A performance optimized food processor

Abstract

The application discloses a performance-optimized food processor, which comprises a main machine and a stirring cup assembly, the stirring cup assembly comprises a cup body, a crushing knife, a cup body shell and a motor for driving the crushing knife to rotate, the lower end of the motor is provided with a heat dissipation fan, the cup body shell is internally provided with a motor cover wrapping the motor and a centrifugal air cover arranged below the motor cover, the centrifugal air cover is arranged around the heat dissipation fan, an air inlet channel is arranged between the motor cover and the cup body shell, a heat dissipation air duct is formed in the motor cover, an air outlet channel is formed in the centrifugal air cover, the main machine is provided with a main machine air inlet and a main machine air outlet, the lower end of the air inlet channel is communicated with the main machine air inlet, the upper end of the air inlet channel is communicated with the heat dissipation air duct, the heat dissipation air duct is communicated with the air inlet channel and the air outlet channel, and the air outlet channel is communicated with the main machine air outlet. The food processor aims to solve the technical problems of low motor heat dissipation efficiency and large machine working noise of the food processor with the cup body and the motor arranged integrally in the prior art.

Description

Technical Field

[0001] This application relates to the field of food processing machines, and more specifically to a performance-optimized food processing machine. Background Technology

[0002] In existing blender products where the cup and motor are integrated, a connecting air duct is used between the cup assembly and the main unit to dissipate heat from the motor. For example, in the blender disclosed in patent CN201920286880.1, an air guide is located below the cup, with an air inlet area in the center and an air outlet area surrounding the air inlet area on the circumferential edge. The main unit also has corresponding air inlet and outlet areas. When the machine is working, air is drawn into the central area of ​​the motor to cool it, and then the hot air is exhausted through the outlet area around the motor, achieving motor cooling. However, because the air inlet and outlet areas are relatively close, some hot air can be drawn back into the cup assembly during exhaust, affecting the motor's cooling efficiency. Furthermore, with the cup assembly using a direct air outlet, the propagation path for motor and airflow noise is short, allowing noise to be directly transmitted, resulting in high operating noise from the machine.

[0003] In addition, most of these machines use axial fans for auxiliary cooling. The fan at the bottom of the motor typically uses axial blades, characterized by axial airflow. The noise generated by the direct airflow from the axial fan is transmitted outwards, exacerbating the machine's operating noise and significantly impacting the user experience. Furthermore, the main unit needs to accommodate the exhaust duct at the fan's location, occupying considerable space and limiting the internal structural layout. Some machines also have the motor directly installed in the open space of the cup shell. Due to the lack of effective sound insulation, the noise generated by the motor during operation is directly transmitted to the outside, further affecting the machine's noise reduction performance. Utility Model Content

[0004] This application provides a performance-optimized food processing machine, based on the existing food processing machine in which the cup body and motor are integrated, and solves the technical problems of low motor heat dissipation efficiency, high machine noise and low installation space utilization caused by unreasonable air outlet path settings in existing food processing machines.

[0005] The technical solution adopted in this application is as follows:

[0006] An optimized food processor includes a main unit and a mixing cup assembly mounted on the main unit. The mixing cup assembly includes a cup body, a pulverizing blade disposed within the cup body, a cup body outer shell fixed to the lower end of the cup body, and a motor disposed within the cup body outer shell for driving the pulverizing blade to rotate. A cooling fan is provided at the lower end of the motor. The cup body outer shell has a motor cover enclosing the motor and a centrifugal fan shroud disposed below the motor cover and communicating with the motor cover. The centrifugal fan shroud surrounds the cooling fan. An air inlet channel is provided between the motor cover and the cup body outer shell. A cooling duct is formed within the motor cover to allow airflow to flow axially through the rotor of the motor. An air outlet channel is formed within the centrifugal fan shroud to allow airflow to flow radially away from the motor. The main unit has a main unit air inlet and a main unit air outlet. The lower end of the air inlet channel communicates with the main unit air inlet, and the upper end of the air inlet channel communicates with the cooling duct. The cooling duct connects the air inlet channel and the air outlet channel. The air outlet channel communicates with the main unit air outlet.

[0007] In this technical solution, a centrifugal fan shroud is installed at the location of the cooling fan to form a horizontal air outlet channel inside. The airflow passing through the motor flows into the air outlet channel and then flows laterally for a certain distance before exiting the outer shell of the cup. Compared with the existing method of direct airflow from the cup, this method extends the airflow path, which helps to reduce the energy attenuation of motor noise and airflow noise during propagation, thereby achieving the purpose of noise reduction. On the other hand, the airflow does not simply flow straight in and out of the outer shell of the cup, but flows along a curved path, which increases the distance between the inlet and outlet of the air inlet and outlet channels of the stirring cup assembly. This alleviates the situation where some hot airflow flows back into the outer shell of the cup during the exhaust process, affecting the heat dissipation of the motor, ensuring the heat dissipation efficiency and effect of the motor, and effectively improving the heat dissipation performance of the machine.

