US20090257892A1 - Suction muffler for a hermetically enclosed refrigerant compressor - Google Patents
Suction muffler for a hermetically enclosed refrigerant compressor Download PDFInfo
- Publication number
- US20090257892A1 US20090257892A1 US12/400,856 US40085609A US2009257892A1 US 20090257892 A1 US20090257892 A1 US 20090257892A1 US 40085609 A US40085609 A US 40085609A US 2009257892 A1 US2009257892 A1 US 2009257892A1
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- Prior art keywords
- tube
- suction muffler
- insert
- housing
- muffling
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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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
Definitions
- the invention concerns a suction muffler for a hermetically enclosed refrigerant compressor with a housing having, between an inlet and an outlet, a first muffling chamber in the flow direction and a second muffling chamber in the flow direction, an insert being arranged between the muffling chambers, the insert having a passage that connects the muffling chambers to each other.
- Such a suction muffler is, for example, known from DE 199 23 734 C2.
- the housing has an upper part and a bottom part.
- the insert is fixed between the upper part and the bottom part.
- the inlet is arranged, which opens via an inlet channel into the first muffling chamber.
- the inlet channel With a space, the inlet channel extends into a tube channel, which forms the passage in the insert.
- the tube channel again extends into an outlet channel, a space being provided between the tube channel and the outlet channel, the space connecting the outlet to the second muffling chamber.
- Such an embodiment is known from DE 101 28 225 C1. Also here a flow path is provided, which extends straightly from an inlet channel to an outlet channel and is connected to both muffling chambers.
- suction mufflers for refrigerant compressors have proved to be efficient. They reduce noise that occurs because of pressure pulsations during suction of the refrigerant gas by the refrigerant compressor.
- the suction muffler is usually arranged at the cylinder head of the refrigerant compressor.
- the refrigerant compressor is arranged in a hermetically enclosed case and is usually supported in relation to the case by means of springs.
- the case comprises an oil sump serving as reservoir, for lubrication of the moving parts of the compressor with oil.
- oil sump serving as reservoir, for lubrication of the moving parts of the compressor with oil.
- compressors There is a tendency towards building smaller compressors.
- One method of reducing the dimensions is to reduce the height of the refrigerant compressor.
- the invention is based on the task of ensuring a certain freedom for the positioning of the suction muffler in the compressor case.
- the insert has a tube that is led through the second muffling chamber, one end of the tube being led through the housing, the other end opening into the first muffling chamber.
- the suction muffler can be arranged substantially closer to the oil sump than it would be the case with an inlet in the lower half of the suction muffler.
- the inlet and the outlet can then be arranged in the same half of the suction muffler, for example both in the upper half, or even at the upper side of the housing. In this case, the housing can even be permitted to dip somewhat into the oil sump.
- the suction muffler is then made as a “schnorkel” suction muffler.
- the tube By means of the tube, the refrigerant gas sucked in is led through the second muffling chamber.
- the tube path for the refrigerant gas surrounded by the tube is sealed in relation to the second muffling chamber, so that no impermissible mixing between the gas sucked in and the gas in the second muffling chamber can take place. Also, sound waves from the second muffling chamber cannot right away trespass into the tube path, so that a sound propagation through the tube is avoided.
- the housing has an outwardly projecting first tube connection, the tube being led through said connection.
- the suction muffler is a component of a refrigerant compressor, which is manufactured in large numbers, the accuracy of the parts, from which the suction muffler is manufactured, can only to a certain degree be increased. It is therefore assumed that a small clearance will remain, when the tube is led through the housing. This clearance causes that a small opening occurs between the tube and the housing, for example in the form of an annular gap. If a tube connection is used, the axial length of this annular gap will be increased, so that the annular gap can provide a substantial flow resistance, and thus also a resistance against the escape of sound waves from the second muffling chamber to the outside.
- the housing has an inwardly guided, second tube connection, through which the tube is led.
- the sealing “path” between the outside of the tube and the inside of the housing is extended.
- the resulting axial length of the annular gap provides a relatively good sealing, which prevents refrigerant gas from the second muffling chamber from escaping to the outside.
- a sound propagation towards the outside is kept small.
- the second tube connection has a length, which corresponds to at least 75% of the smallest distance between the insert and the housing in the area of the second tube connection.
- the second tube connection will even be so long that it practically reaches the insert. The larger the length of the second tube connection is, the better is the sealing achieved between the second tube connection and the tube.
