CN112097445B

CN112097445B - A kind of refrigerator

Info

Publication number: CN112097445B
Application number: CN202010966249.3A
Authority: CN
Inventors: 欧阳景权; 高永红; 徐展帆
Original assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Current assignee: Hisense Ronshen Guangdong Refrigerator Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-11-30
Anticipated expiration: 2040-09-15
Also published as: CN112097445A

Abstract

The invention discloses a refrigerator, relates to the technical field of storage equipment, and aims to solve the problem that an air return pipe of the existing refrigerator is blocked due to icing in the inner volume of the air return pipe. The refrigerator comprises an inner container, a freezing chamber and a refrigerating chamber are formed in the inner container, a first air opening communicated with a circulating air duct of the freezing chamber is formed in the rear wall of the inner container corresponding to the freezing chamber, and a second air opening communicated with the circulating air duct of the refrigerating chamber is formed in the rear wall of the inner container corresponding to the refrigerating chamber; the return-air duct, including the preceding tube and the back tube of mutual lock, the upper end and the lower extreme of preceding tube all are connected with the back wall of inner bag, the lower wind gap with first wind gap intercommunication is seted up to the lower extreme of preceding tube, the last wind gap with second wind gap intercommunication is seted up to the upper end of preceding tube, the portion that lies in below the wind gap on the preceding tube has the concatenation seam between the lower extreme of back tube, the lower extreme of back tube extends to the direction that is close to preceding tube and is formed with the shielding part, the shielding part is used for sheltering from the concatenation seam. The invention is used for storing food materials.

Description

A kind of refrigerator

Technical Field

The invention relates to the technical field of storage equipment, in particular to a refrigerator.

Background

The refrigerator is a household appliance commonly used in daily life of people, the existing air-cooled refrigerator with upper refrigeration and lower refrigeration is a circulating air channel for communicating a refrigerating chamber with a circulating air channel of a freezing chamber through a return air pipe and an air supply pipe, low-temperature air in the circulating air channel of the freezing chamber is conveyed to the circulating air channel of the refrigerating chamber through the air supply channel and is used for reducing the temperature of the refrigerating chamber, then air with higher temperature in the circulating air channel of the refrigerating chamber is sent back to the circulating air channel of the freezing chamber through the return air pipe to exchange heat and cool, and therefore air in the refrigerator can flow circularly.

When the refrigerator works, the air temperature of the circulating air duct which is sent back to the freezing chamber from the circulating air duct of the storage chamber through the air return pipe is higher, and the temperature in the circulating air duct of the freezing chamber is lower, so that condensed water can be formed in the air flowing in the air return pipe due to temperature reduction, and the condensed water can flow into the circulating air duct of the freezing chamber along the air return pipe and flow into the water collecting box at the bottom of the refrigerator.

The above-mentioned return air duct generally adopts injection moulding, and for the convenience of drawing of patterns, the return air duct can set up to preceding tube 001 and back tube 002 of mutual lock joint, as shown in fig. 1, preceding tube 001 and back tube 002 lock each other to make inside tube chamber that forms the return air duct.

However, because in the above-mentioned return air duct, the back wall of its preceding tube 001 and inner bag is connected and the wind gap that is used for the intercommunication circulation wind channel is offered to the upper end and the lower extreme of tube in the front, consequently, after preceding tube 001 and the mutual lock of back tube 002, can have concatenation seam 003 along vertical direction between the two, when the comdenstion water flows to the bottom along the inner wall of preceding tube 001 and back tube 002, the comdenstion water can flow in the concatenation seam 003 between preceding tube 001 and the back tube 002, and pile up in concatenation seam 003 department, because the bottom temperature of return air duct is lower, accumulational comdenstion water can condense into ice, can cause the return air duct to be blocked by the ice that condenses along with the lapse of time, thereby influence refrigerator normal use.