[0008] It is understandable that a centrifugal air duct is formed inside the centrifugal fan shroud, allowing the cooling fan to be a centrifugal fan. Under the action of centrifugal force, the airflow is orderly ejected outwards. During the flow, the airflow experiences pressure and velocity changes, resulting in more orderly exhaust. Furthermore, the blades of the centrifugal fan can better guide the airflow, reducing turbulence and eddy currents, which helps reduce noise caused by unstable airflow, thus further improving the noise reduction effect. In addition, by installing a motor cover on the outside of the motor, it is beneficial to guide the airflow towards the motor rotor to achieve the required heat dissipation temperature. On the other hand, the motor cover can also block and absorb motor noise, reflecting some sound waves. The sound waves undergo multiple reflections within the motor cover, effectively reducing the propagation of motor noise to the outside, thereby lowering the overall noise level and improving the machine's noise reduction performance.

[0009] Optionally, the main unit's air inlet and air outlet are arranged opposite to each other and respectively located on the front and rear sides of the main unit.

[0010] As mentioned earlier, in existing technologies, when the axial fan blows air downwards, both the mixing cup assembly and the main unit require a large exhaust space, limiting the layout of the internal structure of the main unit. The exhaust path occupies a significant portion of the volume of the mixing cup assembly and the main unit, resulting in wasted space. In this technical solution, with the main unit's air inlet and outlet positioned opposite each other, the air inlet and outlet positions of the air inlet and outlet channels can be aligned, maximizing the motor's heat dissipation path. On one hand, the greater distance between the air inlet and outlet positions prevents backflow of hot air; on the other hand, the extended airflow path significantly reduces noise energy, greatly reducing the noise transmitted to the outside world and improving the user experience. By placing the main unit's exhaust outlet at the rear of the main unit, and assuming the front of the main unit faces the user according to user habits, the hot air discharged can be prevented from scalding the user, improving safety. The space between the air inlet and air outlet of the host can be used to install other functional components inside the host. Accordingly, the host only needs to retain the air duct structure that connects to the air inlet and air outlet channels, and there is no need to set up a large air duct structure, thus improving the efficiency of the internal space utilization of the host.

[0011] Optionally, the centrifugal fan shroud includes an annular portion and an extension portion extending outward from a notch on one side of the annular portion. The extension portion is located on the side opposite to the air inlet channel, and the main unit air outlet is located below the extension portion. The distance from the inner sidewall of the annular portion to the cooling fan gradually decreases from the notch towards the direction away from the notch.

[0012] In this technical solution, the air outlet position of the air outlet channel and the air inlet position of the air inlet channel are set opposite to each other, which maximizes the heat dissipation path of the motor. The air inlet and outlet positions are far apart, avoiding the backflow of hot air. Moreover, the airflow has a long radial flow path in the air outlet channel, which can improve the noise reduction effect. The distance from the inner side wall of the annular part to the cooling fan gradually decreases from the notch to the direction away from the notch, so that the cooling fan is set off eccentrically relative to the annular part. This creates a high-pressure zone at the position away from the notch relative to the notch, so that the airflow can move more smoothly towards the notch during the rotation of the cooling fan, thereby enhancing the exhaust and improving the heat dissipation efficiency.

[0013] Optionally, a gap is provided between the motor cover and the outer wall of the motor, and a first sealing element is provided in the gap. The airflow flowing from the air inlet channel into the heat dissipation channel flows to the rotor winding at the center of the motor under the action of the first sealing element.

[0014] In this technical solution, in order to improve the heat dissipation effect of the rotor winding at the center of the motor, the motor cover can be set close to the outer wall of the motor to reduce the airflow flowing into the space between the motor cover and the outer wall of the motor. Furthermore, a first sealing element is set in the gap between the motor cover and the outer wall of the motor. Then, when the airflow flows into the heat dissipation duct, the airflow can flow fully to the rotor in the middle of the motor, which can effectively cool down the rotor winding with large heat generation, thereby meeting the overall heat dissipation requirements of the motor.

[0015] Optionally, the main unit includes a housing and a base located at the bottom of the housing. The base has an upwardly protruding part, and the top wall of the protruding part has an air inlet hole. An air inlet duct is provided between the housing and the protruding part, and the upper and lower ends of the air inlet duct are respectively connected to the air inlet of the main unit and the air inlet hole.

[0016] In this technical solution, the main unit adopts a separate housing and base for easy disassembly to install components such as the power board inside. The main unit also features an air intake duct, providing airflow for the mixing cup assembly and ensuring proper heat dissipation of the motor inside, thus guaranteeing normal machine operation. To ensure smooth airflow, the air intake hole of the main unit is positioned higher than the bottom wall of the base, facilitating the flow of external air from the concave space formed by the protrusion, avoiding airflow obstruction, improving airflow efficiency, and thus ensuring efficient motor heat dissipation. Furthermore, the horizontally positioned air intake hole allows for vertical airflow into the main unit, further improving airflow efficiency. Additionally, the air intake hole is positioned higher than the machine's placement surface, providing waterproofing and preventing water damage to the internal electrical components, thereby extending the machine's lifespan.

