Refrigerator air duct

Abstract

The application discloses a refrigerator air duct, and relates to the technical field of refrigerators, which comprises an air duct body, wherein the air duct body comprises a sliding module, the sliding module can slide left and right along the width direction thereof to realize the adjustment of the width of the air duct body; a left sealing module is connected to the left side of the sliding module, a right sealing module is connected to the right side of the sliding module, and a bottom sealing module is arranged at the bottom of the sliding module; the sliding module, the left sealing module, the right sealing module and the bottom sealing module jointly form the air duct body; a vent module for air outlet is further arranged, the vent module penetrates into the sliding module from the back of the sliding module, and the air outlet of the vent module extends from the front side of the sliding module. The traditional air duct is decomposed into different module assemblies, the modular assembly mode is adopted, the universal purpose of the freezing air duct and the refrigerating air duct is realized, the utilization efficiency of the refrigerator assembly is improved, and the development and manufacturing costs of products are greatly saved.

Description

Technical Field

[0001] This invention relates to the field of refrigerator technology, and more specifically to a refrigerator air duct. Background Technology

[0002] Traditional side-by-side frost-free refrigerators have an air duct system consisting of a refrigerator duct and a freezer duct. The freezer duct typically comprises two parts: a lower freezer duct and an upper freezer duct. When the refrigerator is running, a centrifugal fan in the lower freezer duct blows cold air upwards into the upper freezer duct and the refrigerator duct. Because the refrigerator and freezer compartments have different widths, the refrigerator and upper freezer ducts require separate design and molding, making standardization impossible and resulting in high R&D and manufacturing costs. To address these issues, some patents have explored using snap-fit ​​mechanisms to adjust the width of the refrigerator's air ducts, adapting to different refrigerator and freezer compartment sizes. However, this method offers lower adjustment precision and cannot guarantee the airtightness of the refrigerator's air duct system. Summary of the Invention

[0003] The purpose of this invention is to provide a refrigerator air duct that, by decomposing the traditional air duct into different modular components, allows for precise adjustment of the duct size and meets the requirements for the sealing of the refrigerator air duct. This achieves the goal of universalizing the freezer air duct and the refrigerator air duct, thus broadening its application range, improving the utilization efficiency of refrigerator components, and greatly saving product development and manufacturing costs.

[0004] The present invention includes a main body of air duct installed inside a refrigerator body. The main body of air duct includes a sliding module that can slide left and right along its width direction to adjust the width of the main body of air duct. A left sealing module is connected to the left side of the sliding module, a right sealing module is connected to the right side of the sliding module, and a bottom sealing module is provided at the bottom of the sliding module. The sliding module, the left sealing module, the right sealing module, and the bottom sealing module together form the main body of air duct. An air outlet module for air outlet is also provided. The air outlet module enters the sliding module from the back of the sliding module and extends from the front of the sliding module.

[0005] By adopting the above structure, a new type of modular refrigerator air duct is designed, which disassembles the traditional refrigerator air duct structure into different units. Through modular components such as sliding modules, air outlet modules and sealing modules, the air duct can be reorganized. In this respect, the refrigerator air duct can achieve changes in width, thereby meeting the universal use requirements of air ducts of different widths.

[0006] Preferably, the sliding module is formed by inserting a left telescopic block on the left and a right telescopic block on the right; the left telescopic block is provided with a lead screw assembly, and the lead screw assembly is provided with a lead screw kinematic pair; the right telescopic block is provided with a sliding groove at a position corresponding to the lead screw kinematic pair, and the lead screw kinematic pair slides left and right in the sliding groove; a telescopic spring is also provided at the connection between the left and right telescopic blocks.

[0007] Preferably, the right side of the left telescopic block extends out to form a protrusion, and the left side of the right telescopic block is provided with a strip groove for the protrusion to be inserted.

[0008] Preferably, the left and right telescopic blocks are respectively provided with through holes for the air outlet module to pass through, and the size and number of through holes are adapted to the air outlet module.

[0009] Preferably, the left sealing module and the right sealing module have the same structure and are symmetrically arranged on the left and right sides of the sliding module. The right sealing module includes a sealing baffle and a sealing cover located on the sealing baffle.

[0010] Preferably, the bottom sealing module includes a bottom sealing baffle, a bottom sealing cover on the bottom sealing baffle, bottom end caps on the left and right sides of the bottom sealing baffle, the bottom end caps being inserted into the bottom sealing baffle, and a bottom spring at the connection between the bottom sealing baffle and the bottom end caps.

[0011] Preferably, the rear of the sliding module is provided with a sealing sponge, and the sealing sponge has a number of through holes for the air outlet module to pass through, the size and number of the through holes being adapted to the air outlet module.

[0012] In summary, the present invention has the following beneficial effects:

[0013] 1. The brand-new air duct structure modularizes the traditional air duct components, uses a spring structure to achieve size scaling, and uses the air duct guide rail and lead screw motion pair to control the change of the air duct width dimension, thereby achieving the requirement of universality. Compared with the traditional air duct, it greatly saves design and mold opening costs and improves the utilization rate of components.