Disclosure of Invention

The embodiment of the invention provides a refrigerator, which can enable condensed water in a return air pipe to rapidly flow out of a condenser pipe, avoid accumulation of the condensed water in the return air pipe, further avoid condensation of the condensed water into ice and guarantee normal operation of the refrigerator.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

an embodiment of the present invention provides a refrigerator, including:

the refrigerator comprises a refrigerating chamber, an inner container and a refrigerating chamber, wherein the refrigerating chamber and the refrigerating chamber are formed inside the inner container, the refrigerating chamber is positioned above the refrigerating chamber, a first air port communicated with a circulating air duct of the refrigerating chamber is formed in the rear wall of the inner container corresponding to the refrigerating chamber, and a second air port communicated with the circulating air duct of the refrigerating chamber is formed in the rear wall of the inner container corresponding to the refrigerating chamber;

the return air duct comprises a front duct and a rear duct which are mutually buckled, the upper end and the lower end of the front duct are connected with the rear wall of the inner container, the lower end of the front duct is provided with a lower air port communicated with the first air port, the upper end of the front duct is provided with an upper air port communicated with the second air port, the part below the lower air port on the front duct and the lower end of the rear duct are provided with a splicing seam, the lower end of the rear duct extends towards the direction close to the front duct to form a shielding part, and the shielding part is used for shielding the splicing seam.

The refrigerator provided by the embodiment of the invention is characterized in that the return air pipe comprises a front pipe shell and a rear pipe shell which are mutually buckled, the upper end and the lower end of the front pipe shell are connected with the rear wall of the liner, a splicing seam is arranged between the part of the front pipe shell below the lower air inlet and the lower end of the rear pipe shell, the lower end of the rear pipe shell extends towards the direction close to the front pipe shell to form a shielding part, the splicing seam can be shielded by the shielding part, so that condensate water can be prevented from flowing into the splicing seam between the front pipe shell and the rear pipe shell, the condensate water flows to the bottom surface along the inner wall of the rear pipe shell and then flows along the shielding part, the condensate water can cross the splicing seam between the front pipe shell and the rear pipe shell and then flows to the bottom surface of the front pipe shell, namely the lower air inlet, and finally flows into the circulating air duct of the freezing chamber, so that the condensate water can smoothly flow into the water collecting box at the bottom wall of the refrigerator, compared with the prior art, the return air pipe of the application has the shielding part shielding the splicing seam at the lower ends of the front pipe shell and the lower end of the rear pipe shell, make the comdenstion water can flow into the circulation wind channel of freezer smoothly in, avoided the comdenstion water to pile up in the return duct and condense into ice to guarantee that the return duct can not be blockked up, guarantee that the refrigerator can normal operating.

Furthermore, the shielding part is a shielding plate formed by extending the inner bottom surface of the rear tube shell towards the direction close to the front tube shell, the shielding plate is lapped on the edge of the bottom surface of the lower air opening close to the rear tube shell, and the width of the shielding plate is adapted to the width of the lower air opening.

Furthermore, the bottom surface of the inner part of the rear pipe shell and the bottom surface of the lower air opening are both inclined surfaces, and one side far away from the rear wall of the inner container is higher than one side close to the rear wall of the inner container.

Furthermore, the rear wall of the inner container is recessed inwards to form a first groove, the first air opening is formed in the bottom surface of the first groove, an installation plate is arranged on the outer wall of the lower end of the front tube shell and surrounds the lower air opening for a circle and is parallel to the rear wall of the inner container, the installation plate is arranged in the first groove, the surface, facing the inner container, of the installation plate is tightly attached to the bottom surface of the first groove, and the side wall of the installation plate is tightly attached to the side wall of the first groove for a circle.

Furthermore, two first grooves are formed in the rear wall of the inner container, the first air opening is formed in the bottom surface of one first groove, the second air opening is formed in the bottom surface of the other first groove, the mounting plates are arranged on the outer walls of the lower end and the upper end of the front tube shell, the mounting plates are arranged in the corresponding first grooves respectively, the surface, facing the inner container, of the mounting plate is tightly attached to the bottom surfaces of the first grooves, and the side walls of the mounting plates are tightly attached to the side walls of the first grooves in a circle.

Still further, the depth of the first groove is greater than or equal to the thickness of the mounting plate.

Furthermore, an annular bulge is arranged on the surface, facing the inner container, of the mounting plate, the annular bulge is arranged around the lower air opening or the upper air opening in a circle, the annular bulge is inserted into the first air opening or the second air opening, a clamping bulge is arranged on the outer side wall of the annular bulge, and the clamping bulge is abutted against the inner wall of the inner container;

preferably, the clamping protrusion is arranged around the lower air inlet in a circle.

