CN113883794B - refrigerator - Google Patents

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

technical field

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

Background technique

The heat preservation of existing refrigerators is mainly to install a door seal on the door body to seal with the box body. Only relying on the door seal to seal still has the problem of cold leakage at the door seal, and the heat load on the door seal accounts for about 10% of the entire refrigerator. About 20% of the heat load, which makes the refrigeration system of the refrigerator need to be frequently refrigerated, increasing power consumption.

In view of this, it is necessary to improve existing refrigerators to solve the above problems.

Contents of the invention

The object of the present invention is to provide a refrigerator with better thermal insulation performance and lower power consumption.

In order to achieve the purpose of the above invention, the present invention provides a refrigerator, which includes a box body with an inner container, a door body matched with the box body, the door body has a door liner, and a storage space is formed between the door liner and the liner space, the door liner has a door liner and a liner frame protruding backward from the door liner to the inner side of the liner, the box body is formed with a frame opening, and the door body is formed on the outside of the liner frame with a The sealing portion opposite to the frame opening, the sealing portion is provided with a door seal that can be adsorbed to the frame opening, wherein the refrigerator also includes a door seal that is fixed on one of the inner container and the liner frame to seal the storage space The air bag, the sealing groove recessed on the other to match the air bag, and the air pump matching the air bag, in the closed state, the air bag stretches into the sealing groove after being inflated, and forms a sealing fit with the inner wall of the sealing groove , the airbag is fixed on the inner container, a groove and a fixing structure are formed on the inner container adjacent to the liner frame, the airbag is accommodated in the groove, and the refrigerator also includes a fixing structure for fixing the airbag The fixing part is fixed outside the airbag through the cooperation of the fixing part and the fixing structure. The fixing part has a deformation part that covers the outside of the air bag and elastically deforms with the inflation and deflation of the air bag, and is connected with the deformation part to be fixed to The fixed part on the liner.

As a further improvement of the present invention, the airbag is fixed on the inner tank, the lining frame has a matching wall adjacent to the inner tank, the matching wall is gradually inclined from the back to the front, and the sealing A groove is recessed from the mating wall.

As a further improvement of the present invention, the matching wall has a first groove wall and a second groove wall that form the sealing groove and are connected back and forth, the first groove wall is located at the rear side of the second groove wall, and the first groove wall is The matching wall is formed to extend vertically toward the door liner, and the second groove wall is formed to extend obliquely forward from the end of the first groove wall toward the inner wall of the liner 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 that form the sealing groove and are connected back and forth, and the first groove wall faces away from the inner wall adjacent to the matching wall from the matching wall. The inner wall of the liner is formed by extending obliquely forward, and the second groove wall is formed by extending obliquely forwardly from the end of the first groove wall toward the inner wall of the liner adjacent to the matching wall.

As a further improvement of the present invention, the acute angle between the first groove wall and the horizontal line along the front-back direction is greater than the acute angle between the second groove wall and the horizontal line along the front-back direction, and the length of the first groove wall is less than The length of the second groove wall.

As a further improvement of the present invention, the length of the first groove wall is greater than the length of the second groove wall, and the acute angle between the first groove wall and the horizontal line along the front-back direction is smaller than the angle between the second groove wall and the horizontal line along the front-back direction. When the airbag is inflated, it contacts with the first groove wall to seal the storage space.

As a further improvement of the present invention, the matching wall has a first groove wall and a second groove wall that form the sealing groove and are connected back and forth, and the first groove wall faces away from the inner wall adjacent to the matching wall from the matching wall. The direction of the inner wall of the tank extends obliquely forward, and the second groove wall is formed by extending obliquely forward from the end of the first groove wall toward the inner wall of the inner tank adjacent to the matching wall. In the closed state, the airbag is inflated Then form a sealing fit with the first groove wall and the second groove wall.

As a further improvement of the present invention, the acute angle between the first groove wall and the horizontal line along the front-back direction is greater than the acute angle between the second groove wall and the horizontal line along the front-back direction, and the length of the first groove wall is less than The length of the second groove wall.

As a further improvement of the present invention, the airbag is a multi-section structure, and two adjacent sections communicate with each other through air holes, and the diameter of the air hole is smaller than the diameter of each airbag after expansion.

As a further improvement of the present invention, the liner has an inner wall adjacent to the liner frame, and when the door is opened, the outer wall of the fixing member adjacent to the liner frame is flush with the inner wall of the liner.

As a further improvement of the present invention, the inner container has 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.

Beneficial effects of the present invention: the refrigerator of the present invention is provided with a sealing groove matched with the airbag on the inner tank or lining frame. In the closed state, the airbag stretches into the sealing groove after being inflated, and contacts with the inner wall of the sealing groove. Forms a tight fit. Not only can the sealing area of the airbag be increased, but also the friction between the matching wall and the airbag can be increased, the opening force of the airbag on the matching wall can be reduced, and the fixing effect of the door and the box can be ensured, thereby improving the sealing effect.

Description of drawings

Fig. 1 is a schematic perspective view of the refrigerator of the present invention.

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

Fig. 3 is a three-dimensional exploded view of the refrigerator of the present invention.

Fig. 4 is a sectional view of the refrigerator airbag of the present invention.

Fig. 5 is an exploded cross-sectional view of the fixing piece and the liner.

Fig. 6 is a sectional view of another embodiment of the refrigerator airbag of the present invention.

Fig. 7 is a cross-sectional view of the airbag in Fig. 6 after inflation.

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

FIG. 9 is a cross-sectional view of the airbag in FIG. 8 after inflation.

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

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

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

Fig. 13 is a cross-sectional view of the evaporation chamber of the refrigerator of the present invention.

FIG. 14 is an enlarged view at A in FIG. 13 .

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

Detailed ways

The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. However, this embodiment does not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to this embodiment are included in the protection scope of the present invention.

