WO2022257508A1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
WO2022257508A1
WO2022257508A1 PCT/CN2022/078416 CN2022078416W WO2022257508A1 WO 2022257508 A1 WO2022257508 A1 WO 2022257508A1 CN 2022078416 W CN2022078416 W CN 2022078416W WO 2022257508 A1 WO2022257508 A1 WO 2022257508A1
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WO
WIPO (PCT)
Prior art keywords
exciter
housing
shell
refrigerator
refrigerator according
Prior art date
Application number
PCT/CN2022/078416
Other languages
English (en)
Chinese (zh)
Inventor
王海盈
周辉
李奎宝
高青梅
Original Assignee
海信视像科技股份有限公司
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
Priority claimed from CN202110657398.6A external-priority patent/CN115474140A/zh
Priority claimed from CN202110656586.7A external-priority patent/CN115468355B/zh
Priority claimed from CN202121316971.9U external-priority patent/CN214756783U/zh
Priority claimed from CN202110656587.1A external-priority patent/CN115474134A/zh
Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Priority to CN202280012959.XA priority Critical patent/CN116783434A/zh
Publication of WO2022257508A1 publication Critical patent/WO2022257508A1/fr

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Classifications

    • 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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein

Definitions

  • the present disclosure relates to the technical field of sound generating equipment, and in particular to a refrigerator.
  • Refrigerators are household electrical appliances commonly used in people's lives, and are used to keep food or other items at a constant low temperature.
  • the refrigerator includes an insulation layer and a first casing and a second casing arranged on both sides of the insulation layer.
  • the insulation layer is used to maintain the temperature inside the refrigerator within a preset range.
  • the first casing is attached to the inner wall of the insulation layer. , so as to enclose a storage area for accommodating food, etc., and the second casing is attached to the outside of the insulation layer to form protection for the refrigerator.
  • the refrigerator also includes a display panel and a speaker, the speaker is connected to the display panel or the second casing, the second casing is provided with a through sound hole, the sound from the speaker can be transmitted through the sound hole for the user to listen to or realize the user Voice interaction with refrigerator.
  • a refrigerator includes: an exciter assembly, the exciter assembly includes at least one exciter; a casing, a storage area is arranged inside the casing; the casing includes a thermal insulation layer, a first casing and the second shell, the first shell and the second shell are respectively pasted on the inner and outer sides of the thermal insulation layer; The opening of the accommodating part is covered, the exciter is arranged in the accommodating part, and the exciter is connected with the second casing, and is used to drive the second casing to vibrate and generate sound waves.
  • the exciter drives the second housing to vibrate and produce sound. There is no need to set a sound outlet on the second housing, and the exciter is not exposed to the air.
  • the second housing has good sealing performance and good dustproof performance. Water resistance.
  • the planar sound has a larger sound pressure level and a relatively flat frequency response than the loudspeaker sound.
  • a refrigerator includes: an actuator; a box for storing items; the box includes a thermal insulation layer, a first shell and a second shell, the first shell and the The second housing is respectively located on both sides of the inner and outer sides of the thermal insulation layer; a protective chamber is formed on the side of the thermal insulation layer facing the second housing, and the second housing covers the opening of the protective chamber, The exciter is located in the protection cavity, and the exciter is connected with the second casing, and is used to drive the second casing to vibrate and generate sound waves.
  • a refrigerator includes: an exciter assembly, the exciter assembly including a first exciter and a second exciter; a box body, a storage area is arranged in the box body; the box body It includes a thermal insulation layer, a first casing and a second casing, the first casing and the second casing are attached to the inner and outer sides of the thermal insulation layer respectively; the thermal insulation layer is provided with a first depression part and a second recessed part, the first recessed part and the second recessed part are arranged at intervals, the first exciter is located in the first recessed part, and the second exciter is located in the second recessed part ; the second housing covers the opening of the first recess and the opening of the second recess respectively, and the part of the second housing corresponding to the first recess constitutes a first vibration part, the part of the second housing corresponding to the second recess constitutes a second vibrating part; the first exciter is connected with the first vibrating part,
  • a refrigerator includes: a box body, the box body includes an inner liner, a protective shell, and a heat insulating element, the heat insulating element is arranged between the inner liner and the protective shell, the The heat insulating part is provided with a recessed part, and the opening of the recessed part is closed by the protective shell; the heat transfer part, the heat transfer part is connected with the protective case; the exciter, the exciter includes a vibration Voice coil, the voice coil is connected with the heat transfer element, so as to transmit the vibration of the voice coil to the protective shell, and drive the protective shell to vibrate and produce sound, and the heat generated by the voice coil can pass through the The heat transfer element is conducted to the protective shell.
  • FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the disclosure
  • Fig. 2 is a schematic structural view of the refrigerator in Fig. 1 when the thickness of the second casing is relatively small;
  • Fig. 3 is a structural schematic diagram of the refrigerator in Fig. 1 when the thickness of the second casing is relatively large;
  • FIGS. 4-7 are schematic structural diagrams of accommodating parts according to embodiments of the present disclosure.
  • FIG. 13-14 are structural schematic diagrams when the electromagnetic exciter drives the second housing to vibrate according to an embodiment of the present disclosure
  • Fig. 15 is a schematic structural diagram of another refrigerator according to an embodiment of the present disclosure.
  • 16-23 are cross-sectional views of exciter positions of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 24 is a schematic structural diagram of part A in Fig. 17;
  • Fig. 25 is a schematic structural view of the second housing in Fig. 15;
  • Fig. 26 is a schematic structural view of part B in Fig. 23;
  • Fig. 27 is a schematic structural diagram of another refrigerator according to an embodiment of the present disclosure.
  • Fig. 28 is the frequency response curve of the sound emitted by the first exciter and the sound excited by the second exciter in Fig. 27;
  • 29-36 are structural schematic diagrams of a second recessed portion in a refrigerator according to an embodiment of the present disclosure.
  • 37-39 are system architecture diagrams of a refrigerator according to an embodiment of the present disclosure.
  • 40-41 are schematic structural diagrams of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 42 is a schematic structural view of the refrigerator according to an embodiment of the present disclosure when the first exciter and the second exciter include voice coils;
  • Fig. 43 is a schematic structural diagram of the exciter in Fig. 42;
  • Figure 44- Figure 45 is a schematic structural view of the support in Figure 43;
  • Figure 46 is a cross-sectional view of the support in Figure 44 and Figure 45;
  • Fig. 47-Fig. 48 are structural schematic diagrams when a reinforcement plate is provided on the second housing in Fig. 42;
  • Fig. 49 is a schematic diagram of the reinforcing plate structure when the honeycomb sandwich panel is set in Fig. 47;
  • Fig. 50 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 51 is a schematic diagram of the structure in which the exciter is connected to the protective case in Fig. 50;
  • Fig. 52 is a schematic structural diagram of the exciter in Fig. 51;
  • Figure 53- Figure 54 is a schematic structural view of the support in Figure 52;
  • Figure 55 is a cross-sectional view of the support in Figures 53 and 54;
  • Figure 56- Figure 57 is a structural schematic diagram when a reinforcing plate is provided on the protective shell in Figure 50;
  • Fig. 58 is a schematic diagram of the reinforcing plate structure when the honeycomb sandwich panel is set in Fig. 56;
  • Fig. 59-Fig. 60 are structural schematic diagrams when the refrigerator in Fig. 50 is provided with cooling channels.
  • the refrigerator according to the embodiment of the present disclosure is provided with an exciter, and the exciter is arranged on a side of the insulation layer close to the second casing, and the exciter can drive the second casing to vibrate and make sound when working. In this way, without destroying the integrity of the second housing, the surface vibration sound of the refrigerator is realized, the protection performance is better, and the sound pressure level of the sound is higher.
  • Fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 2 is a schematic structural view of the refrigerator in Fig. 1 when the thickness of the second casing is relatively small.
  • Fig. 3 is a schematic structural view of the refrigerator in Fig. 1 when the thickness of the second casing is relatively large.
  • a refrigerator which includes an exciter assembly
  • the exciter assembly includes at least one exciter 110; a casing 120, a storage area is provided in the casing 120; the casing 120 includes a thermal insulation layer 121.
  • the first housing 122 and the second housing 123, the first housing 122 and the second housing 123 are attached to the inner and outer sides of the insulation layer 121 respectively;
  • the housing 123 covers the opening of the accommodating portion 1211 , the exciter 110 is disposed in the accommodating portion 1211 , and the exciter 110 is connected to the second housing 123 for driving the second housing 123 to vibrate and generate sound waves.
  • a refrigerator is a refrigeration device used to keep food or other items at a constant low temperature.
  • Storage areas may include refrigerated and frozen areas.
  • the housing includes an insulation layer 121 , a first housing 122 and a second housing 123 .
  • the insulation layer 121 may be made of polyurethane foam, and the embodiment of the present disclosure does not limit the material and molding process of the insulation layer 121 .
  • the first housing 122 and the second housing 123 are respectively attached to the inner and outer sides of the insulation layer 121.
  • the first housing 122 can be made of plastic, and the material of the second housing 123 can be metal, such as stainless steel, aluminum, etc. Higher, longer service life.
  • the material of the second housing 123 can also be glass, polycarbonate, carbon fiber or other composite materials.
  • the refrigerator also includes an exciter 110 for driving the second housing 123 to vibrate and produce sound.
  • the refrigerator is generally a cube structure, and the actuator 110 can be arranged on any side of the refrigerator.
  • the housing 120 includes a body 124 and a switch door 125, the storage area is arranged on the body 124, and the switch door 125 is used to cover the storage area; the accommodating part 1211 is arranged on the body 124 and/or the switch door 125 superior.
  • the storage area includes a refrigerating area and a freezing area
  • the number of switch doors 125 corresponds to two.
  • the exciter 110 can be arranged on the body 124 or on the switch door 125 .
  • the actuators 110 can be installed on the body 124 and the switch door 125 at the same time.
  • the thermal insulation layer 121 is provided with a housing part 1211 , the opening of the housing part 1211 faces to the side of the second housing 123 , and the actuator 110 is disposed in the housing part 1211 .
  • the projection shape of the accommodating portion 1211 on the second housing 123 may be a relatively regular geometric shape such as a rectangle, a circle, an ellipse, or a triangle, or other irregular geometric shapes.
  • the recessed depth of the accommodating portion 1211 can be smaller than the thickness of the insulation layer 121, so that the side of the accommodating portion 1211 facing the first casing 122 still has a certain thickness of the insulation layer 121, so as to avoid the inside of the refrigerator.
  • the low temperature of the refrigerator is lost through the accommodating part 1211, and the insulation effect of the refrigerator is better.
  • the second housing 123 covers the opening of the housing part 1211, and the part of the second housing 123 connected to the insulation layer 121 remains in a fixed state, and the part corresponding to the opening of the housing part 1211 of the second housing 123 constitutes a vibration
  • the exciter 110 can drive the part of the second housing 123 to vibrate and produce sound.
  • the embodiment of the present disclosure does not open holes in the second housing 123, and does not destroy the integrity of the second housing 123.
  • the second housing 123 has better sealing and protection performance for the insulation layer 121, the actuator 110, etc. .
  • the surface vibration sound has a higher sound pressure level and a relatively flat frequency response, and the sound quality is better.
  • the refrigerator also includes a decoding module, an amplifier, a transducer, a controller, and a Bluetooth module or a WiFi module, wherein the Bluetooth module or the WiFi module is used to receive audio data information from a mobile phone, a computer, etc., and the decoding module decodes Stereo audio signal, the amplifier is connected with Bluetooth module or WiFi module, the stereo audio signal decoded by the decoding module can be amplified by the amplifier, and the amplified stereo audio signal can be sent to the transducer to realize the conversion of electrical signal and acoustic signal.
  • the inner wall of the accommodating portion 1211 may be relatively smooth.
  • the opening of the accommodating portion 1211 is closed by the second housing 123 , and the accommodating portion 1211 is a closed space. In this way, part of the sound emitted by the vibration of the second casing 123 will be reflected multiple times in the accommodating portion 1211 to form stray sounds.
  • FIG. 4 is a first structural schematic diagram of the accommodating portion in FIGS. 1 to 3 .
  • FIG. 5 is a second structural schematic diagram of the accommodating portion in FIGS. 1 to 3 .
  • FIG. 6 is a third schematic structural view of the accommodating portion in FIGS. 1 to 3 .
  • FIG. 7 is a fourth structural schematic diagram of the accommodating portion in FIGS. 1 to 3 .
  • a concave-convex structure is provided on the inner wall of the accommodating portion 1211 , and the concave-convex structure is used for multiple reflections of the sound waves propagating inside. In this way, the propagation of the sound wave is disturbed by the concave-convex structure, so that the sound wave is reflected multiple times in the concave-convex structure, which can consume the energy of the sound wave and achieve the effect of eliminating stray sound.
  • the accommodating portions 1211 when the shapes of the accommodating portions 1211 are different, the accommodating portions 1211 have different inner wall surfaces.
  • the inner wall surface of the accommodating portion 1211 is a spherical wall surface.
