Bearing sealing structure of ice maker evaporator

Abstract

The utility model relates to the technical field of ice-making machines, and provides a bearing sealing structure of an ice-making machine evaporator, which comprises an oil seal arranged in an ice-making inner barrel, and a bearing and an ice blade screw are arranged in the ice-making inner barrel; the ice blade screw rod is rotationally arranged in the ice-making inner barrel and is used for scraping an ice layer on the inner wall of the ice-making inner barrel; the bearing sleeves the periphery of the ice skate blade screw rod, and the bearing and the ice skate blade screw rod are in limiting running fit; the oil seal is arranged on the periphery of the ice skate blade screw and arranged at the bottom of the bearing, and the inner periphery of the oil seal is in sealing fit with the periphery of the ice skate blade screw to form a first-circle sealing structure so as to prevent lubricating oil of the bearing from leaking along a gap between the oil seal and the ice skate blade screw. According to the ice skate blade screw, the oil seal is arranged below the bearing, the oil seal and the ice skate blade screw are in sealing fit to form a first-circle sealing structure, lubricating oil of the bearing is effectively prevented from leaking along a gap between the oil seal and the ice skate blade screw, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of ice makers, specifically to a bearing sealing structure for an ice maker evaporator. Background Technology

[0002] The ice maker evaporator includes an inner ice-making barrel and an outer barrel fitted around it. An ice-blade screw is mounted on the inner ice-making barrel, and a gearbox connected to a motor is mounted on the outer side of the inner ice-making barrel. The ice-blade screw is driven by the output shaft of the gearbox. When the ice-blade screw scrapes the ice layer from the inner ice-making barrel, it experiences forces in both the left-right and up-down directions. As it pushes the ice against the extrusion head, causing the ice to be extruded from the ice outlet, the ice-blade screw experiences a reverse force—a downward thrust. If the ice-blade screw is not reliably secured, the scraping and extruding forces can cause it to move erratically. Furthermore, the downward thrust during ice making can press against the gearbox assembly, potentially damaging it.

[0003] Therefore, the inner ice-making barrel needs to be equipped with a bearing to limit the movement of the ice blade screw. When the inner ice-making barrel is equipped with a bearing, a bearing lubrication and sealing mechanism is required to prevent the bearing lubricating oil from leaking outward. Utility Model Content

[0004] This invention proposes a bearing sealing structure for an ice maker evaporator. An oil seal is located below the bearing on the ice blade screw. The oil seal and the ice blade screw form a first-ring sealing structure, effectively preventing lubricating oil leakage along the gap between the oil seal and the ice blade screw. The oil seal is positioned at the bottom of the bearing, preventing lubricating oil from flowing downwards and ensuring sufficient lubrication of the bearing during long-term operation of the ice blade screw. This extends the bearing's service life and reduces wear between the ice blade screw and the bearing during ice making.

[0005] A bearing sealing structure for an ice maker evaporator designed for this purpose includes an oil seal disposed inside the ice-making inner barrel, and the ice-making inner barrel is provided with a bearing and an ice blade screw.

[0006] The ice blade screw is rotatably mounted inside the ice-making inner barrel and is used to scrape off the ice layer on the inner wall of the ice-making inner barrel.

[0007] The bearing is sleeved on the outer circumference of the ice skate screw, and the bearing and the ice skate screw form a limiting rotational fit;

[0008] The oil seal is sleeved on the outer circumference of the ice skate screw and located at the bottom of the bearing. The inner circumference of the oil seal and the outer circumference of the ice skate screw are sealed together to form the first ring of sealing structure to prevent the lubricating oil of the bearing from leaking along the gap between the oil seal and the ice skate screw.

[0009] The oil seal is provided with a sealing lip that abuts against the outer periphery of the ice blade screw;

[0010] The sealing lip has a ring-shaped structure.

[0011] The ice skate screw is provided with a limiting step, and the bearing and oil seal are arranged vertically along the axial length of the ice skate screw, with the bearing being limited vertically between the limiting step and the oil seal of the ice skate screw.

[0012] The ice-making inner barrel is equipped with a bracket for fixing and installing the bearing and oil seal. The bracket forms an anti-detachment structure to prevent the bearing and oil seal from coming out of the ice-making inner barrel.

