CN114076439A

CN114076439A - Refrigerator and air suction joint installation method thereof

Info

Publication number: CN114076439A
Application number: CN202010796125.5A
Authority: CN
Inventors: 杨春; 王海燕; 韩丽丽; 潘毅广; 鲍雨锋; 刘铁伟; 张建; 张善房; 孙彬; 职东宁; 李涛
Original assignee: Hisense Shandong Refrigerator Co Ltd
Current assignee: Hisense Shandong Refrigerator Co Ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2022-02-22
Anticipated expiration: 2040-08-10
Also published as: CN114076439B

Abstract

The invention provides a refrigerator, which comprises a refrigerator body, a refrigerator door, a low-pressure storage unit, an air exhaust device and an air exhaust joint, wherein the refrigerator door is rotatably arranged on the refrigerator body; the air extraction joint comprises a base, a cover plate and a connecting pipeline; wherein, the base is provided with a butt joint port and a first convex ring surrounding the butt joint port; the cover plate is sealed on the base, a concave ring matched with the first convex ring is arranged on the cover plate, and a sealing ring is arranged between the concave ring and the end part of the first convex ring; one end of the connecting pipeline is communicated with the butt joint port, and the other end of the connecting pipeline penetrates through the base and is communicated with the air pumping pipeline; the invention is provided with the air exhaust joint which can be overturned to be connected with the low-pressure storage unit for vacuumizing, and the matching of the cover plate, the base and the air exhaust pipeline of the air exhaust joint effectively limits the volume of the air exhaust joint, so that the air exhaust joint has good sealing property and compact and exquisite structure, and is convenient for the connection of the air exhaust joint and the low-pressure storage unit for vacuumizing, thereby prolonging the food preservation time.

Description

Refrigerator and air suction joint installation method thereof

Technical Field

The invention belongs to the technical field of household refrigerators, and particularly relates to a refrigerator and an air extraction joint installation method thereof.

Background

At present, the improvement of the quality requirement of fresh food by consumers also puts forward a new requirement on the configuration of a refrigerator in order to meet the requirements of the consumers, so that the fresh food stored in the refrigerator can be expected to have a longer storage period, thereby ensuring the freshness of the food material and preventing the loss of nutrient components.

The invention is provided in view of the above.

Disclosure of Invention

The invention provides a refrigerator aiming at the technical problems.

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

a refrigerator, comprising:

a cabinet defining an insulated low temperature storage compartment;

the box door is rotatably arranged on the box body so as to open or close the low-temperature storage room;

the low-pressure storage unit is arranged at one side of the refrigerator door close to the low-temperature storage room, and air can be pumped into the low-pressure storage unit to form air pressure lower than the external atmospheric pressure of the refrigerator so as to be beneficial to keeping food fresh;

the air extraction device comprises a vacuum pump and an air extraction pipeline connected with the vacuum pump;

the air extraction joint is arranged on the box door in a turnable way so as to be connected with or separated from the low-pressure storage unit; the air extraction joint comprises:

a base defining a receiving portion having an opening at one end; the bottom of the accommodating part is provided with a butt joint port and a first convex ring surrounding the butt joint port;

one end of the connecting pipeline is communicated with the interior of the first convex ring, and the other end of the connecting pipeline penetrates out of the base and is communicated with the air pumping pipeline;

the cover plate is arranged in the accommodating part of the base and is used for sealing the opening end of the base; a concave ring matched with the first convex ring is arranged on the cover plate, and a sealing ring is arranged between the concave ring and the end part of the first convex ring;

the air suction connector is connected with the low-pressure storage unit, the vacuum pump works, and air in the low-pressure storage unit sequentially passes through the butt joint port, the connecting pipeline, the air suction pipeline and the vacuum pump.

