CN115468355B

CN115468355B - Refrigerator with a refrigerator body

Info

Publication number: CN115468355B
Application number: CN202110656586.7A
Authority: CN
Inventors: 李奎宝; 高青梅; 王海盈
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2024-03-01
Anticipated expiration: 2041-06-11
Also published as: CN118129376A; CN115468355A; CN118189521A; CN118189522A; CN118066770A

Abstract

The invention provides a refrigerator, which comprises an exciter; the box body is used for storing articles; the box body comprises a heat preservation layer, a first shell and a second shell, wherein the first shell and the second shell are respectively positioned at the inner side and the outer side of the heat preservation layer; the heat preservation towards one side of second casing is formed with the protection chamber, the second casing closing cap the opening in protection chamber, the exciter is located the protection intracavity, just the exciter with the second casing links to each other, is used for driving the second casing vibration and generate sound wave. The refrigerator provided by the invention has good sealing and waterproof performances, and the sound emitted by the refrigerator has a larger sound pressure level and flatter frequency response.

Description

Refrigerator with a refrigerator body

Technical Field

The invention relates to the technical field of sound production equipment, in particular to a refrigerator.

Background

Refrigerators are household appliances commonly used in people's lives for maintaining foods or other objects in a constant low temperature state.

The refrigerator includes heat preservation and sets up first casing, the second casing of the inside and outside both sides of heat preservation, and the heat preservation is used for making the inside temperature of refrigerator maintain in predetermineeing the within range, and first casing pastes and establishes on heat preservation internal face to enclose into the storing district of holding food etc. the second casing pastes and establishes outside the heat preservation for form the protection to the refrigerator. The refrigerator also comprises a display panel and a loudspeaker, wherein the loudspeaker is connected with the display panel or the second shell, a sound outlet hole penetrating through the loudspeaker is formed in the second shell, and sound emitted by the loudspeaker can pass through the sound outlet Kong Chuanbo so as to be listened by a user or realize voice interaction between the user and the refrigerator.

However, the sound outlet is exposed to the air, and the dustproof and waterproof functions of the speaker cannot be realized.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a refrigerator having a high sealing performance, and a sound emitted from the refrigerator has a high sound pressure level and a flat frequency response.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

the embodiment of the invention provides a refrigerator, which comprises an exciter; the box body is used for storing articles; the box body comprises a heat preservation layer, a first shell and a second shell, wherein the first shell and the second shell are respectively positioned at the inner side and the outer side of the heat preservation layer; the heat preservation towards one side of second casing is formed with the protection chamber, the second casing closing cap the opening in protection chamber, the exciter is located the protection intracavity, just the exciter with the second casing links to each other, is used for driving the second casing vibration and generate sound wave.

The third shell is driven to sound through the exciter, no sound outlet is formed in the third shell, the exciter is not exposed in the air, the tightness of the third shell is good, and the third shell has good dustproof and waterproof performances. Meanwhile, the third shell body produces sound for surface vibration, and the sound produced by the refrigerator has flatter frequency response.

In some embodiments, the refrigerator further comprises: the first shell and the third shell are respectively attached to the inner side and the outer side of the heat preservation layer; and one end of the elastic piece is connected with the third shell, the other end of the elastic piece is connected with the second shell, and when the third shell vibrates, the elastic piece can elastically deform along the vibration direction of the third shell.

Namely, the first housing and the third housing form a refrigerator body, and the third housing is an independent component independent of the refrigerator body. And the second shell is connected with the box body through the elastic piece, the resonance system is formed by the mass of the second shell and the compliance of the elastic piece, and the system resonance can promote the low-frequency acoustic response and the low-frequency effect.

In some embodiments, the protection cavity is disposed in the elastic member, the protection cavity penetrates through two ends of the elastic member along the vibration direction of the second housing, the second housing and the third housing cover the ports of the two ends of the elastic member respectively, and the exciter is disposed in the protection cavity. Thus, the exciter can be protected, and foreign matters such as water, dust, filth and the like are prevented from accumulating on the exciter.

In some embodiments, the elastic member is bent in the vibration direction of the second housing, so that the elastic member can have a larger expansion and contraction amount in the vibration direction of the second housing, the elastic member has a larger compliance range, and the sound emitted by the second housing has a better low-frequency effect.

