Refrigeration appliance

Abstract

The embodiment of the invention provides a refrigeration appliance. The refrigeration appliance is provided with an inner container suitable for defining a storage chamber and an air duct assembly suitable for supplying cooling gas into a storage space of the storage chamber through an air duct. The air duct assembly comprises a first cover plate which is arranged at a first wall of the inner container, so that a first section of the air duct is formed between the first wall and the first cover plate; and a second cover plate disposed at a second wall of the liner intersecting the first wall such that a second section of the air duct is formed between the second wall and the second cover plate. The second cover plate is provided with a first air outlet suitable for supplying cooling gas to the storage space of the storage chamber, and the second section communicates with the first section so that the cooling gas can be guided to the first air outlet from the first section. According to some embodiments of the invention, the air outlet position of the air duct can be more flexible.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a refrigeration appliance. Background Art

[0002] Nowadays, with the improvement of people's living standards, refrigeration appliances have entered thousands of households, such as refrigerators, wine cabinets and so on.

[0003] In order to make the storage room of the refrigeration appliance have a lower operating temperature, cooling gas, for example, cooled by an evaporator, may be supplied to the storage room. Generally, an air duct and an air outlet may be provided at the rear wall of the storage room so that the cooling gas is supplied to the storage room via the air outlet. Since the cooling gas is concentrated at the rear wall, this may cause uneven temperature in the storage room. In addition, the air duct and the air outlet may also be provided at the top wall of the storage room. This may cause the structure of the refrigeration appliance to be complicated, and the air duct may occupy space at the top of the storage room. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an improved refrigeration appliance to overcome at least one of the above-mentioned deficiencies in the prior art.

[0005] According to a first aspect of the present application, an embodiment of the present application provides a refrigeration appliance, which is provided with an inner liner suitable for enclosing a storage chamber and an air duct assembly suitable for supplying cooling gas to the storage space of the storage chamber through the air duct. The air duct assembly includes: a first cover plate, which is arranged at a first wall of the inner liner, so that a first section of the air duct is formed between the first wall and the first cover plate; and a second cover plate, which is arranged at a second wall of the inner liner intersecting with the first wall, so that a second section of the air duct is formed between the second wall and the second cover plate. The second cover plate is provided with a first air outlet suitable for supplying cooling gas to the storage space of the storage chamber. The second section is connected to the first section so as to guide the cooling gas from the first section to the first air outlet.

[0006] Thus, the air outlet position of the air duct can be more flexible. This helps to achieve the desired operating temperature in the storage room. For example, the first air outlet can be flexibly arranged independently of other components of the refrigeration appliance (such as evaporator, fan, etc.).

[0007] According to an optional embodiment of the present application, the air duct assembly may further include an insulation board made of insulation material. The insulation board may be arranged on a side of the first cover plate facing away from the storage space, with a first end of the insulation board facing the second wall and abutting against the second wall. With the aid of the insulation board, thermal insulation may be achieved between the storage space and the first section of the air duct, thereby preventing condensation from occurring on a side of the first cover plate facing the storage space.

[0008] According to an optional embodiment of the present application, the heat insulation board may at least partially define the first section and / or the heat insulation board may be provided with a channel suitable for forming the first section. This helps to make the air duct assembly have good thermal insulation and a compact structure.

[0009] According to an optional embodiment of the present application, the air duct assembly may include a rear cover plate located between the first wall and the heat insulation board. The first section may be at least partially located between the heat insulation board and the rear cover plate. The first end may extend to the front of the rear cover plate to form a sealed connection between the front of the rear cover plate and the second wall and / or the first end may extend beyond the rear cover plate in the direction of the second wall. The heat insulation board forms a sealed connection with the second wall through its first end without the need to additionally provide a seal between the first end of the heat insulation board and the second wall. This helps to improve the seal and simplify the assembly process.

[0010] According to an optional embodiment of the present application, the heat insulation board may include a vertical section extending in a vertical direction, and the first end portion may extend forward from an upper end of the vertical section in a horizontal direction and abut against the second wall.

[0011] The first end may in particular be provided with at least one rib protruding from its end base in the direction of the second wall. The at least one rib is pressed against the second wall so as to form a sealed connection between the first end and the second wall. This prevents the cooling gas in the air duct from leaking to both sides. The sealing effect between the first end and the second wall can be effectively enhanced by means of the rib. The at least one rib may, for example, extend in a direction perpendicular to the main plane of the insulation board. The at least one rib may in particular include a first rib and a second rib located on the same side of the air duct, the first rib and the second rib being arranged side by side and spaced apart in a direction parallel to the first wall and the second wall. This is particularly helpful in improving the sealing effect.

[0012] According to an optional embodiment of the present application, the at least one convex rib has a cross-sectional shape that narrows from the end base toward the second wall. This helps to ensure that the convex rib abuts against the second wall in a sealed manner, especially in a sealed manner over the entire extension length. For example, the at least one convex rib may have an arcuate, trapezoidal or triangular cross-sectional shape.

[0013] According to an optional embodiment of the present application, the first end may have a recessed portion that is recessed relative to its end base in a direction away from the second wall, and the first section is connected to the second section via the recessed portion. The recessed portion may form a part of a transition section between the first section and the second section.

[0014] According to an optional embodiment of the present application, the air duct assembly may further include a rear cover plate, which is arranged between the first wall and the heat insulation plate. The rear cover plate and the heat insulation plate may together enclose a transition section of the air duct located between the first section and the second section. For example, on the outside of the transition section, the rear cover plate encloses an arc-shaped outer edge of the transition section. The cooling gas may smoothly change the flow direction in the transition section. Optionally, on the inside of the transition section, the heat insulation plate encloses a straight inner edge of the transition section, and the straight inner edge is inclined in a direction away from the first wall in a direction toward the second cover plate. This is also beneficial for guiding the cooling gas to flow from the first section into the second section. In particular, the straight inner edge cooperates with the arc-shaped outer edge to form an enlarged flow cross section in the transition section.

[0015] According to an optional embodiment of the present application, a second inclined section may be provided at the rear end of the second cover plate, wherein the second inclined section includes an inclined surface facing the storage space, and the second inclined section can shield the portion where the second cover plate and the first cover plate are adjacent to each other.

