EP3608541A1 - Geräuschmindernder schalldämpfer mit spiralkammer für einen kompressor - Google Patents

Geräuschmindernder schalldämpfer mit spiralkammer für einen kompressor Download PDF

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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Withdrawn
Application number
EP19182173.5A
Other languages
English (en)
French (fr)
Inventor
Tingrong Ren
Steve CENTERS
Gerald KALAPOS
Byron WALKER
Erik BACCIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quincy Compressor LLC
Original Assignee
Quincy Compressor LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quincy Compressor LLC filed Critical Quincy Compressor LLC
Publication of EP3608541A1 publication Critical patent/EP3608541A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • 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.
  • inlet air e.g., through an inlet air filter
  • outlet side for discharging the compressed air to a tank and/or distribution header for distributing the compressed air to a network of users.
  • 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.
  • 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.
  • the silencer comprises a housing, a silencer core, where the silencer core comprises two spiral chambers that are stacked on each other.
  • the two spiral chambers comprise hollow walls forming the spiral chambers, where the hollow walls comprise sound absorbing material.
  • 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.
  • 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 a noise reducing silencer 200 according to the present invention.
  • the compressor element 10 is illustrated as a reciprocating compressor having a piston cylinder.
  • Other embodiments may comprise multiple piston cylinders, for compressing air received from an air inlet 12 of the compressor element 10.
  • the noise reducing silencer 200 is provided at the air inlet 12 for filtering the inlet air.
  • the compressor element 10 is driven by a motor 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 the compressor element 10.
  • the compressed air is then discharged from the compressor element 10 to be stored in a tank or distributed to users.
  • the noise reducing silencer 200 is provided at the air inlet 12 to reduce and/or eliminate the noise generated when the air is suctioned or drawn into the air inlet 12 of the compressor element 10.
  • the noise 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.
  • the noise reducing silencer 200 includes a housing 210 that includes a base 212 and cover 214, where the cover 214 includes at least one opening 216 to allow air to be drawn into the noise reducing silencer 200.
  • a silencer core 220 is provided within the housing 210 for guiding the air from an inlet of the housing (through opening 216) to an exit of the housing through outlet 2121 of the base 212.
  • the outlet 2121 of the base 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.
  • the noise reducing silencer 200 includes a silencer core 220 that comprises first spiral chamber 222, and second spiral chamber 224, which are rigidly connected to and separated by support 226.
  • spiral chambers 222 and 224 are stacked on each other to reduce noise.
  • First end seal 249 abuts first spiral chamber 222, and guides air flow from opening 216 through the aperture in the center of first end seal 249 and into the center of first spiral chamber 222.
  • Second end seal 250 abuts second spiral chamber 224, and guides airflow from the center of second spiral chamber 224 through the aperture in the center of second end seal 250 and into outlet 2121 in base 212.
  • Base 212 and cover 214 may be provided with indentations to hold silencer core 220 and filtering element 240 in fixed positions.
  • Each of the spiral chambers 222, 224 is provided with an inlet and an outlet, where the outlet of the second spiral chamber 224 can be connected to a connecting element or channel provided along an inner side of the windings of the second spiral chamber 224 for connecting to the outlet 2121 of the base 212. While two spiral chambers 222, 224 are illustrated in this embodiment, a single spiral chamber or more than two spiral chambers can be used, where the number of spiral chambers are determined based on a number of factors, including the size of the noise reducing silencer. In some embodiments, one to six spiral chambers can be used.
  • 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.
  • a filtering element 240 can be placed around the silencer core 220.
  • Filtering element 240 includes a filter screen 244 to provide a supporting surface for the filter 242.
  • the filter 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.
  • the base 212 of the noise 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.
  • the noise reducing silencer 200 is constructed in a way so that the at least two spiral chambers are provided centrally in the housing 210.
  • the filter screen 244 is then provided along an outer side and surrounding second spiral chamber 224 of the spirally shaped silencer core 220, and the filter 242 is provided along an outer surface of the filter screen 244.
