CN113028721A

CN113028721A - Door assembly and refrigeration equipment

Info

Publication number: CN113028721A
Application number: CN202110485066.4A
Authority: CN
Inventors: 陈荣海; 崔向前; 解卫浩; 孙源; 祝鑫; 覃元成
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-06-25
Anticipated expiration: 2041-04-30
Also published as: CN113028721B

Abstract

The invention relates to the technical field of refrigeration, and provides a door assembly and refrigeration equipment. The door assembly includes: the door leaf comprises an outer door body and an inner door body, the inner door body is suitable for being rotatably connected to a part to be installed, and the outer door body is suitable for moving towards the opening side or the hinged side of the inner door body relative to the inner door body so as to switch between a sealing position and an avoiding position; the heat insulation air bag is arranged on the opening side of the door leaf, and two ends of the heat insulation air bag are respectively connected with the inner door body and the outer door body along the direction of the outer door body moving towards the inner door body; the door leaf is adapted to switch between a closed state and an open state: in the closed state, the outer door body is in the sealing position and the heat insulation air bag is stretched; in the process of switching the door leaf between the closed state and the open state, the outer door body is in the avoiding position and the heat insulation air bag is compressed. The position of the outer door body is switched, so that the sealing effect of the door assembly can be ensured, and the door leaf can be prevented from being interfered. And the thermal insulation air bag can fill the movement gap, so that the performance of the door assembly is ensured.

Description

Door assembly and refrigeration equipment

Technical Field

The invention relates to the technical field of refrigeration, in particular to a door assembly and refrigeration equipment.

Background

In the side-by-side combination refrigerator in the prior art, the door leaf is closed through the rotation of shaft hole sleeves arranged on the door leaf and the refrigerator body. In order to prevent the situation of motion interference between the door leaves of the split door in the rotating process of opening and closing the door, when the door leaves are closed, a gap with the difference of 4-10 mm is designed between the two door leaves. The existence of the gap not only causes the leakage of the cold air, but also affects the beauty of the refrigerator. In view of the above, the following means are proposed in the prior art to solve the above problems:

increase the special upset roof beam structure and avoid revealing of air conditioning, but the increase of upset roof beam can lead to because the maloperation and appear upset roof beam and another door body striking and the problem that can not close the door smoothly when closing the door body.

Or, a door seal strip can be arranged at the door gap between the two door leaves to prevent cold air in the refrigerator from leaking outwards, but the sealing effect at the door gap of the refrigerator is poor only by means of the attachment of the door seal strip. In order to ensure the sealing effect of the door seal, the technical scheme that the refrigerator compartment is divided by using the partition plate, and the door seal and the partition plate are attached to improve the sealing performance is provided. But the setting of baffle makes the effective volume rate of side by side combination refrigerator reduce easily, and its setting also can make the inside unable big volume object of storage of refrigerator moreover, has reduced the flexibility that the article were put in the refrigerator.

Moreover, the gap between the two door leaves cannot be eliminated by the scheme, so that the appearance of the refrigerator is more attractive.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, the invention proposes a door assembly which makes it possible to eliminate the gap on the opening side of the door leaf in the closed state. When this door subassembly is applicable to when running from opposite directions the door, the gap between the door leaf that sets up relatively under the closed condition can reduce or even eliminate completely, and door subassembly convenient operation to this door subassembly does not have any harmful effects to its division of inner space and space utilization who corresponds. In addition, the door assembly can avoid the influence of the movement clearance of the opening sides of the outer door body and the inner door body on the performance of the door assembly.

The invention also provides a refrigerating device.

A door assembly in accordance with an embodiment of the first aspect of the present invention includes:

the door leaf comprises an outer door body and an inner door body positioned inside the outer door body, the inner door body is suitable for being rotatably connected to a part to be installed, and the outer door body is suitable for moving towards the opening side or the hinged side of the inner door body relative to the inner door body so as to switch between a sealing position and an avoiding position;

the heat insulation air bag is arranged on the opening side of the door leaf and is arranged along the direction of the outer door body moving relative to the inner door body, the first end of the heat insulation air bag is connected with the inner door body, and the second end of the heat insulation air bag is connected with the outer door body;

the door leaf is adapted to switch between a closed state and an open state: in the closed state, the outer door body is in the sealed position and the insulating bladder is stretched; in the process of switching the door leaf between the closed state and the open state, the outer door body is in the avoiding position and the heat insulation air bag is compressed.

According to the door assembly provided by the embodiment of the invention, the door leaf comprises the inner door body and the outer door body, and the outer door body can move relative to the inner door body, so that when the door leaf is in a closed state, the outer door body is moved to a sealing position or kept at the sealing position in order to ensure the sealing effect of the door leaf. When the door leaf needs to be opened and closed, the outer door body is made to move to the avoiding position or is kept at the avoiding position in order to prevent the door leaf from being interfered at the moment. On this basis, owing to be provided with thermal-insulated gasbag at the side of opening of door leaf, can fill the movement clearance between the outer door body and the interior door body through thermal-insulated gasbag's setting, and then guarantee the performance of door subassembly. When the door assembly is applied to the refrigerator, the dependence of the traditional refrigerator on the overturning beam can be changed, and the defect that the storage space is divided inflexibly because the partition plate is arranged on the refrigerator body is overcome. And the setting of thermal-insulated gasbag can form the protector that prevents that cold air from revealing, and then reduces and even avoids the refrigerator inside and the external world to carry out the heat exchange to prevent to produce the condensation on the outer door body surface of door leaf.

According to one embodiment of the present invention, the heat-insulating air bags are provided in plural numbers and spaced apart from each other in a thickness direction of the door leaf.

According to an embodiment of the present invention, the heat insulation air bag is provided in a passage between the outer door body and the inner door body, the passage extending in a thickness direction of the door leaf and including a curved section, the passage being wider as the outer door body moves toward an opening side of the inner door body and being narrower as the outer door body moves toward a hinge side of the inner door body.

According to an embodiment of the invention, the channel further comprises straight line sections at two ends of the curved section, and the straight line sections at two ends of the curved section are provided with the heat insulation air bags.

According to one embodiment of the invention, one of the outer door body and the inner door body is formed with a groove, the other is formed with a protrusion, and the curved section is formed between the groove and the protrusion.

According to one embodiment of the invention, the protrusion is internally provided with an insulating foam.

According to one embodiment of the invention, the channel is provided with a heating element.

According to one embodiment of the invention, the heating element is a thin film heating sheet attached to the inner surface of the channel.

According to an embodiment of the invention, the door assembly is a split door assembly, the door leaf comprising a split door leaf.

According to one embodiment of the invention, a door seal assembly is arranged on the opening side of the split door leaf, the door seal assembly comprises a pair of opposite-side door seals extending along the thickness direction of the split door leaf and a main door seal extending along the width direction of the split door leaf, and the opposite-side door seals and the main door seal are connected through an elastic expansion piece.

According to one embodiment of the invention, the door seal assembly is mounted at a corner position of the side-by-side door leaf, and the side-by-side door seal is disposed near an inner surface of the side-by-side door leaf.

According to one embodiment of the invention, the suction side door seal and the main door seal are both provided with barbs, the barbs of the suction side door seal are mounted on the outer door body, and the barbs of the main door seal are mounted on the inner door body.