  • the accommodating portion 1211 is a cylindrical groove, the accommodating portion 1211 has a plurality of connected inner wall surfaces.
  • the accommodating portion 1211 is a cylindrical groove as an example, and the cross-sectional shape of the accommodating portion 1211 is a rectangle.
  • the accommodating portion 1211 has four side walls and a bottom wall 12111 .
  • the concavo-convex structure can be distributed on the four sidewall surfaces and the bottom wall surface 12111 at the same time, or be provided separately on the four sidewall surfaces (as shown in FIG. 4 and FIG. 5 ), or be provided separately on one of the accommodating parts 1211 on the side wall (as shown in Figure 7).
  • the concave-convex structure may be a hole-like structure formed by indentation on the inner wall of the accommodating portion 1211 , and there are multiple hole-like structures.
  • the concave-convex structure includes a plurality of protrusions 1212 , and the plurality of protrusions 1212 are arranged at intervals and protrude from the inner wall of the accommodating portion 1211 .
  • the shape of the protruding part 1212 can be a cylindrical protrusion, a cylindrical protrusion or a combination of various shapes, and the structure is simple and easy to form.
  • a plurality of protrusions 1212 are distributed on the circumferential side wall of the accommodating portion 1211 , or, please refer to FIG. 7 , a plurality of protrusions 1212 are distributed on the accommodating One of the side walls in the circumferential direction of the portion 1211.
  • the accommodating portion 1211 includes a plurality of cavities, the cavities communicate with each other, and the volumes of the cavities are different.
  • the number of cavities may be set according to a preset sound frequency range, and multiple cavities may be arranged along a certain direction or in a circular arrangement along a circumferential direction, which is not limited by the embodiments of the present disclosure.
  • the embodiment of the present disclosure is described by taking the accommodating part 1211 including two cavities as an example, and the two cavities are the first cavity 1213 and the second cavity 1214 respectively.
  • the actuator 110 may be disposed in the first cavity 1213 or the second cavity 1214 .
  • the depth of the first cavity 1213 is the same as that of the second cavity 1214, and the cavity volume of the first cavity 1213 is different from that of the second cavity 1214, It shows that the cross-sectional area of the first cavity 1213 and the cross-sectional area of the second cavity 1214 are different.
  • the first cavity 1213 and the second cavity 1214 may also have other separation methods.
  • the first cavity 1213 and the second cavity 1214 can have different resonant frequencies, and when the exciter 110 drives the second housing 123 to vibrate, the first cavity 1213 and the second cavity 1214 can excite different frequencies respectively.
  • Sound waves the resonant frequency range of sound waves is wide, and a larger sound pressure level can be obtained in a wider frequency range.
  • the center of the actuator 110 and the center of the accommodating portion 1211 are spaced apart in a direction parallel to the second casing 123 .
  • the sound emitted by the second casing 123 can have more resonant modes; A higher sound pressure level is obtained in the frequency range.
  • it can also prevent the sound emitted by the second casing 123 from generating regular standing waves and reduce sound wave distortion.
  • the location of the exciter 110 can be determined through modal analysis, which is not limited in the embodiments of the present disclosure.
  • the second shell 123 may have different thicknesses.
  • the thickness is generally 0.5mm-1mm.
  • the thickness is 2mm-4mm.
  • a reinforcing plate 130 is provided on the part of the second housing 123 corresponding to the accommodating portion 1211, the actuator 110 is connected to the reinforcing plate 130, and the damping of the reinforcing plate 130 is greater than that of the second housing 123. .
  • the thickness of the reinforcing plate 130 may be less than 3 mm, and for example, the thickness of the reinforcing plate 130 in the embodiment of the present disclosure may be 2 mm.
  • the reinforcing plate 130 may be bonded and fixed to the second housing 123 by an adhesive member.
  • the rigidity of the second casing 123 can be improved to avoid excessive deformation of the second casing 123 .
  • the damping of the second shell 123 is small and the hardness is high. In this way, the resonant sound of the second shell 123 tends to produce obvious peaks and valleys, and the sound feels sharp.
  • the damping of the portion of the second housing 123 corresponding to the accommodating portion 1211 is improved by providing the reinforcing plate 130 with relatively large damping, which can expand the frequency range of the sound emitted by the second housing 123 and improve the sense of hearing.
  • the sound quality of a sound can be measured from aspects such as volume, pitch, and timbre.
  • the sound emitted by the sandwich panel has higher amplitude and wider frequency range than the sound emitted by the steel plate and glass plate, that is to say, the sound emitted by the sandwich panel is higher than that emitted by the steel plate or glass plate Has better sound quality.
  • the exciter 110 has a magnetic component, and after the reinforcing plate 130 is provided, the distance between the exciter 110 and the second housing 123 becomes larger.
  • the material of the second housing 123 is magnetic metal such as iron, the magnetic adsorption force between the second housing 123 and the actuator 110 can be weakened, and the magnetic force between the second housing 123 and the actuator 110 can be avoided.
  • the suction force affects the vibration of the actuator 110 .
  • the reinforcing plate 130 can be set At the middle position of the opening of the accommodating portion 1211 .
  • the avoidance gap L 1 there is an avoidance gap L 1 between the edge of the reinforcing plate 130 and the edge of the opening of the accommodating portion 1211 , and the avoiding gap L 1 is provided along the circumferential direction of the reinforcing plate 130 .
  • the width of the avoidance gap L 1 may be 5mm-15mm.
  • the widths of the avoidance gaps L 1 at various positions may be the same or different.
  • the width of the avoidance gap L 1 will increase or decrease correspondingly with the concave-convex structure.
  • the width of the avoidance gap L1 in the embodiment of the present disclosure is relatively large, and the part of the second housing 123 corresponding to the avoidance gap L1 can constitute a transition area, and vibrate with the reinforcing plate 130, to prevent the second shell 123 from being broken due to a large shearing force, and the service life of the second shell 123 is relatively high.
  • the reinforcement board 130 is any one of honeycomb sandwich board, foam sandwich board, wood sandwich board and acrylic board, which is low in cost and easy to obtain.
  • the honeycomb sandwich panel can be aluminum honeycomb sandwich panel, aramid fiber honeycomb sandwich panel, etc.
  • the foam sandwich panel can be polyvinyl chloride (Polyvinyl chloride, PVC) foam sandwich panel, polymethacrylimide ( PMI) foam sandwich panels, etc.
  • wood sandwich panels can be balsa wood and other light wood.
  • the reinforcing plate 130 When the reinforcing plate 130 is a sandwich panel, it includes a core layer and protective layers attached to both sides of the core layer.
  • the material of the two outer protective layers can be glass fiber cloth, carbon fiber cloth, paper, plastic, etc.
  • the reinforcing plate 130 can increase the rigidity and strength of the second casing 123, improve the damping of the second casing and thus improve the sound quality.
  • Fig. 8 is a structural schematic diagram 1 when the exciter in Fig. 1 is an electromagnetic exciter.
  • Fig. 9 is the second structural diagram when the exciter in Fig. 1 is an electromagnetic exciter.
  • Fig. 10 is a structural schematic diagram III when the exciter in Fig. 1 is an electromagnetic exciter.
  • FIG. 1 to FIG. 3 and FIG. 8 Please refer to FIG. 10.
  • FIG. 2 FIG. 3 and FIG.
  • the plane parallel to the body 123 may also be a plane disposed at an angle with the second housing 123 , so that the accommodating portion 1211 has a larger accommodating space.
  • FIG. 9 and FIG. The vertical dimension along the second casing 123 is different, and the bottom wall surface 12111 of the accommodating portion 1211 can protrude toward the side of the second casing 123 accordingly, so that the position of the insulating layer 121 corresponding to the accommodating portion 1211 The larger the thickness, the better the thermal insulation effect of the thermal insulation layer 121.
  • the exciter 110 can be fixedly connected with the second housing 123. At this time, there is a gap between the exciter 110 and the bottom wall 12111, so as to avoid the vibration between the exciter 110 and the insulation layer 121 during the vibration of the exciter 110. In the event of a collision, the gap value can be 2mm-5mm. In some embodiments, the actuator 110 can also be fixedly connected to the insulation layer 121 .
  • the actuator 110 is any one of the electromagnetic actuator 111 , the magnetostrictive actuator and the piezoelectric actuator, which has high applicability.
  • the actuator 110 when the actuator 110 is an electromagnetic actuator 111 , the actuator 110 is connected to the second housing 123 , and the actuator 110 is spaced apart from the bottom wall 12111 of the accommodating portion 1211 . In this way, the vibrating mass of the exciter 110 itself can drive the second housing 123 to vibrate, the amplitude of the second housing 123 is relatively large, and the sound pressure level of the sound emitted by the second housing 123 is relatively high.
  • the weight of the electromagnetic actuator 111 is greater than the weight of the portion of the second housing 123 corresponding to the opening of the accommodating portion 1211 .
  • the electromagnetic exciter 111 is fixedly connected with the second housing 123 as a whole, it is equivalent to increasing the equivalent vibration mass of the second housing 123, thus helping the second housing 123 to excite low-frequency sounds, satisfying Low-frequency sound design requirements for sound-generating devices.
  • FIG. 13 is a structural schematic diagram 1 when the electromagnetic exciter in FIG. 10 drives the second housing to vibrate.
  • FIG. 14 is a second structural diagram when the electromagnetic exciter in FIG. 10 drives the second housing to vibrate.
  • Fig. 11 is a structural schematic diagram IV when the exciter in Fig. 1 is an electromagnetic exciter.
  • Fig. 12 is a schematic diagram of the fifth structure when the exciter in Fig. 1 is an electromagnetic exciter.
  • the electromagnetic actuator 111 includes a voice coil 1111 , a first magnetic member and a magnetic conduction member 1112 , and the voice coil 1111 and the magnetic conduction member 1112 are respectively fixedly connected to the second housing 123
  • the magnetically conductive part 1112 can move relative to the voice coil 1111 in the magnetic field generated by the first magnetic part, and drive the second casing 123 to vibrate and produce sound.
  • the magnetically conductive member 1112 can be a U-iron or a T-iron well known to those skilled in the art.
  • the voice coil 1111 and the magnetically conductive member 1112 can be bonded and fixed to the second housing 123 by adhesives respectively, so that the connection stability is high, and collision between the voice coil 1111 and the second housing 123 can be avoided.
  • both the voice coil 1111 and the magnetic guide 1112 are fixedly connected to the reinforcing plate 130 .
  • the voice coil 1111 will generate heat when the electromagnetic exciter 111 is working, in order to help the voice coil 1111 dissipate heat, please refer to FIG. 11 .
  • hole and a heat conduction element 1113 is arranged in the through hole, and the heat conduction element 1113 is fixedly connected with the reinforcing plate 130 and mounted on the second housing 123 .
  • the voice coil 1111 is fixedly connected with the heat conducting member 1113 .
  • the material of the heat conducting member 1113 may be metal or the like.
  • the heat generated by the voice coil 1111 can be transferred to the heat conducting element 1113 , and then transferred to the second housing 123 through the heat conducting element 1113 . And because the second housing 123 is in contact with the outside air, the second housing 123 can exchange heat with the air and cool down, so as to cool down the voice coil 1111 .
  • the material of the second housing 123 can be metal, so as to increase the heat exchange speed between the heat conducting element 1113 and the second housing 123 .
  • the length of the voice coil 1111 can also be increased, and the voice coil 1111 passes through the through hole of the reinforcing plate 130 and is fixedly connected with the second housing 123, so that , the voice coil 1111 can directly exchange heat with the second casing 123, and the heat exchange speed is relatively high.
  • the actuator 110 is a magnetostrictive actuator.
  • the fixing stability of the actuator 110 is relatively high, and by fixing the magnetostrictive actuator on the insulation layer 121, it is possible to avoid reducing the thermal insulation effect due to the excessive depth of the accommodating portion 1211 resulting in a small thickness of the thermal insulation layer 121.
  • the magnetostrictive actuator includes: a second magnetic member; a coil for generating an alternating magnetic field according to a control signal;
  • the telescopic deformation occurs along the axial direction of the coil;
  • the telescopic member is connected with the second housing 123 to drive the second housing 123 to reciprocate; wherein, the reciprocating movement direction of the second housing 123 is set at an included angle with the axial direction of the coil.
  • the coil is cylindrical, and the second magnetic part and the telescopic part can be arranged in the coil. And in order to facilitate the relative movement between the telescopic part and the coil, there is an assembly gap between the coil and the telescopic part.
  • the magnetostrictive actuator also includes an actuator housing, which is fixedly connected to the insulation layer 121 , and the coil is accommodated in the actuator housing to protect the coil, the second magnetic element and the telescopic element.
  • the exciter housing can be made of magnetically permeable material, such as iron, steel, and the like.
  • the coil is connected with external power supply, amplifier and other components to receive the control signal and generate an alternating magnetic field according to the control signal.
  • the second magnetic part can be a permanent magnet, etc., the magnetic field generated by the second magnetic part can be called a static magnetic field, and the material of the stretchable part can be a giant magnetostrictive material well known to those skilled in the art.
  • the coil, the second magnetic element, and the telescopic element can all be types well known to those skilled in the art, and the embodiments of the present disclosure are not limited thereto.
