WO2022217867A1 - 一种后罩装置及衣物处理设备 - Google Patents

一种后罩装置及衣物处理设备 Download PDF

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Publication number
WO2022217867A1
WO2022217867A1 PCT/CN2021/123225 CN2021123225W WO2022217867A1 WO 2022217867 A1 WO2022217867 A1 WO 2022217867A1 CN 2021123225 W CN2021123225 W CN 2021123225W WO 2022217867 A1 WO2022217867 A1 WO 2022217867A1
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WO
WIPO (PCT)
Prior art keywords
side plate
sound
rear cover
air
side panel
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.)
Ceased
Application number
PCT/CN2021/123225
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English (en)
French (fr)
Inventor
周胜利
吴江
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.)
Wuxi Little Swan Electric Co Ltd
Original Assignee
Wuxi Little Swan Electric 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
Priority claimed from CN202110394536.6A external-priority patent/CN115198500A/zh
Priority claimed from CN202120745756.4U external-priority patent/CN215441108U/zh
Application filed by Wuxi Little Swan Electric Co Ltd filed Critical Wuxi Little Swan Electric Co Ltd
Priority to EP21936734.9A priority Critical patent/EP4324976A4/en
Publication of WO2022217867A1 publication Critical patent/WO2022217867A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the present application relates to the technical field of clothing care, and in particular, to a rear cover device and clothing treatment equipment.
  • laundry treatment equipment is favored by more and more users as a drying tool.
  • the embodiments of the present application are expected to provide a back cover device and a clothing treatment device with a better noise reduction effect.
  • the embodiment of the present application provides a rear cover device for clothes treatment equipment, including:
  • An inner cover is formed with an air flow channel, the inner cover includes a first side plate and a plurality of protrusions protruding from the surface of the first side plate, the air flow channel and each of the protrusions are located at opposite sides of the first side panel;
  • the outer cover is arranged on the side of the inner cover away from the air flow channel, the outer cover and the inner cover define a muffler cavity, each of the protrusions is located in the muffler cavity, and the inner cover is provided with There is a sound absorption hole communicating with the air flow channel and the muffler cavity, and at least part of the sound absorption hole penetrates the first side plate and the protrusion.
  • the protruding thickness of the protrusion on the first side plate is 2 mm ⁇ 5 mm.
  • the hole depth of the sound absorbing hole passing through the first side plate and the protrusion is 4mm-9mm.
  • the sound absorption hole has an equivalent diameter of 2.5mm-10mm.
  • the outer cover is a metal piece; and/or the inner cover is a plastic piece.
  • the outer cover includes a second side panel, the first side panel and the second side panel are stacked at intervals, and the protruding thickness of the protrusion on the first side panel is a predetermined thickness.
  • the distance between the first side plate and the second side plate is 0.1 times to 0.3 times.
  • the outer cover includes a second side panel, the first side panel and the second side panel are stacked at intervals, and the distance between the first side panel and the second side panel is 7mm ⁇ 20mm.
  • the rear cover device includes a sound absorbing material disposed within the sound-absorbing cavity.
  • each of the sound-absorbing holes penetrates through the first side plate and the protrusions
  • the sound-absorbing material includes a sound-absorbing film layer
  • the sound-absorbing film layer covers each of the protrusions away from each other.
  • One end of the first side plate is used to block each of the sound absorption holes.
  • each of the sound-absorbing holes penetrates through the first side plate and the protrusion
  • the sound-absorbing material includes a flexible sound-absorbing material
  • the flexible sound-absorbing material is in a compressed state and blocks each of the sound absorption holes. the sound absorption hole.
  • the outer cover includes a second side panel, the first side panel and the second side panel are laminated at intervals, and the first side panel and the second side panel hold the flexible suction. Acoustic material is squeezed between the two.
  • the outer cover includes a second side panel, the first side panel and the second side panel are stacked at intervals, and the rear cover device includes a second side panel disposed on the first side panel and the second side panel.
  • the partition plate between the two side plates, the partition plate and the first side plate squeeze the flexible sound-absorbing material between them, and the air is formed between the partition plate and the second side plate mezzanine.
  • a side of the inner cover facing away from the outer cover is open, the airflow channel includes an impeller installation area and an air supply area, and the air supply area is located downstream of the impeller installation area along the airflow direction, so The airflow channel takes in air from the opening of the impeller installation area and supplies air from the opening of the air supply area.
  • An embodiment of the present application provides a clothes treatment device, the clothes treatment device has a circulating air duct, and the clothes treatment device includes a box body, a cylindrical part disposed in the box body, and a back cover of any of the embodiments of the present application.
  • the cylinder part is provided with a clothes treating chamber, and the air flow channel and the clothes treating chamber are both located on the circulating air duct.
  • the rear side wall of the box body is provided with an air outlet and an air inlet port;
  • the rear cover device is arranged outside the box body and is located on the rear side of the rear side wall of the box body, the The airflow channel communicates with the air outlet and the air inlet.
  • the clothes treating apparatus includes a base, an evaporator, a condenser and a wind wheel, the wind wheel is arranged in the air flow channel, the box is covered above the base, and the evaporation
  • the evaporator and the condenser are arranged on the base and are located on the circulating air duct, and the air flow from the clothes treatment chamber flows through the evaporator and the condenser in sequence and then enters the air flow passage.
  • the first side plate is used as a perforated thin plate, which forms a perforated plate sound absorption structure with the muffler cavity behind it, and the air in the sound absorption hole rubs against the hole wall due to resonance and loses sound energy , reduce the noise radiated by the rear cover device.
  • the protrusions in the embodiments of the present application can increase the thickness of the air column in the sound absorption hole, that is, increase the flow path of the air flow in the sound absorption hole, and improve the low frequency response. The sound absorption effect of component noise.
  • FIG. 1 is a simplified schematic diagram of a clothes treating apparatus according to an embodiment of the present application, wherein arrows indicate airflow paths;
  • FIG. 2 is a schematic diagram of the cooperation between the rear cover device and the rear side wall of the box according to an embodiment of the application;
  • Fig. 3 is the rear view of Fig. 2;
  • FIG. 4 is a schematic exploded view of the structure shown in FIG. 2 from another perspective;
  • Fig. 5 is the schematic diagram of another view of the structure shown in Fig. 4;
  • FIG. 6 is a schematic structural diagram of a rear cover device according to an embodiment of the application.
  • Fig. 7 is the partial enlarged schematic diagram of A place in Fig. 6;
  • FIG. 8 is a schematic diagram of the structure shown in FIG. 6 from another perspective
  • FIG. 9 is a simplified cross-sectional view of the rear cover device according to the first embodiment of the application.
  • Fig. 10 is a partial enlarged schematic diagram at B in Fig. 9;
  • FIG. 11 is a partial schematic view of a simplified cross-sectional view of the rear cover device according to the second embodiment of the application, wherein the cutting position and the partial display position are the same as those of FIG. 10 ;
  • FIG. 12 is a partial schematic diagram of a simplified cross-sectional view of a rear cover device according to a third embodiment of the application, wherein the cutting position and the partial display position are the same as those of FIG. 10 ;
  • FIG. 13 is a partial schematic diagram of a simplified cross-sectional view of the rear cover device according to the fourth embodiment of the application, wherein the cutting position and the partial display position are the same as those of FIG. 10 ;
  • FIG. 14 is a partial schematic diagram of a simplified cross-sectional view of the rear cover device according to the second embodiment of the application, wherein the cutting position and the partial display position are the same as those of FIG. 10 .