In some embodiments, the surface of the elastic member is provided with a sticky surface, the second shell and the third shell are respectively adhered and fixed with the elastic member, so that the fixing stability is higher, the assembly is easy, and the cost is lower.

In some embodiments, the elastic member is a breathable member. Thus, the air in the protection cavity and the air outside the protection cavity can circulate mutually, the air resistance received by the second shell during vibration is smaller, the vibration amplitude of the second shell is larger, and the sound emitted by the refrigerator has larger sound pressure level.

In some embodiments, the second housing includes a second housing body and a damping layer, the second housing body and the damping layer conforming to each other, the damping layer having a damping greater than a damping of the second housing body. Therefore, the damping of the second shell can be increased, and the influence on the hearing of the second shell caused by obvious frequency response peaks and valleys due to resonance at the resonance frequency due to the fact that the internal damping is too small is avoided.

In some embodiments, a foaming cavity is provided in the second housing body, and the damping layer is filled in the foaming cavity. The strength of the second housing is high.

In some embodiments, the second housing has a resonant position that resonates with the actuator when the actuator vibrates the third housing; the refrigerator further comprises a reinforcing piece, wherein the reinforcing piece is arranged at the resonance position of the second shell and fixedly connected with the second shell.

In this way, by providing the reinforcing member at the resonance position of the second housing, resonance between a certain position of the second housing and the exciter can be avoided, and abnormal sound from the second housing can be avoided.

In some embodiments, the stiffener is fixedly attached to the outer wall surface of the second housing; or the reinforcement piece is fixedly connected with the inner wall surface of the foaming cavity. That is, the reinforcing plate may protrude from the outer wall surface of the second housing or may be provided on the inner wall surface of the foaming chamber so long as it corresponds to the resonance position of the second housing.

In some embodiments, the second housing forms an outer wall surface of the case; or, a concave part is arranged on the outer wall surface of the box body, the elastic piece and the exciter are positioned in the concave part, an assembly gap is formed between the side wall surface of the second shell and the inner wall surface of the concave part, and the second shell and the outer wall surface of the box body are in smooth transition; the elastic piece is connected with the side wall surface or the bottom wall surface of the concave part.

Therefore, the exciter does not protrude out of the outer wall surface of the refrigerator body, the second shell forms part of the outer wall surface of the refrigerator, and the appearance of the refrigerator is simple.

In some embodiments, the recess depth of the recess is less than the thickness of the insulating layer. Therefore, the position of the box body corresponding to the exciter still has the heat preservation layer with the preset thickness, so that the heat exchange between the low-temperature gas in the box body and the high-temperature gas outside the box body is avoided, and the refrigerator still has a good heat preservation effect.

In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, other technical problems that can be solved by the refrigerator provided by the embodiment of the present invention, other technical features included in the technical solutions, and beneficial effects caused by the technical features of the technical solutions, further detailed description will be made in the detailed description of the embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following descriptions are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an actuator position of the refrigerator of FIG. 1;

FIG. 3 is a second cross-sectional view of the actuator position of the refrigerator of FIG. 1;

FIG. 4 is a schematic diagram of the portion A in FIG. 3;

FIG. 5 is a third cross-sectional view of the actuator position of the refrigerator of FIG. 1;

FIG. 6 is a cross-sectional view fourth of the actuator position of the refrigerator of FIG. 1;

FIG. 7 is a fifth cross-sectional view of the actuator position of the refrigerator of FIG. 1;

FIG. 8 is a sixth cross-sectional view of the actuator position of the refrigerator of FIG. 1;

FIG. 9 is a cross-sectional view seventh of the actuator position of the refrigerator of FIG. 1;

FIG. 10 is a schematic view of the second housing of FIG. 1;

FIG. 11 is a cross-sectional view eight of the actuator position of the refrigerator of FIG. 1;

fig. 12 is a schematic diagram of the structure of the portion B in fig. 11.