[0017] Optionally, the base is provided with an air outlet cover, an air outlet duct is formed inside the air outlet cover, the upper end of the air outlet cover is connected to the air outlet of the main unit, and the lower end of the air outlet cover abuts against the side wall of the base and is connected to the air outlet hole on the side wall of the base.

[0018] In this technical solution, an exhaust hood is used to form an exhaust duct, which can further extend the airflow path, thereby reducing noise energy and improving the noise reduction effect. The exhaust holes are set on the side wall of the base, which helps to extend the path of the exhaust duct and also allows the exhaust holes to be further away from the air inlet, preventing the exhaust hot air from flowing back from the air inlet, thus ensuring the heat dissipation effect of the machine.

[0019] Optionally, the air inlet and the air outlet are respectively located on both sides of the motor shaft.

[0020] In this technical solution, by increasing the distance between the air inlet and the air outlet, interference between the air intake and exhaust of the main unit can be prevented, and the phenomenon of some of the exhaust hot air flowing back from the air inlet can be prevented, thereby ensuring the heat dissipation effect of the machine.

[0021] Optionally, a second sealing element is provided at the connection position between the motor cover and the centrifugal fan cover.

[0022] In this technical solution, by strengthening the sealing connection between the motor cover and the centrifugal fan cover, it is possible to prevent some of the hot air that carries away the heat of the motor from flowing into the outer shell of the cup body through the gap between the motor cover and the centrifugal fan cover, causing the temperature around the motor to rise and affecting the heat dissipation effect of the motor. By setting a second sealing element, the hot air can fully flow from the heat dissipation channel into the air outlet channel and then be discharged, thus ensuring the heat dissipation effect of the motor.

[0023] Optionally, the bottom of the mixing cup assembly is provided with a cup body air inlet communicating with the air inlet channel and a cup body air outlet communicating with the air outlet channel. A shield is movably installed inside the cup body shell. The shield opens the cup body air inlet and the cup body air outlet when the mixing cup assembly is installed on the main unit, and closes the cup body air inlet and the cup body air outlet when the mixing cup assembly is separated from the main unit.

[0024] In this technical solution, to address the issue of water ingress into the bottom of the mixing cup assembly during independent operation, such as when it is placed alone on a wet surface or during washing, potentially causing abnormal power supply or damage to the internal electrical components, a shield is installed inside the cup shell. After the mixing cup assembly is removed from the main unit, the shield closes the air inlet and outlet of the cup, achieving a waterproof seal and improving the machine's performance and lifespan. Furthermore, as a movable component, the shield can open the air inlet and outlet of the cup when the mixing cup assembly is installed in place with the main unit, ensuring airflow between the main unit and the mixing cup assembly and meeting the overall heat dissipation requirements. Therefore, this solution balances waterproofing of the mixing cup assembly and overall heat dissipation, improving the overall performance of the machine and enhancing the user experience.

[0025] Optionally, the main unit has a recessed cup mounting cavity, the bottom wall of the cup mounting cavity has a first protrusion and a second protrusion, the inner side wall of the first protrusion has an air inlet for the main unit, the inner side wall of the second protrusion has an air outlet for the main unit, the outer shell of the cup has a first recess that engages with the first protrusion, the centrifugal fan shroud has a second recess that engages with the second protrusion, and the top of both the first and second recesses is movably fitted with the shielding member. When the first protrusion is inserted into the first recess, it pushes the shielding member upward, and when the second protrusion is inserted into the second recess, it pushes the shielding member upward.

[0026] In this technical solution, the main unit is equipped with a first protrusion and a second protrusion. On the one hand, the first and second protrusions can be inserted and engaged with the first and second recesses respectively to achieve the installation and positioning of the mixing cup assembly, facilitating quick installation of the mixing cup assembly and ensuring its installation stability, thus avoiding shaking during operation and improving working stability. On the other hand, the first and second protrusions can provide the main unit's air inlet and air outlet. By placing the main unit's air inlet on the inner wall of the first protrusion and the main unit's air outlet on the inner wall of the second protrusion, when the mixing cup assembly is removed, liquid can be prevented from flowing directly downwards into the main unit through the main unit's air inlet and air outlet, reducing the risk of water ingress and protecting the internal electrical components of the main unit. Furthermore, openings are avoided on the top of the first and second protrusions. In this way, the tops of the first and second protrusions can act as trigger points to push the shield during the installation of the mixing cup assembly, eliminating the need for an additional trigger structure on the main unit. This simplifies the main unit structure, and the shield is moved simultaneously with the installation of the mixing cup assembly, requiring no additional steps, saving user operation and improving the user experience. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of a food processing machine according to one embodiment of this application.

[0029] Figure 2 This is a cross-sectional schematic diagram of a food processing machine according to one embodiment of this application.

[0030] Figure 3 This is a schematic diagram showing the arrangement of the centrifugal fan shroud and cooling fan inside the stirring cup assembly according to one embodiment of this application.

