KR20140126644A - Silent outdoor heat exchange unit - Google Patents

Abstract

The present invention relates to a silent outdoor unit for a thermo-hygrostat which comprises a blower and an outdoor heat exchanger in a housing, wherein in the housing, the air, which is to exchange heat with a refrigerant in the outdoor heat exchanger, is sucked in through an air suction grill and ejected through an air ejecting grill by the blower. The air suction grill and the air ejecting grill are characterized in including: a first sound blocking plate, on which a plurality of through holes for air flows, a sound absorbing member, which is coupled with a rear surface of the first sound blocking plate and has through holes communicating with the through holes on the first sound blocking plate, and a second sound blocking plate, which is coupled with a rear surface of the sound absorbing member and has through holes communicating with the through holes on the sound absorbing member.

Description

{SILENT OUTDOOR HEAT EXCHANGE UNIT}

The present invention relates to a silent outdoor unit for a thermo-hygrostat, and more particularly, to a silent outdoor unit capable of minimizing the outdoor noise of a thermo-hygrostat installed outdoors.

The room where the thermo-hygrostat is installed is mainly a room equipped with equipment or system that generates a lot of heat such as an inspection room, a computer room, a precision measuring room, an engine laboratory, a clean room of a semiconductor factory, and an electronic board production room. In a thermo-hygrostat, a refrigeration cycle is used for cooling operation and dehumidification operation. The refrigeration cycle has a very large capacity because of the heat generated from these devices. In recent years, since the heating of the thermo-hygrostat is performed by the heat pump using the refrigeration cycle, the thermo-hygrostat is operated throughout the year. In this case, the indoor unit is installed inside the room, and the outdoor unit is installed outside the building. In the outdoor unit installed outside the building, a motor-driven blower for forming an air flow inside the room for heat exchange between the air and the refrigerant, A compressor is provided, and noise generated in the fan and the compressor is very large. In addition, in the outdoor unit, the flow noise of the refrigerant generated in the piping connecting the outdoor heat exchanger, the compressor, and the receiver greatly increases. In recent years, environmental regulations for noise (maximum noise level 65dB that can be emitted from outside the hospital in the daytime) have become strict, and since it has become a cause of complaints for residents living in the vicinity of hospitals and the like, It is necessary to install a separate sound barrier around the outdoor unit.

BACKGROUND ART [0002] Conventionally, there have been various proposals for preventing noise generated in an outdoor unit of an air conditioner. Examples include the Korean Registered Utility Model Registration No. 0115207, the Korean Registered Utility Model Registration No. 0132997, the Korean Registered Utility Model Registration No. 0125623, the Korean Registered Utility Model Registration No. 20-0154185, the Korean Registered Utility Model Bulletin Registration No. 20-0154189, Korean Utility Model Publication No. 1999-006003, Korean Registered Patent Publication No. 10-0288872, Korean Registered Patent Publication No. 10-0357107, Korean Registered Patent Publication No. 10-0382483, registered in Korea Patent Publication No. 10-0432694, Publication No. 10-2004-0044683, and Registration No. 10-0749656.

