WO2019114625A1 - Silencieux de tuyau d'évent de pompe à vide et réfrigérateur le comprenant - Google Patents

Silencieux de tuyau d'évent de pompe à vide et réfrigérateur le comprenant Download PDF

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Publication number
WO2019114625A1
WO2019114625A1 PCT/CN2018/119773 CN2018119773W WO2019114625A1 WO 2019114625 A1 WO2019114625 A1 WO 2019114625A1 CN 2018119773 W CN2018119773 W CN 2018119773W WO 2019114625 A1 WO2019114625 A1 WO 2019114625A1
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WO
WIPO (PCT)
Prior art keywords
chamber
duct
muffler
vacuum pump
air
Prior art date
Application number
PCT/CN2018/119773
Other languages
English (en)
Chinese (zh)
Inventor
杨春
陈建全
张�浩
夏恩品
Original Assignee
青岛海尔股份有限公司
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 青岛海尔股份有限公司 filed Critical 青岛海尔股份有限公司
Priority to EP18889024.8A priority Critical patent/EP3726055A4/fr
Priority to US16/771,644 priority patent/US20210180581A1/en
Priority to AU2018386133A priority patent/AU2018386133A1/en
Publication of WO2019114625A1 publication Critical patent/WO2019114625A1/fr

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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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • 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
    • 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
    • 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
    • F04B39/0033—Pulsation and noise damping means with encapsulations
    • 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
    • F04B39/0066—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using sidebranch resonators, e.g. Helmholtz 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
    • F04B39/0083—Pulsation and noise damping means using blow off silencers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0681—Details thereof

