Ice scraping and stirring mechanism and ice product making device

Abstract

The present specification provides a kind of ice scraping stirring mechanism and ice product making equipment, it is related to the technical field of cooking equipment, wherein the ice scraping stirring mechanism is applied to ice product making equipment, ice product making equipment includes evaporator, the ice scraping stirring mechanism includes stirring vane and at least three scraping strips, stirring vane is distributed along the circumference of evaporator, each scraping strip is spaced distribution along the circumference of evaporator, and it is respectively connected to the inside of stirring vane, to jointly enclose the space for accommodating evaporator, let the overall structural strength of mechanism also be correspondingly promoted, the spacing of two scraping strips in any adjacent along circumference in circumferential direction is not equal, so that the connection of each scraping strip and stirring vane is naturally staggered along axial direction, avoid the problem that local ice crystal cannot be scraped off and accumulates condensation caused by the connection between each scraping strip and stirring vane concentrated in the same axial position, scraping strip is provided with scraping structure on the relative two sides along circumference, break the limitation that scraper is only single-sided in related art and lead to single scraping direction.

Description

Technical Field

[0001] This manual relates to the technical field of cooking equipment, and in particular to an ice-scraping and stirring mechanism and ice-making equipment. Background Technology

[0002] Ice-making equipment (such as smoothie machines and home ice cream machines) is a type of equipment that rapidly cools materials using refrigeration components and, in conjunction with a stirring mechanism, refines ice crystals to produce smoothies, ice cream, and other ice-based desserts. Generally, the equipment's production chamber contains an evaporator. The evaporator achieves low-temperature output through a refrigeration system, rapidly cooling the liquid materials within the chamber. Simultaneously, an ice-scraping and stirring mechanism within the production chamber rotates around the evaporator, scraping away ice crystals condensed on the evaporator's surface and mixing the scraped ice crystals with the materials, ultimately forming a smooth and uniform ice-based dessert.

[0003] In related technologies, the support structure design of the ice-scraping and stirring mechanism is relatively simple. The support structure is distributed circumferentially to form an integral frame, and the scraper is only set on one side of the support structure, which can only clean the evaporator surface when the mechanism rotates in one direction. Furthermore, the support structure is prone to deformation due to the limitations of the injection molding process. This leads to an increase in the clearance between the scraper and the evaporator surface, preventing some ice crystals from being scraped off in time. These ice crystals adhere to the evaporator surface for a long time and condense into large ice blocks, which can then jam the spiral blades of the ice-scraping and stirring mechanism, causing equipment blockage and seriously affecting the normal operation of the equipment. The design of the scraper being set on only one side of the support structure also results in a single scraping direction, easily creating obvious scraping dead zones. It cannot cover the entire circumference and axial range of the evaporator, leading to uneven ice crystal removal. Residual ice crystals in some areas affect the smoothness of the ice cream and reduce the user experience. Utility Model Content

[0004] To overcome the problems existing in related technologies, this specification provides an ice scraping and stirring mechanism and ice-making equipment, which aims to solve the problems of ice crystal accumulation caused by the low structural strength of the ice scraping and stirring mechanism, as well as the existence of dead corners and uneven ice scraping.

[0005] According to an embodiment of this specification, an ice-scraping and stirring mechanism is provided, applied to an ice-making equipment, the ice-making equipment including an evaporator, and the ice-scraping and stirring mechanism comprising: Stirring blades, the stirring blades being distributed circumferentially along the evaporator; At least three scraper blades are provided, each of which is distributed at intervals along the circumference of the evaporator and is connected to the inner side of the stirring blades, so as to jointly enclose and form a space for accommodating the evaporator. The spacing between any two adjacent scrapers along the circumferential direction is not equal. The scraper is provided with scraping structures on both sides of the circumferential direction. The two scraping structures are used to scrape off the ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates forward and reverse.

[0006] Currently, the support structure design of the ice scraping and stirring mechanism in related technologies is relatively simple. It is not only easily deformed due to the limitations of the injection molding process, which leads to an increase in the gap between the scraper and the evaporator, making it impossible to scrape ice crystals in time and causing them to condense into large ice blocks and block the equipment, but also because the scraper is only set on one side of the support structure, the scraping direction is unidirectional and forms obvious dead corners, which cannot cover the entire circumference and axial range of the evaporator, resulting in uneven ice scraping, affecting the smoothness of the ice products and reducing the user experience.

[0007] The ice-scraping and stirring mechanism of this application uses stirring blades as the overall support foundation. The stirring blades, distributed along the circumference of the evaporator, provide a stable assembly carrier for the scrapers, ensuring the controllability of the positional relationship and movement trajectory of each component. Crucially, at least three scrapers are connected at intervals along the circumference of the evaporator to the inner side of the stirring blades, collectively forming a space to accommodate the evaporator. Compared to related technologies, this ice-scraping and stirring mechanism increases both the contact support surface between the mechanism and the evaporator and the connection support points between the scrapers and the stirring blades. This effectively disperses the torque and ice crystal impact force during the ice-scraping process, correspondingly improving the overall structural strength of the mechanism, reducing the risk of deformation, and further reducing the clearance between the scrapers and the evaporator. This prevents ice crystal accumulation that can lead to prolonged adhesion and condensation into large ice blocks, avoiding equipment blockage and ensuring its normal operation.

[0008] The unequal spacing between any two adjacent scraper blades along the circumference creates a synergistic relationship between support reinforcement and prevention of excessive ice crystal buildup. This unequal spacing ensures that the connections between each scraper blade and the stirring blade are naturally staggered axially, avoiding the problem of localized ice crystal buildup and condensation caused by the connections being concentrated in the same axial position. This further mitigates the potential for ice crystal residue caused by increased clearance. Furthermore, the scraping structures on both sides of the scraper blades along the circumference are adapted to both forward and reverse rotation of the ice-scraping and stirring mechanism. This overcomes the limitation of related technologies where scrapers are only installed on one side, resulting in a single scraping direction. When the ice-scraping and stirring mechanism rotates forward, the scraping structure on one side of the scraper blade adheres to the evaporator surface to scrape away ice crystals. When the ice-scraping and stirring mechanism rotates in reverse, the scraping structure on the other side of the scraper blade takes over, forming a scraping logic covering the entire rotation direction. This completely eliminates scraping dead zones, reduces ice crystal residue, improves the smoothness of the ice cream, and enhances the user experience.

[0009] In some exemplary embodiments of this disclosure, the two scraping structures are respectively a first scraping surface and a second scraping surface disposed on opposite sides of the scraper along the circumferential direction; The inner side of the scraper has a first inner arc surface that matches the surface of the evaporator. One edge of the first scraping surface and the second scraping surface are respectively connected to the first inner arc surface, and the distance between the first scraping surface and the second scraping surface gradually narrows from the inner side of the scraper to the outer side, so that the first scraping surface and the second scraping surface form an acute angle with the tangent of the first inner arc surface at the connection point.

[0010] In this type of embodiment, the first inner arc surface on the inner side of the scraper matches the evaporator surface, ensuring that the scraper remains in close contact with the evaporator surface during rotation, structurally reducing the possibility of ice crystals remaining from the gaps. The first and second scraping surfaces on opposite sides of the scraper along the circumference have one edge seamlessly connected to the first inner arc surface, and the distance between the first and second scraping surfaces gradually narrows from the inner side of the scraper to the outer side. This change in distance directly causes the tangents of the first and second scraping surfaces to form acute angles with the first inner arc surface at the connection point, resulting in both scraping surfaces tilting outwards. This tilting posture of the scraping surfaces is adapted to the forward and reverse rotation of the ice-scraping and stirring mechanism. When the ice-scraping and stirring mechanism rotates forward, the tilting direction of the first scraping surface is consistent with the rotation direction, allowing it to smoothly cut into the contact surface between the ice crystals and the evaporator. When the mechanism rotates in reverse, the second scraping surface takes over with an acute angle, forming a cutting angle adapted to the reverse direction, achieving seamless coordination of scraping from both sides. The first scraping surface, the second scraping surface and the first inner arc surface with gradually narrowing spacing form an approximately triangular structure, which also enhances the rigidity of the scraper itself, reduces the deformation of the scraping surface caused by long-term stress, maintains the fitting accuracy and scraping effect after long-term use, indirectly reduces the risk of blockage caused by scraper deformation in ice cream making equipment, and further consolidates the stability of equipment operation.

[0011] In summary, the structural matching between the first inner arc surface and the evaporator, by using multiple scrapers to reduce the gap between the parts, further improves the fitting precision and completely solves the problem of ice crystal residue caused by gaps in related technologies. Secondly, the sharp-angled scraping surface has less cutting resistance, enabling efficient ice crystal removal through guiding force, avoiding incomplete ice crystal breakage due to uneven force, and reducing mechanical wear during the scraping process. Furthermore, the double-sided scraping surface and sharp-angle design ensure consistent scraping efficiency and thoroughness when the ice-scraping stirring mechanism rotates forward and backward. Combined with multiple scrapers and unequal spacing, this further eliminates scraping dead zones and improves the uniformity of ice scraping throughout the evaporator's circumference and axis.

[0012] In some exemplary embodiments of this disclosure, the first scraping surface and the tangent of the first inner arc surface at the connection point form a first angle, and the second scraping surface and the tangent of the first inner arc surface at the connection point form a second angle; The first included angle is greater than or less than the second included angle.

[0013] In this type of embodiment, the first included angle is formed by the tangent at the connection point of the first scraping surface and the first inner arc surface, and the second included angle is formed by the tangent at the connection point of the second scraping surface and the first inner arc surface. The first and second included angles are of different sizes, creating a differentiated tilt design based on the fact that both scraping surfaces are acute angles. Since the contact angle and force direction between the scraping surface and the ice crystals differ when the ice-scraping and stirring mechanism rotates forward and backward, making the first and second included angles unequal allows for a distinction in the tilt degree of the first and second scraping surfaces, respectively catering to the ice crystal stripping requirements under different rotation directions, making the scraping action of both scraping surfaces more targeted.

