CN211400479U - A kind of refrigerator - Google Patents

Abstract

The utility model provides a refrigerator, refrigerator includes refrigerating system, refrigerating system includes: the system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated through a pipeline, wherein an outlet of the evaporator is communicated with an inlet of the compressor through a liquid storage device; the device comprises a liquid storage device, and is characterized in that a sound-proof cover is arranged on the outer side of the liquid storage device, penetrating holes suitable for the pipelines on the two sides of the liquid storage device to penetrate through are formed in the sound-proof cover, and a plurality of sound absorbing holes penetrating through the sound-proof cover are formed in the sound-proof cover. The refrigerator of the utility model can effectively reduce the outward transmission and diffusion of noise generated by the flowing of the refrigerant in the liquid storage device by arranging the sound-proof cover with porous sound absorption on the shell of the liquid storage device and utilizing the sound absorption and noise reduction principle of the porous structure and the multilayer attached sound-proof effect of the sound-absorbing material; simultaneously, according to the vibration conditions of the pipeline and the liquid accumulator, the weight and the structural design of the sound-absorbing vibration-damping cover are adjusted to play a vibration-damping effect, and the problem of vibration noise of the position of the liquid accumulator is solved.

Description

A kind of refrigerator

Technical Field

The utility model relates to a refrigerator technical field, in particular to refrigerator.

Background

In the prior art, a liquid accumulator device is arranged at a return air pipeline of an air-cooled refrigerator and mainly plays a role in storing liquid refrigerants.

As shown in fig. 3, the working principle of the liquid reservoir in the multi-system refrigerator refrigeration system is that the refrigerant is sucked by the compressor in a gaseous state, the compressed superheated vapor which becomes high temperature and high pressure is discharged from the exhaust pipe and enters the condenser through the exhaust pipe, the refrigerant dissipates heat into the surrounding air, the high temperature and high pressure gas is condensed into high pressure and medium temperature liquid, and then the liquid enters the capillary tube after being dried and filtered; the refrigerant enters the capillary tube, is intercepted and depressurized due to the slender and blocked channel, and then enters the evaporator for vaporization; in the evaporator, the refrigerant liquid at low temperature and low pressure absorbs a large amount of external heat and is vaporized into dry saturated vapor; therefore, the purpose of absorbing heat and refrigerating to the outside can be achieved in the evaporator. The refrigerant in the suction pipe turns into a low-pressure superheated vapor and is sucked back by the compressor. When the ambient temperature is low, the amount of the refrigerant participating in the system circulation is reduced, and the excessive refrigerant is stored in the liquid storage device; when the ambient temperature rises, the amount of the refrigerant participating in the circulation of the system is increased, and the refrigerant in the liquid storage device starts to participate in the circulation, so that the refrigeration effect of the system in different environments can be kept good. Meanwhile, the liquid accumulator can prevent the phenomenon of excessive liquid circulation of the refrigerant, and the problem of working of the compressor caused by liquid impact is avoided.

However, the existing refrigerator products are usually wrapped by damping clay on the surface of a liquid storage device simply, the problems of unqualified wrapping and poor sound insulation effect often occur in the field process production and treatment process, and when the temperature of a pipeline and the liquid storage device is reduced in the refrigeration process of the refrigerator, the damping clay is hardened to further lose the damping and noise reduction effects.

As shown in fig. 4, in a conventional mounting structure of a liquid reservoir at an upper position of an evaporator, it is found that abnormal "gurgling" flow noise is easily generated at the position of the liquid reservoir during shutdown and defrosting of a refrigerator in a product noise test improvement and sound quality improvement research process. The user is more obvious at daily use in-process feedback pipeline and reservoir flow noise to the regularity appears usually, compares mechanical noise such as compressor, fan, and this kind of abnormal noise arouses user's complaint more easily.

The applicant discovers through an actual refrigerator noise test that the average value of the flowing noise of the liquid accumulator reaches 35.12dB in the refrigerator stopping defrosting process, and the level of the flowing noise is close to the noise of the compressor and the fan in the operation process; seriously affecting the acoustic quality level of the product. According to the abnormal noise condition of the flowing of the liquid accumulator, a visual experimental device is established in the early stage, related mechanism research is carried out, the reason of noise generation is determined, and meanwhile solutions of improving the installation angle of the liquid accumulator, adding a valve in a system pipeline to control the circulation of refrigerant and the like are provided. On one hand, however, the schemes have the problem that the schemes need to be redesigned according to different refrigerator models, which affects the pipeline trend inside the refrigerator to a certain extent; on the other hand, the space in the box of some products is limited by the structural design, and the improvement schemes cannot be effectively adopted.

Although the problem of reservoir noise is common, reservoir noise levels may differ for different product types due to different orientations of the piping design.

In the research process of improving the sound quality of the whole refrigerator, the applicant discovers that the design of the existing pipeline liquid storage device has the following defects by carrying out noise improvement and performance test on a large-volume refrigerator product:

1. only one layer of damping daub is wrapped, and the noise reduction effect is not obvious;

2. the process installation is that manual wrapping and binding tapes are added for simple fixation, so that the problem of poor installation effect is easy to occur;

3. the problem that the existing vibration-damping daub basically has no vibration-damping and noise-reducing effects after being hardened along with the temperature change is solved;

4. with the increase of the proportion of the existing large-volume air-cooled refrigerator, the requirement of high-end products on the sound quality of products is gradually increased, and the problem of abnormal flowing noise vibration of the liquid accumulator is urgently needed to be improved from the use perspective of users.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a refrigerator, to these problems, consider to improve on the basis of current reservoir, inhale the sound structural design through increasing the perforation and attach neotype sound absorbing material simultaneously, design the damping that the reservoir can effectively be used and fall the structure of making an uproar.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a refrigerator comprising a refrigeration system, the refrigeration system comprising: the system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated through a pipeline, wherein an outlet of the evaporator is communicated with an inlet of the compressor through a liquid storage device; the device comprises a liquid storage device, and is characterized in that a sound-proof cover is arranged on the outer side of the liquid storage device, penetrating holes suitable for the pipelines on the two sides of the liquid storage device to penetrate through are formed in the sound-proof cover, and a plurality of sound absorbing holes penetrating through the sound-proof cover are formed in the sound-proof cover.

Furthermore, the sound absorption layer is arranged on the inner side of the sound-proof cover and is a sound absorption thin layer which is formed by attaching sound absorption materials on the inner side of the sound-proof cover.

Further, a sound insulation layer is arranged on the outer side of the sound insulation cover, and the sound insulation layer completely wraps the whole liquid storage device shell.

Further, a sound insulation chamber is formed between the sound insulation layer and the sound insulation cover.

Further, the sound insulation cavity is formed outside the sound absorption hole.

Furthermore, the sound-proof housing comprises two or more sound-proof members, the sound-proof members can be detachably fixed into a whole through a shell connecting structure, and the sound-proof members are nested and installed outside the liquid storage device.

Furthermore, shell connection structure includes grafting fastener and inserting groove, all is provided with grafting fastener and inserting groove on each sound insulating part, and the grafting fastener on each sound insulating part all can be connected with the inserting groove joint on another sound insulating part of being connected with it.

Furthermore, the sound insulation cover comprises a first sound insulation piece and a second sound insulation piece, a first inserting part and a first inserting groove are arranged on the first sound insulation piece, a second inserting part and a second inserting groove are arranged on the second sound insulation piece, and the first inserting part can be inserted into the second inserting groove to be connected in a clamping mode; meanwhile, the second inserting part can be inserted into the first inserting groove to be connected in a clamping mode, and the first sound-insulating part and the second sound-insulating part are connected in an inserting mode and then are covered on the outer side of the liquid storage device.

Further, the first sound insulating member comprises a first left end wall, a first side wall and a first right end wall, the first left end wall and the first right end wall are arranged on two sides of the first side wall, and the first side wall is arranged in an arc shape; meanwhile, the second sound insulation piece comprises a second left end wall, a second side wall and a second right end wall, the second left end wall and the second right end wall are arranged on two sides of the second side wall, the second side wall is arranged in an arc shape, and the sound absorption holes are distributed in an array shape on the first side wall and the second side wall.

Furthermore, the first inserting part and the first inserting groove are respectively arranged at the end parts of the upper end and the lower end of the first side wall, and the first inserting part and the first inserting groove are arranged along the length direction of the first side wall.

Compared with the prior art, the refrigerator of the utility model has the following advantages:

(1) the refrigerator of the utility model forms a porous sound absorption and vibration reduction structure by arranging the sound insulation cover on the surface of the shell of the liquid storage device and arranging a plurality of sound absorption holes which run through the sound insulation cover on the sound insulation cover, improves the flowing noise of the refrigerant in the liquid storage device by utilizing the sound absorption and vibration reduction principle of the porous structure, and effectively reduces the transmission and the diffusion of the noise of the liquid storage device; simultaneously according to the vibration condition of pipeline and reservoir, the weight and the structural design of adjustment sound-proof housing play the damping effect, solve the vibration noise problem of reservoir position.

(2) Through the sound absorbing layer that sound absorbing material formed, the puigging that sound insulating material formed and porous structure's sound-proof housing cooperation design for inside noise source A of reservoir passes through the combined design back of sound absorbing layer, porous structure, sound insulation chamber and puigging, and only a small part can spread and form external received noise B, makes the reservoir noise obtain good improvement.

(3) The refrigerator of the utility model designs the sound-proof cover into a plurality of sound-proof pieces which are detachably connected in a split type, can be quickly installed and detached on site compared with an integrated structure, and has relatively simple manufacturing process; it can be in reservoir structural design production shaping back, judge through experimental test whether refrigerating system's pipeline noise accords with enterprise and subjective evaluation standard requirement, if need carry out the design again and adopt, the commonality is better to the later stage is maintained and is changed more easily, clamps fixed scheme to this kind of split type structure and also multiple type can carry out effective extension application, and the suitability is stronger.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a schematic view of a refrigerator;

FIG. 2 is a schematic view of an installation structure of an internal reservoir of a refrigerator;

FIG. 3 is a schematic diagram of the operation of a reservoir in a multi-system refrigerator refrigeration system;

FIG. 4 is a mounting structure of a liquid reservoir at an upper position of an evaporator inside a refrigerator;

fig. 5 is a schematic view of an assembly structure of the liquid reservoir and the sound-proof housing according to the embodiment of the present invention;

fig. 6 is an exploded view of the liquid reservoir and the soundproof cover according to the embodiment of the present invention;

fig. 7 is a front view of the reservoir and the soundproof cover according to the embodiment of the present invention after being assembled;

FIG. 8 is a schematic cross-sectional view of A-A of FIG. 7;

FIG. 9 is a schematic cross-sectional view of C-C of FIG. 7;

fig. 10 is an exploded view of a soundproof cover according to an embodiment of the present invention;

FIG. 11 is a left side view of an explosive structure of the sound enclosure;

FIG. 12 is a schematic view of the sound absorbing and noise reducing porous structure according to the embodiment of the present invention;

fig. 13 is a sectional view of an assembly structure of the liquid reservoir, the sound absorbing layer, the sound-proof housing and the sound-proof layer according to the embodiment of the present invention;

fig. 14 is an exploded view of the liquid reservoir, the sound absorbing layer, the sound-proof cover, and the sound-proof layer according to the embodiment of the present invention;

description of reference numerals:

1-evaporator, 2-reservoir, 201-first port, 202-second port, 3-soundproof cover, 301-first soundproof, 301 a-first plug-in part, 301B-first plug-in groove, 301 c-first left end wall, 301 d-first side wall, 301 e-first right end wall, 302-second soundproof, 302 a-second plug-in part, 302 c-second left end wall, 302 d-second side wall, 302 e-second right end wall, 303-sound-absorbing hole, 304-sound-absorbing layer, 305-porous layer, 306-soundproof layer, 307-soundproof cavity, 5-outflow pipe, a-internal noise source, B-external received noise.

Detailed Description

In order to make the technical means and the objectives and functions of the present invention easy to understand, the embodiments of the present invention will be described in detail with reference to the specific drawings.

It should be noted that all terms used in the present invention for directional and positional indication, such as: the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "lower", "transverse", "longitudinal", "center", etc. are used only for explaining the relative positional relationship, connection conditions, etc. between the respective members in a certain specific state (as shown in the drawings), and are only for convenience of description of the present invention, and do not require that the present invention must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above 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.

As shown in fig. 1-3, the utility model discloses a refrigerator, refrigerator includes refrigerating system, refrigerating system includes: the system comprises a compressor, a condenser, a throttling device and an evaporator 1 which are sequentially communicated through pipelines, wherein an outlet of the evaporator 1 is communicated with an inlet of the compressor through a liquid storage device.