The Korean Registered Utility Model Registration No. 0115207 discloses a configuration in which a container is provided around a compressor to dampen the noise and vibration generated in the compressor and a sound absorbing material is filled between the compressor and the container. No. 0132997 discloses a configuration in which a compressor is enclosed by inner and outer tubes and a sound absorbing material. Korean Registered Utility Model Registration Number 0125623 discloses a structure in which a blocking wall for blocking heat and noise from the outer circumference of a compressor, a sound absorbing material for absorbing noise, And the Korean Registered Utility Model Registration No. 20-0154185 discloses a structure for preventing noise from being transmitted to the outside from the compressor by means of an internal noise absorbing material which firstly absorbs noise from the compressor and a noise which passes through the internal sound absorbing material A sound insulating material to be cut off, and an outer sound absorbing material which secondarily absorbs noise transmitted to the outside through the sound insulating material The Korean Registered Utility Model Registration No. 20-0154189 discloses a noise preventing member composed of a superimposed triple structure. The Korean Registered Utility Model Registration No. 20-0154189 discloses a first sound absorbing material surrounded by a compressor with a noise preventing device of a compressor, And a second sound insulating material superimposed on the first sound insulating material to absorb noise around the first sound insulating material and a second sound insulating material superimposed on the second sound absorbing material to block the noise around the first sound insulating material Korean Patent Registration No. 10-0288872 discloses an integrated type seat in which an upper portion and a side surface of a compressor are simultaneously in contact with each other to reduce noise generated in a compressor to reduce noise generated in an upper space of the compressor, And a bottom sheet contacting and contacting the lower portion of the compressor. Korean Patent Registration No. 10-0357107 discloses a soundproofing material comprising a lateral compression Discloses an outdoor unit of an air conditioner composed of a sound absorbing material which is installed in a certain range around the periphery of a compressor and a sound absorbing material which is installed on an inner wall of the casing. Korean Patent Registration No. 10-0382483 discloses a heat exchanger A partition wall for separating a space in which the fan is installed and a space in which the compressor is installed is provided, the partition wall is formed so as to shield only a part of the compressor in the casing, a sound insulating material is attached to a surface of the partition wall facing the compressor, And a soundproofing material is installed at a location where the compressor is installed on the inner side of the compartment. Korean Patent Registration No. 10-0432694 discloses a soundproof structure of an outdoor unit of an air conditioner, in which an enclosed soundproofing member And by reducing the air density between the enclosed sound-proofing member and the compressor to make it vacuum, Open No. 10-2004-0044683 discloses a structure for inserting a sound insulating cap for reducing the flow noise of a refrigerant in a bent portion of a refrigerant pipe in order to reduce refrigerant flow noise in an outdoor unit of an air conditioner No. 10-0749656 discloses a low noise type outdoor unit having a first sound absorbing material for absorbing noise generated in a compressor and a cover for protecting a compressor and a first sound absorbing material in order to reduce noise generated in a compressor of an outdoor unit. .

These prior arts disclose means for shutting off the noise of the compressor except for the registered patent publication No. 10-0749656, and Registration No. 10-0749656 discloses means for blocking the refrigerant flow noise of the refrigerant pipeline . However, as described above, the noise generated from the motor-driven blower, which forms the air flow inside, is very large for heat exchange between the air and the refrigerant. The noise generated in the compressor, the blower, and the refrigerant pipe is transmitted to the outside through the air intake grill and the air exhaust grill, which are air passages for heat exchange of the outdoor heat exchanger formed in the housing (case) of the outdoor unit. Therefore, it is difficult to lower the generated noises of the thermo-hygrostats installed outside the room to below the noise standard defined by the environmental regulation by using only the noise reduction means described in these prior arts.

1. Korean Registered Utility Model Registration No. 0115207 2. Korean Registered Utility Model Registration No. 0132997 3. Korea registered utility model registration number room 0125623 4. Korean Registered Utility Model Registration No. 20-0154185 5. Korean Registered Utility Model Registration No. 20-0154189 6. Korean Patent Registration No. 10-0288872 7. Korean Patent Registration No. 10-0357107 8. Korean Patent Registration No. 10-0382483 9. Korean Patent Registration No. 10-0432694 10. Published Patent Publication No. 10-2004-0044683 11. Patent Registration No. 10-0749656

A first object of the present invention is to provide an air conditioner which is capable of minimizing the noise transmitted from the inside of the outdoor unit housing to the outside through the air passage, And to provide a silent outdoor unit for a thermo-hygrostat.

A second problem to be solved by the present invention is to provide a silent outdoor unit for a constant temperature and humidity air conditioner capable of reducing not only the noise generated from the compressor and the refrigerant pipe but also the noise generated from the blower.

