CN111765694A - Refrigerator with a door - Google Patents

Refrigerator with a door Download PDF

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Publication number
CN111765694A
CN111765694A CN202010619937.2A CN202010619937A CN111765694A CN 111765694 A CN111765694 A CN 111765694A CN 202010619937 A CN202010619937 A CN 202010619937A CN 111765694 A CN111765694 A CN 111765694A
Authority
CN
China
Prior art keywords
silencing
door
box
unit
communicated
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202010619937.2A
Other languages
Chinese (zh)
Inventor
杨春
赵振雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Shandong Refrigerator Co Ltd
Original Assignee
Hisense Shandong Refrigerator Co Ltd
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 Hisense Shandong Refrigerator Co Ltd filed Critical Hisense Shandong Refrigerator Co Ltd
Priority to CN202010619937.2A priority Critical patent/CN111765694A/en
Publication of CN111765694A publication Critical patent/CN111765694A/en
Pending legal-status Critical Current

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Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention provides a refrigerator, which comprises a door hinge box arranged at the top of a refrigerator body and a vacuum pump arranged at the top of a refrigerator door and provided with an exhaust pipe, wherein a silencing unit is arranged on the door hinge box, one end of the silencing unit is communicated with the exhaust pipe, and the other end of the silencing unit is communicated with the atmospheric environment outside the refrigerator body; the silencing unit includes: the silencing chamber comprises a silencing chamber wall, a first baffle, a second baffle and a plurality of first baffles, wherein one end of the first baffle and the silencing chamber wall define a first micro-channel; one end of the second baffle, which is far away from the first microchannel, and the wall of the silencing cavity jointly define a second microchannel; the first microchannel and the second microchannel are respectively communicated with the unit cavities adjacent to the first microchannel and the second microchannel at two sides; the vacuum pump is arranged on the box door, and the silencing unit is arranged in the hinge box at the top of the box body, so that the current space is fully utilized, the transmission of vibration to the box body can be effectively avoided, the noise is reduced, the overall performance of the refrigerator is optimized, and the user experience is improved.

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 vacuumizing device works, vibration noise is generated and is directly transmitted to the refrigerator body, the overall performance of the refrigerator is affected, and the user experience is reduced.
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 door hinge assembly is arranged at the top of the box body and comprises a door hinge plate and a door hinge box covered outside the door hinge plate;
a door rotatably coupled to the door hinge to open or close the low-temperature storage compartment;
a low-pressure storage unit, wherein air can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to keep food fresh;
the vacuum pump is arranged at the top of the box door; the low-pressure storage unit is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit;
the silencing unit is arranged on the door hinge box; the noise reduction unit includes:
a sound-deadening chamber wall defining a sound-deadening chamber; one end of the silencing chamber is communicated with the exhaust pipe, and the other end of the silencing chamber is communicated with the atmosphere outside the box body;
one end of the first baffle and the wall of the sound attenuation cavity jointly define a first micro-channel;
the second baffles and the first baffles are distributed at intervals along the central axis direction of the silencing chamber to divide the silencing chamber into a plurality of unit cavities; one end of the second baffle, which is far away from the first microchannel, and the wall of the silencing cavity jointly define a second microchannel;
wherein the first microchannel and the second microchannel are respectively communicated with the unit cavities adjacent to the first microchannel and the second microchannel on two sides.
Preferably, the silencing unit comprises a first silencing piece arranged on the door hinge box and a second silencing piece matched with the first silencing piece;
the first silencing piece comprises a first end plate and a second end plate which are respectively arranged at two opposite ends of the first silencing piece, and a side plate which is connected with the first end plate and the second end plate; the box bottoms of the first end plate, the second end plate, the side plate and the door hinge box are surrounded with a silencing cavity with an opening;
the second sound attenuating element includes a base plate covering the open end of the first sound attenuating element to define the sound attenuating chamber in cooperation with the first sound attenuating element.
Preferably, the plurality of first baffles are arranged in the sound attenuation cavity of the first sound attenuation piece, and the end part of each first baffle close to the opening end of the first sound attenuation piece and the base plate on the second sound attenuation piece jointly define the first micro-channel;
the second baffles are arranged on the substrate of the second silencing piece, and the end part of the second baffles, far away from the substrate, and the side plate, far away from the opening end of the first silencing piece, of the first silencing piece jointly define the second microchannel.
Preferably, the opening end of the first silencing part is provided with a mounting table; the base plate of the second silencing piece is installed on the installation table.