Please refer to Fig. 1 to Fig. 15 to show the embodiment of the refrigerator of the present invention, the refrigerator includes a box body 1 with an inner container 11, a door body 2 matched with the box body 1, the door body 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 backward from the door liner 211 to the inside of the inner container 11. The box The body 1 is formed with a frame opening 13, and the door body 2 is formed with a sealing portion 22 opposite to the frame opening 13 on the outside of the lining frame 212, and the sealing portion 22 is provided with a Adsorbed door seal 23, wherein, the refrigerator also includes an airbag 3 fixed on one of the liner 11 and the liner frame 212 to seal the storage space 12, and an airbag 3 recessed on the other to cooperate with the airbag 3 The sealing groove 24 and the air pump 5 cooperating with the air bag 3 , in the closed state, the air bag 3 stretches into the sealing groove 24 after being inflated, and forms a sealing fit with the inner wall of the sealing groove 24 .

Specifically, as shown in FIG. 1 to FIG. 5 , in this embodiment, the door-opening side of the refrigerator is located on the left side. Of course, in other embodiments, the door-opening side may also be located on the right side. As shown in FIG. 1 , the door shell is not shown on the door body 2 , only the door liner 21 is shown. The liner frame 212 protrudes backward from the periphery of the door liner 211 , and the airbag 3 is mainly used to seal the inner wall 115 of the liner 11 and the liner frame 212 to further enhance the sealing effect. Certainly, the airbag 3 may be arranged in a ring shape in cooperation with the inner wall 115 and the lining frame 212 , or may be only arranged at a partial position between the inner wall 115 and the lining frame 212 .

In this embodiment, the liner frame 212 has a fixed wall 213 on the inner side and a matching wall 214 on the outer side, the fixing wall 213 is mainly used to set the bottle seat, and the airbag 3 is located on the matching wall 214 and the inner container 11 The storage space 12 is sealed between the inner walls 115 of the matching wall 214 , wherein the sealing portion 22 extends from the front side of the matching wall 214 along the transverse direction.

In this embodiment, the door seal 23 can not only seal the storage space 12, but also fix the door body 2 and the box body 1, and then combine the air bag 3 to seal the inner wall 115 of the liner 11 and the liner frame 212 That is, the only two contact surfaces (the sealing part 22 and the matching wall 214 ) between the door body 2 and the box body 1 are sealed, so the sealing effect can be further improved and the influence of the external environment on the temperature in the storage space 12 can be reduced.

The door seal 23 includes a fixed foot 231 fixed to the sealing portion 22, and a sealing body 232 extending backward from the fixing foot 231. The sealing body 232 has a primary air chamber and a secondary air chamber adjacently arranged. , wherein, under normal circumstances, magnetic elements are provided in the main air chamber or the auxiliary air chamber to attract and cooperate with the magnetic elements on the frame opening 13, thereby maintaining the closed state of the door body 2.

Since the shell 14 of the box body 1 is made of metal, and the front side of the shell 14 has a bent edge, the bent edge is the magnetic element, therefore, the magnetic element can be directly attracted to the bent edge. Of course, in order to reduce production cost and reduce heat exchange, the main air chamber or auxiliary air chamber may not be provided with magnetic elements, and the air chamber provided with magnetic elements provides further deformation space for the door seal, thereby improving the sealing effect. (This structure can only be realized by cooperating with the structure of the lining frame 212 or the structure of the liner 11, see the following examples for details)

As shown in Figures 4 and 5, the refrigerator also has a fixing member 4 for fixing the airbag 3, and the fixing member 4 has a deformation part 41 that covers the outside of the airbag 3 and elastically deforms as the airbag 3 is inflated and deflated. The deformation part 41 is connected to be fixed to the inner container 11 or the fixing part 42 on the liner frame 212 .

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

Specifically, in this embodiment, the liner 11 has a liner body 113 and a connecting piece 114 fixed to the front end of the liner body 113, the groove 111 and the fixing structure 112 are formed on the connecting piece 114, Since the inner tank 11 is usually formed by blister, it is not easy to arrange the fixed structure 112 on its surface. Therefore, by setting the connecting piece 114 at the front end of the inner tank body 113, it is convenient to arrange the groove 111 and the fixed structure 112. On the connecting piece 114 , it is convenient to assemble the fixing piece 4 .

The connecting piece 114 is generally a plastic piece and is arranged around the front end of the liner body 113. In this embodiment, the fixing structures 112 are arranged on the front and rear sides of the groove 111, each of the fixing structures 112 It has a card slot 1121 recessed from the surface of the connector 114 and a limiting slot 1122 on one side of the card slot 1121 .

The connector 114 also has an inner tank fixing end 1141 connected to the rear fixing structure 112 to be fixed to the inner tank body 113, and an outer shell fixing end connected to the front fixing structure 112 to be fixed to the metal outer shell 14 of the box body 1. end 1142, the fixed end 1141 of the liner is extended backwards, and the fixed end 1142 of the outer shell is extended outwards along the transverse direction. Therefore, the connecting piece 114, the inner liner body 113 and the outer shell 14 jointly form a foaming cavity . In this embodiment, the connector 114 can bond the liner fixed end 1141 to the liner body 113 with adhesive glue, and the shell fixed end 1142 is fixed by matching with the U-shaped groove of the shell 14, of course In other embodiments, the connecting member 114 may also be provided with a matching structure fixed with the liner body 113 .

In this embodiment, the fixing portion 42 of the fixing member 4 is respectively arranged on the front and rear sides of the deformation portion 41 so as to cooperate with the groove 111 and the fixing structure 112, wherein the deformation portion 41 and The fixed parts 42 are respectively formed of plastics of different materials through soft and hard co-extrusion processes, that is, the deformable part 41 is made of a material that is easily deformed, while the fixed part 42 is made of a material that is not easily deformed, and different materials are realized through soft and hard co-extrusion. Co-molding improves the production efficiency of the fixing part 4 . Of course, in other embodiments, the deformation part 41 can also be formed separately and assembled with the fixing part 42 to form the fixing part 4 .

