Air door sealing structure capable of preventing air leakage

Abstract

The utility model discloses an air leakage prevention air door sealing structure which comprises an upper air door cover plate and a lower air door cover plate which are buckled up and down, the upper air door cover plate and the lower air door cover plate are buckled with each other to form an air door sealing cavity, and the abutting faces of the two longitudinal sides of the lower air door cover plate are stepped faces A; the abutting surfaces on the two longitudinal sides of the upper air door cover plate are stepped surfaces B, and the stepped surfaces A and the stepped surfaces B abut against each other and are attached to each other; sealing grooves formed in the longitudinal direction of the lower air door cover plate are formed in the stepped surfaces A, are of stepped groove structures and longitudinally penetrate through the lower air door cover plate; sealing protrusions matched with the sealing grooves are arranged at the positions, corresponding to the sealing grooves, of the step face B. The air door sealing structure has the advantages that air leakage between the upper air door cover plate and the lower air door cover plate is prevented, the structure is simple, the situation that the temperature of a refrigerating chamber of a refrigerator is interfered due to air leakage of the air door sealing structure is avoided, and the refrigerating performance of the refrigerating chamber of the refrigerator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator air doors, in particular to an air door sealing structure for preventing air leakage. Background Art

[0002] Air-cooled refrigerators are currently mainstream products. Single-system air-cooled refrigerators have two compartments: a freezer and a refrigerator. A damper is set between the freezer and refrigerator. The refrigeration fan sends the cold air from the freezer to the refrigerator through the refrigerator damper, achieving the purpose of cooling the refrigerator. Therefore, the consistency of this air volume is crucial to the consistency of the overall performance of the refrigerator. The core technology of air-cooled refrigerators is to control the amount of cold air in each compartment. The accuracy of air outlet and return air is directly related to the refrigeration performance of air-cooled refrigerators. At present, the external structure of the damper in the air-cooled refrigerator industry is made of two pieces of butt-jointed foam materials. The two foam material structures are butt-jointed and wrapped around the damper, and the freezer and refrigerator compartments are separated at the front and rear ends of the damper. Patent publication number CN220689491U discloses an air duct assembly of a refrigerator, in which the damper is wrapped and sealed by an upper duct cover plate and a lower duct cover plate. The butt joint surface of the upper duct cover plate and the lower duct cover plate is a plane. However, since the tolerance of the two foam butt joint surfaces cannot be zero, there is a problem that cold air will leak out to varying degrees along the longitudinal direction or the lateral direction of the butt joint surface of the upper duct cover plate and the lower duct cover plate, which will interfere with the temperature of the refrigerator compartment, cause ice to form in the refrigerator refrigerator compartment, and reduce the refrigeration performance of the refrigerator freezer compartment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a damper sealing structure for preventing air leakage, which can prevent air leakage in the lateral and longitudinal directions between the abutting surfaces of the upper damper cover plate and the lower damper cover plate. The structure is simple, the processing is convenient, and the cost is low. The temperature of the refrigerator refrigerator compartment is prevented from being disturbed by air leakage from the damper sealing structure, which causes the refrigerator compartment to freeze, while the refrigeration performance of the refrigerator freezer compartment is improved, and the problems in the background technology can be effectively solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a damper sealing structure for preventing air leakage, comprising an upper damper cover plate and a lower damper cover plate that are buckled together, the upper damper cover plate and the lower damper cover plate are buckled together to form a damper sealing cavity, the abutting surfaces on both sides of the lower damper cover plate on the longitudinal direction are both step surfaces A, the abutting surfaces on both sides of the upper damper cover plate on the longitudinal direction are both step surfaces B, and the step surfaces A and the step surfaces B abut and fit each other; the step surfaces A are each provided with a sealing groove arranged along the longitudinal direction of the lower damper cover plate, the sealing grooves are all step groove structures and longitudinally penetrate the lower damper cover plate; the step surfaces B are each provided with sealing protrusions that match the sealing grooves at the positions corresponding to the sealing grooves; the side walls on both sides of the damper sealing cavity are respectively provided with air inlets and air outlets.

[0005] Furthermore, an air inlet slot 1 and an air outlet slot 1 are respectively opened on the side walls on both sides of the lower air door cover plate, and an air inlet slot 2 and an air outlet slot 2 are respectively opened on the side walls on both sides of the upper air door cover plate, and the air inlet slot 1 and the air inlet slot 2 are fitted together to form an air inlet, and the air outlet slot 1 and the air outlet slot 2 are fitted together to form an air outlet.

[0006] Furthermore, the lower air door cover plate and the upper air door cover plate are both made of foam material.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: the air door sealing structure for preventing air leakage can seal the abutting surface between the upper air door cover plate and the lower air door cover plate through the slot inlay structure formed by the sealing groove and the sealing protrusion, thereby preventing lateral air leakage from occurring between the abutting surfaces of the upper air door cover plate and the lower air door cover plate, and can prevent longitudinal air leakage from occurring between the abutting surfaces of the upper air door cover plate and the lower air door cover plate through the secondary slot inlay structure formed by the step surface A and the step surface B; the structure is simple, the processing is convenient, the cost is low, and the freezing of the refrigerator compartment caused by the interference of air leakage of the air door sealing structure with the temperature of the refrigerator compartment can be avoided, while the refrigeration performance of the refrigerator freezer compartment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 This is an axonometric diagram of the air door sealing structure of the utility model;

[0010] Figure 3 This is an exploded schematic diagram of the air door sealing structure of the utility model;

[0011] Figure 4 This is a schematic diagram of the structure of the upper air door cover plate of the utility model.

[0012] In the figure: 1. Lower air door cover; 11. Step surface A; 12. Sealing groove; 13. Air inlet notch 1; 14. Air outlet notch 1; 2. Upper air door cover; 21. Step surface B; 22. Sealing protrusion; 23. Air inlet notch 2; 24. Air outlet notch 2; 3. Air inlet; 4. Air outlet; 5. Refrigerator air door. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0014] See also Figure 1-4 The utility model provides a technical solution: a damper sealing structure for preventing air leakage, comprising an upper damper cover plate 2 and a lower damper cover plate 1 which are buckled together, the upper damper cover plate 2 and the lower damper cover plate 1 are buckled together to form a damper sealing cavity, the abutting surfaces on both sides of the longitudinal direction of the lower damper cover plate 1 are both step surfaces A11, the abutting surfaces on both sides of the longitudinal direction of the upper damper cover plate 2 are both step surfaces B21, and the step surfaces A11 and the step surfaces B21 are abutted and fitted with each other; the step surfaces A11 are each provided with a sealing groove 12 arranged along the longitudinal direction of the lower damper cover plate 1, and the sealing groove 1 2 are both stepped groove structures and penetrate the lower air door cover plate 1 longitudinally; the stepped surface B21 is provided with a sealing protrusion 22 matched therewith at the position corresponding to the sealing groove 12; the side walls on both sides of the lower air door cover plate 1 are respectively provided with an air inlet notch 13 and an air outlet notch 14, and the side walls on both sides of the upper air door cover plate 2 are respectively provided with an air inlet notch 23 and an air outlet notch 24, and the air inlet notch 13 and the air inlet notch 23 are fitted together to form an air inlet 3, and the air outlet notch 14 and the air outlet notch 24 are fitted together to form an air outlet 4.

[0015] Furthermore, the lower air door cover plate 1 and the upper air door cover plate 2 are both made of foam material.

[0016] When in use: the refrigerator damper 5 is placed in the damper sealing cavity formed by the upper damper cover plate 2 and the lower damper cover plate 1 buckled together, and the upper damper cover plate 2 and the lower damper cover plate 1 wrap and seal the refrigerator damper 5, the step surface A11 and the step surface B21 correspond to the position of the circumferential side wall of the refrigerator damper 5, and a layer of foam is adhered to the circumferential outer wall of the refrigerator damper 5 to increase its sealing performance, and the air inlet 3 and the air outlet 4 are controlled by opening and closing the refrigerator damper 5. The opening and closing of the airflow between the upper and lower air door cover plates 2 and 1 can be prevented by the slot inlay structure formed by the sealing groove 12 and the sealing protrusion 22 to transversely seal the abutting surface between the upper and lower air door cover plates 2 and 1, and transverse air leakage between the abutting surfaces of the upper and lower air door cover plates 2 and 1 can be prevented. The secondary slot inlay structure formed by the step surface A11 and the step surface B21 can prevent longitudinal air leakage between the abutting surfaces of the upper and lower air door cover plates 2 and 1 at the refrigerator air door 5.

[0017] The air door sealing structure for preventing air leakage disclosed in the present embodiment performs transverse sealing on the abutting surface between the upper air door cover plate 2 and the lower air door cover plate 1 through a slot embedding structure formed by a sealing groove 12 and a sealing protrusion 22, thereby preventing transverse air leakage between the abutting surfaces of the upper air door cover plate 2 and the lower air door cover plate 1, and preventing longitudinal air leakage between the abutting surfaces of the upper air door cover plate 2 and the lower air door cover plate 1 at the refrigerator air door 5 through a secondary slot embedding structure formed by a step surface A11 and a step surface B21; the structure is simple, the processing is convenient, and the cost is low.

[0018] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damper sealing structure for preventing air leakage, comprising an upper damper cover plate and a lower damper cover plate buckled together, the upper damper cover plate and the lower damper cover plate buckled together to form a damper sealing cavity, characterized in that: The abutting surfaces on both sides of the lower air door cover plate in the longitudinal direction are both step surfaces A, and the abutting surfaces on both sides of the upper air door cover plate in the longitudinal direction are both step surfaces B, and the step surfaces A and the step surfaces B abut and fit each other; the step surfaces A are each provided with a sealing groove arranged along the longitudinal direction of the lower air door cover plate, and the sealing grooves are all step groove structures and longitudinally penetrate the lower air door cover plate; the step surfaces B are each provided with a sealing protrusion matched with the sealing groove at the position corresponding to the sealing groove; the side walls on both sides of the air door sealing cavity are respectively provided with an air inlet and an air outlet.

2. A damper sealing structure for preventing air leakage according to claim 1, characterized in that: The side walls on both sides of the lower air door cover are respectively provided with an air inlet notch 1 and an air outlet notch 1, and the side walls on both sides of the upper air door cover are respectively provided with an air inlet notch 2 and an air outlet notch 2, and the air inlet notch 1 and the air inlet notch 2 are fitted together to form an air inlet, and the air outlet notch 1 and the air outlet notch 2 are fitted together to form an air outlet.

3. The air door sealing structure for preventing air leakage according to claim 1, characterized in that: The lower air door cover plate and the upper air door cover plate are both made of foam material.

Images