Food processor capable of improving heat dissipation effect

Abstract

The food processor comprises a machine shell, a smashing cup and a motor assembly, a vertically-arranged power panel and an air inlet cover arranged on the power panel in a covering mode are arranged on one side of the motor assembly, a heat dissipation air channel is defined by the air inlet cover and the power panel, and an air inlet air channel and an air outlet air channel are formed in the machine shell; the shell is provided with a host air inlet, the side wall, extending along the heat dissipation air duct, of the air inlet cover is provided with an air inlet, and external airflow flows into an inner cavity of the shell from the host air inlet, flows into the heat dissipation air duct through the air inlet, turns and flows to the air inlet duct through the heat dissipation air duct. The air flow turns in the heat dissipation air channel when flowing into the heat dissipation air channel, and the flowing-in direction and the flowing direction of the air flow in the heat dissipation air channel are different, so that external cold air flow flows into the side part of the flowing direction of the heat dissipation air channel, and the air flow can be subjected to balanced heat dissipation in different areas of the heat dissipation air channel.

Description

Technical Field

[0001] The utility model relates to the field of food processing machines, in particular to a food processing machine with a power supply board for controlling a motor component. Background Art

[0002] In the food processing machines currently on the market, the motor used to drive the processing module generates heat during the processing process, and the motor needs to be cooled. For the series-excited motor of the transmission, a power board specifically used to control the power supply may not be provided, or a simple power board may be provided, so there is no need to provide a separate heat dissipation module for the power board. The existing heat dissipation ducts of food processing machines include two types: one is open, such as the food processing machine disclosed in patent CN109730551A, the circuit board is arranged in the casing, the airflow depends on the motor to drive and circulate in the casing, and the circuit board only relies on the airflow flowing in the casing to achieve heat dissipation. This solution mainly achieves heat dissipation of the motor. For the circuit board or the power board, the airflow flowing on the surface can also meet the need for heat dissipation. Therefore, for this type of food processing machine, the main technical improvement direction is how to change the heat dissipation structure of the motor to enhance the heat dissipation function and reduce the noise of the motor heat dissipation duct, and it does not require more effort to consider how to improve the heat dissipation of the circuit board or the power board.

[0003] In other schemes, for example, a food processor using a variable frequency brushless motor needs to be equipped with a separate power supply control module. The power module generates a large amount of heat during the control of the motor. Therefore, the power board has a stronger heat dissipation requirement. This heat dissipation duct uses a completely closed airflow channel, such as the food processor disclosed in patent CN220124567U. The airflow flows from the inlet of the casing through the motor, the heat dissipation components, etc. to the outlet of the casing. It is completely in a closed path. The airflow flowing into the casing flows through the power board indiscriminately, from one end of the power board to the other end. Although it can ensure effective heat dissipation of the motor and the heat dissipation components, and is conducive to the noise generated by the closed motor, this scheme has high requirements for the setting of the airflow channel, low airflow utilization efficiency, and it is difficult to achieve centralized and rapid heat dissipation of the high-temperature module of the power board (the area on the power board with a large amount of heat), and there is a downstream module that is always in a hot air flow environment, resulting in poor overall heat dissipation effect of the power board. In addition, the completely closed scheme makes it impossible for other components in the casing to achieve heat dissipation. When they are in a high temperature environment for a long time, the service life and reliability of these components will be reduced.

[0004] From the above two airflow channel solutions, it can be seen that the conventional idea of ​​the existing solutions to accelerate the heat dissipation demand is to arrange the power board along the flow direction of the airflow. Whether it is a completely open power board heat dissipation method or a centralized closed power board heat dissipation method, the airflow presents a "balanced" heat dissipation method. In particular, for the centralized closed power board heat dissipation method, although the high-temperature module of the power board adopts centralized heat dissipation, whether it is the high-temperature module located in the closed interior or the low-temperature module located in the open exterior, the airflow flows evenly through the heat dissipation area, which only realizes the heat dissipation function, and cannot achieve a balance between heat dissipation efficiency and structure, installation method and cost. Utility Model Content

[0005] In order to solve the technical problem of low heat dissipation efficiency of power boards, especially in high-temperature areas, in the prior art, the utility model provides a food processing machine with improved heat dissipation effect, by changing the heat dissipation duct setting of the power board to change the air intake method and airflow flow method of the heat dissipation duct, and adopting an unbalanced and non-coherent heat dissipation flow method to achieve rapid heat dissipation of the high-temperature area of ​​the power board, so as to change and improve the utilization rate of the airflow and thus improve the heat dissipation efficiency of the power board.

