EP1300635B1 - Noise reduction structure of outdoor unit of large-sized air conditioner - Google Patents
Noise reduction structure of outdoor unit of large-sized air conditioner Download PDFInfo
- Publication number
- EP1300635B1 EP1300635B1 EP02022121A EP02022121A EP1300635B1 EP 1300635 B1 EP1300635 B1 EP 1300635B1 EP 02022121 A EP02022121 A EP 02022121A EP 02022121 A EP02022121 A EP 02022121A EP 1300635 B1 EP1300635 B1 EP 1300635B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air conditioner
- outdoor unit
- noise
- reduction structure
- noise reduction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/46—Component arrangements in separate outdoor units
- F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
- F24F1/52—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with inlet and outlet arranged on the same side, e.g. for mounting in a wall opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
Definitions
- the present invention relates to an outdoor unit of a large-sized air conditioner provided with a constant-speed compressor and an inverter compressor installed therein, and more particularly to a noise reduction structure of the outdoor unit for the large-sized air conditioner in order to prevent noise generated from the inverter compressor from being transmitted to the outside.
- a large-sized air conditioner is an apparatus for maintaining a comfortable temperature, humidity, and the like of an indoor space.
- the large-sized air conditioner comprises an indoor unit and an outdoor unit.
- the indoor unit is arranged inside the room, and includes an indoor blower and an evaporator.
- the outdoor unit is arranged outside the room, and includes an outdoor blower, a condenser and a compressor.
- US-A-4,991,406 shows an air conditioner comprising a compressor which is accommodated in an outer casing of the air conditioner and wherein the compressor is surrounded by a sound-proof cover which is formed of a main body made of a sound absorbing material.
- Fig. 1 is an exploded perspective view of an outdoor unit of a conventional large-sized air conditioner.
- the outdoor unit of the conventional large-sized air conditioner comprises a case 8, an outdoor blast fan 10, a condenser 12, and a compression section 14.
- the case 8 comprises a front panel 2 provided with a heat discharging outlet 2a formed thereon, a back panel 4 provided with a heat absorbing inlet 4a formed thereon, and a base pan 6.
- the front and back panels 2 and 4 are arranged on the upper surface of the base pan 6.
- the outdoor blast fan 10 is installed inside the front panel 2 and serves to forcibly blow outdoor air.
- the condenser 12 is installed inside the back panel 4 and serves to exchange heat between the outdoor air forcibly-blown by the outdoor blast fan 10 and a refrigerant.
- the compression section 14 is arranged near the condenser 12 and serves to compress the refrigerant so as to control air-cooling capacity of the air conditioner, thereby circulating the refrigerant through a refrigerating cycle consisting of compression, condensation, expansion, and evaporation.
- the compression section 14 includes a constant-speed compressor 14a driven at constant speed, and an inverter compressor 14b driven at variable speed. Therefore, the compression section 14 changes its rotational speed according to the change of an input frequency and then controls flow rate of the refrigerant circulated through the refrigerant cycle, thereby variably changing the air-cooling capacity of the air conditioner.
- the rotational speed of the inverter compressor 14b is variably changed according to the air-cooling capacity change and then continuously driven, while the air conditioner operates. Only when a higher air-cooling capacity of the air conditioner is required, the constant-speed compressor 14a is driven.
- the inverter compressor 14b is rotated with a higher speed, thereby increasing the quantity of inflow and outflow of the refrigerant, and effectively controlling the air-cooling capacity of the air conditioner.
- a reference number 16 represents a motor mount fixedly installed on the condenser 12 so as to fix a motor for rotating the outdoor blast fan 10, and a reference number 18 represents a partition wall formed within the case 8, for dividing a space where the constant-speed and inverter compressors 14a and 14b are installed from a space where the condenser 12 is installed.
- the inverter compressor 14b is driven at a higher speed, thereby increasing the flow rate of the refrigerant circulated through the refrigerating cycle.