- the insert has a jacket tube, which surrounds the second tube connection, at least on part of its length. Together, the jacket tube and the tube form an annular gap, into which the second tube connection of the housing projects.
- the inner diameter of the jacket tube is adapted to the outer diameter of the second tube connection.
- the inner diameter of the second tube connection is adapted to the outer diameter of the tube, small tolerances being acceptable.
- This embodiment provides some kind of labyrinth seal, which provides a relatively good protection against an escape of refrigerant gas from the second muffling chamber and thus a propagation of sound waves from the second muffling chamber to the outside. Further, after a certain operation time, a certain amount of oil will gather between the jacket tube and the second tube connection, which further improves the sealing between the jacket tube and the second tube connection.
- the jacket tube has a length, which corresponds to at least 75% of the shortest distance between the insert and the housing in the area of the second tube connection.
- a relatively large part of the length of the second tube connection will be surrounded by the jacket tube. The larger the length, the better the sealing.
- the tube projects through the insert. This means that a certain length of the tube extends into the first muffling chamber. In a manner of speaking, this can be utilised to guide the suction refrigerant gas into the first muffling chamber. This guiding can be utilised to achieve improved muffling properties.
- the passage between the muffling chambers is formed by a tube channel, which is arranged in the insert and projects over the insert on both sides.
- a tube channel as such is known from DE 101 28 225 C1 mentioned in the introduction. With the tube channel it can be provided that the refrigerant gas is guided when passing from the first muffling chamber into the second muffling chamber.
- the tube channel and an outlet channel are arranged in series in the flow direction along the same axis. Between the tube channel and the outlet channel, a space exists, which ensures a connection to the second muffling chamber. Sound waves occurring because of pulsations can then propagate into the second muffling chamber without penetrating to the outside. However, the refrigerant gas from the first muffling chamber will be sucked into the refrigerant compressor with relatively little resistance.
- the tube has an opening, which lies opposite a curved bottom wall of the housing.
- the suction refrigerant gas which flows in through the tube, can then be redirected by a vortex formation causing only small losses.
- the curved bottom wall then leads the suction refrigerant gas to the tube channel and thus in the direction of the outlet.
- the housing has a gas guiding wall, which surrounds the tube on a part of its circumference.
- the gas guiding wall ensures that practically no hollows or recirculation zones are present, in which larger oil amounts could gather.
- the gas guiding wall ensures that oil sucked in by the refrigerant gas will eventually also be taken out of the suction muffler by the refrigerant gas. A small amount of oil in the suction muffler, however, is not harmful.
- the curved bottom wall extends into a guiding surface, which is at least partly arranged in parallel with the axis. If oil should gather, it is driven by the refrigerant gas along the bottom wall to the guiding surface and from here into the passage, so that it reaches the outlet.
- FIGURE is a schematic cross-section through a suction muffler.
- a suction muffler 1 has a housing with an upper part 2 and a bottom part 3 .
- the upper part 2 has a circumferential flange 4 , which is fixed to a circumferential flange 5 on the bottom part, for example by bonding or welding.
- an additional flange 6 of the insert 7 is arranged and fixed, which separates the housing into a first muffling chamber 8 and a second muffling chamber 9 .
- the order of the muffling chambers 8 , 9 here refers to a flow direction from an inlet 10 for the refrigerant to an outlet 11 for the refrigerant.
- the upper part 2 , the bottom part 3 and the insert 7 are made of a plastic material with poor heat conductivity, for example PBTP.
- the insert 7 has a tube 12 , which is in the present case made in one piece with the insert 7 .
- the tube 12 can also be connected to the insert 7 in other ways.
- the tube 12 is led through the second muffling chamber 9 and through the upper part 2 to the outside.
- the upper part has an outwardly extending first tube connection 13 , whose inner diameter does, with certain manufacturing-caused tolerances, correspond to the outer diameter of the tube 12 .
- the outwardly extending first tube connection 13 extends inwardly into a second tube connection 14 , which projects inwardly from the upper part 2 and extends into the second muffling chamber 9 .
- the inner diameter of the second tube connection 14 corresponds to the outer diameter of the tube 12 .
- the second tube connection 14 extends approximately up to the insert 7 . At least, it has a length, which corresponds to at least 75% of the smallest distance between the insert 7 and the upper part 2 in the area of the second tube connection 14 and thus of the tube 12 .
- the insert 7 has a jacket tube 15 that extends in parallel to the tube 12 .
- the inner diameter of the jacket tube 15 corresponds to the outer diameter of the second tube connection 14 .
