WO2019114624A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2019114624A1
WO2019114624A1 PCT/CN2018/119770 CN2018119770W WO2019114624A1 WO 2019114624 A1 WO2019114624 A1 WO 2019114624A1 CN 2018119770 W CN2018119770 W CN 2018119770W WO 2019114624 A1 WO2019114624 A1 WO 2019114624A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
sealing body
lower sealing
vacuum
disposed
Prior art date
Application number
PCT/CN2018/119770
Other languages
English (en)
French (fr)
Inventor
张�浩
杨春
陈建全
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 EP18889916.5A priority Critical patent/EP3726166B1/en
Priority to US16/643,521 priority patent/US11668510B2/en
Priority to AU2018386132A priority patent/AU2018386132B2/en
Priority to ES18889916T priority patent/ES2913644T3/es
Priority to NZ762027A priority patent/NZ762027A/en
Priority to PL18889916T priority patent/PL3726166T3/pl
Publication of WO2019114624A1 publication Critical patent/WO2019114624A1/zh

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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3409—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23L3/3418—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • A23L3/363—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in form of powder, granules, or flakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/168—Pumps specially adapted to produce a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • F04D29/602—Mounting in cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • 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
    • F25D17/042—Air treating means within refrigerated spaces
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
    • 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
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound
    • 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
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment

Definitions

  • the invention belongs to the technical field of noise reduction of refrigeration equipment, and particularly relates to a seal 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 soundproof refrigerator vacuum assembly comprising a sealed box body containing a vacuum pump, the sealed box body comprising an upper sealing body and a lower sealing body, the upper sealing body and the lower sealing body being fastenable to define a vacuum chamber is disposed in the accommodating chamber;
  • the vacuum assembly further includes a gas pipe member, the gas pipe member includes an integrally formed intake pipe, an air outlet pipe and a substrate, and the air inlet pipe and the air outlet pipe are disposed on the substrate;
  • the sealed box body is provided with a notch portion, and the substrate is provided The outer edge cooperates with the shape of the notch; wherein the vacuum pump is connected to the muffler.
  • a sealing unit is disposed between the notch portion and the substrate.
  • the periphery of the notch portion is provided with a rib, and the outer edge of the substrate is provided with a groove, and the rib is matched with the groove.
  • the sealing unit is disposed at a matching gap between the rib and the groove.
  • the sealing unit is an elastic material.
  • the sealing unit is annular.
  • the muffler includes a hollow cavity formed by the first bottom surface, the second bottom surface and the side wall, and the side wall is connected to the first bottom surface and the second bottom surface, and the muffler is disposed at one end.
  • the gas 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, a second chamber adjacent to the second bottom surface, and An intermediate chamber between the first chamber and the second chamber, the air inlet and the intermediate chamber are gas-conducting, the intermediate chamber and the second chamber are in gas conduction, and the first chamber and the second chamber are gas-conducting
  • the gas outlet is electrically connected to the first chamber.
  • the muffler includes a hollow cavity formed by the first bottom surface, the second bottom surface and the side wall, and the side wall is connected to the first bottom surface and the second bottom surface, and the first bottom surface is disposed a gas port, the second bottom surface is provided with an air outlet, the first conduit is connected to the air inlet and the cavity, the second conduit is connected to the cavity and the air outlet, the distal end of the first conduit is close to the second bottom surface, and the proximal end of the second conduit Close to the first bottom surface.
  • the muffler includes a housing and a conduit disposed in the housing, the housing enclosing a hollow cavity, the proximal end of the housing is provided with an air inlet, and the distal end is provided with an air outlet, the conduit The air inlet and the air outlet are connected, the medium is filled in the duct, and a plurality of through holes are formed in the side wall of the duct to conduct the duct and the cavity.
  • an embodiment of the present invention provides a refrigerator including a box body, a fresh space provided in the box body, and a vacuum assembly according to any of the above, wherein the vacuum component is connected to the fresh space.
  • the vacuum assembly of the refrigerator provided by the invention is provided with an integrally formed gas pipe member, which facilitates assembly of the vacuum pump, and can realize sealing and sound insulation, and prevents vibration noise of the vacuum pump from being transmitted through the sealed box body.
  • 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.