Furthermore, the bottom of the first groove is recessed towards the inner container to form a second groove, and the first air opening or the second air opening is arranged on the bottom surface of the second groove.

Furthermore, the surface of the clamping protrusion facing the inner container is a guide inclined surface, and the guide inclined surface is used for guiding the annular protrusion to be inserted into the first air opening or the second air opening.

Furthermore, preceding tube orientation be provided with the frame on the face of back tube, the frame is followed the border a week of preceding tube sets up, set up a plurality of axes on the inner wall of frame and be on a parallel with the joint hole of wall behind the inner bag, be provided with a plurality of lugs on the lateral wall of back tube, the lateral wall of back tube with the inner wall of frame is laminated each other, a plurality of lugs and a plurality of joint hole one-to-one joint.

Drawings

FIG. 1 is a schematic sectional view of a return air duct of a refrigerator according to the prior art;

fig. 2 is a schematic view of an overall structure of a refrigerator according to an embodiment of the present invention;

fig. 3 is an exploded view of a refrigerator according to an embodiment of the present invention;

fig. 4 is a front view of a refrigerator according to an embodiment of the present invention;

FIG. 5 is a partial cross-sectional view A-A of FIG. 4;

FIG. 6 is an enlarged view of area B of FIG. 5;

FIG. 7 is an enlarged partial cross-sectional view of a return air duct provided in accordance with an embodiment of the present invention;

FIG. 8 is a side view of an exploded structure of the inner bladder and return air duct provided in accordance with an embodiment of the present invention;

FIG. 9 is an enlarged view of area C of FIG. 8;

fig. 10 is an enlarged view of a region D of fig. 3.

Reference numerals: 100. a box body; 110. a housing; 120. an inner container; 121. a first tuyere; 122. a second tuyere; 123. a first groove; 124. a second groove; 200. a return air duct; 210. a front case; 211. a lower tuyere; 212. an air inlet; 213. mounting a plate; 214. an annular projection; 215. clamping the bulges; 216. a guide slope; 217. a frame; 218. a clamping hole; 220. a rear pipe shell; 221. a shielding plate; 222. a bump; 230. and (6) splicing seams.

Detailed Description

A refrigerator according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 2 is a perspective view of a specific embodiment of a refrigerator according to an embodiment of the present invention, which has an approximately rectangular parallelepiped shape. The appearance of the refrigerator is defined by a storage chamber defining a storage space, which is a cabinet 100 having an opening, and a plurality of door bodies provided in the storage chamber, which is vertically partitioned into a lower freezing chamber and an upper refrigerating chamber. Each of the partitioned spaces may have an independent storage space.

In detail, the freezing compartment is defined at a lower side of the storage compartment and may be selectively covered by a drawer type freezing compartment door. The space defined above the freezing chamber is partitioned into left and right sides to respectively define the refrigerating chamber. The refrigerating chamber is selectively opened or closed by a refrigerating chamber door pivotably mounted on the refrigerating chamber.

As shown in fig. 2, the cabinet 100 according to the embodiment of the present invention includes a housing 110 and an inner container 120 disposed inside the housing 110, the inner container 120 forms the freezing chamber and the refrigerating chamber, and a circulation air duct of the freezing chamber and a circulation air duct of the refrigerating chamber are communicated with each other through a blast pipe and a return air pipe 200, so that air inside the cabinet 100 can flow circularly.

In some embodiments, one inner container 120 may be disposed inside the outer casing 110 of the box 100, and a freezing chamber and a refrigerating chamber that are independent from each other are formed inside the inner container 120, or two inner containers 120 that are independent from each other are disposed inside the outer casing 110, the refrigerating chamber is formed inside the inner container 120 located above, and the freezing chamber is formed inside the inner container 120 located below, which will be described later in this application.

In the box 100 provided by the embodiment of the present invention, as shown in fig. 3, a first air opening 121 communicated with a circulation air duct of the freezing chamber is formed in a rear wall of the inner container 120 corresponding to the freezing chamber, a second air opening 122 communicated with a circulation air duct of the refrigerating chamber is formed in a rear wall of the inner container 120 corresponding to the refrigerating chamber, and the first air opening 121 and the second air opening 122 are communicated with each other through the air return duct 200.

