CN214756783U - Refrigerator with a door - Google Patents

Abstract

The utility model provides a refrigerator, which comprises a refrigerator body, wherein the refrigerator body comprises an inner container, a protective shell and a heat insulation piece, the heat insulation piece is arranged between the inner container and the protective shell, the heat insulation piece is provided with a concave part, and the opening of the concave part is sealed by the protective shell; the heat transfer element is connected with the protective shell; the exciter, the exciter includes the voice coil loudspeaker voice coil that can vibrate, the voice coil loudspeaker voice coil with heat transfer member links to each other, with the vibration transmission of voice coil loudspeaker voice coil extremely the protecting crust, and drive the protecting crust vibration sound production, just the heat accessible that the voice coil loudspeaker voice coil generated heat transfer member conduction extremely on the protecting crust. The utility model provides a refrigerator can form effective protection to the exciter, and the radiating effect of exciter is better.

Description

Refrigerator with a door

Technical Field

The utility model relates to a sound production equipment technical field especially relates to a refrigerator.

Background

The refrigerator is a daily electric appliance commonly used in life of people and is used for keeping food or other articles in a constant low-temperature state.

The refrigerator includes a cabinet enclosing a freezing area and a storage area for storing items such as food. The box body comprises a heat insulation piece so as to maintain the interior of the refrigerating area and the freezing area within a preset temperature range. In order to protect the heat insulation piece, the inner side of the heat insulation piece is provided with an inner container, and the outer side of the heat insulation piece is provided with a protective shell.

The refrigerator is also provided with a loudspeaker which is also arranged between the protective shell and the inner container so as to form protection for the loudspeaker through the protective shell. Meanwhile, the protective shell is provided with a sound outlet hole, and sound generated by vibration of the cone basin driven by the voice coil in the loudspeaker can be transmitted through the sound outlet hole so as to be listened by a user or realize voice interaction between the user and the refrigerator.

However, in order to protect the speaker, the size of the sound outlet hole cannot be too large, which results in that the heat generated when the speaker vibrates cannot be dissipated in time, and the temperature of the speaker is high.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the embodiment of the present invention provides a refrigerator, which can form effective protection for an exciter, and the heat dissipation effect of the exciter is better.

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

the embodiment of the utility model provides a refrigerator, which comprises a refrigerator body, wherein the refrigerator body comprises a refrigerator body, the refrigerator body comprises an inner container, a protective shell and a heat insulation piece, the heat insulation piece is arranged between the inner container and the protective shell, the heat insulation piece is provided with a concave part, and an opening of the concave part is sealed by the protective shell; the heat transfer element is connected with the protective shell; the exciter comprises a voice coil capable of vibrating, the voice coil is connected with the heat transfer element to transmit the vibration of the voice coil to the protective shell and drive the protective shell to vibrate and sound, and the heat generated by the voice coil can be transmitted to the protective shell through the heat transfer element.

This application embodiment drives the protecting crust vibration sound production through the voice coil loudspeaker voice coil promptly, need not to set up out the sound hole on the protecting crust, and the exciter does not expose in the air, and the integrality of protecting crust is better, has good dustproof and waterproof performance. At the same time, planar sound production has a greater sound pressure level and a flatter frequency response relative to loudspeaker sound production.

And the voice coil loudspeaker voice coil passes through heat transfer spare and links to each other with the protecting crust, and the heat that generates during the vibration of voice coil loudspeaker voice coil can be conducted to the protecting crust through heat transfer spare on, at this moment, can take place heat exchange between protecting crust and the air to the cooling of messenger's protecting crust has also realized just also cooling down the heat dissipation of voice coil loudspeaker voice coil, avoids the voice coil loudspeaker voice coil overheated, leads to the vibration range of voice coil loudspeaker voice coil to diminish.

In some embodiments, the heat transfer element is a thermally conductive material. Therefore, the heat exchange quantity between the voice coil and the heat transfer element is large, and the heat dissipation effect of the voice coil is good.

In some embodiments, the voice coil is a heat conductive material to improve the heat exchange amount between the voice coil and the heat conductive member, and the heat dissipation effect of the voice coil is better.

In some embodiments, the heat transfer member is a viscous heat-conducting adhesive, which facilitates assembly between the voice coil and the casing, and has high fixing stability.

In some embodiments, the refrigerator further comprises a support member having a plug part with which the voice coil is plugged; the communication part is communicated with the plug part and penetrates through one side, facing the protective shell, of the support part, and the heat transfer part is filled in the plug part and the communication part.