  • the static magnetic field is used to provide a static working point for the telescopic parts, and the alternating magnetic field provides a dynamic working space for the telescopic parts. Sexual elongation or shortening, thereby driving the second housing 123 to vibrate.
  • the axis of the coil is not perpendicular to the second casing 123 , for example, the axis of the coil is parallel to the second casing 123 .
  • the external dimension of the exciter 110 along the reciprocating movement direction of the second housing 123 is approximately the radial dimension of the exciter 110 along the coil, and the external dimension of the exciter 110 along the coil radial direction is much smaller than that of the exciter 110 along the coil axial direction. In this way, when the thickness of the refrigerator along the reciprocating movement direction of the second housing 123 is constant, the insulation layer 121 can obtain the maximum thickness.
  • the housing may specifically be a box.
  • FIG. 15 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 16 is a first cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • a refrigerator according to an embodiment of the present disclosure includes a box body 210 and an exciter 240.
  • the box body 210 includes a refrigerator body and a switch door. Cavities for storing items such as freezing cabins, refrigerated cabins, and temperature-regulating cabins can be formed on the refrigerator body. Tempering cabin.
  • the number of refrigerator doors can also be three, and the freezing compartment, the refrigerating compartment and the temperature regulating compartment are respectively covered.
  • the refrigerator includes a thermal insulation layer 212.
  • the thermal insulation layer 212 has good heat insulation performance, and can avoid heat exchange between the interior of the refrigerator and the exterior of the refrigerator, so that the freezing compartment, refrigerating compartment, and temperature-regulating compartment inside the refrigerator are all maintained within a preset temperature range.
  • a first shell 213 is provided inside the heat preservation layer 212, and the first shell 213 is respectively set on the refrigerator body and the switch door.
  • the first housing 213 can be made of plastic, etc., which is easy to clean and resistant to acid and alkali corrosion.
  • a second casing 220 is provided outside the insulation layer 212. According to the location of the actuator 240, the second casing 220 can be arranged on the refrigerator body, on the switch door, or on both the refrigerator body and the switch door.
  • the material of the second housing 220 can be glass, plastic, etc.
  • the materials of the refrigerator body and the second housing 220 on the switch door can be the same or different.
  • the actuators 240 can be arranged on the refrigerator body and the switch door at the same time.
  • one actuator 240 is arranged on each switch door, and one actuator 240 is also arranged on the main body of the refrigerator.
  • the second housing 220 can be fixedly connected to the outer wall of the heat insulating layer 212.
  • the heat insulating layer 212 is provided with an accommodating part (not shown), and the inner cavity of the accommodating part constitutes the protective cavity 260.
  • the actuator 240 is located in the accommodating portion.
  • the refrigerator further includes a third casing 214, and the first casing 213 and the third casing 214 are attached to the inner and outer sides of the insulation layer 212 respectively.
  • the second casing 220 and the box body 210 Independently of each other, the space between the second housing 220 and the third housing 214 forms a protective chamber 260 .
  • the refrigerator further includes an elastic member 230, one end of the elastic member 230 is connected to the third housing 214, the other end of the elastic member 230 is connected to the second housing 220, and the actuator 240 is connected to the second housing 220 , used to drive the second casing 220 to vibrate relative to the box body 210 to make sound.
  • the elastic member 230 can stretch or shrink correspondingly along the vibration direction of the third housing 214, so as to drive the second housing 220 to vibrate and produce sound. That is to say, the refrigerator can realize surface vibration sound, and the sound emitted by the refrigerator has a relatively flat frequency response.
  • the weight of the actuator 240 is greater than that of the second housing 220 .
  • the exciter 240 is fixedly connected with the second housing 220 as a whole, it is equivalent to increasing the equivalent vibration mass of the second housing 220, thus helping the second housing 220 to excite low-frequency sounds, satisfying the requirements for sound generation.
  • the low-frequency sound design requirements of the equipment are described below.
  • the elastic member 230 has elasticity and can buffer the vibration of the second housing 220, the vibration of the exciter 240 is transmitted to the second housing 220 through the elastic member 230, and the second housing 220 can have a larger the vibration amplitude.
  • the amount of air pushed by the second housing 220 becomes larger when vibrating, which also helps the second housing 220 to emit a better low-frequency sound.
  • a protective chamber 260 is disposed in the elastic member 230 , and the protective chamber 260 runs through both ends of the elastic member 230 along the vibration direction of the second housing 220 .
  • the second housing 220 and the third housing 214 respectively cover ports at two ends of the protection cavity 260 , and the actuator 240 is located in the protection cavity 260 .
  • the elastic member 230 can provide protection for the exciter 240 to prevent foreign matter such as water and dust from depositing on the exciter 240 .
  • the elastic member 230 may be a rubber member, which has elasticity and can protect the actuator 240 .
  • the compliance range of the elastic member 230 refers to the range in which the force experienced by the elastic member 230 is linearly proportional to its stretching distance.
  • the compliance range of the elastic member 230 is exceeded, the amount of expansion and contraction of the elastic member 230 is small, which easily causes the sound emitted by the second housing 220 to have nonlinear distortion.
  • the thickness of the elastic member 230 along the vibration direction X can be increased.
  • FIG. 17 is a second cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • FIG. 24 is a schematic structural diagram of part A in FIG. 17 .
  • the elastic member 230 can also be bent in the vibration direction X of the second housing 220 . That is, the elastic member 230 may have a bellows-like structure.
  • the bending times of the elastic member 230 may be one or more times.
  • the elastic member 230 includes a bent portion 231 whose cross-sectional shape is U-shaped or V-shaped, and two ends of the bent portion 231 are respectively connected to the third housing 214 and the second housing 220 .
  • the bent portion 231 may protrude toward the outside of the protection cavity 260 .
  • FIG. 18 is a third cross-sectional view showing the location of the actuator 240 of the refrigerator in FIG. 15 .
  • the bent portion 231 can also protrude toward the inner side of the protection cavity 260 .
  • the stretching deformation of the elastic member 230 along the vibration direction X can be realized by the two ends of the bending portion 231 approaching or moving away from each other and the compression or stretching deformation of the bending portion 231 itself.
  • the elastic member 230 has a large compliance range,
  • the second casing 220 can be allowed to have a relatively large vibration amplitude, and nonlinear distortion of the sound emitted by the second casing 220 can be avoided.
  • the surface of the elastic member 230 has an adhesive surface, and the second housing 220 and the third housing 214 are fixed to the elastic member 230 respectively.
  • the elastic member 230 can also be water glue, masking glue, acrylic glue, etc., with low cost.
  • the protective chamber 260 can be divided into a closed chamber.
  • the elastic member 230 is a gas-permeable member, so that the gases on both sides of the protection chamber 260 can communicate with each other through the elastic member 230 .
  • the volume of the protection cavity 260 becomes smaller, and the gas in the protection cavity 260 is squeezed by the second casing 220 and flows out of the protection cavity 260 .
  • the volume of the protection chamber 260 becomes larger, and the gas outside the protection chamber 260 can flow toward the inside of the protection chamber 260 . In this way, the gas resistance experienced by the second casing 220 is small, the second casing 220 can have a larger vibration amplitude, and the sound emitted by the refrigerator has a larger sound pressure level.
  • the elastic member 230 can be made of foam, double-sided tape and other materials.
  • the foamed material has relatively good elasticity and has air-permeable air holes, so as to realize mutual circulation of gases on both sides of the protective cavity 260 .
  • the compliance range of the double-sided adhesive tape can be 0.3mm-1mm.
  • the second housing 220 may be a steel plate, a glass plate, or the like. It can be understood that when the second housing 220 is a steel plate or a glass plate, the hardness of the second housing 220 is relatively high, and the damping is relatively small. In this way, the second housing 220 is likely to produce a sharp response at the resonant frequency.
  • Fig. 19 is a fourth cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • Fig. 20 is a fifth sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • Fig. 21 is a sixth cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • Fig. 23 is a seventh cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • the second housing 220 includes a second housing body 221 and a damping layer 222 , the second housing body 221 and the damping layer 222 are attached to each other, and the damping layer 222 The damping of is greater than the damping of the second housing body 221 .
  • the damping of the second housing 220 becomes larger, so as to prevent the second housing 220 from affecting the sense of hearing due to obvious frequency response peaks and valleys caused by resonance at the resonant frequency due to too small internal damping.
  • the damping layer 222 can be a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel or an acrylic panel, which is cheap and easy to obtain. At this time, the damping layer 222 may be disposed on a side of the second housing 220 close to the actuator 240 , or disposed on a side of the second housing 220 away from the actuator 240 .
  • the actuator 240 can be directly connected to the damping layer 222 .
  • an avoidance gap may be provided on the damping layer 222 , and the exciter 240 is located in the avoidance gap and connected to the second housing body 221 .
  • the damping layer 222 can be a foam material.
  • the material of the damping layer 222 is polyurethane, etc. Craft molding.
  • the damping layer 222 may also be filled with fibers to improve the damping of the damping layer 222 .
  • a foaming cavity is provided in the second housing body 221, and the damping layer 222 is filled in the foaming cavity, so that the second housing body 221 is surrounded by the damping layer 222, and the second housing body 220 The strength is high, and the damping layer 222 is prevented from being broken.
  • the second housing 220 has a resonance position, and when the exciter 240 drives the second housing 220 to vibrate, the resonance position of the second housing 220 resonates with the exciter 240, resulting in different positions of the second housing 220 The vibration amplitudes are different, and the second casing 220 emits an abnormal sound. It can be understood that when the exciter 240 drives the second casing 220 to vibrate, the vibration position of the second casing 220 is ring-shaped and surrounds the periphery of the exciter 240 .
  • the resonance position of the second housing 220 is related to the material and structure of the second housing 220 , and the resonance position of the second housing 220 can be obtained through simulation, which is not limited by the embodiments of the present disclosure.
  • Fig. 25 is a schematic structural diagram of the second casing in Fig. 15 .
  • the refrigerator further includes a reinforcing member 250 , and the reinforcing member 250 is arranged at the resonance position of the second casing 220 and fixed with the second casing 220 In this way, the different positions of the second housing 220 can have approximately the same strength, the amplitude of each position of the second housing 220 is approximately the same, and the second housing 220 can translate as a whole when vibrating, avoiding the second housing 220 Unusual sound.
  • the material of the reinforcement member 250 may be plastic, metal or the like.
  • the material of the reinforcing member 250 may be aluminum, stainless steel and the like. According to different materials of the reinforcing member 250 and the second housing 220 , the reinforcing member 250 can be fixed on the second housing 220 by bonding, welding and other methods.
  • the reinforcing piece 250 can also be formed by stamping.
  • the stiffener 250 may be annular and surround the actuator 240 .
  • the reinforcing member 250 may also be block-shaped, there are multiple reinforcing members 250 , and the reinforcing members 250 are arranged at intervals along the circumferential direction of the exciter 240 .
  • the reinforcing member 250 is fixedly connected to the outer wall of the second housing 220 , and the reinforcing member 250 may be disposed on a side of the second housing 220 close to the actuator 240 or a side away from the actuator 240 .
  • the second housing 220 may be a steel plate or a glass plate.
  • the reinforcing member 250 when the second housing 220 has a foaming cavity, can also be arranged on the outer wall of the second housing body 221 (as shown in FIG. 25 ), or the reinforcing member 250 can be combined with the foaming cavity.
  • the inner wall surfaces of the cavity are fixedly connected (as shown in FIG. 18 ).
  • the height of the reinforcing member 250 along the vibration direction X of the second housing 220 is less than or equal to the cavity height of the foaming chamber along the vibration direction X of the second housing 220, that is, to prevent the reinforcing member 250 from damaging the second housing body 221 to prevent the reinforcement 250 from affecting the strength of the second casing 220 and causing the resonance position of the second casing 220 to change.
  • FIG. 23 is an eighth cross-sectional view of the position of the actuator of the refrigerator in Fig. 15 .
  • FIG. 26 is a schematic structural diagram of part B in FIG. 23 .
  • a recessed portion 211 is provided on the outer wall of the box body 210, the recessed portion 211 is equivalent to the accommodating portion 211 in FIG. 211 , there is an assembly gap L 2 between the side wall surface of the second housing 220 and the inner wall surface of the recessed portion 211 . In this way, the second housing 220 will not collide with the inner wall surface of the recessed portion 211 during the vibration process, so as to avoid noise from the second housing 220 .
  • the assembly gap L 2 can be set as required, for example, it can be 3mm-5mm.
  • the shape of the second housing 220 is adapted to the shape of the recessed portion 211, which can be a regular-shaped structural member such as a rectangular plate, a circular plate, or other irregular-shaped plates. shape structure.
  • the second housing 220 and the outer wall surface of the box body 210 may be a height difference between the second housing 220 and the outer wall surface of the box body 210 .
  • the second casing 220 and the outer wall of the box body 210 transition smoothly, so that the second casing 220 can form the outer wall of the box body 210, the outer wall of the box body 210 is relatively smooth, and the appearance of the refrigerator is relatively smooth. concise.
