KR20000009512U - Refrigerator machine room with noise reduction structure - Google Patents

Abstract

The present invention is a refrigerator machine room having a machine room noise structure including a compressor for compressing a high temperature and high pressure refrigerant, a condenser for cooling and liquefying the refrigerant supplied from the compressor, and a cooling fan installed adjacent to the outside of the compressor to cool the compressor and the condenser. To, one side of the central duct in which the compressor, the condenser, the cooling fan is built, the intake noise duct is bent to guide the inside of the wires of the air sucked from the outside by the cooling fan is installed, the other side to the cooling fan Exhaust noise ducts are installed to bend the wires of the air sucked by the air, and according to the present invention, the intake noise ducts and the exhaust noise ducts are provided at both ends of the center duct to facilitate the inflow of outside air. Not only can the cold air circulation line inside the machine room be uniform and stable, May be substantially extinguished by a collision with a duct structure for the acoustic energy of the generated noise by a complicated wire inside air in a state in which communication between the internal and external to the circular group is escaping to the outside.

Description

Mechanical compartment of refrigerator having noise reducing structure

The present invention relates to a machine room of a refrigerator having a noise reduction structure, and more particularly, a heat dissipation performance of various heat generating equipment 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. It is a refrigerator machine room having a noise reduction structure designed to reduce noise generated from these equipments as much as possible while maintaining the same.

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.

Therefore, the present invention has been devised in view of the above-described conventional problems, so that the noise from the inside can be effectively extinguished without lowering the cooling performance of the compressor and the condenser by the cooling fan. Its purpose is to provide a machine room for refrigerators that can resolve complaints.

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

Figure 4 is a schematic perspective view showing a machine room of the noise reduction structure according to an embodiment of the present invention

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

6 is a cross-sectional view taken along the line B-B of FIG.

Explanation of symbols on the main parts of the drawings

1: machine room 3: compressor

5: condenser 7: cooling fan

10: center duct 11, 55: partition

12, 56: air vent 31: the first intake duct

33, 35, 43: intake vent 41: second intake duct

51: first exhaust duct 53, 59, 63, 65, 73, 75: exhaust port

61: second exhaust duct 71: third exhaust duct

The present invention for achieving the above object is a compressor for compressing a refrigerant of high temperature and high pressure, a condenser for cooling and liquefying the refrigerant supplied from the compressor, and a cooling fan installed adjacent to the compressor to cool the compressor and the condenser In the machine room of the refrigerator, an intake noise duct is provided on one side of the central duct in which the compressor, the condenser, and the cooling fan are built to bend and guide the inside of the air sucked from the outside by the cooling fan. The side is to provide a refrigerator machine room of the noise reduction structure in which the exhaust noise duct is installed to guide the outside by bending the streamline of air sucked by the cooling fan.

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

4, 5 and 6 as shown in the refrigerator machine room 1 of the noise reduction structure according to the embodiment of the present invention, inside the refrigerator machine room 1, as in the conventional refrigerator, some components of the cooling system A compressor (3) for compressing a high temperature and high pressure refrigerant, a condenser (5) for cooling and liquefying the refrigerant supplied from the compressor (3), and a compressor (3) for cooling the compressor (3) and the condenser (5). Cooling fans 7 and the like provided adjacent to each other are provided.

The duct structure surrounding the various equipment inside the machine room 1 has a cooling fan 7 on one side of the central duct 10 in which the compressor 3, the condenser 5, and the cooling fan 7 are installed. Intake noise duct 30 is provided to bend the guideline of the intake air to the inside, and the other side of the central duct 10 is bent to guide the outside by bending the streamline of air sucked by the cooling fan (7) Exhaust noise duct 50 is made of a structure that is installed.

In other words, the condenser 5, the cooling fan 7, and the compressor 3 are located in the center duct 10 from the side where the intake noise duct 30 is located to the exhaust noise duct 50. In addition, around the cooling fan 7 between the condenser 5 and the compressor 3, a partition 11 having a vent hole 12 open in the center is attached. At this time, the cooling fan 7 sucks air from the condenser 5 side and blows it toward the compressor 3.

On the other hand, the intake noise duct 30 is composed of the first intake duct 31 and the second intake duct 41, the first intake duct 31 is the front inlet 33 through the front end of the lower end from the upper end The plurality of side inlets 35 are formed on the side wall partitioned from the central duct 10 and communicated with the central duct 10 to the condenser 5. In addition, the second intake duct 41 has a lower surface inlet opening 43 through which air is introduced from the outside to the lower surface of the rear side of the condenser 5.

The exhaust noise duct 50 includes a first exhaust duct 51, a second exhaust duct 61, and a third exhaust duct 71. The first exhaust duct 51 is a compressor 3. It is located in the other direction of the cooling fan 7 in the upper portion of the upper portion of the compressor 3, the lower surface exhaust port 53 is formed through the communication with the central duct 10 on the lower surface of the compressor 3, the exhaust sound insulating plate on the front of the other end A front exhaust port 59 communicating with the outside is formed through the interlayer 55 having the 57 and the vent hole 56 therebetween.

The second exhaust duct 61 is located in front of the central duct 10 in the other direction in which the cooling fan 7 is positioned, and the side exhaust port 63 communicating with the central duct 10 is formed through the lower end of one side. The front exhaust port 65 communicates with the outside at the front surface thereof.

