EP3608541A1 - Noise reducing silencer with spiral chambers for a compressor - Google Patents
Noise reducing silencer with spiral chambers for a compressor Download PDFInfo
- Publication number
- EP3608541A1 EP3608541A1 EP19182173.5A EP19182173A EP3608541A1 EP 3608541 A1 EP3608541 A1 EP 3608541A1 EP 19182173 A EP19182173 A EP 19182173A EP 3608541 A1 EP3608541 A1 EP 3608541A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silencer
- spiral
- compressor
- core
- housing
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
- F04B53/004—Noise damping by mechanical resonators
-
- 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
-
- 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
- F04B35/04—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 the means being electric
-
- 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
- F04B39/005—Pulsation and noise damping means with direct action on the fluid flow using absorptive materials
-
- 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
- F04B39/16—Filtration; Moisture separation
-
- 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
- F04C29/065—Noise dampening volumes, e.g. muffler chambers
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F04C29/063—Sound absorbing materials
Abstract
Description
- This application claims priority to provisional application number
62/717,175, filed August 10, 2018 62/719,726, filed August 20, 2018 - The present invention relates generally to a compressor, and more particularly to a silencer for reducing the noise emitted from certain compressors, especially reciprocating compressors or piston compressors.
- Compressors typically include a motor that drives a compressor element to pressurize air. The compressor element can be a reciprocating compressor or piston compressor, a centrifugal compressor, a scroll compressor, a screw compressor having male and female compressor elements, or the like. All such compressor elements have a suction side for receiving inlet air, e.g., through an inlet air filter, and an outlet side for discharging the compressed air to a tank and/or distribution header for distributing the compressed air to a network of users. During the compression process, due to the large volume of air provided through the air inlet of the compressor, noise is generated at the air inlet or suction side.
- For example, in a reciprocating compressor, which is widely used in various industrial and domestic applications, the motor is used to drive a crankshaft that moves pistons in a reciprocating manner, where gas enters the suction side, typically through an inlet manifold, is compressed via the pistons being driven in a reciprocating manner, and then discharged at high pressure into a tank.
- However, during operation of the reciprocating compressor, noise is emitted from the air inlet or suction side of the reciprocating compressor when the air is drawn through the inlet manifold, e.g., due to the turbulence of the air moved through the inlet. Typically, the prior art reciprocating compressor has little to no provisions to reduce the noise it generates or employs conventional structures to reduce this noise. For example, one conventional structure draws the inlet air through a large, bulky, and remotely mounted baffling box, where such structure is costly and restricts the inlet air flow by employing a long tube that connects the suction side or air inlet of the compressor to the large baffling box, which reduces the efficiency of the compressor.
- In view of such drawbacks, there is a need to provide a simpler, smaller, and more cost-effective structure for reducing the noise generated at the air inlet of compressors that does not reduce the efficiency of the compressor.
- The present invention is provided to solve the deficiencies of the prior art by providing improvements over the prior art in several ways. For example, it is an object of the present invention to provide a silencer that costs less, is much smaller, and can be attached directly to the compressor air inlet to reduce or eliminate restriction to the inlet air flow.
- In order to achieve the objectives of the present invention, a noise reducing silencer is provided that is attached directly to the compressor air inlet of a compressor. The noise reducing silencer has a silencer core which reduces and/or eliminates the noise at the air inlet to provide a quieter compressor without adding significant extra costs and without significantly reducing efficiency. In one embodiment of the invention, the silencer comprises a housing, a silencer core, where the silencer core comprises two spiral chambers that are stacked on each other. In another embodiment, the two spiral chambers comprise hollow walls forming the spiral chambers, where the hollow walls comprise sound absorbing material. In order to reduce costs and size, the noise reducing silencer can be incorporated into a conventional air filter for a compressor and/or include filtering elements. The noise reducing silencer may be attached directly to the compressor intake/air inlet. The noise reducing silencer can also be attached to the air filter as a separate element.
- The spiral chambers can be made of metal, plastic, a composite material, or a combination thereof or include material to dampen the noise.
