WO2022057683A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2022057683A1
WO2022057683A1 PCT/CN2021/116934 CN2021116934W WO2022057683A1 WO 2022057683 A1 WO2022057683 A1 WO 2022057683A1 CN 2021116934 W CN2021116934 W CN 2021116934W WO 2022057683 A1 WO2022057683 A1 WO 2022057683A1
Authority
WO
WIPO (PCT)
Prior art keywords
state
compartment
dew
refrigerator
air
Prior art date
Application number
PCT/CN2021/116934
Other languages
English (en)
French (fr)
Inventor
吕鹏
李佳明
崔展鹏
张�浩
Original Assignee
青岛海尔电冰箱有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔电冰箱有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔电冰箱有限公司
Priority to EP21868508.9A priority Critical patent/EP4206584A4/en
Priority to US18/245,366 priority patent/US20230332824A1/en
Publication of WO2022057683A1 publication Critical patent/WO2022057683A1/zh

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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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • 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
    • F25D2323/023—Door in door constructions

Definitions

  • the invention relates to the technical field of refrigeration and freezing, in particular to a refrigerator.
  • the traditional refrigerator door is used to open and close the refrigerating compartment of the box.
  • a bottle seat is provided at the inner lining of the refrigerator door for placing bottled items.
  • the composite door refrigerator improves the structure and function of the door, so that the door includes a main door and an auxiliary door, and the main door is used to open and close the refrigeration compartment.
  • the main door defines a door body compartment whose front side is open, and the sub door is used to open and close the door body compartment.
  • the auxiliary door remains closed.
  • the door body compartment can be used for storage, and only the auxiliary door needs to be opened when picking and placing, and the main door does not need to be opened.
  • the composite door structure of the refrigerator facilitates the classification and preservation of storage items and the user's door opening and closing operation, but there are still some problems in actual products.
  • the inner wall of the body compartment is prone to condensation, and these problems hinder the further development of composite door technology.
  • the purpose of the present invention is to solve at least one of the above-mentioned defects in the prior art, and to provide a refrigerator that can effectively reduce the opening frequency of the auxiliary door.
  • Another object of the present invention is to improve the technological sense and user experience of the product.
  • Another object of the present invention is to reduce condensation on the inner wall of the second compartment of the refrigerator
  • the present invention provides a secondary door for a refrigerator, comprising:
  • a box the front side of which is open to define a first compartment
  • a main door mounted on the box body for opening and closing the first compartment, the main door defining a second compartment whose front side is open;
  • a secondary door mounted to the primary door for opening and closing the second compartment, the secondary door including a state adjustable door panel configured to controllably change transparency to allow visibility of the interior structure of the second compartment Adjustable.
  • the state-adjustable door panel is configured to be in a transparent state when there is a human body within a preset distance in front of the auxiliary door; and in a non-transparent state when there is no human body within a preset distance in front of the auxiliary door.
  • the second compartment is divided into a plurality of storage areas;
  • the state-adjustable door panel includes a plurality of adjustment areas whose transparency can be adjusted independently, which are respectively opposite to the plurality of storage areas;
  • the state-adjustable door panel is configured to When the adjustment partition is pressed, the adjustment partition is switched from an opaque state to a transparent state, so that its corresponding storage area is in a visible state.
  • the state-adjustable door panel includes a first glass layer, a second glass layer, and a liquid crystal layer located therebetween, the liquid crystal layer being configured to be transparent when in an energized state and opaque when in an off state condition.
  • the rear wall of the main door is provided with an air supply port and an air return port, both of which are connected to the first room and the second room; the rear wall is hollow, and its interior defines a dew-removing air duct that communicates with the first room.
  • the front surface of the rear wall is provided with a plurality of dew-removing holes connecting the second compartment and the dew-removing air duct; The tuyere returns to the cooling circulation mode of the first room; or it is in the mode of making the air of the first room enter the dew duct, so that part of the air flows through the dew hole to the front surface of the rear wall to remove the condensation on its surface. dew mode.
  • the dew-removing air duct has an inlet and an outlet that communicate with the first compartment; and the refrigerator is configured to keep the inlet and outlet in a closed state and an open state respectively when in the cooling cycle mode; when in the dew-removal mode, Leave both the import and export open.
  • the inlet penetrates the side wall of the air supply port to communicate with the air supply port
  • the outlet penetrates the side wall of the air return port to communicate with the air return port
  • the refrigerator further includes a damper, which is installed at the air outlet and configured to be controllably moved to a cooling supply state in which the inlet is closed and the air outlet is connected, or a dew-removing state in which the inlet is opened and the air outlet is closed. .
  • a damper which is installed at the air outlet and configured to be controllably moved to a cooling supply state in which the inlet is closed and the air outlet is connected, or a dew-removing state in which the inlet is opened and the air outlet is closed.
  • one end of the damper is rotatably installed at the front edge of the inlet, so as to be rotated to a cooling state or a dew removal state.
  • the arrangement density of the dew holes gradually decreases.
  • the auxiliary door includes a state-adjustable door panel, and the transparency of the state-adjustable door panel is adjustable, so that the visibility of the internal structure of the second compartment can be adjusted.
  • the refrigerator can make the state-adjustable door panel in a transparent state. After the user observes the storage situation of the second room, if it is not necessary, he will not open the auxiliary door, so as to avoid opening the auxiliary door and cause the leakage of cold energy, and also prevent the outside air from entering the second room, which will increase the temperature and humidity changes in the second room. Risk of condensation on the interior walls of the compartment.