Reference numerals:

10: a case; 11: a recessed portion; 12: a heat preservation layer; 13: a first housing; 14: a third housing;

20: a second housing; 21: a second housing body; 22: a damping layer;

30: an elastic member; 31: a bending part;

40: an exciter;

50: a reinforcing member;

60: a protective cavity;

l: an assembly gap;

x: vibration direction.

Detailed Description

In order to make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the related art, the refrigerator includes a heat preservation layer and first and second cases disposed at both sides inside and outside the heat preservation layer. Wherein, in order to realize refrigerator sound production or user and refrigerator voice interaction, be equipped with the speaker in the second casing of refrigerator, be equipped with the play sound hole that runs through on the second casing, the sound that the speaker sent can play to the environment through play sound hole. However, since the sound outlet is exposed to the environment, the speaker cannot be provided with a waterproof and dustproof protection function.

In view of this, the refrigerator that this application embodiment provided is equipped with the exciter, and the exciter setting is close to one side of second casing at the heat preservation, and the exciter during operation can drive second casing vibration sound production. Therefore, the surface vibration sounding of the refrigerator is realized under the condition that the integrity of the second shell is not damaged, the protection performance is better, and the sound pressure level of sound is higher.

Fig. 1 is a schematic structural view of a refrigerator according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of an actuator position of the refrigerator of fig. 1.

Referring to fig. 1 and 2, the present embodiment provides a refrigerator, which is a refrigerating apparatus for maintaining food or other objects in a constant low temperature state. The storage area may include a refrigerated area and a frozen area.

The refrigerator includes a cabinet 10 and an exciter 40. The refrigerator body 10 includes a refrigerator body, in which a cavity for storing articles such as a freezing compartment, a refrigerating compartment, a temperature adjusting compartment, etc. may be formed, and a switch door connected to the refrigerator body for closing the freezing compartment, the refrigerating compartment, the temperature adjusting compartment. Of course, the number of the refrigerator doors can be three, and the refrigerator doors can be respectively covered with a freezing cabin, a refrigerating cabin and a temperature regulating cabin.

The refrigerator comprises the heat preservation layer 12, the heat insulation performance of the heat preservation layer 12 is good, and heat exchange between the interior of the refrigerator and the exterior of the refrigerator can be avoided, so that a freezing cabin, a refrigerating cabin and a temperature regulating cabin in the interior of the refrigerator are maintained in a preset temperature range. The heat insulating layer 12 may be made of polyurethane and formed by a foaming process.

The inside of the heat preservation 12 is provided with a first shell 13, and the first shell 13 is respectively arranged on the refrigerator body and the switch door. The first housing 13 may be plastic or the like, is easy to clean, and is resistant to acid and alkali corrosion.

The second housing 20 is provided outside the insulating layer 12, and the second housing 20 may be provided on the refrigerator body, the switch door, or both the refrigerator body and the switch door according to the setting position of the actuator 40. The material of the second casing 20 may be glass, plastic, etc., and the material of the second casing 20 may be the same or different on the refrigerator body and the switch door.

In some embodiments, actuator 40 may be any of an electromagnetic actuator, a magnetostrictive actuator, and a piezoelectric actuator, with greater applicability.

In some embodiments, the number of exciters 40 may be plural, and the plurality of exciters 40 may form a stereo system to optimize the user experience. When the number of the exciters 40 is plural, the exciters 40 may be provided at the refrigerator body and the switch door at the same time. Illustratively, an actuator 40 is provided for each switch door, and an actuator 40 is also provided for the refrigerator body.

In some embodiments, the second housing 20 may be fixedly connected to an outer wall surface of the insulating layer 12, where a receiving portion (not shown) is disposed in the insulating layer 12, and an inner cavity of the receiving portion forms the protection cavity 60, and the exciter 40 is disposed in the receiving portion. The projection shape of the accommodating portion on the second housing 20 may be a relatively regular geometric shape such as a rectangle, a circle, an ellipse, a triangle, or other irregular geometric shapes.

In some embodiments, the recess depth of the accommodating portion may be smaller than the thickness of the insulating layer 12, so that a side of the accommodating portion facing the first housing 13 still has the insulating layer 12 with a certain thickness, so as to avoid dissipation of low temperature inside the refrigerator through the accommodating portion, and the insulating effect of the refrigerator is better.