[0006] The utility model discloses a food processing machine with improved heat dissipation effect, comprising a casing, a grinding cup arranged in the casing and a motor assembly arranged below the grinding cup, the motor assembly comprising a motor, the motor having a motor heat dissipation cavity, the motor heat dissipation cavity being provided with a motor air inlet and a motor air outlet, wherein a vertically placed power supply board and an air inlet cover arranged on the power supply board are provided on one side of the motor assembly, the air inlet cover and the power supply board are enclosed to form a heat dissipation duct, an air inlet duct and an air outlet duct are provided in the casing, the air inlet duct connects the heat dissipation duct and the motor air inlet, the motor air outlet is connected to the air outlet duct, the casing is provided with a main engine air inlet, the air inlet cover is provided with an air inlet on a side wall extending along the heat dissipation duct, external air flows into the inner cavity of the casing from the main engine air inlet, flows into the heat dissipation duct through the air inlet, and then turns and flows to the air inlet duct through the heat dissipation duct.

[0007] The food processing machine with improved heat dissipation effect of the utility model also has the following additional technical features:

[0008] Preferably, the power board includes a low-temperature zone and a high-temperature zone laterally arranged on one side of the low-temperature zone, the heat dissipation duct is arranged in the high-temperature zone, the air inlet faces the low-temperature zone, and the external air flows through the low-temperature zone into the heat dissipation duct of the high-temperature zone.

[0009] Preferably, the host air inlet is arranged at the bottom of the casing and below the low temperature zone, and the external air flows from the host air inlet to the low temperature zone, and turns from the low temperature zone to flow into the heat dissipation duct of the high temperature zone.

[0010] Preferably, the host air inlet is arranged in the horizontal direction, and the air inlet is arranged in the longitudinal direction, and the host air inlet is arranged approximately vertically to the air inlet.

[0011] Preferably, a plurality of heat sinks are provided in the heat dissipation duct, a heat dissipation gap is formed between two adjacent heat sinks, and the plurality of heat sinks are arranged along the extension direction of the heat dissipation duct.

[0012] Preferably, the air inlet comprises a plurality of grid holes arranged at intervals, and the grid holes are arranged relative to or staggered with the corresponding heat dissipation gaps.

[0013] Preferably, the extending direction of the heat dissipation gap is the same as the direction in which the airflow flows into the heat dissipation duct, or the heat dissipation gap is inclined toward the extending direction of the heat dissipation duct.

[0014] Preferably, a main engine air outlet is provided at the bottom of the casing, the motor assembly includes a motor seat, the motor is installed on the top of the motor seat, a accommodating cavity is provided in the motor seat, and the air outlet duct extends downward from the top of the motor seat and is connected to the main engine air outlet.

[0015] Preferably, the air outlet duct and the air inlet cover are arranged on the same side and spaced apart, and the main engine air inlet is arranged between the air inlet cover and the air outlet duct.

[0016] Preferably, a motor base is provided with a motor mounting cavity at the top, the air inlet duct is provided on the motor base and connected with the motor mounting cavity, an air outlet is provided on the top of the air inlet cover to connect with the air inlet duct through the air outlet, and the air outlet is provided on the top wall or rear side wall of the air inlet cover; an air guide portion is also provided on the top of the motor base, which is connected with the motor mounting cavity and protrudes outward, and a connecting pipe is provided in the casing, and the connecting pipe is connected with the air guide portion to form the air outlet duct.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0018] 1. The food processing machine with improved heat dissipation effect of the utility model can realize the heat dissipation of the power board and the motor at the same time, and can also meet the heat dissipation needs of the components in the casing that do not require much heat dissipation. The airflow flows into the casing and presents an open flow in the casing, and can flow through various components arranged in the casing; it further flows through the power board through the heat dissipation duct to dissipate the heat for the power board, and then flows to the motor to dissipate the heat for the motor, ensuring the heat dissipation effect of both; when the airflow flows into the heat dissipation duct, it turns in the heat dissipation duct, and the inflow direction and flow direction of the airflow in the heat dissipation duct are different, so that the side of the flow direction of the heat dissipation duct has external cold airflow flowing in, so that the airflow can be evenly cooled in different areas of the heat dissipation duct. And because the airflow flows in the heat dissipation duct after turning in the heat dissipation duct and inhales at the side, the airflow in the heat dissipation duct is not a traditional end-to-end coherent flow mode, but a non-coherent airflow mode that continuously replenishes the cold airflow, ensuring that the heat dissipation of the power board in the heat dissipation duct is more balanced and the heat dissipation efficiency is higher.

