Food processor capable of improving heat dissipation effect

Abstract

The utility model discloses a food processor capable of improving the heat dissipation effect, the food processor comprises a main machine and a cup body assembly installed on the main machine, a motor assembly and a power panel are arranged in the main machine, the motor assembly comprises a brushless motor, the brushless motor is provided with a motor heat dissipation cavity, the power panel is arranged below the motor assembly, and the motor heat dissipation cavity is communicated with the motor heat dissipation cavity. The motor assembly is provided with a first air inlet and a first air outlet which are communicated with the motor heat dissipation cavity, the power panel is provided with a high-temperature area and a low-temperature area in the transverse direction, the high-temperature area is provided with an air inlet channel, the side, away from the high-temperature area, of the low-temperature area is provided with an air outlet channel, the air inlet channel is communicated with the first air inlet, and the air outlet channel is communicated with the second air outlet. And the air outlet duct is communicated with the first air outlet. According to the food processor, the heat dissipation requirements of the power panel and the motor assembly can be met, the motor assembly and the power panel are stacked up and down and are compactly arranged in the axial direction, the axial size and the radial size of the main machine can be reduced, and therefore miniaturization of the whole machine can be promoted.

Description

Technical Field

[0001] The utility model relates to the field of food processing machines, in particular to a food processing machine with improved heat dissipation effect. Background Art

[0002] There are two installation methods for variable frequency blenders on the market. One is to place the power board and motor in parallel. When the machine is operating, external air can pass through both the power board and the motor to dissipate heat. However, this arrangement results in a larger radial volume of the machine, resulting in a larger footprint. The other is to place the power board below the motor. This arrangement can promote radial miniaturization of the entire machine, but the heat dissipation effect of this type of machine is currently poor.

[0003] Regarding the type in which the power board is arranged below the motor, there is a food processing machine in which the motor assembly and the power board assembly are stacked from top to bottom. The heat dissipation path when the machine is working is that the air flow first flows through the power board assembly and then flows through the motor, which can take into account the heat dissipation requirements of the power board and the motor. However, this solution further arranges an air duct assembly between the motor assembly and the power board assembly to form an exhaust air duct, which not only increases the structural complexity, but also causes the axial size of the entire machine to become larger, which is still not conducive to the miniaturization of the entire machine. Utility Model Content

[0004] The utility model provides a food processing machine with improved heat dissipation effect, aiming to solve the problem that existing food processing machines cannot take into account both the miniaturization of the structure and the heat dissipation requirements of functional components.

[0005] The utility model discloses a food processing machine with improved heat dissipation effect, comprising a main unit and a cup body assembly installed on the main unit, wherein a motor assembly and a power supply board are arranged in the main unit, wherein the motor assembly comprises a brushless motor, wherein the brushless motor has a motor heat dissipation cavity, the power supply board is arranged below the motor assembly, and the motor assembly is provided with a first air inlet and a first air outlet respectively connected to the motor heat dissipation cavity, the power supply board is laterally provided with a high-temperature zone and a low-temperature zone, the high-temperature zone is provided with an air inlet duct, and the low-temperature zone is provided with an air outlet duct on a side away from the high-temperature zone, the air inlet duct is connected to the first air inlet, and the air outlet duct is connected to the first air outlet.

[0006] The food processor of the present invention with improved heat dissipation effect also has the following additional technical features:

[0007] At least 2 / 3 of the projection of the power board on the horizontal plane is located within the projection range of the motor assembly on the horizontal plane.

[0008] A cover is provided between the power board and the motor assembly. The cover and the high-temperature area of the power board are enclosed to form the air inlet duct. The cover and the bottom of the host are enclosed to form the air outlet duct.

[0009] The maximum outer diameter of the cover is not greater than the maximum outer diameter of the motor assembly.

[0010] A main unit air inlet is provided at the bottom of the main unit, and the main unit air inlet is arranged horizontally corresponding to the high temperature zone.

[0011] The high temperature zone is provided with a plurality of heat sinks arranged at intervals, a gap is formed between two adjacent heat sinks, and the extending direction of the gap is the same as the flow direction of the airflow.