  • the transparency of the auxiliary door is adjustable, which also makes the overall sense of technology of the refrigerator full, and improves the product quality and user experience.
  • the refrigerator of the present invention when there is no human body at the preset distance in front of the auxiliary door, the state-adjustable door panel is in a non-transparent state, so that the internal structure of the second compartment is invisible, so as to prevent the internal structure from affecting the appearance of the refrigerator.
  • the refrigerator presumes that the user has the possibility to open the door, and switches the state-adjustable door panel to a transparent state, so that the internal structure of the second room is visible, and the storage situation is displayed to the user to avoid Unnecessary door opening operation. It can be seen that, the refrigerator of the present invention can not only obtain the storage condition of the second room without opening the auxiliary door, but also avoids the appearance of the refrigerator from being adversely affected.
  • the refrigerator of the present invention further refines the structure of the state-adjustable door panel, so that the state-adjustable door panel includes a plurality of adjustment partitions whose transparency can be independently adjusted, which are respectively opposite to the multiple storage areas of the second compartment. , when each adjustment partition is pressed, the adjustment partition is switched from a non-transparent state to a transparent state, so that its corresponding storage area is in a visible state. In this way, the user can directly and manually switch the transparency of the state-adjustable door panel, and a plurality of adjustment zones are divided for the user to choose, which improves the user's operational experience.
  • the present invention can effectively remove condensation on the inner wall of the second compartment by specially designing the main door.
  • the present invention makes the rear wall of the main door hollow to define a defrosting air duct, and makes a plurality of dew holes open backward on the front surface of the rear wall.
  • the refrigerator operates the cooling cycle mode, so that the air in the first room normally enters the second room through the air supply port to cool the second room.
  • the refrigerator operates in the dew removal mode, so that the air in the first room enters the dew duct inside the rear wall of the main door.
  • the relative humidity of the air in the dew duct must be lower than the original airflow at the front surface of the rear wall of the main door (the relative humidity of the air near condensation must be high), so the low-humidity air introduced into the dew duct can promote condensation. evaporation.
  • the refrigerator of the present invention when the refrigerator of the present invention operates in the dew removal mode, it does not use traditional methods such as electrically heating the rear wall or introducing hot air, but uses the cold air of the first room to remove dew, and the dew removal process basically does not affect the dew removal process.
  • the normal cooling of the second chamber has an impact and the structure is very cleverly designed.
  • FIG. 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a secondary door according to an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of a state-adjustable door panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a secondary door according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a refrigerator in a cooling cycle mode according to an embodiment of the present invention.
  • Fig. 6 is the enlarged view of A place of Fig. 5;
  • FIG. 7 is a schematic view of the state of the refrigerator shown in FIG. 5 when it is in a dew removal mode
  • FIG. 8 is an enlarged view of part B of FIG. 7 .
  • the refrigerator according to the embodiment of the present invention will be described below with reference to FIGS. 1 to 8 .
  • the orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention .
  • FIG. 1 is a schematic diagram of the principle of a refrigerator according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a secondary door according to an embodiment of the present invention
  • Figure 5 is a schematic diagram of a refrigerator according to an embodiment of the present invention in a cooling cycle mode.
  • the refrigerator may generally include a box body 100 , a main door 200 and a sub-door 300 .
  • the front side of the box 100 is opened to define the first compartment 101 .
  • the main door 200 is installed on the box body 100 for opening and closing the first compartment 101 , and the main door 200 defines a second compartment 201 whose front side is open.
  • the sub door 300 is attached to the main door 200 for opening and closing the second compartment 201 .
  • the auxiliary door 300 includes a state-adjustable door panel 310 .
  • the state adjustable door panel 310 may be mounted on a door frame 320 so that the door frame 320 is used for mounting on the main door 200.
  • the state adjustable door panel 310 is configured to controllably change its transparency so that the visibility of the internal structure of the second compartment 201 can be adjusted. In this way, when the user needs to know what kind of storage items are stored in the second compartment 201, the refrigerator can make the state-adjustable door panel 310 in a transparent state. After the user observes the storage situation of the second room 201, the sub-door 300 is not opened if it is unnecessary, so as to avoid the leakage of cooling energy caused by opening the sub-door 300, and also prevent the outside air from entering the second room 201 causes changes in its temperature and humidity to increase the risk of condensation on the inner wall of the second room 201 . Moreover, the transparency of the auxiliary door 300 is adjustable, which also makes the refrigerator feel full of technology as a whole, and improves the product quality and user experience.
  • adjusting the transparency of the state adjustable door panel 310 includes adjusting it to a transparent state and a non-transparent state.
  • the state-adjustable door panel 310 includes a first glass layer 301 , a second glass layer 302 and a liquid crystal layer 303 located therebetween.
  • the liquid crystal layer 303 is configured to be in a transparent state when it is powered on, and in a transparent state when it is in a power-on state. Opaque state when powered down.
  • the liquid crystal layer 303 includes polymer dispersed liquid crystal, which is also called PDLC (polymer dispersed liquid crystal).
  • the optical axis of the droplet is in a free orientation, and its refractive index does not match the refractive index of the matrix.
  • the orientation of the optical axis of the liquid crystal droplets can be adjusted by applying an electric field, and when the refractive indices of the two are matched, the liquid crystal layer 303 is rendered transparent as a whole.
  • the electric field is removed, the liquid crystal droplets return to the original astigmatism state, so that the liquid crystal layer 303 presents a non-transparent state as a whole.
