KR20010010605A - mechnical compartment of refrigerator having noise reducing structure - Google Patents

Abstract

PURPOSE: A machine room of a refrigerator is provided to attenuate a noise without deteriorating the refrigerator by maximally suppressing noise outflow and by smoothly discharging heat outside through many ventilating holes. CONSTITUTION: A machine room(1) of a refrigerator comprises a compressor(10), a condenser(20) and a cooling fan(30). The compressor compresses a high temperature and high pressure refrigerant and the condenser cools and liquefies the refrigerant. The cooling fan cools the compressor and the condenser near the outside of the compressor. Furthermore, the machine room installs noise ducts(40,50,60) around the compressor, the condenser and the cooling fan and many inlets(41,42,43,45,51,53,55,61) and outlets(45,47,49,57.63) are formed through the wall of each noise duct. Therefore, the machine room attenuates noise without deteriorating the refrigerator.

Description

Mechanical compartment of refrigerator having noise reducing structure

The present invention relates to a refrigerator machine room having a noise reduction structure, and more particularly, to equipment such as a compressor and a condenser installed in a machine room by shielding a refrigerator machine room, which is the main noise source of the refrigerator, in the form of a duct by a sound insulation plate. The present invention relates to a refrigerator machine room having a noise reduction structure capable of minimizing noise generated from these devices without compromising heat dissipation performance.

In general, a refrigerator employs a cooling system shown in FIG. 1 to make cold air necessary for refrigeration and freezing. The cooling system 101 includes a compressor 103 for compressing a low pressure refrigerant, a heat dissipation pipe ( Condenser 111 for releasing heat from the high temperature refrigerant and then liquefying by 105, 107, 109, expansion valve 115 for expanding the refrigerant flowing through the dryer 113 to a low pressure state, and accumulating water from the expansion valve 115; It consists of an evaporator 119 that absorbs heat from a low heat source using the refrigerant introduced through the radar 117.

The refrigeration cycle by the cooling system 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 brought into 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, since the liquid refrigerant that is not sufficiently vaporized in the evaporator 119 is separated into the accumulator 117, only the pure liquid refrigerant is supplied to the compressor 103.

As described above, the refrigerator configured to obtain cold air through the evaporator 119 includes a compressor 103 configured to compress the high temperature and high pressure refrigerant generating the cold air and a condenser 111 liquefying the refrigerant as shown in FIG. 2. Likewise, it is mounted in the machine room 121 located at the lower rear of the refrigerator.

2, the cooling fan 123 for dissipating heat generated from the compressor 103 and the condenser 111 in addition to the compressor 103 and the condenser 111, as illustrated in FIG. 2. ) And a motor 125 for driving the cooling fan 123 are installed at a position adjacent to the compressor 103, and all of these devices are mounted to the bottom frame 127 by fastening means such as bolts 129 and the like. . The machine room 121 is also surrounded by a bottom frame, a side, and a rear surface by the bottom frame 127, the cabinet 131 of the refrigerator, and the front and rear plates 133 and 135, and the upper surface is sealed by a separate cover plate (not shown). have.

Thus, as shown in FIG. 3, the refrigerator machine room 121 may generate noise generated by the compressor 103, the cooling fan 123, and the cooling fan driving motor 125, as well as the front and rear plates 133 and 135 and the cover plate. In particular, a large amount of noise during operation of the refrigerator because it exits to the outside as indicated by the arrow through the air distribution hole 137 formed through the front plate 133 so as to flow in and out the outside air by the blowing action of the cooling fan 123. I had a problem with this.

In addition, the cooling fan 123 provided between the compressor 103 and the condenser 111 blows air from the condenser 111 side to the compressor 103 to blow the air from the compressor 103 and the condenser 111 at this time. ) Is cooled, and the air blown by the cooling fan 123 is introduced through the air distribution hole 137 formed in the front plate 133 and passes through the condenser 111 and the compressor 103 again. Since the air is discharged to the outside through the air distribution hole 137 formed in the front plate 133 of the condenser 111 and the compressor 103 because the air flow is hardly made in the far place from the air distribution hole 137 ), There was a problem that smooth and uniform cooling can not be expected, and as a result, the cooling performance of the condenser 111 and the compressor 103 is lowered, thereby lowering the heat exchange efficiency of the cooling system. Additional due to poor performance Thereby causing the problem that the power ratio increases.

In addition, in order to reduce the noise generated in the machine room, noise blocking means for preventing the noise generated from the compressor from being transmitted to the front of the refrigerator as disclosed in Korean Utility Model Publication Nos. 94-10660 and 93-9292. Although proposed, these noise blocking means has a problem that it is difficult to block the noise throughout the machine room because only a part of the machine room to block the outside.