[0012] The motor assembly includes a motor upper cover and a motor lower cover that clamp the brushless motor up and down. The bottom wall of the motor lower cover is provided with a first air inlet corresponding to the end of the air inlet duct, and the side wall of the motor lower cover is provided with a first air outlet corresponding to the motor air outlet of the motor heat dissipation cavity.

[0013] A cover is provided between the power board and the motor assembly. The lower surface of the motor lower cover and the upper surface of the cover form an arc-shaped air duct, which is respectively connected to the first air outlet and the air outlet duct.

[0014] The cover body is provided with a hollow portion on a top wall corresponding to the low-temperature zone, and the airflow passing through the low-temperature zone can flow into the arc-shaped air duct through the hollow portion.

[0015] The top wall of the cover body is provided with a sinking groove, a column hole is provided in the sinking groove, and the motor lower cover is provided with a screw column plugged into and matched with the column hole.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0017] 1. For models where the motor and power board are stacked vertically, an existing food processor can only meet the heat dissipation requirements of the motor, and the power board has poor heat dissipation, which is not conducive to improving the performance and life of the power board; another food processor can meet the heat dissipation requirements of the motor and the power board at the same time, but an additional air duct structure is provided between the motor and the power board, resulting in an excessively large axial dimension of the entire machine, making it difficult to take into account both the miniaturization of the entire machine and the heat dissipation requirements of the functional components. Under the premise that the power board is arranged below the motor assembly, the present application sets an air inlet duct in the high-temperature zone to achieve focused heat dissipation in the high-temperature zone, which can improve the heat dissipation effect of the power board. The airflow flows through the power board and then flows to the motor assembly, achieving simultaneous heat dissipation of the power board and the motor assembly, and preventing the power board and the brushless motor from overheating and affecting the performance and life.

[0018] The motor assembly and power board are stacked one on top of the other, compactly arranged axially. This reduces the main unit's axial and radial dimensions, thereby promoting overall miniaturization. By providing air inlet and outlet ducts on either side of the low-temperature zone, the corresponding first air inlet and first air outlet are spaced radially apart to achieve adequate heat dissipation for the brushless motor and enhance its cooling efficiency. Furthermore, the air inlet and outlet ducts are positioned on either side of the low-temperature zone, allowing the motor assembly to span the power board's low-temperature zone. Stacking the motor assembly and power board vertically, compared to arranging them side by side horizontally, allows them to share radial space, reducing the overall radial dimensions and helping to meet the needs of miniaturization for food processors.

[0019] 2. When the motor assembly and power board are arranged side by side, the overall radial dimension of the two is excessively large. A larger radial overlap between the two facilitates a reduction in the overall radial dimension. In a preferred embodiment, at least two-thirds of the power board's horizontal projection lies within the motor assembly's horizontal projection. By radially overlapping the power board with the motor assembly for more than half of its area, the overall radial dimension of the two can be reduced, promoting overall miniaturization.

[0020] 3. As a preferred embodiment, a cover is provided between the power board and the motor assembly. The cover, together with the high-temperature area of the power board, forms the air inlet duct, and together with the bottom of the main unit, forms the air outlet duct. The cover facilitates the formation of the air inlet and air outlet ducts and separates the motor assembly from the power board, preventing heat transfer between the power board and the motor, thereby maintaining a suitable operating temperature and preventing damage from overheating.

[0021] As a preferred embodiment of this embodiment, the maximum outer diameter of the cover is no greater than the maximum outer diameter of the motor assembly. When the cover and the motor assembly overlap to the maximum extent in the radial direction, the cover is located within the projection range of the motor assembly, which can promote radial miniaturization of the main unit.

[0022] 4. As a preferred embodiment, a main unit air inlet is provided at the bottom of the main unit, horizontally aligned with the high-temperature zone. During operation, external air flowing into the main unit through the air inlet can flow directly into the high-temperature zone, dissipating heat there. This improves the heat dissipation efficiency of the high-temperature zone and prevents excessive temperature rise in the high-temperature zone.

[0023] 5. As a preferred embodiment, the high-temperature zone is equipped with multiple spaced-apart heat sinks, with gaps formed between adjacent fins. The gaps extend in the same direction as the airflow. Heat from components in the high-temperature zone is transferred to the heat sinks, which then dissipate the heat. This provides a larger heat dissipation area, allowing airflow to quickly remove heat and achieve efficient heat dissipation. Furthermore, airflow flows smoothly and quickly through the gaps, ensuring reliable heat dissipation.