[0019] The housing is provided with a host air inlet, and the external airflow first flows into the housing through the host air inlet and dissipates the heat of the components in the housing. Since other components in the housing generate less heat and do not require a large amount of heat dissipation, the open airflow method can also meet the corresponding heat dissipation requirements. The airflow further flows into the heat dissipation duct through the air inlet, and turns in the heat dissipation duct and flows to the motor heat dissipation cavity. For power boards with large heat dissipation requirements, it can rely on a separate air duct to enhance and improve the heat dissipation efficiency, and can also rely on the lateral turning air inlet method so that each area can have a lower temperature airflow flowing in, avoiding the heat dissipation area at the rear end from being affected by the hot air flow at the front end. Setting the airflow to turn and flow means breaking the traditional airflow that flows through the area that needs heat dissipation along the flow path. The airflow flows in the heat dissipation area in a non-linear manner, but according to the preset air inlet and the airflow flow path of the heat dissipation duct, the airflow turns autonomously in the heat dissipation duct, for example, it flows into the heat dissipation duct from one side, turns in a vertical direction close to 90°, and flows along the extension direction of the heat dissipation duct. In this way, for the areas in the heat dissipation duct that need heat dissipation, external "cold air flow" is supplemented at various positions, unlike the traditional DC flow path where only the starting end is the external cold air flow and the end is always in the heated heat dissipation air flow.

[0020] 2. Based on the implementation function of the power board itself, the power board can be divided into a low-temperature zone and a high-temperature zone, and the heat dissipation duct is set in the high-temperature zone. In this way, after the airflow enters the casing, it can flow quickly from the low-temperature zone to the high-temperature zone, so that the airflow allocated to the high-temperature zone accounts for a large proportion, which is conducive to the rapid and concentrated heat dissipation of the high-temperature zone. Under the action of the heat dissipation duct in the high-temperature zone, not only can the aggregation of the airflow be guaranteed to uniformly dissipate heat at various positions in the high-temperature zone, but it is also conducive to reducing noise. In addition, for the low-temperature zone, when the airflow flows into the casing, it can dissipate heat to part of the low-temperature zone, and the utilization rate of the airflow can be improved on the premise of meeting its heat dissipation needs.

[0021] Furthermore, the airflow turns from the low temperature zone to the high temperature zone, avoiding the airflow flowing through the low temperature zone completely before flowing to the high temperature zone, so that the airflow can flow to the high temperature zone faster and more fully, enhancing the heat dissipation efficiency of the high temperature zone, and effectively improving the heat dissipation effect of the power board. Setting the airflow to turn means breaking the traditional airflow flowing through the area where heat dissipation is required along the flow path. The airflow flows in the heat dissipation area in a non-linear manner, but according to the preset host air inlet and the air inlet path of the heat dissipation duct, the airflow turns autonomously on the power board, for example, flows from one side to the power board, and flows to the adjacent air inlet path after turning in a vertical direction close to 90°. In this way, for the high temperature zone, sufficient heat dissipation airflow can be obtained; and for the low temperature zone, a control method is implemented in which more airflow is allocated to the area that needs more heat dissipation and less airflow is allocated to the area that does not need more heat dissipation, realizing an "unbalanced" heat dissipation control method, and improving the heat dissipation efficiency of the power board.

[0022] At the same time, it should be noted that various electronic devices are usually arranged on the power board, and the welding method of the electronic devices makes the power board present an uneven airflow path. The traditional heat dissipation method will cause the airflow velocity to decrease when the airflow flows through various electronic devices, thereby reducing the heat dissipation efficiency. In this solution, the airflow does not need to pass through the power board completely, but only needs to control the airflow to flow through the simple structural area of ​​the power board to increase the airflow velocity, which can better ensure the heat dissipation of the high temperature area.