  • the transparency adjustment of the state-adjustable door panel 310 may also include adjusting it to a transparent state, a non-transparent state, and a translucent state.
  • the state-adjustable door panel 310 is configured to be in a transparent state when a human body exists within a predetermined distance from the front side of the sub-door 300 . When there is no human body within a preset distance in front of the sub-door 300, it is in a non-transparent state.
  • the refrigerator can include a controller and an infrared sensor, the infrared sensor senses the human body, and the controller receives the sensing signal of the infrared sensor to switch the state of the state-adjustable door panel 310 .
  • the refrigerator When the refrigerator is in a normal operation state, that is, when there is no human body at a predetermined distance in front of the auxiliary door 300, the internal structure of the second compartment 201 is invisible, so as to avoid the internal structure from affecting the appearance of the refrigerator.
  • the refrigerator When there is a human body at the preset distance in front of the auxiliary door 300, the refrigerator presumes that the user has the possibility to open the door, and switches the state-adjustable door panel 310 to a transparent state, so that the internal structure of the second room 201 is visible, and the storage situation is displayed to the user. , to avoid unnecessary door opening operation.
  • the refrigerator of the present invention can not only obtain the storage condition of the second compartment 201 without opening the auxiliary door 300, but also avoid adverse effects on the appearance of the refrigerator.
  • the second compartment 201 can be divided into multiple storage areas, for example, multiple shelves are provided, and the space above each shelf constitutes a storage area.
  • the state-adjustable door panel 310 includes a plurality of adjustment zones 311 , 312 and 313 whose transparency can be independently adjusted.
  • the plurality of adjustment zones 311 , 312 and 313 are respectively positioned opposite to the plurality of storage areas.
  • the state-adjustable door panel is configured to switch the adjustment partition from an opaque state to a transparent state when each adjustment partition is pressed, so that its corresponding storage area is in a visible state. In this way, the user can selectively observe the storage situation of some storage areas in the second room.
  • the transparency switching of the state-adjustable door panel 310 is operated by the user, which improves the user's operating experience.
  • the main door 200 can be rotatably mounted on the box body 100 at the front side of the box body 100 , the front side of the main door 200 is opened to define the aforementioned second compartment 201 , and the auxiliary door 300 is located at the main door.
  • the front side of 200 is rotatably attached to the main door 200 .
  • the refrigerator can be refrigerated by vapor compression refrigeration cycle system, semiconductor refrigeration system or other means.
  • the various compartments inside the refrigerator can be divided into refrigerating compartment, freezing compartment and changing room.
  • the temperature in the refrigerator is generally controlled between 2°C and 10°C, preferably 4°C to 7°C.
  • the temperature range in the freezer is generally controlled at -22°C to -14°C.
  • the variable temperature chamber can be adjusted between -18°C to 8°C to achieve a variable temperature effect.
  • the optimal storage temperature for different types of items is different, and the storage compartments suitable for storage are also different.
  • fruit and vegetable foods are suitable for storage in the refrigerator compartment, and meat foods are suitable for storage in the freezer compartment.
  • the first compartment 101 in the embodiment of the present invention is preferably a refrigerator compartment.
  • the problem of condensation on the inner wall of the compartment defined by the door body is relatively serious.
  • the embodiment of the present invention specifically designs the main door 200 to dew the front surface of the rear wall 211 of the second compartment 201 in a targeted manner.
  • FIG. 6 is an enlarged view of part A of FIG. 5 ;
  • FIG. 7 is a schematic view of the state of the refrigerator shown in FIG. 5 when it is in a dew removal mode;
  • FIG. 8 is an enlarged view of part B of FIG. 7 .
  • the rear wall 211 of the main door 200 is provided with an air supply port 212 and an air return port 214 , both of which are connected to the first compartment 101 and the second compartment 201 .
  • the rear wall 211 of the main door 200 is hollow, and a dew duct 215 that communicates with the first compartment 101 is defined inside the rear wall 211 . That is, the hollow space of the rear wall 211 constitutes the dew removal duct 215 .
  • the front surface of the rear wall 211 is provided with a plurality of dew removal holes 2154 which communicate with the second compartment 201 and the dew removal air duct 215 .
  • the refrigerator is configured to be in a cooling cycle mode in which the air of the first room 101 enters the second room 201 through the air supply port 212 and then returns to the first room 101 through the air return port 214, so as to utilize the cold air of the first room 101
  • the second compartment 201 is refrigerated, as shown in FIGS. 5 and 6 .
  • the refrigerator is in the dew-removal mode in which the air of the first compartment 101 enters the dew-removal air duct 215 , so that part of the air flows through the dew-removal hole 2154 to the front surface of the rear wall 211 to remove the condensation on the surface thereof, as shown in FIG. 7 . and Figure 8.
  • the refrigerator is in the aforementioned cooling cycle mode in a normal state.
  • the refrigerator can be controlled to operate the aforementioned dew removal mode, so that the first compartment 101 The air enters the dew removal air duct 215 inside the rear wall 211 of the main door 200 , so that part of the air flows through the dew removal hole 2154 to the front surface of the rear wall 211 .
  • the air introduced into the dew duct 215 Low humidity air can promote the evaporation of condensation and complete the dew removal process.
  • the refrigerator can be controlled to switch to the cooling cycle mode.