In addition, as disclosed in Korean Utility Model Publication No. 94-1588, a noise blocking member surrounding the outside of the machine room is provided to prevent noise from being transmitted to the outside, and at the same time, heat generated inside by the discharge port can be discharged to the outside. The machine room noise blocking device has been proposed, but in this case, the sound insulation effect by the noise blocking member is inferior because the air outlets and the through-holes provided at the outlets are arranged to keep the exhaust stream in a straight line. there was.

Accordingly, the present invention has been made to solve the problems of the conventional refrigerator machine room as mentioned above, the outer case of the refrigerator machine room installed compressor, condenser and their cooling fan, the loudest noise generated in the refrigerator By forming a plurality of vents through the appropriate position and connecting the vents with a separate duct, a plurality of vents penetrated to the wall of the outer case and the noise duct while suppressing the noise generated in the machine room from escaping to the outside of the refrigerator. The purpose of the present invention is to minimize the noise generated by the refrigerator without causing any deterioration in the performance of the refrigerator due to heat generation so that heat generated from a device such as a compressor through the pores can be smoothly discharged to the outside.

1 is a schematic view showing a conventional refrigerator cooling system.

Figure 2 is a plan view showing a conventional refrigerator machine room.

3 is a schematic plan view of FIG. 2;

4 is a schematic perspective view of a noise reduction structure according to an embodiment of the present invention.

5 is a graph showing a change in sound pressure according to the frequency of the machine room shown in FIG.

6 is a graph showing a change in sound pressure according to the frequency of the machine room according to the present invention.

Explanation of symbols on the main parts of the drawings

1: refrigerator machine room 10: compressor

20: condenser 30: cooling fan

35: sound insulation plate 37: cover plate

40: Main duct 41, 42, 43, 45, 51, 53, 55, 61: Intake vent

45,47,49,57,63: exhaust port 50: lower duct

60: front duct

In order to achieve the above object, the present invention provides a compressor including a compressor for compressing a high temperature and high pressure refrigerant, a condenser for cooling and liquefying a refrigerant supplied from the compressor, and a refrigerator having a cooling fan installed adjacent to the compressor to cool the compressor and the condenser. In the machine room, a noise machine is provided so as to surround a compressor, a condenser, a cooling fan, and the like, and a refrigerator machine room having a noise reduction structure in which a plurality of intake and exhaust holes are formed through the walls of each noise duct is provided.

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

As shown in FIG. 4, in the refrigerator machine room 1 having a noise reduction structure according to the present invention, a compressor 10 for compressing a high temperature and high pressure refrigerant, which is a component of a cooling system, as in a general refrigerator, and the compressor 10 Are provided with a condenser 20 for cooling and liquefying the refrigerant supplied from the cooling medium, and a cooling fan 30 provided adjacent to the compressor 10 to cool the compressor 10 and the condenser 20, respectively.

The noise duct, which is intended to enclose the various equipment inside the machine room 1, is composed of a main duct 40, a lower duct 50, and a front duct 60 as shown in FIG. 4. Compressor 10, condenser 20, cooling fan 30, etc. are installed in the main duct 40, and the lower duct 50 is installed at the lower end of the main duct 40 to form a base. The front duct 60 is attached to a portion of the front side of the lower duct 50.

Here, the main duct 40 is divided by a partition 25 placed horizontally in the center, and the partition 25 penetrates in a circular shape so as to install the cooling fan 30. In addition, the inlet openings 41 and 45 penetrate through the left and right bottom surfaces of the main duct 40 on the condenser 20 side, and the plurality of inlet openings 43 are arranged vertically through the left side of the rear wall. In addition, a plurality of intake holes 42 are penetrated to the left and right lower wall surfaces of the main duct 40 in the right and left direction. In addition, a plurality of exhaust ports 49 are arranged rearward and rearward on the right end side of the bottom surface of the compressor 10 divided by the partition 25 of the main duct 40. The exhaust ports 47 are penetrated in a state arranged in parallel.

The lower duct 50 attached to the lower side of the main duct 40 to have the same width as the main duct 40 is formed at the same height as the lower rectangular portion of the main duct 40, and the condenser of the lower duct 50 The inlet port 51 penetrates the left side surface of the (20) side, and the inlet port 53 and 55 which are arranged to the left and right side through the front surface. In addition, a plurality of exhaust ports 57 are arranged vertically, vertically, and horizontally through the compressor 10 side front surface of the lower duct 50.