[0023] 3. As a preferred embodiment, the main engine air inlet is located below the low-temperature zone, and the main engine air inlet and the high-temperature zone are offset in the horizontal direction; thus, after the airflow flows into the casing through the main engine air inlet, part of the airflow can directly dissipate heat in the low-temperature zone, thereby improving the heat dissipation efficiency of the low-temperature zone. At the same time, the airflow can turn and flow to the high-temperature zone on one side. Since the main engine air inlet and the high-temperature zone are offset in the horizontal direction, it can be avoided that part of the airflow is difficult to enter the heat dissipation duct from the side below the high-temperature zone, resulting in low airflow utilization, thereby ensuring the heat dissipation efficiency of the high-temperature zone.

[0024] 4. As a preferred embodiment, the air inlet of the host is arranged horizontally, and the air inlet of the heat dissipation duct is arranged vertically, and the air inlet of the host is arranged approximately vertically; thereby, the airflow flows upward from the air inlet of the host into the casing and then turns horizontally to flow into the heat dissipation duct, which can ensure that the airflow flows to the high temperature zone faster to achieve centralized and rapid heat dissipation in the high temperature zone.

[0025] 5. As a preferred embodiment of the present embodiment, a plurality of heat sinks arranged at intervals along the vertical direction are provided in the heat dissipation duct, and a heat dissipation gap is formed between two adjacent heat sinks. The air inlet cover includes a plurality of grid holes arranged at intervals, and the grid holes are arranged relative to or staggered with the corresponding heat dissipation gaps. Thus, the airflow can flow into the corresponding heat dissipation gaps through the grid holes, and the airflow flows horizontally through the heat dissipation gaps, so that sufficient heat dissipation can be achieved at each position at the same height, and the plurality of grid holes and the heat dissipation gaps ensure the heat dissipation of areas at different heights, which can improve the heat dissipation effect of the high temperature zone as a whole.

[0026] Furthermore, the extension direction of the heat dissipation gap is the same as the direction in which the airflow flows into the heat dissipation duct, so that the airflow can flow into the heat dissipation gap faster, and the airflow can flow through the heat dissipation gap faster, thereby improving the heat dissipation efficiency. Alternatively, the heat dissipation gap is arranged obliquely toward the direction in which the airflow flows through the heat dissipation duct, thereby, the obliquely arranged heat dissipation gap makes the path of each heat dissipation gap longer, which can reduce the overall number of heat dissipation gaps, which is conducive to the simplification of the structural arrangement, and at the same time, the airflow flows obliquely upward after passing through the grid holes horizontally, which can increase the propagation resistance of the noise along the airflow, thereby facilitating the attenuation of the noise and improving the noise reduction effect.

[0027] 6. As a preferred embodiment, a main engine air outlet is provided at the bottom of the casing, the motor assembly includes a motor seat, the motor is installed on the top of the motor seat, a accommodating cavity is provided in the motor seat, and the air outlet duct extends downward from the top of the motor seat and is connected with the main engine air outlet; thus, the air outlet duct is arranged in a certain axial space, which makes full use of the height of the motor seat. Compared with the air outlet duct being laid flat on the same horizontal plane, under the premise of a certain length of the air outlet path, it is beneficial to reduce the footprint of the whole machine and promote the miniaturization of the whole machine; moreover, the air flow has less resistance when flowing from top to bottom, which can improve the exhaust and heat dissipation effect; the accommodating cavity in the motor seat can be used to accommodate structures such as residual water boxes, which further improves the space utilization and can realize compact arrangement between structures.

[0028] As a preferred embodiment of the present embodiment, the air outlet duct and the air inlet cover are arranged on the same side and are spaced apart, and the main engine air inlet is arranged between the air inlet cover and the air outlet duct; thereby, it is possible to avoid arranging the air inlet path and the air outlet path on different sides of the motor assembly, which would cause the overall radial volume of the motor assembly and the heat dissipation module to be larger, and it is beneficial for the whole machine to have a suitable size in the front-to-back direction and a smaller size in the left-to-right direction; by concentrating the heat dissipation paths on the same side, it is also beneficial to provide a larger space on the opposite side to arrange other components (such as a slurry receiving cup, etc.), and it is possible to avoid a large temperature rise on the opposite side that affects user operation, thereby improving the user experience.