[0031] Figure 4 This is a schematic diagram showing the arrangement of the host air inlet and host air outlet in one embodiment of this application.

[0032] Figure 5 This is a cross-sectional schematic diagram of a host according to one embodiment of this application.

[0033] Figure 6 This is a cross-sectional schematic diagram of a stirring cup assembly according to one embodiment of this application.

[0034] Figure 7 for Figure 6 An enlarged schematic diagram of the structure at point A in the middle.

[0035] Figure 8This is an exploded structural diagram of a stirring cup assembly according to one embodiment of this application.

[0036] Figure label:

[0037] 10. Main unit; 101. Main unit air inlet; 102. Main unit air outlet; 103. Cup body mounting cavity; 104. First boss; 105. Second boss; 11. Mixing cup assembly; 111. Cup body; 112. Crushing blade; 113. Cup body outer shell; 114. Motor; 115. Cooling fan; 116. Cup body air inlet; 117. Cup body air outlet; 118. First recess; 12. Motor cover; 13. Centrifugal fan cover; 131. Annular part; 132. Notch; 133. Extension; 134. Second recess; 14. Air inlet channel; 15. Housing; 16. Base; 161. Protrusion; 162. Air inlet hole; 163. Air outlet hole; 17. Air inlet duct; 18. Air outlet cover; 19. Second seal; 20. Shield; 201. Mounting part; 202. Baffle; 203. Trigger rib; 21. Guide post; 22. Spring; 23. Screw. Detailed Implementation

[0038] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0040] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0043] like Figures 1 to 8 As shown, this application provides a performance-optimized food processor, including a main unit 10 and a mixing cup assembly 11 mounted on the main unit 10. The mixing cup assembly 11 includes a cup body 111, a pulverizing blade 112 disposed within the cup body 111, a cup body outer shell 113 fixed to the lower end of the cup body 111, and a motor 114 disposed within the cup body outer shell 113 for driving the pulverizing blade 112 to rotate. A cooling fan 115 is provided at the lower end of the motor 114. The cup body outer shell 113 is provided with a motor cover 12 enclosing the motor 114 and a centrifugal fan shroud 13 disposed below the motor cover 12 and communicating with the motor cover 12. The centrifugal fan shroud 13 surrounds the cooling fan 115. An air inlet channel 14 is provided between the motor cover 12 and the outer shell 113. A cooling air duct is formed inside the motor cover 12 to allow airflow to flow axially through the rotor of the motor 114. An air outlet channel is formed inside the centrifugal fan shroud 13 to allow airflow to flow radially away from the motor 114. The main unit 10 is provided with a main unit air inlet 101 and a main unit air outlet 102. The lower end of the air inlet channel 14 is connected to the main unit air inlet 101, and the upper end of the air inlet channel 14 is connected to the cooling air duct. The cooling air duct connects the air inlet channel 14 and the air outlet channel. The air outlet channel is connected to the main unit air outlet 102.

[0044] This food processing machine, by setting a centrifugal fan shroud 13 at the position of the cooling fan 115 to form a horizontal air outlet channel inside, allows the airflow passing through the motor 114 to flow into the air outlet channel and then flow laterally for a certain distance before exiting the cup shell 113. Compared with the existing method of direct airflow from the cup 111, this method extends the airflow path, which is beneficial for the energy attenuation of motor 114 noise and airflow noise during propagation, thereby achieving noise reduction. Furthermore, the airflow in the cup shell 113 is not simply straight in and out, but flows along a curved path. During the exhaust process, the hot airflow will not flow back into the cup shell 113 and affect the heat dissipation of the motor 114, thus ensuring the heat dissipation efficiency and effect of the motor 114 and improving the heat dissipation performance of the machine.

[0045] It is understandable that a centrifugal air duct is formed within the centrifugal fan shroud 13, and the cooling fan 115 can be a centrifugal fan. Under the action of centrifugal force, the airflow can be thrown outward in an orderly manner. The airflow experiences pressure and speed changes during the flow process, which can make the airflow more orderly discharged. Moreover, the blades of the centrifugal fan can better guide the airflow, reduce airflow turbulence and eddy current generation, which helps to reduce noise caused by unstable airflow, thereby further improving the noise reduction effect. In addition, by setting a motor cover 12 on the outside of the motor 114, on the one hand, it helps to guide the airflow to flow through the rotor of the motor 114 to achieve the heat dissipation temperature requirements of the motor 114. On the other hand, the motor cover 12 can block and absorb the noise of the motor 114, and can reflect some sound waves. The sound waves are reflected multiple times within the motor cover 12, effectively reducing the propagation of the noise of the motor 114 to the outside, thereby reducing the overall noise level and improving the noise reduction performance of the machine.