In this embodiment, the elastic modulus of the deformation part 41 is smaller than the elastic modulus of the airbag 3, and the greater the elastic modulus, the greater the rigidity, that is to say, the less likely to deform. Therefore, the deformation part 41 Compared with the air bag 3, it is easier to deform, that is, as long as the air bag 3 exerts a force on the deforming portion 41, the deforming portion 41 will immediately deform. On the one hand, it is easy to control the inflation amount of the air bag 3; Avoid damage to the air bag 3 due to excessive inflation of the air bag 3 . Moreover, the deformation part 41 is made of a wear-resistant material, so that the deformation part 41 is not easily damaged by friction with the lining frame 212 even during long-term use.

The fixing portion 42 has a hook 421 and a limiting portion 422 that cooperate with the locking groove 1121 and the limiting groove 1122 of the fixing structure 112 , where the locking hook 421 and the locking groove 1121 cooperate to realize positioning in the lateral direction. The limiting portion 422 cooperates with the limiting groove 1122 , on the one hand, it can further strengthen the fixing effect of the hook 421 and the locking groove 1121 .

On the other hand, during the long-term use of the refrigerator, the risk of damage to the hook 421 caused by the deformation of the deformation part 41 and the pulling of the fixing part 42 is reduced, and at the same time, it is convenient for installation. Therefore, by providing the fixing member 4 , there is no need to add a fixing structure 112 to the airbag 3 , only the airbag 3 is placed in the groove 111 , and then the fixing member 4 is installed, which is simple and efficient to install.

In the state of opening the door, the outer wall of the fixing member 4 adjacent to the lining frame 212 (that is, the deformed part 41) is flush with the inner wall 115 of the inner tank 11, that is, the airbag 3 is not inflated and the deformed part 41 is in an undeformed state. At this time, the door body 2 can be opened and closed smoothly without being interfered by the deformation portion 41 .

In this embodiment, the liner frame 212 protrudes backward from the periphery of the door liner 211 , that is, it is arranged around the inner wall 115 of the liner 11 , and the airbag 3 corresponds to the connecting piece 114 and the liner frame 212 It is also arranged in a ring shape; and the ring-shaped airbag 3 can be arranged in a multi-stage structure (not shown), and two adjacent sections communicate with each other through air holes, and the inner diameter of the air hole is smaller than the inner diameter of each airbag 3 . Connecting each segment of the airbags 3 through air holes can effectively reduce the air convection in the airbags 3 , thereby significantly reducing the heat exchange efficiency and reducing the influence on the temperature in the storage space 12 .

In this embodiment, the matching wall 214 is arranged to extend obliquely from the back to the front and toward the inner wall 115 of the inner container 11, which is to facilitate the demoulding of the door liner 21 from the blister punch. Of course, in other embodiments, The matching wall 214 can also be extended in a direction perpendicular to the door liner 211. In order to further strengthen the sealing effect of the air bag 3, the matching wall 214 is also concavely provided with a hole that matches the air bag 3. Seal groove 24. By setting the sealing groove 24, the sealing area of the airbag 3 is increased, on the one hand, the sealing effect is increased; The forward force component prevents the door body 2 from opening.

Specifically, the matching wall 214 has at least two groove walls forming the sealing groove 24, the more groove walls forming the sealing groove 24, the larger the area sealed with the airbag 3, the better the sealing effect, and the friction force is also lower. The bigger it is, the more difficult it is for the door body 2 to be opened. In this embodiment, the sealing groove 24 is arranged around the fitting wall 214 , so that it can cooperate with the annular airbag 3 to increase the sealing effect. Of course, in other embodiments, the sealing groove 24 can also be arranged at a local position of the matching wall 214 , such as some places that are prone to cold leakage, for example, at a position close to the door opening side of the door body 2 .

As shown in Figure 4, it is the first embodiment of the door liner 21 of the refrigerator of the present invention, the said matching wall 214 has a first groove wall 241 and a second groove wall 242 which form the sealing groove 24 and are connected back and forth, the first The groove wall 241 is located on the rear side of the second groove wall 242. The first groove wall 241 is formed by extending vertically from the mating wall 214 toward the door liner 211. The second groove wall 242 is formed from the end of the first groove wall 241 toward the matching The wall 214 adjacent to the inner wall 115 of the liner 11 is formed to extend forward obliquely.

Therefore, neither the first groove wall 241 nor the second groove wall 242 extends obliquely forward away from the inner wall 115 of the liner 11 adjacent to the mating wall 214, and the door liner 21 is generally mainly formed by blistering, Moreover, the plastic-absorbing punch is used. When demoulding, the door liner 21 moves upward for demoulding. During the upward movement, except for the friction between the door liner 21 and the surface of the punch, there is no other external force to prevent the upward movement, so that the punch is more stable. Smooth, at the same time, also increases the sealing effect.

When the airbag 3 is inflated, it can be in contact with both the first groove wall 241 and the second groove wall 242, and of course it can only be in contact with one of them, wherein the optimal choice is that the airbag 3 is only in contact with the first groove wall 241 , this is because the first groove wall 241 is formed to extend vertically toward the door liner 211 , and the force exerted by the airbag 3 on the first groove wall 241 has no forward component force, thus no door opening force will be generated.

As shown in Fig. 8 and Fig. 9, it is the second embodiment of the door liner 21 of the refrigerator of the present invention, the said matching wall 214 has the first groove wall 241 and the second groove wall 242 which form the sealing groove 24 and are connected back and forth The first groove wall 241 is formed by extending obliquely and forwardly from the matching wall 214 toward the inner wall 115 of the liner 11 adjacent to the matching wall 214 , that is, extending obliquely forwardly toward the door liner 211 , and the second The groove wall 242 is formed to extend obliquely forward from the end of the first groove wall 241 toward the inner wall 115 of the liner 11 adjacent to the mating wall 214 .

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

Therefore, on the one hand, the acute angle between the first groove wall 241 and the horizontal line along the front-back direction is relatively large, and the force exerted by the airbag 3 on the first groove wall 241 has a relatively large backward force component, which can form a closed door to a certain extent. Force, prevent door body 2 from opening. On the other hand, the acute angle between the second groove wall 242 and the horizontal line along the front-back direction is small, and the forward component of the force exerted by the airbag 3 on the second groove wall 242 is small, which can reduce the door opening force to a certain extent. Combined with the fixing effect of the door seal 23, the door body 2 can be prevented from being opened under the force of the airbag 3.