  • the switching timing of the cooling cycle mode and the dew removal mode can be automatically controlled by the refrigerator, for example, timing switching or automatic switching of the refrigerator operating mode according to the detection result of the humidity sensor. It can also be controlled manually. For example, when the user finds that dew removal is required or needs to be stopped, the refrigerator operation mode can be manually switched.
  • the conventional method such as electrically heating the rear wall 211 or introducing hot air is not adopted, and the cold air of the first room 101 is still used for dew removal, and the dew removal process is basically It will not affect the normal cooling of the second room 201, and the structure design is very clever.
  • the dew duct 215 may have an inlet 2151 and an outlet 2152 communicating with the first chamber 101 , so that the dew duct 215 and the first chamber 101 can be connected between the dew duct 215 and the first chamber 101 .
  • An air duct circulation is formed between them, so as to prevent the airflow used for dew removal from accumulating in the vicinity of the dew removal air duct 215 and the dew removal hole 2154 and unable to circulate, thereby affecting the dew removal effect.
  • the refrigerator is also configured to keep the inlet 2151 and outlet 2152 in a closed state and an open state, respectively, when in the cooling cycle mode; and in an open state when in the dew removal mode.
  • the inlet 2151 of the dew duct 215 needs to be closed.
  • the inlet 2151 of the dew duct 215 is opened. Since the conduction and closing of the dew duct 215 has been controlled by controlling the opening and closing of the inlet 2151 and the outlet 2152 of the dew duct 215, there is no need to control the outlet 2152 of the dew duct 215.
  • the outlet 2152 of the dew duct 215 is in a normally open state and does not need to be controlled, so as to simplify the structure and control of the refrigerator.
  • the inlet 2151 of the dew air duct 215 can penetrate the side wall of the air supply port 212 to communicate with the air supply port 212 . That is, the dew-removing air duct 215 communicates with the first compartment 101 by using the air supply port 212 , and there is no need for an additional opening on the rear wall 211 .
  • the outlet 2152 of the dew duct 215 can also penetrate the side wall of the air return port 214 to communicate with the air return port 214 . That is, the dew-removing air duct 215 communicates with the first compartment 101 through the air return port 214 , and there is no need for an additional opening on the rear wall 211 .
  • This design structure is very ingenious, which simplifies the opening structure of the rear wall 211 of the main door 200, so that the rear surface of the rear wall 211 of the main door 200 only needs to directly open the air supply port 212 and the air return port 214.
  • the air supply port 212 and the air return port 214 are located at the top and bottom of the rear wall 211 , respectively.
  • the refrigerator When the refrigerator is in the cooling cycle mode, after the cold air flows into the second compartment 201 from the air supply port 212, it has a sinking effect due to its relatively high density, and will flow downward to refrigerate each height area of the second compartment 201 in turn.
  • the air temperature gradually increases and then flows back to the first compartment 101 from the air return port 214 at the bottom of the second compartment 201 . In this way, a smoother air path circulation is formed, and the cooling effect of the second chamber 201 is improved.
  • the cold air enters the dew removal air duct 215 from the top of the dew removal air duct 215, which is also more favorable for downward flow, so that the dew removal air duct 215 has better circulation, which is beneficial to speed up the dew removal process.
  • the refrigerator may further include a damper 216, which is installed at the air supply port 212 and configured to be controllably moved to a cooling state in which the inlet 2151 is closed and the air supply port 212 is connected (as shown in FIG. 6), or move to the dew-removing state in which the inlet 2151 is opened and the air supply port 212 is closed (as shown in FIG. 8 ).
  • This embodiment effectively utilizes the advantage that the inlet 2151 is connected with the air supply port 212, and uses a damper 216 to control the air supply port 212 and the inlet 2151 at the same time, which simplifies the control of the air in and out, and the design is very ingenious.
  • one end of the damper 216 can be rotatably installed at the front edge of the inlet 2151 to rotate to a cooling state (as shown in FIG. 6 ) or a dew removal state (as shown in FIG. 8 ).
  • the operation mode switching of the refrigerator can be completed only by controlling the rotation of one damper 216 without setting complex motion mechanism and control logic, and the structure and control are greatly simplified.
  • the refrigerator further includes a fan 230 , and the fan 230 is located at the air supply port 212 , so as to promote the air of the first compartment 101 to flow to the air supply port 212 to speed up the cooling cycle speed.
  • the fan 230 is also used to promote the air in the first compartment 101 to flow to the dew removal air duct 215.
  • the embodiment of the present invention specifically designs the arrangement density of the dew holes 2154 .
  • the arrangement density of the dew holes 2154 is gradually reduced to match the rear of the main door 200 .
  • the changing trend of condensation degree at different positions of the wall 211 reduces excessive and meaningless openings.
  • the opening area of the rear wall 211 of the main door 200 may be spread over the entire front surface of the rear wall 211 to achieve sufficient dew removal, or may be spread over a part of the front surface of the rear wall 211 .
  • the porosity of the dew holes 2154 may be 30% ⁇ 80%.
  • the detox holes 2154 may be arranged in a matrix or other arrangement.
  • the dew hole 2154 may be circular, oval, square or other shapes.
