WO2021114958A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2021114958A1
WO2021114958A1 PCT/CN2020/126295 CN2020126295W WO2021114958A1 WO 2021114958 A1 WO2021114958 A1 WO 2021114958A1 CN 2020126295 W CN2020126295 W CN 2020126295W WO 2021114958 A1 WO2021114958 A1 WO 2021114958A1
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WO
WIPO (PCT)
Prior art keywords
low
storage unit
pressure storage
air
pressure
Prior art date
Application number
PCT/CN2020/126295
Other languages
English (en)
French (fr)
Inventor
张秋菊
李利云
张树栋
申乃雨
许锦潮
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
Priority claimed from CN201911329075.3A external-priority patent/CN112984905A/zh
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 WO2021114958A1 publication Critical patent/WO2021114958A1/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
    • 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
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove

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 share of the market. With the improvement of consumers’ requirements for the quality of fresh foods, the requirements for refrigerators are also getting higher and higher.
  • the refrigerators are required to have higher configuration and more powerful functions. In particular, it is hoped that the stored fresh foods can have more The long storage period ensures the freshness of the ingredients and prevents the loss of nutrients.
  • a vacuum chamber In order to better store food, a vacuum chamber has been developed in the refrigerator, and the vacuum chamber is evacuated by a vacuum device to deoxygenate the vacuum chamber to prevent food deterioration and prolong the storage time of food.
  • the low temperature environment can reduce the activity of microorganisms and help improve the preservation effect.
  • the area in the refrigerator and the vacuum chamber in the same space is at the same temperature environment. Although this temperature can meet the general fresh-keeping and refrigeration requirements, it will reduce the fresh-keeping effect of the vacuum chamber.
  • the embodiment of the present disclosure provides a refrigerator, including:
  • Box body which defines a thermally insulated storage room
  • a low-pressure storage unit housed in the storage room, can be evacuated to form an air pressure lower than the atmospheric pressure outside the box;
  • the main air duct is formed in the box body
  • the first air duct communicates with the main air duct and is located adjacent to the periphery of the low-pressure storage unit; the front end of the first air duct is provided with an air outlet to guide the cold air to the The front end of the low-pressure storage unit.
  • Fig. 1 is a schematic diagram of the overall structure of a refrigerator according to some embodiments of the present disclosure
  • FIG. 2 is an exploded schematic diagram of a low-pressure storage unit of a refrigerator according to some embodiments of the present disclosure
  • Figure 3 is a perspective view of a housing of a refrigerator according to some embodiments of the present disclosure.
  • Figure 4 is a perspective view from another angle of the housing of the refrigerator according to some embodiments of the present disclosure.
  • Figure 5 is an exploded schematic view of a door of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 6 is a schematic structural diagram of the low-pressure storage unit when the door and the housing of the refrigerator are in the closed position but not locked according to some embodiments of the present disclosure
  • Fig. 7 is a schematic partial cross-sectional view of the low-pressure storage unit when the door and the housing of the refrigerator are in the closed position but not locked according to some embodiments of the present disclosure
  • FIG. 8 is a schematic partial cross-sectional view of another position of the low-pressure storage unit when the door and the casing of the refrigerator are in the closed position but not locked according to some embodiments of the present disclosure
  • FIG. 9 is a schematic structural diagram of the low-pressure storage unit when the door and the housing of the refrigerator are locked according to some embodiments of the present disclosure
  • FIG. 10 is a schematic partial cross-sectional view of the low-pressure storage unit when the door and the housing of the refrigerator are locked according to some embodiments of the present disclosure
  • FIG. 11 is a schematic structural diagram of the low-pressure storage unit when the door and the casing of the refrigerator are unlocked and in a separated state according to some embodiments of the present disclosure
  • FIG. 12 is a schematic structural diagram of the relative positions of the air extraction device, the low-pressure storage unit, and the drain pipe of the refrigerator according to some embodiments of the present disclosure
  • FIG. 13 is a relative position structure of another angle of the air extraction device, the low-pressure storage unit, and the drain pipe of the refrigerator according to some embodiments of the present disclosure
  • FIG. 14 is a schematic structural diagram of the relative positions of the drain pipe and the inner container of the refrigerator according to some embodiments of the present disclosure
  • FIG. 15 is a schematic diagram of the overall structure of an air extraction device of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 16 is a schematic structural diagram of an elastic body of a refrigerator according to some embodiments of the present disclosure.
  • Figure 17 is an exploded schematic view of an air extraction device of a refrigerator according to some embodiments of the present disclosure.
  • Figure 18 is a cross-sectional view of an air extraction device of a refrigerator according to some embodiments of the present disclosure.
  • Figure 19 is a perspective view of a housing of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 20 is a schematic diagram of an enlarged structure of area A in FIG. 19;
  • 21 is a structural schematic diagram of the relative position of the inner liner and the housing of the refrigerator according to some embodiments of the present disclosure
  • FIG. 22 is a schematic diagram of an enlarged structure of area B in FIG. 21;
  • Figure 23 is a cross-sectional view of the refrigerating compartment of the refrigerator of the present disclosure.
  • FIG. 24 is a schematic diagram of an enlarged structure of area C in FIG. 23;
  • Figure 25 is a perspective view of a refrigerator compartment of a refrigerator according to some embodiments of the present disclosure.
  • FIG. 26 is a schematic diagram of an enlarged structure of area D in FIG. 25;
  • FIG. 27 is an exploded perspective view of a pressure detection unit of a low-pressure storage unit of a refrigerator according to some embodiments of the present disclosure
  • FIG. 28 is a schematic diagram of an enlarged structure of area E in FIG. 27;
  • Figure 29 is a partial cross-sectional view of a schematic diagram of a low-pressure storage unit of a refrigerator according to some embodiments of the present disclosure.
  • FIGs 1 to 11 are schematic diagrams of the locking mechanism of the low-pressure storage unit of the refrigerator; please refer to Figures 1 to 11, a refrigerator 1, the refrigerator 1 includes a heat-insulating box 2, and the box 2 includes a shell 2a and an inner liner 2b and a thermal insulation layer (not shown) located between the two.
  • the box 2 defines a plurality of insulated storage rooms to store food and other items.
  • these storage rooms are respectively the refrigerating compartment 12 at the upper part and the freezing compartment at the bottom.
  • the storage rooms can be closed by their corresponding doors.
  • the refrigerating chamber 12 is provided with a refrigerating side door
  • the freezing chamber is provided with a freezing side door.
  • present disclosure should not be limited to the specific distribution form of the storage compartments of the refrigerator 1, and the present disclosure may also be applied to other forms of refrigerators 1, such as refrigerators 1 with drawer-type doors.
  • the refrigerator 1 has an evaporative refrigeration system forming a closed loop.
  • the refrigeration system includes at least a compressor (not shown), a condenser (not shown), a throttling device (not shown), and an evaporator (not shown). Since such a refrigeration system is a well-known technology in the prior art, further description thereof is omitted. Of course, the refrigerator 1 can also use other forms of refrigeration systems (such as absorption refrigeration systems, thermoelectric refrigeration systems).
  • the refrigerator 1 is provided with a low-pressure storage unit 15 that can be maintained in a low-pressure state, and an air extraction device for extracting gas from the low-pressure storage unit 15.
  • the air extraction device may include a vacuum pump 22 and a pipeline connected between the vacuum pump 22 and the low-pressure storage unit 15.
  • the refrigerator 1 is provided with a control unit that controls the air extraction device to vacuum the low-pressure storage unit 15 to realize automatic control of vacuuming the low-pressure storage unit 15.
  • the low-pressure storage unit 15 is provided in the refrigerating compartment 12. It should be understood that in other embodiments, the low-pressure storage unit 15 may also be arranged in other storage rooms, for example, a temperature changing room whose temperature range can be switched between a refrigerating temperature zone and a freezing temperature zone.
  • the low-pressure storage unit 15 is located at the bottom of the refrigerating compartment 12 and is supported on the bottom wall of the refrigerating compartment 12.
  • An adjacent position of the low-pressure storage unit 15 may be provided with a fresh-keeping container 44 suitable for storing vegetables and other foods with high humidity; the low-pressure storage unit 15 and the fresh-keeping container 44 are arranged side by side at the bottom of the refrigerating compartment 12.
  • the low-pressure storage unit 15 may be constructed independently of the box body 2 and then assembled in the box body 2. Please refer to Figures 2 to 4, in this embodiment, the low-pressure storage unit 15 has a substantially flat rectangular parallelepiped shape, and the sum of the width of the low-pressure storage unit 15 and the width of the fresh-keeping container 44 is slightly smaller than the width of the refrigerating compartment 12, which is effective The bottom space of the refrigerating compartment 12 is allocated so that the fresh-keeping container 44 and the low-pressure storage unit 15 can be inserted into or pulled out of the refrigerating compartment 12.
  • the low-pressure storage unit 15 includes a casing 4 fixed in the refrigerating compartment 12 and a door 5 connected to the casing 4 and capable of being pushed into or out of the refrigerating compartment 12.
  • the housing 4 has a box-shaped structure, which defines a flat low-pressure storage chamber 14 with a food access port 14a.
  • the access port 14a is located at the front end of the housing 4 facing the user.
  • the outer side of the box wall of the shell 4 is provided with a grid-like reinforcing rib 40 to increase the strength of the box wall of the shell 4 and prevent the shell 4 from being deformed due to the pressure difference between the inside and outside after being evacuated.
  • the housing 4 includes an upper housing 41 and a lower housing 42 connected to form the low-pressure storage chamber 14.
  • the upper housing 41 and the lower housing 42 are integrated by ultrasonic welding; specifically, the lower housing 42 includes a bottom wall 42a and The first lower side wall 42c, the lower rear wall 42b, the second lower side wall 42d connected to the edge of the bottom wall 42a, and the front end wall 42e that is located at the front end of the lower housing 42 and is formed with the access port 14a;
  • the bottom wall 42a of the lower casing is the bottom wall of the low-pressure storage unit 15.
  • the front end wall 42e may have a flat butting surface 43 that is substantially perpendicular to the horizontal plane and used for butting with the door body 5.
  • the upper casing 41 includes a top wall 41a, an upper rear wall 41b, a first upper side wall 41c, and a second upper side wall 41d which are sequentially connected to the edge of the top wall 41a; the first upper side wall 41c of the upper casing 41 and The distance between the lower wall surface of the second upper side wall 41d and the top wall 41a linearly decreases from back to front, and decreases to 0 at the front edge of the top wall 41a. That is, the projections of the first upper side wall 41c and the second upper side wall 41d on a plane perpendicular to the top surface are triangular.
