Frost-resistant refrigerator opening structure of direct-cooling refrigerator

Abstract

The utility model discloses a direct-cooling freezer frost-resistant freezer opening structure which comprises a first frame opening part and a second frame opening part arranged on the lower left portion of the first frame opening part, a first cavity is formed below the first frame opening part, a partition plate is fixedly connected to an inner cavity of the first cavity, a first connecting pipe is fixed to the position, close to the right side, of the partition plate in a penetrating mode, and a second connecting pipe is fixed to the position, close to the right side, of the partition plate. When the drying device is used, the L-shaped handle is pulled to move upwards, so that the sealing plate can be driven to move upwards synchronously, the drying box is driven to move upwards through the connecting plate, the drying box can be taken out from the inner cavity of the second cavity, and then the drying box is taken out from the inner cavity of the second cavity. And invalid activated carbon in the drying box can be conveniently taken out and replaced by new activated carbon, and the later maintenance cost can be reduced by improving the operation convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, in particular to a frost-proof cabinet opening structure of a direct-cooling refrigerator. Background Art

[0002] After a period of use, a thick layer of frost will form on the inner wall of a direct cooling freezer. Generally, it is necessary to manually remove the frost layer to improve the refrigeration efficiency of the freezer. By analyzing the principle of frost formation in a direct cooling freezer, it can be seen that due to the low temperature inside the freezer, the air pressure inside the freezer is lower than that outside. The moist air from the outside will enter the freezer through the micro-gap at the seal between the freezer cover and the freezer body. This micro-gap is unavoidable in the industry. Water vapor condenses into a frost layer when it is cold. Therefore, in order to prevent the freezer from frosting, dry air needs to enter the freezer to balance the internal and external pressures of the freezer, while reducing the density of water molecules in the freezer, thereby reducing the speed of frosting and extending the defrosting period. In this regard, it is necessary to improve the existing technology.

[0003] Prior art Patent publication number CN116659170A proposes a patent document of a frost-proof cabinet opening structure for a direct cooling refrigerator, which can sterilize and dry the gas entering the refrigerator, reduce the density of water molecules in the refrigerator, thereby reducing the frost formation speed and extending the defrosting period. In addition, the air pressure inside and outside the refrigerator is further balanced, making the refrigerator door opening operation easier.

[0004] However, in actual use of the prior art, when activated carbon is used as a desiccant, it is troublesome to replace the desiccant at a later stage, which increases the cost of later maintenance. In addition, the first vent hole is easily blocked due to dust accumulation during use, thereby affecting the incoming air pressure and reducing the actual anti-frost effect. Utility Model Content

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] A frost prevention cabinet opening structure for a direct cooling freezer comprises a first frame opening portion and a second frame opening portion arranged at the lower left side of the first frame opening portion, a first cavity is arranged at the lower portion of the first frame opening portion, and a partition is fixedly connected to the inner cavity of the first cavity, a first connecting pipe is fixedly penetrated and fixedly provided on the partition near the right side, and a second connecting pipe is fixedly connected to the bottom of the partition near the left side, the first connecting pipe and the second connecting pipe are fixedly connected at one end adjacent to each other, an air inlet is opened on the right side of the first frame opening portion, and a first filter is arranged on the left side of the inner cavity of the air inlet, a cleaning mechanism is arranged on the right side of the first filter, a piston is slidably connected to the inner cavity of the second connecting pipe, and a limiting rod is fixedly connected to the left side of the top of the piston, a second cavity connected to the inner cavity of the first cavity is arranged at the bottom of the second frame opening portion, and the second cavity The inner cavity is provided with a shell, an air inlet pipe is plugged and fixed on the right side of the shell, and the right end of the air inlet pipe is fixedly connected to the second connecting pipe, an air outlet pipe is plugged and fixed on the left side of the shell, and legs are fixedly connected at the four corners of the bottom of the shell, and the bottom ends of the four legs are fixedly connected to the bottom of the inner cavity of the second cavity, a first through slot is provided on the top of the shell, and a drying box is slidably penetrated through the inner cavity of the first through slot, and openings are provided on the left and right sides of the drying box, a second through slot which is the same size as the first through slot is provided on the top of the second frame mouth, and a sealing plate is slidably connected to the inner cavity of the second through slot, a connecting plate is fixedly connected to the bottom of the sealing plate, and the bottom of the connecting plate is fixedly connected to the drying box, an exhaust port is provided on the left side of the second frame mouth, and a second filter is provided in the inner cavity of the exhaust port.

