Air duct structure for refrigerator and refrigerator

Abstract

The utility model relates to the technical field of refrigeration equipment, and discloses an air duct structure for a refrigerator, and the air duct structure comprises an inner container and an outer container, the air duct cover plate covers the inner container, and an air duct is defined by the air duct cover plate and the inner container; and the fan is arranged in the air duct and is positioned at the fan volute. And the fan volute is adsorbed to the inner container, so that the fan volute and the inner container are integrally formed. The fan volute and the inner container are adsorbed into a whole through plates, the production process is simplified, and therefore production efficiency is improved, and production cost is reduced. In the assembling process, only the fan needs to be installed in the fan volute adsorbed to the inner container, the fan can be fixed, gas exhausted by the fan can be drained, the step of independently installing fan volute parts is omitted, the assembling procedure is simplified, and the assembling difficulty is lowered. In addition, independent installation of a fan volute is reduced, meanwhile, the overall thickness of the air duct structure can be reduced, the assembly space is reduced, and the refrigeration space of the refrigerator is increased. The utility model further discloses the refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to an air duct structure for a refrigerator and a refrigerator. Background Art

[0002] The air duct is the core component of the air-cooled freezer and plays an important role in the refrigeration effect of the freezer. At present, the air duct structure is usually composed of a front cover, a fan, a fan volute, a rear cover and other parts. The existing air duct structure requires many parts, and the assembly operation is relatively cumbersome. In addition, poor sealing during the entire assembly process will lead to cold leakage, so the air duct structure needs to be optimized.

[0003] A refrigerator air duct structure is provided in the related technology, including a groove integrally formed on the refrigerator box and a cover plate covering the groove, the groove is connected to the air supply duct, and the cover plate is provided with a through hole for cold air to flow into the refrigerator box. The refrigerator air duct structure is naturally formed by the cover plate and the box liner vacuum forming groove, which reduces the assembly sub-components of the refrigeration air duct and the freezing air duct, simplifies the operation steps during the air duct assembly, eliminates the in-box splicing operation of the traditional air duct and the air supply port, reduces the cold leakage caused by poor sealing, and reduces the risk of ice at the bottom of the refrigerator compartment and the freezer compartment.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The related technology only forms a groove on the refrigerator box that connects to the air supply duct, and then covers the groove to form a duct structure, which reduces the assembly of the rear cover. However, when installing the fan in the duct structure, the fan volute is still required to fix the fan. The fan volute is a separate component that needs to be processed and produced separately. Therefore, the production process of the duct structure needs to be further simplified.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide an air duct structure for a refrigerator and the refrigerator, so as to simplify the production process of the air duct structure and reduce the production cost.

[0009] According to a first aspect of an embodiment of the utility model, there is provided an air duct structure for a refrigerator, comprising: an inner tank with a fan volute adsorbed thereon; an air duct cover plate, which is arranged on the inner tank and defines an air duct with the inner tank; and a fan, which is arranged in the air duct and located at the fan volute.

[0010] Optionally, the fan volute is provided with a connecting port, and the inner tank is also adsorbed with an air supply duct groove, and the air supply duct groove is connected with the connecting port.

[0011] Optionally, the air duct cover includes a connected fan cover and an air supply cover, the fan cover is arranged opposite to the fan volute, the air supply cover is arranged opposite to the air supply duct groove, and the fan cover, the air supply cover and the inner tank jointly enclose the air outlet duct.

[0012] Optionally, the air supply cover is provided with an air supply port, which is connected to the air duct, and the cold air in the air duct flows into the refrigeration space of the refrigerator through the air supply port.

[0013] Optionally, the air supply cover is arranged on the side wall of the inner tank, and the number of air supply outlets is multiple, and the multiple air supply outlets include a first air supply outlet and a second air supply outlet, and the first air supply outlet and the second air supply outlet are arranged in sequence along the width direction of the side wall.

[0014] Optionally, there are multiple air supply cover plates, including a first air supply cover plate and a second air supply cover plate, the first air supply cover plate is connected to one end of the fan cover plate, the second air supply cover plate is connected to the other end of the fan cover plate, the first air supply outlet is arranged on the first air supply cover plate, and the second air supply outlet is arranged on the second air supply cover plate.