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  • 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)
  • Nutrition Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

一种冰箱真空组件，包括：上密封体（230）和下密封体（240），上密封体（230）与下密封体（240）能够扣合以限定密封的容纳腔；真空泵（100），设置于容纳腔内；容纳腔内配置若干板状构件（260，260a，260b），板状构件（260，260a，260b）设置于真空泵（100）与密封盒体（200）的侧壁之间以隔音；上密封体（230）配置若干抵持件（231），抵持件（231）在上密封体（230）与下密封体（240）盖合时抵接于板状构件（260，260a，260b）顶部，抵持件（231）与板状构件（260，260a，260b）接触的一端配置有台阶部（2311），台阶部（2311）顶面与板状构件（260，260a，260b）的顶面相抵接，台阶部（2311）侧面与板状构件（260，260a，260b）的侧面相抵接；下密封体（240）配置若干肋（242，244），肋（242，244）与侧壁间隔设置以限定板状构件（260，260a，260b）的限位槽；下密封体（240）配置若干导向槽（245），导向槽（245）沿竖直方向延伸以导引板状构件（260，260a，260b）。

Description

冰箱
本申请要求了申请日为2017年12月11日，申请号为201711310083.4，发明名称为“具有板状隔音构件的真空组件及冰箱”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于制冷设备降噪技术领域，具体涉及一种降低真空泵噪音的密封件。
背景技术
冰箱内食物的保鲜与温度、湿度及气体环境密切相关。其中，氧气是造成食物腐败变质、细菌繁殖的重要因素。通过抽吸间室内的氧气来控制冰箱的氮氧比例可以显著地延长食物的保鲜时间。
氧气可以通过真空泵从特定空间内抽出，并被排放到冰箱外部。但是，气体作为一种传导声音的介质，在排放的过程中会将箱体内的噪音传导到冰箱外部空间，形成噪音干扰。
发明内容
本发明的目的在于提供一种密封装置，以解决箱体噪音输出的问题。
为实现上述发明目的，本发明提供一种隔音的冰箱真空组件，包括容纳有真空泵的密封盒体，密封盒体包括上密封体和下密封体，上密封体与下密封体能够扣合以限定容纳腔，容纳腔内放置真空泵；真空组件还包括气管构件，气管构件包括一体成型的进气管、出气管及基板，进气管和出气管穿设于基板上；密封盒体设置缺口部，基板的外缘与缺口部形状相配合；其中，真空泵与消音器连接。
作为本发明一实施方式的进一步改进，缺口部与基板之间配置密封单元。
作为本发明一实施方式的进一步改进，缺口部周缘设置凸棱，基板外缘设置凹槽，凸棱与凹槽相配合。
作为本发明一实施方式的进一步改进，密封单元配置于凸棱与凹槽的配合间隙。
作为本发明一实施方式的进一步改进，密封单元为弹性材质。
作为本发明一实施方式的进一步改进，密封单元为环状。
作为本发明一实施方式的进一步改进，消音器包括由第一底面、第二底面及侧壁共同围合形成的中空的腔体，侧壁连接第一底面及第二底面，消音器一端配置进气口，相对另一端配置出气口，腔体沿轴向被分隔为若干腔室，腔室包括与第一底面相邻的第一腔室、与第二底面相邻的第 二腔室及位于第一腔室与第二腔室之间的中间腔室，进气口与中间腔室气体导通，中间腔室与第二腔室气体导通，第一腔室与第二腔室气体导通，出气口与第一腔室气体导通。
作为本发明一实施方式的进一步改进，消音器包括由第一底面、第二底面及侧壁共同围合形成的中空的腔体，侧壁连接第一底面及第二底面，第一底面配置进气口，第二底面配置出气口，第一导管导通进气口与腔体，第二导管导通腔体与出气口，第一导管的远端靠近第二底面，第二导管的近端靠近第一底面。
作为本发明一实施方式的进一步改进，消音器包括壳体和设置于壳体内的导管，壳体围合形成中空的腔体，壳体的近端设置进气口，远端设置出气口，导管连通进气口与出气口，导管内填充介质，且导管侧壁开设若干通孔以导通导管与腔体。
为实现上述目的，本发明一实施方式提供一种冰箱，包括箱体，箱体内设置保鲜空间，还包括如上任一所述的真空组件，真空组件与保鲜空间相连接。
与现有技术相比，本发明提供的冰箱真空组件，配置一体成型的气管构件，便于真空泵的组装，且能够实现密封隔音，防止真空泵的振动噪音经密封盒体传导。
附图说明
