US20020071774A1 - Compressor with mufflers - Google Patents
Compressor with mufflers Download PDFInfo
- Publication number
- US20020071774A1 US20020071774A1 US09/811,817 US81181701A US2002071774A1 US 20020071774 A1 US20020071774 A1 US 20020071774A1 US 81181701 A US81181701 A US 81181701A US 2002071774 A1 US2002071774 A1 US 2002071774A1
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- United States
- Prior art keywords
- exhaust
- coolant
- mufflers
- muffler
- noise
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/06—Mobile combinations
Definitions
- the present invention relates generally to compressors used for refrigerators or the like, and more particularly to a compressor that is provided with a plurality of exhaust mufflers to reduce pressure pulsation generated during the exhaust of coolant.
- the drive unit is mounted in the upper portion of the interior of the sealed container.
- the drive unit is comprised of a stator, a rotor, and a rotating shaft having an eccentric portion at its lower end.
- the rotating shaft is forcibly inserted into the center portion of the rotor, thus being rotated, together with the rotor.
- the compression unit is disposed in the lower portion of the interior of the sealed container.
- the compression unit is comprised of a cylinder head provided with suction and exhaust chambers for guiding the suction and exhaust of coolant, a cylinder block assembled with the cylinder head at its front end and provided with a compression chamber, a piston reciprocated through the compression chamber, and a connecting rod connected to the piston through an eccentric shaft for converting rotating movement into linear movement.
- a suction muffler is situated just over the cylinder head to reduce noise generated during the inflow of coolant.
- a coolant suction conduit is connected to the suction muffler.
- Two exhaust mufflers are mounted at two positions under the cylinder block to be connected to the exhaust chamber so as to reduce pressure pulsation generated during the exhaust of high-pressure coolant.
- a coolant exhaust conduit is connected to one of the exhaust mufflers.
- One exhaust muffler connected to the coolant exhaust conduit is constructed in a space expansion type, while the other exhaust muffler not connected to the coolant exhaust conduit is constructed in a Helmholtz resonator type.
- the present invention provides a compressor, comprising: a drive unit for generating power; a compression unit for sucking, compressing and exhausting coolant by power transmitted from the drive unit; at least a pair of exhaust mufflers in which coolant exhausted from the compressing unit is temporarily stored; a coolant exhaust conduit connected to one of the exhaust mufflers to guide the exhaust of coolant to the outside; and a connecting conduit connecting the exhaust mufflers to each other to cancel out noises during the recombination of divided coolant in one of the exhaust mufflers.
- the connecting conduit is preferably constructed to have a length such that a first noise in a first exhaust muffler of the exhaust mufflers is allowed to be opposite in phase to a second noise in a second exhaust muffler after being transmitted to the second exhaust muffler.
- the connecting conduit preferably has a length ranging from 13.4 to 23 cm.
- the present invention provides a compressor, comprising: a drive unit for generating power; a compression unit for sucking, compressing and exhausting coolant utilizing power transmitted from the drive unit; at least a pair of exhaust mufflers in which coolant exhausted from the compressing unit is temporarily stored; a coolant exhaust conduit connected to one of the exhaust mufflers to guide the exhaust of coolant to the outside; at least a pair of coolant passages each connecting the compression unit to each of the exhaust mufflers, the coolant passages having different lengths so that noises of coolant have opposite phases after the coolant passes through the coolant passages; and a connecting conduit connecting the exhaust mufflers to each other to cancel out the noises having opposite phases during the recombination of divided coolant in one of the exhaust mufflers.
- FIG. 2 is a cross-section taken along line II-II of FIG. 1;
- FIG. 3 is a cross-section taken along line III-III of FIG. 2;
- FIG. 4 is a diagram showing the operation of the compressor of the present invention in which the exhaust noises of coolant are reduced.
- a reciprocating compressor in accordance with the present invention is comprised of a sealed container 10 for containing oil in the lower portion of its interior, a drive unit 20 for generating power by the application of electricity, and a compression unit 30 for sucking, compressing and exhausting coolant using power generated by the drive unit 20 .
- the drive unit 20 is mounted in the upper portion of the interior of the sealed container 10 .