  • the embodiment of the present application provides a rear cover device 7, which is used in a clothes treatment device to guide the flow of the circulating airflow of the clothes treatment device.
  • Embodiments of the present application provide a clothing treatment device, which has a circulating air duct.
  • the clothes treatment equipment includes a box body 1, a cylindrical portion 2 provided in the box body 1, and a rear cover device 7 according to any embodiment of the present application.
  • the cylinder part 2 has a clothes treatment chamber 2a, the circulation air duct communicates with the clothes treatment chamber 2a, and the airflow passage 71a is located on the circulation air duct, that is to say, the airflow in the circulation air duct will flow through the rear cover device 7 The interior and laundry treatment chamber 2a.
  • the specific type of the laundry treatment device is not limited, for example, it may be a clothes dryer, an all-in-one washer and dryer, and the like.
  • the tub portion 2 includes an inner tub and an outer tub, and the inner tub is rotatably disposed in the outer tub.
  • the drum unit 2 is only provided with an inner tub, but not an outer tub, that is, in this embodiment, the clothes treating apparatus has only one tub.
  • the rear cover device 7 may be provided in the case 1 or outside the case 1 .
  • the rear cover device 7 is provided in the box body 1, that is, the rear cover device 7 is hidden in the box body 1.
  • the rear cover device 7 is disposed outside the box body 1 and is located at the rear side of the rear side wall 11 of the box body 1 .
  • the rear side wall 11 of the box body 1 is provided with an air outlet 1a and an air inlet 1b, and the air passage 71a communicates with the air outlet 1a and the air inlet 1b.
  • the rear cover device 7 is exposed outside the clothes treating apparatus, and the noise generated by the rear cover device 7 is directly radiated to the surrounding environment. Therefore, the noise reduction treatment of the rear cover device 7 is particularly important.
  • the clothes treatment apparatus is equipped with a condensing device for cooling and dehumidification, a heating element for heating the dehumidified gas, and a fan wheel 6 on the circulating air duct located outside the clothes treatment chamber 2a. It is used to make the airflow in the circulating air duct form a directional flow.
  • the hot dry air flow enters the clothes treatment chamber 2a from the downstream of the circulating air duct.
  • the dry hot air flows through the surface of the wet clothes and exchanges heat and moisture with the wet clothes. , absorb the moisture in the clothes and turn it into a hot and humid airflow, which enters the upstream of the circulating air duct, and forms a low-temperature drying airflow after condensation and dehumidification by the condensing device in the circulating air duct.
  • the hot air enters the laundry treatment chamber 2a again, and the cycle runs in this way to achieve continuous and efficient drying of the laundry.
  • the clothes treating apparatus includes a base 5, an evaporator 3 and a condenser 4, the box 1 is covered above the base 5, and the evaporator 3 and the condenser 4 are disposed on the base 5 and located in the circulation.
  • both the evaporator 3 and the condenser 4 are located on the circulating air duct, and the evaporator 3 is located upstream of the condenser 4 along the airflow direction. into the airflow channel 71a.
  • the evaporator 3 and the condenser 4 are part of the heat pump system, that is to say, the clothes treating apparatus of this embodiment adopts the heat pump technology to condense, dehumidify and heat the airflow.
  • the evaporator 3 serves as a condensing device for cooling and dehumidifying the airflow
  • the condenser 4 serves as a heating element for the airflow.
  • the rear cover is a single-layer plate structure. Based on factors such as manufacturing process and production cost, the plate thickness of the rear cover generally does not exceed 4 mm (millimeter, millimeter), that is to say, the rear cover belongs to the thin-walled structure. pieces.
  • the plate thickness of the rear cover In the process of airflow passing through the back cover, for the wall boundary layer of the back cover, in the boundary layer, the flow velocity decreases due to the viscous obstruction, and the flow velocity of the airflow outside the boundary layer is greater than that in the boundary layer, resulting in the boundary layer.
  • the rear cover device 7 includes an inner cover 71 and an outer cover 72 .
  • the inner cover 71 is formed with an airflow channel 71a, and it can be understood that the airflow channel 71a is located on the circulating air duct.
  • the inner cover 71 includes a first side plate 711 and a plurality of protrusions 713 protruding from the surface of the first side plate 711 , please refer to FIG. Opposite sides of one side plate 711 .
  • the outer cover 72 is disposed on the side of the inner cover 71 away from the airflow channel 71a.
  • the outer cover 72 and the inner cover 71 define a muffler cavity 7a, and each protrusion 713 is located in the muffler cavity 7a.
  • the inner cover 71 is provided with a sound absorption hole 71b communicating with the airflow channel 71a and the muffler cavity 7a , and at least part of the sound absorption hole 71b penetrates the first side plate 711 and the protrusion 713 .
  • the said at least part of the sound absorption holes 71b passing through the first side plate 711 and the protrusions 713 includes the following two cases: the first one, only a part of the sound absorption holes 71b penetrate the first side plate 711 and the protrusions 713, another part of the sound absorption holes 71b only penetrates through the first side plate 711 and does not penetrate the protrusions 713; the second type: each sound absorption hole 71b penetrates the first side plates 711 and the protrusions 713.
  • the first side plate 711 is a perforated thin plate, which forms a perforated plate sound absorption structure with the sound-absorbing cavity 7a at the back, and the air in the sound absorption hole 71b rubs against the hole wall due to resonance. Further, the sound energy is lost, and the noise radiated by the rear cover device 7 is reduced.
  • the protrusions 713 in the embodiment of the present application can increase the thickness of the air column in the sound absorption hole 71b, that is, increase the flow path of the air flow in the sound absorption hole 71b , to improve the sound absorption effect of low frequency component noise.
  • the specific shape of the protrusion 713 is not limited, for example, a hollow cylinder shape, a hollow frustum shape, a hollow cuboid shape, and the like.
  • the outer contour of the protrusion 713 may be a regular shape or an irregular shape.
  • the protruding thickness d1 of the protrusions 713 on the first side plate 711 is 2 mm ⁇ 5 mm, for example, 2 mm, 2.4 mm, 3 mm, 3.5 mm, 4 mm, 4.6 mm, 5 mm, and the like.
  • the protruding thickness of the protrusions 713 will not excessively increase the size of the rear cover device 7 along the front-rear direction of the laundry treatment apparatus.
  • the hole depth d3 of the sound absorption hole 71b is 4mm-9mm, for example, 4mm, 4.5mm, 5mm, 5.4mm, 6mm, 6.6mm, 7mm, 7.3mm, 7.8mm, 8mm, 8.5mm, 9mm, etc.
  • the sound absorption hole 71b of this embodiment can control the thickness of the air column of the sound absorption hole 71b to an appropriate range under the condition of satisfying noise reduction, so that the airflow loses a large amount of sound energy in the sound absorption hole 71b.
  • the airflow channel 71a includes an impeller installation area 71a' and an air supply area 71a", and the air supply area 71a" is located along the impeller installation area 71a' Downstream in the flow direction of the airflow, the airflow passage 71a takes in the air from the opening of the impeller mounting area 71a' and supplies the air from the opening of the air supply area 71a".
  • the rear side wall 11 of the box body 1 closes the opening of the inner cover 71, and the air flow enters the impeller of the airflow channel 71a from the air outlet 1a below the rear side wall 11 of the box body 1
  • the airflow flows upward along the airflow channel 71a, and enters the box body 1 from the air inlet 1b above the rear side wall 11 of the box body 1, and then enters the laundry treatment chamber 2a.