As shown in fig. 3, the return air duct 200 provided in the embodiment of the present invention includes a front duct shell 210 and a rear duct shell 220 that are fastened to each other, the upper end and the lower end of the front duct shell 210 are both connected to the rear wall of the inner container 120, the lower end of the front duct shell 210 is provided with a lower air inlet 211 communicated with the first air inlet 121, the upper end of the front duct shell 210 is provided with an upper air inlet 212 communicated with the second air inlet 122, as shown in fig. 7, a splicing seam 230 is provided between a portion of the front duct shell 210 located below the lower air inlet 211 and the lower end of the rear duct shell 220, and the lower end of the rear duct shell 220 extends towards the front duct shell 210 to form a shielding portion, where the shielding portion is used for shielding the splicing seam 230.

In the refrigerator provided by the embodiment of the invention, the return air duct 200 comprises a front tube shell 210 and a rear tube shell 220 which are mutually buckled, the upper end and the lower end of the front tube shell 210 are connected with the rear wall of the inner container 120, a splicing seam 230 is arranged between the part of the front tube shell 210, which is positioned below the lower air opening 211, and the lower end of the rear tube shell 220, a shielding part is formed by extending the lower end of the rear tube shell 220 to the direction close to the front tube shell 210, the splicing seam 230 can be shielded by the shielding part, so that condensed water can be prevented from flowing into the splicing seam 230 between the front tube shell 210 and the rear tube shell 220, the condensed water flows to the bottom surface along the inner wall of the rear tube shell 220, then flows along the shielding part, can cross the splicing seam 230 between the front tube shell 210 and the rear tube shell 220, then flows to the bottom surface of the front tube shell 210, namely the lower air opening 211, and finally flows into the circulating air duct of the freezing chamber, so that the condensed water can smoothly flow into the water collecting box on the bottom wall of the refrigerator, compared with the prior art, the return air pipe 200 of the application shields the splicing seam 230 at the lower ends of the front pipe shell 210 and the rear pipe shell 220 through the shielding part, so that condensed water can smoothly flow into a circulating air duct of the freezing chamber, the condensed water is prevented from being accumulated in the return air pipe 200 and condensed into ice, the return air pipe 200 is prevented from being blocked, and the normal operation of the refrigerator is ensured.

As shown in fig. 4, 5 and 6, the shielding portion provided by the embodiment of the present invention is a shielding plate 221 formed by extending the inner bottom surface of the rear tube housing 220 toward the front tube housing 210, as shown in fig. 7, the shielding plate 221 is overlapped on the bottom surface of the lower air inlet 211 near the edge of the rear tube housing 220, and the width of the shielding plate 221 is adapted to the width of the lower air inlet 211. The shielding plate 221 formed by extending the direction close to the front tube shell 210 on the bottom surface of the rear tube shell 220 enables the shielding plate 221 to be lapped at the edge of the lower air opening 211, the width of the shielding plate 221 is adapted to the width of the lower air opening 211, the shielding plate 221 can shield the splicing seam 230 formed below the lower air opening 211, condensed water flows down along the inner wall of the rear tube shell 220, the condensed water flows along the top surface of the shielding plate 221, the splicing seam 230 formed between the front tube shell 210 and the rear tube shell 220 is crossed, the condensed water is guaranteed to smoothly flow into the circulating air duct of the freezing chamber, the condensed water is prevented from being accumulated and condensed at the splicing seam 230, and the normal operation of the refrigerator is guaranteed.

As shown in fig. 6 and 7, the bottom surface of the rear tube shell 220 and the bottom surface of the downdraft opening 211 provided in the embodiment of the present invention are both inclined surfaces, and one side far away from the rear wall of the inner container 120 is higher than one side close to the rear wall of the inner container 120. The bottom surface of the inner part of the rear pipe shell 220 and the bottom surface of the lower air inlet 211 are inclined planes, so that the flowing speed of the condensed water can be accelerated, and the condensed water is prevented from being condensed into ice in the flowing process.