[0013] The outer circumference of the oil seal abuts against the inner circumference of the bracket, and the outer circumference of the oil seal and the inner circumference of the bracket form a sealing fit to form a second sealing structure to prevent the lubricating oil of the bearing from leaking along the gap between the oil seal and the bracket.

[0014] The outer periphery of the oil seal is provided with a sealing rib that abuts against the inner periphery of the bracket.

[0015] The sealing ribs are arranged in several rings, and these rings of sealing ribs are arranged at intervals along the height direction of the oil seal on the outer periphery of the oil seal.

[0016] The bracket is provided with a first groove, and the bearing is limited and installed on the first groove.

[0017] The bracket is provided with a second groove; the second groove is located below the first groove, and the oil seal is installed on the second groove. At least part of the oil seal abuts against the inner circumference of the second groove, and a sealing fit is formed between the oil seal and the second groove.

[0018] The upper part of the bracket is inserted into the ice-making inner bucket, and the upper part of the bracket is fixedly connected to the ice-making inner bucket.

[0019] The beneficial technical effects of this utility model are as follows:

[0020] The ice skate screw has an oil seal located below the bearing. The oil seal and the ice skate screw form the first sealing ring, effectively preventing lubricating oil from leaking through the gap between the oil seal and the ice skate screw. The oil seal is positioned at the bottom of the bearing, preventing lubricating oil from flowing downwards and ensuring sufficient lubrication of the bearing during long-term operation of the ice skate screw. This extends the bearing's lifespan and reduces wear between the ice skate screw and the bearing during ice making. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the ice-making inner bucket according to an embodiment of the present invention.

[0022] Figure 2 This is an exploded view of the assembly structure of the ice-making inner bucket, ice blade screw, bearing and oil seal according to an embodiment of the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of an oil seal according to an embodiment of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of a bracket according to an embodiment of the present invention.

[0025] Figure 5 This is a three-dimensional cross-sectional structural diagram of a bracket fixing oil seal and bearing according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic cross-sectional view of an oil seal according to an embodiment of the present invention. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0028] See Figures 1-6 A bearing sealing structure for an evaporator of an ice maker includes an oil seal 2 disposed inside an ice-making inner barrel 3, and a bearing 1 and an ice blade screw 4 disposed inside the ice-making inner barrel 3.

[0029] The ice blade screw 4 is rotatably mounted inside the ice-making inner barrel 3 and is used to scrape off the ice layer on the inner wall of the ice-making inner barrel 3.

[0030] The bearing 1 is sleeved on the outer periphery of the ice skate screw 4, and the bearing 1 and the ice skate screw 4 form a limiting rotational fit.

[0031] The oil seal 2 is sleeved on the outer circumference of the ice skate screw 4 and set at the bottom of the bearing 1. The inner circumference of the oil seal 2 is sealed to the outer circumference of the ice skate screw 4 to form the first ring of sealing structure, so as to prevent the lubricating oil of the bearing 1 from leaking along the gap between the oil seal 2 and the ice skate screw 4.

[0032] An oil seal is installed below the bearing on the ice skate screw. The oil seal 2 and the ice skate screw 4 form a first-ring sealing structure, effectively preventing the lubricating oil of the bearing 1 from leaking along the gap between the oil seal 2 and the ice skate screw 4. The oil seal 2 is located at the bottom of the bearing 1, which can block the lubricating oil from flowing downward, ensuring that the bearing 1 maintains sufficient lubrication during the long-term operation of the ice skate screw 4, extending the service life of the bearing 1, and reducing the wear between the ice skate screw 4 and the bearing 1 during the ice-making process.

[0033] The oil seal 2 is provided with a sealing lip that abuts against the outer periphery of the ice blade screw 4;

[0034] The sealing lip has a ring-shaped structure.

[0035] The sealing lip of oil seal 2 features a ring-shaped structure design, which allows it to tightly fit the outer circumference of the ice blade screw 4, forming a ring-shaped seal. The elastic deformation capability of the sealing lip enables it to accommodate minor radial runout or axial movement of the ice blade screw 4, ensuring reliable sealing.

[0036] The ice skate screw 4 is provided with a limiting step 8. The bearing 1 and the oil seal 2 are arranged vertically along the axial length of the ice skate screw 4, and the bearing 1 is limited vertically between the limiting step 8 and the oil seal 2 of the ice skate screw 4.