Moreover, the length of the first groove wall 241 is shorter than the length of the second groove wall 242. When the door liner 21 is demoulded, since the first groove wall 241 faces away from the matching wall 214 and away from the inner container adjacent to the matching wall 214 11. The direction of the inner wall 115 is inclined to extend forward. Assume that the angle between the first groove wall 241 and the horizontal line in the lateral direction is A, and the length of the first groove wall 241 is a. Therefore, the first groove wall 241 must move in the lateral direction The distance of a×cosA can make the door liner 21 demould smoothly, and the smaller the length a of the first groove wall 241 is, the smaller the value of a×cosA is, and the easier the demoulding is.

In order to solve the problem that the airbag 3 generates a door opening force on the door lining 21, and further enable the airbag 3 to generate a door closing force on the door lining 21, the present invention also provides the following design, as shown in Figure 10, which is the door lining 21 of the refrigerator of the present invention. third embodiment.

The airbag 3 is arranged annularly in cooperation with the liner frame 212, the airbag 3 is fixedly arranged on one of the liner 11 and the liner frame 212, and the other is formed with an airbag 3 that is in contact with the airbag 3 when the door body 2 is closed. A matching limiting wall, the limiting wall extends from the outside to the inside in the transverse direction (that is, it is formed by extending obliquely and forwardly toward the direction away from the inner wall 115 of the inner tank 11 adjacent to the matching wall 214 ), and the limiting wall At the same time, the wall extends obliquely from the rear to the front. For convenience of description, the limiting wall is referred to as the first groove wall 241 below.

In this embodiment, the airbag 3 is fixed on the inner wall 115 of the liner 11 (see the aforementioned section for details), the first groove wall 241 is formed on the matching wall 214, specifically, the first groove The wall 241 can also be the matching wall 214, or a part of the structure on the matching wall 214. When the first groove wall 241 is the matching wall 214, the sealing part 22 extends from the front side of the first groove wall 241 along the transverse direction. form.

When the airbag 3 is inflated, the force exerted by the airbag 3 on the first groove wall 241 has a backward component force, which can make the door body 2 and the box body 1 fixed, that is, the door closing force. When the angle between the first groove wall 241 and the horizontal line along the front-back direction is larger, the door closing force is larger, and the fixing effect of the door body 2 is also better, but it is difficult to demould, therefore, in the actual production process , it is necessary to comprehensively balance the size of the closing force and the difficulty of demoulding to control the size of the included angle. And when the first groove wall 241 is the matching wall 214, there is no need to arrange other structures on the matching wall 214, and the design of the punch is relatively simple.

Of course, in other embodiments, the airbag 3 is fixed on the lining frame 212, and the first groove wall 241 is formed on the inner wall 115 of the liner 11. When the airbag 3 is inflated, the first groove wall 241 can prevent the airbag 3 from moving Move forward, thereby avoiding that the door body 2 is opened.

As shown in Fig. 11, it is the fourth embodiment of the door liner 21 of the refrigerator of the present invention.

A sealing groove 24 matching with the airbag 3 is formed on the fitting wall 214 , and the fitting wall 214 has at least two groove walls forming the sealing groove 24 , at least one of which is the limiting wall. When the airbag 3 is inflated and inflated, it cooperates with the limiting wall to seal the storage space 12 . This is because the direction of the force generated by the airbag 3 on the limiting wall is perpendicular to the contact surface of the groove wall, therefore, the force has a backward component force, so that the door body 2 is finally closed more firmly , that is, the closing force is generated.

In this embodiment, the matching wall 214 has a limiting wall (ie, the first groove wall 241 ) and a connecting wall (ie, the second groove wall 242 ) that form the sealing groove 24 and are connected front and rear. The limiting wall is The rear inner wall of the sealing groove 24 and the connecting wall are the front inner wall of the sealing groove 24 . For convenience of description, the limiting wall is called the first groove wall 241 , and the connecting wall is called the second groove wall 242 .

The second groove wall 242 is formed by extending obliquely from the end of the first groove wall 241 toward the inner wall 115 of the liner 11 adjacent to the mating wall 214. In this embodiment, the airbag 3 is only inflated with the second groove wall A groove wall 241 cooperates to seal the storage space 12. This is because the airbag 3 only contacts with the first groove wall 241 to ensure that only the door closing force is generated. Of course, in other embodiments, the airbag 3 can also be in contact with the second groove wall. The groove walls 242 are in contact with each other, it only needs to ensure that the forward component of the force of the airbag 3 on the second groove wall 242 (that is, the door opening force) is smaller than the above door closing force.

Wherein, the position of the sealing groove 24 can be formed at the middle position of the matching wall 214, of course, it can 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 mating wall 214 has four sections of bent edges from back to front, specifically: the front mating wall 214 , the first groove wall 241 , the second groove wall 242 and the rear mating wall 214 . The latter's mating wall 214 has three sections of bent sides from back to front, specifically: the first groove wall 241 , the second groove wall 242 and the mating wall 214 . The shape of the blister punch corresponding to different bending edges is also different, which can be selected according to actual production.

In this embodiment, the length of the first groove wall 241 is greater than the length of the second groove wall 242, and the first groove wall 241 is set long enough to ensure that the airbag 3 only contacts and seals with the first groove wall 241 after inflated. , and will not contact the second groove wall 242, so that no force will be applied to the second groove wall 242, and of course no forward door opening force will be generated, therefore, only door closing force will be generated to ensure that the door body 2 is closed stronger.

The acute angle between the first groove wall 241 and the horizontal line along the front-back direction is smaller than the acute angle between the second groove wall 242 and the horizontal line along the front-back direction. Make the angle between the first groove wall 241 and the horizontal line in the front-back direction as small as possible, and tend to be more parallel to the horizontal line in the front-back direction, so that in the demoulding process, the resistance is smaller and the demoulding is easier ,Increase productivity.