According to one embodiment of the invention, a driving piece and a first elastic resetting piece are arranged between the inner door body and the outer door body;

in the process of switching the door leaf between the closed state and the open state, the driving piece drives the outer door body to move to the avoiding position; in the closed state, the first elastic resetting piece drives the outer door body to move to the sealing position; or,

in the closed state, the driving piece drives the outer door body to move to the sealing position; in the process of switching the door leaf between the closing state and the opening state, the first elastic resetting piece drives the outer door body to move to the avoiding position.

According to one embodiment of the invention, the driving part comprises a rotating motor, the rotating motor is mounted on the inner door body, the inner door body is provided with a screw rod, the outer door body is provided with a nut, and an output shaft of the rotating motor is connected with the screw rod to drive the nut to do linear motion along the screw rod; or,

the driving piece comprises a linear motor, the linear motor is installed on the inner door body, the inner door body is provided with a sliding rail, the outer door body is provided with a sliding block, and an output shaft of the linear motor is connected with the sliding block to drive the sliding block to move linearly along the sliding rail.

According to one embodiment of the invention, the driving part comprises a first electromagnet arranged on the inner door body and/or the outer door body, and the first electromagnet comprises an energized state and a de-energized state; and in the electrified state, the first electromagnet forms a magnetic field, and the outer door body is acted by the magnetic field to switch between the sealing position and the avoiding position.

According to one embodiment of the invention, the door assembly is a split door assembly, the door leaves comprising oppositely disposed split door leaves;

the driving piece comprises a second electromagnet arranged on the opening side of the outer door body, and the second electromagnet comprises a power-on state and a power-off state;

in the electrified state, the second electromagnets of the oppositely arranged split door leaves interact with each other, so that the outer door bodies of the oppositely arranged split door leaves move oppositely or back to back.

According to one embodiment of the invention, the inner door body is suitable for being connected to a part to be installed through a cam hinge, the outer door body is provided with a driving part in contact fit with the cam hinge, a second elastic reset piece is arranged between the inner door body and the outer door body, and an elastic sealing layer is arranged on the opening side of the outer door body;

in the process of switching the door leaf from the closed state to the open state, the driving part rotates relative to the cam hinge, the driving part is abutted against the cam hinge under the action of the restoring force of the elastic reset piece, and the distance between the driving part and the axis of the cam hinge is reduced; in the closed state, the distance reaches a maximum distance value.

According to an embodiment of the present invention, the cam hinge includes a hinge shaft and a cam fixed to the hinge shaft, the cam is formed with an involute surface engaged with the driving portion, the driving portion is a stopper fixed to a hinge side of the outer door body, and the stopper is engaged with the involute surface in a contact manner.

The refrigeration equipment comprises a box body and the door assembly, wherein the door assembly is arranged at the opening of the box body.

The refrigeration equipment according to the embodiment of the invention comprises the door assembly, so that all technical effects of the door assembly are achieved, and the details are not repeated.

According to one embodiment of the present invention, the cabinet is formed with a refrigerating compartment and a freezing compartment located below the refrigerating compartment; in the case that the door assembly is a split door assembly, the split door assembly is provided corresponding to the refrigerating compartment and the freezing compartment; the freezing chamber is provided with freezing drawer, freezing drawer's closed position, freezing drawer's drawer panel with refrigeration plant's case courage is sealed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of a French refrigerator of the prior art in a state where the door is not opened;

FIG. 2 is a schematic perspective view of a French refrigerator of the prior art in a state where the door is not opened;

FIG. 3 is a schematic structural view of a French refrigerator of the prior art in a state where a left refrigerating door and a right refrigerating door are opened;

FIG. 4 is a schematic structural view of a refrigerating left door of a French refrigerator of the prior art;

FIG. 5 is an exploded view of a door assembly in accordance with an embodiment of the present invention;

fig. 6 is an exploded view of a partial structure of a door leaf according to an embodiment of the present invention;

FIG. 7 is an enlarged partial schematic view at A of FIG. 6;

FIG. 8 is a schematic cross-sectional view of the door assembly with the second door body in an avoided position in accordance with an embodiment of the present invention;

FIG. 9 is an enlarged partial schematic view of the open side of the door of FIG. 8;

FIG. 10 is a schematic cross-sectional view of the door assembly of an embodiment of the present invention with the second door body in a sealing position;

FIG. 11 is an enlarged partial schematic view of the open side of the door of FIG. 10;

FIG. 12 is a schematic view of the assembly relationship between the first door body and the second door body according to the embodiment of the present invention;

figure 13 is an exploded view of a door leaf provided in accordance with an embodiment of the present invention, from one of its perspectives, wherein the door leaf includes a cam hinge and a drive portion;

figure 14 is an exploded view of a further alternative view of the door leaf provided by an embodiment of the present invention, wherein the door leaf includes a cam hinge and a drive;

FIG. 15 is an assembled schematic view of a door assembly provided by an embodiment of the present invention, wherein the door assembly includes a camming hinge and a drive;

FIG. 16 is a perspective schematic view of a door assembly in an assembled state provided by an embodiment of the present invention, wherein the door assembly includes a camming hinge and a drive;

FIG. 17 is a partially enlarged schematic view of the structure corresponding to the hinge side of FIG. 16;

fig. 18 is an assembly schematic view of the door assembly when a movement gap is reserved between the first door body and the second door body according to the embodiment of the present invention;

FIG. 19 is a schematic view of an assembly configuration of a door assembly with improved performance according to an embodiment of the present invention;

FIG. 20 is an enlarged fragmentary view of the open side of the door of FIG. 19;

fig. 21 is a schematic structural view of the door opening side of the embodiment of the present invention;

FIG. 22 is a schematic view of the installation of a dock seal assembly according to an embodiment of the present invention;

FIG. 23 is an enlarged partial schematic view at B of FIG. 12;

FIG. 24 is a schematic cross-sectional view of a French refrigerator in accordance with an embodiment of the invention;

fig. 25 is a schematic front view of a french refrigerator in accordance with an embodiment of the invention;

reference numerals:

001. a refrigerated left door; 002. a refrigerated right door; 003. freezing the upper door; 004. a freezing lower door; 005. turning over the beam;

1. a first door body; 2. a second door body; 201. an outer door body door seal; 3. a slide rail; 4. a slider; 5. a first electromagnet; 6. a first elastic reset member;

7. a door seal assembly; 701. sealing the suction side door; 702. a main door seal; 703. an elastic extensible member; 704. a barb;

8. a channel; 801. a curved section; 802. a straight line segment;

9. a heat-insulating air bag; 10. a heating member; 11. a protrusion; 12. a thermal insulating foam; 13. a groove; 14. a camera assembly; 15. an electric lifting shelf; 16. a fruit and vegetable drawer; 17. a lower left drawer; 18. a right lower drawer; 19. Freezing the upper panel; 20. freezing the lower panel; 21. a middle partition plate; 22. a false centre sill; 23. a lower beam; 24. a gap; 25. a motor; 26. a box body; 27. a movement gap;

28. a cam hinge; 281. a cam;

29. a drive section; 30. and a second elastic reset piece.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Taking a french refrigerator door as an example, please refer to fig. 1 to 4, the conventional french refrigerator includes a left refrigerating door 001, a right refrigerating door 002, an upper freezing door 003 and a lower freezing door 004. There is a flip beam 005 on the refrigerated left door 001. When the French refrigerator is not opened, the refrigerating left door 001, the refrigerating right door 002, the upper freezing door 003 and the lower freezing door 004 are combined into a French refrigerator mode when viewed from the front. The turnover beam 005 prevents space exchange between the inside of the refrigerator and the outside of the refrigerator between the refrigerating left door 001 and the refrigerating right door 002. The arrangement of the turning beam 005 requires that the turning beam is in a parallel state relative to the door body after the door body of the refrigerator is closed, when the door body of the refrigerator is opened, the turning beam must be in a vertical state relative to the door body, otherwise, the turning beam and another door body are impacted when the door body is closed, so that the door cannot be smoothly closed.

