Air duct structure of air-cooled refrigerator

Abstract

The utility model relates to an air-cooled refrigerator air duct structure which comprises an air duct piece installed between a freezing chamber inner container and a refrigerating chamber inner container in a limited mode through a positioning installation part and / or a limiting installation part, the freezing chamber inner container comprises a freezing chamber provided with a freezing evaporator, the refrigerating chamber inner container comprises a refrigerating chamber, and the air duct piece is provided with an air supply opening and an air return opening. The freezing chamber and the refrigerating chamber are communicated with the air supply port and the air return port; cold air conveyed to the freezing chamber by the freezing evaporator is conveyed to the refrigerating chamber through the air supply port, and cold air of the refrigerating chamber passes through the freezing evaporator of the freezing chamber through the air return port to form a cold air circulation conveying channel between the freezing chamber and the refrigerating chamber. When the air duct piece is installed, the structure is simple, only the positioning installation part and / or the limiting installation part need to be installed between the freezing chamber inner container and the refrigerating chamber inner container in a limiting mode, complex assembling and sealing processes are not needed, the production takt is improved, and the reject ratio of products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator air ducts, and particularly relates to an air-cooled refrigerator air duct structure. Background Art

[0002] Due to the unique advantage of frost-free for air-cooled refrigerators, consumers increasingly favor air-cooled refrigerators, and the market share of air-cooled refrigerators is also getting higher and higher. In an air-cooled refrigerator, the air duct structure is a key element and has an important impact on the refrigeration performance of the refrigerator. If an air duct structure with poor design is encountered, problems such as high energy consumption of the refrigerator and poor uniformity of refrigeration temperature will occur. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an air-cooled refrigerator air duct structure. An air duct member for connecting different compartments is provided in the refrigerator foam layer, forming a channel for an air circulation loop between different compartments of the refrigerator. The air in the freezer is sent to the refrigerator compartment through this air duct member, and the air in the refrigerator compartment returns to the freezer through this air duct member. And when installing this air duct member, the structure is simple, only the positioning installation part and / or the limiting installation part need to be used for limiting installation between the freezer inner liner and the refrigerator compartment inner liner, without complex assembly and sealing processes, improving the production rhythm and reducing the defective rate of the product.

[0004] An air-cooled refrigerator air duct structure designed according to this purpose includes an air duct member that is limited and installed between the freezer inner liner and the refrigerator compartment inner liner through a positioning installation part and / or a limiting installation part. The freezer inner liner includes a freezer compartment provided with a freezer evaporator, and the refrigerator compartment inner liner includes a refrigerator compartment. The air duct member is provided with an air supply port and a return air port; the freezer compartment is communicated with the refrigerator compartment through the air supply port, and the freezer compartment is communicated with the refrigerator compartment through the return air port; the cold air delivered from the freezer evaporator to the freezer compartment is transported to the refrigerator compartment through the air supply port, and the cold air in the refrigerator compartment passes through the return air port and the freezer evaporator in the freezer compartment to form a cold air circulation and transportation channel between the freezer compartment and the refrigerator compartment.

[0005] The air duct member connects the freezer inner liner and the refrigerator compartment inner liner and communicates the freezer compartment and the refrigerator compartment, without complex assembly and sealing processes.

[0006] Two return air ports are provided on the air duct member at left and right intervals, and the air supply port is located between the two return air ports. The setting of the two return air ports has a shunt effect during the cold air circulation process, which not only improves the return air efficiency but also ensures the uniformity of the refrigeration temperature.

[0007] A return air pipe is provided on the return air port of the air duct member. The air duct member is provided with a limiting groove portion corresponding to the return air port. The return air pipe is inserted into the limiting groove portion, and a seal is formed between the return air pipe and the limiting groove portion.

[0008] A sealing flange edge is provided on the outer side of the return air duct for sealing the assembly gap between the return air duct and the limit groove part. The bottom of the return air duct is directly inserted into the limit groove part of the air duct component and is provided with a sealing flange edge, so that no excessive complex sealing structure needs to be set at the assembly part between the return air duct and the air duct component.

[0009] A connection port is provided on the freezer inner liner corresponding to the top of the return air duct. The top of the return air duct is inserted into the connection port of the freezer inner liner. The return air duct is located below the freezer evaporator. The top of the return air duct is provided with a return air delivery port communicating the freezer, the freezer evaporator and the return air outlet. Guide walls for forming the return air delivery port are provided on both the inner and outer sides of the top of the return air duct. When the defrosting water of the freezer inner liner drops onto the guide walls of the return air duct, the defrosting water flows along the guide walls into the freezer inner liner, so that the defrosting water and the like do not flow into the refrigerator compartment through the return air duct.