  • the specific structural form of the inner cover 71 is not limited.
  • the inner cover 71 includes a first enclosure plate 712 connected to the first side plate 711.
  • the first enclosure plate 712 is along the first side plate.
  • the edge of 711 extends, and the first enclosure plate 712 is located on the side of the first side panel 711 away from the second side panel 721 , that is, the first enclosure panel 712 is located on the side of the first side panel 711 facing the box 1 .
  • the first side plate 711 and the first enclosure plate 712 define an airflow channel 71a.
  • the part of the first enclosure plate 712 close to the air outlet position of the impeller 6 forms a volute, that is to say, the first enclosure plate 712 and the first side plate 711 corresponding to the impeller installation area 71a' form a volute, The volute cooperates with the impeller 6 to form the structure of a centrifugal fan.
  • a first flange 7121 is formed at one end of the first enclosure plate 712 away from the first side plate 711 .
  • the first flange 7121 is attached to the rear side wall 11 of the box body 1 .
  • the first flange 7121 can increase the contact area between the inner cover 71 and the rear side wall 11 of the box body 1 , and improve the bonding reliability of the inner cover 71 and the rear side wall 11 .
  • the inner cover 71 includes a plurality of mounting ears 714 disposed on the first flange 7121, and the mounting ears 714 are provided with first connection holes.
  • the inner cover 71 is attached to the rear side wall 11 , and the screws pass through the first connecting hole and screw into the rear side wall 11 , and then the inner cover 71 can be installed on the rear side wall 11 of the box 1 .
  • the inner cover 71 is subjected to a relatively large airflow impact, and the mounting ears 714 can improve the connection reliability of the inner cover 71 and the rear side wall 11 of the box body 1 .
  • the inner cover 71 can be a split structure, for example, spliced together by a plurality of plates; the inner cover 71 can also be a one-piece structure, such as one-piece injection molding, or a metal sheet is formed through a cold working process.
  • the material of the inner cover 71 is not limited, and can be made of plastic material or metal material.
  • the inner cover 71 is a plastic part, that is, it is made of plastic material by injection molding, for example, ABS (Acrylonitrile Butadiene Styrene, acrylonitrile-butadiene-styrene copolymer), PP (Polypropylene, polypropylene), etc. are used.
  • the specific structure of the outer cover 72 is not limited.
  • the outer cover 72 includes a second side plate 721 , and the first side plate 711 and the second side plate 721 are stacked at intervals, that is In other words, the first side plate 711 and the second side plate 721 are arranged in a face-to-face manner, and the first side plate 711 and the second side plate 721 are spaced apart, and the muffler cavity 7a is located between the first side plate 711 and the second side plate 721 between.
  • the outer cover 72 includes a second enclosure plate 722, the second enclosure plate 722 extends along the edge of the second side plate 721, and the second enclosure plate 722 is located on the side of the second side plate 721 facing the first side plate 711, That is to say, the second enclosure plate 722 is located on the side of the second side plate 721 facing the box body 1 .
  • the second enclosure plate 722 surrounds the first enclosure plate 712.
  • the inner cover 71 is located in the space enclosed by the outer cover 72 and the rear side wall 11.
  • the side of the first side plate facing the box body 1 is provided with a second side plate, but the second enclosure plate 712 is not provided. Around, you can avoid the leakage of sound from the side and reduce the impact of noise.
  • a second flange 7221 is formed at one end of the second enclosure plate 722 away from the second side plate 721 . After the rear cover device 7 is assembled on the box body 1 , the second flange 7221 is attached to the rear side wall 11 of the box body 1 .
  • the second flange 7221 can increase the contact area between the outer cover 72 and the rear side wall 11 of the box body 1 , and improve the bonding reliability of the outer cover 72 and the rear side wall 11 .
  • the second flange 7221 is provided with a second connection hole.
  • the outer cover 72 is attached to the rear side wall 11 and the cover is arranged around the inner cover 71, the screws pass through the first connecting hole and screw into the rear side wall 11, and then the outer cover 72 can be installed on the casing 1. on the rear side wall 11.
  • the outer cover 72 can be a split structure, for example, spliced together by a plurality of plates; the outer cover 72 can also be a one-piece structure, for example, one-piece injection molding, or, using a metal sheet to form through a cold working process.
  • the material of the outer cover 72 is not limited, and can be made of plastic material or metal material.
  • the outer cover 72 is a sheet metal part, that is, made of metal material.
  • the inner cover 71 is a plastic part, and the outer cover 72 is also an integral injection-molded plastic part.
  • the inner cover 71 is a plastic part
  • the outer cover 72 is a sheet metal part.
  • the inner cover 71 is a sheet metal part
  • the outer cover 72 is also a sheet metal part.
  • the inner cover 71 is a sheet metal part
  • the outer cover 72 is a plastic part.
  • the inner cover 71 is a plastic part and the outer cover 72 is a sheet metal part
  • the inner cover 71 made of plastic material has a weaker thermal conductivity, so it has better thermal insulation performance. The loss is small, and the energy consumption of the clothes treatment equipment is reduced; the outer cover 72 made of metal material has excellent sound insulation performance, so this embodiment can take into account both the thermal insulation and sound insulation performance.
  • sound absorption holes may also be provided on the first enclosure plate 712 .
  • the distance d2 between the first side plate 711 and the second side plate 721 is 7mm ⁇ 20mm, for example, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm , 16mm, 17mm, 18mm, 19mm, 20mm.
  • the depth of the muffler cavity 7a is related to the vibration absorption frequency.
  • the distance range of this embodiment can realize that the muffler cavity 7a has an appropriate depth, and the resonant frequency can be moved to the low frequency end under the condition that the size of the rear cover device 7 is controlled within an appropriate range. .
  • the protruding thickness d1 of the protrusions 713 on the first side plate 711 is 0.1 to 0.3 times the distance d2 between the first side plate 711 and the second side plate 721 .
  • the protruding thickness of the protrusions 713 on the first side plate 711 is d1
  • the distance between the first side plate 711 and the second side plate 721 is d2
  • d1 d2*(0.1 ⁇ 0.3).
  • the first size is much smaller than the second size, taking into account the overall size of the rear cover device 7 along the front-rear direction of the clothes treating apparatus.
  • the specific shape of the sound absorption hole 71b is not limited, and may be a circle, a polygon, an ellipse, or the like.
  • the equivalent diameter of the sound absorption hole 71b is 2.5mm-10mm, for example, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm , 8.5mm, 9mm, 9.5mm, 10mm.
  • This size range is easy to process and manufacture when it has the function of sound absorption.
  • the process complexity of the inner cover 71 will be increased, resulting in a higher manufacturing cost of the rear cover device 7 .
  • the diameter of the sound absorption hole 71b is too large, the air flow in the air flow channel 71a will enter the muffler cavity 7a from the sound absorption hole 71b, resulting in a large loss of air volume in the air flow channel 71a.
  • the equivalent diameter refers to the diameter of the circular sound absorbing hole 71b having the same area as the non-circular sound absorbing hole 71b when the sound absorbing hole 71b is non-circular.
  • the porosity on the first side plate 711 is 2%-40%, eg, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, etc. .
  • the porosity in this range can be adapted to the frequency band to be absorbed by the rear cover device 7 of the embodiment of the present application.