  • the elastic member 230 is connected to the side wall surface or the bottom wall surface of the recessed portion 211 as required.
  • one of the recessed portion 211 and the second casing 220 can be provided with a guide groove, and the other can be provided with a protruding guide portion, and the guide portion extends into the guide groove. , and can move relative to the guide groove.
  • the reinforcing member 250 can be used as a guide part, and correspondingly, there is a guide groove in the recessed part 211 into which the guide part can extend.
  • the box body 210 has a thermal insulation layer 212 , and the depression depth of the recessed portion 211 is smaller than the thickness of the thermal insulation layer 212 . In this way, the position corresponding to the actuator 240 of the box body 210 still has the insulation layer 212 with a preset thickness, so as to avoid heat exchange between the low-temperature gas inside the box body 210 and the high-temperature gas outside the box body 210, and the refrigerator still has Better insulation effect.
  • the second housing 220 forms an outer wall of the box 210 .
  • the second casing 220 is arranged outside the third casing 214 of the switch door, and the second casing 220 constitutes the switch door. outer wall.
  • the second casing 220 transitions smoothly with the outer wall surfaces of other switch doors, so as to prevent the switch door from protruding from other switch doors. At this time, the thickness of the insulating layer of the opening and closing door is smaller than the thickness of the insulating layers of other opening and closing doors.
  • Fig. 27 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 28 is the frequency response curves of the sound emitted by the first exciter and the sound excited by the second exciter in Fig. 27.
  • the refrigerator can be provided with multiple sounding components.
  • the refrigerator can be provided with two exciters, and the two exciters are arranged at intervals to form a stereo system.
  • the refrigerator may include two switch doors, and an actuator is correspondingly provided on each switch door.
  • the exciter assembly of the refrigerator in the embodiment of the present disclosure includes a first exciter and a second exciter.
  • the loudness difference at each octave of the sound excited by the first exciter and the second exciter is within the range that the human body cannot perceive, so that the sound of the first exciter and the second exciter is
  • the frequency response curves are approximately coincident, the user will not perceive the difference in the sound level of the first exciter and the second exciter, and will not perceive the sound source position of the first exciter and the second exciter, that is, the user's perception of the sound is reduced.
  • the perceived sensitivity of the source location optimizes the user experience.
  • the housing may specifically be a box.
  • Fig. 29 is a first structural schematic diagram of a second recessed portion in a refrigerator according to an embodiment of the present disclosure.
  • Fig. 30 is a second structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • a refrigerator 31 includes a box body 320 with a storage area inside; the box body 320 includes an insulating layer 321 , a first shell 322 and a second The casing 323 , the first casing 322 and the second casing 323 are attached to the inner and outer sides of the heat insulating layer 321 respectively.
  • Fig. 40 is a first structural schematic diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 41 is a second structural schematic diagram of a refrigerator according to an embodiment of the present disclosure. Please refer to FIG. 40 and FIG. 41 , in some embodiments, the embodiment of the present disclosure is described by taking the refrigerator 31 including four switch doors as an example. Two of the switch doors are used to cover the refrigerated compartment, and the other two switch doors are used to cover the freezer compartment.
  • the second housing 323 is respectively arranged on the storage part and the switch door.
  • the material of the second housing 323 can be glass, plastic, steel and so on.
  • the refrigerator 31 further includes an exciter assembly including a first exciter 311 and a second exciter 312 .
  • an exciter assembly including a first exciter 311 and a second exciter 312 .
  • the first exciter 311 and the second exciter 312 can form a stereo system to optimize user experience.
  • the first exciter 311 and the second exciter 312 can be set on the storage part at the same time, or on the switch door at the same time.
  • the two switch doors corresponding to the refrigerated compartment include a first switch door 324 and a second switch door 325, and the first actuator 311 and the second actuator 312 can be respectively arranged on On the first switch door 324 and the second switch door 325 .
  • the first actuator 311 and the second actuator 312 may be any one of a magnetostrictive actuator, an electromagnetic actuator, and a piezoelectric actuator. That is, the types of the first actuator 311 and the second actuator 312 may be the same or different.
  • the accommodating portion includes a first recessed portion and a second recessed portion, that is, the insulating layer 321 is provided with a first recessed portion and a second recessed portion 3211, and the first recessed portion and the second recessed portion 3211 are arranged at intervals.
  • the first exciter 311 is located in the first recess
  • the second exciter 312 is located in the second recess 3211
  • the second casing 323 covers the opening of the first recess and the opening of the second recess 3211 respectively.
  • the first recessed part and the second recessed part 3211 are respectively closed by the second casing 323, and surround a closed cavity, so as to avoid foreign matter such as dust and water from depositing on the first exciter 311 and the second exciter.
  • the service life of the first actuator 311 and the second actuator 312 is longer.
  • the part of the second housing 323 corresponding to the first concave part constitutes a first vibrating part (not shown), and the part of the second housing 323 corresponding to the second
  • the part corresponding to the recessed part 3211 constitutes the second vibrating part 3231; the first exciter 311 is connected with the first vibrating part for driving the first vibrating part to vibrate and sound, and the second exciter 312 is connected with the second vibrating part 3231 for use It drives the second vibrating part 3231 to vibrate and make sound.
  • first recessed part and the second recessed part 3211 are arranged at intervals, so that the first vibrating part and the second vibrating part 3231 are two parts of the second housing 323 that are not connected.
  • the first exciter 311 is connected with the first vibrating part to drive the first vibrating part to vibrate and sound
  • the second exciter 312 is connected to the second vibrating part 3231 to vibrate and drive the second vibrating part 3231 to vibrate and make sound, that is, the refrigerator 31 passes through the surface Vibrating sound
  • the user is relatively insensitive to the sound source of the vibrating sound, even if the user is located in a different position of the refrigerator 31, the position of the sound source will not be perceived to change, which optimizes the user experience.
  • the first vibrating part and the second vibrating part 3231 can constitute two mutually independent sound sources, and the sound waves emitted by the first vibrating part and the sound waves emitted by the second vibrating part 3231 are at the frequency of each octave.
  • the loudness difference is within the preset threshold range, that is, the range of loudness difference that the human body cannot perceive is 3dB.
  • the octave refers to the interval between two frequencies whose frequency ratio is 2 or 1/2 on the filter characteristic curve.
  • the loudness difference between the sound waves emitted by the first vibrating part and the sound waves emitted by the second vibrating part 3231 may be greater than 3dB, which can be ignored of.
  • the frequency response curve of the sound emitted by the first vibrating part and the frequency response curve of the sound emitted by the second vibrating part 3231 are approximately in a state of overlap, so as to avoid appearing in a certain frequency range, such as a frequency range lower than 400 Hz, where one of the excitation
  • the frequency response of the exciter is greater than the frequency response of another exciter, causing the user to perceive the sound to be loud and small, and the sound source location is close and far away.
  • the refrigerator 31 includes a control board 327, and the first actuator 311 and the second actuator 312 are respectively electrically connected to the control board 327, so as to control the first actuator 311 and the second actuator 327 through the control board 327. Start and stop of the second exciter 312, etc.
  • the refrigerator 31 is further provided with a display screen 326 for displaying image information, and the display screen 326 is electrically connected to the control board 327 .
  • the control board 327, display screen 326, etc. are usually concentrated at the location of one of the exciters.
  • the refrigerator 31 includes a bracket (not shown), the bracket and the control board 327 are located in the first recessed part, the bracket is fixed on the first vibrating part, and the control board and the display screen are fixed on the bracket.
  • the bracket may be a frame structure, or may be in the shape of a plate.
  • the material of the support can be plastic, steel and the like.
  • the bracket can be fixedly connected to the second housing 323 by means of bonding, screwing or the like.
  • the bracket can be fixed on the second housing 323 by double-sided tape or foam.
  • the second recessed portion 3211 is only used to accommodate the second actuator 312, and the first recessed portion houses the first actuator 311, a bracket, a display screen, etc., so that the first The projected area of the concave portion on the second housing 323 is greater than the projected area of the second concave portion 3211 on the second housing 323 . That is, the area of the first vibrating part is larger than that of the second vibrating part 3231 , and the first vibrating part may have a larger vibration amplitude than the second vibrating part 3231 .
  • part of the second housing 323 connected to the first exciter 311 is usually detachable.
  • the first exciter 311 is fixed on the first switch door 324 in FIG.
  • the sticker is fixed on the first housing 322. That is to say, there is an air gap between the second casing 323 on the first switch door 324 and the insulation layer 321 on the first switch door 324 .
  • the first exciter 311 can drive the second housing 323 on the switch door to vibrate, the vibration area is much larger than the area of the second vibrating part 3231, and the first exciter 311 can push a larger volume than the second exciter 312 amount of air.
  • the air gap between the heat insulating layer 321 and the second housing 323 communicates with the first recessed portion, which is equivalent to increasing the equivalent volume of the first recessed portion.
  • the first recessed portion With a larger volume, the air resistance encountered by the first vibrating part 3231 when vibrating is smaller than that experienced by the second vibrating part 3231 when vibrating.
  • the first vibrating part has a larger area and larger vibration amplitude than the second vibrating part 3231, and the first vibrating part can push a larger volume of air than the second vibrating part 3231.
  • the vibrating part can emit better low-frequency sound.
  • the loudness of the first vibrating part 3231 on the first switch door 324 is greater than the loudness of the second vibrating part 3231 on the second switch door 325 .
  • the frequency response curve of the first vibrating part and the frequency response curve of the second vibrating part 3231 approximately overlap.
  • the low-frequency sound of the second vibrating part 3231 can be improved by improving the amount of air that the second vibrating part 3231 can push. For example, when the amount of air pushed by the first vibrating part and the second vibrating part 3231 is approximately the same, the first vibrating part and the second vibrating part 3231 can emit approximately the same low frequency sound.
  • vibration amplitude of the first vibrating part provided with brackets, display screens and other components is smaller than that of the first vibrating part without brackets, display screens and other components.
  • the first concave portion has a first projected area on the second casing 323 , that is, the area of the first vibrating portion
  • the second concave portion 3211 has a second projected area on the second casing 323 , the area of the second vibrating part 3231, the second projected area is smaller than the first projected area, that is, the area of the second vibrating part 3231 is smaller than the area of the first vibrating part.
  • the first vibrating part and the second vibrating part 3231 can push approximately the same volume of air, and the first vibrating part and the second vibrating part 3231 can emit approximately same low frequency sound.
  • the area of the second vibrating portion is 0.7-0.85 times that of the first vibrating portion.
  • the size relationship between the first projected area and the second projected area is related to factors such as the size of the bracket, the weight of the bracket, and the weight of the display screen, which are not limited by the embodiments of the present disclosure.
  • the depths of the depressions at different positions of the second depressions 3211 are the same, that is, the second depressions 3211 are groove-shaped structures with equal depths, and the second depressions 3211 are easy to form, and can be fabricated. The cost is lower.
  • the position of the second recessed portion 3211 corresponding to the second actuator 312 has a first recessed depth, and other positions of the second recessed portion 3211 have a second recessed depth.
  • the first recess depth is greater than the second recess depth.
  • the second recessed portion 3211 is stepped, the depth of the second recessed portion 3211 corresponding to the second exciter 312 is greater, and the depth of other positions of the second recessed portion 3211 is smaller.
  • the thickness of the insulating layer 321 at the position corresponding to the second exciter 312 is small, while the portion of the insulating layer 321 corresponding to other positions of the second recessed portion 3211 has a relatively large thickness, and the insulating effect of the insulating layer 321 is relatively high. it is good.
  • Fig. 31 is a third structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • Fig. 32 is a fourth structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • At least one heat dissipation channel 3212 is provided in the heat preservation layer 321, one end of the heat dissipation channel 3212 communicates with the inner wall of the second recess 3211, and the other end of the heat dissipation channel 3212 communicates with the heat preservation
  • the top wall or the bottom wall of the layer 321 is connected; the second housing 323 is provided with cooling holes, and the cooling holes are arranged opposite to the cooling channel 3212 .
  • one end of the heat dissipation channel 3212 communicates with the second recessed portion 3211 , and the other end passes through the outer wall of the thermal insulation layer 321 .
  • the second housing 323 is provided with cooling holes (not shown), and the cooling holes are arranged opposite to the cooling channel 3212.
  • the second recessed part 3211 communicates with the outside air through the cooling channel 3212, and the heat generated by the second exciter 312
  • the heat can be conducted to the outside air through the heat dissipation channel 3212, and the heat dissipation effect of the second actuator 312 is better, so as to prevent the vibration amplitude of the second vibrating part 3231 from being reduced due to overheating of the second actuator 312.
  • the air in the second recessed portion 3211 can communicate with the outside air through the heat dissipation channel 3212, the air resistance received by the second housing 323 is small, and the vibration of the second housing 323 The larger the amplitude, the sound emitted by the second vibrating part 3231 has a larger sound pressure level.
  • the number of cooling channels 3212 can be more than one. In this way, the communication area between the second concave portion 3211 and the outside air is larger, which helps more heat to be dissipated through the cooling channels 3212, and the cooling effect is better. .