[0037] The limiting step 8 ensures that the bearing 1 and oil seal 2 are axially fixed on the ice blade screw 4, preventing the screw 4 from moving up and down during ice scraping or squeezing. The bearing 1 is confined between the limiting step 8 and the oil seal 2, preventing displacement or loosening due to axial force and ensuring transmission stability. The oil seal 2 is installed at the bottom of the bearing 1, further optimizing the sealing effect and preventing lubricant leakage. This structure simplifies the assembly process of the ice blade screw 4, while reducing the risk of gearbox assembly damage due to axial force transmission, thus improving the overall reliability of the ice maker.

[0038] The ice-making inner barrel 3 is provided with a bracket 5 for fixing the bearing 1 and the oil seal 2. The bracket 5 forms an anti-detachment structure to prevent the bearing 1 and the oil seal 2 from coming out of the ice-making inner barrel 3.

[0039] The bracket 5 serves as a fixing carrier for the bearing 1 and the oil seal 2, and its anti-detachment structure prevents them from coming out of the ice-making inner bucket 3, thus enhancing the overall structural stability. The installation method of the bracket 5 allows for more precise positioning of the bearing 1 and the oil seal 2, ensuring the durability of the sealing performance.

[0040] The outer periphery of the oil seal 2 abuts against the inner periphery of the bracket 5, and the outer periphery of the oil seal 2 and the inner periphery of the bracket 5 form a second sealing structure to prevent the lubricating oil of the bearing 1 from leaking along the gap between the oil seal 2 and the bracket 5.

[0041] The second sealing structure between the outer circumference of oil seal 2 and the inner circumference of bracket 5 further blocks the lubricating oil leakage path, forming a double sealing guarantee. This design effectively prevents lubricating oil from seeping out from the mating gap between oil seal 2 and bracket 5, ensuring the airtightness of the lubrication environment of bearing 1. The second sealing structure works synergistically with the first sealing structure to significantly improve the sealing effect, especially suitable for high-load or high-speed conditions. In addition, this structure reduces lubricating oil consumption, extends the lubrication cycle, reduces maintenance frequency, and improves the economy and durability of the bearing sealing structure of the ice maker evaporator.

[0042] The oil seal 2 has a sealing rib 9 on its outer periphery that abuts against the inner periphery of the bracket 5.

[0043] The design of the sealing rib 9 enhances the contact tightness between the oil seal 2 and the inner circumference of the bracket 5, forming multiple sealing barriers. The elastic deformation capacity of the sealing rib 9 can compensate for manufacturing tolerances or assembly errors, ensuring a tight fit between the sealing surfaces, further preventing lubricating oil leakage, and improving sealing reliability.

[0044] The sealing ribs 9 are provided in several rings, and the several rings of sealing ribs 9 are arranged at intervals along the height direction of the oil seal 2 on the outer periphery of the oil seal 2.

[0045] Multiple sealing ribs 9 are distributed along the height of the oil seal 2, forming a stepped sealing structure. Each sealing rib 9 functions independently; even if a single rib fails, the remaining ribs 9 can still maintain the sealing effect, improving the system's fault tolerance. The multi-ring design can also accommodate larger axial or radial deviations, ensuring that the sealing surfaces are always in close contact. This structure further reduces the risk of lubricating oil leakage.

[0046] The bracket 5 is provided with a first groove 6, and the bearing 1 is limited and installed on the first groove 6.

[0047] The first groove 6 provides precise mounting positioning for the bearing 1, ensuring the coaxiality of the bearing 1 and the ice skate screw 4, and reducing wear caused by eccentric operation. The groove structure restricts the radial displacement of the bearing 1, enhancing its load-bearing capacity, and is particularly suitable for lateral force conditions experienced by the ice skate screw 4. The high machining precision of the first groove 6 facilitates the quick installation and replacement of the bearing 1, while reducing the impact of assembly errors on sealing performance, thus improving the assembly efficiency and service life of the bearing sealing structure of the ice maker evaporator.

[0048] The bracket 5 is provided with a second groove 7; the second groove 7 is located below the first groove 6, and the oil seal 2 is limited and installed on the second groove 7. At least part of the oil seal 2 abuts against the inner circumference of the second groove 7, and a sealing fit is formed between the oil seal 2 and the second groove 7.

[0049] The second groove 7 provides a stable mounting base for the oil seal 2, ensuring the concentricity of the oil seal 2 and the ice blade screw 4, and optimizing the sealing effect. The cooperation between the oil seal 2 and the second groove 7 forms a third line of defense for sealing, further blocking the leakage path of lubricating oil. The groove structure also prevents the oil seal 2 from shifting under axial force, ensuring continuous tight contact between the sealing lip and the ice blade screw 4. This design simplifies the installation process of the oil seal 2 and improves the sealing reliability and maintenance convenience of the bearing sealing structure of the ice maker evaporator.

[0050] The upper part of the bracket 5 is inserted into the ice-making inner bucket 3, and the upper part of the bracket 5 is fixedly connected to the ice-making inner bucket 3. The fixed connection between the upper part of the bracket 5 and the ice-making inner bucket 3 enhances the rigidity of the overall structure and prevents the components from loosening due to vibration or impact.

[0051] In this embodiment, a fastening hole for inserting screws is provided between the bracket 5 and the ice-making inner bucket 3.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bearing seal structure for an ice maker evaporator, characterized by: Including the oil seal (2) arranged in the ice-making inner barrel (3), the ice-making inner barrel (3) is provided with a bearing (1) and an ice knife screw rod (4); The ice knife screw rod (4) is rotatably arranged in the ice-making inner barrel (3) and used for scraping the ice layer on the inner wall of the ice-making inner barrel (3); The bearing (1) is sleeved on the outer periphery of the ice knife screw rod (4), and the bearing (1) and the ice knife screw rod (4) form a limited rotation fit; The oil seal (2) is sleeved on the outer periphery of the ice knife screw rod (4) and arranged at the bottom of the bearing (1), and the inner periphery of the oil seal (2) is in sealing fit with the outer periphery of the ice knife screw rod (4) and forms a first circle of sealing structure.

2. The bearing seal structure for an ice maker evaporator as set forth in claim 1, wherein: The oil seal (2) is provided with a sealing lip abutting on the outer periphery of the ice knife screw rod (4); The sealing lip is in annular structure.

3. The bearing seal structure for an ice maker evaporator as set forth in claim 1, wherein: The ice knife screw rod (4) is provided with a limiting step (8), the bearing (1) and the oil seal (2) are arranged on the ice knife screw rod (4) in up-down arrangement along the axial length of the ice knife screw rod (4), and the bearing (1) is limited between the limiting step (8) of the ice knife screw rod (4) and the oil seal (2) in up-down direction.

4. The bearing seal structure for an ice maker evaporator as set forth in claim 1, wherein: The ice-making inner barrel (3) is provided with a support (5) for fixedly mounting the bearing (1) and the oil seal (2), and the support (5) forms an anti-extrusion structure for preventing the bearing (1) and the oil seal (2) from extruding out of the ice-making inner barrel (3).

5. The bearing seal structure for an ice maker evaporator as set forth in claim 4, wherein: The outer periphery of the oil seal (2) abuts on the inner periphery of the support (5), and the outer periphery of the oil seal (2) is in sealing fit with the inner periphery of the support (5) and forms a second circle of sealing structure.

6. The bearing seal structure for an ice maker evaporator as set forth in claim 5, wherein: The outer periphery of the oil seal (2) is provided with a sealing rib (9) abutting on the inner periphery of the support (5).

7. The bearing seal structure for an ice maker evaporator as set forth in claim 6, wherein: The sealing rib (9) is provided with a plurality of circles, and the plurality of circles of the sealing rib (9) are arranged on the outer periphery of the oil seal (2) in up-down interval along the height direction of the oil seal (2).

8. The bearing seal structure for an ice maker evaporator as set forth in claim 4, wherein: The support (5) is provided with a first groove (6), and the bearing (1) is limitedly mounted on the first groove (6).

9. The bearing seal structure for an ice maker evaporator as set forth in claim 8, wherein: The support (5) is provided with a second groove (7); the second groove (7) is located below the first groove (6), the oil seal (2) is limitedly mounted on the second groove (7), at least part of the oil seal (2) abuts on the inner periphery of the second groove (7), and the oil seal (2) and the second groove (7) form a sealing fit.

10. The bearing seal structure for an ice maker evaporator as set forth in claim 4, wherein: The upper part of the support (5) is inserted into the ice-making inner barrel (3), and the upper part of the support (5) is fixedly connected with the ice-making inner barrel (3).

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