Preferably, a third convex ring is arranged on the cover plate and is arranged on an inner ring of the concave ring; the end part of the third convex ring far away from the cover plate and the bottom of the accommodating part jointly define a ventilation gap;

one of a magnet block and a ferromagnetic piece is arranged in the third convex ring; the other one of the magnet block and the ferromagnetic piece is arranged on the box door; when the air exhaust joint is turned to be close to the box door, the ferromagnetic piece and the magnet block are interacted, and the air exhaust joint is adsorbed on the box door.

Preferably, a second convex ring is arranged in the first convex ring on the base, the butt joint port is arranged in the surrounding area of the second convex ring, and a connecting port for communicating the inner side and the outer side of the second convex ring is arranged on the second convex ring;

the second convex ring is sleeved in a third convex ring on the cover plate and corresponds to a magnet block or a ferromagnetic piece in the third convex ring; the second raised ring and the third raised ring jointly define an air outlet flow channel.

Preferably, the base comprises a bottom plate and a ring side plate surrounding the bottom plate; a plurality of screw columns are arranged on the bottom plate and distributed around the first convex ring;

the cover plate is provided with screw holes corresponding to the screw columns, and the base is fixedly connected with the cover plate through screws.

Preferably, a first mounting table for mounting the cover plate is formed on an end of the ring side plate away from the bottom plate.

Preferably, the ring side plate comprises a second side plate located at one end of the bottom plate close to the box door; a pipe passing hole for the connecting pipeline to penetrate out of the accommodating part is formed in the second side plate, and a connecting clamp hole is formed in the position, adjacent to the pipe passing hole, of the second side plate;

the cover plate is provided with a hook matched with the connecting clamping hole on the base.

Preferably, a second mounting table is arranged on the cover plate, and a decorative cover used for shielding the screw hole is arranged on the second mounting table; the decorative cover and the end part of the annular side plate of the base, which is far away from the bottom plate, share the end face.

Preferably, the connecting pipeline penetrates out of the base, is at least partially located outside the base, and is used for being connected with the air pumping pipeline.

Preferably, the box door is provided with an installation seat, and the air exhaust joint is arranged on the installation seat in a turnover manner; and an air exhaust button is arranged on the mounting seat.

The method for installing the air suction connector of the refrigerator comprises the following steps:

firstly, assembling the air suction joint;

secondly, connecting the air suction joint to the mounting seat;

then, connecting the connecting pipeline of the air suction joint with the air suction pipeline;

and finally, mounting the mounting seat on the box door.

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

Drawings

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

FIG. 2 is a schematic structural view illustrating a state where an air suction connector is connected to a low pressure storage unit of the refrigerator according to the present invention;

FIG. 3 is a schematic structural view illustrating a state where an air suction connector is separated from a low pressure storage unit of the refrigerator according to the present invention;

FIG. 4 is a schematic diagram of the relative relationship between the door, the air extraction joint and the low pressure storage unit of the refrigerator according to the present invention;

fig. 5 is a schematic structural view of a low pressure storage unit of a refrigerator according to the present invention;

FIG. 6 is a schematic view illustrating a structure of a one-way ventilating unit of a low pressure storage unit of a refrigerator according to the present invention;

FIG. 7 is a schematic diagram showing the relative relationship between the door, the suction connector and the low pressure storage unit of the refrigerator according to the present invention;

FIG. 8 is a partially enlarged structural view of the suction fitting, the mounting seat and the door of the refrigerator according to the present invention;

FIG. 9 is a schematic diagram of the relative positions of the air bleed connector and the mounting seat of the refrigerator according to the present invention;

FIG. 10 is a schematic structural view of a mounting seat of the refrigerator according to the present invention;

FIG. 11 is an exploded view of the suction fitting of the refrigerator of the present invention;

FIG. 12 is an exploded view of the air bleed fitting of the present invention from another perspective;

FIG. 13 is a sectional view showing an assembling structure of a suction fitting and a mount base of a refrigerator according to the present invention.

In the above figures: a refrigerator 10; a case 11; a low-pressure storage unit 9; a refrigerating compartment 12; a box door 1; an accommodating portion 1 a; a door frame 16; a front panel 17; an inner skin 18; a through hole 19; a vacuum pump 70; an air extraction line 71; a pressure relief unit 72; a one-way ventilation unit 2; a column 20; an inner end portion 20 a; outer end portions 20 b; an air extraction hole 21; an air outlet 22; a floating column 23; the first baffle plate 23 a; the second baffle plate 23 b; a receiving groove 24; an air extraction channel 25; a first shroud 26; a second shroud 27; a docking slot 28; an air extraction joint 3; a docking port 30; a base 4; a ring side plate 40; a bottom plate 41; a first side plate 40 a; a second side plate 40 b; a first mounting table 40 c; the mating ring 42; the pipe-passing hole 43; a connection card hole 44; a first male ring 45; a second male ring 46; a connection port 46 a; a connecting line 47; a docking collar plate 48; a sealing sleeve 49; the screw post 41 a; a cover plate 5; a third male ring 50; screw holes 51; a hook 52; a second mounting table 53; a concave ring 54; a seal ring 55; a mounting member 6; a mounting cavity 60; the orifice 60 a; the projection 60 b; a routing channel 61; a line connector 62; a mounting seat 8; a first connection plate 81; a convex plate 82; a mating hole 83; an air extraction button 84; a switch plate 85; switch connection leads 86; an opening 81 a; a baffle 87; a second connecting plate 88; mounting holes 89; a magnet block 13; a ferromagnetic member 14; a decorative cover 15.

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 the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is 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 to 13, a refrigerator 10 includes a heat-insulated cabinet 11; the cabinet 11 defines a plurality of low-temperature storage compartments for storing items such as food. In this embodiment, the low-temperature storage compartments are a refrigerating compartment 12 and a freezing compartment, respectively; with the fresh food compartment 12 at the top and the freezer compartment at the bottom. Each low-temperature storage compartment is respectively provided with a respective box door; the refrigerating chamber 12 of the present invention is provided with a door-to-door type door 1 which can rotatably open the low-temperature storage chamber. In the embodiment, the box door 1 is connected with the box body 11 through a door hinge plate; the door hinge plate is provided with a connecting sleeve, and the door 1 is provided with a rotating sleeve sleeved on the connecting sleeve; one of the connecting sleeve and the rotating sleeve is provided with a through hole 19; the refrigerator 10 has an evaporative refrigeration system forming a closed loop. Since such refrigeration systems are well known in the art, they will not be described in detail herein.

As shown in fig. 2 to 4, the cabinet door 1 is provided with a low-pressure storage unit 9 capable of being maintained in a low-pressure state, an air extractor, and an air extracting joint 3 for connecting the low-pressure storage unit 9 and the air extractor. Specifically, the low pressure storage unit 9 is detachably provided on the door 1. The air extractor is arranged at the top of the box door 1 where the low-pressure storage unit 9 is located, and is used for extracting air in the low-pressure storage unit 9 so as to form a low-pressure state in the low-pressure storage unit 9. The air extraction joint 3 is arranged on the box door 1 in a turnover manner and is positioned on one side of the box door 1 close to the low-pressure storage unit 9; the air extraction joint 3 is communicated with an air extraction device; the suction connector 3 is connected to or separated from the low pressure storage unit 9 by turning the suction connector 3.

When the low-pressure storage unit 9 is connected with the air extraction joint 3 and the air extraction device is started, the gas in the low-pressure storage unit 9 is extracted, and the low-pressure storage unit 9 is in a low-pressure state. According to a preferred embodiment of the present invention, at the end of the evacuation process, the pressure inside the low pressure storage unit 9 is between a standard atmospheric pressure and a vacuum absolute. Since the pressure of the air in the low-pressure storage unit 9 is lower than the standard atmospheric pressure, those skilled in the art also refer to it as "vacuum storage" and refer to the state where the pressure of the air is lower than the standard atmospheric pressure as "vacuum state".

As shown in fig. 4, the top of the door 1 is provided with an accommodating portion 1 a. The air extracting device comprises a vacuum pump 70 arranged in the accommodating part 1a, an air extracting pipeline 71 connected with the vacuum pump 70 and an exhaust pipeline; the suction line 71 has one end communicating with the vacuum pump 70 and the other end communicating with the suction joint 3 for communicating with the low pressure storage unit 9 when the suction joint 3 is connected with the low pressure storage unit 9. Specifically, the air pumping pipeline 71 extends from top to bottom along the box door 1 to the air pumping joint 3. As a preferable implementation manner, the air exhaust pipeline 71 is provided with a pressure relief unit 72 communicated with the air exhaust pipeline 71, so as to enable external air to enter the air exhaust pipeline 71 of the air exhaust device after the vacuum pumping is finished, thereby balancing the internal and external air pressures of the air exhaust pipeline 71 of the air exhaust device, so as to reduce the internal and external pressure difference of the air exhaust joint 3, and facilitate a user to turn over the air exhaust joint 3 to separate the air exhaust joint from the low-pressure storage unit 9. In this embodiment, the pressure release unit 72 is mounted in the housing portion 1 a.

As shown in fig. 5, the low pressure storage unit 9 is provided with a one-way ventilation unit 2; specifically, the one-way ventilation unit 2 includes a column 20 formed on the low pressure storage unit 9 and a suction hole 21 penetrating the column 20. Wherein the pillar 20 has an inner end 20a inside the low pressure storage unit 9 and an outer end 20b outside the low pressure storage unit 9; wherein, the air outlet 22 is formed at the outer end 20b of the upright post 20 by the air exhaust hole 21; a floating column 23 is arranged in the air pumping hole 21, the radial size of the floating column 23 is smaller than that of the air pumping hole 21, the floating column 23 and the upright column 20 jointly define an air pumping channel 25, and the air pumping channel 25 is always communicated with the inner cavity of the low-pressure storage unit 9; one end of the floating column 23 is provided with a second baffle 23b for cooperating with the outer end portion 20b to open or close the air outlet 22; a first shroud 26 at the inner race and a second shroud 27 at the outer race are provided around the outer end 20b of the column 20, the first shroud 26 and the second shroud 27 cooperating to form a docking slot 28.

A first baffle 23a is arranged at one end of the floating column 23 close to the inner end 20a, and an accommodating groove 24 for accommodating the upright column 20 is formed between the first baffle 23a and the second baffle 23 b; the first baffle 23a is intended to cooperate with the inner end 20a of the upright 20; the side wall of the inner end 20a of the upright post 20 is provided with a vent to communicate the inner cavity of the low pressure storage unit 9 with the air suction passage 25.

As shown in fig. 3, the suction joint 3 is provided with a docking port 30, and the docking port 30 communicates with a suction line 71. When the air extraction joint 3 is connected with the low-pressure storage unit 9 in an overturning way, the air extraction joint 3 is arranged in the butt joint groove 28 and is in sealed butt joint with the butt joint groove 28; the suction hole 21 of the low pressure storage unit 9 is butted against the butt joint 30 of the suction joint 3 to communicate the inner cavity of the low pressure storage unit 9 with the suction line 71 during the vacuum pumping.

When the low-pressure storage unit 9 is used for air extraction, negative pressure is generated on one side, close to the air extraction joint 3, of the floating column 23, the floating column 23 moves towards the direction close to the air extraction joint 3 under the action of air pressure, the second baffle plate 23b is separated from the outer end part 20b, and the air outlet 22 is opened; the air in the low-pressure storage unit 9 sequentially passes through the air extracting channel 25, the air outlet 22, the air extracting joint 3, the air extracting pipeline 71, the vacuum pump 70 and the exhaust pipeline; when the low-pressure storage unit 9 stops air suction, because the pressure of the floating column 23 close to the inner cavity side of the low-pressure storage unit 9 is smaller than the pressure of the floating column 23 close to the air suction connector 3, the floating column 23 moves away from the air suction connector 3 under the action of air pressure, the second baffle plate 23b is in sealing fit with the outer end part 20b, and the air outlet 22 is closed. At this time, by opening the pressure relief unit 72, the gas enters the air pumping pipeline 71, so that the air pressure inside and outside the air pumping pipeline 71 is balanced, and the user can turn over the air pumping connector 3 to separate the air pumping connector from the low-pressure storage unit 9.

In this embodiment, the exhaust duct may be disposed to communicate with the external atmosphere of the refrigerator 10 to exhaust the air drawn from the inside of the low pressure storage unit 9 to the outside of the refrigerator 10.

In particular, see fig. 2-4, as shown in fig. 7-8; the box door 1 comprises a door frame 16, a front panel 17 and an inner shell plate 18 which are arranged on the door frame 16; wherein the inner skin 18 is located on the side of the front panel 17 adjacent the low pressure storage compartment. The installation part 6 is arranged on one side of the door frame 16 close to the box body 11; the mounting member 6 is provided with a mounting cavity 60, and the mounting member 6 is provided with a ferromagnetic member 14, i.e. a member made of ferromagnetic material, at a position above the mounting cavity 60; in the present embodiment, the ferromagnetic member 14 is a sheet metal member. Wherein, a cavity opening 60a is formed on one side of the inner shell plate 18 of the mounting cavity 60, and a lug 60b is arranged on the inner cavity wall of the mounting cavity 60 in the circumferential direction around the cavity opening 60 a; the installation cavity 60 is provided with a wiring channel 61 and a pipeline joint 62 in the direction away from the rotation axis of the box door 1, wherein one end of the pipeline joint 62 is communicated with an air suction pipeline 71 of the air suction device, and the other end is communicated with the air suction joint 3. The mounting member 6 is provided between the front panel 17 and the inner shell 18 of the door 1, and the inner shell 18 is formed with an opening corresponding to the opening 60a of the mounting chamber 60.

The mounting piece 6 is provided with a mounting seat 8 connected with the air extraction joint 3; as shown in fig. 9-10, the mounting base 8 includes a first connecting plate 81, a protruding plate 82 is formed on a side of the first connecting plate 81 close to the inner casing plate 18, and a matching hole 83 matched with the protrusion 60b in the mounting cavity 60 is formed on the protruding plate 82 to fix the mounting base 8 to the door 1, and the opening 60a of the mounting cavity 60 is shielded by the first connecting plate 81. The first connecting plate 81 is provided with an air-extracting button 84, and one side of the air-extracting button 84, which is close to the inner shell plate 18, is provided with a switch plate 85; wherein the switch connecting wire 86 connected with the air pumping button 84 passes through the wiring channel 61 on the mounting member 6 and passes through the through hole 19 on the rotary sleeve or the connecting sleeve to be connected with the electric control box in the box body 11. An opening 81a is arranged below the air suction key 84 on the first connecting plate 81, a baffle 87 is formed on the lower edge of the opening 81a, and the baffle 87 extends upwards and in a direction away from the inner shell plate 18; the baffle 87 is provided with a second connecting plate 88 at the edge of the opening 81a at two opposite sides, and a mounting hole 89 is formed at one side of the second connecting plate 88 close to the opening 81 a.

As shown in fig. 11-13, the suction fitting 3 includes a base 4 and a cover 5 that mates with the base 4. The base 4 includes a bottom plate 41 and a ring side plate 40 surrounding the bottom plate 41, and the bottom plate 41 and the ring side plate 40 cooperate to define a receiving portion. The ring side plate 40 comprises a first side plate 40a and a second side plate 40b which is positioned at one end of the air exhaust joint 3 close to the inner shell plate 18, and the first side plate 40a and the second side plate 40b are connected end to end and are arranged around the edge of the bottom plate 41. Wherein, the end of the ring side plate 40 far away from the bottom plate 41 is formed with a first mounting table 40c for mounting the cover plate 5, so that the cover plate 5 is mounted in the accommodating part; the two ends of the first side plate 40a, which are connected to the two opposite ends of the second side plate 40b, are provided with mating rings 42, and the mating rings 42 are matched with the mounting holes 89 on the mounting base 8 and can rotate around the central axis of the mounting holes 89, so that the air suction connector 3 can be turned over. The opening 81a on the mounting seat 8 is a reserved space of the air suction joint 3, so that interference between the air suction joint 3 and the mounting seat 8 in the process of turning over the air suction joint is avoided; in addition, when the suction connector 3 is turned over in a direction to approach the low pressure storage unit 9, the baffle 87 can limit the limit position of the suction connector 3, so that the suction connector 3 can be turned over in the area above the low pressure storage unit 9, thereby facilitating the operation of the user. In addition, the second side plate 40b is formed with a pipe passing hole 43, and a connection clip hole 44 is provided at a position adjacent to the pipe passing hole 43. One side of the bottom plate 41 far away from the second side plate 40b is provided with a first convex ring 45, a second convex ring 46 is arranged in the first convex ring 45, the second convex ring 46 and the bottom plate 41 are matched to form a mounting groove, and a connecting port 46a communicating the inner side and the outer side of the second convex ring 46 is arranged on the second convex ring 46. The periphery of the first convex ring 45 is provided with a plurality of screw columns 41a, and the first convex ring 45 is provided with a connecting pipeline 47 communicated with the two sides of the inner side of the first convex ring, wherein the connecting pipeline 47 penetrates out of the pipe hole 43 and is used for being communicated with an air suction pipeline 71 of an air suction device through a pipeline joint 62 on the mounting piece 6. In this embodiment, at least a part of the connection pipeline 47 is located outside the base 4, that is, a certain length is reserved after the connection pipeline 47 extends out of the base 4, so that the connection pipeline 47 extends out of the base 4 by a large amount, a space is reserved for manual operation of an installer, and the installer can conveniently connect the connection pipeline 47 and the pipeline joint 62 together.

Wherein, the butt joint 30 of the air suction joint 3 is arranged on the bottom plate 41 and is surrounded by the second convex ring 46; the connection port 30 is connected to an air suction line 71 of the air suction device via a connection port 46a and a connection line 47. A butt joint ring plate 48 is arranged on one side, away from the first convex ring 45, of the bottom plate 41, the butt joint ring plate 48 is arranged around the butt joint port 30, and a sealing sleeve 49 is sleeved on the butt joint ring plate 48; when the suction connector 3 is connected to the low pressure storage unit 9, the docking ring plate 48 is installed in the docking groove 28 of the low pressure storage unit 9 and is sealingly docked with the docking groove 28 by the gland 49.

The cover plate 5 of the air extraction joint 3 is provided with a third convex ring 50, the third convex ring 50 is installed in the installation groove, the end part of the third convex ring 50 and the bottom plate 41 jointly define a ventilation gap, the third convex ring 50 and the second convex ring 46 jointly define an air flow channel, namely, the third convex ring 50 is installed between the first convex ring 45 and the second convex ring 46, and the connection between the connecting pipeline 47 and the butt joint 30 is not blocked; a female ring 54 is provided around the third male ring 50, the female ring 54 cooperating with the first male ring 45 of the base 4 and being intended to receive a sealing ring 55; the sealing space communicated with the interface 30 is limited by the concave ring 54, the first convex ring 45 and the sealing ring 55, so that the boundary of the sealing space is effectively reduced, the sealing effect is improved, and the effectiveness of vacuumizing is ensured. The periphery of the third protruding ring 50 is provided with a plurality of screw holes 51 matched with the screw posts 41a on the bottom plate 41, and the magnet block 13 is arranged in the third protruding ring 50. In addition, a hook 52 matched with the connecting hole 44 on the base 4 is arranged on the edge of the cover plate 5 far away from the third convex ring 50.

In addition, the cover plate 5 is provided with a decorative cover 15 on the side away from the base 4 to cover the screw holes 51 provided thereon. In this embodiment, the second mounting table 53 is provided on the cover plate 5, the decorative cover 15 is mounted on the second mounting table 53, the cover plate 5 is mounted on the first mounting table 40c, and after the decorative cover 15 is mounted on the second mounting table 53, the ring-side plate 40 of the base 4 and the decorative cover 15 are arranged on the same end face, so that the thickness of the air extraction joint 3 can be effectively reduced. In this embodiment, the decorative cover 15 is attached to the cover 5 by bonding.

When the sealing ring is installed, a sealing ring 55 is sleeved outside the third convex ring 50, and the sealing ring 55 is installed in the concave ring 54; the hook 52 on the cover plate 5 is arranged in the connecting clamp hole 44 on the second side plate 40b of the base 4, and the cover plate 5 is arranged on the first mounting table 40c on the base 4 so as to pre-position the cover plate 5 and the base 4; at this time, the third protruding ring 50 is installed in the installation groove, and the end of the third protruding ring 50 and the bottom plate 41 together define a ventilation gap, and the third protruding ring 50 and the second protruding ring 46 together define an air flow channel. A sealing ring 55 is located between the second male ring 46 and the female ring 54 to enable the sealing butt joint of the second male ring 46 and the cover plate 5; during air suction, air flows through the interface 30, and then sequentially enters the air flow channel, the ventilation gap, and the connecting pipe 47 through the connecting port 46 a. At this time, the screw hole 51 on the cover plate 5 corresponds to the screw post 41a on the base 4, and the cover plate 5 is fixedly connected with the bottom plate 41 through a screw; finally, the decorative cover 15 is mounted on the cover plate 5 by means of bonding. It should be noted that, when the second convex ring 46 is tightly fitted with the magnet block 13, a connection port 46a must be provided to communicate the interface 30 with the air flow path; on the other hand, if there is a gap through which air flows between the second projecting ring 46 and the magnet block 13, the connection port 46a does not have to be provided. In order to reduce the thickness of the air suction joint, fully utilize the space of the accommodating part, and further position the magnet block 13, a second convex ring 46 is arranged to be tightly matched with the magnet block 13, and a connecting port 46a is arranged on the second convex ring 46.

The above air suction joint 3 is connected or separated with the low pressure storage unit 9 by turning the air suction joint 3 by the rotation of the mating ring 42; when the air suction joint 3 is connected with the low pressure storage unit 9, the butt joint 30 corresponds to the air suction hole 21; when the air extracting joint 3 is separated from the low-pressure storage unit 9, the air extracting joint 3 is attached to the inner shell plate 18, and the magnet block 13 in the air extracting joint 3 corresponds to the position of the ferromagnetic piece 14 on the mounting piece 6 and generates interaction so as to attach the air extracting joint 3 to the inner shell plate 18.

Above bleed and connect 3's setting, in the space that apron 5 and base 4 formed, set up magnet piece 13, screw post 41a, sealing washer 55 to set up dress trim cover 15 and the terminal surface altogether of 4 ring side boards 40 of base, make to bleed and connect 3 multiple functional, the leakproofness is good, and compact structure is exquisite, and thickness occupation space is little, improves product quality.

The installation method of the air extraction joint 3 is as follows:

firstly, assembling an air extraction joint 3;

specifically, a seal ring 55 is externally fitted around the third projecting ring 50, and a magnet block 13 is fitted inside the third projecting ring 50; the connecting pipeline 47 is arranged on the first convex ring 45 and extends out of the pipe hole 43; installing a clamping hook 52 on the cover plate 5 in a connecting clamping hole 44 on a second side plate 40b of the base 4, installing the cover plate 5 on a first installation platform 40c on the base 4, installing a third convex ring 50 in an installation groove, wherein the end part of the third convex ring 50 and the bottom plate 41 jointly define a ventilation gap, the third convex ring 50 and the second convex ring 46 jointly define an air flow channel, a sealing ring 55 is positioned between the second convex ring 46 and the cover plate 5, and a screw hole 51 on the cover plate 5 corresponds to a screw column 41a on the base 4; then the cover plate 5 is fixedly connected with the bottom plate 41 through screws; finally, the decorative cover 15 is arranged on the cover plate 5 in a bonding mode to form an air exhaust joint 3;

secondly, the air extraction key 84 and the switch board 85 are fixed on the mounting seat 8; the suction attachment 3 is then mounted on the mounting 8.

Furthermore, the connecting pipeline 47 of the air extraction joint 3 is connected with the pipeline joint 62; finally, the mounting seat 8 is mounted on the mounting member 6, and the assembled evacuation connector 3, mounting seat 8, evacuation button 84, and switch plate 85 are mounted on the door 1.

In this embodiment, the connecting pipeline 47 is reserved with a certain length after extending out of the base 4, so as to reserve a space for manual operation of an installer.

The arrangement of the air extraction joint 3 can reduce the thickness of the accommodating cavity of the air extraction joint 3 to be close to the sum of the diameter of the connecting pipeline 47 and the thickness of the cover plate in the space formed by the cover plate 5 and the base 4, thereby effectively reducing the thickness of the air extraction joint. Meanwhile, the magnet block 13, the screw column 41a and the sealing ring 55 are arranged in the limited space, and the decorative cover 15 and the annular side plate 40 of the base 4 are arranged on the same end face, so that the air exhaust joint 3 is complete in function, good in sealing performance, compact and exquisite in structure, small in thickness occupied space and capable of improving product quality.

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. Refrigerator, characterized in that it comprises:

a cabinet defining an insulated low temperature storage compartment;

2. The refrigerator according to claim 1, wherein: the cover plate is provided with a third convex ring, and the third convex ring is arranged on the inner ring of the concave ring; the end part of the third convex ring far away from the cover plate and the bottom of the accommodating part jointly define a ventilation gap;

3. The refrigerator according to claim 1, wherein: a second convex ring is arranged in the first convex ring on the base, the butt joint port is arranged in the area surrounded by the second convex ring, and a connecting port for communicating the inner side and the outer side of the second convex ring is arranged on the second convex ring;

4. The refrigerator according to claim 1, wherein: the base comprises a bottom plate and a ring side plate surrounding the bottom plate; a plurality of screw columns are arranged on the bottom plate and distributed around the first convex ring;

5. The refrigerator according to claim 3, wherein: and a first mounting table for mounting the cover plate is formed at the end part, far away from the bottom plate, of the ring side plate.

6. The refrigerator of claim 4, wherein: the ring side plate comprises a second side plate positioned at one end of the bottom plate close to the box door; a pipe passing hole for the connecting pipeline to penetrate out of the accommodating part is formed in the second side plate, and a connecting clamp hole is formed in the position, adjacent to the pipe passing hole, of the second side plate;

7. The refrigerator of claim 4, wherein: a second mounting table is arranged on the cover plate, and a decorative cover used for shielding the screw hole is arranged on the second mounting table; the decorative cover and the end part of the annular side plate of the base, which is far away from the bottom plate, share the end face.

8. The refrigerator according to claim 1, wherein: the connecting pipeline penetrates out of the base, is at least partially positioned outside the base and is used for being connected with the air pumping pipeline.

9. The refrigerator according to any one of claims 1 to 7, wherein: the box door is provided with an installation seat, and the air exhaust joint is arranged on the installation seat in a turnover manner; and an air exhaust button is arranged on the mounting seat.

10. A method of installing a suction fitting of a refrigerator according to claim 9, wherein: the method comprises the following steps:

firstly, assembling the air suction joint;

secondly, connecting the air suction joint to the mounting seat;

and finally, mounting the mounting seat on the box door.