[0024] 6. As a preferred embodiment, the motor assembly includes an upper motor cover and a lower motor cover that clamp the brushless motor from top to bottom. The bottom wall of the lower motor cover is provided with a first air inlet corresponding to the end of the air inlet duct, and the side wall of the lower motor cover is provided with a first air outlet corresponding to the motor air outlet of the motor heat dissipation cavity. By providing the upper motor cover and the lower motor cover, the upper motor cover and the lower motor cover form a housing cavity that encloses the motor. The brushless motor is double-enclosed by the motor heat dissipation cavity and the housing cavity, which not only optimizes heat dissipation but also prevents the transmission of noise generated by the motor, thereby reducing machine operating noise and providing a pleasant user experience.

[0025] As a preferred embodiment of this embodiment, a cover is provided between the power board and the motor assembly. The lower surface of the motor lower cover and the upper surface of the cover enclose a curved air duct, which is connected to the first air outlet and the outlet duct, respectively. The provision of the curved air duct serves to connect the first air outlet and the outlet duct, guiding airflow toward the outlet duct while extending the airflow path, thereby facilitating noise reduction during exhaust.

[0026] 7. As a preferred embodiment, the cover body has a hollowed-out portion on its top wall corresponding to the low-temperature zone, through which airflow passing through the low-temperature zone can flow into the curved air duct. Thus, airflow dissipating heat from the low-temperature zone can flow through the hollowed-out portion into the curved air duct and then into the outlet duct for exhaust, providing a heat dissipation path for the low-temperature zone and improving its heat dissipation efficiency.

[0027] 8. As a preferred embodiment, the top wall of the housing is provided with a recessed groove, within which a post hole is provided. The motor lower cover is provided with a screw post that engages with the post hole. By placing a post hole of a certain height within the recessed groove, the overall height of the housing can be reduced, further reducing the axial dimensions of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1This is a structural schematic diagram of a food processor according to one embodiment of the present application.

[0030] Figure 2 This is an exploded diagram of the host and its internal structure in one embodiment of the present application.

[0031] Figure 3 for Figure 2 Exploded diagram of the motor assembly and power board.

[0032] Figure 4 for Figure 3 Schematic diagram of the motor assembly and power board after stacking and assembly.

[0033] Figure 5 This is a schematic cross-sectional view of the interior of a host according to one embodiment of the present application.

[0034] Figure 6 A schematic diagram of a motor heat dissipation path according to one embodiment of the present application.

[0035] Reference numerals:

[0036] 10. Host; 101. Main body; 102. Base; 103. Second channel; 11. Cup assembly; 12. Motor assembly; 13. Power board; 131. High-temperature zone; 132. Low-temperature zone; 133. Heat sink; 134. Gap; 14. Brushless motor; 141. Motor air inlet; 142. Motor air outlet; 15. First air inlet; 16. First air outlet; 17. Air inlet duct; 18. Air outlet duct; 19. Air inlet of main unit; 20. Air outlet of main unit; 21. Cover body; 211. Top wall of cover body; 212. Side wall of cover body; 213. Partition; 214. First channel; 215. Air flow outlet; 216. Arc groove; 217. Hollow part; 218. Sunken groove; 219. Column hole; 22. Upper cover of motor; 23. Lower cover of motor; 231. Screw column; 24. Arc duct. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0039] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0040] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through a transition structure, but are connected solely through a connecting structure to form a single entity. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0044] like Figures 1 to 6 As shown, the present application provides a food processing machine with improved heat dissipation effect, including a main unit 10 and a cup body assembly 11 installed on the main unit 10, a motor assembly 12 and a power board 13 are provided in the main unit 10, the motor assembly 12 includes a brushless motor 14, the brushless motor 14 has a motor heat dissipation cavity, the power board 13 is arranged below the motor assembly 12, the motor assembly 12 is provided with a first air inlet 15 and a first air outlet 16 respectively connected to the motor heat dissipation cavity, the power board 13 is laterally provided with a high temperature zone 131 and a low temperature zone 132, the high temperature zone 131 is provided with an air inlet duct 17, and the low temperature zone 132 is provided with an air outlet duct 18 on the side away from the high temperature zone 131, the air inlet duct 17 is connected to the first air inlet 15, and the air outlet duct 18 is connected to the first air outlet 16.