[0014] By employing a differentiated angle design, the ice-scraping adaptability of the ice-scraping and stirring mechanism is further refined for both forward and reverse rotation. Compared to a uniform angle, it can more accurately match the ice-scraping resistance and ice crystal adhesion state under different rotation directions, improving the smoothness of ice scraping in all directions. Furthermore, the differentiated tilt allows for a more reasonable distribution of the cutting depth and force component between the first and second scraping surfaces in the corresponding rotation directions. This enables more efficient removal of ice crystals with varying adhesion strengths, avoiding the problem of incomplete scraping or excessive resistance in one direction due to a uniform angle. While maintaining double-sided scraping and close contact, it further enhances the targeted and efficient nature of the ice-scraping action, continuously reducing the risk of ice crystal residue and accumulation, consolidating the operational stability of the ice-making equipment, and making the ice particles more uniform and delicate, further improving the user experience.

[0015] In some exemplary embodiments of this disclosure, a first scraping edge extending axially along the evaporator is formed between the first scraping surface and the first inner arc surface, and a second scraping edge extending axially along the evaporator is formed between the second scraping surface and the first inner arc surface. The first scraper edge is used to scrape off ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates forward, and the second scraper edge is used to scrape off ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates in reverse.

[0016] In this type of embodiment, the first scraping edge is formed by the connection of the first scraping surface and the first inner arc surface, and the second scraping edge is formed by the connection of the second scraping surface and the first inner arc surface. Both extend along the evaporator axis and play a scraping role corresponding to the forward and reverse rotation of the ice-scraping stirring mechanism, respectively. Since the ice-scraping stirring mechanism needs to peel off ice crystals through the first scraping surface when rotating forward and needs to take over through the second scraping surface when rotating in reverse, the connection between the two and the first inner arc surface forms a dedicated first scraping edge and a second scraping edge. This allows the scraping action to be more concentrated on a clear contact edge. At the same time, the axial extension setting also ensures that no axial area of ​​the evaporator is missed during the ice-scraping process, making the ice-scraping action more directional and comprehensive.

[0017] The specialized first and second scraping edges allow for more concentrated contact between the first and second scraping surfaces and the evaporator, enhancing the localized ice-scraping pressure between the respective scraping surfaces and the first inner arc surface. This results in more efficient removal of ice crystals adhering to the evaporator surface, resolving the issue of ice crystal residue caused by dispersed scraping force. Furthermore, both the first and second scraping edges extend along the entire axial direction, and the combination of multiple scrapers and unequal spacing between any two adjacent scrapers thoroughly covers the entire circumference and axial direction of the evaporator, further eliminating scraping dead zones, ensuring more uniform ice crystal removal, and maintaining a more consistent smoothness in the ice cream, thus further improving the user experience.

[0018] In some exemplary embodiments of this disclosure, the scraper extends axially along the evaporator, and the scraper at least partially extends through opposite sides of the stirring blade along the axial direction at its connection with the stirring blade.

[0019] In this type of embodiment, the axially extending structure of the scraper provides a basis for covering the entire axial direction of the evaporator. Its extension shape also creates structural conditions for a through-type connection, allowing the connection between the scraper and the stirring blade to form a deep connection along the axial direction. The through-type connection, based on the axially extended shape, further enhances the connection stability between the scraper and the stirring blade. During the scraping process, the scraper needs to withstand continuous torque and ice crystal impact force. The axially extended structure allows the force to be evenly distributed along the scraper's axis, avoiding localized force concentration. Furthermore, by penetrating both sides of the stirring blade, the force on the scraper can be more evenly transferred to the stirring blade by increasing its contact area and connection depth with the stirring blade. At the same time, it constrains the relative displacement of the two, reduces the deformation space, and solves the problem of incomplete axial coverage during ice scraping.

[0020] Secondly, the method of connecting the scraper blade through the stirring blade also greatly improves the overall structural strength of the ice scraping and stirring mechanism, effectively disperses the stress load at the connection point, avoids loosening or breakage caused by local overload, and improves the defect of insufficient connection strength in related technologies.

[0021] In addition, this connection method can reduce the distance between the scraper and the inner side of the stirring blade, making the ice scraping coverage more complete. At the same time, it reduces the gap between the stirring blade and the evaporator, further reducing the possibility of deformation of both, reducing the risk of ice crystals accumulating and condensing in the gap, structurally eliminating the hidden danger of equipment blockage, and continuously ensuring the stability of equipment operation.

[0022] In some exemplary embodiments of this disclosure, the scraper and the stirring blade are integrally formed; The inner side of the scraper and the inner side of the stirring blade together form an inner arc surface that matches the surface of the evaporator.

[0023] In this type of embodiment, the scraper and the stirring blade are integrally molded, which eliminates the splicing gap between the scraper and the stirring blade from the source. This provides structural uniformity for the inner sides of the two to form an inner arc surface together. The design of the common inner arc surface is based on the integrity of the integrally molded structure, which allows the contact surface to be fully adapted to the shape of the evaporator and avoids fitting deviation caused by splicing misalignment.

[0024] The one-piece molding not only creates a stable overall load-bearing structure for the scraper and stirring blades, enhancing their overall structural rigidity and effectively resisting the torque and ice crystal impact during the rotating ice scraping process, further reducing the risk of structural deformation and consolidating the stability of equipment operation, but also ensures the contour accuracy of the common inner arc surface, making the curvature of the contact surface continuous and uniform. The two support each other, ensuring structural strength and improving fitting accuracy, achieving seamless fitting between the ice scraping and stirring mechanism and the evaporator, and solving the problem of ice crystal residue caused by splicing gaps.

[0025] In addition, the common inner arc surface makes the ice-scraping contact area between the ice-scraping stirring mechanism and the evaporator more complete. Combined with the circumferential distribution of multiple scrapers and the design of unequal spacing, it completely eliminates the dead corners of scraping, making the ice crystals scraped more evenly and continuously ensuring the smoothness of the ice cream.

[0026] In some exemplary embodiments of this disclosure, there are three stirring blades, which are distributed circumferentially around the evaporator and are all spiral structures that spiral around the circumference and extend spirally along the axial direction of the evaporator. There are three scraper blades, and each scraper blade intersects and connects with the stirring blades at different axial positions in the evaporator.

[0027] In this type of embodiment, the structure of the three spiral stirring blades can be precisely adapted to the columnar profile of the evaporator. The axial spiral extension allows the stirring blades to form a three-dimensional frame, which not only provides a stable support for the entire ice scraping and stirring mechanism, effectively resisting the torque and material impact during the rotation and stirring process, but also significantly reduces the risk of structural deformation, further reduces the gap between the scraper and the evaporator, reduces the risk of equipment blockage caused by ice crystal accumulation and condensation from the root, and gives the ice scraping and stirring mechanism an axial guiding function when rotating.

[0028] The non-one-to-one correspondence between the three scrapers and the stirring blades is entirely achieved by relying on the spiral extension shape of the stirring blades. Since the stirring blades are spirally distributed along the axial direction, they will naturally form connection points with the scrapers at different axial heights. The scrapers connect with each stirring blade at these different axial positions, forming a many-to-many connection relationship where one scraper corresponds to three stirring blades and one stirring blade corresponds to three scrapers. This fully utilizes the spatial extension characteristics of the spiral structure, allowing the connection points to be staggered along both the axial and circumferential directions. The many-to-many cross connection method ensures that each scraper is fixed to the stirring blade through multiple connection points. The connection points are evenly distributed along the axial and circumferential directions, resulting in more dispersed force. This not only strengthens the overall structural stability of the mechanism but also avoids loosening or breakage caused by overload of a single connection point.

[0029] In addition, the spiral stirring blades drive the material to flow axially when rotating. Combined with the scraping action of the three scrapers at different axial positions and the advantage of no concentrated dead corners due to the staggered connection points, uniform ice scraping is achieved throughout the circumference and axial direction of the evaporator, completely eliminating local ice crystal residue. At the same time, the axial flow of the material allows the ice crystals to mix more fully with the material, further improving the smoothness of the ice cream.

[0030] According to embodiments of this specification, an ice cream making apparatus is also provided, comprising: body; A container is detachably assembled to the machine body, and a hollow manufacturing cavity is formed inside the manufacturing container, with an evaporator installed inside the manufacturing cavity; As described above, the ice-scraping stirring mechanism is rotatably disposed within the production chamber, and the stirring blades and scraper of the ice-scraping stirring mechanism are distributed circumferentially along the evaporator so that the stirring blades and scraper can move around the evaporator.

[0031] Currently, the assembly and coordination between the ice scraping and stirring mechanism and the overall equipment is not reasonable enough. This not only makes it difficult to fully utilize the structural advantages of the ice scraping and stirring mechanism, but also causes inconvenience in cleaning and maintenance. This further amplifies the potential problems of the gap between the ice scraping and stirring mechanism and the evaporator, exacerbates problems such as ice crystal accumulation and blockage, and uneven scraping, and affects the overall performance of the equipment.

[0032] In the ice-making equipment of this application, the machine body serves as the core assembly carrier, providing a stable installation reference for the production container and the ice-scraping and stirring mechanism. The production container is detachably assembled to the machine body, and the hollow production cavity formed inside it provides an independent and suitable installation space for the evaporator and the ice-scraping and stirring mechanism. The evaporator is fixedly installed inside the production cavity, serving as the ice-forming component and providing the object of action for the ice-scraping action. The ice-scraping and stirring mechanism is rotatably installed inside the production cavity, and its stirring blades and scraper strips are distributed circumferentially around the evaporator, enabling it to achieve full-circumferential motion around the evaporator.

[0033] The detachable design of the machine body and the production container solves the problem of inconvenient internal cleaning in related technologies. Users can easily disassemble the production container for thorough cleaning, improving hygiene and convenience. Secondly, the precise positioning of the evaporator and ice-scraping stirring mechanism in the production chamber effectively ensures the matching accuracy of the two, further reducing the gap between the scraper and the evaporator. Combined with the high-strength, low-deformation design of the ice-scraping stirring mechanism itself, the risk of blockage caused by ice crystal accumulation and condensation is avoided from the overall equipment level, ensuring long-term stable operation of the equipment.

[0034] In addition, the layout of the ice scraping and stirring mechanism, which moves around the evaporator, can give full play to its structural advantages of scraping in all directions and along all axes. Combined with multiple scraping strips and scraping structures on both sides of the scraping strips, it can completely eliminate scraping dead corners, making the ice crystals scraped more evenly and significantly improving the smoothness of the ice cream.