In other words, that is, the angle between the first groove wall 241 and the horizontal line in the lateral direction is relatively large. Similarly, assuming that the angle between the first groove wall 241 and the horizontal line in the lateral direction is A, the length of the first groove wall 241 is a, therefore, the first groove wall 241 must move a distance of a×cosA along the lateral direction, so that the door liner 21 can be demoulded smoothly, then the larger the value of the included angle A, the smaller the value of a×cosA, then It also makes the door liner 21 easier to demould.

In order to further enhance the airbag 3 to generate a closing force on the door lining 21, as shown in FIG. 12, it is the fifth embodiment of the door lining 21 of the refrigerator of the present invention.

The matching wall 214 has a limiting wall and a connecting wall that form the sealing groove 24 and are connected back and forth, (for the convenience of description, the limiting wall and the connecting wall are still referred to as the first groove wall 241 and the second groove wall 242 ), the first groove wall 241 is formed by extending from the mating wall 214 toward the direction away from the inner wall 115 of the liner 11 adjacent to the mating wall 214, and the second groove wall 242 is formed from the end of the first groove wall 241 toward The inner wall 115 of the liner 11 adjacent to the matching wall 214 is formed to extend obliquely forward. After the airbag 3 is inflated, it cooperates 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 position of the fitting wall 214, and the fitting wall 214 extends obliquely from the back to the front and toward the inner wall 115 of the inner container 11, therefore, the fitting wall 214 also has Form the front wall of the sealing groove 24, the front wall is connected to the front end of the second groove wall 242, for the convenience of description, the following front wall is called the third groove wall 243, and the third groove wall 243 starts from the first groove wall 243. The end of the second groove wall 242 extends forward and obliquely toward the inner wall 115 of the liner 11 adjacent to the matching wall 214 , and is connected to the matching wall 214 at the front end.

In this embodiment, when the airbag 3 is inflated, it only contacts the first groove wall 241 and the second groove wall 242, but does not contact the third groove wall 243, and the third groove wall 243 is mainly used for connecting Therefore, the matching wall 214 at the front end also does not generate a door opening force, but only generates a door closing force to ensure that the door body 2 is closed more firmly. Of course, in other embodiments, the airbag 3 can also be in contact with the third groove wall 243 after being inflated, it only needs to ensure that the forward component of the force of the airbag 3 on the third groove wall 243 (that is, the door opening force) is smaller than that of the first groove The closing force generated by the wall 241 and the second groove wall 242 is sufficient.

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

Because when the airbag 3 is sealed, the airbag 3 is in contact with the first groove wall 241 and the second groove wall 242, therefore, on the one hand, the acute angle between the first groove wall 241 and the horizontal line along the front-to-back direction is relatively large, and the airbag 3 gives The force of the first groove wall 241 has a larger component in the backward direction, which can prevent the door body 2 from opening to a certain extent. It can also be understood that the greater the angle of the first groove wall 241, the better the holding effect on the airbag 3 .

On the other hand, the acute included angle between the second groove wall 242 and the horizontal line along the front-to-back direction is small, which can facilitate the setting of the second groove wall 242 longer, thereby increasing the contact area with the airbag 3. Small, when demolding, the clamping force between the second groove wall 242 and the punch is also smaller, so it is easier to realize demoulding. Therefore, in principle, it is only necessary to ensure that the angle between the second groove wall 242 and the horizontal line along the front-back direction is sufficient, and the smaller the better, the existence of the angle ensures the generation of closing force, and the smaller the angle, the easier it is to realize the door-closing force. mold.

Moreover, the length of the first groove wall 241 is shorter than the length of the second groove wall 242. On the one hand, because the acute angle between the first groove wall 241 and the horizontal line along the front-to-back direction is relatively large, the first groove wall 241 is set shorter. Some, so that when demoulding, the area of the first groove wall 241 holding the punch is smaller, which is more conducive to demoulding. On the other hand, the second groove wall 242 is set longer, so that the airbag 3 is mainly sealed with the second groove wall 242 after inflated, and the first groove wall 241 assists in holding the airbag 3 .

Wherein, due to the third to fifth embodiments of the door liner 21 of the refrigerator of the present invention, it can already generate the closing force by itself, that is, there is no need to set additional fixing devices to fix the door body 2 and the box body 1. Therefore, the door seal There is no need to install magnetic elements in 23. Since there are no magnetic elements, on the one hand, the cost increase can be reduced; The air in the storage space 12 performs heat exchange, so that the temperature in the storage space 12 rises slowly, thereby improving the heat preservation and sealing effects.

As shown in Figure 6 and Figure 7, it is another embodiment of the refrigerator airbag of the present invention, the airbag 3 has an inner airbag 31, an outer airbag 32 arranged outside the inner airbag 31, and a fixing part for fixing to the inner container 11 42.

In this embodiment, the outer airbag 32 can be integrally formed with the fixing portion 42 , and of course, it can also be assembled. The outer airbag 32 also has an installation port for installing the inner airbag 31 to its inside, the inner bag 11 is recessed with a groove 111 for accommodating the airbag 3, and the bottom of the groove 111 is further recessed with the fixed In this embodiment, the fixing part 42 is arranged in a triangular shape, but of course it can also be in other shapes. When the airbag 3 is installed, since the inner tank 11 is made of plastic material and has good elasticity, the fixing part 42 can be directly installed to the fixing groove by overcoming the elastic force of the inner tank 11 without worrying about the inner tank 11 being damaged.

When the airbag 3 is not inflated, the airbag 3 shrinks in the groove 111 and is semicircular, so that the door body 2 can be opened and closed smoothly, and the surface area of the inner airbag 31 is greater than the surface area of the outer airbag 32, that is, The inner airbag 31 is arranged in the outer airbag 32 in the form of multi-layer folds. When the inner airbag 31 is inflated, due to the larger surface area of the inner airbag 31, when the door is closed, the larger the area is under the same pressure, the greater the resulting pressure. The greater the pressure, therefore, the better the sealing effect.

