In-cabin refrigerator inner circulation structure

Abstract

The application relates to an in-circulation structure of a vehicle-mounted refrigerator and relates to the technical field of the refrigerator. The in-circulation structure of the vehicle-mounted refrigerator comprises a frame body and a drawer, the drawer is slidably connected to the frame body, an air duct is formed between the outer wall of the drawer and the inner wall of the frame body, ventilation grids are arranged on the rear end wall and the side wall of the drawer, a centrifugal fan is fixedly installed on the rear inner wall of the frame body, the centrifugal fan is provided with an air outlet and an air inlet, the airflow output by the air outlet is guided to the ventilation grid of the side wall of the drawer through the air duct, enters the inner cavity of the drawer through the ventilation grid of the rear end wall of the drawer, and then enters the air inlet from the inner cavity of the drawer through the ventilation grid of the rear end wall of the drawer to form a three-dimensional circulation airflow. The application has the effects of good refrigeration effect, convenient installation and convenient maintenance.

Description

Technical Field

[0001] This application relates to the technical field of refrigerators, and in particular to an internal circulation structure for a vehicle-mounted refrigerator. Background Technology

[0002] With the development of the automotive industry and the improvement of people's living standards, car refrigerators, as devices that enhance driving comfort and convenience, are becoming increasingly common in various passenger vehicles. Car refrigerators are usually installed between the front and rear seats, in the trunk, or in front of the front passenger seat, and are used to refrigerate beverages, fruits, and other items.

[0003] Currently, most mainstream car refrigerators on the market adopt a single-side door opening structure, with the refrigerator fixedly installed in the rear space of the vehicle (such as behind the center armrest). This design primarily serves rear passengers, allowing them to easily open the refrigerator door located to their side and retrieve items. However, for front-seat occupants, they need to turn around and reach behind to reach the refrigerator door handle and pull the door open, which is difficult to operate and poses a safety hazard. To address the inconvenience for front-seat passengers, some designs have emerged with openings on the top of the refrigerator for them to access items. However, these openings encroach on the space available for the top cooling system piping, restricting the cooling system layout, reducing heat dissipation efficiency, and ultimately worsening the overall cooling performance of the refrigerator. Utility Model Content

[0004] To address the issue that openings at the top of vehicle refrigerators reduce their cooling efficiency, this application provides an internal circulation structure for vehicle refrigerators.

[0005] The technical solution for the internal circulation structure of a vehicle-mounted refrigerator provided in this application is as follows: An internal circulation structure for a vehicle refrigerator includes a cabinet and a drawer. The cabinet includes a frame, and the drawer is slidably connected to the frame. An air duct is formed between the outer wall of the drawer and the inner wall of the frame. Ventilation meshes are provided on the rear end wall and side walls of the drawer. A centrifugal fan is fixedly installed on the rear inner wall of the frame. The centrifugal fan has an air outlet and an air inlet. The airflow output from the air outlet is guided through the air duct to the ventilation mesh on the side wall of the drawer, then through the ventilation mesh on the rear end wall of the drawer into the inner cavity of the drawer, and then from the inner cavity of the drawer through the ventilation mesh on the rear end wall of the drawer into the air inlet to form a three-dimensional circulating airflow.

[0006] By adopting the above technical solution, the gap between the outer wall of the drawer and the inner wall of the frame forms an air duct. A centrifugal fan is installed on the rear inner wall of the frame. The centrifugal fan drives the airflow from the air outlet into the air duct, through the ventilation mesh on the drawer side wall into the drawer cavity, and then from the drawer cavity back to the air inlet through the ventilation mesh at the rear of the drawer, thus forming a three-dimensional circulation path, increasing the heat exchange area, achieving uniform distribution of cold energy inside the drawer, and significantly improving the cooling efficiency.

[0007] Preferably, the centrifugal fan includes at least two air outlets, including an upper air outlet and at least one side air outlet.

[0008] Preferably, the upper air outlet and the side air outlet are distributed circumferentially around the air inlet on the outer periphery of the air inlet.

[0009] Preferably, the upper air outlet is located directly above the air inlet, and the side air outlet includes a left air outlet and a right air outlet, which are located directly to the left and right of the air inlet, respectively.

[0010] Preferably, the upper air outlet faces upward, the left and right air outlets face the same direction as the air inlet, and the air inlet faces the ventilation mesh on the rear wall of the drawer.

[0011] Preferably, the ventilation mesh on the rear wall of the drawer is an exhaust mesh, the exhaust mesh is circularly distributed, and the air inlet is circular.

[0012] Preferably, ventilation mesh is provided on both sides of the drawer, and the ventilation mesh on both sides of the drawer is an air inlet mesh.