As shown in fig. 8 and 9, a first groove 123 is formed in the rear wall of the inner container 120 in an inward recessed manner, the first air opening 121 is disposed on the bottom surface of the first groove 123, as shown in fig. 6 and 7, an installation plate 213 is disposed on the outer wall of the lower end of the front tube housing 210, the installation plate 213 is disposed around the lower air opening 211 by one circle and is parallel to the rear wall of the inner container 120, the installation plate 213 is disposed in the first groove 123, the surface of the installation plate 213 facing the inner container 120 is tightly attached to the bottom surface of the first groove 123, and the side wall of the installation plate 213 is tightly attached to the side wall of the first groove 123 by one circle. Through the first groove 123 that sets up on the back wall of inner bag 120, make the face of the mounting panel 213 that sets up on the preceding tube shell 210 closely laminate with first groove 123 to the lateral wall of mounting panel 213 a week all closely laminates with the lateral wall of first groove 123, consequently, can prevent that the foaming material between shell 110 and inner bag 120 from getting into the inner bag 120 inside from the gap between the back wall of mounting panel 213 and inner bag 120, guarantees the heat preservation performance of box 100.

In some embodiments, the mounting plate 213 may be disposed only at the lower end of the front case 210, such that the mounting plate 213 is disposed in the first groove 123, thereby preventing the foaming material from entering the inner container 120 from the first tuyere 121, that is, the above-mentioned structure; the mounting plates 213 can be arranged at the upper end and the lower end of the front tube shell 210, the first grooves 123 are formed in the rear wall of the inner container 120 corresponding to the freezing chamber and the rear wall of the inner container 120 corresponding to the refrigerating chamber, and then the mounting plates 213 at the upper end and the lower end of the front tube shell 210 are respectively arranged in the corresponding first grooves 123, so that the foaming material can be ensured not to leak into the first air opening 121 or the second air opening 122, and the heat insulation performance of the box body 100 is further ensured.

In some embodiments, as shown in fig. 6 and 7, the depth of the first groove 123 is greater than or equal to the thickness of the mounting plate 213. The depth of the first groove 123 is greater than or equal to the thickness of the mounting plate 213, so that the contact area between the side wall of the mounting plate 213 and the side wall of the first groove 123 is maximized, and the foaming material is prevented from penetrating into the gap between the mounting plate 213 and the rear wall of the inner container 120 to the maximum extent.

As shown in fig. 3, 6, and 7, an annular protrusion 214 is disposed on a surface of the mounting plate 213 facing the inner container 120, the annular protrusion 214 is disposed around the lower air opening 211 or the upper air opening 212 for a circle, the annular protrusion 214 is inserted into the first air opening 121 or the second air opening 122, a clamping protrusion 215 is disposed on an outer side wall of the annular protrusion 214, and the clamping protrusion 215 abuts against an inner wall of the inner container 120. Insert inside first wind gap 121 or the second wind gap 122 through annular protrusion 214 to make the protruding 215 joint of joint that sets up on the annular protrusion 214 on the inner wall of inner bag 120, thereby can make preceding cartridge 210 and inner bag 120's back wall realize relatively fixed connection through joint arch 215, need not fix preceding cartridge 210 through modes such as sticky tape again, it is more convenient to install, and the connection structure between preceding cartridge 210 and the inner bag 120 is more firm.

As shown in fig. 3, 6, and 9, a second groove 124 is formed by recessing the groove bottom of the first groove 123 toward the inner container 120, and the first tuyere 121 or the second tuyere 122 is opened on the bottom surface of the second groove 124. Through the second groove 124, when the front tube shell 210 is installed, the connection part of the bottom surface and the side wall of the second groove 124 can be deformed, so that the clamping protrusion 215 on the front tube shell 210 can be clamped into the inner wall of the inner container 120 more easily.

As shown in fig. 6 and 7, a surface of the clamping protrusion 215 facing the inside of the inner container 120 according to the embodiment of the present invention is a guiding inclined surface 216, and the guiding inclined surface 216 is used for guiding the annular protrusion 214 to be inserted into the first tuyere 121 or the second tuyere 122. The guide slope 216 is provided on the clamping protrusion 215, so that the clamping protrusion 215 can be guided to be clamped into the inner wall of the inner container 120 more easily.

In some embodiments, as shown in fig. 6 and 7, the clamping protrusion 215 is disposed around the circumference of the downdraft 211. Make protruding 215 of joint around wind gap 211 a week setting down, when the protruding 215 joint of joint was on the inner wall of inner bag 120, can make the atress between the protruding 215 of joint and the inner wall of inner bag 120 more even, avoided taking place because of the local too big condition that leads to part local damage of atress.

