CN212179330U

CN212179330U - Refrigerator with a door

Info

Publication number: CN212179330U
Application number: CN202020650041.6U
Authority: CN
Inventors: 杨春; 刘铁伟; 张鹏
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-12-18
Anticipated expiration: 2030-04-26

Abstract

The utility model provides a refrigerator, its muffler that includes the vacuum pump and is linked together with the vacuum pump, the muffler includes: the connecting pipes are arranged at the two opposite ends of the silencer and are communicated with the resonant cavities; wherein the connecting pipe at one end is communicated with the exhaust pipe of the vacuum pump; wherein the cross-sectional area of the connecting cavity is smaller than the cross-sectional area of the resonant cavity; when the silencer of the utility model leads the air flow to pass through the silencer, the air flow needs to pass through a plurality of resonant cavities, under the action of sound wave, the air flow generates vibration and rubs with the cavity opening wall of the resonant cavity, so that a part of sound energy is converted into heat energy to be dissipated; meanwhile, sound waves are reflected and interfered due to the abrupt change of the acoustic impedance, so that sound energy is attenuated, noise reduction is realized, the overall performance of the refrigerator is optimized, and the user experience is improved.

Description

Refrigerator with a door

Technical Field

The utility model belongs to the technical field of the refrigerator, especially, relate to a refrigerator.

Background

Refrigerators occupy an important share of the market as indispensable electric appliances in home life. With the increasing requirements of consumers on the quality of fresh food, the requirements on refrigerators are also increasing, and refrigerators are required to have higher configuration and stronger functions, and especially, it is desirable that the stored fresh food can have a longer storage period, so that the freshness of food materials is ensured, and the loss of nutritional ingredients is prevented.

In order to better store the food, it has been developed to provide a vacuum chamber in the refrigerator, and the vacuum chamber is vacuumized by a vacuuming device. The main function of the vacuum is to remove oxygen from the vacuum chamber to prevent food from deteriorating. When the vacuumizing device works, vibration noise is generated and is directly transmitted to the refrigerator body, the overall performance of the refrigerator is affected, and the user experience is reduced.

In view of this, the present invention is proposed.

Disclosure of Invention

The utility model provides a to foretell technical problem, provide a refrigerator.

In order to achieve the above object, the utility model discloses a technical scheme be:

a refrigerator, comprising:

the low-temperature storage compartment is surrounded by the inner container;

the low-pressure storage unit is positioned in the low-temperature storage room and can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to be beneficial to the fresh keeping of food;

the vacuum pump is communicated with the low-pressure storage unit and is used for pumping out air in the low-pressure storage unit; the vacuum pump is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit;

a muffler, comprising:

the resonant cavities are distributed at intervals;

the connecting cavity is communicated with the two adjacent resonant cavities and is arranged at intervals with the resonant cavities;

the connecting pipes are arranged at the two opposite end parts of the silencer distributed along the central axis of the silencer and are communicated with the resonant cavity; and the connecting pipe at one end is communicated with the exhaust pipe;

wherein the cross-sectional area of the connecting cavity is smaller than the cross-sectional area of the resonant cavity.

Preferably, the silencer comprises a first silencer and a second silencer;

the first silencing piece comprises a plurality of first resonance subsections and first connection subsections which are arranged at intervals, wherein the first resonance subsections are surrounded by first resonance sub-cavities with one open ends, and the first connection subsections are surrounded by first connection sub-cavities with one open ends;

the second silencing part comprises a plurality of second resonance subsections and second connecting subsections which are arranged at intervals, wherein the second resonance subsections surround a second resonance sub-cavity with one open end, and the second connecting subsections surround a second connecting sub-cavity with one open end;

the open end of the first resonance subsection is butted with the open end of the second resonance subsection corresponding to the first resonance subsection, and the open end of the second connection subsection is butted with the open end of the second connection subsection corresponding to the first connection subsection, so that a plurality of resonance cavities and connection cavities which are arranged at intervals are defined.

Preferably, the first silencing piece and the second silencing piece are formed by ultrasonic welding.

