WO2024199235A1 - Refrigerator - Google Patents

Abstract

The present application provides a refrigerator, comprising inner containers and heat insulation cover plates. Each inner container is opened forwards. Each heat insulation cover plate is arranged inside each inner container so as to define an evaporator chamber together with the rear wall of the inner container. The heat insulation cover plate further comprises a housing plate and a heat insulation and preservation plate; the housing plate defines a heat insulation space; the heat insulation and preservation plate is arranged in the heat insulation space; and a gap between the periphery of the heat insulation and preservation plate and the inner wall of the heat insulation space is filled with a heat insulation and preservation foam material. According to the present application, cold transferred to a storage compartment by the evaporator chamber by means of the heat insulation cover plate can be reduced.

Description

refrigerator

This application is based on the Chinese patent application with application number CN202310311212.0 and application date March 27, 2023, and claims the priority of the Chinese patent application. The entire content of the above patent application is hereby introduced into this application as a reference.

Technical Field

The present application relates to refrigeration and freezing technology, and in particular to a refrigerator.

Background Art

The air-cooled refrigerator has an evaporator chamber for accommodating an evaporator in the box body, and the evaporator chamber needs to be closed by a cover plate to form a relatively sealed environment. In order to reduce the amount of cold that is directly transferred from the evaporator chamber to the storage compartment through the cover plate, it is necessary to further improve the heat preservation of the cover plate.

The reference to any prior art in the specification is not an acknowledgement or suggestion that the prior art forms part of the common general knowledge in any jurisdiction, or that it could reasonably be expected that the prior art would be understood, considered relevant and/or combined with other prior art by a person skilled in the art.

Summary of the invention

An object of the present application is to overcome at least one defect in the prior art and provide a refrigerator.

A further object of the present application is to improve the thermal insulation performance of the thermal insulation cover plate and reduce the amount of cold transferred from the evaporator chamber to the storage compartment through the thermal insulation cover plate.

Another further purpose of the present application is to improve the sealing of the thermal insulation cover plate and further enhance the thermal insulation performance of the thermal insulation cover plate.

In particular, the present application provides a refrigerator, including an inner tank and an insulating cover plate, wherein the inner tank is open forward, and the insulating cover plate is arranged inside the inner tank to define an evaporator chamber together with the rear wall of the inner tank; the insulating cover plate also includes: a shell plate, which defines an insulating space; an insulating plate, which is arranged in the insulating space, and the gap between the insulating plate and the inner wall of the insulating space is filled with insulating foam material.

Optionally, the shell plate includes a front shell plate and a rear shell plate arranged front and rear, and the front shell plate and the rear shell plate are buckled together to define a heat-insulating space.

Optionally, the rear shell plate also includes an outer plate and a first raised plate, the outer plate has an inner edge, the first raised plate is located on the rear side of the outer plate, the orthographic projection of the first raised plate to the outer plate is located inside the outer plate, and the outer edge of the first raised plate is connected to the inner edge of the outer plate via a first connecting plate; the rear wall of the inner tank includes a first abutting wall and a second abutting wall, the first abutting wall has an inner edge, the second abutting wall is located on the rear side of the first abutting wall, and the outer edge of the second abutting wall is connected to the inner edge of the first abutting wall via a first connecting wall; the refrigerator is configured such that: when the shell plate is installed on the rear wall of the inner tank, the outer plate is in contact with the first abutting wall, and the first raised plate is in contact with the second abutting wall.

Optionally, the refrigerator is further configured such that when the shell plate is mounted on the rear wall of the inner container, the first connecting plate fits against the first connecting wall.

Optionally, the first raised plate has an inner edge; the rear shell plate also includes a second raised plate, the second raised plate is located on the rear side of the first raised plate, the orthographic projection of the second raised plate to the first raised plate is located inside the first raised plate, and the outer edge of the second raised plate is connected to the inner edge of the first raised plate via a second connecting plate; the rear wall of the inner tank includes a third abutting wall, the third abutting wall is located on the rear side of the second abutting wall, and the outer edge of the third abutting wall is connected to the inner edge of the second abutting wall via a second connecting wall; the refrigerator is configured such that: when the shell plate is installed on the rear wall of the inner tank, the second connecting plate fits against the second connecting wall.