[0015] Optionally, there are multiple connecting ports, including a first connecting port and a second connecting port; the air supply duct groove is adsorbed on the side wall of the inner tank, and the number of the air supply duct groove is multiple, including a first air supply duct groove and a second air supply duct groove, and the first air supply duct groove and the second air supply duct groove are arranged in sequence along the width direction of the side wall; wherein, one end of the first air supply duct groove is connected to the first connecting port, and the other end is connected to the first air supply port, and one end of the second air supply duct groove is connected to the second connecting port, and the other end is connected to the second air supply port.

[0016] Optionally, there are multiple air supply outlets, and the air duct structure further includes: a diversion guide plate, which is arranged in the air duct and extends along the flow direction of the airflow in the air duct to divide the air duct into multiple sub-air ducts, and each sub-air duct is connected to at least one air supply outlet.

[0017] Optionally, the fan volute and the air supply duct groove are adsorbed on the same side wall of the inner tank.

[0018] According to a second aspect of the embodiments of the utility model, a refrigerator is provided, comprising any of the above-mentioned air duct structures for refrigerators.

[0019] The air duct structure for a refrigerator and the refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The fan volute is adsorbed on the inner liner so that the fan volute and the inner liner are formed in one piece. The fan volute and the inner liner are adsorbed into one piece by a plate, which simplifies the production process, thereby improving production efficiency and reducing production costs. During assembly, the fan only needs to be installed in the fan volute adsorbed on the inner liner, which can not only fix the fan but also guide the gas discharged by the fan, reducing the steps of separately installing the fan volute parts, simplifying the assembly process and reducing the difficulty of assembly. In addition, reducing the separate installation of the fan volute can also reduce the overall thickness of the air duct structure, reduce the assembly space, and increase the refrigeration space of the refrigerator.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a schematic diagram of an air duct structure for a refrigerator provided by an embodiment of the present disclosure;

[0024] Figure 2 is another schematic diagram of an air duct structure for a refrigerator provided by an embodiment of the present disclosure;

[0025] Figure 3 yes Figure 2 A schematic cross-sectional view of an air duct structure for a refrigerator in the AA direction is shown in FIG. , wherein the arrow direction indicates the width direction of the side wall;

[0026] Figure 4 yes Figure 3 A local enlarged schematic diagram of point B shown in FIG.

[0027] Figure 5 is a structural schematic diagram of a fan and an air supply cover provided in an embodiment of the present disclosure, wherein the direction of the arrow indicates the flow direction of the airflow in the air duct;

[0028] Figure 6 yes Figure 5 A local enlarged schematic diagram of the C shown in FIG.

[0029] Figure 7 yes Figure 5 A local enlarged schematic diagram of D shown in FIG.

[0030] Figure 8is a schematic structural diagram of an inner container provided by an embodiment of the present disclosure;

[0031] Fig. 9 yes Figure 8 A schematic cross-sectional view of the inner tank along the EE direction is shown in FIG.

[0032] Reference numerals:

[0033] 10: liner; 11: fan volute; 111: communication port; 112: first communication port; 113: second communication port; 12: air supply channel groove; 121: first air supply channel groove; 122: second air supply channel groove; 13: side wall; 14: first positioning matching portion; 141: slot; 15: first fixing hole;

[0034] 20: air duct cover; 21: return air outlet; 22: fan cover; 23: air supply cover; 231: air supply outlet; 232: first air supply outlet; 233: second air supply outlet; 234: first air supply cover; 235: second air supply cover; 24: first cover; 241: limiting portion; 242: claw; 25: second cover; 251: limiting matching portion; 252: bayonet; 26: first positioning portion; 261: clamping block; 27: first mounting hole;

[0035] 30: fan; 31: rotating shaft; 32: second mounting hole;

[0036] 40: Diverter guide plate. DETAILED DESCRIPTION

[0037] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0038] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0040] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] Unless otherwise stated, the term "plurality" means two or more.

[0042] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0043] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0045] The evaporator of an air-cooled freezer is hidden inside the freezer. The air in the refrigeration space is sucked in by the fan, heat exchanged with the evaporator, the air temperature is lowered, and then the cold air is circulated through the air duct and sent back to the refrigeration space of the freezer to achieve the cooling effect. The air duct is the core component of the air-cooled freezer and plays an important role in the cooling effect of the freezer. At present, the air duct structure is usually composed of components such as the front cover, fan, fan volute, and rear cover. The existing air duct structure requires many components, and the assembly operation is relatively cumbersome. In addition, if the entire assembly process is poorly sealed, it will cause cold leakage, increase the power consumption rate of the freezer, and easily cause the risk of ice in the refrigeration space of the freezer. Therefore, it is necessary to optimize the air duct structure of the freezer.