A first object of the present invention is to provide a refrigerator having an air blower and an outdoor heat exchanger in a housing, the air to be heat-exchanged with a refrigerant in the outdoor heat exchanger by the blower is sucked through an air suction grille, Wherein the air suction grille and the air discharge grille are connected to a first sound insulating plate having a plurality of holes for air communication and a second sound insulating plate coupled to the back surface of the first sound insulating plate and connected to the through holes of the first sound insulating plate And a second sound insulating plate formed on the back surface of the sound absorbing material and having a through hole continuous to the through hole of the sound absorbing material.

The first problem of the present invention described above can be solved more effectively by vertically standing up the outdoor heat exchanger and bringing it into close contact with the inside of the air intake grill.

A second object of the present invention is to provide an air conditioner for a vehicle which has a motor attached to a ceiling of the housing and a blower for blowing air passing through the air intake grill and the outdoor heat exchanger, And a sound absorbing material attached to the inner wall of the sound insulating case through a cylindrical sound insulation is provided on the outer side of the motor and the silo fan so that the air propelled by the silo fan is collided with the sound absorbing material before being discharged to the air discharge grille .

According to the structure of the present invention described above, most noise is absorbed or blocked in the air intake grill and the air exhaust grill, which are external outflow paths of noise generated in the compressor, the refrigerant pipe, and the blower inside the outdoor unit housing, And the outside noise of the outdoor unit can be minimized because it is blocked or absorbed by the sound absorbing material on the inner surface of the case and the sound insulating case.

FIG. 1 is a configuration diagram of a silent outdoor unit for a thermo-hygrostat according to the present invention.
2 is an exploded perspective view of the air intake grill of the outdoor unit shown in FIG.
3 is an assembled perspective view of the air intake grill of the outdoor unit shown in FIG.

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

The present invention is characterized in that the blower 37 and the outdoor heat exchangers 7a and 7b are provided in the housing 1 and the blower 37 is connected to the outdoor heat exchangers 7a and 7b, To the outdoor unit for the thermostat and the air conditioner for sucking air to be sucked through the air suction grilles (3a, 3b) and then discharging the air through the air discharge grille (5).

1, the silent outdoor unit according to the present invention is hermetically sealed by the housing 1 except for the through holes formed in the air intake grilles 3a and 3b and the air discharge grill 5, A compressor 17, a refrigerant pipe (not shown), a receiver 19, outdoor heat exchangers 7a and 7b, and a blower 37 are provided in the refrigeration unit 1. The present invention is intended to prevent leakage of noise generated in the compressor (17), the refrigerant pipe, and the blower (37) out of these components.

1, the interior of the housing 1 is divided into a blower chamber 31 at the uppermost position by a partition 29 and a heat exchange chamber 9 at the lower portion of the blower chamber 31, (9) and a compressor chamber (27) below the heat exchange chamber (9). A blower 37 is installed in the blower chamber 31 and outdoor heat exchangers 7a and 7b are installed in the heat exchange chamber 9. The compressor 17 and the receiver 19 ), And other refrigeration components. The compressor (17), the receiver (19), etc. may be installed on the bottom shield (21). A drain pipe (13) is connected to the drain pan (11), and a drain (15) for discharging condensed water to the outside is formed at the end of the drain pipe (13).

The noise reducing means of the silent outdoor unit according to the present invention is provided in both the blower 31, the heat exchange chamber 9 and the compressor chamber 27. The drain pan 11 and the bottom shield plate 21 serve to prevent noise generated in the compressor chamber 27 from being discharged to the outside. The space through which air can pass from the compressor chamber 27 to the heat exchange chamber 9 is blocked and only the refrigerant pipe is connected. 1, the sound insulating material 23 and the suction material 25 may be sequentially attached to the inner wall of the compressor chamber 27 to further increase the noise reduction effect.