[0016] According to an optional embodiment of the present application, the first cover plate is provided with a first inclined section at one end thereof adjacent to the second cover plate, and the first inclined section is inclined in a direction away from the first wall in a direction toward the second cover plate. The second inclined section may be particularly parallel to the first inclined section. The first inclined section and the second inclined section may overlap each other. Optionally, the first inclined section may extend over the entire width or nearly the entire width of the first cover plate. Alternatively or additionally, the second inclined section extends over the entire width or nearly the entire width of the second cover plate. With the aid of the first inclined section and the second inclined section, the first cover plate can be reliably connected to the second cover plate.

[0017] According to an optional embodiment of the present application, the air duct assembly includes a sealing sheet forming a sealed connection between the first inclined section and the second inclined section. The sealing sheet can be clamped between the first inclined section and the second inclined section, thereby ensuring that the first inclined section is sealedly connected to the second inclined section. At least one of the first inclined section and the second inclined section may be provided with a sealing recess suitable for accommodating the sealing sheet on a side facing the other. This helps to ensure the reliability of the sealing effect of the sealing sheet.

[0018] According to an optional embodiment of the present application, the first cover plate may be provided with a receiving portion, the second cover plate may be provided with an embedding portion suitable for embedding in the receiving portion, and the first cover plate and the second cover plate are connected to each other via the receiving portion and the embedding portion. Thus, the second cover plate can be installed to the first cover plate in a convenient manner.

[0019] Optionally, the inner contour of the receiving portion and / or the outer contour of the embedding portion is formed to be narrowed toward the first wall, thereby facilitating the installation operation of the operator and providing a reliable connection.

[0020] For example, the dimensions of the inner contour of the receiving portion and / or the outer contour of the embedding portion in a direction perpendicular to the second wall are formed to become smaller toward the first wall, thereby facilitating the installation of the second cover plate.

[0021] According to an optional embodiment of the present application, the inner contour of the accommodating portion and / or the outer contour of the embedding portion is inclined toward the second wall in the direction toward the first wall at a side away from the second wall, thereby reducing friction between the second cover plate and the second wall of the inner container during installation.

[0022] According to an optional embodiment of the present application, the second cover plate may be provided with a first rib and a second rib on a side facing away from the storage chamber, and the first rib and the second rib respectively bound the second section of the air duct from opposite sides. For example, the first rib and the second rib extend away from each other at least sectionally in the main flow direction of the second section of the air duct, so that the second section may have an increased width.

[0023] According to an optional embodiment of the present application, the air duct assembly may include a sealing strip arranged on the first convex rib and / or the second convex rib, wherein the sealing strip is pressed against the second wall. By means of the sealing strip, a sealed connection may be formed between the second cover plate and the second wall, thereby preventing leakage of cooling gas in the second section.

[0024] According to an optional embodiment of the present application, the refrigeration appliance may further include a heating device arranged between the second cover plate and the second wall. The second cover plate may be formed with a fixing structure suitable for fixing the heating device on a side facing away from the storage chamber. The heating device may include a heat conducting plate fixed to the second cover plate and a heating component fixed to the heat conducting plate. In this way, the heating device can be conveniently and reliably fixed to the second cover plate. During the assembly process, no additional tools or components are required. During use, the stability of the structure can be maintained.

[0025] According to an optional embodiment of the present application, the fixing structure may include a fixing hook. The fixing hook may be formed in a U shape and include a fixing leg extending from a cover plate base of the second cover plate and a free leg spaced apart from the cover plate base, wherein a gap between the cover plate base and the free leg allows the heat conducting plate to be inserted.

[0026] Alternatively or additionally, the fixing structure may include a fixing protrusion, which is formed on a rib of the second cover plate that protrudes from the cover plate base toward the second wall and protrudes in a direction parallel to the second wall relative to the rib, and the fixing protrusion cooperates with the edge of the heat conducting plate to limit the movement of the heat conducting plate toward the second wall and / or limit the movement of the heat conducting plate in the extension direction of the rib. With the aid of the above fixing structure, the heating device can be reliably fixed to the second cover plate in a convenient manner without the need for additional tools or components. It is particularly advantageous that the combination of the fixing hook and the fixing protrusion can enhance the reliability of the fixing structure without complicating the installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present invention can be better understood. The accompanying drawings include:

[0028] Figure 1 Schematically shows a refrigeration appliance according to an exemplary embodiment of the present application;

[0029] Figure 2 A storage compartment of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in a cross-sectional view;

[0030] Figure 3 The air duct assembly of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in an exploded view;

[0031] Figure 4 Schematically shows the Figure 2 A partial cross-sectional view along section line AA is shown;

[0032] Figure 5 The air duct assembly of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in an exploded view;

[0033] Figure 6 Schematically shows an air duct assembly of a refrigeration appliance according to an exemplary embodiment of the present invention;

[0034] Figure 7 Schematically shows Figure 6 An enlarged view of part B in FIG.

[0035] Figure 8 Schematically shows Figure 6 An enlarged view of section C in FIG. 1 ; and

[0036] Fig. 9 Schematically shows Figure 6 Magnified view of section D in FIG.

[0037] Reference numerals list

[0038] 1 Liner

[0039] 10. Storage Room

[0040] 100 Storage Space

[0041] 11 First Wall

[0042] 12 Second Wall

[0043] 2 Air duct components

[0044] 20 Air duct

[0045] 201 First Segment

[0046] 202 Second Section

[0047] 203 Transition Section

[0048] 21 First cover

[0049] 211 First inclined section

[0050] 212 Seal recess

[0051] 213 Accommodation

[0052] 2131 Upper limit piece

[0053] 2132 Lower limit piece

[0054] 22 Second cover

[0055] 220 Cover plate substrate

[0056] 221 First air outlet

[0057] 222 Second inclined section

[0058] 2221 Inclined Surface

[0059] 223 Embedded

[0060] 225 First rib

[0061] 226 Second rib

[0062] 227 Fixed structure

[0063] 2271 Fixed Hook

[0064] 2272 Fixed protrusion

[0065] 23 Insulation board

[0066] 230 Slot

[0067] 231 vertical segment

[0068] 232 First end

[0069] 233 End base

[0070] 234 ribs

[0071] 235 First rib

[0072] 236 Second rib

[0073] 237 recess

[0074] 24 Rear cover

[0075] 25 Sealing sheet

[0076] 26 Sealing strip

[0077] 27 Heating device

[0078] 271 Heat conducting plate

[0079] 272 Heating element

[0080] 3 Evaporator

[0081] 4 Fan DETAILED DESCRIPTION

[0082] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the scope of protection of the present application.