[0035] In some exemplary embodiments of this disclosure, there are three stirring blades, which are distributed circumferentially around the evaporator and are all spiral structures extending spirally along the axial direction of the evaporator. There are three scraper blades, each of which extends along the axial direction of the evaporator and intersects and connects with each of the stirring blades at different axial positions. Each of the stirring blades has a connecting blade at the end away from the machine body. Each connecting blade is fixedly connected to each of the scrapers, and the connecting blades are connected to each other.

[0036] In this type of embodiment, the structure of three helical stirring blades serves as the supporting foundation of the ice-scraping stirring mechanism. Their circumferentially spaced distribution adapts to the columnar contour of the evaporator, while their axially helical extension provides staggered connection points for the scraper strips. The axial extension design of the scraper strips not only adapts to the axial shape of the evaporator but also creates a spatial interweaving with the helical structure of the stirring blades. By intersecting with each stirring blade at different axial positions, a many-to-many cross-connection relationship is established, allowing the force to be evenly distributed along the axial and circumferential directions. The connecting blades target the weak support areas at the far end of the stirring blades, far from the body. On one hand, they strengthen the connection stability by fixing to the scraper strips; on the other hand, they connect with each other, forming a closed integral structure at the far end of the three stirring blades and three scraper strips, creating a complete three-dimensional force-bearing frame. This prevents the far end from swaying or deforming due to force during the rotation of the ice-scraping stirring mechanism, significantly improving the mechanism's resistance to torque and ice crystal impact, and further reducing the risk of structural deformation.

[0037] The way in which each scraper blade intersects and connects with each stirring blade at different axial positions not only creates a seamless integrated structure between the stirring blades and the scraper blades, but also ensures that the scraping dead angles of each scraper blade on the evaporator are staggered. Combined with the guiding effect of the spiral stirring blades and the full axial coverage of the evaporator by the scraper blades, this further improves the uniformity of ice scraping around the entire circumference and along the entire axis of the evaporator, avoiding local ice crystal residue.

[0038] In some exemplary embodiments of this disclosure, each of the connecting blades is provided with an extrusion structure on the side opposite to the scraper; The production chamber is provided with a discharge port at one end away from the machine body. The extrusion structure is disposed opposite to the side wall of the production chamber where the discharge port is located, and the surface of the extrusion structure is parallel to the side wall where the discharge port is located.

[0039] In this type of embodiment, the connecting blades continue the end-bonding function, forming a stable whole between the stirring blades and the scraper, providing a reliable mounting carrier for the extrusion structure. Their interconnected overall shape ensures that the extrusion structure can rotate smoothly and synchronously with the stirring blades. Furthermore, the side of the connecting blades facing away from the scraper provides a suitable mounting orientation for the extrusion structure, allowing it to be precisely aligned with the discharge port area of ​​the production chamber. The discharge port of the production chamber provides a channel for material discharge, and the design of the extrusion structure being opposite and parallel to the discharge chamber wall ensures that a uniform gap is formed between the extrusion structure and the chamber wall during rotation, avoiding interference while generating an effective extrusion force.

[0040] As the extrusion structure rotates with the mixing blades, it uniformly compresses the material within the production chamber, propelling it towards the discharge port. This prevents material from accumulating and condensing in the discharge port area, solving the problems of easy clogging and ice crystal residue. Furthermore, the surface design of the extrusion structure parallel to the discharge chamber wall ensures more uniform extrusion force, guaranteeing smooth material discharge while also assisting in scraping away residual material adhering to the chamber wall, thus improving cleaning convenience.

[0041] In addition, the connecting blades provide stable support for the extrusion structure, preventing structural shaking or deformation during extrusion and ensuring continuous and stable extrusion. Combined with the scraping function of the ice scraping and stirring mechanism, the ice crystals are fully mixed with the materials and discharged smoothly, further improving the smoothness of the ice cream and the output efficiency.

[0042] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0043] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0044] Figure 1 This is a schematic diagram of the overall structure of the ice cream making equipment shown in the embodiments of this specification; Figure 2 This is an axial sectional view of the ice cream making equipment shown in the embodiments of this specification; Figure 3 This is a schematic diagram showing the ice-scraping and stirring mechanism in conjunction with the evaporator, as illustrated in the embodiments of this specification. Figure 4 This is a schematic diagram of the ice-scraping and stirring mechanism shown in the embodiments of this specification; Figure 5 This is a radial cross-sectional view of the ice-scraping and stirring mechanism and the evaporator shown in the embodiments of this specification.

[0045] Explanation of reference numerals in the attached figures 10. Stirring blade; 11. Second inner arc surface; 20. Scraper; 21. Scraping structure; 211. First scraping surface; 212. Second scraping surface; 213. First inner arc surface; 214. First scraping edge; 215. Second scraping edge; 40. Connecting blade; 41. Support shaft hole; 50. Support ring; 60. Extrusion structure; 70. Machine body; 80. Manufacturing container; 81. Manufacturing chamber; 82. Discharge port; 90. Evaporator. Detailed Implementation

[0046] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0047] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0048] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0049] In this disclosure, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, if two directions are perpendicular, it can be understood that the angle between the two directions can be 90° ± 5°.

[0050] Ice cream making equipment is a common type of equipment that can quickly cool and stir liquid raw materials to form delicate ice cream, shaved ice, and other shaved ice products. It typically includes a machine body, a detachable production container mounted on the machine body, an evaporator set inside the production container, and a rotating ice scraping and stirring mechanism. The evaporator is used to cool and freeze the raw materials in the production container, while the ice scraping and stirring mechanism moves around the evaporator, scraping off the ice crystals condensed on the surface of the evaporator and thoroughly stirring them with the raw materials to ultimately form a uniform and delicate ice cream product.

[0051] As can be seen from the background technology, the ice-scraping and stirring mechanisms in related ice-making equipment generally suffer from unreasonable structural design problems. For example, insufficient support strength leads to easy deformation, and excessive clearance between the mechanism and the evaporator causes ice crystal residue to accumulate, potentially leading to equipment blockage. Furthermore, the unidirectional scraping direction and incomplete coverage of the ice-scraping and stirring mechanism create dead zones for ice crystal removal on the evaporator, affecting the smoothness of the ice, the operational stability of the equipment, and the user experience.

[0052] In view of this, this embodiment provides an ice-scraping and stirring mechanism, which aims to solve the problems of insufficient structural strength and easy deformation, many dead corners in the scraping, and easy blockage due to ice crystal residue in the ice-scraping and stirring mechanism. By reasonably designing the connection method between the stirring blade 10 and the scraper 20, the scraping structure 21 and the overall layout, the structural stability, ice scraping thoroughness and operational reliability of the mechanism are improved, thereby ensuring the stable operation of the ice-making equipment and the quality of ice products, and better meeting the user's needs.

[0053] Please refer to the instruction manual attached. Figures 2-5 The ice-scraping and stirring mechanism provided in this embodiment is mainly used in ice-making equipment. The ice-making equipment includes an evaporator 90 for refrigeration and freezing. The ice-scraping and stirring mechanism is installed in the production chamber 81 of the equipment and can rotate around the evaporator 90 to achieve the coordinated operation of ice crystal scraping and material stirring.

[0054] The ice-scraping and stirring mechanism mainly includes stirring blades 10 distributed circumferentially along the evaporator 90, and at least three scraper strips 20 spaced apart circumferentially along the evaporator 90 and connected to the inner side of the stirring blades 10. The scraper strips 20 together enclose a space to accommodate the evaporator 90. The circumferential spacing between any two adjacent scraper strips 20 is unequal, and each scraper strip 20 has a scraping structure 21 on opposite sides circumferentially. The two scraping structures 21 are used to scrape ice crystals off the surface of the evaporator 90 when the ice-scraping and stirring mechanism rotates forward and reverse, respectively.

[0055] Specifically, the stirring blade 10 serves as the supporting foundation for the entire ice-scraping and stirring mechanism. Its function is to provide a stable mounting carrier for the scraper 20, ensuring that the scraper 20 maintains its predetermined trajectory and precise alignment with the evaporator 90 during the ice-scraping process. The number of stirring blades 10 can be adjusted adaptively according to the specifications of the ice-making equipment and the size of the evaporator 90. For example, for small household ice cream machines, three stirring blades 10 can be set to balance support stability and structural lightness; for large commercial smoothie machines, four, five, six, or more stirring blades 10 can be set to further enhance the overall structural load-bearing capacity. The structural form of the stirring blade 10 is not limited to a single type and can be set as a straight plate, arc, or spiral shape, etc., according to actual usage requirements. Among them, the straight plate-shaped stirring blade 10 has a relatively simple structure, so it is easier to process and has a lower cost; the arc-shaped stirring blade 10 can be adapted to the contour of the evaporator 90 so that the stirring blade 10 can fit the contour of the evaporator 90 better, which is conducive to improving the material stirring efficiency; the spiral-shaped stirring blade 10 can drive the material to form an axial flow when rotating, which improves the stirring uniformity.

[0056] Understandably, the inner side of the stirring blade 10 (i.e., the side near or facing the evaporator 90) has a pre-installed adapter structure for connecting with the scraper 20. The connection method can be selected according to assembly requirements and usage scenarios. For example, an integrated molding process allows the stirring blade 10 and the scraper 20 to be injection molded simultaneously, resulting in higher structural strength and less deformation; welding fixation is suitable for metal structures, providing strong connection; bolt fastening or snap-fit ​​connection facilitates the disassembly and replacement of the scraper 20 later, reducing maintenance costs.

[0057] The design of at least three scraper blades 20 is fundamental to achieving full circumferential coverage of the evaporator 90 for ice removal. The selection of the number of scraper blades 20 is based on ensuring the structural strength of the ice-scraping and stirring mechanism, and on the core principle of fully covering the circumference of the evaporator 90 and avoiding blind spots in ice removal. The number of scraper blades 20 is not limited to three, four, five, or six. For example, three scraper blades 20 can meet the basic scraping requirements of a conventionally sized evaporator 90, and can achieve circumferential coverage without dead angles through reasonable distribution. Five scraper blades 20 are suitable for evaporators 90 with larger diameters, which can further reduce the maximum spacing between adjacent scraper blades 20 and reduce the probability of ice crystals remaining in the gaps. All scraper blades 20 are distributed at intervals along the circumference of the evaporator 90 and are fixedly connected to the inner side of the stirring blade 10. The connection points between each scraper blade 20 and the stirring blade 10 need to be reasonably arranged along the axial direction of the evaporator 90 to avoid the problem of ice removal dead angles and local overload caused by concentration in the same axial position. For example, taking a horizontal ice cream making equipment as an example, the axial direction of its evaporator 90 is horizontal. Each scraper 20 can form 2-3 connection points with the stirring blade 10 at different lengths along the axial direction, allowing for more even force distribution. Furthermore, because the connection points between the stirring blade 10 and the scraper 20 may weaken the ice-scraping effect to varying degrees due to the relatively small gap between them, the connection points of each scraper 20 with the stirring blade 10 are staggered in the axial direction to avoid overlapping circumferentially and creating blind spots in ice scraping. The spatial contour formed by the scrapers 20 is adapted to the shape of the evaporator 90. If the evaporator 90 is cylindrical, the enclosed space is correspondingly cylindrical; if the evaporator 90 is conical, the enclosed space is designed to be conical, ensuring uniform and consistent clearance between the scraper 20 and the surface of the evaporator 90, providing structural assurance for efficient ice crystal removal.