- the inverter compressor 14b when a signal requiring a much higher air-cooling capacity is inputted to the inverter compressor 14b, the inverter compressor 14b is overloaded. Then, the constant-speed compressor 14a as well as the inverter compressor 14a is driven, thereby further increasing the flow rate of the refrigerant circulated through the refrigerating cycle.
- the rotational speed of the inverter compressor 14b is variably changed according to the change of the input frequency, thereby generating noise due to the pulsation of pressure of the refrigerant and the structural vibration of the inverter compressor 64b.
- the inverter compressor 14b installed on the outdoor unit of the conventional large-sized air conditioner is not installed on a separate space in the manner of another inverter compressor installed on a refrigerator, but is installed on the space divided by the partition wall within the case 8. Therefore, the noise generated due to the driving of the inverter compressor 14b is easily transmitted to the outside.
- the present invention has been made in view of the above problems, and it is an object of the present invention to provide a noise reduction structure of an outdoor unit of a large-sized air conditioner so as to prevent noise generated by an inverter compressor installed on the outdoor unit of the air conditioner from being transmitted to the outside via a case of the outdoor unit.
- a noise reduction structure of an outdoor unit of a large-sized air conditioner comprising a compressor for compressing a refrigerant so as to circulate the refrigerant through a refrigerating cycle, wherein an anti-noise barrier provided with protrusions formed thereon surrounds the compressor so as to prevent noise generated from the compressor from being transmitted to the outside.
- Fig. 2 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with an embodiment of the present invention.
- Fig. 3 is a cross-sectional view taken along the line A-A of Fig. 2
- Fig. 4 is a cross-sectional view taken along the line B-B of Fig. 2 .
- Fig. 5 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with another embodiment of the present invention.
- Fig. 6 is a cross-sectional view taken along the line C-C of Fig. 5 .
- the noise reduction structure of the outdoor unit of the large-sized air conditioner of the present invention comprises a case 58, an outdoor blast fan 60, a condenser 62, a constant-speed compressor 64a, an inverter compressor 64b, and an anti-noise barrier 70.
- the case 58 comprises a front panel 52 provided with a heat discharging outlet 52a formed thereon, a back panel 54 provided with a heat absorbing inlet 54a formed thereon, and a base pan 56.
- the front and back panels 52 and 54 are arranged on the upper surface of the base pan 56.
- the outdoor blast fan 60 is installed inside the front panel 52 and serves to forcibly blow outdoor air.
- the condenser 62 is installed inside the back panel 54 and serves to exchange heat between the outdoor air forcibly blown by the outdoor blast fan 60 and a refrigerant.
- the constant-speed compressor 64a and the inverter compressor 64b are arranged near the condenser 62.
- the constant-speed compressor 64a is driven at constant speed and the inverter compressor 64b is driven at variable speed so as to compress the refrigerant and to control the flow rate of the refrigerant circulated through the refrigerating cycle according to the air-cooling capacity change.
- the anti-noise barrier 70 surrounds the inverter compressor 64b and is provided with a plurality of protrusions 72 or 74, thereby preventing noise generated from the inverter compressor 64b from being transmitted to the outside.
- the noise reduction structure of the outdoor unit of the large-sized air conditioner of the present invention further comprises a sound absorbing and insulating material (not shown) surrounding the constant-speed compressor 64a.
- the sound absorbing and insulating material is formed by stacking a sound-absorbing material (not shown) made of porous material such as non-woven fabric or foam aerosol, and a sound-insulating material (not shown) made of rubber or metal.
- the inverter compressor 64b changes its rotational speed depending on the air-cooling capacity and then is continuously driven while the air conditioner operates.
- the constant-speed inverter 64a as well as the inverter compressor 64b is driven.
- the rotational speed of the inverter compressor 64b is variably changed according to an input frequency, thereby generating comparatively much noise due to the pulsation of pressure of the refrigerant and the structural vibration of the inverter compressor 64b.
- noise generation characteristics of the inverter compressor 64b are determined.
- the protrusions 72 or 74 are formed on one outer side surface of the anti-noise barrier 70 at a position where the noise is most strongly generated.
- the noise generated from the inverter compressor 64b surrounded with the anti-noise barrier 70 is transmitted in the form of sound waves, the noise is not vertically incident on the anti-noise barrier 70 but is reflected into the inside of the anti-noise barrier 70 by the protrusions 72 and 74 formed on the outer side surface of the anti-noise barrier 70.
- a sound absorbing and insulating material 76 for absorbing the noise generated from the inverter compressor 64b is formed on the inner wall of the anti-noise barrier 70.
- the sound absorbing and insulating material 76 is formed on the whole inner wall of the anti-noise barrier 70 except for the area of the protrusions 72 and 74.
- the sound absorbing and insulating material 76 includes a sound-absorbing material 76a and a sound-insulating material 76b.
- the sound-absorbing material 76a is made of a porous material such as felt, fabric, or foam aerosol in which an air volume is very large relative to its total volume.
- the sound-insulating material 76b is made of rubber or metal and stacked on the sound-absorbing material 76a.
- each of the protrusions 72 formed on one outer side surface of the anti-noise barrier 70 is horizontally extended and has a semi-circular cross section.
- the protrusions 72 formed on the anti-noise barrier 70 are parallelly spaced from each other by a designated distance (h).
- each of other protrusions 74 formed on one outer side surface of the anti-noise barrier 70 is horizontally extended and has an arc-shaped cross section.
- the protrusions 74 formed on the anti-noise barrier 70 are parallelly spaced from each other by a designated distance (h).
- a ventilation hole 74a is formed on the bottom of the protrusions 74 of Fig. 6 , thereby emitting heat generated from the inverter compressor 64b to the outside.
- the top surface of the anti-noise barrier 70 is opened and the outdoor blast fan 60 is installed on the upper surface of the inverter compressor 64b, thereby effectively emitting the heat generated from the inverter compressor 64b to the outside.
- the inverter compressor 64b When power is applied, the inverter compressor 64b is driven. Since the rotational speed of the inverter compressor 64b is variably changed according to the air-cooling capacity change, the inverter compressor 64b controls the flow rate of the refrigerant circulated through the refrigerating cycle. As a result, noise is generated from the inverter compressor 64b.
- the noise generated from the inverter compressor 64b is partially absorbed or reduced by the sound absorbing and insulating material 76, and cut off from the outside by the anti-noise barrier 70 surrounding the inverter compressor 64b.
- the noise generated from the inverter compressor 64b is not vertically incident on the anti-noise barrier 70 but is obliquely incident on the anti-noise barrier 70 by the protrusions 72 and 74, the noise is then reflected into the inside of the anti-noise barrier 70, thereby not being transmitted to the outside.
- the heat generated from the inverter compressor 64b is emitted to the outside via the ventilation holes 74a formed on the protrusions 74 of the anti-noise barrier 70.
- the present invention provides a noise reduction structure of an outdoor unit of a large-sized air conditioner, in which an anti-noise barrier provided with protrusions formed thereon surrounds an inverter compressor, thereby preventing noise generated from the inverter compressor from being transmitted to the outside. Therefore, the noise generated from the inverter compressor is reflected into the inside of the anti-noise barrier by the protrusions, thereby reducing noise pollution and increasing performance of the air conditioner product.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Other Air-Conditioning Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
- The present invention relates to an outdoor unit of a large-sized air conditioner provided with a constant-speed compressor and an inverter compressor installed therein, and more particularly to a noise reduction structure of the outdoor unit for the large-sized air conditioner in order to prevent noise generated from the inverter compressor from being transmitted to the outside.
- Generally, a large-sized air conditioner is an apparatus for maintaining a comfortable temperature, humidity, and the like of an indoor space. The large-sized air conditioner comprises an indoor unit and an outdoor unit. The indoor unit is arranged inside the room, and includes an indoor blower and an evaporator. The outdoor unit is arranged outside the room, and includes an outdoor blower, a condenser and a compressor.
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US-A-4,991,406 shows an air conditioner comprising a compressor which is accommodated in an outer casing of the air conditioner and wherein the compressor is surrounded by a sound-proof cover which is formed of a main body made of a sound absorbing material. -
Fig. 1 is an exploded perspective view of an outdoor unit of a conventional large-sized air conditioner.
As shown inFig. 1 , the outdoor unit of the conventional large-sized air conditioner comprises acase 8, anoutdoor blast fan 10, acondenser 12, and acompression section 14. Thecase 8 comprises afront panel 2 provided with aheat discharging outlet 2a formed thereon, a back panel 4 provided with aheat absorbing inlet 4a formed thereon, and abase pan 6. The front andback panels 2 and 4 are arranged on the upper surface of thebase pan 6. Theoutdoor blast fan 10 is installed inside thefront panel 2 and serves to forcibly blow outdoor air. Thecondenser 12 is installed inside the back panel 4 and serves to exchange heat between the outdoor air forcibly-blown by theoutdoor blast fan 10 and a refrigerant. Thecompression section 14 is arranged near thecondenser 12 and serves to compress the refrigerant so as to control air-cooling capacity of the air conditioner, thereby circulating the refrigerant through a refrigerating cycle consisting of compression, condensation, expansion, and evaporation. - Herein, the
compression section 14 includes a constant-speed compressor 14a driven at constant speed, and aninverter compressor 14b driven at variable speed. Therefore, thecompression section 14 changes its rotational speed according to the change of an input frequency and then controls flow rate of the refrigerant circulated through the refrigerant cycle, thereby variably changing the air-cooling capacity of the air conditioner. - More particularly, the rotational speed of the
inverter compressor 14b is variably changed according to the air-cooling capacity change and then continuously driven, while the air conditioner operates. Only when a higher air-cooling capacity of the air conditioner is required, the constant-speed compressor 14a is driven. - Herein, as the input frequency is higher, the
inverter compressor 14b is rotated with a higher speed, thereby increasing the quantity of inflow and outflow of the refrigerant, and effectively controlling the air-cooling capacity of the air conditioner. - A
reference number 16 represents a motor mount fixedly installed on thecondenser 12 so as to fix a motor for rotating theoutdoor blast fan 10, and areference number 18 represents a partition wall formed within thecase 8, for dividing a space where the constant-speed andinverter compressors condenser 12 is installed. - Hereinafter, operation of the outdoor unit of the conventional air conditioner is described.
- Power is applied, and a signal requiring a comparatively low air-cooling capacity is inputted to the
inverter compressor 14b. Then, theinverter compressor 14b is driven at low speed, thereby decreasing the flow rate of the refrigerant circulated through the refrigerating cycle. - However, when a signal requiring a higher air-cooling capacity is inputted to the
inverter compressor 14b, theinverter compressor 14b is driven at a higher speed, thereby increasing the flow rate of the refrigerant circulated through the refrigerating cycle. - Further, when a signal requiring a much higher air-cooling capacity is inputted to the
inverter compressor 14b, theinverter compressor 14b is overloaded. Then, the constant-speed compressor 14a as well as theinverter compressor 14a is driven, thereby further increasing the flow rate of the refrigerant circulated through the refrigerating cycle. - However, in the aforementioned outdoor unit of the conventional large-sized air conditioner, the rotational speed of the
inverter compressor 14b is variably changed according to the change of the input frequency, thereby generating noise due to the pulsation of pressure of the refrigerant and the structural vibration of theinverter compressor 64b. - The
inverter compressor 14b installed on the outdoor unit of the conventional large-sized air conditioner is not installed on a separate space in the manner of another inverter compressor installed on a refrigerator, but is installed on the space divided by the partition wall within thecase 8. Therefore, the noise generated due to the driving of theinverter compressor 14b is easily transmitted to the outside. - Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a noise reduction structure of an outdoor unit of a large-sized air conditioner so as to prevent noise generated by an inverter compressor installed on the outdoor unit of the air conditioner from being transmitted to the outside via a case of the outdoor unit.
- In accordance with the present invention, the above and other objects can be accomplished by the provision of a noise reduction structure of an outdoor unit of a large-sized air conditioner comprising a compressor for compressing a refrigerant so as to circulate the refrigerant through a refrigerating cycle, wherein an anti-noise barrier provided with protrusions formed thereon surrounds the compressor so as to prevent noise generated from the compressor from being transmitted to the outside.
- The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
Fig. 1 is an exploded perspective view of an outdoor unit of a conventional large-sized air conditioner; -
Fig. 2 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with an embodiment of the present invention; -
Fig. 3 is a cross-sectional view taken along the line A-A ofFig. 2 ; -
Fig. 4 is a cross-sectional view taken along the line B-B ofFig. 2 ; -
Fig. 5 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with another embodiment of the present invention; and -
Fig. 6 is a cross-sectional view taken along the line C-C ofFig. 5 . - Now, preferred embodiments of the present invention will be described in detail with reference to the annexed drawings.
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Fig. 2 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with an embodiment of the present invention.Fig. 3 is a cross-sectional view taken along the line A-A ofFig. 2 , andFig. 4 is a cross-sectional view taken along the line B-B ofFig. 2 .Fig. 5 is an exploded perspective view of a noise reduction structure of an outdoor unit of a large-sized air conditioner in accordance with another embodiment of the present invention.Fig. 6 is a cross-sectional view taken along the line C-C ofFig. 5 . - As shown in
Figs. 2 and5 , the noise reduction structure of the outdoor unit of the large-sized air conditioner of the present invention comprises acase 58, anoutdoor blast fan 60, acondenser 62, a constant-speed compressor 64a, aninverter compressor 64b, and ananti-noise barrier 70. Thecase 58 comprises afront panel 52 provided with aheat discharging outlet 52a formed thereon, aback panel 54 provided with aheat absorbing inlet 54a formed thereon, and abase pan 56. The front andback panels base pan 56. Theoutdoor blast fan 60 is installed inside thefront panel 52 and serves to forcibly blow outdoor air. Thecondenser 62 is installed inside theback panel 54 and serves to exchange heat between the outdoor air forcibly blown by theoutdoor blast fan 60 and a refrigerant. The constant-speed compressor 64a and theinverter compressor 64b are arranged near thecondenser 62. The constant-speed compressor 64a is driven at constant speed and theinverter compressor 64b is driven at variable speed so as to compress the refrigerant and to control the flow rate of the refrigerant circulated through the refrigerating cycle according to the air-cooling capacity change. Theanti-noise barrier 70 surrounds theinverter compressor 64b and is provided with a plurality ofprotrusions inverter compressor 64b from being transmitted to the outside. - The noise reduction structure of the outdoor unit of the large-sized air conditioner of the present invention further comprises a sound absorbing and insulating material (not shown) surrounding the constant-
speed compressor 64a. The sound absorbing and insulating material is formed by stacking a sound-absorbing material (not shown) made of porous material such as non-woven fabric or foam aerosol, and a sound-insulating material (not shown) made of rubber or metal. - Herein, the
inverter compressor 64b changes its rotational speed depending on the air-cooling capacity and then is continuously driven while the air conditioner operates. Herein, only when a higher air-cooling capacity is required, the constant-speed inverter 64a as well as theinverter compressor 64b is driven. - Particularly, the rotational speed of the
inverter compressor 64b is variably changed according to an input frequency, thereby generating comparatively much noise due to the pulsation of pressure of the refrigerant and the structural vibration of theinverter compressor 64b. As a result of experiments, noise generation characteristics of theinverter compressor 64b are determined. Thus, theprotrusions anti-noise barrier 70 at a position where the noise is most strongly generated. - Herein, since the noise generated from the
inverter compressor 64b surrounded with theanti-noise barrier 70 is transmitted in the form of sound waves, the noise is not vertically incident on theanti-noise barrier 70 but is reflected into the inside of theanti-noise barrier 70 by theprotrusions anti-noise barrier 70. - In order to enhance an anti-noise effect, a sound absorbing and insulating
material 76 for absorbing the noise generated from theinverter compressor 64b is formed on the inner wall of theanti-noise barrier 70. Herein, the sound absorbing and insulatingmaterial 76 is formed on the whole inner wall of theanti-noise barrier 70 except for the area of theprotrusions - As shown in
Fig. 3 , the sound absorbing and insulatingmaterial 76 includes a sound-absorbingmaterial 76a and a sound-insulatingmaterial 76b. The sound-absorbingmaterial 76a is made of a porous material such as felt, fabric, or foam aerosol in which an air volume is very large relative to its total volume. The sound-insulatingmaterial 76b is made of rubber or metal and stacked on the sound-absorbingmaterial 76a. - Specifically, as shown in
Fig. 4 , each of theprotrusions 72 formed on one outer side surface of theanti-noise barrier 70 is horizontally extended and has a semi-circular cross section. Theprotrusions 72 formed on theanti-noise barrier 70 are parallelly spaced from each other by a designated distance (h). - Alternatively, as shown in
Fig. 6 , each ofother protrusions 74 formed on one outer side surface of theanti-noise barrier 70 is horizontally extended and has an arc-shaped cross section. Of course, theprotrusions 74 formed on theanti-noise barrier 70 are parallelly spaced from each other by a designated distance (h). - Further, a
ventilation hole 74a is formed on the bottom of theprotrusions 74 ofFig. 6 , thereby emitting heat generated from theinverter compressor 64b to the outside. - Alternatively, when the heat generated from the
inverter compressor 64b is excessive, the top surface of theanti-noise barrier 70 is opened and theoutdoor blast fan 60 is installed on the upper surface of theinverter compressor 64b, thereby effectively emitting the heat generated from theinverter compressor 64b to the outside. - Hereinafter, operation of the noise reduction structure of the outdoor unit of the large-sized air conditioner of the present invention is described.
- When power is applied, the
inverter compressor 64b is driven. Since the rotational speed of theinverter compressor 64b is variably changed according to the air-cooling capacity change, theinverter compressor 64b controls the flow rate of the refrigerant circulated through the refrigerating cycle. As a result, noise is generated from theinverter compressor 64b. - Herein, the noise generated from the
inverter compressor 64b is partially absorbed or reduced by the sound absorbing and insulatingmaterial 76, and cut off from the outside by theanti-noise barrier 70 surrounding theinverter compressor 64b. - Further, since the noise generated from the
inverter compressor 64b is not vertically incident on theanti-noise barrier 70 but is obliquely incident on theanti-noise barrier 70 by theprotrusions anti-noise barrier 70, thereby not being transmitted to the outside. - The heat generated from the
inverter compressor 64b is emitted to the outside via theventilation holes 74a formed on theprotrusions 74 of theanti-noise barrier 70. - As apparent from the above description, the present invention provides a noise reduction structure of an outdoor unit of a large-sized air conditioner, in which an anti-noise barrier provided with protrusions formed thereon surrounds an inverter compressor, thereby preventing noise generated from the inverter compressor from being transmitted to the outside. Therefore, the noise generated from the inverter compressor is reflected into the inside of the anti-noise barrier by the protrusions, thereby reducing noise pollution and increasing performance of the air conditioner product.
- Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope of the invention as disclosed in the accompanying claims.
Claims (11)
- A noise reduction structure of an outdoor unit of a large-sized air conditioner comprising a compressor (64b) for compressing a refrigerant so as to circulate the refrigerant through a refrigerating cycle,- wherein an anti-noise barrier (70) is configured to surround the compressor (64b) so as to prevent noise generated from the compressor (64b) from being transmitted to the outside, and- a sound absorbing and insulating material (76) is formed on an inner wall of the anti-noise barrier (70),characterized in that
the anti-noise barrier (70) is provided with a plurality of protrusions (72, 74) formed thereon. - The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 1, wherein the compressor (64b) is an inverter compressor for variably changing its driving speed, installed near a constant-speed compressor (64a) so that the air-cooling capacity of the air conditioner is variably changeable.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 1, wherein the sound absorbing and insulating material (76) is formed on the inner wall of the anti-noise barrier (70) except for an area provided with the protrusions (72, 74).
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 3, wherein the sound absorbing and insulating material (76) is formed by stacking a sound-absorbing material (76a) and a sound-insulating material (76b).
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 4, wherein the sound-absorbing material (76a) is made of porous material.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 4, wherein the sound-insulating material (76b) is made of rubber.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 1, wherein the anti-noise barrier (70) is made of metal.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 1, wherein the protrusions (72, 74) are formed on one outer side surface of the anti-noise barrier (70) at a position where the noise is most strongly generated.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 8, wherein the protrusions (72, 74) formed on one outer side surface of the anti-noise barrier (70) are parallely spaced from each other by a designated distance and have semi-circular cross sections.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 8, wherein the protrusions (72, 74) formed on one outer side surface of the anti-noise barrier are parallely spaced from each other by a designated distance and have arc-shaped cross sections.
- The noise reduction structure of an outdoor unit of a large-sized air conditioner as set forth in claim 10, wherein a ventilation hole (74a) for emitting heat generated from the compressor (64b) to the outside is formed on the bottom of each of the protrusions (74).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2001061460 | 2001-10-05 | ||
KR10-2001-0061460A KR100420520B1 (en) | 2001-10-05 | 2001-10-05 | Air-conditioner |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1300635A2 EP1300635A2 (en) | 2003-04-09 |
EP1300635A3 EP1300635A3 (en) | 2006-11-02 |
EP1300635B1 true EP1300635B1 (en) | 2009-09-09 |
Family
ID=19714900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02022121A Expired - Fee Related EP1300635B1 (en) | 2001-10-05 | 2002-10-02 | Noise reduction structure of outdoor unit of large-sized air conditioner |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1300635B1 (en) |
JP (1) | JP3723537B2 (en) |
KR (1) | KR100420520B1 (en) |
CN (1) | CN1211615C (en) |
DE (1) | DE60233626D1 (en) |
Cited By (1)
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CN113494771A (en) * | 2021-06-30 | 2021-10-12 | 杭州金泰环境科技有限公司 | Large-scale air conditioner room system with good noise reduction and sound insulation effects |
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FR2879797B1 (en) * | 2004-12-20 | 2007-09-21 | Valeo Climatisation Sa | DEVICE FOR THE ACOUSTICAL ATTENUATION OF AN AIR FLOW TREATMENT PLANT, AUBES GRID AGENT |
KR20070039718A (en) * | 2005-10-10 | 2007-04-13 | 위니아만도 주식회사 | Structure of panel in air-conditioner |
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CN100436957C (en) * | 2006-08-16 | 2008-11-26 | 广东科龙电器股份有限公司 | Silencing outdoor machine in reduced running noise |
FR2909164B1 (en) * | 2006-11-27 | 2013-09-27 | Harmonie Express | APPARATUS CONFORMABLY CONTAINING CAPACITY TO COVER AIR CONDITIONERS AND ON THE EXTERNAL SURFACE WHICH MAY APPEAR AT LEAST ONE NAME AND / OR AT LEAST ONE FIGURING SIGN. |
KR101936192B1 (en) * | 2010-12-29 | 2019-01-08 | 엘지전자 주식회사 | Outdoor unit for air conditioner |
CN102384571A (en) * | 2011-09-29 | 2012-03-21 | Tcl空调器(武汉)有限公司 | Silencing structure of air-conditioning compressor |
BR102012005849A2 (en) | 2012-03-15 | 2013-12-03 | Electrolux Do Brasil Sa | AIR CONDITIONER WITH VIBRATION BUFFER |
KR102010374B1 (en) * | 2012-03-20 | 2019-08-14 | 웅진코웨이 주식회사 | Structure for noise prevention of compensator and dehumidifier having the same |
CN102721165A (en) * | 2012-07-12 | 2012-10-10 | 王桂林 | Low-noise high-efficiency mobile type air conditioner |
CN104748252A (en) * | 2013-12-25 | 2015-07-01 | 珠海格力电器股份有限公司 | Compressor noise isolating device, air conditioning outdoor unit and air conditioner |
CN105020140A (en) * | 2014-04-30 | 2015-11-04 | 杨永坚 | Pump body of vacuum pressure combination pump |
CN104048367A (en) * | 2014-06-30 | 2014-09-17 | 珠海格力电器股份有限公司 | Vibration and noise reduction device of compressor |
EP3385626B1 (en) * | 2015-12-04 | 2022-10-26 | Mitsubishi Electric Corporation | Outdoor machine |
CN105423445B (en) * | 2015-12-25 | 2018-07-03 | 广东美的制冷设备有限公司 | Compressor assembly, outdoor unit and air conditioner |
CN105698283B (en) * | 2015-12-25 | 2019-04-19 | 广东美的制冷设备有限公司 | Compressor assembly, outdoor unit and air conditioner |
CN106765677A (en) * | 2016-12-27 | 2017-05-31 | 珠海格力电器股份有限公司 | A kind of noise reducing structure of outdoor and air-conditioner outdoor unit |
CN109028349B (en) * | 2018-06-15 | 2021-08-24 | 青岛海信日立空调系统有限公司 | Sound insulation cover, air conditioner outdoor unit and noise reduction method |
US20200355240A1 (en) * | 2018-11-21 | 2020-11-12 | Nok Corporation | Noise reduction structure |
JP7019097B2 (en) * | 2019-04-03 | 2022-02-14 | 三菱電機株式会社 | Outdoor unit of air conditioner |
CN114877420B (en) * | 2022-05-24 | 2023-09-22 | 湖南中合科技有限公司 | Intelligent control independent central air conditioner |
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JPH0267823U (en) * | 1988-07-27 | 1990-05-23 | ||
US5151018A (en) * | 1990-07-31 | 1992-09-29 | Copeland Corporation | Sound attenuation chamber |
JPH0836389A (en) * | 1994-07-21 | 1996-02-06 | Sharp Corp | Mounting device of compressor |
JP2943676B2 (en) * | 1995-11-24 | 1999-08-30 | 三菱電機株式会社 | refrigerator |
JPH10148362A (en) * | 1996-11-20 | 1998-06-02 | Fujitsu General Ltd | Sound absorbing material for air conditioner |
KR200154185Y1 (en) * | 1996-12-31 | 1999-08-02 | 윤종용 | Anti-noise apparatus of airconditioner |
KR19990017293U (en) * | 1997-10-31 | 1999-05-25 | 윤종용 | Outdoor unit for air conditioner |
KR100288872B1 (en) * | 1998-01-20 | 2001-02-12 | Samsung Electronics Co Ltd | Noise reduction apparatus for air conditioner outdoor unit |
-
2001
- 2001-10-05 KR KR10-2001-0061460A patent/KR100420520B1/en not_active IP Right Cessation
-
2002
- 2002-10-02 EP EP02022121A patent/EP1300635B1/en not_active Expired - Fee Related
- 2002-10-02 DE DE60233626T patent/DE60233626D1/en not_active Expired - Lifetime
- 2002-10-04 JP JP2002292054A patent/JP3723537B2/en not_active Expired - Fee Related
- 2002-10-05 CN CNB021575118A patent/CN1211615C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113494771A (en) * | 2021-06-30 | 2021-10-12 | 杭州金泰环境科技有限公司 | Large-scale air conditioner room system with good noise reduction and sound insulation effects |
Also Published As
Publication number | Publication date |
---|---|
CN1414317A (en) | 2003-04-30 |
KR20030028993A (en) | 2003-04-11 |
KR100420520B1 (en) | 2004-03-02 |
DE60233626D1 (en) | 2009-10-22 |
JP3723537B2 (en) | 2005-12-07 |
EP1300635A2 (en) | 2003-04-09 |
EP1300635A3 (en) | 2006-11-02 |
CN1211615C (en) | 2005-07-20 |
JP2003176935A (en) | 2003-06-27 |
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