  • the cooling holes can be arranged at any position of the second casing 323 , for example, the cooling holes are arranged on the front side wall of the refrigerator 31 .
  • the heat dissipation holes can be arranged on the top wall or the bottom wall of the second housing 323, that is, the heat dissipation holes can be hidden on the bottom or top of the refrigerator 31.
  • the heat dissipation channels 3212 can extend vertically or in an oblique direction, so that the hot air in the second recess 3211 and the cold air outside the refrigerator 31 can be realized by utilizing the chimney effect. Convection is formed to increase the heat dissipation rate of the second actuator 312 .
  • the refrigerator 31 is also provided with a first air vent.
  • the protective part (not shown), the first air-permeable protective part is used to prevent foreign matter from entering the heat dissipation channel 3212 .
  • the air permeability of the first air-permeable protection member is better, and it does not affect the mutual circulation between the hot air in the second recessed portion 3211 and the cold air outside the refrigerator 31 .
  • the first air-permeable guard can also prevent external foreign matter, such as water, dust, dander, etc., from entering the second recessed part 3211 through the heat dissipation channel 3212, that is, the second actuator 312 can be formed more efficiently by setting the first air-permeable guard. good protection.
  • the first breathable protective member includes a polytetrafluoroethylene layer and a textile layer, and the polytetrafluoroethylene layer and the textile layer are attached to each other, wherein the polytetrafluoroethylene layer and the textile layer have better air permeability, and the textile layer
  • the layer can form a protection for the polytetrafluoroethylene layer to prevent foreign matter from clogging the polytetrafluoroethylene layer.
  • the first air-permeable protection part is detachably connected to the refrigerator 31, so as to regularly clean or replace the first air-permeable protection part.
  • Fig. 33 is a fifth structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • Fig. 34 is a sixth structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • Fig. 35 is a seventh structural schematic diagram of the second recessed portion in the refrigerator according to an embodiment of the present disclosure.
  • the projected shape of the second concave portion 3211 on the second housing 323 can be a regular geometric shape, such as a rectangle, a circle or an ellipse, which is easy to form and low in production cost. Its shape can be designed as required, as long as the projected area requirement of the second concave portion 3211 can be met.
  • Fig. 36 is a schematic structural diagram of a second recessed portion in a refrigerator according to an embodiment of the present disclosure.
  • the second recessed portion 3211 includes a plurality of connected cavities.
  • a plurality of cavities communicate with each other to form a resonant cavity, and different cavities have different resonant frequencies, so that the resonant frequency range of the sound emitted by the second vibrating part 3231 is wider, and the sound emitted by the second vibrating part 3231 can be in a wider range.
  • a higher sound pressure level is obtained in the frequency range.
  • the second actuator 312 and the center of the second recessed portion 3211 are arranged at intervals in a direction parallel to the second casing 323 .
  • the second vibrating part 3231 can be excited to generate more resonance modes, so that the resonant frequency range of the sound emitted by the second vibrating part 3231 is wider, and the sound emitted by the second vibrating part 3231 can be obtained in a wider frequency range. Higher sound pressure level. At the same time, it can also prevent the sound emitted by the second vibrating part 3231 from generating regular standing waves and reduce sound distortion.
  • the following method can also be adopted, so that the user cannot perceive the loudness difference between the sound waves emitted by the first vibrating part and the sound waves emitted by the second vibrating part 3231 , reducing the user's perception sensitivity to the sound source.
  • Fig. 37 is a system architecture diagram of a refrigerator according to an embodiment of the present disclosure. Please refer to FIG. 37 , in some embodiments, on the basis of FIG. 27 , it is also possible to optimize the first actuator 311 and the second actuator 312 by controlling the input signals of the first actuator 311 and the second actuator 312. Low frequency sound.
  • the refrigerator 31 includes a controller; a first high-pass filter 361, the input end of the first high-pass filter 361 is electrically connected to the controller, and is used to filter out sound wave signals lower than a preset frequency; the first low-pass filter 361 Pass filter 362, the input end of the first low pass filter 362 is electrically connected with the controller, is used for filtering out the sound wave signal higher than preset frequency; The second high pass filter 363, the input end of the second high pass filter 363 It is electrically connected with the controller, and is used to filter out the sound wave signal lower than the preset frequency; the second low-pass filter 364, and the input terminal of the second low-pass filter 364 is electrically connected with the controller, and is used to filter out the sound wave signal higher than the preset frequency. Acoustic signal of set frequency.
  • the first high-pass filter 361 , the first low-pass filter 362 , the second high-pass filter 363 , and the second low-pass filter 364 can all be types well-known to those skilled in the art, and the embodiments of the present disclosure do not limit them thereto.
  • the preset frequency is a frequency point at which the loudness of sounds emitted by the first vibrating part and the second vibrating part 3231 differ greatly.
  • the preset frequency may be 400 Hz.
  • the first high-pass filter 361 and the second high-pass filter 363 can pass high-frequency control signals higher than 400 Hz.
  • the first low-pass filter 362 and the second low-pass filter 364 can pass low-frequency control signals below 400 Hz.
  • the refrigerator 31 includes a first summing module 365 , and the output terminals of the first low-pass filter 362 and the second low-pass filter 364 are respectively electrically connected to the input terminals of the first summing module 365 .
  • the low-frequency control signal below 400 Hz passed by the first low-pass filter 362 and the second low-pass filter 364 is mixed by the first summing module 365 .
  • the summing method of the first summing module 365 can be a summing method well known in the art, and processed by an ARM processor or a digital signal processing (Digital Signal Processing) device.
  • the refrigerator 31 also includes a first delay module 366, the input terminal of the first delay module 366 is electrically connected to the output terminal of the first summing module 365; the second summing module 367, the first high-pass filter The output end of the device 361 and the output end of the first delay module 366 are all electrically connected with the input end of the second summing module 367, and the output end of the second summing module 367 is electrically connected with the first exciter 311;
  • the third summing module 368 , the output end of the second high-pass filter 363 and the output end of the first delay module 366 are both electrically connected to the input end of the third summing module 368 , and the output end of the third summing module 368 is electrically connected to the second exciter 312 .
  • the low-frequency control signal summed by the first summing module 365 is divided into two paths and output to the first exciter 311 and the second exciter 312 respectively, that is, output through the second summing module 367 and the first high-pass filter 361
  • the high-frequency control signal is summed and output to the first exciter 311
  • the high-frequency control signal output by the second high-pass filter 363 is summed by the third summing module 368 and then output to the second exciter 312 .
  • the output terminals of the second summation module 367 and the third summation module 368 can be respectively connected to the first amplifier 3691 and the second amplifier 3692 for respectively amplifying the input to the first exciter 311 and the second exciter 312 control signal at .
  • the low-frequency control signals below 400 Hz input by the first exciter 311 and the second exciter 312 are the same, and the high-frequency control signals above 400 Hz input by the first exciter 311 and the second exciter 312 are approximately the same of.
  • the difference in loudness per octave between the sound excited by the first exciter 311 and the sound excited by the second exciter 312 is less than 3 dB.
  • the refrigerator 31 also includes a first time delay module 366, through the first time delay Module 366 performs delay processing on the added low-frequency control signal, so that there is a phase difference between the low-frequency control signal and the high-frequency control signal.
  • the user can only perceive the orientation of the high-frequency sound higher than 400 Hz heard first, and it is difficult to perceive the orientation of the low-frequency sound lower than 400 Hz heard later.
  • the refrigerator 31 can improve the control signals of the second recessed portion 3211 and the first actuator 311 and the second actuator 312 at the same time.
  • Fig. 40 is a first structural schematic diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 38 is a system architecture diagram of the refrigerator in Fig. 40 .
  • the refrigerator 31 can also be provided with an exciter capable of producing a low tone on the basis of Fig. 27.
  • the first exciter 311 and the second exciter 312 are set On the switch door; the refrigerator 31 also includes a third exciter 313, the third exciter 313 is arranged on the storage part, and is used to drive the second casing 323 on the storage part to vibrate and make sound.
  • the third exciter 313 can be set at the outer wall position of the box body 320 to send low-frequency sound through the third exciter 313, and the first exciter located on the switch door 311 and the second exciter 312 emit high-frequency sounds.
  • a third actuator 313 may be provided on the top of the storage part, and a third actuator 313 may also be provided on the side of the storage part.
  • the refrigerator 31 also includes a controller; a third high-pass filter 371, the input end of the third high-pass filter 371 is electrically connected to the controller, and is used to filter out sound wave signals lower than a preset frequency; the third high-pass filter 371 The output end of the high-pass filter 371 is electrically connected with the first exciter 311; the third low-pass filter 372, the input end of the third low-pass filter 372 is electrically connected with the controller, and is used to filter out frequencies higher than the preset frequency.
  • the fourth high-pass filter 373 the input end of the fourth high-pass filter 373 is electrically connected to the controller, used to filter out the acoustic wave signal lower than the preset frequency, the output end of the fourth high-pass filter 373 is connected with the second
  • the exciter 312 is electrically connected;
  • the fourth low-pass filter 374, the input end of the fourth low-pass filter 374 is electrically connected to the controller, and is used to filter out sound wave signals higher than a preset frequency.
  • the third high-pass filter 371 , the third low-pass filter 372 , the fourth high-pass filter 373 and the fourth low-pass filter 374 can all be types well-known to those skilled in the art, which are not limited by the embodiments of the present disclosure.
  • the preset frequency is a frequency point at which the loudness of sounds emitted by the first vibrating part and the second vibrating part 3231 differ greatly.
  • the preset frequency may be 400 Hz.
  • the third high-pass filter 371 and the fourth high-pass filter 373 can pass the high-frequency control signal higher than 400 Hz.
  • the third low-pass filter 372 and the fourth low-pass filter 374 can pass low-frequency control signals lower than 400 Hz.
  • the refrigerator 31 includes a fourth summing module 375, and the output terminal of the third low-pass filter 372 and the output terminal of the fourth low-pass filter 374 are both electrically connected to the input terminal of the fourth summing module 375 , the output end of the fourth summing module 375 is electrically connected to the third exciter 313 . That is, through the fourth summing module 375, the low-frequency control signal below 400 Hz passed by the third low-pass filter 372 and the fourth low-pass filter 374 is mixed, and the added control signal is sent to the third on the exciter 313 to control the third exciter 313 to emit low-frequency sounds below 400 Hz.
  • the summing mode of the fourth summing module 375 can be an existing summing mode, and is processed by an ARM processor or a digital signal processing (Digital Signal Processing) device, and the calculation amount of the sum is relatively small. Low, the hardware requirements for the refrigerator 31 are low.
  • the output terminals of the third high-pass filter 371, the fourth high-pass filter 373, and the fourth summing module 375 can be connected to the third amplifier 3761, the fourth amplifier 3762, and the fifth amplifier 3763, respectively, for respectively
  • the control signals input to the first driver 311 , the second driver 312 and the third driver 313 are amplified.
  • the refrigerator 31 may improve the second recessed part 3211 and at the same time provide the third actuator 313 on the storage part, which is not limited by the embodiments of the present disclosure.
  • Fig. 41 is a second structural schematic diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 39 is a system architecture diagram of the refrigerator in Fig. 41 .
  • the refrigerator 31 can also be provided with a low-frequency speaker on the basis of FIG.
  • a third recessed portion for accommodating the woofer 314, and a sound hole is provided at a position corresponding to the third recessed portion of the second casing 323, and the sound hole communicates with the inner and outer sides of the second casing 323;
  • the woofer 314 can be a woofer well known to those skilled in the art, which can emit low-frequency sounds.
  • the insulating layer 321 is provided with a third recessed portion for accommodating the woofer 314 , and the third recessed portion can be disposed at any position of the box body 320 .
  • the woofer 314 may be disposed on the top or the bottom of the cabinet 320 .
  • the second housing 323 is provided with a sound hole, so that the sound from the subwoofer 314 can be transmitted to the outside of the refrigerator 31 through the sound hole.
  • the sound hole can be a circular hole, a rectangular hole, or the like.
  • the number of sound holes can be multiple.
  • the refrigerator 31 further includes: a second air-permeable protective member, which is disposed at the sound outlet and used to prevent foreign objects from entering the third recessed portion.
  • the air permeability of the second air-permeable protection member is better, and it does not affect the mutual circulation between the hot air in the third recess and the cold air outside the refrigerator 31 .
  • the second air-permeable protective piece can also prevent external foreign matter, such as water, dust, dander, etc., from entering the third recess through the sound hole, that is, the woofer 314 can be better protected by setting the second air-permeable protective piece. .
  • the second breathable protective member includes a polytetrafluoroethylene layer and a textile layer, and the polytetrafluoroethylene layer and the textile layer are attached to each other, wherein the polytetrafluoroethylene layer and the textile layer have better air permeability, and the textile layer
  • the layer can form a protection for the polytetrafluoroethylene layer to prevent foreign matter from clogging the polytetrafluoroethylene layer.
  • the second air-permeable protection member is detachably connected to the refrigerator 31, so as to regularly clean or replace the second air-permeable protection member.
  • the refrigerator 31 also includes a controller; a fifth high-pass filter 381, the input end of the fifth high-pass filter 381 is electrically connected to the controller, and is used to filter out sound wave signals lower than a preset frequency.