- The features and objects of the present invention are more clearly understood from the detailed description of preferred embodiments taken in conjunction with the accompanying drawings, in which:
-
Fig. 1 illustrates a perspective view of a compressor installation with a noise reducing silencer; -
Fig. 2 illustrates an exploded perspective view of a noise reducing silencer according to a first embodiment of the present invention. -
Fig. 3 illustrates the construction of the spiral chambers according to a first embodiment of the invention. -
Fig. 4 illustrates an exploded perspective view of a noise reducing silencer according to a second embodiment of the present invention -
Fig. 5A and Fig. 5B illustrate the construction of the spiral chambers according to a second embodiment of the invention. -
Fig. 6A andFig. 6B illustrate an exploded perspective view of a noise reducing silencer according to a third embodiment of the present invention. -
Fig. 7A, Fig. 7B, and Fig. 7C illustrate the construction of the spiral chambers according to a third embodiment of the invention. -
Fig. 8A, Fig. 8B, and Fig. 8C illustrate the construction of the spiral chambers according to a fourth embodiment of the invention. -
Fig. 9A illustrates a perspective cross-section view of a noise reducing silencer according to a fourth embodiment of the invention. -
Fig. 9B illustrates a cross-section view of a noise reducing silencer according to a fourth embodiment of the invention. - In the various figures, similar elements are provided with similar reference numbers. It should be noted that the drawing figures are not necessarily drawn to scale, or proportion, but instead are drawn to provide a better understanding of the components thereof, and are not intended to be limiting in scope, but rather provide exemplary illustrations.
- The present invention will be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto and can be combined interchangeably with certain features in the different embodiments.
-
FIG. 1 illustrates a compressor installation, which can be a single or two stage reciprocating compressor or piston compressor, a centrifugal compressor, a scroll compressor, a screw compressor having male and female compressor elements, or the like, that includes anoise reducing silencer 200 according to the present invention. In this embodiment, thecompressor element 10 is illustrated as a reciprocating compressor having a piston cylinder. Other embodiments may comprise multiple piston cylinders, for compressing air received from anair inlet 12 of thecompressor element 10. Thenoise reducing silencer 200 is provided at theair inlet 12 for filtering the inlet air. Thecompressor element 10 is driven by amotor 20, e.g., a gas driven or electrically driven motor, that rotates the crankshaft to reciprocally rotate piston(s) to compress the air in the piston cylinder(s) of thecompressor element 10. The compressed air is then discharged from thecompressor element 10 to be stored in a tank or distributed to users. - The
noise reducing silencer 200 is provided at theair inlet 12 to reduce and/or eliminate the noise generated when the air is suctioned or drawn into theair inlet 12 of thecompressor element 10. Thenoise reducing silencer 200 can be used to replace the standard air filters used for reciprocating air compressors by including air filter media in the noise reducing silencer, or be attached to the standard air filters, e.g., series connection. - As seen in
Fig. 2 , in one embodiment of the invention, thenoise reducing silencer 200 includes ahousing 210 that includes abase 212 andcover 214, where thecover 214 includes at least one opening 216 to allow air to be drawn into thenoise reducing silencer 200. Asilencer core 220 is provided within thehousing 210 for guiding the air from an inlet of the housing (through opening 216) to an exit of the housing throughoutlet 2121 of thebase 212. Theoutlet 2121 of thebase 212 is then configured to be connected to the air inlet of a compressor, e.g., screw fittings, welding, pinned connection, cam fittings, compression fitting, etc. - In this embodiment of the invention, the
noise reducing silencer 200 includes asilencer core 220 that comprises firstspiral chamber 222, and secondspiral chamber 224, which are rigidly connected to and separated bysupport 226. Thus,spiral chambers First end seal 249 abuts firstspiral chamber 222, and guides air flow from opening 216 through the aperture in the center offirst end seal 249 and into the center of firstspiral chamber 222.Second end seal 250 abuts secondspiral chamber 224, and guides airflow from the center of secondspiral chamber 224 through the aperture in the center ofsecond end seal 250 and intooutlet 2121 inbase 212.Base 212 and cover 214 may be provided with indentations to holdsilencer core 220 andfiltering element 240 in fixed positions. Each of thespiral chambers second spiral chamber 224 can be connected to a connecting element or channel provided along an inner side of the windings of thesecond spiral chamber 224 for connecting to theoutlet 2121 of thebase 212. While twospiral chambers - The end seals 249, 250 are constructed of a composite material or rubber to seal the spiral chambers and direct the air flow through the
