CN111059819A

CN111059819A - Refrigerator with a door

Info

Publication number: CN111059819A
Application number: CN201910420827.0A
Authority: CN
Inventors: 刘磊; 陈忠峻; 冯衬
Original assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Current assignee: Qingdao Haier Co Ltd; Qingdao Haier Refrigerator Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-04-24
Anticipated expiration: 2039-05-20
Also published as: CN111059819B

Abstract

The invention provides a refrigerator, which comprises a refrigerator body; the first door body and the second door body are arranged on the front side of the box body in a left-right split manner; the sealing beam vertically extends and can be arranged on the first door body in a reciprocating translation mode along the transverse direction of the first door body; the two sealing blocks are respectively arranged at the upper end and the lower end of the sealing beam in a telescopic way; the first driving mechanism is used for driving the sealing beam to transversely reciprocate; the second driving mechanism is used for driving the two sealing blocks to stretch and retract; the refrigerator is configured to: after the first door body and the second door body are both closed, the sealing beam is translated from a retracted state to a second door body to an extended state for sealing a gap between the first door body and the second door body, and the two sealing blocks are extended out of the sealing beam to respectively seal and abut against the top wall and the bottom wall of the box body; and before the first door body and/or the second door body are opened, the sealing beam is translated from the extending state to the retracting state, and the two sealing blocks are retracted into the sealing beam. The invention has better sealing performance between the two split door bodies and less noise when opening and closing the door.

Description

Refrigerator with a door

Technical Field

The invention relates to a refrigerating and freezing device, in particular to a refrigerator.

Background

Some large-capacity refrigerators have a left-right side-by-side door structure, i.e., a storage compartment is closed by two left and right door bodies. The split door structure has high requirement on the sealing performance of the gap between the two door bodies.

A common prior art method is to mount a vertical beam for sealing on a door body. When the door body is opened, the vertical beam is in a state of being approximately vertical to the door body. In the closing process of the door body, the vertical beam is guided by the box body to rotate along a vertical axis to a state approximately parallel to the door body so as to seal a gap between the door body and the other door body and reduce the leakage of the cold energy of the storage chamber through the gap.

However, the above-described method is of a purely mechanical structure. In the process of opening and closing the door, the vertical beam is difficult to rotate, jamming is easy to occur, and the vertical beam is easy to collide with the box body to generate noise. More importantly, due to the structure, the vertical beam is difficult to be in close contact with the two door bodies, and the sealing performance is not good.

Disclosure of Invention

An object of the present invention is to overcome at least one of the drawbacks of the prior art and to provide a refrigerator having better sealing performance between side-by-side combination doors and less noise in opening and closing the doors.

Another object of the present invention is to reduce friction between the seal beam and the door or the door body when the seal beam is translated.

The invention further aims to realize automatic translation of the sealing beam, so that the door opening and closing process of a user is more labor-saving, and the user experience is enhanced.

In particular, the present invention provides a refrigerator, comprising:

a box body;

the first door body and the second door body are arranged on the front side of the box body in a left-right split manner;

the sealing beam vertically extends and can be arranged on the first door body in a reciprocating translation mode along the transverse direction of the first door body;

the two sealing blocks are respectively arranged at the upper end and the lower end of the sealing beam in a telescopic way;

the first driving mechanism is used for driving the sealing beam to transversely reciprocate and translate;

the second driving mechanism is used for driving the two sealing blocks to stretch and retract; and the refrigerator is configured to:

after the first door body and the second door body are both closed, the sealing beam is translated from a retracted state to a second door body to an extended state for sealing a gap between the first door body and the second door body, and the two sealing blocks are extended out of the sealing beam to respectively seal and abut against the top wall and the bottom wall of the box body; and is

Before the first door body and/or the second door body are opened, the sealing beam is translated from the extending state to the retracting state, and the two sealing blocks are retracted into the sealing beam.