  • the output end of the high-pass filter 381 is electrically connected with the first exciter 311; the fifth low-pass filter 382, the input end of the fifth low-pass filter 382 is electrically connected with the controller, and is used for filtering out the Acoustic signal; the sixth high-pass filter 383, the input end of the sixth high-pass filter 383 is electrically connected with the controller, used to filter out the acoustic wave signal lower than the preset frequency, the output end of the sixth high-pass filter 383 is connected with the second
  • the exciter 312 is electrically connected; the sixth low-pass filter 384, the input end of the sixth low-pass filter 384 is electrically connected to the controller, and is used to filter out sound wave signals higher than a preset frequency.
  • the fifth high-pass filter 381 , the fifth low-pass filter 382 , the sixth high-pass filter 383 and the sixth low-pass filter 384 can all be types well-known to those skilled in the art, which are not limited by the embodiments of the present disclosure.
  • the preset frequency is a frequency point at which the loudness of sounds emitted by the first vibrating part and the second vibrating part 3231 differ greatly.
  • the preset frequency may be 400 Hz.
  • the fifth high-pass filter 381 and the sixth high-pass filter 383 can pass the high-frequency control signal higher than 400 Hz.
  • the fifth low-pass filter 382 and the sixth low-pass filter 384 can pass low-frequency control signals below 400 Hz.
  • the fifth summing module 385, the output terminal of the fifth low-pass filter 382 and the output terminal of the sixth low-pass filter 384 are all electrically connected to the input terminal of the fifth summing module 385, the fifth The output terminal of the summing module 385 is electrically connected to the woofer 314 . That is, through the fifth summing module 385, the low-frequency control signal below 400 Hz passed by the fifth low-pass filter 382 and the sixth low-pass filter 384 is mixed, and the added control signal is sent to the subwoofer 314 to control the woofer 314 to emit low-frequency sounds below 400 Hz.
  • the summing mode of the fifth summing module 385 can be an existing summing mode, and is processed by an ARM processor or a digital signal processing (Digital Signal Processing) device. Low, the hardware requirements for the refrigerator 31 are low.
  • the output terminals of the fifth high-pass filter 381, the sixth high-pass filter 383, and the fifth summing module 385 can be respectively connected to the sixth amplifier 3861, the seventh amplifier 3862, and the eighth amplifier 3863 for respectively
  • the control signals input to the first driver 311 , the second driver 312 and the woofer 314 are amplified.
  • the refrigerator 31 may improve the second recessed portion 3211 and provide the subwoofer 314 at the same time, which is not limited in the embodiments of the present disclosure.
  • FIG. 42 is a schematic structural diagram of a refrigerator in which the first exciter and the second exciter include voice coils according to an embodiment of the present disclosure.
  • FIG. 43 is a schematic structural diagram of the exciter in FIG. 42 .
  • the first actuator 311 and the second actuator 312 have the same structure, and both are electromagnetic actuators.
  • the electromagnetic exciter includes a vibrating voice coil 3121, an elastic wave 3122, a coil and a magnetic assembly.
  • the magnetic assembly includes a first magnetic conductor, a second magnetic conductor and a magnet.
  • the first magnetic conductor can be a T iron or a U iron
  • the second magnetic conductor is a Washer.
  • the magnet and the washer are located in the cavity surrounded by the U iron, there is a magnetic air gap between the outer wall of the magnet and the washer and the inner wall of the U iron, and the voice coil 3121 extends into the magnetic air gap , and around the magnet and washer, the magnetic assembly is used to provide a stable magnetic field in the magnetic air gap.
  • a variable control signal can be input into the coil to generate an alternating magnetic field.
  • the coil can reciprocate along its own circumferential direction in the superimposed magnetic field of the alternating magnetic field and the stable magnetic field.
  • the elastic wave 3122 surrounds the voice coil 3121 , for example, the elastic wave 3122 can be connected with the outer wall of the voice coil 3121 .
  • the elastic wave 3122 is an elastic member, and can be elastically deformed with the vibration of the voice coil 3121 to avoid deflection when the voice coil 3121 moves back and forth.
  • the refrigerator 31 further includes a heat transfer element 330, the voice coil 3121 is connected to the second casing 323 through the heat transfer element 330, and the vibration of the voice coil 3121 can be transmitted to the second casing 323 through the heat transfer element 330, In order to realize the vibration and sound generation of the second housing 323 .
  • the heat transfer element 330 is a heat conductive material, and the heat generated by the voice coil 3121 can be conducted to the second housing 323 through the heat transfer element 330 .
  • the material of the voice coil 3121 can be kraft paper, aromatic polyamide, etc. well known to those skilled in the art.
  • the voice coil 3121 is made of a heat-conducting material, such as metal such as aluminum, which is light in weight and high in heat conductivity, so as to increase the heat exchange between the heat-conducting element 330 and the voice coil 3121 .
  • the heat generated by the voice coil 3121 can be effectively transferred to the heat transfer element 330, the heat transfer element 330 is heated to heat up, heat exchange occurs between the heat transfer element 330 and the second housing 323, and the heat on the heat transfer element 330 is transferred to The second casing 323, the second casing 323 is in contact with the air, and performs heat exchange with the air to cool down, thereby reducing the temperature of the heat transfer element 330, so that the heat of the voice coil 3121 can continue to be conducted to the heat transfer element 330 , the heat dissipation effect of the voice coil 3121 is better, so as to prevent the voice coil 3121 from overheating, resulting in a smaller vibration amplitude of the voice coil 3121.
  • the heat transfer element 330 may be metal elements such as bolts and screws.
  • the heat transfer element 330 has a viscous heat-conducting glue, so that the voice coil 3121 can be fixed on the second housing 323 by applying heat-conducting glue between the voice coil 3121 and the second housing 323 , easy to assemble, and high stability.
  • the heat transfer member 330 may be silicone thermally conductive adhesive, polyurethane thermally conductive adhesive, or the like.
  • FIG. 44 is a first structural schematic diagram of the support in FIG. 43 .
  • FIG. 45 is a second structural schematic diagram of the support in FIG. 43 .
  • FIG. 46 is a cross-sectional view of the support in FIGS. 44 and 45 .
  • the refrigerator 31 also includes a support 340, the support 340 has: part 341, the voice coil 3121 is plugged with the socket part 341; the communication part 342, the communication part 342 is connected with the socket part 341, and the connection part 342 penetrates the side of the support member 340 facing the second housing 323 to transfer heat
  • the component 330 is filled in the insertion portion 341 and the communication portion 342 .
  • the supporting member 340 may be a columnar structure, or a cylindrical structure as shown in FIGS. 44 to 46 .
  • the insertion part 341 is arranged on one end surface of the support member 340, the voice coil 3121 and the insertion part 341 are inserted into each other and fixed by the heat transfer member 330, so that the fixing between the voice coil 3121 and the support member 340 is stable Sex is higher.
  • the voice coil 3121 and the heat transfer element 330 are in contact with each other, and the heat on the voice coil 3121 can be effectively transferred to the heat transfer element 330 .
  • the opposite end surface of the support member 340 is in contact with the second housing 323 .
  • the contact area between the support member 340 and the second housing 323 is larger, and the support stability is higher.
  • the support member 340 is also provided with a connecting portion 342, one end of the connecting portion 342 is connected to the socket portion 341, and the other end passes through the end surface of the support member 340, so that the heat transfer member 330 can flow into the connecting portion 342 through the socket portion 341, and
  • the supporting member 340 and the second housing 323 are fixed by bonding.
  • the heat transfer element 330 is fixedly connected with the second casing 323 and the voice coil 3121 respectively, and the heat of the voice coil 3121 can be conducted to the second casing 323 through the heat transfer element 330 .
  • the radial dimension of the connecting portion 342 near the second housing 323 is greater than the radial dimension of the inserting portion 341 away from the second housing 323 .
  • the radial dimension of the end of the insertion part 341 away from the second housing 323 is equivalent to the thickness of the voice coil 3121, and the gap between the insertion part 341 and the voice coil 3121 is The gap is used to fill the heat transfer element 330 .
  • the radial dimension of the end close to the second housing 323 of the insertion portion 341 may be greater than the thickness of the voice coil 3121 to fill a larger amount of the heat transfer element 330 .
  • the radial dimension of the communicating portion 342 along the radial direction of the voice coil 3121 can be fixed.
  • the radial dimension of the communicating portion 342 along the radial direction of the voice coil 3121 may be greater than the thickness of the voice coil 3121 . In this way, the fixing area between the supporting member 340 and the second housing 323 is larger.
  • the radial dimension of the connecting portion 342 can increase stepwise or gradually from the end close to the voice coil 3121 to the end far away from the voice coil 3121 , so as to increase the coating area of the heat transfer element 330 on the second housing 323 , to improve the fixing stability of the support member 340 .
  • the second shell 323 when the second shell 323 is made of different materials, the second shell 323 may have different thicknesses.
  • the thickness of the second casing 323 made of steel may be 1mm-2mm, and the thickness of the second casing 323 made of glass may be 2mm-3mm.
  • the thickness of the second shell 323 is small, the rigidity of the second shell 323 is small, and the second shell 323 is easily deformed.
  • FIG. 47 is a schematic diagram of the first structure when the reinforcing plate is provided on the second casing in FIG. 42 .
  • Fig. 49 is a schematic diagram of the reinforced plate structure when the honeycomb sandwich panel is set in Fig. 47.
  • FIG. 48 is a second structural schematic diagram when a reinforcement plate is provided on the second casing in FIG. 42 .
  • the refrigerator 31 further includes a sounding board 350 , the sounding board 350 is attached to the side of the second housing 323 corresponding to the recessed portion, and the voice coil 3121 and the sounding board 350 Fixedly connected, the damping of the sounding board 350 is greater than that of the second housing 323 .
  • the sounding board 350 can be fixedly connected with the second housing 323 through fasteners such as bolts. In some embodiments, both sides of the sounding board 350 are bonded and fixed to the second housing 323 and the voice coil 3121 through the heat transfer member 330 , the fixing stability is high, and the gap between the sounding board 350 and the second housing 323 It has a large heat exchange capacity.
  • the damping of the second shell 323 is small and the hardness is high. In this way, the second shell 323 is prone to resonant sound and high-frequency sharp sound.
  • the damping and rigidity of the first vibrating part and the second vibrating part 3231 are improved by arranging the sounding plate 350 with larger damping, which can expand the frequency range of the sound emitted by the second housing 323 and prevent the second housing 323 from resonating and
  • the high-frequency sharp sound also prevents the audio response of the second casing 323 from producing obvious peaks and valleys and distortions that affect the sense of hearing.
  • the thickness of the sounding plate 350 may be less than 3mm.
  • the thickness of the sounding board 350 in the embodiment of the present disclosure may be 2mm.
  • the distance between the exciter and the second housing 323 becomes larger after the sounding plate 350 is installed.
  • the material of the second housing 323 is magnetic metal such as iron, the magnetic adsorption force between the second housing 323 and the actuator can be weakened, and the magnetic adsorption force between the second housing 323 and the actuator can be avoided. Affects the exciter vibration.
  • the sounding board 350 can be respectively arranged on the first vibrating part and the middle position of the second vibrating part 3231 .
  • the avoidance gap there is an avoidance gap between the edge of the sounding board 350 and the edge of the first vibrating part and between the edge of the sounding board 350 and the edge of the second vibrating part 3231, and the avoidance gap is set along the circumferential direction of the sounding board 350 .
  • the width of the avoidance gap may be 5mm-15mm.
  • the width of the avoidance gap in the embodiment of the present disclosure is relatively large, and the part of the second housing 323 corresponding to the avoidance gap can constitute a transition area, which is formed along with the sounding plate 350 .
  • the sounding board 350 includes a sounding board body 351 and a heat conduction part 352 for heat conduction, the voice coil 3121 is connected with the heat conduction part 352, and the heat conduction part 352
  • the heat element 330 is respectively disposed between the second housing 323 and the heat conduction part 352 and between the heat conduction part 352 and the voice coil 3121 .
  • the heat conduction part 352 constitutes a part of the sounding plate 350 and vibrates with the sounding plate 350 .
  • the voice coil 3121 is connected to the sounding board 350 through the heat transfer element 330 , the heat of the voice coil 3121 can be conducted to the heat conducting part 352 through the heat transfer part 330 , and the heat of the heat conducting part 352 can be conducted to the second housing 323 through the heat transfer part 330 .
  • the material of the heat conduction part 352 can be silicone heat conduction glue, polyurethane glue, polyurethane heat conduction and electric conduction glue, heat conduction silicone grease and the like.
  • the sounding panel 350 is a sandwich panel, wherein the sound emitted by the sandwich panel has higher amplitude and lower frequency than the sound emitted by the steel plate or glass plate, that is to say the sandwich panel The sound produced has better sound quality than the sound produced by steel plate or glass plate.
  • the sounding board 350 includes a core material 353 and a skin (not shown), and the skin is attached to opposite sides of the core material 353; wherein, the skin is a heat-conducting material, and the heat-conducting part 352 is arranged on The position of the core material 353 corresponding to the voice coil 3121 .
