Ice blade assembly of an ice making machine

Abstract

The utility model provides an ice blade assembly of an ice maker, which is suitable for scraping ice cubes attached to the inner wall of an ice making cylinder and pushing them out under the drive of a driving device. The driving device includes a driving shaft, a blade shaft and a blade. The blade shaft includes a shaft body and a first connecting shaft and a second connecting shaft formed at both axial ends of the shaft body. The first connecting shaft and a part of the shaft body are provided with a ventilation channel, and the second connecting shaft is connected to the driving shaft through a spline sleeve. The blade is spirally wound around the shaft body, and the blade includes a blade body and a blade arranged on the outer periphery of the blade body. At least the outer surface of the blade is coated with a wear-resistant coating, and the blade body includes a material-facing surface and a material-receiving surface arranged opposite to each other, and an angle of 45° to 60° is formed between the blade and the inner wall of the ice making cylinder. In the utility model, the blade shaft is connected to the driving device through a spline sleeve, has good centering and guiding properties, and is adapted to the high requirements for centering accuracy when the ice blade is rotated to scrape the ice layer, and the specific position of the wear-resistant coating is reasonably set to protect the easily damaged part of the blade.

Description

Technical Field

[0001] The utility model belongs to the technical field of ice making machines, and in particular relates to an ice blade assembly of an ice making machine. Background Art

[0002] The ice blade of an ice maker is one of the key components, which is responsible for scraping the ice layer to form the required ice cubes. During the use and maintenance of the ice maker, the following technical problems are often encountered, such as (1) the ice blade will gradually wear out due to the continuous scraping action during use, resulting in a decrease in scraping efficiency. Therefore, it is necessary to improve its wear resistance and thus improve the durability of the ice blade; (2) The ability to scrape the ice layer evenly depends not only on the precise adjustment of the gap between the ice blade and the inner wall of the ice maker, but also on the stability of the rotation of the ice blade. Therefore, it is necessary to provide a transmission method that can achieve good neutrality, stability and load capacity, reduce the failure rate and extend the service life. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide an ice blade assembly for an ice maker to meet the needs of users.

[0004] To achieve the above object, the utility model provides an ice knife assembly for an ice maker, which is suitable for scraping ice cubes attached to the inner wall of an ice making cylinder and pushing them out under the drive of a driving device, wherein the driving device comprises a driving shaft, a knife shaft and a blade.

[0005] The knife shaft comprises a shaft body and a first connecting shaft and a second connecting shaft formed at two axial ends of the shaft body, the first connecting shaft and a part of the shaft body are provided with a flow passage, and the second connecting shaft is transmission-connected to the drive shaft via a spline sleeve;

[0006] The blade is spirally wound around the shaft, and includes a blade body and a blade edge arranged on the outer periphery of the blade body. At least the outer surface of the blade edge is coated with a wear-resistant coating. The blade body includes a material-facing surface and a material-receiving surface arranged opposite to each other, and an angle of 45° to 60° is formed between the blade and the inner wall of the ice-making cylinder.

[0007] Preferably, the second connecting shaft and the driving shaft respectively include at least six rectangular splines, and the spline sleeve includes a corresponding number of keyways.

[0008] Preferably, the end of the rectangular spline is provided with a chamfer to facilitate assembly, making it easier to insert the second connecting shaft into the corresponding spline sleeve, while reducing stress concentration and improving the durability and reliability of the connection.

[0009] Preferably, the ventilation flow channel includes a ventilation main path arranged along its axial direction and a plurality of ventilation branches arranged along its radial direction, the ventilation main path passes through the first connecting shaft and extends to part of the shaft body, at least one of the ventilation branches is arranged on the first connecting shaft, and at least two of the ventilation branches are not arranged parallel to each other.

[0010] As a preferred embodiment, the second ventilation branch is arranged on the shaft body, and the two ventilation branches are perpendicular to each other.

[0011] Preferably, the pitch of the blade gradually increases along the direction from the second connecting shaft to the first connecting shaft to prevent ice cubes from sticking and improve the conveying efficiency of ice cubes.

[0012] As a preferred embodiment, the inner periphery of the blade body is welded to the blade shaft, and transition fillets are formed between the material-facing surface and the material-backing surface and the outer surface of the blade shaft respectively.