  • the housing 210, base 212, and cover 214 enclose the elements of the noise reducing silencer 200.
  • the operation of the noise reducing silencer 200 is provided as follows: Air is drawn through the opening 216 in the cover 214 into the noise reducing silencer 200 centrally through the first end seal 249 and through the first spiral chamber inlet 227 (shown in Fig. 3 ) of the first spiral chamber 222 provided along the center of the first spiral chamber 222. After passing through the first spiral chamber 222, the air exits the outer winding.
  • a space may be provided between the exterior surface of filter element 240 and the interior surface of housing 210, whereby air flows out of first spiral chamber 222, through the space, through filter element 240, through second spiral chamber inlet 228 (shown in Fig. 3 ), and into second spiral chamber 224.
  • Filter element 240 preferably abuts support plate 226.
  • the noise reducing silencer 200 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.
  • the spiral chambers 222, 224 create an extended and indirect path for the sound to travel by forcing the air to travel through.
  • the windings of the spiral chambers preferably include two windings. However, more or less windings are within the scope of the invention. That is, it is understood that the spiral shape of the spiral chambers prevents a straight path for the sound to travel and the sound is instead reflected from all surfaces causing noise cancelation and attenuation.
  • the spiral windings provide a sealed surface for a broad spectrum of sound frequencies that are diffused or absorbed by the spiral chambers 220.
  • the number of windings that are appropriate depends on the application and volume of air to be passed through the spirally shaped silencer 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 first spiral chamber 222 is provided with first spiral inlet 227, and second spiral chamber 224 is provided with second spiral inlet 228.
  • the dimensions of the spiral chambers 222, 224 may be kept to a minimum and with the use of two spiral chambers, the silencer core 220 may be configured to reduce noise and provide an increased amount of air flow into the noise 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 spirally wound 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 a silencer core 420 that comprises spiral chambers 422, 424 that are stacked on top of each other.
  • the spiral chambers comprise hollow walls so that the spiral chambers are constructed as double walled spiral chambers where the opening created in the hollow wall, e.g., between the double walls, is filled with a sound absorbing material to further reduce and/or eliminate the generated noise.
  • the dimensions of the spiral chambers are also preferably kept to a minimum to aid in noise reduction and by using two chambers the restriction to the air flow is reduced by providing a larger inlet opening into the silencer core. Additionally, the divided chambers are better supported to withstand the forces of the air flow being drawn into the compressor, e.g., using support 426.
  • the noise reducing silencer 400 includes a housing 410 that includes a base 412 and cover 414, where the cover 414 includes an opening 416.
  • the silencer core 420 is made up of first spiral chamber 422 and second spiral chamber 424 that are rigidly connected to and separated by support 426.
  • Noise reducing silencer 400 is provided within the housing 410 for guiding the air from an inlet of the housing (through opening 416) to an exit of the housing through outlet 4121 of the base 412.
  • First end seal 449 abuts first spiral chamber 422, and guides air flow from opening 416 in cover 414 through the aperture in the center of first end seal 449 and into the center of first spiral chamber 422.
  • Second end seal 450 abuts second spiral chamber 424, and guides air flow from the center of second spiral chamber 424 through the aperture in the center of second end seal 450 and into outlet 4121 in base 412.
  • a filtering element 440 is placed around second spiral chamber 424 of the silencer core 420 and includes a filter screen 444 to provide a supporting surface for the filter 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 of filter element 440 and the interior surface of housing 410, whereby air flows out of first spiral chamber 422, through the space, through filter element 440, through second spiral chamber inlet 428 (shown in Fig. 5A ), and into second spiral chamber 424.
  • Filter element 440 preferably abuts support plate 426.
  • Base 412 and cover 414 may be provided with indentations to hold silencer core 420 and filtering element 440 in fixed positions.
  • the base 412 of the noise 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.
  • the housing 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 first spiral chamber 422 is provided with first spiral inlet 427, and second spiral chamber 424 is provided with second spiral inlet 428.