[0007] Furthermore, blue light sterilization lamps are provided on both left and right sides of the inner cavity of the vertical port of the first connecting tube.

[0008] Furthermore, the cleaning mechanism includes two dust brushes, and the two dust brushes are both fittedly arranged on the right side of the first filter screen, and the adjacent sides of the two dust brushes are fixedly connected to the same rotating rod, a through hole compatible with the rotating rod is opened at the center of the circle of the first filter screen, and the left end of the rotating rod passes through the inner cavity of the through hole and is rotatably connected to the left side wall of the inner cavity of the first cavity, the vertical part and the partition plate of the second connecting pipe are both provided with through holes, and the inner cavity of the two through holes is slidably penetrated by the same vertical rod, the bottom end of the vertical rod is fixedly connected to the piston, and the top end of the vertical rod is fixedly connected to a rack, and a gear meshing with the rack is fixedly sleeved on the outer wall of the rotating rod.

[0009] Furthermore, a sealing ring is provided on the outer wall of the vertical rod, and the sealing ring is fixedly connected to the top of the partition.

[0010] Furthermore, a fixing groove is provided at the bottom of the inner cavity of the shell, and a lower magnet block is provided in the inner cavity of the fixing groove. An upper magnet block is magnetically attracted to the top of the lower magnet block, and the upper magnet block is fixedly connected to the bottom of the drying box.

[0011] Furthermore, a groove is provided on the top of the sealing plate, and an L-shaped handle is fixedly connected to the middle position of the bottom of the inner cavity of the groove.

[0012] Furthermore, the left end of the limiting rod is inserted into the inner cavity of the air inlet pipe and is arranged to fit the bottom of the inner cavity of the air inlet pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By pulling the L-shaped handle upward, the sealing plate can be moved upward synchronously, and the drying box can be moved upward through the connecting plate, so that the drying box can be taken out from the inner cavity of the second cavity. Then, the failed activated carbon in the drying box can be taken out and replaced with a new one, which is conducive to reducing the later maintenance cost by improving the convenience of operation.

[0015] 2. By lifting and moving the piston in the inner cavity of the second connecting pipe, the rack can be driven to rise and fall synchronously through the vertical rod, and the gear can be driven to rotate. The rotation of the gear drives the two dust removal brushes to rotate through the rotating rod, so as to clean the dust attached to the right side of the first filter, thereby preventing dust from clogging the air inlet, which is beneficial to ensuring the anti-frost effect of the cabinet opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0017] Figure 2 is a schematic cross-sectional structural diagram of this embodiment;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of this embodiment;

[0019] Figure 4 is a schematic cross-sectional structural diagram of the first connecting pipe of this embodiment;

[0020] Figure 5 for Figure 2 A magnified view of the structure at center.