  • the porosity is the ratio of the sum of the areas of all the sound absorption holes 71 b on the first side plate 711 to the area of the first side plate 711 .
  • the sound-absorbing cavity 7a is an air cavity, that is, no sound-absorbing material is provided in the sound-absorbing cavity 7a.
  • the rear cover device 7 includes a sound-absorbing material 73 , and the sound-absorbing material 73 is disposed in the sound-absorbing cavity 7 a .
  • the specific type of the sound absorbing material 73 is not limited, and the sound absorbing material 73 can make the sound wave passing through the sound absorbing hole 71b lose sound energy again, and further reduce the noise radiated to the environment by the rear cover device 7 .
  • the sound-absorbing material 73 covers the end of each protrusion 713 away from the first side plate 711, so as to block each Sound absorption hole 71b.
  • the blocking means that the sound absorbing material 73 forms a blocking effect on the airflow entering the sound absorbing hole 71b, and the sound absorbing material 73 may be a breathable material or an airtight material.
  • the sound absorbing material 73 includes a sound absorbing film layer 731 , and the sound absorbing film layer 731 covers each sound absorbing hole 71b.
  • Each sound-absorbing hole 71b and the sound-absorbing cavity 7a behind it form a row of empty cavity resonators.
  • the sound-absorbing film layer 731 may be a plastic film, varnished cloth, artificial leather, or the like.
  • the sound-absorbing film layer 731 has the characteristics of airtightness, softness, elasticity when being stretched, etc., and absorbs incident sound energy near the resonance frequency.
  • the sound-absorbing cavity 7a behind the sound-absorbing film layer 731 is an air cavity, that is, the sound-absorbing material 73 has only the sound-absorbing film layer 731 .
  • the sound-absorbing material 73 further includes a flexible sound-absorbing material 732 filled in the sound-absorbing cavity 7a behind the sound-absorbing film layer 731 .
  • the flexible sound absorbing material 732 should have a large number of pores and/or gaps inside, and these pores should be as small as possible and evenly distributed within the material.
  • the micropores inside the material should be interconnected, not closed. The pores are open to the outside, allowing sound waves to easily enter the pores.
  • the specific type of the flexible sound-absorbing material 732 is not limited, and exemplarily, includes one of organic fiber material, hemp cotton felt, inorganic fiber material, glass wool, rock wool, mineral wool, urea-formaldehyde foam, and urethane foam or more.
  • the sound-absorbing material 73 includes a flexible sound-absorbing material 732, and the flexible sound-absorbing material 732 is in a compressed state and blocks the sound absorption hole 71b. That is to say, the flexible sound-absorbing material 732 is in a state of being compressed and squeezed, so as to minimize the flow of air passing through the sound-absorbing hole 71b and then entering the sound-absorbing cavity 7a, thereby reducing the loss of air flow.
  • the flexible sound absorption material 732 is not easy to enter into the airflow channel 71a.
  • the fibrous flexible sound-absorbing material is a relatively fluffy material, and may be deformed into the sound-absorbing holes 71b after being compressed.
  • the fibrous flexible sound-absorbing material It is likely to enter the airflow channel, thereby affecting the air volume and possibly interfering with the impeller.
  • the first side plate 711 and the second side plate 721 squeeze the flexible sound-absorbing material 732 therebetween, that is, the sound-absorbing cavity 7a is filled with flexible Sound absorbing material 732.