[0045] For models where the motor and power board are stacked vertically, an existing food processor can only meet the heat dissipation requirements of the motor, and the power board has poor heat dissipation, which is not conducive to improving the performance and life of the power board; another food processor can meet the heat dissipation requirements of the motor and the power board at the same time, but an additional air duct structure is provided between the motor and the power board, resulting in an excessively large axial dimension of the entire machine, making it difficult to take into account both the miniaturization of the entire machine and the heat dissipation requirements of the functional components. Under the premise that the power board 13 is arranged below the motor assembly 12, the present application provides an air inlet duct 17 in the high-temperature zone 131, thereby achieving focused heat dissipation in the high-temperature zone 131 and improving the heat dissipation effect of the power board 13. After the air flows through the power board 13, it flows to the motor assembly 12, achieving simultaneous heat dissipation of the power board 13 and the motor assembly 12, and preventing the power board 13 and the brushless motor 14 from overheating and affecting the performance and life.

[0046] The motor assembly 12 and the power board 13 are stacked one above the other, and the two are arranged compactly along the axial direction, which can reduce the axial and radial dimensions of the main unit 10, thereby promoting the miniaturization of the entire machine. By providing an air inlet duct 17 and an air outlet duct 18 on both sides of the low-temperature zone 132, the corresponding first air inlet 15 and the first air outlet 16 can be spaced apart in the radial direction to achieve sufficient heat dissipation of the brushless motor 14 and improve the heat dissipation effect of the motor. At the same time, the air inlet duct 17 and the air outlet duct 18 are located on both sides of the low-temperature zone 132, respectively, so that the motor assembly 12 spans the low-temperature zone 132 of the power board. Compared with being arranged horizontally and side by side, the motor assembly 12 and the power board 13 stacked one above the other share radial space, which can reduce the overall radial dimension and help meet the needs of miniaturization of the food processing machine.

[0047] like Figure 2As shown, the host 10 includes a main body 101 and a base 102. The motor assembly 12 and the power board 13 are arranged from top to bottom in the installation cavity formed by the main body 101 and the base 102. The power board 13 can be arranged on the base 102. The base 102 is provided with a host air inlet 19 and a host air outlet 20. When the machine is working, Figure 2 or Figure 5 As shown (the arrows in the figure show the air flow path), external air flows into the main unit 10 from the main unit air inlet 19, flows through the air inlet duct 17 and then flows into the motor heat dissipation cavity through the first air inlet 15. After the motor heat dissipation is completed, the air flow flows into the air outlet duct 18 from the first air outlet 16 and is finally discharged from the main unit air outlet 20, thereby realizing the heat dissipation of the power board 13 and the motor, ensuring the performance and life of the power board 13 and the motor.

[0048] The motor is a brushless motor 14, which allows for a flatter motor and further reduces the axial dimensions of the entire unit. The motor heat dissipation cavity is provided with a motor air inlet 141 connected to the first air inlet 15 and a motor air outlet 142 connected to the first air outlet 16. When the motor is dissipating heat, air can flow through the stator and rotor of the motor, achieving effective heat dissipation.