[0029] 7. As a preferred embodiment, the motor assembly includes a motor base, a motor mounting cavity is provided on the top of the motor base, the air inlet duct is arranged on the motor base, and the air inlet duct is connected with the motor mounting cavity, an air outlet is provided on the top of the air inlet cover to be connected with the air inlet duct through the air outlet, and the air outlet is arranged on the top wall or rear side wall of the air inlet cover; thereby, after the airflow dissipates the heat to the power board, it can flow into the motor mounting cavity through the air inlet duct, and then dissipate the heat to the motor, and the positional relationship between the two can be fully utilized to dissipate the heat to both, which is conducive to the compact arrangement of structural parts while ensuring the heat dissipation effect within the limited axial space.

[0030] The top of the motor base is also provided with an air guide portion that is connected to the motor mounting cavity and protrudes outward. The casing is provided with a connecting pipe, and the connecting pipe is connected to the air guide portion to form the air outlet duct. Therefore, the air outlet duct is formed by utilizing part of the structure of the motor base and adopting the connecting pipe. The structure is simple, and a certain air outlet efficiency can be guaranteed, which is conducive to the full discharge of hot air flow through the air outlet duct, and can avoid residual heat in the casing and affecting the cooling of the power board. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 on the present invention. In the drawings:

[0032] Figure 1 This is a schematic diagram of the configuration of a power board and a heat dissipation duct in one implementation of the present application.

[0033] Figure 2 for Figure 1 A magnified schematic diagram of the structure in the middle.

[0034] Figure 3 This is a schematic diagram of the arrangement of the host air inlet, heat dissipation duct and air outlet duct under one implementation mode of the present application.

[0035] Figure 4A schematic diagram of the arrangement of air outlet ducts in one implementation of the present application.

[0036] Figure 5 This is a schematic diagram of the structure of a motor base according to one embodiment of the present application.

[0037] Figure 6 An exploded schematic diagram of a motor base and a motor according to an embodiment of the present application.

[0038] Figure 7 This is a schematic diagram of the configuration of a power board and a heat dissipation duct in another embodiment of the present application.

[0039] Reference numerals:

[0040] 10. Casing; 11. Motor; 12. Power board; 121. Low temperature zone; 122. High temperature zone; 13. Air inlet cover; 14. Air inlet duct; 15. Air outlet duct; 16. Air inlet of host; 131. Air inlet; 132. Air outlet; 133. Grid hole; 134. Heat sink; 135. Heat dissipation gap; 17. Motor seat; 171. Accommodating cavity; 101. Base; 172. Motor installation cavity; 173. Connecting port; 174. Air guide; 18. Connecting pipe; 19. Air outlet of host. DETAILED DESCRIPTION

[0041] 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.

[0042] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0044] 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are only connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0047] In the present utility model, 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 utility model. 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.

[0048] like Figures 1 to 7As shown, the present application provides a food processing machine with improved heat dissipation effect, including a housing 10, a crushing cup arranged in the housing 10, and a motor assembly arranged below the crushing cup, the motor assembly including a motor 11, the motor 11 having a motor heat dissipation cavity, the motor heat dissipation cavity having a motor air inlet and a motor air outlet, a vertically placed power board 12 and an air inlet cover 13 arranged on the power board 12 are arranged on one side of the motor assembly, the air inlet cover 13 and the power board 12 are enclosed to form a heat dissipation air duct. An air inlet duct 14 and an air outlet duct 15 are also arranged in the housing 10, the air inlet duct 14 is connected to the heat dissipation air duct and the motor air inlet, the air flow in the heat dissipation air duct flows through the air inlet duct 14 and flows into the motor 11 through the motor air inlet, the motor air outlet is connected to the air outlet duct 15, so that the air flow in the motor 11 is guided out from the air outlet duct 15. The housing 10 is provided with a host air inlet 16, and the side wall of the air inlet cover 13 extending along the heat dissipation duct is provided with an air inlet 131. The airflow in the external environment flows into the housing 10 from the host air inlet 16 to dissipate heat from the components in the housing 10. Furthermore, the airflow entering the housing 10 flows into the heat dissipation duct through the air inlet 131, turns at a vertical or approximately vertical angle, and then flows to the air inlet duct 14 through the heat dissipation duct. In this way, the power board arranged in the heat dissipation duct can be dissipated, and the motor connected to the air inlet duct can also be dissipated.