- a labyrinth-like seal occurs between the second muffling chamber 9 and a chamber outside the suction muffler 1 .
- refrigerant gas wishing to escape from the second muffling chamber 9 to the outside will be guided over a relatively large length, so that a relatively good tightness is ensured.
- refrigerant gas from the second muffling chamber 9 cannot escape to the outside, practically no sound waves with large amplitudes can escape to the outside in this way.
- the jacket tube 15 has a bevel 16 , so that an annular chamber with a triangle-shaped cross-section is formed. Oil that is carried into the second muffling chamber 9 by the refrigerant gas and settles at the second tube connection 14 , then runs into the gap between the jacket tube 15 and the second tube connection 14 , thus further contributing to the tightness.
- the outlet 11 is arranged at an outlet channel 17 .
- the insert 7 has a passage 18 , which is arranged in a tube channel 19 .
- the tube channel 19 is also made in one piece with the insert 7 .
- the tube channel 19 lies on the same axis as the outlet channel 17 . Refrigerant gas flowing through the passage 18 and receiving a certain direction because of the tube channel 19 can pass into the outlet channel 17 without experiencing large losses.
- a space 20 is provided between the tube channel 19 and the outlet channel 17 , pulsations in the second muffling chamber 9 being able to propagate via said space 20 .
- An extension 21 of the tube 12 projects into the first muffling chamber, that is, it extends somewhat over the insert 7 .
- the tube 10 has an opening 22 , which lies opposite to a curved bottom wall 23 .
- the bottom part 3 has a gas guiding wall 24 .
- Refrigerant flowing into the first muffling chamber 8 through the tube 12 is guided along the gas guiding wall 24 .
- the cross-section of the gas guiding wall 24 corresponds to a part of the tube 12 .
- the refrigerant gas led to the curved bottom wall 23 may here emit a part of the oil contained in it.
- the refrigerant gas drives this oil to a guiding surface 25 , which is, at least partly, arranged in parallel to the axis of the passage 18 or the tube channel 19 .
- the refrigerant gas flowing into the passage 18 again takes along the oil from the guiding surface 25 , so that it is passed on the circuit.
- the risk that oil will settle inside the suction muffler 1 is relatively small.
- the design described provides an easy way of ensuring that a transition from the first muffling chamber 8 to the second muffling chamber 9 only takes place via the passage 18 . Further “leakages” do not exist.
- the second muffling chamber 9 is practically closed in the outwardly direction.
- a “leakage channel” with a very small cross-section and a large length may exist, which extends along the outside of the tube 12 . As, however, this leakage channel opens towards the outside, that is, into the inside of the compressor case, this will have practically no negative influence on the muffling properties of the suction muffler.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
- Applicant hereby claims foreign priority benefits under U.S.C. § 119 from German Patent Application No. 10 2008 014 328.6 filed on Mar. 14, 2008, the contents of which are incorporated by reference herein.
- The invention concerns a suction muffler for a hermetically enclosed refrigerant compressor with a housing having, between an inlet and an outlet, a first muffling chamber in the flow direction and a second muffling chamber in the flow direction, an insert being arranged between the muffling chambers, the insert having a passage that connects the muffling chambers to each other.
- Such a suction muffler is, for example, known from DE 199 23 734 C2. The housing has an upper part and a bottom part. The insert is fixed between the upper part and the bottom part. In the bottom part the inlet is arranged, which opens via an inlet channel into the first muffling chamber. With a space, the inlet channel extends into a tube channel, which forms the passage in the insert. The tube channel again extends into an outlet channel, a space being provided between the tube channel and the outlet channel, the space connecting the outlet to the second muffling chamber.
- Such an embodiment is known from DE 101 28 225 C1. Also here a flow path is provided, which extends straightly from an inlet channel to an outlet channel and is connected to both muffling chambers.
- Such suction mufflers for refrigerant compressors have proved to be efficient. They reduce noise that occurs because of pressure pulsations during suction of the refrigerant gas by the refrigerant compressor.
- The suction muffler is usually arranged at the cylinder head of the refrigerant compressor. The refrigerant compressor is arranged in a hermetically enclosed case and is usually supported in relation to the case by means of springs. The case comprises an oil sump serving as reservoir, for lubrication of the moving parts of the compressor with oil. During compressor operation and for a certain time after standstill a part of the refrigerant is dissolved in the oil. Because of the high pressure in the case volume, this mixture remains after standstill of the system. The mixture will not be separated until the system is restarted. The vacuum arising in the case volume will separate the refrigerant from the oil, which shows in a short foaming of the refrigerant-oil mixture.
