CN107989774A - Vacuum pump discharges pipe muffler and refrigerator - Google Patents

Vacuum pump discharges pipe muffler and refrigerator Download PDF

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Publication number
CN107989774A
CN107989774A CN201711311262.XA CN201711311262A CN107989774A CN 107989774 A CN107989774 A CN 107989774A CN 201711311262 A CN201711311262 A CN 201711311262A CN 107989774 A CN107989774 A CN 107989774A
Authority
CN
China
Prior art keywords
chamber
conduit
muffler
intermediate cavity
cavity
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.)
Pending
Application number
CN201711311262.XA
Other languages
Chinese (zh)
Inventor
杨春
陈建全
张�浩
夏恩品
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.)
Qingdao Haier Co Ltd
Original Assignee
Qingdao Haier Co Ltd
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 Qingdao Haier Co Ltd filed Critical Qingdao Haier Co Ltd
Priority to CN201711311262.XA priority Critical patent/CN107989774A/en
Publication of CN107989774A publication Critical patent/CN107989774A/en
Priority to EP18889024.8A priority patent/EP3726055A4/en
Priority to US16/771,644 priority patent/US20210180581A1/en
Priority to PCT/CN2018/119773 priority patent/WO2019114625A1/en
Priority to AU2018386133A priority patent/AU2018386133A1/en
Pending legal-status Critical Current

Links

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
    • 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

Abstract

Present invention is disclosed a kind of muffler, including by the first bottom surface, the hollow cavity that second bottom surface and side wall are enclosed jointly, side wall connects the first bottom surface and the second bottom surface, muffler one end configures air inlet, opposite other end configures gas outlet, cavity is separated into some chambers vertically, chamber includes the first chamber adjacent with the first bottom surface, the second chamber adjacent with the second bottom surface and the intermediate cavity between first chamber and second chamber, air inlet and intermediate cavity gas communication, intermediate cavity and second chamber gas communication, first chamber and second chamber gas communication, gas outlet and first chamber gas communication.

Description

Vacuum pump discharges pipe muffler and refrigerator
Technical field
The invention belongs to refrigeration plant noise reduction technology field, and in particular to a kind of muffler for reducing vacuum pump noise.
Background technology
The fresh-keeping and temperature of food, humidity and gaseous environment are closely related in refrigerator.Wherein, oxygen is to cause food spoilage An important factor for rotten, bacterial reproduction.The ratio of nitrogen to oxygen of refrigerator is controlled significantly to prolong by aspirating indoor oxygen The fresh keeping time of long food.
Oxygen can be extracted out by vacuum pump out of particular space, and is discharged into outside refrigerator.But gas is as one The medium of kind conduction sound, the noise transmission in babinet to refrigerator exterior space during discharge can be formed noise and done Disturb.
The content of the invention
It is an object of the invention to provide a kind of muffler, to solve the problems, such as that vacuum pump noise exports.
For achieving the above object, the present invention provides a kind of muffler, including by the first bottom surface, the second bottom surface and side wall The hollow cavity being enclosed jointly, side wall connect the first bottom surface and the second bottom surface, and muffler one end configures air inlet, relatively The other end configures gas outlet, and cavity is separated into some chambers vertically, chamber include the first chamber adjacent with the first bottom surface, The second chamber adjacent with the second bottom surface and the intermediate cavity between first chamber and second chamber, air inlet and intermediate cavity Room gas communication, intermediate cavity and second chamber gas communication, first chamber and second chamber gas communication, gas outlet and first Gas to chamber turns on.
Further as an embodiment of the present invention is improved, and the volume of at least part chamber differs.
Further as an embodiment of the present invention is improved, and muffler further includes the first conduit, the second conduit, the 3rd leads Pipe and the 4th conduit, the first conduit conducting air inlet and intermediate cavity, the second conduit conducting intermediate cavity and second chamber, the 3rd Conduit turns on first chamber and second chamber, the 4th conduit conducting first chamber and gas outlet.
Further as an embodiment of the present invention is improved, the first conduit, the second conduit, the 3rd conduit and the 4th conduit It is configured as arranging successively along gas circuit direction.
Further as an embodiment of the present invention is improved, and intermediate cavity is at least one.
To achieve the above object, an embodiment of the present invention provides a kind of muffler, including housing, during housing is enclosed Empty cavity, the near-end configuration air inlet of housing, the distal end configuration gas outlet of housing, if cavity is separated into from proximate Dry chamber, chamber include relative position close to the first chamber of near-end, relative position close to the second chamber of distal end and positioned at the Intermediate cavity between one chamber and second chamber, air inlet and intermediate cavity gas communication, intermediate cavity and second chamber gas Body turns on, first chamber and second chamber gas communication, gas outlet and first chamber gas communication.
Further as an embodiment of the present invention is improved, and the volume of at least part chamber differs.
Further as an embodiment of the present invention is improved, and muffler further includes the first conduit, the second conduit, the 3rd leads Pipe and the 4th conduit, the first conduit conducting air inlet and intermediate cavity, the second conduit conducting intermediate cavity and second chamber, the 3rd Conduit turns on first chamber and second chamber, the 4th conduit conducting first chamber and gas outlet.
Further as an embodiment of the present invention is improved, the first conduit, the second conduit, the 3rd conduit and the 4th conduit It is configured as arranging successively along gas circuit direction.
To achieve the above object, an embodiment of the present invention provides a kind of refrigerator, including accommodates the seal box of vacuum pump Body, including as above any muffler, vacuum pump are connected with muffler.
Compared with prior art, refrigerator vacuum pump muffler provided by the invention, is led by what Multicarity and circulation were arranged Pipe designs the decay for realizing sound wave, reduces acoustic energy, prevents the noise of vacuum pump and babinet from being conducted to outside babinet.
Brief description of the drawings
Fig. 1 is the structure diagram of the sealed box body of an embodiment of the present invention；
Fig. 2 is the block diagram inside and outside the sealed box body of an embodiment of the present invention；
Fig. 3 is the top view of the sealed box body of an embodiment of the present invention；
Fig. 4 is the exploded perspective view of the sealed box body of an embodiment of the present invention；
Fig. 5 is the front view of the sealed box body of an embodiment of the present invention；
Fig. 6 is the top view of seal in an embodiment of the present invention；
Fig. 7 is the structure diagram of seal in an embodiment of the present invention；
Fig. 8 is the top view of lower seal in an embodiment of the present invention；
Fig. 9 is the scheme of installation of upper seal and metallic plate in an embodiment of the present invention；
Figure 10 is the structure diagram of lower seal in an embodiment of the present invention；
Figure 11 is the exploded perspective view of Figure 10；
Figure 12 is the perspective diagram of muffler in an embodiment of the present invention；
Figure 13 is the perspective diagram of muffler in a further embodiment of this invention；
Figure 14 is the structure diagram of a further embodiment of this invention intermediate pump and muffler；
Figure 15 is the structure diagram of muffler in a further embodiment of this invention；
Figure 16 is the perspective view of muffler in a further embodiment of this invention；
Figure 17 is the Longitudinal cross section schematic of muffler in a further embodiment of this invention.
Embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously The present invention is not limited, structure that those of ordinary skill in the art are made according to these embodiments, method or functionally Conversion is all contained in protection scope of the present invention.
The word of described expression position and direction in the present invention, is using vacuum pump as reference, close to the one of vacuum pump Hold as near-end, one end away from vacuum pump is distal end.
Join Fig. 1 to Fig. 3, in an embodiment of the present invention, vacuum pump 100 is contained in sealed box body 200, passes through air inlet Pipe 210 and air outlet pipe 220 are turned on ambient atmos.Wherein, the air inlet pipeline of 210 near-end of air inlet pipe connection vacuum pump 100, distal end With the fresh-keeping space in refrigerator compartment（It is not shown）It is connected；220 near-end of air outlet pipe connects the outlet pipe of vacuum pump 100, far Hold to extending outside sealed box body 200.Sealed box body 200 has blocked the gas connection of vacuum pump 100 and installation environment, reach every The effect of sound.Fresh-keeping space can be an independent compartment, or closing or semi-enclosed space positioned at compartment part.
Sealed box body 200 includes upper seal 230 and lower seal 240.Upper seal 230 includes integrally formed roof And side wall, the common accommodating chamber for limiting a lower ending opening, lower seal 240 include integrally formed bottom wall and side wall, common limit The accommodating chamber of a fixed upper end opening, the opening of upper and lower seal 240 are engaged, mutually can be interlocked to form the appearance of vacuum pump 100 Receive space.
Preferably, upper seal 230 and lower seal 240 are plastic material.
Join Fig. 4, seal is set between upper seal 230 and lower seal 240.The side wall lower edge shape of upper seal 230 Into the first groove, the side wall upper limb of lower seal 240 forms the second groove, the first groove and the second fit depressions, is formed close The mounting groove of seal 250, so may insure seal 230 and lower seal 240 fasten after air-tightness, prevent sound from The splicing gap outflow of sealed box body 200.Sealing ring 250 is ring-type, has circular cross-section, it uses elastic material, is sheathed on Installation amount of tension when in mounting groove is 2-5%, and when upper seal 230 and the fastening of lower seal 240, sealing ring 250 is applied The decrement of pressure initiation 20-30%, so ensures sealing effect.
Fig. 4 and Fig. 5 shows that seal 230 and the joint of lower seal 240 set notch part 251, for the company of wearing Connect the wire rod of vacuum pump 100.In order to ensure the leakproofness of sealed box body 200, the sealing ring that can be fastened is set in notch part 251 253.The sealing ring 253 uses elastic material, is integrally formed with sealing ring 250.
Join Fig. 6 and Fig. 7, sealing ring 253 is made of two H-type components being flexibly connected, and H-type component can be interlocked each other Form the installment state coordinated with notch part 251.H-type component has the first arm 2531 and the second arm 2532 parallel to each other, with And the connecting portion 2533 of the first arm 2531 of connection and the second arm 2532.First arm 2531 and the second arm 2532 can coordinate jointly by The box side wall clamping at 251 edge of notch part therebetween, prevents sealing ring 253 from coming off from notch part 251.Connecting portion 2533, which passes through, to be lacked Oral area connects the first arm 2531 and the second arm 2532.Connecting portion 2533 has concave curved surfaces.H-type component fastens each other When, its curved surfaces is enclosed hollow cavity jointly, so that wire rod passes through.
In the case of more wire rods pass through notch part 251, if passing through notch part 251 as a whole, since wire rod is cut Face is circle, and the gap formed between wire rod can reduce leakproofness.To this situation, the curved surfaces of connecting portion 2533 can be wave Shape（It is not shown）, to form multiple hollow cavities independent of each other in installment state, preferably seal the wire rod of circular cross-section.
Join Fig. 8, some metallic plates 260 are set in sealed box body 200, metallic plate 260 is arranged at vacuum pump 100 and seal box Between 200 side wall of body.Since 260 density of metallic plate is high, passing through for sound is caused to obstruct, the effect of sound insulation and noise reduction can be played Fruit.
Preferably, metallic plate 260 is aluminium sheet, steel plate or galvanized sheet.
Join Fig. 8 and Fig. 9, in an embodiment of the present invention, metallic plate 260 is two panels, and gluing, sealing box body 200 is opposite respectively Two walls set.Lower seal 240 and upper seal 230 set position limiting structure with fixed metal plate 260a, 260b respectively.
Fig. 8 shows that the bottom wall of lower seal 240 sets the first rib 242 of d parallel with side wall 241 and at a distance, with And the second rib 244 of D parallel with side wall 243 and at a distance, wherein side wall 241 is opposite with side wall 243, and d is metallic plate The thickness of 260a, D are the thickness of metallic plate 260b.First rib 242 and the interval of side wall 241 form the spacing of metallic plate 260a The interval of groove, the second rib 244 and side wall 243 forms the limiting slot for limiting metallic plate 260b, limits metallic plate 260a, 260b respectively Displacement in the horizontal direction.
Join Fig. 8 and Figure 10, lower seal 240 also sets up some guide grooves 245, and guide groove 245 vertically extends, its Direction of insertion when extending direction is installed with metallic plate 260 is consistent, and guiding metallic plate 260 is installed to default position.
Fig. 9 shows that seal 230 sets some supporting pieces 231.When upper seal 230 and lower seal 240 cover, Supporting piece 231 is just connected to the top of metallic plate 260.One end that supporting piece 231 is contacted with metallic plate 260 sets stage portion 2311, The space of inverted u-shaped is formed with the side wall for closing seal 230, to accommodate the top of metallic plate 260.The top surface of stage portion 2311 with The top surface of metallic plate 260 abuts against, and can limit its displacement in vertical direction, the side of stage portion and the side of metallic plate 260 Face abuts against, and can limit its displacement in the horizontal direction.
Metallic plate 260 is bonded setting with 200 side wall of sealed box body, and the vibrations of vacuum pump 100 may cause metallic plate 260 Resonance, the wall for forming new noise and sealed box body 200 outwards conduct.Above-mentioned position limiting structure considered critical metallic plate 260 Position, avoid resonance produce noise.
In an embodiment of the present invention, one of upper seal 230 or lower seal 240 or upper seal 230 are close with The junction surface of envelope body 240 sets notch part 246 jointly, to wear tracheae component.
Figure 10 and Figure 11 illustrates the situation that notch part 246 is arranged at lower seal 240.Notch part 246 is opened in Lower seal 240 is close to the side wall of upper limb, and 246 periphery of notch part sets groove, to accommodate sealing unit 270, it is ensured that seal box The air-tightness of body 200.Sealing unit 270 is the cyclic structure of elastic material.
Tracheae component includes integrally formed air inlet pipe 210, air outlet pipe 220 and substrate.Air inlet pipe 210 and air outlet pipe 220 It is arranged on substrate, the outer rim of substrate is engaged with 246 shape of notch part.Substrate outer edge sets groove, with 246 periphery of notch part Fin be engaged, substrate clamping can be fixed on by notch part by the cooperation of the two, it is single that the gap location of the two is embedded sealing Member 270.
Accommodating chamber spaces compact residing for vacuum pump 100, is unfavorable for the connection of gas piping and wears operation.By by gas Tube assembly is arranged to embedding structure, can be easily embedded at after its connection with vacuum pump 100 is completed in notch part 246 solid It is fixed, then fasten upper and lower seal 240 and complete assembling.
The gas of air outlet pipe 220 is through noise reduction heel row to outside refrigerator.Join Fig. 1 and Figure 12, in an embodiment of the present invention, very Sky pump 100 is connected by air outlet pipe 220 with muffler 300.Muffler 300 includes housing.Housing is by positioned at the first bottom of near-end Face 310, enclose positioned at the second bottom surface 320 of distal end and the first bottom surface 310 of connection and the side wall 330 of the second bottom surface 320, shape jointly Into tubular hollow cavity.300 near-end of muffler sets an air inlet 340 being connected with air outlet pipe 220, and distal end sets one Gas outlet 350.In cavity vertically, i.e., some chambers are separated into the direction of gas outlet 350 from air inlet 340, and at least Section chambers volume is different, with the corresponding sound for eliminating different frequency range.Exemplary, each chamber volume is gradually reduced vertically.
Preferably, chamber is three, and first chamber 361, intermediate cavity 362 and second chamber are followed successively by from proximate 363.First chamber 361 is adjacent with the first bottom surface 310, and second chamber 363 is adjacent with the second bottom surface 320, and intermediate cavity 362 is located at Between first chamber 361 and second chamber 363.First conduit 371 turns on air inlet 340 and intermediate cavity 362, the second conduit 372 conducting intermediate cavities 362 and second chamber 363, the 3rd conduit 373 conducting first chamber 361 and second chamber 363, the 4th Conduit 374 turns on first chamber 361 and gas outlet 350.
Intermediate cavity 362 can be multiple.
The shape of muffler shell is not limited to cylindrical, may be arranged as cuboid-type or irregular shape.
The sound wave that vacuum pump 100 is spread out of is with air-flow successively by the first conduit 371, the second conduit 372, the 3rd conduit 373 And the 4th conduit 374, reflect, roll over successively in the different intermediate cavity 362 of volume, second chamber 363 and first chamber 361 Penetrate, energy is gradually cleared up.Wherein, first chamber 361, intermediate cavity 362, second chamber 363 correspond to noise reduction frequency for it is low, Medium, high frequency.Moreover, the first conduit 371, the second conduit 372, the 3rd conduit 373 and the 4th conduit 374 set narrow and small internal diameter, Make sound wave by when portion of energy be converted into thermal energy and be resolved.
Muffler is so arranged, make sound wave in muffler by stroke as long as possible to cut down energy, and not With refraction and reflection is realized in chamber, more preferable erasure effect is realized with less muffler axial distance.
Join Figure 13, in still another embodiment of the process, muffler 400 includes housing.Housing is by positioned at the first bottom of near-end Face 410, enclose positioned at the second bottom surface 420 of distal end and the first bottom surface 410 of connection and the side wall 430 of the second bottom surface 420, shape jointly Into tubular hollow cavity.Single chamber is formed in cavity.What 400 near-end of muffler setting one was connected with air outlet pipe 220 Air inlet 440, distal end set a gas outlet 450.First conduit 471 conducting air inlet 440 and chamber, and the first conduit 471 Distal end is close to the second bottom surface 420.Second conduit 472 turns on chamber and gas outlet 450, and the near-end of the second conduit 472 is close to the One bottom surface 420.
Sound wave is gradually cleared up in chamber internal reflection, refraction, energy.The length of first conduit 471 and the second conduit 472 is mesh Audio quarter-wave, with it is specific elimination purpose audio sound.Preferably, purpose audio is 1000Hz.
First conduit 471 and the second conduit 472 set narrow and small internal diameter, make sound wave by when portion of energy be converted into thermal energy It is resolved.
In noise through 100 gas conduction of vacuum pump, high frequency noise human ear can not be heard, the main of interference is produced to user For low frequency noise.The present embodiment can pointedly eliminate low frequency noise, make muffler structure simpler.
Join Figure 14 and Figure 15, in yet another embodiment of the invention, muffler 500 is arranged inside sealed box body 200, connection The outlet pipe of vacuum pump 100 and air outlet pipe 220.Muffler 500 includes housing, and housing is enclosed a hollow cavity, uses In the refraction and reflection of sound wave.The hollow cavity includes a cylindrical chamber 510 and a rectangular fluid chamber 520, wherein cylinder One of bottom surface of chamber 510 is connected with a face 521 of rectangular fluid chamber 520, cylindrical chamber 510 and rectangular fluid chamber 520 Inside be conducted.
The basal diameter of cylindrical chamber 510 is less than or equal to the length of side of rectangular 520 joint face 521 of fluid chamber.
The cylindrical chamber 510 of muffler 500 sets air inlet 540 and gas outlet 550, air inlet 540 and gas outlet 550 Setting at an angle, so that gas enters after hollow cavity reaches gas outlet by reflecting and refract to, occurs in this course Energy loss achievees the purpose that noise reduction.
Preferably, air inlet 540 is arranged at the bottom surface 511 of cylindrical chamber 510, and gas outlet 550 is arranged at cylinder body cavity The side of room 510.
Air inlet 540 is identical with the internal diameter of gas outlet 550, so that the pressure balance of two ports.
The present embodiment makes sound wave that irregular reflection and refraction occur, energy is disappeared by the change of hollow cavity shape Solution.
Join Figure 16 and Figure 17, in still another embodiment of the process, muffler 600 includes housing, and housing is enclosed in one Cavity body.The near-end of muffler 600 sets air inlet 640, and distal end sets gas outlet 650, air inlet 640 and gas outlet 650 it Between connected by the conduit 670 being arranged in housing.Conduit 670 forms sleeve structure with housing.Filled media is to inhale in conduit 670 Quiet down the vibrational energy of ripple, weakens the sound intensity.Further, medium is silencing cotton.
670 side wall of conduit opens up some through holes 680, is turned on so that conduit 670 is realized with cavity.Through hole 680 is along conduit 670 The circumferentially-spaced distribution of side wall, i.e. conduit 670 open up through hole to multiple directions.
Preferably, housing by positioned at the first bottom surface 610 of near-end, positioned at the second bottom surface 620 of distal end and connection the first bottom The side wall 630 of 610 and second bottom surface 620 of face is enclosed the hollow cavity of cylinder jointly.First bottom surface 610 sets air inlet 640, the second bottom surface 620 sets gas outlet 640.
Preferably, through-hole diameter is less than 1mm.
Preferably, the cavity that housing is enclosed is separated into several chambers from proximate arrangement.
Sound wave from vacuum pump 100 enters conduit 670 from air inlet 640, and gas outlet 650 is reached after medium noise reduction, The sound wave of specific frequency is decayed, and the sound intensity weakens.During this, 680 diffraction of acoustic wave segment via through holes enters cavity, in sky Intracavitary is through superrefraction and reflection, further decay.
Muffler realizes using aperture the diffraction of sound wave so set, the mode of binding medium noise reduction and cavity noise reduction, Multipath cuts down the sound intensity.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one A independent technical solution, this narrating mode of specification is only that those skilled in the art will should say for clarity For bright book as an entirety, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention Or change should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of muffler, it is characterised in that including the hollow cavity being enclosed jointly by the first bottom surface, the second bottom surface and side wall Body, the side wall connect the first bottom surface and the second bottom surface, and described muffler one end configures air inlet, opposite other end configuration outlet Mouthful, the cavity is separated into some chambers vertically, and the chamber includes the first chamber adjacent with the first bottom surface and second The adjacent second chamber in bottom surface and the intermediate cavity between first chamber and second chamber, the air inlet and intermediate cavity Gas communication, the intermediate cavity and second chamber gas communication, the first chamber and second chamber gas communication, it is described go out Gas port and first chamber gas communication.
2. muffler according to claim 1, it is characterised in that the volume of at least partly described chamber differs.
3. muffler according to claim 1, it is characterised in that further include the first conduit, the second conduit, the 3rd conduit and 4th conduit, the first conduit conducting air inlet and intermediate cavity, the second conduit conducting intermediate cavity and second chamber, the 3rd conduit Turn on first chamber and second chamber, the 4th conduit conducting first chamber and gas outlet.
4. muffler according to claim 3, it is characterised in that the first conduit, the second conduit, the 3rd conduit and the 4th are led Pipe is configured as arranging successively along gas circuit direction.
5. muffler according to claim 1, it is characterised in that the intermediate cavity is at least one.
6. a kind of muffler, including housing, it is characterised in that the housing is enclosed hollow cavity, the housing it is near End configuration air inlet, the distal end configuration gas outlet of the housing, the cavity are separated into some chambers, institute from proximate Stating chamber includes relative position close to the first chamber of near-end, relative position close to the second chamber of distal end and positioned at first chamber Intermediate cavity between second chamber, the air inlet and intermediate cavity gas communication, the intermediate cavity and second chamber Gas communication, the first chamber and second chamber gas communication, the gas outlet and first chamber gas communication.
7. muffler according to claim 6, it is characterised in that the volume of at least partly described chamber differs.
8. muffler according to claim 6, it is characterised in that further include the first conduit, the second conduit, the 3rd conduit and 4th conduit, the first conduit conducting air inlet and intermediate cavity, the second conduit conducting intermediate cavity and second chamber, the 3rd conduit Turn on first chamber and second chamber, the 4th conduit conducting first chamber and gas outlet.
9. muffler according to claim 3, it is characterised in that the first conduit, the second conduit, the 3rd conduit and the 4th are led Pipe is configured as arranging successively along gas circuit direction.
10. a kind of refrigerator, including accommodate the sealed box body of vacuum pump, it is characterised in that further include as claim 1-9 is any The muffler, the vacuum pump are connected with muffler.
CN201711311262.XA 2017-12-11 2017-12-11 Vacuum pump discharges pipe muffler and refrigerator Pending CN107989774A (en)

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Application Number Priority Date Filing Date Title
CN201711311262.XA CN107989774A (en) 2017-12-11 2017-12-11 Vacuum pump discharges pipe muffler and refrigerator
EP18889024.8A EP3726055A4 (en) 2017-12-11 2018-12-07 Vacuum pump vent pipe silencer and refrigerator having same
US16/771,644 US20210180581A1 (en) 2017-12-11 2018-12-07 Vacuum pump exhaust pipe muffler and refrigerator having same
PCT/CN2018/119773 WO2019114625A1 (en) 2017-12-11 2018-12-07 Vacuum pump vent pipe silencer and refrigerator having same
AU2018386133A AU2018386133A1 (en) 2017-12-11 2018-12-07 Vacuum pump exhaust pipe muffler and refrigerator having same

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WO2019114627A1 (en) * 2017-12-11 2019-06-20 青岛海尔股份有限公司 Cavity silencer and refrigerator
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WO2019114625A1 (en) * 2017-12-11 2019-06-20 青岛海尔股份有限公司 Vacuum pump vent pipe silencer and refrigerator having same
WO2019114624A1 (en) * 2017-12-11 2019-06-20 青岛海尔股份有限公司 Refrigerator
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CN112761931A (en) * 2019-10-21 2021-05-07 安徽美芝制冷设备有限公司 Connection structure, exhaust muffler, muffler and compressor
CN112761931B (en) * 2019-10-21 2023-07-04 安徽美芝制冷设备有限公司 Connection structure, exhaust muffler, muffler and compressor
CN111197899A (en) * 2020-03-09 2020-05-26 海信（山东）冰箱有限公司 A kind of refrigerator
CN111197899B (en) * 2020-03-09 2022-01-07 海信（山东）冰箱有限公司 A kind of refrigerator

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EP3726055A1 (en) 2020-10-21
EP3726055A4 (en) 2020-11-11

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