[0058] In addition, in some embodiments, the length of the scraper 20 needs to be greater than or equal to the axial length of the evaporator 90 to ensure that the scraper 20 can extend from one end of the evaporator 90 to the other end when rotating, covering the entire axial range, and avoiding blank scraping in local areas of the axial region due to insufficient length.

[0059] To ensure that the connection points between each scraper 20 and the stirring blade 10 are staggered in the axial direction, this embodiment adopts a method in which the spacing between any two adjacent scrapers 20 in the circumferential direction is not equal. This aims to solve the problem that in the uniform spacing layout of the scrapers 20, the connection points between each scraper 20 and the stirring blade 10 tend to concentrate in the same axial position, which leads to the inability to remove ice crystals in the area in time and their accumulation and condensation. The specific implementation scheme can be flexibly adjusted according to the number of scraper strips 20. For example, in an implementation scheme using three scraper strips 20, the circumferential spacing between any two adjacent scraper strips 20 can be designed to be 60°, 120°, or 180°, and no two sets of adjacent spacings will overlap. In an implementation scheme using four scraper strips 20, the circumferential spacing between any two adjacent scraper strips 20 can be designed to be 50°, 100°, 120°, or 90°, breaking the limitations of uniform layout through staggered distribution. In an implementation scheme using five scraper strips 20, the circumferential spacing between any two adjacent scraper strips 20 can be designed to be 40°, 80°, 100°, 110°, or 30°.

[0060] As can be seen from the above, the connection point between the scraper 20 and the stirring blade 10 weakens the ice-scraping effect. For example, if the distance between the inner side of the stirring blade 10 and the scraper 20 is too small, the scraping surface of the scraper 20 at the connection point with the stirring blade 10 is small, making it difficult to achieve a normal ice-scraping effect. Especially in embodiments where the stirring blade 10 adopts a spiral structure and there are multiple stirring blades 10, since each stirring blade 10 is generally evenly distributed along the circumference of the evaporator 90 and extends evenly along the axial direction of the evaporator 90, if all scraper 20 are evenly distributed along the outer circumference of the evaporator 90, the connection points between each scraper 20 and the corresponding spiral blade will have the same axial position. Therefore, this embodiment adopts a staggered distribution of scraper strips 20 so that the scraping trajectories of each scraper strip 20 complement each other, avoiding the formation of fixed scraping blind spots. At the same time, it ensures that there are no concentrated accumulation points of ice crystals on the circumferential distribution of the evaporator 90, and that ice crystals in each area can be scraped off by adjacent scraper strips 20 in a timely manner, reducing the risk of long-term adhesion and condensation into large ice blocks.

[0061] The scraping structure 21 is provided on both sides of the scraper 20 along the circumference, which breaks the limitation of the single scraping direction of the ice-scraping stirring mechanism and realizes bidirectional scraping adaptation under forward and reverse operation. The form of the scraping structure 21 can be adjusted according to the ice-scraping requirements and material characteristics. For example, the scraping structure 21 can be set as a scraping surface on one side of the scraper 20, with the scraping surface and the inner side of the scraper 20 (the side surface of the scraper 20 near the evaporator 90) forming an acute angle. When the ice-scraping stirring mechanism rotates forward, the scraping surface can accurately cut into the contact surface between the ice crystal and the evaporator 90, and efficiently peel off the ice crystal using shearing force; when rotating in reverse, the scraping surface on the other side takes over with the same acute angle design to ensure consistent scraping effect. For example, for highly viscous materials, the scraping structure 21 can be set as an arc-shaped scraping surface, with the arc contour completely fitting the surface of the evaporator 90, forming surface contact scraping in both forward and reverse operation, which not only improves scraping efficiency but also prevents material from adhering to the surface of the scraping structure 21.

[0062] The ice-scraping and stirring mechanism of this embodiment addresses the core defects existing in related technologies through the above-described structural design. Regarding structural stability, the stirring blades 10 and at least three scraper strips 20 are interconnected through multiple connection points, significantly increasing the overall structural strength of the ice-scraping and stirring mechanism. This effectively disperses the torque and ice crystal impact force generated during ice scraping, reducing the risk of deformation due to injection molding limitations or long-term use. Furthermore, it reduces the clearance between the scraper strips 20 and the evaporator 90, fundamentally preventing ice crystal residue caused by excessive clearance. In terms of scraping effect, the circumferential distribution of the multiple scraper strips 20, combined with their axial extension, achieves full circumference and axial coverage scraping of the evaporator 90. The dual-sided scraping structure 21 breaks the limitation of unidirectional scraping, allowing the ice-scraping and stirring mechanism to operate efficiently in both forward and reverse rotation, completely eliminating scraping dead angles. The unequal spacing between adjacent scraper blades 20 avoids the problem of localized ice crystal accumulation caused by the connection points between each scraper blade 20 and the stirring blade 10 being concentrated in the same axial position. This further eliminates the possibility of large ice blocks forming, ensuring that ice crystals can be scraped off promptly and completely, preventing them from adhering to the surface of the evaporator 90 for extended periods and condensing into large ice blocks. This effectively prevents the ice-scraping and stirring mechanism from getting stuck, significantly reducing the incidence of equipment stall failures and ensuring the normal and continuous operation of the equipment. Furthermore, the omnidirectional, thorough scraping of ice crystals allows them to be evenly peeled off from the evaporator 90. Combined with the coordinated stirring of the stirring blade 10 and scraper blades 20, the ice crystals are thoroughly mixed with the materials, preventing large, residual ice crystals from affecting the smoothness of the ice cream. This significantly improves the uniformity and taste of the final ice cream, comprehensively enhancing the user experience.

[0063] Please refer to the instruction manual attached. Figure 5Based on the above-mentioned scraping structure 21 being set as a scraping surface located on one side of the scraper 20, in one embodiment, the two scraping structures 21 are respectively a first scraping surface 211 and a second scraping surface 212 located on opposite sides of the scraper 20 along the circumferential direction. Furthermore, the inner side of the scraper 20 has a first inner arc surface 213 that matches the surface structure of the evaporator 90. One edge of the first scraping surface 211 and the second scraping surface 212 is connected to the first inner arc surface 213, and the distance between them gradually narrows from the inner side of the scraper 20 to the outer side, so that the tangent of the first scraping surface 211 and the first inner arc surface 213 at the connection point, and the tangent of the second scraping surface 212 and the first inner arc surface 213 at the connection point respectively form acute angles, thereby enhancing the ice crystal scraping effect under forward and reverse rotation conditions.

[0064] Specifically, the first inner arc surface 213 is the basic structure for achieving a tight fit between the scraper 20 and the evaporator 90. Its function is to ensure that the scraper 20 always fits against the surface of the evaporator 90, providing a stable scraping reference for the first scraping surface 211 and the second scraping surface 212, and ensuring that the scraping action can accurately act on the ice crystals on the surface of the evaporator 90. The first inner arc surface 213 needs to perfectly fit the outer contour of the evaporator 90. If the evaporator 90 is cylindrical, the radius of curvature of the first inner arc surface 213 is equal to the outer diameter of the evaporator 90 to ensure uniform fitting gap throughout the circumference; if the evaporator 90 is conical, the first inner arc surface 213 is set as a corresponding conical arc surface, gradually adapting to the diameter change of the evaporator 90 along the axial direction; if the surface of the evaporator 90 has slight protrusions or grooves, the first inner arc surface 213 can also be designed with corresponding concave and convex structures to avoid excessive fitting gap. The material of the first inner arc surface 213 can be selected according to the application requirements. For example, soft silicone can be used to further reduce the fitting gap by utilizing its elastic deformation, adapting to the slight errors on the surface of the evaporator 90; hard nylon can improve wear resistance and extend service life, making it especially suitable for high-frequency commercial equipment. In terms of processing technology, it can be directly integrally formed with the scraper 20 body through injection molding to ensure the contour accuracy of the first inner arc surface 213.

[0065] The first scraping surface 211 and the second scraping surface 212, as structures that directly perform the scraping action, determine the ice crystal scraping effect of the ice-scraping and stirring mechanism under forward and reverse rotation conditions by their connection method with the first inner arc surface 213 and the distance between them. One edge of both the first scraping surface 211 and the second scraping surface 212 is connected to the first inner arc surface 213. The connection method can be integral molding, so that the scraping surface and the first inner arc surface 213 form a seamless connection, avoiding ice crystals getting stuck at the connection point; or it can be fixed by welding or bonding, which is suitable for the combination design of different materials, such as the connection between the metal scraping surface and the plastic first inner arc surface 213. The connection position must extend along the entire axial direction of the first inner arc surface 213 to ensure that when the scraper 20 rotates with the ice-scraping and stirring mechanism, both the first scraping surface 211 and the second scraping surface 212 can cover the ice crystals along the entire axial direction of the evaporator 90.

[0066] In some implementations, if there is severe ice crystal accumulation in a specific area, the first scraping surface 211 and the second scraping surface 212 can also adopt a segmented connection design, with longer connection segments set in areas where ice crystals are prone to accumulate, to enhance the local scraping effect.

[0067] On the same scraper 20, the distance between the first scraping surface 211 and the second scraping surface 212 gradually narrows from the inside to the outside of the scraper 20. The first scraping surface 211 and the second scraping surface 212 form an inward tilt angle by narrowing the distance between them. This angle naturally forms an acute angle with the tangent at the connection point of the first inner arc surface 213. This tilt angle allows the corresponding scraping surface to form a shearing force when it comes into contact with the ice crystals during the forward or reverse rotation of the ice scraping and stirring mechanism, rather than simply squeezing. This makes it easier to peel the ice crystals off the surface of the evaporator 90.