图1是本发明一实施方式的密封盒体的结构示意图；
图2是本发明一实施方式的密封盒体内外的部件示意图；
图3是本发明一实施方式的密封盒体的俯视图；
图4是本发明一实施方式的密封盒体的爆炸示意图；
图5是本发明一实施方式的密封盒体的正视图；
图6是本发明一实施方式中密封件的俯视图；
图7是本发明一实施方式中密封件的结构示意图；
图8是本发明一实施方式中下密封体的俯视图；
图9是本发明一实施方式中上密封体与金属板的安装示意图；
图10是本发明一实施方式中下密封体的结构示意图；
图11是图10的爆炸示意图；
图12是本发明一实施方式中消音器的透视示意图；
图13是本发明又一实施方式中消音器的透视示意图；
图14是本发明又一实施方式中真空泵与消音器的结构示意图；
图15是本发明又一实施方式中消音器的结构示意图；
图16是本发明又一实施方式中消音器的透视图；
图17是本发明又一实施方式中消音器的纵截面示意图。
具体实施方式
以下将结合附图所示的具体实施方式对本发明进行详细描述。但这些实施方式并不限制本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。
本发明内所描述的表达位置与方向的词，均是以真空泵为参照，靠近真空泵的一端为近端，远离真空泵的一端为远端。
参图1至图3，在本发明一实施方式中，真空泵100容纳于密封盒体200内，通过进气管210和出气管220与外界气体导通。其中，进气管210近端连通真空泵100的进气管路，远端与冰箱间室内的保鲜空间(未图示)相连通；出气管220近端连通真空泵100的出气管路，远端向密封盒体200外部延伸。密封盒体200阻断了真空泵100与安装环境的气体连通，达到隔音的效果。保鲜空间可以为一独立的间室，也可以为位于间室局部的封闭或半封闭的空间。
密封盒体200包括上密封体230和下密封体240。上密封体230包括一体成型的顶壁和侧壁，共同限定一下端开口的容纳腔，下密封体240包括一体成型的底壁和侧壁，共同限定一上端开口的容纳腔，上、下密封体240的开口相配合，可以互相扣合形成真空泵100的容纳空间。
优选的，上密封体230和下密封体240为塑料材质。
参图4，上密封体230与下密封体240之间设置密封件。上密封体230的侧壁下缘形成第一凹槽，下密封体240的侧壁上缘形成第二凹槽，第一凹槽与第二凹槽相配合，形成密封圈250的安装槽，如此可以确保上密封体230与下密封体240扣合后的气密性，防止声音从密封盒体200的拼接缝隙传出。密封圈250为环状，具有圆形截面，其采用弹性材质，套设于安装槽内时的安装拉伸量为2-5％，当上密封体230与下密封体240扣合时，对密封圈250施加压力形成20-30％的压缩量，如此确保密封效果。
图4及图5示出上密封体230与下密封体240的接合处设置缺口部251，用于穿设连接真空泵100的线材。为了保证密封盒体200的密封性，在缺口部251设置可扣合的密封环253。该密封环253采用弹性材质，与密封圈250一体成型。
参图6和图7，密封环253由柔性连接的两个H型构件组成，H型构件能够彼此相扣合形成与缺口部251配合的安装状态。H型构件具有彼此平行的第一臂2531和第二臂2532，以及连接第一臂2531和第二臂2532的连接部2533。第一臂2531与第二臂2532可以共同配合将缺口部251边缘的盒体侧壁夹持其间，防止密封环253从缺口部251脱落。连接部2533穿过缺口部连接第一臂2531和第二臂2532。连接部2533具有凹陷的弧形表面。H型构件彼此扣合时，其弧形 表面共同围合形成中空腔，以使线材穿过。
对于多根线材穿过缺口部251的情况，如果作为整体穿过缺口部251，由于线材截面为圆形，线材间形成的缝隙会降低密封性。对此情况，连接部2533的弧形表面可以为波浪状(图未示)，以在安装状态时形成多个彼此独立的中空腔，更好地密封圆形截面的线材。
参图8，密封盒体200内设置若干金属板260，金属板260设置于真空泵100与密封盒体200侧壁之间。由于金属板260密度高，对声音的穿越造成阻隔，可以起到隔音降噪的效果。
优选的，金属板260为铝板、钢板或镀锌板。
参图8和图9，在本发明一实施例中，金属板260为两片，分别贴合密封盒体200相对的两壁设置。下密封体240及上密封体230分别设置限位结构以固定金属板260a、260b。
图8示出下密封体240的底壁设置与侧壁241平行且间隔一距离d的第一肋242，以及与侧壁243平行且间隔一距离D的第二肋244，其中侧壁241与侧壁243相对，d为金属板260a的厚度，D为金属板260b的厚度。第一肋242与侧壁241的间隔形成金属板260a的限位槽，第二肋244与侧壁243的间隔形成限定金属板260b的限位槽，分别限定金属板260a、260b在水平方向的位移。