Preferably, the first resonance part of the first silencing piece is provided with a clamping hole at the edge close to the opening end of the first resonance part; a clamping block is arranged at the edge of the second resonance subsection of the second silencing piece close to the opening end of the second resonance subsection; when the first resonance part is butted with the opening of the second resonance part, the clamping hole is matched with the clamping block to connect the first silencing piece and the second silencing piece into a whole.

Preferably, the second sound deadening member is formed with a ring plate near an open end thereof; the opening end of the first silencing piece is close to the inner edge part of the first silencing subchamber and is sunken into the first silencing subchamber to form a mounting table; the mounting table on the first silencing piece is matched with the annular plate of the second silencing piece, so that the cavity wall at the opening end of the first silencing piece is sleeved on the periphery of the mounting table of the second silencing piece.

Preferably, a drain pipe is arranged on the refrigerator;

the connecting pipe at one end of the silencer is connected with the exhaust pipe of the vacuum pump, and the connecting pipe at the other end of the silencer is communicated with the drain pipe;

when the vacuum pump works, air in the low-pressure storage unit is conveyed to the drain pipe through the air suction pipe, the vacuum pump, the exhaust pipe and the silencer in sequence, and finally is discharged out of the refrigerator through the drain pipe.

Preferably, a foaming layer is arranged on one side, away from the low-pressure storage unit, of the inner container, and the silencer is arranged in the foaming layer.

Preferably, an elastic piece is sleeved on the outer side of the vacuum pump, and a pump shell is sleeved on the outer side of the elastic piece;

the pump shell is fixedly connected to the inner container through a first fixing piece and a second fixing piece which are respectively positioned on the inner side and the outer side of the inner container; wherein, the inner container is provided with a mounting hole;

the first fixing piece is accommodated at one side of the inner container and is fixed with the pump shell; the first fixing piece is provided with a fixing through hole;

the second fixing piece is accommodated at the other side of the inner container and comprises a stopping part and a fixing clamping hook which are connected;

wherein the stopping part is stopped by the inner container;

the fixing clamping hook penetrates through the mounting hole in the inner container and the fixing through hole in the first fixing piece and is clamped with the first fixing piece.

Preferably, the pump shell is provided with a connecting plate, and the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;

the first fixing piece comprises a fixing column arranged in an installation notch on the pump shell and fixing plates arranged at two end parts of the fixing column; and an installation groove for accommodating the pump shell upper connecting plate is formed between the fixing plates arranged at the two end parts of the fixing column.

Preferably, the vacuum pump is installed in a seal box, the seal box is installed in a compressor bin of the refrigerator, and gas passing through the vacuum pump is exhausted to the outside of the refrigerator after passing through the silencer.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

Drawings

Fig. 1 is a schematic view of the overall structure of the refrigerator of the present invention;

FIG. 2 is a schematic view of a portion of the refrigerator of the present invention;

FIG. 3 is a schematic diagram of the relative position structure of the drain pipe and the inner container of the refrigerator of the present invention;

FIG. 4 is a schematic diagram of the relative positions of the vacuum pump assembly, the low pressure storage unit and the drain pipe of the refrigerator according to the present invention;

FIG. 5 is a schematic view of the refrigerator with the vacuum pump assembly, the low pressure storage unit and the drain pipe at another angle;

FIG. 6 shows the relative positions of the vacuum pump assembly, the low pressure storage unit, the drain pipe and the muffler;

fig. 7 is a schematic view of an overall structure of a silencer of a refrigerator according to the present invention;

FIG. 8 is an exploded view of the muffler shown in FIG. 7;

FIG. 9 is an exploded view of the muffler shown in FIG. 7 from another perspective;

fig. 10 is another schematic overall structure diagram of the silencer of the refrigerator of the present invention; (ii) a

FIG. 11 is an exploded view of the muffler shown in FIG. 10;

FIG. 12 is an exploded view of the muffler of FIG. 10 from another perspective;

fig. 13 is a schematic diagram of a relative position relationship between the second fixing member and the inner container of the refrigerator of the present invention;

FIG. 14 is a schematic structural view of a vacuum pump assembly and an inner container of the refrigerator of the present invention;

FIG. 15 is another schematic structural view of the vacuum pump assembly and the inner container of the refrigerator of the present invention;

fig. 16 is an exploded view of the vacuum pump assembly, the first fixing member and the second fixing member of the refrigerator according to the present invention;

fig. 17 is an exploded view of the pump casing of the refrigerator of the present invention;

FIG. 18 is a schematic view of a structure of the vacuum pump assembly of the refrigerator according to the present invention cooperating with the first fixing member;

FIG. 19 is a schematic view of the assembly structure of the vacuum pump assembly and the inner container of the refrigerator of the present invention;

FIG. 20 is an enlarged view of area A of FIG. 19;

fig. 21 is a schematic view of the overall structure of another embodiment of the refrigerator of the present invention;

FIG. 22 is a schematic view of the connection structure of the vacuum pump, the sealing box and the silencer of the refrigerator of the present invention;

fig. 23 is another schematic view of the connection structure of the vacuum pump, the sealing box and the silencer of the refrigerator of the present invention;

fig. 24 is an exploded view of the vacuum pump and the sealing box of the refrigerator of the present invention.

In the above figures:

a refrigerator 1; a box body 2; a housing 2 a; an inner container 2 b; a mounting hole 21; an accommodating chamber 22; a separation space 23; a refrigerating chamber 10; a freshness retaining container 11; a low-pressure storage unit 12; a housing 4; a door body 5; a drain pipe 13; a vacuum pump 3; a first pipe 14; a second pipe 15; a suction pipe 16; an exhaust pipe 17; a pump housing 6; a connecting plate 61; the mounting notches 61 a; a first housing 6 a; a second housing 6 b; an elastic body 7; a first fixing member 8; a fixed plate 81 a; a fixing through hole 81 c; a mounting groove 82; a projection 83; a second fixing member 9; a stopper portion 91 a; a fixed hook 91 b; an isolated space 92; an elastic pad 18; a muffler 24; the first silencing piece 25; a first resonance section 253; a first connection section 254; a first resonance sub-chamber 253 a; first connection subchamber 254 a; the first connecting pipe 251; a second connection pipe 252; a second noise reducing member 26; a second resonance subsection 261; a second connecting section 262; a second resonant subchamber 261 a; a second connecting subchamber 262 a; a chucking hole 253 b; a latch 261 b; a mounting table 253 c; a ring plate 261 c; a seal case 30; a case 30 a; a box end cap 30 b; the accommodation chamber 31; a seal ring 32; an intake pipe 33; an outlet pipe 34; a support 35; a base 35 a; and a support 35 b.

Detailed Description

The present invention is further described below in conjunction with specific embodiments so that those skilled in the art may better understand the present invention and can implement the present invention, but the scope of the present invention is not limited to the scope described in the detailed description. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed accordingly.

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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example one

Fig. 1 to 20 are schematic structural views of a locking mechanism of a low pressure storage unit of a refrigerator; referring to fig. 1-2, a refrigerator 1, the refrigerator 1 includes a heat-insulating box 2, the box 2 includes a casing 2a, an inner container 2b and a heat-insulating layer (not shown) therebetween. The cabinet 2 defines a plurality of insulated low-temperature storage compartments to store food and the like. In the present embodiment, these low-temperature storage compartments are a refrigerating compartment 10 located at the upper portion and a freezing compartment located at the bottom portion, respectively. The low-temperature storage compartments may be closed by respective corresponding door. The utility model discloses well freezer 10 sets up cold-stored door that runs from opposite directions, and the freezer sets up the freezing door that runs from opposite directions.

It should be understood that the present invention should not be limited to the specific distribution of the storage compartments of the refrigerator 1, but that the present invention can also be applied to other forms of refrigerators 1, such as a refrigerator 1 with a drawer-type door, etc.

The refrigerator 1 has an evaporative refrigeration system forming a closed loop. The refrigeration system includes at least a compressor (not shown), a condenser (not shown), a throttle device (not shown), and an evaporator (not shown). Since such a refrigeration system is well known in the art, further description thereof is omitted. Of course, other types of refrigeration systems (e.g., absorption refrigeration systems, thermoelectric refrigeration systems) may be used with the refrigerator 1.

The refrigerator 1 is provided with a low pressure storage unit 12 which can be maintained in a low pressure state and a vacuum pump assembly for pumping gas from the inside of the low pressure storage unit 12. The vacuum pump assembly may include a vacuum pump 3 and a pipe connected between the vacuum pump 3 and the low pressure storage unit 12.

In the present embodiment, the low pressure storage unit 12 is provided inside the refrigerating compartment 10. It should be understood that in other embodiments, the low pressure storage unit 12 may be disposed in other low temperature storage compartments, such as a temperature-changing compartment having a temperature range that is switchable between a refrigerated temperature zone and a frozen temperature zone.

The low pressure storage unit 12 is located at the bottom of the refrigerating compartment 10 and supported on the bottom wall of the refrigerating compartment 10. A fresh-keeping container 11 with high humidity and suitable for keeping foods such as vegetables and the like can be arranged at the adjacent position of the low-pressure storage unit 12; the low pressure storage unit 12 is provided at the bottom of the refrigerating compartment 10 in parallel with the fresh food container 11.

The low pressure storage unit 12 may be assembled in the cabinet 2 after being constructed independently of the cabinet 2. Referring to fig. 2, in the present embodiment, the low pressure storage unit 12 has a substantially flat rectangular parallelepiped shape, and the sum of the width of the low pressure storage unit 12 and the width of the fresh food container 11 is slightly smaller than the width of the refrigerating compartment 10, so that the bottom space of the refrigerating compartment 10 is effectively allocated, and both the fresh food container 11 and the low pressure storage unit 12 can be inserted into the refrigerating compartment 10 or pulled out of the refrigerating compartment 10.

The low pressure storage unit 12 includes a case 4 fixed in the refrigerating chamber 10 and a door 5 connected to the case 4 and movable into and out of the refrigerating chamber 10.

Referring to fig. 2, the housing 4 has a box-shaped structure defining a flat low-pressure storage compartment having a food access opening. In this embodiment, the access opening is located at the front end of the housing 4 facing the user. The latticed reinforcing ribs are arranged on the outer side of the box wall of the shell 4 to increase the strength of the box wall of the shell 4 and avoid deformation of the shell 4 caused by the difference between the internal pressure and the external pressure after vacuumizing.

Door 5 may be provided with an annular sealing member to form an airtight joint between housing 4 and door 5 when door 5 is in the closed position, preventing gas from entering the low-pressure storage chamber from the joint between housing 4 and door 5. The sealing element may also be arranged at the front end of the housing 4.

When the low pressure storage chamber is closed by the door 5 and the vacuum pump assembly is started, the gas in the low pressure storage chamber is extracted and the low pressure storage chamber is in a low pressure state. According to a preferred embodiment of the present invention, at the end of the evacuation sequence, the pressure in the low pressure storage chamber is between one standard atmosphere and absolute vacuum. The skilled person also colloquially refers to the "vacuum chamber" as the pressure in the low pressure storage chamber is lower than the standard atmospheric pressure.

The door body 5 is a drawer type door, and the door body 5 may be pushed toward the case 4 to close the access port of the low pressure storage chamber or pulled out to open the low pressure storage chamber. The rear side of the door body 5 is connected with a tray-shaped article container for placing articles. The user obtains items located in the low pressure storage unit 12 or stores items in the low pressure storage unit 12 by pushing or pulling the storage container into or out of the low pressure storage compartment. The door 5 and the storage container together constitute a drawer unit that can be pushed into and pulled out of the housing 4.

As shown in fig. 3 to 6, the refrigerator 1 has a drain pipe 13 for draining condensed water inside the refrigerator 1. One end of the vacuum pump assembly is communicated with the low pressure storage unit 12, and the other end is communicated with a drain pipe 13 of the refrigerator 1. The vacuum pump assembly operates to pump out the air in the low pressure storage unit 12 and transfer it to the drain pipe 13, and finally, it is discharged out of the refrigerator 1 through the drain pipe 13. So as to avoid the air pumped out from the low-pressure storage unit 12 directly discharging into the refrigerator 1 to make the foods in other areas in the refrigerating chamber 10 taint with each other and affect the fresh-keeping effect of the foods.

The vacuum pump assembly includes a vacuum pump 3, a first pipe 14 connecting the vacuum pump 3 and the low pressure storage unit 12, and a second pipe 15 connecting the vacuum pump 3 and the drain pipe 13, wherein a silencer 24 is provided on the second pipe 15.

The vacuum pump assembly is provided on the inner container 2b of the refrigerating chamber 10 near the bottom of the low pressure storage unit 12. The upper part of the back wall of the inner container 2b of the refrigerating chamber 10 is recessed backwards to form an accommodating cavity 22 for accommodating a vacuum pump assembly; the area of the inner container 2b close to the containing cavity 22 is provided with a mounting hole 21 for fixing the vacuum pump assembly. In this embodiment, the vacuum pump assembly is located in the accommodating chamber 22, and a separation space 23 is formed between the vacuum pump assembly and the chamber wall of the accommodating chamber 22, so as to reduce direct contact between the vacuum pump assembly and the inner container 2b, reduce transmission of vibration, and effectively reduce noise.

The vacuum pump assembly comprises a vacuum pump 3, a pump shell 6 and an elastic body 7 sleeved between the vacuum pump 3 and the pump shell 6. The vacuum pump 3 is provided with an air suction pipe 16 communicated with the first pipeline 14 and an exhaust pipe 17 communicated with the second pipeline 15. The exhaust pipe 16 is arranged in parallel with the exhaust pipe 17 and is located at the same end of the vacuum pump 3. When the vacuum pump is operated, the air in the low-pressure storage unit 12 is sequentially conveyed to the drain pipe 13 through the first pipeline 14, the air suction pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipeline 15 and the silencer 24 arranged on the second pipeline 15, and finally is discharged out of the box body 2 through the drain pipe 13. In the embodiment, the outer side of the vacuum pump is sleeved with the elastic body, and the elastic body can absorb the vibration on the vacuum pump so as to reduce the noise generated when the vacuum pump works; in addition, be equipped with the muffler on the second pipeline to further noise absorption, with the wholeness ability of optimizing the refrigerator, improve user experience.

Referring to fig. 7-9, in the present embodiment, the muffler 24 includes a plurality of resonant cavities connected in series, and two adjacent resonant cavities are connected in series through a connecting cavity. A first connecting pipe 251 and a second connecting pipe 252 communicated with the resonance cavity are respectively arranged at the two end parts of the silencer 24; the muffler 24 is connected to the second pipe 15 via the first and

second connection pipes

251 and 252. When the airflow passes through the silencer 24, the airflow needs to pass through a plurality of resonant cavities, the airflow generates vibration under the action of sound waves, and when the airflow vibrates, the airflow rubs against the cavity opening walls of the resonant cavities to convert a part of sound energy into heat energy for dissipation; meanwhile, due to the abrupt change of the acoustic impedance, the acoustic energy is attenuated by reflection and interference of the acoustic wave. When the natural frequency of the system and the frequency of the sound wave resonate, the sound energy is consumed the most, and the noise elimination amount is the largest.

In the present embodiment, the muffler 24 includes a first muffler component 25 and a second muffler component 26. The first muffler element 25 and the second muffler element 26 together define a plurality of resonance chambers and connecting chambers arranged at intervals.

The first silencing element 25 comprises a plurality of first resonance portions 253 and first connection portions 254 arranged at intervals. The first resonance portion 253 encloses a first resonance sub-chamber 253a with an opening at one end, the first connection portion 254 encloses a first connection sub-chamber 254a with an opening at one end, and the first resonance sub-chamber 253a is communicated with the first connection sub-chamber 254a to form a first silencing sub-chamber.

The second silencing element 26 comprises a plurality of second resonance subsection 261 and second connection subsection 262 arranged at intervals. Wherein the second resonance subsection 261 encloses a second resonance subchamber 261a with one end open, the second connection subsection 262 encloses a second connection subchamber 262a with one end open, and the second resonance subchamber 261a is communicated with the second connection subchamber 262a to form a second sound deadening subchamber.

The first resonance portion 253 and the first connection portion 254 of the first muffler component 25 correspond one-to-one to the second resonance portion 261 and the second connection portion 262 of the second muffler component 26 in this order. The open end of the first resonance branch 253 is abutted with the open end of the corresponding second resonance branch 261, and the open end of the corresponding second connection branch 262 is abutted with the open end of the corresponding first connection branch 254, so as to form a plurality of complete resonance cavities and connection cavities arranged alternately.

In this embodiment, the first connecting pipe 251 is disposed at one end of the first silencing part 25 and is communicated with the first resonance sub-chamber 253a and/or the first connecting sub-chamber 254 a; the second connecting pipe 252 is provided at one end of the second silencing part 26 and communicates with the second resonance subchamber 261a and/or the second connecting subchamber 262 a; after the first muffler 25 and the second muffler 26 are connected, the first connection pipe 251 and the second connection pipe 252 are located at both ends of the muffler 24.

In this embodiment, the volumes of the resonant cavities are the same; it is also possible to provide resonant cavities with different volumes, such as 4 resonant cavities, 2 of which are a pair, and the volume of which is denoted as V₁The volume of the other two resonant cavities is denoted by V₂In which V is₂≠V₁. Namely, resonant cavities with two volumes are arranged and are connected in series at intervals through connecting cavities.

The first sound deadening member 25 and the second sound deadening member 26 may be formed by ultrasonic welding.

The first sound-attenuating element 25 and the second sound-attenuating element 26 can also be connected by snapping. As shown in fig. 10 to 12, the first resonance portion 253 of the first silencing member 25 is provided with a snap hole 253b at the edge near the open end thereof; a clamping block 261b is arranged at the edge of the second resonance subsection 261 of the second silencing piece 26 close to the opening end thereof; when the first resonance subsection 253 is abutted with the second resonance subsection 261, the latching hole 253b is engaged with the latching block 261b to connect the first silencing piece 25 and the second silencing piece 26 into a whole. The part of the first silencing piece 25, which is close to the opening end and is far away from the inner edge of the first silencing subchamber, is recessed into the first silencing subchamber to form a mounting table 253 c; the open end of the second silencing element 26 is protruded to the outside of the second silencing subchamber near the inner edge of the second silencing subchamber to form a ring plate 261 c; the mounting platform 253c of the first noise damping member 25 is matched with the annular plate 261c of the second noise damping member 26, so that the cavity wall at the edge of the opening end of the first noise damping member 25 is sleeved on the periphery of the annular plate 261c of the second noise damping member 26, and the sealing performance of the first noise damping member 25 and the second noise damping member 26 is improved.

It should be noted that the cross section of the resonant cavity perpendicular to the flow direction of the gas flow can be circular or square; i.e. the resonance chamber may be cylindrical or cubic.

In addition, in this embodiment, the silencer 24 is disposed in the foaming layer on the side of the inner container 2b far from the low-pressure storage unit 12; above setting can fully extrude first amortization piece 25 and second amortization piece 26 in foaming material foaming process, realizes the self sealss of muffler 24.

Referring to fig. 13 to 20, in the present embodiment, the pump housing 6 includes a first housing 6a and a second housing 6b, and the first housing 6a and the second housing 6b are engaged to be mounted outside the elastic body 7. The pump shell 6 is arranged in a split mode, and is convenient to disassemble and assemble.

The pump shell 6 is provided with a connecting plate 61 fixed with the inner container 2 b; the end of the connecting plate 61 remote from the central axis of the pump housing 6 is provided with a mounting notch 61 a. Along the direction of keeping away from pump case 6 center pin, the region that installation breach 61a is close to connecting plate 61 border is the shrink form, and above setting up can ensure that installation breach 61a has sufficient accommodation space to can effectively fix the installation component in it, avoid droing. In this embodiment, the projection shape of the mounting notch 61a on the connecting plate 61 is a major arc. In the present embodiment, the connection plate 61 is provided on the outer periphery of the first housing 6 a; wherein, the two edges where the first shell 6a and the second shell 6b are butted are both provided with a connecting plate 61.

The refrigerator comprises a first fixing piece 8 and a second fixing piece 9 which are matched with each other; wherein, the first fixed part 8 is fixedly connected with the connecting plate 61 of the pump shell 6, and the first fixed part 8 is arranged on the inner wall of the inner container 2 b; the second fixing member 9 is installed at the outer side of the inner container 2b, and is matched with the first fixing member 8 after passing through the installation hole 21, so as to fix the vacuum pump assembly on the inner container 2 b.

The first fixing member 8 includes a fixing column, fixing plates 81a disposed at both ends of the fixing column, and fixing through holes 81c penetrating the fixing column and the fixing plates 81 a; an annular mounting groove 82 is formed between the fixing plates 81a provided at both end portions of the fixing post. The fixing column of the first fixing member 8 is mounted in the mounting notch 61a of the pump case 6, and the connecting plate 61 of the pump case 6 is mounted in the mounting groove 82 of the first fixing member 8. The size of the fixing plate 81a is larger than the size of the mounting hole 21 of the inner container 2 b. In this embodiment, the fixing plate 81a is provided with a protrusion 83 on the end surface away from the fixing column, so as to reduce the contact area between the fixing plate 81a and the inner container 2b and improve the contact stability.

The second fixing member 9 includes a stopping portion 91a, and a plurality of fixing hooks 91b separately arranged are disposed on one side of the stopping portion 91 a. The fixing hooks 91b are separated from each other by an isolation space 92 to provide a sufficient elastic deformation space for the fixing hooks 91 b. The arrangement path of the fixing hooks 91b is consistent with the shape of the fixing through holes 81c of the first fixing member 8, so that the fixing hooks 91b pass through the fixing through holes 81 c. In this embodiment, the fixing through hole 81c is circular, and the stopping portion 91a is provided with two hooks disposed opposite to each other. The size of the stopping part 91a is larger than that of the mounting hole 21 on the inner container 2b, so that the stopping part 91a is stopped at the outer side of the inner container 2 b.

When the pump shell is installed, the first fixing piece 8 is positioned on the inner side of the inner container 2b, and the fixing column is installed in an installation notch 61a of the connecting plate 61 on the pump shell 6; the stopping portion 91a of the second fixing member 9 is located outside the inner container 2b, and the fixing hook 91b sequentially penetrates through the mounting hole 21 on the inner container 2b and the fixing through hole 81c on the first fixing member 8 located inside the inner container 2b, and then is clamped with the fixing plate 81a on the first fixing member 8 far away from the inner container 2b, so that the second fixing member 9 and the first fixing member 8 are fixed, and the vacuum pump assembly and the inner container 2b are fixed.

In this embodiment, an elastic pad 18 is installed between the stopping portion 91a of the first fixing member 8 and the inner container 2b to effectively absorb vibration and reduce the transmission of vibration. The second fixing member 9 may be an elastic member, or an inner portion thereof may be made of a rigid material, and an outer portion thereof may be made of an elastic material, so as to maintain the connection rigidity and effectively reduce vibration and noise. It should be understood that when the fixing post or fixing plate 81a of the second fixing member 9 is provided with an elastic material at least externally, vibration and noise reduction can be achieved.

The vacuum pump assembly and the inner container are fixed through the clamping connection of the elastic fixing clamping hook 91b of the second fixing piece 9 and the first fixing piece 8 and the matching of the fixing column of the first fixing piece 8 and the mounting notch 61a on the vacuum pump assembly, and the mounting of the vacuum pump assembly is simplified due to the arrangement of the fixing structure; on the other hand, make vacuum pump subassembly and inner bag non-direct contact through above setting up, can effectively avoid the transmission of the produced noise of vacuum pump during operation, optimize the wholeness ability of refrigerator, improve user experience.

Example two

The principle of this embodiment is the same as that of the first embodiment, and the difference is mainly that: the vacuum pump is installed at different positions.

Referring to fig. 21 to 24, in the present embodiment, the vacuum pump 3 is installed in the sealed box 30, the sealed box 30 in which the vacuum pump 3 is installed in the compressor compartment of the refrigerator 1, and the gas passing through the vacuum pump 3 is exhausted to the outside of the refrigerator 1 through the muffler 24.

The sealing box 30 comprises a box body 30a and box end covers 30b positioned at two opposite ends of the box body 30 a; a sealing ring 32 is arranged between the end part of the box body 30a and the box end cover 30 b; the box body 30a and the box end cover 30b are matched to form a containing cavity 31 for containing the vacuum pump 3; the box body 30a is provided with an air inlet pipe 33 and an air outlet pipe 34 which are communicated with the accommodating cavity 31; the vacuum pump 3 is installed in the accommodating cavity 31, the exhaust tube 16 of the vacuum pump 3 is communicated with the air inlet tube 33 on the sealing box 30, and the exhaust tube 17 of the vacuum pump 3 is communicated with the air outlet tube 34 on the sealing box 30. The gas in the outlet pipe 34 is discharged to the outside of the refrigerator 1 through the muffler 24 (the embodiment is the first embodiment).

In this embodiment, the seal box 30 is mounted on the support 35; the support 35 includes a base 35a and a support 35b, wherein the support 35b may be a structure in which a rigid member covers an elastic member, so that on one hand, the connection stability of the support 35b and the base 35a can be ensured, and the mounting stability of the seal box 30 can be ensured; on the other hand, the elastic support column is directly contacted with the compressor bin, so that the vibration can be effectively reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The refrigerator is characterized in that: it includes:

the low-temperature storage compartment is surrounded by the inner container;

a muffler, comprising:

the resonant cavities are distributed at intervals;

2. The refrigerator according to claim 1, wherein: the silencer comprises a first silencing piece and a second silencing piece;

3. The refrigerator according to claim 2, wherein:

the first silencing piece and the second silencing piece are formed through ultrasonic welding.

4. The refrigerator according to claim 2, wherein: the first resonance part of the first silencing piece is provided with a clamping hole at the edge close to the opening end of the first resonance part; a clamping block is arranged at the edge of the second resonance subsection of the second silencing piece close to the opening end of the second resonance subsection; when the first resonance part is butted with the opening of the second resonance part, the clamping hole is matched with the clamping block to connect the first silencing piece and the second silencing piece into a whole.

5. The refrigerator of claim 4, wherein: the second silencing piece is provided with a ring plate near the opening end; the opening end of the first silencing piece is close to the inner edge part of the first silencing subchamber and is sunken into the first silencing subchamber to form a mounting table; the mounting table on the first silencing piece is matched with the annular plate of the second silencing piece, so that the cavity wall at the opening end of the first silencing piece is sleeved on the periphery of the mounting table of the second silencing piece.

6. The refrigerator according to any one of claims 1 to 5, wherein:

a drain pipe is arranged on the refrigerator;

7. The refrigerator according to claim 6, wherein: and a foaming layer is arranged on one side of the inner container, which is far away from the low-pressure storage unit, and the silencer is arranged in the foaming layer.

8. The refrigerator according to claim 7, wherein: an elastic piece is sleeved on the outer side of the vacuum pump, and a pump shell is sleeved on the outer side of the elastic piece;

wherein the stopping part is stopped by the inner container;

9. The refrigerator according to claim 8, wherein:

the pump shell is provided with a connecting plate, and the end part of the connecting plate, which is far away from the central shaft of the pump shell, is provided with an installation notch;

10. The refrigerator according to any one of claims 1 to 5, wherein: the vacuum pump is installed in the seal box, the seal box is installed in the compressor bin of the refrigerator, and gas passing through the vacuum pump is exhausted to the outside of the refrigerator after passing through the silencer.