The second casing 20 covers the opening of the accommodating portion, the portion of the second casing 20 connected to the heat insulation layer 12 still maintains a fixed state, the portion of the second casing 20 corresponding to the opening of the accommodating portion forms a vibrating element, and the exciter 40 can drive the portion of the second casing 20 to vibrate and sound.

Thus, the second housing 20 is not perforated, the integrity of the second housing 20 is not damaged, and the second housing 20 has good sealing and protecting properties for the insulating layer 12, the exciter 40, and the like. And the surface vibration sounding has larger sound pressure level and flatter frequency response and better tone quality compared with the sounding of a loudspeaker.

In some embodiments, the refrigerator further includes a third housing 14, the first housing 13 and the third housing 14 are respectively attached to the inner side and the outer side of the heat insulation layer 12, and at this time, the second housing 20 and the refrigerator body 10 are independent from each other, and a space between the second housing 20 and the third housing 14 forms a protection cavity 60.

In some embodiments, the refrigerator further includes an elastic member 30, one end of the elastic member 30 is connected to the third housing 14, the other end of the elastic member 30 is connected to the second housing 20, and an exciter 40 is connected to the second housing 20 for driving the second housing 20 to vibrate and sound relative to the refrigerator body 10.

In this way, when the exciter 40 vibrates, the elastic member 30 can correspondingly stretch or contract along the vibration direction of the third casing 14, so as to drive the second casing 20 to vibrate and sound. That is, the refrigerator can realize surface vibration sounding, and the sound emitted by the refrigerator has relatively flat frequency correspondence.

Meanwhile, the weight of the actuator 40 is greater than that of the second housing 20. Thus, when the exciter 40 is fixedly connected with the second housing 20 as a whole, the equivalent vibration mass of the second housing 20 is increased, which is helpful for the second housing 20 to excite low-frequency sound and meets the low-frequency sound design requirement of the sound generating device.

In some embodiments, the elastic member 30 has elasticity, which can buffer the vibration of the second housing 20, and the vibration of the actuator 40 is transferred to the second housing 20 through the elastic member 30, and the second housing 20 can have a larger vibration amplitude.

In some embodiments, when the second housing 20 has a larger vibration amplitude, the amount of air pushed when the second housing 20 vibrates becomes larger, also contributing to the better low frequency sound emitted from the second housing 20.

Referring to fig. 2, in some embodiments, to form a protection for the actuator 40, a protection cavity 60 is disposed in the elastic member 30, the protection cavity 60 penetrates through two ends of the elastic member 30 along the vibration direction of the second housing 20, and the second housing 20 and the third housing 14 respectively cover the ports of the two ends of the protection cavity 60, and the actuator 40 is located in the protection cavity 60. In this way, the elastic member 30 can provide protection for the actuator 40 from foreign substances such as water, dust, etc. deposited on the actuator 40.

In some embodiments, the elastic member 30 may be a rubber member that is elastic and is capable of providing protection for the actuator 40.

It is understood that the compliant range of the elastic member 30 refers to a range in which the force to which the elastic member 30 is subjected is linearly proportional to the telescopic distance thereof. When the compliance range of the elastic member 30 is exceeded, the elastic member 30 stretches less, which easily results in nonlinear distortion of the sound emitted from the second housing 20.

To improve the compliance range of the elastic member 30, the thickness of the elastic member 30 in the vibration direction X may be increased.

Fig. 3 is a second cross-sectional view of the actuator position of the refrigerator of fig. 1. Fig. 4 is a schematic structural diagram of a portion a in fig. 3.

In order to improve the compliance of the elastic member 30, referring to fig. 3 and 4, in some embodiments, the elastic member 30 may be further bent in the vibration direction X of the second housing 20. I.e. the elastic member 30 may have a bellows-like structure.

Wherein, the number of bending times of the elastic member 30 may be one or more. The elastic member 30 includes a bending portion 31, and the bending portion 31 has a U-shaped or V-shaped cross-section, and two ends of the bending portion 31 are connected to the third housing 14 and the second housing 20, respectively. Wherein the bending portion 31 may protrude toward the outside of the shielding cavity 60.