  • the sound absorbing material 73 includes a partition plate 74 disposed between the first side plate 711 and the second side plate 721 , and the partition plate 74 and the first side plate 711 combine the flexible sound absorbing material 732 is squeezed between the two, and an air interlayer is formed between the partition plate 74 and the second side plate 721 .
  • the condenser 4 and the heating element may be located upstream of the airflow channel 71a along the airflow direction, or may be located downstream of the airflow channel 71a.
  • references to the terms “one embodiment,” “some embodiments,” “example,” “specific example,” or “some examples”, etc. refer to the specific features described in connection with the embodiment or example.
  • structures, materials, or features are included in at least one example or example of the embodiments of the present application.
  • schematic representations of the above terms are not necessarily directed to the same embodiment or example.
  • the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
  • those skilled in the art may combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples, without contradicting each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
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Abstract

一种后罩装置及衣物处理设备，后罩装置(7)包括内罩（71）和外罩（72）；内罩（71）形成有气流通道（71a），内罩（71）包括第一侧板(711)以及凸出于第一侧板(711)的表面的多个凸起(713)，气流通道（71a）和各凸起(713)位于第一侧板(711)的相对两侧；外罩设置于内罩（71）背离气流通道（71a）的一侧，外罩（72）和内罩（71）限定出消音腔(7a)，各凸起(713)位于消音腔(7a)内，内罩（71）设置有连通气流通道（71a）和消音腔(7a)的吸声孔(71b)，至少部分吸声孔(71b)贯穿第一侧板(711)和凸起(713)。在后罩装置(7)中，第一侧板(711)作为一个穿孔薄板，吸声孔(71b)内的空气因共振而与孔壁产生摩擦进而损失声能，降低后罩装置(7)辐射的噪音；凸起(713)能够增加吸声孔(71b)内的气柱厚度，也就是说，增加气流在吸声孔(71b)内的流动路径，提升对低频成分噪音的吸声效果。

Description

一种后罩装置及衣物处理设备
相关申请的交叉引用
本申请基于申请号为202110394536.6、申请日为2021年4月13日的中国专利申请，以及，申请号为202120745756.4、申请日为2021年4月13日的中国专利申请提出，并要求上述两个中国专利申请的优先权，上述两个中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及衣物护理技术领域，尤其涉及一种后罩装置及衣物处理设备。
背景技术
随着生活水平的提高，衣物处理设备作为干衣工具受到了越来越多的用户的青睐。
衣物处理设备在给用户带来便捷的同时，其在干衣过程中向周围环境辐射的噪音是困扰用户的一大问题。以干衣机为例，气动噪声是干衣机噪声的主要来源，其中，后罩装置向外辐射的气动噪声较大，且降噪难度大。
发明内容
有鉴于此，本申请实施例期望提供一种降噪效果较好的后罩装置及衣物处理设备。
本申请实施例提供一种后罩装置，用于衣物处理设备，包括：
内罩，所述内罩形成有气流通道，所述内罩包括第一侧板以及凸出于所述第一侧板的表面的多个凸起，所述气流通道和各所述凸起位于所述第 一侧板的相对两侧；
外罩，所述外罩设置于所述内罩背离所述气流通道的一侧，所述外罩和所述内罩限定出消音腔，各所述凸起位于所述消音腔内，所述内罩设置有连通所述气流通道和所述消音腔的吸声孔，至少部分所述吸声孔贯穿所述第一侧板和所述凸起。
一些实施方案中，所述凸起在所述第一侧板上的凸出厚度为2mm～5mm。
一些实施方案中，贯穿所述第一侧板和所述凸起的所述吸声孔的孔深为4mm-9mm。
一些实施方案中，所述吸声孔的等效直径为2.5mm-10mm。
一些实施方案中，所述外罩为金属件；和/或，所述内罩为塑料件。
一些实施方案中，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述凸起在所述第一侧板上的凸出厚度为所述第一侧板和所述第二侧板之间的距离的0.1倍～0.3倍。
一些实施方案中，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述第一侧板和所述第二侧板之间的距离为7mm～20mm。
一些实施方案中，所述后罩装置包括吸声材料，所述吸声材料设置于所述消音腔内。
一些实施方案中，每个所述吸声孔均贯穿所述第一侧板和所述凸起，所述吸声材料包括吸声膜层，所述吸声膜层覆盖各所述凸起远离所述第一侧板的一端，以封堵各所述吸声孔。
一些实施方案中，每个所述吸声孔均贯穿所述第一侧板和所述凸起，所述吸声材料包括柔性吸声材料，所述柔性吸声材料处于压缩状态且封堵各所述吸声孔。
一些实施方案中，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述第一侧板和所述第二侧板将所述柔性吸声材料挤压在两者之间。
一些实施方案中，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述后罩装置包括设置于所述第一侧板和所述第二侧板之间的隔板，所述隔板和所述第一侧板将所述柔性吸声材料挤压在两者之间，所述隔板和所述第二侧板之间形成空气夹层。
一些实施方案中，所述内罩背离所述外罩的一侧敞开，所述气流通道包括叶轮安装区以及送风区，所述送风区位于所述叶轮安装区沿气流流动方向的下游，所述气流通道从所述叶轮安装区的敞开处进风且从所述送风区的敞开处送风。
本申请实施例提供一种衣物处理设备，所述衣物处理设备具有循环风道，所述衣物处理设备包括箱体、设置于所述箱体内的筒部装、以及本申请任一实施例的后罩装置，所述筒部装具有衣物处理腔，所述气流通道和所述衣物处理腔均位于所述循环风道上。
一些实施方案中，所述箱体的后侧壁设置有出风口和进风口；所述后罩装置设置于所述箱体的外部且位于所述箱体的后侧壁的后侧，所述气流通道连通所述出风口和所述进风口。
一些实施方案中，所述衣物处理设备包括底座、蒸发器、冷凝器以及风轮，所述风轮设置于所述气流通道中，所述箱体罩设于所述底座的上方，所述蒸发器和所述冷凝器设置于所述底座上且位于所述循环风道上，来自所述衣物处理腔的气流依次流经所述蒸发器、冷凝器后进入所述气流通道中。
本申请实施例的后罩装置，第一侧板作为一个穿孔薄板，其与背后的消音腔形成一个穿孔板吸声结构，吸声孔内的空气因共振而与孔壁产生摩 擦进而损失声能，降低后罩装置辐射的噪音。此外，在内罩的壁厚不变的情况下，本申请实施例的凸起能够增加吸声孔内的气柱厚度，也就是说，增加气流在吸声孔内的流动路径，提升对低频成分噪音的吸声效果。
附图说明
图1为本申请一实施例的衣物处理设备的简化示意图，其中，箭头示意气流流动路径；
图2为本申请一实施例的后罩装置与箱体的后侧壁的配合示意图；
图3为图2的后视图；
图4为图2所示结构另一视角的爆炸示意图；
图5为图4所示结构另一视角的示意图；
图6为本申请一实施例的后罩装置的结构示意图；