As shown in fig. 3 and 10, a side frame 217 is disposed on a surface of the front case 210 facing the rear case 220, the side frame 217 is disposed along a circumference of the front case 210, a plurality of fastening holes 218 whose axes are parallel to a rear wall of the inner container 120 are disposed on an inner wall of the side frame 217, a plurality of protrusions 222 are disposed on an outer side wall of the rear case 220, an outer side wall of the rear case 220 is attached to the inner wall of the side frame 217, and the plurality of protrusions 222 are fastened to the plurality of fastening holes 218 in a one-to-one correspondence manner. Through set up a framework in the front on tube 210, stretch into in the framework with the edge of back tube 220, the lateral wall of back tube 220 and the inner wall laminating of framework, and joint hole 218 has been seted up in the framework, be provided with lug 222 on the lateral wall of back tube 220, lug 222 joint is in joint hole 218, thereby realize the relative fastening between tube 210 and the back tube 220 before, make the two form return air duct 200, and because in back tube 220 stretched into the framework, the gap between tube 210 and the back tube 220 shelters from before frame 217 will be promptly, thereby can prevent debris entering return air duct 200's lumen, avoid the inside jam of return air duct 200.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A refrigerator, characterized by comprising:

2. The refrigerator as claimed in claim 1, wherein the shielding part is a shielding plate formed by extending the inner bottom surface of the rear tube shell to the direction close to the front tube shell, the shielding plate is overlapped on the bottom surface of the lower air opening close to the edge of the rear tube shell, and the width of the shielding plate is adapted to the width of the lower air opening.

3. The refrigerator as claimed in claim 2, wherein the bottom surface of the inside of the rear tube case and the bottom surface of the lower air inlet are both inclined surfaces, and one side far away from the rear wall of the inner container is higher than one side close to the rear wall of the inner container.

4. The refrigerator as claimed in claim 2, wherein the rear wall of the inner container is recessed inwardly to form a first groove, the first air inlet is opened on the bottom surface of the first groove, the outer wall of the lower end of the front tube shell is provided with a mounting plate, the mounting plate is arranged around the lower air inlet for a circle and is parallel to the rear wall of the inner container, the mounting plate is arranged in the first groove, the surface of the mounting plate facing the inner container is tightly attached to the bottom surface of the first groove, and the side wall of the mounting plate is tightly attached to the side wall of the first groove for a circle.

5. The refrigerator as claimed in claim 4, wherein the inner container has two first grooves formed on a rear wall thereof, the first air inlet is formed on a bottom surface of one of the first grooves, the second air inlet is formed on a bottom surface of the other of the first grooves, the mounting plates are respectively formed on outer walls of a lower end and an upper end of the front case, the mounting plates are respectively disposed in the corresponding first grooves, a surface of the mounting plate facing the inner container is closely attached to the bottom surfaces of the first grooves, and a periphery of a side wall of the mounting plate is closely attached to a periphery of a side wall of the first groove.

6. The refrigerator according to claim 4 or 5, wherein a depth of the first groove is greater than or equal to a thickness of the mounting plate.

7. The refrigerator according to claim 4 or 5, wherein an annular protrusion is arranged on a surface of the mounting plate facing the inner container, the annular protrusion is arranged around the lower air opening or the upper air opening by one circle, the annular protrusion is inserted into the first air opening or the second air opening, a clamping protrusion is arranged on an outer side wall of the annular protrusion, and the clamping protrusion abuts against an inner wall of the inner container;

8. The refrigerator as claimed in claim 7, wherein a groove bottom of the first groove is recessed into the inner container to form a second groove, and the first air opening or the second air opening is opened on a bottom surface of the second groove.

9. The refrigerator as claimed in claim 7, wherein a surface of the clamping protrusion facing the inner container is a guide slope for guiding the annular protrusion to be inserted into the first air opening or the second air opening.

10. The refrigerator as claimed in any one of claims 1 to 5, wherein a frame is disposed on a surface of the front case facing the rear case, the frame is disposed along a circumference of the front case, a plurality of engaging holes having an axis parallel to a rear wall of the inner container are formed on an inner wall of the frame, a plurality of protrusions are disposed on an outer sidewall of the rear case, an outer sidewall of the rear case is attached to an inner wall of the frame, and the plurality of protrusions are engaged with the plurality of engaging holes in a one-to-one correspondence manner.