In the state of opening the door, the outer wall of the outer airbag 32 adjacent to the lining frame 212 is flush with the inner wall 115 of the liner 11, that is, the inner airbag 31 is not inflated and the outer airbag 32 is in an undeformed state. state. At this time, the door body 2 can be opened and closed smoothly without being interfered by the outer air bag 32 .

In this embodiment, the elastic modulus of the outer air bag 32 is smaller than the elastic modulus of the inner air bag 31, and the greater the elastic modulus, the greater the rigidity, that is to say, the less likely to deform. Therefore, the outer air bag 32 is easier to deform than the inner airbag 31, that is, as long as the inner airbag 31 exerts force on the outer airbag 32, the outer airbag 32 will immediately deform.

On the one hand, it is easy to control the inflation amount of the inner airbag 31 , on the other hand, it is also possible to avoid excessive inflation of the inner airbag 31 and damage to the inner airbag 31 . Moreover, the outer airbag 32 is made of a wear-resistant material, so that even during long-term use, the outer airbag 32 is not easily damaged by friction with the lining frame 212 .

As shown in Figure 13 and Figure 14, in order to further improve the sealing effect and reduce the heat exchange efficiency, the air pump 5 of the refrigerator of the present invention fills the air bag 3 by inhaling colder gas from the inside of the refrigerator, so that the temperature in the air bag 3 and the storage space The temperature difference of 12 is small, even lower than the temperature in the storage space 12, thereby reducing the heat exchange and keeping the temperature in 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, and an evaporator located between the storage space 12 and the evaporation chamber 15. The air duct cover plate 17, the air pump 5 matched with the air bag 3, the air guide pipe 6 connected between the air bag inlet and the air pump charging port, the air pump 5 has the function of sucking air from the evaporation chamber 15 or the storage space 12 With the suction port that air bag 3 is inflated.

In this embodiment, the air pump 5 is arranged in the evaporation chamber 15. Generally, the temperature in the evaporation chamber 15 is lower than the temperature in the storage space 12. Therefore, the air pump 5 sucks air from the evaporation chamber 15 and fills it into the airbag 3, so that the temperature of the air in the airbag 3 is lower than the temperature in the storage space 12, reducing heat transfer and improving the sealing effect.

The air duct cover plate 17 has an air outlet 171 and an air return port 172 arranged opposite to each other front and rear or left and right. In this embodiment, the air outlet 171 and the air return port 172 are arranged opposite to each other. The evaporator 16 is arranged between the air outlet 171 and the return air outlet 172, and the air pump 5 is arranged between the air outlet 171 and the evaporator 16, that is, the air pump 5 is arranged on the air duct cover plate 17 on the side of the air outlet 171 , the evaporator 16 and the inner tank 11 surrounded by the formed space.

Therefore, on the one hand, disposing the air pump 5 in the evaporation chamber 15 can make full use of the space of the evaporation chamber 15, save the space of the storage space 12, and form a hidden design, which is more beautiful. On the other hand, the gas sucked by the air pump 5 is a low-temperature and low-humidity gas cooled by the evaporator 16. When the gas is filled into the air pump 5, since the temperature and humidity are low enough, it is not easy to precipitate liquid water, thereby reducing the In addition, the air pump 5 is a low temperature resistant air pump 5. In summary, the air pump 5, the air guide tube 6 and the air bag 3 can work for a long time without damage.

Of course, the air pump 5 and the air guide tube 6 can also be arranged in the storage space 12. Preferably, the air pump 5 is arranged on the rear side of the storage space 12, so that when the door 2 is opened, it is difficult for the user to see. The air guide tube 6 can extend back and forth along the inner wall 115 of the inner bag 11 to connect with the airbag inflation port, and the air guide tube 6 can be fixed by the fixing clip 9 . Or the outer side of air pump 5 and air guide tube 6 is provided with the protective cover of plastic material identical with inner bag 11 colors.

The refrigerator also includes a three-way valve 7 connected between the air guide tube 6 and the charging port of the air pump 5. The three-way valve 7 has a first opening 71 connected to the air pump charging port, a second opening 72 connected to the air guide tube 6, The third opening 73 for the exhaust of the airbag 3, the third opening 73 is provided with a solenoid valve, when the airbag 3 is inflated, the solenoid valve is closed, when the airbag 3 is exhausted, the solenoid valve is opened to exhaust through the third opening 73 .

By arranging the three-way valve 7 and controlling the opening and closing of the electromagnetic valve to further control the inflation and deflation of the airbag 3, it is only necessary to set the inflation port on the airbag 3, and there is no need to arrange an exhaust port, so that the structure of the airbag 3 is relatively simple. It is also convenient to be installed in the groove 111 of the liner 11 .

The air guide tube 6 includes a first air guide tube 61 connected to the inflation port of the air pump 5 and a second air guide tube 62 connected to the air inlet of the airbag 3. The first opening 71 and the second opening 72 of the three-way valve 7 are respectively connected to Between the first air duct 61 and the second air duct 62, the three-way valve 7 is arranged on the rear side of the air duct cover 17, that is, the three-way valve 7 is fixed on the air duct cover 17, and the first Three openings 73 pass through the air duct cover plate 17 and communicate with the storage space 12 . By arranging two air guide pipes 6 , it is not only convenient for the three-way valve 7 to be fixed on the air duct cover plate 17 , but also convenient for the third opening 73 to communicate with the storage space 12 .

On the one hand, the hidden design of the three-way valve 7 is realized to save the space of the storage space 12; How much gas is in the body 1, after the air bag 3 is deflated, the total amount of gas in the box body 1 remains unchanged, thereby avoiding negative pressure and ensuring the normal opening of the door body 2.

Of course, in other embodiments, the third opening 73 of the three-way valve 7 can also communicate with the evaporation chamber 15, so as to discharge the gas in the airbag 3 into the evaporation chamber 15, because the evaporation chamber 15 and the storage space 12 is generally connected through the air return port 172, therefore, negative pressure can also be avoided.