In some embodiments, FIG. 5 is a cross-sectional view III of the position of the actuator 40 of the refrigerator of FIG. 1. Referring to fig. 5, the bending portion 31 may also protrude toward the inner side of the protection cavity 60.

In this way, the elastic member 30 can be deformed in a stretching manner along the vibration direction X by approaching or separating the two ends of the bending portion 31 from each other and compressing or stretching the bending portion 31 itself, so that the elastic member 30 has a larger compliance range, can allow the second housing 20 to have a larger vibration amplitude, and can avoid nonlinear distortion of the sound emitted from the second housing 20.

In some embodiments, the surface of the elastic member 30 has an adhesive surface, and the second housing 20 and the third housing 14 are respectively adhered and fixed to the elastic member 30.

In some embodiments, the elastic member 30 may be a hydrocolloid, a masking gel, an acrylic gel, etc. with low cost.

In some embodiments, the guard chamber 60 may be divided into closed chambers. In order to effectively increase the vibration amplitude of the second housing 20, in some embodiments, the elastic member 30 is a gas permeable member, so that the gas on both inner and outer sides of the protection cavity 60 can flow through each other through the elastic member 30.

When the second housing 20 moves toward the side close to the case 10, the volume of the shielding chamber 60 becomes small, and the gas in the shielding chamber 60 is pressed by the second housing 20 and flows out toward the outside of the shielding chamber 60. When the second housing 20 moves toward a side away from the case 10, the volume of the shielding chamber 60 becomes large, and the gas outside the shielding chamber 60 can flow toward the inside of the shielding chamber 60. In this way, the second housing 20 receives less air resistance, the second housing 20 can have a larger vibration amplitude, and the sound emitted from the refrigerator has a larger sound pressure level.

In some embodiments, the elastic member 30 may be foam, double-sided adhesive, or the like. The foam material has good elasticity and has breathable air holes so as to realize the mutual communication of the air at the inner side and the outer side of the protection cavity 60. In some embodiments, the double-sided adhesive may have a compliance in the range of 0.3mm to 1mm.

In some embodiments, the second housing 20 may be a steel plate, a glass plate, or the like. It will be appreciated that when the second housing 20 is a steel or glass plate, the second housing 20 is stiffer and less damped, such that the second housing 20 is prone to a sharp response at the resonant frequency.

Fig. 6 is a cross-sectional view of an actuator position of the refrigerator of fig. 1. Fig. 7 is a fifth cross-sectional view of the actuator position of the refrigerator of fig. 1. Fig. 8 is a cross-sectional view six of the actuator position of the refrigerator of fig. 1. Fig. 9 is a cross-sectional view seven of an actuator position of the refrigerator of fig. 1.

Referring to fig. 3 to 9, in some embodiments, the second housing 20 includes a second housing body 21 and a damping layer 22, the second housing body 21 and the damping layer 22 are attached to each other, and the damping layer 22 has a damping greater than that of the second housing body 21.

By providing the damping layer 22, the damping of the second housing 20 becomes larger, and the influence of the second housing 20 on the hearing due to the influence of obvious frequency response peaks and valleys caused by resonance at the resonance frequency due to the excessively small internal damping is avoided.

In some embodiments, referring to fig. 6 and 7, the damping layer 22 may be a honeycomb sandwich panel, a foam sandwich panel, a wood sandwich panel, or an acrylic panel, which is low cost and easy to obtain. At this time, the damping layer 22 may be disposed at a side of the second housing 20 close to the actuator 40, or at a side of the second housing 20 facing away from the actuator 40.

In some embodiments, referring to fig. 6, when the damping layer 22 is disposed on a side of the second housing 20 adjacent to the actuator 40, the actuator 40 may be directly coupled to the damping layer 22.

In some embodiments, referring to fig. 3, 5 and 7, a relief notch may be provided on the damping layer 22, and the exciter 40 is located in the relief notch and connected to the second housing body 21.

In some embodiments, referring to fig. 3 to 5 and fig. 8 and 9, the damping layer 22 may be a foam material, and the damping layer 22 is illustratively made of polyurethane or the like and is formed by a foaming process. At this time, the damping layer 22 may be filled with fibers or the like to increase the damping of the damping layer 22.

