KR200164354Y1 - Refrigerating cycle for reducing noise in refrigerator - Google Patents

Abstract

The present invention relates to a refrigeration cycle for reducing the noise of a refrigerator, comprising: a compressor for converting a low-temperature low-pressure gas refrigerant into a high-temperature high-pressure gas refrigerant, and a high-temperature-high-pressure gas refrigerant changed into a liquid refrigerant at room temperature and high pressure. A condenser, a dryer for dehumidifying the liquid refrigerant at room temperature and high pressure passing through the condenser, a capillary tube for converting the liquid refrigerant at room temperature and high pressure dehumidified through the dryer into a liquid refrigerant at low temperature and low pressure, and a low temperature and low pressure liquid changed in the capillary tube. An evaporator that absorbs external heat while changing the refrigerant into a gaseous state, an accumulator that blocks un-vaporized liquid refrigerant from entering the compressor, and a suction pipe connecting the accumulator and the compressor in a confined space are alternately connected. To the inner peripheral surface of the silencer housing and the sealed space of the silencer housing According to the present invention, the refrigerant passing through the accumulator is maintained at the same speed while passing through the housing sealed space of the silencer, and the high frequency noise is canceled through the resonance absorption of the sound absorbing member. It is possible to provide a pleasant environment by reducing the overall noise.

Description

Refrigeration cycle for reducing noise in refrigerator

The present invention relates to a refrigeration cycle of a refrigerator, and more particularly to a refrigeration cycle for reducing the noise of the refrigerator to effectively reduce the refrigerant fluid noise to reduce the noise of the entire refrigerator to provide a comfortable environment.

In general, a refrigerator employs a refrigeration cycle shown in FIG. 1 to provide cold air for refrigeration and freezing.

As shown in the refrigerator, the refrigeration cycle 101 of the refrigerator discharges heat from the high-temperature refrigerant by the compressor 103 for compressing the low-temperature low-pressure refrigerant, and the heat radiation pipes 105, 107, 109, and then liquefies it. Low heat source using the condenser 111 to expand, the expansion valve 115 for expanding the refrigerant flowing through the dryer 113 to a low pressure state, and the refrigerant introduced from the expansion valve 115 through the accumulator 117. It consists of an evaporator 119 to absorb heat from.

The refrigeration cycle 101 of the refrigerator configured as described above will be briefly described. First, in the compressor 103, a refrigerant such as a freon gas is compressed to a state of high temperature and high pressure and supplied to the auxiliary heat dissipation pipe 105. At this time, since the auxiliary heat dissipation pipe 105 is usually installed at the lower end of the refrigerator, the defrosted water from the evaporator 119 is evaporated to a high temperature of about 75 ° C. transmitted from the compressor 103. In this process, the high-temperature refrigerant is deprived of the heat required to evaporate the defrosted water and thus has a secondary effect of cooling to a certain level.

Next, the refrigerant passing through the auxiliary heat dissipation pipe 105 passes through the hot pipe 107. The hot pipe 107 is generally installed in the door side cabinet of the refrigerator so as to pass through the front part. The dew condensation phenomenon caused by the temperature difference between the inside of the refrigerator and the outside temperature is prevented. In this case, the refrigerant, which loses a certain amount of heat to evaporate the generated water drops, is cooled once again.

In this way, the refrigerant via the hot pipe 107 is sufficiently cooled through the thick plate pipe 109 and the condenser 111, becomes a liquefied state, and is then supplied to the dryer 113. At this time, the dryer 113 passes through the condenser 111 and serves to completely remove moisture remaining in the coolant that is generated in the coolant cooled from the high temperature state to the low temperature state. This is to prevent the cooling efficiency from being significantly lowered by the heat exchange coefficient difference between the refrigerant and water when heat is supplied to the evaporator 119 as it is.

The low temperature and high pressure refrigerant from which water is removed while passing through the dryer 113 flows into the expansion valve 115 having a capillary shape. In the expansion valve 115, the refrigerant is rapidly adiabaticly expanded from high pressure to low pressure to a low temperature low pressure state, and the temperature is reduced to about -30 ° C.

The liquid refrigerant, which is in a low temperature and low pressure state by the expansion valve 115, is rapidly evaporated in the evaporator 119 to deprive the temperature of the surrounding air to generate cold air supplied to the freezer compartment and the refrigerating compartment. At this time, the liquid refrigerant that is not sufficiently vaporized in the evaporator 119 is separated into the accumulator 117, so that only the pure liquid refrigerant is supplied to the compressor 103.