Like this, between support piece and the protecting crust, all can bond fixedly through heat transfer piece between protecting crust and the voice coil loudspeaker voice coil, for the fixed mode that voice coil loudspeaker voice coil and protecting crust directly link to each other, area of contact between support piece and the protecting crust is great, and support stability is higher. And the heat that the voice coil loudspeaker voice coil produced can also be transmitted to the protecting crust through the heat-transfer spare, and the radiating effect is better.

In some embodiments, a radial dimension of the communication portion near an end of the shielding shell is larger than a radial dimension of the insertion portion far from the end of the shielding shell. Therefore, the bonding area between the supporting piece and the protective shell is large, and the fixing stability between the supporting piece and the protective shell is high.

In some embodiments, the refrigerator further comprises a sound-emitting plate attached to one side of the protective shell corresponding to the recessed portion, the exciter is fixedly connected with the sound-emitting plate, and the damping of the sound-emitting plate is greater than that of the protective shell. Therefore, the rigidity of the protective shell can be improved, the frequency range of sound emitted by the protective shell can be enlarged, high-frequency sharp sound is avoided, and sound distortion caused by overlarge fluctuation of frequency response of the second shell is avoided.

In some embodiments, the sound board includes a sound board body and a heat conduction portion for conducting heat, the voice coil is connected to the heat conduction portion, and the heat transfer members are respectively disposed between the shield case and the heat conduction portion and between the heat conduction portion and the voice coil. Therefore, under the condition of optimizing the sound emitted by the protective shell, the voice coil can also realize heat dissipation through the sound-emitting plate.

In some embodiments, the sound board is a sandwich board, the sound board comprises a core material and skins, and the skins are attached to two opposite sides of the core material; the covering is a heat conducting material, and the heat conducting portion is arranged at the position, corresponding to the voice coil, of the core material.

The sandwich board is low in cost and easy to obtain, the rigidity of the protective shell can be improved, and the tone quality of sound emitted by the protective shell can be optimized. Simultaneously, the covering of core and voice coil loudspeaker voice coil corresponding position department, core both sides is heat conduction material spare, and the heat of voice coil loudspeaker voice coil can be conducted to the sounding board on, helps the voice coil loudspeaker voice coil heat dissipation cooling.

In some embodiments, the sound board comprises an avoiding part, the avoiding part is communicated with two sides of the sound board, and the voice coil can pass through the avoiding part and is fixedly connected with the protective shell. Therefore, the voice coil can directly exchange heat with the protective shell, and the heat dissipation effect is good.

In some embodiments, the protective shell is a thermally conductive material. Therefore, the heat exchange quantity between the protective shell and the air is large, the heat conducted to the protective shell by the voice coil can be dissipated in time, and the heat dissipation effect of the voice coil is good.

In some embodiments, at least one heat dissipation channel is arranged in the heat insulation piece, one end of the heat dissipation channel is communicated with the inner wall surface of the concave part, and the other end of the heat dissipation channel is communicated with the top wall surface or the bottom wall surface of the heat insulation piece; the protective shell is provided with heat dissipation holes which are arranged opposite to the heat dissipation channel; the refrigerator is further provided with an air-permeable guard for preventing foreign substances from entering the heat dissipation channel. The radiating hole department is equipped with ventilative guard piece, and ventilative guard piece's air permeability is better, like this, through ventilative guard piece, can realize the circulation of air between depressed part and the outside air, optimizes the radiating effect on the one hand, avoids the exciter overheated, and on the other hand, the protective housing vibration in-process can not receive the effect of air resistance, and the vibration range of protective housing is great. Meanwhile, the air-permeable protection piece can isolate foreign matters such as water and dust outside the heat dissipation channel, and the protection performance is good.

In some embodiments, the ventilation protection part comprises a polytetrafluoroethylene layer and a textile layer, the polytetrafluoroethylene layer and the textile layer are attached to each other, the ventilation performance is good, foreign matters such as water and dust can be prevented from entering the heat dissipation channel, and the protection performance is good.

In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions, further detailed descriptions will be made in specific embodiments for other technical problems that can be solved by the refrigerator provided by the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic view of the actuator of FIG. 1 coupled to a protective housing;

FIG. 3 is a schematic diagram of the actuator of FIG. 2;

FIG. 4 is a first schematic structural view of the supporting member shown in FIG. 3;

FIG. 5 is a second schematic structural view of the supporting member shown in FIG. 3;

FIG. 6 is a cross-sectional view of the support member of FIGS. 4 and 5;

FIG. 7 is a first schematic structural view illustrating the protective shell of FIG. 1 having a reinforcing plate;

FIG. 8 is a schematic view of the stiffener structure of FIG. 7 with the honeycomb sandwich panel installed;

FIG. 9 is a second schematic structural view of the protective shell of FIG. 1 with a reinforcing plate;

FIG. 10 is a first schematic structural view illustrating the refrigerator of FIG. 1 with a heat dissipation channel;

fig. 11 is a second schematic structural diagram of the refrigerator in fig. 1 when a heat dissipation channel is provided.