[0013] Preferably, the centrifugal fan includes a housing and a fan body, the fan body being installed inside the housing, the housing including an upper housing and a lower housing, the upper housing and the lower housing being detachably connected.

[0014] Preferably, the upper housing is provided with a buckle, and the lower housing is provided with a slot for the buckle to engage.

[0015] Preferably, the housing includes a mounting part and a guide pipe. The mounting part is used to fix the fan body. The air inlet is opened on the mounting part. The air outlet is located at the end of the guide pipe away from the mounting part. The guide pipe is used to guide airflow from the air outlet into the air duct.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. Significantly improved cooling performance: The mechanical gap between the outer wall of the drawer and the inner wall of the frame forms an air duct, which does not take up space in the layout of the cooling system, ensuring heat dissipation efficiency. The three-dimensional circulating airflow achieves uniform distribution of cold air inside the drawer, significantly improving cooling efficiency.

[0017] 2. The structure is compact and highly reliable. The integrated design of the air duct and drawer saves space and adapts to the limitations of the vehicle environment. The centrifugal fan is installed between the drawer and the frame without taking up additional storage space.

[0018] 3. Easy to install and maintain. The centrifugal fan housing is detachable. The housing and fan body can be assembled by simple snap-fit. The fan body can be removed for easy cleaning and maintenance. Attached Figure Description

[0019] Figure 1 This is an exploded schematic diagram of the internal circulation structure of the vehicle-mounted refrigerator in the embodiments of this application.

[0020] Figure 2 This is another exploded schematic diagram of the internal circulation structure of the vehicle refrigerator in this application embodiment.

[0021] Figure 3 This is a partial structural schematic diagram of the internal circulation structure of the vehicle-mounted refrigerator in an embodiment of this application.

[0022] Figure 4 This is another partial structural schematic diagram of the internal circulation structure of the vehicle refrigerator in this application embodiment.

[0023] Figure 5 This is another exploded schematic diagram of the internal circulation structure of the vehicle refrigerator in this application embodiment.

[0024] Figure 6 This is another partial structural schematic diagram of the internal circulation structure of the vehicle refrigerator in this application embodiment.

[0025] Figure 7 This is an exploded schematic diagram of the centrifugal fan in the internal circulation structure of the vehicle refrigerator in this embodiment of the application.

[0026] Explanation of reference numerals in the attached drawings: 1. Cabinet; 2. Drawer; 3. Frame; 11. Access port; 12. Sealing cover; 4. Centrifugal fan; 41. Air inlet; 42. Air outlet; 5. Air duct; 21. Ventilation mesh; 211. Air outlet mesh; 212. Air inlet mesh; 421. Top air outlet; 422. Side air outlet; 423. Left air outlet; 424. Right air outlet; 43. Outer shell; 44. Fan body; 45. Upper shell; 46. Lower shell; 451. Buckle; 461. Slot; 431. Mounting part; 432. Guide pipe. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-7This application will be described in further detail.

[0028] This application discloses an internal circulation structure for a vehicle-mounted refrigerator. (Refer to...) Figure 1 and Figure 2 The vehicle-mounted refrigerator's internal circulation structure includes a cabinet 1 and a drawer 2. The cabinet 1 forms an internal cavity, within which a frame 3 is installed. The drawer 2 is laterally connected to the frame 3 via a sliding rail structure. A retrieval opening 11 is located at the top of the cabinet 1, and a matching sealing cover 12 covers the retrieval opening 11. The retrieval opening 11 communicates with the inner cavity of the drawer 2. (See attached...) Figure 3 A gap is maintained between the outer wall of drawer 2 and the inner wall of frame 3. A centrifugal fan 4 is installed in the gap between the outer wall of drawer 2 and the inner wall of frame 3. The centrifugal fan 4 is fixedly installed on the inner rear wall of frame 3. The centrifugal fan 4 has an air inlet 41 and an air outlet 42. The gap between the outer wall of drawer 2 and the inner wall of frame 3 forms an air duct 5 for airflow. Ventilation mesh 21 is provided on the rear and side walls of drawer 2. When the centrifugal fan 4 is working, it drives the airflow to circulate. The airflow forms a three-dimensional circulating airflow through the air duct 5 and the ventilation mesh 21, allowing cold air to penetrate the inner cavity of drawer 2 from multiple directions, increasing the heat exchange area and achieving rapid and uniform cooling.

[0029] Reference Figure 3 The ventilation mesh 21 on the rear wall of drawer 2 is the exhaust mesh 211, and the ventilation mesh 21 on the side wall of drawer 2 is the intake mesh 212. The centrifugal fan 4 generates negative pressure by rotating its impeller, drawing in hot air from the drawer 2 cavity through the intake 41 via the exhaust mesh 211. Simultaneously, it outputs the cooled air at high pressure to the air duct 5 via the exhaust 42. The cool air in the air duct 5 enters the drawer 2 cavity through the intake mesh 212. The mesh of the intake mesh 212 is evenly distributed on the side wall of drawer 2. When the airflow passes through the intake mesh 212, it is dispersed into fine streams, improving the airflow dispersion efficiency and making the cool air distribution more uniform.

[0030] Reference Figure 4 The centrifugal fan 4 includes at least two air outlets 42, including an upper air outlet 421 and at least one side air outlet 422. In one specific embodiment, the upper air outlet 421 and the side air outlets 422 are circumferentially distributed around the air inlet 41, with one upper air outlet 421 and at least two side air outlets 422. The angle between each adjacent air outlet 42 and the air inlet 41 is 90°-120°. Taking two side air outlets 422 as an example, one implementation is that the upper air outlet 421 and the two side air outlets 422 are evenly distributed circumferentially around the air inlet 41, and the angle between each adjacent air outlet 42 and the air inlet 41 is 120°.

[0031] Reference Figure 5 and Figure 6In a preferred embodiment, there is one upper air outlet 421 and two side air outlets 422, namely a left air outlet 423 and a right air outlet 424. The upper air outlet 421 is located directly above the air inlet 41, and the left air outlet 423 and the right air outlet 424 are located directly to the left and right of the air inlet 41, respectively. The left air outlet 423 and the right air outlet 424 are used to disperse the cold air to the air ducts 5 on both sides of the drawer 2. Air inlet meshes 212 are provided on both sides of the drawer 2 to allow airflow to flow into the inner cavity of the drawer 2. Specifically, the airflow from the left air outlet 423 and the right air outlet 424 enters the left and right sides of the air duct 5, respectively, and then, after being guided by the air duct 5, enters the inner cavity of the drawer 2 through the air inlet meshes 212. Part of the airflow from the top air outlet 421 enters the inner cavity of drawer 2 directly from the top, while another part is reflected by the top wall of the air duct 5 and split to the left and right sides, where it merges with the airflow from the left air outlet 423 and the right air outlet 424 within the air duct 5. Thus, the airflow circulation between the centrifugal fan 4 and the inner cavity of drawer 2 forms a closed loop. The centrifugal fan 4 simultaneously delivers air to the sides and top of drawer 2, resulting in more even distribution of cool air. Furthermore, the airflow flows along the entire perimeter of drawer 2, extending the cool air flow path. The cool air enters the inner cavity of drawer 2 after being fully cooled, resulting in better cooling performance.

[0032] The air inlet 41 faces the air outlet mesh 211. The air inlet 41 is preferably circular, and the air outlet mesh 211 is preferably circularly distributed to enhance recirculation and suction, ensuring that hot air can be concentrated and efficiently drawn back. The opening of the upper air outlet 421 faces upwards to allow airflow to directly enter the inner cavity of the drawer 2 from the top. The left air outlet 423 and right air outlet 424 have the same opening orientation as the air inlet 41, i.e., both facing the rear end of the drawer 2. One end of the left air outlet 423 faces the left side of the air duct 5, and one end of the right air outlet 424 faces the right side of the air duct 5. The left and right air outlets directly facing the side of the air duct 5 reduce eddy current losses and improve air delivery efficiency.

[0033] Reference Figure 4 and Figure 7 The centrifugal fan 4 includes a housing 43 and a fan body 44. The fan body 44 is installed inside the housing 43, which is fixedly connected to the rear end wall of the frame 3 by bolts or screws. The housing 43 includes an upper housing 45 and a lower housing 46, which are detachably connected. This detachable connection facilitates installation, maintenance, and cleaning. Specifically, the upper housing 45 has a buckle 451, and the lower housing 46 has a slot 461 for the buckle 451 to engage. The detachable connection between the upper housing 45 and the lower housing 46 is achieved through the engagement of the buckle 451 and the slot 461. Alternatively, bolts or elastic clips can also be used for connection. Elastic clips refer to the use of spring plate protrusions and recesses to achieve a detachable connection.

[0034] The outer casing 43 includes a mounting portion 431 and a guide duct 432. The mounting portion 431 has an annular inner cavity for mounting the fan body 44. The guide duct 432 guides airflow from the air outlet 42 into the air duct 5. The air inlet 41 is located on the side of the mounting portion 431 facing the rear end of the drawer 2, and is located at the center of the mounting portion 431, with the center of the air inlet 41 coinciding with the center of the fan body 44. The guide duct 432 extends radially from the mounting portion 431, and the air outlet 42 is located at the end of the guide duct 432 away from the mounting portion 431. The extension of the guide duct 432 brings the air outlet 42 closer to the air duct 5, reducing airflow loss during air delivery and improving air delivery quality and efficiency.

[0035] The implementation principle of the internal circulation structure of a car refrigerator in this application embodiment is as follows: the centrifugal fan 4 generates negative pressure by rotating the impeller, and draws in hot air from the inner cavity of the drawer 2 through the air inlet 41. The cold air is delivered to the top of the drawer 2 and enters the inner cavity of the drawer 2 through the upper air outlet 421. The cold air is delivered to the left and right sides of the air duct 5 through the left air outlet 423 and the right air outlet 424. The cold air in the air duct 5 enters the inner cavity of the drawer 2 through the air inlet mesh 212. The hot air flowing out of the inner cavity of the drawer 2 flows back to the air inlet 41 through the air outlet mesh 211. A three-dimensional circulating airflow is formed between the centrifugal fan 4 and the inner cavity of the drawer 2. The centrifugal fan 4 delivers air to the sides and top of the drawer 2 simultaneously, so that the cold air coverage is more uniform and the cooling effect is better.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circulating structure for a vehicle-mounted refrigerator, comprising a frame (3) and a drawer (2), wherein the drawer (2) is slidably connected to the frame (3), characterized in that: A duct (5) is formed between the outer wall of the drawer (2) and the inner wall of the frame (3). Ventilation mesh (21) is provided on the rear end wall and side wall of the drawer (2). A centrifugal fan (4) is fixedly installed on the rear inner wall of the frame (3). The centrifugal fan (4) has an air outlet (42) and an air inlet (41). The airflow output from the air outlet (42) is guided through the duct (5) to the ventilation mesh (21) on the side wall of the drawer (2), and then enters the inner cavity of the drawer (2) through the ventilation mesh (21) on the rear end wall of the drawer (2). Then, it enters the air inlet (41) from the inner cavity of the drawer (2) through the ventilation mesh (21) on the rear end wall of the drawer (2) to form a three-dimensional circulating airflow.

2. The vehicle-mounted refrigerator internal circulation structure according to claim 1, characterized in that: The centrifugal fan (4) includes at least two air outlets (42), including an upper air outlet (421) and at least one side air outlet (422).

3. The vehicle-mounted refrigerator internal circulation structure according to claim 2, characterized in that: The upper air outlet (421) and the side air outlet (422) are distributed circumferentially around the air inlet (41) with the air inlet (41) as the center.

4. The vehicle-mounted refrigerator internal circulation structure according to claim 3, characterized in that: The upper air outlet (421) is located directly above the air inlet (41), and the side air outlet (422) includes a left air outlet (423) and a right air outlet (424), which are located directly to the left and right of the air inlet (41), respectively.

5. The vehicle-mounted refrigerator internal circulation structure according to claim 4, characterized in that: The opening of the upper air outlet (421) faces upward, and the openings of the left air outlet (423) and the right air outlet (424) face the same direction as the opening of the air inlet (41). The air inlet (41) is directly opposite the ventilation mesh (21) on the rear wall of the drawer (2).

6. The vehicle-mounted refrigerator internal circulation structure according to claim 1, characterized in that: The ventilation mesh (21) on the rear wall of the drawer (2) is an air outlet mesh (211), which is circularly distributed, and the air inlet (41) is circular.

7. The vehicle-mounted refrigerator internal circulation structure according to claim 1, characterized in that: Ventilation mesh (21) is provided on both sides of the drawer (2), and the ventilation mesh (21) on both sides of the drawer (2) is an air inlet mesh (212).

8. The vehicle-mounted refrigerator internal circulation structure according to claim 1, characterized in that: The centrifugal fan (4) includes a housing (43) and a fan body (44), the fan body (44) being installed inside the housing (43), the housing (43) including an upper housing (45) and a lower housing (46), the upper housing (45) and the lower housing (46) being detachably connected.

9. The vehicle-mounted refrigerator internal circulation structure according to claim 8, characterized in that: The upper housing (45) is provided with a buckle (451), and the lower housing (46) is provided with a slot (461) for the buckle (451) to engage.

10. The vehicle-mounted refrigerator internal circulation structure according to claim 8, characterized in that: The outer casing (43) includes a mounting part (431) and a guide pipe (432). The mounting part (431) is used to fix the fan body (44). The air inlet (41) is opened on the mounting part (431). The air outlet (42) is located at the end of the guide pipe (432) away from the mounting part (431). The guide pipe (432) is used to guide the airflow from the air outlet (42) into the air duct (5).

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