[0046] It is understandable that when the airflow flows along the air outlet channel inside the centrifugal fan shroud 13, the airflow generally flows from the position of the motor shaft at the center of the motor 114 in a direction away from the motor shaft. Specifically, the airflow flowing axially through the rotor of the motor 114 can enter the air outlet channel from multiple positions around the motor shaft and then flow radially towards the air outlet 102 of the main unit. The air outlet channel can be formed by the centrifugal fan shroud 13 alone, that is, the centrifugal fan shroud 13 has a bottom wall and side walls, and its bottom wall and side walls enclose to form the air outlet channel. Alternatively, the air outlet channel can also be formed by the centrifugal fan shroud 13 and the cup shell 113 together, that is, the centrifugal fan shroud 13 adopts a structure with both the top and bottom open, and the side walls of the centrifugal fan shroud 13 and the bottom wall of the cup shell 113 enclose to form the air outlet channel.

[0047] The motor 114 in this application is a series-wound motor 114. Since the rotor windings located in the middle of the motor 114 generate a large amount of heat, cooling the motor 114 primarily requires reducing the temperature of the rotor windings. To allow more airflow into the cooling duct to pass over the rotor, the motor cover 12 can be positioned close to the outer wall of the motor 114, creating a small gap or even contact between the cover 12 and the outer wall of the motor 114. This reduces the airflow between the cover 12 and the outer wall of the motor 114, thereby guiding more airflow towards the rotor of the motor 114. The cooling fan 115 is a centrifugal fan, such as... Figure 3 As shown, the design of the centrifugal air duct helps the airflow to be thrown out circumferentially around the centrifugal air duct, enhancing exhaust and ensuring heat dissipation efficiency.

[0048] In a preferred embodiment of this application, the main unit air inlet 101 and the main unit air outlet 102 are arranged opposite to each other and are respectively located on the front and rear sides of the main unit 10.

[0049] like Figure 2 and Figure 4 As shown, in this embodiment, when the main unit's air inlet 101 and air outlet 102 are arranged opposite each other, the air inlet position of the air inlet channel 14 and the air outlet position of the air outlet channel can be arranged opposite each other, which can maximize the heat dissipation path of the motor 114. On the one hand, the air inlet position and the air outlet position are far apart, avoiding the backflow of hot air. On the other hand, the extended airflow path can greatly reduce noise energy, thus greatly reducing the noise transmitted to the outside world and improving the user experience. By placing the main unit's air outlet 102 on the rear side of the main unit 10, according to the user's habit of the front side of the main unit 10 facing the user, the hot air discharged can be prevented from scalding the user, improving the safety of use.

[0050] Figure 2 The direction of the central arrow indicates the heat dissipation path of the machine. The airflow traverses a large area from the inlet to the outlet within the outer casing 113 of the cup body. This not only prevents hot air backflow but also extends the heat dissipation path, thereby enhancing noise reduction and improving the machine's heat dissipation and noise reduction performance. It is understood that in other embodiments, the main unit's air inlet 101 and main unit's air outlet 102 may also be positioned relative to each other on the left and right sides of the main unit 10, and the air inlet position of the air inlet channel 14 and the air outlet position of the air outlet channel are also correspondingly set.

[0051] In a preferred embodiment of this application, the centrifugal fan shroud 13 includes an annular portion 131 and an extension portion 133 extending outward from a notch 132 on one side of the annular portion 131. The extension portion 133 is disposed on the side opposite to the air inlet channel 14, and the main unit air outlet 102 is disposed below the extension portion 133. The distance from the inner sidewall of the annular portion 131 to the cooling fan 115 gradually decreases from the notch 132 in the direction away from the notch 132.

[0052] like Figure 3 As shown, in this embodiment, the air outlet position of the air outlet channel and the air inlet position of the air inlet channel 14 are arranged opposite each other, which maximizes the heat dissipation path of the motor 114. The air inlet and outlet positions are far apart, avoiding the backflow of hot air. Moreover, the airflow has a longer radial flow path in the air outlet channel, which can improve the noise reduction effect. The distance from the inner wall of the annular portion 131 to the cooling fan 115 gradually decreases from the notch 132 away from the notch 132, so that the cooling fan 115 is eccentrically arranged relative to the annular portion 131. This allows a high-pressure zone to be formed relative to the notch 132 at the position away from the notch 132. As a result, the cooling fan 115 can drive the airflow to move more smoothly towards the notch 132 during rotation, thereby enhancing the exhaust flow and improving the heat dissipation efficiency. Figure 3 As shown, the airflow flows along the annular portion 131 and then flows into the extension portion 133 from the notch 132. After exiting from the outlet position there, it is discharged outward through the main unit's air outlet 102. The extension portion 133 is designed to facilitate the formation of an air outlet path in conjunction with the related structures of the main unit 10.

[0053] In a preferred embodiment of this application, a gap is provided between the motor cover 12 and the outer side wall of the motor 114, and a first sealing element is provided in the gap. The airflow flowing from the air inlet channel 14 into the heat dissipation channel flows to the rotor winding at the center of the motor 114 under the action of the first sealing element.