Optionally, the rear shell plate also includes: a feed part, which is a cover body open forward and connected to the rear side of the second raised plate, and a filling port for filling the thermal insulation foam material is opened on the top. The feed part is configured to guide the thermal insulation foam material injected into it from the filling port to the front side of the second raised plate.

Optionally, the feed portion has a rear plate parallel to the second raised plate and a guide plate connected between the second raised plate and the lower edge of the rear plate; the guide plate is arranged to extend from back to front and downward to guide the thermal insulation foaming material to the front side of the second raised plate.

Optionally, the third abutting wall, the second connecting wall and the second raised plate jointly define an evaporator chamber; and the heat-insulating plate is configured so that its orthographic projection onto the rear wall of the inner tank completely covers the evaporator chamber.

Optionally, a plurality of guide grooves arranged in a transverse interval are formed on the front surface of the second raised plate to guide the thermal insulation foam material; and/or a plurality of foaming exhaust holes are opened on the second raised plate to exhaust the air in the insulation space.

Optionally, the thermal insulation cover plate further includes: an external thermal insulation layer, which is arranged on the rear side of the shell plate to improve the thermal insulation properties of the thermal insulation cover plate.

The refrigerator of the present application has a heat-insulating cover plate arranged inside the inner tank to define an evaporator chamber for accommodating the evaporator together with the rear wall of the inner tank, a heat-insulating space is defined inside the shell plate of the heat-insulating cover plate, a heat-insulating board is arranged in the heat-insulating space, and a gap between the heat-insulating board and the inner wall of the heat-insulating space is filled with a heat-insulating foam material, the heat-insulating board and the heat-insulating foam material can greatly improve the heat-insulating performance of the heat-insulating cover plate, and reduce the amount of cold transferred from the evaporator chamber to the storage compartment through the heat-insulating cover plate.

Furthermore, in the refrigerator of the present application, the outer plate of the rear shell plate has an inner edge, the first protruding plate of the rear shell plate is located on the rear side of the outer plate, the orthographic projection of the first protruding plate to the outer plate is located inside the outer plate, the outer edge of the first protruding plate is connected to the inner edge of the outer plate by a first connecting plate, the first abutting wall of the inner tank has an inner edge, the second abutting wall is located on the rear side of the first abutting wall, the outer edge of the second abutting wall is connected to the inner edge of the first abutting wall by the first connecting wall, and when the shell plate is installed on the rear wall of the inner tank, the outer plate is in contact with the first abutting wall, and the first protruding plate is in contact with the second abutting wall, thereby further improving the thermal insulation performance of the insulation cover plate.

As used herein, the term "comprise" and variations of the term, such as "comprises", "comprised", "comprising", "including", and "containing" do not exclude other features, components, elements or steps, unless the context clearly requires otherwise.

Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, some specific embodiments of the present application will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG1 is a schematic diagram of a refrigerator according to an embodiment of the present application;

FIG2 is a schematic diagram of the positional relationship between an inner container and a heat-insulating cover plate according to an embodiment of the present application;

FIG3 is an exploded view of an inner container and a heat-insulating cover plate according to an embodiment of the present application;

FIG4 is a schematic diagram of the installation relationship between the inner container and the heat insulation cover plate according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a rear shell plate in a heat-insulating cover plate according to an embodiment of the present application.

DETAILED DESCRIPTION

In the description of this embodiment, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "depth" and the like indicate positions or position relationships based on the position in normal use as a reference, and can be determined with reference to the position or position relationship shown in the accompanying drawings, for example, the "front" indicating the position refers to the side facing the user. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

Referring to FIGS. 1 to 3 , the present application provides a refrigerator 1 , which may include a box body 10 , which may include an outer shell and one or more inner tanks 12 , and the outer shell is located at the outermost side of the whole refrigerator 1 to protect the entire refrigerator 1 . The space between the inner tank 12 and the outer shell and between different inner tanks 12 is filled with a heat-insulating material (forming a foaming layer) to reduce the heat dissipation of the inner tank 12 to the outside. Each inner tank 12 may define a storage compartment 120 open to the front, and the storage compartment 120 may be configured as a refrigerator, a freezer, a variable temperature chamber, and the like. The number and function of the specific storage compartments 120 may be configured according to pre-determined requirements. In some embodiments, the storage temperature of the refrigerator may be 2 to 9° C., or 4 to 7° C.; the storage temperature of the freezer may be -22 to -14° C. or -20 to 16° C., and the variable temperature chamber may be adjusted according to requirements to store suitable food or as a fresh-keeping storage compartment.