[0046] A refrigerator air duct structure is provided in the related technology, including a groove integrally formed on the refrigerator box and a cover plate covering the groove, the groove is connected to the air supply duct, and the cover plate is provided with a through hole for cold air to flow into the refrigerator box. The refrigerator air duct structure is naturally formed by the cover plate and the box liner vacuum forming groove, which reduces the assembly sub-components of the refrigeration air duct and the freezing air duct, simplifies the operation steps during the air duct assembly, eliminates the in-box splicing operation of the traditional air duct and the air supply port, reduces the cold leakage caused by poor sealing, and reduces the risk of ice at the bottom of the refrigerator compartment and the freezer compartment.

[0047] The related technology only forms a groove on the refrigerator box that connects to the air supply duct, and then covers the groove to form a duct structure, which reduces the assembly of the rear cover. However, when installing the fan in the duct structure, the fan volute still needs to be installed to fix the fan, and the separate setting of the fan volute increases the assembly process. The separate setting of the fan volute increases the thickness of the duct structure, occupies additional assembly space, and increases production costs.

[0048] Therefore, the present application adopts adsorption technology to integrate the fan volute 11 and the inner tank 10 into an integrated design, thereby simplifying the production process and assembly process of the air duct.

[0049] Combination Figure 1-9 As shown, the embodiment of the present disclosure provides an air duct structure for a refrigerator, combined with Figure 1 and Fig. 9 As shown, the air duct structure includes an inner liner 10, an air duct cover 20 and a fan 30. The inner liner 10 is adsorbed with a fan volute 11; the air duct cover 20 is covered on the inner liner 10 and defines an air duct with the inner liner 10; the fan 30 is arranged in the air duct and located at the fan volute 11.

[0050] By using the air duct structure for a refrigerator provided by the embodiment of the present disclosure, the fan volute 11 can be adsorbed on the inner liner 10, so that the fan volute 11 and the inner liner 10 are integrally formed, the inner liner 10 of the box body is reasonably utilized, and the inner liner 10 of the box body is used as a part of the air duct structure, thereby streamlining the air duct structure and improving the processing efficiency of the air duct structure. In the embodiment of the present disclosure, the fan volute 11 has the dual functions of supporting the fan 30 and guiding the airflow of the fan 30. During assembly, the fan 30 only needs to be installed in the fan volute 11 located on the inner liner 10, and there is no need to separately install the fan volute 11 and the fan bracket, which simplifies the assembly process and reduces the difficulty of assembly. In addition, reducing the separate installation of the fan volute 11 can also reduce the overall thickness of the air duct structure, reduce the assembly space, and also reduce the production cost.

[0051] Optionally, combined Fig. 9 As shown, the fan volute 11 is provided with a communication port 111 , and the inner tank 10 is also adsorbed with an air supply duct groove 12 , and the air supply duct groove 12 is connected with the communication port 111 .

[0052] The air supply duct groove 12 is integrally formed with the inner liner 10 by adsorption, which reduces the use of sub-accessories of the air supply duct groove 12. The air supply duct groove 12, the fan volute 11 and the inner liner 10 are formed into one by adsorption of the plate, which reduces the number of parts that make up the air duct and reduces the production cost. The air duct cover plate 20 and the inner liner 10 can jointly enclose the air outlet duct. The air duct structure is based on the adsorption of the inner liner 10 and consists of three parts: the inner liner 10, the fan 30 and the air duct cover plate 20. Using the inner liner 10 as a part of the air duct eliminates the need for separate assembly of the air supply duct groove 12, the fan volute 11 and the fan bracket, thereby greatly reducing the processing cost of the air duct, and also simplifies the operating steps during the assembly of the air duct, reducing the difficulty of assembling the air duct structure.

[0053] The fan volute 11 collects cold air from the fan 30 and guides the cold air to the communication port 111 of the fan volute 11 . The cold air is discharged into the air supply duct 12 through the communication port 111 .

[0054] Optionally, combined Figure 3 , Figure 5 and Fig. 9 As shown, the air duct cover 20 includes a fan cover 22 and an air supply cover 23 connected to each other. The fan cover 22 is arranged opposite to the fan volute 11, and the air supply cover 23 is arranged opposite to the air supply duct groove 12. The fan cover 22, the air supply cover 23 and the inner tank 10 jointly enclose the air outlet duct.