- There is a tendency towards building smaller compressors. The smaller the compressor is, the more utilisation space is available in a refrigeration appliance, for example a refrigerator or a freezer. One method of reducing the dimensions is to reduce the height of the refrigerant compressor.
- With the reduction of the height of the compressor, however, the suction muffler comes relatively close to the oil sump, meaning that there is a risk that to a higher degree oil from the oil sump will be drawn into the suction flow of refrigerant. However, a too heavy load of oil in the refrigerant gas should be avoided.
- The invention is based on the task of ensuring a certain freedom for the positioning of the suction muffler in the compressor case.
- With a suction muffler as mentioned in the introduction, this task is solved in that the insert has a tube that is led through the second muffling chamber, one end of the tube being led through the housing, the other end opening into the first muffling chamber.
- With this embodiment, it is possible to shift the inlet from the bottom side of the housing and to arrange it in a different position. If, for example, the inlet can be positioned at the upper side of the housing or at least in the upper half of the housing, the suction muffler can be arranged substantially closer to the oil sump than it would be the case with an inlet in the lower half of the suction muffler. The inlet and the outlet can then be arranged in the same half of the suction muffler, for example both in the upper half, or even at the upper side of the housing. In this case, the housing can even be permitted to dip somewhat into the oil sump. The suction muffler is then made as a “schnorkel” suction muffler. By means of the tube, the refrigerant gas sucked in is led through the second muffling chamber. In this connection, the tube path for the refrigerant gas surrounded by the tube is sealed in relation to the second muffling chamber, so that no impermissible mixing between the gas sucked in and the gas in the second muffling chamber can take place. Also, sound waves from the second muffling chamber cannot right away trespass into the tube path, so that a sound propagation through the tube is avoided.
- Preferably, the housing has an outwardly projecting first tube connection, the tube being led through said connection. As the suction muffler is a component of a refrigerant compressor, which is manufactured in large numbers, the accuracy of the parts, from which the suction muffler is manufactured, can only to a certain degree be increased. It is therefore assumed that a small clearance will remain, when the tube is led through the housing. This clearance causes that a small opening occurs between the tube and the housing, for example in the form of an annular gap. If a tube connection is used, the axial length of this annular gap will be increased, so that the annular gap can provide a substantial flow resistance, and thus also a resistance against the escape of sound waves from the second muffling chamber to the outside. As this opening, that is, the annular gap, opens outwards, that is, towards the inside of the compressor case, the efficiency of the suction muffler is practically not negatively influenced. Small openings or holes, opening towards the outside, change the acoustic properties of the suction muffler only to a small degree.
- Preferably, the housing has an inwardly guided, second tube connection, through which the tube is led. Thus, the sealing “path” between the outside of the tube and the inside of the housing is extended. The resulting axial length of the annular gap provides a relatively good sealing, which prevents refrigerant gas from the second muffling chamber from escaping to the outside. Thus, also a sound propagation towards the outside is kept small.
- Preferably, the second tube connection has a length, which corresponds to at least 75% of the smallest distance between the insert and the housing in the area of the second tube connection. Preferably, the second tube connection will even be so long that it practically reaches the insert. The larger the length of the second tube connection is, the better is the sealing achieved between the second tube connection and the tube.
- Preferably, the insert has a jacket tube, which surrounds the second tube connection, at least on part of its length. Together, the jacket tube and the tube form an annular gap, into which the second tube connection of the housing projects. The inner diameter of the jacket tube is adapted to the outer diameter of the second tube connection. The inner diameter of the second tube connection is adapted to the outer diameter of the tube, small tolerances being acceptable. This embodiment provides some kind of labyrinth seal, which provides a relatively good protection against an escape of refrigerant gas from the second muffling chamber and thus a propagation of sound waves from the second muffling chamber to the outside. Further, after a certain operation time, a certain amount of oil will gather between the jacket tube and the second tube connection, which further improves the sealing between the jacket tube and the second tube connection.
- It is preferred that the jacket tube has a length, which corresponds to at least 75% of the shortest distance between the insert and the housing in the area of the second tube connection. Thus, a relatively large part of the length of the second tube connection will be surrounded by the jacket tube. The larger the length, the better the sealing.
- Preferably, the tube projects through the insert. This means that a certain length of the tube extends into the first muffling chamber. In a manner of speaking, this can be utilised to guide the suction refrigerant gas into the first muffling chamber. This guiding can be utilised to achieve improved muffling properties.