[0068] It should be understood that the narrowing of the distance between the first scraping surface 211 and the second scraping surface 212 can be flexibly adjusted according to actual needs. For example, the distance on the inner side of the scraper 20 (the side closer to the evaporator 90) can be set to 5mm, and the distance on the outer side can be set to 2mm, forming a clear narrowing gradient, which is suitable for scraping thicker ice crystals. For thin ice crystals, the inner distance can be set to 3mm and the outer distance to 1.5mm, which reduces scraping resistance while ensuring the scraping effect. Furthermore, in some embodiments, the narrowing trajectory of the first scraping surface 211 and the second scraping surface 212 is not limited to a straight line. They can be designed to narrow in a slightly arc shape, making the tilt angle of the first scraping surface 211 and the second scraping surface 212 gentler, avoiding sharp edges from scratching the surface of the evaporator 90. They can also be designed to narrow in a zigzag shape, with a smaller narrowing in the area near the first inner arc surface 213 and a larger narrowing in the outer area, balancing fit and scraping force.

[0069] The first scraping surface 211 and the second scraping surface 212 form acute angles with the tangents of the first inner arc surface 213 at the connection point. The size of the acute angle can be designed comprehensively by considering factors such as the hardness of the ice crystals and the rotation speed of the ice scraping and stirring mechanism, and is usually not limited to the range of 30°-60°. For example, for softer, easier-to-peel ice crystals, the acute angle can be set to 45°-60° to reduce equipment operating noise while ensuring scraping efficiency; for harder, more firmly attached ice crystals, the acute angle can be set to 30°-45° to enhance the cutting force and ensure complete removal of the ice crystals.

[0070] In summary, the precise matching between the first inner arc surface 213 and the evaporator 90 further reduces the gap between the scraper 20 and the evaporator 90, solving the problem of ice crystal residue on the evaporator 90. The acute angle structure formed by the narrowing distance between the first scraping surface 211 and the second scraping surface 212 significantly improves the efficiency and thoroughness of ice crystal removal. The shearing force generated by the acute angle can quickly cut into the contact surface between the ice crystal and the evaporator 90, completely peeling off the attached ice crystal, avoiding ice crystal compression deformation or residue caused by excessive scraping surface angle. It is especially suitable for ice crystal removal scenarios with different hardness.

[0071] In addition, the first scraping surface 211 and the second scraping surface 212 correspond to the forward and reverse rotation conditions, respectively. The double-sided acute angle design allows the ice-scraping and stirring mechanism to maintain a high-efficiency scraping effect in both rotation directions, breaking the limitation of scraping in a single direction. Combined with the layout design of unequal spacing between any two adjacent scraper strips 20 in the above embodiment, the scraping dead corners of the ice-scraping and stirring mechanism are further eliminated, ensuring the smoothness of the ice cream.

[0072] Please continue to refer to the instruction manual appendix. Figure 5 In order to gain a more comprehensive understanding of this embodiment, in one embodiment, the angle formed by the tangents of the first scraping surface 211 and the first inner arc surface 213 at the connection point is defined as the first included angle α1, and the angle formed by the tangents of the second scraping surface 212 and the first inner arc surface 213 at the connection point is defined as the second included angle β1.

[0073] Specifically, the first included angle is greater than or less than the second included angle. Through the differentiated design of the first included angle and the second included angle, it can adapt to the different scraping needs under the forward and reverse working conditions of the ice scraping and stirring mechanism, thereby improving the targeting and thoroughness of ice crystal scraping in different scenarios.

[0074] The formation of the first and second included angles is based on the structure provided in the above-described embodiments. The difference in size between the first and second included angles is not adjusted independently, but rather achieved by finely adjusting the narrowing range and connection angle of the two scraping surfaces. Essentially, the connection reference of the first scraping surface 211 and the second scraping surface 212 is consistent with that of the first inner arc surface 213. The difference in size of the included angles is achieved only by changing their respective narrowing gradients or tilt directions. For example, if the narrowing range between the inner and outer sides of the first scraping surface 211 is 3mm, the corresponding first included angle is 45°; then the narrowing range of the second scraping surface 212 can be adjusted to 4mm, making the second included angle 35°, forming a 10° angle difference. Conversely, if it is desired that the first included angle is smaller than the second included angle, the narrowing range of the second scraping surface 212 can be increased, or the narrowing range of the first scraping surface 211 can be decreased, flexibly adjusting the relationship between the included angles.

[0075] The specific values ​​of the first and second included angles need to be comprehensively adjusted in conjunction with the actual working conditions such as the forward and reverse rotation speed of the ice scraping and stirring mechanism, the adhesion strength of ice crystals, and the characteristics of materials. They must always be kept within the acute angle range (e.g., 30°-60°) to ensure the shearing force effect of the corresponding scraping surface.

[0076] For example, when the first scraping surface 211 corresponds to the forward rotation direction of the ice scraping and stirring mechanism, and the second scraping surface 212 corresponds to the reverse rotation direction, the first included angle can be set to 50° and the second included angle can be set to 35°. The first included angle is larger than the second included angle, which is suitable for scenarios where the forward rotation speed is relatively fast and a large amount of ice crystals need to be scraped efficiently, while the reverse rotation speed is slower and the focus is on cleaning up the remaining thin layer of ice crystals. The larger first included angle can reduce the scraping resistance during forward rotation and improve the stirring efficiency, while the smaller second included angle can enhance the cutting force during reverse rotation and completely peel off the remaining ice crystals. As another example, the first included angle can be set to 30° and the second included angle can be set to 45°. The first included angle is smaller than the second included angle, which is suitable for scenarios where the forward rotation needs to handle firmly attached thick layers of ice crystals, while the reverse rotation focuses on material mixing and light scraping. The smaller first included angle provides stronger shearing force to ensure that the thick layer of ice crystals is completely peeled off, while the larger second included angle reduces the material stirring resistance during reverse rotation, allowing the ice crystals and materials to mix more evenly. For example, the first included angle can be set to 40° and the second included angle can be set to 55°, with the angle difference controlled at around 15°. This balances the scraping strength and stirring smoothness of both forward and reverse rotation, making it suitable for general-purpose ice cream making equipment and adaptable to the production needs of various materials (such as ice cream, smoothies, fruit purees, etc.).

[0077] Besides the narrowing radius, the tilt trajectory of the scraping surface also affects the angle, thus achieving differentiated design. For example, the first scraping surface 211 uses a straight narrowing trajectory, forming a first angle of 42°; the second scraping surface 212 uses a slightly curved narrowing trajectory, making the scraping surface tilt more gentle, with a corresponding second angle of 53°. The difference in trajectory naturally creates a difference in the angle size. This design can simultaneously take into account the angle difference and the fit of the scraping surface, avoiding interference or excessive gaps between the scraping surface and the evaporator 90 surface caused by simply adjusting the narrowing radius. In addition, the difference in angle can also be combined with the material of the scraper 20. For example, if the first scraping surface 211 uses a hard material (such as nylon reinforced with fiber), the corresponding first angle is set to 35° to enhance the scraping force; if the second scraping surface 212 uses a slightly softer elastic material (such as silicone), the corresponding second angle is set to 48°, protecting the evaporator 90 surface while cleaning residue. The synergy between angle and material makes the scraping effect even better.

[0078] This implementation utilizes a differentiated angle design to precisely adapt to both forward and reverse rotation conditions. When the ice-scraping and stirring mechanism rotates forward, a larger angle can improve efficiency, while a smaller angle can enhance scraping force. When rotating in reverse, a corresponding angle can be used to focus on cleaning or mixing, ensuring that the scraping action is targeted under different conditions, simultaneously improving both scraping efficiency and thoroughness. Secondly, the angle difference allows the scraping trajectories of the two scraping surfaces to complement each other. After scraping away the main ice crystals at a larger angle, a smaller angle can penetrate deeper to clean crevices or residual thin layers, avoiding scraping blind spots that cannot be covered by a single angle and completely eliminating the risk of ice crystals accumulating and solidifying into large ice blocks. Furthermore, by adjusting the angle, the scraping force and operating resistance are balanced, avoiding increased equipment noise and energy consumption due to excessively large angles, or structural overload and deformation risks due to excessively small angles, thus extending the equipment's service life and improving the user experience.

[0079] Please continue to refer to the instruction manual appendix. Figure 5 Based on the above implementation, in one embodiment, a first scraping edge 214 extending along the axial direction of the evaporator 90 is formed at the junction of the first scraping surface 211 and the first inner arc surface 213, and a second scraping edge 215 extending along the axial direction of the evaporator 90 is formed at the junction of the second scraping surface 212 and the first inner arc surface 213. The two scraping edges (first scraping edge 214 and second scraping edge 215) are defined as scraping edge structures corresponding to the forward and reverse rotation conditions, respectively. The first scraping edge 214 is specifically used to scrape ice crystals on the surface of the evaporator 90 when the ice-scraping stirring mechanism rotates forward, and the second scraping edge 215 is specifically used to complete the ice crystal scraping operation when the mechanism rotates in reverse. Through the scraping edge design with concentrated force and the allocation of forward and reverse rotation functions, the accuracy and efficiency of the scraping action are further improved.

[0080] It should be understood that the formation of the first scraping edge 214 and the second scraping edge 215 is a natural result of the structural synergy provided by the above-described embodiments. This synergy depends on the contour of the first inner arc surface 213, the connection method between the first scraping surface 211 and the second scraping surface 212 and the first inner arc surface 213, and the angle design where the distance between the two scraping surfaces narrows from the inside to the outside. The connecting edge between the first scraping surface 211 and the first inner arc surface 213, due to the acute angle structure formed by the narrowing distance, naturally converges into a continuous edge line. This line extends along the axial direction of the evaporator 90 to form the first scraping edge 214. Similarly, the connecting edge between the second scraping surface 212 and the first inner arc surface 213 forms the second scraping edge 215 through the same structural logic. The morphology of the scraping edge is essentially the concentrated area at the junction of the scraping surface and the first inner arc surface 213, focusing the potentially dispersed scraping force onto this axially extending edge. This transforms ice crystal scraping from surface contact to line contact, significantly increasing local scraping pressure and making it easier to overcome the adhesion between ice crystals and the surface of the evaporator 90.