silencer core 220. Additionally, afiltering element 240 can be placed around thesilencer core 220.Filtering element 240 includes afilter screen 244 to provide a supporting surface for thefilter 242. Thefilter 242 can include a variety of filtering media for example, coalescing filters, particulate filters, and carbon filters, to remove at least solid particles, liquids, aerosols, hydrocarbon vapours, etc. The filtering element can be further configured to reduce high frequency noise, e.g., based on the material and construction of the filtering element, e.g., using noise reducing material such as composite material and firmly mounting the filter screen. Thebase 212 of thenoise reducing silencer 200 is also configured so that it can be coupled to the air intake port, e.g., air inlet, of the compressor, for example, by being fit into the air intake port of the compressor. The size of the assembled noise reducing silencer may be closely matched to the size of the standard air filters that are typically used for reciprocating air compressors. - In the embodiment of the invention that includes the
filtering element 240, thenoise reducing silencer 200 is constructed in a way so that the at least two spiral chambers are provided centrally in thehousing 210. Thefilter screen 244 is then provided along an outer side and surroundingsecond spiral chamber 224 of the spirally shapedsilencer core 220, and thefilter 242 is provided along an outer surface of thefilter screen 244. Thehousing 210,base 212, and cover 214 enclose the elements of thenoise reducing silencer 200. - The operation of the
noise reducing silencer 200 is provided as follows: Air is drawn through theopening 216 in thecover 214 into thenoise reducing silencer 200 centrally through thefirst end seal 249 and through the first spiral chamber inlet 227 (shown inFig. 3 ) of thefirst spiral chamber 222 provided along the center of thefirst spiral chamber 222. After passing through thefirst spiral chamber 222, the air exits the outer winding. A space may be provided between the exterior surface offilter element 240 and the interior surface ofhousing 210, whereby air flows out of firstspiral chamber 222, through the space, throughfilter element 240, through second spiral chamber inlet 228 (shown inFig. 3 ), and intosecond spiral chamber 224.Filter element 240 preferably abutssupport plate 226. After the air enters into thesecond spiral chamber 224 through secondspiral chamber inlet 228, the air passes through thesecond spiral chamber 224, and exits thespiral chamber 224 centrally, passes through the aperture in the center ofsecond end seal 250 and through theoutlet 2121 of thebase 212. That is, air is flowed in series through thefirst spiral chamber 222 and then through thesecond spiral chamber 224. - Typically, in such compressor elements, noise is generated at the air inlet due to the suction of air, however, in the present invention, the noise from the suction of air is reduced and/or eliminated by the
noise reducing silencer 200. Without limiting the invention by theory, it is understood that thespiral chambers spiral chambers 220. The number of windings that are appropriate depends on the application and volume of air to be passed through the spirally shapedsilencer core 220. In other words, it is appreciated that this stacked dual chamber reduces air flow restriction to the compressor by not only providing a wider inlet opening, but reduces the noise by creating an extended and indirect path for the noise generated at the air inlet of the compressor to travel. -
Fig. 3 illustrates that firstspiral chamber 222 is provided with firstspiral inlet 227, and secondspiral chamber 224 is provided with secondspiral inlet 228. The dimensions of thespiral chambers silencer core 220 may be configured to reduce noise and provide an increased amount of air flow into thenoise reducing silencer 200, e.g., reduce the air flow restriction by having wider inlet openings. - Noise reduction can be further enhanced by coating the spiral chambers with a sound absorbing material, such as sound proofing paint or gel, foam, fiberglass, ceramics or the like. This concept can be stacked for increased noise reduction. The end seals 249, 250 can also be coated with the sound absorbing material for further noise reduction.