Definitions

  • the invention belongs to the technical field of noise reduction of refrigeration equipment, and particularly relates to a silencer for reducing the noise of a vacuum pump.
  • the preservation of food in the refrigerator is closely related to temperature, humidity and gas environment. Among them, oxygen is an important factor causing food spoilage and bacterial reproduction. Controlling the nitrogen to oxygen ratio of the refrigerator by aspirating the oxygen in the chamber can significantly extend the freshness of the food.
  • Oxygen can be extracted from a specific space by a vacuum pump and discharged to the outside of the refrigerator.
  • gas will conduct noise in the box to the outside space of the refrigerator during the discharge process, causing noise interference.
  • the present invention provides a muffler comprising a hollow cavity formed by a first bottom surface, a second bottom surface and a side wall, the side wall connecting the first bottom surface and the second bottom surface, and the muffler end
  • the air inlet is disposed, and the air outlet is disposed opposite to the other end, the cavity is divided into a plurality of chambers in the axial direction, the chamber includes a first chamber adjacent to the first bottom surface, and a second chamber adjacent to the second bottom surface And an intermediate chamber between the first chamber and the second chamber, the air inlet is electrically connected to the intermediate chamber, and the intermediate chamber is electrically connected to the second chamber, the first chamber and the second chamber
  • the gas is turned on, and the gas outlet is electrically connected to the first chamber gas.
  • At least part of the chamber volume is different.
  • the muffler further includes a first conduit, a second conduit, a third conduit, and a fourth conduit, the first conduit conducting the inlet and the intermediate chamber, and the second conduit conducting the intermediate chamber The chamber and the second chamber, the third conduit conducts the first chamber and the second chamber, and the fourth conduit conducts the first chamber and the air outlet.
  • the first duct, the second duct, the third duct, and the fourth duct are configured to be sequentially arranged in the air path direction.
  • the intermediate chamber is at least one.
  • an embodiment of the present invention provides a muffler including a housing, the housing enclosing a hollow cavity, the proximal end of the housing is provided with an air inlet, and the distal end of the housing is configured with an air outlet, the cavity
  • the body is divided into a plurality of chambers from the proximal end to the distal end, the chamber including a first chamber located opposite the proximal end, a second chamber located opposite the distal end, and the first chamber and the second chamber
  • the gas inlet and the intermediate chamber are in gas conduction
  • the intermediate chamber and the second chamber are in gas conduction
  • the first chamber and the second chamber are gas-conducting
  • the gas outlet and the first chamber gas are Turn on.
  • At least part of the chamber volume is different.
  • the muffler further includes a first conduit, a second conduit, a third conduit, and a fourth conduit, the first conduit conducting the inlet and the intermediate chamber, and the second conduit conducting the intermediate chamber The chamber and the second chamber, the third conduit conducts the first chamber and the second chamber, and the fourth conduit conducts the first chamber and the air outlet.
  • the first duct, the second duct, the third duct, and the fourth duct are configured to be sequentially arranged in the air path direction.
  • an embodiment of the present invention provides a refrigerator including a sealed casing containing a vacuum pump, including any of the above mufflers, and a vacuum pump connected to the muffler.
  • the refrigerator vacuum pump muffler realizes the attenuation of sound waves through the multi-cavity and the circulation arrangement of the conduits, reduces the sound energy, and prevents the noise of the vacuum pump and the box from being transmitted to the outside of the box.
  • FIG. 1 is a schematic structural view of a sealed casing according to an embodiment of the present invention.
  • FIG. 2 is a schematic view of components inside and outside the sealed case according to an embodiment of the present invention.
  • Figure 3 is a plan view of a sealed casing according to an embodiment of the present invention.
  • FIG. 4 is a schematic exploded view of a sealed casing according to an embodiment of the present invention.
  • Figure 5 is a front elevational view of a sealed casing according to an embodiment of the present invention.
  • Figure 6 is a plan view of a sealing member in accordance with an embodiment of the present invention.
  • Figure 7 is a schematic structural view of a sealing member according to an embodiment of the present invention.
  • Figure 8 is a plan view of a lower sealing body in an embodiment of the present invention.
  • FIG. 9 is a schematic view showing the installation of an upper sealing body and a metal plate according to an embodiment of the present invention.
  • Figure 10 is a schematic view showing the structure of a lower sealing body in an embodiment of the present invention.
  • Figure 11 is a schematic exploded view of Figure 10
  • Figure 12 is a perspective schematic view of a muffler according to an embodiment of the present invention.
  • Figure 13 is a perspective schematic view of a muffler in still another embodiment of the present invention.
  • Figure 14 is a schematic view showing the structure of a vacuum pump and a muffler according to still another embodiment of the present invention.
  • Figure 15 is a schematic structural view of a muffler according to still another embodiment of the present invention.
  • Figure 16 is a perspective view of a muffler in still another embodiment of the present invention.
  • Figure 17 is a schematic longitudinal cross-sectional view showing a muffler in still another embodiment of the present invention.
  • the words expressing position and orientation described in the present invention are all referenced to a vacuum pump, one end near the vacuum pump being the proximal end, and the end remote from the vacuum pump being the distal end.