  • the material and structure of the core material 353 are different.
  • the sounding panel 350 may be a honeycomb sandwich panel, for example, an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, and the like.
  • the core material 353 is a plate structure with a plurality of through holes, and the core material 353 can be made of aluminum, aramid fiber, kraft paper and other materials.
  • the heat conduction part 352 can be filled in the position of the through hole opposite to the voice coil 3121 .
  • the sounding board 350 may also be a foam sandwich panel, such as a polyvinyl chloride (PVC) foam sandwich panel, a polymethacrylimide (PMI) foam sandwich panel, and the like.
  • the foam sandwich panel is formed by foaming process.
  • the core material 353 has a receiving groove for receiving the heat conducting part 352 , and the heat conducting part 352 is disposed in the receiving groove.
  • the heat conduction part 352 can be arranged between the first skin and the second skin, and the core material 353 can be filled between the first skin and the second skin when foamed, And surround the heat conduction part 352 outside.
  • holes may be opened on the foam sandwich panel to form accommodating grooves, at this time, the heat conducting part 352 may be filled in the accommodating grooves.
  • the skins on both sides of the core material 353 are made of heat conduction materials such as carbon fiber and aluminum foil.
  • the heat of the voice coil 3121 can be transferred to the skin through the heat transfer member 330, and the heat of the skin is conducted to the heat-conducting part 352, and then the heat of the heat-conducting part 352 can be conducted to the other side of the skin.
  • the skin can be conducted to the second housing 323 through the heat transfer element 330 to dissipate heat.
  • the sounding board 350 includes an avoidance part, and the avoiding part communicates with both sides of the sounding board 350, and the voice coil 3121 can pass through Pass through the escape portion and be fixedly connected with the second housing 323 .
  • the voice coil 3121 is directly connected to the second housing 323 through the heat transfer element 330 , the transfer path is small, and the heat transfer efficiency is high.
  • the second aspect of the embodiments of the present disclosure provides a sound generating device, which includes a plurality of sound emitting elements, and the sound waves emitted by the plurality of sound emitting elements have a loudness difference of less than 3 dB at each octave.
  • a sound generating device which includes a plurality of sound emitting elements, and the sound waves emitted by the plurality of sound emitting elements have a loudness difference of less than 3 dB at each octave.
  • the sounding part can be an exciter or a loudspeaker, etc.
  • the type of the sound-generating device it can control the sound waves of the sound-generating device in different ways. Exemplarily, it is possible to improve the size of the recess for accommodating the exciter, improve the control signal control method of the exciter, set the exciter capable of emitting bass, and configure the woofer 314 capable of emitting bass, etc.
  • the sounding device is any one of a TV, a mobile phone, an earphone, and a sound box. That is, through the above-mentioned method, different sounding devices with multiple sounding parts can be adjusted to reduce the user's perception of the sound source of the sounding device. Sensitivity to optimize user experience.
  • the sounding part can be an exciter, and the user's sensitivity to the sound source of the TV can be reduced by improving the control signal control method of the exciter (as shown in Figure 37).
  • improvement can also be made by improving the control signal control method of the exciter and simultaneously setting the woofer 314 or setting the exciter capable of emitting bass, which is not limited by the embodiments of the present disclosure.
  • the refrigerator provided by the embodiments of the present disclosure is provided with an exciter, and the voice coil in the exciter is connected to the protective shell through a heat transfer element that is easy to conduct heat, so as to push the protective shell to vibrate and make sound.
  • the protective shell The sound pressure level of the sound emitted by the shell is better.
  • the integrity of the protective shell is good, which can effectively protect the exciter, and the heat generated by the voice coil vibration can be transferred to the protective shell through the heat transfer element in time, and the protective shell and the air can exchange heat and cool down. In this way, the heat of the voice coil can continue to be conducted to the protective shell, so as to realize the heat dissipation and cooling of the voice coil.
  • the outer shell can be specifically a box
  • the first shell can be specifically an inner tank
  • the second shell can be specifically a protective shell
  • the thermal insulation layer can be specifically a heat insulating member
  • the accommodating portion can be specifically located in a recessed portion.
  • Fig. 50 is a schematic structural diagram of a refrigerator according to an embodiment of the present disclosure.
  • Fig. 51 is a schematic diagram of the structure in which the exciter is connected to the protective case in Fig. 50 .
  • FIG. 52 is a schematic structural diagram of the exciter in FIG. 51.
  • a refrigerator includes a box body 410, the box body 410 includes an inner tank 411, a protective shell 412, and a heat insulating member 413, and the heat insulating member 413 is arranged on the inner tank 411 and Between the protective shells 412, the heat insulator 413 is provided with a recessed part 4131, and the opening of the recessed part 4131 is closed by the protective shell 412; the heat transfer element 420, the heat transfer element 420 is connected with the protective shell 412; the exciter 430, the exciter 430 Including a vibrating voice coil 431, the voice coil 431 is connected to the heat transfer element 420, so as to transmit the vibration of the voice coil 431 to the protective shell 412, and drive the protective shell 412 to vibrate and sound, and the heat generated by the voice coil 431 can be passed through the heat transfer
  • the member 420 is conducted to the protective shell 412.
  • the protective shell 412 is made of heat-conducting material, such as metal parts such as steel, which has good thermal conductivity, is easy to exchange heat with air, and has high strength. , high protection performance.
  • the actuators 430 can be installed on the refrigerator body and the switch door at the same time.
  • an actuator 430 is arranged on each switch door, and an actuator 430 is also arranged on the main body of the refrigerator.
  • the embodiment of the present disclosure is described by taking the exciter 430 disposed on the switch door as an example.
  • a recessed portion 4131 is provided on the heat insulating member 413 , the actuator 430 is disposed in the recessed portion 4131 , and the opening of the recessed portion 4131 faces one side of the protective shell 412 .
  • the protective shell 412 is fixedly connected with the heat insulator 413 , and the exciter 430 is connected with the part of the protective shell 412 corresponding to the recessed part 4131 , so as to drive the part of the protective shell 412 to vibrate and produce sound.
  • the embodiment of the present disclosure does not destroy the integrity of the protective shell 412, the actuator 430 is not exposed to the air, and the protective performance of the protective shell 412 is relatively good.
  • the sound emitted by the surface vibration of the embodiment of the present disclosure has a higher sound pressure level and a relatively flat frequency response than the sound emitted by the loudspeaker in the related art, and the sound quality is better.
  • the depth of the recessed portion 4131 is smaller than the thickness of the heat insulating member 413 .
  • the exciter 430 includes a voice coil 431 , a spring 432 , a coil, and a magnetic assembly.
  • the magnetic assembly includes a first magnetic conductor, a second magnetic conductor and a magnet.
  • the first magnetic conductor can be a T iron or a U iron
  • the second magnetic conductor is a Washer.
  • the magnet and the washer are located in the cavity surrounded by the U-iron, there is a magnetic air gap between the outer wall of the magnet and the washer and the inner wall of the U-iron, and the voice coil 431 extends into the magnetic air gap , and around the magnet and washer, the magnetic assembly is used to provide a stable magnetic field in the magnetic air gap.
  • a variable control signal can be input into the coil to generate an alternating magnetic field.
  • the coil can reciprocate along its own circumferential direction in the superimposed magnetic field of the alternating magnetic field and the stable magnetic field.
  • the elastic wave 432 surrounds the voice coil 431 , for example, the elastic wave 432 can be connected with the outer wall of the voice coil 431 .
  • the elastic wave 432 is an elastic member, and can be elastically deformed with the vibration of the voice coil 431 to avoid deflection when the voice coil 431 moves back and forth.
  • the voice coil 431 is fixedly connected to the protective shell 412 through the heat transfer element 420, and the heat transfer element 420 is made of heat-conducting material.
  • the material of the voice coil 431 can be kraft paper, aromatic polyamide, etc. well known to those skilled in the art.
  • the voice coil 431 is made of a heat-conducting material, such as metal such as aluminum, which is light in weight and high in heat conductivity, so as to increase the amount of heat exchange between the heat-conducting element 420 and the voice coil 431 .
  • the heat generated by the voice coil 431 can be effectively transferred to the heat transfer element 420, the heat transfer element 420 is heated up, heat exchange occurs between the heat transfer element 420 and the protective shell 412, and the heat on the heat transfer element 420 is transferred to the protective shell 412, the protective shell 412 is in contact with the air, and performs heat exchange with the air to cool down, thereby reducing the temperature of the heat transfer element 420, so that the heat of the voice coil 431 can continue to be conducted to the heat transfer element 420, and the heat dissipation of the voice coil 431 The effect is better.
  • the heat transfer element 420 may be metal elements such as bolts and screws.
  • the heat transfer element 420 has viscous heat-conducting glue, so that the voice coil 431 can be fixed on the shielding shell 412 by applying heat-conducting glue between the voice coil 431 and the shielding shell 412, which is easy to assemble, And the fixed stability is high.
  • the heat transfer member 420 can be silicone thermally conductive adhesive, polyurethane thermally conductive adhesive, and the like.
  • FIG. 53 is a first structural schematic diagram of the support in FIG. 52 .
  • FIG. 54 is a second structural schematic diagram of the support in FIG. 52 .
  • FIG. 55 is a cross-sectional view of the support in FIGS. 53 and 54 .
  • the refrigerator also includes a support 440 , and the support 440 has an insertion part 441 , the voice coil 431 is inserted into the socket part 441; the connecting part 442, the connecting part 442 is connected with the socket part 441, and the connecting part 442 runs through the side of the support member 440 facing the protective shell 412, and the heat transfer element 420 is filled in Inside the insertion part 441 and the communication part 442 .
  • the supporting member 440 is equivalent to the supporting member 440 in FIG. 44 , and will not be repeated here.
  • the support member 440 may be a columnar structure, or a cylindrical structure as shown in FIG. 4 to FIG. 6 .
  • the insertion part 441 is arranged on one end surface of the support member 440, the voice coil 431 and the insertion part 441 are inserted into each other and fixed by the heat transfer member 420, so that the fixing between the voice coil 431 and the support member 440 is stable Sex is higher.
  • the voice coil 431 and the heat transfer element 420 are in contact with each other, and the heat on the voice coil 431 can be effectively transferred to the heat transfer element 420 .
  • the opposite end surface of the support member 440 is in contact with the protective shell 412 .
  • the contact area between the support member 440 and the protective shell 412 is larger, and the support stability is higher.
  • the support member 440 is also provided with a connecting portion 442, one end of the connecting portion 442 is connected to the socket portion 441, and the other end passes through the end surface of the support member 440, so that the heat transfer element 420 can flow into the connecting portion 442 through the socket portion 441, and Adhesively fix the supporting member 440 and the protective shell 412 .
  • the heat transfer element 420 is fixedly connected to the protective shell 412 and the voice coil 431 respectively, and the heat of the voice coil 431 can be conducted to the protective shell 412 through the heat transfer element 420 .
  • the radial dimension of the connecting portion 442 near the protective shell 412 is greater than the radial dimension of the insertion portion 441 away from the protective shell 412 .
  • the radial dimension of the end of the inserting portion 441 away from the protective shell 412 is equivalent to the thickness of the voice coil 431, and the gap between the inserting portion 441 and the voice coil 431 Used to fill the heat transfer element 420 .
  • the radial dimension of the end close to the protective shell 412 of the insertion portion 441 may be greater than the thickness of the voice coil 431 to fill a larger amount of the heat transfer element 420 .
  • the radial dimension of the communicating portion 442 along the radial direction of the voice coil 431 can be fixed.
  • the radial dimension of the communicating portion 442 along the radial direction of the voice coil 431 may be greater than the thickness of the voice coil 431 . In this way, the fixing area between the support member 440 and the protective shell 412 is larger.
  • the radial dimension of the connecting portion 442 can increase stepwise or gradually from the end close to the voice coil 431 to the end far away from the voice coil 431, so as to increase the coating area of the heat transfer element 420 on the protective shell 412 and improve the Fixed stability of the support 440 .
  • the protective shell 412 when the protective shell 412 is made of different materials, the protective shell 412 may have different thicknesses.
  • the thickness of the protective shell 412 made of steel may be 1mm-2mm, and the thickness of the protective shell 412 made of glass may be 2mm-3mm.
  • Fig. 56 is a structural schematic diagram 1 when the protective shell in Fig. 50 is provided with a reinforcing plate.
  • Fig. 58 is a schematic diagram of the reinforced plate structure when the honeycomb sandwich panel is set in Fig. 56.
  • Fig. 57 is the second structural diagram when the protective shell in Fig. 50 is provided with a reinforcing plate. Please refer to FIG. 56 to FIG.
  • the refrigerator further includes a sounding board 450 , the sounding board 450 is attached to the side of the protective shell 412 corresponding to the recessed part 4131 , and the exciter 430 is fixedly connected to the sounding board 450 , the damping of the sounding board 450 is greater than the damping of the protective shell 412 .