[0081] The first scraper edge 214 and the second scraper edge 215 can be adapted to meet actual needs. Structurally, the scraper edge can be set as a sharp scraper edge or a slightly blunt scraper edge. The sharp scraper edge forms a sharp line at the connection edge between the scraping surface and the first inner arc surface 213, which is suitable for scenarios where ice crystals are firmly attached, such as when the surface temperature of the evaporator 90 is extremely low, causing the ice crystals to solidify and harden. It achieves efficient peeling by quickly cutting into the contact surface between the ice crystals and the evaporator 90. The slightly blunt scraper edge has a rounded transition at the edge to avoid the sharp edge scratching the surface of the evaporator 90, while reducing the cutting effect on sticky materials. It is suitable for scenarios where the evaporator 90 is made of a softer material (such as aluminum) or for making ice cream containing fruit pulp or pieces. It protects the evaporator 90 and preserves the original shape of the material while scraping away the ice crystals. In terms of extension method, the scraper edge can be extended continuously or in segments. Continuous extension means that the scraper edge extends axially from one end of the evaporator 90 to the other end, ensuring full axial coverage without omissions, and is compatible with standard-sized evaporators 90. Segmented extension, on the other hand, sets tiny notches at different positions along the axial direction of the scraper edge, which is suitable for scenarios where the material may contain small hard impurities (such as seeds or ice fragments). The notches can serve as channels to avoid impurities, preventing them from getting stuck on the scraper edge and causing the mechanism to jam, while not affecting the overall scraping effect.

[0082] As described above, the first inner arc surface 213 provides a stable contact reference for the scraper edge. Only when the first inner arc surface 213 is in close contact with the evaporator 90 can the scraper edge maintain effective contact with the ice crystals, avoiding the scraper edge being suspended or excessively squeezed due to contact deviation. The narrowing of the spacing and the differentiated angle design of the first scraping surface 211 and the second scraping surface 212 determine the tilt angle and force characteristics of the scraper edge. The first scraper edge 214 corresponding to forward rotation forms a scraping angle adapted to the forward rotation speed based on its included angle, while the second scraper edge 215 corresponding to reverse rotation adapts to the reverse rotation condition through another included angle, ensuring that the scraper edge can exert force at the optimal angle under different rotation directions. The design of the scraper edge extending along the axial direction allows the scraper strip 20 to cover the entire axial range of the evaporator 90, avoiding local scraping blind spots.

[0083] Ultimately, considering the above embodiments, the structural form of the scraper 20 significantly improves the efficiency of ice crystal removal. The line-contact scraper edge generates greater local pressure, enabling rapid peeling even from thicker or firmly adhered ice crystals, effectively solving the problem of ice crystal residue in related technologies. Furthermore, the first scraper edge 214 and the second scraper edge 215 correspond to the functional allocation of the ice-scraping and stirring mechanism in forward and reverse rotation, respectively. Combined with the differentiated design of the included angle between the first scraping surface 211 and the second scraping surface 212, the ice-scraping and stirring mechanism can effectively perform its scraping function in both rotational directions. In forward rotation, the first scraper edge 214 efficiently peels off the main ice crystals, while in reverse rotation, the second scraper edge 215 takes over to clean up the remaining thin layer, forming a bidirectional complementary scraping logic that completely breaks the limitation of a single scraping direction. Furthermore, the scraper's shape design can be flexibly adapted to different scenarios. The choice between sharp and slightly blunt shapes, and the combination of continuous and segmented extensions, allows the ice scraping and stirring mechanism to meet diverse ice cream making needs, while protecting equipment components and extending their service life. Ultimately, the efficient and comprehensive scraping effect ensures that ice crystals are evenly peeled off and fully mixed with the materials, avoiding large ice crystal residues that could affect the smoothness of the ice cream. This significantly improves the taste and uniformity of the ice cream, and comprehensively enhances the user experience.

[0084] Please refer to the instruction manual attached. Figures 2-4 In one embodiment, the scraper 20 extends along the axial direction of the evaporator 90, and at the connection between the scraper 20 and the stirring blade 10, at least a portion of the scraper 20 passes through the opposite sides of the stirring blade 10 along the axial direction, thereby enhancing the connection stability between the scraper 20 and the stirring blade 10 and ensuring the integrity of the ice-scraped coverage.

[0085] Understandably, the extension length of the scraper 20 can be flexibly designed according to the axial dimension of the evaporator 90. For example, the extension length of the scraper 20 can be set to be exactly the same as the axial length of the evaporator 90, ensuring that the scraper 20 can cover from one end of the evaporator 90 to the other end when rotating, without scraping away any blank space axially. Alternatively, the extension length of the scraper 20 can be set to be slightly longer than the axial length of the evaporator 90, leaving space for the connection structure to be set at both ends of the scraper 20 in the manufacturing cavity 81, ensuring the overall structural strength of the ice scraping and stirring mechanism while preventing ice crystals from accumulating at the edges of both ends of the evaporator 90.

[0086] In addition, the extension posture of the scraper 20 should be kept straight or arc-shaped to match the axial contour of the evaporator 90, so as to ensure that the gap between the scraper 20 and the evaporator 90 is within the range suitable for scraping ice crystals.

[0087] The scraper 20 increases its contact area and connection depth with the stirring blade 10 by penetrating both sides of the connection point along the axial direction, thus avoiding local overload at the connection point. The fact that the scraper 20 at least partially penetrates the stirring blade 10 means that the penetration range can be flexibly adjusted according to actual needs. For example, in the case where the scraper 20 partially penetrates the stirring blade 10, at each connection point, the scraper 20 only penetrates the opposite sides of the stirring blade 10 on its outer side, forming a localized deep connection. In the case where the scraper 20 penetrates the stirring blade 10 entirely, at the connection area, the scraper 20 penetrates the opposite sides of the stirring blade 10 along the axial direction, maximizing the contact area and connection depth. The process for achieving the through connection can be selected based on the material combination. For example, the plastic scraper 20 and stirring blade 10 can be integrally molded, forming a through connection structure directly during injection molding without any splicing gaps. For metal materials, the scraper 20 can be welded through the stirring blade 10 and then fixed by welding, or a bolt fastening combined with a through hole design can be used. After the scraper 20 passes through both sides of the blade, it can be locked with nuts, balancing firmness and disassembly. This effectively disperses the torque and ice crystal impact force generated during ice scraping, avoids loosening and breakage caused by local overload at the connection point, and significantly reduces equipment failures caused by connection failure.

[0088] The scraper 20 extends axially and is precisely adapted to the shape of the evaporator 90, which also completely solves the problem of incomplete axial coverage of the scraper 20. With the circumferential distribution of multiple scrapers 20, ice can be scraped without dead angles around the entire circumference and axis of the evaporator 90, avoiding the accumulation and condensation of ice crystals in local axial areas.

[0089] Furthermore, the arrangement of the scraper 20 penetrating the stirring blade 10 reduces the distance between the scraper 20 and the inner side of the stirring blade 10, allowing the stirring blade 10 to be closer to the surface of the evaporator 90. The ice crystals scraped by the scraper 20 can be more smoothly guided by the surface of the scraper 20 (such as the first scraping surface 211 and the second scraping surface 212 mentioned above) to the area that can be acted upon by the stirring blade 10, optimizing the stirring effect of the ice scraping and stirring mechanism. At the same time, it limits the relative displacement between the scraper 20 and the stirring blade 10, reduces the possibility of structural deformation, and avoids the accumulation of ice crystals in the gaps. The axially extended scraper 20 also allows the force on the scraper 20 to be evenly distributed along the axial direction. Combined with the supporting effect of the stirring blade 10, the overall structural resistance to deformation is significantly improved, which can effectively resist the structural errors caused by the injection molding process, avoid scraping failure caused by the displacement of the scraper 20 after long-term use, and continuously ensure the smoothness of the ice cream and the stability of the equipment operation.

[0090] In one embodiment, taking the method of manufacturing the scraper 20 and stirring blade 10 using an integrated molding process as an example, the scraper 20 and stirring blade 10 manufactured by this process can completely eliminate the connection gaps that may exist in the spliced ​​structure, while ensuring the relative positional accuracy of the two and avoiding fitting deviations caused by assembly errors. The integrated molding process can be flexibly adjusted according to the material of the ice scraping and stirring mechanism and the specifications of the ice-making equipment. For example, the injection molding process is suitable for ice scraping and stirring mechanisms made of plastic or nylon materials, in which the scraper 20 and stirring blade 10 are simultaneously injection molded using a special mold; the die casting process is suitable for metal materials such as aluminum alloy and zinc alloy, in which molten metal is filled into the mold cavity through a high-pressure die casting process to form an integral structure; 3D printing is suitable for customized or complex structural designs, in which the complete assembly of the scraper 20 and stirring blade 10 can be printed directly from the three-dimensional model without the need for a mold, and the structural details can be flexibly adjusted. In addition, the combination of materials in one piece can also be flexibly adapted. For example, a two-color injection molding process can be used with a hard plastic body and a soft silicone scraper 20 inside, which not only ensures the rigidity of the overall structure, but also improves the fit between the inner ice scraping and stirring mechanism and the evaporator 90 through the soft material.

[0091] Specifically, such as Figure 5As shown, in this embodiment, the inner side surface of the stirring blade 10 (the surface near the evaporator 90) is defined as the second inner arc surface 11. In conjunction with the above implementation method, it can be understood that the inner side of the scraper 20 is formed with a first inner arc surface 213. The first inner arc surface 213 and the second inner arc surface 11 together constitute an inner arc surface that matches the surface contour of the evaporator 90. The first inner arc surface 213 and the second inner arc surface 11 are seamlessly connected to form a continuous and uniform arc surface, ensuring that the fit gap with the surface of the evaporator 90 is uniform and consistent. The shape of the inner arc surface must perfectly match the shape of the evaporator 90. If the evaporator 90 is a standard cylinder, the inner arc surface is designed as a corresponding cylindrical arc surface. The inner curvature radius of the scraper 20 and the stirring blade 10 is exactly the same, and there is no sharp transition at the joint, forming a smooth and continuous cylindrical surface. If the evaporator 90 is a variable-diameter cylinder (the diameter at both ends of the axial direction is slightly smaller than that in the middle), the inner arc surface is designed as a corresponding variable-diameter arc surface. The inner curvature of the scraper 20 and the stirring blade 10 gradually changes synchronously along the axial direction, always maintaining contact with the surface of the evaporator 90. The connection method between the first inner arc surface 213 and the second inner arc surface 11 can be achieved through mold precision control. For example, a precise parting surface can be set in the injection mold to allow the inner sides of the scraper 20 and the stirring blade 10 to connect naturally during molding. It can also be optimized through subsequent finishing processes. For example, after the metal is integrally molded, the joint can be polished to eliminate minor molding marks, making the inner arc surface smoother and reducing the frictional resistance with the evaporator 90.

