Air duct structure of refrigerated cabinet

Abstract

The utility model discloses an air duct structure of a refrigerated cabinet, which comprises a cabinet body and an inner container, a cavity is formed between the outer side wall of the inner container and the inner side of the cabinet body, and an air duct assembly is arranged in the cavity; the air duct assembly comprises a first ventilation pipe, a second ventilation pipe, a movable ring and a motor. Wherein the first ventilation pipes are located in the cavity and are arranged at intervals in the vertical direction, a plurality of sets of air outlets are formed in one side of the inner container at intervals in the vertical direction, the air outlets and the first ventilation pipes are communicated in a one-to-one correspondence mode, and the second ventilation pipes are communicated among the first ventilation pipes. The cross section of an inner cavity of the second ventilation pipe is circular, the movable ring is rotationally arranged in the inner cavity of the second ventilation pipe in a concentric shaft mode, a plurality of ventilation holes are formed in one side of the movable ring in the vertical direction at intervals in a penetrating mode, and the ventilation holes are distributed in a staggered mode in the circumferential direction with the center of the movable ring as the circle center; the motor is arranged at one end of the second ventilation pipe to drive the movable ring to rotate.

Description

Technical Field

[0001] This utility model specifically relates to an air duct structure for a refrigerator. Background Technology

[0002] In existing refrigerated display cases, the design of the air duct structure plays a crucial role in the cooling effect and temperature uniformity. Traditional refrigerated display cases typically use a fixed ventilation duct layout, resulting in a relatively uniform distribution of cold air within the cabinet. This makes it difficult to flexibly adjust the airflow method and range according to actual usage needs. This fixed air duct structure can easily lead to significant temperature differences between different areas within the refrigerated display case. Especially when many items are stored in the refrigerated display case, the cold air cannot effectively reach all corners of the cabinet, thus affecting the cooling effect and potentially causing items in some areas to spoil due to unsuitable temperatures. Utility Model Content

[0003] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide an air duct structure for a refrigerator.

[0004] A refrigerated display case air duct structure includes a cabinet body and an inner liner, wherein a cavity is formed between the outer wall of the inner liner and the inner side of the cabinet body, and an air duct assembly is provided in the cavity.

[0005] The air duct assembly includes a first ventilation duct, a second ventilation duct, a movable ring, and a motor. The first ventilation duct comprises several units, arranged vertically at intervals within a cavity. Several sets of air outlets are vertically spaced along one side of the inner liner, each set corresponding to and connected to one of the first ventilation ducts. The second ventilation duct connects to the first ventilation ducts, and its inner cavity has a circular cross-section. The movable ring is rotatably mounted within the inner cavity of the second ventilation duct, and several ventilation holes are vertically spaced along one side of the movable ring, staggered around the center of the movable ring. The motor is located at one end of the second ventilation duct to drive the movable ring to rotate, thereby connecting the ventilation holes sequentially to the inner cavity of the inner liner via the first ventilation ducts.

[0006] In one embodiment, the air duct assembly has two parts, which are respectively distributed on both sides of the inner liner.

[0007] In one embodiment, the movable rings in the two air duct assemblies are respectively divided into movable ring one and movable ring two. When the ventilation hole located at the upper part of movable ring one is connected to the inner cavity of the inner liner, the ventilation hole located at the lower part of movable ring two is connected to the inner cavity of the inner liner.

[0008] In one embodiment, an air duct is formed between the top wall of the inner liner and the inner top surface of the cabinet. Several air inlets communicating with the air duct are opened through the top of the inner liner. An evaporator is provided in the air duct, and one end of the second ventilation pipe is connected to the air duct.

[0009] In one embodiment, a fan is provided at the connection between the second ventilation duct and the air duct, and the fan is used to transport the airflow in the air duct to the second ventilation duct.

[0010] In one embodiment, both the second ventilation duct and the outer wall of the first ventilation duct are provided with an insulation layer, which is made of polyurethane foam material.

[0011] In summary, the advantages of this utility model over the prior art are:

[0012] This invention utilizes an air duct assembly consisting of a first ventilation duct, a second ventilation duct, a movable ring, and a motor. The rotation of the movable ring allows several ventilation holes to connect sequentially to the inner cavity of the refrigerator liner via the first ventilation duct, achieving flexible and varied cold air delivery within the refrigerator liner. Users can adjust the connection between the ventilation holes and the first ventilation duct by driving the movable ring with the motor, based on the stored items and different refrigeration needs. This alters the direction and distribution of cold air, effectively improving temperature uniformity within the refrigerator and preventing excessive localized temperature differences from negatively impacting refrigeration performance. Attached Figure Description

[0013] Figure 1 This is one of the cross-sectional views of the air duct structure of a refrigerator according to one embodiment of the present invention;

[0014] Figure 2 This is a second cross-sectional view of the air duct structure of a refrigerator in one embodiment of the present invention;

[0015] Figure 3 This is a three-dimensional schematic diagram of the air duct structure of a refrigerator according to one embodiment of the present invention;

[0016] Figure 4 This is a three-dimensional schematic diagram of the movable ring in one embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0018] like Figures 1 to 4The present invention preferably provides an air duct structure for a refrigerator, including a cabinet body 1 and an inner liner 2. A cavity is formed between the outer wall of the inner liner 2 and the inner side of the cabinet body 1. An air duct assembly 3 is provided in the cavity. The air duct assembly 3 includes a first ventilation pipe 31, a second ventilation pipe 33, a movable ring 34, and a motor 35. Several first ventilation pipes 31 are provided, located within the cavity and arranged vertically at intervals. Several sets of air outlets 36 are arranged vertically at intervals on one side of the inner liner 2, with each set of air outlets 36 corresponding to one of the first ventilation pipes 31. The second ventilation pipe 33 is connected to several first ventilation pipes 31, and the cross-section of the inner cavity of the second ventilation pipe 33 is circular. The movable ring 34 is rotatably disposed in the inner cavity of the second ventilation pipe 33 with the same central axis. Several ventilation holes 37 are vertically spaced through one side of the movable ring 34, and the ventilation holes 37 are staggered around the center of the movable ring 34. The motor 35 is disposed at one end of the second ventilation pipe 33 to drive the movable ring 34 to rotate. The rotation of the movable ring 34 causes the ventilation holes 37 to be connected to the inner cavity of the inner liner 2 through the first ventilation pipes 31 in sequence.

[0019] Specifically, by setting up an air duct assembly consisting of a first ventilation duct, a second ventilation duct, a movable ring, and a motor, the rotation of the movable ring allows several ventilation holes to connect sequentially to the inner cavity of the refrigerator liner via the first ventilation duct, achieving flexible and variable airflow within the refrigerator liner. Users can adjust the connection between the ventilation holes and the first ventilation duct by driving the movable ring with the motor, according to the storage conditions of the items in the refrigerator and different refrigeration needs. This changes the direction and distribution of cold air, effectively improving the temperature uniformity within the refrigerator and preventing excessive local temperature differences from affecting the refrigeration effect.

[0020] Furthermore, the air duct assembly 3 has two parts, which are respectively distributed on both sides of the inner liner 2. Furthermore, the movable rings 34 in the two air duct assemblies 3 are respectively divided into movable ring one 38 and movable ring two 39. When the ventilation hole 37 located at the upper part of movable ring one 38 is connected to the inner cavity of the inner liner 2, the ventilation hole 37 located at the lower part of movable ring two 39 is connected to the inner cavity of the inner liner 2.

[0021] Specifically, the air duct assembly is set to two and distributed on both sides of the inner liner. At the same time, the movable ring one and movable ring two in the two air duct assemblies cooperate. When the ventilation hole at the upper part of movable ring one is connected to the inner cavity of the inner liner, the ventilation hole at the lower part of movable ring two is connected to the inner cavity of the inner liner. This symmetrical and staggered air supply design further optimizes the circulation path of cold air in the inner liner, so that the cold air can cover all areas in the inner liner more comprehensively and quickly, significantly improving the cooling efficiency and cooling effect of the refrigerator.

[0022] Furthermore, an air duct 21 is formed between the top wall of the inner liner 2 and the inner top surface of the cabinet 1. Several air inlets 22 communicating with the air duct 21 are opened through the top of the inner liner 2. An evaporator (not shown in the figure) is installed inside the air duct 21. One end of the second ventilation pipe 33 is connected to the air duct 21. Furthermore, a fan 23 is installed at the connection between the second ventilation pipe 33 and the air duct 21, and the fan 23 is used to transport the airflow in the air duct 21 to the second ventilation pipe 33.

[0023] Specifically, an air duct is formed between the top wall of the inner liner and the top surface of the cabinet interior, and an evaporator is installed within the air duct. A fan is also installed at the connection between the second ventilation duct and the air duct. This structural design creates a highly efficient system for the generation, delivery, and circulation of cold air. The fan efficiently delivers the cold air generated by the evaporator within the air duct to the second ventilation duct, and then evenly distributes it into the inner liner through the air duct assembly. This reduces energy loss during airflow, lowers the operating energy consumption of the refrigerator, and meets energy conservation and environmental protection requirements.

[0024] In actual use, users can adjust the connection between the ventilation holes and the first ventilation duct by controlling the motor to rotate the movable ring, based on the items stored in the refrigerator, thereby changing the direction and distribution of cold air. For example, when there are more items stored in the upper layer of the refrigerator, the motor can rotate the movable ring to connect more ventilation holes with the corresponding first ventilation duct in the upper layer, allowing more cold air to blow into the upper area and ensuring the refrigeration effect of the items in the upper layer.

[0025] Furthermore, the outer walls of the second ventilation duct 33 and the first ventilation duct 31 are each provided with an insulation layer, which is made of polyurethane foam material.

[0026] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wind channel structure of a refrigeration cabinet comprising a cabinet body (1) and an inner liner (2), characterized in that: A cavity is formed between the outer wall of the inner liner (2) and the inner side of the cabinet (1), and an air duct assembly (3) is provided in the cavity; The air duct assembly (3) includes a first ventilation pipe (31), a second ventilation pipe (33), a movable ring (34), and a motor (35); wherein, there are several first ventilation pipes (31), which are located in the cavity and arranged vertically at intervals, and several sets of air outlets (36) are arranged vertically at intervals on one side of the inner liner (2), and the several sets of air outlets (36) are connected to the several first ventilation pipes (31) one by one, and the second ventilation pipe (33) is connected between the several first ventilation pipes (31), and the second ventilation pipe (33) is connected to the first ventilation pipes (31). The inner cavity has a circular cross-section. The movable ring (34) is rotatably arranged in the inner cavity of the second ventilation pipe (33) with the same central axis. Several ventilation holes (37) are opened vertically at intervals on one side of the movable ring (34). The ventilation holes (37) are arranged in a staggered manner around the center of the movable ring (34). The motor (35) is located at one end of the second ventilation pipe (33) to drive the movable ring (34) to rotate. The rotation of the movable ring (34) allows the ventilation holes (37) to be connected to the inner cavity of the inner liner (2) in sequence through the first ventilation pipe (31).

2. The air duct structure of a refrigeration cabinet according to claim 1, characterized in that: The air duct assembly (3) has two parts, which are respectively distributed on both sides of the inner liner (2).

3. The air duct structure of a refrigeration cabinet according to claim 1, characterized in that: The movable rings (34) in the two air duct components (3) are divided into movable ring one (38) and movable ring two (39). When the ventilation hole (37) located at the upper part of movable ring one (38) is connected to the inner cavity of the inner liner (2), the ventilation hole (37) located at the lower part of movable ring two (39) is connected to the inner cavity of the inner liner (2).

4. The air duct structure of a refrigeration cabinet according to claim 1, characterized in that: An air duct (21) is formed between the top wall of the inner liner (2) and the inner top surface of the cabinet (1). Several air inlets (22) connected to the air duct (21) are opened through the top of the inner liner (2). An evaporator is provided in the air duct (21). One end of the second ventilation pipe (33) is connected to the air duct (21).

5. The air duct structure of a refrigeration cabinet according to claim 1, characterized in that: A fan (23) is provided at the connection between the second ventilation pipe (33) and the air duct (21) to transport the airflow in the air duct (21) to the second ventilation pipe (33).

6. The air duct structure of a refrigeration cabinet according to claim 1, characterized in that: The outer walls of the second ventilation pipe (33) and the first ventilation pipe (31) are respectively provided with insulation layers, which are made of polyurethane foam material.

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