图7为图6中A处的局部放大示意图；
图8为图6所示结构另一视角的示意图；
图9为本申请第一实施例的后罩装置的简化剖视图；
图10为图9中B处的局部放大示意图；
图11为本申请第二实施例的后罩装置的简化剖视图的局部示意图，其中，剖切位置以及局部展示位置与图10相同；
图12为本申请第三实施例的后罩装置的简化剖视图的局部示意图，其中，剖切位置以及局部展示位置与图10相同；
图13为本申请第四实施例的后罩装置的简化剖视图的局部示意图，其中，剖切位置以及局部展示位置与图10相同；
图14为本申请第二实施例的后罩装置的简化剖视图的局部示意图，其中，剖切位置以及局部展示位置与图10相同。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例用于说明本申请，但不能用来限制本申请的范围。
在本申请实施例的描述中，需要说明的是，术语“前”、“后”、上”、“下”等指示的方位或位置关系为基于附图1所示的方位或位置关系，仅是为了便于描述本申请实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
本申请实施例提供一种后罩装置7，用于衣物处理设备，以引导衣物处理设备的循环气流的流动。
本申请实施例提供一种衣物处理设备，衣物处理设备具有循环风道。,请参阅图1，衣物处理设备包括箱体1、设置于箱体1内的筒部装2、以及本申请任一实施例的后罩装置7。
请继续参阅图1，筒部装2具有衣物处理腔2a，循环风道与衣物处理腔2a连通，气流通道71a位于循环风道上，也就是说，循环风道中的气流会流经后罩装置7的内部和衣物处理腔2a。
衣物处理设备的具体类型不限，例如，可以是干衣机、洗干一体机等。
示例性地，在衣物处理设备为洗干一体机的实施例中，筒部装2包括内筒和外桶，内筒转动地设置于外桶内。
在衣物处理设备为干衣机的实施例中，筒部装2只配置内筒，而不配置外桶，也就是说，该实施例中，衣物处理设备只有一个筒。
需要说明的是，后罩装置7可以设置在箱体1内，也可以设置在箱体1的外部。
示例性地，在衣物处理设备为洗干一体机的实施例中，后罩装置7设 置在箱体1内，也就是说，后罩装置7隐藏在箱体1内。
示例性地，在衣物处理设备为干衣机的实施例中，后罩装置7设置于箱体1的外部且位于箱体1的后侧壁11的后侧。具体地，请参阅图3至图5，箱体1的后侧壁11设置有出风口1a和进风口1b，气流通道71a连通出风口1a和进风口1b。该实施例中，后罩装置7裸露在衣物处理设备的外侧，后罩装置7产生的噪音直接向周围环境辐射，因此，后罩装置7的降噪处理显得格外重要。
需要说明的是，衣物处理设备在位于衣物处理腔2a之外的循环风道上配置有用于降温除湿的冷凝装置、用于对除湿后的气体进行加热的加热件、以及风轮6，风轮6用于使循环风道中的气流形成定向流动。
衣物处理设备的干衣过程和原理如：干燥热气流从循环风道的下游进入衣物处理腔2a内，在衣物处理腔2a中，干燥热气流流经湿衣物表面，与湿衣物进行热湿交换，吸收衣物中的水分，变为湿热气流，湿热气流进入循环风道的上游，在循环风道中的冷凝装置冷凝除湿后形成低温干燥气流，低温干燥气流经加热件加热后形成干燥热气流，干燥热气流再次进入衣物处理腔2a，如此循环运行，实现衣物的连续高效干燥。
示例性地，一些实施例中，衣物处理设备包括底座5、蒸发器3以及冷凝器4，箱体1罩设于底座5的上方，蒸发器3和冷凝器4设置于底座5上且位于循环风道上，蒸发器3和冷凝器4均位于循环风道上，且蒸发器3位于冷凝器4沿气流流动方向的上游，来自衣物处理腔2a的气流依次流经蒸发器3和冷凝器4，随后进入气流通道71a中。其中，蒸发器3和冷凝器4作为热泵系统的一部分，也就是说，该实施例的衣物处理设备，采用热泵技术对气流冷凝除湿和加热。
蒸发器3作为对气流进行降温除湿的冷凝装置，冷凝器4作为对气流加热件。
需要说明的是，相关技术中，后罩为单层板结构，基于制造工艺、生产成本等因素，后罩的板厚一般不超过4mm(millimeter，毫米)，也就是说，后罩属于薄壁件。气流流经后罩的过程中，对于后罩的壁面边界层，在边界层内，流动由于受粘性阻滞而流速减小，边界层外的气流流动速度大于边界层内的流动速度，导致边界层内外之间产生压力脉动，冲击后罩，产生偶极子噪声；此外，在叶轮安装在后罩内的实施例中，叶轮的叶片周期性切割空气产生旋转噪音，同时被加速的空气不断脉动冲击后罩的蜗舌处，产生偶极子。因此，相关技术中的后罩的壁面为一块面积很大的噪声辐射面，
请参阅图6和图8，后罩装置7包括内罩71和外罩72。内罩71形成有气流通道71a，可以理解的是，气流通道71a位于循环风道上。
请参阅图6和图7，内罩71包括第一侧板711以及凸出于第一侧板711的表面的多个凸起713，请参阅图9，气流通道71a和各凸起713位于第一侧板711的相对两侧。
请继续参阅图9，外罩72设置于内罩71背离气流通道71a的一侧。外罩72和内罩71限定出消音腔7a，各凸起713位于消音腔7a内。请参阅图10至图14，内罩71设置有连通气流通道71a和消音腔7a的吸声孔71b，至少部分吸声孔71b贯穿第一侧板711和凸起713。
需要说明的是，所述的至少部分吸声孔71b贯穿第一侧板711和凸起713包括以下两种情况：第一种，只有一部分的吸声孔71b贯穿第一侧板711和凸起713，另一部分吸声孔71b只贯穿第一侧板711，而不贯穿凸起713；第二种：每个吸声孔71b均贯穿第一侧板711和凸起713。
本申请实施例的后罩装置7，第一侧板711作为一个穿孔薄板，其与背后的消音腔7a形成一个穿孔板吸声结构，吸声孔71b内的空气因共振而与孔壁产生摩擦进而损失声能，降低后罩装置7辐射的噪音。此外，在内罩 71的壁厚不变的情况下，本申请实施例的凸起713能够增加吸声孔71b内的气柱厚度，也就是说，增加气流在吸声孔71b内的流动路径，提升对低频成分噪音的吸声效果。
凸起713的具体形状不限，例如，空心圆柱体状，空心锥台状、空心长方体状等。
可以理解的是，凸起713的外轮廓可以是规则的形状，也可以是不规则的形状。
一些实施例中，请参阅图10，凸起713在第一侧板711上的凸出厚度d1为2mm～5mm，例如，2mm、2.4mm、3mm、3.5mm、4mm、4.6mm、5mm等。该实施例中，在具有降噪功能的情况下，凸起713的凸出厚度不会过度增大后罩装置7沿衣物处理设备前后方向的尺寸。
一些实施例中，请参阅图10，对于穿过第一侧板711和凸起713的吸声孔71b，吸声孔71b的孔深d3为4mm-9mm，例如，4mm、4.5mm、5mm、5.4mm、6mm、6.6mm、7mm、7.3mm、7.8mm、8mm、8.5mm、9mm等。该实施例的吸声孔71b，在满足降噪的情况下，能够使得吸声孔71b的气柱厚度控制在合适的范围，使得气流在吸声孔71b内损失较大的声能。
请参阅图5、图8以及图9，内罩71背离外罩72的一侧敞开，气流通道71a包括叶轮安装区71a′以及送风区71a″，送风区71a″位于叶轮安装区71a′沿气流流动方向的下游，气流通道71a从叶轮安装区71a′的敞开处进风且从送风区71a″的敞开处送风。
,请参阅图2、图4以及图5，箱体1的后侧壁11上的出风口1a对准叶轮安装区71a′，箱体1的后侧壁11上的进风口1b对转送风区71a″。
将后罩装置7装配在箱体1后，箱体1的后侧壁11封闭内罩71的敞开处，气流从箱体1的后侧壁11的下方的出风口1a进入气流通道71a的叶轮安装区71a′，气流沿气流通道71a向上流动，并从箱体1的后侧壁11 的上方的进风口1b进入箱体1内，进而进入衣物处理腔2a中。
内罩71的具体结构形式不限，示例性地，请参阅图6和图8，内罩71包括与第一侧板711连接的第一围板712，第一围板712沿第一侧板711的边缘延伸，且第一围板712位于第一侧板711背离第二侧板721的一侧，也就是说，第一围板712位于第一侧板711朝向箱体1的一侧。第一侧板711和第一围板712限定出气流通道71a。
需要说明的是，第一围板712的靠近叶轮6出风位置的部位形成蜗舌，也就是说，叶轮安装区71a′对应的第一围板712和第一侧板711形成一个蜗壳，蜗壳与叶轮6配合成离心风机的结构形式。
示例性地，请参阅图6和图7，第一围板712远离第一侧板711的一端形成有第一翻边7121。后罩装置7装配在箱体1上后，第一翻边7121与箱体1的后侧壁11贴合。第一翻边7121能够增大内罩71与箱体1的后侧壁11的接触面积，提升内罩71与后侧壁11的贴合可靠性。
示例性地，请参阅图6和图7，内罩71包括设置在第一翻边7121上的多个安装耳714，安装耳714设置有第一连接孔。装配时，将内罩71贴在后侧壁11上，螺钉穿过第一连接孔并拧入后侧壁11中，即可将内罩71安装在箱体1的后侧壁11上。
后罩装置7在工作过程中，内罩71承受较大的气流冲击，安装耳714能够提升内罩71与箱体1的后侧壁11的连接可靠性。