In this embodiment, the refrigerator also has a fixing frame 8 arranged on the rear side wall of the inner container 11, which is used to fix the air pump 5. Therefore, the air pump 5 is arranged on the rearmost side of the inner container 11 to ensure It is farthest away from the storage space 12, and the vibration generated by the air pump 5 has relatively little impact on the storage space 12. In addition, in order to reduce the vibration and noise generated by the air pump 5, it can also be coated on the outside of the air pump 5. Sound-absorbing and shock-absorbing materials.

The refrigerator also has a through hole (not shown) that runs through the bottom wall of the groove 111 to communicate with the foam layer. The air guide tube 6 is arranged in the foam layer and connected to the air bag 3 air inlet through the through hole. Ensure that the airbag 3 inflation port is sealed and connected with the air guide tube 6, and the front side of the air guide tube 6 can also be provided with an air nozzle, and the air bag 3 inflation port and the air nozzle can be fixed together through internal and external threads that cooperate with each other. Alternatively, the air guide tube 6 is directly connected to the inflation port of the airbag 3, and a separate sealing member is provided on the outside to prevent the airbag 3 from leaking.

The other end of the air guide tube 6 is connected to the three-way valve 7 in the evaporation chamber 15. Also to ensure the sealing between the air guide tube 6 and the three-way valve 7, the structure of the air guide tube 6 and the air bag 3 inflation port can be referred to above. In this embodiment, in order to prevent the air duct 6 from being bent and inflate the air bag 3 smoothly, the refrigerator also has a plurality of fixing clips 9 arranged at intervals along the front and rear directions to fix the air duct 6. Of course, in other embodiments, Embedded parts extending along the front and rear directions can be provided on the foam layer so as to install the air guide tube 6, and the air guide tube 6 is not easy to bend.

To sum up, the air pump 5 , the air guide tube 6 and the three-way valve 7 of this embodiment are all hidden designs, which improves the overall aesthetics and increases the volume ratio of the storage space 12 .

As shown in Figure 15, the present invention also provides a refrigerator control method, specifically, the refrigerator has a normal inflation mode and a fast inflation mode, and the control method includes:

Obtain the ambient temperature T of the refrigerator, and compare the ambient temperature T with the preset temperature T0. When T≥T0, the fast inflation mode is turned on, otherwise, the normal inflation mode is turned on;

The fast inflation mode specifically includes: obtaining the opening information of the door body 2, inflating the sealed air bag 3 between the refrigerator box 1 and the door body 2 after the door body 2 is opened, and obtaining the pressure p1 in the sealed air bag 3 at the same time. When the pressure p1 reaches the preset pressure p2, stop inflation;

Obtain the closing information of the door body 2, and after the door body 2 is closed, continue to inflate the aforementioned sealing air bag 3 until the pressure p1 in the sealing air bag 3 reaches the sealing pressure p3 and stop inflating.

The fast inflation mode is mainly to pre-charge the sealed airbag 3 with a certain amount of gas after the door body 2 is opened, so that after the door body 2 is closed, the inflation time for the sealed airbag 3 to be inflated to the sealing pressure p3 is reduced, so that the sealed airbag 3 Enter the sealed state in advance, reduce the heat exchange of the storage space 12, and improve the sealing effect.

Generally, a detection device is installed at the handle position of the refrigerator. When the user touches the handle, the detection device detects the action and feeds it back to the control unit.

The fast inflation mode can have two working modes, the first one is: first exhaust the sealed airbag 3 completely, and then inflate to p2; the second one is: control the exhaust of the sealed airbag 3 and detect the pressure in real time, when When it is detected that the pressure drops to p2, the exhaust valve is controlled to be closed.

Among them, in the second working mode, due to the faster exhaust speed of the sealed air bag 3, coupled with the sensitivity limitation of the detection instrument and the exhaust valve, it is difficult to precisely control the exhaust to p2, which is usually lower than p2, so it is still necessary to continue Re-inflate airbag 3 to p2.

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

And the gas in the airtight air bag 3 was filled by the air pump 5 from the evaporation chamber 15 when the door body 2 was closed last time. Therefore, there is a certain time interval from the last time the door body 2 is closed to the door body 2 is opened this time. The temperature of the gas in the airtight bag 3 will inevitably rise. Therefore, exhausting the gas in the airtight bag 3 before filling it with new low-temperature and low-humidity gas will help reduce heat exchange and improve the sealing effect.

Firstly, by judging the ambient temperature T of the refrigerator and the preset temperature T0, when T≥T0, it means that the current ambient temperature of the refrigerator is relatively high, and the working condition is relatively bad. Therefore, the fast inflation mode is turned on, otherwise, the refrigerator If the ambient temperature is low and the working condition is relatively good, the normal inflation mode will be turned on.

Assuming that the critical pressure of the sealed airbag 3 is p4 when it is inflated and deformed or not deformed, when the sealed airbag 3 is completely deflated, the sealed airbag 3 is in a wrinkled state, and is inflated from a wrinkled state to a non-wrinkled state. 3 is inflated, the material of the sealed airbag 3 is elastically deformed due to expansion, and p4 is the critical pressure of the elastically deformed and non-elastically deformed material of the sealed airbag 3 .

When the refrigerator is the refrigerator of the first embodiment, the p4 is the critical pressure at which the deformation part 41 of the fixing member 4 undergoes elastic deformation and does not undergo elastic deformation; when the refrigerator is the refrigerator of the second embodiment , the p4 is the critical pressure at which the outer air bag 32 undergoes elastic deformation and does not undergo elastic deformation.

Among them, p4×80%<p2<p4, setting the preset pressure p2 to a certain range can avoid repeated inflation if the pressure inside the sealed airbag 3 is detected to be lower than p2 when the preset pressure p2 is set to a fixed value Occurs, thereby reducing the working times of the air pump 5 and increasing the working life.

The fast inflation mode also includes: inflating the sealed air bag 3 between the refrigerator box 1 and the door 2 after the door 2 is opened, first obtaining the opening time t1 of the door 2, and when the opening time t1 reaches the preset time t0 , then compare p1 with p2, and when p1<p2, continue to inflate until p2 is reached. This is because it takes a certain amount of time to inflate the sealed airbag 3 to p2, and p2 cannot be reached at the initial stage of inflation. Therefore, there is no need to detect the pressure p1 in the sealed airbag 3 at the initial stage, thereby reducing the operating frequency of the pressure sensor.