  • the dew-removing holes 2154 are elongated holes whose length direction is parallel to the airflow direction of the dew-removing air duct 215 . This structure is conducive to destroying the integrity of dewdrops and accelerating the dispersion and evaporation of dewdrops.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Refrigerator Housings (AREA)

Abstract

一种冰箱，其包括箱体，其前侧敞开以限定出第一间室；主门，安装于箱体，以用于开闭第一间室，主门限定有前侧敞开的第二间室；和副门，安装于主门，以用于开闭第二间室，副门包括状态可调门板，状态可调门板配置成可受控地改变透明度，以使第二间室内部结构的可见程度可调。本发明的冰箱可有效减小副门的打开频率，且提升了产品科技感和用户体验。

Description

冰箱 技术领域
本发明涉及冷藏冷冻技术领域，特别涉及一种冰箱。
背景技术
随着技术的进步和人们生活水平的提升，用户对于冰箱的要求越来越高。传统的仅设置冷藏室、冷冻室和变温室的冰箱已经不能满足用户对于存储空间多样化的需求。
近年来，冰箱领域出现了一种复合门体技术。众所周知，传统的冰箱门体用于开闭箱体的制冷间室，最多在冷藏门体的内衬处设置瓶座用于放置瓶装物。而复合门体的冰箱则对门体结构和功能进行改进，使门体包括主门和副门，主门用于开闭制冷间室。并且，主门限定出前侧敞开的门体间室，副门用于开闭门体间室。主门转动过程中，副门保持关闭状态。门体间室可供放置存储物，且取放时仅需打开副门，无需打开主门。
冰箱的复合门结构方便了存储物的分类保存和用户的开关门操作，但是其在实际产品中还是存在一些问题，例如副门开门过于频繁，使得门体间室冷量损耗较多，以及门体间室的内壁容易凝露，这些问题阻碍了复合门技术的进一步发展。
发明内容
本发明的目的在于至少解决现有技术存在的上述缺陷之一，提供一种可有效减小副门的打开频率的冰箱。
本发明的另一目的是要提升产品的科技感和用户体验。
本发明的又一目的是要减少冰箱第二间室内壁的凝露
特别地，本发明提供了一种用于冰箱的副门，其包括：
箱体，其前侧敞开以限定出第一间室；
主门，安装于箱体，以用于开闭第一间室，主门限定有前侧敞开的第二间室；和
副门，安装于主门，以用于开闭第二间室，副门包括状态可调门板，状态可调门板配置成可受控地改变透明度，以使第二间室内部结构的可见程度可调。
可选地，状态可调门板配置成在副门前侧预设距离内存在人体时，处于透明状态；在副门前侧预设距离内不存在人体时，处于非透明状态。
可选地，第二间室划分多个储物区；状态可调门板包括透明度可独立调节的多个调节分区，其分别与多个储物区位置相对；状态可调门板配置成在每个调节分区被按压时，使该调节分区由非透明状态切换为透明状态，以使其对应的储物区处于可见状态。
可选地，状态可调门板包括第一玻璃层、第二玻璃层和位于两者之间的液晶层，液晶层配置成在处于通电状态时处于透明状态，在处于断电状态时处于非透明状态。
可选地，主门的后壁开设送风口和回风口，两者均连通第一间室和第二间室；后壁为中空状，其内部限定有连通第一间室的除露风道，后壁前表面向后开设有多个连通第二间室和除露风道的除露孔；冰箱配置成：可处于使第一间室空气经送风口进入第二间室，再经回风口返回第一间室的供冷循环模式；或处于使第一间室空气进入除露风道，以使部分气流经除露孔流至后壁前表面处，以除去其表面凝露的除露模式。
可选地，除露风道具有连通第一间室的进口和出口；且冰箱配置成在处于供冷循环模式时，使进口和出口分别处于关闭状态和打开状态；在处于除露模式时，使进口和出口均处于打开状态。
可选地，进口穿透送风口的侧壁以连通送风口，出口穿透回风口的侧壁以连通回风口。
可选地，冰箱还包括风门，其安装于送风口处，并配置成可受控地运动至关闭进口且导通送风口的供冷状态，或运动至打开进口且关闭送风口的除露状态。
可选地，风门的一端可转动地安装于进口前边缘处，以便转动至供冷状态或除露状态。
可选地，在从送风口至回风口的方向上，除露孔的排列密度逐渐减小。
本发明的冰箱中，副门包括状态可调门板，状态可调门板的透明度可调，从而使第二间室内部结构的可见程度可调。如此一来，当用户需要了解第二间室的储物情况时，冰箱可使状态可调门板处于透明状态。用户观察到第二间室的储物情况之后，如无必要便不再打开副门，避免打开副门导致冷量泄漏，也避免外界空气进入第二间室导致其温湿度变化增大第二间室内壁的凝 露风险。而且，副门的透明度可调，也使冰箱整体科技感十足，提升了产品档次和用户体验。
进一步地，本发明的冰箱在副门前侧预设距离不存在人体时，使状态可调门板处于非透明状态，以使第二间室内部结构不可见，以避免内部结构影响冰箱外观。而在副门前侧预设距离存在人体时，冰箱即推测用户有开门可能，使状态可调门板切换为透明状态，以使第二间室内部结构可见，将存储情况展现给用户，以避免不必要的开门操作。由此可见，本发明的冰箱不仅可在不打开副门前提下获取第二间室的存储情况，还避免了冰箱外观受到不利影响。