内罩71可以是分体式结构，例如，由多块板材拼接在一起；内罩71也可以是一体成型结构，例如，一体注塑成型，或者，采用金属薄板通过冷加工工艺成型。
内罩71的材质不限，可以采用塑料材质，也可以采用金属材质。示例性地，内罩71为塑料件，即采用塑料材质注塑而成，例如，采用ABS(Acrylonitrile Butadiene Styrene，丙烯腈-丁二烯-苯乙烯共聚物)、 PP(Polypropylene，聚丙烯)等。
外罩72的具体结构不限，示例性地，请参阅图6、图8以及图9，外罩72包括第二侧板721，第一侧板711和第二侧板721间隔地层叠设置，也就是说，第一侧板711和第二侧板721采用面对面的方式布置，且第一侧板711和第二侧板721间隔设置，消音腔7a位于第一侧板711和第二侧板721之间。
示例性地，外罩72包括第二围板722，第二围板722沿第二侧板721的边缘延伸，且第二围板722位于第二侧板721朝向第一侧板711的一侧，也就是说，第二围板722位于第二侧板721朝向箱体1的一侧。第二围板722环绕在第一围板712的周围，当后罩装置7装配在箱体1的后侧壁11上后，内罩71位于外罩72和后侧壁11共同围设的空间内。相关技术中，第一侧板的朝向箱体1的一侧设置有第二侧板，但不设置第二围板712，本申请通过设置第二围板722且环绕在第一围板712的周围，可以从侧面避免声音的外漏，减小噪音影响。
一些实施例中，请参阅图8，第二围板722远离第二侧板721的一端形成有第二翻边7221。后罩装置7装配在箱体1上后，第二翻边7221与箱体1的后侧壁11贴合。第二翻边7221能够增大外罩72与箱体1的后侧壁11的接触面积，提升外罩72与后侧壁11的贴合可靠性。
一些实施例中，第二翻边7221设置有第二连接孔。装配时，将外罩72贴在后侧壁11上且罩设在内罩71的周围，螺钉穿过第一连接孔并拧入后侧壁11中，即可将外罩72安装在箱体1的后侧壁11上。
外罩72可以是分体式结构，例如，由多块板材拼接在一起；外罩72也可以是一体成型结构，例如，一体注塑成型，或者，采用金属薄板通过冷加工工艺成型。
外罩72的材质不限，可以采用塑料材质，也可以采用金属材质。示例 性地，外罩72为钣金件，即采用金属材质制成。
可以理解的是，一些实施例中，内罩71为塑料件，外罩72也为一体注塑成型的塑料件。另一些实施例中，内罩71为塑料件，外罩72为钣金件。再一些实施例中，内罩71为钣金件，外罩72也为钣金件。其他一些实施例中，内罩71为钣金件，外罩72为塑料件。
在内罩71为塑料件且外罩72为钣金件的实施例中，采用塑料材质的内罩71的热传导能力较弱，因此具有较好的保温性能，气流流经气流通道71a过程中的热量损失较小，降低衣物处理设备的能耗；采用金属材质制成的外罩72具有优良的隔声性能，因此，该实施例能够兼顾保温和隔声性能。
需要说明的是，一些实施例中，第一围板712上也可以设置吸声孔。
一些实施例中，请参阅图10，第一侧板711和第二侧板721之间的距离d2为7mm～20mm，例如，7mm、8mm、9mm、10mm、11mm、12mm、13mm、14mm、15mm、16mm、17mm、18mm、19mm、20mm。消音腔7a的深度与吸振频率有关，该实施例的距离范围，能够实现消音腔7a具有适当的深度，在将后罩装置7的尺寸控制在合适范围的情况下，使得共振频率向低频端移动。
一些实施例中，请继续参阅图10，凸起713在第一侧板711上的凸出厚度d1为第一侧板711和第二侧板721之间的距离d2的0.1倍～0.3倍。例如，0.1、0.12、0.15、0.18、0.2、0.23、0.25、0.25、0.3等。具体地，凸起713在第一侧板711上的凸出厚度为d1，第一侧板711和第二侧板721之间的距离为d2，d1＝d2*(0.1～0.3)。该实施例中，第一尺寸比第二尺寸小得多，兼顾后罩装置7沿衣物处理设备的前后方向的整体尺寸。
吸声孔71b的具体形状不限，可以是圆形、多边形、椭圆形等。
一些实施例中，吸声孔71b的等效直径为2.5mm-10mm，例如，2.5mm、3mm、3.5mm、4mm、4.5mm、5mm、5.5mm、6mm、6.5mm、7mm、7.5mm、 8mm、8.5mm、9mm、9.5mm、10mm。该尺寸范围，在具有吸声功能的情况下，便于加工制造。
需要说明的是，如果吸声孔71b的孔径过小，会增大内罩71的工艺复杂度，导致后罩装置7的制造成本较高。如果吸声孔71b的孔径过大，气流通道71a中的气流会从吸声孔71b进入消音腔7a，导致气流通道71a的风量损失较大。
所述的等效直径指的是，当吸声孔71b为非圆形时，与该非圆形的吸声孔71b的面积相同的圆形吸声孔71b的直径。
一些实施例中，第一侧板711上的孔隙率为2％-40％，例如，2％、5％、10％、15％、20％、25％、30％、35％、40％等。该范围的孔隙率能够适合本申请实施例的后罩装置7的所要吸声的频带。
其中，孔隙率为第一侧板711上所有吸声孔71b的面积之和与第一侧板711的面积之比。
一些实施例中，请参阅图9和图10，消音腔7a为空气腔，也就是说，消音腔7a中不设置任何吸声材料。
另一些实施例中，请参阅图11至图14，后罩装置7包括吸声材料73，吸声材料73设置于消音腔7a内。吸声材料73的具体类型不限，吸声材料73能够使得穿过吸声孔71b的声波再次损失声能，进一步降低后罩装置7向环境辐射的噪音。
示例性地，在每个吸声孔71b均穿过第一侧板711和凸起713的实施例中，吸声材料73覆盖各凸起713远离第一侧板711的一端，以封堵各吸声孔71b。需要说明的是，所述的封堵指的是，吸声材料73对进入吸声孔71b的气流形成阻挡作用，吸声材料73可以是透气性的材料，也可以是不透气的材料。
一些实施例中，请参阅图11和图12，吸声材料73包括吸声膜层731， 吸声膜层731覆盖各吸声孔71b。每个吸声孔71b以及其背后的消音腔7a形成一排排空腔共振器。吸声膜层731可以是塑料膜、漆布、人造革等。吸声膜层731具有不透气、柔软、受张拉时有弹性等特性，吸收共振频率附近的入射声能。
一些实施例中，请参阅图11，吸声膜层731背后的消音腔7a为空气腔，即吸声材料73只有吸声膜层731。
另一些实施例中，请参阅图12，吸声材料73还包括填充在吸声膜层731背后的消音腔7a中的柔性吸声材料732。柔性吸声材料732内部应有大量的微孔和/或间隙，而且这些微孔应尽可能细小并在材料内部是均匀分布的。材料内部的微孔应该是互相贯通的，而不是密闭的。微孔向外敞开，使声波易于进入微孔内。
柔性吸声材料732的具体类型不限，示例性地，包括有机纤维材料、麻棉毛毡、无机纤维材料、玻璃棉、岩棉、矿棉、脲醛泡沫塑料、氨基甲酸脂泡沫塑料中的一种或多种。
一些实施例中，请参阅图13和图14，每个吸声孔71b均贯穿第一侧板711和凸起713的实施例中，吸声材料73包括柔性吸声材料732，柔性吸声材料732处于压缩状态且封堵吸声孔71b。也就是说，柔性吸声材料732处于被压缩被挤压的状态，以尽量减少气流穿过吸声孔71b进而进入消音腔7a中的流量，减少气流流量损失。
该实施例中，在保证内罩71的板厚与相关技术中的板厚相同的情况下，由于凸起713增大了吸声孔71b的孔深，使得柔性吸声材料732，尤其是纤维状的柔性吸声材料732，例如吸音棉，不易进入到气流通道71a中。
具体地，对于纤维状的柔性吸声材料是一种比较蓬松的材质，受压缩后可能会变形进入吸声孔71b中，相关技术中，如果没有设置凸起，则纤维状的柔性吸声材料很可能进入气流通道中，从而影响风量，并可能与叶 轮干涉。
需要说明的是，对柔性吸声材料732的压缩、挤压方式不限。
示例性地，一些实施例中，请参阅图14，第一侧板711和第二侧板721将柔性吸声材料732挤压在两者之间，也就是说，消音腔7a内充满了柔性吸声材料732。
另一实施例中，请参阅图3，吸声材料73包括设置于第一侧板711和第二侧板721之间的隔板74，隔板74和第一侧板711将柔性吸声材料732挤压在两者之间，隔板74和第二侧板721之间形成空气夹层。
需要说明的是，冷凝器4、加热件可以位于气流通道71a沿气流流动方向的上游，也可以位于气流通道71a的下游。
在本申请的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请实施例的至少一个实施例或示例中。在本申请中，对上述术语的示意性表述不是必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本申请中描述的不同实施例或示例以及不同实施例或示例的特征进行结合。
以上所述仅为本申请的较佳实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (16)

  1. 一种后罩装置，用于衣物处理设备，包括：
    内罩，所述内罩形成有气流通道，所述内罩包括第一侧板以及凸出于所述第一侧板的表面的多个凸起，所述气流通道和各所述凸起位于所述第一侧板的相对两侧；