[0013] Preferably, the wear-resistant coating is a diamond coating, and the thickness of the wear-resistant coating is between 0.1 mm and 1 mm.

[0014] Preferably, the wear-resistant coating comprises a first wear-resistant layer suitable for covering the blade, a second wear-resistant layer suitable for covering the front surface and a third wear-resistant layer suitable for covering the back surface, and the thicknesses of the first wear-resistant layer, the second wear-resistant layer and the third wear-resistant layer decrease successively.

[0015] Preferably, the thickness of the second wear-resistant layer gradually decreases along a direction approaching the shaft body.

[0016] The beneficial effects of the utility model are:

[0017] (1) The blade shaft is connected to the drive device through a spline sleeve, which has good centering and guiding properties. It is suitable for the high requirements of centering accuracy when the ice blade is rotating to scrape the ice layer. The spline connection is more evenly stressed, with less stress concentration and high load-bearing capacity, which is beneficial to improving the strength and service life of the ice blade assembly.

[0018] (2) The blade has an angle of 45° to 60° relative to the inner wall of the ice making cylinder, which is conducive to keeping the blade edge sharp and creating a greater affinity between the ice layer and the blade, so that the scraping work remains stable. At the same time, the ice layer is easy to fall into the material surface adjacent to the blade and be discharged.

[0019] (3) By rationally setting the specific position of the diamond wear-resistant coating, the parts of the blade that are easily damaged are protected. Furthermore, the thickness of the diamond wear-resistant layer smoothly transitions according to the wear resistance of the blade, thereby reducing the material conveying resistance, saving the material of the diamond wear-resistant layer, and achieving a low-cost and high-efficiency effect.

[0020] (4) Ventilation channels are provided, especially a plurality of incompletely parallel ventilation branches are provided to assist in exhausting the inside of the ice making cylinder, thereby solving the problem of ice blockage and freezing inside the ice making cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model provides a structural schematic diagram of an ice blade assembly of an ice maker.

[0022] Figure 2 for Figure 1 A magnified schematic diagram of a local area.

[0023] Figure 3 The utility model provides a cross-sectional schematic diagram of an ice blade assembly of an ice maker.

[0024] In the figure, the shaft 101, the first connecting shaft 102, the second connecting shaft 103, the blade body 104, the blade edge 105, the material-facing surface 106, the material-receiving surface 107, the ventilation main passage 108, the ventilation branch passage 109, the rectangular spline 110, the chamfer 111, and the transition fillet 112. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0027] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0028] like Figure 1-3 The invention discloses an ice blade assembly of an ice maker, which is suitable for scraping ice cubes attached to the inner wall of an ice making cylinder and pushing them out under the drive of a driving device. The driving device comprises a driving shaft, a blade shaft and a blade.

[0029] In this embodiment, the knife shaft includes a shaft body 101 and a first connecting shaft 102 and a second connecting shaft 103 formed at both axial ends of the shaft body 101. A ventilation flow channel is opened in the first connecting shaft 102 and a part of the shaft body 101. The ventilation flow channel includes a ventilation main channel 108 arranged along its axial direction and a plurality of ventilation branches 109 arranged along its radial direction. The ventilation main channel 108 passes through the first connecting shaft 102 and extends to a part of the shaft body 101. At least one of the ventilation branches 109 is arranged on the first connecting shaft 102, and the other two ventilation branches 109 are arranged on the shaft body 101, and the two ventilation branches 109 are perpendicular to each other.

[0030] In this embodiment, the second connecting shaft 103 is connected to the driving shaft through a spline sleeve. The second connecting shaft 103 and the driving shaft respectively include six rectangular splines 110. The ends of the rectangular splines 110 are provided with rounded ends 111, which facilitates assembly and makes it easier for the second connecting shaft 103 to be inserted into the corresponding spline sleeve, while reducing stress concentration and improving the durability and reliability of the connection. The spline sleeve includes a corresponding number of keyways.