- Preferably, the passage between the muffling chambers is formed by a tube channel, which is arranged in the insert and projects over the insert on both sides. A tube channel as such is known from DE 101 28 225 C1 mentioned in the introduction. With the tube channel it can be provided that the refrigerant gas is guided when passing from the first muffling chamber into the second muffling chamber.
- It is particularly advantageous, if the tube channel and an outlet channel are arranged in series in the flow direction along the same axis. Between the tube channel and the outlet channel, a space exists, which ensures a connection to the second muffling chamber. Sound waves occurring because of pulsations can then propagate into the second muffling chamber without penetrating to the outside. However, the refrigerant gas from the first muffling chamber will be sucked into the refrigerant compressor with relatively little resistance.
- Preferably, the tube has an opening, which lies opposite a curved bottom wall of the housing. The suction refrigerant gas, which flows in through the tube, can then be redirected by a vortex formation causing only small losses. The curved bottom wall then leads the suction refrigerant gas to the tube channel and thus in the direction of the outlet.
- Preferably, in the first muffling chamber the housing has a gas guiding wall, which surrounds the tube on a part of its circumference. If the suction muffler is mounted so that it is partly submerged into the oil sump of the case, it is difficult to provide oil outlet openings in the suction muffler. Therefore, the gas guiding wall ensures that practically no hollows or recirculation zones are present, in which larger oil amounts could gather. On the contrary, the gas guiding wall ensures that oil sucked in by the refrigerant gas will eventually also be taken out of the suction muffler by the refrigerant gas. A small amount of oil in the suction muffler, however, is not harmful.
- It is preferred that the curved bottom wall extends into a guiding surface, which is at least partly arranged in parallel with the axis. If oil should gather, it is driven by the refrigerant gas along the bottom wall to the guiding surface and from here into the passage, so that it reaches the outlet.
- In the following, the invention is explained on the basis of a preferred embodiment in connection with the drawings, showing:
- Only FIGURE is a schematic cross-section through a suction muffler.
- A
suction muffler 1 has a housing with anupper part 2 and abottom part 3. Theupper part 2 has a circumferential flange 4, which is fixed to acircumferential flange 5 on the bottom part, for example by bonding or welding. Between the twoflanges 4, 5 anadditional flange 6 of theinsert 7 is arranged and fixed, which separates the housing into afirst muffling chamber 8 and asecond muffling chamber 9. The order of the mufflingchambers inlet 10 for the refrigerant to anoutlet 11 for the refrigerant. - The
upper part 2, thebottom part 3 and theinsert 7 are made of a plastic material with poor heat conductivity, for example PBTP. - The
insert 7 has atube 12, which is in the present case made in one piece with theinsert 7. However, thetube 12 can also be connected to theinsert 7 in other ways. - The
tube 12 is led through thesecond muffling chamber 9 and through theupper part 2 to the outside. In the area, where thetube 12 projects from theupper part 2, the upper part has an outwardly extendingfirst tube connection 13, whose inner diameter does, with certain manufacturing-caused tolerances, correspond to the outer diameter of thetube 12. - The outwardly extending
first tube connection 13 extends inwardly into asecond tube connection 14, which projects inwardly from theupper part 2 and extends into thesecond muffling chamber 9. The inner diameter of thesecond tube connection 14 corresponds to the outer diameter of thetube 12. Thesecond tube connection 14 extends approximately up to theinsert 7. At least, it has a length, which corresponds to at least 75% of the smallest distance between theinsert 7 and theupper part 2 in the area of thesecond tube connection 14 and thus of thetube 12. - The