As shown in fig. 5 and 6, a sound-proof housing 3 is disposed outside the liquid reservoir 2, the sound-proof housing is provided with through holes suitable for the pipes on the two sides of the liquid reservoir to penetrate out, the sound-proof housing 3 is provided with a plurality of sound-absorbing holes 303 penetrating through the sound-proof housing, and the sound-absorbing holes 303 are disposed on the sound-proof housing 3 to form a porous sound-absorbing and vibration-damping structure.

Through adding a layer of sound-proof housing 3 design outside the accumulator, a plurality of sound-absorbing holes 303 are arranged on the sound-proof housing 3, preferably, as shown in fig. 7, a plurality of said sound-absorbing holes 303 are regularly distributed on said sound-proof housing 3, refrigerant flowing noise inside the accumulator is improved by using the sound-absorbing and vibration-damping principle of the porous structure on the sound-proof housing 3, and the size of the small holes can be adjusted to be suitable for noise vibration absorption of different frequency bands.

Refrigerator, through increase a design on the reservoir have porous structure's sound-proof housing, rational in infrastructure, utilize porous structure's the sound of inhaling to fall the noise principle, effectively reduce the transmission and the diffusion of reservoir noise, simultaneously according to the vibration condition of pipeline and reservoir, the weight and the structural design of adjustment sound-proof housing play the damping effect, solve the vibration noise problem of reservoir position, make the reservoir noise obtain good improvement.

As shown in fig. 12, the porous sound absorbing and damping structure includes a porous layer 305, a sound absorbing hole 303 of the porous layer 305 is a through hole or a blind hole, and the side of the sound absorbing hole 303 close to the liquid reservoir 2 is provided in an open shape. This arrangement discloses a porous structure, ensuring that the soundproof cover 3 of the porous structure improves the effect of the refrigerant flow noise inside the accumulator.

Preferably, as shown in fig. 12 and 13, a sound absorbing layer 304 is provided inside the soundproof cover 3, and the sound absorbing layer 304 is a sound absorbing thin layer formed by attaching a sound absorbing material to the inside of the soundproof cover 3. Through the cooperation design of sound absorbing material and porous structure, can reach the effect that weakens most noise.

Preferably, as shown in fig. 12 and 13, a soundproof layer 306 is provided outside the soundproof cover 3, and the soundproof layer 306 is formed of a material having a soundproof effect outside the soundproof cover 3. Further, the sound insulation layer 306 completely wraps the whole reservoir housing, a sound insulation cavity 307 is formed between the sound insulation layer 306 and the sound insulation cover 3, the sound insulation cavity 307 is communicated with the sound absorption hole 303, and the sound insulation layer 306 and the sound insulation cavity 307 are used for isolating flowing noise of the reservoir refrigerant from diffusing outwards. Through the combined design of the multilayer sound-absorbing and sound-insulating material and the porous structure, the noise of the liquid accumulator is well improved.

Preferably, the sound insulation cavity 307 is arranged outside the sound absorption hole 303. Specifically, as shown in fig. 13 and 14, a sound insulation chamber 307 is formed by leaving a gap between the sound insulation layer 306 and the outside of the portion of the sound insulation cover 3 where the sound absorption hole 303 is provided, and both sides of the sound insulation layer 306 are attached to both end portions of the sound insulation cover 3.

The specific structural design concept is shown in FIGS. 9-14: firstly, a layer of sound-absorbing shell is added outside the liquid accumulator, small holes are regularly distributed on the shell to form a sound-insulating cover 3, the flowing noise of the refrigerant inside the liquid accumulator is improved by utilizing the sound-absorbing and vibration-damping principle of a porous structure, and the sound-absorbing shell can be suitable for noise vibration absorption of different frequency bands by adjusting the sizes of the small holes; a thin sound-absorbing material can be further attached to the interior of the sound-absorbing shell, and the effect of weakening most of noise can be achieved through the matching design of the sound-absorbing material and the porous structure; and finally, a material with a sound insulation effect is added to the outermost part of the porous sound absorption shell to completely wrap the whole shell of the liquid storage device so as to isolate the flowing noise of the refrigerant of the liquid storage device from being diffused outwards. As shown in fig. 12, after the internal noise source a inside the liquid reservoir is designed by the combination of the sound absorbing layer, the porous structure, the sound insulating cavity and the sound insulating layer, only a small amount of the internal noise source a can be transmitted to form the external receiving noise B, so that the noise of the liquid reservoir is improved well. As an example of the present invention, the sound absorbing material and the sound insulating material are commercially available materials.

To above-mentioned structural design improvement scheme, carry out the vibration noise test contrastive analysis that the inside refrigerant of reservoir of complete machine flows, noise sound power test result shows, the main reservoir structure of testing is forcing the frost and the refrigerator shut down the noise level under these two easy arouse user complaints circumstances, compare the refrigerator that original reservoir structure adopted porous combination damping noise reduction structural design, flow noise reduces about 1.5dB in the stage of forcing the frost, the noise level is close to the background noise condition, the noise reduces 0.6dB in the refrigerator shut down stage, reservoir position pipeline vibration condition also obviously improves simultaneously.

The design of the porous sound absorption structure and the design of the multilayer sound absorption and insulation material combined use can be applied to the flowing noise of the liquid storage device, and the relevant expansion use can be carried out on the eruption noise of the transition pipeline and the flowing noise in the air duct of the fan.

As a preferred example of the present invention, the soundproof cover 3 includes two or more soundproof members, and the soundproof members can be detachably fixed to each other through the housing connection structure to form a whole, and are nestedly mounted outside the liquid reservoir 2. As an example of the present invention, the soundproof cover 3 includes two or more parts that can be freely assembled, each part forms a sound insulating member, for example, as shown in fig. 6, the soundproof cover 3 includes a first sound insulating member 301 and a second sound insulating member 302, the first sound insulating member 301 and the second sound insulating member 302 divide the vibration/noise reduction casing of the liquid reservoir 2 into two parts that can be freely assembled, and the two parts are fastened and fixed to form a whole by a casing connecting structure. The soundproof cover 3 may include three or more soundproof members, each of which is a freely assembled part, and a plurality of soundproof members are combined and connected to form the soundproof cover 3.

Compare the sound-proof housing 3 of integral type structure, through setting up split type sound-proof housing 3, it is more simple and convenient easy-to-use.

Various types of clamping and fixing schemes for the split structure can be effectively expanded and applied, and compared with an integrated structure, the split structure can be quickly installed and disassembled on site, and meanwhile, the manufacturing process is relatively simple; it can be in reservoir structural design production shaping back, judge through the experimental test whether refrigerating system's pipeline noise accords with enterprise and subjective evaluation standard requirement, if need carry out the design again and adopt, the commonality is better to the later stage is maintained the easier change of comparison.

As a preferred example of the present invention, the housing connection structure includes a plug-in fastener and a plug-in groove, the plug-in fastener and the plug-in groove are provided on each freely assembled part, and the plug-in fastener on each freely assembled part can be connected with the plug-in groove of another freely assembled part connected therewith. As an example of the present invention, as shown in fig. 10 and 11, a first inserting portion 301a and a first inserting groove 301b are provided on the first sound insulating member 301, a second inserting portion 302a and a second inserting groove are provided on the second sound insulating member 302, and the first inserting portion 301a can be inserted into the second inserting groove for clamping connection; meanwhile, the second inserting part 302a can be inserted into the first inserting groove 301b to be connected in a clamping manner, so that the first sound insulating piece 301 and the second sound insulating piece 302 are connected in an inserting manner and then are covered on the outer side of the liquid storage device 2, and quick installation and disassembly are facilitated. As a preferred example of the present invention, the insertion fastener and the clamping connection of the insertion groove are realized by an elastic buckle.

As a preferred example of the present invention, as shown in fig. 8, the first sound insulating member 301 includes a first left end wall 301c, a first side wall 301d, and a first right end wall 301e, the first left end wall 301c and the first right end wall 301e are disposed on two sides of the first side wall 301d, and the first side wall 301d is disposed in an arc shape; meanwhile, the second sound insulating member 302 includes a second left end wall 302c, a second right end wall 302d, and a second left end wall 302c and a second right end wall 302e, the second left end wall 302c and the second right end wall 302e are disposed on both sides of the second side wall 302d, and the second side wall 302d is disposed in an arc shape.

As a preferred example of the present invention, as shown in fig. 7 and 8, a plurality of sound absorbing holes 303 are distributed in an array on the first side wall 301d and the second side wall 302 d. This setting has guaranteed the sound effect of inhaling of sound-proof housing 3, improves the inside refrigerant flow noise of reservoir through the sound damping principle of inhaling that utilizes porous structure, can be applicable to the noise vibration absorption of different frequency sections through adjusting the size of these apertures. Preferably, the diameters of the sound absorbing holes 303 provided in the first sidewall 301d and the second sidewall 302d may be the same or different.

As a preferred example of the present invention, as shown in fig. 8 and 10, the first inserting portion 301a and the first inserting groove 301b are respectively disposed at the end portions of the upper end and the lower end of the first side wall 301d, and the first inserting portion 301a and the first inserting groove 301b are disposed along the length direction of the first side wall 301 d. Preferably, the first inserting-connecting part 301a, the first inserting-connecting groove 301b and the first side wall 301d are all long, and the arrangement ensures the stability and reliability of the clamping connection of the two sound insulation pieces. Alternatively, the first mating portion 301a and the first mating groove 301b may be provided in a plurality of stages intermittently in the longitudinal direction of the first sidewall 301 d.

Similarly, as shown in fig. 8 and 9, the positions and structures of the second insertion part 302a and the second insertion groove on the second side wall 302d are the same as the positions and structures of the first insertion part 301a and the first insertion groove 301b on the first side wall 301 d. This setting has further guaranteed the convenience and the commonality of sound-proof housing 3 processing production and maintenance.

As a preferred example of the present invention, as shown in fig. 8, a first port 201 and a second port 202 are respectively disposed at two ends of the liquid reservoir 2, the first port 201 and the second port 202 respectively extend out of the front end and the rear end of the soundproof cover 3, an outflow pipe 5 is disposed in the first port 201, and one end of the outflow pipe 5 extends into the cavity of the liquid reservoir 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A refrigerator comprising a refrigeration system, the refrigeration system comprising: the system comprises a compressor, a condenser, a throttling device and an evaporator which are sequentially communicated through a pipeline, wherein an outlet of the evaporator is communicated with an inlet of the compressor through a liquid storage device; the liquid storage device is characterized in that a sound-proof cover is arranged on the outer side of the liquid storage device, penetrating holes suitable for the pipelines on the two sides of the liquid storage device to penetrate out are formed in the sound-proof cover, and a plurality of sound absorption holes penetrating through the sound-proof cover are formed in the sound-proof cover.

2. The refrigerator according to claim 1, wherein a sound absorbing layer is provided inside the soundproof cover, and the sound absorbing layer is formed by attaching a sound absorbing material to the inside of the soundproof cover.

3. The refrigerator according to claim 2, wherein a soundproof layer is provided on an outer side of the soundproof cover, and the soundproof layer completely covers the entire reservoir casing.

4. The refrigerator according to claim 3, wherein a sound insulation chamber is formed between the sound insulation layer and the sound insulation cover.

5. The refrigerator of claim 4, wherein the sound-proof chamber is formed outside the sound-absorbing hole.

6. The refrigerator as claimed in any one of claims 1 to 5, wherein the soundproof cover includes two or more soundproof members detachably fixed to each other by a housing connecting structure to be integrated with each other, and nestingly mounted outside the liquid reservoir.

7. The refrigerator as claimed in claim 6, wherein the housing connection structure includes a plugging member and a plugging groove, the plugging member and the plugging groove are provided on each of the soundproof members, and the plugging member on each of the soundproof members is capable of being connected with the plugging groove on the other soundproof member connected thereto.

8. The refrigerator according to claim 7, wherein the soundproof cover comprises a first soundproof member and a second soundproof member, wherein the first soundproof member is provided with a first insertion part and a first insertion groove, the second soundproof member is provided with a second insertion part and a second insertion groove, and the first insertion part can be inserted into the second insertion groove and clamped; meanwhile, the second inserting part can be inserted into the first inserting groove to be connected in a clamping mode, and the first sound-insulating part and the second sound-insulating part are connected in an inserting mode and then are covered on the outer side of the liquid storage device.

9. The refrigerator of claim 8, wherein the first baffle includes a first left end wall, a first side wall, a first right end wall, the first left end wall and the first right end wall being disposed on both sides of the first side wall, the first side wall being arcuately disposed; meanwhile, the second sound insulation piece comprises a second left end wall, a second side wall and a second right end wall, the second left end wall and the second right end wall are arranged on two sides of the second side wall, the second side wall is arranged in an arc shape, and the sound absorption holes are distributed in an array shape on the first side wall and the second side wall.

10. The refrigerator as claimed in claim 9, wherein the first insertion part and the first insertion groove are respectively formed at upper and lower ends of the first sidewall, and the first insertion part and the first insertion groove are formed along a length direction of the first sidewall.

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