[0083] First, for ease of understanding, let's go back to the description in the background technology section. The refrigeration appliances in the prior art have problems such as uneven temperature, complex structure, and reduced storage space height.

[0084] In view of at least one of the above technical problems or other possible technical problems, an exemplary embodiment of the present application provides a refrigeration appliance, which is provided with an inner tank suitable for enclosing a storage chamber and an air duct assembly suitable for supplying cooling gas to the storage space of the storage chamber through the air duct. The air duct assembly includes: a first cover plate, which is arranged at the first wall of the inner tank, so that the first section of the air duct is formed between the first wall and the first cover plate; and a second cover plate, which is arranged at the second wall of the inner tank intersecting with the first wall, so that the second section of the air duct is formed between the second wall and the second cover plate. The second cover plate is provided with a first air outlet suitable for supplying cooling gas to the storage space of the storage chamber, and the second section is connected to the first section so as to guide the cooling gas from the first section to the first air outlet.

[0085] In order to better understand the present application, exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0086] Before starting the detailed description, it should be pointed out that the directional terms used in the description process refer to the normal use state of the refrigeration appliance for the convenience of description and should not be understood as an absolute limitation on the corresponding features. In some drawings, arrows are schematically shown to indicate the height direction H, the width direction W and the depth direction D that are perpendicular to each other.

[0087] Figure 1 A refrigeration appliance according to an exemplary embodiment of the present application is schematically shown.

[0088] from Figure 1 As can be seen from the figure, the refrigeration appliance is provided with an inner tank 1 for enclosing a storage chamber 10 and an air duct assembly 2 for supplying cooling gas to a storage space 100 of the storage chamber 10 through an air duct 20. The storage chamber 10 can be used as a cold storage chamber, for example, and items to be cooled can be stored in the storage space 100. Figure 1 It can also be seen that the refrigeration appliance may further include a freezer compartment located on one side of the refrigeration compartment and another refrigeration compartment located above the refrigeration compartment. Figure 1 Those skilled in the art will appreciate that the storage chamber 10 can also be used as a freezer. Figure 1 , the door for closing the storage chamber 10 is opened, so that the opening of the storage chamber 10 is open, and the user can take in and out the items in the storage chamber 10 through the open opening.

[0089] In this embodiment, the refrigeration appliance may be implemented as a combined refrigerator with a refrigerating chamber and a freezing chamber, for example. Those skilled in the art will appreciate that the present invention is also applicable to other types of refrigerators, such as a separate refrigerator or freezer. In addition, as required, the present invention may also be applied to other refrigeration appliances other than refrigerators, such as a wine cabinet. The present invention is particularly applicable to household refrigeration appliances.

[0090] Figure 2 The storage chamber 10 of the refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in a cross-sectional view. Figure 2 As shown, the storage chamber 10 is surrounded by the inner liner 1. An air duct assembly 2 for supplying cooling air to a storage space 100 of the storage chamber 10 through an air duct 20 is arranged in the inner liner 1. The storage space 100 may be bounded by the inner liner 1 and the air duct 20.

[0091] Combination Figure 1 and Figure 2It can be seen that the air duct assembly 2 includes a first cover plate 21 and a second cover plate 22. The first cover plate 21 is arranged at the first wall 11 of the inner liner 1, so that the first section 201 of the air duct 20 is formed between the first wall 11 and the first cover plate 21. The second cover plate 22 is arranged at the second wall 12 of the inner liner 1 intersecting with the first wall 11, so that the second section 202 of the air duct 20 is formed between the second wall 12 and the second cover plate 22. The second cover plate 22 is provided with a first air outlet 221 suitable for supplying cooling gas to the storage space 100 of the storage chamber 10, and the second section 202 is connected to the first section 201 so as to guide the cooling gas from the first section 201 to the first air outlet 221.

[0092] As a result, the air outlet position of the air duct 20 can be more flexible. This helps to achieve the desired operating temperature in the storage chamber 10. For example, in this embodiment, the first cover plate 21 is arranged at the rear wall of the inner liner 1, and the second cover plate 22 is arranged at the top wall of the inner liner 1. This allows the first air outlet 221 to discharge air downward above the storage space 100, thereby helping to make the temperature in the storage chamber 10 more uniform. The first air outlet 221 can be particularly arranged at the opening adjacent to the inner liner 1, which is particularly conducive to making the temperature in the storage chamber 10 uniform. The first air outlet 221 can be flexibly arranged to a large extent independently of other components of the refrigeration appliance.

[0093] For example, the refrigeration appliance may include an evaporator 3 for cooling the storage chamber 10, which may be arranged in the storage chamber 10, for example, in the first section 201 or upstream of the first section 201. Figure 2 As shown, the evaporator 3 can be arranged between the rear wall of the inner liner 1 and the air duct assembly, so as to be shielded by the air duct assembly. The depth of the refrigeration appliance is relatively large, and arranging the evaporator 3 at the back of the storage chamber 10 helps to avoid the storage space 100 that is convenient for users to use. Usually, in this case, the air outlet of the storage chamber 10 is arranged on the first cover plate 21 located at the rear wall of the inner liner 1. However, in Figure 2 In the illustrated embodiment, the gas cooled by the evaporator 3 can flow upward in the first section 201 to the second section 202, and flow forward in the second section 202, and then leave the air duct 20 through the first air outlet 221 to enter the storage space 100. It can be seen that this layout of the air duct assembly 2 allows the air outlet position of the air outlet duct 20 to be largely independent of the position of the evaporator 3. This allows the evaporator 3 and the air outlet position to be respectively set at optimized positions. For example, the evaporator 3 can be arranged closer to the compressor, thereby shortening the pipeline length and simplifying the refrigeration circuit structure. The air outlet position can be set at a position that is more conducive to meeting the temperature requirements in the storage room 10.