Assuming that the critical pressure when the sealing airbag 3 is inflated to just produce a force on the door body 2 or the box body 1 is p5, then p5<p3<p5×120%, which is due to the need to make the sealing airbag 3 and the door body 2 or the box body 1 The sealing effect is better, usually make p3 slightly larger than p5, in order to avoid damage to door body 2 or box body 1 caused by excessive expansion of sealing air bag 3, p3 must not exceed a certain value.

The normal inflation mode includes: obtaining the opening information of the door body 2, controlling the sealing airbag 3 to completely exhaust, when the door body 2 is closed, obtaining the closing information of the door body 2, and inflating the sealing airbag 3, so that p1 rises from 0 to the sealing pressure p3 .

It can be seen that the normal inflation mode rises from 0 to p3, and the fast inflation mode rises from p2 to p3. Obviously, after the door body 2 is closed, the inflation time of the fast inflation mode is shorter than that of the normal inflation mode.

To sum up, in the refrigerator of the present invention, the inner container 11 or the liner frame 212 is recessed with a sealing groove 24 matched with the airbag 3. When the door is closed, the airbag 3 stretches into the sealing groove 24 after being inflated. And form a sealing fit with the inner wall of the sealing groove 24 . Not only can the sealing area of the airbag 3 be increased, but also the frictional force between the matching wall 214 and the airbag 3 can be increased, the opening force of the airbag 3 to the matching wall 214 can be reduced, and the fixing effect between the door body 2 and the box body 1 can be ensured, thereby improving Sealing effect.

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (11)

1. A refrigerator, comprising a box body with a liner, a door matched with the box body, the door body has a door liner, a storage space is formed between the door liner and the liner, and the door liner has a door liner The liner and the liner frame protruding backward from the door liner to the inside of the inner tank, the box body is formed with a frame mouth, and the door body is formed with a sealing portion opposite to the frame mouth on the outside of the liner frame , the sealing part is provided with a door seal that can be adsorbed to the mouth of the frame, and it is characterized in that: the refrigerator also includes an air bag fixed on one of the liner and the liner frame to seal the storage space, recessed in the On the other, there is a sealing groove matched with the airbag and an air pump matched with the airbag. In the closed state, the airbag stretches into the sealing groove after being inflated and forms a sealing fit with the inner wall of the sealing groove. The airbag is fixed on the On the inner liner, a groove and a fixing structure are formed at a position adjacent to the liner frame on the inner liner, the airbag is accommodated in the groove, and the refrigerator also includes a fixing member for fixing the airbag. The fixing part is fixed outside the airbag through the cooperation of the fixing part and the fixing structure. The fixing part has a deformation part that covers the outside of the air bag and elastically deforms as the air bag is inflated and deflated, and a fixing part connected with the deformation part to be fixed to the inner tank . 2. The refrigerator according to claim 1, wherein the airbag is fixed on the inner container, the lining frame has a matching wall adjacent to the inner container, and the matching wall is gradually oriented from the back to the front. The inner tank is arranged obliquely, and the sealing groove is formed by being recessed from the matching wall. 3. The refrigerator according to claim 2, wherein the matching wall has a first groove wall and a second groove wall which form the sealing groove and are connected back and forth, the first groove wall is located behind the second groove wall The first groove wall is formed by vertically extending from the matching wall toward the door liner, and the second groove wall is formed by extending obliquely forward from the end of the first groove wall toward the inner wall of the liner adjacent to the matching wall. 4. The refrigerator according to claim 2, wherein the matching wall has a first groove wall and a second groove wall which form the sealing groove and are connected back and forth, and the first groove wall faces away from the matching wall. The inner wall of the liner adjacent to the matching wall extends obliquely forward, and the second groove wall extends obliquely forward from the end of the first groove wall toward the inner wall of the liner adjacent to the matching wall. 5. The refrigerator according to claim 4, characterized in that: the acute angle between the first groove wall and the horizontal line along the front-back direction is larger than the acute angle between the second groove wall and the horizontal line along the front-back direction, so The length of the first groove wall is shorter than the length of the second groove wall. 6. The refrigerator according to claim 4, characterized in that: the length of the first groove wall is greater than the length of the second groove wall, and the acute angle between the first groove wall and the horizontal line along the front-to-back direction is smaller than the An acute angle is formed between the second groove wall and the horizontal line along the front-rear direction, and the airbag is in contact with the first groove wall when inflated to seal the storage space. 7. The refrigerator according to claim 2, wherein the matching wall has a first groove wall and a second groove wall that form the sealing groove and are connected back and forth, and the first groove wall faces away from the matching wall. The direction of the inner wall of the liner adjacent to the matching wall extends obliquely forward, and the second groove wall extends obliquely forward from the end of the first groove wall toward the direction away from the inner wall of the liner adjacent to the matching wall. In the door state, the airbag forms a sealing fit with the first groove wall and the second groove wall after being inflated. 8. The refrigerator according to claim 7, characterized in that: the acute angle between the first groove wall and the horizontal line along the front-back direction is larger than the acute angle between the second groove wall and the horizontal line along the front-back direction, so The length of the first groove wall is shorter than the length of the second groove wall. 9 . The refrigerator according to claim 1 , wherein the airbag is a multi-section structure, and two adjacent sections communicate with each other through air holes, and the diameter of the air hole is smaller than the diameter of each airbag after expansion. 10. The refrigerator according to claim 1, wherein the liner has an inner wall adjacent to the liner frame, and when the door is opened, the fixing member is adjacent to the outer wall of the liner frame and the inner wall. The inner walls of the gallbladder are even. 11. The refrigerator according to claim 1, wherein the inner container has an inner container body and a connecting piece fixed on the front end of the inner container body, and the groove and the fixing structure are formed on the connecting piece.

Images