WO2022000742A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2022000742A1
WO2022000742A1 PCT/CN2020/111140 CN2020111140W WO2022000742A1 WO 2022000742 A1 WO2022000742 A1 WO 2022000742A1 CN 2020111140 W CN2020111140 W CN 2020111140W WO 2022000742 A1 WO2022000742 A1 WO 2022000742A1
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WO
WIPO (PCT)
Prior art keywords
column
low
vacuum pump
air
storage unit
Prior art date
Application number
PCT/CN2020/111140
Other languages
English (en)
French (fr)
Inventor
张建
刘铁伟
杨春
Original Assignee
海信（山东）冰箱有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海信（山东）冰箱有限公司 filed Critical 海信（山东）冰箱有限公司
Publication of WO2022000742A1 publication Critical patent/WO2022000742A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/028—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/062—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation along the inside of doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2323/00—General constructional features not provided for in other groups of this subclass
    • F25D2323/02—Details of doors or covers not otherwise covered
    • F25D2323/024—Door hinges

Definitions

  • the present disclosure belongs to the technical field of refrigerators, and particularly relates to a refrigerator.
  • refrigerators As an indispensable electrical product in home life, refrigerators occupy an important market share. With the improvement of consumers' requirements for the quality of fresh food, the requirements for refrigerators are also getting higher and higher, requiring refrigerators to have higher configuration and more powerful functions, especially hope that the stored fresh food can have better quality. Long storage period to ensure the freshness of the ingredients and prevent the loss of nutrients.
  • a vacuum chamber In order to store the food better, a vacuum chamber has been developed in the refrigerator, and the vacuum chamber is evacuated by a vacuum device.
  • the main function of vacuuming is to deoxygenate the vacuum chamber to prevent food spoilage.
  • the vacuum chamber 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 the vacuum chamber to leak.
  • Some embodiments of the present disclosure provide a refrigerator, comprising:
  • a box door the top of which is provided with a accommodating part; the box door is rotatably connected with the box body to open or close the low-temperature storage compartment;
  • a low-pressure storage unit in which air can be evacuated to form an air pressure lower than the atmospheric pressure outside the refrigerator, so as to facilitate the preservation of food;
  • a vacuum pump which is arranged in the accommodating part of the box door;
  • a leak-proof unit which includes:
  • a column formed on the accommodating part and having a first end part located in the cavity of the accommodating part and a second end part located outside the cavity of the accommodating part;
  • a first through hole which penetrates the column and forms an air outlet at the first end of the column; the side of the first through hole close to the second end of the column is used for connecting with the low-pressure storage unit connected;
  • the floating column is installed in the first through hole; the radial dimension of the floating column is smaller than the radial dimension of the first through hole, and the floating column and the vertical column together define an air extraction channel;
  • a first baffle plate arranged at one end of the floating column, and used to cooperate with the first end part to open or close the air outlet;
  • a first shield sleeved on the outside of the first end, and sealed with the accommodating part; the inner cavity of the first shield communicates with the air extraction channel and the vacuum pump;
  • the floating column When the low-pressure storage unit is pumped, the floating column is moved toward the direction close to the vacuum pump under the action of air pressure, the first baffle is separated from the first end, and the air outlet is opened; the low-pressure The air of the storage unit passes through the air extraction channel, the air outlet, the inner cavity of the first shield, and the vacuum pump in sequence;
  • the floating column When the low-pressure storage unit stops pumping, the floating column is moved away from the vacuum pump under the action of the air pressure, the first baffle is sealed with the first end, and the air outlet is closed.
  • FIG. 1 is a schematic structural diagram of a box door of a refrigerator in an open state according to some embodiments of the present disclosure
  • FIG. 2 is a schematic diagram of a relative configuration relationship between a box door of a refrigerator and a vacuum pump assembly according to some embodiments of the present disclosure
  • FIG. 3 is a schematic exploded structural diagram of a door hinge assembly of a refrigerator according to some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of the pipeline of a vacuum pump assembly of a refrigerator according to some embodiments of the present disclosure
  • FIG. 5 is a schematic diagram of relative positions of a vacuum pump assembly, an anti-leakage unit, and a box door accommodating portion of a refrigerator according to some embodiments of the present disclosure
  • FIG. 6 is a schematic structural diagram of a top receiving portion of a box door of a refrigerator according to some embodiments of the present disclosure
  • FIG. 7 is a schematic structural diagram from another perspective of a top receiving portion of a box door of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 8 is a schematic diagram of an exploded structure of a top of a box door of a refrigerator according to some embodiments of the present disclosure
  • FIG. 9 is a schematic exploded structural diagram of a top of a box door of a refrigerator according to some embodiments of the present disclosure from another perspective;
  • FIG. 10 is a schematic structural diagram of a shielding cover on the top of a box door of a refrigerator according to some embodiments of the present disclosure
  • FIG. 11 is a partial structural schematic diagram of a top of a box door of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 12 is a schematic diagram of another perspective view of the partial structure of the top of the box door of the refrigerator according to some embodiments of the present disclosure.
  • Figure 13 is a cross-sectional view of the direction A-A in Figure 12;
  • Fig. 14 is the enlarged view of A area in Fig. 12;
  • FIG. 15 is a cross-sectional view of the top of a door of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 16 is an oblique view of the top of a door of a refrigerator according to some embodiments of the present disclosure
  • FIG. 17 is an enlarged view of area B in FIG. 16 .
  • a refrigerator 1 the refrigerator 1 includes a heat-insulating box 2, the box 2 includes an outer shell 2a, an inner container 2b and a thermal insulation layer (not shown) located therebetween.
  • the box body 2 defines a plurality of insulated low-temperature storage compartments to store food and other items.
  • these low-temperature storage compartments are respectively the refrigerating compartment 10 located at the upper part and the freezing compartment located at the bottom.
  • the low temperature storage compartments can be closed by the respective corresponding box doors 13 .
  • the refrigerator compartment 10 is provided with a side-to-side door 13, and the freezer compartment is also provided with a side-by-side door.
  • the refrigerator 1 has an evaporative refrigeration system forming a closed loop.
  • the refrigeration system at least includes a compressor (not shown), a condenser (not shown), a throttling device (not shown) and an evaporator (not shown). Since such refrigeration systems are well known in the prior art, further descriptions thereof are omitted. Of course, the refrigerator 1 can also use other forms of refrigeration systems (eg, absorption refrigeration systems, thermoelectric refrigeration systems).
  • the refrigerator 1 is provided with a low-pressure storage unit that can be maintained in a low-pressure state, and a vacuum pump assembly for evacuating gas from the low-pressure storage unit.
  • the low-pressure storage unit is provided in the refrigerating compartment 10 .
  • the vacuum pump assembly is arranged on the top of the box door 13 of the refrigerating chamber 10 where the low-pressure storage unit is located.