However, in the refrigerating cycle 101 of the refrigerator as described above, the refrigerant gas sucked into the compressor 103 via the accumulator 117 generates a fluid vibration while the flow is accelerated by the pressure difference, the fluid vibration is There is a problem that causes high frequency noise by resonance.

In particular, the high frequency noise of the refrigerant not only increases the noise of the refrigerator, but also causes people to irritate their ears to an unpleasant degree.

Therefore, the present invention has been devised in view of the above problems, and installs a silencer capable of suppressing the flow noise of the refrigerant passing through the accumulator to effectively reduce the refrigerant fluid noise, thereby reducing the noise of the entire refrigerator to achieve a pleasant environment. The purpose is to provide a refrigeration cycle for reducing the noise of the refrigerator.

1 is a schematic configuration diagram showing a refrigeration cycle of a typical refrigerator.

Figure 2 is a schematic diagram showing a refrigeration cycle for reducing the noise of the refrigerator according to an embodiment of the present invention.

3 is a cross-sectional view showing a silencer of the refrigeration cycle shown in FIG.

4 is a cross-sectional view taken along the line A-A of FIG.

Explanation of symbols on the main parts of the drawings

3: compressor 17: accumulator

18: suction pipe 20: silencer

21: silencer housing 22: sealed space

23: sound absorbing member 24: uneven portion

The present invention for achieving the above object is a compressor for converting a low-temperature low-pressure gas refrigerant into a high-temperature high-pressure gas refrigerant, and a condenser for changing the high-temperature and high-pressure gas refrigerant in the compressor into a liquid refrigerant of room temperature and high pressure, A dryer for dehumidifying the liquid refrigerant at room temperature and high pressure through a condenser, a capillary tube for converting the liquid refrigerant at room temperature and high pressure dehumidified through the dryer into a liquid refrigerant at low temperature and low pressure, and the low temperature and low pressure liquid refrigerant changed in the capillary in a gaseous state. An evaporator that absorbs external heat while changing to an accumulator, an accumulator that blocks the microvaporized liquid refrigerant from entering the compressor, a silencer housing that connects the suction pipe connecting the accumulator and the compressor in a confined space, and The sound absorbing member is attached to the inner circumferential surface of the sealed space of the silencer housing. There is a feature of providing a refrigeration cycle of a refrigerator comprising a muffler.

In addition, the silencer housing has a structure in which two cones are combined to form a rhombic cone shape, and one end of the silencer housing is coupled to one end of the suction pipe extending to the stop of the sealed space, and the other end of the silencer housing is displaced from one end of the suction pipe. It is characterized in that the other end of the suction pipe positioned up to the end of the space is coupled.

The sound absorbing member has a feature of forming a multi-stage uneven portion in the longitudinal direction in which the suction pipe extends.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

Figure 2 shows a refrigeration cycle (1) for reducing the noise of the refrigerator according to an embodiment of the present invention. This refrigeration cycle (1) has the same basic configuration as the conventional refrigeration cycle except for the noise reduction structure. The refrigeration cycle (1) uses a compressor (3) for compressing a low-temperature low-pressure refrigerant and a high temperature by a heat radiation pipe (5) (7) (9). Condenser 11 for releasing and then liquefying heat from the refrigerant, an expansion valve 15 for expanding the refrigerant flowing through the dryer 13 to a low pressure state, and the accumulator 17 from the expansion valve 15. It consists of an evaporator 19 that absorbs heat from a low heat source using the refrigerant introduced therethrough, and on the suction pipe 18 connecting the accumulator 17 and the compressor 3, the flow of the refrigerant gas is made constant. A silencer 20 for resonance absorption is mounted.

As shown in FIGS. 3 and 4, the silencer 20 includes a silencer housing 21 for connecting the suction pipes 18 to each other in the sealed space 22 and a closed space of the silencer housing 21. 22) It is composed of a sound absorbing member 23 attached to the inner peripheral surface to cancel the high frequency noise.

In addition, the silencer housing 21 has a structure in which two cones are combined to form a rhombic cone, and one end 18a of the suction pipe 18 extending to one end of the sealed space 22 is coupled to one end thereof. The other end of the suction pipe 18 is coupled to the other end 18b of the suction pipe 18 which is located up to the discontinuity of the sealed space 22 to be displaced from the one end 18a of the suction pipe 18. That is, one end 18a and the other end 18b of the suction pipe 18 separated from each other are connected to each other by the sealed space 22 of the silencer housing 21, and the suction pipe 18 located in the sealed space 22. One end 18a of) is formed in a multi-stage curved structure.