The third exhaust duct 71 is positioned to have a cross-sectional shape corresponding to an end of the central duct 10 in the other direction in which the cooling fan 7 is positioned, and the side exhaust port communicating with the central duct 10 on the inner side thereof. A 73 is formed through, and a front exhaust port 75 communicating with the outside is formed through.

Looking at the air flow and action of the refrigerator machine room (1) according to an embodiment of the present invention is configured as follows.

First, in the process of operating the compressor 3 and the condenser 5 of the cooling system, the cooling fan 7 installed inside the central duct is driven to generate a blowing force from the condenser 5 side to the compressor 3. do.

At this time, the outside air flows into the central duct 10 through the front air inlets 33 and 35 and the bottom air inlets 43 formed on the front and bottom surfaces of the first and second intake ducts 31 and 41. do. The air introduced into the central duct 10 is most applied to the condenser 5 to cool the condenser 5 and then to the cooling fan 7, and is cooled through the vent hole 12 of the partition 11. The compressor 3 is cooled by passing through the fan 7.

Thereafter, a part of the air passing through the compressor 3 flows into the first exhaust duct 51 through the lower surface exhaust port 53 formed at the upper portion of the compressor 3, and opens the vent hole 56 of the partition 55. Passing through the front exhaust port 59 formed on both sides of the front surface and separated again to the sound insulation plate 57, the final discharge to the outside. In addition, another part of the air passing through the compressor 3 is introduced into the second exhaust duct 61 through the side exhaust port 63 and finally discharged to the outside through the front exhaust port 65 formed on the upper front side. Then, the rest of the air passing through the compressor 3 is introduced into the third exhaust duct 71 through the side exhaust port 73 and finally discharged to the outside through the front exhaust port 75 formed on the front surface.

As such, the noise structure configured to cool the various heat generating equipment inside the central duct 10 surrounding the refrigerator machine room 1 has an intake noise duct 30 while maintaining a smooth flow of air according to the driving of the cooling fan 7. Since the streamline of air flowing into the center duct 10 through the bent angle is bent at a right angle, and the streamline of air passing from the center duct 10 to each exhaust noise duct 50 is bent at a right angle, the center duct ( 10) The noise generated from the inside is destroyed by hitting the wall surface and the sound insulation plate 57 of each duct, it is very difficult to escape to the outside.

As described above, the present invention is provided with an intake noise duct and an exhaust noise duct at both ends of the central duct in which the compressor, the condenser, and the cooling fan are installed to facilitate the inflow of outside air to provide a uniform and stable cold air circulation line inside the machine room. Not only can it be built, but also the internal and external communication for air circulation can be complicated by the internal air streamline so that the sound wave energy of the generated noise can be almost destroyed by the collision with the duct structure while it comes out.

As a result, it is possible to minimize the inconvenience of using the refrigerator due to noise while maintaining the cooling performance of the machine room, and there is no fear of lowering the cooling performance for noise reduction, thereby ultimately reducing the power consumption of the refrigerator. Will be.

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 (4)

A compressor (3) for compressing a high temperature and high pressure refrigerant, a condenser (5) for cooling and liquefying the refrigerant supplied from the compressor (3), and the compressor (3) for cooling the compressor (3) and the condenser (5). In the machine room of a refrigerator having a cooling fan (7) installed adjacent to the outside, the cooling fan (7) on one side of the central duct (10) in which the compressor (3), the condenser (5), the cooling fan (7) is built The intake noise duct 30 is bent to guide the inside of the air sucked from the outside by the air), and the other side of the exhaust air is bent by the cooling fan 7 to guide the outside. Refrigerator machine room of the noise reduction structure, characterized in that the noise duct 50 is installed. According to claim 1, wherein the central duct 10 is located in the order of the condenser (5), the cooling fan (7), the compressor (3) from the intake noise duct (30) to the exhaust noise duct (50). Refrigerator machine room of the noise reduction structure, characterized in that the diaphragm 11 with the vent hole 12 open in the center is attached around the cooling fan 7 between the condenser 5 and the compressor 3. . According to claim 1, The intake noise duct 30 has a front inlet 33 is formed through the front side and the side inlet 35 is in communication with the central duct 10 on the side wall partitioned with the central duct 10 Is formed through a first intake duct 31 formed therein, and a second intake duct 41 formed at one side end of the central duct 10 and having a lower intake port 43 communicating with the outside on a lower surface thereof. Refrigerator machine room with noise reduction structure. The lower surface exhaust vent of claim 1, wherein the exhaust noise duct 50 extends in the other direction of the cooling fan 7 at an upper portion of the compressor 3, and communicates with the central duct 10 at one side lower surface thereof. The first exhaust duct is formed through the 53 and the front end of the other end is passed through the front exhaust port 59 communicating with the outside, with the partition 55 formed with the exhaust sound insulating plate 57 and the ventilation hole 56 therebetween. 51 and a side exhaust port 63 which is located in the central duct 10 in the other direction in which the cooling fan 7 is located and communicates with the central duct 10 at one lower end portion thereof, is formed in the front surface thereof. The second exhaust duct 61 through which the front exhaust port 65 communicating with the outside is formed, and the cross section corresponding to the end of the central duct 10 in the other direction in which the cooling fan 7 is positioned The side exhaust port 73 is located in communication with the central duct 10 on the side and penetrates the outside And a third exhaust duct (71) through which the front exhaust port (75) communicates with the refrigerator.