In some embodiments, a foaming cavity is disposed in the second housing body 21, and the damping layer 22 is filled in the foaming cavity, so that the second housing body 21 surrounds the damping layer 22, and the strength of the second housing 20 is higher, so that the damping layer 22 is prevented from being broken.

In some embodiments, the second housing 20 has a resonance position, and when the exciter 40 drives the second housing 20 to vibrate, the resonance position of the second housing 20 resonates with the exciter 40, so that vibration amplitudes at different positions of the second housing 20 are different, and the second housing 20 emits abnormal sounds. It will be appreciated that when the exciter 40 vibrates the second housing 20, the vibration position of the second housing 20 is annular and surrounds the outer periphery of the exciter 40.

The resonance position of the second housing 20 is related to the material, structure, etc. of the second housing 20, and the resonance position of the second housing 20 may be obtained through simulation, which is not limited in this embodiment.

Fig. 10 is a schematic structural view of the second housing of fig. 1. In some embodiments, referring to fig. 5 and 8 to 10, the refrigerator further includes a reinforcing member 50, wherein the reinforcing member 50 is disposed at a resonance position of the second housing 20 and fixedly connected to the second housing 20, so that different positions of the second housing 20 may have approximately the same intensity, and amplitudes of the positions of the second housing 20 may be approximately the same, and the second housing 20 may be integrally translated when vibrating, thereby preventing the second housing 20 from emitting abnormal sounds.

In some embodiments, the stiffener 50 may be plastic, metal, or the like. Illustratively, the stiffener 50 may be aluminum, stainless steel, or the like. Depending on the material of the reinforcing member 50 and the second housing 20, the reinforcing member 50 may be fixed to the second housing 20 by bonding, welding, or the like.

In some embodiments, when the second housing 20 is a metal piece, the stiffener 50 may also be formed by stamping.

In some embodiments, the stiffener 50 may be annular in shape and circumscribe the actuator 40. In some embodiments, the reinforcement member 50 may also be in a block shape, and the number of the reinforcement members 50 is plural, and the plural reinforcement members 50 are disposed at intervals along the circumferential direction of the actuator 40.

In some embodiments, the stiffener 50 is fixedly connected to the outer wall surface of the second housing 20, and the stiffener 50 may be disposed on a side of the second housing 20 that is closer to the actuator 40 or on a side that is farther from the actuator 40. In this case, the second housing 20 may be a steel plate or a glass plate.

In some embodiments, when the second housing 20 has a foaming chamber, the reinforcement 50 may be provided on the outer wall surface of the second housing body 21 (as shown in fig. 10), or the reinforcement 50 may be fixedly connected to the inner wall surface of the foaming chamber (as shown in fig. 5).

At this time, the height of the stiffener 50 along the vibration direction X of the second housing 20 is smaller than or equal to the cavity height of the foaming cavity along the vibration direction X of the second housing 20, i.e. the stiffener 50 is prevented from damaging the integrity of the second housing body 21, so as to avoid the stiffener 50 from affecting the strength of the second housing 20, resulting in a change of the resonance position of the second housing 20.

Fig. 11 is a cross-sectional view eight of the actuator position of the refrigerator of fig. 1. Fig. 12 is a schematic diagram of the structure of the portion B in fig. 11.

Referring to fig. 11 and 12, in some embodiments, a recess 11 is formed on an outer wall surface of the case 10, the elastic member 30 and the actuator 40 are located in the recess 11, and an assembly gap L is formed between a side wall surface of the second housing 20 and an inner wall surface of the recess 11. In this way, the second housing 20 does not collide with the inner wall surface of the recess 11 during vibration, and noise emission from the second housing 20 is avoided.

In some embodiments, the size of the assembly gap L may be set as desired, for example, 3mm-5mm.

In some embodiments, the shape of the second housing 20 is adapted to the shape of the recess 11, which may be a plate-shaped structural member with a regular shape such as a rectangular plate, a circular plate, or other irregularly shaped structural members.