insert 7 has ajacket tube 15 that extends in parallel to thetube 12. The inner diameter of thejacket tube 15 corresponds to the outer diameter of thesecond tube connection 14. In this way, a labyrinth-like seal occurs between thesecond muffling chamber 9 and a chamber outside thesuction muffler 1. Also if, due to existing tolerances, small gaps should appear between thetube 12, thefirst tube connection 13, thesecond tube connection 14 and thejacket tube 15, refrigerant gas wishing to escape from thesecond muffling chamber 9 to the outside will be guided over a relatively large length, so that a relatively good tightness is ensured. As long as refrigerant gas from thesecond muffling chamber 9 cannot escape to the outside, practically no sound waves with large amplitudes can escape to the outside in this way. - At the end facing the
upper part 2, thejacket tube 15 has abevel 16, so that an annular chamber with a triangle-shaped cross-section is formed. Oil that is carried into thesecond muffling chamber 9 by the refrigerant gas and settles at thesecond tube connection 14, then runs into the gap between thejacket tube 15 and thesecond tube connection 14, thus further contributing to the tightness. - The
outlet 11 is arranged at anoutlet channel 17. Theinsert 7 has apassage 18, which is arranged in atube channel 19. Thetube channel 19 is also made in one piece with theinsert 7. Thetube channel 19 lies on the same axis as theoutlet channel 17. Refrigerant gas flowing through thepassage 18 and receiving a certain direction because of thetube channel 19 can pass into theoutlet channel 17 without experiencing large losses. Aspace 20 is provided between thetube channel 19 and theoutlet channel 17, pulsations in thesecond muffling chamber 9 being able to propagate via saidspace 20. - An
extension 21 of thetube 12 projects into the first muffling chamber, that is, it extends somewhat over theinsert 7. Thetube 10 has anopening 22, which lies opposite to acurved bottom wall 23. In continuation of thetube 12 thebottom part 3 has agas guiding wall 24. Refrigerant flowing into thefirst muffling chamber 8 through thetube 12 is guided along thegas guiding wall 24. The cross-section of thegas guiding wall 24 corresponds to a part of thetube 12. The refrigerant gas led to thecurved bottom wall 23 may here emit a part of the oil contained in it. The refrigerant gas drives this oil to a guidingsurface 25, which is, at least partly, arranged in parallel to the axis of thepassage 18 or thetube channel 19. The refrigerant gas flowing into thepassage 18 again takes along the oil from the guidingsurface 25, so that it is passed on the circuit. The risk that oil will settle inside thesuction muffler 1 is relatively small. - The design described provides an easy way of ensuring that a transition from the
first muffling chamber 8 to thesecond muffling chamber 9 only takes place via thepassage 18. Further “leakages” do not exist. - With regard to sound, the
second muffling chamber 9 is practically closed in the outwardly direction. A “leakage channel” with a very small cross-section and a large length may exist, which extends along the outside of thetube 12. As, however, this leakage channel opens towards the outside, that is, into the inside of the compressor case, this will have practically no negative influence on the muffling properties of the suction muffler. - While the present invention has been illustrated and described with respect to a particular embodiment thereof, it should be appreciated by those of ordinary skill in the art that various modifications to this invention may be made without departing from the spirit and scope of the present invention.
Claims (12)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102008014328.6 | 2008-03-14 | ||
DE102008014328.6A DE102008014328B4 (en) | 2008-03-14 | 2008-03-14 | Suction muffler for a hermetically sealed refrigerant compressor |
Publications (1)
Publication Number | Publication Date |
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US20090257892A1 true US20090257892A1 (en) | 2009-10-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/400,856 Abandoned US20090257892A1 (en) | 2008-03-14 | 2009-03-10 | Suction muffler for a hermetically enclosed refrigerant compressor |