- the drive unit 20 is comprised of a stator 21 for generating a magnetic field by the application of electricity, a rotor 22 rotatably mounted in the stator 21 , and a rotating shaft 23 forcibly fitted into the rotor and provided with an eccentric portion at its lower end.
- the exhaust mufflers 50 L and 50 R are symmetrically arranged under the cylinder block 31 at two positions, and secured to the cylinder block 31 by means of bolts.
- a damping space 51 is formed in the interior of each of the exhaust mufflers 50 L and 50 R.
- a connecting conduit 60 connects the exhaust mufflers 50 L and 50 R to each other so as to diminish noises by destructive interference during the recombination of the coolant.
- one end 61 of the connecting conduit 60 is connected to the left exhaust muffler 50 L and the other end 62 of the connecting conduit 60 is connected to the right exhaust muffler 50 R, so the two exhaust mufflers 50 L and 50 R communicate with each other by the connecting conduit 60 .
- the connecting conduit 60 should be constructed to have a length, which allows a noise in the left exhaust muffler 50 L to be opposite in phase to a noise in the right exhaust muffler 50 R.
- the length L of the connecting conduit 60 is preferably 13.4 to 23 cm.
- a noise having a certain frequency band can be easily eliminated by varying the length L of the connecting conduit 60 . Additionally, it is apparent that if the inner diameter of the connecting conduit 60 as well as the length L of the connecting conduit 60 is suitably adjusted, a noise having a certain frequency band can be easily eliminated.
- a first noise “A” having a sine wave is created while compressed coolant is exhausted to the exhaust chamber 32 b (refer to FIG. 1) of the cylinder head 32 , and 18 the first noise “A” of a certain frequency band created by pressure pulsation is transmitted to the left and right exhaust mufflers 50 L and 50 R while the compressed coolant is sent to the left and right exhaust mufflers 50 L and 50 R.
- the second and third noises “B” and “C” having the same frequency as that of the first noise are created.
- the compressed coolant sent to the right exhaust muffler 50 R is directly exhausted to the outside through the coolant exhaust conduit 14 ; while the compressed coolant sent to the left exhaust muffler 50 L is sent to the right exhaust muffler 50 R through the connecting conduit 60 and recombined with the compressed coolant remaining in the right exhaust muffler 50 R.
- the noise “B” in the left exhaust muffler 50 L is transmitted to the right muffler 50 R through the connecting conduit 60 , the noise “B” becomes a noise “D” that has a phase difference of 180° in comparison with the noise “C” in the right exhaust muffler 50 R.
- the object of the present invention can be achieved by the adjustment of the lengths L 1 and L 2 of the coolant passages 52 L and 52 R that connect the exhaust chamber 32 b (refer to FIG. 1) to the exhaust muffler 50 L and the exhaust chamber 32 b (refer to FIG. 1) to the exhaust muffler 50 R, respectively.
- the length LI of the left coolant passage 52 L connecting the exhaust chamber 32 b to the left exhaust muffler 50 L and the length L 2 of the right coolant passage 52 R connecting the exhaust chamber 32 b to the right exhaust muffler 50 R are designed to be different from each other (in this embodiment, the length L 1 of the left coolant passage 52 L is designed to be longer than the length L 2 of the right coolant passage 52 R, that is, L 1 >L 2 ).
- the noise generated during the exhaust of coolant from the exhaust chamber 32 b of the cylinder head 32 is transmitted to the exhaust mufflers 50 L and 50 R through the coolant passages 52 L and 52 R of different lengths L 1 and L 2 , so the noises in the left and right mufflers have opposite phases.
- the compressed coolant sent to the left exhaust muffler 50 L is sent to the right exhaust muffler 50 R through the connecting conduit 60 , recombined with the coolant remaining in the right exhaust muffler 50 R, and discharged from the sealed container 10 , together with the coolant remaining in the right exhaust muffler 50 R.
- the noise in the left exhaust muffler 50 L, together with the compressed coolant is transmitted to the right exhaust muffler 50 R through the connecting conduit 60 , so the noise transmitted from the left exhaust muffler 50 L and the noise in the right exhaust muffler 50 R are canceled out by destructive interference. Accordingly, the entire exhaust noises of the compressed coolant are considerably reduced.