In addition, in other situations where the door split-door assembly needs to be applied, in order to ensure the sealing effect of the door assembly on the premise of normal opening and closing of the door leaves, the turning beam 005 or other components also need to be arranged between the two oppositely arranged door leaves to eliminate the gap, so that the operation of the door split-door assembly is inconvenient and the risk of abnormal damage exists.

Based on the above problems in the prior art, an embodiment of the first aspect of the present invention provides a door assembly, which includes a plurality of door leaves, and the specific number of the door leaves is not limited. When the number of the door leaves is multiple, the gaps between the adjacent door leaves can be eliminated when the door leaves are in a closed state; when the door leaf is one, the door leaf can eliminate the gap between the opening side of the door leaf and the door frame in the closed state.

Referring to fig. 5 to 25, for the door leaf, the door leaf includes two door bodies that can move relatively, that is, a first door body 1 and a second door body 2. The first door body 1 is suitable for being rotatably connected to a part to be installed (such as a door frame, a box body and the like), and then can drive the second door body 2 to rotate, so that the door leaf is opened and closed integrally. Taking a refrigerator as an example, the to-be-installed part is also referred to as a refrigerator body of the refrigerator, the door leaf is installed on the refrigerator body, and when the first door body 1 drives the second door body 2 to rotate towards the refrigerator body 26 of the refrigerator, the door leaf can be closed; when the first door body 1 drives the second door body 2 to rotate back to the box body 26, the door leaf can be opened. Of course, the door assembly provided by the embodiment of the invention can be applied to various scenes such as a refrigerator, a cabinet, a wardrobe and even a living room.

On the basis, the second door body 2 is suitable for moving towards the opening side or the hinged side of the first door body 1 relative to the first door body 1, and then the second door body 2 can be switched between the sealing position and the avoiding position. When the second door 2 moves towards the opening side of the first door 1, the gap 24 at the opening side of the second door 2 can be eliminated, and then the second door 2 correspondingly moves to the sealing position at the moment. When the second door body 2 moves towards the hinged side of the first door body 1, a gap 24 can be formed at the opening side of the second door body 2, so that the door leaf can normally rotate, and then the second door body 2 correspondingly moves to an avoiding position at the moment.

The door leaf and the first door body 1 and the second door body 2 comprising the door leaf are both provided with an opening side and a hinged side. Taking a refrigerator as an example, the side of the door leaf mounted to the cabinet 26 is a hinge side thereof, and the side opposite to the hinge side is an opening side thereof. With reference to fig. 8 and 10, for the door leaf on the left side, the left side of the door leaf is the hinged side thereof, and the right side of the door leaf is the opening side thereof; for a door leaf on the right side, the right side of the door leaf is its hinged side and the left side of the door leaf is its open side. The opening side of the first door body 1 and the opening side of the second door body 2 correspond to the opening sides of the door leaves, and the hinged side of the first door body 1 and the hinged side of the second door body 2 correspond to the hinged side of the door leaves. In addition, the gap 24 on the opening side of the second door body 2 is also the gap 24 on the opening side of the door. When the door assembly is a split door assembly, the gap 24 at the opening side of the door leaf refers to the gap 24 between the split door leaves; when the door assembly is a single-opening door assembly, the gap 24 at the door-opening side refers to the gap 24 between the door and the door frame (or other member of the door to be installed).

The door leaf of the embodiment of the invention can be switched between the closed state and the open state. When the door leaf is in the closed state, the second door body 2 is in the sealing position at the moment to eliminate the gap 24 on the opening side of the door leaf; when the door leaf is switched between the closed state and the open state, the second door body 2 is at an avoiding position to ensure that the door leaf can be normally opened or closed.

According to the door assembly provided by the embodiment of the invention, the door leaf comprises the first door body 1 and the second door body 2, and the second door body 2 can move relative to the first door body 1, so that when the door leaf is in a closed state, the second door body 2 is moved to a sealing position or kept at the sealing position in order to ensure the sealing effect of the door leaf. When the door leaf needs to be opened or closed, the second door body 2 is moved to or kept at the avoiding position in order to prevent the movement of the door leaf from being interfered. When the door assembly is applied to a refrigerator, the dependence of the traditional refrigerator on a turnover beam can be changed, and the defect that the storage space is divided inflexibly due to the arrangement of the partition plate on the refrigerator body 26 is overcome.

According to the embodiment of the invention, the second door body 2 can automatically realize position switching. For example, different sensors may be provided at the door assembly or an installation object of the door assembly (e.g., the cabinet 7 of the refrigerator) for acquiring the door leaf state switching demand and confirming that the door leaf is in the closed state, respectively. For example, the door assembly is configured with a first sensor and a second sensor. The first sensor is used for acquiring the door leaf state switching requirement, and the second sensor is used for confirming that the door leaf is in the closing state.

In one embodiment, the first sensor and the second sensor may be a pressure sensor, an infrared sensor, a hall sensor, or the like, and the specific form is not limited by the examples herein.

When the first sensor is a pressure sensor, the pressure sensor sends a control signal to a controller (when the side-by-side combination door is installed in the refrigerator, the controller refers to the controller of the refrigerator) based on the acquired external pressure, and the controller controls the second door body 2 to switch the position based on the control signal. For example, when the door leaf is in the closed state, the pressure sensor acquires the external pressure, which means that there is a door opening demand, and then the pressure sensor sends a control signal to the controller, and the controller controls the second door body 2 to move to the avoiding position based on the control signal. For another example, when the door leaf is in an open state, the pressure sensor acquires external pressure, which means that a door closing requirement exists at the moment, and then the pressure sensor sends a control signal to the controller, and if the second door body 2 is in a sealing position at the moment, the controller controls the second door body 2 to move to an avoiding position based on the control signal, so that the door leaf can be closed; if the second door body 2 is at the avoiding position at the moment, the controller does not need to control the second door body 2 to switch the position.

When the first sensor is an infrared sensor, a control signal is sent to the controller based on the infrared sensor detecting that the user enters the vicinity of the door assembly or the user leaves the vicinity of the door assembly. For example, when the door leaf is in the closed state, the infrared sensor detects that the user moves to the vicinity of the door assembly, which means that the door opening requirement exists at this moment, and then the infrared sensor sends a signal to the controller, and the controller controls the second door body 2 to move to the avoiding position, so as to ensure that the door leaf can be opened. When the door leaf is switched to the closed state from the open state, and the infrared sensor detects that the user leaves the vicinity of the door assembly for a set time, the sealing effect of the door leaf needs to be ensured at the moment, and then the controller controls the second door body 2 to move to the sealing position based on the detection signal of the infrared sensor.