[0092] The integrated structure of the scraper 20 and the stirring blade 10 eliminates the gap between them, solving the problem of ice crystals getting stuck at the joint and causing residue accumulation. At the same time, it greatly improves the overall structural rigidity, effectively resisting the torque and impact force of rotating ice scraping, reducing the increase in the fit gap caused by structural deformation. Furthermore, the continuous fitting design of the common inner arc surface makes the fit gap between the ice scraping and stirring mechanism and the surface of the evaporator 90 more uniform, reducing ice crystal residue from the source and preventing the formation of large ice blocks, thereby significantly improving the operational stability of the ice cream making equipment and the quality of the ice cream.

[0093] Please refer to the instruction manual attached. Figures 3-5 Based on any of the above embodiments, in one specific structural form of the ice-scraping stirring mechanism, three stirring blades 10 are provided. The three stirring blades 10 are distributed circumferentially around the evaporator 90, and each has a spiral structure that spirals around the circumference and extends spirally along the axial direction of the evaporator 90. Correspondingly, three scraper strips 20 are also provided. Each scraper strip 20 intersects with and connects to the three stirring blades 10 at different axial positions of the evaporator 90.

[0094] In this embodiment, the design of the three stirring blades 10 is the core of constructing the three-dimensional support frame. Their circumferential spacing and spiral extension shape work together to ensure both adaptability to the evaporator 90 and provide a stable support foundation. The circumferential spacing can be flexibly adjusted. For example, the three stirring blades 10 can be evenly distributed at 120° along the circumference of the evaporator 90, allowing the support force to be evenly distributed circumferentially and avoiding localized force concentration. Alternatively, they can be designed with non-uniform spacing, such as 80°, 120°, or 160°, depending on the connection requirements of the scraper 20, allowing the stirring blades 10 to provide stronger support at key connection points of the scraper 20. The spiral direction can be designed to be left-handed or right-handed. If the equipment rotates clockwise, right-handed spiral blades can be selected, which can drive the material to flow upward along the axial direction during rotation, improving the uniformity of stirring.

[0095] The cross-connection design of the three scraper blades 20 and the stirring blades 10 utilizes the spiral extension characteristics of the stirring blades 10 to form natural intersection points at different axial heights, allowing the scraper blades 20 to form a three-dimensional fixation with the stirring blades 10 through multi-position connections. The axial extension length of the scraper blades 20 is adapted to the axial dimensions of the evaporator 90 and the stirring blades 10, ensuring that each scraper blade 20 can intersect with the three stirring blades 10 throughout the entire axial range.

[0096] like Figure 5 As shown in the figure, when the spacing between any two adjacent scraper blades 20 along the circumferential direction is not equal, the two adjacent scraper blades 20 along the circumferential direction form included angles α2, β2 and θ respectively, wherein α2, β2 and θ are not equal to each other, for example, α2 is 120°, β2 is 90° and θ is 150°.

[0097] The distribution of connection points can be flexibly designed. For example, each scraper 20 can have three connection points along the axial direction. By setting the spacing between any two adjacent scraper 20s along the circumference to be unequal, the three connection points between each scraper 20 and the three stirring blades 10 are staggered in the axial direction. The number of connection points can also be adjusted according to the force requirements, such as four, five, or six connection points, to further distribute the torque.

[0098] Especially in the embodiment where the first inner arc surface 213 and the second inner arc surface 11 together form a continuous inner arc surface structure, since both the first inner arc surface 213 and the second inner arc surface 11 are matched to the evaporator 90, the inner side of the connection between the scraper 20 and the stirring blade 10 will form the aforementioned inner arc surface. Since the first inner arc surface 213 will have the second inner arc surface 11 extending on both sides in the axial direction, the scraper 20 will form a scraping blind zone at the corresponding axial position of the evaporator 90. By designing that the spacing between any two adjacent scraper 20s is not equal, the connection points between the scraper 20 and the stirring blade 10 are staggered along the axial direction, which allows the scraping blind zones between the scraper 20s to form a complementary relationship, thereby achieving all-round scraping of the surface of the evaporator 90, avoiding local scraping blind zones, and completely solving the problem of uneven scraping in related technologies.

[0099] In addition, the guiding effect of the spiral structure of the stirring blades allows the materials to mix more thoroughly with the ice crystals, which also improves the smoothness of the ice cream.

[0100] Please refer to the instruction manual attached. Figures 1-4 This embodiment also provides an ice cream making device, which, based on a machine body 70 and a making container 80 detachably mounted on the machine body 70, adopts the ice scraping and stirring mechanism provided in any of the above embodiments.

[0101] Specifically, a hollow production cavity 81 is formed inside the production container 80, and an evaporator 90 is fixedly installed inside the production cavity 81. The stirring blades 10 and scraper strips 20 of the ice scraping and stirring mechanism are distributed around the evaporator 90. By being driven and connected to the drive components (such as motors) inside the machine body 70, they can move around the evaporator 90, so as to achieve the synergistic effect of efficient removal of ice crystals on the surface of the evaporator 90, uniform stirring of materials, and stable operation of the equipment.

[0102] The body 70 serves as the supporting foundation for the ice cream making equipment. Its material can be flexibly selected according to the usage scenario. For example, food-grade ABS plastic can be used for household equipment, while stainless steel can be used for commercial equipment. The assembly structure of the body 70 needs to be compatible with the detachable design of the production container 80. Common implementation methods include, but are not limited to, snap-fit ​​connections, magnetic connections, and screw connections. For example, in an embodiment where the body 70 and the production container 80 are connected by a snap-fit, the body 70 may be provided with an annular snap-fit ​​groove in the assembly area of ​​the production container 80, and the production container 80 may be provided with a snap-fit ​​protrusion that matches the annular snap-fit ​​groove at the position corresponding to the assembly area of ​​the body 70, so that quick assembly and disassembly can be achieved by rotation and snap-fit; in an embodiment where the body 70 and the production container 80 are connected by a screw, the body 70 and the production container 80 may be tightened and fixed by matching internal and external threads, or by bolts through internal thread structures with opposite positions; and in an embodiment where the body 70 and the production container 80 are connected by a magnetic attraction, the body 70 may have a built-in strong magnet, and the production container 80 may be provided with a corresponding magnetic metal ring, so that magnetic force can be used to achieve adsorption and fixation.

[0103] As can be seen from the above, in order to drive the ice scraping and stirring mechanism to move relative to the evaporator 90, the interior of the body 70 needs to reserve space for the installation of drive components, such as a built-in motor and a reduction gear set, which are connected to the ice scraping and stirring mechanism through a rotating shaft to provide it with rotational power.

[0104] The container 80 serves as the material carrier and ice-making component. Its detachable design from the main body 70 facilitates use and maintenance while precisely controlling the relative positions of the evaporator 90 and the ice-scraping and stirring mechanism. The container 80 can be made of, but is not limited to, food-grade safe materials, such as high borosilicate glass, food-grade PP plastic, and stainless steel.

[0105] The ice-scraping and stirring mechanism can be connected to the drive assembly of the machine body 70 by means of a rotating shaft insertion, key connection, or coupling fixation. For example, the top of the stirring blade 10 is provided with a square slot, and the end of the drive shaft of the machine body 70 is a matching square protrusion. After insertion, it is locked by a set screw to ensure stable power transmission; or a cross key connection can be used, with a matching keyway provided in the connection hole between the shaft and the ice-scraping and stirring mechanism. Torque is transmitted through the key block to avoid relative slippage. The rotation trajectory of the ice-scraping and stirring mechanism must be adapted to the production chamber 81 and the evaporator 90. A stirring gap can be reserved between the outermost part of the stirring blade 10 and the inner wall of the production chamber 81. The scraper 20 can abut against the surface of the evaporator 90 or maintain a certain gap (such as 0.1-0.3mm) with the evaporator 90 to ensure the scraping effect and avoid mechanical interference.

[0106] In this ice cream making equipment, the detachable design of the production container 80 and the machine body 70 solves the problem of inconvenient internal cleaning. Users can easily disassemble the container for thorough cleaning, avoiding the growth of bacteria from material residue and improving hygiene and convenience.

[0107] Furthermore, the structural configuration of the body 70, the production container 80, and the ice scraping and stirring mechanism effectively ensures the fitting precision between the scraper 20 and the evaporator 90. Combined with the strong structural stability design of the ice scraping and stirring mechanism itself, the fitting gap is further reduced, thus avoiding the risk of blockage caused by ice crystal accumulation and condensation at the overall equipment level, and ensuring the long-term stable operation of the equipment.

[0108] In addition, the ice scraping and stirring mechanism, which moves around the evaporator at a 90° angle, can fully utilize its structural advantages of full-circumference and full-axial scraping. Combined with the design of double-sided scraping, unequal-spaced scraper strips 20, and spiral blade guidance, it can completely eliminate scraping dead corners, making the ice crystals scraped more evenly. At the same time, the spiral blades drive the material to flow axially, improving the fullness of mixing between ice crystals and materials, and significantly improving the smoothness of the ice cream.

[0109] Please refer to the instruction manual attached. Figures 2-4 In the actual embodiment of this ice cream making equipment, taking the above-mentioned embodiment as an example, the stirring blades 10 are configured as three, the three stirring blades 10 are distributed circumferentially along the evaporator 90 and each has a spiral structure extending spirally along the axial direction of the evaporator 90, and the scraper 20 is also configured as three, the three scraper 20 all extending along the axial direction of the evaporator 90, and each scraper 20 intersects and connects with the three stirring blades 10 at different axial positions. In this embodiment, each stirring blade 10 has a connecting blade 40 at the end away from the machine body 70, each connecting blade 40 is fixedly connected to the corresponding scraper 20, and all connecting blades 40 are interconnected to form a whole, thereby improving the structural strength of the ice-scraping and stirring mechanism and improving the operational reliability of the ice cream making equipment.