  • the dimensions of the spiral chambers 422, 424 may be kept to a minimum and with the use of at least two spiral chambers, the silencer core 420 is configured to reduce noise and provide an increased amount of air flow into the noise reducing silencer 400.
  • the spiral chambers 422, 424 create an extended and indirect path for the sound to travel by forcing the air to travel through the windings of the spiral chambers.
  • the windings preferably include two windings, and more preferably three windings as shown in Fig. 5A .
  • the first spiral chamber 422 has a chamber inlet opening 427 and the second spiral chamber 424 has a chamber inlet opening 428 for receiving the air into the spiral chambers.
  • the silencer core 420 has a central hollow 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.
  • 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.
  • Second end seal 650 abuts second spiral chamber 624, and guides airflow from the second spiral chamber 624 to a filtering element 640 provided on an outflow or downstream side of the second spiral chamber 624 of the silencer core 620.
  • the filtering element 640 can include a filter support or screen 644 to provide a supporting surface for the filter 642.
  • a spacer 630 may be provided between the second end seal 650 and the filtering element 640.
  • Filtering element 640 preferably guides the air flow from the center of second spiral chamber 624 through the aperture in the center of second end seal 650 and into outlet 6121 in base 612 (and optionally through the spacer 630).
  • the base 612 of the noise 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 includes base 612 and cover 614 forms an enclosure for the noise reducing silencer, where the base 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 first spiral chamber 622 is provided with first spiral inlet 627, and second spiral chamber 624 is provided with second spiral inlet 628, as seen in Fig. 7B .
  • the outlet of the first spiral chamber 622 is connected to the second spiral inlet 628.
  • the dimensions of the spiral chambers 622, 624 may be kept to a minimum and with the use of at least two spiral chambers, the silencer core 620 is configured to reduce noise and provide an increased amount of air flow into the noise reducing silencer 600.
  • the spiral chambers 622, 624 create an extended and indirect path for the sound to travel by forcing the air to travel through the windings of the spiral chambers.
  • the windings preferably include two windings, as shown in 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 to Figs. 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.
  • the first spiral chamber 822 is provided with first spiral inlet 827
  • second spiral chamber 824 is provided with second spiral inlet 828, as seen in Fig. 8A .
  • the outlet of the first spiral chamber 822 is connected to the second spiral inlet 828.
  • the dimensions of the spiral chambers 822, 824 may be kept to a minimum and with the use of at least two spiral chambers, the 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.
  • the spiral chambers 822, 824 create an extended and indirect path for the sound to travel by forcing the air to travel through the windings of the spiral chambers.
  • the windings preferably include two windings, as shown in Fig. 8C . However, more or less windings are within the scope of the invention.
  • Fig. 9A illustrates a perspective cross-section view of a noise reducing silencer 900 according to a fourth embodiment of the invention, which is provided with base 912 and cover 914.
  • air flows from opening 916 into first spiral chamber 922, and from first spiral chamber air outlet 931 into the second spiral chamber inlet 928, and from second spiral chamber 924, second end seal 950, and through filter 942, and then through outlet 9121 in base 912.
  • Fig. 9B illustrates a cross-section view of the noise reducing silencer according to the fourth embodiment of the invention, which is provided with base 912 and cover 914.
  • air flows through first spiral chamber 922, and through second spiral chamber 924, and through filter 942 and filter screen 944.
  • 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Compressor (AREA)
EP19182173.5A 2018-08-10 2019-06-25 Geräuschmindernder schalldämpfer mit spiralkammer für einen kompressor Withdrawn EP3608541A1 (de)

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 (de) 2020-02-12

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EP19182173.5A Withdrawn EP3608541A1 (de) 2018-08-10 2019-06-25 Geräuschmindernder schalldämpfer mit spiralkammer für einen kompressor

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US (1) US20200049142A1 (de)
EP (1) EP3608541A1 (de)
CN (1) CN110821783A (de)

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CN113581296B (zh) * 2021-07-22 2023-07-07 湖北吉兴汽车部件有限公司 一种汽车干法顶蓬材料复合新结构
BE1030618B1 (nl) * 2022-06-13 2024-01-23 Atlas Copco Airpower Nv Inlaatgeluidsdemper voor een volumetrische compressor en volumetrische compressor daarmee uitgerust

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