Furthermore, the storage compartment 120 of the box body 10 can be further divided into a plurality of independent spaces so that the user can store different types of food. For example, the storage compartment 120 can also be divided into an ice making room for making ice and crushing ice.

Further, the refrigerator 1 may include a door body 20, which is arranged at the front side of the box body 10 and is used to open and close the storage compartment 120. For example, the door body 20 may be arranged at one side of the front part of the box body 10 in a hinged manner, and the storage compartment 120 may be opened and closed by pivoting. The number of door bodies 20 may match the number of storage compartments 120, so that the storage compartments 120 may be opened one by one. For example, a refrigerator door body, a freezer door body, and a variable temperature room door body may be provided for the refrigerator compartment, the freezer compartment, and the variable temperature room, respectively. In some optional embodiments, the door body 20 may also be in the form of a swing door, a double door, a side sliding door, a drawer door, etc.

Furthermore, the refrigerator 1 may also include a refrigeration system, which provides cold capacity to achieve a refrigerated, frozen, or variable temperature storage environment. The refrigeration system may be a refrigeration cycle system composed of a compressor, a condenser, a throttling device, and an evaporator. The evaporator is configured to directly or indirectly provide cold capacity to the storage compartment 120. Referring to FIG. 4 , for example, in an air-cooled refrigerator 1, the cabinet 10 further includes an evaporator chamber 14, which is connected to the storage compartment 120 through an air duct system, and an evaporator is provided in the evaporator chamber 14, and a fan is provided at the outlet to circulate refrigeration to the storage compartment 120.

It should be noted that the number and position of the evaporators can be configured according to actual conditions. For example, there is one evaporator, that is, a single-system refrigeration system is adopted, and the evaporator chamber 14 can be formed in the freezing inner tank 12. The evaporator chamber 14 is connected to all storage compartments 120 through an air duct system, so that a single evaporator can provide cooling for all storage compartments 120. For another example, there are two evaporators, that is, a dual-system refrigeration system is adopted, and the two evaporators provide cooling for the freezing compartment and the refrigerating compartment respectively, and the evaporator chambers 14 for accommodating the two evaporators are respectively formed in the corresponding inner tank 12.

In addition, the evaporator can be arranged according to the specific functions of the refrigerator 1. For example, a small evaporator can be separately arranged for the ice making chamber mentioned above to provide coldness for forming ice cubes.

2 to 4 , in some embodiments, the refrigerator 1 may further include a heat-insulating cover plate 30 , which is disposed inside the inner tank 12 to define an evaporator chamber 14 for accommodating an evaporator together with a rear wall of the inner tank 12 .

The heat insulating cover plate 30 may further include a shell plate and a heat insulating plate 330. The shell plate defines a heat insulating space 302 inside, the heat insulating plate 330 is disposed in the heat insulating space 302, and the gap between the heat insulating plate 330 and the inner wall of the heat insulating space 302 is filled with heat insulating foam.

The heat insulation board 330 can be a vacuum insulation board (VIP board), which is a kind of vacuum insulation material, composed of a filling core material and a vacuum protective surface layer, which can avoid heat transfer caused by air convection, and has a low thermal conductivity, which is generally less than 0.035W/m•k. When it is set in the heat insulation space 302 of the shell plate, it can greatly improve the heat insulation performance of the heat insulation cover plate 30 and reduce the cold amount transferred from the evaporator chamber 14 to the storage compartment 120 through the heat insulation cover plate 30.

Furthermore, the gap between the heat insulation board 330 and the inner wall of the heat insulation space 302 is filled with heat insulation foam. The heat insulation foam is used to fix the position of the heat insulation board 330 in the heat insulation space 302, so that the internal structure of the heat insulation cover 30 is more stable; secondly, the heat insulation foam itself has excellent heat insulation performance, which can also improve the heat insulation performance of the heat insulation cover 30.

It should be noted that the heat-insulating cover plate 30 can be used to form any evaporator chamber 14, and the present application does not impose any special restrictions on this. However, technicians have found that when the heat-insulating cover plate 30 is used to form the ice-making evaporator chamber 14, the ice-making evaporator chamber 14 can be moved from the freezer to the refrigerator due to its excellent heat-insulating and heat-preserving capabilities, thereby preventing the smell in the freezer from being transferred to the ice cubes, thereby improving the quality of ice making.

