EP3271582B1 - Filtre acoustique d'aspiration pour compresseur - Google Patents

Filtre acoustique d'aspiration pour compresseur Download PDF

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Publication number
EP3271582B1
EP3271582B1 EP16715436.8A EP16715436A EP3271582B1 EP 3271582 B1 EP3271582 B1 EP 3271582B1 EP 16715436 A EP16715436 A EP 16715436A EP 3271582 B1 EP3271582 B1 EP 3271582B1
Authority
EP
European Patent Office
Prior art keywords
suction
valve
acoustic filter
way
fact
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.)
Active
Application number
EP16715436.8A
Other languages
German (de)
English (en)
Other versions
EP3271582A2 (fr
Inventor
Paulo Rogerio Carrara Couto
Flavio Jorge haddad KALLUF
Dietmar Erich Bernhard Lilie
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.)
Nidec Global Appliance Compressores e Solucoes em Refrigeracao Ltda
Original Assignee
Embraco Industria de Compressores e Solucoes em Refrigeracao Ltda
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Publication date
Application filed by Embraco Industria de Compressores e Solucoes em Refrigeracao Ltda filed Critical Embraco Industria de Compressores e Solucoes em Refrigeracao Ltda
Priority claimed from PCT/BR2016/050059 external-priority patent/WO2016145503A2/fr
Publication of EP3271582A2 publication Critical patent/EP3271582A2/fr
Application granted granted Critical
Publication of EP3271582B1 publication Critical patent/EP3271582B1/fr
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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
    • 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
    • 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

