Refrigerator having centrifugal evaporator

Abstract

The application belongs to the technical field of refrigerators, and particularly discloses a refrigerator with a centrifugal evaporator. The refrigerator comprises a wind channel plate arranged on the inner side of a storage inner container, a wind shielding shell in the shape of a cylinder, a centrifugal fan, and a centrifugal evaporator. The bottom end of the wind shielding shell is fixed on the storage inner container, and a plurality of air outlets are arranged on the sidewall of the wind shielding shell. The centrifugal fan is arranged in the wind shielding shell, and the central axis of the centrifugal fan coincides with the central axis of the wind shielding shell. The position opposite to the centrifugal fan on the top end surface of the wind shielding shell is hollowed out. The centrifugal evaporator is arranged in the wind shielding shell and comprises an evaporation pipe and a plurality of arc-shaped fins. The fins are arranged in a spiral at a certain distance from the outer edge of the fan. The evaporation pipe is in the shape of a star and penetrates all the fins. The two ends of the evaporation pipe pass through the sidewall of the wind shielding shell or pass out of the air outlets. The centrifugal fan is configured to promote the cooling airflow formed by the evaporator to flow into the storage compartment through the air outlets. The centrifugal evaporator and the centrifugal fan are integrated into one body, so that the effective volume of the storage compartment and the refrigeration efficiency of the refrigerator are improved.

Description

Technical Field

[0001] This invention belongs to the field of refrigerator technology, and particularly relates to a refrigerator with a centrifugal evaporator. Background Technology

[0002] The evaporator in a refrigerator, also known as the cold source, is where the refrigerant, after being depressurized through the capillary tube, enters as a gas-liquid mixture. Through the evaporator's structure, the refrigerant changes from liquid to gas. In the evaporator, the refrigerant absorbs heat from the refrigerator's interior, thus achieving cooling. The lower the refrigerant's evaporation temperature, the greater its heat absorption capacity. Therefore, the evaporation area of ​​the evaporator is determined by the compressor's cooling capacity.

[0003] Research indicates that refrigerator evaporators are categorized into two types: natural cooling and forced air cooling. Based on their structural form, they are classified into five types: finned disc, tube sheet, aluminum composite plate, multi-layer shelf, and single-ridge finned. The finned disc evaporator, with its tightly integrated U-shaped copper tubes, offers high heat transfer efficiency and a small space footprint. The tube sheet evaporator is simple to manufacture, wear-resistant, and does not leak refrigerant when damaged, but its heat transfer efficiency is low. The aluminum composite plate evaporator features multiple parallel, seamless pipe connections, resulting in dense, direct heat transfer, high efficiency, and low pressure loss; however, its thin tube walls mean that leaks can affect cooling performance. The multi-layer shelf evaporator is commonly used in vertical freezer systems, offering high freezing efficiency and a compact structure. The single-ridge finned evaporator has a simple structure and good heat transfer, but it cannot form a closed or semi-closed container.

[0004] Large-capacity refrigerators are needed for storing food, so the development of large-capacity refrigerators has a very broad prospect. In addition, the larger the refrigerator capacity, the more food users can store, improving the user experience and making the refrigerator more competitive in the market, which will generate better social and economic benefits.

[0005] Currently, refrigerators on the market all use separate evaporators and separate air duct systems. These air duct systems include components such as plastic foam, cotton foam, and dampers. The air duct structure contains a lot of unused, redundant space. This space, combined, increases the volume of the air duct, reducing the overall volume of the refrigerator and decreasing its usable capacity. Furthermore, the evaporator and fan structures occupy a significant amount of space, severely compressing the interior space. Therefore, researching ways to reduce the overall volume of the air duct system and evaporator is a very good approach to increasing the capacity of refrigerators. Summary of the Invention

[0006] The purpose of this invention is to provide a refrigerator with a centrifugal evaporator, which effectively solves the problem that the evaporator and fan structure occupy a large refrigerator volume in traditional refrigerators.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A refrigerator with a centrifugal evaporator includes:

[0009] The enclosure includes an outer shell and a storage liner disposed inside the outer shell, wherein at least one storage compartment is defined in the storage liner;

[0010] An air duct plate is located on the inside of the storage liner, forming an air duct between the plate and the storage liner.

[0011] The windproof outer shell is a hollow cylinder. The bottom end of the windproof outer shell is fixed to the storage liner. Multiple air outlets are provided on the side wall of the windproof outer shell.

[0012] A centrifugal fan is installed inside the windproof housing, with the central axis of the centrifugal fan coinciding with the central axis of the windproof housing. The top surface of the windproof housing is hollowed out at the position opposite to the centrifugal fan.