进一步地，本发明的冰箱对状态可调门板的结构进行进一步细化，使状态可调门板包括透明度可独立调节的多个调节分区，其分别与第二间室的多个储物区位置相对，在每个调节分区被按压时，使该调节分区由非透明状态切换为透明状态，以使其对应的储物区处于可见状态。这样一来，使得状态可调门板的透明度的切换由用户直接手动切换，且划分了多个调节分区供用户选择，提升了用户的操作体验性。
进一步地，本发明通过对主门进行特别设计，能有效去除第二间室的内壁的凝露。具体地，本发明特别使主门后壁为中空状，限定出除霜风道，并使后壁前表面向后开设有多个除露孔。第二空间需要正常制冷时，冰箱运行供冷循环模式，使第一间室空气正常经送风口进入第二间室，对第二间室进行制冷。当第二间室后壁面(也就是主门后壁的前表面)产生凝露需要除露时，冰箱运行除露模式，使第一间室空气进入主门后壁内部的除露风道，以使部分气流经除露孔流至后壁前表面处。除露风道的空气的相对湿度必然低于主门后壁前表面处的原有气流(凝露附近空气相对湿度必然很高)，故引入除露风道的低湿度空气能够促进凝露的蒸发。
并且，本发明的冰箱在运行除露模式时，并未采用对后壁进行电加热或者引入热空气等传统方式，而是利用第一间室的冷风进行除露，除露进程基本不会对第二间室的正常制冷产生影响，结构设计非常巧妙。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是本发明一个实施例的冰箱的原理示意图；
图2是本发明一个实施例的副门的结构示意图；
图3是本发明一个实施例的状态可调门板的截面示意图；
图4是本发明另一实施例的副门的结构示意图；
图5是本发明一个实施例的冰箱处于供冷循环模式的示意图；
图6是图5的A处放大图；
图7是图5所示冰箱在处于除露模式时的状态示意图；
图8是图7的B处放大图。
具体实施方式
下面参照图1至图8来描述本发明实施例的冰箱。其中，“前”、“后”、“上”、“下”、“顶”、“底”、“内”、“外”、“横向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
图1是本发明一个实施例的冰箱的原理示意图；图2是本发明一个实施例的副门的结构示意图；图3是本发明一个实施例的状态可调门板的截面示意图；图4是本发明另一实施例的副门的结构示意图；图5是本发明一个实施例的冰箱在处于供冷循环模式的示意图。
如图1至图5所示，本发明实施例的冰箱一般性地可包括箱体100、主门200和副门300。箱体100的前侧敞开以限定出第一间室101。主门200安装于箱体100，以用于开闭第一间室101，主门200限定出前侧敞开的第二间室201。副门300安装于主门200，以用于开闭第二间室201。
发明人发现，由于用户很难对存储物在冰箱中的具体存放位置有特别清晰的记忆，导致用户在想要取出某些存储物时，往往会逐个打开各门体。而复合门结构的冰箱在主门200外额外设置了副门300，使得冰箱储物位置更多，门数量更多，使总开门次数进一步增加，引发冷量损耗严重等各方面问题。而本发明实施例中，如图2所示，副门300包括状态可调门板310。状 态可调门板310可安装于一个门框架320上，使门框架320用于安装于主门200。状态可调门板310配置成可受控地改变其透明度，以使第二间室201的内部结构的可见程度可调。如此一来，在用户需要了解第二间室201内存放了何种存储物时，冰箱可使状态可调门板310处于透明状态。在用户观察到第二间室201的储物情况后，如无必要便不再打开副门300，以避免了因开启副门300导致的冷量泄漏，也避免了外界空气进入第二间室201导致其温湿度变化增大第二间室201内壁凝露的风险。而且，副门300的透明度可调，也使冰箱整体科技感十足，提上了产品档次和用户体验。
在一些实施例中，状态可调门板310的透明度调节包括将其调节为透明状态和非透明状态。如图3所示，状态可调门板310包括第一玻璃层301、第二玻璃层302和位于两者之间的液晶层303，液晶层303配置成在处于通电状态时处于透明状态，在处于断电状态时处于非透明状态。液晶层303包括聚合物分散液晶，聚合物分散液晶又称为PDLC(polymer dispersed liquid crystal)，是液晶以微米量级的小微滴分散在有机固态聚合物基体内，由于由液晶分子构成的小微滴的光轴处于自由取向，其折射率与基体的折射率不匹配，当光通过基体时被微滴强烈散射而呈不透明的乳白状态或半透明状态。施加电场可调节液晶微滴的光轴取向，当两者折射率相匹配时，使液晶层303整体呈现透明态。除去电场，液晶微滴又恢复最初的散光状态，使液晶层303整体呈现非透明状态。
在一些替代性实施例中，也可使状态可调门板310的透明度调节包括将其调节为透明状态、非透明状态以及半透明状态。
在一些实施例中，状态可调门板310配置成在副门300前侧预设距离内存在人体时，处于透明状态。在副门300前侧预设距离内不存在人体时，处于非透明状态。具体地，可使冰箱包括控制器和红外传感器，由红外传感器对人体进行感测，控制器接收红外传感器的感测信号，对状态可调门板310的状态进行切换控制。
冰箱处于常规运行状态，也就是在副门300前侧预设距离不存在人体时，使第二间室201的内部结构不可见，以避免内部结构影响冰箱外观。而在副门300前侧预设距离存在人体时，冰箱即推测用户有开门可能，使状态可调门板310切换为透明状态，以使第二间室201内部结构可见，将存储情况展现给用户，以避免不必要的开门操作。根据通常操作习惯，用户进入冰箱前 侧1m或更小范围内时，开门可能性很大，故此该预设距离可设置为小于1m的数值。由此，本发明的冰箱不仅可在不打开副门300前提下获取第二间室201的存储情况，还避免了冰箱外观受到不利影响。