[0110] As the core of this implementation method, the connecting blade 40 serves as a reinforcement structure at the end of the ice scraping and stirring mechanism. Its design directly addresses the weak support at the end of the stirring blade 10 away from the body 70. At the same time, by connecting with each other to form a closed frame, the overall force of the mechanism is more balanced.

[0111] In some embodiments, in order to improve the operational stability of the ice-scraping stirring mechanism, a support structure is also provided between the intersection of each connecting blade 40 and the evaporator 90. For example, the ice-scraping stirring mechanism is provided with a support shaft hole 41 at the intersection of each connecting blade 40. The end of the evaporator 90 away from the body 70 protrudes a rotating shaft that matches the support shaft hole 41. The rotating shaft is rotatably inserted into the support shaft hole 41, thereby enabling the end of the stirring blade 10 close to the body 70 to be supported by the drive assembly, and the end away from the body 70 to be supported by the evaporator 90.

[0112] The shape of the connecting blade 40 needs to be adapted to the structure of the far end of the stirring blade 10 and the fixing requirements of the scraper 20. It can be designed as a straight plate, an arc or an L-shape, etc. This embodiment will not elaborate on this.

[0113] The fixing method of connecting blade 40 and scraper 20 needs to match the overall structure and material of the ice scraping and stirring mechanism. Plastic materials can adopt an integrated molding process to make connecting blade 40, scraper 20 and stirring blade 10 form a complete integrated structure without splicing gaps; metal materials can be fixed by bolts or welding. Bolt fixing is convenient for later maintenance and replacement, while welding fixing is more secure and suitable for high-frequency heavy-load scenarios.

[0114] The construction of the closed three-dimensional frame greatly improves the overall structural strength of the ice scraping and stirring mechanism, effectively resists the torque impact and ice crystal resistance during the rotating ice scraping process, significantly reduces the risk of structural deformation, and further reduces the gap between the scraper 20 and the evaporator 90, thereby reducing the hidden danger of equipment blockage caused by ice crystal accumulation and condensation from the root.

[0115] In addition, in some embodiments, the ice scraping and stirring mechanism is provided with a support ring 50 at the end of each stirring blade 10 near the body 70. The support ring 50 is arranged around the evaporator 90 in the circumferential direction. The end (proximal end) of each stirring blade 10 and each scraper 20 near the body 70 is connected to the corresponding position of the support ring 50, thereby further improving the structural strength of the ice scraping and stirring mechanism.

[0116] Please continue to refer to the instruction manual appendix. Figure 4 In one embodiment, each connecting blade 40 has an extrusion structure 60 on the side away from the scraper 20. The end of the production cavity 81 away from the machine body 70 has a discharge port 82. The extrusion structure 60 is arranged opposite to the cavity wall of the production cavity 81 on the side where the discharge port 82 is located, and the surface of the extrusion structure 60 is parallel to the cavity wall where the discharge port 82 is located. The extrusion structure 60, as a material pushing structure other than the stirring blade 10, is designed based on the structural foundation of the connecting blade 40. It achieves stable installation with the closed frame of the connecting blade 40 and can rotate synchronously with the connecting blade 40, converting the rotational power into the extrusion thrust of the material.

[0117] For example, the extrusion structure 60 and the connecting blade 40 can be integrally molded from the same material, such as the connecting blade 40 made of plastic and the integrally injection molded extrusion structure 60; or, the extrusion structure 60 and the stirring blade 10 can be made using a two-color injection molding process, with the connecting blade 40 being made of hard nylon and the extrusion structure 60 being made of soft silicone. The soft surface can better fit the wall of the production cavity 81, reducing material residue, while also having a certain degree of elasticity to avoid wear caused by hard contact; or, the extrusion structure 60 and the stirring blade 10 can also be fixed with wear-resistant material extrusion structure 60 by bonding or bolting, such as the connecting blade 40 being made of stainless steel and the extrusion structure 60 being made of polytetrafluoroethylene sheet.

[0118] The shape design of the extrusion structure 60 needs to be adapted to the material characteristics and discharge requirements. For example, a flat plate structure can be adopted, which is suitable for materials with good flowability. When rotating, it can form a uniform pushing surface and avoid uneven local force on the material. Alternatively, an arc-shaped structure can be adopted, where the curvature of the extrusion structure 60 is slightly adapted to the inner wall contour of the corresponding area of ​​the production cavity 81, which can increase the contact area with the material and improve the pushing efficiency, especially suitable for viscous and easily adhered materials. Furthermore, a structure with fine protrusions on the surface can also be adopted, with the protrusions arranged along the rotation direction, which can enhance the gripping force on the material and prevent the material from slipping during pushing, making it suitable for ice cream containing granular ingredients such as fruit pulp and fruit pieces.

[0119] The design of the discharge port 82 of the production chamber 81 needs to be functionally compatible with the extrusion structure 60. Its position is fixed at the end of the production chamber 81 away from the machine body 70, which avoids interference with the drive mechanism of the machine body 70 and allows material to be pushed by the end position of the extrusion structure 60. The relative arrangement and parallel surface design of the extrusion structure 60 and the cavity wall where the discharge port 82 of the production chamber 81 is located are the key to ensuring the extrusion pushing effect. The principle is to form a uniform extrusion gap through the parallel surface, allowing the material to flow smoothly along the gap to the discharge port 82 under the rotational thrust, avoiding material accumulation or uneven pushing caused by surface tilt.

[0120] In summary, the extrusion structure 60 rotates synchronously with the connecting blades 40, generating a continuous and uniform thrust on the material within the production chamber 81. This effectively solves the problems of material accumulation at the end of the production chamber 81 and poor discharge. Especially for viscous or particulate materials, the pushing force ensures that the material passes smoothly through the discharge port 82, preventing blockages. Secondly, the parallel design of the extrusion structure 60 and the cavity wall of the discharge port 82 ensures a uniform extrusion gap and balanced material force. This not only guarantees a stable discharge speed but also helps to scrape away residual material adhering to the cavity wall, reducing cleaning dead zones. Combined with the detachable nature of the production container 80, the cleaning difficulty is significantly reduced.

[0121] Other embodiments of this specification will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models claimed herein. This specification is intended to cover any variations, uses, or adaptations that follow the general principles of this specification and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this specification are indicated by the following claims.

[0122] It should be understood that this specification is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this specification is limited only by the appended claims.

[0123] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. An ice-scraping and stirring mechanism, applied to ice-making equipment, the ice-making equipment including an evaporator, characterized in that, The ice-scraping and stirring mechanism includes: Stirring blades, the stirring blades being distributed circumferentially along the evaporator; At least three scraper blades are provided, each of which is distributed at intervals along the circumference of the evaporator and is connected to the inner side of the stirring blades, so as to jointly enclose and form a space for accommodating the evaporator. The spacing between any two adjacent scrapers along the circumferential direction is not equal. The scraper is provided with scraping structures on both sides of the circumferential direction. The two scraping structures are used to scrape off the ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates forward and reverse.

2. The ice-scraping and stirring mechanism according to claim 1, characterized in that, The two scraping structures are respectively a first scraping surface and a second scraping surface located on opposite sides of the scraper along the circumferential direction; The inner side of the scraper has a first inner arc surface that matches the surface of the evaporator. One edge of the first scraping surface and the second scraping surface are respectively connected to the first inner arc surface, and the distance between the first scraping surface and the second scraping surface gradually narrows from the inner side of the scraper to the outer side, so that the first scraping surface and the second scraping surface form an acute angle with the tangent of the first inner arc surface at the connection point.

3. The ice-scraping and stirring mechanism according to claim 2, characterized in that, The first scraping surface and the tangent of the first inner arc surface at the connection point form a first angle, and the second scraping surface and the tangent of the first inner arc surface at the connection point form a second angle; The first included angle is greater than or less than the second included angle.

4. The ice-scraping and stirring mechanism according to claim 3, characterized in that, A first scraping edge extending along the axial direction of the evaporator is formed between the first scraping surface and the first inner arc surface, and a second scraping edge extending along the axial direction of the evaporator is formed between the second scraping surface and the first inner arc surface. The first scraper edge is used to scrape off ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates forward, and the second scraper edge is used to scrape off ice crystals on the surface of the evaporator when the ice scraping and stirring mechanism rotates in reverse.

5. The ice-scraping and stirring mechanism according to claim 1, characterized in that, The scraper extends along the axial direction of the evaporator, and at least partially penetrates the opposite sides of the stirring blade along the axial direction at the connection point with the stirring blade.

6. The ice-scraping and stirring mechanism according to claim 5, characterized in that, The scraper and the stirring blade are integrally formed; The inner side of the scraper and the inner side of the stirring blade together form an inner arc surface that matches the surface of the evaporator.

7. The ice-scraping and stirring mechanism according to any one of claims 1-6, characterized in that, There are three stirring blades, which are distributed at intervals along the circumference of the evaporator and are all spiral structures that spiral around the circumference and extend spirally along the axial direction of the evaporator. There are three scraper blades, and each scraper blade intersects and connects with the stirring blades at different axial positions in the evaporator.

8. An ice cream making device, characterized in that, include: body; A container is detachably assembled to the machine body, and a hollow manufacturing cavity is formed inside the manufacturing container, with an evaporator installed inside the manufacturing cavity; According to any one of claims 1-7, the ice-scraping stirring mechanism is rotatably disposed within the production cavity, and the stirring blades and scraper of the ice-scraping stirring mechanism are distributed circumferentially along the evaporator so that the stirring blades and scraper can move around the evaporator.

9. The ice cream making equipment according to claim 8, characterized in that, There are three stirring blades, which are distributed at intervals along the circumference of the evaporator and are all spiral structures extending spirally along the axial direction of the evaporator. There are three scraper blades, each of which extends along the axial direction of the evaporator and intersects and connects with each of the stirring blades at different axial positions. Each of the stirring blades has a connecting blade at the end away from the machine body. Each connecting blade is fixedly connected to each of the scrapers, and the connecting blades are connected to each other.

10. The ice cream making equipment according to claim 9, characterized in that, Each of the connecting blades has a pressing structure on the side opposite to the scraper. The production chamber is provided with a discharge port at one end away from the machine body. The extrusion structure is disposed opposite to the side wall of the production chamber where the discharge port is located, and the surface of the extrusion structure is parallel to the side wall where the discharge port is located.

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