[0013] A centrifugal evaporator is located inside a windproof outer shell. The centrifugal evaporator includes an evaporation tube and multiple arc-shaped fins. The fins are arranged in a spiral pattern at a certain distance from the outer edge of the centrifugal fan. The evaporation tube is star-shaped and connected to the fins. The two ends of the evaporation tube pass through the side wall of the windproof outer shell or exit from the air outlet.

[0014] The centrifugal fan is configured to cause the cooling airflow generated by the centrifugal evaporator to flow through the air outlet to the air duct, and then to the storage room.

[0015] Furthermore, a heating wire is provided between the windshield shell and the air duct plate.

[0016] Furthermore, it also includes a controller. The bottom of the windshield housing is provided with a brake motor for controlling the rotation angle of the windshield housing. The brake motor is connected to the controller. When the brake motor controls the windshield housing to rotate to the point where the distance between the adjacent fin gap and the air outlet is the shortest, the air volume is the largest; otherwise, the air volume is the smallest.

[0017] Furthermore, the height of the windshield shell is 20mm to 80mm, the diameter is 10cm to 50cm, and the material of the windshield shell is PP plastic or PS plastic.

[0018] Furthermore, the dimensions of the air outlet are 20mm*20mm to 40mm*60mm.

[0019] Furthermore, the height of the fins is 18mm to 60mm, the length of the fins is 2.5πcm to 10πcm, and the diameter of the central circle formed by the spiral arrangement of the fins is 8cm to 48cm.

[0020] Furthermore, the centrifugal fan has a diameter of 5cm to 20cm, a rotation speed of 1000r / min to 6000r / min, and an air volume of 20m³. 3 / h~100m 3 / h.

[0021] Furthermore, the heating wire is disc-shaped or semi-disc-shaped, and the size of the heating wire is the same as the size of the central circle formed by the spiral arrangement of the fins. The diameter of the heating wire is 8cm to 48cm.

[0022] Furthermore, the position of the heating wire corresponds to the position of the central circle formed by the spiral arrangement of the fins.

[0023] Furthermore, the storage room includes a cold storage room.

[0024] The beneficial technical effects of this invention are:

[0025] (1) By integrating the centrifugal evaporator and centrifugal fan, which consist of spirally arranged arc-shaped fins and star-shaped evaporator tubes, the refrigeration efficiency of the refrigerator is improved, the volume occupied by the refrigeration components is reduced, and the effective volume of the storage compartment is increased.

[0026] (2) By combining the rotatable windproof shell, centrifugal evaporator and centrifugal fan, the air volume of the air outlet on the windproof shell can be precisely controlled to achieve temperature control in the storage room, which is conducive to the precise temperature control and energy saving of the refrigerator. Attached Figure Description

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a schematic diagram showing the positional relationship between the air duct system and the evaporator in a traditional refrigerator;

[0029] Figure 2 This is a schematic diagram of the air duct system of the present invention;

[0030] Figure 3 This is a perspective view of the combined structure of the centrifugal evaporator and centrifugal fan of the present invention;

[0031] Figure 4 This is a top view of the combined structure of the centrifugal evaporator and centrifugal fan of the present invention;

[0032] Figure 5 yes Figure 3 Schematic diagram of the structure of the central evaporator and fan;

[0033] Figure 6 yes Figure 3 A schematic diagram of the arrangement of the medium-circular arc-shaped fins and the fan;

[0034] Figure 7 This is a perspective view of the combined structure of the windproof housing, centrifugal evaporator, and centrifugal fan of the present invention;

[0035] Figure 8 This is a perspective view of the combined structure of the windproof housing, centrifugal evaporator, and centrifugal fan of the present invention;

[0036] Figure 9 yes Figure 8 A schematic diagram of the internal structure. Detailed Implementation

[0037] like Figure 1 As shown, traditional refrigerators have a separate evaporator 1 and a separate air duct system 2. This air duct system includes components such as plastic foam, foam padding, dampers, and a fan 3. Air duct system 2 contains a lot of unused space, which increases its volume and reduces the effective volume of the refrigerator's storage compartment. To solve the above-mentioned technical problems, the applicant of this invention has creatively proposed a novel evaporator structure that integrates the fan and evaporator into a single air duct system, thereby increasing the effective volume of the refrigerator's storage compartment.

[0038] like Figure 2 As shown, a refrigerator with a centrifugal evaporator includes a cabinet, which includes an outer shell and a storage liner 4 disposed inside the outer shell. The space between the outer shell and the storage liner 4 is filled with insulation material. The storage liner 4 defines a storage compartment, which includes at least a refrigerator liner. The storage compartment includes a refrigerator compartment defined by the refrigerator liner. A door is also provided on the front side of the storage liner 4 to open or close the storage compartment.

[0039] It also includes: an air duct plate 5, located inside the storage liner 4, forming an air duct between the plate and the storage liner 4.

[0040] like Figure 8 As shown, the windproof shell 6 is a hollow cylinder. The bottom end of the windproof shell 6 is fixed to the storage liner 4. Multiple air outlets 7 are provided on the side wall of the windproof shell 6.

[0041] like Figure 7 and Figure 9 As shown, a centrifugal fan 8 is installed inside the windproof housing 6. The central axis of the centrifugal fan 8 coincides with the central axis of the windproof housing 6. The top surface of the windproof housing 6 is hollowed out at the position opposite to the centrifugal fan 8.

[0042] Centrifugal evaporator 9 is located inside the windproof casing 6, such as Figures 3-6As shown, the centrifugal evaporator 9 includes an evaporator tube 10 and a plurality of arc-shaped fins 11. The fins 11 are arranged in a spiral at a certain distance from the outer edge of the centrifugal fan 8. The evaporator tube 10 is star-shaped and connects all the fins 11. The two ends of the evaporator tube 10 pass through the side wall of the windproof shell 6 or exit from the air outlet 7.

[0043] The centrifugal fan 8 is configured to cause the cooling airflow generated by the centrifugal evaporator 9 to flow through the air outlet 7 to the air duct, and then to the storage room.

[0044] In some embodiments, such as Figure 2 As shown, a heating wire 12 is provided between the windproof outer shell 6 and the air duct plate 5. In order to increase the heating area of ​​the heating wire 12, the heating wire 12 is in the shape of a disc or a semi-disc. The size of the heating wire 12 is the same as the size of the central circle 13 formed by the spiral arrangement of the fins 11. The position of the heating wire 12 corresponds to the position of the central circle 13 formed by the spiral arrangement of the fins 11.

[0045] To precisely control the cooling capacity of the air supply and achieve temperature control and energy saving in the storage compartment, the refrigerator with a centrifugal evaporator 9 also includes a controller. A brake motor is located at the bottom of the baffle shell 6 to control its rotation angle. The brake motor is connected to the controller. When the brake motor controls the baffle shell 6 to rotate to the point where the distance between the adjacent fins 11 and the air outlet 7 is shortest, the airflow is at its maximum; conversely, the airflow is at its minimum.

[0046] In some embodiments, such as Figure 8 and Figure 9 As shown, the bottom wall of the windshield housing has a double-layer structure, with the outer bottom wall being rotatable and the inner bottom wall being fixed. A windshield plate 14 is provided at regular intervals along the outer edge of the inner bottom wall, and each windshield plate 14 is configured to partially block the area of ​​the adjacent air outlet 7. When the brake motor controls the windshield housing 6 to rotate, the windshield plate 14 affects the size of the air outlet, further achieving the purpose of controlling the cooling capacity of the supplied air.

[0047] In some embodiments, the side wall of the windshield housing 6 is provided with through holes for both ends of the evaporator tube 10 to pass through. The size of the through holes is larger than the diameter of the evaporator tube 10. The specific size of the through holes is such that it does not restrict the rotation angle of the windshield housing 6.

[0048] The refrigerator has three temperature control modes. When the user opens the door or selects the "rapid cooling" mode, the controller controls the brake motor to drive the wind deflector shell 6 to rotate. At this time, the distance between the gap between the adjacent fins 11 at the air outlet 7 on the wind deflector shell 6 and the air outlet 7 is the shortest. When the door is not opened for 24 hours, the distance between the gap between the adjacent fins 11 at the air outlet 7 on the wind deflector shell 6 and the air outlet 7 is the longest.

[0049] In some embodiments, the height of the windshield housing 6 is 20mm to 80mm, and the diameter is 10cm to 50cm. The material of the windshield housing 6 is PP plastic or PS plastic. The size of the air outlet 7 is 20mm*20mm to 40mm*60mm. The diameter of the evaporator tube 10 is a commonly used size. The height of the fins 11 is 18mm to 60mm, the length of the fins 11 is 2.5πcm to 10πcm, and the diameter of the central circle 13 formed by the spiral arrangement of the fins 11 is 8cm to 48cm. The diameter of the centrifugal fan 8 is 5cm to 20cm, the rotation speed is 1000r / min to 6000r / min, and the air volume is 20m³. 3 / h~100m 3 / h.

[0050] The working principle of this invention is as follows: When refrigeration begins, the cooling airflow generated by the centrifugal evaporator 9 is driven by the centrifugal fan 8 through the air outlet 7 to the air duct, and then to the storage room. By coordinating the spiral arrangement structure of the centrifugal evaporator 9 with the position of the air outlet 7 on the baffle shell 6, the airflow rate of the air outlet 7 is controlled, thereby achieving precise air delivery to the storage room.

[0051] This invention integrates a centrifugal evaporator 9, composed of spirally arranged arc-shaped fins 11 and star-shaped evaporator tubes 10, and a centrifugal fan 8 into one unit, which not only improves the refrigeration efficiency of the refrigerator, but also reduces the volume occupied by the refrigeration components and increases the effective volume of the storage compartment.

[0052] Any parts not described in this invention can be implemented using or by drawing upon existing technologies. Furthermore, the above description is not intended to limit the invention, and the invention is not limited to the examples given above. For instance, the surface of the fins in this invention can be reinforced, the spiral arrangement shape of the centrifugal evaporator can be varied, the number of fins in the centrifugal evaporator can be increased or decreased, and the windproof outer shell can be installed on a freezing inner liner, a refrigerating inner liner, or a variable temperature inner liner, etc. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this invention should also be considered within the protection scope of this invention.

Claims

1. A refrigerator having a centrifugal evaporator, characterized by, The application relates to a refrigeration box. The refrigeration box comprises a box body and a wind channel plate. The box body comprises a shell and a storage container arranged inside the shell, and at least one storage compartment is defined in the storage container. The wind channel plate is arranged on the inner side of the storage container and forms a wind channel with the storage container. A wind-blocking shell in the shape of a hollow cylinder is arranged on the bottom end of the storage container. A plurality of air outlets are arranged on the side wall of the wind-blocking shell. A centrifugal fan is arranged in the wind-blocking shell, and the central axis of the centrifugal fan coincides with the central axis of the wind-blocking shell. The top end surface of the wind-blocking shell is hollowed out opposite the centrifugal fan.

2. The refrigerator having a centrifugal evaporator according to claim 1, characterized in that, A centrifugal evaporator is arranged in the wind-blocking shell.

3. The refrigerator having a centrifugal evaporator according to claim 2, characterized in that, The centrifugal evaporator comprises an evaporation pipe and a plurality of circular-arc-shaped fins.

4. The refrigerator having a centrifugal evaporator according to claim 3, characterized in that, The fins are arranged in a spiral at a certain distance from the outer edge of the centrifugal fan.

5. The refrigerator having a centrifugal evaporator according to claim 4, characterized in that, The evaporation pipe is in the shape of a star and penetrates through the fins.

6. The refrigerator having a centrifugal evaporator according to claim 5, characterized in that, The diameter of the centrifugal fan is 5cm-20cm, the rotating speed is 1000r / min-6000r / min, and the air volume is 20m 3 / h-100 m 3 / h.

7. The refrigerator having a centrifugal evaporator according to claim 6, characterized in that, The centrifugal fan is configured to promote the cooling airflow formed by the centrifugal evaporator to flow to the wind channel through the air outlets and then to the storage compartment.

8. The refrigerator having a centrifugal evaporator according to claim 7, characterized in that, A controller is arranged on the bottom of the wind-blocking shell.

9. The refrigerator having a centrifugal evaporator according to any one of claims 1-8, characterized in that, The controller is connected with a brake motor for controlling the rotation angle of the wind-blocking shell. When the brake motor controls the wind-blocking shell to rotate to the position where the gap between the adjacent fins corresponding to the air outlets is the shortest, the air outlet is the largest. Conversely, the air outlet is the smallest. A heating wire is arranged between the wind-blocking shell and the wind channel plate. The height of the wind-blocking shell is 20-80 mm, and the diameter is 10-50 cm. The material of the wind-blocking shell is PP plastic or PS plastic. The size of the air outlet is 20*20-40*60 mm. The height of the fin is 18-60 mm, the length of the fin is 2.5pi-10pi cm, and the diameter of the central circle formed by the spiral arrangement of the fin is 8-48 cm. The heating wire is in the shape of a disc or a half disc. The size of the heating wire is the same as the size of the central circle formed by the spiral arrangement of the fin. The diameter of the heating wire is 8-48 cm. The arrangement position of the heating wire corresponds to the position of the central circle formed by the spiral arrangement of the fin. The storage compartment comprises a refrigeration chamber.

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