在另一些实施例中，如图4所示，可使第二间室201划分多个储物区，例如设置多层搁物架，每个搁物架上方空间构成一个储物区。使状态可调门板310包括透明度可独立调节的多个调节分区311、312、313。多个调节分区311、312、313分别与多个储物区位置相对。状态可调门板配置成在每个调节分区被按压时，使该调节分区由非透明状态切换为透明状态，以使其对应的储物区处于可见状态。这样一来，用户可选择性地观察第二间室的部分储物区的储物情况。而且状态可调门板310的透明度切换由用户操作，提升了用户的操作体验性。
在一些实施例中，可使主门200在箱体100前侧可转动地安装于箱体100，主门200前侧敞开以限定出前述的第二间室201，使副门300在主门200前侧可转动地安装于主门200。主门200打开时，用户从第一间室101存取物品。主门200关闭，副门300打开时，用户可从第二间室201存取物品。
冰箱可通过蒸气压缩制冷循环系统、半导体制冷系统或其他方式进行制冷。根据制冷温度的不同，冰箱内部的各间室可划分为冷藏室、冷冻室和变温室。例如冷藏室内的温度一般控制在2℃至10℃之间，优先为4℃至7℃。冷冻室内的温度范围一般控制在-22℃至-14℃。变温室可在-18℃至8℃之间调节，以实现变温效果。不同种类的物品的最佳存储温度并不相同，适宜存放的储物间室也并不相同。例如果蔬类食物适宜存放于冷藏室，而肉类食物适宜存放于冷冻室。本发明实施例的第一间室101优选为冷藏室。
现有的复合门冰箱中，门体限定的间室内壁凝露问题比较严重。发明人认识到，由于主门200的后壁211临近第一间室101，与第一间室101内的空气可通过热传导进行传热，故该后壁211前表面的温度相比第二间室201的其他壁面的温度要更低，更容易产生凝露。
基于上述认识，本发明实施例通过对主门200进行特别设计，针对性地对第二间室201的后壁211的前表面进行除露。
图6是图5的A处放大图；图7是图5所示冰箱在处于除露模式时的状态示意图；图8是图7的B处放大图。
如图5至图8所示，主门200的后壁211开设送风口212和回风口214，两者均连通第一间室101和第二间室201。并且，主门200的后壁211为中空状，其内部限定有连通第一间室101的除露风道215。即，后壁211的中空空间构成除露风道215。后壁211的前表面向后开设有多个连通第二间室201和除露风道215的除露孔2154。冰箱配置成：可处于使第一间室101空气经送风口212进入第二间室201，再经回风口214返回第一间室101的供冷循环模式，以利用第一间室101的冷气对第二间室201进行制冷，如图5和图6。或者，冰箱处于使第一间室101空气进入除露风道215，以使部分气流经除露孔2154流至后壁211前表面处，以除去其表面凝露的除露模式，如图7和图8。
本发明实施例中，冰箱在通常状态下处于前述的供冷循环模式。但是当因为开关门操作引入湿空气或者放入高湿存储物后，主门200的后壁211前表面出现较多凝露时候，可控制冰箱运行前述的除露模式，使第一间室101空气进入主门200的后壁211内部的除露风道215，以使部分气流经除露孔2154流至后壁211前表面处。由于除露风道215的空气的相对湿度必然低于主门200后壁211前表面处的原有气流的相对湿度(凝露附近空气相对湿度必然很高)，故引入除露风道215的低湿度空气能够促进凝露的蒸发，完成除露过程。当完成除露后，可控制冰箱切换至供冷循环模式。
供冷循环模式和除露模式的切换时机可由冰箱自动控制，例如定时切换或者根据湿度传感器的检测结果自动切换冰箱运行模式。也可人工控制，例如用户发现需要除露或者需要停止除露时可手动切换冰箱运行模式。
本发明实施例的冰箱在运行除露模式时，也并未采用对后壁211进行电加热或者引入热空气等传统方式，依然是利用第一间室101的冷风进行除露，除露进程基本不会对第二间室201的正常制冷产生影响，结构设计非常巧妙。
在一些实施例中，如图5和图7所示，可使除露风道215具有连通第一间室101的进口2151和出口2152，以便在除露风道215和第一间室101之间形成风路循环，避免用于除露的气流淤积在除露风道215和除露孔2154附近无法流通，而影响除露效果。此外，冰箱还配置成在处于供冷循环模式时，使进口2151和出口2152分别处于关闭状态和打开状态；在处于除露模式时，使进口2151和出口2152均处于打开状态。也就是说，在供冷循环模式时，仅需关闭除露风道215的进口2151。在处于除露模式时，打开除露风 道215的进口2151。由于已经通过控制除露风道215的进口2151和出口2152的开闭来控制除露风道215的导通和封闭，故无需对除露风道215的出口2152进行控制。在两种模式下，除露风道215的出口2152处于常开状态，不需进行控制，以简化冰箱结构和控制。
在一些实施例中，如图5和图7所示，可使除露风道215的进口2151穿透送风口212的侧壁以连通送风口212。即，除露风道215借用送风口212与第一间室101实现连通，无需再在后壁211另外开口。也可使除露风道215的出口2152穿透回风口214的侧壁以连通回风口214。即，除露风道215借用回风口214与第一间室101实现连通，无需再在后壁211另外开口。这种设计结构非常巧妙，简化了主门200后壁211的开孔结构，使主门200后壁211后表面仅需直接开设送风口212和回风口214即可。
