CN113531990B

CN113531990B - Refrigerator with a door

Info

Publication number: CN113531990B
Application number: CN202010306882.XA
Authority: CN
Inventors: 杨春
Original assignee: Hisense Refrigerator Co Ltd
Current assignee: Hisense Refrigerator Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2023-04-18
Anticipated expiration: 2040-04-17
Also published as: WO2021208430A1; CN113531990A

Abstract

The invention provides a refrigerator, which comprises a low-temperature storage chamber, a low-pressure storage unit, a vacuum pump and an air leakage prevention unit, wherein the low-pressure storage unit, the vacuum pump and the air leakage prevention unit are positioned in the low-temperature storage chamber; the floating column can reciprocate along the first through hole under the action of a spring and air pressure so as to open or close the vent; the invention can open the vent when the vacuum pump exhausts air and close the vent when the air exhaust is finished, thereby effectively avoiding the air leakage of the low-pressure storage unit caused by the air entering the low-pressure storage unit through the vacuum pump after the air exhaust is finished.

Description

Refrigerator with a door

Technical Field

The invention belongs to the technical field of refrigerators, and particularly relates 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 vacuum chamber is in a negative pressure state, gas is sucked back into the gas inlet through the gas outlet of the vacuum pump, and the gas is discharged into the vacuum chamber, so that gas leakage of the vacuum chamber is caused.

The invention is provided in view of the above.

Disclosure of Invention

The invention provides a refrigerator aiming at the technical problem.

In order to achieve the purpose, the invention adopts the technical scheme that:

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;

leak protection gas unit, it includes:

the upright post is provided with a first through hole communicated with the vacuum pump;

the end cover seals the end part of the upright post, which is far away from the vacuum pump, and is provided with a vent hole for communicating the low-pressure storage unit with the first through hole;

the spring is arranged in the first through hole, and one end, close to the vacuum pump, of the spring is fixed with the upright post;

the floating piece is connected with the spring at one end and matched with the end cover at the other end so as to open or close the air vent;

when the low-pressure storage unit is pumped, the floating piece is moved to the direction close to the vacuum pump under the action of air pressure and overcomes the elastic force of the spring, the floating piece is separated from the end cover, and the air vent is opened; the air of the low-pressure storage unit sequentially passes through the air vent, the first through hole and the vacuum pump;

when the low-pressure storage unit stops pumping air, the floating piece is moved in the direction far away from the vacuum pump under the action of the spring and the air pressure, the floating piece is in sealing fit with the end cover, and the air vent is closed.

Preferably, the floating piece comprises a floating column fixed by the spring and a floating plate arranged at one end of the floating piece, and the floating plate is matched with the end cover to open or close the air vent.

Preferably, the floating member is fixed to an end of the spring by a connecting member.

Preferably, the connecting piece comprises a connecting column with one end fixed with the spring and a connecting plate arranged at the other end of the connecting column; and the connecting plate is provided with an assembling hole for installing the floating column.

Preferably, partial region forms the card post along its radial protrusion on the unsteady post, card post with form between the kickboard and hold the holding tank of connecting plate.

Preferably, one side of the end cover close to the upright post is provided with a convex ring matched with the floating plate around the vent hole.

Preferably, the convex ring is provided with a sharp part, the sharp part comprises a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are intersected to form a protruding edge surrounding the convex ring and used for being matched with the floating plate; the first inclined plane connects the protruded ridge and the inner wall surface of the convex ring, and the second inclined plane connects the protruded ridge and the outer wall surface of the convex ring.

Preferably, in the first through hole, an installation block is arranged at the end part of the upright column close to the vacuum pump, and the installation block is fixed with one end of the spring.

Preferably, a first matching plate is arranged on the periphery of one end, close to the end cover, of the upright post, and a second matching plate matched with the first matching plate is arranged on the periphery of the end cover; the first matching plate and the second matching plate are provided with screw holes corresponding in position, and the end cover is fixedly connected with the upright post through screws.

Preferably, the float member is of a rubber material.

Compared with the prior art, the invention has the advantages and positive effects that:

Drawings

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

FIG. 2 is a schematic view of a portion of the refrigerator according to 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 illustrating 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 another angular relative position of the vacuum pump assembly and the low pressure storage unit and the drain pipe of the refrigerator according to the present invention;

FIG. 6 is a view showing the relative positions of a vacuum pump assembly, a low pressure storage unit, a drain pipe and a muffler of the refrigerator according to the present invention;

FIG. 7 is a schematic diagram showing the relative position between the air leakage preventing unit and the low pressure storage unit of the refrigerator according to the present invention;

fig. 8 is a schematic view illustrating an overall structure of an air leakage preventing unit of a refrigerator according to the present invention;

FIG. 9 is an exploded view of an air leakage preventing unit of the refrigerator according to the present invention;

FIG. 10 is an exploded view of another view of the air leakage preventing unit of the refrigerator according to the present invention;

FIG. 11 is another schematic view of the air leakage preventing unit of the refrigerator according to the present invention;

FIG. 12 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 11;

fig. 13 is a schematic structural view of a float member of an air leakage preventing unit of a refrigerator according to the present invention;

FIG. 14 is a sectional view of an end cap of an air leakage preventing unit of a refrigerator according to the present invention;

FIG. 15 is a schematic diagram of a relative position between a second fixing member and an inner container of the refrigerator according to the present invention;

FIG. 16 is a schematic structural view of a vacuum pump assembly and a liner of the refrigerator according to the present invention;

FIG. 17 is another schematic structural view of the vacuum pump assembly and the inner container of the refrigerator according to the present invention;

FIG. 18 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. 19 is an exploded view schematically illustrating a pump case of a refrigerator according to the present invention;

FIG. 20 is a schematic view of a vacuum pump assembly and a first fixing member of the refrigerator according to the present invention;

FIG. 21 is a schematic view of an assembly structure of a vacuum pump assembly and a liner of the refrigerator according to the present invention;

fig. 22 is an enlarged view of the area a in fig. 21.

In the above figures:

a refrigerator 1; a box body 2; a housing 2a; an inner container 2b; 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; the connecting plate 50b61; the mounting notches 61a; a first housing 6a; a second housing 6b; an elastic body 7; a first fixing member 8; a fixed plate 81a; a fixing through hole 81c; a mounting groove 82; a projection 83; a second fixing member 9; a stopper portion 91a; a fixed hook 91b; an isolated space 92; an elastic pad 18; a muffler 24; an air leakage prevention unit 40; a column 41; the first through hole 41a; a first fitting plate 41b; an end cap 42; the air ports 42a; a second mating plate 42b; a convex ring 43; a sharp portion 44; the first slope 44a; a second slope 44b; a ridge 45; a spring 46; a float member 47; the floating plate 47a; the floating columns 47b; a clamp column 47c; an accommodating groove 48; a mounting block 49; a connecting member 50; a connecting post 50a; a connecting plate 50b; fitting holes 50c.

Detailed Description

The present invention is further described below in conjunction with specific examples to enable those skilled in the art to better understand the present invention and to practice it, but the scope of the present invention as claimed is not limited to the scope described in the specific embodiments. 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 for explaining the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is 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 implicitly 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

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 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 invention should not be limited to a particular distribution of the storage compartments of the refrigerator 1, but that the invention may also be applied to other forms of refrigerator 1, such as a refrigerator 1 with a drawer 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 is supported on the bottom wall 52a of the refrigerating compartment 10. A fresh-keeping container 11 with high humidity and suitable for preserving 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 within 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 within the low pressure storage unit 12 or stores items within the low pressure storage unit 12 by pushing or pulling the storage container into or out of the low pressure storage compartment. 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.

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 muffler 24 on the second pipeline to further noise absorption, in order to optimize the wholeness ability of refrigerator, improve user experience.

As shown in fig. 7 to 14, the refrigerator 1 has an air leakage preventing unit 40 disposed between the low pressure storage unit 12 and the vacuum pump 3, and the air leakage preventing unit 40 can prevent air leakage caused by negative pressure formed in the low pressure storage unit 12 after vacuum pumping. In the conventional structure, when the low-pressure storage unit 12 is in a negative pressure state after evacuation, gas is sucked back into the suction pipe 16 through the exhaust pipe 17 of the vacuum pump 3 and is discharged into the low-pressure storage unit 12 through the suction pipe 16, which causes air leakage in the low-pressure storage unit 12 and reduces the evacuation efficiency. The air leakage prevention unit 40 of the embodiment can effectively prevent air leakage caused by suck-back, thereby ensuring the vacuum degree of the low-pressure storage unit 12 and ensuring the fresh-keeping effect of food.

The air leakage preventing unit 40 has a pillar 41, the pillar 41 having a first through hole 41a communicating with the vacuum pump 15; one end of the upright post 41 far away from the vacuum pump 3 is provided with an end cover 42 for sealing the end part of the upright post 41; the cover 42 has a vent hole 42a formed therein, and the vent hole 42a communicates the low pressure storage chamber 14 of the low pressure storage unit 15 with the first through hole 41a. A first matching plate 41b is arranged on the periphery of one end of the upright post 41 close to the end cover 42, and a second matching plate 42b matched with the first matching plate 41b is arranged on the periphery of the end cover 42; the first fitting plate 41b is provided with a screw hole, the second fitting plate 42b is provided with a screw hole matched with the screw hole of the first fitting plate 41b, and the end cover 42 is fixedly connected with the stand column 42 through a screw.

A spring 46 is arranged between the end cover 42 and the bottom of the upright post 41, namely the spring is arranged in the first through hole 41a; a float 47 is provided between the spring 46 and the end cap 42. The float 47 cooperates with the end cap 42 to open or close the vent opening 42a. When the low-pressure storage unit 15 is used for pumping air, the vacuum pump 3 works, negative pressure is formed on one side, close to the vacuum pump 3, of the air leakage prevention unit 40, the pressure in the first through hole 41a is consistent with the pressure in the vacuum pump 3, the pressure in the low-pressure storage unit 15 is larger than the pressure in the first through hole 41a, pressure difference is formed on two sides of the floating piece 47, the pressure difference is larger than the elastic force of the spring 46 and acts on the floating piece 47, and under the action of the pressure difference, the floating piece 47 overcomes the pressure of the spring 46 to move to one side, close to the vacuum pump 3; the float member 47 is separated from the end cap 42, the vent hole 42a is opened, and the air in the low pressure storage unit 15 enters the first through hole 41a through the vent hole 42a, enters the vacuum pump 3 again, and is discharged by the vacuum pump 3.

As a preferred embodiment of the present invention, in the first through hole 41a, the end portion of the column 41 near the vacuum pump 3 is provided with a mounting block 49 fixed to one end of the spring 46; a floating piece 47 is fixed at the other end of the spring 46; the float 47 is T-shaped and includes a float plate 47a for abutting against the end cap 42 and a float post 47b connected to the spring 46, the float plate 47a having a radial dimension greater than that of the float post 47 b. In this embodiment, the floating member 47 is fixed to the end of the spring 46 by a connecting member 50; the connecting piece 50 comprises a connecting column 50a with one end fixed with the spring 46 and a connecting plate 50b which is arranged at the other end of the connecting column 50a and is vertical to the connecting column 50a; the attachment plate 50b is provided with a fitting hole 50c for mounting the floating post 47 b.

The upper part of the floating column 47b is protruded to form a clamping column 47c along the radial direction, and a ring-shaped accommodating groove 48 for accommodating the connecting plate 50b is formed between the clamping column 47c and the floating plate 47 a.

A convex ring 43 is arranged on one side of the end cover 42 close to the upright post 41 and surrounds the air vent 42a, a convex sharp part 44 is arranged at the end part of the convex ring 43 close to the upright post 41, the sharp part 44 comprises a first inclined surface 44a and a second inclined surface 44b, and the first inclined surface 44a and the second inclined surface 44b are intersected to form a convex ridge 45 surrounding the outer end part 41b of the upright post 41; the first inclined surface 44a connects the ridge 45 to the inner wall surface of the convex ring 43, and the second inclined surface 44b connects the ridge 45 to the outer wall surface of the convex ring 43.

The floating plate 47a of the floating member 47 engages the sharp portion 44 on the end cap 42; the arrangement of the above ridge 45 reduces the contact area between the end cover 42 and the floating plate 47a of the floating member 47, and effectively ensures the sealing performance of the contact fit between the convex ring 43 and the floating plate 47a of the floating member 47. When the vacuum pump 3 evacuates, the air in the low-pressure storage unit 12 passes through the vent 42a, the first through hole 41a, and the vacuum pump 3 in this order.

The floating piece 47 is arranged as an elastic material piece so as to deform when the floating piece 47 is acted by external force and acts on the convex edge 45, thereby ensuring that the floating piece 47 is in sealing contact with the convex edge 45; while ensuring that the floating member 47 is restored after being separated from the ridge 45. In this embodiment, the float 47 is of rubber material.

When the air extractor extracts air, the floating piece 47 moves to the direction close to the vacuum pump 3 against the pressure of the spring 46 under the action of the internal and external pressure difference, the floating plate 47a is separated from the protruding edge 45, the air vent 42a is opened, and the air in the low-pressure storage unit 12 enters the first through hole 41a through the air vent 42a on the end cover 42 and the gap between the floating plate 47a and the protruding edge 45, finally enters the first pipeline 14, and then is sequentially discharged through the air extraction pipe 16, the vacuum pump 3, the exhaust pipe 17, the second pipeline 15 and the drain pipe 13.

After the air pumping is finished, the low-pressure storage unit 12 forms negative pressure, the external pressure is greater than the internal pressure of the low-pressure storage unit 12, the floating piece 47 moves towards the inside of the low-pressure storage unit 12 under the action of the spring 46 and the pressure, the floating plate 47a on the floating piece 47 is in sealing fit with the protruding edge 45, the air vent 42a is closed, and the air is effectively prevented from entering the low-pressure storage unit 12 through the exhaust pipe 17 and the air exhaust pipe 16 of the vacuum pump 3, so that the air leakage of the low-pressure storage unit 12 is caused.

The air leakage prevention unit 40 arranged above opens the air vent 42a during air extraction under the action of the low-pressure storage unit 12, and closes the air vent 42a after air extraction is finished; the air leakage prevention unit 40 can effectively avoid air leakage caused by back suction, ensure the vacuum degree of the low-pressure storage unit 12 and ensure the fresh-keeping effect of food.

Referring to fig. 15 to 22, 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 snapped 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 50b61 fixed with the inner container 2b; the end of the connecting plate 50b61 remote from the central axis of the pump housing 6 is provided with a mounting notch 61a. Along the direction of keeping away from pump case 6 center pin, the region that installation breach 61a is close to connecting plate 50b61 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 50b61 is a major arc. In the present embodiment, the connecting plate 50b61 is provided on the outer periphery of the first housing 6a; wherein, the two edges where the first shell 6a and the second shell 6b are butted are both provided with a connecting plate 50b61.

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 50b61 of the pump shell 6, and the first fixed part 8 is arranged on the inner wall of the inner container 2b; the second fixing member 9 is installed outside 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 81a; an annular mounting groove 82 is formed between the fixing plates 81a provided at both end portions of the fixing post. The fixing post of the first fixing member 8 is fitted into the fitting notch 61a of the pump case 6, and the connecting plate 50b61 of the pump case 6 is fitted into the fitting 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 91b. 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 81c. 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 50b61 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.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit 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;

leak protection gas unit, it includes:

the upright post is provided with a first through hole communicated with the vacuum pump; in the first through hole, an installation block is arranged at the end part of the upright column close to the vacuum pump;

the spring is arranged in the first through hole, and one end, close to the vacuum pump, of the spring is sleeved outside the mounting block;

the connecting piece comprises a connecting column at one end and a connecting plate arranged at the other end of the connecting column; the connecting plate is provided with an assembling hole; the connecting column is provided with a cavity communicated with the assembling hole, and the spring is sleeved outside the connecting column;

the floating piece comprises a floating column fixed with the spring and a floating plate arranged at one end of the floating piece, and the floating plate is matched with the end cover to open or close the air vent; the floating column is fixedly connected with the connecting plate through the assembly hole;

when the floating piece closes the air vent, a gap distance is reserved between the connecting column and the mounting block, and the gap distance is smaller than half of the length of the current spring;

when the low-pressure storage unit is pumped, the floating piece overcomes the elastic force of the spring and moves towards the direction close to the vacuum pump under the action of air pressure, the floating piece is separated from the end cover, and the air vent is opened; the air of the low-pressure storage unit sequentially passes through the air vent, the first through hole and the vacuum pump;

2. The refrigerator according to claim 1, wherein: partial region forms the card post along its radial protrusion on the unsteady post, the card post with form between the kickboard and hold the holding tank of connecting plate.

3. The refrigerator according to any one of claims 1-2, wherein: one side of the end cover close to the upright post is provided with a convex ring matched with the floating plate around the vent hole.

4. The refrigerator according to claim 3, wherein: the convex ring is provided with a sharp part, the sharp part comprises a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface are intersected to form a convex edge surrounding the convex ring and used for being matched with the floating plate; the first inclined plane connects the ridge and the inner wall surface of the convex ring, and the second inclined plane connects the ridge and the outer wall surface of the convex ring.

5. The refrigerator according to any one of claims 1-2, wherein: a first matching plate is arranged on the periphery of one end, close to the end cover, of the upright post, and a second matching plate matched with the first matching plate is arranged on the periphery of the end cover; the first matching plate and the second matching plate are provided with screw holes corresponding in position, and the end cover is fixedly connected with the stand column through screws.

6. The refrigerator according to any one of claims 1-2, wherein: the floating piece is made of rubber materials.