[0055] The air duct cover plate 20 is provided with two parts, namely, a fan cover plate 22 and an air supply cover plate 23. The fan cover plate 22 and the air supply cover plate 23 can be detachably connected, and can be connected by detachable means such as snap connection, plug connection, screw and bolt connection, etc. In this way, through the split design, the product size of the air duct cover plate 20 can be reduced, and the mold cost can be reduced. It can be understood that the fan cover plate 22 and the air supply cover plate 23 can also be connected in a non-detachable manner.

[0056] Optionally, combined Figure 3 and Figure 5 As shown, the air supply cover plate 23 is provided with an air supply port 231, and the air supply port 231 is connected to the air duct, and the cold air in the air duct flows into the refrigeration space of the refrigerator through the air supply port 231. The refrigeration space of the refrigerator is the space in the compartment of the refrigerator that can store things and needs to be refrigerated. The air supply port 231 connecting the air duct and the refrigeration space of the refrigerator is provided on the air supply cover plate 23, and the cold air is blown into the air duct by the fan 30, and then flows into the refrigeration space of the refrigerator from the air supply port 231, so that air cooling can be effectively achieved.

[0057] Alternatively, if Figure 3As shown, the air supply cover 23 is covered on the side wall 13 of the inner tank 10, and the number of air supply ports 231 is multiple, and the multiple air supply ports 231 include a first air supply port 232 and a second air supply port 233. The first air supply port 232 and the second air supply port 233 are arranged in sequence along the width direction of the side wall 13.

[0058] Taking a horizontal refrigerator as an example, the air outlet 231 is arranged on the side wall 13 of the inner container 10, so that the stacked items in each layer in the refrigerator can be cooled more comprehensively. A plurality of air outlets 231 are arranged along the width direction of the side wall 13, so that the air supply coverage area is larger and the air supply effect is better. Figure 3 As shown, the arrow direction indicates the width direction of the side wall 13, and the first air supply port 232 and the second air supply port 233 are arranged along the width direction of the side wall 13 of the inner liner 10. The first air supply port 232 and the second air supply port 233 are arranged in sequence along the width direction of the side wall 13, which means that the first air supply port 232 and the second air supply port 233 are respectively arranged on both sides of the side wall 13 along the width direction of the side wall 13. Among them, the first air supply port 232 and the second air supply port 233 can be arranged adjacent to each other. Along the width direction of the side wall 13, a third air supply port can also be arranged between the first air supply port 232 and the second air supply port 233. It can be understood that the third air supply port can also be arranged at other positions of the side wall.

[0059] Alternatively, if Figure 3 As shown, there are multiple air supply covers 23, including a first air supply cover 234 and a second air supply cover 235. The first air supply cover 234 is connected to one end of the fan cover 22, and the second air supply cover 235 is connected to the other end of the fan cover 22. The first air supply port 232 is provided on the first air supply cover 234, and the second air supply port 233 is provided on the second air supply cover 235.

[0060] like Figure 3 As shown, the first air supply port 232 is arranged on the first air supply cover plate 234 located at the upper end of the side wall 13, and the second air supply port 233 is arranged on the second air supply cover plate 235 located at the lower end of the side wall 13. The cold air flowing out of the first air supply port 232 at the upper end of the side wall 13 can well cool the items stacked on the upper layer, and at the same time, the cold air sinks to cool the items on the lower layer. During the sinking process of the cold air flowing out of the first air supply port 232, the cooling effect on the items on each layer gradually decreases. The cold air flowing out of the second air supply port 233 located at the lower end of the side wall 13 can effectively cool the items stacked on the lower layer. It can be understood that the air supply cover plate 23 and the air supply port 231 can also be arranged at the middle end of the side wall 13 of the inner liner 10, so that the items stacked in the middle position in the refrigeration space of the refrigerator can be effectively cooled.

[0061] Optionally, combined Figure 3 and Fig. 9As shown, there are multiple connecting ports 111, including a first connecting port 112 and a second connecting port 113; the air supply duct groove 12 is adsorbed on the side wall of the inner tank 10, and there are multiple air supply duct grooves 12, including a first air supply duct groove 121 and a second air supply duct groove 122, and the first air supply duct groove 121 and the second air supply duct groove 122 are arranged in sequence along the width direction of the side wall; wherein, one end of the first air supply duct groove 121 is connected to the first connecting port 112, and the other end is connected to the first air supply port 232, and one end of the second air supply duct groove 122 is connected to the second connecting port 113, and the other end is connected to the second air supply port 233.