- the present invention provides a compressor with exhaust mufflers in which a pair of exhaust mufflers is symmetrically arranged under its cylinder block, a coolant exhaust conduit is connected to one of the exhaust mufflers and the exhaust mufflers are connected by a connecting conduit to communicate with each other.
- the length of the connecting conduit is designed so as to allow the phase of the noise of coolant contained in one of the exhaust mufflers to be opposite to the phase of the noise of the coolant contained in the other exhaust muffler after the transmission of the noise of the former exhaust muffler.
Abstract
Disclosed herewith is a compressor with mufflers. The compressor comprises a drive unit, a compression unit, at least a pair of exhaust mufflers, a coolant exhaust conduit, and a connecting conduit. The drive unit generates power. The compression unit sucks, compresses and exhausts coolant using power transmitted from the drive unit. The exhaust mufflers temporarily store coolant exhausted from the compressing unit. The coolant exhaust conduit is connected to one of the exhaust mufflers to guide the exhaust of coolant to the outside. The connecting conduit connects the exhaust mufflers to each other to cancel out noises during the recombination of divided coolant in one of the exhaust mufflers.
Description
- This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C. §119 from an application for Compressor with Discharge Muffler earlier filed in the Korean Industrial Office on Dec. 11, 2000 and there duly assigned Serial No. 75129/2000 by that Office.
- 1. Field of the Invention
- The present invention relates generally to compressors used for refrigerators or the like, and more particularly to a compressor that is provided with a plurality of exhaust mufflers to reduce pressure pulsation generated during the exhaust of coolant.
- 2. Description of the Prior Art
- In general, a compressor is an apparatus, which is applied to the refrigeration cycle of a refrigerator or the like (in which coolant undergoes a compression process, a condensing process, an expansion process and an evaporation process, sequentially), and compresses low-temperature and low-pressure coolant into high-temperature and high-pressure coolant. Such a compressor may be classified into a linear compressor or reciprocating compressor according to its operating movement.
- A conventional reciprocating compressor is comprised of a sealed container for constituting the outside of the compressor, a drive unit mounted in the sealed container for generating power, and a compression unit for sucking, compressing and exhausting coolant using power generated by the drive unit.
- The drive unit is mounted in the upper portion of the interior of the sealed container. The drive unit is comprised of a stator, a rotor, and a rotating shaft having an eccentric portion at its lower end. The rotating shaft is forcibly inserted into the center portion of the rotor, thus being rotated, together with the rotor.
- The compression unit is disposed in the lower portion of the interior of the sealed container. The compression unit is comprised of a cylinder head provided with suction and exhaust chambers for guiding the suction and exhaust of coolant, a cylinder block assembled with the cylinder head at its front end and provided with a compression chamber, a piston reciprocated through the compression chamber, and a connecting rod connected to the piston through an eccentric shaft for converting rotating movement into linear movement.
- In addition, a suction muffler is situated just over the cylinder head to reduce noise generated during the inflow of coolant. A coolant suction conduit is connected to the suction muffler. Two exhaust mufflers are mounted at two positions under the cylinder block to be connected to the exhaust chamber so as to reduce pressure pulsation generated during the exhaust of high-pressure coolant. A coolant exhaust conduit is connected to one of the exhaust mufflers. One exhaust muffler connected to the coolant exhaust conduit is constructed in a space expansion type, while the other exhaust muffler not connected to the coolant exhaust conduit is constructed in a Helmholtz resonator type.
- When the conventional reciprocating compressor constructed as described above is powered on, the rotating shaft is rotated together with the rotor, and the piston connected to the eccentric portion through the connecting rod is reciprocated through the compression chamber. Accordingly, coolant passes through the suction muffler and the suction chamber of the cylinder head, and flows into and is compressed in the compression chamber. Continuously compressed coolant is exhausted to the exhaust chamber of the cylinder head and the exhaust muffler.
- Low-pressure coolant sucked by the movement of the piston toward the bottom dead center is compressed by the movement of the piston toward the top dead center, and compressed coolant is exhausted to the exhaust chamber of the cylinder head. A portion of compressed coolant is sent to the space expansion type exhaust muffler and the remaining portion is sent to the Helmholtz type exhaust muffler, so the pressure pulsation of coolant is reduced. In this case, owing to the pressure difference during the movement of the piston toward its bottom dead center, compressed coolant in the Helmholtz resonance type muffler passes through the exhaust chamber of the cylinder head, enters the space expansion type exhaust muffler, and thereafter is exhausted to the outside.