  • the upper rear wall 41b is matched with the lower rear wall 42b
  • the first lower side wall 42c is matched with the first upper side wall 41c
  • the second lower side wall 42d is matched with the second upper side wall 41d
  • the front end part is matched with the front end wall 42e of the lower casing 42 and the above opposite positions are welded and fixed by ultrasonic welding, so that the upper casing 41 and the lower casing 42 are fixedly connected to form the low-pressure storage chamber 14.
  • the above ultrasonic welding effectively improves the connection strength between the upper casing 41 and the lower casing 42 and ensures the airtightness of the whole casing 4.
  • the access opening 14a of the casing 4 is formed on the front end wall 42e of the lower casing 42, so that the access opening 14a of the casing 4 is integrated, and the air tightness of the casing 4 is effectively ensured.
  • the distance between the lower wall surface of the first upper side wall 41c and the second upper side wall 41d and the top wall 41a decreases linearly from back to front, and decreases to 0 at the front edge of the top wall 41a. Therefore, the number of mating surfaces of the upper shell 41 and the lower shell 42 is reduced, and the overall airtightness of the shell 4 is improved, especially the airtightness of the shell 4 at the access port 14a.
  • the housing 4 is configured as a separate structure of the upper housing 41 and the lower housing 42, which facilitates the processing of the grid-shaped reinforcing ribs 40.
  • the door body 5 can be provided with a ring-shaped sealing element 16 to form an airtight joint between the housing 4 and the door body 5 when the door body 5 is in the closed position, and prevent gas from flowing from the joint between the housing 4 and the door body 5. Enter the low-pressure storage room 14.
  • the sealing element 16 may also be arranged at the front end of the housing 4, for example connected to the front end wall 42e.
  • the low-pressure storage chamber 14 When the low-pressure storage chamber 14 is closed by the door 5 and the air extraction device is activated, the gas in the low-pressure storage chamber 14 is drawn away, and the low-pressure storage chamber 14 is in a low-pressure state.
  • the pressure in the low-pressure storage chamber 14 is between a standard atmospheric pressure and an absolute vacuum. Since the air pressure in the low-pressure storage chamber 14 is lower than the standard atmospheric pressure, those skilled in the art also commonly call it a "vacuum chamber".
  • the door body 5 is a drawer type door, and the door body 5 can be pushed toward the housing 4 to close the access opening 14a of the low-pressure storage compartment 14 or pulled out to open the low-pressure storage compartment 14.
  • a tray-shaped storage container 54 is connected to the rear side of the door body 5 for storing articles. The user obtains the articles located in the low-pressure storage unit 15 or stores the articles in the low-pressure storage unit 15 by pushing or pulling the storage container 54 into or out of the low-pressure storage room 14.
  • the door body 5 and the storage container 54 together constitute a drawer unit that can be pushed into and pulled out of the housing 4.
  • a retractable guide rail unit 17 can be arranged between the storage container 54 and the casing 4 so that the door 5 and the storage container 54 can be smoothly pulled out of the casing 4 or pushed into the casing 4.
  • the low-pressure storage unit 15 includes a pair of locking mechanisms for locking the door body 5 and the housing 4 in the closed position.
  • each locking mechanism includes a first mating portion 6 provided on the housing 4 and rotatably provided at both ends of the door body 5 around the rotation axis X for contacting the corresponding side A mating part 6 cooperates with a second mating part 7 that realizes the locking and unlocking of the door body 5.
  • the second mating portion 7 and the first mating portion 6 the door body 5 is locked in the closed position, and the sealing element 16 between the housing 4 and the door body 5 is squeezed by the locking force generated by the locking mechanism. It is fully deformed, and the airtightness between the door body 5 and the housing 4 is improved.
  • the first lower side wall 42c and the second lower side wall 42d of the housing 4 near the access port 14a are provided with a lock accommodating portion 61 and a first matching portion 6 located in the lock accommodating portion 61; the housing 4
  • the second enclosure 60b The first enclosure 60a and the second enclosure 60b are connected to form a lock receiving portion 61.
  • the lock accommodating portion 61 is formed with a passage opening 64 at the foremost end of the housing 4, and the passage opening 64 is used for inserting or extracting the second mating portion 7.
  • the end surfaces of the first enclosure panel 60a and the second enclosure panel 60b away from the box wall of the housing 4 and the end surface of the reinforcing rib 40 away from the box wall of the housing 4 are the same.
  • the end surface of the first mating portion 6 away from the box wall of the housing 4 and the end surface of the reinforcing rib 40 away from the box wall of the housing 4 are the same.
  • the first mating portion 6 includes a locking portion 62; in the lock accommodating portion 61, the locking portion 62 is fixed on the first enclosure 60a; the locking portion 62 includes a locking wall 62a perpendicular to the first enclosure 60a and a guide wall arranged obliquely 62b; one end of the guide wall 62b is connected to the end of the locking wall 62a away from the first enclosure 60a, and the other end is connected to the end of the first enclosure 60a close to the access opening 14a.
  • the upper part of the lock accommodating portion 61 on at least one side of the housing 4 is provided with a position detection device that is electrically connected to the air extraction device and is used to cooperate with the second matching portion 7 to detect the locked and unlocked state of the door body 5.
  • the position detection device includes a travel switch 63 fixedly mounted on the housing, a travel push rod 63a slidably connected to the housing; the travel switch 63 has a trigger part; one end of the travel push rod 63a is matched with the trigger part, and the other end is connected with the The two mating parts 7 cooperate; when the second mating part 7 slides along the locking wall 62a, the stroke push rod 63a is pushed to move, thereby triggering the stroke switch 63.
  • the first enclosure 60a is provided with openings 65 that are separated from the guide wall 62b on both sides of the locking wall 62a; the openings 65 are arranged adjacent to the locking wall 62a.
  • the stroke push rod 63a of the stroke switch 63 extends into the lock accommodating portion 61 through the opening 65, and is located adjacent to the locking wall 62a.
  • a decorative cover 8 is connected to the door body 5.
  • Two opposite ends of the door body 5 are provided with connecting pieces 83, and the second matching portion 7 is rotatably arranged on the connecting pieces 83.
  • the second matching portion 7 rotates around its rotation axis X and drives the handle 81 fixed thereto to rotate.
  • Two ends of the handle 81 are respectively fixed with a second matching portion 7.
  • the second mating portion 7 is fixed to the corresponding end of the handle 81, it is fixed on the handle 81 so as not to move relative to the handle 81 by a fixing device such as a screw, so that when the handle 81 rotates and moves, the second The fitting portion 7 also rotates around the rotation axis X.
  • the second mating portion 7 includes a locking plate, which can rotate around the rotation axis X, the axis of the rotation axis X is arranged in the horizontal direction and has a set distance from the handle 81, and the locking plate faces the side of the housing 4
  • One side of the wall is provided with a protrusion 72.
  • the locking plate is in the shape of a flat plate, which includes a first slat 71a, a second slat 71b, and a third slat 71c that are connected end to end in sequence.
  • the connection between the first slat 71a and the second slat 71b extends to form a connection with the first plate.
  • the strip 71a is located on the same side of the third strip 71c and has an acute angle between the fourth strip 71d and the first strip 71a.
  • the middle position of the second slat 71b is rotatably fixed on the connecting piece 83 at the end of the door body 5; the bump 72 is provided at the connection between the second slat 71b and the third slat 71c.
  • the end of the fourth slat 71d away from the third slat 71c is fixed to the corresponding end of the handle 81.
  • the front side of the door body 5 may be provided with an inflation passage 18 (as shown in FIG. 5) arranged on the door body 5 to communicate with the inner and outer sides of the low-pressure storage unit 15 (as shown in FIG. 5), and used to close or open the inflation passage 18's pressure relief device.
  • the pressure relief device includes a rod body 20 linked with the second matching portion 7, a rotating plate 59 fixedly connected to the rod body 20, and a pressure relief member 19 fixed on the rotating plate 59 for closing or opening the inflation channel 18.
  • the two ends of the rod body 20 are respectively fixed to the locking plate on the corresponding side, and the rod body 20 and the protrusion 72 are respectively located on both sides of the rotation axis X; the rotation axis of the rotation plate 59 coincides with the rotation axis X of the second matching part;
  • the matching part 7 rotates around the rotation axis X driven by the handle 81, it drives the rod body 20 and the rotating plate 59 to rotate coaxially, and the pressure relief member 19 closes the inflation channel 18.
  • both ends of the rod body 20 penetrate the decorative cover 8, and the first slat 71 a of the second matching portion 7 and the corresponding end of the rod body 20 are fixed in a relatively non-movable manner.
  • Both sides of the decorative cover 8 are provided with escape holes 39 that are consistent with the rotational movement track of the rod body 20, and there is a gap between the door body 5 and the decorative cover 8 for the rod body 20 to rotate.
  • the door body 5 has a receiving cavity 52 recessed rearward from its front surface 5 a for receiving at least a part of the pressure relief device.
  • the inflatable channel 18 is provided on the cavity wall of the receiving cavity 52 away from the decorative cover 8 and communicates with the low-pressure storage room 14 and the receiving cavity 52;
  • the receiving cavity 52 is provided with a convex column 53 with the rotation axis X as the central axis; one end of the rotating plate 59 It is fixed to the rod body 20 and the other end is rotatably fixed in the receiving cavity 52 around the protruding column 53;
  • the pressure relief member 19 is arranged inside the rotating plate 59; and the rotating plate 59 is arranged between the rotating plate 59 and the cavity wall of the receiving cavity 52 away from the decorative cover 8.
  • torsion springs separated from the pressure relief member 19 on opposite sides of the rotating plate 59.
  • the first matching portion 6 and the second matching portion 7 are locked, and the torsion spring presses the rotating plate 59 so that the pressure relief member 19 presses the inflation channel 18.
  • the rotating plate 59 is pressed inward and downward, and the rotating plate 59 drives the second matching portion 7 and the handle 81 to rotate inward and downward.
  • the torsion spring can limit the limit position of the handle 81 upward and forward rotation, which can prevent the handle 81 from continuing to rotate and cause the upper end of the handle 81 to face When the front surface 5a of the door body 5 approaches, the user's hand is squeezed by the handle 81 and the door body 5.
  • the end of the rotating plate 59 is provided with a fixed channel with a polygonal cross-section for mounting the rod 20.