[0031] In this embodiment, the blade is spirally wound around the shaft 101, and the blade includes a blade body 104 and a blade edge 105 arranged on the outer periphery of the blade body 104. The inner periphery of the blade 105 body is welded to the blade shaft. The blade 105 body includes a material-facing surface 106 and a material-receiving surface 107 arranged opposite to each other. A transition fillet 112 is formed between the material-facing surface 106 and the material-receiving surface 107 and the outer surface of the blade shaft respectively, and an angle of 45° to 60° is formed between the blade 105 and the inner wall of the ice-making cylinder.

[0032] In some other embodiments, the pitch of the blade gradually increases along the direction from the second connecting shaft 103 to the first connecting shaft 102 to prevent ice cubes from sticking and improve the conveying rate of ice cubes.

[0033] In this embodiment, the outer surface of the blade is coated with a wear-resistant coating (not shown in the figure), which is a diamond coating, and the thickness of the wear-resistant coating is between 0.1 mm and 1 mm. Specifically, the wear-resistant coating includes a first wear-resistant layer suitable for covering the blade 105, a second wear-resistant layer suitable for covering the material-facing surface 106, and a third wear-resistant layer suitable for covering the material-backing surface 107. Since the linear velocity of the blade 105 is too large during rotation, it is more likely to be worn. Therefore, the thickness of the first wear-resistant layer, the second wear-resistant layer, and the third wear-resistant layer are successively thinned. Along the direction close to the shaft body 101, the vulnerability of the material-facing surface 106 is continuously reduced, and the thickness of the second wear-resistant layer is also gradually reduced.

[0034] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. An ice blade assembly of an ice maker, which is suitable for scraping ice cubes attached to the inner wall of an ice making cylinder and pushing them out under the drive of a driving device, wherein the driving device comprises a driving shaft, characterized in that: Including knife shaft and blade, The knife shaft comprises a shaft body and a first connecting shaft and a second connecting shaft formed at two axial ends of the shaft body, the first connecting shaft and a part of the shaft body are provided with a flow passage, and the second connecting shaft is transmission-connected to the drive shaft via a spline sleeve; The blade is spirally wound around the shaft, and includes a blade body and a blade edge arranged on the outer periphery of the blade body. At least the outer surface of the blade edge is coated with a wear-resistant coating. The blade body includes a material-facing surface and a material-receiving surface arranged opposite to each other, and an angle of 45° to 60° is formed between the blade and the inner wall of the ice-making cylinder.

2. The ice blade assembly of an ice maker according to claim 1, characterized in that: The second connecting shaft and the driving shaft each include at least six rectangular splines, and the spline sleeve includes a corresponding number of keyways.

3. The ice blade assembly of an ice maker according to claim 2, characterized in that: The ends of the rectangular splines are provided with chamfers.

4. The ice blade assembly of an ice maker according to claim 3, characterized in that: The ventilation flow channel includes a ventilation main path arranged along its axial direction and a plurality of ventilation branches arranged along its radial direction. The ventilation main path passes through the first connecting shaft and extends to part of the shaft body. At least one of the ventilation branches is arranged on the first connecting shaft, and at least two of the ventilation branches are not arranged parallel to each other.

5. The ice blade assembly of an ice maker according to claim 4, characterized in that: The second ventilation branch is arranged on the shaft body, and the two ventilation branches are perpendicular to each other.

6. An ice blade assembly for an ice maker according to any one of claims 1 to 5, characterized in that: The pitch of the blade gradually increases along the direction from the second connecting axis to the first connecting axis.

7. The ice blade assembly of an ice maker according to claim 6, characterized in that: The inner periphery of the blade body is welded to the blade shaft, and transition fillets are formed between the material-facing surface and the material-backing surface and the outer surface of the blade shaft respectively.

8. The ice blade assembly of an ice maker according to claim 7, characterized in that: The wear-resistant coating is a diamond coating, and the thickness of the wear-resistant coating is between 0.1 mm and 1 mm.

9. The ice blade assembly of an ice maker according to claim 8, characterized in that: The wear-resistant coating comprises a first wear-resistant layer suitable for covering the blade, a second wear-resistant layer suitable for covering the front surface and a third wear-resistant layer suitable for covering the back surface. The thicknesses of the first wear-resistant layer, the second wear-resistant layer and the third wear-resistant layer decrease successively.

10. The ice blade assembly of an ice maker according to claim 9, characterized in that: The thickness of the second wear-resistant layer gradually decreases along a direction approaching the shaft body.

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