2 and 3, one of the features of the present invention is that the air intake grille 3a and 3b and the air exhaust grill 5 are connected to a first sound insulating plate 5 having a plurality of air holes 10a for air communication, A sound absorbing material 6 coupled to the back surface of the first sound insulating plate 8a and having a through hole 10b continuous to the through hole 10a of the first sound insulating plate 8a, And a second sound insulating plate (8b) having a through hole (10c) continuous with the through hole (910b) of the sound absorbing material (6). As the sound insulating plates 8a and 8b, a rubber plate is most preferable, but it is not necessarily limited thereto, and other substitute materials can be used. As the sound absorbing material 6, a sponge is most preferable, but there is no need to be limited thereto, and other substitute materials can be used. Most of the noise generated in the outdoor unit is transmitted to the outside through the air as a medium. By providing the sound absorbing material 6 and the sound insulating plates 8a and 8b in the moving path of the air, the noise transmitted to the outside can be greatly reduced .

1, in another aspect of the present invention, when the outdoor heat exchangers 7a and 7b are installed in the heat exchange room 9, the outdoor heat exchangers 7a and 7b are vertically erected, So that the outdoor heat exchangers 7a and 7b can also provide sound insulation by being in close contact with the inside of the grilles 3a and 3b. Generally, the fin coil heat exchanger used as the outdoor heat exchangers (7a, 7b) in the refrigeration cycle has very finely stacked fins, and when the refrigerant is brought into close contact with the air intake grilles (3a, 3b), the sound insulation effect is great.

As shown in FIG. 1, another feature of the present invention is to reduce the noise of the blower. The blower 37 of the present invention includes a motor 35 mounted on the ceiling of the housing 1 and a fan motor 37 driven by the motor 35 to drive the air intake grilles 3a and 3b and the outdoor heat exchangers 7a and 7b And a silo fan 33 for sucking the air having passed through the motor 35 and the silo fan 33. The cylindrical sound insulation case 43 and the sound insulation case 43 are arranged outside the motor 35 and the silo fan 33, A sound absorbing material 45 adhered to the inner wall of the air discharge grille 5 is provided so that the air which is impinged on the sound absorbing material 45 before the air propelled by the silo fan 33 is discharged to the air discharge grill 5, It has been made to attenuate.

According to such a structure, the present invention is characterized in that the air intake grilles 3a and 3b and the air discharge grill 5, which are external outflow paths of noise generated in the compressor 17, the refrigerant pipe, and the blower 37 in the outdoor unit housing, Most of the noise is absorbed or blocked and the remaining noise is blocked or absorbed by the sound-insulating barrel 43 and the sound-absorbing material 45 on the inner surface of the sound-insulating barrel, so that the external noise of the outdoor unit can be minimized .

1: housing 3a, 3b: air intake grill
5: air discharge grill 6: sound absorbing material
7a, 7b: outdoor heat exchanger 8a, 8b:
9: Heat exchange chambers 10a, 10b, 10c: Through holes
11: drain pan 13: drain pipe
15: drain 17: compressor
19: receiver unit 21: bottom shield plate
23: sound insulating material 25: sound absorbing material
27: Compressor chamber 29:
31: blower chamber 33: silo fan
35: motor 37: blower
39: intake port

Claims (3)

The indoor unit includes a blower and an outdoor heat exchanger, and the housing is provided with a blower for sucking air to be heat-exchanged with the refrigerant in the outdoor heat exchanger through an air suction grille, and discharging the air through an air discharge grille.
The air intake grill and the air exhaust grill may include a first sound insulating plate having a plurality of through holes for air communication, a sound absorbing material coupled to the back surface of the first sound insulating plate and having a through hole continuous to the through holes of the first sound insulating plate, And a second sound insulating plate joined to the first sound insulating member and having a through hole continuous to the through hole of the sound absorbing material.
The method according to claim 1,
Wherein the outdoor heat exchanger is vertically erected and brought into close contact with the inside of the air intake grille.
The method according to claim 1,
Wherein the blower comprises a motor attached to a ceiling of the housing and a silo fan which is driven by the motor and sucks the air passing through the air intake grill and the outdoor heat exchanger from below to propel it sideways, And a sound absorbing material adhered to the inner wall of the sound insulating case through a cylindrical soundproofing is provided on the outside of the coaxial fan so that the air propelled by the silo fan collides with the sound absorbing material before being discharged to the air discharge grille.

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