[0049] For food processing machines, the heat dissipation requirements of multiple components arranged in the casing are not the same. For general components, no heat dissipation or a weak heat dissipation structure can be set to meet the requirements. For example, when a crushing cup with a heating function is arranged in the casing at the same time as other components in the casing, the heat of the crushing cup may affect other components, so other components also have certain heat dissipation requirements. Such components only need a certain amount of airflow to meet the requirements. For components such as motors and power boards, especially when using variable frequency brushless motors, the power board itself will also generate a lot of heat. Therefore, the power board itself has a high heat dissipation requirement, and the open airflow may not meet the heat dissipation requirements. First, the airflow presents an open flow in the casing, which can flow through various components arranged in the casing to dissipate heat for each component; then, the airflow flows into the heat dissipation duct through the air inlet to efficiently dissipate heat for the power board in the heat dissipation duct. Such a setting not only meets the heat dissipation requirements of general components in the casing, but also meets the heat dissipation requirements of components such as power boards and motors. The air inlet of the heat dissipation duct is arranged on the side wall of the heat dissipation duct, and the airflow turns inside the heat dissipation duct when flowing into the heat dissipation duct, so that the power board inside the heat dissipation duct can be in direct contact with the external airflow more directly, and the external cold airflow can always be supplemented in the airflow flow direction of the heat dissipation duct. Unlike the prior art, when the heat dissipation duct continuously flows from one end to the other end, the power board at the upstream end can always be in contact with the cold airflow, while the power board at the downstream end can only be in contact with the heated hot airflow, thereby reducing the heat dissipation efficiency. In particular, the electrical components at the downstream end are always subjected to higher temperatures, which affects the functions and lifespan of the corresponding electrical components.

[0050] As a preferred embodiment of the present application, Figure 1-6 As shown, the power board 12 includes a low-temperature zone 121 and a high-temperature zone 122 laterally arranged on one side of the low-temperature zone 121, an air inlet cover 13 is provided on the power board 12, and the air inlet cover 13 and the power board 12 are enclosed to form a heat dissipation duct, and the heat dissipation duct is arranged in the high-temperature zone 122, and an air inlet duct 14 and an air outlet duct 15 connected to the motor heat dissipation cavity are provided in the casing 10, the air inlet duct 14 connects the heat dissipation duct with the motor air inlet, and the motor air outlet is connected with the air outlet duct 15, and a main engine air inlet 16 is provided at the bottom of the casing 10, and the external air flow flows from the main engine air inlet 16 to the low-temperature zone 121, and turns from the low-temperature zone 121 to flow into the heat dissipation duct of the high-temperature zone 122.

[0051] In the food processing machine of the present application, the motor 11 is arranged in the casing 10, and the power board 12 is vertically arranged on one side of the motor assembly, which can promote the compactness of the structure compared to the solution in which the two are placed side by side. Since the power board 12 is arranged at a lower position, the external airflow enters the casing 10 and first dissipates the heat of the power board 12, and then dissipates the heat of the motor 11, so that the heat dissipation of both can be achieved at the same time. Furthermore, the present application can improve the heat dissipation efficiency and heat dissipation effect of the power board 12 by improving the arrangement of the power board 12 and the flow path of the airflow, so as to improve the performance and life of the power board 12.