[0062] The air supply duct groove 12 is arranged correspondingly to the air supply port 231. According to the number and position of the air supply port 231, the air supply duct groove 12 is adsorbed correspondingly on the inner liner 10 at the position corresponding to the air supply cover plate 23. The first air supply duct groove 121 and the first air supply port 232 are arranged correspondingly, and the second air supply duct groove 122 and the second air supply port 233 are arranged correspondingly, so the first air supply duct groove 121 and the second air supply duct groove 122 are also arranged in sequence along the width direction of the side wall 13. In this way, a branch air duct facing multiple directions can be formed, which can cool the refrigeration space of the refrigerator in a larger range and improve the refrigeration effect.

[0063] Alternatively, if Figure 5 As shown, there are multiple air supply outlets 231, and the air duct structure also includes: a diversion guide plate 40, which is arranged in the air duct and extends along the flow direction of the airflow in the air duct to divide the air duct into multiple sub-air ducts, each sub-air duct is connected to at least one air supply outlet 231.

[0064] The multiple air outlets 231 deliver cold air to the refrigeration space of the refrigerator, which can more effectively improve the refrigeration efficiency and the uniformity of refrigeration. Figure 5 As shown, the arrow direction indicates the flow direction of the airflow in the air duct. A diverter guide plate 40 is arranged in the air duct along the flow direction of the airflow, so that the cold air in the air duct can be diverted to form multiple sub-air ducts. There are multiple diverter guide plates 40, and the multiple diverter guide plates 40 extend to at least one air supply port 231 along the flow direction of the airflow in the air duct. The cold air is guided to flow to each air supply port 231 by multiple diverter guide plates 40, so that the cold air can flow evenly into the refrigeration space of the refrigerator, thereby improving the refrigeration effect of the refrigerator.

[0065] Optionally, at least one of the air branch channels is provided with a flow dividing guide plate 40. The flow dividing guide plates 40 are provided in each of the air branch channels facing multiple directions to divide the cold air in the air branch channels, so that the air supply effect can be optimized, thereby improving the cooling effect.

[0066] Optionally, combined Figures 1 to 3As shown, the fan volute 11 and the air supply duct groove 12 are attached to the same side wall of the inner liner. The fan cover plate 22 and the air supply cover plate 23 are covered on the same side wall of the inner liner 10, and the fan volute 11 and the air supply duct groove 12 are attached to the same side wall of the inner liner 10. The fan 30 and the air supply duct are both arranged on the same side wall of the inner liner 10, so that the cold air flowing out of the fan 30 can flow into various parts of the duct through a shorter path and flow out of the air supply port 231, and the duct does not need to pass through a right-angle corner, thereby reducing the loss of airflow and reducing energy consumption.

[0067] Optionally, combined Figure 5 and Figure 6 As shown, the first air supply cover plate 234 includes a first cover plate 24 and a second cover plate 25 , the first cover plate 24 is detachably connected to the fan cover plate 22 , and the first cover plate 24 is detachably connected to the second cover plate 25 .

[0068] Multiple air supply cover plates 23 are all designed in a split type, so that the size of the air supply cover plates 23 can be reduced and the mold cost can be reduced. Taking the first air supply cover plate 234 as an example, the first air supply cover plate 234 includes a first cover plate 24 and a second cover plate 25. The connection between the first cover plate 24 and the fan cover plate 22 is the connection between the first air supply cover plate 234 and the fan cover plate 22. The first cover plate 24 and the second cover plate 25 can be connected in a detachable manner such as a snap connection, plug-in connection, screw and bolt connection, etc. Similarly, the second air supply cover plate 235 can also be connected in the above-mentioned detachable manner to reduce the product size.

[0069] Taking the snap connection as an example, one of the first cover plate 24 and the second cover plate 25 is provided with a limiting portion 241, and the other is provided with a limiting matching portion 251, and the limiting portion 241 and the limiting matching portion 251 cooperate to connect the first cover plate 24 with the second cover plate 25. Optionally, one of the limiting portion 241 and the limiting matching portion 251 is a claw 242, and the other is a bayonet 252. Figure 6 As shown, the first cover plate 24 is provided with a claw 242 , and the second cover plate 25 is provided with a bayonet 252 . By buckling the bayonet 252 onto the claw 242 , the first cover plate 24 can be fixedly connected to the second cover plate 25 .

[0070] It can be understood that the first cover plate 24 and the second cover plate 25 can also be connected in a non-detachable manner.

[0071] Optionally, combined Figure 5 , Figure 6 and Fig. 9 As shown, the air duct cover plate 20 is provided with a first positioning portion 26 , and the inner container 10 is provided with a first positioning matching portion 14 . The first positioning portion 26 cooperates with the first positioning matching portion 14 to position the air duct cover plate 20 on the inner container 10 .

[0072] Optionally, the first positioning portion 26 is provided on the fan cover 22 and / or the air supply cover 23 , and the inner tank 10 is provided with a first positioning matching portion 14 accordingly.

[0073] Optionally, the first positioning portion 26 is provided on the fan cover 22 , and the inner tank 10 is correspondingly provided with a first positioning matching portion 14 , and the first positioning portion 26 cooperates with the first positioning matching portion 14 to position the fan cover 22 on the inner tank 10 and correspond to the fan volute 11 .

[0074] Optionally, the first positioning portion 26 is provided on the air supply cover 23 , and the inner liner 10 is correspondingly provided with a first positioning matching portion 14 , and the first positioning portion 26 cooperates with the first positioning matching portion 14 to position the air supply cover 23 on the inner liner 10 and correspond to the air supply duct groove 12 .

[0075] Optionally, the first positioning portion 26 is a block 261, and the first positioning matching portion 14 is a slot 141; or, the first positioning portion 26 is a slot, and the first positioning matching portion 14 is a block 261. Figure 6 As shown, the first positioning portion 26 is a block 261. Fig. 9 As shown, the first positioning and matching portion 14 is a clamping groove 141 , and the air duct cover plate 20 is positioned on the inner tank 10 by clamping the clamping block 261 with the clamping groove 141 .

[0076] Alternatively, if Figure 7 As shown, the air duct cover plate 20 is provided with a first mounting hole 27. Fig. 9 As shown, the inner liner 10 is provided with a first fixing hole 15, and the first mounting hole 27 cooperates with the first fixing hole 15 to fix the air duct cover plate 20 to the inner liner 10. The air duct cover plate 20 is fixed to the inner liner 10 by screws passing through the first mounting hole 27 and the first fixing hole 15.

[0077] Optionally, the first mounting hole 27 is provided on the fan cover 22 and / or the air supply cover 23 , and the inner tank 10 is provided with the first fixing hole 15 accordingly.

[0078] Optionally, the fan 30 is provided with a second positioning portion (not shown in the figure), and the inner tank 10 is provided with a second positioning matching portion (not shown in the figure), and the second positioning portion cooperates with the second positioning matching portion to position the fan 30 in the inner tank 10.

[0079] Optionally, the second positioning portion is a hook, and the second positioning matching portion is a hole; or, the second positioning portion is a hole, and the second positioning matching portion is a hook. Optionally, the second positioning portion is a hook (not shown in the figure), and the second positioning matching portion is a hole (not shown in the figure), and the fan 30 is positioned on the inner tank 10 by engaging the hook with the hole.

[0080] Alternatively, if Figure 7As shown, the fan 30 is provided with a second mounting hole 32, and the inner liner 10 is provided with a second fixing hole (not shown in the figure), and the second mounting hole 32 cooperates with the second fixing hole to fix the fan 30 to the inner liner 10. The fan 30 is fixed to the inner liner 10 by passing a screw through the second mounting hole 32 and the second fixing hole.

[0081] The fan 30 and the air duct cover 20 are fixed to the inner tank 10 by snap connection and / or screw connection. Among them, the fan 30 and the air duct cover 20 are double fixed by snap connection and screw connection, which can enhance the fixing effect and reduce the difficulty of assembly.

[0082] Optionally, combined Figure 2 and Figure 3 As shown, the air duct cover plate 20 is provided with a return air port 21, which is used to make the air in the refrigeration space of the refrigerator flow back into the air duct through the return air port 21 under the action of the fan 30. The fan 30 draws the air in the refrigeration space of the refrigerator into the air duct through the return air port 21, and then exchanges heat with the evaporator, which can reduce the air temperature. Through the cooperation of the fan 30 and the return air port 21, the return air efficiency can be improved, thereby better realizing the circulation of cold air.

[0083] Alternatively, if Figure 4 As shown, the straight line where the rotating shaft 31 of the fan 30 is located passes through the return air inlet 21. The position of the return air inlet 21 relative to the fan 30 will affect the return air efficiency to a certain extent. The straight line where the rotating shaft 31 of the fan 30 is located passes through the return air inlet 21, which can increase the area of ​​the fan 30 exposed at the return air inlet 21, so that the fan 30 directly contacts the air in the refrigeration space of the refrigerator, thereby enhancing the air suction capacity. Among them, when the straight line where the rotating shaft 31 is located is at the center point of the return air inlet 21, the air suction capacity of the fan 30 is the strongest, so that the return air efficiency can be effectively improved.

[0084] It is understandable that the return air port 21 may also be disposed at a position where the air duct cover 20 is not opposite to the fan 30 .

[0085] An embodiment of the present disclosure provides a refrigerator, comprising any of the above-mentioned air duct structures for refrigerators.

[0086] The refrigerator provided in the embodiment of the present disclosure includes the air duct structure for a refrigerator described in any one of the above embodiments, and thus has all the beneficial effects of the air duct structure for a refrigerator described in any one of the above embodiments, which will not be described in detail here.

[0087] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air duct structure for a refrigerator, characterized in that: include: The inner tank is adsorbed with a fan volute, so that the fan volute and the inner tank are integrally formed, and the fan volute and the inner tank are adsorbed into one body by a plate; An air duct cover plate is arranged on the inner liner and defines an air duct with the inner liner; The fan is arranged in the air duct and located at the fan volute.

2. The air duct structure for a refrigerator according to claim 1, characterized in that: The fan volute is provided with a connecting port, and the inner tank is also adsorbed with an air supply duct groove, the air supply duct groove is integrally formed with the inner tank by adsorption, and the air supply duct groove is connected with the connecting port.

3. The air duct structure for a refrigerator according to claim 2, characterized in that: The air duct cover plate includes a fan cover plate and an air supply cover plate connected to each other. The fan cover plate is arranged opposite to the fan volute, and the air supply cover plate is arranged opposite to the air supply duct groove. The fan cover plate, the air supply cover plate and the inner tank jointly enclose the air outlet duct.

4. The air duct structure for a refrigerator according to claim 3, characterized in that: The air supply cover is provided with an air supply port, which is connected with the air duct, and the cold air in the air duct flows into the refrigeration space of the refrigerator through the air supply port.

5. The air duct structure for a refrigerator according to claim 4, characterized in that: The air supply cover is arranged on the side wall of the inner tank, and the number of air supply ports is multiple, and the multiple air supply ports include a first air supply port and a second air supply port, and the first air supply port and the second air supply port are arranged in sequence along the width direction of the side wall.

6. The air duct structure for a refrigerator according to claim 5, characterized in that: There are multiple air supply cover plates, including a first air supply cover plate and a second air supply cover plate. The first air supply cover plate is connected to one end of the fan cover plate, and the second air supply cover plate is connected to the other end of the fan cover plate. The first air supply port is arranged on the first air supply cover plate, and the second air supply port is arranged on the second air supply cover plate.

7. The air duct structure for a refrigerator according to claim 5, characterized in that: There are multiple connecting ports, including a first connecting port and a second connecting port; the air supply duct groove is adsorbed on the side wall of the inner liner, and the air supply duct groove is integrally formed with the inner liner by adsorption. There are multiple air supply duct grooves, including a first air supply duct groove and a second air supply duct groove, and the first air supply duct groove and the second air supply duct groove are arranged in sequence along the width direction of the side wall; wherein, one end of the first air supply duct groove is connected to the first connecting port, and the other end is connected to the first air supply port, and one end of the second air supply duct groove is connected to the second connecting port, and the other end is connected to the second air supply port.

8. The air duct structure for a refrigerator according to any one of claims 4 to 7, characterized in that: There are multiple air outlets, and the air duct structure also includes: The flow dividing guide plate is arranged in the air duct and extends along the flow direction of the airflow in the air duct to divide the air duct into a plurality of sub-air ducts, each of which is connected to at least one air supply port.

9. The air duct structure for a refrigerator according to any one of claims 2 to 7, characterized in that: The fan volute and the air supply duct groove are adsorbed on the same side wall of the inner tank, and the air supply duct groove, the fan volute and the inner tank are adsorbed into one body by the plate.

10. A refrigerator, characterized in that: It comprises the air duct structure for a refrigerator as described in any one of claims 1 to 9.

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