The second housing 20 may have a height difference from the outer wall surface of the case 10. In some embodiments, the second housing 20 and the outer wall surface of the case 10 are in smooth transition, so that the second housing 20 may form the outer wall surface of the case 10, the outer wall surface of the case 10 is smoother, and the appearance of the refrigerator is simpler.

In some embodiments, the elastic member 30 is connected to a side wall surface or a bottom wall surface of the recess 11, as needed. Of course, in order to avoid the second housing 20 from being skewed during the vibration process, one of the recess 11 and the second housing 20 may be provided with a guiding groove, and the other one is provided with a protruding guiding portion, and the guiding portion extends into the guiding groove and is movable relative to the guiding groove.

In some embodiments, the stiffener 50 may act as a guide, and correspondingly, a guide slot into which the guide may extend within the recess 11.

In some embodiments, the case 10 has a thermal insulation layer 12, and the recess 11 has a recess depth smaller than the thickness of the thermal insulation layer 12. In this way, the thermal insulation layer 12 with a preset thickness is still provided at the position of the box 10 corresponding to the exciter 40, so that heat exchange between the low-temperature gas inside the box 10 and the high-temperature gas outside the box 10 is avoided, and the refrigerator still has a good thermal insulation effect.

In some embodiments, the second housing 20 constitutes an outer wall surface of the case 10. Illustratively, when the actuator 40 is disposed on the opening and closing door corresponding to the refrigerator compartment, the second housing 20 is disposed outside the third housing 14 of the opening and closing door, and the second housing 20 constitutes an outer wall surface of the opening and closing door.

In some embodiments, the second housing 20 is smoothly transited with the outer wall surface of the other switch door to prevent the switch door from protruding out of the other switch door. At this time, the thickness of the insulation layer of the switch door is smaller than that of the insulation layers of other switch doors.

In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A refrigerator, comprising:

an exciter;

the box body is used for storing articles;

the box body comprises a heat preservation layer, a first shell, a second shell and a third shell, wherein the first shell and the third shell are respectively stuck to the inner side and the outer side of the heat preservation layer, and the second shell is positioned on one side, away from the heat preservation layer, of the third shell;

the space between the second shell and the third shell forms a protection cavity, the second shell and the third shell respectively cover ports at two ends of the protection cavity, the exciter is positioned in the protection cavity, and the exciter is connected with the second shell and used for driving the second shell to vibrate and generate sound waves;

and one end of the elastic piece is connected with the third shell, the other end of the elastic piece is connected with the second shell, and when the third shell vibrates, the elastic piece can elastically deform along the vibration direction of the third shell.

2. The refrigerator of claim 1, wherein the protection cavity is provided in the elastic member, the protection cavity penetrates through both ends of the elastic member in a vibration direction of the second housing, the second housing and the third housing cover ports of both ends of the elastic member, respectively, and the exciter is located in the protection cavity.

3. The refrigerator of claim 2, wherein the elastic member is bent in a vibration direction of the second housing.

4. The refrigerator of claim 2, wherein the elastic member has an adhesive surface on a surface thereof, and the second housing and the third housing are respectively adhered and fixed to the elastic member.

5. The refrigerator of claim 2, wherein the elastic member is a ventilation member.

6. The refrigerator of any one of claims 1-5, wherein the second housing comprises a second housing body and a damping layer, the second housing body and the damping layer are attached to each other, and the damping layer has a damping greater than that of the second housing body.

7. The refrigerator of claim 6, wherein a foaming chamber is provided in the second housing body, and the damping layer is filled in the foaming chamber.

8. The refrigerator of claim 7, wherein the second housing has a resonance position, and the resonance position of the second housing resonates with the exciter when the exciter vibrates the second housing;

the refrigerator further comprises a reinforcing piece, wherein the reinforcing piece is arranged at the resonance position of the second shell and fixedly connected with the second shell.

9. The refrigerator according to any one of claims 2 to 5, wherein,

the second shell forms the outer wall surface of the box body;

or, a concave part is arranged on the outer wall surface of the box body, the elastic piece and the exciter are positioned in the concave part, an assembly gap is formed between the side wall surface of the second shell and the inner wall surface of the concave part, and the second shell and the outer wall surface of the box body are in smooth transition; the elastic piece is connected with the side wall surface or the bottom wall surface of the concave part.