Definitions

  • the present invention relates to a suction acoustic filter for a reciprocating compressor, and more particularly, to an acoustic filter suction to reciprocating compressor used in refrigeration systems and particularly refrigeration systems provided with the least two independent lines of evaporation/suction.
  • suction acoustic filter for reciprocating compressor is provided with a simplified skilled means to select one of the two (or multiple) independent lines of lines evaporation/suction of the refrigeration system.
  • Patent PCT/BR2011/000120 where are described at least two refrigeration systems settings of at least two independent lines of evaporation/suction.
  • One of these embodiments foresees the use of a reciprocating compressor whose compression mechanism (in particular, the entire valve assembly) is specially modified to have two separate lines evaporator/suction, and comprise expedients to select/enable of temporary mode, only one of the two lines of evaporation/suction.
  • a reciprocating compressor comprising a compression mechanism
  • a compression mechanism is essentially conventional and comprises the addition of a fluid selector device (three-way valve/two positions) able to select, on a temporary basis, one out of the two lines of evaporation/suction, this allowing the fluid communication with the compression mechanism.
  • Patent Document BR1020140072543 describes and illustrates at least one embodiment said fluid selector device originally designed on Patent PCT/BR2011/000120 . Furthermore, is expected also the possibility of installing said fluid selector device inside the suction acoustic filter reciprocating compressor.
  • Patent document US5531078 which are provided two rows of evaporation/suction derived arranged evaporators in series and arranged to configure a fractional evaporation system, where part of the refrigerant (portion which has exchanged heat in the first evaporator review) can be returned to the compressor without the need to move the second evaporator.
  • selecting one among the two rows of evaporation/suction is directly performed by means of a valve "ON/OFF", which in pressure differential function, cooperates with a check valve.
  • Said suction acoustic filter for reciprocating compressor comprises at least two input ways, at least one outlet via at least one main chamber arranged between the two input channels and output channels.
  • Said main chamber comprises a volume of common sound attenuation to at least two input ways and at least one exit way.
  • At least one automatic valve is arranged cooperating in relation to one of the acoustic filter entries process of suction and at least one valve from at least one way is arranged cooperating relative to each other of acoustic suction filter entries routes
  • said automatic valve and said one-way valve acting to selectively alternate, and opening the one-way valve culminates in closing the automatic valve and the closing of the one-way valve culminates in the automatic valve opening.
  • the said one-way valve may comprise a two-position two-way valve preferably controlled by a solenoid.
  • Said automatic valve may comprise a pressure differential valve, or a normally-open type valve vane.
  • said acoustic filter may further comprise at least one stop end-of-course disposed within the main chamber so as to cooperate with at least one of the two valves
  • the automatic valve is housed in a lower portion of the suction filter
  • said acoustical filter further comprises at least one mounting structure disposed within the main chamber, it is apt to allow mounting at least one of the two valves.
  • the acoustic filter suction to reciprocating compressor comprises, broadly, a body (preferably bipartite) whose inner volume is designed to minimize the pulsations suction usually observed in reciprocating compressors used in refrigeration systems.
  • suction filters are preferably compounds in polymer alloy, and so does the suction filter described herein.
  • the suction acoustic filter described herein comprises a first inlet way 11, a second input track 12 and output track 2.
  • input and output refer only to the fluid dynamics observed in an acoustic filter suction, which in this case provides for the evaporation gas inlet/suction through the channels 11 and 12, and the outlet of the evaporation gas/suction to the engine compression of the reciprocating compressor, via 2.
  • main chamber 1 disposed between the input channels and the output via the acoustic filter. It is exactly in said main chamber 1 which is the attenuation of the suction pulses, and this effect already notoriously described in related technical literature.
  • valve 3 previously known valves which open and close automatically when pressure conditions allow, for example, ball valves, check valves, vane valves, among others
  • valve 4 valve "ON/OFF"
  • the first inlet means 11 comprises an automatic valve 3 for retention of the spherical type
  • the second inlet means 12 comprises a valve a 4 via the electric type, actionable via solenoid command.
  • the automatic valve 3 for retention of the spherical type could be replaced by an automatic check valve vane type.
  • the first input means 11 comprises an automatic valve 3 preferably open holding type reed in its quiescent state (no forces acting) and second inlet means 12 comprises a one-way valve 4 of the metallic type, actionable through solenoid control 41.
  • the valves are mounted distally of their respective input channels. Therefore, the acoustic filter suction to reciprocating compressor comprises, inside your camera 1, a mounting frame 14 dedicated to the assembly of valves 3 and/or 4.
  • the valves 3 and 4 of this third constructive possibility are similar to valves second constructive option, i.e. the automatic valve 3 is withholding kind vane and preferably open in its resting state (not acting forces) and the one-way valve 4 is of the metallic type, actionable through solenoid control 41.
  • the automatic valve 3 and/or one-way valve 4 can be of the "normally-open” and/or the type "normal-closed ", and, regardless of this constructive detail, it is essential that such valves allow a unique fluid flow.
  • the fluid inlet for the second input path 12 must be able to close the automatic valve 3 for retention and, on the other hand, the controlled closure one-way valve 4 through the solenoid actuator 41 must be able to allow the maintenance of opening the automatic valve 3 for retention and, accordingly, the fluid inlet through the first inlet 11.
  • the third constructive option of the acoustic filter suction to reciprocating compressor differs from the second constructive option of acoustic suction filter reciprocating compressor, as shown in Figure 2 , by the fact that the mounting frame 14, and allows the valves to be physically disconnected from entryways, has yet to be defined two new independent chambers beyond that common to two lines of pressure and, in addition, makes it possible to use a single stop end-to 5-course for both valves.
  • This configuration aims to reduce the residual volume of fluid in common chamber, allowing the system to operate at higher switching frequencies.
  • the "outputs" of both valves 3 and 4 are directed to the camera 1, which comprises, by definition, a common volume, and intermediate between the two valves 3 and 4 and the outflow two of said acoustic filter suction.
  • the functional logic of the suction acoustic filter for reciprocating compressor disclosed herein is simple: the differential pressure existing inside the chamber 1 determines which of the valves is in an active operational state. Therefore, it is necessary that the inlet means of the pressure 12 is always larger than the input via the pressure 11, so that simple operation (change of operational status) of a track 4 the valve is sufficient to switch between fluid communication via inlet 11 and outlet of two or fluid communication via the inlet 12 and the outlet pathway 2.
  • suction acoustic filter reciprocating compressor disclosed herein is similar to the functional principle of selection of the fluid cooling system described in document US5531078 .
  • valve 3 is accommodated preferably in the lower suction filter region so that the oil may eventually be housed inside said suction filter during compressor operation to be easily purged to the compressor housing when the valve 3 is open.
  • a valve "normally-open" to the input means 11 is preferred to allow the suction oil filter purging during the period that the compressor is switched off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Claims (9)