The front duct 60 located in front of the lower duct 50 is divided by a partition 65 located at a third point in the longitudinal direction, and an inlet 61 is provided on the left side of the front duct 60. On the right bottom surface, the exhaust port 63 is arranged back and forth.

In addition, a sound insulation plate 35 is provided in front of the front duct 60, which is separated from the front surface of the front duct 60 by the same width as the longitudinal width of the front duct 60. Located at a distance, and has the same width and height as the transverse width and height of the lower duct 50, the upper surface is covered by a cover plate 37 extending from the bottom surface of the main duct 40.

Looking at the air flow of the refrigerator machine room according to the present invention configured as described above are as follows.

First, during the operation of the compressor 10 and the condenser 20, the cooling fan 30 installed inside the main duct 50 is operated to circulate the outdoor air to the indoor, the indoor air to the outdoor. . At this time, the outside air passing through the intake ports 42 and 43 directly flows into the main duct 40, and the outside air passing through the intake ports 51 and 53 passes through the lower duct 50 through the intake ports 41 and 45. Flows into the duct 40. In addition, the outside air introduced into the front duct 60 through the intake port 61 flows into the lower duct 50 through the intake port 55 and then flows into the main duct 40.

The outside air introduced in this way is cooled after passing through the diaphragm 25 to cool the compressor 10, and then discharged out of the machine room through the exhaust port 47 penetrated to the upper surface of the main duct 40, or the exhaust port. After passing through the exhaust port 57 of the lower duct 50 through the lower duct 50 through 40 is discharged out of the machine room through the exhaust port 63 of the front duct 60.

In this way, the air flows through the respective ducts 40, 50, and 60 surrounding the refrigerator machine room 1 to the exhaust port so that the air flow is very complicated. While maintaining the noise, the kinetic energy of the generated noise is reduced as much as possible to minimize the amount of noise leaking to the outside.

As described above, according to the refrigerator machine room of the noise reduction structure according to the present invention, the outside air circulation line into the inside of the machine room is smooth and stable by smoothly introducing the outside air by the noise structure consisting of the main duct, the lower duct, and the front duct. Even though the internal and external communication is possible for air circulation, the internal air stream is complicated, minimizing the sound wave energy of the generated noise and reducing the cooling power of the machine room. The inconvenience of the consumer can be eliminated.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (3)

A compressor 10 for compressing a high temperature and high pressure refrigerant, a condenser 20 for cooling and liquefying a refrigerant supplied from the compressor 10, and the compressor 10 for cooling the compressor 10 and the condenser 20. In the machine room 1 of a refrigerator having a cooling fan 30 installed adjacent to the outside, noise ducts 40, 50, and 60 so as to surround the compressor 10, the condenser 20, the cooling fan 30, and the like. And a plurality of air inlets (41, 42, 43, 45, 51, 53, 55, 61) and exhaust ports (45, 47, 49, 57, 63) on the wall of each of the noise ducts (40, 50, 60). Refrigerator machine room having a noise reduction structure characterized in that through). According to claim 1, wherein the noise duct (40, 50, 70) of the main duct 40, the main duct 40, the compressor 10, the condenser 20, the cooling fan 30, etc. are installed It is composed of a lower duct 50 installed on the bottom and a front duct 60 attached to a portion of the front side of the lower duct 50, the bottom surface of the condenser 20 side of the main duct 40 The compressor 10 which is divided by the partition 25 by the intake openings 41 and 45 in the left and right, the inlet openings 43 through the rear wall, and the inlet opening 42 in the left and right in the front lower end wall. A plurality of exhaust ports 49 pass through the front and back on the right bottom side of the bottom surface, and a plurality of exhaust ports 47 pass through the front, rear, left, and right sides of the bottom surface, and an intake port (left) on the left side of the condenser 20 side of the lower duct 50. 51 has a plurality of inlet ports 53 and 55 which are arranged to the left and right in the front face, and the upper and lower left in the front face of the compressor 10 side. A plurality of exhaust ports 57 are penetrated, and the front duct 60 is divided by a partition 65 so that the inlet port 61 is penetrated to the left side and the exhaust port 63 is penetrated to the bottom and right sides. Refrigerator machine room having a noise reduction structure characterized in that. According to claim 1, Front of the front duct 60, the sound insulation plate 35 having the same width as the transverse width of the lower duct 50 is maintained at a predetermined distance from the lower duct 50, the main A refrigerator machine room having a noise reduction structure, which is connected by a cover plate 37 extending from a bottom surface of the duct 40.