[0049] When air flows through the power board 13, in one embodiment, it first flows to the low-temperature zone 132, then turns from the low-temperature zone 132 and flows into the air inlet duct 17 of the high-temperature zone 131. Alternatively, in another embodiment, the air flows directly into the air inlet duct 17 of the high-temperature zone 131. By focusing heat dissipation on the high-temperature zone 131, the heat dissipation requirements of the high-temperature zone 131 can be met. However, the heat dissipation requirements of the low-temperature zone 132 are lower, and not all modules in the low-temperature zone 132 require heat dissipation. Therefore, utilizing the airflow flowing in the open space within the host 10 can meet the heat dissipation needs of the low-temperature zone 132. By enhancing heat dissipation in the high-temperature zone 131, the airflow is directed faster and more rapidly to the high-temperature zone 131, thereby improving the heat dissipation efficiency of the power board 13. For example, the low-temperature zone 132 may contain switching power supplies, control modules, and EMC modules. For example, the high-temperature zone 131 may contain IPM modules (intelligent power modules, a highly integrated power electronic device that integrates power switching devices, drive circuits, and fault detection circuits for overvoltage, overcurrent, and overheating), thyristor modules, and rectifier modules. The motor in this application can, for example, be a variable frequency motor, which has a wide speed regulation range and can meet the needs of various operating conditions, thereby improving the performance of the food processor. Furthermore, variable frequency motors are quiet, which helps reduce operating noise. When an IPM module is provided in high-temperature zone 131, by rapidly directing more airflow to high-temperature zone 131, the heat dissipation effect of high-temperature zone 131 can be effectively improved, thereby ensuring the performance of multiple modules, including the IPM module.

[0050] When the motor assembly 12 and the power board 13 are arranged side by side, the overall radial size of the two is too large. If the radial overlapping area of the two is larger, it is more conducive to reducing the overall radial size.

[0051] In a preferred embodiment, at least two-thirds of the power board 13's horizontal projection lies within the horizontal projection of the motor assembly 12. By radially overlapping more than half of the power board 13 and the motor assembly 12, the combined radial dimensions of the two components are reduced, promoting overall miniaturization. In a preferred embodiment, the power board 13's horizontal projection lies entirely within the horizontal projection of the motor assembly 12, minimizing the radial dimensions of the main unit.

[0052] As a preferred embodiment, a cover 21 is provided between the power board 13 and the motor assembly 12. The cover 21 and the high-temperature area 131 of the power board 13 enclose an air inlet duct 17. The cover 21 and the bottom of the main unit 10 enclose an air outlet duct 18. The cover 21 provides conditions for the formation of the air inlet duct 17 and the air outlet duct 18. The cover 21 also separates the motor assembly 12 from the power board 13, preventing heat transfer between the power board 13 and the motor, thereby maintaining the power board 13 and the motor at a suitable operating temperature and preventing damage due to overheating.

[0053] like Figure 3 As shown, the housing 21 includes a top wall 211, side walls 212, and a partition 213 spaced apart from the side walls 212. The top wall 211, side walls 212, and partition 213, together with the high-temperature region 131 of the power board 13, form an air inlet duct 17. The housing 21 also includes a first channel 214 extending vertically downward. The base 102 is provided with a second channel 103 that plugs into and mates with the first channel 214. The first channel 214 and the second channel 103 form an air outlet duct 18. Because the low-temperature region 132 houses various electronic components and lacks sufficient space, the air outlet duct 18 is positioned on one side of the low-temperature region 132. The air inlet duct 17 and the air outlet duct 18 are located on opposite sides of the low-temperature region 132. This rationally utilizes space to promote a compact structural layout while optimizing the heat dissipation path, ensuring sufficient heat dissipation from the power board 13 and the motor.

[0054] As a preferred embodiment of this embodiment, the maximum outer diameter of the cover 21 is no greater than the maximum outer diameter of the motor assembly 12. When the cover 21 and the motor assembly 12 overlap to the maximum extent in the radial direction, the cover 21 is located within the projection of the motor assembly 12, which can promote the radial miniaturization of the host 10. Preferably, the lateral width of the power board 13 is less than the maximum lateral width of the cover 21. The cover 21 encloses the power board 13, and the maximum lateral width of the cover 21 is close to the maximum lateral width of the motor assembly 12. The motor assembly 12 and the cover 21 overlap to the maximum extent in the radial direction, which can minimize the radial size of the host 10.

[0055] As a preferred embodiment, the bottom of the host 10 is provided with a host air inlet 19, and the host air inlet 19 is arranged horizontally corresponding to the high temperature zone 131. Figure 3 As shown, during operation, external air flows into the main unit 10 through the main unit air inlet 19 and then flows directly to the high-temperature zone 131 to dissipate heat in the high-temperature zone 131, thereby improving the heat dissipation efficiency of the high-temperature zone 131 and preventing excessive temperature rise in the high-temperature zone 131. Specifically, the main unit air inlet 19 and the high-temperature zone 131 are arranged horizontally, meaning that the main unit air inlet 19 is arranged within the range corresponding to the airflow inlet of the air inlet duct 17. This allows the airflow to enter the main unit 10 through the main unit air inlet 19 and then flow into the air inlet duct 17 without making any turns, thereby improving the heat dissipation efficiency of the high-temperature zone 131.