[0010] The guide walls are inclined, and the slope of the guide walls gradually increases along the direction in which the defrosting water flows into the freezer inner liner.

[0011] The top of the return air duct is connected to the freezer inner liner. The return air duct is connected to the freezer inner liner through a plug-in structure, and a limit edge abutting against the outer side of the freezer inner liner is provided on the top of the return air duct to prevent cold air from leaking outside the freezer inner liner.

[0012] The air duct component is positioned and installed on the top of the refrigerator inner liner. Ventilation openings are provided on the top of the refrigerator inner liner corresponding to the air supply outlet and the return air outlet of the air duct component;

[0013] Two spaced positioning posts are provided on the back of the refrigerator inner liner. The air duct component is provided with positioning bosses corresponding to the positioning posts. The positioning bosses of the air duct component are positioned and installed between the two positioning posts to form a positioning and installation part between the air duct component and the refrigerator inner liner.

[0014] The air duct component is provided with a limit groove, and the refrigerator inner liner is provided with a limit boss corresponding to the limit groove. The limit groove of the air duct component is limited on the limit boss to form a limit installation part between the air duct component and the refrigerator inner liner.

[0015] By the synchronous action of the above various limiting and positioning installation measures, the positioning and installation accuracy of the air duct component is improved. When the assembler assembles and installs in the workshop, only the air duct component needs to be directly inserted between the freezer inner liner and the refrigerator inner liner, without the need for caulking or using tapes and sponges for sealing, greatly improving the production efficiency.

[0016] A freezer air duct for accommodating and installing a freezer evaporator is provided between the freezer inner liner and the freezer. The air outlet of the freezer air duct communicates with the freezer, and the air inlet of the freezer air duct communicates with the return air outlet of the air duct component. The air duct component is a foam air duct.

[0017] The utility model has the following beneficial effects:

[0018] A duct member for connecting different compartments is provided inside the foam layer of the refrigerator, forming a channel for the air circulation between different compartments of the refrigerator. The air in the freezer is sent to the refrigerator compartment through this duct member, and the air in the refrigerator compartment returns to the freezer through this duct member. Moreover, when installing this duct member, the structure is simple. It only needs to be positionally installed and / or limitedly installed between the inner liner of the freezer and the inner liner of the refrigerator compartment, without complex assembly and sealing processes, improving the production rhythm and reducing the defective rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the back structure of the inner liner of the freezer and the inner liner of the refrigerator compartment of the refrigerator according to an embodiment of the present invention.

[0020] Figure 2 Schematic cross-sectional structure diagram of the inner liner of the freezer and the inner liner of the refrigerator compartment of the refrigerator according to an embodiment of the present invention.

[0021] Figure 3 Schematic cross-sectional structure diagram of the inner liner of the freezer and the inner liner of the refrigerator compartment of the refrigerator according to an embodiment of the present invention from another orientation.

[0022] Figure 4 Schematic cross-sectional structure diagram of the assembly of the inner liner of the refrigerator compartment and the duct member according to an embodiment of the present invention.

[0023] Figure 5 Exploded structure diagram of the assembly of the return air duct and the duct member according to an embodiment of the present invention.

[0024] Figure 6 Schematic structure diagram of the assembly of the return air duct and the duct member according to an embodiment of the present invention.

[0025] Figure 7 Schematic plan structure diagram of the duct member according to an embodiment of the present invention.

[0026] Figure 8 Schematic cross-sectional structure diagram of the assembly of the return air duct of the duct member and the inner liner of the freezer according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present invention will be further described below in conjunction with the drawings and embodiments.

[0028] See Figures 1-8, An air-cooled refrigerator air duct structure, including an air duct member 3 that is limited and installed between the freezer inner liner 1 and the refrigerator inner liner 2 through a positioning installation part and / or a limiting installation part. The freezer inner liner 1 includes a freezer compartment 5 provided with a freezer evaporator 4, the refrigerator inner liner 2 includes a refrigerator compartment 6, and the air duct member 3 is provided with an air supply port 7 and a return air port 8; the freezer compartment 5 is communicated with the air supply port 7 of the refrigerator compartment 6, and the freezer compartment 5 is communicated with the return air port 8 of the refrigerator compartment 6; the cold air delivered to the freezer compartment 5 by the freezer evaporator 4 is delivered to the refrigerator compartment 6 through the air supply port 7, and the cold air in the refrigerator compartment 6 passes through the freezer evaporator 4 in the freezer compartment 5 through the return air port 8 to form a cold air circulation delivery channel between the freezer compartment 5 and the refrigerator compartment 6.

[0029] The air duct member 3 is connected to the freezer inner liner 1 and the refrigerator inner liner 2 of the refrigerator foam layer, and the freezer compartment 5 and the refrigerator compartment 6 are communicated with the air duct member 3. A cold air circulation delivery channel is formed between the freezer compartment 5, the refrigerator compartment 6 and the air duct member 3. The air in the freezer compartment 5 is sent to the refrigerator compartment 6 through this cold air circulation delivery channel, and the air in the refrigerator compartment 6 returns to the freezer compartment 5 through this cold air circulation delivery channel.

[0030] There are two return air ports 8 arranged at intervals left and right on the air duct member 3, and the air supply port 7 is located between the two return air ports 8.

[0031] A return air pipe 9 is provided on the return air port 8 of the air duct member 3. The air duct member 3 is provided with a limiting groove part 10 corresponding to the return air port 8. The return air pipe 9 is inserted into the limiting groove part 10, and a seal is formed between the return air pipe 9 and the limiting groove part 10.

[0032] A sealing flange edge 11 for sealing the assembly gap between the return air pipe 9 and the limiting groove part 10 is provided on the outer side of the return air pipe 9.

[0033] The freezer inner liner 1 is provided with a connection port corresponding to the top of the return air pipe 9. The top of the return air pipe 9 is inserted into the connection port of the freezer inner liner 1. The return air pipe 9 is located below the freezer evaporator 4. The top of the return air pipe 9 is provided with a return air delivery port 12 communicating the freezer compartment 5, the freezer evaporator 4 and the return air port 8. Guide walls 13 for forming the return air delivery port 12 are provided on the inner and outer sides at the top of the return air pipe 9. When the defrosting water droplets in the freezer inner liner 1 fall onto the guide walls 13 of the return air pipe 9, the defrosting water flows along the guide walls 13 into the freezer inner liner 1.

[0034] The guide walls 13 are inclined, and the slope of the guide walls 13 gradually increases along the direction in which the defrosting water flows into the freezer inner liner 1.

[0035] In this embodiment, the return air delivery port 12 has a grid-like structure.

[0036] The top of the return air pipe 9 is connected to the freezer inner liner 1. The return air pipe 9 is connected to the freezer inner liner 1 through a plug-in structure, and a limiting edge 14 that abuts against the outer side of the freezer inner liner 1 is provided on the top of the return air pipe 9.

[0037] The air duct member 3 is positioned and installed on the top of the inner liner 2 of the refrigerator compartment. Ventilation openings are provided at the top of the inner liner 2 of the refrigerator compartment corresponding to the air supply opening 7 and the air return opening 8 of the air duct member 3.

[0038] Two spaced positioning posts 15 are provided on the back of the inner liner 2 of the refrigerator compartment. The air duct member 3 is provided with positioning bosses 16 corresponding to the positioning posts 15. The positioning bosses 16 of the air duct member 3 are positioned and installed between the two positioning posts 15 to form a positioning and installation part between the air duct member 3 and the inner liner 2 of the refrigerator compartment.

[0039] The air duct member 3 is provided with a limiting groove 17. The inner liner 2 of the refrigerator compartment is provided with a limiting boss 18 corresponding to the limiting groove 17. The limiting groove 17 of the air duct member 3 is limited on the limiting boss 18 to form a limiting and installation part between the air duct member 3 and the inner liner 2 of the refrigerator compartment.

[0040] A freezing air duct 19 for accommodating and installing a freezing evaporator 4 is provided between the inner liner 1 of the freezer compartment and the freezer 5. The air outlet of the freezing air duct 19 communicates with the freezer 5. The air inlet of the freezing air duct 19 communicates with the air return opening 8 of the air duct member 3. The air duct member 3 is a foam for the air duct.

[0041] In this embodiment, the bottom of the air duct member 3 is positioned and assembled with the inner liner 2 of the refrigerator compartment. A return air duct 9 is provided on the top of the air duct member 3. The top of the return air duct 9 is positioned and assembled with the inner liner 1 of the freezer compartment.

[0042] In this embodiment, the freezing evaporator 4 is fixed in the freezing air duct 19 by a bracket or the like.

[0043] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An air duct structure for an air-cooled refrigerator, characterized in that: The invention comprises an air duct component (3) which is limitedly installed between a freezer chamber (1) and a refrigerator chamber (2) by a positioning installation part and / or a limiting installation part. The freezer chamber (1) comprises a freezer chamber (5) provided with a freezer evaporator (4), and the refrigerator chamber (2) comprises a refrigerator chamber (6). The air duct component (3) is provided with an air supply port (7) and an air return port (8). The freezer chamber (5) and the refrigerator chamber (6) are connected via the air supply port (7), and the freezer chamber (5) and the refrigerator chamber (6) are connected via the air return port (8). Cold air delivered from the freezer evaporator (4) to the freezer chamber (5) is delivered to the refrigerator chamber (6) via the air supply port (7), and cold air from the refrigerator chamber (6) passes through the freezer evaporator (4) of the freezer chamber (5) via the air return port (8), so as to form a cold air circulation delivery channel between the freezer chamber (5) and the refrigerator chamber (6).

2. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The air duct member (3) is provided with two return air ports (8) spaced apart from each other on the left and right, and the air supply port (7) is located between the two return air ports (8).

3. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The return air port (8) of the air duct member (3) is provided with a return air pipe (9), and the air duct member (3) is provided with a limiting groove portion (10) corresponding to the return air port (8). The return air pipe (9) is inserted into the limiting groove portion (10), and a seal is formed between the return air pipe (9) and the limiting groove portion (10).

4. The air duct structure of the air-cooled refrigerator according to claim 3, characterized in that: A sealing flange edge (11) is provided on the outer side of the return air duct (9) for sealing the assembly gap between the return air duct (9) and the limiting groove portion (10).

5. The air duct structure of the air-cooled refrigerator according to claim 3, characterized in that: The inner shell of the freezing chamber (1) is provided with a connection port corresponding to the top of the return air duct (9), and the top of the return air duct (9) is inserted into the connection port of the inner shell of the freezing chamber (1). The return air duct (9) is located below the freezing evaporator (4). The top of the return air duct (9) is provided with a return air delivery port (12) which connects the freezing chamber (5), the freezing evaporator (4) and the return air port (8). The top of the return air duct (9) is provided with guide walls (13) which form the return air delivery port (12). When the defrosted water in the inner shell of the freezing chamber (1) drips onto the guide wall (13) of the return air duct (9), the defrosted water flows along the guide wall (13) into the inner shell of the freezing chamber (1).

6. The air duct structure of the air-cooled refrigerator according to claim 5, characterized in that: The guide wall (13) is arranged in an inclined manner, and the inclination of the guide wall (13) gradually increases along the direction in which the defrosting water flows into the inner container (1) of the freezing chamber.

7. The air duct structure of the air-cooled refrigerator according to claim 3, characterized in that: The top of the return air duct (9) is connected to the inner container of the freezer chamber (1); the return air duct (9) is connected to the inner container of the freezer chamber (1) via a plug-in structure; and a limiting edge (14) is provided on the top of the return air duct (9) to abut against the outer side of the inner container of the freezer chamber (1).

8. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The air duct member (3) is positioned and installed on the top of the refrigerating chamber inner shell (2), and ventilation holes are provided at the top of the refrigerating chamber inner shell (2) corresponding to the air supply port (7) and the air return port (8) of the air duct member (3); Two spaced-apart positioning columns (15) are provided on the back of the refrigerating chamber inner liner (2); the air duct member (3) is provided with positioning bosses (16) corresponding to the positioning columns (15); the positioning bosses (16) of the air duct member (3) are positioned and installed between the two positioning columns (15) to form a positioning and installation portion between the air duct member (3) and the refrigerating chamber inner liner (2).

9. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: The air duct member (3) is provided with a limiting groove (17), and the refrigerating chamber inner liner (2) is provided with a limiting boss (18) corresponding to the limiting groove (17), and the limiting groove (17) of the air duct member (3) is limited on the limiting boss (18) to form a limiting installation portion between the air duct member (3) and the refrigerating chamber inner liner (2).

10. The air duct structure of the air-cooled refrigerator according to claim 1, characterized in that: A freezing air duct (19) for accommodating and installing a freezing evaporator (4) is provided between the freezing chamber inner liner (1) and the freezing chamber (5); an air outlet of the freezing air duct (19) is connected to the freezing chamber (5); an air inlet of the freezing air duct (19) is connected to an air return port (8) of a duct member (3); and the duct member (3) is a duct foam.

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