[0014] 2. The guide rails on the air duct cooperate with the lead screw kinematic pair for limiting. The nearest and farthest ends of the lead screw kinematic pair correspond to the maximum and minimum dimensions of the air duct width, thereby achieving precise control of the air duct dimensions. The spring assists in limiting. Through the compression and relaxation of the spring, it cooperates with the lead screw to realize the contraction and rebound of the air duct panel in the width direction.

[0015] 3. Both the left and right sealing modules contain sealing covers, so that each air duct has two air vents in the left and right directions. Depending on the environment of the cabinet, the opening and closing of the two air vents can be manually adjusted to meet the different opening directions of the air vents in the freezer and freezer chamber. Attached Figure Description

[0016] Figure 1 This is an exploded view of the refrigerator casing.

[0017] Figure 2 This is a sectional view of the rear of the refrigerator body;

[0018] Figure 3 Schematic diagram of the main structure of the air duct in its extended state;

[0019] Figure 4 This is a schematic diagram of the main structure of the air duct in its contracted state.

[0020] Figure 5 This is an exploded view of the main structure of the ventilation duct.

[0021] Figure 6 Exploded view of the sliding module;

[0022] Figure 7 This is a cross-sectional view of the sliding module;

[0023] Figure 8 This is a schematic diagram of the right sealing module structure;

[0024] Figure 9 Exploded view of the bottom sealing module;

[0025] Figure 10 This is a schematic diagram of the lead screw assembly structure;

[0026] Figure 11 This is a schematic diagram of the air vent module structure;

[0027] Figure 12 This is a schematic diagram of the operation of the lead screw assembly;

[0028] Figure 13 This is a schematic diagram of the operation of a telescopic spring. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] The orientations mentioned in this specification are based on the orientation of the refrigerator air duct of the present invention during normal operation, and do not limit the orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0031] like Figures 1 to 13As shown, a refrigerator air duct includes a refrigerator body. The internal space of the refrigerator body is divided into two compartments, a freezer compartment 100 on the left and a refrigerator compartment 200 on the right. A freezer air duct 500 is installed inside the freezer compartment 100, and a refrigerator air duct 400 is installed inside the refrigerator compartment 200. An air source air duct 600 is provided below the freezer air duct 500. A middle channel foam 300 is provided between the freezer air duct 500 and the freezer air duct 400. When the refrigerator is running normally, the centrifugal fan in the air source air duct 600 rotates and drives cold air into the refrigerator air duct 400 and the freezer air duct 500 to cool the refrigerator.

[0032] The refrigerated air duct 400 and the frozen air duct 500 have the same structure, which are different states of the same air duct body. The air duct body includes a sliding module 450, which can slide left and right along its width direction to adjust the width of the air duct body. A left sealing module 480 is connected to the left side of the sliding module 450, a right sealing module 440 is connected to the right side of the sliding module 450, and a bottom sealing module 490 is provided at the bottom of the sliding module 450. The sliding module 450, the left sealing module 480, the right sealing module 440, and the bottom sealing module 490 together form the air duct body. An air outlet module 460 is also provided. The air outlet module 460 is inserted into the sliding module 450 from the back and extends out from the front side of the sliding module 450. The air outlet module 460 is used to embed into the sliding module 450 after the sliding module 450 is resized to form an air outlet of the air duct.

[0033] Furthermore, the sliding module 450 includes a left telescopic block 453 located on the left side and a right telescopic block 451 located on the right side. The right side of the left telescopic block 453 extends out to form a protrusion, and the left side of the right telescopic block 451 is provided with a strip groove for the protrusion to be inserted. The left telescopic block 453 is inserted into the right telescopic block 451. The left telescopic block 453 is provided with a lead screw assembly 454, and the lead screw assembly 454 is provided with a lead screw kinematic pair 455. The right telescopic block 451 is provided with a sliding groove at a position corresponding to the lead screw kinematic pair 455 for the lead screw kinematic pair 455 to slide left and right. By rotating the lead screw assembly 454 by external force, the lead screw kinematic pair 455 is driven to move in the sliding groove, thereby adjusting the distance between the left telescopic block 453 and the right telescopic block 451, thereby adjusting the width of the sliding module 450.

[0034] A telescopic spring 452 is also provided at the connection between the left telescopic block 453 and the right telescopic block 451. The telescopic spring 452 is located in the strip groove of the right telescopic block 451. When the kinematic pair is at the starting point, the air duct width is at its minimum and the telescopic spring 452 is at its maximum compression. When the lead screw kinematic pair 455 is at its farthest end, the telescopic spring 452 is at its longest extension, and the air duct width is at its maximum. By using the nearest and farthest ends of the lead screw kinematic pair 455 to correspond to the minimum and maximum dimensions of the air duct body width, precise control of the width direction of the air duct body can be achieved. The telescopic spring 452 assists in the limiting function. Through the compression and expansion of the telescopic spring 452, in conjunction with the lead screw assembly 454, the air duct body can be contracted and rebounded in the width direction.

[0035] Furthermore, the left telescopic block 453 and the right telescopic block 451 are respectively provided with through holes for the air outlet module 460 to pass through, and the size and number of through holes are adapted to the air outlet module 460.

[0036] Furthermore, the left sealing module 480 and the right sealing module 440 have the same structure and are symmetrically arranged on the left and right sides of the sliding module 450. The right sealing module 440 includes a sealing baffle 441 and a sealing cover 442 located on the sealing baffle 441. One side of the sealing baffle 441 is bent backward and together with the bottom sealing module 490 and the sliding module 450, it forms a rear-opening air duct body. A connecting plate is provided on the other side of the sealing baffle 441, and a threaded hole is provided on the connecting plate. The sealing baffle 441 is fixed to the sliding module 450 with screws. The sealing cover 442 is used to adjust the opening and closing requirements of the air vents in the refrigerator liner 200 and the freezer liner 100 of the air duct body, and can be manually opened and closed as needed.

[0037] Furthermore, the bottom sealing module 490 includes a bottom sealing baffle 492, a bottom sealing cover 491 on the bottom sealing baffle 492, and bottom end covers 494 on the left and right sides of the bottom sealing baffle 492. The bottom end covers 494 are inserted into the bottom sealing baffle 492. A bottom spring 493 is provided at the connection between the bottom sealing baffle 492 and the bottom end covers 494. Due to the need for size changes, the bottom sealing module 490 can be scaled in the width direction on both sides through two bottom springs 493 and two bottom end covers 494. After scaling, it is embedded into the air duct body and fixed with screws.

[0038] Furthermore, the rear of the sliding module 450 is provided with a sealing sponge 470, which has several through holes for the air outlet module 460 to pass through. The size and number of the through holes are adapted to the air outlet module 460. After the air duct body is installed with the refrigerator liner, the sealing sponge 470 contacts the liner and seals against the protrusion on the back of the liner. The ribs together form an internal air passage for the air duct, reducing the possibility of cold air leakage.

[0039] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A refrigerator air duct, comprising an air duct body installed inside the refrigerator body, characterized in that: The main body of the air duct includes a sliding module (450), which can slide left and right along its width direction to adjust the width of the main body of the air duct; a left sealing module (480) is connected to the left side of the sliding module (450), a right sealing module (440) is connected to the right side of the sliding module (450), and a bottom sealing module (490) is provided at the bottom of the sliding module (450). The sliding module (450), the left sealing module (480), the right sealing module (440) and the bottom sealing module (490) together form the main body of the air duct; an air outlet module (460) for air outlet is also provided, which enters the sliding module (450) from the back and extends from the front of the sliding module (450); The sliding module (450) is formed by connecting a left telescopic block (453) on the left side and a right telescopic block (451) on the right side; the left telescopic block (453) is provided with a lead screw assembly (454), and the lead screw assembly (454) is provided with a lead screw kinematic pair (455); the right telescopic block (451) is provided with a sliding groove at a position corresponding to the lead screw kinematic pair (455), and the lead screw kinematic pair (455) slides left and right in the sliding groove; a telescopic spring (452) is also provided at the connection between the left telescopic block (453) and the right telescopic block (451).

2. A refrigerator air duct as described in claim 1, characterized in that: The right side of the left telescopic block (453) extends out to form a protrusion, and the left side of the right telescopic block (451) is provided with a strip groove for the protrusion to be inserted.

3. A refrigerator air duct as described in claim 1, characterized in that: The left telescopic block (453) and the right telescopic block (451) are respectively provided with through holes for the air vent module (460) to pass through, and the size and number of the through holes are adapted to the air vent module (460).

4. A refrigerator air duct as described in claim 1, characterized in that: The left sealing module (480) and the right sealing module (440) have the same structure and are symmetrically arranged on the left and right sides of the sliding module (450). The right sealing module (440) includes a sealing baffle (441) and a sealing cover (442) located on the sealing baffle (441).

5. A refrigerator air duct as described in claim 1, characterized in that: The bottom sealing module (490) includes a bottom sealing baffle (492), a bottom sealing cover (491) is provided on the bottom sealing baffle (492), bottom end caps (494) are provided on the left and right sides of the bottom sealing baffle (492), the bottom end caps (494) are inserted into the bottom sealing baffle (492), and a bottom spring (493) is provided at the connection between the bottom sealing baffle (492) and the bottom end caps (494).

6. A refrigerator air duct as described in claim 1, characterized in that: The rear of the sliding module (450) is provided with a sealing sponge (470), and the sealing sponge (470) is provided with a plurality of through holes for the air outlet module (460) to pass through. The size and number of the through holes are adapted to the air outlet module (460).

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