参图8和图10，下密封体240还设置若干导向槽245，导向槽245沿竖直方向延伸，其延伸方向与金属板260安装时的插入方向一致，导引金属板260安装到预设的位置。
图9示出上密封体230设置若干抵持件231。当上密封体230与下密封体240盖合时，抵持件231恰抵接于金属板260顶部。抵持件231与金属板260接触的一端设置台阶部2311，配合上密封体230的侧壁形成倒U字型的空间，以容纳金属板260顶部。台阶部2311的顶面与金属板260的顶面相抵接，可以限定其在竖直方向的位移，台阶部的侧面与金属板260的侧面相抵接，可以限定其在水平方向的位移。
金属板260与密封盒体200侧壁贴合设置，真空泵100的震动可能引起金属板260的共振，形成新的噪音并经密封盒体200的壁向外传导。上述限位结构严格限定了金属板260的位置，避免共振产生噪音。
在本发明一实施例中，上密封体230或下密封体240之一、或者上密封体230与下密封体240的接合部共同设置缺口部246，以穿设气管组件。
图10和图11示例性示出缺口部246设置于下密封体240的情形。缺口部246开设于下密封体240靠近上缘的侧壁，缺口部246周缘设置凹槽，以容纳密封单元270，确保密封盒体200的气密性。密封单元270为弹性材质的环状结构。
气管组件包括一体成型的进气管210、出气管220及基板。进气管210和出气管220穿设于基板上，基板的外缘与缺口部246形状相配合。基板外缘设置凹槽，与缺口部246周缘的凸棱相 配合，通过二者的配合可以将基板卡持固定于缺口部，二者的间隙处嵌设密封单元270。
真空泵100所处的容纳腔空间紧凑，不利于气体管路的连接和穿设操作。通过将气管组件设置为嵌装结构，可以在完成其与真空泵100的连接后方便地嵌设于缺口部246中固定，再扣合上、下密封体240完成组装。
出气管220的气体经消音后排向冰箱外部。参图1及图12，在本发明一实施例中，真空泵100通过出气管220与消音器300连接。消音器300包括壳体。壳体由位于近端的第一底面310、位于远端的第二底面320及连接第一底面310和第二底面320的侧壁330共同围合，形成圆柱体形的中空腔体。消音器300近端设置一与出气管220连接的进气口340，远端设置一出气口350。腔体内沿轴向，即自进气口340向出气口350的方向，被分隔为若干腔室，且至少部分腔室体积不同，以对应消除不同频段的声音。示例性的，各腔室体积沿轴向逐渐减小。
优选的，腔室为三个，自近端向远端依次为第一腔室361、中间腔室362及第二腔室363。第一腔室361与第一底面310相邻，第二腔室363与第二底面320相邻，中间腔室362位于第一腔室361与第二腔室363之间。第一导管371导通进气口340与中间腔室362，第二导管372导通中间腔室362与第二腔室363，第三导管373导通第一腔室361与第二腔室363，第四导管374导通第一腔室361与出气口350。
中间腔室362可以为多个。
消音器壳体的形状不限于圆柱体形，还可以设置为长方体型或不规则的外形。
真空泵100传出的声波随气流依次经过第一导管371、第二导管372、第三导管373及第四导管374，在体积相异的中间腔室362、第二腔室363及第一腔室361内依次反射、折射，能量被逐渐消解。其中，第一腔室361、中间腔室362、第二腔室363对应消音频率为低、中、高频。而且，第一导管371、第二导管372、第三导管373及第四导管374设置狭小的内径，使声波通过时部分能量转化为热能被消解。
消音器被如此设置，使声波在消音器内通过尽可能长的行程以削减能量，并在不同腔室内实现折射和反射，用较小的消音器轴向距离实现更好的消音效果。
参图13，在本发明又一实施例中，消音器400包括壳体。壳体由位于近端的第一底面410、位于远端的第二底面420及连接第一底面410和第二底面420的侧壁430共同围合，形成圆柱体形的中空腔体。腔体内形成单一腔室。消音器400近端设置一与出气管220连接的进气口440，远端设置一出气口450。第一导管471导通进气口440与腔室，且第一导管471的远端靠近第二底面420。第二导管472导通腔室与出气口450，且第二导管472的近端靠近第一底面420。
声波在腔室内反射、折射，能量逐渐消解。第一导管471与第二导管472的长度为目的音频的四分之一波长，以特定消除目的音频的声音。优选的，目的音频为1000Hz。
第一导管471及第二导管472设置狭小的内径，使声波通过时部分能量转化为热能被消解。