- The spirally shaped
silencer core 220 can be made of a composite material, such as plastic, rubber, metal, carbon, natural fibers, fiberglass, or a combination thereof, to absorb a broad spectrum of frequencies and can further include porous or corrugated tubes or foams inside the spirallywound silencer core 220 to further absorb noise. -
Fig. 4 illustrates a second embodiment of the invention. Similar to the first embodiment, this second embodiment includes asilencer core 420 that comprisesspiral chambers support 426. - Specifically, as illustrated in
Fig. 4 , thenoise reducing silencer 400 includes ahousing 410 that includes abase 412 and cover 414, where thecover 414 includes anopening 416. Thesilencer core 420 is made up of firstspiral chamber 422 and secondspiral chamber 424 that are rigidly connected to and separated bysupport 426.Noise reducing silencer 400 is provided within thehousing 410 for guiding the air from an inlet of the housing (through opening 416) to an exit of the housing throughoutlet 4121 of thebase 412.First end seal 449 abuts firstspiral chamber 422, and guides air flow from opening 416 incover 414 through the aperture in the center offirst end seal 449 and into the center of firstspiral chamber 422.Second end seal 450 abuts secondspiral chamber 424, and guides air flow from the center of secondspiral chamber 424 through the aperture in the center ofsecond end seal 450 and intooutlet 4121 inbase 412. Additionally, afiltering element 440 is placed aroundsecond spiral chamber 424 of thesilencer core 420 and includes afilter screen 444 to provide a supporting surface for thefilter 442, where the filtering element can be further configured to reduce high frequency noise, e.g., based on the material and construction of the filtering element, e.g., using noise reducing material such as composite material and firmly mounting the filter screen. A space may be provided between the exterior surface offilter element 440 and the interior surface ofhousing 410, whereby air flows out of firstspiral chamber 422, through the space, throughfilter element 440, through second spiral chamber inlet 428 (shown inFig. 5A ), and intosecond spiral chamber 424.Filter element 440 preferably abutssupport plate 426.Base 412 and cover 414 may be provided with indentations to holdsilencer core 420 andfiltering element 440 in fixed positions. Thebase 412 of thenoise reducing silencer 400 is also configured so that it can be coupled to the air inlet of the compressor, for example, by being compression fit into the air inlet of the compressor. Thehousing 410,base 412, and cover 414 form an enclosure for the noise reducing silencer. The size of the assembled noise reducing silencer may be closely matched to the size of the standard air filters that are typically used for reciprocating air compressors. -
Fig. 5A illustrates that firstspiral chamber 422 is provided with firstspiral inlet 427, and secondspiral chamber 424 is provided with secondspiral inlet 428. The dimensions of thespiral chambers silencer core 420 is configured to reduce noise and provide an increased amount of air flow into thenoise reducing silencer 400. Without limiting the invention by theory, similar to the first embodiment, in this second embodiment, thespiral chambers Fig. 5A . However, more or less windings are within the scope of the invention. For example, as seen inFig. 5B , thefirst spiral chamber 422 has a chamber inlet opening 427 and thesecond spiral chamber 424 has a chamber inlet opening 428 for receiving the air into the spiral chambers. Thesilencer core 420 has a centralhollow cylinder 429 for the air to exit centrally from the second spiral chamber. Noise reduction in this embodiment is further enhanced since the spiral chambers comprise hollow walls that are constructed as double walls which are filled with sound absorbing material. Furthermore, noise reduction can be further reduced by coating the spiral chambers with a sound absorbing material, such as sound proofing paint or gel, foam, fiberglass, ceramics or the like. This concept can be stacked for increased noise reduction. The end seals 449, 450 can also be coated with the sound absorbing material for further noise reduction. -
Figs. 6A and6B illustrate a third embodiment of the invention, where similar to the first embodiment, the third embodiment includes asilencer core 620 that comprisesspiral chambers - Specifically, as illustrated in
Fig. 6A , thenoise reducing silencer 600 includes a housing that includes abase 612 and cover 614, where thecover 614 includes anopening 616. Thesilencer core 620 is made up of firstspiral chamber 622 and second spiral chamber 624 (shown inFig. 6B ) that are rigidly connected to one another.Noise reducing silencer 600 is provided within the housing for guiding the air from an inlet of the housing (through opening 616) to an exit of the housing throughoutlet 6121 of thebase 612.First end seal 649 abuts firstspiral chamber 622, and guides air flow from opening 616 incover 614 through the aperture in the center offirst end seal 649 and into the center of firstspiral chamber 622.Second end seal 650 abuts secondspiral chamber 624, and guides airflow from thesecond spiral chamber 624 to afiltering element 640 provided on an outflow or downstream side of thesecond spiral chamber 624 of thesilencer core 620. Thefiltering element 640 can include a filter support orscreen 644 to provide a supporting surface for thefilter 642. Aspacer 630 may be provided between thesecond end seal 650 and thefiltering element 640. In this embodiment, air flows out of firstspiral chamber 622 from an air outlet of thefirst spiral chamber 622 that is connected to a second spiral chamber inlet 628 (shown inFig. 