  • the cross-sectional shape of the rod 20 is consistent with the cross-sectional shape of the fixed channel.
  • the polygonal configuration of the cross-section makes the rod 20 and the rotating plate 59 No relative rotational movement is allowed.
  • the handle 81 when the door body 5 is in the closed position but not yet locked, the handle 81 is in the first position.
  • the handle 81 rotates inwardly around the rotation axis X of the second mating part 7, while the handle 81 drives the second mating part 7 and the rod body 20 to rotate inwardly, and the second mating part 7
  • the protrusion 72 gradually approaches the side of the locking portion 62 away from the access port 14a, and at the same time gradually approaches the stroke push rod 63a of the stroke switch 63; the rod body 20 drives the rotating plate 59 to rotate inward, and the rotating plate 59 drives the pressure relief member 19 to gradually approach the inflation Channel 18.
  • the door body 5 and the housing 4 are in a locked state, and the handle 81 is in the second position at this time.
  • the handle 81 is rotated to the second position, the second mating part 7 rotates into the lock accommodating part 61, the protrusion 72 on the second mating part 7 moves to an adjacent position on the rear side of the locking wall 62a, and pushes the stroke push rod 63a moves up, triggers the travel switch 63, the travel switch 63 sends a control signal for closing the door to the control unit, and the control unit controls the air extraction device to start pumping air according to the control signal; at this time, the pressure relief member 19 is in close contact with the inflation channel 18 to seal The air-filling channel 18 is blocked, and the low-pressure storage chamber 14 forms a closed space.
  • the above arrangement of the first mating portion 6, the second mating portion 7, and the travel switch 63 electrically connected to the air extraction device can timely monitor the locking state of the door 5 and the housing 4, so that the door 5 and the housing 4 can be locked in a timely manner.
  • a vacuum signal is sent to the air extraction device in time to ensure the vacuum of the low-pressure storage unit 15 and ensure the freshness of the food.
  • the projection 72 moves down along the guide wall 62b, and drives the second matching part 7 to rotate downward about the rotation axis X; the projection 72 moves downward Gradually approach the connection between the guide wall 62b and the locking wall 62a, continue to push the door body 5 to move to the housing 4, the protrusion 72 moves to the adjacent position behind the locking wall 62a, and the door body 5 and the housing 4 are locked at the same time;
  • the pressure relief member 19 is in close contact with the inflation channel 18 to block the inflation channel 18.
  • the decorative cover 8 on the front side of the door body 5 is directly pushed to close the door without the handle 81, which is convenient and quick, and reduces the user's effort to place the force point on the door handle 81; at the same time, the guide Under the action of the wall 62b, the locking process is smooth and stable, avoiding collisions.
  • the door body 5 and the housing 4 are in a locked state.
  • the user can hold the lower end of the handle 81 and lift it upwards.
  • the handle 81 rotates around the rotation axis X and is fixed on the second connecting member 83.
  • the fitting part 7 rotates upward.
  • the rod body 20 rotates upwards and drives the rotating plate 59 to rotate upwards around the rotation axis X.
  • the pressure relief member 19 also releases the sealing of the inflation channel 18, and the external air enters the low-pressure storage chamber 14 through the inflation channel 18 to balance the internal and external pressures. . After that, the user can hold the handle 81 and pull it forward to open the door 5.
  • the second matching portion 7 and the first matching portion 6 are locked, the structure is compact, and the cooperation is stable.
  • the combination of the second mating portion 7 and the first mating portion 6 in the locked position provides a locking force between the door body 5 and the housing 4, so that the sealing element 16 is fully deformed, thereby improving the door body 5 and the housing 4 Air tightness between.
  • the inflation channel 18 When the handle 81 is in the position shown in FIGS. 9 and 10, the inflation channel 18 is tightly closed by the pressure relief member 19; when the handle 81 is in the position shown in FIGS. 6-8, the inflation channel 18 has been opened, External air can enter the low-pressure storage chamber 14 through the inflation channel 18 to release the low-pressure state of the low-pressure storage chamber 14.
  • the inflation channel 18 and the pressure relief member 19 may also be provided in isolation from the handle 81.
  • a button is provided on the door body 5. By pressing the button, the inflation channel 18 is opened, and then the user operates the handle 81 to open the door body 5.
  • the area of the door body 5 near its lower end surface 5b is recessed from its front surface 5a to form a receiving space 82 for accommodating the handle 81; in this embodiment, the lower end of the receiving space 82 extends to the lower end surface 5b of the door body 5, and there are two left and right sides. The end extends to the side end surface 5c of the door body 5.
  • the handle 81 is located in the accommodating space 82, and the front surface of the handle 81 is flush with the front surface 5a of the door body 5 on the upper part of the accommodating space 82, so as to reduce the occupied volume of the low-pressure storage unit 15 .
  • the handle 81 in the second position is completely accommodated in the accommodation space 82 of the door body 5 and does not exceed the front surface of the door body 5.
  • the handle 81 is in the first position, and the handle 81 moves out of the accommodating space 82 and is located on the front side of the front surface 5a of the door body 5; the handle 81 is in the first position It occurs when the user opens the low-pressure storage unit 15 and the door of the refrigerator 1 is opened at this time, which does not affect the arrangement of the internal space of the refrigerator 1 occupied by the low-pressure storage unit 15.
  • the handle 81 When the door of the refrigerator 1 is in the closed state and the door 5 of the low-pressure storage unit 15 is in the closed position but the handle 81 is in the second position (retracted position), the inner side of the door and the handle 81 are kept at a certain distance to avoid closing the door Damage to the low-pressure storage unit 15 is caused. Therefore, by arranging the handle 81 in the accommodating space 82, the distance between the low-pressure storage unit 15 and the inner side of the door of the refrigerator 1 can be reduced, thereby increasing the space utilization of the refrigerator 1.
  • the decorative cover 8 is connected to the door body 5 to shield the pressure relief device from the front of the door body 5. In this way, the rod body 20 is integrally located in the door body 5.
  • the handle 81 After being fixed to the door body 5, the handle 81 is rotatably connected to the door body 5. When the handle 81 is rotated, the second matching portion 7 rotates, and the rod body 20 and the rotating plate 59 both rotate around the rotation axis X.
  • the handle 81 can rotate around the rotation axis X between a first position and a second position.
  • the angle formed between the handle 81 and the housing space 82 of the door 5 close to the wall surface of the housing 4 is the largest, and the largest angle is formed between its lower end and the housing space 82 of the door 5 close to the wall surface of the housing 4 Distance, so the first position can also be called the extended position.
  • the angle formed between the handle 81 and the wall surface of the housing space 82 on the door 5 close to the housing 4 is the smallest, and the minimum distance is formed between its lower end and the wall surface of the housing space 82 close to the housing 4, so
  • the second position may also be referred to as the retracted position.
  • the second matching portion 7 linked with the handle 81 and the rod body 20 linked with the second matching portion 7 are also restricted to rotate between the first limit position and the second limit position, wherein, when the handle 81 is in the first position When the second matching portion 7 and the rod body 20 are in the first limit position (as shown in Figures 6 and 8), when the handle 81 is in the second position, the second matching portion 7 and the rod body 20 are both in the second limit position ( As shown in Figure 9).
  • Figs. 12-14 are schematic structural diagrams of the exhaust setting of the low-pressure storage unit of the refrigerator; as shown in Figs. 12-14, the ice box 1 has a drain pipe 21 for draining the condensed water inside the refrigerator 1. As shown in Figs. One end of the air suction device communicates with the low-pressure storage unit 15, and the other end communicates with the drain pipe 21 of the refrigerator 1. The air extraction device operates to extract the air in the low-pressure storage unit 15 and deliver it to the drain pipe 21, and finally discharge the air from the refrigerator 1 through the drain pipe 21. In order to prevent the gas extracted from the low-pressure storage unit 15 from being directly discharged into the refrigerator 1 to cause the food in other areas in the refrigerating compartment 12 to smell each other, which affects the freshness preservation effect of the food.
  • the air extraction device includes a vacuum pump 22, a first pipe 23 connecting the vacuum pump 22 and the low-pressure storage unit 15, and a second pipe 24 connecting the vacuum pump 22 and the drain pipe 21.
  • the vacuum pump 22 is arranged on the inner container 2 b of the refrigerating compartment 12 and is close to the bottom of the low-pressure storage unit 15.
  • a suction port connected to the first pipeline 23 is provided on the top of the low-pressure storage unit 15 near the rear end, and an exhaust port connected to the second pipeline 24 is provided on the drain pipe 21;
  • the vacuum pump 22 has a pump body, a suction pipe 22 a connected with the first pipe 23, and an exhaust pipe 22 b connected with the second pipe 24.
  • the suction pipe 22a of the vacuum pump 22 and the exhaust pipe 22b are arranged side by side, and are located at the same end of the vacuum pump 22; the first pipe 23 is fixed with the suction port on the low-pressure storage unit 15 and then bent and turned to follow the top of the rear end of the low-pressure storage unit 15 It extends at the edge, and then bends at the first turning position A1 by 90 degrees and turns to the rear wall of the inner liner 2b, and extends parallel to the top wall 41a of the low-pressure storage unit 15 to the second turning position B1; turns to 90 again at the second turning position B1 The angle extends downward to the third steering position C1; at the third steering position C1, it turns again to communicate with the suction pipe 22a; where, on the projection of the plane where the bottom wall 42a of the storage unit is located, the second steering position B1 and the third steering position
  • the projection of the second steering position B1 coincides with the projection of the third steering position C1.
  • the second pipeline 24 communicates with the exhaust pipe 22b of the vacuum pump 22 and passes through the inner liner 2b to communicate with the exhaust port on the drain pipe 21.
  • the multiple turning arrangements of the first pipeline 23 above make the path of the pipeline tidy, and reduce the space occupied by the pipeline perpendicular to the rear wall of the inner liner 2b, so as to increase the available space of the low-pressure storage unit 15.
  • the present disclosure should not be limited to the above-described steering mode of the first exhaust pipe 22a, and other steering modes may also be applied to the present disclosure to reduce the space occupied by the pipeline.
  • FIGS 15-18 are schematic views of the structure of the air extraction device of the refrigerator; as shown in Figures 15-18, the air extraction device includes a pump casing 27 and an elastic body 28 sheathed between the pump body and the pump casing 27.
  • the pump housing 27 is provided with a connecting plate 27a fixed to the rear wall of the inner liner 2b; in this embodiment, the connecting plate 27a is provided with screw holes, and the pump housing 27 is fixedly connected to the rear wall of the inner liner 2b by screws.