[0054] In this embodiment, in order to improve the heat dissipation effect of the rotor winding at the center of the motor 114, the motor cover 12 can be set close to the outer wall of the motor 114 to reduce the airflow flowing into the space between the motor cover 12 and the outer wall of the motor 114. Furthermore, a first sealing element is set in the gap between the motor cover 12 and the outer wall of the motor 114. Then, when the airflow flows into the heat dissipation duct, the airflow can flow fully to the rotor in the middle of the motor 114, which can effectively cool down the rotor winding with large heat generation, thereby meeting the overall heat dissipation requirements of the motor 114.

[0055] In a preferred embodiment of this application, the main unit 10 includes a housing 15 and a base 16 disposed at the bottom of the housing 15. The base 16 is provided with an upwardly protruding part 161. The top wall of the protruding part 161 is provided with an air inlet hole 162. An air inlet duct 17 is provided between the housing 15 and the protruding part 161. The upper and lower ends of the air inlet duct 17 are respectively connected to the main unit air inlet 101 and the air inlet hole 162.

[0056] like Figure 5 As shown, in this embodiment, the main unit 10 adopts a separate housing 15 and base 16 for easy disassembly of the main unit 10 to install power boards and other components inside. The main unit 10 also features an air inlet duct 17, providing airflow to the mixing cup assembly 11 and ensuring proper heat dissipation of the motor 114 inside the mixing cup assembly 11, thus guaranteeing normal machine operation. To ensure smooth airflow, the air inlet 162 of the main unit 10 is positioned higher than the bottom wall of the base 16, facilitating the flow of external air from the concave space formed by the protrusion 161 into the air inlet 162, preventing airflow obstruction and improving airflow efficiency, thereby ensuring the heat dissipation efficiency of the motor 114. Furthermore, the horizontal orientation of the air inlet 162 allows for vertical airflow into the main unit 10, further improving airflow efficiency. Additionally, the air inlet 162 is positioned higher than the machine's surface, preventing water ingress and protecting the internal electrical components of the main unit 10, thus extending the machine's lifespan. The protrusion 161 is formed by the upward protrusion of part of the bottom wall of the base 16, which provides the conditions for setting the air inlet 162 at a high position.

[0057] In one embodiment, the base 16 is provided with an air outlet hood 18, an air outlet duct is formed inside the air outlet hood 18, the upper end of the air outlet hood 18 is connected to the air outlet 102 of the main unit, and the lower end of the air outlet hood 18 abuts against the side wall of the base 16 and is connected to the air outlet hole 163 on the side wall of the base 16.

[0058] like Figure 5As shown, in this embodiment, the air outlet hood 18 is used to form an air outlet duct, which can further extend the airflow path, thereby reducing noise energy and improving the noise reduction effect. The air outlet 163 is set on the side wall of the base 16, which helps to extend the path of the air outlet duct and allows the air outlet 163 to be further away from the air inlet 162, preventing the exhaust hot air from flowing back from the air inlet 162, thereby ensuring the heat dissipation effect of the machine.

[0059] It is understood that in other embodiments, the air outlet 163 may also be provided on the bottom wall of the base 16, or the base 16 may also be provided with other protrusions, and the air outlet 163 may be provided on other protrusions.

[0060] In a preferred embodiment, the air inlet 162 and the air outlet 163 are respectively located on both sides of the motor shaft of the motor 114.

[0061] In this embodiment, by increasing the distance between the air inlet 162 and the air outlet 163, interference between the air intake and exhaust of the host 10 can be prevented, and the phenomenon of some of the exhaust hot airflow flowing back from the air inlet 162 can be prevented, thereby ensuring the heat dissipation effect of the machine.

[0062] In a preferred embodiment of this application, a second sealing element 19 is provided at the connection position between the motor cover 12 and the centrifugal fan cover 13.

[0063] like Figure 2 As shown, in this embodiment, by strengthening the sealing connection between the motor cover 12 and the centrifugal fan cover 13, it is possible to prevent some of the hot airflow that carries away the heat of the motor 114 from flowing into the cup shell 113 through the gap between the motor cover 12 and the centrifugal fan cover 13 and causing it to meander inside the cup shell 113, which would lead to a temperature rise around the motor 114 and affect the heat dissipation effect of the motor 114. By setting the second sealing element 19, the hot airflow can fully flow from the heat dissipation channel into the air outlet channel and then be discharged, thus ensuring the heat dissipation effect of the motor 114.

[0064] In a preferred embodiment of this application, the bottom of the stirring cup assembly 11 is provided with a cup body air inlet 116 communicating with the air inlet channel 14 and a cup body air outlet 117 communicating with the air outlet channel. A shielding member 20 is movably installed inside the cup body shell 113. The shielding member 20 opens the cup body air inlet 116 and the cup body air outlet 117 when the stirring cup assembly 11 is installed on the main unit 10, and closes the cup body air inlet 116 and the cup body air outlet 117 when the stirring cup assembly 11 is separated from the main unit 10.