  • the vacuum pump 100 is housed in the sealed casing 200, and is electrically connected to the outside air through the intake pipe 210 and the outlet pipe 220.
  • the proximal end of the intake pipe 210 is connected to the intake pipe of the vacuum pump 100, and the distal end is connected with the fresh-keeping space (not shown) in the refrigerator compartment;
  • the proximal end of the air outlet pipe 220 is connected to the outlet pipe of the vacuum pump 100, and the distal end is sealed to the sealed box.
  • the body 200 extends outside.
  • the sealed casing 200 blocks the gas communication between the vacuum pump 100 and the installation environment to achieve the sound insulation effect.
  • the fresh-keeping space can be a separate compartment or a closed or semi-enclosed space located locally in the compartment.
  • the sealed casing 200 includes an upper sealing body 230 and a lower sealing body 240.
  • the upper sealing body 230 includes an integrally formed top wall and side walls, which together define a receiving cavity for the lower end opening.
  • the lower sealing body 240 includes an integrally formed bottom wall and side walls, which together define an upper opening receiving cavity, upper and lower seals. The openings of the body 240 are matched to each other to form an accommodation space of the vacuum pump 100.
  • the upper sealing body 230 and the lower sealing body 240 are made of plastic material.
  • a seal is disposed between the upper sealing body 230 and the lower sealing body 240.
  • the lower edge of the sidewall of the upper sealing body 230 forms a first groove
  • the upper edge of the sidewall of the lower sealing body 240 forms a second groove
  • the first groove cooperates with the second groove to form a mounting groove of the sealing ring 250,
  • the sealing ring 250 has an annular shape and has a circular cross section, and is made of an elastic material.
  • the mounting tensile amount when the sleeve is sleeved in the mounting groove is 2-5%.
  • the sealing ring 250 applies pressure to form a compression amount of 20-30%, thus ensuring a sealing effect.
  • a sealable seal ring 253 is provided in the notch portion 251.
  • the seal ring 253 is made of an elastic material and integrally formed with the seal ring 250.
  • the seal ring 253 is composed of two H-shaped members that are flexibly connected, and the H-shaped members can be engaged with each other to form a mounted state in cooperation with the notch portion 251.
  • the H-shaped member has a first arm 2531 and a second arm 2532 that are parallel to each other, and a connecting portion 2533 that connects the first arm 2531 and the second arm 2532.
  • the first arm 2531 and the second arm 2532 can cooperate to sandwich the side wall of the casing at the edge of the notch portion 251 to prevent the seal ring 253 from coming off the notch portion 251.
  • the connecting portion 2533 connects the first arm 2531 and the second arm 2532 through the notch portion.
  • the connecting portion 2533 has a concave curved surface. When the H-shaped members are engaged with each other, their curved surfaces are collectively enclosed to form a hollow cavity for the wire to pass through.
  • the notch portion 251 In the case where a plurality of wires pass through the notch portion 251, if the wire portion is circular as a whole, since the wire cross section is circular, the gap formed between the wires reduces the sealing property.
  • the curved surface of the connecting portion 2533 may be wavy (not shown) to form a plurality of mutually independent hollow cavities in the mounted state to better seal the wire of the circular cross section.
  • a plurality of metal plates 260 are disposed in the sealed casing 200.
  • the metal plates 260 are disposed between the vacuum pump 100 and the side walls of the sealed casing 200. Due to the high density of the metal plate 260, the sound passage is blocked, and the noise reduction effect can be achieved.
  • the metal plate 260 is an aluminum plate, a steel plate or a galvanized plate.
  • the metal plate 260 is two pieces, which are respectively disposed on opposite walls of the sealed box body 200.
  • the lower sealing body 240 and the upper sealing body 230 are respectively provided with a limiting structure to fix the metal plates 260a, 260b.
  • FIG. 8 shows a first rib 242 of the bottom wall of the lower sealing body 240 disposed parallel to the side wall 241 and spaced apart by a distance d, and a second rib 244 parallel to the side wall 243 and spaced apart by a distance D, wherein the side wall 241 is The side walls 243 are opposed to each other, d is the thickness of the metal plate 260a, and D is the thickness of the metal plate 260b.
  • the spacing between the first rib 242 and the sidewall 241 forms a limiting slot of the metal plate 260a, and the spacing between the second rib 244 and the sidewall 243 forms a limiting slot defining the metal plate 260b, respectively defining the metal plates 260a, 260b in the horizontal direction. Displacement.
  • the lower sealing body 240 is further provided with a plurality of guiding grooves 245 extending in a vertical direction extending in the same direction as the insertion direction of the metal plate 260 when the metal plate 260 is mounted, and the guiding metal plate 260 is mounted to the preset. s position.
  • FIG. 9 shows that the upper sealing body 230 is provided with a plurality of resisting members 231.
  • the resisting member 231 abuts against the top of the metal plate 260.
  • One end of the resisting member 231 in contact with the metal plate 260 is provided with a step portion 2311, and the side wall of the upper sealing body 230 is fitted to form an inverted U-shaped space to accommodate the top of the metal plate 260.
  • the top surface of the step portion 2311 abuts against the top surface of the metal plate 260, and its displacement in the vertical direction can be defined.
  • the side surface of the step portion abuts against the side surface of the metal plate 260, and the displacement in the horizontal direction can be limited.