[0094] Optionally, the refrigeration appliance may include a fan 4 arranged in the first section 201 of the air duct 20 to pressurize the cooling gas. The fan 4 may be configured as a centrifugal fan, for example. Figure 2 As shown, the fan 4 can be arranged downstream of the evaporator 3, and can draw the gas cooled by the evaporator 3 upward, and then blow the cooled gas into the second section 202. Components such as the fan 4 and / or the evaporator 3 need to occupy a large space. In order to avoid occupying the storage space 100 that is convenient for users to use, the fan 4 and / or the evaporator 3 can be arranged at the back of the storage chamber 10, for example, between the first cover plate 21 and the rear wall of the liner 1. However, the first air outlet 221 does not have to be restricted by the position of the fan 4 and the evaporator 3 and arranged at the back of the storage chamber 10. As shown in FIG. Figure 2 As shown, the second cover plate 22 can be arranged at the top wall of the inner tank 1, and the first air outlet 221 is correspondingly located at the top of the storage chamber 10. The (average) distance between the second cover plate 22 and the top wall of the inner tank 1 can be significantly smaller than the (average) distance between the first cover plate 21 and the rear wall of the inner tank 1. Therefore, the space occupied by the air duct assembly 2 in the height direction H can be reduced.

[0095] In an exemplary embodiment according to the present invention, the first cover plate 21 may be provided with another air outlet, so that the cooling air in the first section 201 can be supplied to the storage space 100 via the other air outlet. Thus, for example, a combination of back air outlet and top air outlet can be achieved in the storage room 10.

[0096] See also Figure 2 , the first section 201 may be at least partially located within the air duct assembly 2 . Alternatively or additionally, the first section 201 may be at least partially defined by the first wall 11 .

[0097] Figure 3 An air duct assembly 2 of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in an exploded view.

[0098] Combination Figure 2 and Figure 3 It can be seen that the air duct assembly 2 may further include an insulation board 23 made of an insulation material. The insulation board 23 may be arranged on the side of the first cover plate 21 facing away from the storage space 100. The first end 232 of the insulation board 23 may face the second wall 12 and abut against the second wall 12. With the aid of the insulation board 23, thermal insulation may be achieved between the storage space 100 and the first section 201 of the air duct 20, thereby preventing condensation from occurring at the side of the first cover plate 21 facing the storage space 100. The first section 201 is located at an upstream position in the air duct 20, and the temperature in the first section 201 is generally significantly lower than the temperature in the storage space 100. It is particularly advantageous to provide the insulation board 23 here.

[0099] like Figure 2As shown, the heat shield 23 may at least partially bound the first section 201, for example, bound at least a portion of the first section 201 at the front. Figure 3 As shown, the heat insulation board 23 may be provided with a channel 230 suitable for forming the first section 201. This helps to make the air duct assembly 2 have good heat insulation and a compact structure.

[0100] Optionally, such a heat insulation plate 23 is not provided between the second cover plate 22 and the second wall 12 of the liner 1, so that the distance between the second cover plate 22 and the second wall 12 can be reduced. That is, the space occupied by the air duct assembly 2 in the storage chamber 10 can be reduced, and in particular, the space occupied by the air duct assembly 2 in the height direction H can be reduced. Since the second section 202 is located in the downstream position in the air duct 20, the temperature in the second section 202 is usually higher than the temperature in the first section 201. At the same time, the first air outlet 221 is provided in the second cover plate 22, and the temperature in the storage space 100 adjacent to the second cover plate 22 is relatively close to the first air outlet 221. Therefore, the temperature difference between the two sides of the second cover plate 22 is relatively small, so that the probability of condensation occurring on the side of the second cover plate 22 facing the storage space 100 is low. It is particularly advantageous that the second cover plate 22 is located at the top wall of the inner tank 1 , and by reducing the distance between the second cover plate 22 and the top wall of the inner tank 1 , the air duct assembly 2 can be prevented from reducing the height dimension of the storage space 100 as much as possible.

[0101] Figure 3 It is also shown that the second cover plate 22 may be provided with a first convex rib 225 and a second convex rib 226 on the side facing away from the storage chamber 10. The first convex rib 225 and the second convex rib 226 may respectively bound the second section 202 of the air duct 20 from opposite sides. The second cover plate 22 may directly bound the second section 202. Optionally, the first convex rib 225 and the second convex rib 226 may extend away from each other at least sectionally in the main flow direction of the second section 202 of the air duct 20. Thus, the second section 202 may have an increased width. Furthermore, the widened second section 202 may guide the cooling gas to the longer first air outlet 221 and flow into the storage space. This helps to form a wind curtain for the cooling gas flowing out of the first air outlet 221. For example, Figure 1 As shown, the first air outlet 221 may be disposed adjacent to the top of the storage chamber 10 , extending substantially over the entire width of the storage chamber 10 .

[0102] Combination Figure 2 and Figure 3 It can be seen that the air duct assembly 2 may further include a rear cover plate 24 located between the first wall 11 and the heat insulation plate 23. The first section 201 may be at least partially located between the heat insulation plate 23 and the rear cover plate 24.

[0103] For example, a wind pressure cavity may be formed between the rear cover plate 24 and the heat insulation plate 23, and the fan 4 may be arranged in the wind pressure cavity. The wind pressure cavity may have, for example, a volute-shaped circumferential profile so that the cooling gas has a higher flow rate. The first cover plate 21 may be provided with a mounting structure for the fan 4 on the side facing the first wall 11, and the mounting structure passes through the heat insulation plate 23 so that the fan 4 can be fixed to the first cover plate 21.