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US (1) | US20090257892A1 (en) |
CN (1) | CN101532483B (en) |
DE (1) | DE102008014328B4 (en) |
IT (1) | IT1393438B1 (en) |
Cited By (5)
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JP2015500434A (en) * | 2011-12-15 | 2015-01-05 | ワールプール・エシ・ア | Acoustic filter suitable for reciprocating compressors |
WO2015013788A1 (en) * | 2013-07-30 | 2015-02-05 | Whirlpool S.A. | Acoustic attenuator device for compressors |
WO2016054710A1 (en) * | 2014-10-08 | 2016-04-14 | Whirlpool S.A. | Acoustic attenuating device for compressors |
US11293420B2 (en) * | 2016-08-23 | 2022-04-05 | Secop Gmbh | Suction muffler |
US20220170448A1 (en) * | 2020-11-30 | 2022-06-02 | Anhui Meizhi Compressor Co., Ltd. | Suction muffler |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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AT12789U1 (en) * | 2010-05-04 | 2012-11-15 | Acc Austria Gmbh | PRESSURE SILENCER FOR A HERMETICALLY CAPACITATED REFRIGERANT COMPRESSOR |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2133875A (en) * | 1937-02-17 | 1938-10-18 | Gen Electric | Refrigerating machine |
US3750840A (en) * | 1968-10-08 | 1973-08-07 | Danfoss As | Sound absorber for compressors |
US3864064A (en) * | 1973-03-12 | 1975-02-04 | Sundstrand Corp | Suction muffler tube for compressor |
US4573880A (en) * | 1982-09-02 | 1986-03-04 | Sanyo Electric Co., Ltd. | Hermetically sealed motor compressor |
US4755108A (en) * | 1986-05-02 | 1988-07-05 | Empresa Brazileira de Compressores S/A Embraco | Suction system of hermetic refrigeration compressor |
US4759693A (en) * | 1986-07-09 | 1988-07-26 | Danfoss A/S | Suction sound damper |
US4960368A (en) * | 1988-07-29 | 1990-10-02 | Empresa Brasileira De Compressores S/A-Embraco | Suction system for hermetic compressor of refrigeration |
US5201640A (en) * | 1991-05-28 | 1993-04-13 | Empresa Brasileira De Compressores S/A -Embraco | Suction muffler assembly for hermetic compressors |
US5304044A (en) * | 1990-03-06 | 1994-04-19 | Matsushita Refrigeration Company | Hermetic compressor |
US5496156A (en) * | 1994-09-22 | 1996-03-05 | Tecumseh Products Company | Suction muffler |
US5584674A (en) * | 1993-04-24 | 1996-12-17 | Samsung Electronics Co., Ltd. | Noise attenuator of compressor |
US5971720A (en) * | 1996-08-21 | 1999-10-26 | Empresa Brasileira De Compressores | Suction muffler for a hermetic compressor |
US6358019B1 (en) * | 1999-05-22 | 2002-03-19 | Danfoss Compressors Gmbh | Suction sound damper for a hermetically encapsulated compressor |
US6361290B1 (en) * | 1999-04-15 | 2002-03-26 | Matsushita Refrigeration Company | Suction muffler and hermetic compressor |
US6415888B2 (en) * | 2000-06-12 | 2002-07-09 | Lg Electronics Inc. | Muffler |
US6715582B2 (en) * | 2001-03-23 | 2004-04-06 | Danfoss Compressors Gmbh | Suction muffler |
US20040071564A1 (en) * | 2002-09-25 | 2004-04-15 | Danfoss Compressors Gmbh | Cylinder head arrangement for a piston compressor |
US6763909B2 (en) * | 2001-06-11 | 2004-07-20 | Danfoss Compressors Gmbh | Suction muffler |
US20050002798A1 (en) * | 2003-05-24 | 2005-01-06 | Danfoss Compressor Gmbh | Refrigerant compressor |
US6845843B2 (en) * | 2002-02-09 | 2005-01-25 | Danfoss Compressor Gmbh | Suction muffler for a refrigerating machine |
US7316291B2 (en) * | 2003-05-24 | 2008-01-08 | Danfoss Compressors Gmbh | Suction muffler for a hermetic refrigerant compressor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100386269B1 (en) * | 2001-01-11 | 2003-06-02 | 엘지전자 주식회사 | Muffler of compressor |
CN2895794Y (en) * | 2005-08-30 | 2007-05-02 | 乐金电子(天津)电器有限公司 | Air-suction silencer of compressor |
-
2008
- 2008-03-14 DE DE102008014328.6A patent/DE102008014328B4/en active Active
-
2009
- 2009-03-10 US US12/400,856 patent/US20090257892A1/en not_active Abandoned
- 2009-03-12 IT ITTO2009A000185A patent/IT1393438B1/en active
- 2009-03-13 CN CN2009101296350A patent/CN101532483B/en active Active
Patent Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2133875A (en) * | 1937-02-17 | 1938-10-18 | Gen Electric | Refrigerating machine |
US3750840A (en) * | 1968-10-08 | 1973-08-07 | Danfoss As | Sound absorber for compressors |