  • the elastic body 28 has a main body 74 on which the vacuum pump 22 is installed.
  • the main body 74 is provided with a mounting cavity 74a that conforms to the shape of the vacuum pump 22; the radial dimension of the mounting cavity 74a of the main body 74 is smaller than the radial dimension of the corresponding position of the vacuum pump 22.
  • the elastic body 28 is close to the vacuum pump 22 to absorb vibration on the vacuum pump 22 in a timely manner.
  • a positioning block 22c is provided on the end of the vacuum pump 22 opposite to the suction pipe 22a and the exhaust pipe 22b; one end of the installation cavity 74a of the main body 74 is provided with a perforation 75 through which the suction pipe 22a and the exhaust pipe 22b pass, and the other end An end cover 76 matched with the end of the vacuum pump 22 is provided, and a positioning hole 76a matched with the positioning block 22c is provided on the end cover 76 to protect the end of the vacuum pump 22.
  • the periphery of the main body 74 is provided with a plurality of protrusions 77 arranged side by side along the central axis of the main body 74 and surrounding the main body 74.
  • the outer diameter of the main body 74 of the elastic body 28 is smaller than the inner diameter of the pump casing 27, and the outer diameter of the elastic body 28 is larger than the inner diameter of the pump casing 27, so that when the elastic body 28 is installed inside the pump casing 27, the elastic body 28 It is squeezed and installed between the pump housing 27 and the vacuum pump 22, and an air cavity is formed between the protrusions 77 to improve the vibration and noise reduction effect of the elastic body 28.
  • the protrusion 77 is provided with a notch 77a, and the positions of the notches 77a on the plurality of protrusions 77 correspond to each other; the notches 77a reserve space for deformation of the elastic body 28, ensure the deformability of the elastic body 28, and improve the effect of vibration and noise reduction.
  • the notch 77a has a semicircular shape.
  • a plurality of notches 77a are evenly distributed on the protrusion 77. It should be understood that the present disclosure should not be limited to the shape and number of the notches 77a described above. The present disclosure can also apply other shapes of notches 77a, such as four arcuate notches 77a provided on a protrusion 77.
  • the pump casing 27 includes a first casing 27 b and a second casing 27 c.
  • the first casing 27 b and the second casing 27 c are clamped to be installed outside the elastic body 28.
  • the above pump casing 27 is arranged in a split type, which is convenient for disassembly and assembly.
  • Figs. 19-22 are schematic structural diagrams of the fixing mechanism of the low-pressure storage unit of the refrigerator; as shown in Figs. 19-22, the refrigerator 1 includes a plurality of fixing mechanisms for connecting the low-pressure storage unit 15 and the inner container 2b.
  • Each fixing mechanism includes a first fixing part 3 arranged on the bottom wall 42a of the low-pressure storage unit 15 and a second fixing part 11 arranged on the bottom wall of the inner liner 2b of the refrigerating compartment 12. With the combination of the two fixing parts 11, the low-pressure storage unit 15 is fixed to the refrigerating compartment 12.
  • the first fixing portion 3 has a first side plate 31, a second side plate 32, and a third side plate 33 connected in sequence, wherein the first side plate 31 and the third side plate 33 are perpendicular to the second side plate 32, and Located on the same side of the second side plate 32, a guide channel 36 is formed between the first side plate 31 and the third side plate 33, and a guide channel opening 36 a is formed at an end away from the second side plate 32.
  • the second side plate 32 is provided with a fixing hole 32a.
  • An end of the second side plate 32 away from the bottom wall 42a of the housing 4 is provided with a first bottom plate 34.
  • the first bottom plate 34 connects the second side plate 32 and the third side plate 33, and forms a limiting channel on the first bottom plate 34 35.
  • the limiting channel 35 extends in a direction away from the second side plate 32, and a limiting channel opening 35a is formed at the end of the first bottom plate 34 away from the second side plate 32, namely the guiding channel opening 36a and the limiting channel opening 35a
  • the direction is the same.
  • the limiting channel 35 can be configured as a gradual expansion type.
  • the plurality of first fixing parts 3 are uniformly distributed on the bottom wall 42a of the low-pressure storage unit 15 maintaining the orientation of the guide channel openings 36a.
  • the four first fixing parts 3 are arranged in two groups and two rows.
  • the guide channel opening 36a of the guide channel 36 faces the rear side of the casing 4 or is located on the side away from the fresh-keeping container 44, so as to minimize the gap between the installed low-pressure storage unit 15 and the inner liner 2b, so as to make full use of the refrigerator 1.
  • the internal space of the low-pressure storage unit 15 is avoided to reserve installation space for the installation of the low-pressure storage unit 15, thereby reducing the space occupied by the low-pressure storage unit 15.
  • the second fixing portion 11 has a second bottom plate 11a fixed on the bottom wall of the inner liner 2b, a fixing hook 11b matched with the fixing hole 32a, and a fixing column 11c connecting the second bottom plate 11a and the fixing hook 11b.
  • the fixing post 11c is installed in the guide channel 36 and the limiting channel 35; the fixing hook 11b is located between the first bottom plate 34 and the bottom wall 42a of the housing 4, and is installed in the fixing hole 32a to be clamped to the second side plate 32 At this time, the fixed post 11c abuts against the end of the limiting channel 35 close to the second side plate 32; the above coordinated arrangement restricts the three dimensions of the second fixed portion 11 to improve installation stability.
  • a plurality of second fixing parts 11 are uniformly distributed on the bottom wall of the inner liner 2b in a consistent orientation.
  • the bottom wall of the inner bladder 2b is provided with a recess 30 for fixing the second bottom plate 11a to fix the second fixing portion 11 and reduce the height of the space occupied by the second fixing portion 11.
  • Figures 23-26 are structural diagrams of the air duct mechanism of the low-pressure storage unit of the refrigerator; as shown in Figures 23-26, the refrigerator 1 has a first air duct connected to the main air duct and arranged adjacent to the low-pressure storage unit 15. Air duct 10; the first air duct 10 extends forward along the top of the low-pressure storage unit 15 to guide low-temperature air to the front end of the low-pressure storage unit 15; at the same time, when low-temperature air circulates in the first air duct 10, the first wind The area around the road 10 is cooled down.
  • the first air duct 10 is flat, and the above arrangement can increase the overlapping area of the first air duct 10 and the low-pressure storage unit 15 and improve the cooling effect.
  • the first air duct 10 may be set to be a gradual expansion type to increase the overlap area between the first air duct 10 and the front end of the low-pressure storage unit 15 to reduce the temperature difference between the front and rear of the low-pressure storage unit 15.
  • the front end of the first air duct 10 is provided with a first air outlet 10a located on its front end surface and a second air outlet 10b located on its lower end surface 5b.
  • the first air outlet 10a guides the low-temperature air to the front, diffuses the low-temperature air to the front end of the low-pressure storage unit 15 and reduces the temperature difference between the front and rear of the low-pressure storage unit 15.
  • the first air outlet 10a may be tapered along the air outlet direction, so as to increase the wind speed at the first air outlet 10a and increase the air supply distance.
  • the plurality of first air outlets 10a are arranged at intervals.
  • the second air outlet 10b guides the low-temperature air to the top of the low-pressure storage unit 15 and spreads on the top of the low-pressure storage unit 15 with the second air outlet 10b as the center to cover the low-pressure storage unit 15.
  • the second air outlet 10b can be set as a gradual expansion type; to ease the wind speed, make the low-temperature air flow along the gap between the first air duct 10 and the low-pressure storage unit 15 Spread around to cover the low-pressure storage unit 15.
  • the distance between the foremost end of the first air duct 10 and the foremost end of the low-pressure storage unit 15 is recorded as L1.
  • the length of the low-pressure storage unit 15 in the front-rear direction is recorded as L2, L1: L2 ⁇ [0.2, 0.8], the above settings can be efficiently
  • the low-temperature air is diffused to form a low-temperature environment on the peripheral side of the low-pressure storage unit 15 so as to reduce the temperature inside the low-pressure storage unit 15.
  • the first air duct 10 introduces low-temperature air into the peripheral side of the low-pressure storage unit 15 to surround the low-pressure storage unit 15, which can maintain a lower temperature environment compared to other locations in the refrigerating compartment 12, and enhance the refrigeration of the low-pressure storage unit 15. Freshness preservation effect.
  • the back wall of the inner bladder 2b is provided with a communicating port communicating with the main air duct, and the first air duct 10 is fixed on the communicating port.
  • the present disclosure should not be limited to the location of the first air duct 10 and the structural form of the first air duct 10. The present disclosure can also be applied to other positions and other structural forms that are adjacent to the low-pressure storage unit 15 and have low temperature.
  • the air is guided to the first air duct 10 at the front end of the low-pressure storage unit 15, for example, is provided at a side surface of the low-pressure storage unit 15 or the like.
  • Figures 27-29 are structural schematic diagrams of the pressure detection unit of the low-pressure storage unit of the refrigerator; as shown in Figures 27-29, the refrigerator 1 has a backside of the low-pressure storage unit 15 that detects the pressure in the low-pressure storage unit 15 and is connected to the pump.
  • the pressure detection unit 9 is electrically connected to the gas device to monitor the pressure in the low-pressure storage unit 15.
  • the pressure detection unit 9 sends a vacuum signal to pump air
  • the air extraction device works to form a "vacuum chamber" to ensure that when the low-pressure storage unit 15 has not been opened for a long time, the low-pressure storage unit 15 will reach the desired pressure when the pressure rises due to air leakage after a long time due to unavoidable reasons.
  • the air extraction device can work in time to ensure the vacuum degree of the low-pressure storage unit 15 so as to ensure the preservation effect of food.
  • the pressure detection unit 9 has a column 91 protruding from the back of the low-pressure storage unit 15.
  • the column 91 has a first through hole 91a communicating with the low-pressure storage chamber 14 of the low-pressure storage unit 15;
  • the rubber seal 92 at the end of the sealing column 91 and the pressure switch 93 abutting the rubber seal 92;
  • a spring 94 is provided between the rubber seal 92 and the bottom of the column 91, and a float is provided between the spring 94 and the rubber seal 92 Block 95.
  • the floating block 95 receives a certain air pressure to overcome the tension of the spring 94 to push the rubber seal 92 to move.
  • the rubber seal 92 is acted on by the floating block 95 to apply pressure to the pressure switch 93 to trigger the pressure switch 93; the pressure switch 93 sends a control signal to the control unit, and the control unit controls the air extraction device to pump the low-pressure storage unit 15 according to the control signal. vacuum.
  • the back area of the low-pressure storage unit 15 surrounded by the first through hole 91a is provided with a mounting block 45 fixed to one end of the spring 94; a floating block 95 is fixed at the other end of the spring 94; One end of the storage unit 15 is provided with a second through hole 91b with a radial dimension greater than the radial dimension of the first through hole 91a, so that an end of the column 91 away from the low-pressure storage unit 15 forms a mounting platform 46 for installing a rubber seal 92; a floating block 95 is T-shaped, which includes a floating plate 95a that is in contact with the rubber seal 92 and is provided with a recess 95c in the central area, and a floating column 95b connected to the spring 94.
  • the radial dimension of the floating plate 95a is larger than that of the floating column 95b. Radial size; the rubber seal 92 is a circular truncated shell shape with a supporting column 92a matching the concave portion 95c on the floating plate 95a at the center; the size of the circular truncated shell-shaped rubber seal 92 away from the mounting platform 46 is smaller than its close The size of one end of the mounting table 46.
  • the periphery of the column 91 is provided with a fixing table 47 on which the pressure cover 55 is installed; one side of the pressure cover 55 is provided with an annular groove 56 that matches with the column 91, and a fixing plate 57 corresponding to the fixing table 47 is arranged on the periphery of the groove 56
  • the other side of the pressure cover 55 is provided with an accommodation cavity 58 where the pressure switch 93 is installed; wherein, the bottom of the accommodation cavity 58 is provided with a third through hole 58a, so that the rubber seal 92 and the pressure switch 93 abut.
  • an elastic hook 58b for fixing the pressure switch 93 is provided at the mouth of the accommodating cavity 58.
  • the end of the column 91 is installed in the annular groove 56 of the pressure cover 55, the inner groove wall of the annular groove 56 presses the rubber seal 92, the fixing plate 57 is matched with the fixing table 47, and is fixedly connected by screws.
  • the pressure detection unit 9 provided above is integrated with the low-pressure storage unit 15 to improve the detection accuracy of the pressure detection unit 9 so that the pressure detection unit 9 can monitor the pressure in the low-pressure storage unit 15 in real time, and the pressure in the low-pressure storage unit 15 is higher than When the vacuum refrigeration function is lost due to the preset value, a vacuum signal is sent to the air extraction device in time to ensure the vacuum degree in the low-pressure storage unit 15 so as to ensure the freshness of the food.

Abstract

一种冰箱（1），其包括限定储藏间的箱体（2）、收容于储藏间内的低压储藏单元（15）、形成于箱体（2）内的主风道、与所述主风道相连通且设于所述低压储藏单元（15）外围的相邻位置的第一风道（10），所述第一风道（10）的前端部设有出风口（10a），以将冷空气导向所述低压储藏单元（15）的前端部。

Description

冰箱
相关申请的交叉引用
本公开要求在2019年12月12日提交中国专利局、申请号为201922234935.7、发明名称为“冰箱”，在2019年12月20日提交中国专利局、申请号为201911329075.3、发明名称为“冰箱”,以及2019年12月20日提交中国专利局、申请号为201922307500.0、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公开中。
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，以对真空室内进行除氧，以防止食品变质，延长食物的保存时间。低温环境能够降低微生物的活性，有助于提高保鲜效果。但目前冰箱内部与真空室处于同一空间内的区域处于同一温度环境，该温度虽能满足一般的保鲜冷藏需求，但会降低真空室的保鲜效果。
发明内容
本公开实施例提供了一种冰箱，包括：
箱体，限定隔热的储藏间；
低压储藏单元，收容于所述储藏间内，其内可被抽空气形成低于所述箱体外部大气压的气压；
主风道，形成于所述箱体内；
第一风道，其与所述主风道相连通，且设于所述低压储藏单元外围的相邻位置；所述第一风道的前端部设有出风口，以将冷空气导向所述低压储藏单元的前端部。
附图说明
图1为根据本公开一些实施例的冰箱的整体结构示意图；
图2为根据本公开一些实施例的冰箱的低压储藏单元的分解示意图；
图3为根据本公开一些实施例的冰箱的壳体的立体图；
图4为根据本公开一些实施例的冰箱的壳体的另一个角度的立体图；
图5为根据本公开一些实施例的冰箱的门体的分解示意图；
图6为根据本公开一些实施例的冰箱的门体与壳体处于关闭位置但并未锁紧时低压储藏单元的结构示意图；
图7为根据本公开一些实施例的冰箱的门体与壳体处于关闭位置但并未锁紧时低压储 藏单元的示意图局部剖视图；
图8为根据本公开一些实施例的冰箱的门体与壳体处于关闭位置但并未锁紧时低压储藏单元另一位置的示意图局部剖视图；
图9为根据本公开一些实施例的冰箱的门体与壳体锁紧时低压储藏单元的结构示意图；
图10为根据本公开一些实施例的冰箱的门体与壳体锁紧时低压储藏单元的示意图局部剖视图；
图11为根据本公开一些实施例的冰箱的门体与壳体解锁且处于分离状态时低压储藏单元的结构示意图；
图12为根据本公开一些实施例的冰箱的抽气装置与低压储藏单元及排水管的相对位置结构示意图；
图13为根据本公开一些实施例的冰箱的抽气装置与低压储藏单元及排水管的另一角度的相对位置结构；
图14为根据本公开一些实施例的冰箱的排水管与内胆的相对位置结构示意图；
图15为根据本公开一些实施例的冰箱的抽气装置整体结构示意图；
图16为根据本公开一些实施例的冰箱的弹性体的结构示意图；
图17为根据本公开一些实施例的冰箱的抽气装置的分解示意图；
图18为根据本公开一些实施例的冰箱的抽气装置的剖视图；
图19为根据本公开一些实施例的冰箱的壳体的立体图；
图20为图19中A区域的放大结构示意图；
图21为根据本公开一些实施例的冰箱的内胆与壳体的相对位置结构示意图；
图22为图21中B区域的放大结构示意图；
图23为本公开冰箱的冷藏室的剖视图；
图24为图23中C区域的放大结构示意图；
图25为根据本公开一些实施例的冰箱的冷藏室的立体图；
图26为图25中D区域的放大结构示意图；
图27为根据本公开一些实施例的冰箱的低压储藏单元的压力检测单元分解的立体图；
图28为图27中E区域的放大结构示意图；
图29为根据本公开一些实施例的冰箱的低压储藏单元示意图的局部剖视图。
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，本公开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。
图1-图11为冰箱的低压储藏单元的锁紧机构结构示意图；请参照图1-图11，一种冰箱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限定多个隔热的储藏间以储藏食物等物品。在本实施例中，这些储藏间分别是位于上部的冷藏室12、位于底部的冷冻室。储藏间可由各自对应的箱门关闭。本公开中冷藏室12设置冷藏对开门，冷冻室设置冷冻对开门。
应当理解，本公开不应当局限于冰箱1的储藏隔间的具体分布形式，本公开也可以应用其他形式的冰箱1，例如具有抽屉式门的冰箱1等。
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15以及用以将气体从低压储藏单元15内抽离的抽气装置。抽气装置可以包括真空泵22以及连接在真空泵22和低压储藏单元15之间的管路。
冰箱1设有控制抽气装置对低压储藏单元15进行抽真空的控制单元，以实现对低压储藏单元15抽真空的自动控制。
在本实施例中，低压储藏单元15设置在冷藏室12内。应当理解，在其他的实施例中，低压储藏单元15也可以设置在其他储藏间内，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。
低压储藏单元15位于冷藏室12的底部，被支撑在冷藏室12的底壁上。低压储藏单元15的相邻位置可设有一个湿度较高、适于保存蔬菜等食品的保鲜容器44；低压储藏单元15与保鲜容器44并列设置于冷藏室12的底部。
低压储藏单元15可独立于箱体2地构造后组装在箱体2内。请参照图2-图4，在本实施例中，低压储藏单元15具有大致为扁平的长方体状，低压储藏单元15的宽度与保鲜容器44的宽度之和稍小于冷藏室12的宽度，从而有效分配冷藏室12的底部空间，使得保鲜容器44和低压储藏单元15均可插入冷藏室12内或从冷藏室12内拉出。
低压储藏单元15包括固定在冷藏室12内的壳体4以及连接于壳体4并可推入或退出冷藏室12的门体5。
请参照图2-图4，壳体4具有箱形结构，它限定具有食物取放口14a的扁平低压储藏室14。本实施例中，取放口14a位于面向使用者的壳体4的前端。
壳体4的箱壁外侧设有网格状的加强筋40，以增加壳体4的箱壁强度，避免壳体4于抽真空后因内外气压差所引起变形。
壳体4包括相连接形成低压储藏室14的上壳体41和下壳体42，上壳体41与下壳体42通过超声波焊接为一体；具体的，下壳体42包括底壁42a及依次连接设于底壁42a边沿处的第一下侧壁42c、下后壁42b、第二下侧壁42d、及位于下壳体42的前端部并形成有取放口14a的前端壁42e；其中下壳体的底壁42a即为低压储藏单元15的底壁。本实施例中，前端壁42e可具有大致垂直于水平面、用以与门体5对接的平整的对接面43。
上壳体41包括顶壁41a及依次连接设于顶壁41a边沿处的上后壁41b、第一上侧壁41c、第二上侧壁41d；上壳体41的第一上侧壁41c和第二上侧壁41d的下壁面与顶壁41a的距离由后向前均呈线性减小，并于顶壁41a的前端边沿处减小为0。即第一上侧壁41c与第二上侧壁41d于垂直于顶面的平面上的投影为三角形。
其中，上后壁41b与下后壁42b相配合，第一下侧壁42c与第一上侧壁41c相配合，第二下侧壁42d与第二上侧壁41d相配合；顶壁41a的前端部与下壳体42的前端壁42e相配合，通过超声波焊接将以上相对接位置焊接固定，以将上壳体41和下壳体42固定连接，以形成低压储藏室14。以上超声波焊接有效提高了上壳体41与下壳体42的连接强度，并确保了壳体4整体的气密性。另外，壳体4的取放口14a形成于下壳体42的前端壁42e上，使壳体4的取放口14a具有一体性，有效保障壳体4的气密性。再者，第一上侧壁41c和第二上侧壁41d的下壁面与顶壁41a的距离由后向前均呈线性减小，并于顶壁41a的前端边沿处减小为0的设置，减少了上壳体41与下壳体42配合的对接面的数量，提高壳体4的整体气密性，尤其是壳体4于取放口14a处的气密性。另一方面，壳体4设置为上壳体41与下壳体42的分体结构，方便加工网格状的加强筋40。
门体5可设置环形的密封元件16，以使门体5处于关闭位置时壳体4与门体5之间形成气密性接合，防止气体从壳体4和门体5之间的接合处进入低压储藏室14。密封元件16也可以设置在壳体4的前端，例如连接在前端壁42e上。
当低压储藏室14被门体5关闭且抽气装置启动时，位于低压储藏室14内的气体被抽离，低压储藏室14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14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14内的气压低于标准大气压，本领域技术人员也俗称其“真空室”。
门体5为抽屉式门，门体5可被推向壳体4以关闭低压储藏室14的取放口14a，或者拉出以打开低压储藏室14。门体5的后侧连接托盘状的置物容器54用以放置物品。用户通过将置物容器54推入或拉出低压储藏室14来获得位于低压储藏单元15内的物品或将物品存放在低压储藏单元15内。门体5和置物容器54一起构成了可推入和拉出壳体4内的抽屉单元。
置物容器54和壳体4之间可设置可伸缩的导轨单元17，从而门体5以及置物容器54可流畅地从壳体4中拉出或推入壳体4内。
低压储藏单元15包括一对用以将处于关闭位置的门体5和壳体4锁紧的锁紧机构。如图2-图11所示，每个锁紧机构包括设置在壳体4上的第一配合部6及围绕旋转轴X可旋转地设于门体5的两端用于与相应侧的第一配合部6配合实现门体5的锁定与解锁的第二配合部7。通过第二配合部7和第一配合部6的结合，门体5被锁定在关闭位置，且壳体4和门体5之间的密封元件16受锁紧机构产生的锁紧力挤压而充分变形，进而门体5和壳体4之间的气密性提高。
壳体4靠近取放口14a处的第一下侧壁42c和第二下侧壁42d上均设有锁扣容纳部61及位于锁扣容纳部61内的第一配合部6；壳体4上设有平行于壳体4的底壁42a的第一围板60a、与第一围板60a远离取放口14a一端的后端部相连且向前向下延伸至壳体4的最前端的第二围板60b。第一围板60a与第二围板60b连接形成锁扣容纳部61。锁扣容纳部61于壳体4的最前端形成有通过口64，通过口64用于插入或抽出第二配合部7。本实施例中，第一围板60a和第二围板60b远离壳体4箱壁的端面与加强筋40上远离壳体4箱壁 的端面共端面。第一配合部6上远离壳体4箱壁的端面与加强筋40上远离壳体4箱壁的端面共端面，以上设置能够确保不增加低压储藏单元15的占用空间，以充分利用空间。
第一配合部6包括锁定部62；锁扣容纳部61内，锁定部62固定于第一围板60a上；锁定部62包括垂直于第一围板60a的锁定壁62a和倾斜设置的导向壁62b；导向壁62b的一端与锁定壁62a远离第一围板60a的端部相连接，另一端与第一围板60a靠近取放口14a的端部相连接。
壳体4至少其中一侧的锁扣容纳部61的上部设有与抽气装置电性连接且用于与第二配合部7配合检测门体5的锁定与解锁状态的位置检测装置。位置检测装置包括固定安装于壳体上的行程开关63、可滑动连接于壳体上的行程推杆63a；行程开关63具有触发部；行程推杆63a的一端与触发部配合，另一端与第二配合部7配合；第二配合部7沿锁定壁62a滑移时，推动行程推杆63a移动，进而触发行程开关63。第一围板60a上设有与导向壁62b分居于锁定壁62a的两侧的开口65；开口65与锁定壁62a相邻设置。行程开关63的行程推杆63a通过开口65伸入锁扣容纳部61内，并位于锁定壁62a的相邻位置。
如图2、图5-图11所示，门体5上连接有装饰盖8。门体5的两相对端设有连接件83，第二配合部7可旋转地设于连接件83上。第二配合部7绕其旋转轴X进行旋转，并带动与之固定的把手81旋转。
把手81的两端分别固定一个第二配合部7。在本实施例中，第二配合部7固定于把手81的相应末端后，通过固定装置例如螺钉而将其不可相对把手81移动地固定在把手81上，从而当把手81旋转移动时，第二配合部7也围绕旋转轴X旋转。
在本公开一些实施例中，第二配合部7包括锁定板，锁定板可绕旋转轴X转动，旋转轴X的轴线水平方向设置并与把手81具有设定距离，锁定板面向壳体4侧壁的一侧设有凸块72，锁定板在把手81的驱动下绕旋转轴X转动时，凸块72沿导向壁62b滑移至锁定壁62a后侧实现门体5与壳体4的锁定。
锁定板呈平板状，其包括依次首尾相接的第一板条71a、第二板条71b和第三板条71c，第一板条71a与第二板条71b连接处延伸形成与第一板条71a位于第三板条71c的同一侧且与第一板条71a之间呈锐角的第四板条71d。
第二板条71b的中间位置可旋转地固定于门体5端部的连接件83上；凸块72设于第二板条71b与第三板条71c的连接处。第四板条71d远离第三板条71c的端部固定于把手81的相应末端。当把手81旋转移动时，把手81通过第四板条71d带动第二配合部7整体绕其位于第二板条71b中间位置的旋转轴X旋转。
门体5的前侧可设有用以关闭或打开设置在门体5上、用于连通低压储藏单元15的内外两侧的充气通道18(如图5所示)、用于关闭或打开充气通道18的泄压装置。泄压装置包括与第二配合部7联动的杆体20、固定连接于杆体20上旋转板59及固定于旋转板59上用于关闭或打开充气通道18的泄压件19。其中杆体20的两端分别固定于对应侧的锁定板上，杆体20与凸块72分别位于旋转轴X的两侧；旋转板59的旋转轴线与第二配合部的旋转轴X重合；第二配合部7在把手81的驱动下绕旋转轴X转动时，带动杆体20以及旋转板59同轴转动，泄压件19关闭充气通道18。其中，杆体20的两端部贯穿装饰盖8，第二配合部7的第一板条71a与杆体20的相应一端不可相对移动地固定。装饰盖8两侧设有与杆体20旋转运动轨迹相一致的避让孔39，且门体5与装饰盖8之间存在供杆体20旋转运动的间隙。
结合图2参照图5，门体5具有从其前表面5a向后凹陷、用以收容泄压装置的至少一部分的收容腔52。充气通道18设于收容腔52远离装饰盖8的腔壁上，并连通低压储藏室14和收容腔52；收容腔52内设有以旋转轴X为中心轴的凸柱53；旋转板59一端与杆体20固定、另一端可绕凸柱53旋转地固定于收容腔52内；泄压件19设于旋转板59的内侧；旋转板59与收容腔52远离装饰盖8的腔壁之间设有与泄压件19分居于旋转板59相对两侧的扭簧。门体5与壳体4锁紧时，第一配合部6与第二配合部7锁定，扭簧压紧旋转板59，使泄压件19压紧充气通道18。门体5处于关闭位置但尚未被锁紧时，释放施加的外力后，在扭簧的作用下，旋转板59向内向下压，旋转板59带动第二配合部7和把手81向内向下旋转；如此在用户关闭门体时，能够减小用户，使关闭操作简易化；另外，扭簧能够限制把手81向上向前旋转的极限位置，这可防止把手81继续旋转而导致把手81的上端向门体5前表面5a靠近时用户的手被把手81和门体5挤压。
根据本公开一些实施例，旋转板59的端部设有用于安装杆体20且截面呈多边形的固定通道，杆体20截面形状与固定通道截面形状相一致，截面多边形的设置使杆体20与旋转板59不可产生相对旋转运动。
如图6-图8所示，门体5处于关闭位置但尚未被锁紧时的状态，此时把手81处于第一位置。当用户向下向后按压把手81时，把手81围绕着第二配合部7的旋转轴X向内旋转，同时把手81带动第二配合部7和杆体20向内旋转，第二配合部7的凸块72逐渐靠近锁定部62远离取放口14a的一侧，同时逐渐靠近行程开关63的行程推杆63a；杆体20带动旋转板59向内旋转，旋转板59带动泄压件19逐渐靠近充气通道18。
如图9-图10所示，门体5和壳体4处于锁紧状态，此时把手81处于第二位置。当把手81旋转至第二位置时，第二配合部7旋转进入锁扣容纳部61，第二配合部7上的凸块72移动至锁定壁62a后侧的相邻位置，并推动行程推杆63a上移，触发行程开关63，行程开关63发送门关闭的控制信号至控制单元，控制单元根据控制信号控制抽气装置开始抽气；此时，泄压件19与充气通道18紧密接触以封堵充气通道18，低压储藏室14形成封闭空间。以上第一配合部6、第二配合部7、与抽气装置电性连接的行程开关63的设置，能够及时监测门体5与壳体4的锁定状态，以于门体5与壳体4锁定时，及时发送抽真空信号给抽气装置，以确保低压储藏单元15的真空度，确保食物的保鲜效果。
如图11所示，门体5和壳体4处于解锁且分离的打开状态时，推动门体5进行关闭；作为一种关门方式，用户可以向上提起把手81并向壳体4推动，待门体5处于关闭位置但尚未被锁紧状态时，向下向后按压把手81即可完成锁定，同时泄压件19与充气通道18紧密接触以封堵充气通道18。作为另一种关门方式，用户可直接推动装饰盖8，在装饰盖8的带动下，第二配合部7平行移动至锁扣容纳部61，第二配合部7上的凸块72与锁定部62的导向壁62b相接触，在水平推力和导向壁62b的作用下，凸块72沿导向壁62b下移，并带动第二配合部7绕旋转轴X向下旋转；凸块72向下移动逐渐靠近导向壁62b与锁定壁62a的连接处，；继续推动门体5向壳体4移动，凸块72移动至锁定壁62a后侧的相邻位置，门体5与壳体4锁定；同时泄压件19与充气通道18紧密接触以封堵充气通道18。在本公开中，直接推动门体5前侧的装饰盖8进行推动关闭的关门方式，无需使用把手81，方便快捷，减少用户的将施力点放置于门把手81上的精力投入；同时在导向壁62b的作用下，锁定过程流畅稳定，避免撞击。
门体5和壳体4处于锁紧状态，当要打开门体5时，用户可握住把手81的下端向上 向外抬，把手81围绕旋转轴X旋转，固定在连接件83上的第二配合部7向上旋转。在这个过程中，杆体20向上旋转并带动旋转板59绕旋转轴X向上旋转，泄压件19也解除了对充气通道18的封闭，外部气体通过充气通道18进入低压储藏室14而平衡内外压力。之后，用户可握住把手81向前拉，即可打开门体5。
以上第二配合部7和第一配合部6不增加低压储藏单元15占用空间的情况下，完成锁定，结构紧凑，配合稳定。
第二配合部7和第一配合部6在锁紧位置的结合给门体5和壳体4之间提供一个锁紧力，而使密封元件16充分变形，进而提高门体5和壳体4之间的气密性。
当把手81处于如图9和图10所示的位置时，充气通道18被泄压件19紧密关闭；当把手81处于如图6-图8所示的位置时，充气通道18已被打开，外部气体可通过充气通道18进入低压储藏室14进而释放低压储藏室14的低压状态。应当理解，在其他的实施例中，充气通道18和泄压件19也可以孤立于把手81地设置。例如在门体5上设有一个按钮，通过按压该按钮，充气通道18被打开，之后用户再操作把手81以打开门体5。
门体5靠近其下端面5b的区域从其前表面5a向后凹陷形成容纳把手81的容纳空间82；本实施例中，容纳空间82的下端延伸至门体5的下端面5b，且左右两端延伸至门体5的侧端面5c。门体5锁定状态时，把手81位于容纳空间82内，把手81的前表面与门体5位于容纳空间82上部的门体5的前表面5a相平齐，以减少低压储藏单元15的占用体积。特别优选地，处于第二位置的把手81完全容纳在门体5的容纳空间82内，不超出门体5的前表面。门体5处于关闭位置但尚未被锁紧时的状态，此时把手81处于第一位置，把手81移出容纳空间82，并位于门体5的前表面5a的前侧；把手81处于第一位置发生于用户打开低压储藏单元15时，此时冰箱1的箱门打开，不影响低压储藏单元15所占用冰箱1内部空间的设置。
在冰箱1的箱门处于关闭状态且低压储藏单元15的门体5处于关闭位置但把手81处于第二位置(退回位置)时，箱门的内侧与把手81保持一定的距离以免关闭箱门时对低压储藏单元15造成损坏。因此，通过将把手81设置于容纳空间82内，从而低压储藏单元15和冰箱1的箱门内侧之间的距离可以被减小，进而可增加冰箱1的空间利用率。
装饰盖8连接在门体5上以从门体5的正面遮蔽泄压装置。以此，杆体20整体地位于门体5内。
在被固定到门体5之后，把手81可旋转地连接于门体5上。当旋转把手81时，第二配合部7旋转、杆体20和旋转板59都围绕着旋转轴X进行旋转。
把手81可围绕着旋转轴X在第一位置和第二位置之间旋转。在第一位置，把手81与门体5的容纳空间82靠近壳体4的壁面之间形成的夹角最大，其下端与门体5的容纳空间82靠近壳体4的壁面之间形成最大的距离，因此第一位置也可称为伸出位置。在第二位置，把手81与门体5上的容纳空间82靠近壳体4的壁面之间形成的夹角最小，其下端与容纳空间82靠近壳体4的壁面之间形成最小的距离，因此第二位置也可称为退回位置。相应地，与把手81联动的第二配合部7及与第二配合部7联动的杆体20也被限制在第一极限位置和第二极限位置之间旋转，其中，当把手81处于第一位置时，第二配合部7和杆体20均处于第一极限位置(如图6和图8所示)，当把手81处于第二位置，第二配合部7和杆体20均处于第二极限位置(如图9所示)。
图12-图14为冰箱的低压储藏单元的排气设置的结构示意图；如图12-图14所示，冰 箱1具有用于排出冰箱1内部冷凝水的排水管21。抽气装置一端与低压储藏单元15相连通，另一端与冰箱1的排水管21相连通。抽气装置运作，将低压储藏单元15内的空气抽出并输送至排水管21，最终由排水管21排出冰箱1。以避免将由低压储藏单元15内抽出的气体直接排入冰箱1内部而使冷藏室12内其它区域的食物互相串味，影响食品的保鲜效果。
抽气装置包括真空泵22、连接真空泵22与低压储藏单元15的第一管路23及连接真空泵22与排水管21的第二管路24。真空泵22设于冷藏室12的内胆2b上，且靠近低压储藏单元15的底部。
低压储藏单元15顶部靠近后端的位置设有与第一管路23相连接的抽气口，排水管21上设有与第二管路24相接的排气口；
真空泵22具有泵体、与第一管路23相连通的抽气管22a及与第二管路24相连通的排气管22b。真空泵22的抽气管22a与排气管22b并列设置，且位于真空泵22的同一端；第一管路23与低压储藏单元15上的抽气口固定后弯折转向后沿低压储藏单元15后端顶部边沿处延伸，而后于第一转向位A1弯折90度转向内胆2b后壁，且与低压储藏单元15顶壁41a保持平行延伸至第二转向位B1；在第二转向位B1再次转向90度向下延伸至第三转向位C1；在第三转向位C1处再次转向与抽气管22a相连通；其中，于储藏单元底壁42a所在平面的投影上，第二转向位B1与第三转向位C1投影均位于抽气管22a投影的延长线上；另外，第一转向位A1的投影落于低压储藏单元15的投影上，第二转向位B1的投影位于内胆2b后壁的投影与低压储藏单元15后壁的投影之间。其中，第二转向位B1的投影与第三转向位C1的投影相重合。第二管路24连通真空泵22的排气管22b，并穿过内胆2b以与排水管21上的排气口相连通。以上第一管路23的多次转向设置使管路的路径整齐，并减小管路垂直于内胆2b后壁方向上所占用的空间，以增大低压储藏单元15的可用空间。
应当理解，本公开不应当局限于以上所描述的第一抽气管22a的转向形式，本公开也可应用其它转向形式，以减小管路的占用空间。
图15-图18为冰箱的抽气装置的结构示意图；如图15-图18所示，抽气装置包括泵壳27及套设于泵体与泵壳27之间的弹性体28。泵壳27上设有与内胆2b后壁固定的连接板27a；本实施例中，连接板27a上设有螺钉孔，通过螺钉将泵壳27与内胆2b后壁固定连接。
弹性体28具有安装真空泵22的主体部74，主体部74上设有与真空泵22形状相一致的安装腔74a；主体部74的安装腔74a的径向尺寸小于真空泵22对应位置的径向尺寸，使弹性体28紧贴真空泵22，以及时吸收真空泵22上的振动。
真空泵22上与设置抽气管22a和排气管22b相对的一端设有定位块22c；主体部74的安装腔74a的一端设有供抽气管22a与排气管22b穿出的穿孔75，另一端设有与真空泵22端部相配合的端盖76，端盖76上设有与定位块22c相配合的定位孔76a；以对真空泵22的端部进行保护。
主体部74的外围设有多个沿主体部74的中心轴并列设置并环绕主体部74的凸起77。弹性体28的主体部74的外径尺寸小于泵壳27的内径尺寸，弹性体28的外径尺寸大于泵壳27的内径尺寸，以在弹性体28安装于泵壳27内部时，弹性体28受挤压安装于泵壳27与真空泵22之间，并于多个凸起77之间形成空气腔，以提高弹性体28的减振降噪效果。
凸起77上设有缺口77a，多个凸起77上的缺口77a位置相对应；缺口77a为弹性体 28变形预留空间，确保弹性体28的变形能力，提高减振降噪效果。本实施例中，缺口77a呈半圆型。多个缺口77a均匀分布于凸起77上。应当理解，本公开不应当局限于以上所描述的缺口77a的形状、个数，本公开也可应用其它形状的缺口77a，如一个凸起77上设置4个弓形缺口77a。
泵壳27包括第一壳体27b和第二壳体27c，第一壳体27b与第二壳体27c相卡接以安装于弹性体28外侧。以上泵壳27分体式的设置，方便拆装。
图19-图22为冰箱的低压储藏单元的固定机构的结构示意图；如图19-图22所示，冰箱1包括多个用以将低压储藏单元15和内胆2b连接的固定机构。每个固定机构包括设置在低压储藏单元15的底壁42a上的第一固定部3以及设置在冷藏室12的内胆2b底壁上的第二固定部11，通过第一固定部3和第二固定部11的结合，低压储藏单元15被固定于冷藏室12。
第一固定部3具有依次连接的第一侧板31、第二侧板32及第三侧板33，其中第一侧板31与第三侧板33均与第二侧板32相垂直，且位于第二侧板32的同一侧，以于第一侧板31与第三侧板33之间形成导向通道36，并于远离第二侧板32的一端形成导向通道口36a。第二侧板32上设有固定孔32a。第二侧板32远离壳体4的底壁42a的一端设有第一底板34，第一底板34连接第二侧板32和第三侧板33，并于第一底板34上形成限位通道35，限位通道35向远离第二侧板32的方向延伸，并于第一底板34远离第二侧板32的端部形成限位通道口35a，即导向通道口36a与限位通道口35a方向一致。其中，沿第二侧板32向限位通道口35a的方向，限位通道35可设置为渐扩式。多个第一固定部3保持导向通道口36a方位一致地分布于低压储藏单元15的底壁42a上。本实施例中，四个第一固定部3呈两组两列设置。导向通道36的导向通道口36a朝向壳体4后侧或位于背离保鲜容器44的一侧，以使安装后的低压储藏单元15与内胆2b之间的间隙尽量减小，以充分利用冰箱1的内部空间，避免为安装低压储藏单元15而预留安装空间，从而减少低压储藏单元15的占用空间。
第二固定部11具有固定于内胆2b的底壁上的第二底板11a、与固定孔32a相配合的固定勾11b及连接第二底板11a与固定勾11b的固定柱11c。固定柱11c安装于导向通道36和限位通道35内；固定勾11b位于第一底板34与壳体4的底壁42a之间，且安装于固定孔32a内与第二侧板32相卡接，此时，固定柱11c与限位通道35靠近第二侧板32的端部相抵接；以上配合设置对第二固定部11的三个维度进行限位，提高安装稳定性。多个第二固定部11保持方位一致分布于内胆2b的底壁上。本实施例中，内胆2b的底壁上设有固定第二底板11a的凹坑30，以固定第二固定部11，并降低第二固定部11占用空间的高度。
装配时，调整低压储藏单元15的位置，使第二固定部11的固定勾11b与第一固定部3的导向通道口36a相对应，固定柱11c与限位通道口35a相对应；然后推动低压储藏单元15，使第一固定部3的第一侧板31靠近第二固定部11，直至固定勾11b安装于第一固定部3的固定孔32a内，即完成装配。以上能够在直接推动来完成低压储藏单元15与内胆2b的装配，简单方便，快捷有效。
图23-图26为冰箱的低压储藏单元的风道机构的结构示意图；如图23-图26所示，冰箱1具有与主风道相连通、设置于低压储藏单元15相邻位置的第一风道10；第一风道10沿低压储藏单元15的顶部向前延伸，以将低温空气导向低压储藏单元15的前端部；同时，低温空气在第一风道10流通时，对第一风道10周围区域进行降温。
第一风道10呈扁平状，以上设置能够增大第一风道10与低压储藏单元15的重叠面积，提高降温效果。沿出风方向，第一风道10可设置为渐扩式，以增大第一风道10与低压储藏单元15前端的重叠面积，以减少低压储藏单元15前后的温差。
第一风道10的前端部设有位于其前端面的第一出风口10a和位于其下端面5b的第二出风口10b。第一出风口10a将低温空气导向前方，使低温空气向低压储藏单元15的前端部扩散，减少低压储藏单元15前后的温差。第一出风口10a沿出风方向可呈渐缩式，以于第一出风口10a处提高风速，增大送风距离。本实施例中，多个第一出风口10a间距设置。
第二出风口10b将低温空气导向低压储藏单元15的顶部，并以第二出风口10b为中心在低压储藏单元15的顶部扩散，以覆盖低压储藏单元15。由第一风道10向低压储藏单元15顶部的方向，第二出风口10b可设置为渐扩式；以缓和风速，使低温空气沿第一风道10与低压储藏单元15之间的间隙向四周扩散，以覆盖低压储藏单元15。
第一风道10的最前端与低压储藏单元15的最前端之间的距离记为L1低压储藏单元15前后方向的长度记为L2，L1：L2∈[0.2，0.8]，以上设置能够高效地扩散低温空气，以于低压储藏单元15周侧形成低温环境，从而降低低压储藏单元15内部的温度。
以此，第一风道10将低温空气导入低压储藏单元15周侧，以环绕低压储藏单元15，能够维持相对于冷藏室12的其它位置温度更低的低温环境，增强低压储藏单元15的冷藏保鲜效果。
本实施例中，内胆2b后壁上设有连通主风道的连通口，第一风道10固定于连通口上。应当理解，本公开不应当局限于第一风道10的设置位置及第一风道10的结构形式，本公开也可以应用其他位置和其它结构形式的与低压储藏单元15位置相邻并将低温空气导向低压储藏单元15前端的第一风道10，例如设置于低压储藏单元15的侧面等位置。
图27-图29为冰箱的低压储藏单元的压力检测单元的结构示意图；如图27-图29所示，冰箱1具有设置于检测低压储藏单元15背部、检测低压储藏单元15内压力且与抽气装置电性连接的压力检测单元9，以监测低压储藏单元15内压力，在低压储藏单元15内压力高于预设值而失去真空冷藏作用时，压力检测单元9发出抽真空信号给抽气装置，抽气装置工作以形成“真空室”，以确保在低压储藏单元15长时间未打开情况下，低压储藏单元15因不可避免的原因而于长时间后漏气所造成压力上升时达到预设值时，抽气装置能够及时工作以确保低压储藏单元15的真空度，从而确保食物的保鲜效果。
压力检测单元9具有凸出于低压储藏单元15背部的立柱91，立柱91具有与低压储藏单元15的低压储藏室14相连通的第一通孔91a；立柱91远离低压储藏单元15的一端设有密封立柱91端部的橡胶密封件92和与橡胶密封件92相抵接的压力开关93；橡胶密封件92与立柱91底部之间设有弹簧94，弹簧94与橡胶密封件92之间设有浮动块95。当低压储藏单元15内压力增大到一定程度时，立柱91的第一通孔91a内压力随之增大，浮动块95受到一定的气压作用，克服弹簧94的拉力推动橡胶密封件92移动，橡胶密封件92受所述浮动块95作用向压力开关93施加压力，以触发压力开关93；压力开关93发送控制信号至控制单元，控制单元根据控制信号控制抽气装置对低压储藏单元15进行抽真空。
在本公开的一个实施方式中，第一通孔91a环绕的低压储藏单元15的背部区域设有与弹簧94的一端固定的安装块45；弹簧94另一端固定有浮动块95；立柱91远离低压储藏单元15的一端设有径向尺寸大于第一通孔91a径向尺寸的第二通孔91b，以于立柱91远 离低压储藏单元15的一端形成安装橡胶密封件92的安装台46；浮动块95呈T型，其包括与橡胶密封件92相抵接且中心区域设有凹陷部95c的浮板95a，及与弹簧94相连接的浮动柱95b，浮板95a的径向尺寸大于浮动柱95b的径向尺寸；橡胶密封件92为中心部位设有与浮板95a上凹陷部95c配合的抵柱92a的圆台壳形；其中圆台壳形的橡胶密封件92远离安装台46一端的尺寸小于其靠近安装台46一端的尺寸。
立柱91外围设有安装压力盖55的固定台47；压力盖55一侧设有与立柱91相配合的环状的凹槽56，凹槽56外围设有与固定台47相对应的固定板57；压力盖55另一侧设有安装压力开关93的容置腔58；其中，容置腔58的底部设有第三通孔58a，以使橡胶密封件92与压力开关93相抵接。本实施例中，容置腔58的腔口处设有用于固定压力开关93弹性卡勾58b。立柱91的端部安装于压力盖55的环状凹槽56内，环状凹槽56的内槽壁压紧橡胶密封件92，固定板57与固定台47相配合，并通过螺钉固定连接。
以上设置的压力检测单元9与低压储藏单元15具有一体性，提高了压力检测单元9的检测准确度，使压力检测单元9实时监测低压储藏单元15内压力，在低压储藏单元15内压力高于预设值而失去真空冷藏作用时，及时发出抽真空信号给抽气装置，以确保在低压储藏单元15的真空度，从而确保食物的保鲜效果。
以上所述，仅是本公开的一些实施例而已，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，其特征在于：
    箱体，限定隔热的储藏间；
    低压储藏单元，收容于所述储藏间内，其内可被抽空气形成低于所述箱体外部大气压的气压；
    主风道，形成于所述箱体内；
    第一风道，其与所述主风道相连通，且设于所述低压储藏单元外围的相邻位置；所述第一风道的前端部设有出风口，以将冷空气导向所述低压储藏单元的前端部。
  2. 根据权利要求1所述的冰箱，其特征在于：所述第一风道呈扁平状，且平行于所述低压储藏单元的壳壁。
  3. 根据权利要求2所述的冰箱，其特征在于：沿出风方向，所述第一风道呈渐扩式。
  4. 根据权利要求3所述的冰箱，其特征在于：所述出风口包括位于所述第一风道前端面的第一出风口。
  5. 根据权利要求4所述的冰箱，其特征在于：所述第一出风口沿出风方向呈渐缩式。
  6. 根据权利要求5所述的冰箱，其特征在于：多个所述第一出风口间距设置。
  7. 根据权利要求4所述的冰箱，其特征在于：所述出风口包括位于所述第一风道靠近所述低压储藏单元一侧的第二出风口。
  8. 根据权利要求7所述的冰箱，其特征在于：沿由所述第一风道向与所述第一风道相邻的低压储藏单元的壳壁的方向，所述第二出风口呈渐扩式。
  9. 根据权利要求2-8其中任一项所述的冰箱，其特征在于：所述第一风道位于所述低压储藏单元的顶部。
  10. 根据权利要求2-8其中任一项所述的冰箱，其特征在于：所述第一风道的最前端与所述低压储藏单元的最前端之间的距离记为L1，所述低压储藏单元前后方向的长度记为L2，L1：L2∈[0.2，0.8]。
PCT/CN2020/126295 2019-12-12 2020-11-03 冰箱 WO2021114958A1 (zh)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004251598A (ja) * 2003-02-21 2004-09-09 Toshiba Corp 冷蔵庫
CN201028926Y (zh) * 2007-04-29 2008-02-27 合肥美菱股份有限公司 冰箱真空保鲜盒
JP2010014295A (ja) * 2008-07-02 2010-01-21 Hitachi Appliances Inc 冷蔵庫
CN101706189A (zh) * 2009-03-05 2010-05-12 海尔集团公司 一种多变温室冰箱
CN202420077U (zh) * 2011-12-06 2012-09-05 合肥美的荣事达电冰箱有限公司 冰箱
CN205037667U (zh) * 2015-10-10 2016-02-17 天津商业大学 冷库送风风道结构
CN109737665A (zh) * 2018-11-28 2019-05-10 青岛海尔股份有限公司 冷藏冷冻装置
CN111207553A (zh) * 2020-01-16 2020-05-29 海信（山东）冰箱有限公司 冰箱
CN111207554A (zh) * 2020-01-16 2020-05-29 海信（山东）冰箱有限公司 冰箱
CN211204581U (zh) * 2019-12-12 2020-08-07 海信（山东）冰箱有限公司 冰箱

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004251598A (ja) * 2003-02-21 2004-09-09 Toshiba Corp 冷蔵庫
CN201028926Y (zh) * 2007-04-29 2008-02-27 合肥美菱股份有限公司 冰箱真空保鲜盒
JP2010014295A (ja) * 2008-07-02 2010-01-21 Hitachi Appliances Inc 冷蔵庫
CN101706189A (zh) * 2009-03-05 2010-05-12 海尔集团公司 一种多变温室冰箱
CN202420077U (zh) * 2011-12-06 2012-09-05 合肥美的荣事达电冰箱有限公司 冰箱
CN205037667U (zh) * 2015-10-10 2016-02-17 天津商业大学 冷库送风风道结构
CN109737665A (zh) * 2018-11-28 2019-05-10 青岛海尔股份有限公司 冷藏冷冻装置
CN211204581U (zh) * 2019-12-12 2020-08-07 海信（山东）冰箱有限公司 冰箱
CN111207553A (zh) * 2020-01-16 2020-05-29 海信（山东）冰箱有限公司 冰箱
CN111207554A (zh) * 2020-01-16 2020-05-29 海信（山东）冰箱有限公司 冰箱

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