7B ), and into thesecond spiral chamber 624.Filtering element 640 preferably guides the air flow from the center of secondspiral chamber 624 through the aperture in the center ofsecond end seal 650 and intooutlet 6121 in base 612 (and optionally through the spacer 630). As seen inFig. 6B , thebase 612 of thenoise reducing silencer 600 is also configured so that it can be coupled to the air inlet of the compressor, for example, by being compression fit or threaded into the air inlet of the compressor. The housing which includesbase 612 and cover 614 forms an enclosure for the noise reducing silencer, where thebase 612 and cover 614 may be are connected via tabs connections or tongue and groove or other means. The size of the assembled noise reducing silencer may be closely matched to the size of the standard air filters that are typically used for reciprocating air compressors. -
Fig. 7A illustrates that firstspiral chamber 622 is provided with firstspiral inlet 627, and secondspiral chamber 624 is provided with secondspiral inlet 628, as seen inFig. 7B . As seen inFigs. 7B and 7C , the outlet of thefirst spiral chamber 622 is connected to thesecond spiral inlet 628. The dimensions of thespiral chambers silencer core 620 is configured to reduce noise and provide an increased amount of air flow into thenoise reducing silencer 600. Without limiting the invention by theory, similar to the first embodiment, in this third embodiment, thespiral chambers Fig. 7C . However, more or less windings are within the scope of the invention. -
Figs. 8A, 8B, 8C illustrate another embodiment of the invention, which is similar toFigs. 7A-7C , but includes the spiral chambers constructed with double walls, where the enclosure between the double walls can be filled with sound-absorbing material. Specifically, thefirst spiral chamber 822 is provided with firstspiral inlet 827, and secondspiral chamber 824 is provided with secondspiral inlet 828, as seen inFig. 8A . As seen inFigs. 8A and 8C , the outlet of thefirst spiral chamber 822 is connected to thesecond spiral inlet 828. The dimensions of thespiral chambers silencer core 820 is configured to reduce noise and provide an increased amount of air flow into the noise reducing silencer, as in the other embodiments. Without limiting the invention by theory, similar to the first embodiment, in this embodiment, thespiral chambers Fig. 8C . However, more or less windings are within the scope of the invention. -
Fig. 9A illustrates a perspective cross-section view of anoise reducing silencer 900 according to a fourth embodiment of the invention, which is provided withbase 912 andcover 914. In this embodiment, air flows from opening 916 into firstspiral chamber 922, and from first spiralchamber air outlet 931 into the secondspiral chamber inlet 928, and from secondspiral chamber 924,second end seal 950, and throughfilter 942, and then throughoutlet 9121 inbase 912. -
Fig. 9B illustrates a cross-section view of the noise reducing silencer according to the fourth embodiment of the invention, which is provided withbase 912 andcover 914. In this embodiment, air flows through firstspiral chamber 922, and through secondspiral chamber 924, and throughfilter 942 andfilter screen 944. - In view of such structure and features, the present invention solves the deficiencies of the prior art by providing a noise reducing silencer for a compressor installation which includes a silencer core that is configured to reduce and/or eliminate noise generated at an air inlet of a compressor. This is an improvement over the prior art in several ways. These features cost less than a baffle box provided at an air inlet of a compressor. The present invention allows a smaller size silencer due to the compact arrangement of the silencer core, and may be attached directly to the compressor inlet with the air filter to reduce or eliminate restriction to the inlet air flow.
- The invention discussed herein is directed to specific embodiments, but the design is not limited to the description of the exemplary invention but only by the scope of the appended claims. As a result, there are multiple embodiments that employ the beneficial characterises of the invention, each providing a different advantage and which are combinable and/or interchangeable with various aspects of the different embodiments of the invention that do not depart from the spirit and scope of the invention.
Claims (18)
- A noise reducing silencer for a compressor, said silencer comprising:a housing; anda spirally shaped silencer core provided in the housing and having a core inlet and a core outlet, wherein the silencer core comprises two spiral chambers that are stacked on each other.
- The silencer according to claim 1, further comprising end seals, wherein the housing comprises a base and a cover enclosing the housing and the end seals are provided to seal the spiral chambers from the base and the cover, respectively; and said silencer further comprising a connecting element configured to connect the outlet of the silencer core to an air inlet of the compressor.
- The silencer according to claim 2, further comprising a filter element and a filter screen configured in a way to support the filter element, wherein said filter element and filter screen are provided circumferentially around an outer side of at least one of the spiral chambers within the housing.
- The silencer according to claim 1, wherein the spiral chambers are coated with a sound absorbing material.
- The silencer according to claim 1, wherein the spiral chambers comprise at least two windings.