[0065] like Figure 2 , Figure 6 and Figure 7As shown in this embodiment, in order to solve the problem of water entering the bottom of the mixing cup assembly 11 when it is operated alone, such as when it is placed alone on a wet surface or during washing, which may cause abnormal power supply or damage to the internal electrical components of the mixing cup assembly 11, a shield 20 is provided inside the outer shell 113 of the cup body. After the mixing cup assembly 11 is removed from the main unit 10, the shield 20 closes the air inlet 116 and the air outlet 117 of the cup body, achieving a sealed and waterproof effect, which can improve the performance and lifespan of the machine. On this basis, the shield 20, as a movable part, can open the air inlet 116 and the air outlet 117 of the cup body when the mixing cup assembly 11 is installed in the main unit 10, thereby ensuring the connection of the air duct between the main unit 10 and the mixing cup assembly 11, meeting the heat dissipation requirements of the whole machine. Therefore, it takes into account both the waterproofing of the mixing cup assembly 11 and the heat dissipation of the whole machine, which can improve the overall performance of the machine and enhance the user experience.

[0066] Specifically, the shielding member 20 is movable relative to the outer shell 113 of the cup. The structure and movement of the shielding member 20 are related to the opening direction of the air inlet 116 and the air outlet 117 of the cup, and can be set according to actual needs. In some embodiments, the air inlet 116 and the air outlet 117 of the cup are opened horizontally. Correspondingly, the shielding member 20 has, for example, a horizontally arranged shielding part. The shielding part can control the opening and closing of the air inlet 116 and the air outlet 117 of the cup by moving horizontally or flipping. In other embodiments, the air inlet 116 and the air outlet 117 of the cup are opened vertically. Correspondingly, the shielding member 20 has, for example, a vertically arranged shielding part. The shielding part can control the opening and closing of the air inlet 116 and the air outlet 117 of the cup by moving vertically.

[0067] In one embodiment, the main unit 10 has a recessed cup mounting cavity 103. The bottom wall of the cup mounting cavity 103 has a first protrusion 104 and a second protrusion 105. The inner side wall of the first protrusion 104 has a main unit air inlet 101, and the inner side wall of the second protrusion 105 has a main unit air outlet 102. The cup shell 113 has a first recess 118 that is inserted into the first protrusion 104. The centrifugal fan shroud 13 has a second recess 134 that is inserted into the second protrusion 105. The top of the first recess 118 and the second recess 134 are movably mounted with a shield 20. When the first protrusion 104 is inserted into the first recess 118, it pushes the shield 20 upward. When the second protrusion 105 is inserted into the second recess 134, it pushes the shield 20 upward.

[0068] like Figure 2As shown, in this embodiment, the main unit 10 is provided with a first protrusion 104 and a second protrusion 105. On the one hand, the first protrusion 104 and the second protrusion 105 can be inserted and engaged with the first recess 118 and the second recess 134 respectively to realize the installation and positioning of the stirring cup assembly 11, which facilitates the quick installation of the stirring cup assembly 11 and ensures its installation stability, avoiding shaking during operation and improving working stability. On the other hand, the first protrusion 104 and the second protrusion 105 can provide the main unit air inlet 101 and the main unit air outlet 102. By setting the main unit air inlet 101 on the inner side wall of the first protrusion 104 and the main unit air outlet 102 on the inner side wall of the second protrusion 105, when stirring... After the cup assembly 11 is removed, liquid can be prevented from flowing directly downwards into the host 10 through the host air inlet 101 and host air outlet 102, reducing the risk of water ingress and protecting the internal electrical components of the host 10. In addition, openings are avoided on the top of the first protrusion 104 and the second protrusion 105. In this way, the top of the first protrusion 104 and the second protrusion 105 can act as a trigger point to push the shield 20 when the mixing cup assembly 11 is installed, without the need to set an additional trigger structure in the host 10. This simplifies the structure of the host 10. Moreover, the shield 20 is triggered to move when the mixing cup assembly 11 is installed, without the need for additional steps, which saves user operation and improves the user experience.

[0069] In this embodiment, as Figure 7 and Figure 8 As shown, the first recess 118 is provided with a cup body air inlet 116 with a side opening facing the main unit air inlet 101, and the second recess 134 is provided with a cup body air outlet 117 with a side opening facing the main unit air outlet 102. The shield 20 includes a horizontally arranged mounting part 201 and a baffle 202 extending downward from one side of the mounting part 201. The bottom of the mounting part 201 is provided with a downwardly extending trigger rib 203. When the stirring cup assembly 11 is installed, the top of the first boss 104 and the top of the second boss 105 can push the trigger rib 203 at the corresponding position, thereby moving the baffle 202 upward to open the cup body air inlet 116 and the cup body air outlet 117.

[0070] Furthermore, the shield 20 is provided with a reset member. When the stirring cup assembly 11 is separated from the main unit 10, the shield 20 moves downward under the action of the reset member to close the cup body air inlet 116 and the cup body air outlet 117.