[0056] As a preferred embodiment, the high temperature zone 131 is provided with a plurality of heat sinks 133 arranged at intervals, and a gap 134 is formed between two adjacent heat sinks 133. The extending direction of the gap 134 is the same as the direction of the air flow. Figure 3 As shown, heat is transferred from components in high-temperature zone 131 to heat sink 133, which then dissipates the heat. This provides a larger heat dissipation area, allowing airflow to quickly remove heat, achieving efficient heat dissipation. Furthermore, airflow can flow smoothly and quickly along gaps 134, ensuring reliable heat dissipation. The extension directions of heat sink 133 and gaps 134 are both aligned with the direction of airflow.

[0057] As a preferred embodiment, the motor assembly 12 includes a motor upper cover 22 and a motor lower cover 23 that clamp the brushless motor 14. The bottom wall of the motor lower cover 23 is provided with a first air inlet 15 at the end corresponding to the air inlet duct 17, and the side wall of the motor lower cover 23 is provided with a first air outlet 16 corresponding to the motor air outlet 142 of the motor heat dissipation cavity. Figure 2 、 Figure 3 or Figure 5As shown, by setting the motor upper cover 22 and the motor lower cover 23, the motor upper cover 22 and the motor lower cover 23 form a accommodating cavity that wraps the motor, and the brushless motor 14 is double-wrapped by the motor heat dissipation cavity and the accommodating cavity, which can prevent the noise generated by the motor from being transmitted outward while optimizing the heat dissipation effect, which is beneficial to reducing the working noise of the machine and pleasing the user experience.

[0058] As a preferred embodiment of this embodiment, a cover 21 is provided between the power board 13 and the motor assembly 12. The lower surface of the motor lower cover 23 and the upper surface of the cover 21 enclose a curved air duct 24, which is connected to the first air outlet 16 and the outlet duct 18, respectively. The provision of the curved air duct 24 serves to connect the first air outlet 16 and the outlet duct 18, guiding the airflow toward the outlet duct 18 while extending the airflow path, thereby facilitating noise reduction during the exhaust process.

[0059] like Figures 3 to 6 As shown, the cover 21 and the high-temperature area 131 of the power board 13 enclose an air inlet duct 17. An air outlet 215 is provided at the top of the cover 21, connecting the air inlet duct 17 with the first air inlet 15. The cover 21 and the base 102 enclose an air outlet duct 18. Since the air outlet duct 18 extends vertically, the first air outlet 16 is provided on the side wall of the motor lower cover 23. To guide the airflow, a horizontally extending curved duct 24 is used to allow airflow to flow smoothly into the air outlet duct 18 along the curved duct 24. A curved groove 216 extending in an arc is provided at the top of the cover 21, which is used to cooperate with the lower surface of the motor lower cover 23 to form the curved duct 24. A first channel 214 connected to the curved groove 216 is provided on one side of the cover 21. A second channel 103 is provided on the base 102 to plug and mate with the first channel 214. The first channel 214 and the second channel 103 constitute the air outlet duct 18.

[0060] Furthermore, in one embodiment, a hollow portion 217 is provided on the top wall of the cover body 21 corresponding to the low temperature zone 132, and the airflow passing through the low temperature zone 132 can flow into the arc-shaped air duct 24 through the hollow portion 217. Figure 3 As shown, the hollow portion 217 is arranged close to the arc groove 216. The airflow for dissipating heat to the low-temperature zone 132 can flow to the top of the cover body 21 through the hole structure of the hollow portion 217, and then flow into the arc duct 24 and then into the air outlet duct 18 for exhaust, providing a heat dissipation path for the low-temperature zone 132, which can improve the heat dissipation efficiency of the low-temperature zone 132.