[0021] In the figure: 1. first frame opening; 2. second frame opening; 3. first cavity; 4. second cavity; 5. air inlet; 6. first filter; 7. air outlet; 8. second filter; 9. partition; 10. first connecting pipe; 11. second connecting pipe; 12. air inlet pipe; 13. shell; 14. supporting leg; 15. air outlet pipe; 16. drying box; 17. opening; 18. upper magnet block; 19. lower magnet block; 20. connecting plate; 21. sealing plate; 22. vertical rod; 23. groove; 24. L-shaped handle; 25. piston; 26. limit rod; 27. blue light sterilization lamp; 28. sealing ring; 29. ​​rack; 30. gear; 31. rotating rod; 32. dust removal brush. DETAILED DESCRIPTION

[0022] See also Figures 1 to 5 , the utility model provides the following technical solutions:

[0023] A frost prevention cabinet opening structure for a direct cooling freezer comprises a first frame opening portion 1 and a second frame opening portion 2 arranged at the lower left of the first frame opening portion 1, a first cavity 3 is arranged below the first frame opening portion 1, and a partition 9 is fixedly connected to the inner cavity of the first cavity 3, a first connecting pipe 10 is fixedly penetrated and fixed near the right side of the partition 9, and a second connecting pipe 11 is fixedly connected near the left side of the bottom of the partition 9, and blue light sterilization lamps 27 are arranged on both sides of the inner cavity of the vertical port of the first connecting pipe 10. Through the arrangement of the blue light sterilization lamp 27, the air flowing into the inner cavity of the first connecting pipe 10 can be sterilized. The first connecting pipe 10 and the second connecting pipe 11 are fixedly connected. 1 is fixedly connected at one end adjacent to the first frame mouth portion 1, an air inlet 5 is provided on the right side of the first frame mouth portion 1, and a first filter screen 6 is provided on the left side of the inner cavity of the air inlet 5, and a cleaning mechanism is provided on the right side of the first filter screen 6, a piston 25 is slidably connected to the inner cavity of the second connecting pipe 11, and a limiting rod 26 is fixedly connected to the left side of the top of the piston 25, and the piston 25 is lifted and slid in the inner cavity of the second connecting pipe 11, so that the opening and closing state of the second connecting pipe 11 can be controlled to achieve the purpose of automatic frost prevention, and a second cavity 4 connected to the inner cavity of the first cavity 3 is provided at the bottom of the second frame mouth portion 2, and a shell 13 is provided in the inner cavity of the second cavity 4.

[0024] The right side of the shell 13 is plugged and fixed with the air inlet pipe 12, and the right end of the air inlet pipe 12 is fixedly connected to the second connecting pipe 11, the left end of the limit rod 26 is plugged into the inner cavity of the air inlet pipe 12, and is arranged in a close fit with the bottom of the inner cavity of the air inlet pipe 12 to limit the lifting range of the piston 25, the left side of the shell 13 is plugged and fixed with the air outlet pipe 15, and the four corners of the bottom of the shell 13 are fixedly connected with the legs 14, the bottom ends of the four legs 14 are fixedly connected to the bottom of the inner cavity of the second cavity 4, the top of the shell 13 is provided with a first through groove, and the inner cavity of the first through groove is slidably penetrated by a drying box 16, and the left and right sides of the drying box 16 are provided with openings 17, and the top of the second frame mouth 2 is opened A second through groove having the same size as the first through groove is provided, and a sealing plate 21 is slidably connected to the inner cavity of the second through groove, a groove 23 is provided on the top of the sealing plate 21, and an L-shaped handle 24 is fixedly connected at the middle position of the inner cavity bottom of the groove 23, so as to facilitate buckling the sealing plate 21 out of the inner cavity of the second through groove, a connecting plate 20 is fixedly connected to the bottom of the sealing plate 21, and the bottom of the connecting plate 20 is fixedly connected to the drying box 16, and by pulling the sealing plate 21 upward, the drying box 16 can be driven to move upward synchronously through the connecting plate 20, so as to improve the convenience of replacing the desiccant in the drying box 16, an exhaust port 7 is provided on the left side of the second frame mouth portion 2, and a second filter screen 8 is provided in the inner cavity of the exhaust port 7.

[0025] A fixing groove is provided at the bottom of the inner cavity of the shell 13, and a lower magnet block 19 is provided in the inner cavity of the fixing groove. An upper magnet block 18 is magnetically attracted to the top of the lower magnet block 19, and the upper magnet block 18 is fixedly connected to the bottom of the drying box 16, thereby improving the stability of the drying box 16 during installation, thereby ensuring the drying effect of the air.

[0026] The cleaning mechanism includes two dust removal brushes 32, and the two dust removal brushes 32 are both fitted and arranged on the right side of the first filter screen 6. The adjacent sides of the two dust removal brushes 32 are fixedly connected to the same rotating rod 31. A through hole adapted to the rotating rod 31 is opened at the center of the circle on the first filter screen 6, and the left end of the rotating rod 31 passes through the inner cavity of the through hole and is rotatably connected to the left wall of the inner cavity of the first cavity 3. The vertical part of the second connecting pipe 11 and the partition 9 are both perforated, and the inner cavities of the two perforations slide through There is a same vertical rod 22, the bottom end of the vertical rod 22 is fixedly connected to the piston 25, and the top of the vertical rod 22 is fixedly connected to the rack 29, the outer wall of the vertical rod 22 is sleeved with a sealing ring 28, and the sealing ring 28 is fixedly connected to the top of the partition 9, and the outer wall of the rotating rod 31 is sleeved with a gear 30 meshing with the rack 29. When the internal air pressure of the refrigerator is lower than the external air pressure, and under the action of the pressure difference, the piston 25 rises and pushes the rack 29 to move upward through the vertical rod 22. The upward movement of the rack 29 drives the gear 30 to rotate, and the rotation of the gear 30 drives the rotating rod 31 to rotate. The rotation of the rotating rod 31 drives the dust removal brush 32 to rotate, and the dust attached to the outside of the first filter 6 is cleaned to ensure the frost prevention effect of the refrigerator.

[0027] Working principle: When the utility model is in use, the cover of the refrigerator is closed. At this time, the air pressure inside and outside the refrigerator is the same. The piston 25 slides downward under the action of gravity and moves down to the bottom of the air inlet pipe 12. At this time, the inner cavity of the second connecting pipe 11 can be blocked, and the air inlet 5 is prevented from being connected with the air outlet 7, that is, the connection between the inside and outside of the refrigerator is blocked to prevent cold leakage. As the temperature inside the refrigerator gradually decreases, the air pressure inside the refrigerator is lower than the external air pressure. Under the action of the pressure difference between the inside and outside of the refrigerator, the piston 25 moves upward. At this time, the air inlet 5 is connected with the air outlet 7, and the external air enters through the air inlet 5. To the inner cavity of the first connecting tube 10, and sterilized and odorized by the blue light sterilization lamp 27, and then the sterilized gas is transported into the inner cavity of the shell 13 through the second connecting tube 11 and the air inlet pipe 12, and the water vapor is adsorbed by the activated carbon particles in the drying box 16, and finally the dry air enters the interior of the refrigerator through the air outlet pipe 15 and the exhaust port 7, which serves the purpose of preventing frost. When the desiccant in the drying box 16 needs to be replaced, just hold the L-shaped handle 24 and drive the sealing plate 21 to move upward, so that the drying box 16 can be taken out from the second cavity 4 and replaced with new activated carbon particles.

Claims

1. A frost prevention cabinet opening structure for a direct cooling freezer, comprising a first frame opening portion (1) and a second frame opening portion (2) arranged at the lower left of the first frame opening portion (1), characterized in that: A first cavity (3) is provided below the first frame opening (1), and a partition (9) is fixedly connected to the inner cavity of the first cavity (3), a first connecting pipe (10) is fixedly passed through the partition (9) near the right side, and a second connecting pipe (11) is fixedly connected to the bottom of the partition (9) near the left side, and the first connecting pipe (10) and the second connecting pipe (11) are fixedly connected at one end adjacent to each other, an air inlet (5) is provided on the right side of the first frame opening (1), and a first filter (6) is provided on the left side of the inner cavity of the air inlet (5), and a cleaning mechanism is provided on the right side of the first filter (6), a piston (25) is slidably connected to the inner cavity of the second connecting pipe (11), and a limiting rod (26) is fixedly connected to the left side of the top of the piston (25), and a second cavity (4) communicating with the inner cavity of the first cavity (3) is provided at the bottom of the second frame opening (2), and a shell (13) is provided in the inner cavity of the second cavity (4), and an inlet is plugged and fixedly connected to the right side of the shell (13). The housing (13) is provided with an air duct (12), and the right end of the air inlet duct (12) is fixedly connected to the second connecting pipe (11), the left side of the housing (13) is plugged with an air outlet duct (15), and the four corners of the bottom of the housing (13) are fixedly connected with supporting legs (14), the bottom ends of the four supporting legs (14) are fixedly connected to the bottom of the inner cavity of the second cavity (4), the top of the housing (13) is provided with a first through groove, and the inner cavity of the first through groove is slidably penetrated by a drying box (16), and the drying box (16) is provided with a first through groove. The second frame opening (2) is provided with openings (17) on both sides thereof, the second frame opening (2) is provided with a second through slot having the same size as the first through slot on the top thereof, and a sealing plate (21) is slidably connected to the inner cavity of the second through slot, a connecting plate (20) is fixedly connected to the bottom of the sealing plate (21), and the bottom of the connecting plate (20) is fixedly connected to the drying box (16), an exhaust port (7) is provided on the left side of the second frame opening (2), and a second filter screen (8) is provided in the inner cavity of the exhaust port (7).

2. A frost prevention cabinet opening structure for a direct cooling freezer as claimed in claim 1, characterized in that: Blue light sterilization lamps (27) are provided on both left and right sides of the inner cavity of the vertical port of the first connecting tube (10).

3. A frost prevention cabinet opening structure for a direct cooling freezer as claimed in claim 1, characterized in that: The cleaning mechanism comprises two dust removal brushes (32), and the two dust removal brushes (32) are both fitted and arranged on the right side of the first filter (6). The adjacent sides of the two dust removal brushes (32) are fixedly connected to the same rotating rod (31). A through hole matching the rotating rod (31) is provided at the center of the upper circle of the first filter (6), and the left end of the rotating rod (31) passes through the inner cavity of the through hole and is rotatably connected to the left wall of the inner cavity of the first cavity (3). The vertical portion of the second connecting pipe (11) and the partition (9) are both provided with through holes, and the inner cavities of the two through holes are slidably penetrated by the same vertical rod (22), the bottom end of the vertical rod (22) is fixedly connected to the piston (25), and the top end of the vertical rod (22) is fixedly connected to a rack (29), and a gear (30) meshing with the rack (29) is sleeved and fixed on the outer wall of the rotating rod (31).

4. A frost prevention cabinet opening structure for a direct cooling freezer as claimed in claim 3, characterized in that: The outer wall of the vertical rod (22) is provided with a sealing ring (28), and the sealing ring (28) is fixedly connected to the top of the partition plate (9).

5. The frost prevention cabinet opening structure of a direct cooling freezer according to claim 1, characterized in that: A fixing groove is provided at the bottom of the inner cavity of the shell (13), and a lower magnet block (19) is provided in the inner cavity of the fixing groove. An upper magnet block (18) is magnetically attracted to the top of the lower magnet block (19), and the upper magnet block (18) is fixedly connected to the bottom of the drying box (16).

6. A frost prevention cabinet opening structure for a direct cooling freezer as claimed in claim 1, characterized in that: A groove (23) is provided on the top of the sealing plate (21), and an L-shaped handle (24) is fixedly connected to the middle position of the bottom of the inner cavity of the groove (23).

7. A frost prevention cabinet opening structure for a direct cooling freezer as claimed in claim 1, characterized in that: The left end of the limiting rod (26) is inserted into the inner cavity of the air inlet pipe (12) and is arranged to fit the bottom of the inner cavity of the air inlet pipe (12).

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