Preferably, the two end parts of the silencing unit are respectively provided with a first connecting pipe and a first connecting through hole which are communicated with the unit cavity; the first connecting pipe is communicated with the exhaust pipe through a second pipeline; and the door hinge box is provided with a second communication hole communicated with the atmospheric environment outside the box body, and the second communication hole is communicated with the first communication hole.
Preferably, a first connecting piece is arranged on the door hinge plate; the box door is provided with a second connecting piece which is rotationally connected with the first connecting piece; the box door rotates around the rotating shaft of the second connecting piece; at least one of the first connecting piece and the second connecting piece is provided with a pipeline channel;
the second pipeline passes through the pipeline channel; the second pipeline is communicated with the first connecting pipe through a hose or a rotary joint;
when the vacuum pump works, air in the low-pressure storage unit sequentially passes through the air suction pipe, the vacuum pump, the exhaust pipe and the silencing unit, and is finally discharged out of the box body through the silencing unit.
Preferably, a foaming layer is arranged in the box door, and the second pipeline is arranged in the foaming layer.
Preferably, the top of the box door is provided with an accommodating part for installing the vacuum pump; the bottom of the accommodating part is provided with a first joint extending to the opening end of the accommodating part; the first joint is communicated with an exhaust pipe of the vacuum pump.
Preferably, a cover is sleeved outside one end of the accommodating part close to the first joint; a first clamping block is arranged on the outer wall surface of the accommodating part, a clamping hole matched with the first clamping block is formed in the housing, and the accommodating part is fixedly connected with the housing through the matching of the first clamping block and the clamping hole; and a second joint is arranged on the housing, one end of the second joint is communicated with the first joint on the accommodating part, and the other end of the second joint is communicated with the second pipeline.
Preferably, the second joint comprises a guide post which is far away from one end of the housing and is in an inverted cone shape; one end of the second joint close to the housing is provided with a baffle for stopping the second pipeline; and a concave ring is arranged between the baffle and the guide post.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a refrigerator, which comprises a door hinge box arranged at the top of a refrigerator body and a vacuum pump arranged at the top of a refrigerator door and provided with an exhaust pipe, wherein a silencing unit is arranged on the door hinge box, one end of the silencing unit is communicated with the exhaust pipe, and the other end of the silencing unit is communicated with the atmospheric environment outside the refrigerator body; the silencing unit includes: the silencing chamber comprises a silencing chamber wall, a first baffle, a second baffle and a plurality of first baffles, wherein one end of the first baffle and the silencing chamber wall define a first micro-channel; one end of the second baffle, which is far away from the first microchannel, and the wall of the silencing cavity jointly define a second microchannel; the first microchannel and the second microchannel are respectively communicated with the unit cavities adjacent to the first microchannel and the second microchannel at two sides; the vacuum pump is arranged on the box door, and the silencing unit is arranged in the hinge box at the top of the box body, so that the current space is fully utilized, the transmission of vibration to the box body can be effectively avoided, the noise is reduced, the overall performance of the refrigerator is optimized, and the user experience is improved.
Drawings
FIG. 1 is a schematic structural view illustrating a door of a refrigerator according to the present invention in an opened state;
FIG. 2 is a schematic diagram illustrating a relative arrangement of a door and a vacuum pump assembly of the refrigerator according to the present invention;
FIG. 3 is an exploded view of a door hinge assembly of the refrigerator according to the present invention;
FIG. 4 is a schematic piping diagram illustrating the vacuum pump assembly of the refrigerator according to the present invention;
FIG. 5 is a schematic diagram illustrating the relative positions of the vacuum pump assembly and the door receiving portion of the refrigerator according to the present invention;
FIG. 6 is a schematic structural view of a top of a door of a refrigerator according to the present invention;
FIG. 7 is an exploded view of the top of the door of the refrigerator according to the present invention;
FIG. 8 is an exploded view of the top of the door of the refrigerator according to another aspect of the present invention;
FIG. 9 is an exploded view of the top of the door of the refrigerator according to another aspect of the present invention;
FIG. 10 is a schematic view of a shielding cover at the top of the door of the refrigerator according to the present invention;
FIG. 11 is a first schematic view illustrating a partial structure of a top of a door of a refrigerator according to the present invention;
FIG. 12 is a second schematic view of a top portion of a refrigerator door according to the present invention;
FIG. 13 is a third schematic view of a top portion of a door of a refrigerator according to the present invention;
FIG. 14 is a plan view of a top of a door of the refrigerator according to the present invention;
FIG. 15 is a cross-sectional view taken along line A-A of FIG. 14;
FIG. 16 is a cross-sectional view taken in the direction B-B of FIG. 14;
FIG. 17 is an exploded view of the door hinge assembly and the silencing unit of the refrigerator of the present invention;
FIG. 18 is a schematic structural view of a door hinge box of the refrigerator according to the present invention;
fig. 19 is a schematic structural view of a second silencing part of the refrigerator according to the present invention;
fig. 20 is a schematic structural view of a door hinge box of a refrigerator according to the present invention and a sectional view thereof.