3 to 5 , FIG. 5 a shows the front side of the rear shell plate 320 , and FIG. 5 b shows the rear side of the rear shell plate 320 .

In some embodiments, the shell plate may further include a front shell plate 310 and a rear shell plate 320 disposed front and rear, and the front shell plate 310 and the rear shell plate 320 are buckled together to define a heat-insulating space 302 .

Specifically, a positioning groove 312 may be provided on the rear periphery of the front shell plate 310, and a positioning protrusion 321 may be provided on the front periphery of the rear shell plate 320, and the two may cooperate to achieve a pre-connection when the front shell plate 310 and the rear shell plate 320 are buckled. After the front shell plate 310 and the rear shell plate 320 are buckled, they may be further fastened and connected by fasteners such as screws and buckles.

Furthermore, the rear shell plate 320 may also include an outer plate 322 and a first protruding plate 323, the outer plate 322 has an inner edge, the first protruding plate 323 is located on the rear side of the outer plate 322, the orthographic projection of the first protruding plate 323 onto the outer plate 322 is located inside the outer plate 322, and the outer edge of the first protruding plate 323 is connected to the inner edge of the outer plate 322 via a first connecting plate 324.

The rear wall of the inner liner 12 may further include a first abutting wall 121 and a second abutting wall 122, wherein the first abutting wall 121 has an inner edge, the second abutting wall 122 is located at the rear side of the first abutting wall 121, and the outer edge of the second abutting wall 122 is connected to the inner edge of the first abutting wall 121 via a first connecting wall 123. Referring to FIG. 4 , when the shell plate is mounted on the rear wall of the inner liner 12, the outer plate 322 is in contact with the first abutting wall 121, and the first protruding plate 323 is in contact with the second abutting wall 122.

That is to say, the rear shell plate 320 forms a first step using the outer plate 322 and the first protruding plate 323, and the rear wall of the inner liner 12 also forms a second step using the first abutting wall 121 and the second abutting wall 122. When the insulation cover plate 30 is assembled to the rear wall of the inner liner 12, the first step is connected to the second step, which can improve the sealing between the insulation cover plate 30 and the rear wall of the inner liner 12, and further improve the thermal insulation performance of the insulation cover plate 30.

Further, as shown in FIG. 4 , when the shell plate is installed on the rear wall of the inner liner 12, the first connecting plate 324 fits with the first connecting wall 123, which not only further improves the sealing between the thermal insulation cover plate 30 and the rear wall of the inner liner 12, but also can utilize the cooperation between the first connecting plate 324 and the first connecting wall 123 to constrain the freedom of movement of the thermal insulation cover plate 30 in the height direction, thereby making the thermal insulation cover plate 30 more stable after assembly.

Further, the first raised plate 323 has an inner edge. The rear shell plate 320 may further include a second raised plate 325, the second raised plate 325 is located at the rear side of the first raised plate 323, the orthographic projection of the second raised plate 325 to the first raised plate 323 is located inside the first raised plate 323, and the outer edge of the second raised plate 325 is connected to the inner edge of the first raised plate 323 through a second connecting plate 326.

The rear wall of the inner liner 12 may further include a third abutting wall 124, which is located at the rear side of the second abutting wall 122, and the outer edge of the third abutting wall 124 is connected to the inner edge of the second abutting wall 122 via a second connecting wall 125. When the shell plate is installed on the rear wall of the inner liner 12, the second connecting plate 326 fits with the second connecting wall 125.

That is to say, the rear shell plate 320 forms a third step using the first protruding plate 323 and the second protruding plate 325, and the rear wall of the inner liner 12 also forms a fourth step using the second abutting wall 122 and the third abutting wall 124. When the insulation cover plate 30 is assembled to the rear wall of the inner liner 12, the third step is connected to the fourth step, which can improve the sealing between the insulation cover plate 30 and the rear wall of the inner liner 12, and further improve the thermal insulation performance of the insulation cover plate 30.

In some embodiments, the periphery of the second connecting plate 326 extends backwards with a plurality of hooks 326a, and a plurality of slots are formed on the third abutting wall 124. When the shell plate is installed on the rear wall of the inner liner 12, the plurality of hooks 326a and the plurality of slots are matched one by one. In the process of installing the heat-insulating cover plate 30, the rear shell of the shell plate is made to face backwards and gradually approach the rear wall of the inner liner 12, so that the second connecting plate 326 is fitted with the second connecting wall 125, the first connecting plate 324 is fitted with the first connecting wall 123, the outer plate 322 is fitted with the first abutting wall 121, the first protruding plate 323 is fitted with the second abutting wall 122, and finally the hooks 326a are matched with the slots to complete the installation.

In addition, since the hook 326a is formed on the periphery of the second connecting plate 326 and the slot is formed on the third abutting wall 124, that is, when the shell plate is installed on the rear wall of the inner liner 12, the hook 326a and the slot are hidden on the rear side of the insulation cover plate 30, which will not affect its aesthetics.

In some embodiments, the third abutting wall 124, the second connecting wall 125 and the second protruding plate 325 together define the evaporator chamber 14. The heat-insulating plate 330 is configured such that its orthographic projection to the rear wall of the inner container 12 completely covers the evaporator chamber 14.

That is to say, the opening of the evaporator chamber 14 can be understood as being defined by the outline of the second connecting wall 125. Since the second connecting wall 125 is in contact with the second connecting plate 326, and the periphery of the second connecting plate 326 also has an outer plate 322 and a first raised plate 323, the thermal insulation plate 330 in the shell can be set to be larger than the opening of the evaporator chamber 14. In this way, the thermal insulation plate 330 completely surrounds the evaporator chamber 14 in the opening direction facing the evaporator chamber 14, thereby further improving the thermal insulation properties of the thermal insulation cover plate 30.

In some specific embodiments, each side edge of the heat insulation board 330 extends at least 10 mm beyond the opening edge of the evaporator chamber 14 .

Referring to Figures 3 to 5, in some embodiments, the rear shell plate 320 may also include a feed portion 340, which is a cover body open to the front and connected to the rear side of the second raised plate 325. An injection port 341a for injecting thermal insulation foam material is provided on the top thereof. The feed portion 340 is configured to guide the thermal insulation foam material injected therein from the injection port 341a to the front side of the second raised plate 325.

Specifically, the feed portion 340 may further include a top plate 341, a rear plate 342, a bottom plate 343, and two side plates 344. The top plate 341 may be formed at the rear edge of the top wall of the second raised plate 325 and extend backward. The rear plate 342 may be formed at the rear edge of the top plate 341 and extend downward, that is, the top plate 341 is parallel to the second raised plate 325. The bottom plate 343 is formed at the lower edge of the rear plate 342, extends forward and is connected to the rear surface of the second raised plate 325. The two side plates 344 are respectively located at the lateral sides of the feed portion 340 to close the side of the feed portion 340.

The feed part 340 is used to introduce the heat insulation foam material into the heat insulation space 302. When the heat insulation foam material is injected into the heat insulation space 302, the liquid heat insulation foam material raw material can be injected into the feed part 340 through the injection port 341a, and the heat insulation foam material raw material is introduced into the heat insulation space 302 along the wall surface of the feed part 340, that is, the gap between the periphery of the heat insulation board 330 and the inner wall of the heat insulation space 302 is filled, and finally after cooling and shaping, the heat insulation cover plate 30 is completed.

Furthermore, the injection port 341 a may be provided with a sealing cover 350 to close the feed portion 340 after the injection is completed.

Furthermore, the bottom plate 343 of the feed part 340 can also be configured as a guide plate extending from back to front and downward, so that when the liquid thermal insulation foaming material raw material is injected into the feed part 340 through the injection port 341a, the guide plate can be used to smoothly guide the thermal insulation foaming material raw material from back to front and downward.

Furthermore, a plurality of guide grooves 328 arranged at intervals in the transverse direction are formed on the front surface of the second raised plate 325 so as to guide the heat insulating foaming material.

Furthermore, a plurality of foaming exhaust holes 327 are provided on the second raised plate 325 to exhaust the air in the heat-insulating space 302. The plurality of foaming exhaust holes 327 can be divided into a plurality of groups and can be arranged at the middle, bottom, and periphery of the rear shell plate 320. The spacing of the foaming exhaust holes 327 in each group can be set at 15 mm to 25 mm.

3 and 4 , in some embodiments, the heat insulating cover plate 30 may further include an external heat insulating layer 360 , and the external heat insulating layer 360 is disposed on the rear side of the shell plate to enhance the heat insulating property of the heat insulating cover plate 30 .

Specifically, the external insulation layer 360 may include an aluminum sheet 362 and a PE aluminum foil insulation material 364, the aluminum sheet 362 may be disposed below the rear shell plate 320, and the PE aluminum foil insulation material 364 is disposed between the aluminum sheet 362 and the rear shell plate 320. The PE aluminum foil insulation material 364 is also called PE aluminum foil insulation foam, which has strong insulation and heat insulation properties, and can improve the insulation performance of the insulation cover plate 30.

At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present application have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present application can still be directly determined or derived from the contents disclosed in the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all such other variations or modifications.

Claims (10)

A refrigerator, characterized in that it comprises an inner container and a heat-insulating cover plate, wherein the inner container is open forward, and the heat-insulating cover plate is arranged inside the inner container to define an evaporator chamber together with a rear wall of the inner container; the heat-insulating cover plate further comprises: a shell plate defining a heat-insulating space therein; A heat-insulating board is arranged in the heat-insulating space, and a gap between the periphery of the heat-insulating board and the inner wall of the heat-insulating space is filled with heat-insulating foaming material. The refrigerator according to claim 1, characterized in that The shell plate comprises a front shell plate and a rear shell plate which are arranged front and back, and the front shell plate and the rear shell plate are buckled together to define the heat insulation space. The refrigerator according to claim 2, characterized in that The rear shell plate further comprises an outer plate and a first protruding plate, the outer plate has an inner edge, the first protruding plate is located at the rear side of the outer plate, the orthographic projection of the first protruding plate to the outer plate is located inside the outer plate, and the outer edge of the first protruding plate is connected to the inner edge of the outer plate via a first connecting plate; The rear wall of the inner container comprises a first abutting wall and a second abutting wall, the first abutting wall has an inner edge, the second abutting wall is located at the rear side of the first abutting wall, and the outer edge of the second abutting wall is connected to the inner edge of the first abutting wall through a first connecting wall; The refrigerator is configured such that when the shell plate is mounted on the rear wall of the inner container, the outer plate fits against the first abutting wall, and the first protruding plate fits against the second abutting wall. The refrigerator according to claim 3, characterized in that The refrigerator is also configured such that when the shell plate is mounted on the rear wall of the inner container, the first connecting plate is in contact with the first connecting wall. The refrigerator according to claim 3, characterized in that The first raised plate has an inner edge; The rear shell plate further includes a second protruding plate, the second protruding plate is located at the rear side of the first protruding plate, the orthographic projection of the second protruding plate to the first protruding plate is located inside the first protruding plate, and the outer edge of the second protruding plate is connected to the inner edge of the first protruding plate through a second connecting plate; The rear wall of the inner container comprises a third abutting wall, the third abutting wall is located at the rear side of the second abutting wall, and the outer edge of the third abutting wall is connected to the inner edge of the second abutting wall through a second connecting wall; The refrigerator is configured such that when the shell plate is mounted on the rear wall of the inner container, the second connecting plate is in contact with the second connecting wall. The refrigerator according to claim 5, characterized in that the rear shell plate further comprises: The feed part is a cover body opened forward, connected to the rear side of the second raised plate, and has an injection port on its top for injecting thermal insulation foam material. The feed part is configured to guide the thermal insulation foam material injected into it from the injection port to the front side of the second raised plate. The refrigerator according to claim 6, characterized in that The feeding portion comprises a rear plate parallel to the second raised plate and a guide plate connected between the second raised plate and the lower edge of the rear plate; The guide plate is arranged to extend from rear to front and downward so as to guide the heat insulating foaming material to the front side of the second raised plate. The refrigerator according to claim 5, characterized in that The third abutment wall, the second connecting wall and the second raised plate together define the evaporator chamber; and The heat insulation board is configured so that its orthographic projection onto the rear wall of the inner container completely covers the evaporator chamber. The refrigerator according to claim 5, characterized in that The front surface of the second raised plate is formed with a plurality of guide grooves arranged at intervals in the transverse direction so as to guide the heat insulating foaming material; and/or, The second raised plate is provided with a plurality of foaming exhaust holes to exhaust the air in the heat-insulating space. The refrigerator according to claim 1, characterized in that the heat insulating cover plate further comprises: The external heat-insulating layer is arranged on the rear side of the shell plate to improve the heat-insulating property of the heat-insulating cover plate.