  1. Filtre acoustique d'aspiration pour un compresseur alternatif, comprenant deux voies d'entrée (11, 12), au moins une voie de sortie (2) et au moins une chambre principale (1) disposée entre les deux voies d'entrée (11, 12) et la voie de sortie (2) ;
    la au moins une chambre principale (1) comprend un volume d'atténuation acoustique commun aux deux voies d'entrée (11, 12) et à la au moins une voie de sortie (2) ;
    caractérisé en ce qu'il comprend :
    au moins une valve automatique (3) coopérant disposée en relation avec l'une des deux voies d'entrée (11) du filtre acoustique d'aspiration ;
    au moins une valve unidirectionnelle (4) coopérant disposée en relation avec l'autre des deux voies d'entrée (12) du filtre acoustique d'aspiration ; et
    ladite au moins une valve automatique (3) et ladite au moins une valve unidirectionnelle (4) fonctionnant pour alterner sélectivement de façon réciproque, de façon que l'ouverture de la au moins une valve unidirectionnelle (4) entraîne la fermeture de la au moins une valve automatique (3) et que la fermeture de la au moins une valve unidirectionnelle (4) entraîne l'ouverture de la au moins une valve automatique (3).
  2. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve unidirectionnelle (4) comprend une valve à deux positions pour deux voies.
  3. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve unidirectionnelle (4) comprend une valve commandée par solénoïde.
  4. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve automatique (3) comprend une valve anti-retour.
  5. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve automatique (3) comprend une valve de pression différentielle.
  6. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve automatique (3) comprend une valve à plaque et est normalement ouverte.
  7. Filtre acoustique d'aspiration, selon la revendication 5, caractérisé par le fait qu'il comprend en outre au moins une butée de fin de trajet (5) disposée à l'intérieur de la chambre principale (1) de manière à coopérer avec au moins l'une des deux valves (3, 4).
  8. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait que ladite au moins une valve automatique (3) se trouve logée sur une partie inférieure du filtre d'aspiration.
  9. Filtre acoustique d'aspiration, selon la revendication 1, caractérisé par le fait qu'il comprend en outre au moins une structure de montage (14) qui, disposée à l'intérieur de la chambre principale (1), est apte à permettre l'assemblage d'au moins l'une parmi les deux valves (3, 4).
EP16715436.8A 2015-03-19 2016-03-18 Filtre acoustique d'aspiration pour compresseur Active EP3271582B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BR102015062087 2015-03-19
BR102016030510 2016-02-12
PCT/BR2016/050059 WO2016145503A2 (fr) 2015-03-19 2016-03-18 Filtre acoustique d'aspiration pour compresseur

Publications (2)

Publication Number Publication Date
EP3271582A2 EP3271582A2 (fr) 2018-01-24
EP3271582B1 true EP3271582B1 (fr) 2020-04-22

Family

ID=60675469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16715436.8A Active EP3271582B1 (fr) 2015-03-19 2016-03-18 Filtre acoustique d'aspiration pour compresseur

Country Status (2)

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EP (1) EP3271582B1 (fr)
ES (1) ES2807271T3 (fr)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
EP3271582A2 (fr) 2018-01-24
ES2807271T3 (es) 2021-02-22

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