The sound absorbing member 23 has a structure in which the multi-stage uneven portion 24 is formed in the longitudinal direction and the circumferential direction in which the suction pipe 18 extends.

Referring to the operation of the refrigeration cycle (1) for reducing the noise of the refrigerator according to the embodiment of the present invention is configured as follows.

First, when the refrigeration cycle 1 of the refrigerator is operated, the compressor 3 compresses the refrigerant gas of low pressure to a high pressure and discharges it to the condenser 11 through the heat dissipation pipes 5, 7, 9. The condenser 11 condenses the refrigerant compressed to high pressure in the compressor 3 to phase change, and the refrigerant discharged from the condenser 11 passes through the expansion valve 15 while passing through the dryer 13 to saturate low pressure. The expanded refrigerant is passed through the evaporator 19, absorbs the heat of the surroundings, phase changes into a low pressure refrigerant gas, and is circulated to the compressor 3 via the accumulator 17 and the silencer 20. . At this time, the cold air heat-exchanged by the endothermic action of the evaporator 19 is circulated to the freezer compartment and the refrigerating compartment to achieve freezing and refrigeration of food.

In this process, the silencer 20 reduces the flow noise of the refrigerant gas flowing through the accumulator 17 to the compressor 3. That is, while passing through the accumulator 17, the refrigerant gas is introduced into the sealed space 22 of the silencer housing 21 through one end 18a of the suction pipe 18, and then again the other end 18b of the suction pipe 18. Since it flows to the compressor 3 through, the flow of the refrigerant gas is not accelerated and maintains the constant velocity so that the flow can be suppressed.

In addition, the refrigerant gas introduced into the closed space 22 of the muffler housing 21 comes into contact with the sound absorbing member 23 having the uneven portion 24. In this case, the uneven portion 24 of the sound absorbing member 23 is formed. Absorb the resonance of the repeatedly colliding refrigerant gas to cancel the high frequency noise.

As described above, the present invention provides a pleasant environment by reducing the noise of the entire refrigerator by allowing the refrigerant passing through the accumulator to be maintained at the same speed while passing through the housing sealed space of the silencer and canceling high frequency noise through resonance absorption of the sound absorbing member. You can do it.

Although the present invention has been shown and described with respect to particular embodiments, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the accompanying Utility Model Claims. Anyone who owns it can easily find out.

Claims (3)

A compressor (3) for converting a low-temperature low-pressure gas refrigerant into a high-temperature high-pressure gas refrigerant, a condenser (11) for converting the high-temperature, high-pressure gas refrigerant changed by the compressor (3) into a liquid refrigerant at room temperature and high pressure, and the condenser ( A dryer (13) for dehumidifying the liquid refrigerant of room temperature and high pressure passed through 11), an expansion valve (15) for converting the liquid refrigerant of room temperature and high pressure dehumidified through the dryer (13) into a liquid refrigerant of low temperature and low pressure, and The evaporator 19 which absorbs the external heat while changing the low temperature and low pressure liquid refrigerant changed in the expansion valve 15 into a gaseous state, and the microvaporized liquid refrigerant from the evaporator 19 does not flow into the compressor 3. In the refrigeration cycle (1) of the refrigerator composed of the accumulator (17) to cut off, The silencer housing 21 which connects the suction pipe 18 which connects the accumulator 17 and the compressor 3 to each other in the sealed space 22, and the inner peripheral surface of the sealed space 22 of the silencer housing 21 Refrigerating cycle of the refrigerator, characterized in that it comprises a silencer (20) consisting of a sound absorbing member (23) attached to. The silencer housing 21 has a structure in which two cones are combined to form a rhombic cone, and at one end thereof, one end of the suction pipe 18 extends to the stop of the sealed space 22. (18a) is coupled, the other end is coupled to the other end (18b) of the suction pipe 18 which is located up to the interruption of the closed space 22 to deviate from one end (18a) of the suction pipe (18) Refrigeration cycle of the refrigerator. The refrigeration cycle of the refrigerator according to claim 1, wherein the sound absorbing member (23) has a structure in which the uneven portion (24) is formed in the longitudinal direction in which the suction pipe (18) extends.