When the second sensor is a pressure sensor, the second sensor may be installed between the door leaf and the cabinet of the refrigerator. Specifically, when the door leaf is in the closed state, the pressure sensed by the pressure sensor changes from zero to a certain value larger than zero based on the contact between the door leaf of the refrigerator and the box body of the refrigerator. Based on the pressure value of pressure sensor increases to a certain numerical value that is greater than zero from zero, pressure sensor sends control signal to the controller, and the controller is based on control signal control second door body 2 and switches to sealed position.

When the second sensor is an infrared sensor, the infrared transmitting part and the infrared receiving part of the infrared sensor can be respectively arranged on the door leaf and the box body. Therefore, when the door leaf is in an opening state, the infrared transmitting part and the infrared receiving part do not have a corresponding relation. When the door leaf is in the closed state, infrared emission portion and infrared receiving unit correspond this moment, and infrared emission portion transmits infrared signal to infrared receiving unit, and infrared receiving unit sends control signal to the controller based on received infrared signal, and the controller switches to sealed position based on control signal control second door body 2.

When the second sensor is a hall sensor, the hall sensor is arranged on one of the door leaf and the box body, and a magnetic part corresponding to the hall sensor is arranged on the other of the door leaf and the box body. When the relative position relation between the door leaf and the box body changes and the door leaf is in a closed state, the distance between the magnetic part and the Hall sensor changes, and then the Hall sensor can sense the change of the magnetic field around the Hall sensor in time and send the change to the controller. At this time, the controller may control the second door body 2 to be switched to the sealing position based on a signal from the hall sensor. Wherein the magnetic member may, but need not, take the form of a magnet. Magnetic elements refer to objects that react in some way to a magnetic field and do not require themselves to be capable of generating a magnetic field. The magnetic part can be prepared from any magnetic material, such as magnets, low-carbon steel and the like; of course, the magnetic member may be an energized coil. The Hall sensor can comprise an elastic sheet and a circuit which are matched with the magnet, when the magnet is far away from or close to the elastic sheet, the elastic sheet bounces, and then the current of the circuit changes. In this case, the controller controls the state switching of the second door 2 based on the change in the current. Of course, the specific type of hall sensor is not limited by the examples herein.

Of course, the type and operation principle of the first sensor are not limited by the above examples, as long as the first sensor can be used for determining the door opening or closing requirement of the user. For the same reason, the type and the operation principle of the second sensor are not limited as long as the second sensor can be used for detecting whether the door leaf is in the closed state.

According to an embodiment of the present invention, the first door body 1 is located inside the second door body 2, refer to fig. 12. In this case, the second door body 2 completely or partially covers the first door body 1. Of course, the structural form of the first door body 1 and the second door body 2 is not limited by the examples herein, and for example, the first door body 1 and the second door body 2 may also be arranged side by side along the front-rear direction. Wherein, the front-back direction refers to the thickness direction of the door leaf.

According to the embodiment of the invention, when the second door body 2 completely wraps or partially wraps the first door body 1, the first door body 1 is also an inner door body, and the second door body 2 is also an outer door body. According to the embodiment of the present invention, since the outer door body can move relative to the inner door body, that is, a movement gap 27 is necessarily reserved between the outer door body and the inner door, please refer to fig. 18. The presence of this movement gap 27 can affect the performance of the door assembly. For example, when the door assembly is applied to a refrigerator, the inside of the refrigerator exchanges heat with the outside through the moving gap 27, which further affects energy consumption and may cause condensation at a position of the door body close to the moving gap 27. In order to ensure the performance of the door assembly, the following modes are proposed in the embodiments of the present invention, please refer to fig. 19 to 23, and the following modes can be combined with each other:

the first mode is as follows: the opening side of the door leaf is provided with a heat insulation air bag 9, and along the direction of the movement of the outer door body relative to the inner door body, the first end of the heat insulation air bag 9 is connected with the inner door body, and the second end is connected with the outer door body. When the door leaf is in a closed state, the outer door body is in a sealing position and the heat insulation air bag 9 is stretched; when the door leaf needs to be switched between the closed state and the open state, the outer door body is in the avoiding position and the heat insulation air bag 9 is compressed.

The movement gap 27 between the outer door body and the inner door body can be filled through the arrangement of the heat insulation air bag 9, and the performance of the door assembly is further ensured. When the door assembly is applied to the refrigerator, the arrangement of the heat insulation air bag 9 can form a protection device for preventing cold air from leaking, so that heat exchange between the inside of the refrigerator and the outside is reduced or even avoided, and condensation is prevented from being generated on the surface of the outer door body of the door leaf. Moreover, the arrangement of the heat insulation air bag 9 does not influence the movement of the outer door body relative to the inner door body.

According to the embodiment of the present invention, the number of the heat-insulating air bags 9 is not limited, and may be one or more. When the number of the heat insulation airbags 9 is plural, the heat insulation airbags 9 are arranged at intervals along the thickness direction of the door, and thus, the heat insulation airbags 9 form a multilayer heat insulation protection effect in the direction from the inner side to the outer side of the door, and the performance of the door can be further improved. Further, the dimension of the heat-insulating air bag 9 in the door-height direction generally corresponds to the height of the door. Of course, it is not excluded to provide a plurality of heat-insulating airbags 9 along the height direction of the door leaf to achieve the heat-insulating effect.

The second mode is as follows: a channel 8 extending in the door leaf thickness direction is formed between the opening side of the inner door body and the opening side of the outer door body, and the channel 8 includes a bent section 801. Wherein the width of the channel 8 is reduced when the outer door body moves to the sealing position towards the opening side of the inner door body with respect to the inner door body. When the outer door body is adapted to move to the escape position toward the hinge side of the inner door body relative to the inner door body, the width of the tunnel 8 is increased.

By the provision of the bent section 801, the performance of the door assembly can be improved. For example, when the door assembly is applied to a refrigerator, the bent section 801 may extend the path of cold air leakage, increase the resistance of cold air leakage, and further reduce or even avoid heat exchange between the inside of the refrigerator and the outside, so as to prevent condensation on the surface of the outer door body of the door leaf.

According to an embodiment of the present invention, "curved section 801" is a concept corresponding to "straight section 802". That is, the term "curved section 801" is used herein as long as it is not in the form of a straight section 802 structure. For example, "curved segment 801" includes the structural form of an arc segment, and also includes the structural form of a bend segment formed by connecting a plurality of straight segments 802. Furthermore, the channel 8 of the present embodiment may be designed in a labyrinth structure if the structure is various.

When provided with a curved section 801, the channel 8 may also include a straight section 802 located at least one end of the curved section 801, according to embodiments of the present invention.

