressure is reduced by passing through the narrow expansion valve 56 to facilitate evaporation at a relatively high temperature, and the low temperature and low pressure liquid refrigerant passing through the expansion valve 56 absorbs heat of vaporization from the surroundings while passing through the evaporator 58. Gas refrigerant.

At this time, if the load of the refrigeration cycle is rapidly changed, the liquid refrigerant passing through the evaporator 58 is not all vaporized, and some remain and flow into the case 64 through the inlet pipe 62 of the accumulator 60 together with the gas refrigerant. Part of the liquid refrigerant introduced into the case 64 absorbs heat of vaporization from the surroundings inside the case 64 to change into a gas refrigerant and flows into the compressor 62 through the outlet pipe 66.

Here, while the liquid refrigerant vaporizes when the liquid refrigerant absorbs excessive heat of vaporization, the liquid refrigerant is boiled, but a noise reducing member is inherent therein to reduce the noise by reducing the boiling flow of the gas when the liquid refrigerant is boiling.

The accumulator of the refrigeration cycle according to the present invention configured as described above is a liquid refrigerant vaporized inside the accumulator in order to prevent a portion of the liquid refrigerant that has not been vaporized while passing through the evaporator to the compressor, wherein the liquid refrigerant is excessive heat When absorbed and boiled, since the noise reduction member of the porous material is embedded in the case of the accumulator, there is an advantage of reducing the noise caused by boiling of the liquid refrigerant by lowering the boiling flow.

Claims (3)

An evaporator mounted inside the outer case to cool the freezer compartment and the refrigerating compartment, a compressor for compressing the refrigerant flowing out of the evaporator at high temperature and high pressure, and a compressor installed in the evaporator and the inlet pipe between the compressor to prevent the liquid refrigerant from being evaporated in the evaporator. In the refrigeration cycle comprising an accumulator to separate and prevent the liquid refrigerant from flowing into the compressor, The accumulator is an accumulator of a refrigeration cycle, characterized in that the noise reduction member for reducing the noise generated when the liquid refrigerant introduced into the vaporization. The method of claim 1, The noise reduction member is built in the lower side of the accumulator accumulator of the refrigeration cycle, characterized in that formed in the form having a porosity so that the noise is absorbed by friction or resistance vibration by forming a plurality of air layers therein. The method of claim 2, The noise reduction member is an accumulator of a refrigeration cycle, characterized in that the porous metal formed in a round ring.