US3864064A (en) * | 1973-03-12 | 1975-02-04 | Sundstrand Corp | Suction muffler tube for compressor |
US4573880A (en) * | 1982-09-02 | 1986-03-04 | Sanyo Electric Co., Ltd. | Hermetically sealed motor compressor |
US4755108A (en) * | 1986-05-02 | 1988-07-05 | Empresa Brazileira de Compressores S/A Embraco | Suction system of hermetic refrigeration compressor |
US4911619A (en) * | 1986-05-02 | 1990-03-27 | Empressa Braziliera De Compressores | Suction system of hermetic refrigeration compressor |
US4759693A (en) * | 1986-07-09 | 1988-07-26 | Danfoss A/S | Suction sound damper |
US4960368A (en) * | 1988-07-29 | 1990-10-02 | Empresa Brasileira De Compressores S/A-Embraco | Suction system for hermetic compressor of refrigeration |
US5304044A (en) * | 1990-03-06 | 1994-04-19 | Matsushita Refrigeration Company | Hermetic compressor |
US5201640A (en) * | 1991-05-28 | 1993-04-13 | Empresa Brasileira De Compressores S/A -Embraco | Suction muffler assembly for hermetic compressors |
US5584674A (en) * | 1993-04-24 | 1996-12-17 | Samsung Electronics Co., Ltd. | Noise attenuator of compressor |
US5496156A (en) * | 1994-09-22 | 1996-03-05 | Tecumseh Products Company | Suction muffler |
US5971720A (en) * | 1996-08-21 | 1999-10-26 | Empresa Brasileira De Compressores | Suction muffler for a hermetic compressor |
US6361290B1 (en) * | 1999-04-15 | 2002-03-26 | Matsushita Refrigeration Company | Suction muffler and hermetic compressor |
US6358019B1 (en) * | 1999-05-22 | 2002-03-19 | Danfoss Compressors Gmbh | Suction sound damper for a hermetically encapsulated compressor |
US6415888B2 (en) * | 2000-06-12 | 2002-07-09 | Lg Electronics Inc. | Muffler |
US6715582B2 (en) * | 2001-03-23 | 2004-04-06 | Danfoss Compressors Gmbh | Suction muffler |
US6763909B2 (en) * | 2001-06-11 | 2004-07-20 | Danfoss Compressors Gmbh | Suction muffler |
US6845843B2 (en) * | 2002-02-09 | 2005-01-25 | Danfoss Compressor Gmbh | Suction muffler for a refrigerating machine |
US20040071564A1 (en) * | 2002-09-25 | 2004-04-15 | Danfoss Compressors Gmbh | Cylinder head arrangement for a piston compressor |
US20050002798A1 (en) * | 2003-05-24 | 2005-01-06 | Danfoss Compressor Gmbh | Refrigerant compressor |
US7316291B2 (en) * | 2003-05-24 | 2008-01-08 | Danfoss Compressors Gmbh | Suction muffler for a hermetic refrigerant compressor |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015500434A (en) * | 2011-12-15 | 2015-01-05 | ワールプール・エシ・ア | Acoustic filter suitable for reciprocating compressors |
WO2015013788A1 (en) * | 2013-07-30 | 2015-02-05 | Whirlpool S.A. | Acoustic attenuator device for compressors |
US20160186735A1 (en) * | 2013-07-30 | 2016-06-30 | Whirlpool S.A. | Acoustic attenuator device for compressors |
US9752564B2 (en) * | 2013-07-30 | 2017-09-05 | Whirlpool S.A. | Compressor with an acoustic attenuator device |
WO2016054710A1 (en) * | 2014-10-08 | 2016-04-14 | Whirlpool S.A. | Acoustic attenuating device for compressors |
CN107110141A (en) * | 2014-10-08 | 2017-08-29 | 惠而浦股份有限公司 | Acoustic attenuation device for compressor |
US10502198B2 (en) | 2014-10-08 | 2019-12-10 | Embraco—Industria De Compressores E Solucoes Em Refrigeracao Ltda. | Acoustic attenuating device for compressors |
US11293420B2 (en) * | 2016-08-23 | 2022-04-05 | Secop Gmbh | Suction muffler |
US20220170448A1 (en) * | 2020-11-30 | 2022-06-02 | Anhui Meizhi Compressor Co., Ltd. | Suction muffler |
US11846276B2 (en) * | 2020-11-30 | 2023-12-19 | Anhui Meizhi Compressor Co., Ltd. | Suction muffler |
Also Published As
Publication number | Publication date |
---|---|
CN101532483B (en) | 2013-02-06 |
CN101532483A (en) | 2009-09-16 |
IT1393438B1 (en) | 2012-04-20 |
ITTO20090185A1 (en) | 2009-09-15 |
DE102008014328B4 (en) | 2015-01-29 |
DE102008014328A1 (en) | 2009-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DANFOSS COMPRESSORS GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SVENDSEN, CHRISTIAN;NIELSEN, SVEN ERIC;REEL/FRAME:022925/0462 Effective date: 20090528 |
|
AS | Assignment |
Owner name: SECOP GMBH (FORMERLY KNOWN AS DANFOSS HOUSEHOLD CO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DANFOSS FLENSBURG GMBH (FORMERLY KNOWN AS DANFOSS COMPRESSORS GMBH);REEL/FRAME:026100/0634 Effective date: 20110406 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |