CN113883794B

CN113883794B - Refrigerator with a door

Info

Publication number: CN113883794B
Application number: CN202010636381.8A
Authority: CN
Inventors: 王宁; 杨廷超; 刘修东; 蒋孝奎
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2023-01-20
Anticipated expiration: 2040-07-03
Also published as: CN113883794A

Abstract

The invention provides a refrigerator, which comprises a refrigerator body with an inner container and a door body matched with the refrigerator body, wherein the door body is provided with a door lining, a storage space is formed between the door lining and the inner container, the door lining is provided with a door lining plate and a lining frame which extends backwards from the door lining plate to the inner side of the inner container, a frame opening part is formed in the refrigerator body, a sealing part which is opposite to the frame opening part is formed on the outer side of the lining frame of the door body, a door sealing strip which can be adsorbed to the frame opening part is arranged on the sealing part, the refrigerator also comprises an air bag which is fixed on one of the inner container and the lining frame to seal the storage space, a sealing groove which is concavely arranged on the other one of the inner container and the lining frame to be matched with the air bag, and an air pump which is matched with the air bag, and the air bag extends into the sealing groove after being inflated and forms sealing fit with the inner wall of the sealing groove in a sealing mode in a closed state. The invention can not only increase the sealing area of the air bag, but also increase the friction force between the matching wall and the air bag, reduce the door opening force of the air bag on the matching wall, ensure the fixing effect of the door body and the box body, and further improve the sealing effect.

Description

Refrigerator with a door

Technical Field

The invention relates to a refrigerator, in particular to a refrigerator with better heat preservation performance and lower power consumption.

Background

The existing refrigerator heat preservation mainly comprises the steps that a door seal is arranged on a door body to seal with a refrigerator body, the problem of cold leakage at the door seal still exists only by means of sealing through the door seal, and the heat load at the door seal approximately accounts for about 20% of the heat load of the whole refrigerator, so that a refrigerating system of the refrigerator needs to refrigerate frequently, and the power consumption is increased.

In view of the above, there is a need for an improved refrigerator to solve the above problems.

Disclosure of Invention

The invention aims to provide a refrigerator with better heat preservation performance and lower power consumption.

In order to achieve the purpose, the invention provides a refrigerator, which comprises a refrigerator body with an inner container and a door body matched with the refrigerator body, wherein the door body is provided with a door liner, a storage space is formed between the door liner and the inner container, the door liner is provided with a door liner plate and a liner frame which protrudes backwards from the door liner plate to the inner side of the inner container, a frame opening part is formed in the refrigerator body, a sealing part which is opposite to the frame opening part is formed on the outer side of the liner frame of the door body, a door seal strip which can be adsorbed to the frame opening part is arranged on the sealing part, the refrigerator further comprises an air bag which is fixed on one of the inner container and the liner frame to seal the storage space, a sealing groove which is concavely arranged on the other of the inner container and matched with the air bag and an air pump which is matched with the air bag, the air bag is fixed on the inner container, a groove and a fixing structure are formed on the position of the inner container, which is adjacent to the liner frame, the air bag is accommodated in the groove, the fixing part for fixing the air bag, the fixing part is matched with the fixing part of the air bag to fix the fixing part and is deformed along with the covering part of the air bag.

As a further improvement of the present invention, the airbag is fixed to the inner container, the lining frame has a fitting wall disposed adjacent to the inner container, the fitting wall is disposed to be inclined from the rear to the front toward the inner container, and the sealing groove is formed by being recessed from the fitting wall.

As a further improvement of the present invention, the matching wall has a first groove wall and a second groove wall which form the sealing groove and are connected in a front-to-back manner, the first groove wall is located at the rear side of the second groove wall, the first groove wall extends vertically from the matching wall toward the door liner, and the second groove wall extends obliquely forward from the end of the first groove wall toward the inner wall of the inner container adjacent to the matching wall.

As a further improvement of the present invention, the matching wall has a first groove wall and a second groove wall which form the sealing groove and are connected in a front-to-back manner, the first groove wall is formed by extending obliquely forward from the matching wall in a direction away from the inner wall of the inner container adjacent to the matching wall, and the second groove wall is formed by extending obliquely forward from the end of the first groove wall in a direction toward the inner wall of the inner container adjacent to the matching wall.

As a further improvement of the invention, the acute included angle between the first groove wall and the horizontal line along the front-back direction is larger than the acute included angle between the second groove wall and the horizontal line along the front-back direction, and the length of the first groove wall is smaller than that of the second groove wall.

As a further improvement of the invention, the length of the first groove wall is greater than that of the second groove wall, the acute included angle between the first groove wall and a horizontal line in the front-back direction is smaller than that between the second groove wall and the horizontal line in the front-back direction, and the air bag is contacted with the first groove wall when being expanded to seal the storage space.

As a further improvement of the invention, the matching wall is provided with a first groove wall and a second groove wall which form the sealing groove and are connected in a front-back manner, the first groove wall is formed by extending forwards from the matching wall in an inclined manner in a direction away from the inner wall of the inner container adjacent to the matching wall, the second groove wall is formed by extending forwards from the tail end of the first groove wall in an inclined manner in a direction away from the inner wall of the inner container adjacent to the matching wall, and the air bag is inflated to form sealing matching with the first groove wall and the second groove wall in a closed state.

As a further improvement of the invention, the air bag is of a multi-section structure, two adjacent sections are communicated with each other through air holes, and the diameter of each air hole is smaller than that of each section of the air bag after the air bag is expanded.

As a further improvement of the invention, the liner is provided with an inner wall adjacent to the lining frame, and the outer wall of the fixing piece adjacent to the lining frame is flush with the inner wall of the liner in the door opening state.

As a further improvement of the invention, the inner container is provided with an inner container body and a connecting piece fixed at the front end of the inner container body, and the groove and the fixing structure are formed on the connecting piece.

The invention has the beneficial effects that: according to the refrigerator, the sealing groove matched with the air bag is concavely arranged on the inner container or the lining frame, and the air bag extends into the sealing groove after being inflated and forms sealing fit with the inner wall of the sealing groove in a door closing state. Not only can increase the sealing area of gasbag, but also can increase the frictional force of cooperation wall and gasbag, reduce the gasbag to the power of opening the door of cooperation wall, guarantee the fixed effect of door body and box to improve sealed effect.

Drawings

Fig. 1 is a perspective view schematically illustrating a refrigerator according to the present invention.

Fig. 2 is an exploded side view of the refrigerator of the present invention.

Fig. 3 is an exploded perspective view of the refrigerator of the present invention.

Fig. 4 is a sectional view of an air bag for a refrigerator according to the present invention.

Fig. 5 is an exploded sectional view of the fixing member and the inner container.

Fig. 6 is a sectional view of another embodiment of the air bag for a refrigerator of the present invention.

Fig. 7 is a cross-sectional view of the balloon of fig. 6 after inflation.

Fig. 8 is a sectional view of a second embodiment of a refrigerator door liner of the present invention.

Fig. 9 is a cross-sectional view of the balloon of fig. 8 after inflation.

Fig. 10 is a sectional view of a third embodiment of a refrigerator door liner of the present invention.

Fig. 11 is a sectional view of a fourth embodiment of a refrigerator door liner of the present invention.

Fig. 12 is a sectional view of a fifth embodiment of a refrigerator door liner of the present invention.

Fig. 13 is a sectional view of the inside of an evaporation chamber of a refrigerator according to the present invention.

Fig. 14 is an enlarged view at a in fig. 13.

Fig. 15 is a flowchart of a control method of a refrigerator of the present invention.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the accompanying drawings. This embodiment is not intended to limit the invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in view of this embodiment are intended to be within the scope of the invention.

Fig. 1 to 15 show an embodiment of a refrigerator according to the present invention, the refrigerator includes a refrigerator body 1 having an inner container 11, and a door 2 engaged with the refrigerator body 1, the door 2 has a door liner 21, a storage space 12 is formed between the door liner 21 and the inner container 11, the door liner 21 has a door liner 211 and a liner frame 212 protruding rearward from the door liner 211 to an inner side of the inner container 11, the refrigerator body 1 has a frame opening 13, the door 2 has a sealing portion 22 formed on an outer side of the liner frame 212 and opposed to the frame opening 13, the sealing portion 22 is provided with a door seal 23 capable of being attached to the frame opening 13, the refrigerator further includes an air bag 3 fixed to one of the inner container 11 and the liner frame 212 to seal the storage space 12, a sealing groove 24 recessed in the other to be engaged with the air bag 3, and an air pump 5 engaged with the air bag 3, and in a state where the air bag 3 is inserted into the sealing groove 24 and is engaged with an inner wall of the sealing groove 24.

Specifically, as shown in fig. 1 to 5, in the present embodiment, the door opening side of the refrigerator is described as being located on the left side, but in other embodiments, the door opening side may be located on the right side. As shown in fig. 1, the door body 2 is not shown with a door shell, and only the door liner 21 is shown. The lining frame 212 is formed by protruding backwards from the periphery of the door lining board 211, and the air bag 3 mainly seals the inner wall 115 of the inner container 11 and the lining frame 212, so that the sealing effect is further enhanced. Of course, the airbag 3 may be disposed in a ring shape in cooperation with the inner wall 115 and the cushion frame 212, or may be disposed only at a partial position between the inner wall 115 and the cushion frame 212.

In this embodiment, the lining frame 212 has a fixing wall 213 on the inner side and a fitting wall 214 on the outer side, the fixing wall 213 is mainly used for setting a bottle seat, the airbag 3 is located between the fitting wall 214 and the inner wall 115 of the inner bag 11 to seal the storage space 12, and the sealing portion 22 extends from the front side of the fitting wall 214 in the transverse direction.

In this embodiment, the door seal 23 not only seals the storage space 12, but also fixes the door 2 and the cabinet 1, and seals the inner wall 115 of the inner bag 11 and the lining frame 212 by combining the airbag 3, i.e., seals only the contact surfaces (the sealing portion 22 and the matching wall 214) of the door 2 and the cabinet 1, thereby further improving the sealing effect and reducing the influence of the external environment on the temperature in the storage space 12.

The door gasket 23 includes a fixing leg 231 fixed to the sealing portion 22, and a sealing body 232 extending backward from the fixing leg 231, wherein the sealing body 232 has a main air chamber and an auxiliary air chamber disposed adjacently, and a magnetic element is disposed in the main air chamber or the auxiliary air chamber to be attracted and matched with the magnetic element on the frame opening portion 13, so as to maintain the closed state of the door body 2.

Because the outer shell 14 of the box body 1 is made of metal material, and the front side of the outer shell 14 is provided with a bent edge, the bent edge is a magnetic element, and therefore, the magnetic element can be directly adsorbed on the bent edge. Certainly, in order to reduce the production cost and reduce heat exchange, the main air chamber or the auxiliary air chamber can be provided with no magnetic element, and the air chamber provided with the magnetic element provides a further deformation space for the door seal, so that the sealing effect is improved. (this structure can be realized by matching with the structure of the lining frame 212 or the structure of the liner 11, see the following embodiments for details)

As shown in fig. 4 and 5, the refrigerator further has a fixing member 4 for fixing the airbag 3, and the fixing member 4 has a deformation portion 41 covering the outside of the airbag 3 and elastically deformed with the inflation and deflation of the airbag 3, and a fixing portion 42 connected to the deformation portion 41 to be fixed to the inner container 11 or the liner frame 212.

In this embodiment, the airbag 3 is fixed on the inner container 11, specifically, on the inner side wall of the inner container 11 adjacent to the lining frame 212, a groove 111 and a fixing structure 112 are formed at a position on the inner container 11 adjacent to the matching wall 214, the airbag 3 is accommodated in the groove 111, and the fixing member 4 is fixed outside the airbag 3 by matching the fixing structure 112 with the fixing portion 42. Of course, in other embodiments, the lining frame 212 may also be provided with a groove 111 and a fixing structure 112 for accommodating the airbag 3.

Specifically, in this embodiment, the liner 11 has a liner body 113 and a connecting member 114 fixed at the front end of the liner body 113, the groove 111 and the fixing structure 112 are formed on the connecting member 114, and since the liner 11 is usually formed by vacuum forming, it is not easy to set the fixing structure 112 on the surface thereof, and therefore, by setting the connecting member 114 at the front end of the liner body 113, the groove 111 and the fixing structure 112 are conveniently set on the connecting member 114, thereby facilitating the assembly of the fixing member 4.

The connecting member 114 is generally a plastic member and is disposed around the front end of the inner container body 113, in this embodiment, the fixing structures 112 are disposed on the front and rear sides of the groove 111, and each fixing structure 112 has a slot 1121 recessed from the surface of the connecting member 114 and a limiting slot 1122 disposed on one side of the slot 1121.

The connecting member 114 further has a liner fixing end 1141 connected to the rear fixing structure 112 to be fixed to the liner body 113, and a case fixing end 1142 connected to the front fixing structure 112 to be fixed to the metal case 14 of the case 1, wherein the liner fixing end 1141 extends rearward, and the case fixing end 1142 extends outward along the transverse direction, so that the connecting member 114, the liner body 113 and the case 14 together form a foaming chamber. In this embodiment, the connecting member 114 can bond the inner container fixing end 1141 to the inner container body 113 through an adhesive, and the outer container fixing end 1142 is fixed by matching with the U-shaped groove of the outer container 14, but in other embodiments, the connecting member 114 can also be provided with a matching structure for fixing with the inner container body 113.

In this embodiment, the fixed part 42 of mounting 4 set up respectively in both sides around the department of deformation 41, so that with recess 111 and fixed knot construct 112 cooperate, wherein, the department of deformation 41 with the plastic that the fixed part 42 is different materials respectively forms through soft or hard crowded technology altogether, and the department of deformation 41 adopts the material that extremely easily warp promptly, and fixed part 42 adopts non-deformable's material, realizes the common shaping of different materials through soft or hard crowded altogether, has improved the production efficiency of mounting 4. Of course, in other embodiments, the deformation portion 41 may be formed separately and assembled with the fixing portion 42 to form the fixing member 4.

In the present embodiment, the elastic modulus of the deformation portion 41 is smaller than that of the airbag 3, and the larger the elastic modulus is, the larger the rigidity is, that is, the deformation is less likely to occur, so that the deformation portion 41 is more likely to deform relative to the airbag 3, that is, the deformation portion 41 is deformed immediately as long as the airbag 3 exerts a force on the deformation portion 41, on one hand, the inflation amount of the airbag 3 is easily controlled, and on the other hand, damage to the airbag 3 caused by over-inflation of the airbag 3 can be avoided. Moreover, the deformation portion 41 is made of a wear-resistant material, so that the deformation portion 41 is not easily damaged by friction with the lining frame 212 even in a long-term use process.

The fixing portion 42 has a hook 421 and a limiting portion 422, which are engaged with the slot 1121 and the limiting slot 1122 of the fixing structure 112, wherein the hook 421 and the slot 1121 are engaged to realize the positioning in the transverse direction. The limiting portion 422 is engaged with the limiting groove 1122, so that the fixing effect of the hook 421 and the locking groove 1121 can be further enhanced.

On the other hand, during the long-term use of the refrigerator, the risk of damage to the hook 421 caused by the fixed portion 42 being pulled by the deformation portion 41 being deformed frequently is reduced, and meanwhile, the installation is facilitated. Therefore, by arranging the fixing member 4, the airbag 3 does not need to be additionally provided with the fixing structure 112, the airbag 3 only needs to be placed in the groove 111, and then the fixing member 4 is installed, so that the installation is simple and efficient.

In the door-open state, the outer wall (i.e., the deformation portion 41) of the fixing member 4 adjacent to the liner frame 212 is flush with the inner wall 115 of the inner bag 11, i.e., the airbag 3 is not inflated and the deformation portion 41 is in an undeformed state. At this time, the door 2 can be opened and closed smoothly without interference of the deformation portion 41.

In this embodiment, the lining frame 212 protrudes backward from the periphery of the door lining board 211, that is, the lining frame is disposed around the inner wall 115 of the inner container 11, and the airbag 3 is also disposed in a ring shape corresponding to the connecting member 114 and the lining frame 212; the annular air bag 3 can be arranged in a multi-section structure (not shown), two adjacent sections are communicated with each other through an air hole, and the inner diameter of the air hole is smaller than that of each section of the air bag 3. Each section of the air bag 3 is communicated through the air holes, so that the air convection in the air bag 3 can be effectively reduced, the heat exchange efficiency is obviously reduced, and the temperature influence on the storage space 12 is reduced.

In this embodiment, the matching wall 214 extends obliquely from back to front and toward the inner wall 115 of the inner container 11, which is to facilitate the door liner 21 to be demolded from the plastic male mold, but in other embodiments, the matching wall 214 may also extend in a direction perpendicular to the door liner 211, and in order to further enhance the sealing effect of the airbag 3, the matching wall 214 is further recessed with a sealing groove 24 matching with the airbag 3. By arranging the sealing groove 24, the sealing area of the air bag 3 is increased, on one hand, the sealing effect is increased, on the other hand, the friction force between the air bag 3 and the matching wall 214 is increased, the forward component force generated when the air bag 3 is pressed on the matching wall 214 is reduced, and the door body 2 is prevented from being opened.

Specifically, the matching wall 214 has at least two groove walls forming the sealing groove 24, and the more the groove walls forming the sealing groove 24 are, the larger the area of sealing with the airbag 3 is, the better the sealing effect is, and the larger the friction force is, the less the door body 2 is opened. In the present embodiment, the sealing groove 24 is disposed around the matching wall 214, so as to match with the annular bladder 3 to increase the sealing effect. Of course, in other embodiments, the sealing groove 24 may also be disposed at a local position of the matching wall 214, such as some places where cold leakage is easy, for example, a position near the opening side of the door body 2.

As shown in fig. 4, in the first embodiment of the door liner 21 of the refrigerator according to the present invention, the matching wall 214 has a first groove wall 241 and a second groove wall 242 which form the sealing groove 24 and are connected in a front-to-back manner, the first groove wall 241 is located at the rear side of the second groove wall 242, the first groove wall 241 is formed by extending from the matching wall 214 vertically toward the door liner 211, and the second groove wall 242 is formed by extending from the end of the first groove wall 241 toward the inner wall 115 of the inner container 11 adjacent to the matching wall 214 in an inclined manner.

Therefore, neither the first groove wall 241 nor the second groove wall 242 extends obliquely forward away from the inner wall 115 of the inner container 11 adjacent to the matching wall 214, and the door lining 21 is generally formed mainly by plastic suction, and a plastic suction male mold is adopted, so that when the door lining 21 is moved upward for demolding, no other external force is used for preventing the upward movement except for the friction force between the door lining 21 and the surface of the male mold during the upward movement, and the male mold is smoother, and meanwhile, the sealing effect is also increased.

When the airbag 3 is inflated, it may contact both the first groove wall 241 and the second groove wall 242, or may contact only one of them, wherein it is preferable that the airbag 3 contacts only the first groove wall 241 because the first groove wall 241 is formed to extend vertically toward the door liner 211, and the acting force of the airbag 3 on the first groove wall 241 has no forward component, so that the door opening force is not generated.

As shown in fig. 8 and 9, in the second embodiment of the door liner 21 of the refrigerator according to the present invention, the matching wall 214 has a first groove wall 241 and a second groove wall 242 which form the sealing groove 24 and are connected in front and rear, the first groove wall 241 is formed by extending from the matching wall 214 toward the inner wall 115 of the inner container 11 adjacent to the matching wall 214 in an inclined manner, that is, toward the door liner 211, and the second groove wall 242 is formed by extending from the end of the first groove wall 241 toward the inner wall 115 of the inner container 11 adjacent to the matching wall 214 in an inclined manner.

Specifically, in this embodiment, an acute angle between the first groove wall 241 and a horizontal line along the front-back direction is greater than an acute angle between the second groove wall 242 and a horizontal line along the front-back direction. Since the balloon 3 is in contact with both the first groove wall 241 and the second groove wall 242 when the balloon 3 is sealed.

Therefore, on the one hand, the acute angle included angle between the first groove wall 241 and the horizontal line along the front-rear direction is large, and the component force of the acting force of the airbag 3 on the first groove wall 241 in the backward direction is large, so that the door closing force can be formed to a certain extent, and the door body 2 is prevented from opening. On the other hand, the acute angle included angle between the second groove wall 242 and the horizontal line along the front-back direction is smaller, the forward component force of the air bag 3 on the second groove wall 242 is smaller, the door opening force can be reduced to a certain extent, and the door body 2 can be prevented from being opened under the action of the air bag 3 by matching with the fixing action of the door seal 23.

Further, the length of the first groove wall 241 is smaller than that of the second groove wall 242, and when the door liner 21 is demolded, since the first groove wall 241 is formed to extend obliquely forward from the mating wall 214 in a direction away from the inner wall 115 of the inner container 11 adjacent to the mating wall 214, and assuming that an included angle between the first groove wall 241 and a horizontal line in the transverse direction is a and the length of the first groove wall 241 is a, the first groove wall 241 must be moved by a distance of a × cosA in the transverse direction to enable smooth demolding of the door liner 21, and the smaller the length a of the first groove wall 241, the smaller the value of a × cosA, and the easier demolding.

In order to solve the problem that the air bag 3 generates the door opening force to the door liner 21 and further enable the air bag 3 to generate the door closing force to the door liner 21, the invention also provides a design which is a third embodiment of the door liner 21 of the refrigerator according to the invention as shown in fig. 10.

The airbag 3 is matched with the lining frame 212 to form an annular arrangement, the airbag 3 is fixedly arranged on one of the liner 11 and the lining frame 212, a limiting wall matched with the airbag 3 in a closed state of the door body 2 is formed on the other one of the liner 11 and the lining frame 212, the limiting wall extends from outside to inside in the transverse direction (namely, the limiting wall extends forwards in an inclined manner towards the direction far away from the inner wall 115 of the liner 11 adjacent to the matching wall 214), and the limiting wall is simultaneously arranged in an inclined manner from back to front. For convenience of description, the limiting wall is referred to as a first groove wall 241 hereinafter.

In the present embodiment, the airbag 3 is fixed to the inner wall 115 of the inner bag 11 (see the above-mentioned portion in detail), the first groove wall 241 is formed on the mating wall 214, specifically, the first groove wall 241 may be the mating wall 214, or may be a partial structure on the mating wall 214, and when the first groove wall 241 is the mating wall 214, the sealing portion 22 is formed to extend in the lateral direction from the front side of the first groove wall 241.

When the airbag 3 is inflated, the acting force of the airbag 3 on the first groove wall 241 has a component force in the backward direction, and the component force can fix the door body 2 and the box body 1, namely, a door closing force. When the included angle between the first groove wall 241 and the horizontal line along the front-back direction is larger, the door closing force is larger, the fixing effect of the door body 2 is better, and the demolding is difficult. And when the first groove wall 241 is the mating wall 214, i.e. there is no need to provide the remaining structure on the mating wall 214, it is also relatively simple when designing the male mold.

Of course, in other embodiments, the airbag 3 is fixed to the lining frame 212, and the first groove wall 241 is formed on the inner wall 115 of the inner container 11, and when the airbag 3 inflates, the first groove wall 241 can prevent the airbag 3 from moving forward, so as to prevent the door body 2 from opening.

As shown in fig. 11, there is a fourth embodiment of a door liner 21 of a refrigerator according to the present invention.

The matching wall 214 is formed with a sealing groove 24 matching with the airbag 3, and the matching wall 214 has at least two groove walls forming the sealing groove 24, wherein at least one groove wall is the limiting wall. When the air bag 3 is inflated and expanded, the air bag and the limit wall are matched to seal the storage space 12. This is because the direction of the force generated by the airbag 3 on the position-limiting wall is perpendicular to the contact surface of the groove wall, so that the force has a backward component, and finally the door body 2 is closed more firmly, that is, a door closing force is generated.

In this embodiment, the matching wall 214 has a limiting wall (i.e., a first groove wall 241) and a connecting wall (i.e., a second groove wall 242) that form the sealing groove 24 and are connected in a front-back manner, where the limiting wall is a rear inner wall of the sealing groove 24, and the connecting wall is a front inner wall of the sealing groove 24, and for convenience of description, the limiting wall is referred to as the first groove wall 241 and the connecting wall is referred to as the second groove wall 242.

The second groove wall 242 extends obliquely forward from the end of the first groove wall 241 toward the inner wall 115 of the inner container 11 adjacent to the matching wall 214, in this embodiment, the airbag 3 is only matched with the first groove wall 241 after being inflated to seal the storage space 12, because the airbag 3 is only contacted with the first groove wall 241, only the door closing force can be generated, and in other embodiments, the airbag 3 can also be contacted with the second groove wall 242, and only the forward component force (i.e. the door opening force) of the acting force of the airbag 3 on the second groove wall 242 needs to be ensured to be smaller than the door closing force.

The position of the sealing groove 24 may be formed at the middle position of the matching wall 214, and certainly may also be formed at the rear end of the matching wall 214, that is, the matching wall 214 is formed by extending from the front end of the second groove wall 242. The former matching wall 214 surface has four bending edges from back to front, which specifically comprises: front mating wall 214, first slot wall 241, second slot wall 242, and rear mating wall 214. The mating wall 214 surface of the latter has three bending edges from back to front, specifically: a first slot wall 241, a second slot wall 242, and a mating wall 214. The shapes of the plastic suction male dies corresponding to different bending edges are different, and the plastic suction male dies can be selected according to actual production.

In this embodiment, the length of the first groove wall 241 is greater than that of the second groove wall 242, and the first groove wall 241 is set long enough to ensure that the airbag 3 is only in contact with the first groove wall 241 after being inflated and is sealed, but not in contact with the second groove wall 242, so that an acting force is not given to the second groove wall 242, and a forward opening force is not generated, and therefore, only a closing force is generated, and the door 2 is ensured to be closed more firmly.

An acute angle between the first groove wall 241 and a horizontal line along the front-rear direction is smaller than an acute angle between the second groove wall 242 and a horizontal line along the front-rear direction. The included angle between the first groove wall 241 and the horizontal line in the front-back direction is smaller as much as possible, and the included angle is more parallel to the horizontal line in the front-back direction, so that the resistance is smaller in the demolding process, the demolding is easier, and the production efficiency is improved.

Stated another way, that is, the included angle between the first groove wall 241 and the horizontal line in the transverse direction is relatively large, and similarly, assuming that the included angle between the first groove wall 241 and the horizontal line in the transverse direction is a, and the length of the first groove wall 241 is a, the first groove wall 241 must move by a distance of a × cosA in the transverse direction to smoothly demold the door lining 21, and the larger the value of the included angle a, the smaller the value of a × cosA, and the easier the demolding of the door lining 21.

In order to further reinforce the air bag 3, a door closing force can be generated on the door liner 21, as shown in fig. 12, which is a fifth embodiment of the door liner 21 of the refrigerator according to the present invention.

The matching wall 214 has a limiting wall and a connecting wall which form the sealing groove 24 and are connected back and forth, (for convenience of description, the limiting wall and the connecting wall are still referred to as a first groove wall 241 and a second groove wall 242), the first groove wall 241 is formed by extending the matching wall 214 obliquely and forwards in a direction away from the inner wall 115 of the inner container 11 adjacent to the matching wall 214, the second groove wall 242 is formed by extending the second groove wall 242 obliquely and forwards in a direction away from the inner wall 115 of the inner container 11 adjacent to the matching wall 214 from the end of the first groove wall 241, and the airbag 3 is inflated to be matched with the first groove wall 241 and the second groove wall 242 to seal the storage space 12.

In this embodiment, the sealing groove 24 is formed by being recessed from the middle of the matching wall 214, and the matching wall 214 extends from the back to the front and slantingly toward the inner wall 115 of the inner container 11, therefore, the matching wall 214 further has a front wall forming the sealing groove 24, the front wall is connected to the front end of the second groove wall 242, for convenience of description, the front wall is referred to as a third groove wall 243, and the third groove wall 243 is formed by extending from the end of the second groove wall 242 to the front and slantingly toward the inner wall 115 of the inner container 11 adjacent to the matching wall 214 and connected to the matching wall 214 at the front end.

In the present embodiment, when the airbag 3 inflates, it only contacts the first groove wall 241 and the second groove wall 242, but not the third groove wall 243, and the third groove wall 243 is mainly used to connect the front mating wall 214, so that the door opening force is not generated, but only the door closing force is generated, and the door body 2 is ensured to be closed more firmly. Of course, in other embodiments, the airbag 3 may contact the third groove wall 243 after being inflated, and it is only necessary to ensure that the forward component of the acting force (i.e., the door opening force) of the airbag 3 on the third groove wall 243 is smaller than the door closing force generated by the first groove wall 241 and the second groove wall 242.

In this embodiment, an acute angle between the first groove wall 241 and a horizontal line along the front-back direction is greater than an acute angle between the second groove wall 242 and a horizontal line along the front-back direction.

Since the airbag 3 contacts both the first groove wall 241 and the second groove wall 242 when the airbag 3 is sealed, on one hand, the acute angle included angle between the first groove wall 241 and the horizontal line along the front-back direction is large, the component force of the airbag 3 on the first groove wall 241 in the backward direction is large, and the door body 2 can be prevented from being opened to a certain extent, and it can also be understood that the larger the angle of the first groove wall 241 is, the better the clamping effect on the airbag 3 is.

On the other hand, the acute angle between the second groove wall 242 and the horizontal line along the front-rear direction is smaller, which facilitates the longer arrangement of the second groove wall 242, thereby increasing the contact area with the airbag 3, and at the same time, because the included angle is smaller, the clamping force between the second groove wall 242 and the punch is smaller during demolding, thereby facilitating the demolding. Therefore, in principle, it is only necessary to ensure that the second groove wall 242 has an included angle with the horizontal line along the front-back direction, and the smaller the included angle, the better the included angle is, the more easily the demolding is ensured.

And the length of the first groove wall 241 is smaller than that of the second groove wall 242, on one hand, because the acute angle included angle between the first groove wall 241 and the horizontal line along the front-back direction is larger, and the first groove wall 241 is shorter, the area of the male die clamped by the first groove wall 241 is smaller during demoulding, which is more beneficial to demoulding. On the other hand, the second groove wall 242 is longer, so that the airbag 3 is mainly matched and sealed with the second groove wall 242 after being expanded, and the first groove wall 241 assists in clamping the airbag 3.

In the third to fifth embodiments of the door liner 21 of the refrigerator according to the present invention, the door liner itself can generate a closing force, that is, an additional fixing device is not required to fix the door body 2 and the refrigerator body 1, so that a magnetic element is not required to be disposed in the door seal 23, and since a magnetic element is not disposed, on one hand, the cost is reduced, and on the other hand, the thermal conductivity of air is lower than that of a magnetic element, the heat exchange efficiency is lower, and the heat exchange of air in the storage space 12 is not easily performed, so that the temperature in the storage space 12 is increased slowly, thereby improving the heat preservation and sealing effects.

As shown in fig. 6 and 7, the air bag 3 of the refrigerator according to another embodiment of the present invention includes an inner air bag 31, an outer air bag 32 disposed outside the inner air bag 31, and a fixing portion 42 fixed to the inner container 11.

In the present embodiment, the outer bag 32 may be integrally formed with the fixing portion 42, but may be assembled. The outer airbag 32 further has an installation opening for installing the inner airbag 31 therein, the inner bag 11 is concavely provided with a groove 111 for accommodating the airbag 3, the bottom of the groove 111 is further concavely provided with a fixing groove matched with the fixing portion 42, in this embodiment, the fixing portion 42 is triangular, but may have other shapes. When the airbag 3 is installed, the inner container 11 is made of plastic materials, so that the elasticity is good, the fixing part 42 can be directly installed on the fixing groove by overcoming the elastic force of the inner container 11, and the inner container 11 does not need to be damaged.

When the airbag 3 is not inflated, the airbag 3 is contracted in the groove 111 and is semicircular, so that the door body 2 can be opened and closed smoothly, the surface area of the inner airbag 31 is larger than that of the outer airbag 32, that is, the inner airbag 31 is arranged in the outer airbag 32 in a multi-layer fold shape, when the inner airbag 31 is inflated, because the surface area of the inner airbag 31 is larger, when the door is closed, the larger the area is, the larger the generated pressure is, and therefore, the sealing effect is better.

In the door-open state, the outer wall of the outer airbag 32 adjacent to the lining frame 212 is flush with the inner wall 115 of the inner container 11, i.e., the inner airbag 31 is not inflated and the outer airbag 32 is in an undeformed state. At this time, the door 2 can be opened and closed smoothly without interference from the outer bag 32.

In the present embodiment, the elastic modulus of the outer airbag 32 is smaller than that of the inner airbag 31, and the larger the elastic modulus, i.e., the higher the rigidity, i.e., the less likely to deform, so that the outer airbag 32 is more likely to deform with respect to the inner airbag 31, i.e., the outer airbag 32 is deformed immediately as long as the inner airbag 31 exerts a force on the outer airbag 32.

On the one hand, it is easy to control the amount of inflation of the inner bag 31, and on the other hand, it is possible to prevent damage to the inner bag 31 caused by over-inflation of the inner bag 31. In addition, the outer airbag 32 is made of a wear-resistant material, so that the outer airbag 32 is less likely to be damaged by friction with the lining frame 212 even during long-term use.

As shown in fig. 13 and 14, in order to further improve the sealing effect and reduce the heat exchange efficiency, the air pump 5 of the refrigerator according to the present invention fills the air bag 3 by sucking relatively cold air from the inside of the refrigerator, so that the temperature inside the air bag 3 is less different from the temperature inside the storage space 12, even lower than the temperature inside the storage space 12, thereby reducing heat exchange and maintaining the temperature inside the storage space 12 in a relatively stable state.

Specifically, as shown in fig. 1, the refrigerator includes an evaporation chamber 15 located at the rear side of the storage space 12, an evaporator 16 located in the evaporation chamber 15, an air duct cover plate 17 located between the storage space 12 and the evaporation chamber 15, an air pump 5 matched with the air bag 3, and an air duct 6 connected between an air inlet of the air bag and an air inflation inlet of the air pump, wherein the air pump 5 has an air suction port for sucking air from the evaporation chamber 15 or the storage space 12 to inflate the air bag 3.

In this embodiment, the air pump 5 is disposed in the evaporation chamber 15, and the temperature in the evaporation chamber 15 is lower than the temperature in the storage space 12, so that the air pump 5 sucks air from the evaporation chamber 15 and fills the air bag 3, and the temperature in the air bag 3 is lower than the temperature in the storage space 12, thereby reducing heat exchange and improving sealing effect.

The air duct cover 17 has an air outlet 171 and an air return opening 172 which are arranged oppositely in front and back or left and right, and in this embodiment, the air outlet 171 and the air return opening 172 are arranged oppositely in left and right. The evaporator 16 is disposed between the air outlet 171 and the air return opening 172, and the air pump 5 is disposed between the air outlet 171 and the evaporator 16, that is, the air pump 5 is disposed in a space surrounded by the air duct cover plate 17 on the air outlet 171 side, the evaporator 16, and the inner container 11.

Therefore, on one hand, the air pump 5 is arranged in the evaporation chamber 15, so that the space of the evaporation chamber 15 can be fully utilized, the space of the storage space 12 is saved, and a hidden design is formed, so that the appearance is attractive. On the other hand, the gas that air pump 5 intakes is the low-temperature low humidity gas after evaporimeter 16 cooling, and when this gas was filled to air pump 5 in, because temperature and humidity all are enough low, consequently, be difficult to appear liquid water to the probability that air duct 6 and air pump 5 freeze has been reduced, in addition air pump 5 is low temperature resistant air pump 5, and to sum up, air pump 5, air duct 6 and gasbag 3 all can work for a long time and be difficult for appearing damaging.

Of course, the air pump 5 and the air duct 6 may be disposed in the storage space 12, and preferably, the air pump 5 is disposed at the rear side of the storage space 12, so that it is not easily seen by the user when the door 2 is opened. The air duct 6 can extend forwards and backwards along the inner wall 115 of the liner 11 to be connected with the air bag inflation inlet, and the air duct 6 is fixed through a fixing clip 9. Or a plastic protective cover with the same color as the inner container 11 is arranged at the outer sides of the air pump 5 and the air duct 6.

The refrigerator is still including connecting the three-way valve 7 between air duct 6 and air pump 5 inflation inlet, three-way valve 7 has first opening 71, the second opening 72 of connecting air duct 6, the carminative third opening 73 of air feed cell 3 of connecting the air pump inflation inlet, be equipped with the solenoid valve in the third opening 73, when air cell 3 aerifys, the solenoid valve is closed, and when air cell 3 exhausts, the solenoid valve is opened and is exhausted through third opening 73.

Inflation and deflation of the air bag 3 are further controlled by setting the three-way valve 7 and controlling the opening and closing of the electromagnetic valve, only an inflation inlet is required to be arranged on the air bag 3, and an exhaust port is not required to be arranged, so that the air bag 3 has a simpler structure, and is convenient to install in the groove 111 of the inner container 11.

Air duct 6 is including the first air duct 61 of connecting the inflation inlet of air pump 5, the second air duct 62 of connecting the air inlet of gasbag 3, the first opening 71 and the second opening 72 of three-way valve 7 are connected respectively between first air duct 61 and second air duct 62, three-way valve 7 set up in the wind channel apron 17 rear side, be about to three-way valve 7 be fixed in on wind channel apron 17, just third opening 73 runs through wind channel apron 17 and communicates storing space 12. Through setting up two air ducts 6, both can make things convenient for three-way valve 7 to be fixed in on the wind channel apron 17, also be convenient for third opening 73 intercommunication storing space 12.

On the one hand, realize the hidden design of three-way valve 7, practice thrift the space of storing space 12, on the other hand, during 3 gassing of gasbag, can directly discharge the gas in the gasbag 3 to storing space 12 in, how much gas has in original box 1 promptly, after 3 gassing of gasbag, the gas total amount in the box 1 is unchangeable still to avoid producing the negative pressure, guarantee the normal of the door body 2 and open.

Of course, in other embodiments, the third opening 73 of the three-way valve 7 may also communicate with the evaporation chamber 15 to discharge the gas in the airbag 3 into the evaporation chamber 15, and since the evaporation chamber 15 and the storage space 12 are generally communicated through the air return opening 172, the generation of negative pressure may also be avoided.

In this embodiment, the refrigerator still has the mount 8 that sets up on inner bag 11 rear side wall, and it is used for fixing air pump 5, consequently, sets up air pump 5 in the rearmost side of inner bag 11, can guarantee that the at utmost keeps away from storing space 12, and the produced vibrations of air pump 5 during operation are also less to storing space 12's influence, in addition for reducing the produced vibrations of air pump 5 and noise, can also inhale sound damping material in the cladding of air pump 5 outside.

The refrigerator still has the through-hole (not shown) that runs through recess 111 diapire in order to communicate the foaming layer, air duct 6 sets up in the foaming layer and passes through 3 air inlets of gasbag are connected to the through-hole, for guaranteeing 3 inflation inlets of gasbag and 6 sealing connection of air duct, the front side of air duct 6 still can set up the air cock, and 3 inflation inlets of gasbag can be fixed to together through the interior external screw thread of mutually supporting between with the air cock. Or the air duct 6 is directly connected with the inflation port of the air bag 3, and a separate sealing member is arranged on the outer side to prevent air leakage of the air bag 3.

The other end of the air duct 6 is connected to a three-way valve 7 in the evaporation chamber 15, and the structure of the air duct 6 and the inflation inlet of the air bag 3 can be referred to for ensuring the sealing arrangement between the air duct 6 and the three-way valve 7. In this embodiment, in order to prevent the air duct 6 from bending and smoothly inflate the air bag 3, the refrigerator further has a plurality of fixing clips 9 arranged at intervals in the front-back direction for fixing the air duct 6, but in other embodiments, an embedded part extending in the front-back direction may be arranged on the foaming layer to facilitate installation of the air duct 6, and the air duct 6 is not easily bent.

In conclusion, the air pump 5, the air duct 6 and the three-way valve 7 of the present embodiment are all of a hidden design, so that the overall aesthetic degree is improved, and the volume ratio of the storage space 12 is also improved.

As shown in fig. 15, the present invention further provides a control method of a refrigerator, specifically, the refrigerator has a normal air charging mode and a fast air charging mode, and the control method includes:

acquiring the ambient temperature T of the refrigerator, comparing the ambient temperature T with a preset temperature T0, starting a rapid inflation mode when the ambient temperature T is more than or equal to the preset temperature T0, and otherwise, starting a common inflation mode;

the rapid inflation mode specifically includes: the method comprises the steps that opening information of a door body 2 is obtained, a sealed air bag 3 between a refrigerator body 1 and the door body 2 is inflated after the door body 2 is opened, meanwhile, pressure p1 in the sealed air bag 3 is obtained, and when the pressure p1 reaches preset pressure p2, inflation is stopped;

and acquiring closing information of the door body 2, and continuously inflating the sealed air bag 3 after the door body 2 is closed until the pressure p1 in the sealed air bag 3 reaches the sealing pressure p3.

The rapid inflation mode is mainly characterized in that after the door body 2 is opened, the sealing air bag 3 is pre-filled with certain gas, so that after the door body 2 is closed, the inflation time from the inflation of the sealing air bag 3 to the sealing pressure p3 is shortened, the sealing air bag 3 enters a sealing state in advance, the heat exchange of the storage space 12 is reduced, and the sealing effect is improved.

Generally, a detection device is arranged at the handle position of the refrigerator, when a user touches the handle, the detection device detects the action and feeds the action back to the control unit, and the control unit controls the sealing air bag 3 to exhaust air after acquiring the information, so that the door body 2 is convenient to open.

The fast inflation mode can have two working modes, the first mode is: the sealed air bag 3 is completely exhausted and is re-inflated to p2, and the second method is as follows: controlling the exhaust of the sealed air bag 3 and detecting the pressure in real time, and controlling the exhaust valve to close when the pressure is detected to be reduced to p2.

In the second operation mode, because the exhaust speed of the sealed air bag 3 is high, and the sensitivity limit of the detection instrument and the exhaust valve is added, it is difficult to accurately control the exhaust to p2, which is usually lower than p2, and therefore, the sealed air bag 3 still needs to be re-inflated to p2.

Therefore, in the first working mode, the pressure sensor does not need to detect in the exhaust process, and the repeated opening of the exhaust valve is avoided.

And when the door body 2 was closed last time in the gas in the sealed gasbag 3, the air pump 5 from the evaporation chamber 15 inspiration was filled, therefore, through the door body 2 closed last time to this time door body 2 opened certain time interval, the gas temperature in the sealed gasbag 3 also must rise, so, earlier the gas in the sealed gasbag 3 exhausts, fills new low temperature low humidity gas and is favorable to reducing the heat transfer, improves sealed effect.

Firstly, judging the size of the environment temperature T and the preset temperature T0 of the refrigerator, if the T is larger than or equal to the T0, the environment temperature T of the refrigerator is higher, the working condition is relatively bad, and therefore, the rapid inflation mode is started, otherwise, the environment temperature T of the refrigerator is lower, the working condition is relatively good, and the common inflation mode is started.

Assuming that the critical pressure of the sealing airbag 3 is p4 when the sealing airbag is in the expansion deformation and the non-deformation state, after the sealing airbag 3 is completely deflated, the sealing airbag 3 is in the wrinkle state and is inflated from the wrinkle state to the wrinkle-free state, at this time, if the sealing airbag 3 is continuously inflated, the material of the sealing airbag 3 is elastically deformed due to the expansion, and p4 is the critical pressure of the material of the sealing airbag 3 when the material is elastically deformed and the non-elastic deformation state.

When the refrigerator is the refrigerator of the first embodiment, the p4 is a critical pressure at which the deformation portion 41 of the fixing member 4 is elastically deformed and is not elastically deformed, and when the refrigerator is the refrigerator of the second embodiment, the p4 is a critical pressure at which the outer bladder 32 is elastically deformed and is not elastically deformed.

Wherein p4 x 80% < p2 < p4, and the preset pressure p2 is set to a certain range, so that the situation of repeated inflation when the preset pressure p2 is set to a fixed value and the pressure in the sealed air bag 3 is lower than p2 is detected can be avoided, thereby reducing the working times of the air pump 5 and prolonging the service life.

The fast inflation mode further comprises: the method comprises the steps of inflating a sealing airbag 3 between a refrigerator body 1 and a door body 2 after the door body 2 is opened, firstly obtaining the opening time t1 of the door body 2, comparing p1 with p2 when the opening time t1 reaches the preset time t0, and continuing inflating until p2 is reached when p1 is smaller than p2. This is because it takes a certain time to inflate the sealed airbag 3 to p2, and p2 cannot be reached at the initial stage of inflation, and therefore, it is not necessary to detect the pressure p1 in the sealed airbag 3 at the initial stage, thereby lowering the operating frequency of the pressure sensor.

Assuming that the critical pressure when the sealing airbag 3 just generates acting force on the door body 2 or the box body 1 after being inflated is p5, p5 < p3 < p5 × 120%, because it is necessary to make the sealing airbag 3 and the door body 2 or the box body 1 have better sealing effect, p3 is usually made slightly larger than p5, and p3 must not exceed a certain value in order to avoid the door body 2 or the box body 1 from being damaged due to over-expansion of the sealing airbag 3.

The normal inflation mode includes: and acquiring opening information of the door body 2, controlling the sealed air bag 3 to exhaust completely, acquiring closing information of the door body 2 when the door body 2 is closed, and inflating the sealed air bag 3 to enable the pressure p1 to rise from 0 to the sealing pressure p3.

Therefore, the normal inflation mode is increased from 0 to p3, and the quick inflation mode is increased from p2 to p3, so that the inflation time of the quick inflation mode is shorter than that of the normal inflation mode obviously after the door body 2 is closed.

In summary, in the refrigerator of the present invention, the sealing groove 24 matched with the air bag 3 is concavely disposed on the inner container 11 or the lining frame 212, and in the closed state, the air bag 3 is inflated and then extends into the sealing groove 24, and forms a sealing fit with the inner wall of the sealing groove 24. Not only can increase the sealing area of gasbag 3, but also can increase the frictional force of cooperation wall 214 and gasbag 3, reduce the gasbag 3 to the power of opening the door of cooperation wall 214, guarantee the fixed effect of door body 2 and box 1 to improve sealed effect.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a refrigerator, including the box that has the inner bag, with the box complex door body, the door body has the door lining, form storing space between door lining and the inner bag, the door lining has the door welt and stretches to the inboard lining frame of inner bag backward from the door welt, the box is formed with the frame oral area, the door body be formed with in the outside of lining frame with the sealing that the frame oral area is relative, be provided with on the sealing with the frame oral area absorptive door strip of paper used for sealing, its characterized in that: the refrigerator is still including being fixed in on one of them of inner bag and lining frame with the gasbag of sealed storing space, concavely locate on the other with gasbag matched with seal groove, with gasbag matched with air pump, under the state of closing the door, the gasbag aerifys the back and stretches into the seal groove to form sealed cooperation with the seal groove inner wall, the gasbag is fixed in on the inner bag, adjacent on the inner bag the position department of lining frame is formed with recess and fixed knot structure, the gasbag is acceptd in the recess, the refrigerator is still including fixed the mounting of gasbag, the mounting cooperatees with fixed knot structure through the fixed part and fixes outside the gasbag, the mounting has covers in the gasbag outside and along with the gasbag fill out deformation portion of gassing elastic deformation, links to each other with the deformation portion with the fixed part on the inner bag.

2. The refrigerator of claim 1, wherein: the gasbag is fixed in on the inner bag, the liner frame has the cooperation wall with the adjacent setting of inner bag, the cooperation wall is the slope setting to the inner bag gradually forward from the back, the seal groove certainly the cooperation wall recess forms.

3. The refrigerator of claim 2, wherein: the matching wall is provided with a first groove wall and a second groove wall which form the sealing groove and are connected front and back, the first groove wall is positioned at the rear side of the second groove wall, the first groove wall is formed by vertically extending from the matching wall towards the door lining plate, and the second groove wall is formed by obliquely and forwardly extending from the tail end of the first groove wall towards the inner wall direction of the inner container adjacent to the matching wall.

4. The refrigerator of claim 2, wherein: the matching wall is provided with a first groove wall and a second groove wall which form the sealing groove and are connected front and back, the first groove wall is formed by extending forwards in an inclined manner from the end of the first groove wall towards the direction far away from the inner wall of the inner container adjacent to the matching wall, and the second groove wall is formed by extending forwards in an inclined manner from the end of the first groove wall towards the direction towards the inner wall of the inner container adjacent to the matching wall.

5. The refrigerator of claim 4, wherein: the acute angle included angle between the first groove wall and a horizontal line along the front-back direction is larger than that between the second groove wall and a horizontal line along the front-back direction, and the length of the first groove wall is smaller than that of the second groove wall.

6. The refrigerator of claim 4, wherein: the length of the first groove wall is larger than that of the second groove wall, an acute included angle between the first groove wall and a horizontal line in the front-back direction is smaller than that between the second groove wall and the horizontal line in the front-back direction, and the air bag is in contact with the first groove wall when expanding to seal a storage space.

7. The refrigerator of claim 2, wherein: the cooperation wall has and forms first cell wall and second cell wall that the seal groove links to each other around and, first cell wall is kept away from the cooperation wall with the adjacent inner bag inner wall direction slope forward extension formation of this cooperation wall from the cooperation wall orientation, the second cell wall is kept away from first cell wall terminal orientation with the adjacent inner bag inner wall direction slope forward extension formation of this cooperation wall, under the state of closing the door, the gasbag aerifys back and forms sealed cooperation with first cell wall and second cell wall.

8. The refrigerator of claim 7, wherein: the acute angle included angle between the first groove wall and a horizontal line in the front-back direction is larger than that between the second groove wall and the horizontal line in the front-back direction, and the length of the first groove wall is smaller than that of the second groove wall.

9. The refrigerator of claim 1, wherein: the air bag is of a multi-section structure, two adjacent sections are communicated with each other through air holes, and the diameter of each air hole is smaller than that of each section of the air bag after the air bag is expanded.

10. The refrigerator of claim 1, wherein: the liner is provided with an inner wall adjacent to the lining frame, and the outer wall of the fixed piece adjacent to the lining frame is flush with the inner wall of the liner when the door is opened.

11. The refrigerator of claim 1, wherein: the inner container is provided with an inner container body and a connecting piece fixed at the front end of the inner container body, and the groove and the fixing structure are formed on the connecting piece.