Reference numerals:

10: a box body; 11: an inner container; 12: a protective shell; 13: a thermal insulation member; 131: a recessed portion; 132: a heat dissipation channel;

20: a heat transfer member;

30: an exciter; 31: a voice coil; 32: elastic wave;

40: a support member; 41: a plug-in part; 42: a communicating portion;

50: a sound board; 51: a sound board body; 52: a heat conducting portion; 53: a core material.

Detailed Description

In order to make the above objects, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the related art, a refrigerator has a demand for sounding or voice interaction with a user. For example, when a user cooks a meal, the user can inquire a menu through a refrigerator or play a television play through the refrigerator, and at the moment, the refrigerator can receive a voice instruction of the user and play information to be inquired by the user through voice.

Correspondingly, a loudspeaker is arranged in the refrigerator, and sound production of the refrigerator is achieved through the loudspeaker. In order to protect the speaker, the speaker is usually disposed between the protective casing and the inner container of the refrigerator, and a sound hole is formed in the protective casing to facilitate sound transmission. In order to protect the speaker, the size of the sound outlet hole cannot be too large, so that foreign matters such as water and dust are prevented from being deposited on the speaker. However, this also results in that the heat generated by the speaker cannot be dissipated in time, resulting in a temperature rise of the speaker, easily resulting in a reduction in amplitude of the speaker, a reduction in sound pressure level of the speaker, and a higher temperature of the heat insulating member at a position corresponding to the speaker, which also results in a higher power consumption of the refrigerator and a lower cooling efficiency.

In view of this, the refrigerator provided in the embodiment of the present application is provided with the exciter, and the voice coil in the exciter is connected to the protective casing through the heat transfer element easy to conduct heat, so as to push the protective casing to vibrate and generate sound, and compared with a loudspeaker which generates sound, the sound pressure level of the sound generated by the protective casing is better. Simultaneously, the integrality of protecting crust is better, can form effectual protection to the exciter, and the heat that the voice coil loudspeaker voice coil vibration generated can in time pass to the protecting crust through heat transfer spare on, the protecting crust can carry out the heat exchange with the air and cool down, like this, the heat of voice coil loudspeaker voice coil can continue to conduct to the protecting crust on to realize the heat dissipation cooling of voice coil loudspeaker voice coil.

Fig. 1 is a schematic structural diagram of a refrigerator provided by an embodiment of the present invention. Fig. 2 is a schematic structural view of the actuator of fig. 1 connected to a shield case. Fig. 3 is a schematic structural view of the actuator of fig. 2.

Referring to fig. 1 to 3, an embodiment of the present invention provides a refrigerator, which includes a box body 10, the box body 10 includes an inner container 11, a protective shell 12 and a heat insulating member 13, the heat insulating member 13 is disposed between the inner container 11 and the protective shell 12, the heat insulating member 13 is provided with a concave portion 131, an opening of the concave portion 131 is sealed by the protective shell 12; a heat transfer member 20, the heat transfer member 20 being connected to the protective casing 12; and an actuator 30, wherein the actuator 30 comprises a voice coil 31 capable of vibrating, the voice coil 31 is connected with the heat transfer member 20 so as to transmit the vibration of the voice coil 31 to the protective shell 12 and drive the protective shell 12 to vibrate and generate sound, and the heat generated by the voice coil 31 can be transmitted to the protective shell 12 through the heat transfer member 20.

In particular, a refrigerator is a refrigerating device for storing articles, which is used to provide a constant low temperature environment for the articles stored therein. The refrigerator may have a freezing compartment, a refrigerating compartment, a temperature-adjusting compartment, etc. according to the use requirements. The refrigerator comprises a refrigerator body and an opening and closing door, wherein the freezing compartment, the refrigerating compartment and the temperature adjusting compartment are formed on the refrigerator body, and the opening and closing door is connected with the refrigerator body and used for sealing the freezing compartment, the refrigerating compartment and the temperature adjusting compartment. Of course, the number of the refrigerator doors can be three, and the refrigerator doors are respectively covered on the freezing compartment, the refrigerating compartment and the temperature adjusting compartment.

The refrigerator comprises the heat insulation piece 13, the heat insulation performance of the heat insulation piece 13 is good, heat exchange between the inside of the refrigerator and the outside of the refrigerator can be avoided, and therefore the freezing compartment, the refrigerating compartment and the temperature adjusting compartment inside the refrigerator are all maintained within a preset temperature range. The heat insulating member 13 may be made of polyurethane and formed by a foaming process.

The inner side of the heat insulation piece 13 is provided with an inner container 11, and the inner container 11 is respectively arranged on the refrigerator body and the switch door. The inner container 11 can be made of plastic and the like, is easy to clean, and is resistant to acid and alkali corrosion.

The protective case 12 is respectively provided on the refrigerator body and the opening and closing door. The material of the protective shell 12 may be glass, plastic, etc. That is, the protective case 12 on the refrigerator body may be glass, plastic, etc. The material of the protective shell 12 on the opening and closing door can be glass, plastic and the like. The materials of the refrigerator body and the protective shell 12 on the switch door can be the same or different.

In order to increase the heat exchange amount between the protective shell 12 and the air, in some embodiments, the protective shell 12 is a heat conductive material, such as a metal member like steel, which has good heat conductivity, is easy to exchange heat with the air, and has high strength and high protective performance.

In some embodiments, the number of actuators 30 may be multiple, and multiple actuators 30 may form a stereo system, optimizing the user experience. When the number of the exciter 30 is plural, the exciter 30 may be provided at both the refrigerator body and the opening and closing door. Illustratively, each of the opening and closing doors is provided with an exciter 30, and the refrigerator body is also provided with an exciter 30. The present embodiment is described by taking an example in which the actuator 30 is provided on the opening/closing door.

In some embodiments, the thermal shield 13 is provided with a recess 131, and the actuator 30 is disposed in the recess 131, and the opening of the recess 131 faces one side of the shield case 12. Thus, the shield case 12 is fixedly connected to the heat insulating member 13, and the exciter 30 is connected to a portion of the shield case 12 corresponding to the recess 131 to drive the portion of the shield case 12 to vibrate and sound.

Thus, the integrity of the enclosure 12 is not compromised, the actuator 30 is not exposed to air, and the protective properties of the enclosure 12 are better. Meanwhile, compared with the sound emitted by a loudspeaker in the related art, the sound emitted by the surface vibration of the embodiment has larger sound pressure level and flatter frequency response, and the sound quality is better.

In some embodiments, the depth of the recess 131 is less than the thickness of the thermal shield 13. Thus, the heat insulation piece 13 with the preset thickness is still arranged between the bottom wall surface of the concave part 131 and the inner container 11, so that the cold air in the refrigerator is prevented from being dissipated through the concave part 131, and the heat insulation performance of the heat insulation piece 13 is better.

In some embodiments, actuator 30 includes a voice coil 31, a damper 32, a coil, and a magnetic assembly. The magnetic component comprises a first magnetic conduction piece, a second magnetic conduction piece and a magnet, wherein the first magnetic conduction piece can be T iron or U iron, and the second magnetic conduction piece is washer. Taking the U-shaped iron as an example, the magnet and the washer are both positioned in a cavity enclosed by the U-shaped iron, a magnetic air gap is arranged between the outer wall surfaces of the magnet and the washer and the inner wall surface of the U-shaped iron, the voice coil 31 extends into the magnetic air gap and encloses the magnet and the washer, and the magnetic assembly is used for providing a stable magnetic field in the magnetic air gap. A variable control signal may be input into the coil to generate the alternating magnetic field. The coil can reciprocate along the circumferential direction in the superimposed magnetic field of the alternating magnetic field and the stable magnetic field.

The damper 32 surrounds the voice coil 31, for example, the damper 32 may be connected to an outer wall surface of the voice coil 31. The damper 32 is an elastic member and can elastically deform in response to the vibration of the voice coil 31, thereby preventing the voice coil 31 from deflecting during the reciprocating movement.

In some embodiments, the voice coil 31 is fixedly connected to the casing 12 through the heat transfer member 20, and the heat transfer member 20 is a heat conductive material.

The material of the voice coil 31 may be kraft paper, aramid, or the like, which is well known to those skilled in the art. In some embodiments, the voice coil 31 is a heat conductive material, such as a metal member, for example, aluminum, which has a smaller weight and a higher heat conductivity, so as to increase the heat exchange amount between the heat transfer member 20 and the voice coil 31.

Therefore, heat generated by the voice coil 31 can be effectively transferred to the heat transfer element 20, the heat transfer element 20 is heated, heat exchange is carried out between the heat transfer element 20 and the protective shell 12, the heat on the heat transfer element 20 is transferred to the protective shell 12, the protective shell 12 is in contact with air and is cooled by heat exchange with the air, and then the temperature of the heat transfer element 20 is reduced, so that the heat of the voice coil 31 can be continuously transferred to the heat transfer element 20, and the heat dissipation effect of the voice coil 31 is better.

The heat transfer member 20 may be a metal member such as a bolt, a screw, etc. In some embodiments, the heat transfer member 20 has a viscous heat conductive paste, so that the voice coil 31 can be fixed to the shield case 12 by applying the heat conductive paste between the voice coil 31 and the shield case 12, which is easy to assemble and has high fixing stability.

The heat transfer member 20 may be silicone heat conductive adhesive, polyurethane heat conductive adhesive, or the like.

Fig. 4 is a first structural schematic diagram of the supporting member in fig. 3. Fig. 5 is a second structural schematic diagram of the supporting member in fig. 3. Fig. 6 is a cross-sectional view of the support member of fig. 4 and 5.

Referring to fig. 4 to 6, considering that the voice coil 31 is a thin-walled cylindrical structure and the end surface area of the voice coil 31 is small, in some embodiments, the refrigerator further includes a support 40, the support 40 has an insertion portion 41, and the voice coil 31 is inserted into the insertion portion 41; and a communication portion 42, wherein the communication portion 42 is communicated with the plug portion 41, the communication portion 42 penetrates through one side of the support member 40 facing the protective shell 12, and the heat transfer member 20 is filled in the plug portion 41 and the communication portion 42.

The supporting member 40 may have a cylindrical structure, or may have a cylindrical structure as shown in fig. 4 to 6. The insertion part 41 is provided on one of the end surfaces of the support member 40, and the voice coil 31 and the insertion part 41 are inserted into each other and fixed by bonding through the heat transfer member 20, so that the fixing stability between the voice coil 31 and the support member 40 is high. And the voice coil 31 and the heat transfer member 20 are in contact with each other, the heat on the voice coil 31 can be efficiently conducted to the heat transfer member 20.

The other end face of the support member 40 opposite to the end face of the voice coil 31 is in contact with the shield case 12, and the contact area between the support member 40 and the shield case 12 is large and the support stability is high.

The support member 40 is further provided with a communication portion 42, one end of the communication portion 42 is communicated with the insertion portion 41, and the other end penetrates through the end surface of the support member 40, so that the heat transfer member 20 can flow into the communication portion 42 through the insertion portion 41 and can be adhered and fixed with the support member 40 and the protective shell 12. At this time, the heat transfer member 20 is fixedly connected to the protective casing 12 and the voice coil 31, respectively, and the heat of the voice coil 31 can be conducted to the protective casing 12 through the heat transfer member 20.

In some embodiments, referring to fig. 6, the radial dimension of the communicating portion 42 near the end of the protective shell 12 is larger than the radial dimension of the end of the inserting portion 41 far from the protective shell 12.

In order to stably plug the plug portion 41 into the voice coil 31, a radial dimension of an end of the plug portion 41 away from the protective casing 12 is equal to a thickness of the voice coil 31, and a gap between the plug portion 41 and the voice coil 31 is used for filling the heat transfer element 20. Of course, the radial dimension of the end of the socket portion 41 near the shield case 12 may be larger than the thickness of the voice coil 31 to fill a larger amount of the heat transfer member 20.

Thus, referring to fig. 6, the radial dimension of the communication portion 42 in the radial direction of the voice coil 31 may be fixed. At this time, in order to effectively fix the support 40, the radial dimension of the communication portion 42 in the radial direction of the voice coil 31 may be larger than the thickness of the voice coil 31. Thus, the fixing area between the support 40 and the shield case 12 is large.

The radial dimension of the communication portion 42 may be increased in a step shape from an end close to the voice coil 31 to an end far from the voice coil 31, or may be gradually increased to increase the coating area of the heat transfer member 20 on the protective case 12, thereby improving the fixing stability of the support member 40.

In some embodiments, the protective shell 12 may have different thicknesses when different materials are used for the protective shell 12. Illustratively, the thickness of the protective shell 12 of steel may be 1mm to 2mm, and the thickness of the protective shell 12 of glass may be 2mm to 3 mm.

Then, when the thickness of the shield shell 12 is small, the rigidity of the shield shell 12 is small, and the shield shell 12 is easily deformed. Fig. 7 is a first structural schematic view of the protective shell in fig. 1 with a reinforcing plate. Fig. 8 is a schematic diagram of a stiffener structure when the honeycomb sandwich panel of fig. 7 is installed. Fig. 9 is a second schematic structural view of the protective shell in fig. 1 with a reinforcing plate. Referring to fig. 7 to 9, in some embodiments, the refrigerator further includes a sound-emitting plate 50, the sound-emitting plate 50 is attached to a side of the protective shell 12 corresponding to the recess 131, the exciter 30 is fixedly connected to the sound-emitting plate 50, and the damping of the sound-emitting plate 50 is greater than the damping of the protective shell 12.

The sound board 50 may be fixedly coupled to the shield case 12 by a fastener such as a bolt. In some embodiments, both sides of the sound-emitting plate 50 are fixed to the protective shell 12 and the voice coil 31 by the heat transfer member 20, so that the fixing stability is high, and a large amount of heat exchange is performed between the sound-emitting plate 50 and the protective shell 12.

When the thickness of the shield shell 12 is small, the damping of the shield shell 12 is small and the rigidity is large, so that the shield shell 12 easily gives a resonance sound and a sharp sound of a high frequency. By providing the sounding board 50 with a large damping, the damping and rigidity of the portion of the protective shell 12 corresponding to the recessed portion 131 are improved, the frequency range of the sound emitted by the protective shell 12 can be expanded, the protective shell 12 is prevented from emitting resonance sound and high-frequency sharp sound, and the influence on the hearing due to the obvious peak-valley and distortion generated by the audio response of the protective shell 12 is also avoided.

The thickness of the sound-emitting panel 50 may be less than 3 mm. Illustratively, the thickness of the sound-emitting panel 50 in the present embodiment may be 2 mm.

Since the exciter 30 has a magnet, the distance between the exciter 30 and the shield shell 12 becomes large after the sound-emitting panel 50 is disposed. Thus, when the material of the shield case 12 is a magnetic metal such as iron, the magnetic attraction force between the shield case 12 and the actuator 30 can be weakened, and the vibration of the actuator 30 can be prevented from being affected by the magnetic attraction force between the shield case 12 and the actuator 30.

Considering that a portion of the shield case 12 corresponding to the recess 131 may vibrate with the sound-emitting panel 50 while a portion of the shield case 12 connected to the heat insulator 13 is fixed, the sound-emitting panel 50 may be disposed at a central position where the recess 131 is opened.

In some embodiments, there is an avoidance gap between the edge of the sound-emitting panel 50 and the edge of the opening of the recess 131, the avoidance gap being disposed along the circumferential direction of the sound-emitting panel 50. Illustratively, the width of the clearance gap may be 5mm to 15 mm. Compared with the arrangement mode that the sound-emitting plate 50 is attached to the inner wall surface of the concave portion 131, the avoidance gap in the embodiment of the application is large in width, the part, corresponding to the avoidance gap, of the protective shell 12 can form a transition region and vibrate along with the sound-emitting plate 50, and the situation that when the protective shell 12 vibrates due to the fact that the gap between the edge of the sound-emitting plate 50 and the opening of the concave portion 131 is too small, the part, corresponding to the opening of the concave portion 131, of the protective shell 12 cannot obtain enough amplitude due to too large shearing force to affect the volume is avoided.

To achieve heat conduction between the voice coil 31 and the protective case 12, in some embodiments, the sound-emitting plate 50 includes a sound-emitting plate body 51 and a heat conduction portion 52 for conducting heat, the voice coil 31 is connected to the heat conduction portion 52, and the heat transfer members 20 are respectively disposed between the protective case 12 and the heat conduction portion 52 and between the heat conduction portion 52 and the voice coil 31.

At this time, the heat conduction portion 52 constitutes a part of the sound-emitting panel 50, and vibrates with the sound-emitting panel 50. After the voice coil 31 is connected to the sound board 50 through the heat transfer member 20, the heat of the voice coil 31 can be conducted to the heat conduction portion 52 through the heat transfer member 20, and the heat of the heat conduction portion 52 can be conducted to the protective case 12 through the heat transfer member 20.

The material of the heat conducting portion 52 may be silicone heat conducting glue, polyurethane heat conducting glue, heat conducting silicone grease, etc.

In some embodiments, the sound board 50 is a sandwich board. The sound emitted by the sandwich panel has higher amplitude and lower frequency than the sound emitted by the steel plate or the glass plate, that is, the sound emitted by the sandwich panel has better tone quality than the sound emitted by the steel plate or the glass plate.

The sound board 50 comprises a core material 53 and skins, wherein the skins are attached to two opposite sides of the core material 53; the skin is a heat conductive material, and the heat conductive portion 52 is disposed on the core 53 at a position corresponding to the voice coil 31.

The core material 53 is different in material and structure depending on the kind of the sandwich panel. Illustratively, the sound board 50 may be a honeycomb sandwich panel, such as an aluminum honeycomb sandwich panel, an aramid honeycomb sandwich panel, or the like. In this case, the core member 53 has a plate-like structure having a plurality of through holes, and the core member 53 may be made of aluminum, aramid, kraft paper, or the like. Referring to fig. 8, the heat conducting portion 52 may be filled in a through hole position corresponding to the voice coil 31.

The sound board 50 may also be a foam sandwich board, such as a Polyvinyl chloride (PVC) foam sandwich board, a Polymethacrylimide (PMI) foam sandwich board, or the like. The foam sandwich panel is formed by a foaming process. At this time, the core material 53 has an accommodating groove for accommodating the heat-conducting portion 52, and the heat-conducting portion 52 is disposed in the accommodating groove. The heat conducting portion 52 may be disposed between the first skin and the second skin when the foam sandwich panel is formed, and the core material 53 may be filled between the first skin and the second skin and surround the outside of the heat conducting portion 52 when the foam sandwich panel is formed. Of course, after the core material 53 is molded, the foam sandwich panel may be opened to form the receiving groove, and in this case, the heat-conducting portion 52 may be filled in the receiving groove.

In order to improve the heat conduction efficiency between the voice coil 31 and the heat conduction portion 52 and between the heat conduction portion 52 and the protective case 12, the skins on both sides of the core material 53 are made of heat conductive materials, such as carbon fiber and aluminum foil.

Thus, the heat of the voice coil 31 can be transferred to the skin through the heat transfer member 20, the heat of the skin is transferred to the heat conduction portion 52, and then, the heat of the heat conduction portion 52 can be transferred to the other skin, which can be transferred to the protective casing 12 through the heat transfer member 20 for heat dissipation.

To achieve heat conduction between the voice coil 31 and the protective shell 12, referring to fig. 9, in some embodiments, the sound-emitting plate 50 may further include a relief portion, the relief portion communicates with two sides of the sound-emitting plate 50, and the voice coil 31 may pass through the relief portion and be fixedly connected to the protective shell 12. At this time, the voice coil 31 is directly connected to the shield case 12 through the heat transfer member 20, and the heat transfer path is small, so that the heat transfer efficiency is high.

It can be understood that the recess 131 is in a closed state, on one hand, heat generated by the vibration of the exciter 30 can only be dissipated through the protective shell 12, and on the other hand, the gas in the closed space can block the vibration of the protective shell 12, that is, the gas in the closed space can receive gas resistance when the protective shell 12 vibrates, so that the vibration amplitude of the protective shell 12 is reduced.

Fig. 10 is a first schematic structural diagram of the refrigerator in fig. 1 when a heat dissipation channel is provided. Fig. 11 is a second schematic structural diagram of the refrigerator in fig. 1 when a heat dissipation channel is provided.

Referring to fig. 10 to 11, in some embodiments, at least one heat dissipation channel 132 is disposed in the heat insulation member 13, one end of the heat dissipation channel 132 is communicated with the inner wall surface of the recess 131, and the other end of the heat dissipation channel 132 is communicated with the top wall surface or the bottom wall surface of the heat insulation member 13; the protective casing 12 is provided with heat dissipation holes, which are disposed opposite to the heat dissipation channel 132.

One end of the heat dissipation channel 132 is connected to the recess 131, and the other end penetrates the outer wall surface of the heat insulator 13. Meanwhile, the protection case 12 is provided with heat dissipation holes, which are disposed opposite to the heat dissipation channel 132, so that the recess 131 is communicated with the outside air through the heat dissipation channel 132, a part of the heat generated by the coil is conducted to the protection case 12 through the voice coil 31, and the other part is conducted to the outside air through the heat dissipation channel 132, and the heat dissipation effect of the exciter 30 is high.

Meanwhile, in the vibration process of the protective shell 12, air in the concave portion 131 can circulate with outside air through the heat dissipation channel 132, air resistance of the protective shell 12 is small, the vibration amplitude of the protective shell 12 is large, and sound emitted by the refrigerator has a large sound pressure level.

In some embodiments, the number of the heat dissipation channels 132 may be multiple, so that the communication area between the concave portion 131 and the outside air is larger, which is beneficial to dissipate more heat through the heat dissipation channels 132, and the heat dissipation effect is better.

The heat radiating holes may be provided at any position of the protective case 12, for example, the heat radiating holes are provided on a front side wall of the refrigerator. In some embodiments, the heat dissipation holes may be disposed on the top wall or the bottom wall of the protective casing 12, that is, the heat dissipation holes may be hidden at the bottom or the top of the refrigerator, so that the heat dissipation holes are difficult to see by a user from an appearance angle during using the refrigerator, and the appearance of the refrigerator is complete.

And when the heat dissipation holes are disposed at the top or the bottom of the refrigerator, the heat dissipation channel 132 may extend in a vertical direction or in an inclined direction, so as to achieve convection between hot air in the recess 131 and cold air outside the refrigerator by using a chimney effect, thereby increasing the heat dissipation rate of the exciter 30.

It is understood that when the recess 131 is communicated with the external air through the heat dissipation channel 132, the exciter 30 is also exposed to the air through the heat dissipation channel 132, and in some embodiments, the refrigerator is further provided with an air-permeable shield for preventing foreign materials from entering the heat dissipation channel 132.

Among them, the ventilation guard has good ventilation performance, and does not affect the mutual circulation between the hot air in the recess 131 and the cold air outside the refrigerator. Meanwhile, the air-permeable protection member may prevent external foreign objects, such as water, dust, lint, etc., from entering the recess 131 through the heat dissipation channel 132, i.e., the exciter 30 may be well protected by the air-permeable protection member.

In some embodiments, the ventilation protection member comprises a polytetrafluoroethylene layer and a textile layer, the polytetrafluoroethylene layer and the textile layer are attached to each other, wherein the polytetrafluoroethylene layer and the textile layer have good ventilation performance, and the textile layer can protect the polytetrafluoroethylene layer and prevent foreign matters from blocking the polytetrafluoroethylene layer.

In some embodiments, the air permeable guard is removably attached to the refrigerator for periodic cleaning or replacement of the air permeable guard.

The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. 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 used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A refrigerator, characterized by comprising:

the box body comprises an inner container, a protective shell and a heat insulation piece, the heat insulation piece is arranged between the inner container and the protective shell, the heat insulation piece is provided with a concave part, and an opening of the concave part is sealed by the protective shell;

the heat transfer element is connected with the protective shell;

the exciter, the exciter includes the voice coil loudspeaker voice coil that can vibrate, the voice coil loudspeaker voice coil with heat transfer member links to each other, with the vibration transmission of voice coil loudspeaker voice coil extremely the protecting crust, and drive the protecting crust vibration sound production, just the heat accessible that the voice coil loudspeaker voice coil generated heat transfer member conduction extremely on the protecting crust.

2. The refrigerator of claim 1, wherein the voice coil is a thermally conductive material.

3. The refrigerator of claim 1 or 2, wherein the heat transfer member is a thermally conductive paste having viscosity.

4. The refrigerator according to claim 3, further comprising a support having:

the voice coil is spliced with the splicing part;

the communication part is communicated with the insertion part and penetrates through one side, facing the protective shell, of the supporting part, and the heat transfer part is filled in the insertion part and the communication part.

5. The refrigerator according to claim 4, wherein a radial dimension of the communication portion at an end close to the shield shell is larger than a radial dimension of the insertion portion at an end far from the shield shell.

6. The refrigerator according to claim 1 or 2, further comprising a sound-emitting plate attached to one side of the protective case corresponding to the depressed portion, wherein the exciter is fixedly connected to the sound-emitting plate, and wherein the damping of the sound-emitting plate is greater than the damping of the protective case.

7. The refrigerator according to claim 6, wherein the sound-emitting panel includes a sound-emitting panel body and a heat conduction portion for conducting heat, the voice coil is connected to the heat conduction portion, and the heat transfer members are respectively provided between the shield case and the heat conduction portion and between the heat conduction portion and the voice coil.

8. The refrigerator according to claim 7, wherein the sound board is a sandwich board, the sound board comprises a core material and skins attached to opposite sides of the core material;

the covering is a heat conducting material, and the heat conducting portion is arranged at the position, corresponding to the voice coil, of the core material.

9. The refrigerator according to claim 6, wherein the sound board includes an escape portion communicating with both sides of the sound board, and the voice coil can pass through the escape portion and be fixedly connected to the shield case.

10. The refrigerator according to claim 1 or 2, wherein at least one heat radiation passage is provided in the heat insulating member, one end of the heat radiation passage communicates with an inner wall surface of the recessed portion, and the other end of the heat radiation passage communicates with a top wall surface or a bottom wall surface of the heat insulating member; the protective shell is provided with heat dissipation holes, and the heat dissipation holes are arranged opposite to the heat dissipation channel;

the refrigerator is further provided with an air-permeable guard for preventing foreign substances from entering the heat dissipation channel.

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