- The silencer according to claim 1, wherein the spiral chambers comprise hollow walls forming the spiral chambers which are filled with sound absorbing material.
- The silencer according to claim 1, further comprising a filter element and a filter support configured in a way to support the filter element, wherein said filter element and filter support are provided at an out flow side of the core outlet.
- The silencer according to claim 1, wherein the spirally shaped silencer core comprises composite material.
- The silencer according to claim 1, wherein the housing comprises a base and a cover for enclosing the housing, and wherein said housing comprises at least one opening for an inlet airflow.
- The silencer according to claim 1, wherein the inlet of the silencer core is provided centrally in a first spiral chamber of the spiral chambers and wherein the outlet of the silencer core is provided centrally in a second spiral chamber of the spiral chambers.
- The silencer according to claim 10, wherein an outlet of the first spiral chamber is provided as a lateral outlet along an outer surface of the first spiral chamber and an inlet of the second spiral chamber is provided as a lateral inlet along an outer surface of the second spiral chamber.
- A compressor installation comprising:a motor;a compressor element;and a noise reducing silencer connected to an air inlet of the compressor element, said silencer comprising a housing, a spirally shaped silencer core provided in the housing, and a connecting element that connects the outlet of the silencer core to the air inlet of the compressor element, said silencer core comprising spiral chambers that are stacked on each other, each having an inlet and an outlet,wherein the silencer core is configured in a way to reduce noise generated from a gas entering into the compressor during operation.
- The compressor installation according to claim 12, wherein the compressor is a reciprocating compressor, and the gas is air.
- The compressor according to claim 12, wherein the spiral chambers comprise hollow walls filled with sound absorbing material.
- A noise reducer for a compressor, said noise reducer comprising:a housing;a noise reducer core provided in the housing, said reducer core comprising a first spiral chamber configured to guide an air flow from the interior of the first spiral chamber to the exterior of the first spiral chamber.
- The noise reducer according to claim 15, wherein said reducer core further comprises a second spiral chamber configured to guide an air flow from the exterior of the second spiral chamber to the interior of the second spiral chamber.
- The noise reducer according to claim 16, further comprising a filtering element and said reducer configured to guide an air flow through said filtering element.
- The noise reducer according to claim 17, further comprising a support that abuts said first spiral chamber, said second spiral chamber, and said filtering element within said housing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862717175P | 2018-08-10 | 2018-08-10 | |
US201862719726P | 2018-08-20 | 2018-08-20 | |
US16/419,529 US20200049142A1 (en) | 2018-08-10 | 2019-05-22 | Noise reducing silencer with spiral chambers for a compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3608541A1 true EP3608541A1 (en) | 2020-02-12 |
Family
ID=67060323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19182173.5A Withdrawn EP3608541A1 (en) | 2018-08-10 | 2019-06-25 | Noise reducing silencer with spiral chambers for a compressor |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200049142A1 (en) |
EP (1) | EP3608541A1 (en) |
CN (1) | CN110821783A (en) |
BR (1) | BR102019016561A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113581296B (en) * | 2021-07-22 | 2023-07-07 | 湖北吉兴汽车部件有限公司 | Novel composite structure of automobile dry-method roof material |
BE1030618B1 (en) * | 2022-06-13 | 2024-01-23 | Atlas Copco Airpower Nv | Intake silencer for a volumetric compressor and volumetric compressor equipped with it |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR652102A (en) * | 1928-04-03 | 1929-03-05 | Noise damper for air intake | |
US3736074A (en) * | 1972-04-20 | 1973-05-29 | Worthington Cei | Inlet, filter and noise suppressor enclosure for compressing apparatus |