- However, in the conventional reciprocating compressor, compressed coolant in the Helmholtz resonance type exhaust muffler passes through the exhaust chamber of the cylinder bead and enters the space expansion type exhaust muffler, so the peak of pressure pulsation is changed during the recombination of coolant, resulting in the problem of creating a noise having a different frequency band.
- Additionally, many factors, such as the volume of the exhaust muffler affecting the natural frequency of the Helmholtz resonance type exhaust muffler and the length and sectional area of the coolant passage connecting the exhaust chamber and the exhaust muffler, should be taken into account so as to reduce a noise generated in the exhaust chamber of the cylinder head, thus making the adjustment of the factors difficult to achieve.
- Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a compressor with mufflers, which is capable of considerably reducing the exhaust noises of coolant in such a way that noises created in the exhaust mufflers by pressure pulsation are cancelled out by destructive interference during the recombination of coolant by directly connecting the exhausting mufflers to one another.
- In order to accomplish the above object, the present invention provides a compressor, comprising: a drive unit for generating power; a compression unit for sucking, compressing and exhausting coolant by power transmitted from the drive unit; at least a pair of exhaust mufflers in which coolant exhausted from the compressing unit is temporarily stored; a coolant exhaust conduit connected to one of the exhaust mufflers to guide the exhaust of coolant to the outside; and a connecting conduit connecting the exhaust mufflers to each other to cancel out noises during the recombination of divided coolant in one of the exhaust mufflers.
- The connecting conduit is preferably constructed to have a length such that a first noise in a first exhaust muffler of the exhaust mufflers is allowed to be opposite in phase to a second noise in a second exhaust muffler after being transmitted to the second exhaust muffler.
- Under the conditions that the frequency bands of the noises generated in the exhaust mufflers are 350 to 600 Hz and the transmission speed of a noise in coolant is 161 m/s, the connecting conduit preferably has a length ranging from 13.4 to 23 cm.
- In addition, the present invention provides a compressor, comprising: a drive unit for generating power; a compression unit for sucking, compressing and exhausting coolant utilizing power transmitted from the drive unit; at least a pair of exhaust mufflers in which coolant exhausted from the compressing unit is temporarily stored; a coolant exhaust conduit connected to one of the exhaust mufflers to guide the exhaust of coolant to the outside; at least a pair of coolant passages each connecting the compression unit to each of the exhaust mufflers, the coolant passages having different lengths so that noises of coolant have opposite phases after the coolant passes through the coolant passages; and a connecting conduit connecting the exhaust mufflers to each other to cancel out the noises having opposite phases during the recombination of divided coolant in one of the exhaust mufflers.
- 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 a partial cross-section showing a compressor with mufflers in accordance with an embodiment of the present invention;
- FIG. 2 is a cross-section taken along line II-II of FIG. 1;
- FIG. 3 is a cross-section taken along line III-III of FIG. 2;
- FIG. 4 is a diagram showing the operation of the compressor of the present invention in which the exhaust noises of coolant are reduced; and
- FIG. 5 is a bottom view showing another compressor with mufflers in accordance with another embodiment of the present invention.
- Reference now should be made to the drawings, in which the same reference numerals are used throughout the different drawings to designate the same or similar components.
- A reciprocating compressor in accordance with the present invention is comprised of a sealed
container 10 for containing oil in the lower portion of its interior, adrive unit 20 for generating power by the application of electricity, and acompression unit 30 for sucking, compressing and exhausting coolant using power generated by thedrive unit 20. - The sealed
container 10 constitutes the exterior of the reciprocating compressor, and is fabricated by airtightly attaching anupper container part 11 and thelower container part 12 to each other. - The
drive unit 20 is mounted in the upper portion of the interior of the sealedcontainer 10. Thedrive unit 20 is comprised of astator 21 for generating a magnetic field by the application of electricity, arotor 22 rotatably mounted in thestator 21, and a rotatingshaft 23 forcibly fitted into the rotor and provided with an eccentric portion at its lower end. - The
compression unit 30 is disposed in the lower portion of the interior of the sealedcontainer 10. Thecompression unit 30 is comprised of acylinder block 31 provided with acompression chamber 31 a to suck, compress and exhaust coolant by the reciprocating movement of apiston 33, a connectingrod 34 connecting thepiston 33 and theeccentric portion 24, acylinder head 32 situated in front of thecylinder block 31 and provided with asucking chamber 32 a and theexhaust chamber 32 b. Reference numeral “25” designates a support bearing that is rested on thecylinder block 31 to support the rotation of the rotatingshaft 23 and therotor 22. Reference numeral “40” designates a suction muffler that is situated over thecylinder head 32 to reduce noise generated by the inflow of coolant. Acoolant suction conduit 13 is connected to thesuction muffler 40 to guide coolant from the outside to the sealedcontainer 10. - The
exhaust mufflers cylinder block 31 so as to reduce pressure pulsation during the exhaust of compressed coolant through theexhaust chamber 32 b of thecylinder head 32. The detailed structure of theexhaust mufflers - First of all, the
exhaust mufflers cylinder block 31 at two positions, and secured to thecylinder block 31 by means of bolts. Adamping space 51 is formed in the interior of each of theexhaust mufflers -
Coolant passages cylinder block 31 to connect theexhaust chamber 32 b (refer to FIG. 1) of thecylinder head 32 and each of theexhaust mufflers coolant exhaust conduit 14 is connected to one of theexhaust mufflers coolant exhaust conduit 14 is connected to theright exhaust muffler 50R). - A connecting
conduit 60 connects theexhaust mufflers end 61 of the connectingconduit 60 is connected to theleft exhaust muffler 50L and theother end 62 of the connectingconduit 60 is connected to theright exhaust muffler 50R, so the twoexhaust mufflers conduit 60. - In this case, the connecting
conduit 60 should be constructed to have a length, which allows a noise in theleft exhaust muffler 50L to be opposite in phase to a noise in theright exhaust muffler 50R. - The determination of the length of the connecting
conduit 60 will be described hereinafter. - In order to allow the noise in the
left exhaust muffler 50L to be opposite in phase to the noise in theright exhaust muffler 50R after passing through the connectingconduit 60, the length of the connectingconduit 60 should satisfy the following equation: - L=λ/2
- where L is the length of the connecting
conduit 60, λ is c/f, c is the frequency of a noise, and f is the transmission speed of a noise in coolant. - By way of example, under the conditions that the frequency “c” of the noises generated in the
exhaust mufflers 50L and 5OR are 350 to 600 Hz and the transmission speed “f” of a noise in coolant R134 a generally applied to a refrigerator is 161 m/s (at 100° C.), the length L of the connectingconduit 60 is preferably 13.4 to 23 cm. - As a result, after the noise in the
left exhaust muffler 50L is transmitted to theright exhaust muffler 50R through the connectingconduit 60, the phase of the noise from theleft exhaust muffler 50L becomes opposite to that of the noise in theright exhaust muffler 50R. This causes the noise in theleft exhaust muffler 50L to cancel out the noise in theright exhaust muffler 50R by destructive interference. - In the reciprocating compressor, a noise having a certain frequency band can be easily eliminated by varying the length L of the connecting
conduit 60. Additionally, it is apparent that if the inner diameter of the connectingconduit 60 as well as the length L of the connectingconduit 60 is suitably adjusted, a noise having a certain frequency band can be easily eliminated. - Hereinafter, the operation and effects of the reciprocating compressor of the present invention are described in detail.
- When the reciprocating compressor of the present invention is powered on, the
rotor 22 is rotated with the rotatingshaft 23 at a high speed. This rotating movement is converted into the linear movement of thepiston 33 through the connectingrod 33. - Accordingly, the
piston 33 is reciprocated through thecompression chamber 31 a. When thepiston 33 is moved toward its bottom dead center, or is at its suction stage, low-pressure coolant is sucked to thecompression chamber 31 a through thesuction muffler 40 and thesuction chamber 32 a; whereas thepiston 33 is moved toward its top dead center, or is at its exhaust stage, compressed coolant is exhausted to theexhaust chamber 32 b and the damping spaces of theexhaust mufflers container 10 through thecoolant exhaust conduit 14. This operation is performed one time for a single revolution of therotating shaft 23. - In the meantime, a portion of compressed coolant exhausted to the
exhaust chamber 32 b is sent to theleft exhaust muffler 50L through theleft coolant passage 52L and the remaining portion is sent to theright exhaust muffler 50R through theright coolant passage 52R, so pressure pulsation is reduced. In this state, coolant is exhausted to the outside through thecoolant exhaust conduit 14. The compressed coolant sent to theleft exhaust muffler 50L is exhausted to theright exhaust muffler 50R through the connectingconduit 60. During this process, the noises of the compressed coolant are cancelled out. - As shown in FIG. 4, a first noise “A” having a sine wave is created while compressed coolant is exhausted to the
exhaust chamber 32 b (refer to FIG. 1) of thecylinder head 32, and 18 the first noise “A” of a certain frequency band created by pressure pulsation is transmitted to the left andright exhaust mufflers right exhaust mufflers right exhaust mufflers - Thereafter, the compressed coolant sent to the
right exhaust muffler 50R is directly exhausted to the outside through thecoolant exhaust conduit 14; while the compressed coolant sent to theleft exhaust muffler 50L is sent to theright exhaust muffler 50R through the connectingconduit 60 and recombined with the compressed coolant remaining in theright exhaust muffler 50R. - While the noise “B” in the
left exhaust muffler 50L, together with the compressed coolant, is transmitted to theright muffler 50R through the connectingconduit 60, the noise “B” becomes a noise “D” that has a phase difference of 180° in comparison with the noise “C” in theright exhaust muffler 50R. - As a result, while the compressed coolant in the
left exhaust muffler 50L is recombined with the compressed coolant in theright exhaust muffler 50R through the connectingconduit 60, the noises are cancelled out by destructive interference. Consequently, the entire exhaust noise of the compressed coolant is considerably reduced. - Meanwhile, although the noises are described as being canceled out by the adjustment of the length L of the connecting
conduit 60, the object of the present invention can be achieved by the adjustment of the lengths L1 and L2 of thecoolant passages exhaust chamber 32 b (refer to FIG. 1) to theexhaust muffler 50L and theexhaust chamber 32 b (refer to FIG. 1) to theexhaust muffler 50R, respectively. - In more detail, in order to allow the phases of noises to be opposite after the compressed coolant is sent to the
exhaust mufflers coolant passages left coolant passage 52L connecting theexhaust chamber 32 b to theleft exhaust muffler 50L and the length L2 of theright coolant passage 52R connecting theexhaust chamber 32 b to theright exhaust muffler 50R are designed to be different from each other (in this embodiment, the length L1 of theleft coolant passage 52L is designed to be longer than the length L2 of theright coolant passage 52R, that is, L1>L2). - Accordingly, the noise generated during the exhaust of coolant from the
exhaust chamber 32 b of thecylinder head 32 is transmitted to theexhaust mufflers coolant passages - The compressed coolant sent to the
left exhaust muffler 50L is sent to theright exhaust muffler 50R through the connectingconduit 60, recombined with the coolant remaining in theright exhaust muffler 50R, and discharged from the sealedcontainer 10, together with the coolant remaining in theright exhaust muffler 50R. In this case, the noise in theleft exhaust muffler 50L, together with the compressed coolant, is transmitted to theright exhaust muffler 50R through the connectingconduit 60, so the noise transmitted from theleft exhaust muffler 50L and the noise in theright exhaust muffler 50R are canceled out by destructive interference. Accordingly, the entire exhaust noises of the compressed coolant are considerably reduced. - As described above, the present invention provides a compressor with exhaust mufflers in which a pair of exhaust mufflers is symmetrically arranged under its cylinder block, a coolant exhaust conduit is connected to one of the exhaust mufflers and the exhaust mufflers are connected by a connecting conduit to communicate with each other. In this case, the length of the connecting conduit is designed so as to allow the phase of the noise of coolant contained in one of the exhaust mufflers to be opposite to the phase of the noise of the coolant contained in the other exhaust muffler after the transmission of the noise of the former exhaust muffler. As a result, noises are cancelled out by destructive interference while the compressed coolant sent to a pair of exhaust mufflers are recombined with each other through the connecting conduit, so the entire noises of compressed coolant are considerably reduced. Additionally, a noise having any frequency band can be easily eliminated by varying the length of the connecting conduit.
- 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 and spirit of the invention as disclosed in the accompanying claims.
Claims (4)
1. A compressor, comprising:
a drive unit for generating power;
a compression unit for sucking, compressing and exhausting coolant by power transmitted from said drive unit;
at least a pair of exhaust mufflers in which coolant exhausted from said compressing unit is temporarily stored;
a coolant exhaust conduit connected to one of said exhaust mufflers to guide the exhaust of coolant to the outside; and
a connecting conduit connecting said exhaust mufflers to each other to cancel out noises during the recombination of divided coolant in one of said exhaust mufflers.
2. The compressor according to claim 1 , where said connecting conduit is constructed to have a length such that a first noise in a first exhaust muffler of said exhaust mufflers is allowed to be opposite in phase to a second noise in a second exhaust muffler after being transmitted to said second exhaust muffler.
3. The compressor according to claim 1 , wherein under the conditions that the frequency bands of the noises generated in said exhaust mufflers are 350 to 600 Hz and the transmission speed of a noise in coolant is 161 m/s, said connecting conduit has a length ranging from 13.4 to 23 cm.
4. A compressor, comprising:
a drive unit for generating power;
a compression unit for sucking, compressing and exhausting coolant utilizing power transmitted from said drive unit;
at least a pair of exhaust mufflers in which coolant exhausted from said compressing unit is temporarily stored;
a coolant exhaust conduit connected to one of said exhaust mufflers to guide the exhaust of coolant to the outside;
at least a pair of coolant passages each connecting said compression unit to each of said exhaust mufflers, said coolant passages having different lengths so that noises of coolant have opposite phases after the coolant passes through said coolant passages; and
a connecting conduit connecting said exhaust mufflers to each other to cancel out said noises having opposite phases during the recombination of divided coolant in one of said exhaust mufflers.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR2000-75129 | 2000-12-11 | ||
KR1020000075129A KR20020045741A (en) | 2000-12-11 | 2000-12-11 | Compressor with discharge muffler |
Publications (1)
Publication Number | Publication Date |
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US20020071774A1 true US20020071774A1 (en) | 2002-06-13 |
Family
ID=19702920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/811,817 Abandoned US20020071774A1 (en) | 2000-12-11 | 2001-03-20 | Compressor with mufflers |
Country Status (5)
Country | Link |
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US (1) | US20020071774A1 (en) |
JP (1) | JP2002202055A (en) |
KR (1) | KR20020045741A (en) |
CN (1) | CN1358936A (en) |
IT (1) | ITRM20010144A1 (en) |
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US20050281691A1 (en) * | 2004-06-21 | 2005-12-22 | Samsung Electronics Co., Ltd. | Compressor |
US20070201990A1 (en) * | 2003-12-23 | 2007-08-30 | Whirlpool S.A. | Discharge System for Compressors |
WO2008078875A1 (en) | 2006-12-27 | 2008-07-03 | Lg Electronics Inc. | Discharging noise system of a hermetic compressor |
US20090081054A1 (en) * | 2006-01-16 | 2009-03-26 | Lg Electronics Inc | Structure of Discharging Refrigerant For Linear Compressor |
EP2058610A1 (en) * | 2006-08-30 | 2009-05-13 | Daikin Industries, Ltd. | Refrigeration system |
US20100166586A1 (en) * | 2008-12-30 | 2010-07-01 | Samsung Gwangju Electronics Co., Ltd. | Hermetic compressor |
WO2015000523A1 (en) * | 2013-07-04 | 2015-01-08 | Arcelik Anonim Sirketi | Thermally improved reciprocating hermetic compressor |
US20220290662A1 (en) * | 2019-08-16 | 2022-09-15 | Nidec Global Appliance Brasil Ltda. | System for thermal insulation of suction muffler in compressors |