经真空泵100气体传导的噪音中，高频噪音人耳无法听到，对用户产生干扰的主要为低频噪音。本实施例可以针对性地消除低频噪音，使消音器结构更加简单。
参图14及图15，在本发明再一实施例中，消音器500设置于密封盒体200内部，连接真空泵100的出气管路与出气管220。消音器500包括壳体，壳体围合形成一中空的腔体，用于声波的折射和反射。该中空腔体包括一圆柱体腔室510及一长方体腔室520，其中圆柱体腔室510的底面之一与长方体腔室520的一个面521连接，圆柱体腔室510与长方体腔室520的内部相导通。
圆柱体腔室510的底面直径小于或等于长方体腔室520连接面521的边长。
消音器500的圆柱体腔室510设置进气口540和出气口550，进气口540与出气口550成一角度设置，以使气体进入中空腔体后经过反射和折射到达出气口，在这一过程中发生能量损耗达到消音的目的。
优选的，进气口540设置于圆柱体腔室510的底面511，出气口550设置于圆柱体腔室510的侧面。
进气口540与出气口550的内径相同，以使两个端口的压力平衡。
本实施例通过中空腔体形状的变化，使声波发生不规律的反射和折射，能量被消解。
参图16及图17，在本发明又一实施例中，消音器600包括壳体，壳体围合形成一中空腔体。消音器600的近端设置进气口640，远端设置出气口650，进气口640与出气口650之间由设置于壳体内的导管670连通。导管670与壳体形成套管结构。导管670内填充介质以吸收声波的振动能量，减弱声强。进一步地，介质为消音棉。
导管670侧壁开设若干通孔680，以使导管670与腔体实现导通。通孔680沿导管670侧壁周向间隔分布，即导管670向多个方向开设通孔。
优选的，壳体由位于近端的第一底面610、位于远端的第二底面620及连接第一底面610和第二底面620的侧壁630共同围合形成圆柱形的中空腔体。第一底面610设置进气口640，第二底面620设置出气口640。
优选的，通孔直径小于1mm。
优选的，壳体围合形成的腔体被分隔为自近端向远端排列的若干个腔室。
来自真空泵100的声波从进气口640进入导管670，经介质消音后到达出气口650，特定频率的声波发生衰减，声强减弱。这一过程中，部分声波经通孔680衍射进入空腔，在空腔内经过折射与反射，进一步衰减。
消音器如此设置，结合介质消音和空腔消音的方式，并采用小孔实现声波的衍射，多途径消减声强。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种冰箱真空组件，其特征在于，包括：
    上密封体和下密封体，所述上密封体与下密封体能够扣合以限定密封的容纳腔；
    真空泵，设置于所述容纳腔内；
    所述容纳腔内配置若干板状构件，板状构件设置于真空泵与密封盒体的侧壁之间以隔音；
    所述上密封体配置若干抵持件，所述抵持件在上密封体与下密封体盖合时抵接于板状构件顶部，所述抵持件与板状构件接触的一端配置有台阶部，所述台阶部顶面与板状构件的顶面相抵接，所述台阶部侧面与板状构件的侧面相抵接；
    所述下密封体配置若干肋，肋与所述侧壁间隔设置以限定板状构件的限位槽；
    所述下密封体配置若干导向槽，导向槽沿竖直方向延伸以导引板状构件。
  2. 根据权利要求1所述的冰箱真空组件，其特征在于，所述上密封体和下密封体为塑料体。
  3. 根据权利要求1所述的冰箱真空组件，其特征在于，所述板状构件为金属板。
  4. 根据权利要求1所述的冰箱真空组件，其特征在于，所述板状构件为铝板、钢板或镀锌板。
  5. 根据权利要求1所述的冰箱真空组件，其特征在于，所述金属板贴合于所述侧壁。
  6. 根据权利要求1所述的冰箱真空组件，其特征在于，所述板状构件为二个，分别与密封盒体相对的两侧壁相邻设置。
  7. 根据权利要求1所述的冰箱真空组件，其特征在于，所述肋与侧壁平行设置以限定金属板在水平方向的位移。
  8. 根据权利要求1所述的冰箱真空组件，其特征在于，所述肋与侧壁间隔的距离为金属板的厚度。
  9. 一种冰箱，包括箱体，所述箱体内设置保鲜空间，其特征在于，还包括如权利要求1所述的真空组件，所述真空组件与所述保鲜空间相连接。
  10. 根据权利要求9所述的冰箱，其特征在于，所述保鲜空间为独立的间室，或为设置于间室内的封闭或半封闭空间。
PCT/CN2018/119770 2017-12-11 2018-12-07 冰箱 WO2019114624A1 (zh)

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