Optionally, the second drive mechanism comprises: the second motor is fixed in the sealing beam, and a rotating shaft of the second motor is horizontally arranged; a turntable coaxially fixed to the rotation shaft; the two ends of the upper connecting rod are respectively hinged with the sealing block and the rotary table at the upper end of the sealing beam; the two ends of the lower connecting rod are respectively hinged with the sealing block and the rotary table at the lower end of the sealing beam; so that the upper connecting rod and the lower connecting rod are driven to pull the two sealing blocks to retract into the sealing beam or push the two sealing blocks to extend out of the sealing beam by rotating the turntable.

Optionally, the upper connecting rod and the lower connecting rod have the same length, and the hinge points of the upper connecting rod and the lower connecting rod on the turntable are located on the periphery of the turntable and are arranged at 180 ° intervals.

Optionally, the seal beam is located inboard of the first door body.

Optionally, the front part of the sealing beam is provided with a sealing strip capable of translating back and forth; after the sealing beam enters the extending state, the sealing strip is moved forwards to a position where the sealing strip is in sealing contact with the inner surface of the first door body; the seal bar is moved rearwardly out of contact with the first door body interior surface before the seal bar is translated away from the extended condition.

Optionally, the second drive mechanism further comprises: the front end of the screw rod extends forwards and backwards, and is screwed into the threaded hole formed in the back surface of the sealing strip inwards, so that the sealing strip is driven to move forwards and backwards by changing the depth of the screw rod screwed into the threaded hole through rotating the screw rod.

Optionally, the second drive mechanism further comprises: the first gear is arranged on a rotating shaft of the second motor; and the second gear is arranged on the lead screw and is meshed with the first gear, so that when the second motor drives the turntable to rotate, the first gear is synchronously driven to rotate, and the lead screw is driven to rotate.

Optionally, the inner surface of the second door body has a vertically extending fixed beam at a position near the open end; and the sealing beam is in sealing contact with the fixed beam when in the extending state so as to seal a gap between the first door body and the second door body.

Optionally, the refrigerator further comprises: the door opening sensing device is used for generating a door opening sensing signal when sensing the action of opening the first door body or the second door body by a user; the door closing sensing device senses that the first door body and the second door body are both closed and then generates a door closing sensing signal; and the controller is configured to control the first driving mechanism and the second driving mechanism to respectively drive the sealing beam and the two sealing blocks to correspondingly translate according to the received door opening sensing signal and door closing sensing signal.

Optionally, the refrigerator further comprises: the emergency sensing device is arranged on the side surface of the sealing beam facing the second door body and is configured to generate an emergency sensing signal when sensing that an object enters a gap between the first door body and the second door body in the translation process of the sealing beam in the extending state; and the controller is also configured to control the first driving mechanism to stop working after receiving the emergency induction signal.

The refrigerator adopts the sealing beam to replace the traditional rotating vertical beam to seal the gap between the two oppositely-opened door bodies, and has novel and ingenious structure. In the invention, the motion mode of the sealing beam is translational reciprocating motion, and compared with the traditional rotating vertical beam, the sealing beam is easy to cling to the second door body with larger pressure, so that the sealing performance is better. Moreover, the rotating vertical beam can impact the box body or the door body under the action of elasticity after the door is opened and closed, so that great impact noise is generated. The translational motion of the sealing beam can avoid the defect.

After the two door bodies are closed, the two sealing blocks at the upper end and the lower end of the sealing beam are sealed and abutted against the top wall and the bottom wall of the box body, so that the upper end and the lower end of the sealing beam are well sealed with the inner wall of the box body. Before the two door bodies are opened, the two sealing blocks are retracted into the sealing beam and are not contacted with the box body any more, so that the sealing blocks are prevented from rubbing against the box body when the first door body is opened subsequently, and the problems of energy consumption and noise caused by friction are avoided.

Furthermore, the refrigerator converts the rotation of the second motor into the extending and retracting movement of the two sealing blocks by utilizing the turntable and the two connecting rods, has a very ingenious structure, is simple in structure, is low in design and processing cost, and is high in reliability.

Furthermore, in the refrigerator, after the sealing beam enters the extending state, the sealing strip at the front part of the sealing beam extends forwards to be in sealing contact with the inner surface of the first door body, so that the sealing performance is better. And before the sealing beam is translated away from the extended state, the sealing strip is moved back to be out of contact with the inner surface of the first door body. Therefore, when the sealing beam translates subsequently, friction cannot be generated between the front surface of the sealing beam and the first door body, and the problems of energy consumption and noise caused by friction are avoided.

Furthermore, the refrigerator of the invention utilizes a second motor to drive the rotating disc and the first gear simultaneously, so that the sealing block and the sealing strip realize synchronous translation, and the design of the movement mechanism is very fine and ingenious.

Further, the refrigerator of the invention arranges the sealing beam on the inner surface of the first door body, and the sealing beam is matched with the fixed beam arranged on the inner surface of the second door body in a sealing way. Compared with the scheme that the sealing beam directly seals the inner surface of the second door body, the invention can enable the sealing beam to be directly pressed on the fixed beam with larger pressure, thus undoubtedly enabling the sealing performance to be better.

Furthermore, the refrigerator automatically controls the translation process of the sealing beam by sensing the door opening action and the door closing action of a user, so that the movement precision of the sealing beam is higher, and the user saves more labor. Meanwhile, the automation level of the refrigerator and the grade of the refrigerator are improved, and the user experience is enhanced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic view of a refrigerator according to an embodiment of the present invention when two door bodies are closed;

FIG. 2 is a schematic view of the refrigerator shown in FIG. 1 with both door bodies open;

FIG. 3 is a schematic top view of a refrigerator according to an embodiment of the present invention when two door bodies are closed and the sealing beam is in a retracted state;

FIG. 4 is an enlarged view of the refrigerator shown in FIG. 3 at A;

FIG. 5 is a schematic view illustrating an inner structure of a first door body in the refrigerator of FIG. 3;

FIG. 6 is a schematic top view of the refrigerator of FIG. 3 with the seal beam translated to an extended condition;

FIG. 7 is an enlarged view of the refrigerator shown in FIG. 6 at B;

FIG. 8 is a schematic view showing an inner structure of a first door body in the refrigerator of FIG. 6;

FIG. 9 is another inner construction view of the first door body in the refrigerator of FIG. 3;

FIG. 10 is another inner construction view of the first door body in the refrigerator of FIG. 6;

fig. 11 is a schematic block diagram of a refrigerator according to an embodiment of the present invention;

fig. 12 is a side view schematically illustrating a first door body in the refrigerator of fig. 3.

Detailed Description

The refrigerator according to the embodiment of the present invention will be described with reference to fig. 1 to 12, and the orientations or positional relationships indicated by "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", "lateral", etc. in the description of the embodiment of the present invention are based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, cannot be construed as limiting the present invention.

FIG. 1 is a schematic view of a refrigerator according to an embodiment of the present invention when two door bodies are closed; fig. 2 is a schematic view of the refrigerator shown in fig. 1 when both door bodies are opened.

As shown in fig. 1 and 2, a refrigerator according to an embodiment of the present invention may generally include a cabinet 10 and two door bodies. The two door bodies are respectively a first door body 20 and a second door body 30. The cabinet 10 defines a storage compartment 11. The first door 20 and the second door 30 are attached to the front side of the cabinet 10 so as to be left-right-side-opened. Taking the illustrated structure as an example, the pivoting end (the right end in the state of fig. 1) of the first door body 20 is rotatably mounted to the right end of the front side of the cabinet 10 about a vertical axis, and the pivoting end (the left end in the state of fig. 1) of the second door body 30 is rotatably mounted to the left end of the front side of the cabinet 10 about a vertical axis. When the two doors close the storage compartment 11, a gap is formed between the open end (left end in the state of fig. 1) of the first door 20 and the open end (right end in the state of fig. 1) of the second door 30 (refer to fig. 1).

In order to seal the gap between the two door bodies, the refrigerator is provided with a sealing beam 50. The sealing beam 50 extends in the vertical direction and is mounted to the first door body 20 in a reciprocating translational manner along the lateral direction of the first door body 20. The lateral direction of the first door body 20 refers to a direction parallel to the x-axis. The refrigerator also has two seal blocks 54, 55 which are telescopically mounted up and down to the upper and lower ends of the seal beam 50, respectively.

In the embodiment of the present invention, after the first door body 20 and the second door body 30 are both closed, the seal beam 50 is translated toward the second door body 30 from a retracted state, and finally moved to an extended state for sealing a gap between the first door body 20 and the second door body 30, referring to fig. 1. And, two sealing

blocks

54, 55 are made to project beyond the sealing beam 50 to seal against the top and bottom walls of the cabinet 10 (actually referred to as the top and bottom walls of the storage compartment 11), respectively. That is, the left and right sides of the seal beam 50 are respectively sealed to the open ends of the second door body 30 and the first door body 20, and the top and bottom seal blocks 54 and 55 of the seal beam 50 are respectively sealed to the top and bottom walls of the cabinet 10, so that the gap between the first door body 20 and the second door body 30 is completely sealed.

In order to ensure tightness, the sealing beam 50 is necessarily tightly, tightly or even locked to the second door body 30 when in the extended state. Therefore, before the first door body 20 and/or the second door body 30 are opened, the seal beam 50 is translated from the extending state to the retracting state, so that the constraint of the seal beam 50 on the second door body 30 is relieved, and the opening of one door body is not influenced by the other door body. At the same time, both seal blocks are retracted into the seal beam 50, see fig. 2. Therefore, the sealing blocks 54 and 55 are prevented from rubbing against the top wall and the bottom wall of the box body 10 when the first door body 20 is subsequently opened, and the problems of energy consumption and noise caused by friction are avoided.

The refrigerator also comprises a first driving mechanism for driving the sealing beam to transversely reciprocate and a second driving mechanism for driving the two sealing

blocks

54 and 55 to extend and retract. The specific structure of the two drive mechanisms will be described later.

The refrigerator adopts the sealing beam 50 to replace the traditional rotating vertical beam to seal the first door body 20 and the second door body 30 which are split, and the structure is simple and novel. The movement form of the sealing beam 50 is translational reciprocating movement, and compared with the rotating vertical beam, the sealing beam is easy to be attached to the second door body 30 with larger pressure, so that the sealing performance is better. And the rotating vertical beam can return under the action of elasticity after the door is opened and closed, and the box body or the door body can be impacted under the action of the elasticity to generate impact noise. The translationally moving seal beam 50 avoids this disadvantage.

FIG. 3 is a schematic top view of a refrigerator according to an embodiment of the present invention when two door bodies are closed and the sealing beam is in a retracted state; FIG. 4 is an enlarged view of the refrigerator shown in FIG. 3 at A; FIG. 5 is a schematic view illustrating an inner structure of a first door body in the refrigerator of FIG. 3; FIG. 6 is a schematic top view of the refrigerator of FIG. 3 with the seal beam translated to an extended condition; FIG. 7 is an enlarged view of the refrigerator shown in FIG. 6 at B; fig. 8 is a schematic view of an inner structure of the first door body in the refrigerator of fig. 6.

An alternative form of the second drive mechanism 100 of the present invention will now be described with reference to figures 3 to 8.

Referring first to fig. 3-5, the seal beam 50 is shown in a retracted position and the two seal blocks 54, 55 are shown retracted into the seal beam 50. Specifically, the second driving mechanism 100 includes a second motor 110, a turntable 170, an upper link 171, and a lower link 172. The second motor 110 is fixed inside the seal beam 50, and a rotating shaft 111 thereof is horizontally disposed. The turntable 170 is coaxially fixed to the rotation shaft 111. The upper link 171 has both ends respectively hinged to the sealing block 54 and the turntable 170 at the upper end of the sealing beam 50. The two ends of the lower connecting rod 172 are respectively hinged to the sealing block 55 and the rotary disc 170 at the lower end of the sealing beam 50. After the second motor 110 is turned on, the turntable 170 is driven to rotate, the turntable 170 drives the upper connecting rod 171 and the lower connecting rod 172 to perform planar motion, and the two connecting rods push the two sealing

blocks

54 and 55 to extend out of the sealing beam 50, and finally the state shown in fig. 6 to 8 is achieved.

In the state shown in fig. 6 to 8, the second motor 110 is turned on again to rotate reversely, so that the turntable 170 rotates to drive the upper link 171 and the lower link 172 to pull the sealing blocks 54, 55 to retract into the sealing beam 50 again, i.e. to return to the state shown in fig. 3 to 5. Of course, the second motor 110 may be rotated in the same direction all the time, and the two sealing

blocks

54 and 55 may be driven to extend and retract.

The upper link 171 and the lower link 172 may have the same length, and the hinge points M and N of the two links on the rotating disc 170 are located at the periphery of the rotating disc 170 and are arranged 180 ° apart. This allows the two sealing

blocks

54, 55 to be moved by the same distance. One of the two sealing blocks is prevented from extending long, and the other sealing block is prevented from extending short.

It will be appreciated that the farther the hinge points M and N are from the center of the turntable 170, the longer the seal blocks 54, 55 move when the turntable 170 is rotated the same angle. Therefore, in order to ensure a sufficient moving distance of the sealing blocks 54, 55 and to avoid designing a too large turntable 170, it is preferable to arrange the hinge points M and N at the periphery of the turntable 170.

The invention utilizes a turntable 170 and two connecting rods to convert the rotation of the second motor 110 into the extending and retracting movement of the two sealing

blocks

54 and 55, has skillful structure, simple structure, lower design and processing cost and high reliability.

As shown in fig. 3 to 8, in some embodiments, the seal beam 50 is located on the inner side of the first door body 20 to prevent the arrangement of the seal beam 50 from affecting the appearance of the first door body 20. It is also possible to have the front portion of the sealing beam 50 with a sealing strip 56 that can translate back and forth. After the seal beam 50 is brought into the extended condition, the seal bar 56 is advanced to a position sealing against the inner surface of the first door body 20, as best seen in FIGS. 7 and 8. At this time, the seal beam 50 forms a good seal with the inner surface of the first door body 20. Before the sealing beam 50 translates away from the extended position, the sealing strip 56 is moved back out of contact with the inner surface of the first door 20, and no friction is generated between the front surface of the sealing beam 50 and the inner surface of the first door 20 during subsequent translation. That is, the sealing beam 50 can be moved to the retracted state smoothly, please refer to fig. 3 and 4.

The driving manner of the sealing tape 56 will be described below. As shown in fig. 4 and 7, the second driving mechanism 100 further includes a lead screw 140 extending forward and backward. The front end of the screw 140 is screwed into a threaded hole 561 formed in the rear surface of the sealing strip 56. I.e., the lead screw 140 and the seal bar 56 constitute a lead screw nut mechanism. When the screw 140 is driven to rotate, the sealing strip 56 does not rotate, so that the depth of the screw 140 screwed into the threaded hole 561 is changed, and the sealing strip 56 is caused to translate back and forth.

As shown in fig. 4, the lead screw 140 may be supported by two bearings 150 mounted to the seal beam 50.

A motor may be additionally provided to drive the lead screw 140 to rotate, but it is preferable to still use the second motor 110 to drive the lead screw 140. As shown in fig. 4 and 7, the second driving mechanism 100 further includes a first gear 120 and a second gear 130. The first gear 120 is mounted to the rotation shaft 111 of the second motor 110. The second gear 130 is mounted on the lead screw 140 and is engaged with the first gear 120. When the second motor 110 drives the turntable 170 to rotate, the first gear 120 is synchronously driven to rotate, and the lead screw 140 is driven to rotate.

The invention uses a second motor 110 to drive the rotating disc 170 and the first gear 120 simultaneously, so that the sealing blocks 54, 55 and the sealing strip 56 realize synchronous translation, and the design of the motion mechanism is very fine and ingenious. It should be noted here that the gear ratio of the gears and the pitch of the lead screw 140 should be selected such that the sealing blocks 54, 55 and the sealing strip 56 are moved to the respective positions at the same time, which will not be described in detail.

FIG. 9 is another inner construction view of the first door body in the refrigerator of FIG. 3; fig. 10 is another internal configuration view of the first door body in the refrigerator of fig. 6.

An alternative form of the first drive mechanism of the present invention will now be described with reference to figures 9 and 10. As shown in fig. 9 and 10, the first drive mechanism 60 includes a first motor 61, a third gear 62, and a rack gear 63. The first motor 61 is fixed to the first door 20. The third gear 62 is driven by the first motor 61. The rack 63 is used for being meshed with the third gear 62, and the rack 63 is fixed on the sealing beam 50 and the length direction of the rack is parallel to the transverse direction of the first door body 20. When the first motor 61 drives the third gear 62 to rotate, the third gear 62 drives the rack 63 to translate along the transverse direction of the first door 20, so as to drive the sealing beam 50 to translate. It will be appreciated that the first motor 61 should be a motor capable of controlled positive and negative rotation. The refrigerator changes the translational direction of the seal beam 50 by switching the rotational direction of the first motor 61. For example, when the first motor 61 is rotated forward, the seal beam 50 is driven to translate from the retracted state illustrated in fig. 10 to the extended state illustrated in fig. 9. When the first motor 61 is reversed, the seal beam 50 is driven to translate from the extended condition illustrated in fig. 9 to the retracted condition illustrated in fig. 10.

As shown in fig. 9 and 10, the first door body 20 may be provided with at least one guide groove 22 horizontally extending in a lateral direction thereof. The sealing beam 50 has at least one guide post 53 to define the direction of translation of the sealing beam 50 by the guide slot 22. I.e. so that the sealing beam 50 can only translate in the horizontal transverse direction. The number of the at least one guide groove 22 is preferably two, and the two are arranged up and down. The number of the first driving mechanisms 60 is also preferably two, and the two first driving mechanisms 60 respectively drive the upper half part and the lower half part of the sealing beam 50, so that the translation of the sealing beam 50 is more stable and accurate.

In some embodiments, as shown in fig. 2 and 3, a fixing beam 40 may be protruded backward from an inner surface of the second door 30 (a surface of the second door 30 facing the inside of the storage compartment 11 when being closed) at a position close to the open end, and the fixing beam 40 may extend in a long strip shape in a vertical direction. The sealing beam 50 is in a protruding state, and is in sealing contact with the fixing beam 40 to seal a gap between the first door body 20 and the second door body 30.

Further, the outer end surface of the seal beam 50 may have a convex portion 51 protruding outward, and the convex portion 51 may extend in a long strip shape in the vertical direction. The fixing beam 40 is opened with a groove 41 matching the position and shape of the projection 51 for receiving the projection 51. The projection 51 is inserted into the groove 41 when the seal beam 50 is in the extended state. The structure has at least two advantages, firstly, the locking between two door bodies can be realized, the door bodies are not easy to shake after being closed, and the sealing performance is better. And compared with two plane contact seals, the plug-in structure has better sealing performance obviously.

As shown in fig. 3, a sealing sheet 43 is disposed in the recess 41, and the sealing sheet 43 may be made of a rubber strip or other material with elasticity and suitable sealing property. When the sealing beam 50 is in the extended state, the projection 51 abuts against the sealing plate 43, which can further improve the sealing performance.

The above embodiment describes the case where the refrigerator has only two door bodies. Of course, the refrigerator may have other door bodies than the two door bodies. In the above embodiment, the door body located on the right side in the drawing is the first door body 20, and the seal beam 50 is provided thereon. It is understood that the first door body 20 may be disposed on the left side and the second door body 30 may be disposed on the right side.

Fig. 11 is a schematic block diagram of a refrigerator according to an embodiment of the present invention. As shown in fig. 11, in some embodiments, the refrigerator further includes a door opening sensing device 90, a door closing sensing device 70, and a controller 80.

The door opening sensing device 90 is used for sensing the user's action of opening the first door body 20 and the second door body 30. When the door opening sensing device 90 senses an action of opening the first door body 20 or the second door body 30 by a user, a door opening sensing signal is generated. The door opening sensing device 90 may specifically include two infrared sensors disposed on the handle portion 21 of the first door body 20 and the handle portion 31 of the second door body 30. When a human hand enters the

handle parts

21 and 31 to open the door, the infrared sensor senses the approach of the human hand and generates the door opening sensing signal.

The door closing sensing device 70 is used for sensing whether both the first door body 20 and the second door body 30 are closed. When the door closing sensing device 70 senses that both the first door body 20 and the second door body 30 are closed, a door closing sensing signal is generated. The door closing sensing device 70 may be, for example, an infrared distance sensor disposed on the front surface of the cabinet 10 or on the inner surfaces of the two doors, and when the infrared distance sensor detects that the distances between the inner surfaces of the two doors and the front surface of the cabinet 10 are both smaller than a preset threshold, it is determined that the two doors are both closed.

The controller 80 is electrically connected to the door opening sensing device 90 and the door closing sensing device 70, and is configured to control the first driving mechanism 60 to drive the sealing beam 50 to make corresponding translation according to the door opening sensing signal and the door closing sensing signal received. Specifically, after receiving the door opening sensing signal, the controller 80 controls the first driving mechanism 60 to drive the sealing beam 50 to translate to the retracted state, and controls the second driving mechanism 100 to drive the sealing strip 56 to move backward to be separated from the first door 20. After receiving the door closing sensing signal, the controller 80 controls the first driving mechanism 60 to drive the sealing beam 50 to move horizontally to the extended state, and controls the second driving mechanism 100 to drive the sealing strip 56 to move forward to abut against the inner surface of the first door body 20.

In some embodiments, the controller 80 may control the seal beam 50 to translate to the extended state after receiving the door closing sensing signal for a predetermined time (e.g., 0.5s, 1s, 2s, or 3 s). Therefore, the two door bodies can be ensured to be normally closed for a long time, and the accident that the user opens the door bodies immediately after closing the door bodies temporarily is eliminated.

The refrigerator automatically controls the translation of the sealing beam 50 by sensing the door opening action and the door closing action, so that the movement precision of the sealing beam 50 is higher, and a user saves more labor. Meanwhile, the automation level of the refrigerator and the grade of the refrigerator are improved, and the user experience is enhanced.

Fig. 12 is a side view schematically illustrating a first door body in the refrigerator of fig. 3. As shown in fig. 11 and 12, the refrigerator may further include an emergency sensing device 91. The emergency sensing device 91 is mounted on a side surface of the sealing beam 50 facing the second door body 30, and may specifically include a plurality of infrared sensors. In the process that the sealing beam 50 translates towards the extended state, the emergency sensing device 91 generates an emergency sensing signal when sensing that an object enters a gap between the first door body 20 and the second door body 30. The controller 80 is electrically connected to the emergency sensing device 91. After receiving the emergency sensing signal, the controller 80 controls the first driving mechanism 60 to stop working, so as to prevent the moving sealing beam 50 from being clamped to a human hand.

Of course, when the emergency sensing device 91 senses that the object leaves the gap between the first door body 20 and the second door body 30 for a preset time (e.g., a short time such as 1s or 2 s), the first driving mechanism 60 is still controlled to continue to operate, and the sealing beam 50 is driven to continue to translate in the extending direction.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A refrigerator, comprising:

a box body;

the sealing beam extends vertically and can be mounted on the first door body in a reciprocating translation mode along the transverse direction of the first door body;

the two sealing blocks are respectively arranged at the upper end and the lower end of the sealing beam in a vertically telescopic manner;

after the first door body and the second door body are both closed, the sealing beam is made to translate from a retracted state to an extended state for sealing a gap between the first door body and the second door body, and the two sealing blocks are made to extend out of the sealing beam to respectively seal and abut against the top wall and the bottom wall of the box body; and is

Before the first door body and/or the second door body are opened, the sealing beam is enabled to translate from the extending state to the retracting state, and the two sealing blocks are enabled to retract into the sealing beam.

2. The refrigerator of claim 1, wherein the second drive mechanism comprises:

the second motor is fixed in the sealing beam, and a rotating shaft of the second motor is horizontally arranged;

a turntable coaxially fixed to the rotation shaft;

the two ends of the upper connecting rod are respectively hinged with the sealing block at the upper end of the sealing beam and the turntable; and

the two ends of the lower connecting rod are respectively hinged to the sealing block at the lower end of the sealing beam and the rotary table;

so that the upper connecting rod and the lower connecting rod are driven to pull the two sealing blocks to retract into the sealing beam or push the two sealing blocks to extend out of the sealing beam by rotating the turntable.

3. The refrigerator of claim 2, wherein

The upper connecting rod and the lower connecting rod are identical in length, and hinged points of the upper connecting rod and the lower connecting rod on the rotary table are located on the periphery of the rotary table and are arranged at intervals of 180 degrees.

4. The refrigerator of claim 2, wherein

The sealing beam is positioned on the inner side of the first door body.

5. The refrigerator of claim 4, wherein

The front part of the sealing beam is provided with a sealing strip capable of translating back and forth; and is

After the sealing beam enters the extending state, the sealing strip is moved forwards to a position where the sealing strip is in sealing contact with the inner surface of the first door body;

and before the sealing beam is horizontally moved away from the extending state, the sealing strip is moved backwards to be separated from the contact with the inner surface of the first door body.

6. The refrigerator of claim 5, wherein the second drive mechanism further comprises:

and the front end of the lead screw extends forwards and backwards and is screwed into the threaded hole formed in the back surface of the sealing strip inwards, so that the sealing strip is driven to translate forwards and backwards by changing the screwing depth of the lead screw into the threaded hole through rotating the lead screw.

7. The refrigerator of claim 6, wherein the second drive mechanism further comprises:

the first gear is arranged on a rotating shaft of the second motor; and

and the second gear is arranged on the screw rod and is meshed with the first gear so as to synchronously drive the first gear to rotate when the second motor drives the turntable to rotate, thereby driving the screw rod to rotate.

8. The refrigerator of claim 4, wherein

A vertically extending fixed beam is arranged at the position, close to the opening end, of the inner surface of the second door body; and is

The sealing beam is in sealing contact with the fixed beam when in the extending state so as to seal a gap between the first door body and the second door body.

9. The refrigerator of claim 1, further comprising:

the door opening sensing device is used for generating a door opening sensing signal when sensing the action of opening the first door body or the second door body by a user;

the door closing sensing device senses that the first door body and the second door body are both closed and then generates a door closing sensing signal; and

and the controller is configured to control the first driving mechanism and the second driving mechanism to respectively drive the sealing beam and the two sealing blocks to make corresponding translation according to the received door opening sensing signal and the door closing sensing signal.

10. The refrigerator of claim 9, further comprising:

the emergency sensing device is arranged on the side surface, facing the second door body, of the sealing beam and is configured to generate an emergency sensing signal when sensing that an object enters a gap between the first door body and the second door body in the process that the sealing beam translates towards the extending state; and is

The controller is further configured to control the first driving mechanism to stop working after receiving the emergency induction signal.