[0061] Furthermore, in one embodiment, the top wall of the cover body 21 is provided with a sinking groove 218, a column hole 219 is provided in the sinking groove 218, and the motor lower cover 23 is provided with a screw column 231 that is plugged into the column hole 219. Figure 3As shown, by arranging a column hole 219 with a certain height in the sinking groove 218, the overall height of the cover body 21 can be reduced, which is conducive to further reducing the axial size of the entire machine.

[0062] When assembling the main unit 10, the power board 13 can be first fixed to the base 102, and then the cover 21 can be placed above the power board 13. The motor assembly 12 is then stacked on the cover 21 as a whole, and finally the main unit 101 is installed. There are two ways to mate the screw column 231 with the column hole 219: one is to simply plug the two together without locking the screws, which can meet the radial limit of the motor lower cover 23 and the cover 21; the other is to lock the screws on the basis of the plug-in fit, strengthening the fixing effect of the motor lower cover 23 and the cover 21. The cover 21 can be fixed to the base 102. By flexibly mounting the cover 21 on the base 102, the vibration transmitted by the upper motor assembly 12 can be reduced, which is beneficial for shock absorption and noise reduction.

[0063] The technical solutions protected by this utility model are not limited to the above-described embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments falls within the scope of protection of this utility model. Although the above description of this utility model has been provided in detail using general instructions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on this utility model. Therefore, such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food processor with improved heat dissipation effect, comprising a main unit and a cup assembly mounted on the main unit, wherein a motor assembly and a power board are provided in the main unit, wherein the motor assembly comprises a brushless motor having a motor heat dissipation cavity, and wherein: The power board is arranged below the motor assembly, and the motor assembly is provided with a first air inlet and a first air outlet respectively connected to the motor heat dissipation cavity. The power board is laterally provided with a high temperature zone and a low temperature zone, the high temperature zone is provided with an air inlet duct, and the low temperature zone is provided with an air outlet duct on a side away from the high temperature zone, the air inlet duct is connected to the first air inlet, and the air outlet duct is connected to the first air outlet.

2. A food processor with improved heat dissipation effect according to claim 1, characterized in that: At least 2 / 3 of the projection of the power board on the horizontal plane is located within the projection range of the motor assembly on the horizontal plane.

3. The food processor with improved heat dissipation effect according to claim 1, characterized in that: A cover is provided between the power board and the motor assembly. The cover and the high-temperature area of the power board are enclosed to form the air inlet duct. The cover and the bottom of the host are enclosed to form the air outlet duct.

4. A food processor with improved heat dissipation effect according to claim 3, characterized in that: The maximum outer diameter of the cover is not greater than the maximum outer diameter of the motor assembly.

5. The food processor with improved heat dissipation effect according to claim 1, characterized in that: A main unit air inlet is provided at the bottom of the main unit, and the main unit air inlet is arranged horizontally corresponding to the high temperature zone.

6. The food processor with improved heat dissipation effect according to claim 1, characterized in that: The high temperature zone is provided with a plurality of heat sinks arranged at intervals, a gap is formed between two adjacent heat sinks, and the extending direction of the gap is the same as the flow direction of the airflow.

7. The food processor with improved heat dissipation effect according to claim 1, characterized in that: The motor assembly includes a motor upper cover and a motor lower cover that clamp the brushless motor up and down. The bottom wall of the motor lower cover is provided with a first air inlet corresponding to the end of the air inlet duct, and the side wall of the motor lower cover is provided with a first air outlet corresponding to the motor air outlet of the motor heat dissipation cavity.

8. The food processor with improved heat dissipation effect according to claim 7, characterized in that: A cover is provided between the power board and the motor assembly. The lower surface of the motor lower cover and the upper surface of the cover form an arc-shaped air duct, which is respectively connected to the first air outlet and the air outlet duct.

9. The food processor with improved heat dissipation effect according to claim 8, characterized in that: The cover body is provided with a hollow portion on a top wall corresponding to the low-temperature zone, and the airflow passing through the low-temperature zone can flow into the arc-shaped air duct through the hollow portion.

10. The food processor with improved heat dissipation effect according to claim 8, characterized in that: The top wall of the cover body is provided with a sinking groove, a column hole is provided in the sinking groove, and the motor lower cover is provided with a screw column plugged into and matched with the column hole.

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