In one embodiment, one of the outer door body and the inner door body is formed with a groove 13 and the other is formed with a projection 11, see further fig. 20, and further, the above-mentioned curved section 801 is formed between the projection 11 and the groove 13. Of course, the formation of the curved section 801 does not necessarily take this form. For example, the outer door body and the inner door body may be formed with the protrusions 11, and the two portions of the protrusions 11 cooperate to form the curved section 801. When the outer door body or the inner door body is provided with the protrusion 11, the protrusion 11 may be provided in a hollow structure, and the heat insulation foam 12 is provided inside the hollow protrusion 11. For example, the insulating foam 12 may be polystyrene foam (EPS), insulating polyurethane, or other materials having an insulating effect. Of course, other forms of insulation may be used in the projections 11 to ensure the insulation at the location of the channel 8.

The third mode is as follows: a passage 8 extending in the door leaf thickness direction is formed between the opening side of the inner door body and the opening side of the outer door body, and a heating member 10 is provided at a position corresponding to the passage 8. Likewise, the width of the channel 8 is reduced when the outer door body moves to the sealing position towards the opening side of the inner door body with respect to the inner door body. When the outer door body is adapted to move to the escape position toward the hinge side of the inner door body relative to the inner door body, the width of the tunnel 8 is increased.

By providing the heating element 10, the local temperature of the door leaf can be compensated for, preventing condensation. For example, when the door assembly is applied to a refrigerator, the heating member 10 is disposed at the channel 8, and then when the temperature of the position of the outer door body corresponding to the channel 8 is low due to leakage of cold air, the outer door body is locally heated by the operation of the heating member 10, so as to prevent condensation generated on the outer door body.

The specific form of the heating member 10 according to the embodiment of the present invention is not limited, and for example, the heating member 10 may be in various forms of a thin film heating sheet, a heating wire, and a heating pipe. When the heating member 10 is a film heating sheet, it is possible to save space and to ensure heating efficiency.

The heating member 10 may be attached to the inner surface of the passage 8, may be disposed in the passage 8, or may be fixed to the sidewall or the outer surface of the passage 8, as long as the local heating of the corresponding position of the passage 8 can be realized.

The fourth mode is that: wherein, the door subassembly is for opening door subassembly, is provided with door at the side of opening of door leaf and seals subassembly 7 this moment.

By providing the door seal assembly 7 at the opening side of the side-by-side hinged door leaf, the performance of the door assembly can be further improved.

According to the embodiment of the invention, the door seal assembly 7 can adopt a door seal, and after the door leaf is closed, the door seal can be attached together to prevent the cold leakage at the gap 24 of the door assembly.

In one embodiment, the dock seal assembly 7 includes a suction side dock seal 701 extending in a thickness direction of the split door leaf, and a main dock seal 702 extending in a width direction of the split door leaf, see fig. 20 and 23. In one case, the suction dock seal 701 and the main dock seal 702 are connected by a resilient expansion member 703, as is the case in fig. 20. By arranging the elastic expansion piece 703 between the opposite side door seal 701 and the main door seal 702, the door seal assembly 7 can be ensured to have extensibility without affecting the normal movement of the outer door body. The specific structure of the elastic expansion member 703 is not limited, for example, the elastic expansion member 703 may have a wave-shaped structure, a semicircular structure, a curved structure, or the like. In one embodiment, resilient telescoping member 703 employs a low cost and readily available spring.

According to an embodiment of the present invention, the door seal assembly 7 is installed at a corner position of the split door leaf, and the suction side door seal 701 is disposed near an inner surface of the split door leaf.

According to the embodiment of the invention, the suction side door seal 701 and the main door seal 702 are both provided with the barbs 704, the barbs 704 of the suction side door seal 701 are installed on the outer door body, and the barbs 704 of the main door seal 702 are installed on the inner door body. The barbs 704 can be arranged to enable quick assembly and disassembly of the dock seal assembly 7. Of course, the manner in which the dock seal assembly 7 is mounted is not limited by the examples herein.

In fig. 20 and 23, two different structures of the opposite side dock seal 701 and the main dock seal 702 are shown. It should be noted that the structural forms of the suction-side dock seal 701 and the main dock seal 702 are not limited by the drawings as long as the sealing effect can be achieved.

According to the embodiment of the invention, the four ways of improving the performance of the door assembly can be combined at will. When the four modes are combined on the same door assembly at the same time, the door assembly obtained at the moment can completely prevent the condensation phenomenon on the outer door body when the door assembly is applied to the refrigerator. When the first and second modes are combined, the insulating bladder 9 may be disposed in the curved section 801 or the straight section 802 of the passage 8. When the channel 8 comprises the bent section 801 and the straight line sections 802 at two ends of the bent section 801, the heat insulation air bag 9 can be arranged in the straight line sections 802 at two ends of the bent section 801, so that the functions of the heat insulation air bag 9 and the bent section 801 can be embodied to the maximum extent, and the heat insulation air bag 9 is convenient to install.

According to the embodiment of the present invention, a driving member is disposed between the first door body 1 and the second door body 2, and the driving member is adapted to drive the second door body 2 to move towards the opening side and/or the hinge side of the first door body 1 corresponding to the driving member. The automatic switching of the position of the second door body 2 can be realized through the arrangement of the driving piece, and the operation of the door body is convenient. The driving member may be disposed between the first door body 1 and the second door body 2, or may be disposed at any other position that can be realized, as long as the driving member can drive the second door body 2 to realize position switching. Also, the form of the driving member is not limited as long as the power required for the movement can be supplied to the second door body 2.

According to an embodiment of the present invention, referring to fig. 12, the driving member may include a motor 25, and the second door 2 is moved relative to the first door 1 by the motor 25. Of course, fig. 12 mainly illustrates a connection relationship between the first door body 1 and the second door body and the driving unit, and does not limit the specific structural form and the installation position of the driving unit. That is, although the motor 25 is provided on the hinge side of the first door body 1 and the second door body 2 in fig. 12, the motor 25 may alternatively be provided at another position of the door leaf. In one case, please refer to fig. 5 and fig. 6, the driving member includes a linear motor, the linear motor is installed on the first door body 1, the first door body 1 is provided with a slide rail 3, the second door body 2 is provided with a slide block 4, and an output shaft of the linear motor is connected to the slide block 4 to drive the slide block 4 to move linearly along the slide rail 3. In another case, the driving member includes a rotating electrical machine, the rotating electrical machine is mounted on the first door body 1, the first door body 1 is provided with a lead screw, the second door body 2 is provided with a nut, and an output shaft of the rotating electrical machine is connected with the lead screw to drive the nut to do linear motion along the lead screw. Therefore, when the output shaft of the rotating motor rotates, the screw rod can be driven to rotate so as to drive the nut to do linear motion along the screw rod. Of course, the mounting positions of the above rotary motor, lead screw and nut, and the mounting positions of the linear motor, slide rail 3 and slider 4 may also be correspondingly exchanged if conditions permit.

According to an embodiment of the invention, the actuating member may comprise a magnetic member which may generate a magnetic field to cause a change in the force to which the second door body 2 is subjected. The second door body 2 is switched in position based on a change in the applied force. For example, the first electromagnet 5 is provided on at least one of the first door body 1 and the second door body 2, and the first electromagnet 5 includes an energized state and a de-energized state. When the first electromagnet 5 switches the state, the acting force applied to the second door body 2 changes.