In the above figures:
a refrigerator 1; a box body 2; a housing 2 a; an inner container 2 b; a door 13; a top plate 14; the sleeve 15 is rotated; a refrigerating chamber 10; a door hinge assembly 6; a door hinge plate 7; a fixed seat plate 71; a connection seat plate 72; a connecting sleeve 73; a fastening position 74; the first connection hole group 75; a door hinge box 8; a box bottom 81; a box side plate 82; a first hook 83; a second set of connecting holes 84; a vacuum pump 3; an exhaust tube 38; an exhaust pipe 39; a first conduit 16; a second pipe 17; a rubber sleeve 9; the perforations 13 a; a main body portion 91; a mounting cavity 92; a projection 93; the accommodating portion 18; a recess 19; the second latch 41; a stopper 42; a mounting gap 43; a snap 44; a first joint 45; a first latch 46; a first shroud 47; a first end cap 48; a shielding cover 30; a convex plate 31; a second hook 32; a housing 33; a chucking hole 34; a second shroud 35; a second end cap 36; a second joint 37; the guide post 37 a; a baffle 37 b; a concave ring 37 c; a muffler unit 24; the first silencing piece 25; the first end plate 25 a; the first connecting pipe 251; a second end plate 25 b; a first communication hole 252; side plates 25 c; the first baffle 25 d; a mounting table 253; a first microchannel 254; a second noise reducing member 26; a substrate 26 a; a second baffle 26 b; a second microchannel 261; a sound-deadening chamber 27; a unit chamber 28; the second communication hole 85.
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 to explain 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. 1-16, 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 13. The refrigerating chamber 10 is provided with a side-by-side door 13, and the freezing chamber is also provided with a side-by-side door.
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 that can be maintained in a low pressure state and a vacuum pump assembly for pumping gas from the low pressure storage unit. In the present embodiment, the low pressure storage unit is provided inside the refrigerating compartment 10. In this embodiment, the vacuum pump assembly is disposed on the top of the door 13 of the refrigerating chamber 10 in which the low pressure storage unit is located. It should be understood that in other embodiments, the low pressure storage unit may be disposed within other low temperature storage compartments, such as a temperature change compartment having a temperature range that is switchable between a refrigerated temperature zone and a refrigerated temperature zone. The vacuum pump assembly is located on top of the door 13 of the cryogenic storage compartment in which the low pressure storage unit is located.
When the low pressure storage unit is turned off and the vacuum pump assembly is turned on, gas located in the low pressure storage chamber is evacuated and the low pressure storage chamber is in a low pressure state. According to a preferred embodiment of the present invention, at the end of the evacuation process, the pressure within the low pressure storage chamber is between one standard atmosphere and absolute vacuum. Since the pressure in the low-pressure storage chamber is lower than the standard atmospheric pressure, the person skilled in the art is also commonly referred to as "vacuum storage" and this state in which the pressure is lower than the standard atmospheric pressure is referred to as "vacuum state".
It should be noted that the low-pressure storage unit in the present invention may be configured in the form of a drawer, may also be configured in the form of a box (fixed or detachable form, which is connected to a vacuum pump for vacuum pumping when vacuum pumping is required), and may also be configured in the form of a plastic packaging bag (sealed after vacuum pumping), and the specific form thereof is determined according to a specific scheme.
As shown in fig. 1-3, a door hinge assembly 6 is arranged on a top plate 14 of the box body 2, and the door hinge assembly 6 comprises a door hinge plate 7 and a door hinge box 8; a first connecting piece is arranged on the door hinge plate 7, and a second connecting piece which is rotationally connected with the first connecting piece is arranged on the door 13; and at least one of the first connecting piece and the second connecting piece is provided with a pipeline channel. In this embodiment, the first connecting member includes a connecting sleeve 73, and the second connecting member includes a rotating sleeve 15 sleeved inside or outside the connecting sleeve 73; the inner bore of the rotating sleeve 15 or the connecting sleeve 73 located in the inner ring forms a line channel.
Specifically, the door hinge plate 7 includes a fixing seat plate 71 and a connecting 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 fix the fixed seat plate 71 with the top plate 14 of the cabinet 2. The connection seat plate 72 is extended from the front side of the case 2 and provided with a connection sleeve 73. The top of the box door 13 is provided with a rotating sleeve 15, and the rotating sleeve 15 is sleeved outside or inside the connecting sleeve 73 so as to cooperate with each other to enable the box door 13 to rotate around the central axis of the connecting sleeve 73. Wherein the edge of the door hinge plate 7 is provided with a plurality of fastening positions 74 protruding upwards.
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 fastening positions 74 on the door hinge plate 7, and the first hooks 83 are fastened with the fastening positions 74 on the door hinge plate 7 so as to fixedly connect the door hinge plate 7 with the door hinge box 8. Wherein the door hinge plate 7 is completely mounted in the door hinge box 8. A second set of connecting holes 84 is provided in the box bottom 81 of the door hinge box 8, and screws are installed in the second set of connecting holes 84 to fix the door hinge box 8 to the top plate 14 of the box body 2. Wherein, a silencing unit 24 with one end communicated with the atmosphere outside the refrigerator 1 is arranged in the door hinge box 8.
As shown in fig. 1-16, 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 an exhaust pipe 39 and an exhaust pipe 38. The evacuation pipe 38 is arranged in parallel with the exhaust pipe 39 and is located at the same end of the vacuum pump 3. The first duct 16 is connected to the air exhaust duct 38, and the first duct 16 extends downward along the door 13 and bends at a lower region of the door 13 to extend toward a side of the door 13 close to the refrigerating compartment 10. In this embodiment, a through hole 13a is formed on a side of the door 13 close to the refrigerating chamber 10, and the first pipeline 16 is disposed in the foaming layer of the door 13, extends downward in the foaming layer, and finally passes through the through hole 13 a. The exhaust pipe 39 is connected with a second pipeline 17, the second pipeline 17 extends towards the rotating sleeve 15 and penetrates through the rotating sleeve 15 or the connecting sleeve 73 positioned at the inner ring from bottom to top; one end of the second pipeline 17 far away from the vacuum pump 3 is communicated with a silencing unit 24; the silencing unit 24 can absorb the noise of the gas discharged from the second pipe 17 to optimize the overall performance of the refrigerator and improve the user experience.
Specifically, when the second pipeline 17 is a flexible pipe, the silencing unit 24 and the second pipeline 17 may be directly connected, so as to ensure the rotation function of the door 13 and maintain the connectivity between the silencing unit 24 and the second pipeline 17 when the door 13 is opened or closed; if the second pipeline 17 is a hard pipe, the silencing unit 24 and the second pipeline 17 can be connected through a hose or a rotary joint, so that the rotation function of the door 13 is ensured during the opening or closing process of the door 13, and the connectivity between the silencing unit 24 and the second pipeline 17 is maintained. When the door 13 is closed, the first conduit 16 is in communication 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 air suction pipe 38, the vacuum pump 3, the exhaust pipe 39, the second pipeline 17 and the silencing unit 24 communicated with the second pipeline in sequence, and finally is exhausted out of the box body 2 from the other end of the silencing unit 24. So as to avoid the influence of the smell of the food in other areas in the refrigerating chamber 10 caused by the direct discharge of the gas pumped out from the low-pressure storage unit into the refrigerator 1 and the influence of the fresh-keeping effect of the food.
In this embodiment, the second pipeline 17 is disposed in the foaming layer of the refrigerator door 13, extends toward the rotating sleeve 15 in the foaming layer, and finally passes through the rotating sleeve 15 or the connecting sleeve 73 located at the inner ring to communicate with the sound deadening unit 24 communicating with the atmosphere outside the refrigerator 1. In this embodiment, the first pipeline 16 and the second pipeline 17 are arranged to exhaust the gas at a distance from the vacuum pump 3, thereby effectively avoiding the condensation caused by the gas exhausted around the vacuum pump 3. In addition, first pipeline 16 and second pipeline 17 all locate the foaming layer, can utilize the heat insulating ability of foaming layer to make the gas temperature through in first pipeline 16 and the second pipeline 17 obtain certain promotion, lead to the condensation of gas outlet department when can avoiding giving vent to anger.
Specifically, in the present embodiment, the first pipeline 16 extends in a direction perpendicular to the door 13 when passing through the through hole 13 a. When the door 13 is closed, the first pipe 16 is communicated with the low-pressure storage chamber of the low-pressure storage unit; when the door 13 is opened, the first pipe 16 is separated from the low pressure storage unit, and the low pressure storage unit is sealed. As a practical way, a communicating valve is arranged on the low-pressure storage unit, when the box door 13 is closed, the communicating valve is opened under the triggering action of the first pipeline 16, and the first pipeline 16 is communicated with the interior of the low-pressure storage unit; when the door 13 is opened, the first pipe 16 is separated from the low pressure storage unit, the communication valve is closed, and the low pressure storage unit is sealed. The manner of communication is not limited to that described in the present embodiment.
As another practical way, the low pressure storage unit is connected to the door 13, and the first pipeline 16 is directly communicated with the low pressure storage unit; when the door 13 is opened, the door 13 drives the low-pressure storage unit arranged on the door to move out of the low-pressure storage chamber, and a user opens the low-pressure storage unit as required to place and take articles.
The rubber sleeve 9 is abutted against the accommodating part 18, the rubber sleeve 9 is provided with a main body part 91 for mounting the vacuum pump 3, and the main body part 91 is provided with a mounting cavity 92 which is consistent with the shape of the vacuum pump 3; the radial dimension of the mounting cavity 92 of the main body 91 is not larger than the radial dimension of the corresponding position of the vacuum pump 3, so that the rubber sleeve 9 is tightly attached to the vacuum pump 3 and the vibration on the vacuum pump 3 is absorbed.
The periphery of the main body 91 is provided with a plurality of protrusions 93 which are arranged in parallel along the central axis of the main body 91 and surround the main body 91, so as to improve the deformability of the rubber sleeve 9 and improve the vibration damping effect. In this embodiment, the shore hardness of the rubber sleeve 9 is 35 to 40.
The top of the door 13 of the refrigerator 1 is formed with an accommodating portion 18 having an open upper end 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 arranged at the edge of the opening end of the containing part 18, and a convex plate 31 matched with the groove 19 is arranged at the edge of the shielding cover 30; the convex plate 31 is arranged in the groove 19; the sealing compound is injected to sealingly connect the cover 30 to the receptacle 18. The arrangement seals the vacuum pump assembly in the accommodating part 18 at the top of the box door 13, so that the whole system is airtight, and the noise generated during the operation of the vacuum pump assembly is effectively prevented from being transmitted out by taking gas as a medium. In this embodiment, the accommodating portion 18 includes a first enclosing plate 47 and first end caps 48 at both ends of the first enclosing plate 47; the inner walls of two opposite first enclosing plates 47 of the accommodating part 18 are provided with second clamping blocks 41; the two opposite sides of the shielding cover 30 are provided with second hooks 32, and the second hooks 32 are matched with the second latch blocks 41 to fixedly connect the shielding cover 30 with the accommodating portion 18.
Both ends of the bottom of the accommodating part 18 are provided with limiting pieces 42, and the two limiting pieces 42 jointly define an installation gap 43 to accommodate the vacuum pump 3; the stoppers 42 abut on both ends of the vacuum pump 3 to limit the position of the vacuum pump 3. The inner wall of the first enclosing plate 47 of the accommodating part 18 is provided with a clamping protrusion 44, and the clamping protrusion 44 is matched with the rubber sleeve 9 to fix the vacuum pump 3. In this embodiment, the locking protrusion 44 abuts against the main body 91 of the rubber sleeve 9, that is, the locking protrusion 44 is located between two adjacent protrusions 93 on the rubber sleeve 9. The above arrangement of the limiting member 42 and the locking protrusion 44 in the accommodating portion 18 can effectively fix the vacuum pump assembly, and is convenient to install.
In this embodiment, the outer diameter of the rubber sleeve 9 (the protrusion 93) is not smaller than the corresponding position of the accommodating portion 18, so that when the rubber sleeve 9 is installed inside the accommodating portion 18, the rubber sleeve 9 contacts with the inner wall of the accommodating portion 18 and can interact with the inner wall of the accommodating portion 18 to generate a friction force, thereby ensuring firm installation.
As shown in fig. 15, and referring to fig. 7-9, the bottom of the receptacle 18 is provided with a first tab 45 extending toward the open end thereof; the first joint 45 is connected to the exhaust pipe 39 of the vacuum pump 3. A cover shell 33 is sleeved outside one end of the accommodating part 18 close to the first joint 45; the outer wall surface of the accommodating part 18 is provided with a first clamping block 46, the housing 33 is provided with a clamping hole 34 matched with the first clamping block 46, and the accommodating part 18 is fixedly connected with the housing 33 through the matching of the first clamping block 46 and the clamping hole 34. In this embodiment, the first joint 45 is provided at one end of the accommodating portion 18, and the housing 33 includes a second enclosing plate 35 covering the outside of the first enclosing plate 47 and a second end cap 36 covering the outside of the first end cap 48 on the side of the first joint 45. The first latch 46 is disposed on a first enclosing plate 47 of the accommodating portion 18 and a first end cover 48 close to the first joint 45; the locking hole 34 is formed in the second enclosing plate 35 and the second end cap 36 of the housing 33 to enhance the connection strength between the housing 33 and the accommodating portion 18 and improve the mounting stability.
The housing 33 is provided with a second joint 37, and the second joint 37 is provided with a second pipeline 17. The second tab 37 communicates with the first tab 45 on the first collar 47 of the receptacle 18; i.e., the second joint 37 communicates with the exhaust pipe 39. The second joint 37 comprises a guide post 37a at an end far away from the housing 33, and the guide post 37a is in an inverted cone shape so as to facilitate the installation of the second pipeline 17; a baffle 37b is arranged at the position of the second joint 37, which is close to the housing 33, and a concave ring 37c is arranged between the baffle 37b and the guide post 37a, so that the second pipeline 17 is effectively prevented from falling off; the second line 17 is mounted on the second connector 37 by means of a guide 37a and is stopped by a stop 37 b. The expansion degree of the second pipeline 17 at the concave ring 37c is smaller than that of the second pipeline 17 at the guide post 37a, so that the second pipeline 17 can be effectively prevented from falling off. Wherein the inner diameter of the second pipeline 17 is marked as D1The outer diameter of the guide post 37a near the end of the concave ring 37c is D2(ii) a Wherein D is1＜D2。
The box door 13 is closed, the first pipeline 16 is communicated with the low-pressure storage unit, and when the vacuum pump 3 works, air in the low-pressure storage unit sequentially passes through the first pipeline 16, the air suction pipe 38, the vacuum pump 3, the exhaust pipe 39, the second pipeline 17 and the silencing unit 24, and is finally exhausted out of the box body 2 through the silencing unit 24. So as to avoid the gas pumped out from the low-pressure storage unit being directly discharged into the refrigerator 1 to cause the food in other areas in the refrigerating chamber 10 to be tainted with each other and influence the fresh-keeping effect of the food; on the other hand, the vacuum pump is arranged on the refrigerator door, so that the vibration can be effectively avoided from being transmitted to the refrigerator body, the noise is reduced, the overall performance of the refrigerator is optimized, and the user experience is improved.
Specifically, referring to fig. 17 to 20, the silencing unit 24 includes a second silencing element 26 and a first silencing element 25 disposed on the box bottom 81 of the door hinge box 8, and the second silencing element 26 is engaged with the first silencing element 25. The first silencing piece 25 comprises a first end plate 25a, a second end plate 25b and a side plate 25c, wherein the first end plate 25a and the second end plate 25b are respectively arranged at two opposite ends of the first silencing piece; the first end plate 25a, the second end plate 25b and the side plate 25c are matched with the box bottom 81 to surround a silencing cavity with an opening at the opposite end of the box bottom 81; the second sound-deadening member 26 covers the open end of the first sound-deadening member 25 to define a sound-deadening chamber 27. The first end plate 25a of the silencing unit 24 is provided with a first connecting pipe 251 communicated with the silencing chamber 27, the second end plate 25b is provided with a first connecting hole 252 communicated with the silencing chamber 27, and the door hinge box 8 is provided with a second connecting hole 85 to realize the communication between the silencing unit 24 and the external atmosphere environment of the refrigerator. In the present embodiment, the second communication hole 85 is provided in a region of the case side plate 82 corresponding to the second end plate 25 b. The muffler unit 24 is connected to the second pipe 17 through the first connection pipe 251, and is connected to the atmosphere outside the refrigerator through the first and second communication holes 252 and 85.
A plurality of first baffle plates 25d arranged at intervals are arranged in the sound attenuation cavity of the first sound attenuation piece 25, and the first baffle plates 25d extend from the box bottom 81 of the door hinge box 8 far away from the opening end of the first sound attenuation piece 25 to the opening end of the first sound attenuation piece. The open end of the first silencing part 25 is formed with a mounting stand 253 for mounting the second silencing part 26. The first baffle 25d is integrally formed with the side plate 25c and the box bottom 81 of the door hinge box 8, and the end parts corresponding to the side plate 25c are connected with the side plate 25 c; in this embodiment, the first end plate 25a, the second end plate 25b and the side plate 25c of the first silencing piece 25 are rectangular, and the side plate 25c is arranged around two corresponding sides of the first end plate 25a and the second end plate 25 b; the shape of the first baffle 25d conforms to the shape of the first end plate 25a of the first muffler component 25.
The second muffler 26 includes a base plate 26a mounted on the mounting table 253 of the first muffler 25; the base 26a conforms to the shape of the open end of the first silencing piece 25; that is, in the present embodiment, the base plate 26a of the second silencing member 26 has a rectangular shape. The first end plate 25a, the second end plate 25b, the side plate 25c, the base plate 26a and the box bottom 81 of the door hinge box 8 form a sound deadening chamber wall to define the sound deadening stator 27 together.
The substrate 26a is provided with a plurality of second baffles 26b arranged at intervals, and the shape of the second baffles 26b is consistent with that of the first baffles 25 d. In the sound-deadening chamber 27 of the sound-deadening unit 24, the first baffle 25d and the second baffle 26b are provided alternately; and the first baffle 25d and the second baffle 26b divide the sound-deadening chamber 27 into a plurality of unit cavities 28.
The end of the first baffle 25d near the open end of the first sound deadening member 25 and the base plate 26a of the second sound deadening member 26 together define a first microchannel 254 for communicating the unit chambers 28 adjacent thereto on both sides thereof; the end of the second baffle 26b remote from the base plate 26a and the side plate 25c of the first muffler component 25 remote from the open end thereof together define a second microchannel 261 for communicating the cell cavities 28 adjacent thereto on both sides thereof.
In this embodiment, the other side end of the second baffle 26b is tightly attached to the side plate 25c of the first silencing part 25 and the box bottom 81 of the door hinge box 8, so that the airflow between two adjacent unit cavities 28 can only pass through the second micro-channel 261 from the unit cavity 28 on one side of the second baffle 26b to the unit cavity 28 on the other side.
Under the above structure configuration, the first micro-channel 254 and the second micro-channel 261 are disposed on two opposite sides of the central axis of the muffling chamber 27 to form a micro-channel between two adjacent unit cavities 28; that is, the unit cavities 28 and the micro channels are alternately arranged in the sound-deadening chamber 27, and a labyrinth-type air flow channel is formed in the sound-deadening chamber 27 so that the air flow alternately flows through the unit cavities 28 and the micro channels; in the process that the airflow passes through the silencing chamber 27, because the channel section of the micro-channel is far smaller than that of the unit cavity 28, the micro-channel throttles the air to block the movement of the air, and in the throttling process, the energy carried by the air rubs with the wall of the silencing unit and is converted into heat energy, so that the noise reduction is realized.
In this embodiment, the first end plate 25a or the second end plate 25b is close to the second baffle 26b, that is, the silencing chamber 27 is communicated with the unit cavities 28 at the two ends to form a second micro-channel 261; the flow pattern of the air flow will be described by taking this example.
It should be noted that the first baffle 25d or the second baffle 26b may be provided near the first end plate 25a or the second end plate 25b, which is not limited to the above description, and is specifically limited only for the description.
After entering the muffling chamber 27 through the first connecting pipe 251, the gas flow passes through the unit cavity 28, the second microchannel 261, the unit cavity 28, the first microchannel 254, and the unit cavity 28 … … in this order and finally flows out of the first connecting hole 252. That is, when the gas enters the muffling chamber 27, the gas fills the first unit chamber 28, flows into the next unit chamber 28 through the reserved microchannel (one of the first microchannel 254 and the second microchannel 261), and then continues to flow forward through the next microchannel (the other of the first microchannel 254 and the second microchannel 261). Because the channel section of the micro-channel is far smaller than the unit cavity 28, the micro-channel throttles the gas and blocks the movement of the gas, and in the throttling process, the energy carried by the gas rubs with the wall of the silencing unit and is converted into heat energy, so that the noise reduction is realized.
The outer wall of the sound-absorbing unit 24 may be provided with a sound-absorbing layer to absorb vibration and reduce noise.
In this embodiment, a second connection pipe communicating with the sound-deadening chamber 27 may be provided on the second end plate 25b at an end of the sound-deadening unit opposite to the first connection pipe 251, and the second connection pipe passes through the door hinge box 8 to communicate with the atmosphere outside the refrigerator.
In this embodiment, the labyrinth air flow passage is arranged to alternately change the air flow passage between the unit cavity 28 and the micro-channel, so as to repeatedly throttle, increase the friction between the energy carried by the air and the wall of the silencing unit, thereby improving the efficiency of converting the energy carried by the air into heat energy and efficiently reducing the noise.
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 (10)

1. The refrigerator is characterized in that: it includes:
a cabinet defining an insulated low temperature storage compartment;
the door hinge assembly is arranged at the top of the box body and comprises a door hinge plate and a door hinge box covered outside the door hinge plate;
a door rotatably coupled to the door hinge to open or close the low-temperature storage compartment;
a low-pressure storage unit, wherein air can be pumped to form air pressure lower than the external atmospheric pressure of the refrigerator so as to keep food fresh;
the vacuum pump is arranged at the top of the box door; the low-pressure storage unit is provided with an exhaust pipe and an exhaust pipe communicated with the low-pressure storage unit;
the silencing unit is arranged on the door hinge box; the noise reduction unit includes:
a sound-deadening chamber wall defining a sound-deadening chamber; one end of the silencing chamber is communicated with the exhaust pipe, and the other end of the silencing chamber is communicated with the atmosphere outside the box body;
one end of the first baffle and the wall of the sound attenuation cavity jointly define a first micro-channel;
the second baffles and the first baffles are distributed at intervals along the central axis direction of the silencing chamber to divide the silencing chamber into a plurality of unit cavities; one end of the second baffle, which is far away from the first microchannel, and the wall of the silencing cavity jointly define a second microchannel;
wherein the first microchannel and the second microchannel are respectively communicated with the unit cavities adjacent to the first microchannel and the second microchannel on two sides.
2. The refrigerator according to claim 1, wherein: the silencing unit comprises a first silencing piece arranged on the door hinge box and a second silencing piece matched with the first silencing piece;
the first silencing piece comprises a first end plate and a second end plate which are respectively arranged at two opposite ends of the first silencing piece, and a side plate which is connected with the first end plate and the second end plate; the box bottoms of the first end plate, the second end plate, the side plate and the door hinge box are surrounded with a silencing cavity with an opening;
the second sound attenuating element includes a base plate covering the open end of the first sound attenuating element to define the sound attenuating chamber in cooperation with the first sound attenuating element.
3. The refrigerator according to claim 2, wherein:
the first baffles are arranged in the silencing cavities of the first silencing parts, and the end parts, close to the opening ends of the first silencing parts, of the first baffles and the base plate on the second silencing part define the first micro-channel;
the second baffles are arranged on the substrate of the second silencing piece, and the end part of the second baffles, far away from the substrate, and the side plate, far away from the opening end of the first silencing piece, of the first silencing piece jointly define the second microchannel.
4. The refrigerator according to claim 2, wherein: an installation platform is formed at the opening end of the first silencing piece; the base plate of the second silencing piece is installed on the installation table.
5. The refrigerator according to any one of claims 1 to 4, wherein: the two end parts of the silencing unit are respectively provided with a first connecting pipe and a first connecting through hole which are communicated with the unit cavity; the first connecting pipe is communicated with the exhaust pipe through a second pipeline; and the door hinge box is provided with a second communication hole communicated with the atmospheric environment outside the box body, and the second communication hole is communicated with the first communication hole.
6. The refrigerator according to claim 5, wherein: the door hinge plate is provided with a first connecting piece; the box door is provided with a second connecting piece which is rotationally connected with the first connecting piece; the box door rotates around the rotating shaft of the second connecting piece; at least one of the first connecting piece and the second connecting piece is provided with a pipeline channel;
the second pipeline passes through the pipeline channel; the second pipeline is communicated with the first connecting pipe through a hose or a rotary joint;
when the vacuum pump works, air in the low-pressure storage unit sequentially passes through the air suction pipe, the vacuum pump, the exhaust pipe and the silencing unit, and is finally discharged out of the box body through the silencing unit.
7. The refrigerator according to claim 6, wherein: a foaming layer is arranged in the box door, and the second pipeline is arranged in the foaming layer.
8. The refrigerator according to claim 5, wherein: the top of the box door is provided with an accommodating part for installing the vacuum pump; the bottom of the accommodating part is provided with a first joint extending to the opening end of the accommodating part; the first joint is communicated with an exhaust pipe of the vacuum pump.
9. The refrigerator according to claim 8, wherein: a housing is sleeved outside one end of the accommodating part close to the first joint; a first clamping block is arranged on the outer wall surface of the accommodating part, a clamping hole matched with the first clamping block is formed in the housing, and the accommodating part is fixedly connected with the housing through the matching of the first clamping block and the clamping hole; and a second joint is arranged on the housing, one end of the second joint is communicated with the first joint on the accommodating part, and the other end of the second joint is communicated with the second pipeline.
10. The refrigerator according to claim 9, wherein: the second joint comprises a guide column which is far away from one end of the housing and is in an inverted cone shape; one end of the second joint close to the housing is provided with a baffle for stopping the second pipeline; and a concave ring is arranged between the baffle and the guide post.
CN202010619937.2A 2020-07-01 2020-07-01 Refrigerator with a door Pending CN111765694A (en)

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CN111197899A (en) * 2020-03-09 2020-05-26 海信（山东）冰箱有限公司 A kind of refrigerator

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US20070045044A1 (en) * 2005-08-26 2007-03-01 Sullivan John T Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
CN101506602A (en) * 2006-08-18 2009-08-12 Bsh博世和西门子家用器具有限公司 Electrical refrigerator with vacuum preserving system and corresponding control method
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Application publication date: 20201013