[0104] The first end 232 of the heat insulating portion 23 may extend to the front of the rear cover plate 24 to form a sealed connection between the front of the rear cover plate 24 and the second wall 12. The first end 232 may extend beyond the rear cover plate 24 in the direction of the second wall 12. The heat insulating plate 23 forms a sealed connection with the second wall 12 through its first end 232, without the need to additionally provide a seal between the first end 232 of the heat insulating plate 23 and the second wall 12. This helps to improve the seal and simplify the assembly process. For example, if the sealed connection between the heat insulating plate 23 and the second wall 12 is achieved by means of an additional seal, it is necessary to arrange the seal during the assembly process of installing the air duct assembly 2 to the liner 1. However, in this assembly process, the available assembly space and assembly direction of the air duct assembly 2 are usually limited. Therefore, arranging the seal here will greatly increase the difficulty of assembly. If the seal is not arranged in the desired position or is displaced during the assembly process, it is likely to reduce the sealing effect. In addition, other components adjacent to the first end 232, such as the rear cover plate 24 and / or the second cover plate 22, etc., need to form a sealed connection with the second wall 12 of the inner liner 1. If these components are connected to the second wall 12 through additional seals, such as sealing strips, it is difficult for the seal between the first end 232 of the heat insulation plate 23 and the second wall 12 of the inner liner 1 and the seal between the rear plate and / or the second cover plate 22 and the second wall 12 of the inner liner 1 to form a good connection, and the cooling gas may leak due to mutual squeezing.

[0105] like Figure 3 As shown, the heat insulation board 23 may include a vertical section 231 extending in the vertical direction. The first end portion 232 may extend forward from the upper end of the vertical section 231 in the horizontal direction and abut against the second wall 12.

[0106] Figure 4 Schematically shows the Figure 2 A partial cross-sectional view along section line AA is shown.

[0107] Combination Figure 3 and Figure 4It can be seen that the first end portion 232 may be provided with at least one convex rib 234 protruding from its end base surface 233 toward the second wall 12. The at least one convex rib 234 is pressed against the second wall 12 to form a sealed connection between the first end portion 232 and the second wall 12. Thus, the cooling gas in the air duct 20 can be prevented from leaking to both sides. Compared with the first end portion 232 directly abutting against the second wall 12 with the end base surface 233, the sealing effect between the first end portion 232 and the second wall 12 can be effectively enhanced by means of the convex rib 234.

[0108] The at least one rib 234 may extend in a direction perpendicular to the main plane of the heat insulation board 23. Figure 3 In the illustrated embodiment, the main plane of the heat insulation board 23 is parallel to the first wall 11 (ie, the rear wall) of the inner container 1 , and the ribs 234 extend along the depth direction D. The extending direction of the ribs 234 is substantially consistent with the extending direction of the second section 202 .

[0109] In particular, the at least one rib 234 may include a first rib 235 and a second rib 234 located on the same side of the air duct 20. The first rib 235 and the second rib 236 are arranged side by side and spaced apart in a direction parallel to the first wall 11 and the second wall 12 (here, the width direction W). This is particularly helpful in improving the sealing effect. It should be understood that compared with the embodiment in which only one rib 234 abuts against the second wall 12, this structure does not simply improve the sealing effect by increasing the number of ribs 234. Instead, a narrow gap may be formed between the first rib 235 and the second rib 236, so that even if the first rib 235 and the second rib 236 are not in complete sealing contact with the inner liner 1, the possible leakage path can be made longer and more tortuous. Figure 3 As shown, on both sides of the air duct 20, the first end 232 of the heat insulation board 23 is respectively provided with two convex ribs 234. The two convex ribs 234 are arranged side by side and spaced apart in the width direction W. Optionally, the at least one convex rib 234 may further include more convex ribs 234 located on the same side of the air duct 20 as the first convex rib 235 and the second convex rib 236.

[0110] For example, Figure 4 As shown, the at least one rib 234 may have a cross-sectional shape that narrows from the end base surface 233 toward the second wall 12. This helps ensure that the rib 234 abuts against the second wall 12 in a sealed manner, especially over the entire extended length. When abutting against the second wall 12, the rib 234 can be squeezed and elastically deformed, thereby helping to ensure a sealing effect. The at least one rib 234 may have, for example, an arcuate, trapezoidal or triangular cross-sectional shape.

[0111] like Figure 3 and Figure 4 As shown, the first end portion 232 may have, for example, a recessed portion 237 that is recessed relative to its end base surface 233 in a direction away from the second wall 12. The first section 201 may be connected to the second section 202 via the recessed portion 237. The recessed portion 237 may form a portion of a transition section 203 between the first section 201 and the second section 202.

[0112] See also Figure 2 , the rear cover plate 24 of the air duct assembly 2 can enclose the transition section 203 of the air duct 20 between the first section 201 and the second section 202 together with the heat insulation plate 23. For example, on the outside of the transition section 203, the rear cover plate 24 can enclose the arc-shaped outer edge of the transition section 203. This helps to guide the cooling gas to flow from the first section 201 into the second section 202. The cooling gas can change the flow direction smoothly in the transition section 203. For example, on the inside of the transition section 203, the heat insulation plate 23 can enclose the straight inner edge of the transition section 203. The straight inner edge can be inclined in the direction away from the first wall 11 in the direction toward the second cover plate 22. This is also beneficial for guiding the cooling gas to flow from the first section 201 into the second section 202. In particular, the straight inner edge cooperates with the arc-shaped outer edge to form an enlarged flow cross section in the transition section 203. Here, “inside” and “outside” are based on the center of the storage room 10 , that is, the side toward the center of the storage room 10 is the inside, and the side away from the center of the storage room 10 is the outside.

[0113] Figure 5 An air duct assembly 2 of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown in an exploded view.

[0114] See also Figure 2 and Figure 5, the rear end of the second cover plate 22 may be provided with a second inclined section 222, and the second inclined section 222 includes an inclined surface 2221 facing the storage space 100. The second inclined section 222 can cover the portion where the first cover plate 21 and the second cover plate 22 are adjacent to each other. In some embodiments, the second inclined section 222 helps to form an inclined transition section 203. The first cover plate 21 may be provided with a first inclined section 211 at one end thereof adjacent to the second cover plate 22, and the first inclined section 211 is inclined in a direction away from the first wall 11 in a direction toward the second cover plate 22. The second inclined section 222 may be particularly parallel to the first inclined section 211. In the assembled state, the first inclined section 211 may overlap with the second inclined section 222. With the help of the first inclined section 211 and the second inclined section 222, the first cover plate 21 can be reliably connected to the second cover plate 22. The first inclined section 211 may, for example, extend over the entire width or nearly the entire width of the first cover plate 21. Alternatively or additionally, the second oblique section 222 extends over the entire width or nearly the entire width of the second cover plate 22. “Close to the entire width” means at least 80%, in particular at least 90% of the entire width.

[0115] like Figure 5 As shown, the air duct assembly 2 may include a sealing sheet 25 that forms a sealed connection between the first inclined section 211 and the second inclined section 222. The sealing sheet 25 may be clamped between the first inclined section 211 and the second inclined section 222, thereby ensuring a sealed connection between the first inclined section 211 and the second inclined section 222. The sealing sheet 25 is formed, for example, in a U-shape, thereby surrounding the transition section 203 of the air duct 20. Optionally, at least one of the first inclined section 211 and the second inclined section 222 is provided with a sealing recess 212 suitable for accommodating the sealing sheet 25 on a side facing the other. This helps to ensure the reliability of the sealing effect of the sealing sheet 25.

[0116] Figure 6 An air duct assembly 2 of a refrigeration appliance according to an exemplary embodiment of the present invention is schematically shown, wherein the air duct assembly 2 is shown in an assembled state. Figure 7 Schematically shows Figure 6 Magnified view of part B in FIG.

[0117] like Figure 6 As shown, the first cover plate 21 may be provided with a receiving portion 213. The second cover plate 22 may be correspondingly provided with an embedding portion 223 adapted to be embedded in the receiving portion 213. The first cover plate 21 and the second cover plate 22 are connected to each other through the receiving portion 213 and the embedding portion 223. Thus, the second cover plate 22 can be installed to the first cover plate 21 in a convenient manner. For example, the embedding portion 223 may be formed on a side of the second inclined section 222 facing the first wall 11. Figure 7As shown, the embedded portion 223 may protrude backward from the rear side of the second inclined section 222 and have a substantially C-shaped profile. The accommodating portion 213 may be formed on both sides of the first inclined section 211. The accommodating portion 213 may include, for example, an upper stopper 2131 for stopping the embedded portion 223 in a direction toward the second wall 12 and a lower stopper 2132 for stopping the embedded portion 223 in a direction away from the second wall 12.

[0118] For example, during the assembly process, the first cover plate 21 may be first installed to the inner container 1, and then the second cover plate 22 may be installed to the first cover plate 21. Optionally, the connection between the second cover plate 22 and the inner container 1 may be achieved during the process of the second cover plate 22 being installed backwards to the first cover plate 21. For example, the second cover plate 22 may be plugged backwards to the first cover plate 21, and installed upwards to the top wall of the inner container 1. During the process of installing the second cover plate 22, the connection structure between the second cover plate 22 and the first cover plate 21 and / or the inner container 1 is often invisible to the operator.

[0119] The inner contour of the receiving portion 213 and / or the outer contour of the embedded portion 223 can be formed to be narrowed in the direction of the first wall 11. This helps to guide the operator's installation operation and provide a reliable connection. During the installation of the second cover plate 22 to the first cover plate 21, the embedded portion 223 enters the receiving portion 213, and the connection between the embedded portion 223 and the receiving portion 213 becomes tighter and tighter until the second cover plate 22 is installed in place, for example, until the second inclined section 222 is abutted against the first inclined section 211.

[0120] Optionally, the inner contour of the accommodating portion 213 and / or the outer contour of the embedded portion 223 in the direction perpendicular to the second wall 12 is formed to be smaller in the direction of the first wall 11. For example, the inner contour of the accommodating portion 213 and the outer contour of the embedded portion 223 in the height direction H gradually decrease in the backward direction. During the installation process of the second cover plate 22, when the embedded portion 223 is partially located in the accommodating portion 213, the second cover plate 22 can be pre-positioned, and the second cover plate 22 is allowed to rotate a certain angle around an axis parallel to the width direction W. Through this rotation, the installation position of the second cover plate 22 can be adjusted, which is also conducive to installing the second cover plate 22 to the second wall 12 of the liner 1. Thereby, the installation of the second cover plate 22 can be facilitated. Alternatively or additionally, the inner contour of the accommodating portion 213 and / or the outer contour of the embedded portion 223 in the direction parallel to the second wall 12 can also be formed to be smaller in the direction of the first wall 11.

[0121] Alternatively or additionally, the inner contour of the receiving portion 213 and / or the outer contour of the embedding portion 223 may be inclined toward the second wall 12 in the direction toward the first wall 11 at the side away from the second wall 12. In this way, the friction between the second cover plate 22 and the second wall 12 of the inner container 1 can be reduced during the installation process. Figure 7 As shown, the lower limiting piece 2132 of the accommodating portion 213 away from the second wall 12 is inclined toward the second wall 12 in the direction toward the first wall 11, and the lower side profile of the embedded portion 223 is also inclined accordingly. The inclined lower limiting piece 2132 enables the embedded portion 223 to shift upward in the process of entering the accommodating portion 213. In other words, before being installed in place, the second cover plate 22 does not need to move in the direction of the first cover plate 21 close to the second wall 12 of the inner liner 1, thereby reducing the friction between the second cover plate 22 and the second wall 12. This is particularly advantageous when a sealing strip 26 or other components are provided between the second cover plate 22 and the second wall 12. This is because the sealing strip 26 or other components can be prevented from being squeezed, shifted, etc. during the installation process of the second cover plate 22.

[0122] like Figure 6 As shown, the air duct assembly 2 may include a sealing strip 26 arranged on the first convex rib 225 and / or the second convex rib 226, and the sealing strip 26 is pressed on the second wall 12, see Figure 6 By means of the sealing strip 26, a sealed connection can be formed between the second cover plate 22 and the second wall 12, thereby preventing leakage of cooling gas in the second section 202. The sealing strip 26 can extend in particular to abut against the at least one rib 234 of the first end 232 of the heat shield 23.

[0123] Figure 6 It is also shown that the refrigeration appliance may include a heating device 27 arranged between the second cover plate 22 and the second wall 12. The heating device 27 can be used, for example, to increase the temperature in the storage chamber 10 to ensure the normal operation of the refrigeration circuit of the refrigeration appliance. The heating device 27 can also be used, for example, for defrosting and other functions.

[0124] The second cover plate 22 may be formed with a fixing structure 227 for fixing the heating device 27 on a side facing away from the storage chamber 10. The heating device 27 may include a heat conducting plate 271 fixed to the second cover plate 22 and a heating component 272 fixed to the heat conducting plate 271. The heat conducting plate 271 may be arranged between the heating component 272 and the second cover plate 22. The heat conducting plate 271 may be made of aluminum, for example. In particular, compared with fixing the heating device 27 with tape or adhesive, the heating device 27 can be conveniently and reliably fixed to the second cover plate 22 by the fixing structure 227. During the assembly process, no additional tools or components are required. During use, the stability of the structure can be maintained.

[0125] Figure 8 and Fig. 9 Schematically shows Figure 6 Magnified views of parts C and D in FIG.

[0126] like Figure 8As shown, the fixing structure 227 may include a fixing hook 2271. The fixing hook 2271 is formed in a U shape and includes a fixing leg extending from the cover base 220 of the second cover 22 and a free leg spaced apart from the cover base 220. The gap between the cover base 220 and the free leg allows the heat conducting plate 271 to be inserted. For example, the heat conducting plate 271 may be mounted to the second cover 22 from top to bottom so that the fixing hook 2271 passes through the mounting opening formed in the heat conducting plate 271. Then the heat conducting plate 271 may be displaced in a direction parallel to the second cover 22 so that the heat conducting plate 271 is inserted into the gap between the cover base 220 and the free leg. Thus, the fixing hook 2271 can hook the heat conducting plate 271. Optionally, in the process of the heat conducting plate 271 being mounted to the second cover 22 from top to bottom, the fixing hook 2271 may also pass through the mounting opening formed in the heat conducting plate 271 by means of elastic deformation. In another embodiment, it is also feasible that the fixing hook 2271 does not pass through the installation opening formed in the heat conducting plate 271 , but hooks the edge of the heat conducting plate 271 .

[0127] like Fig. 9 As shown, the fixing structure 227 may include a fixing protrusion 2272. The fixing protrusion 2272 is formed on a rib of the second cover plate 22 that protrudes from the cover plate base 220 toward the second wall 12 and protrudes relative to the rib in a direction parallel to the second wall 12. Figure 6 The fixing protrusion 2272 may be formed in particular on the first protruding rib 225 and / or the second protruding rib 226 for delimiting the second section 202 of the air duct 20. The heat conducting plate 271 may extend from the first protruding rib 225 to the second protruding rib 226, for example.

[0128] The fixing protrusion 2272 can cooperate with the edge of the heat conducting plate 271 to limit the movement of the heat conducting plate 271 in the direction of the second wall 12 and / or limit the movement of the heat conducting plate 271 in the extension direction of the rib. For example, the edge of the heat conducting plate 271 can be provided with a recess, so that the fixing protrusion 2272 can be locked into the recess, thereby limiting the heat conducting plate 271 in the forward, backward and upward directions. In the process of installing the heat conducting plate 271 from top to bottom to the second cover plate 22, the fixing protrusion 2272 and the heat conducting plate 271 can be matched by means of the elastic deformation of the heat conducting plate 271 and / or the fixing protrusion 2272, without the need for additional operations or tools. It is particularly advantageous that the reliability of the fixing structure 227 can be enhanced by the combination of the fixing hook 2271 and the fixing protrusion 2272, while the installation operation will not be complicated.

[0129] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative, not restrictive, unless otherwise stated. In specific implementations, multiple features may be combined with each other, depending on actual needs, where technically feasible. In particular, the features in different embodiments may also be combined with each other. Various replacements, changes, and modifications may also be conceived without departing from the spirit and scope of the present application.

Claims

1. A refrigeration appliance, comprising an inner container (1) adapted to enclose a storage chamber (10) and an air duct assembly (2) adapted to supply cooling gas to a storage space (100) of the storage chamber (10) through an air duct (20), characterized in that: The air duct assembly (2) comprises: A first cover plate (21) arranged at the first wall (11) of the inner container (1) such that a first section (201) of the air duct (20) is formed between the first wall (11) and the first cover plate (21); and A second cover plate (22) is arranged at a second wall (12) of the inner tank (1) intersecting with the first wall (11), so that a second section (202) of the air duct (20) is formed between the second wall (12) and the second cover plate (22), wherein the second cover plate (22) is provided with a first air outlet (221) suitable for supplying cooling gas to the storage space (100) of the storage chamber (10), and the second section (202) is connected to the first section (201) so as to guide the cooling gas from the first section (201) to the first air outlet (221).

2. The refrigeration appliance according to claim 1, characterized in that: The air duct assembly (2) also includes a heat insulation board (23) made of a heat insulation material, the heat insulation board (23) is arranged on a side of the first cover plate (21) facing away from the storage space (100), and the first end (232) of the heat insulation board (23) faces the second wall (12) and abuts against the second wall (12).

3. The refrigeration appliance according to claim 2, characterized in that: The heat shield (23) at least partially delimits the first section (201) and / or the heat shield (23) is provided with a channel (230) suitable for forming the first section (201).

4. The refrigeration appliance according to claim 2 or 3, characterized in that: The air duct assembly comprises a rear cover plate (24) located between the first wall (11) and the heat insulation plate (23), the first section (201) is at least partially located between the heat insulation plate (23) and the rear cover plate (24), the first end portion (232) extends to the front of the rear cover plate (24) to form a sealed connection between the front of the rear cover plate (24) and the second wall (12) and / or the first end portion (232) extends beyond the rear cover plate (24) in the direction of the second wall (12).

5. The refrigeration appliance according to any one of claims 2 to 4, characterized in that: The heat insulation board (23) comprises a vertical section (231) extending in a vertical direction, the first end portion (232) extending forward from the upper end of the vertical section (231) in a horizontal direction and resting against the second wall (12); and / or the first end portion (232) is provided with at least one convex rib (234) protruding from its end base surface (233) in the direction of the second wall (12), the at least one convex rib (234) pressing on the second wall (12) so as to form a sealed connection between the first end portion (232) and the second wall (12).

6. The refrigeration appliance according to claim 5, characterized in that: The at least one rib (234) extends in a direction perpendicular to the main plane of the insulation board (23); and / or The at least one convex rib (234) comprises a first convex rib (235) and a second convex rib (236) located on the same side of the air duct (20), the first convex rib (235) and the second convex rib (236) being arranged side by side and spaced apart in a direction parallel to the first wall (11) and the second wall (12).

7. The refrigeration appliance according to claim 5 or 6, characterized in that: The at least one convex rib (234) has a cross-sectional shape that narrows from the end base surface (233) toward the second wall (12); and / or The at least one rib (234) has an arcuate, trapezoidal or triangular cross-sectional shape.

8. The refrigeration appliance according to any one of claims 2 to 7, characterized in that: The first end portion (232) has a recessed portion (237) that is recessed relative to its end base surface (233) in a direction away from the second wall (12), and the first section (201) is connected to the second section (202) via the recessed portion (237).

9. The refrigeration appliance according to any one of claims 2 to 7, characterized in that: The air duct assembly (2) further comprises a rear cover plate (24) which is arranged between the first wall (11) and the heat insulation plate (23), and the rear cover plate (24) and the heat insulation plate (23) together enclose a transition section (203) of the air duct (20) between the first section (201) and the second section (202).

10. The refrigeration appliance according to claim 9, characterized in that: On the outer side of the transition section (203), the rear cover plate (24) surrounds the arc-shaped outer edge of the transition section (203); and / or On the inner side of the transition section (203), the heat insulation plate (23) surrounds a straight inner edge of the transition section (203), and the straight inner edge is inclined in a direction away from the first wall (11) in a direction toward the second cover plate (22).

11. The refrigeration appliance according to any one of claims 1 to 10, characterized in that: A second inclined section (222) is provided at the rear end of the second cover plate (22), and the second inclined section (222) includes an inclined surface (2221) facing the storage space (100).

12. The refrigeration appliance according to claim 11, characterized in that: The first cover plate (21) is provided with a first inclined section (211) at one end thereof adjacent to the second cover plate (22), and the first inclined section (211) is inclined in a direction away from the first wall (11) in a direction toward the second cover plate (22); The second inclined section (222) is parallel to the first inclined section (211); the first inclined section (211) and the second inclined section (222) are overlapped with each other.

13. The refrigeration appliance according to claim 12, characterized in that: The first inclined section (211) extends over the entire width or nearly the entire width of the first cover plate (21); and / or The second inclined section (222) extends over the entire width or nearly the entire width of the second cover plate (22).

14. The refrigeration appliance according to claim 12 or 13, characterized in that: The air duct assembly (2) comprises a sealing sheet (25) forming a sealing connection between a first inclined section (211) and a second inclined section (222), wherein: The sealing sheet (25) is clamped between the first inclined section (211) and the second inclined section (222); and / or At least one of the first inclined section (211) and the second inclined section (222) is provided with a sealing recess (212) suitable for accommodating a sealing sheet (25) on a side facing the other.

15. The refrigeration appliance according to any one of claims 1 to 14, characterized in that: The first cover plate (21) is provided with a receiving portion (213), the second cover plate (22) is provided with an embedding portion (223) suitable for embedding in the receiving portion (213), the first cover plate (21) and the second cover plate (22) are connected to each other via the receiving portion (213) and the embedding portion (223), wherein: The inner contour of the accommodating portion (213) and / or the outer contour of the embedded portion (223) are formed to be narrowed toward the first wall (11); and / or The inner contour of the receiving portion (213) and / or the outer contour of the embedded portion (223) is inclined toward the second wall (12) in a direction toward the first wall (11) on a side away from the second wall (12); and / or The dimensions of the inner contour of the accommodating portion (213) and / or the outer contour of the embedding portion (223) in a direction perpendicular to the second wall (12) are formed to become smaller toward the first wall (11).

16. The refrigeration appliance according to any one of claims 1 to 15, characterized in that: The second cover plate (22) is provided with a first convex rib (225) and a second convex rib (226) on a side facing away from the storage chamber (10); the first convex rib (225) and the second convex rib (226) respectively limit the second section (202) of the air duct (20) from opposite sides.

17. The refrigeration appliance according to claim 16, characterized in that: The first rib (225) and the second rib (226) extend away from each other at least partially in a main flow direction of the second section (202) of the air duct (20); and / or The air duct assembly (2) comprises a sealing strip (26) arranged on the first convex rib (225) and / or the second convex rib (226), and the sealing strip (26) is pressed against the second wall (12).

18. The refrigeration appliance according to any one of claims 1 to 17, characterized in that: The refrigeration appliance further comprises a heating device (27) arranged between the second cover plate (22) and the second wall (12); the second cover plate (22) is provided with a fixing structure (227) on a side facing away from the storage chamber (10) and suitable for fixing the heating device (27); wherein the heating device (27) comprises a heat conducting plate (271) fixed to the second cover plate (22) and a heating component (272) fixed to the heat conducting plate (271).

19. The refrigeration appliance according to claim 18, characterized in that: The fixing structure (227) comprises a fixing hook (2271), wherein the fixing hook (2271) is formed in a U shape and comprises a fixing leg extending from a cover plate base (220) of the second cover plate (22) and a free leg spaced apart from the cover plate base (220), wherein a gap between the cover plate base (220) and the free leg allows the heat conducting plate (271) to be inserted; and / or The fixing structure (227) includes a fixing protrusion (2272), which is formed on a rib of the second cover plate (22) that protrudes from the cover plate base (220) toward the second wall (12) and protrudes in a direction parallel to the second wall (12) relative to the rib. The fixing protrusion (2272) cooperates with the edge of the heat conducting plate (271) to limit the movement of the heat conducting plate (271) toward the second wall (12) and / or limit the movement of the heat conducting plate (271) in the extension direction of the rib.

Images