[0071] Furthermore, such as Figure 7 and Figure 8As shown, the outer shell 113 of the cup and the centrifugal fan shroud 13 are provided with guide posts 21 at the corresponding installation positions of the shield 20. The shield 20 moves vertically along the guide posts 21. In this embodiment, the reset member is a spring 22, which is sleeved on the guide post 21, and the top of the guide post 21 is provided with a screw 23 inserted into the guide post 21. The screw 23 can prevent the spring 22 from coming out of the guide post 21. When the shield 20 moves upward, the shield 20 moves along the guide post 21 and compresses the spring 22. The spring 22 undergoes elastic deformation. When the stirring cup assembly 11 is removed from the main unit 10, the force acting on the shield 20 is canceled. At this time, the shield 20 moves downward under the elastic force of the spring 22 until the baffle 202 closes the air inlet 116 and the air outlet 117 of the cup, thereby achieving the sealing and waterproofing of the stirring cup assembly 11.

[0072] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0073] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0074] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A performance-optimized food processor, comprising a main unit and a mixing cup assembly mounted on the main unit, the mixing cup assembly comprising a cup body, a pulverizing blade disposed within the cup body, a cup body outer shell fixed to the lower end of the cup body, and a motor disposed within the cup body outer shell for driving the pulverizing blade to rotate, wherein a cooling fan is provided at the lower end of the motor, characterized in that, The outer shell of the cup body is provided with a motor cover that encloses the motor and a centrifugal fan cover located below the motor cover and communicating with the motor cover. The centrifugal fan cover is arranged around the cooling fan. An air inlet channel is provided between the motor cover and the outer shell of the cup body. A cooling air duct is formed inside the motor cover to allow airflow to flow axially through the rotor of the motor. An air outlet channel is formed inside the centrifugal fan cover to allow airflow to flow radially away from the motor. The main unit is provided with a main unit air inlet and a main unit air outlet. The lower end of the air inlet channel is connected to the main unit air inlet, and the upper end of the air inlet channel is connected to the cooling air duct. The cooling air duct connects the air inlet channel and the air outlet channel. The air outlet channel is connected to the main unit air outlet.

2. The performance-optimized food processing machine according to claim 1, characterized in that, The air inlet and air outlet of the main unit are arranged opposite each other and are respectively located on the front and rear sides of the main unit.

3. The performance-optimized food processing machine according to claim 1, characterized in that, The centrifugal fan shroud includes an annular portion and an extension portion extending outward from a notch on one side of the annular portion. The extension portion is located on the side opposite to the air inlet channel. The main unit's air outlet is located below the extension portion. The distance from the inner wall of the annular portion to the cooling fan gradually decreases from the notch towards the direction away from the notch.

4. The performance-optimized food processing machine according to claim 1, characterized in that, A gap is provided between the motor cover and the outer wall of the motor, and a first sealing element is provided in the gap. The airflow flowing from the air inlet channel into the heat dissipation channel flows to the rotor winding at the center of the motor under the action of the first sealing element.

5. The performance-optimized food processing machine according to claim 1, characterized in that, The main unit includes a housing and a base located at the bottom of the housing. The base has an upwardly protruding part, and the top wall of the protruding part has an air inlet hole. An air inlet duct is provided between the housing and the protruding part, and the upper and lower ends of the air inlet duct are respectively connected to the air inlet of the main unit and the air inlet hole.

6. The performance-optimized food processing machine according to claim 5, characterized in that, The base is provided with an air outlet cover, and an air outlet duct is formed inside the air outlet cover. The upper end of the air outlet cover is connected to the air outlet of the main unit, and the lower end of the air outlet cover abuts against the side wall of the base and is connected to the air outlet hole on the side wall of the base.

7. The performance-optimized food processing machine according to claim 6, characterized in that, The air inlet and the air outlet are respectively located on both sides of the motor shaft.

8. The performance-optimized food processing machine according to claim 1, characterized in that, A second sealing element is provided at the connection position between the motor cover and the centrifugal fan cover.

9. A performance-optimized food processing machine according to any one of claims 1 to 8, characterized in that, The bottom of the mixing cup assembly is provided with a cup body air inlet that connects to the air inlet channel and a cup body air outlet that connects to the air outlet channel. A shield is movably installed inside the cup body shell. The shield opens the cup body air inlet and the cup body air outlet when the mixing cup assembly is installed on the main unit, and closes the cup body air inlet and the cup body air outlet when the mixing cup assembly is separated from the main unit.

10. A performance-optimized food processing machine according to claim 9, characterized in that, The main unit has a recessed cup mounting cavity. The bottom wall of the cup mounting cavity has a first protrusion and a second protrusion. The inner side wall of the first protrusion has the air inlet of the main unit, and the inner side wall of the second protrusion has the air outlet of the main unit. The outer shell of the cup has a first recess that is inserted into the first protrusion. The centrifugal fan shroud has a second recess that is inserted into the second protrusion. The top of the first recess and the second recess are movably mounted with the shielding member. When the first protrusion is inserted into the first recess, it pushes the shielding member upward. When the second protrusion is inserted into the second recess, it pushes the shielding member upward.

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