    外罩，所述外罩设置于所述内罩背离所述气流通道的一侧，所述外罩和所述内罩限定出消音腔，各所述凸起位于所述消音腔内，所述内罩设置有连通所述气流通道和所述消音腔的吸声孔，至少部分所述吸声孔贯穿所述第一侧板和所述凸起。
  2. 根据权利要求1所述的后罩装置，所述凸起在所述第一侧板上的凸出厚度为2mm～5mm。
  3. 根据权利要求1所述的后罩装置，贯穿所述第一侧板和所述凸起的所述吸声孔的孔深为4mm-9mm。
  4. 根据权利要求1所述的后罩装置，所述吸声孔的等效直径为2.5mm-10mm。
  5. 根据权利要求1所述的后罩装置，所述外罩为金属件；和/或，所述内罩为塑料件。
  6. 根据权利要求1所述的后罩装置，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述凸起在所述第一侧板上的凸出厚度为所述第一侧板和所述第二侧板之间的距离的0.1倍～0.3倍。
  7. 根据权利要求1所述的后罩装置，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述第一侧板和所述第二侧板之间的距离为7mm～20mm。
  8. 根据权利要求1-5任一项所述的后罩装置，所述后罩装置包括吸声材 料，所述吸声材料设置于所述消音腔内。
  9. 根据权利要求8所述的后罩装置，每个所述吸声孔均贯穿所述第一侧板和所述凸起，所述吸声材料包括吸声膜层，所述吸声膜层覆盖各所述凸起远离所述第一侧板的一端，以封堵各所述吸声孔。
  10. 根据权利要求8所述的后罩装置，每个所述吸声孔均贯穿所述第一侧板和所述凸起，所述吸声材料包括柔性吸声材料，所述柔性吸声材料处于压缩状态且封堵各所述吸声孔。
  11. 根据权利要求10所述的后罩装置，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置，所述第一侧板和所述第二侧板将所述柔性吸声材料挤压在两者之间。
  12. 根据权利要求10所述的后罩装置，所述外罩包括第二侧板，所述第一侧板和所述第二侧板间隔地层叠设置；所述后罩装置包括设置于所述第一侧板和所述第二侧板之间的隔板，所述隔板和所述第一侧板将所述柔性吸声材料挤压在两者之间，所述隔板和所述第二侧板之间形成空气夹层。
  13. 根据权利要求1-7任一项所述的后罩装置，所述内罩背离所述外罩的一侧敞开，所述气流通道包括叶轮安装区以及送风区，所述送风区位于所述叶轮安装区沿气流流动方向的下游，所述气流通道从所述叶轮安装区的敞开处进风且从所述送风区的敞开处送风。
  14. 一种衣物处理设备，所述衣物处理设备具有循环风道，所述衣物处理设备包括箱体、设置于所述箱体内的筒部装、以及权利要求1-13任一项所述的后罩装置，所述筒部装具有衣物处理腔，所述气流通道和所述衣物处理腔均位于所述循环风道上。
  15. 根据权利要求14所述的衣物处理设备，所述箱体的后侧壁设置有出风口和进风口；所述后罩装置设置于所述箱体的外部且位于所述箱体的后侧壁的后侧，所述气流通道连通所述出风口和所述进风口。
  16. 根据权利要求14所述的衣物处理设备，所述衣物处理设备包括底座、蒸发器、冷凝器以及风轮，所述风轮设置于所述气流通道中，所述箱体罩设于所述底座的上方，所述蒸发器和所述冷凝器设置于所述底座上且位于所述循环风道上，来自所述衣物处理腔的气流依次流经所述蒸发器、冷凝器后进入所述气流通道中。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116005423A (zh) * 2022-12-12 2023-04-25 广东美的白色家电技术创新中心有限公司 干衣设备
CN116163126A (zh) * 2022-12-12 2023-05-26 广东美的白色家电技术创新中心有限公司 干衣设备

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918149A (en) * 1931-05-08 1933-07-11 Burgess Lab Inc C F Sound transmitting and sound absorbing construction
CN2051253U (zh) * 1989-06-14 1990-01-17 马鞍山钢铁公司 宽频谱强声级的噪声治理装置
US20090038883A1 (en) * 2005-06-14 2009-02-12 Kim Young-Ok Sound-absorbing panel
CN101666029A (zh) * 2008-09-03 2010-03-10 博西华电器（江苏）有限公司 家用电器
CN206256296U (zh) * 2016-10-28 2017-06-16 无锡飞翎电子有限公司 衣物处理装置
CN108866967A (zh) * 2018-08-02 2018-11-23 海信（山东）冰箱有限公司 一种用于洗衣机的降噪结构
CN109595639A (zh) * 2017-09-30 2019-04-09 宁波方太厨具有限公司 一种近吸式吸油烟机
CN110894669A (zh) * 2019-11-21 2020-03-20 珠海格力电器股份有限公司 一种洗衣机烘干风道的消音结构、洗衣机
CN210369396U (zh) * 2019-07-24 2020-04-21 广东美穗建材科技有限公司 吸声板及吸声隔墙系统
CN112309358A (zh) * 2019-11-19 2021-02-02 无锡小天鹅电器有限公司 消音装置和衣物处理设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070004908A (ko) * 2004-04-30 2007-01-09 가부시키가이샤 고베 세이코쇼 다공질 흡음 구조체
JP2016104111A (ja) * 2014-11-19 2016-06-09 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 乾燥機
CN208123094U (zh) * 2018-03-26 2018-11-20 无锡小天鹅股份有限公司 风机组件和具有干衣功能的衣物处理装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918149A (en) * 1931-05-08 1933-07-11 Burgess Lab Inc C F Sound transmitting and sound absorbing construction
CN2051253U (zh) * 1989-06-14 1990-01-17 马鞍山钢铁公司 宽频谱强声级的噪声治理装置
US20090038883A1 (en) * 2005-06-14 2009-02-12 Kim Young-Ok Sound-absorbing panel
CN101666029A (zh) * 2008-09-03 2010-03-10 博西华电器（江苏）有限公司 家用电器
CN206256296U (zh) * 2016-10-28 2017-06-16 无锡飞翎电子有限公司 衣物处理装置
CN109595639A (zh) * 2017-09-30 2019-04-09 宁波方太厨具有限公司 一种近吸式吸油烟机
CN108866967A (zh) * 2018-08-02 2018-11-23 海信（山东）冰箱有限公司 一种用于洗衣机的降噪结构
CN210369396U (zh) * 2019-07-24 2020-04-21 广东美穗建材科技有限公司 吸声板及吸声隔墙系统
CN112309358A (zh) * 2019-11-19 2021-02-02 无锡小天鹅电器有限公司 消音装置和衣物处理设备
CN110894669A (zh) * 2019-11-21 2020-03-20 珠海格力电器股份有限公司 一种洗衣机烘干风道的消音结构、洗衣机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4324976A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116005423A (zh) * 2022-12-12 2023-04-25 广东美的白色家电技术创新中心有限公司 干衣设备
CN116163126A (zh) * 2022-12-12 2023-05-26 广东美的白色家电技术创新中心有限公司 干衣设备
CN116163126B (zh) * 2022-12-12 2025-11-07 广东美的白色家电技术创新中心有限公司 干衣设备

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