  • the low-pressure storage unit may also be arranged in other low-temperature storage compartments, such as a changing room whose temperature range can be switched between a refrigerating temperature zone and a freezing temperature zone.
  • the vacuum pump assembly is arranged on the top of the box door 13 of the low-temperature storage compartment where the low-pressure storage unit is located.
  • the gas in the low-pressure storage chamber is evacuated, and the low-pressure storage chamber is in a low-pressure state.
  • 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, it is also commonly called “vacuum storage” by those skilled in the art, and the state where the air pressure is lower than the standard atmospheric pressure is called a "vacuum state".
  • the medium and low pressure storage unit of the present disclosure can be set in the form of a drawer, or can be set in the form of a box (fixed or detachable form, connected to a vacuum pump for vacuuming when vacuuming is required), or can be set as The form of the plastic bag (seal after vacuuming), its specific form is determined according to the specific plan.
  • the top plate 14 of the box body 2 is provided with a door hinge assembly 6, and the door hinge assembly 6 includes a door hinge plate 7 and a door hinge box 8; the door hinge plate 7 is provided with a first connecting piece,
  • the box door 13 is provided with a second connector that is rotatably connected to the first connector; and at least one of the first connector and the second connector is provided with a pipeline channel.
  • the first connecting piece includes a connecting sleeve 73
  • the second connecting piece includes a rotating sleeve 15 sleeved inside or outside the connecting sleeve 73; the rotating sleeve 15 or connecting The inner hole of the sleeve 73 forms a pipeline channel.
  • the door hinge plate 7 includes a fixed seat plate 71 and a connection seat plate 72 .
  • the fixed seat plate 71 is attached to the outer surface of the top plate 14 of the box body 2; the fixed seat plate 71 is provided with a first connection hole group 75, and screws are installed in the first connection hole group 75 to connect the fixed seat plate 71 to the box
  • the top plate 14 of the body 2 is fixed.
  • the connecting seat plate 72 protrudes from the front side of the box body 2 and is provided with a connecting sleeve 73 thereon.
  • the top of the box door 13 is provided with a rotating sleeve 15 .
  • the rotating sleeve 15 is sleeved on the outside or inside of the connecting sleeve 73 to cooperate with each other so that the box door 13 can rotate around the central axis of the connecting sleeve 73 .
  • the edge of the door hinge plate 7 is provided with a plurality of upwardly protruding buckles 74 .
  • the door hinge box 8 includes a box bottom 81 and a box side plate 82 surrounding the box bottom 81 .
  • the box side plate 82 is provided with a plurality of first hooks 83 corresponding to the positions of the buckle positions 74 on the door hinge plate 7.
  • the first hooks 83 are buckled with the buckle positions 74 on the door hinge plate 7 to lock the door.
  • the hinge plate 7 is fixedly connected to the door hinge box 8 .
  • the door hinge plate 7 is completely installed in the door hinge box 8 .
  • the box bottom 81 of the door hinge box 8 is provided with a second connecting hole group 84 , and screws are installed in the second connecting hole group 84 to fix the door hinge box 8 and the top plate 14 of the box body 2 .
  • the vacuum pump assembly includes a vacuum pump 3 and a rubber sleeve 9 sleeved outside the vacuum pump 3 .
  • the vacuum pump 3 is provided with a suction pipe 38 and an exhaust pipe 39 .
  • the exhaust pipe 38 and the exhaust pipe 39 are arranged in parallel, and are located at the same end of the vacuum pump 3 .
  • the exhaust pipe 38 is connected with the first pipeline 16 , the first pipeline 16 extends downward along the box door 13 , and is bent at the lower area of the box door 13 and extends toward the side of the box door 13 close to the refrigerator compartment 10 .
  • a perforation 13a is provided on the side of the box door 13 close to the refrigerating chamber 10 , and the first pipeline 16 is arranged in the foam layer of the box door 13 and extends downward in the foam layer, and finally Pass through the hole 13a.
  • the exhaust pipe 39 is connected with a second pipeline 17, the second pipeline 17 extends toward the rotating sleeve 15, and passes through the rotating sleeve 15 or the connecting sleeve 73 located in the inner ring from bottom to top; the second pipeline 17 It communicates with the atmospheric environment outside the refrigerator 1 .
  • the second pipeline 17 is arranged in the foam layer of the box door 13, and extends toward the rotating sleeve 15 in the foam layer, and finally passes through the rotating sleeve 15 or the connecting sleeve 73 located in the inner ring, to communicate with the atmosphere outside the refrigerator.
  • the arrangement of the first pipeline 16 and the second pipeline 17 enables the gas to be discharged at a distance from the vacuum pump 3 , effectively avoiding condensation caused when the gas is discharged around the vacuum pump 3 .
  • the first pipeline 16 and the second pipeline 17 are both arranged in the foam layer, and the temperature of the gas passing through the first pipeline 16 and the second pipeline 17 can be increased to a certain extent by utilizing the thermal insulation of the foam layer.
  • the arrangement of the present disclosure directly discharges the gas extracted from the low-pressure storage unit out of the refrigerator 1, thereby preventing the food in other areas in the refrigerating chamber 10 from being mixed with each other and affecting the fresh-keeping effect of the food.
  • the first pipeline 16 extends in a direction perpendicular to the box door 13 when passing through the through hole 13 a.
  • the first pipeline 16 communicates with the low pressure storage chamber of the low pressure storage unit; when the box door 13 is opened, the first pipeline 16 is separated from the low pressure storage unit, and the low pressure storage unit is sealed.
  • the low-pressure storage unit is provided with a communication valve.
  • the communication valve When the box door 13 is closed, under the triggering action of the first pipeline 16, the communication valve is opened, and the first pipeline 16 communicates with the interior of the low-pressure storage unit. ;
  • the connection mode is not limited to the mode described in this embodiment.
  • the low-pressure storage unit is connected to the box door 13, and the first pipeline 16 is directly connected to the low-pressure storage unit; when the box door 13 is opened, the box door 13 drives a low-pressure storage unit disposed thereon. After moving out of the low-pressure storage compartment, the user opens the low-pressure storage unit to take out items as needed.
  • the rubber sleeve 9 is in contact with the accommodating portion 18 , and the rubber sleeve 9 has a main body portion 91 for installing the vacuum pump 3 .
  • the main body portion 91 is provided with an installation cavity 92 consistent with the shape of the vacuum pump 3 ; the radial direction of the installation cavity 92 of the main body portion 91 is The size is not larger than the radial size of the corresponding position of the vacuum pump 3, so that the rubber sleeve 9 is close to the vacuum pump 3, and the vibration on the vacuum pump 3 is absorbed in time.
  • the periphery of the main body portion 91 is provided with a plurality of protrusions 93 arranged in parallel along the central axis of the main body portion 91 and surrounding the main body portion 91 to improve the deformability of the rubber sleeve 9 and improve the vibration reduction effect.
  • the Shore hardness of the rubber cover 9 is 35-40.
  • the top of the box door 13 of the refrigerator 1 is formed with an accommodating portion 18 with an upper end open for accommodating the vacuum pump 3 , and a shielding cover 30 is installed at the open end of the accommodating portion 18 to close the open end thereof.
  • a groove 19 is provided at the edge of the opening end of the accommodating portion 18, and a convex plate 31 matched with the groove 19 is provided at the edge of the shielding cover 30; the convex plate 31 is installed in the groove 19;
  • the cover 30 is in sealing connection with the receptacle 18 .
  • the above arrangement encapsulates the vacuum pump assembly in the accommodating portion 18 at the top of the box door 13, so that the entire system is air-tight, and effectively prevents the noise of the vacuum pump assembly itself from being transmitted through gas as a medium.
  • the accommodating portion 18 includes a first enclosure plate 47 and first end caps 48 located at both ends of the first enclosure plate 47 ; second locking blocks are provided on the inner walls of the two opposite first enclosure plates 47 of the accommodating portion 18 41 ; the two opposite sides of the shielding cover 30 are provided with second hooks 32 , and the second hooks 32 cooperate with the second blocking blocks 41 to fixedly connect the shielding cover 30 to the accommodating portion 18 .
  • Both ends of the bottom of the accommodating portion 18 are provided with limiters 42, and the two limiters 42 together define an installation gap 43 to accommodate the vacuum pump 3; and the limiters 42 abut against both ends of the vacuum pump 3 to The position of the vacuum pump 3 is limited.
  • a latching protrusion 44 is provided on the inner wall of the first enclosure plate 47 of the accommodating portion 18 , and the latching protrusion 44 cooperates with the rubber sleeve 9 to fix the vacuum pump 3 .
  • the latching protrusions 44 are in contact with the main body 91 of the rubber sleeve 9 , that is, the latching protrusions 44 are located between two adjacent protrusions 93 on the rubber sleeve 9 .
  • the outer diameter of the rubber sleeve 9 is not smaller than the corresponding position size of the accommodating part 18 , so that when the rubber sleeve 9 is installed inside the accommodating part 18 , the rubber sleeve 9 is connected to the accommodating part 18 .
  • the inner walls are in contact and interact with each other to generate friction to ensure firm installation.
  • the bottom of the accommodating portion 18 is provided with a first joint 45 extending toward its open end; the first joint 45 is connected to the exhaust pipe 39 of the vacuum pump 3 .
  • One end of the accommodating portion 18 that is close to the first joint 45 is covered with a cover 33 ; the outer wall of the accommodating portion 18 is provided with a first blocking block 46 , and the casing 33 is provided with a blocking hole for matching with the first blocking block 46 34.
  • the fixed connection between the accommodating portion 18 and the housing 33 is realized through the cooperation of the first clamping block 46 with the clamping hole 34 .
  • the first joint 45 is disposed at one end of the accommodating portion 18
  • the casing 33 includes a second enclosing plate 35 covering the outside of the first enclosing plate 47 and a first joint covering the side of the first joint 45 .
  • Second end cap 36 outside end cap 48 .
  • the first clamping block 46 is provided on the first enclosure plate 47 of the accommodating portion 18 and the first end cover 48 near the first connector 45 ;
  • the clamping hole 34 is provided on the second enclosure plate 35 and the second end cover of the housing 33 36 in order to strengthen the connection strength between the cover 33 and the accommodating part 18 and improve the installation stability.
  • the casing 33 is provided with a second joint 37 , and the second pipe 17 is installed on the second joint 37 .
  • the second joint 37 communicates with the first joint 45 on the first enclosure plate 47 of the accommodating portion 18 ; that is, the second joint 37 communicates with the exhaust pipe 39 .
  • the second joint 37 includes a guide post 37a at one end away from the casing 33.
  • the guide post 37a is inversely tapered to facilitate the installation of the second pipeline 17;
  • a concave ring 37c is provided between the plate 37b and the guide post 37a to effectively prevent the second pipeline 17 from falling off; the second pipeline 17 is installed on the second joint 37 through the guide post 37a and stopped by the baffle 37b.
  • the expansion degree of the second pipeline 17 at the concave ring 37c is smaller than the expansion degree of the second pipeline 17 at the guide post 37a, which can effectively prevent the second pipeline 17 from falling off.
  • the inner diameter of the second pipeline 17 is denoted as D 1
  • the outer diameter of the end of the guide post 37a close to the concave ring 37c is D 2 , wherein D 1 ⁇ D 2 .
  • the first pipeline 16 When the box door 13 is closed, the first pipeline 16 is communicated with the low-pressure storage unit; when the vacuum pump 3 is in operation, the air in the low-pressure storage unit passes through the first pipeline 16, the exhaust pipe 38, the vacuum pump 3, the exhaust pipe 39, and the first pipe in sequence.
  • the second pipeline 17 is finally discharged from the box 2 through the second pipeline 17 .
  • the food in other areas in the refrigerating chamber 10 will be mixed with each other, which will affect the preservation effect of the food; It can improve the transmission of body and reduce noise, optimize the overall performance of the refrigerator, and improve the user experience.
  • the refrigerator 1 has an air leakage prevention unit 40 that communicates with the air extraction pipe 38 of the vacuum pump 3.
  • the air leakage prevention unit 40 can avoid air leakage caused by the formation of negative pressure in the low-pressure storage unit after vacuuming .
  • the existing structure after vacuuming, when the low-pressure storage unit is in a negative pressure state, the gas is sucked back into the exhaust pipe 38 through the exhaust pipe 39 of the vacuum pump 3, and the gas is discharged into the low-pressure storage unit through the exhaust pipe 38, resulting in The low-pressure storage unit leaks air, reducing the efficiency of vacuuming.
  • the air leakage prevention unit 40 of this embodiment can effectively avoid the occurrence of air leakage caused by sucking back, so as to ensure the vacuum degree of the low-pressure storage unit and the effect of keeping food fresh.
  • the anti-leakage unit 40 has a post 61 protruding from the first end cover 48 close to the air extraction pipe 38 .
  • the post 61 includes a first end 61 a located inside the accommodating part 18 and a second end 61 b located outside the accommodating part 18 .
  • the column 61 has a first through hole 62 that communicates with the accommodating cavity of the accommodating portion 18 ; the first through hole 62 penetrates the column 61 and forms an air outlet 62 a at the first end 61 a ; the second end 61 b is provided with an air vent 62b, a plurality of vents 62b are distributed around the second end 61b; in this embodiment, the vents 62b are provided as notches, a plurality of notches are distributed around the second end 61b, and penetrate through the column of the second end 61b of the upright column 61 side wall.
  • the first end portion 61 a has a protruding sharp portion 63 , and the sharp portion 63 includes a first inclined surface 63 a and a second inclined surface 63 b . 64;
  • the first inclined surface 63a connects the protruding edge 64 and the first end 61a close to the inner wall of the first through hole 62, and the second inclined surface 63b connects the protruding edge 64 and the first end 61a away from the outer wall of the first through hole 62.
  • the first end cover 48 close to the air extraction pipe 38 is provided with screw posts 55 , which are distributed on the periphery of the first end 61 a of the upright post 61 , that is, the screw posts 55 extend into the accommodating cavity of the accommodating portion 18 .
  • a convex ring 51 is provided around the first end 61 a of the upright column 61 , and a first blocking cover 52 is provided on the outer cover of the convex ring 51 ; , so as to ensure the airtightness of the connection between the first shield 52 and the first end cover 48 close to the exhaust pipe 38 .
  • the inner cavity of the first shield 52 communicates with the first through hole 62 and the vacuum pump 3;
  • the first shield 52 includes a bottom wall 52a and a side wall 52b arranged around the bottom wall 52a;
  • the connecting pipe 52c communicates with the exhaust pipe 38 of the vacuum pump 3;
  • the side wall 52b is provided with a matching plate 52d, and the matching plate 52d is provided with a screw hole corresponding to the screw column 55 on the first end cover 48 close to the exhaust pipe 38, and the first shield 52 is fixed to the receiving pipe 38 by screws.
  • a second blocking cover 54 is provided on the outer cover of the second end portion 61b of the upright column 61 ; a sealing ring 53 is provided between the second blocking cover 54 and the first end cover 48 close to the suction pipe 38 to ensure that the second blocking cover 54 is close to the The tightness of the connection of the first end cap 48 of the exhaust pipe 38 .
  • the inner cavity of the second shield 54 communicates with the first through hole 62 and the first pipeline 16 .
  • the second blocking cover 54 has the same structure as the first blocking cover 52 , and is fixedly connected to the accommodating portion 18 through the cooperation of the screw and the screw column; and a sealing ring 53 is also installed between the second blocking cover 54 and the accommodating portion 18 . , to ensure the tightness of the connection.
  • a floating member 56 is installed in the first through hole 62 of the column 61 , and the floating member 56 reciprocates along the central axis of the first through hole 62 under pressure to open or close the first through hole 62 .
  • the floating member 56 includes a floating column 57, and the radial dimension of the floating column 57 is smaller than the radial dimension of the first through hole 62, so as to form an air extraction channel 70 between the floating column 57 and the upright column 61; the air extraction channel 70 passes through the air outlet 62a It communicates with the inner cavity of the first shield 52 .
  • One end of the floating column 57 is provided with a first baffle 58 , and the other end is provided with a second baffle 59 , and 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 62 of the column 61 , the column 61 is installed in the receiving groove 50 , and the first baffle 58 is matched with the first end 61 a of the column 61 , and the second baffle 59 Cooperate with the second end 61b of the upright column 61; the arrangement of the protruding rib 64 reduces the contact area between the end of the upright column 61 and the first baffle 58 of the floating member 56, effectively ensuring that the first end 61a of the upright column 61 is connected to the floating member 56.
  • the first baffle 58 of the piece 56 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 the pressure difference.
  • the open end of the blind hole 57 a is disposed at the end of the floating member 56 away from the first shield 52 .
  • the air of the low-pressure storage unit passes through the air extraction channel 70 , the air outlet 62 a , the inner cavity of the first shield 52 , and the vacuum pump 3 in sequence.
  • the floating piece 56 is set as an elastic material piece, so as to deform when the floating piece 56 is acted by an external force and the protruding rib 64, so as to ensure that the floating piece 56 is in airtight contact with the protruding rib 64; at the same time, it is ensured that the floating piece 56 recovers after being separated from the protruding rib 64 undisturbed.
  • the floating member 56 is made of silicone material, which has better resilience.
  • the floating member 56 moves into the accommodating cavity of the accommodating part 18 under the action of the internal and external pressure difference, the first baffle 58 is separated from the protruding rib 64, the air outlet 62a is opened, the air extraction channel 70 is opened, and the low pressure
  • the air in the storage unit enters the inner cavity of the second shield 54 through the first pipeline 16, and enters the air extraction channel 70 through the vent 62b (notch) on the second end 61b of the upright 61, and then passes through the first
  • the gap between the baffle 58 and the protruding rib 64 enters the inner cavity of the first shield 52, and finally enters the exhaust pipe 38 through the connecting pipe 52c, and then is discharged through the vacuum pump 3, the exhaust pipe 39, and the second pipeline 17 in sequence.
  • the external pressure is greater than the internal pressure of the low-pressure storage unit.
  • the floating member 56 moves toward the first end cover 48 close to the pumping pipe 38.
  • the first baffle 58 on the floating member 56 and the protruding rib 64 The air outlet 62a is closed, and the air extraction channel 70 is closed, so as to effectively prevent the gas from entering the low pressure storage unit through the exhaust pipe 39 and the exhaust pipe 38 of the vacuum pump 3, resulting in air leakage of the low pressure storage unit.
  • the groove width of the accommodating groove 50 is not less than the overall length of the column 61 to ensure that under the action of the internal and external pressure difference, the floating member 56 has room to move along the central axis of the column 61, so that the first The baffle 58 and the protruding rib 64 are in a state of sealing cooperation and separation, that is, to ensure that the first through hole 62 (vent 62b) is in an open state during pumping, and the first through hole 62 (vent 62b) when the pumping ends. is closed.
  • the floating member 56 When the floating member 56 is in a natural state (not subject to external force), when the groove width of the accommodating groove 50 is smaller than the overall length of the column 61 , it is necessary to ensure that the floating member 56 is installed in the first through hole 62 and is not affected by other external forces
  • the deformation amount is smaller than the maximum deformation amount of the floating member 56; to ensure that under the action of the internal and external pressure difference, when the floating member 56 moves to the vacuum pump 3 along the direction of the central axis of the column 61, there is separation between the first baffle 58 and the protruding ribs 64. That is, it is ensured that the first through hole 62 (vent 62b) is in an open state during pumping.
  • the groove width of the accommodating groove 50 is larger than the overall length of the vertical column 61 .
  • the air leakage prevention unit 40 provided above opens the first through hole 62 (vent 62b ) during pumping, and closes the first through hole 62 (vent 62b ) after the pumping is completed; the above air leakage preventing unit 40 can effectively Avoid air leakage caused by sucking back, ensure the vacuum degree of the low-pressure storage unit, and ensure the preservation effect of food.

Abstract

一种冰箱（1），其具有箱体（2）、顶部设有安装真空泵（3）的容纳部（18）的箱门（13）、低压储藏单元及防漏气单元（40）；防漏气单元（40）包括形成于容纳部（18）上的立柱（61）、贯穿立柱（61）的第一通孔（62）、安装于第一通孔（62）内的浮动柱（57）；立柱（61）具有位于容纳部（18）内的第一端部（61a）及位于第一端部（61a）的出气口（62a）；浮动柱（57）上设有与第一端部（61a）配合以打开或关闭出气口（62a）的第二挡板（59）；浮动柱（57）与立柱（61）共同限定出抽气通道（70）；第一端部（61a）外套设有连通抽气通道（70）和真空泵（3）的第一挡罩（52）；浮动柱（57）受到气压作用能够沿第一通孔（62）作往复运动，以打开或关闭出气口（62a）。

Description

冰箱
交叉引用
本申请要求在2020年7月1日提交中国专利局、申请号为202010622472.6、发明名称为“冰箱”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开属于冰箱的技术领域，尤其涉及一种冰箱。
背景技术
冰箱作为居家生活中不可或缺的电器产品，占据着市场的重要份额。随着消费者对生鲜食品品质要求的提高，随之对冰箱的要求也越来越高，要求冰箱具有更高的配置和更强大的功能，尤其是希望所储藏的生鲜食品能够具有更长的储藏期，从而保证食材的新鲜度，防止营养成分的流失。
为了将食物更好的存储，现已发展出在冰箱内设置真空室，通过抽真空装置对真空室进行抽真空处理。抽真空的主要作用是对真空室内进行除氧，以防止食品变质。当真空室处于负压状态时，气体通过真空泵的排气口倒吸入进气口，将气体排入到真空室内，导致真空室漏气。
发明内容
本公开的一些实施例提供了一种冰箱，包括：
箱体，用于限定隔热的低温储藏间室；
箱门，其顶部设有容纳部；所述箱门可旋转地与所述箱体连接，以打开或封闭所述低温储藏间室；
低压储藏单元，其内可被抽空气形成低于所述冰箱外部大气压的气压以利于食物的保鲜；
真空泵，其设于所述箱门的容纳部内；
防漏气单元，其包括：
立柱，其形成于所述容纳部上，并具有位于所述容纳部内腔中的第一端部和位于所述容纳部内腔外的第二端部；
第一通孔，其贯穿所述立柱，并于所述立柱的第一端部形成出气口；所述第一通孔靠近所述立柱的第二端部一侧用于与所述低压储藏单元相连通；
浮动柱，安装于所述第一通孔内；且所述浮动柱的径向尺寸小于所述第一通孔的径向尺寸，所述浮动柱与所述立柱共同限定出抽气通道；
第一挡板，设于所述浮动柱的一端，用于与所述第一端部配合，以打开或关闭所述出气口；
第一挡罩，套设于所述第一端部外，并与所述容纳部密封连接；所述第一挡罩的内腔连通所述抽气通道和所述真空泵；
所述低压储藏单元抽气时，所述浮动柱受到气压作用向靠近所述真空泵的方向移动，所述第一挡板与所述第一端部相分离，所述出气口打开；所述低压储藏单元的空气依次通过所述抽气通道、出气口、第一挡罩的内腔、真空泵；
所述低压储藏单元停止抽气时，所述浮动柱受到气压作用向远离所述真空泵的移动，所述第一挡板与所述第一端部密封配合，所述出气口关闭。
附图说明
图1为根据本公开一些实施例的冰箱的箱门打开状态结构示意图；
图2为根据本公开一些实施例的冰箱的箱门与真空泵组件的相对配置关系示意图；
图3为根据本公开一些实施例的冰箱的门铰链组件的分解结构示意图；
图4为根据本公开一些实施例的冰箱的真空泵组件管路走向示意图；
图5为根据本公开一些实施例的冰箱的真空泵组件、防漏气单元及箱门容纳部的相对位置示意图；
图6为根据本公开一些实施例的冰箱的箱门顶部容纳部的结构示意图；
图7为根据本公开一些实施例的冰箱的箱门顶部容纳部的另一视角的结构示意图；
图8为根据本公开一些实施例的冰箱的箱门顶部的分解结构示意图；
图9为根据本公开一些实施例的冰箱的箱门顶部的另一视角的分解结构示意图；
图10为根据本公开一些实施例的冰箱的箱门顶部的遮挡盖的结构示意图；
图11为根据本公开一些实施例的冰箱的箱门顶部的局部结构示意图；
图12为根据本公开一些实施例的冰箱的箱门顶部局部结构另一视角的示意图；
图13为图12中A-A方向的剖视图；
图14为图12中A区域的放大图；
图15为根据本公开一些实施例的冰箱的箱门顶部的剖视图；
图16为根据本公开一些实施例的冰箱的箱门顶部的斜视图；
图17为图16中B区域的放大图。
具体实施方式
下面结合具体实施例对本公开作进一步说明，以使本领域的技术人员可以更好的理解本公开并能予以实施，但本公开所要求保护的范围并不局限于具体实施方式中所描述的范围。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
需要说明的是，本公开实施例中所有方向性指示(诸如上、下、左、右、前、后......)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应的随之改变。
另外，在本公开中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。
另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本公开要求的保护范围之内。
请参照图1-图17，一种冰箱1，冰箱1包括隔热的箱体2，箱体2包括外壳2a、内胆2b以及位于二者之间的热绝缘层(未图示)。箱体2限定多个隔热的低温储藏间室以储藏食物等物品。在本实施例中，这些低温储藏间室分别是位于上部的冷藏室10、位于底部的冷冻室。低温储藏间室可由各自对应的箱门13关闭。本公开中冷藏室10设置对开门式的箱门13，冷冻室亦设置对开门式的箱门。
冰箱1具有形成闭环的蒸发式制冷系统。制冷系统至少包括压缩机(未图示)、冷凝器(未图示)、节流装置(未图示)以及蒸发器(未图示)。鉴于这样的制冷系统在现有技术中为公知技术，因此省略对其进一步的描述。当然，冰箱1也可以使用其它形式的制冷系统(如吸收式制冷系统、热电制冷系统)也是可以的。
冰箱1设有具有可保持在低压状态的低压储藏单元以及用以将气体从低压储藏单元内抽离的真空泵组件。在本实施例中，低压储藏单元设置在冷藏室10内。本实施例中，真空泵组件设于低压储藏单元所在的冷藏室10的箱门13的顶部。应当理解，在其他的实施例中，低压储藏单元也可以设置在其他低温储藏间室内，例如温度范围可在冷藏温区和冷冻温区之间切换的变温室。真空泵组件设于低压储藏单元所在的低温储藏间室的箱门13的顶部。
当低压储藏单元关闭且真空泵组件启动时，位于低压储藏室内的气体被抽离，低压储藏室处于低压状态。根据本公开一个优选的实施例，在抽空程序结束时，低压储藏室内的压强介于一个标准大气压和绝对真空之间。由于低压储藏室内的气压低于标准大气压，本领域技术人员也俗称其“真空储藏”，将气压低于标准大气压的这种状态称为“真空状态”。
需要说明的是，本公开中低压储藏单元可设置为抽屉的形式，也可以设置为一个盒子的形式(固定或可拆卸形式，在需要抽真空时与真空泵连接进行抽真空)，也可设置为塑封袋的形式(抽真空后封口)，其具体形式根据具体方案来确定。
如图1-图3所示，箱体2的顶板14上设有门铰链组件6，门铰链组件6 包括门铰板7及门铰链盒8；门铰板7上设有第一连接件，箱门13上设有与所述第一连接件旋转连接的第二连接件；且第一连接件和第二连接件至少其中之一上设有管路通道。本实施例中，第一连接件包括连接套筒73，第二连接件包括套设于所述连接套筒73内或外的转动套筒15；位于内圈的所述转动套筒15或连接套筒73的内孔形成管路通道。
具体的，门铰板7包括固定座板71及连接座板72。固定座板71与箱体2的顶板14的外表面贴合；固定座板71上设有第一连接孔组75，第一连接孔组75内安装有螺钉，以将固定座板71与箱体2的顶板14固定。连接座板72伸出于箱体2前侧，且其上设有连接套筒73。箱门13顶部设有转动套筒15，转动套筒15套设于连接套筒73外侧或内侧，以相互配合使箱门13可绕连接套筒73的中心轴线转动。其中门铰板7的边沿处设有多个向上突出的扣位74。
门铰链盒8包括盒底81及环绕盒底81的盒侧板82。其中，盒侧板82上设有多个与门铰板7上扣位74位置相对应的第一卡钩83，第一卡钩83与门铰板7上的扣位74扣合，以将门铰板7与门铰链盒8固定连接。其中门铰板7完全安装于门铰链盒8内。门铰链盒8的盒底81上设有第二连接孔组84，第二连接孔组84内安装有螺钉，以将门铰链盒8与箱体2的顶板14固定。
如图1-图17所示，真空泵组件包括真空泵3及套设于真空泵3外的橡胶套9。真空泵3上设有抽气管38及排气管39。抽气管38与排气管39并列设置，且位于真空泵3的同一端。抽气管38上连接有第一管路16，第一管路16沿箱门13向下延伸，并于箱门13下部区域弯折向箱门13靠近冷藏室10一侧的方向延伸。在本公开的一些实施例中，箱门13靠近冷藏室10的一侧设有穿孔13a，第一管路16设于箱门13的发泡层内，并于发泡层内向下延伸，最终于穿孔13a穿出。排气管39上连接有第二管路17，第二管路17向转动套筒15延伸，并由下向上穿过位于内圈的转动套筒15或连接套筒73；第二管路17与冰箱1外的大气环境相连通。本实施例中，第二管路17设于箱门13的发泡层内，并于发泡层内向转动套筒15延伸，最终穿过位于内圈的转动 套筒15或连接套筒73，以与冰箱外的大气环境相连通。在本公开的一些实施例中，第一管路16及第二管路17的设置，使气体在距离真空泵3一段距离的位置排出，有效避免气体在真空泵3周围排出时所引起的凝露。另外，第一管路16及第二管路17均设于发泡层内，能够利用发泡层的保温性使通过第一管路16及第二管路17内的气体温度得到一定提升，能够避免出气时导致出气口处凝露。另外本公开的设置将由低压储藏单元内抽出的气体直接排出冰箱1，从而避免冷藏室10内其它区域的食物互相串味，影响食品的保鲜效果。
在本公开的一些实施例中，第一管路16由穿孔13a穿出时，以垂直于箱门13的方向延伸。箱门13关闭时，第一管路16与低压储藏单元的低压储藏室相连通；箱门13打开时，第一管路16与低压储藏单元相分离，且低压储藏单元密封。作为一种可实施的方式，低压储藏单元上设有连通阀，箱门13关闭时，在第一管路16的触发作用下，连通阀打开，第一管路16与低压储藏单元内部相连通；当箱门13打开时，第一管路16与低压储藏单元相分离，连通阀关闭，低压储藏单元密封。其连通方式不局限于本实施例中所描述的方式。
作为另一种可实施的方式，低压储藏单元连接于箱门13上，第一管路16与低压储藏单元直接相连通；箱门13打开时，箱门13带动设于其上有低压储藏单元移出低压储藏间室，用户根据需要打开低压储藏单元以放取物品。
橡胶套9与容纳部18相抵接，且橡胶套9具有安装真空泵3的主体部91，主体部91上设有与真空泵3形状相一致的安装腔92；主体部91的安装腔92的径向尺寸不大于真空泵3对应位置的径向尺寸，使橡胶套9紧贴真空泵3，以及时吸收真空泵3上的振动。
主体部91的外围设有多个沿主体部91的中心轴并列设置并环绕主体部91的凸起93，以提高橡胶套9的变形能力，改善减振效果。在本公开的一些实施例中，橡胶套9的邵氏硬度为35～40。
冰箱1的箱门13顶部形成有上端开口且用于容置真空泵3的容纳部18， 容纳部18的开口端处安装有遮挡盖30，以封闭其开口端。容纳部18的开口端边沿处设有凹槽19，遮挡盖30的边沿处设有与凹槽19相配合的凸板31；凸板31安装于凹槽19内；通过注入密封胶以使遮挡盖30与容纳部18密封连接。以上设置将真空泵组件封装在箱门13顶部的容纳部18内，使整个系统不漏气，有效防止真空泵组件自身工作的噪音以气体作为介质传播出去。本实施例中，容纳部18包括第一围板47及位于第一围板47两端的第一端盖48；容纳部18的两个相对的第一围板47内壁上设有第二卡块41；遮挡盖30的两相对侧上设有第二卡钩32，第二卡钩32与第二卡块41相配合，将遮挡盖30与容纳部18固定连接。
容纳部18的底部的两端均设有限位件42，两个限位件42共同限定出安装间隙43，以容纳真空泵3；且限位件42与真空泵3的两端部相抵接，以对真空泵3位置进行限定。容纳部18的第一围板47内壁上设有卡突44，卡突44与橡胶套9相配合，以固定真空泵3。本实施例中，卡突44与橡胶套9的主体部91相抵接，即卡突44位于橡胶套9上相邻两个凸起93之间。以上容纳部18内的限位件42与卡突44的设置能够有效固定真空泵组件，且方便安装。
在本公开的一些实施例中，橡胶套9(凸起93)的外径尺寸不小于容纳部18的相应位置尺寸，以在橡胶套9安装于容纳部18内部时，橡胶套9与容纳部18内壁相接触并可相互作用产擦力，确保安装牢固。
如图13，并参见图8-图9，容纳部18的底部设有向其开口端延伸的第一接头45；第一接头45与真空泵3的排气管39相连接。容纳部18上靠近第一接头45的一端外部套有罩壳33；容纳部18的外壁面上设有第一卡块46，罩壳33上设有与第一卡块46相配合的卡孔34，通过第一卡块46与卡孔34配合实现容纳部18与罩壳33的固定连接。在本公开一些实施例中，第一接头45设于容纳部18的一端，罩壳33包括罩于第一围板47外部的第二围板35及罩于第一接头45所在侧的第一端盖48外侧的第二端盖36。其中第一卡块46设于容纳部18的第一围板47及靠近第一接头45的第一端盖48上；卡孔 34设于罩壳33的第二围板35及第二端盖36上，以加强罩壳33与容纳部18的连接强度，提高安装稳定性。
罩壳33上设有第二接头37，第二接头37上安装有第二管路17。第二接头37与容纳部18的第一围板47上的第一接头45相连通；即第二接头37与排气管39相连通。第二接头37包括远离罩壳33一端的导向柱37a，导向柱37a呈倒锥形，以方便第二管路17的安装；第二接头37靠近罩壳33的位置设有挡板37b，挡板37b与导向柱37a之间设有凹环37c，以有效避免第二管路17脱落；第二管路17通过导向柱37a安装于第二接头37上，并由挡板37b止挡。其中，第二管路17于凹环37c处的扩张程度小于第二管路17于导向柱37a处的扩张程度，能够有效避免第二管路17脱落。其中，第二管路17的内径记为D 1，导向柱37a靠近凹环37c的一端的外径为D 2；其中，D 1＜D 2。
箱门13关闭时，第一管路16与低压储藏单元相连通；真空泵3工作时，低压储藏单元内的空气依次经过第一管路16、抽气管38、真空泵3、排气管39、第二管路17，最终由第二管路17排出箱体2。以避免将由低压储藏单元内抽出的气体直接排入冰箱1内部而使冷藏室10内其它区域的食物互相串味，影响食品的保鲜效果；另一方面真空泵设于箱门上能够有效避免振动向箱体的传递并降低噪音，优化冰箱的整体性能，提高用户体验。
如图11-图17所示，冰箱1具有与真空泵3的抽气管38相连通的防漏气单元40，防漏气单元40能够避免抽真空后低压储藏单元内形成负压而导致的漏气。在现有结构中，抽真空后，低压储藏单元处于负压状态时，气体通过真空泵3的排气管39倒吸入抽气管38，并通过抽气管38将气体排入到低压储藏单元内，导致低压储藏单元漏气，降低抽真空的效率。本实施例的防漏气单元40能够有效避免倒吸所引起的漏气现象发生，从而确保低压储藏单元的真空度，确保食物的保鲜效果。
防漏气单元40具有凸出于靠近抽气管38的第一端盖48上的立柱61，立柱61包括位于容纳部18内部的第一端部61a及位于容纳部18外部的第二端部61b。
立柱61具有与容纳部18的容纳腔相连通的第一通孔62；第一通孔62贯穿立柱61，并于第一端部61a形成出气口62a；第二端部61b上设有通气口62b，多个通气口62b环绕第二端部61b分布；本实施例中，通气口62b设置为缺口，多个缺口环绕第二端部61b分布，且贯穿立柱61的第二端部61b的柱侧壁。第一端部61a具有凸出的尖锐部63，尖锐部63包括第一斜面63a和第二斜面63b，第一斜面63a和第二斜面63b相交形成环绕立柱61的第二端部61b的突棱64；第一斜面63a连接突棱64与第一端部61a靠近第一通孔62的内壁面，第二斜面63b连接突棱64与第一端部61a远离第一通孔62的外壁面。其中，靠近抽气管38的第一端盖48上设有螺钉柱55，螺钉柱55分布于立柱61的第一端部61a的外围，即螺钉柱55向容纳部18的容纳腔内延伸。
环绕立柱61的第一端部61a设有凸环51，凸环51外罩设有第一挡罩52；第一挡罩52与靠近抽气管38的第一端盖48之间设有密封圈53，以确保第一挡罩52与靠近抽气管38的第一端盖48连接的密闭性。第一挡罩52的内腔连通第一通孔62和真空泵3；第一挡罩52包括底壁52a及环绕底壁52a设置的侧挡壁52b；底壁52a上设有连通其两侧的连接管52c，连接管52c与真空泵3的抽气管38相连通；侧挡壁52b套设于立柱61的第一端部61a外，并与密封圈53相配合。侧挡壁52b上设有配合板52d，配合板52d上设有与靠近抽气管38的第一端盖48上的螺钉柱55相对应的螺钉孔，通过螺钉将第一挡罩52固定于容纳部18上靠近抽气管38的第一端盖48上。
立柱61的第二端部61b外罩设有第二挡罩54；第二挡罩54与靠近抽气管38的第一端盖48之间设有密封圈53,以确保第二挡罩54与靠近抽气管38的第一端盖48连接的密闭性。第二挡罩54的内腔连通第一通孔62和第一管路16。本实施例中，第二挡罩54与第一挡罩52结构相同，通螺钉与螺钉柱的配合与容纳部18固定连接；且第二挡罩54与容纳部18之间亦安装密封圈53，以确保连接的密封性。
立柱61的第一通孔62内安装有浮动件56，浮动件56在压力作用下沿第一通孔62的中心轴线作往复移动，以打开或关闭第一通孔62。
浮动件56包括浮动柱57，浮动柱57的径向尺寸小于第一通孔62的径向尺寸，以于浮动柱57与立柱61之间形成抽气通道70；抽气通道70通过出气口62a与第一挡罩52的内腔相连通。浮动柱57一端外围设有第一挡板58，另一端外围设有第二挡板59，于第一挡板58和第二挡板59之间形成容纳槽50。浮动件56的浮动柱57安装于立柱61的第一通孔62内，立柱61安装于容纳槽50内，且第一挡板58与立柱61的第一端部61a配合，第二挡板59与立柱61的第二端部61b相配合；突棱64的设置减小了立柱61端部与浮动件56的第一挡板58的接触面积，有效确保立柱61的第一端部61a与浮动件56的第一挡板58接触配合的密封性。浮动件56的浮动柱57上设有盲孔57a，以减小浮动件56的壁厚；即减轻浮动件56的整体重量，以确保其在压力差作用下移动。本实施例中，盲孔57a的开口端设于浮动件56其远离第一挡罩52的一端。所述低压储藏单元的空气依次通过抽气通道70、出气口62a、第一挡罩52的内腔、真空泵3。
浮动件56设置为弹性材料件，以在浮动件56受外力作用与突棱64作用时发生变形，从而确保浮动件56与突棱64密闭接触；同时确保浮动件56与突棱64分离后恢复原状。本实施例中，浮动件56为硅胶材料，其具有更好的回弹性。
抽气装置抽气时，浮动件56在内外压力差的作用下向容纳部18的容纳腔内移动，第一挡板58与突棱64分离，出气口62a打开，抽气通道70打开，低压储藏单元内的空气通过第一管路16进入第二挡罩54的内腔，并通过立柱61的第二端部61b上的通气口62b(缺口)进入抽气通道70内，尔后通过第一挡板58与突棱64之间的间隙进入第一挡罩52的内腔，最终通过连接管52c进入抽气管38，尔后依次经过真空泵3、排气管39、第二管路17排出。
抽气结束后，外部压力大于低压储藏单元的内部压力，在压力作用下，浮动件56向靠近抽气管38的第一端盖48移动，浮动件56上的第一挡板58与突棱64密封配合，出气口62a关闭，抽气通道70关闭，从而有效避免气体通过真空泵3的排气管39、抽气管38而进入低压储藏单元，导致低压储藏 单元漏气。
浮动件56处于自然状态下时的容纳槽50的槽宽不小于立柱61的整体长度，以确保在内外压差作用下，浮动件56沿立柱61中心轴线方向有移动空间，从而能够使第一挡板58与突棱64之间有密封配合和分离的状态，即确保抽气时第一通孔62(通气口62b)处于打开状态，抽气结束时第一通孔62(通气口62b)处于关闭状态。
在浮动件56处于自然状态(不受外力作用)下时的容纳槽50的槽宽小于立柱61的整体长度时，需要确保浮动件56安装于第一通孔62内时且不受其它外力作用时的变形量小于浮动件56的最大变形量；以确保在内外压差作用下，浮动件56沿立柱61中心轴线方向向真空泵3移动时，第一挡板58与突棱64之间存在分离状态，即确保抽气时第一通孔62(通气口62b)处于打开状态。具体地，采用浮动柱57不受外力作用时所述容纳槽50的槽宽大于所述立柱61的整体长度的设置。
以上设置的防漏气单元40于抽气时打开第一通孔62(通气口62b)，并于抽气结束后关闭第一通孔62(通气口62b)；以上防漏气单元40能够有效避免倒吸所引起的漏气现象，确保低压储藏单元的真空度，确保食物的保鲜效果。
以上所述，仅是本公开的较佳实施例而已，并非是对本公开作其它形式的限制，任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例应用于其它领域，但是凡是未脱离本公开技术方案内容，依据本公开的技术实质对以上实施例所作的任何简单修改、等同变化与改型，仍属于本公开技术方案的保护范围。

Claims (10)

  1. 冰箱，包括：
    箱体，用于限定隔热的低温储藏间室；
    箱门，其顶部设有容纳部，所述箱门可旋转地与所述箱体连接，以打开或封闭所述低温储藏间室；
    低压储藏单元，其内可被抽空气形成低于所述冰箱外部大气压的气压以利于食物的保鲜；
    真空泵，其设于所述箱门的容纳部内；
    防漏气单元，其包括：
    立柱，其形成于所述容纳部上，并具有位于所述容纳部内腔中的第一端部和位于所述容纳部内腔外的第二端部；
    第一通孔，其贯穿所述立柱，并于所述立柱的第一端部形成出气口，所述第一通孔靠近所述立柱的第二端部一侧用于与所述低压储藏单元相连通；
    浮动柱，安装于所述第一通孔内，且所述浮动柱的径向尺寸小于所述第一通孔的径向尺寸，所述浮动柱与所述立柱共同限定出抽气通道；
    第一挡板，设于所述浮动柱的一端，用于与所述第一端部配合，以打开或关闭所述出气口；
    第一挡罩，套设于所述第一端部外，并与所述容纳部密封连接，所述第一挡罩的内腔连通所述抽气通道和所述真空泵；
    所述低压储藏单元抽气时，所述浮动柱受到气压作用向靠近所述真空泵的方向移动，所述第一挡板与所述第一端部相分离，所述出气口打开；所述低压储藏单元的空气依次通过所述抽气通道、出气口、第一挡罩的内腔、真空泵；
    所述低压储藏单元停止抽气时，所述浮动柱受到气压作用向远离所述真空泵的移动，所述第一挡板与所述第一端部密封配合，所述出气口关闭。
  2. 根据权利要求1所述的冰箱，其特征在于：所述第一端部具有凸出的尖锐部，所述尖锐部包括第一斜面和第二斜面，所述第一斜面和第二斜面相交 形成环绕所述第一端部并用于与所述第一挡板相配合的突棱；所述第一斜面连接所述突棱与所述第一端部上靠近所述第一通孔的内壁面，所述第二斜面连接所述突棱与所述第一端部上远离所述第一通孔的外壁面。
  3. 根据权利要求1或2所述的冰箱，其特征在于：所述第二端部外罩设有第二挡罩，所述第二挡罩内腔用于与所述低压储藏单元相连通；所述第二端部的侧壁上设有连通所述第二挡罩内腔与所述第一通孔的通气口；所述浮动柱上靠近第二挡罩的一端设有第二挡板，于所述第一挡板和第二挡板之间形成容置所述立柱的容纳槽；所述第二挡板用于与所述立柱的第二端部相配合。
  4. 根据权利要求3所述的冰箱，其特征在于：所述浮动柱不受外力作用状态下，所述容纳槽的槽宽大于所述立柱的长度。
  5. 根据权利要求3所述的冰箱，其特征在于：所述浮动柱上设有盲孔，且所述盲孔的开口端设于其靠近所述第二挡罩的一端。
  6. 根据权利要求1或2所述的冰箱，其特征在于：所述第一挡罩包括底壁及环绕所述底壁的侧挡壁；所述底壁上设有连通其两侧的连接管，所述连接管与所述真空泵相连通；所述侧挡壁套设于所述立柱的第一端部外。
  7. 根据权利要求6所述的冰箱，其特征在于：所述第一挡罩的侧挡壁与所述容纳部之间设有密封圈。
  8. 根据权利要求6所述的冰箱，其特征在于：所述容纳部上于所述第一端部的外围设有螺钉柱；
    所述第一挡罩的侧挡壁上设有配合板，所述配合板上设有与容纳部上的螺钉柱相对应的螺钉孔，通过螺钉将所述第一挡罩与所述容纳部固定。
  9. 根据权利要求7所述的冰箱，其特征在于：环绕所述立柱的第一端部设有凸环，所述第一挡罩套设于所述凸环外。
  10. 根据权利要求1所述的冰箱，其特征在于：所述箱体顶部固定有门铰板，所述门铰板上设有第一连接件；
    所述箱门具有与所述第一连接件旋转连接的第二连接件；其中，所述箱门绕所述第二连接件的旋转轴旋转；所述第一连接件和第二连接件至少其中 之一上设有管路通道；
    所述真空泵具有排气管及用于与所述低压储藏单元相连通的抽气管；
    所述防漏气单元的第二端部连接有用于与所述低压储藏单元相连通的第一管路；所述第一管路沿所述箱门延伸并由所述箱门靠近所述低温储藏间室的一侧穿出；
    所述排气管连通有第二管路；所述第二管路穿过所述管路通道，以与所述箱体外的大气环境相连通；
    所述第一管路与所述低压储藏单元相连通且所述真空泵工作时，所述低压储藏单元内的空气依次经过所述第一管路、抽气通道、出气口、第一挡罩的内腔、抽气管、真空泵、排气管、第二管路，最终由所述第二管路排出所述箱体。
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