  • the sounding board 450 can be fixedly connected with the protective shell 412 through fasteners such as bolts. In some embodiments, both sides of the sounding board 450 are bonded and fixed to the protective case 412 and the voice coil 431 through the heat transfer member 420, the fixing stability is high, and there is a large gap between the sounding board 450 and the protective case 412. The amount of heat exchange.
  • the damping of the protective shell 412 is small and the hardness is relatively high. In this way, the protective shell 412 is prone to resonant sound and high-frequency sharp sound.
  • the damping and rigidity of the part corresponding to the recessed part 4131 of the protective shell 412 is improved by setting the sounding plate 450 with greater damping, which can expand the frequency range of the sound emitted by the protective shell 412 and prevent the protective shell 412 from resonating and high-frequency sharp. The sound is avoided, and the audio response of the protective shell 412 is avoided to produce obvious peaks and valleys and distortion, which will affect the sense of hearing.
  • the thickness of the sounding plate 450 may be less than 3 mm.
  • the thickness of the sounding board 450 in the embodiment of the present disclosure may be 2 mm.
  • the distance between the exciter 430 and the protective shell 412 becomes larger after the sounding board 450 is installed.
  • the material of the protective shell 412 is magnetic metal such as iron, the magnetic adsorption force between the protective shell 412 and the actuator 430 can be weakened, so as to avoid affecting the actuator 430 due to the magnetic adsorption force between the protective shell 412 and the actuator 430. vibration.
  • the sounding plate 450 can be arranged at the opening of the recessed part 4131 at the middle position.
  • the avoidance gap there is an avoidance gap between the edge of the sounding plate 450 and the edge of the opening of the recessed part 4131 , and the avoidance gap is arranged along the circumference of the sounding plate 450 .
  • the width of the avoidance gap may be 5mm-15mm.
  • the width of the avoidance gap in the embodiment of the present disclosure is relatively large, and the part of the protective shell 412 corresponding to the avoidance gap can constitute a transition area, and it will follow the sounding plate 450.
  • the sounding board 450 includes a sounding board body 451 and a heat conducting part 452 for heat conduction, the voice coil 431 is connected to the heat conducting part 452, and the heat conducting part 420 are respectively disposed between the protective shell 412 and the heat conduction part 452 and between the heat conduction part 452 and the voice coil 431 .
  • the heat conduction part 452 constitutes a part of the sounding plate 450 and vibrates with the sounding plate 450 .
  • the voice coil 431 is connected to the sounding board 450 through the heat transfer element 420 , the heat of the voice coil 431 can be transferred to the heat conducting part 452 through the heat transfer part 420 , and the heat of the heat transfer part 452 can be transferred to the protective case 412 through the heat transfer part 420 .
  • the material of the heat conduction part 452 may be silicone heat conduction glue, polyurethane glue, polyurethane heat conduction and conductive glue, heat conduction silicone grease, and the like.
  • the acoustic panel 450 is a sandwich panel.
  • the sound from the sandwich panel has a higher amplitude and lower frequency than the sound from the steel plate and glass plate, that is to say, the sound from the sandwich panel has a higher amplitude than the sound from the steel plate or glass plate. Better sound quality.
  • the sounding board 450 includes a core material 453 and a skin, and the skin is attached to opposite sides of the core material 453; wherein, the skin is a heat-conducting material, and the heat-conducting part 452 is arranged on the core material 453 corresponding to the voice coil 431. location.
  • the material and structure of the core material 453 are different.
  • the sounding panel 450 may be a honeycomb sandwich panel, for example, an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, and the like.
  • the core material 453 is a plate structure with a plurality of through holes, and the core material 453 can be made of aluminum, aramid fiber, kraft paper and other materials.
  • the heat conduction part 452 can be filled in the position of the through hole opposite to the voice coil 431 .
  • the sounding board 450 can also be a foam sandwich panel, such as a polyvinyl chloride (PVC) foam sandwich panel, a polymethacrylimide (PMI) foam sandwich panel, and the like.
  • the foam sandwich panel is formed by foaming process.
  • the core material 453 has a receiving groove for receiving the heat conducting part 452 , and the heat conducting part 452 is disposed in the receiving groove.
  • the heat conduction part 452 can be arranged between the first skin and the second skin, and the core material 453 can be filled between the first skin and the second skin when foamed, And surround the heat conduction part 452 outside.
  • holes may be opened on the foam sandwich panel to form accommodating grooves.
  • the heat conducting part 452 may be filled in the accommodating grooves.
  • the skins on both sides of the core material 453 are made of heat conduction materials such as carbon fiber and aluminum foil.
  • the heat of the voice coil 431 can be transferred to the skin through the heat transfer member 420, the heat of the skin is conducted to the heat conduction part 452, and then the heat of the heat conduction part 452 can be conducted to the other side of the skin.
  • the skin can be conducted to the protective shell 412 through the heat transfer element 420 to dissipate heat.
  • the sounding board 450 can also include an avoidance part, which communicates with both sides of the sounding board 450, and the voice coil 431 can pass through Pass the avoidance part and be fixedly connected with the protective shell 412 .
  • the voice coil 431 is directly connected to the protective shell 412 through the heat transfer element 420 , the transfer path is small, and the heat transfer efficiency is high.
  • the recessed part 4131 is in an airtight state.
  • the heat generated when the exciter 430 vibrates can only be dissipated through the protective shell 412; That is, when the protective shell 412 vibrates, it will receive gas resistance in the confined space, resulting in a smaller vibration amplitude of the protective shell 412 .
  • Fig. 59 is a structural schematic diagram 1 when the refrigerator in Fig. 1 is provided with cooling channels.
  • Fig. 60 is a second structural schematic diagram when the refrigerator in Fig. 50 is provided with cooling channels.
  • At least one heat dissipation channel 4132 is provided in the heat insulating member 413.
  • One end of the heat dissipation channel 4132 communicates with the inner wall surface of the recessed part 4131, and the other end of the heat dissipation channel 4132 communicates with the heat insulation channel 4132.
  • the top wall or the bottom wall of the member 413 is connected; the protective shell 412 is provided with cooling holes, and the cooling holes are arranged opposite to the cooling channels 4132 .
  • one end of the heat dissipation channel 4132 communicates with the recessed portion 4131 , and the other end passes through the outer wall of the heat insulating member 413 .
  • the protective case 412 is provided with cooling holes, and the cooling holes are arranged opposite to the cooling channel 4132.
  • the recessed part 4131 communicates with the outside air through the cooling channel 4132, and part of the heat generated by the coil is conducted to the protective cover 412 through the voice coil 431.
  • the other part is conducted to the outside air through the heat dissipation channel 4132, and the heat dissipation effect of the actuator 430 is relatively high.
  • the air in the recessed part 4131 can communicate with the external air through the heat dissipation channel 4132, the air resistance received by the protective shell 412 is small, the vibration amplitude of the protective shell 412 is relatively large, and the sound emitted by the refrigerator Has a higher sound pressure level.
  • the number of heat dissipation channels 4132 can be multiple. In this way, the communication area between the recessed part 4131 and the outside air is larger, which helps more heat to be dissipated through the heat dissipation channels 4132, and the heat dissipation effect is better.
  • the cooling holes can be arranged at any position of the protective shell 412, for example, the cooling holes are arranged on the front side wall of the refrigerator.
  • the heat dissipation holes can be arranged on the top wall or the bottom wall of the protective shell 412, that is, the heat dissipation holes can be hidden at the bottom or top of the refrigerator.
  • the heat dissipation passage 4132 can extend vertically or in an inclined direction, so as to realize convection between the hot air in the recessed part 4131 and the cold air outside the refrigerator by utilizing the chimney effect, and improve the cooling performance of the refrigerator.
  • the rate at which the actuator 430 dissipates heat is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, the heat dissipation passage 4132 can extend vertically or in an inclined direction, so as to realize convection between the hot air in the recessed part 4131 and the cold air outside the refrigerator by utilizing the chimney effect, and improve the cooling performance of the refrigerator.
  • the rate at which the actuator 430 dissipates heat is not limited to realize convection between the hot air in the recessed part 4131 and the cold air outside the refrigerator.
  • the actuator 430 is also exposed to the air through the heat dissipation channel 4132. To prevent foreign matter from entering the cooling channel 4132 .
  • the breathable protection member has better air permeability, and it does not affect the mutual circulation between the hot air in the recessed part 4131 and the cold air outside the refrigerator.
  • the air-permeable protective piece can also prevent external foreign matter, such as water, dust, dander, etc., from entering the concave portion 4131 through the heat dissipation channel 4132, that is, the actuator 430 can be better protected by setting the air-permeable protective piece.
  • the breathable protective member includes a polytetrafluoroethylene layer and a textile layer, and the polytetrafluoroethylene layer and the textile layer are bonded to each other, wherein the polytetrafluoroethylene layer and the textile layer have better air permeability, and the textile layer can Protect the polytetrafluoroethylene layer to prevent foreign matter from clogging the polytetrafluoroethylene layer.
  • the ventilating protective element is detachably connected to the refrigerator, so that the ventilating protective element can be cleaned or replaced regularly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Refrigerator Housings (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un réfrigérateur, comprenant : un excitateur ; et un boîtier externe disposé à l'intérieur d'une région de stockage. Le boîtier externe comprend une couche d'isolation thermique, et un premier boîtier et un second boîtier respectivement fixés aux côtés interne et externe de la couche d'isolation thermique ; la couche d'isolation thermique est disposée à l'intérieur d'une partie de réception ; le second boîtier ferme hermétiquement l'ouverture de la partie de réception, l'excitateur est disposé dans la partie de réception, et l'excitateur est relié au second boîtier afin d'entraîner le second boîtier en vibration et produire un son.
PCT/CN2022/078416 2021-06-11 2022-02-28 Réfrigérateur WO2022257508A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280012959.XA CN116783434A (zh) 2021-06-11 2022-02-28 冰箱

Applications Claiming Priority (8)

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CN202110657398.6A CN115474140A (zh) 2021-06-11 2021-06-11 冰箱
CN202110657398.6 2021-06-11
CN202110656586.7A CN115468355B (zh) 2021-06-11 2021-06-11 冰箱
CN202121316971.9U CN214756783U (zh) 2021-06-11 2021-06-11 冰箱
CN202110656586.7 2021-06-11
CN202121316971.9 2021-06-11
CN202110656587.1 2021-06-11
CN202110656587.1A CN115474134A (zh) 2021-06-11 2021-06-11 冰箱和发声设备

Publications (1)

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WO2022257508A1 true WO2022257508A1 (fr) 2022-12-15

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TW201334575A (zh) * 2011-12-26 2013-08-16 Kyocera Corp 振動裝置、音響產生裝置、揚聲器系統、電子機器
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US20200003486A1 (en) * 2019-06-12 2020-01-02 Lg Electronics Inc. Refrigerator with sound reproducing capability
CN210441523U (zh) * 2019-09-19 2020-05-01 四川虹美智能科技有限公司 一种冰箱
CN112102717A (zh) * 2019-06-17 2020-12-18 海信视像科技股份有限公司 显示装置及可发声屏幕
CN112444046A (zh) * 2019-08-30 2021-03-05 夏普株式会社 冰箱
CN214756783U (zh) * 2021-06-11 2021-11-16 海信视像科技股份有限公司 冰箱
CN214756907U (zh) * 2021-06-11 2021-11-16 海信视像科技股份有限公司 发声设备和激励器
CN215063100U (zh) * 2021-06-17 2021-12-07 海信（山东）冰箱有限公司 冰箱
CN215176308U (zh) * 2021-06-17 2021-12-14 海信（山东）冰箱有限公司 冰箱

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101356851A (zh) * 2006-04-12 2009-01-28 伊莱克斯家用产品公司 家用器具
CN201262504Y (zh) * 2008-09-04 2009-06-24 伊莱克斯(中国)电器有限公司 一种表面发音的冰箱
TW201334575A (zh) * 2011-12-26 2013-08-16 Kyocera Corp 振動裝置、音響產生裝置、揚聲器系統、電子機器
US20150010174A1 (en) * 2011-12-27 2015-01-08 Kyocera Corporation Vibration device, sound generator, speaker system, and electronic device
CN205194745U (zh) * 2014-11-21 2016-04-27 京瓷株式会社 压电元件、声音发生器以及电子设备
US20200003486A1 (en) * 2019-06-12 2020-01-02 Lg Electronics Inc. Refrigerator with sound reproducing capability
CN112102717A (zh) * 2019-06-17 2020-12-18 海信视像科技股份有限公司 显示装置及可发声屏幕
CN112444046A (zh) * 2019-08-30 2021-03-05 夏普株式会社 冰箱
CN210441523U (zh) * 2019-09-19 2020-05-01 四川虹美智能科技有限公司 一种冰箱
CN214756783U (zh) * 2021-06-11 2021-11-16 海信视像科技股份有限公司 冰箱
CN214756907U (zh) * 2021-06-11 2021-11-16 海信视像科技股份有限公司 发声设备和激励器
CN215063100U (zh) * 2021-06-17 2021-12-07 海信（山东）冰箱有限公司 冰箱
CN215176308U (zh) * 2021-06-17 2021-12-14 海信（山东）冰箱有限公司 冰箱

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