  • the metal plate 260 is disposed in close contact with the side wall of the sealed casing 200, and the vibration of the vacuum pump 100 may cause the metal plate 260 to resonate, forming new noise and conducting outward through the wall of the sealed casing 200.
  • the above-mentioned limit structure strictly defines the position of the metal plate 260 to avoid resonance and generate noise.
  • one of the upper sealing body 230 or the lower sealing body 240 or the joint portion of the upper sealing body 230 and the lower sealing body 240 is provided with a notch portion 246 for piercing the air pipe assembly.
  • the notch portion 246 is provided to the lower sealing body 240.
  • the notch portion 246 is formed on the side wall of the lower sealing body 240 near the upper edge, and the notch portion 246 is provided with a groove at the periphery to accommodate the sealing unit 270 to ensure the airtightness of the sealed casing 200.
  • the sealing unit 270 is an annular structure of an elastic material.
  • the air tube assembly includes an integrally formed intake pipe 210, an air outlet pipe 220, and a base plate.
  • the intake pipe 210 and the air outlet pipe 220 are bored on the substrate, and the outer edge of the substrate is matched with the shape of the notch portion 246.
  • the outer edge of the substrate is provided with a groove, and the rib of the periphery of the notch portion 246 is matched, and the substrate can be clamped and fixed to the notch portion by the cooperation of the two, and the sealing unit 270 is embedded in the gap between the two.
  • the accommodating chamber in which the vacuum pump 100 is located is compact, which is disadvantageous for the connection and the piercing operation of the gas line.
  • the air tube assembly By arranging the air tube assembly as the insert structure, it can be conveniently embedded in the notch portion 246 after the connection with the vacuum pump 100 is completed, and then the upper and lower sealing bodies 240 are fastened to complete the assembly.
  • vacuum pump 100 is coupled to muffler 300 via an air outlet tube 220.
  • the muffler 300 includes a housing. The housing is enclosed by a first bottom surface 310 at the proximal end, a second bottom surface 320 at the distal end, and a side wall 330 connecting the first bottom surface 310 and the second bottom surface 320 to form a cylindrical hollow body.
  • An air inlet 340 connected to the air outlet tube 220 is disposed at a proximal end of the silencer 300, and an air outlet 350 is disposed at a distal end.
  • the cavity is divided into a plurality of chambers in the axial direction, that is, from the air inlet 340 to the air outlet 350, and at least part of the chambers are different in volume to correspondingly eliminate sounds of different frequency bands.
  • the volume of each chamber gradually decreases in the axial direction.
  • the chambers are three, and the first chamber 361, the intermediate chamber 362 and the second chamber 363 are sequentially from the proximal end to the distal end.
  • the first chamber 361 is adjacent to the first bottom surface 310
  • the second chamber 363 is adjacent to the second bottom surface 320
  • the intermediate chamber 362 is located between the first chamber 361 and the second chamber 363.
  • the first duct 371 is connected to the air inlet 340 and the intermediate chamber 362
  • the second duct 372 is connected to the intermediate chamber 362 and the second chamber 363
  • the third duct 373 is connected to the first chamber 361 and the second chamber 363.
  • the fourth conduit 374 turns on the first chamber 361 and the air outlet 350.
  • the intermediate chamber 362 can be a plurality.
  • the shape of the muffler housing is not limited to a cylindrical shape, and may be set to a rectangular parallelepiped shape or an irregular outer shape.
  • the sound waves transmitted from the vacuum pump 100 sequentially pass through the first duct 371, the second duct 372, the third duct 373, and the fourth duct 374 with the airflow, in the intermediate chamber 362, the second chamber 363, and the first chamber having different volumes.
  • the reflection and refraction are sequentially performed, and the energy is gradually eliminated.
  • the first chamber 361, the intermediate chamber 362, and the second chamber 363 correspond to a low, medium, and high frequency.
  • the first duct 371, the second duct 372, the third duct 373, and the fourth duct 374 are provided with a narrow inner diameter such that part of the energy is converted into heat energy by the passage of the sound wave.
  • the silencer is set such that the sound waves are cut through the longest stroke in the silencer to reduce energy and achieve refraction and reflection in different chambers, with a smaller silencer axial distance for better noise reduction.
  • the muffler 400 includes a housing.
  • the housing is enclosed by a first bottom surface 410 at the proximal end, a second bottom surface 420 at the distal end, and a side wall 430 connecting the first bottom surface 410 and the second bottom surface 420 to form a cylindrical hollow body.
  • a single chamber is formed within the cavity.
  • An air inlet 440 connected to the air outlet tube 220 is disposed at a proximal end of the silencer 400, and an air outlet 450 is disposed at a distal end.
  • the first conduit 471 conducts the air inlet 440 and the chamber, and the distal end of the first conduit 471 is adjacent to the second bottom surface 420.
  • the second conduit 472 conducts the chamber and the air outlet 450, and the proximal end of the second conduit 472 is adjacent to the first bottom surface 420.
  • the sound waves are reflected and refracted in the chamber, and the energy is gradually digested.
  • the length of the first conduit 471 and the second conduit 472 is a quarter wavelength of the intended audio to specifically cancel the sound of the intended audio.
  • the destination audio is 1000 Hz.
  • the first duct 471 and the second duct 472 are provided with a narrow inner diameter such that part of the energy is converted into heat energy by the passage of sound waves.
  • the high frequency noise cannot be heard by the human ear, and the main interference to the user is low frequency noise.
  • the low frequency noise can be eliminated in a targeted manner, and the structure of the muffler is made simpler.
  • the muffler 500 is disposed inside the sealed casing 200, and is connected to the outlet pipe and the outlet pipe 220 of the vacuum pump 100.
  • the muffler 500 includes a housing that encloses a hollow cavity for refraction and reflection of sound waves.
  • the hollow cavity body includes a cylindrical cavity 510 and a rectangular parallelepiped cavity 520, wherein one of the bottom surfaces of the cylindrical cavity 510 is connected to a face 521 of the rectangular parallelepiped cavity 520, and the cylindrical cavity 510 is guided to the inside of the rectangular parallelepiped cavity 520. through.
  • the diameter of the bottom surface of the cylindrical chamber 510 is less than or equal to the side length of the connecting surface 521 of the rectangular parallelepiped chamber 520.
  • the cylindrical chamber 510 of the muffler 500 is provided with an air inlet 540 and an air outlet 550.
  • the air inlet 540 is disposed at an angle with the air outlet 550 to allow the gas to enter the hollow cavity and then reflect and refract to the air outlet. The energy loss occurs to achieve the purpose of silence.
  • the air inlet 540 is disposed on the bottom surface 511 of the cylindrical chamber 510, and the air outlet 550 is disposed on the side of the cylindrical chamber 510.
  • the air inlet 540 is the same as the inner diameter of the air outlet 550 to balance the pressure of the two ports.
  • the acoustic wave is irregularly reflected and refracted by the change of the shape of the hollow cavity, and the energy is digested.
  • the muffler 600 includes a housing that encloses a hollow cavity.
  • the air vent 650 is disposed at a proximal end of the muffler 600, and the air outlet 650 is disposed at a distal end.
  • the air inlet 640 and the air outlet 650 are communicated by a conduit 670 disposed in the housing.
  • the conduit 670 forms a sleeve structure with the housing.
  • the conduit 670 is filled with a medium to absorb the vibrational energy of the acoustic wave and attenuate the sound intensity. Further, the medium is a sound-absorbing cotton.
  • a plurality of through holes 680 are defined in the side wall of the conduit 670 to enable the conduit 670 to be electrically connected to the cavity.
  • the through holes 680 are circumferentially spaced along the sidewall of the conduit 670, that is, the conduit 670 opens through holes in a plurality of directions.
  • the housing is enclosed by a first bottom surface 610 at the proximal end, a second bottom surface 620 at the distal end, and a side wall 630 connecting the first bottom surface 610 and the second bottom surface 620 to form a cylindrical hollow body.
  • the first bottom surface 610 is provided with an air inlet 640
  • the second bottom surface 620 is provided with an air outlet 640.
  • the through hole diameter is less than 1 mm.
  • the cavity formed by the enclosure is divided into a plurality of chambers arranged from the proximal end to the distal end.
  • the sound waves from the vacuum pump 100 enter the duct 670 from the air inlet 640, and are silenced by the medium to reach the air outlet 650.
  • the sound waves of a specific frequency are attenuated, and the sound intensity is weakened.
  • part of the sound wave is diffracted into the cavity through the through hole 680, and is further attenuated by being refracted and reflected in the cavity.
  • the muffler is set up in such a way that the medium is silenced and the cavity is silenced, and the small holes are used to realize the diffraction of the sound wave, and the sound intensity is reduced in multiple ways.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un silencieux (300), comprenant une cavité creuse entourée conjointement par une première face inférieure (310), une seconde face inférieure (320) et une paroi latérale (330), la paroi latérale (330) étant reliée à la première face inférieure (310) et à la seconde face inférieure (320); une extrémité du silencieux (300) est pourvue d'une entrée d'air (340), et l'autre extrémité en regard est pourvue d'une sortie d'air (350); la cavité est divisée en une pluralité de chambres dans une direction axiale, les chambres comprenant une première chambre (361) adjacente à la première face inférieure (310), une deuxième chambre (363) adjacente à la deuxième face inférieure (320), et une chambre intermédiaire (362) située entre la première chambre (361) et la deuxième chambre (363); l'entrée d'air (340) est en communication d'air avec la chambre intermédiaire (362); la chambre intermédiaire (362) est en communication d'air avec la seconde chambre (363); la première chambre (361) est en communication d'air avec la seconde chambre (363); et la sortie d'air (350) est en communication d'air avec la première chambre (361). Le silencieux (300) comprend en outre un premier tuyau de guidage (371), un deuxième tuyau de guidage (372), un troisième tuyau de guidage (373) et un quatrième tuyau de guidage (374), l'entrée d'air (340) est en communication avec la chambre intermédiaire (362) par l'intermédiaire du premier tuyau de guidage (371), la chambre intermédiaire (362) est en communication avec la seconde chambre (363) par l'intermédiaire du deuxième tuyau de guidage (372), la première chambre (361) est en communication avec la deuxième chambre (363) par l'intermédiaire du troisième tuyau de guidage (373), et la première chambre (361) est en communication avec la sortie d'air (350) par l'intermédiaire du quatrième tuyau de guidage (374); et le premier tuyau de guidage (371), le second tuyau de guidage (372), le troisième tuyau de guidage (373) et le quatrième tuyau de guidage (374) sont conçus pour être disposés successivement dans la direction d'un trajet d'air.
PCT/CN2018/119773 2017-12-11 2018-12-07 Silencieux de tuyau d'évent de pompe à vide et réfrigérateur le comprenant WO2019114625A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18889024.8A EP3726055A4 (fr) 2017-12-11 2018-12-07 Silencieux de tuyau d'évent de pompe à vide et réfrigérateur le comprenant
US16/771,644 US20210180581A1 (en) 2017-12-11 2018-12-07 Vacuum pump exhaust pipe muffler and refrigerator having same
AU2018386133A AU2018386133A1 (en) 2017-12-11 2018-12-07 Vacuum pump exhaust pipe muffler and refrigerator having same

Applications Claiming Priority (2)

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CN201711311262.XA CN107989774A (zh) 2017-12-11 2017-12-11 真空泵排气管消音器及冰箱
CN201711311262.X 2017-12-11

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WO2019114625A1 true WO2019114625A1 (fr) 2019-06-20

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US (1) US20210180581A1 (fr)
EP (1) EP3726055A4 (fr)
CN (1) CN107989774A (fr)
AU (1) AU2018386133A1 (fr)
WO (1) WO2019114625A1 (fr)

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WO2021130029A1 (fr) * 2019-12-23 2021-07-01 Edwards, S.R.O. Couplage d'échappement
CN113417829A (zh) * 2021-07-09 2021-09-21 同济大学 一种燃料电池车用多腔体消声器设计方法

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CN107989774A (zh) * 2017-12-11 2018-05-04 青岛海尔股份有限公司 真空泵排气管消音器及冰箱
CN108150388B (zh) * 2017-12-11 2020-04-21 青岛海尔股份有限公司 空腔消音器及冰箱
CN108253701B (zh) * 2017-12-11 2020-05-26 青岛海尔股份有限公司 具有板状隔音构件的真空组件及冰箱
CN110220295A (zh) * 2019-07-19 2019-09-10 珠海格力电器股份有限公司 消音器及空调
CN112761931B (zh) * 2019-10-21 2023-07-04 安徽美芝制冷设备有限公司 连接结构、排气消音器、消音器以及压缩机
CN111197899B (zh) * 2020-03-09 2022-01-07 海信（山东）冰箱有限公司 一种冰箱
EP4033097B1 (fr) * 2020-11-30 2024-04-24 Anhui Meizhi Compressor Co., Ltd. Silencieux d'aspiration
CN114992094B (zh) * 2022-06-16 2024-04-19 江西省陛快管道科技有限公司 一种用于空压机的排气管结构

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Publication number Priority date Publication date Assignee Title
WO2021130029A1 (fr) * 2019-12-23 2021-07-01 Edwards, S.R.O. Couplage d'échappement
CN113417829A (zh) * 2021-07-09 2021-09-21 同济大学 一种燃料电池车用多腔体消声器设计方法

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CN107989774A (zh) 2018-05-04
AU2018386133A1 (en) 2020-06-25
EP3726055A1 (fr) 2020-10-21
EP3726055A4 (fr) 2020-11-11
US20210180581A1 (en) 2021-06-17

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