在一些实施例中，如图5和图7所示，使送风口212和回风口214分别位于后壁211的顶部和底部。冰箱处于供冷循环模式时，冷空气从送风口212流入第二间室201后，因密度相对较大具有下沉作用，将向下流动并依次对第二间室201各高度区域进行制冷，空气温度逐渐升高后再从第二间室201底部的回风口214流回第一间室101。这样形成了更加通畅的风路循环，提升了第二间室201的制冷效果。在冰箱处于除露模式时，冷空气从除露风道215的顶部进入除露风道215，也更利于向下流动，使除露风道215流通性更好，利于加快除露进程。
如图6和图8所示，冰箱还可包括风门216，风门216安装于送风口212处，并配置成可受控地运动至关闭进口2151且导通送风口212的供冷状态(如图6)，或运动至打开进口2151且关闭送风口212的除露状态(如图8)。本实施例有效利用了进口2151与送风口212相连通的优势，利用一个风门216同时控制送风口212和进口2151，简化了进出风控制，设计非常巧妙。
具体地，如图6和图8所示，可使风门216的一端可转动地安装于进口2151前边缘处，以便转动至供冷状态(如图6)或除露状态(如图8)。本发明实施例中，无需设置复杂的运动机构和控制逻辑，仅控制一个风门216的转动，就能完成冰箱运行模式的切换，结构和控制都极大简化。
在一些实施例中，如图5至图8所示，冰箱还包括风机230，风机230位于送风口212处，以用于促使第一间室101的空气流向送风口212，以加快供冷循环速度。当然，对于进口2151与送风口212连通的方案而言，风 机230还用于促使第一间室101的空气流向除露风道215。
发明人认识到，越接近送风口212，主门200的后壁211产生的凝露越多，越接近回风口214，凝露越少。为此，本发明实施例特别对除露孔2154的排列密度进行设计，在从送风口212至回风口214的方向上，使除露孔2154的排列密度逐渐减小，以匹配主门200后壁211不同位置凝露程度的变化趋势，减少过多无意义的开孔。可使主门200后壁211的开孔区域遍布整个后壁211前表面，以实现充分除露，也可使其遍布后壁211前表面的一部分区域。除露孔2154的开孔率可为30％～80％。除露孔2154可为矩阵式排布或其他排布。除露孔2154可为圆形、椭圆形、方形或其他形状。优选地，使除露孔2154为长度方向平行于除露风道215气流方向的长条状孔，这种结构利于破坏露珠的完整性，加快露珠的分散和蒸发。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种冰箱，包括：
    箱体，其前侧敞开以限定出第一间室；
    主门，安装于所述箱体，以用于开闭所述第一间室，所述主门限定有前侧敞开的第二间室；和
    副门，安装于所述主门，以用于开闭所述第二间室，所述副门包括状态可调门板，所述状态可调门板配置成可受控地改变透明度，以使所述第二间室内部结构的可见程度可调。
  2. 根据权利要求1所述的冰箱，其中，
    所述状态可调门板配置成在所述副门前侧预设距离内存在人体时，处于透明状态；在所述副门前侧预设距离内不存在人体时，处于非透明状态。
  3. 根据权利要求1所述的冰箱，其中，
    所述第二间室划分多个储物区；
    所述状态可调门板包括透明度可独立调节的多个调节分区，其分别与所述多个储物区位置相对；
    所述状态可调门板配置成在每个所述调节分区被按压时，使该调节分区由非透明状态切换为透明状态，以使其对应的所述储物区处于可见状态。
  4. 根据权利要求1所述的冰箱，其中，
    所述状态可调门板包括第一玻璃层、第二玻璃层和位于两者之间的液晶层，所述液晶层配置成在处于通电状态时处于透明状态，在处于断电状态时处于非透明状态。
  5. 根据权利要求1所述的冰箱，其中，
    所述主门的后壁开设送风口和回风口，两者均连通所述第一间室和所述第二间室；所述后壁为中空状，其内部限定有连通所述第一间室的除露风道，所述后壁前表面向后开设有多个连通所述第二间室和所述除露风道的除露孔；所述冰箱配置成：
    可处于使所述第一间室空气经所述送风口进入所述第二间室，再经所述 回风口返回所述第一间室的供冷循环模式；或
    处于使所述第一间室空气进入所述除露风道，以使部分气流经所述除露孔流至所述后壁前表面处，以除去其表面凝露的除露模式。
  6. 根据权利要求5所述的冰箱，其中，
    所述除露风道具有连通所述第一间室的进口和出口；且
    所述冰箱配置成在处于所述供冷循环模式时，使所述进口和所述出口分别处于关闭状态和打开状态；在处于所述除露模式时，使所述进口和所述出口均处于打开状态。
  7. 根据权利要求6所述的冰箱，其中，
    所述进口穿透所述送风口的侧壁以连通所述送风口，所述出口穿透所述回风口的侧壁以连通所述回风口。
  8. 根据权利要求7所述的冰箱，还包括：
    风门，其安装于所述送风口处，并配置成可受控地运动至关闭所述进口且导通所述送风口的供冷状态，或运动至打开所述进口且关闭所述送风口的除露状态。
  9. 根据权利要求8所述的冰箱，其中，
    所述风门的一端可转动地安装于所述进口前边缘处，以便转动至所述供冷状态或所述除露状态。
  10. 根据权利要求5所述的冰箱，其中，
    在从所述送风口至所述回风口的方向上，所述除露孔的排列密度逐渐减小。
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