In one of these cases: one of the first door body 1 and the second door body is provided with a first electromagnet 5, and the other is provided with a magnetic member (e.g., an iron block) that can interact with the first electromagnet. Further, when the first electromagnet is energized or de-energized, the acting force acting on the magnetic member changes to move the second door body to the sealing position or the avoiding position. In another case, the first door body 1 and the second door body 2 are both provided with the first electromagnet 5, and when the first electromagnet 5 is powered on, mutually repulsive acting force is generated between the first door body 1 and the second door body 2, so that the second door body 2 moves to an avoiding position. In another case, the first door 1 and the second door 2 are both provided with the first electromagnet 5, and when the first electromagnet 5 is energized, an attractive force is generated between the first door 1 and the second door 2, so that the second door 2 moves to the sealing position.

According to the embodiment of the invention, when the door assembly is a split door assembly, the door leaves are multiple in number and comprise split door leaves which are oppositely arranged. In this case, the driving member may be provided not only between the first door body 1 and the second door body 2 of the same door but also between different door leaves. For example, the driving member includes a second electromagnet having an energized state and a de-energized state, and the second electromagnet is disposed on the opening side of the second door body 2 of the casement door. When the second electromagnet switches the state, the second door bodies 2 of the split door leaves exert or withdraw acting force mutually, so that the second door bodies 2 of the split door leaves move oppositely or oppositely. In one of these cases: the two second door bodies 2 are respectively provided with a second electromagnet, and when the second electromagnets are electrified, mutually repulsive acting force is generated between the two second door bodies 2, so that the second door bodies 2 move to avoiding positions. In another case, the two second door bodies 2 are provided with second electromagnets, and when the second electromagnets are powered on, an attractive force is generated between the two second door bodies 2, so that the second door bodies 2 move to the sealing position.

According to the embodiment of the invention, a first elastic reset piece 6 is connected between the second door body 2 and the first door body 1, and at the moment, the driving piece and the first elastic reset piece 6 respectively realize the driving and the resetting of the second door body 2. In one case, when the door leaf needs to be switched between the closed state and the open state, the driving piece drives the second door body 2 to move to the avoiding position; in the closed state, the acting force of the driving piece on the second door body 2 is removed, and the first elastic resetting piece 6 drives the second door body 2 to move to the sealing position. In the closed state, the driving member drives the second door body 2 to move to the sealing position; when the door leaf needs to be switched between the closed state and the open state, the first elastic resetting piece 6 drives the second door body 2 to move to the avoiding position. When the first elastic restoring member 6 is provided, the first elastic restoring member 6 may be fixed to the first door body 1, or the first elastic restoring member 6 may be fixed to the second door body 2.

Of course, even if the first elastic reset piece 6 is not provided, the driving and resetting of the second door body 2 can be simultaneously realized through the driving piece, so that the second door body can be in a sealing position or an avoiding position. For example, when the driving member comprises a motor 25, the second door body 2 may be driven by the motor 25 to switch between the sealing position and the retracted position. That is, when the motor 25 moves in the forward direction, the second door body 2 is driven to move to the sealing position; when the motor 25 moves in the reverse direction, the second door 2 is driven to move to the retreat position. For another example, when the driving member includes the first electromagnet 5, the second door 2 can be switched between the sealing position and the avoiding position by switching the state of the first electromagnet 5. For example, when the first electromagnet 5 is energized in the forward direction, the second door body 2 moves to the sealing position under the action of the magnetic field; when the first electromagnet 5 is electrified reversely, the second door body 2 moves to an avoiding position under the action of the magnetic field.

According to an embodiment of the present invention, referring to fig. 5 and fig. 6, when the first elastic reset member 6 is disposed between the first door body 1 and the second door body 2, the number of the first elastic reset members 6 may be multiple, and the multiple first elastic reset members 6 are distributed along the height direction of the door leaf, so as to ensure that the first door body 1 and the second door body 2 are stressed uniformly. Of course, the number and the specific distribution of the first elastic restoring members 6 are not limited by the examples provided herein, as long as a force can be applied to the second door body 2 to restore the second door body 2.

According to the embodiment of the invention, in addition to the driving piece serving as the power unit for driving the second door body 2 to move relative to the first door body 1, the door leaf fittings can be reasonably arranged, so that the second door leaf can move relative to the first door leaf in the door leaf opening and closing process.

According to an embodiment of the present invention, please refer to fig. 13 to 17, the first door body 1 of the door leaf is adapted to be connected to the component to be installed through a cam hinge 28, and the second door body 2 is provided with a driving portion 29 in contact fit with the cam hinge 28. In the process of switching the door from the closed state to the open state, the driving portion 29 rotates relative to the cam hinge 28, and the distance between the driving portion 29 and the axis of the cam hinge 28 is reduced, so that the second door body 2 moves toward the hinge side of the first door body 1 relative to the first door body 1. In this case, the door assembly can move the second door body 2 relative to the first door body 1 without additionally providing a power unit (e.g., the aforementioned motor or magnetic member).

Taking the application of the door assembly to a refrigerator as an example, the above-mentioned portion to be installed is the cabinet 26 of the refrigerator. Of course, since the application scenario of the door assembly of the embodiment of the present invention is not limited to the refrigerator, the to-be-installed part may also refer to other objects.

Referring to fig. 17, in the process that the driving portion 29 on the door is closer to the opening side than the cam hinge 28 and the door is switched from the closed state to the open state, the distance between the driving portion 29 and the axis of the cam hinge 28 is reduced, so that the opening side of the door gradually forms the gap 24, and the gap 24 can ensure the normal rotation of the door and prevent the movement of the door from being interfered.

According to the embodiment of the present invention, the cam hinge 28 refers to a hinge that can change the distance between the axis of the cam hinge 28 and the driving portion 29 as the door leaf rotates. The axis of the cam hinge 28 is a rotation center axis of the cam hinge 28 (hereinafter, may be simply referred to as an axis). In fig. 17, the cam hinge 28 includes a cam 281 engaged with the driving portion 29, and as the door is opened and closed, the driving portion 29 rotates with respect to the cam 281 and abuts against different positions of the cam 281, thereby changing the distance between the axes of the driving portion 29 and the cam hinge 28. The structural form of the cam 281 and the driving part 29 is not limited, as long as the distance between the axis of the cam hinge 28 and the driving part 29 can be changed as the door rotates. For example, the cam 281 may be formed with an involute surface that cooperates with the drive portion 29. For another example, the driving portion 29 engaged with the cam 281 may be a stopper fixed to the hinge side of the second door 2, and the stopper is always engaged in contact with the involute surface. Of course, the driving portion 29 may be a baffle or other structure.

According to the embodiment of the present invention, in order to ensure the reliable engagement between the driving part 29 and the cam hinge 28, referring to fig. 17, a second elastic restoring member 30 is disposed between the first door body 1 and the second door body 2. Specifically, along the direction in which the second door body 2 moves relative to the first door body 1, two ends of the second elastic reset piece 30 are respectively connected to the first door body 1 and the second door body 2. When the door is switched from the closed state to the open state, under the action of the restoring force of the second elastic reset piece 30, the distance between the axis of the cam hinge 28 and the driving part 29 is gradually reduced; when the door is switched from the open state to the closed state, the driving portion 29 abuts against the cam 281 at different positions, so that the distance between the axis of the cam hinge 28 and the driving portion 29 is gradually increased, and in the process, the second elastic restoring member 30 is gradually deformed until the distance between the axis of the cam hinge 28 and the driving portion 29 reaches the maximum distance value.

According to the embodiment of the present invention, the cam hinge 28 does not necessarily include the cam 281, for example, the cam hinge 28 may be provided with a gradually-tapered slot, and the driving portion 29 includes a driving rod capable of moving along the gradually-tapered slot, so that the distance between the axis of the cam hinge 28 and the driving rod may be changed during the door leaf rotation process by the engagement between the gradually-tapered slot and the driving rod.

According to the embodiment of the present invention, in addition to the provision of the second elastic restoring member 30 to ensure that the cam hinge 28 is always in the engagement relation with the driving part 29 during the opening and closing of the door leaf, the cam hinge 28 and the driving part 29 may be always in contact by the force of the magnetic field, or the cam hinge 28 and the driving part 29 may be always in contact by the engagement between the above-mentioned involute groove and the driving lever.

According to an embodiment of the present invention, an elastic sealant may be provided at the opening side of the second door body 2. Especially when the second door is moved relative to the first door 1 by the aforementioned cam hinge 28 and the driving part 29, even if the gap 24 is zero in the closed state of the door, the normal opening and closing of the door can be facilitated by the elastic sealing layer. Specifically, if the gap 24 on the door opening side is zero or approximately zero when the door is in the closed state, the door cannot be opened if the opening side of the second door body 2 is rigid. And through the arrangement of the elastic sealing layer, the door leaf can be opened through the deformation of the elastic sealing layer. And the cooperation between the cam hinge 28 and the driving part 29 makes the opening of the door leaf gradually easy as the opening angle increases. Conversely, the closing process of the door leaf is the same principle. The structure of the elastic sealing layer may correspond to the structure of the side plate on the opening side of the second door body 2, that is, the size of the elastic sealing layer is substantially the same as that of the side plate on the opening side of the second door body 2.

In addition, when the second door body 2 moves relative to the first door body 1 under the action of the driving piece, the door leaf can be opened and closed by driving the second door body 2 to move to an avoiding position through the driving piece, and therefore normal opening and closing of the door leaf can be easily realized even if an elastic sealing layer is not arranged.

According to the embodiment of the invention, the second door body 2 moves linearly relative to the first door body 1. In order to guide the movement of the second door body 2, linear guide structures matched with each other can be arranged between the first door body 1 and the second door body 2, and the number and the arrangement position of the linear guide structures are not limited. For example, the slide rail 3 and the slider 4 may be provided between the first door body 1 and the second door body 2. Of course, as long as the second door 2 can move to the opening side or the hinge side relative to the first door 1, the second door 2 can also move in other forms relative to the first door 1.

According to the embodiment of the present invention, the first elastic restoring member 6, the second elastic restoring member 30, and the elastic expansion member 703 may be, but not limited to, a spring structure, as long as the corresponding restoring or expansion effects can be achieved.

According to an embodiment of the second aspect of the present invention, there is provided a refrigeration apparatus including a cabinet 26, and further including the door assembly described above, which is installed at an opening of the cabinet 26.

According to the refrigeration equipment provided by the embodiment of the invention, due to the arrangement of the door assembly, the second door body 2 of the door assembly can move relative to the first door body 1. When the second door body 2 moves to the sealing position, the sealing performance of the refrigeration equipment can be ensured, and further the refrigeration equipment is prevented from cold leakage. And because the gap 24 on the door leaf opening side is zero or nearly zero when the second door body 2 is at the sealing position, the beauty of the refrigeration equipment can be further ensured. When the second door body 2 moves to the avoiding position, normal opening and closing of the door assembly can be guaranteed, and normal application of the refrigeration equipment is guaranteed.

According to an embodiment of the present invention, the refrigeration device may be a refrigerator, an ice chest, a heating chest, and the like.

Referring to fig. 24 to 25, the refrigerating apparatus is a refrigerator, and a cabinet 26 of the refrigerating apparatus is formed with a refrigerating chamber and a freezing chamber located below the refrigerating chamber; in the case that the door assembly is a side-by-side door assembly, the side-by-side door assembly is arranged corresponding to the refrigerating chamber and the freezing chamber; the freezing chamber is provided with a freezing drawer, and a drawer panel of the freezing drawer and a box liner of the refrigeration equipment are sealed at the closing position of the freezing drawer.

Because it is sealed to form between freezing drawer and drawer panel and refrigeration plant's the case courage, and then what the position that the door subassembly corresponds the freezer this moment also can set up is thinner than traditional freezing door leaf.

In fig. 24 to 25, the door assembly includes a left door leaf and a right door leaf. The middle partition 21 divides the space inside the refrigerator body 26 into two large-area spaces of a refrigerating space and a freezing space. A camera assembly 14, an electric lifting shelf 15, a fruit and vegetable drawer 16, a left lower drawer 17 and a right lower drawer 18 are arranged corresponding to the refrigerating space. The two freezing drawers are correspondingly provided with a freezing upper panel 19 and a freezing lower panel 20, a false middle beam 22 is arranged between the two freezing drawers, and the bottom of the freezing drawer is provided with a lower beam 23. The freezing upper panel 19, the freezing lower panel 20, the middle partition 21, the false middle beam 22, the lower beam 23 and the box body 26 form a closed freezing space, and cold air in the freezing space is prevented from leaking to a space between the refrigerating space and the left door leaf and the right door leaf.

The following describes an embodiment of the present invention with reference to fig. 5 to 25:

referring to fig. 5 to 12, the door assembly is a split door assembly including a left door leaf and a right door leaf. The left door leaf and the right door leaf respectively comprise an outer door body and an inner door body, and further comprise an outer door body door seal 201. A plurality of first electromagnets 5 are respectively provided on the opening sides of the left door leaf and the right door leaf. Specifically, the inner door body of the left door leaf and the inner door body of the right door leaf are respectively provided with a plurality of first electromagnets 5, and an iron block is arranged on the outer door body corresponding to the first electromagnets 5. A spring serving as a first elastic return member 6 is provided in the vicinity of the first electromagnet 5, a first end of the spring is fixedly connected to the inner door body, and a second end of the spring abuts against the outer door body. The number of the first elastic return members 6 and the number of the springs are plural along the height direction of the door leaf (referring to at least one of the left and right door leaves).

When the state of the door leaf needs to be switched, the first electromagnet 5 is started, and then the first electromagnet 5 generates repulsive force to the iron block, so that the outer door body moves towards the hinged side of the inner door body, and further the gap between the two door leaves is changed from zero to be a preset gap. In this case, the opening of the two door leaves is not disturbed.

When the door leaf is just closed, the first electromagnet 5 stops working, and a gap 24 still exists between the left door leaf and the right door leaf, please refer to fig. 8 and 9. Then, the outer door bodies of the left door leaf and the right door leaf move relatively under the resilience force of the spring, so that the gap 24 between the two door leaves is zero or approximately zero, please refer to fig. 10 and 11.

In the course of the gap 24 between the two door leaves decreasing, for each door leaf the outer door body moves towards the opening side of the inner door body, so that the width of the channel 8 formed between the opening side of the outer door body and the opening side of the inner door body becomes larger. The channel comprises a bent section 801 and straight line sections 802 positioned at two ends of the bent section, and the straight line sections 802 at two sides of the bent section 801 are provided with heat insulation air bags 9. As the outer door body moves toward the opening side of the inner door body, the heat-insulating air bag 9 is stretched. On the contrary, when the gap 24 between the two door leaves increases, for each door leaf, the outer door body moves toward the hinged side of the inner door body, so that the width of the passage 8 formed between the opening side of the outer door body and the opening side of the inner door body becomes smaller. As the outer door body moves toward the hinge side of the inner door body, the heat-insulating air bag 9 is compressed. Under the condition that the heat insulation air bag 9 is compressed, the size of the heat insulation air bag 9 along the thickness direction of the door leaf is smaller than that of the straight line section 802, so that the heat insulation air bag 9 is ensured to be installed. In addition, the heating member 10 is installed on the outer surface of the passage 8, and thus the installation of the heating member 10 and the heat-insulating air bag 9 do not interfere with each other at this time, and the heating member 10 does not damage the heat-insulating air bag.

In order to guide the movement of the outer door body, a sliding rail 3 and a sliding block 4 are arranged between the outer door body and the inner door body of the door leaf. Specifically, the upper end and the lower end of the outer door body and the inner door body are respectively provided with a sliding rail 3 and a sliding block 4, so that the outer door body can move along a straight line.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. A door assembly, comprising:

the heat insulation air bag (9) is arranged on the opening side of the door leaf and is arranged along the direction of the outer door body moving relative to the inner door body, the first end of the heat insulation air bag (9) is connected with the inner door body, and the second end of the heat insulation air bag is connected with the outer door body;

the door leaf is adapted to switch between a closed state and an open state: in the closed state, the outer door body is in the sealing position and the insulating airbag (9) is stretched; in the process of switching the door leaf between the closed state and the open state, the outer door body is in the avoiding position and the heat insulation air bag (9) is compressed.

2. A door assembly according to claim 1, wherein the insulating air-bags (9) are plural in number and arranged at intervals in a thickness direction of the door leaf.

3. The door assembly according to claim 1, wherein the heat-insulating air bag (9) is provided in a channel (8) between the outer door body and the inner door body, the channel (8) extending in a thickness direction of the door leaf and including a curved section (801), the channel (8) becoming wider as the outer door body moves toward an opening side of the inner door body and becoming narrower as the outer door body moves toward a hinge side of the inner door body.

4. A door assembly as claimed in claim 3, wherein said channel (8) further comprises straight sections (802) at both ends of said curved section (801), said straight sections (802) at both ends of said curved section (801) being provided with said insulating bladder (9).

5. A door assembly according to claim 3, wherein one of the outer door body and the inner door body is formed with a recess (13) and the other is formed with a projection (11), and the curved section (801) is formed between the recess (13) and the projection (11).

6. A door assembly according to claim 5, characterized in that the bulge (11) is provided internally with an insulating foam (12).

7. A door assembly according to any one of claims 3-6, characterized in that the channel (8) is provided with a heating element (10).

8. A door assembly as claimed in claim 7, wherein the heating element (10) is a thin film heating sheet applied to the inner surface of the channel (8).

9. A door assembly according to any one of claims 1 to 6, wherein the door assembly is a split door assembly, the door leaf comprising a split door leaf.

10. A door assembly according to claim 9, wherein the opening side of the split door leaf is provided with a door seal assembly (7), the door seal assembly (7) comprising a suction side door seal (701) extending in the thickness direction of the split door leaf, and a main door seal (702) extending in the width direction of the split door leaf, the suction side door seal (701) and the main door seal (702) being connected by an elastic expansion member (703).

11. A door assembly according to claim 10, wherein the door seal assembly (7) is mounted at a corner position of the split door leaf and the suction side door seal (701) is arranged close to an inner surface of the split door leaf.

12. The door assembly as claimed in claim 10, wherein the suction-side door seal (701) and the main door seal (702) are each provided with a barb (704), the barbs (704) of the suction-side door seal (701) being mounted to the outer door body, and the barbs (704) of the main door seal (702) being mounted to the inner door body.

13. The door assembly according to any one of claims 1 to 6, wherein a driving member and a first elastic reset member (6) are arranged between the inner door body and the outer door body;

in the process of switching the door leaf between the closed state and the open state, the driving piece drives the outer door body to move to the avoiding position; in the closed state, the first elastic resetting piece (6) drives the outer door body to move to the sealing position; or,

in the closed state, the driving piece drives the outer door body to move to the sealing position; in the process of switching the door leaf between the closing state and the opening state, the first elastic reset piece (6) drives the outer door body to move to the avoiding position.

14. The door assembly as claimed in claim 13, wherein the driving member includes a rotating motor (25), the rotating motor (25) is mounted to the inner door body, the inner door body is provided with a lead screw, the outer door body is provided with a nut, and an output shaft of the rotating motor (25) is connected to the lead screw to drive the nut to move linearly along the lead screw; or,

the driving piece comprises a linear motor (25), the linear motor (25) is installed on the inner door body, the inner door body is provided with a sliding rail (3), the outer door body is provided with a sliding block (4), the output shaft of the linear motor (25) is connected with the sliding block (4) to drive the sliding block (4) to move linearly along the sliding rail (3).

15. A door assembly according to claim 13, characterized in that the driving member comprises a first electromagnet (5) arranged at the inner door body and/or the outer door body, the first electromagnet (5) comprising an energized state and a de-energized state; and in the electrified state, the first electromagnet (5) forms a magnetic field, and the outer door body is acted by the magnetic field to switch between the sealing position and the avoiding position.

16. The door assembly as claimed in claim 13, wherein the door assembly is a split door assembly, the door leaf comprising oppositely disposed split door leaves;

17. A door assembly according to any one of claims 1 to 6, characterized in that the inner door body is adapted to be connected to a component to be mounted by means of a cam hinge (28), the outer door body is provided with a driving portion (29) in contact fit with the cam hinge (28), a second elastic return member (30) is arranged between the inner door body and the outer door body, and the opening side of the outer door body is provided with an elastic sealing layer;

when the door leaf is switched from the closed state to the open state, the driving part (29) rotates relative to the cam hinge (28), the driving part (29) is abutted against the cam hinge (28) under the action of the restoring force of the elastic reset piece, and the distance between the driving part (29) and the axis of the cam hinge (28) is reduced; in the closed state, the distance reaches a maximum distance value.

18. The door assembly as claimed in claim 17, wherein the cam hinge (28) includes a hinge shaft and a cam (281) fixed to the hinge shaft, the cam (281) having an involute surface formed thereon to be engaged with the driving portion (29), the driving portion (29) being a stopper fixed to a hinge side of the outer door body, the stopper being engaged in contact with the involute surface.

19. A refrigeration appliance comprising a cabinet (26) and, characterized in that it further comprises a door assembly as claimed in any one of claims 1 to 18, mounted at an opening of said cabinet (26).

20. The refrigerating apparatus according to claim 19, wherein the tank (26) is formed with a refrigerating compartment and a freezing compartment located below the refrigerating compartment; in the case that the door assembly is a split door assembly, the split door assembly is provided corresponding to the refrigerating compartment and the freezing compartment; the freezing chamber is provided with freezing drawer, freezing drawer's closed position, freezing drawer's drawer panel with refrigeration plant's case courage is sealed.