WO2011057481A1 (en) * | 2009-11-16 | 2011-05-19 | 浙江鸿友压缩机制造有限公司 | Low-noise oil-free lubrication air compressor |
CN105840467A (en) * | 2016-04-27 | 2016-08-10 | 马鞍山市巨峰压缩机制造有限公司 | Spiral noise eliminating air filter element device |
CN105484971B (en) * | 2016-01-14 | 2017-09-26 | 南京尚爱机械制造有限公司 | Buffer is filtered in a kind of air-breathing noise reduction |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818375A (en) * | 1928-05-02 | 1931-08-11 | Maxim Silencer Co | Silencer |
GB1358539A (en) * | 1970-06-19 | 1974-07-03 | Cowl Ind Ltd | Silencing apparatus |
BRPI0602962A (en) * | 2006-07-06 | 2008-02-26 | Whirlpool Sa | acoustic damper for refrigeration compressor |
US9339160B2 (en) * | 2012-07-04 | 2016-05-17 | Nilfisk Advance A/S | Silencer system for a vacuum motor in a suction cleaner |
KR20140041301A (en) * | 2012-09-27 | 2014-04-04 | 주식회사 트리즈 | Noise absorbent device |
CN203742942U (en) * | 2014-03-18 | 2014-07-30 | 成都陵川常友汽车部件制造有限公司 | Silencer for compressor inlet |
CN206191148U (en) * | 2016-11-22 | 2017-05-24 | 湖北汉塑管业集团有限公司 | Amortization spiral pipe with double -deck wall |
-
2019
- 2019-05-22 US US16/419,529 patent/US20200049142A1/en not_active Abandoned
- 2019-06-25 EP EP19182173.5A patent/EP3608541A1/en not_active Withdrawn
- 2019-07-24 CN CN201910669137.9A patent/CN110821783A/en active Pending
- 2019-08-09 BR BR102019016561-8A patent/BR102019016561A2/en active Search and Examination
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR652102A (en) * | 1928-04-03 | 1929-03-05 | Noise damper for air intake | |
US3736074A (en) * | 1972-04-20 | 1973-05-29 | Worthington Cei | Inlet, filter and noise suppressor enclosure for compressing apparatus |
WO2011057481A1 (en) * | 2009-11-16 | 2011-05-19 | 浙江鸿友压缩机制造有限公司 | Low-noise oil-free lubrication air compressor |
CN105484971B (en) * | 2016-01-14 | 2017-09-26 | 南京尚爱机械制造有限公司 | Buffer is filtered in a kind of air-breathing noise reduction |
CN105840467A (en) * | 2016-04-27 | 2016-08-10 | 马鞍山市巨峰压缩机制造有限公司 | Spiral noise eliminating air filter element device |
Also Published As
Publication number | Publication date |
---|---|
CN110821783A (en) | 2020-02-21 |
US20200049142A1 (en) | 2020-02-13 |
BR102019016561A2 (en) | 2020-03-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4976046B2 (en) | A silencer configured and intended for compressors | |
US6382931B1 (en) | Compressor muffler | |
EP3608541A1 (en) | Noise reducing silencer with spiral chambers for a compressor | |
EP3581798A1 (en) | Noise reducing silencer with a spirally shaped tube for a compressor | |
CN104728079B (en) | Compressor and its vent silencer | |
KR100386508B1 (en) | Suction gas guide system for reciprocating compressor | |
CN110985341A (en) | Silencer, compressor and household appliance | |
CN101932835A (en) | System for attenuating pulsation in the gas discharge of a refrigeration compressor | |
CN107503905B (en) | Sound filter for compressor | |
CN211008996U (en) | Silencer, compressor and refrigerator | |
CN1099846A (en) | Suction gas conduit | |
US20040261621A1 (en) | Disposable filtering and muffling assembly | |
US11608820B2 (en) | Belt guard comprising a compressor silencer | |
CN211397814U (en) | Silencer | |
BR102019017930B1 (en) | BELT GUARD FOR A COMPRESSOR, COMPRESSOR INSTALLATION, AND METHOD OF INSTALLING A COMPRESSOR MUFFLER ON AN AIR COMPRESSOR WHICH IS CONNECTED TO AN ENGINE | |
CN210440219U (en) | Compressor assembly and refrigerating system | |
RU2411398C2 (en) | Multi-section noise silencer | |
CN105673170A (en) | Internal sound absorption type resonance silencer | |
CN101865117B (en) | Multifunction silencer of air compressor | |
US7494328B2 (en) | NVH and gas pulsation reduction in AC compressor | |
CN214577601U (en) | Silencer with improved structure | |
CN220065169U (en) | Composite silencer | |
CN211370653U (en) | Vertical air compressor with noise reduction function | |
KR200475442Y1 (en) | Air compressor | |
US20240050884A1 (en) | Sound attenuator for a separator device for gas and separator device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200804 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F04B 39/00 20060101AFI20201012BHEP Ipc: F04C 18/16 20060101ALI20201012BHEP Ipc: F04C 18/02 20060101ALI20201012BHEP Ipc: F04C 29/06 20060101ALI20201012BHEP |
|
INTG | Intention to grant announced |
Effective date: 20201030 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20210310 |