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KR100448547B1 (en) * | 2001-08-17 | 2004-09-13 | 삼성광주전자 주식회사 | Hermetic reciprocating piston compressor |
KR100816833B1 (en) * | 2002-06-28 | 2008-03-26 | 엘지전자 주식회사 | A frame for hermetic compressor |
KR100575829B1 (en) * | 2003-12-31 | 2006-05-03 | 엘지전자 주식회사 | Suction-muffler assembly structure for reciprocating compressor |
CN102168665A (en) * | 2011-05-03 | 2011-08-31 | 芜湖欧宝机电有限公司 | Cylinder seat of piston type refrigerating compressor |
CN105332889A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Reciprocating compressor |
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DE3332259A1 (en) * | 1983-09-07 | 1985-03-28 | Danfoss A/S, Nordborg | REFRIGERATOR COMPRESSORS |
JPS6460783A (en) * | 1987-08-28 | 1989-03-07 | Matsushita Refrigeration | Enclosed motor compressor |
US5173034A (en) * | 1991-07-18 | 1992-12-22 | White Consolidated Industries, Inc. | Discharge muffler for refrigeration compressor |
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- 2000-12-11 KR KR1020000075129A patent/KR20020045741A/en not_active Application Discontinuation
-
2001
- 2001-03-13 JP JP2001070773A patent/JP2002202055A/en active Pending
- 2001-03-20 IT IT2001RM000144A patent/ITRM20010144A1/en unknown
- 2001-03-20 US US09/811,817 patent/US20020071774A1/en not_active Abandoned
- 2001-03-21 CN CN01109854A patent/CN1358936A/en active Pending
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US20050042114A1 (en) * | 2003-08-22 | 2005-02-24 | Samsung Gwang Ju Electronics Co., Ltd. | Hermetic compressor |
US20070201990A1 (en) * | 2003-12-23 | 2007-08-30 | Whirlpool S.A. | Discharge System for Compressors |
US7972120B2 (en) * | 2003-12-23 | 2011-07-05 | Whirlpool S.A. | Discharge system for compressors |
US20050281691A1 (en) * | 2004-06-21 | 2005-12-22 | Samsung Electronics Co., Ltd. | Compressor |
US20090081054A1 (en) * | 2006-01-16 | 2009-03-26 | Lg Electronics Inc | Structure of Discharging Refrigerant For Linear Compressor |
US8057200B2 (en) * | 2006-01-16 | 2011-11-15 | Lg Electronics Inc. | Structure of discharging refrigerant for linear compressor |
EP2058610A4 (en) * | 2006-08-30 | 2014-09-03 | Daikin Ind Ltd | Refrigeration system |
EP2058610A1 (en) * | 2006-08-30 | 2009-05-13 | Daikin Industries, Ltd. | Refrigeration system |
EP2049798A4 (en) * | 2006-12-27 | 2009-11-18 | Lg Electronics Inc | Discharging noise system of a hermetic compressor |
US20090232671A1 (en) * | 2006-12-27 | 2009-09-17 | Min-Kyu Jung | Discharging Noise System of a Hermetic Compressor |
EP2049798A1 (en) * | 2006-12-27 | 2009-04-22 | LG Electronics Inc. | Discharging noise system of a hermetic compressor |
US8062004B2 (en) | 2006-12-27 | 2011-11-22 | Lg Electronics Inc. | Discharging noise system of a hermetic compressor |
WO2008078875A1 (en) | 2006-12-27 | 2008-07-03 | Lg Electronics Inc. | Discharging noise system of a hermetic compressor |
US20100166586A1 (en) * | 2008-12-30 | 2010-07-01 | Samsung Gwangju Electronics Co., Ltd. | Hermetic compressor |
US8133038B2 (en) * | 2008-12-30 | 2012-03-13 | Samsung Electronics Co., Ltd. | Hermetic compressor |
WO2015000523A1 (en) * | 2013-07-04 | 2015-01-08 | Arcelik Anonim Sirketi | Thermally improved reciprocating hermetic compressor |
US20220290662A1 (en) * | 2019-08-16 | 2022-09-15 | Nidec Global Appliance Brasil Ltda. | System for thermal insulation of suction muffler in compressors |
Also Published As
Publication number | Publication date |
---|---|
ITRM20010144A1 (en) | 2002-09-20 |
KR20020045741A (en) | 2002-06-20 |
CN1358936A (en) | 2002-07-17 |
JP2002202055A (en) | 2002-07-19 |
ITRM20010144A0 (en) | 2001-03-20 |
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Legal Events
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AS | Assignment |
Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, HAK-JOON;REEL/FRAME:011767/0576 Effective date: 20010403 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |