WO2021208428A1

WO2021208428A1 - Refrigerator

Info

Publication number: WO2021208428A1
Application number: PCT/CN2020/129905
Authority: WO
Inventors: 杨春; 张鹏
Original assignee: 海信（山东）冰箱有限公司
Priority date: 2020-04-17
Filing date: 2020-11-18
Publication date: 2021-10-21
Also published as: CN111473577A

Abstract

Provided in the present disclosure is a refrigerator, comprising a low temperature storage compartment, a low pressure storage unit located in the low temperature storage compartment, a vacuum pump and an anti-air leakage unit; the anti-air leakage unit comprises an upright column formed on the low pressure storage unit, a first through hole that passes through the stand column and forms an air outlet on the external end of the stand column, a floating column installed in the first through hole, and a second baffle that is disposed at one end of the floating column and cooperates with the external end so as to open or close the air outlet; the radial size of the floating column is less than the radial size of the first through hole, and the floating column and the stand column jointly define an exhaust channel; the external end is sleeved with a cover; an inner cavity of the cover communicates with the exhaust channel and the vacuum pump; and the floating column is capable of reciprocating along the first through hole under the action of air pressure so as to open or close the air outlet.

Description

refrigerator

Cross-references to related applications

The present disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office on April 17, 2020, with an application number of 202010304714.7 and an invention title of "Refrigerator", the entire content of which is incorporated into the present disclosure by reference.

Technical field

The present disclosure belongs to the technical field of refrigerators, and particularly relates to a refrigerator.

Background technique

As an indispensable electrical product in home life, refrigerators occupy an important share of the market. With the improvement of consumers’ requirements for the quality of fresh foods, the requirements for refrigerators are also getting higher and higher. The refrigerators are required to have higher configurations and more powerful functions. The long storage period ensures the freshness of the ingredients and prevents the loss of nutrients.

In order to better store food, a vacuum chamber has been developed in the refrigerator, and the vacuum chamber is evacuated through a vacuum device. The main function of vacuuming is to deoxygenate the vacuum chamber to prevent food from spoiling. When the vacuum chamber is in a negative pressure state, the gas is sucked into the air inlet through the exhaust port of the vacuum pump, and the gas is discharged into the vacuum chamber, causing air leakage in the vacuum chamber.

Summary of the invention

Some embodiments of the present disclosure provide a refrigerator, including:

A low-temperature storage compartment, the low-temperature storage compartment is enclosed by an inner liner;

A low-pressure storage unit, located in the low-temperature storage room, can be evacuated to form a pressure lower than the atmospheric pressure outside the refrigerator to facilitate the preservation of food;

A vacuum pump, which is connected to the low-pressure storage unit, and is used to draw air out of the low-pressure storage unit;

Anti-leakage unit, including:

A column formed on the low-pressure storage unit and having an inner end located inside the low-pressure storage unit and an outer end located outside the low-pressure storage unit;

A first through hole, which penetrates the upright column and forms an air outlet at the outer end of the upright column;

The floating column is installed in the first through hole; and the radial size of the floating column is smaller than the radial size of the first through hole, and the floating column and the vertical column jointly define an air extraction channel;

The second baffle is arranged at one end of the floating column and is used to cooperate with the outer end to open or close the air outlet;

The baffle cover is sleeved outside the outer end part and is hermetically connected with the low-pressure storage unit; the inner cavity of the baffle cover communicates with the suction channel and the vacuum pump;

When the low-pressure storage unit is pumping air, the floating column moves toward the vacuum pump under the action of air pressure, the second baffle is separated from the outer end, and the air outlet is opened; the low-pressure storage The air of the unit sequentially passes through the air extraction channel, the air outlet, the inner cavity of the baffle, and the vacuum pump;

When the low-pressure storage unit stops pumping air, the floating column is moved away from the vacuum pump under the action of air pressure, the second baffle is sealed and fitted with the outer end, and the air outlet is closed.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of a refrigerator provided by some embodiments of the present disclosure;

2 is a schematic diagram of a part of the structure of a refrigerator provided by some embodiments of the present disclosure;

3 is a schematic structural diagram of the relative positions of the drain pipe and the inner container of the refrigerator provided by some embodiments of the present disclosure;

4 is a structural schematic diagram of the relative positions of the vacuum pump assembly, the low-pressure storage unit, and the drain pipe of the refrigerator provided by some embodiments of the present disclosure;

FIG. 5 is another angle of the relative position structure of the vacuum pump assembly, the low-pressure storage unit, and the drain pipe of the refrigerator provided by some embodiments of the present disclosure;

Fig. 6 is a relative position structure of a vacuum pump assembly, a low-pressure storage unit, a drain pipe, and a muffler of a refrigerator provided by some embodiments of the present disclosure;

7 is a schematic diagram of the relative positional relationship between the air leakage prevention unit and the low-pressure storage unit of the refrigerator provided by some embodiments of the present disclosure;

Figure 8 is a partial cross-sectional view of an air leakage prevention unit of a refrigerator provided by some embodiments of the present disclosure;

FIG. 9 is a schematic diagram of an exploded structure of an air leakage prevention unit of a refrigerator provided by some embodiments of the present disclosure;

FIG. 10 is a schematic diagram of an exploded structure from another perspective of the air leakage prevention unit for opening a refrigerator provided by some embodiments of the present disclosure;

11 is a schematic structural diagram of the relative positions of the air leakage prevention unit, the air leakage prevention unit, and the vacuum pump of the refrigerator provided by some embodiments of the present disclosure;

Fig. 12 is an enlarged view of area B in Fig. 11;

13 is a schematic structural diagram of a floating member of an air leakage prevention unit of a refrigerator provided by some embodiments of the present disclosure;

14 is a schematic structural diagram from another perspective of the floating member of the air leakage prevention unit of the refrigerator provided by some embodiments of the present disclosure;

15 is a schematic diagram of the relative positional relationship between the second fixing member and the inner container of the refrigerator provided by some embodiments of the present disclosure;

16 is a schematic diagram of the structure of the vacuum pump assembly and the inner container of the refrigerator provided by some embodiments of the present disclosure;

FIG. 17 is another structural schematic diagram of the vacuum pump assembly and the inner container of the refrigerator provided by some embodiments of the present disclosure;

18 is a schematic diagram of an exploded structure of a vacuum pump assembly, a first fixing part, and a second fixing part of a refrigerator provided by some embodiments of the present disclosure;

19 is a schematic diagram of an exploded structure of a pump housing of a refrigerator provided by some embodiments of the present disclosure;

20 is a schematic diagram of the cooperation structure of the vacuum pump assembly and the first fixing member of the refrigerator provided by some embodiments of the present disclosure;

21 is a schematic diagram of the assembly structure of the vacuum pump assembly and the inner container of the refrigerator provided by some embodiments of the present disclosure;

Fig. 22 is an enlarged view of area A in Fig. 21.

Detailed ways

The present disclosure will be further described below in conjunction with specific examples, so that those skilled in the art can better understand and implement the present disclosure, but the scope of protection claimed by the present disclosure is not limited to the scope described in the specific embodiments. . It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other arbitrarily if there is no conflict.

It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present disclosure are only used to explain in a specific posture (as shown in the accompanying drawings) If the relative positional relationship and movement conditions of the components below change, the directional indication will also change accordingly.

In addition, the descriptions related to "first", "second", etc. in the present disclosure are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist. , Is not within the scope of protection required by this disclosure.

Fig. 1 is a schematic diagram of the overall structure of a refrigerator provided by some embodiments of the present disclosure; Fig. 2 is a schematic diagram of a partial structure of a refrigerator provided by some embodiments of the present disclosure. 1 to 2, a refrigerator 1 includes a heat-insulating cabinet 2, and the cabinet 2 includes an outer shell 2 a, an inner container 2 b, and a thermal insulation layer (not shown) between the two. The box 2 defines a plurality of insulated low-temperature storage compartments to store food and other items. In this embodiment, these low-temperature storage compartments are respectively the refrigerating compartment 10 at the upper part and the freezing compartment at the bottom. The low-temperature storage compartment can be closed by its corresponding door. In the present disclosure, the refrigerating chamber 10 is provided with a refrigerating side-by-side door, and the freezing chamber is provided with a freezing side-by-side door.

It should be understood that the present disclosure should not be limited to the specific distribution form of the storage compartments of the refrigerator 1, and the present disclosure may also be applied to other forms of refrigerators 1, such as refrigerators 1 with drawer-type doors.

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 throttling device (not shown), and an evaporator (not shown). Since such a refrigeration system is a well-known technology in the prior art, further description thereof is omitted. Of course, the refrigerator 1 can also use other forms of refrigeration systems (such as absorption refrigeration systems, thermoelectric refrigeration systems).

The refrigerator 1 is provided with a low-pressure storage unit 12 that can be maintained in a low-pressure state, and a vacuum pump assembly for drawing gas from the low-pressure storage unit 12. The vacuum pump assembly may include a vacuum pump 3 and a pipeline connected between the vacuum pump 3 and the low-pressure storage unit 12.

In some embodiments of the present disclosure, the low-pressure storage unit 12 is provided in the refrigerating compartment 10. It should be understood that, in other embodiments, the low-pressure storage unit 12 may also be arranged in another low-temperature storage room, for example, a temperature changing room whose temperature range can be switched between a refrigerating temperature zone and a freezing temperature zone.

The low-pressure storage unit 12 is located at the bottom of the refrigerating compartment 10 and is supported on the bottom wall 52a of the refrigerating compartment 10. An adjacent position of the low-pressure storage unit 12 may be provided with a fresh-keeping container 11 suitable for storing vegetables and other foods; the low-pressure storage unit 12 and the fresh-keeping container 11 are arranged side by side at the bottom of the refrigerator compartment 10.

The low-pressure storage unit 12 may be constructed independently of the box body 2 and then assembled in the box body 2. Referring to FIG. 2, in this 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-keeping container 11 is slightly smaller than the width of the refrigerating compartment 10, thereby effectively distributing the refrigerating compartment The bottom space of 10 allows the fresh-keeping container 11 and the low-pressure storage unit 12 to be inserted into the refrigerating compartment 10 or pulled out of the refrigerating compartment 10.

The low-pressure storage unit 12 includes a casing 4 fixed in the refrigerating compartment 10 and a door 5 connected to the casing 4 and capable of being pushed into or out of the refrigerating compartment 10.

2, the housing 4 has a box-shaped structure, which defines a flat low-pressure storage room with a food access port. In this embodiment, the access port is located at the front end of the housing 4 facing the user. The outer side of the box wall of the housing 4 is provided with grid-like reinforcing ribs to increase the strength of the box wall of the housing 4 and avoid the deformation of the housing 4 due to the pressure difference between the inside and the outside after being evacuated.

The door body 5 can be provided with a ring-shaped sealing element, so that when the door body 5 is in the closed position, an airtight joint is formed between the housing 4 and the door body 5 to prevent gas from entering from the joint between the housing 4 and the door body 5 Low-pressure storage room. The sealing element may also be provided at the front end of the housing 4.

When the low-pressure storage chamber is closed by the door body 5 and the vacuum pump assembly is activated, the gas in the low-pressure storage chamber is evacuated, and the low-pressure storage chamber is in a low-pressure state. According to a preferred embodiment of the present disclosure, at the end of the evacuation procedure, the pressure in the low-pressure storage chamber is between a standard atmospheric pressure and an absolute vacuum. Since the air pressure in the low-pressure storage chamber is lower than the standard atmospheric pressure, those skilled in the art also commonly call it a "vacuum chamber".

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

3 is a schematic structural diagram of the relative positions of the drain pipe and the inner liner of the refrigerator provided by some embodiments of the present disclosure; FIG. 4 is a schematic structural diagram of the relative positions of the vacuum pump assembly, the low-pressure storage unit and the drain pipe of the refrigerator provided by some embodiments of the present disclosure; 5 is another angle of the relative position structure of the vacuum pump assembly, the low-pressure storage unit and the drain pipe of the refrigerator provided by some embodiments of the present disclosure; FIG. 6 is the vacuum pump assembly, the low-pressure storage unit, and the drain of the refrigerator provided by some embodiments of the present disclosure The relative position structure of the pipe and the muffler. As shown in FIGS. 3-6, the refrigerator 1 has a drain pipe 13 for draining condensed water inside the refrigerator 1. One end of the vacuum pump assembly is connected with the low-pressure storage unit 12, and the other end is connected with the drain pipe 13 of the refrigerator 1. The vacuum pump assembly operates to draw out the air in the low-pressure storage unit 12 and deliver it to the drain pipe 13, and finally discharge the air from the refrigerator 1 through the drain pipe 13. In order to prevent the gas extracted from the low-pressure storage unit 12 from being directly discharged into the interior of the refrigerator 1, the food in other areas in the refrigerating compartment 10 will odor each other, which will affect the freshness preservation effect of the food.

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 the second pipe 15 is provided with a silencer 24.

The vacuum pump assembly is arranged on the inner container 2b of the refrigerating compartment 10 and is close to the bottom of the low-pressure storage unit 12. The upper part of the rear wall of the inner container 2b of the refrigerating compartment 10 is recessed backwards to form an accommodating cavity 22 for accommodating the vacuum pump assembly; In some embodiments of the present disclosure, the vacuum pump assembly is located in the accommodating cavity 22, and a separation space 23 is formed between the cavity wall of the accommodating cavity 22, so as to reduce the direct contact between the vacuum pump assembly and the inner container 2b and reduce the transmission of vibration. , Effective noise reduction.

The vacuum pump assembly includes a vacuum pump 3, a pump casing 6 and an elastic body 7 sleeved between the vacuum pump 3 and the pump casing 6. The vacuum pump 3 is provided with an exhaust pipe 16 connected with the first pipe 14 and an exhaust pipe 17 connected with the second pipe 15. The suction pipe 16 and the exhaust pipe 17 are arranged side by side, and are located at the same end of the vacuum pump 3. When the vacuum pump is working, the air in the low-pressure storage unit 12 sequentially passes through the first pipe 14, the suction pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipe 15, and the silencer 24 arranged on the second pipe 15 finally It is transported to the drainage pipe 13 and finally discharged from the box 2 through the drainage pipe 13. In some embodiments of the present disclosure, an elastic body is sheathed on the outside of the vacuum pump. The elastic body can absorb vibration on the vacuum pump to reduce the noise generated during the operation of the vacuum pump; in addition, a silencer 24 is provided on the second pipeline to further Absorb noise to optimize the overall performance of the refrigerator and improve user experience.

7 is a schematic diagram of the relative positional relationship between the air leakage prevention unit and the low-pressure storage unit of the refrigerator provided by some embodiments of the present disclosure; FIG. 8 is a partial sectional view of the air leakage prevention unit of the refrigerator provided by some embodiments of the disclosure; FIG. 9 is The exploded structure diagram of the air leakage prevention unit of the refrigerator provided by some embodiments of the present disclosure; FIG. 10 is another perspective view of the exploded structure diagram of the air leakage prevention unit for opening the refrigerator provided by some embodiments of the present disclosure; FIG. 11 is some embodiments of the present disclosure Example provides a schematic structural diagram of the relative positions of the air leakage prevention unit, air leakage prevention unit, and vacuum pump of the refrigerator; FIG. 12 is an enlarged view of area B in FIG. 11; A schematic structural diagram of the floating member; FIG. 14 is a schematic structural diagram from another perspective of the floating member of the air leakage prevention unit of a refrigerator provided by some embodiments of the present disclosure.

As shown in FIGS. 7-14, the refrigerator 1 has an air leakage prevention unit 40 disposed on the back of the low-pressure storage unit 12, and the air leakage prevention unit 40 can avoid air leakage caused by negative pressure formed in the low-pressure storage unit 12 after vacuuming. In the existing structure, after vacuuming, when the low-pressure storage unit 12 is in a negative pressure state, the gas is sucked into the suction pipe 16 through the exhaust pipe 17 of the vacuum pump 3, and the gas is discharged into the low-pressure storage unit 12 through the suction pipe 16. , Causing air leakage in the low-pressure storage unit 12, reducing the efficiency of vacuuming. The air leakage prevention unit 40 of this embodiment can effectively avoid air leakage caused by suction, thereby ensuring the vacuum degree of the low-pressure storage unit 12 and ensuring the freshness preservation effect of food.

The air leakage prevention unit 40 has a column 41 protruding from the rear wall of the low-pressure storage unit 12. The column 41 includes an inner end 41a located inside the low-pressure storage chamber 14 and an outer end 41b located outside the low-pressure storage unit 12; the column 41 has The first through hole 42 communicated with the low pressure storage chamber 14 of the low pressure storage unit 12; the first through hole 42 penetrates the column 41 and forms an air outlet 42a at the outer end 41b; an air outlet 42b is provided on the inner end 41a, A plurality of vents 42b are distributed around the inner end 41a; in this embodiment, the vents 42b are arranged as notches, and the plurality of notches are distributed around the inner end 41a and penetrate through the column side wall of the inner end 41a of the upright column 41. The outer end 41b has a protruding sharp portion 43. The sharp portion 43 includes a first inclined surface 43a and a second inclined surface 43b. The first inclined surface 43a and the second inclined surface 43b intersect to form a protruding edge 44 surrounding the outer end 41b of the column 41; The first inclined surface 43 a connects the rib 44 and the outer end 41 b close to the inner wall surface of the first through hole 42, and the second inclined surface 43 b connects the rib 44 and the outer end 41 b away from the outer wall surface of the first through hole 42. Wherein, the rear wall of the low-pressure storage unit 12 is provided with screw posts 55, and the screw posts 55 are distributed on the periphery of the outer end 41 b of the upright post 41.

A raised ring 51 is provided around the outer end 41b of the column 41, and the outer cover of the raised ring 51 is provided with a shield 52; a sealing ring 53 is provided between the shield 52 and the rear wall of the low-pressure storage unit 12 to ensure that the shield 52 is connected to the low pressure The tightness of the storage unit 12 connection. The inner cavity of the baffle 52 communicates with the first through hole 42 and the vacuum pump 3; the baffle 52 includes a bottom wall 52a and a side baffle wall 52b arranged around the bottom wall 52a; the bottom wall 52a is provided with connecting pipes 52c connecting both sides of the bottom wall 52a, The connecting pipe 52c communicates with the suction pipe 16 of the vacuum pump 3; the side baffle wall 52b is sleeved outside the outer end 41b of the column 41 and is matched with the sealing ring 53. The side baffle wall 52b is provided with a matching plate 52d, and the matching plate 52d is provided with screw holes corresponding to the screw posts 55 on the rear wall of the low-pressure storage unit 12, and the cover 52 is fixed to the rear of the low-pressure storage unit 12 by screws. On the wall.

A floating member 56 is installed in the first through hole 42 of the column 41, and the floating member 56 moves back and forth along the central axis of the first through hole 42 under pressure to open or close the first through hole 42.

The floating member 56 includes a floating column 57. The radial size of the floating column 57 is smaller than the radial size of the first through hole 42 to form an air extraction channel 70 between the floating column 57 and the upright column 41; The air port 42a communicates with the inner cavity of the shield 52. A first baffle 58 is provided on the periphery of one end of the floating column 57, and a second baffle 59 is provided on the periphery of the other end. A receiving groove 50 is formed between the first baffle 58 and the second baffle 59. The floating column 57 of the floating member 56 is installed in the first through hole 42 of the column 41, the column 41 is installed in the receiving groove 50, and the first baffle 58 is matched with the inner end 41a of the column 41, and the second baffle 59 is The outer end 41b of the column 41 is matched; the arrangement of the rib 44 reduces the contact area between the end of the column 41 and the second baffle 59 of the floating member 56, and effectively ensures that the outer end 41b of the column 41 and the floating member 56 are in contact with each other. The second baffle 59 is in contact with the tightness of the fit. The floating column 57 of the floating member 56 is provided with a blind hole 57a to reduce the wall thickness of the floating member 56; that is, to reduce the overall weight of the floating member 56 to ensure that it moves under the action of a pressure difference. In this embodiment, the open end of the blind hole 57a is provided at the end of the floating member 56 away from the blocking cover 52. The air in the low-pressure storage unit 12 passes through the air suction channel 70, the air outlet 42a, the inner cavity of the baffle 52, and the vacuum pump 3 in sequence.

The floating member 56 is set as an elastic material to deform when the floating member 56 is subjected to an external force and the rib 44, so as to ensure that the floating member 56 and the rib 44 are in hermetic contact; at the same time, it is ensured that the floating member 56 and the rib 44 are restored after being separated. Undisturbed. In this embodiment, the floating member 56 is made of silicone material, which has better resilience.

When the air extraction device draws air, the floating member 56 moves backward under the action of the internal and external pressure difference, the second baffle 59 is separated from the rib 44, the air outlet 42a is opened, the air extraction channel 70 is opened, and the air in the low-pressure storage unit 12 is opened. Enter the air extraction channel 70 through the vent 42b (notch) on the inner end 41a of the column 41, enter the inner cavity of the shield 52 through the gap between the second baffle 59 and the rib 44, and finally pass through the connecting pipe 52c enters the first pipeline 14, and then is discharged through the suction pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipe 15, and the drain pipe 13 in sequence.

After the air extraction is completed, the external pressure is greater than the internal pressure of the low-pressure storage unit 12. Under the action of the pressure, the floating member 56 moves to the inside of the low-pressure storage unit 12. The air port 42a is closed and the air suction channel 70 is closed, which effectively prevents the gas from entering the low-pressure storage unit 12 through the exhaust pipe 17 and the suction pipe 16 of the vacuum pump 3, causing the low-pressure storage unit 12 to leak.

When the floating member 56 is in a natural state, the groove width of the receiving groove 50 is not less than the overall length of the column 41 to ensure that under the action of the internal and external pressure difference, the floating member 56 has a moving space along the center axis of the column 41, thereby enabling the second The baffle 59 and the protruding rib 44 are in a state of sealing fit and separation, that is, to ensure that the first through hole 42 (vent 42b) is in an open state when pumping, and the first through hole 42 (vent 42b) is at the end of pumping. Is closed.

When the floating member 56 is in a natural state (not subject to external force), when the groove width of the receiving groove 50 is smaller than the overall length of the column 41, it is necessary to ensure that the floating member 56 is installed in the first through hole 42 and is not affected by other external forces. When the deformation is smaller than the maximum deformation of the floating member 56; to ensure that under the action of the internal and external pressure difference, when the floating member 56 moves outward along the center axis of the column 41, there is a separation state between the second baffle 59 and the protruding edge 44 , That is, to ensure that the first through hole 42 (vent 42b) is in an open state when pumping air. Specifically, when the floating column 57 is not subjected to external force, the groove width of the receiving groove 50 is greater than the overall length of the upright column 41.

The anti-leakage unit 40 provided above opens the first through hole 42 (vent 42b) during pumping under the action of the low-pressure storage unit 12, and closes the first through hole 42 (vent 42b) after the end of pumping; The above air leakage prevention unit 40 can effectively avoid air leakage caused by suction, ensure the vacuum degree of the low-pressure storage unit 12, and ensure the preservation effect of food.

15 is a schematic diagram of the relative positional relationship between the second fixing member and the inner liner of the refrigerator provided by some embodiments of the present disclosure; FIG. 16 is a schematic diagram of the vacuum pump assembly and the inner liner of the refrigerator provided by some embodiments of the present disclosure; Another structural schematic diagram of the vacuum pump assembly and the inner container of the refrigerator provided by some embodiments is disclosed; FIG. 18 is an exploded structural schematic diagram of the vacuum pump assembly, the first fixing member and the second fixing member of the refrigerator provided by some embodiments of the disclosure; FIG. 19 FIG. 20 is a schematic diagram of the structure of the vacuum pump assembly and the first fixing member of the refrigerator provided by some embodiments of the present disclosure; FIG. 21 is a schematic diagram of the refrigerator provided by some embodiments of the present disclosure. Schematic diagram of the assembly structure of the vacuum pump assembly and the inner tank; Figure 22 is an enlarged view of area A in Figure 21.

15-22, in this embodiment, the pump housing 6 includes a first housing 6a and a second housing 6b. The first housing 6a and the second housing 6b are clamped to be mounted on the outside of the elastic body 7. The above pump casing 6 is arranged in a split type, which is convenient for disassembly and assembly.

The pump housing 6 is provided with a connecting plate 61 fixed to the inner liner 2b; the end of the connecting plate 61 away from the central axis of the pump housing 6 is provided with an installation notch 61a. Along the direction away from the central axis of the pump casing 6, the area of the mounting notch 61a close to the edge of the connecting plate 61 is contracted. The above arrangement can ensure that the mounting notch 61a has enough accommodating space and can effectively fix the installed components in it to avoid falling off. In this embodiment, the projection shape of the installation notch 61a on the connecting plate 61 is a superior arc shape. In this embodiment, the connecting plate 61 is provided on the outer periphery of the first housing 6a; wherein, the two edges where the first housing 6a and the second housing 6b are opposite are provided with connecting plates 61.

The refrigerator includes a first fixing member 8 and a second fixing member 9 that cooperate with each other; wherein the first fixing member 8 is fixedly connected to the connecting plate 61 of the pump housing 6, and the first fixing member 8 is installed on the inner wall of the inner container 2b; The two fixing members 9 are installed on the outer side of the inner tank 2b, and after passing through the mounting hole 21, they cooperate with the first fixing member 8 to fix the vacuum pump assembly on the inner tank 2b.

The first fixing member 8 includes a fixing column, a fixing plate 81a disposed at both ends of the fixing column, a fixing through hole 81c penetrating the fixing column and the fixing plate 81a; the fixing plates 81a disposed at both ends of the fixing column form a ring shape的installation slot 82. The fixing post of the first fixing member 8 is installed in the installation notch 61 a on the pump casing 6, and the connecting plate 61 on the pump casing 6 is installed in the installation groove 82 of the first fixing member 8. Wherein, the size of the fixing plate 81a is larger than the size of the mounting hole 21 on the inner liner 2b. In this embodiment, the end surface of the fixing plate 81a away from the fixing column is provided with a protrusion 83 for reducing the contact area between the fixing plate 81a and the inner liner 2b and improving the contact stability.

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

During installation, the first fixing member 8 is located inside the inner liner 2b, and the fixing post is installed in the installation notch 61a of the connecting plate 61 on the pump housing 6; The hook 91b sequentially passes through the mounting hole 21 on the inner liner 2b, the fixing through hole 81c on the first fixing member 8 located inside the inner liner 2b, and then engages with the fixing plate 81a on the first fixing member 8 away from the inner liner 2b Then, the second fixing member 9 and the first fixing member 8 are fixed, that is, the vacuum pump assembly and the inner container 2b are fixed.

In some embodiments of the present disclosure, an elastic gasket 18 is installed between the stop portion 91a of the first fixing member 8 and the inner liner 2b to effectively absorb vibration and reduce the transmission of vibration. The second fixing member 9 may be an elastic member, or a rigid material inside and an elastic material outside, so as to effectively reduce vibration and noise while maintaining the rigidity of the connection. It should be understood that when at least the outside of the fixing column or fixing plate 81a of the second fixing member 9 is provided with an elastic material, vibration reduction and noise reduction can be achieved.

The above is achieved through the engagement of the elastic fixing hook 91b of the second fixing member 9 with the first fixing member 8, and the cooperation of the fixing post of the first fixing member 8 with the installation notch 61a on the vacuum pump assembly. On the one hand, the above fixing structure simplifies the installation of the vacuum pump assembly; on the other hand, the above arrangement makes the vacuum pump assembly indirectly contact the inner container, which can effectively avoid the transmission of noise generated when the vacuum pump is working, and optimize the overall refrigerator Performance and improve user experience.

The above are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure in other forms. Any person familiar with the profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solutions of the present disclosure still fall within the protection scope of the technical solutions of the present disclosure.

Claims

The refrigerator is characterized in that it includes:

A low-temperature storage compartment, the low-temperature storage compartment is enclosed by an inner liner;

A low-pressure storage unit, located in the low-temperature storage room, can be evacuated to form a pressure lower than the atmospheric pressure outside the refrigerator to facilitate the preservation of food;

A vacuum pump, which is connected to the low-pressure storage unit, and is used to draw air out of the low-pressure storage unit;

Anti-leakage unit, which includes:

A column formed on the low-pressure storage unit and having an inner end located inside the low-pressure storage unit and an outer end located outside the low-pressure storage unit;

A first through hole, which penetrates the upright column and forms an air outlet at the outer end of the upright column;

The floating column is installed in the first through hole; and the radial size of the floating column is smaller than the radial size of the first through hole, and the floating column and the vertical column jointly define an air extraction channel;

The second baffle is arranged at one end of the floating column and is used to cooperate with the outer end to open or close the air outlet;

A baffle cover is sleeved outside the outer end portion and is hermetically connected with the low-pressure storage unit; the inner cavity of the baffle cover communicates with the suction channel and the vacuum pump;

When the low-pressure storage unit is pumping air, the floating column is moved toward the vacuum pump under the action of air pressure, the second baffle is separated from the outer end, and the air outlet is opened; the low-pressure storage The air of the unit passes through the air extraction channel, the air outlet, the inner cavity of the baffle, and the vacuum pump in sequence;

When the low-pressure storage unit stops pumping air, the floating column is moved away from the vacuum pump under the action of air pressure, the second baffle is sealed to fit with the outer end, and the air outlet is closed.
The refrigerator according to claim 1, wherein the outer end has a protruding sharp portion, the sharp portion includes a first inclined surface and a second inclined surface, the first inclined surface and the second inclined surface intersect to form a circle The outer end portion is used to cooperate with the protruding edge of the second baffle; the first inclined surface connects the protruding edge and the inner wall surface of the outer end portion close to the first through hole, the The second inclined surface connects the protruding edge and the outer wall surface of the outer end away from the first through hole.
The refrigerator according to claim 1 or 2, wherein the side wall of the inner end portion is provided with a vent.
The refrigerator according to claim 3, wherein a first baffle is provided on the end of the floating column away from the blocking cover, and an accommodation space is formed between the first baffle and the second baffle. The receiving groove of the upright post; the first baffle is used to cooperate with the inner end of the upright post.
The refrigerator according to claim 4, wherein the width of the accommodating groove is greater than the length of the upright column when the floating column is not subjected to external force.
The refrigerator according to claim 1 or 2, wherein the floating column is provided with a blind hole, and the open end of the blind hole is provided at an end of the blind hole away from the blocking cover.
The refrigerator according to claim 1 or 2, wherein the blocking cover includes a bottom wall and a side blocking wall surrounding the bottom wall; the bottom wall is provided with connecting pipes connecting both sides of the bottom wall, and The connecting pipe is communicated with the vacuum pump; the side baffle wall is sleeved outside the outer end of the upright column.
8. The refrigerator according to claim 7, wherein a sealing ring is provided between the side blocking wall of the blocking cover and the low-pressure storage unit.
The refrigerator according to claim 7, wherein the pressure storage unit is provided with a screw column, and the screw column is provided on the periphery of the outer end portion;

The side blocking wall of the blocking cover is provided with a matching plate, and the matching plate is provided with screw holes corresponding to the screw posts on the low-pressure storage unit, and the blocking cover is fixed to the low-pressure storage unit by screws.
The refrigerator according to claim 1, wherein a convex ring is provided around the outer end of the upright column, and the blocking cover is sleeved outside the convex ring.