Refrigerator refrigerating chamber air duct with anti-backflow function

Abstract

The utility model is applicable to the technical field of refrigerator air duct structures, and provides a refrigerator refrigerating chamber air duct with an anti-backflow function, which comprises a device frame with an opening at the bottom end. According to the refrigerator refrigerating chamber air duct with the anti-backflow function, by arranging a rotating shaft and a plurality of fan blades, when the device operates, a rotating disc outside a device frame can continuously rotate, in the rotating process of the rotating disc, a fixing base eccentrically arranged on the surface of the rotating disc can drive one end of a linkage rod to move, and the other end of the linkage rod can drive a connecting base to move; the connecting seat is fixedly connected to one end of the rack, and the rack only can vertically slide under the action of the sliding block, so that the rack can vertically and repeatedly move under the driving of the linkage rod, the gear is driven to repeatedly rotate in two directions, and the rotating shaft synchronously rotates; and the fan blades on the surface of the rotating shaft can swing, so that gas flowing back into the air duct can be fanned away again, and the air door is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerator air duct structures, and in particular relates to a refrigerator cold storage chamber air duct with a backflow prevention function. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature. The refrigeration effect inside the refrigerator is achieved through the circulation of cold air, and a duct structure is required to achieve circulation. However, the current refrigerator duct structure is relatively simple and can only play a certain guiding role. In actual use, cold air is prone to backflow, affecting the normal use of the refrigerator's damper. Utility Model Content

[0003] The utility model provides a refrigerator cold storage compartment air duct with an anti-backflow function, aiming to solve the problem that the current refrigerator air duct has a relatively simple structure and can only play a certain guiding role, and is prone to cold air backflow during actual use, affecting the normal use of the refrigerator damper.

[0004] The utility model is realized in this way: a refrigerator refrigerating chamber air duct with a backflow prevention function comprises a device frame with an open bottom end, a rotating shaft is connected to the lower end of the device frame for transverse rotation, and a plurality of fan blades are fixedly connected to the outer surface of the rotating shaft;

[0005] One end of the rotating shaft can rotatably pass through the device frame and extend outward, and the outer surface of the rotating shaft is fixedly connected to a gear on the outside of the device frame, and a slide groove is vertically opened on the outer surface of the device frame, and a plurality of sliders are slidably connected inside the slide groove, and the outer surfaces of the plurality of sliders are fixedly connected to racks that mesh with the gears, and the top of the rack is fixedly connected to a connecting seat, the outer surface of the device frame is fixedly connected to an outer shell, and the inner surface of the outer shell is laterally rotatably connected to a rotating column, the outer surface of the rotating column is fixedly connected to a turntable, and the inner surface of the turntable is fixedly connected to an eccentrically arranged fixed seat, and a linkage rod is arranged between the connecting seat and the fixed seat.

[0006] Preferably, two ends of the linkage rod are rotatably connected to the outer ends of the fixing seat and the connecting seat respectively.

[0007] Preferably, the rack and the gear are both located inside the outer shell, and a motor is laterally fixedly connected to the outer surface of the outer shell, and an output shaft of the motor rotatably passes through the outer shell and is fixedly connected to one end of the rotating column.

[0008] Preferably, an air inlet is transversely penetrated through the top end of the rear surface of the device frame, and a connecting ring matching the contour of the air inlet is fixedly connected to the rear surface of the device frame and located outside the air inlet.

[0009] Preferably, a plurality of air guide vanes with outer ends tilted downward are fixedly connected to the inner surface of the device frame at uniform intervals along its length direction.

[0010] Preferably, a filter plate is laterally fixedly connected to the bottom end of the interior of the device frame. Beneficial Effects

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By setting a rotating shaft and multiple fan blades, when the device is in operation, the turntable outside the device frame will continue to rotate, and during the rotation of the turntable, the fixed seat eccentrically arranged on its surface will drive one end of the linkage rod to move, and the other end of the linkage rod will drive the connecting seat to move. Since the connecting seat is fixedly connected to one end of the rack, and the rack can only slide vertically under the action of the slider, the rack will repeatedly move vertically under the drive of the linkage rod, thereby driving the gear to repeatedly rotate in two directions, so that the rotating shaft rotates synchronously, and the fan blades on the surface of the rotating shaft will swing so that the gas backflowing into the air duct will be fanned away again, thereby protecting the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the rotating shaft driving structure of the utility model;

[0015] Figure 3 It is a side structural schematic diagram of the utility model.

[0016] In the figure: 1-device frame, 2-air inlet, 3-connecting ring, 4-rotating shaft, 5-fan blade, 6-gear, 7-slide groove, 8-rack, 9-connecting seat, 10-rotating column, 11-turntable, 12-linking rod, 13-outer shell, 14-motor, 15-filter plate, 16-air guide vane. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution: a refrigerator cold storage room air duct with a backflow prevention function, comprising a device frame 1 with an open bottom, a rotating shaft 4 is horizontally rotatably connected to the lower end of the device frame 1, and a plurality of fan blades 5 are fixedly connected to the outer surface of the rotating shaft 4.

[0019] One end of the rotating shaft 4 rotatably passes through the device frame 1 and extends outwardly, the outer surface of the rotating shaft 4 is fixedly connected to a gear 6 located outside the device frame 1, a slide groove 7 is vertically opened on the outer surface of the device frame 1, and a plurality of sliders are slidably connected inside the slide groove 7, and the outer surfaces of the plurality of sliders are fixedly connected to a rack 8 meshing with the gear 6, and the top of the rack 8 is fixedly connected to a connecting seat 9, the outer surface of the device frame 1 is fixedly connected to an outer shell 13, and the inner surface of the outer shell 13 is laterally rotatably connected to a rotating column 10, the outer surface of the rotating column 10 is fixedly connected to a turntable 11, and the inner surface of the turntable 11 is fixedly connected to an eccentrically arranged fixed seat, and a linkage rod 12 is arranged between the connecting seat 9 and the fixed seat.

[0020] The two ends of the linkage rod 12 are rotatably connected to the outer ends of the fixing seat and the connecting seat 9 respectively.

[0021] In this embodiment, when the device is in operation, the turntable 11 outside the device frame 1 will continue to rotate. During the rotation of the turntable 11, the eccentrically arranged fixed seat on its surface will drive one end of the linkage rod 12 to move, and the other end of the linkage rod 12 will drive the connecting seat 9 to move. Since the connecting seat 9 is fixedly connected to one end of the rack 8, the rack 8 can only slide vertically under the action of the slider, so the rack 8 will be driven by the linkage rod 12 to perform repeated vertical movement, thereby driving the gear 6 to rotate repeatedly in two directions, so that the rotating shaft 4 rotates synchronously, and the fan blades 5 on the surface of the rotating shaft 4 will swing so that the gas backflowing into the air duct will be fanned away again, thereby protecting the damper.

[0022] Furthermore, the rack 8 and the gear 6 are both located inside the outer shell 13 , and a motor 14 is laterally fixedly connected to the outer surface of the outer shell 13 . The output shaft of the motor 14 rotatably passes through the outer shell 13 and is fixedly connected to one end of the rotating column 10 .

[0023] In this embodiment, the motor 14 is a power structure that can drive the rotating column 10 to rotate, thereby allowing the rotating shaft 4 inside the device to move.

[0024] Furthermore, an air inlet 2 is transversely penetrated through the top of the rear surface of the device frame 1 , and a connecting ring 3 matching the contour of the air inlet 2 is fixedly connected to the rear surface of the device frame 1 and located outside the air inlet 2 .

[0025] In this embodiment, the air inlet 2 is used for air intake, and the connecting ring 3 facilitates the connection of the device with the damper structure.

[0026] Furthermore, a plurality of air guide blades 16 with outer ends tilted downward are fixedly connected to the inner surface of the device frame 1 at uniform intervals along its length direction.

[0027] In this embodiment, the plurality of air guide pieces 16 can also play a certain guiding effect on the gas, further preventing the occurrence of the cold air backflow phenomenon.

[0028] Furthermore, a filter plate 15 is laterally fixedly connected to the bottom end of the device frame 1 .

[0029] In this embodiment, the filter plate 15 has a filtering effect, filtering dust in the air to prevent the dust from entering the interior of the refrigerator and contaminating the food.

[0030] The working principle and use process of the utility model: After the utility model is installed, when the device is in operation, the turntable 11 outside the device frame 1 will continue to rotate. During the rotation of the turntable 11, the fixed seat eccentrically arranged on its surface will drive one end of the linkage rod 12 to move, and the other end of the linkage rod 12 will drive the connecting seat 9 to move. Since the connecting seat 9 is fixedly connected to one end of the rack 8, the rack 8 can only slide vertically under the action of the slider, so the rack 8 will be driven by the linkage rod 12 to perform repeated vertical movement, thereby driving the gear 6 to rotate repeatedly in two directions, so that the rotating shaft 4 rotates synchronously, and the fan blades 5 on the surface of the rotating shaft 4 will swing so that the gas backflowing into the air duct will be fanned away again, thereby protecting the damper.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigerator compartment air duct with anti-backflow function, Features: It comprises a device frame (1) with an open bottom end, wherein the lower end inside the device frame (1) is laterally rotatably connected to a rotation shaft (4), and the outer surface of the rotation shaft (4) is fixedly connected to a plurality of fan blades (5); One end of the rotating shaft (4) rotatably passes through the device frame (1) and extends outwardly; the outer surface of the rotating shaft (4) is fixedly connected to a gear (6) located outside the device frame (1); a slide groove (7) is vertically opened on the outer surface of the device frame (1); a plurality of sliders are slidably connected inside the slide groove (7); the outer surfaces of the plurality of sliders are fixedly connected to racks (8) meshing with the gear (6); the top of the rack (8) is fixedly connected to a connecting seat (9); the outer surface of the device frame (1) is fixedly connected to an outer shell (13); the inner surface of the outer shell (13) is laterally rotatably connected to a rotating column (10); the outer surface of the rotating column (10) is fixedly connected to a rotating disk (11); the inner surface of the rotating disk (11) is fixedly connected to an eccentrically arranged fixing seat; a linkage rod (12) is arranged between the fixing seat (9) and the fixing seat.

2. A refrigerator refrigeration compartment air duct with a backflow prevention function as claimed in claim 1, Features: The two ends of the linkage rod (12) are rotatably connected to the outer ends of the fixing seat and the connecting seat (9) respectively.

3. The refrigerator compartment air duct with anti-backflow function as claimed in claim 1, Features: The rack (8) and the gear (6) are both located inside the outer shell (13); a motor (14) is transversely fixedly connected to the outer surface of the outer shell (13); an output shaft of the motor (14) rotatably passes through the outer shell (13) and is fixedly connected to one end of the rotating column (10).

4. The refrigerator compartment air duct with backflow prevention function as claimed in claim 1, Features: An air inlet (2) is provided transversely through the top end of the rear surface of the device frame (1), and a connecting ring (3) matching the contour of the air inlet (2) is fixedly connected to the rear surface of the device frame (1) and located outside the air inlet (2).

5. The refrigerator compartment air duct with backflow prevention function as claimed in claim 1, Features: The inner surface of the device frame (1) is fixedly connected with a plurality of air guide blades (16) whose outer ends are tilted downward at even intervals along its length direction.

6. The refrigerator compartment air duct with anti-backflow function as claimed in claim 1, Features: A filter plate (15) is laterally fixedly connected to the bottom end of the interior of the device frame (1).

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