[0052] For the power board 12, after the airflow enters the housing 10, it can flow quickly from the low temperature zone 121 to the high temperature zone 122, so that the airflow allocated to the high temperature zone 122 accounts for a large proportion, which is conducive to the rapid and concentrated heat dissipation of the high temperature zone 122, and under the action of the heat dissipation duct of the high temperature zone 122, it can not only ensure the aggregation of the airflow, so as to evenly dissipate heat at various positions of the high temperature zone 122, but also help to reduce noise; in addition, for the low temperature zone 121, when the airflow flows into the housing 10, it can dissipate heat to a part of the low temperature zone 121, and the utilization rate of the airflow can be improved on the premise of meeting its heat dissipation requirements. In addition, the airflow turns from the low temperature zone 121 to the high temperature zone 122, avoiding the airflow flowing completely through the low temperature zone 121 before flowing to the high temperature zone 122, so that the airflow can flow to the high temperature zone 122 faster and more fully, enhancing the heat dissipation efficiency of the high temperature zone 122, and effectively improving the heat dissipation effect of the power board 12. This is because for the electrical components in the low temperature zone 121, they only need to be exposed in the space inside the housing 10 to meet the heat dissipation requirements, and there is no need to set up a separate heat dissipation channel. Therefore, it is not necessary to completely flow through the low temperature zone 121, that is, it can meet the heat dissipation requirements of the low temperature zone, and it can also increase the speed and flow of the airflow flowing into the high temperature zone, improve and enhance the heat dissipation efficiency of the high temperature zone, and ensure the heat dissipation effect of the food processor. Setting the airflow to turn flow means breaking the traditional airflow flowing through the area where heat dissipation is required along the flow path. The airflow flows in the heat dissipation area in a non-linear manner, but according to the preset host air inlet and the air intake path of the heat dissipation air duct, the airflow turns autonomously on the power board, for example, flows from one side to the power board, and flows to the adjacent air intake path after turning in a vertical direction close to 90°. In this way, for the high temperature zone 122, sufficient heat dissipation airflow can be obtained; and for the low temperature zone 121, a control method is implemented in which more airflow is allocated to the area that needs more heat dissipation and less airflow is allocated to the area that does not need more heat dissipation, realizing an "unbalanced" heat dissipation control method, and improving the heat dissipation efficiency of the power board.

[0053] At the same time, it should be noted that various electronic devices are usually arranged on the power board, and the welding method of the electronic devices makes the power board present an uneven airflow path. The traditional heat dissipation method will cause the airflow velocity to decrease when the airflow flows through various electronic devices, thereby reducing the heat dissipation efficiency. In this solution, the airflow does not need to pass through the power board completely, but only needs to control the airflow to flow through the structurally simple area of ​​the power board to increase the airflow velocity, which can better ensure the heat dissipation of the high temperature area 122.

[0054] Among them, the low temperature zone 121 is distributed with, for example, a switching power supply, a control module and an EMC module (in some embodiments, the EMC module may not be arranged on the power board 12), and the high temperature zone 122 is distributed with, for example, an IPM module (i.e., an intelligent power module, which is a highly integrated power electronic device that integrates power switching devices, drive circuits, and fault detection circuits such as overvoltage, overcurrent and overheating), a thyristor module and a rectifier module. The motor of the present application may, for example, adopt a variable frequency motor, which has a wide speed regulation range and can meet the needs of various working conditions, and can improve the performance of the food processing machine. The variable frequency motor has the advantage of low noise, which is conducive to reducing working noise. When the high temperature zone 122 is provided with an IPM module, by allowing more airflow to flow quickly to the high temperature zone, the heat dissipation effect of the high temperature zone can be effectively improved to ensure the performance of multiple modules such as the IPM module.

[0055] For the motor 11, after the airflow flows out of the heat dissipation duct, it can flow into the motor heat dissipation cavity through the air inlet duct 14 and the motor air inlet to dissipate the heat of the motor 11, and then the airflow can be discharged through the motor outlet, the air outlet duct 15 and the main machine outlet 19 to complete the entire heat dissipation process. It should be noted that in order to improve the utilization rate of the airflow and prevent the hot airflow from partially flowing and staying in the housing 10, the connected air ducts can be connected by closed connection or by adding a sealed connection structure. Of course, under the premise of meeting certain heat dissipation requirements, some air ducts (such as the air inlet duct 14) can also be incompletely closed, so that the airflow can also dissipate heat for other components in the housing 10.

[0056] Furthermore, when the airflow flows to the low temperature zone 121, the airflow can flow in the open space. On the one hand, the heat dissipation requirement of the low temperature zone 121 is low, and on the other hand, not all modules in the low temperature zone 121 need heat dissipation. This arrangement is more conducive to the airflow to dissipate heat in the low temperature zone 121. At the same time, the airflow can flow faster and more to the high temperature zone 122 to strengthen the heat dissipation of the high temperature zone 122. It should be noted that although Figure 1 Only an example in which the high temperature zone 122 is provided with a heat dissipation duct is illustrated; however, in other embodiments, the low temperature zone 121 may also be provided with a heat dissipation duct.

[0057] As a preferred embodiment of the present application, the heat dissipation duct has an air inlet 131 and an air outlet 132, the air inlet 131 is arranged on the side wall of the heat dissipation duct, and the air outlet 132 is arranged at the top of the heat dissipation duct, so that the air inlet 131 and the air outlet 132 are arranged approximately vertically.

[0058] like Figure 2 As shown, the air inlet 131 and the air outlet 132 are located on two adjacent sides of the heat dissipation duct. The airflow flows into the heat dissipation duct from the air inlet 131 located on the side wall and then turns and flows out of the heat dissipation duct from the air outlet 132 along a certain direction. Such an arrangement allows the airflow to dissipate heat not only at various positions in the heat dissipation duct in the horizontal direction, but also at various positions in the heat dissipation duct in the vertical direction, thereby ensuring that all areas of the high temperature zone 122 can obtain balanced heat dissipation, and further optimizing the heat dissipation effect of the high temperature zone 122.

[0059] Among them, when the air inlet 131 is arranged along the longitudinal direction and the air outlet 132 is arranged along the transverse direction, the air inlet 131 and the air outlet 132 are in a perpendicular relationship with each other; and when the air inlet 131 is slightly inclined relative to the longitudinal direction, or the air outlet 132 is slightly inclined relative to the transverse direction, the air inlet 131 and the air outlet 132 may be in a roughly vertical relationship, depending on the specific situation. The main purpose is to make the airflow flowing into the heat dissipation duct from the air inlet turn inside the heat dissipation duct.

[0060] It should be noted that the air inlet 131 and the air outlet 132 are arranged substantially perpendicularly, and the two are arranged at an angle of substantially 90° on the straight line connection of the main airflow path, for example, the angle is set to be 85° to 95°. Of course, the actual airflow path is non-linear and cannot be observed directly, so here, the embodiment of the specific food processing machine is the path of the structural design, that is, the straight line along the air inlet 131 and the straight line along the air outlet 132, the angle between the two is substantially perpendicular.

[0061] As a preferred embodiment of the present application, the host air inlet 16 is arranged at the bottom of the housing 10 and is arranged horizontally, the air inlet 131 of the heat dissipation duct is arranged vertically, and the host air inlet 16 and the air inlet 131 are arranged approximately vertically.

[0062] like Figure 1 and Figure 2 As shown, the airflow flows upward from the main unit air inlet 16 into the housing 10 and then turns horizontally to flow into the heat dissipation duct, ensuring that the airflow flows faster to the high temperature zone 122 to achieve concentrated and rapid heat dissipation in the high temperature zone 122 without having to completely flow through the low temperature zone 121.

[0063] It should be noted that, when the host air inlet 16 is arranged in the horizontal direction and the air inlet 131 is arranged in the vertical direction, the host air inlet 16 and the air inlet 131 are perpendicular to each other; when the host air inlet 16 is slightly inclined relative to the horizontal direction, or the air inlet 131 is slightly inclined relative to the vertical direction, the host air inlet 16 and the air inlet 131 are approximately perpendicular to each other, depending on the specific circumstances.

[0064] As a preferred embodiment of the present application, the air inlet cover 13 extends vertically, and the air inlet 131 of the heat dissipation air duct is arranged on the side wall of the air inlet cover 13 close to the main engine air inlet 16 .

[0065] like Figure 1 As shown, the air inlet cover 13 vertically covers substantially the entire height of the power board 12, so as to enhance the uniformity of heat dissipation in the high temperature area 122. The air inlet 131 is provided on the side wall of the air inlet cover 13, providing conditions for the lateral air inlet of the heat dissipation duct; at the same time, in order to realize the turning of the air flow and the air outlet, the top wall of the air inlet cover 13 can be provided with an air outlet, so that the air flow flows through the heat dissipation duct and then exits from the top.

[0066] In one embodiment, a heat sink is provided in the heat dissipation duct to fit the heat generating components of the high temperature zone 122, for example, the heat sink is directly fitted with the IPM module, the thyristor module, the rectifier module, etc., to improve the heat dissipation efficiency of the corresponding module. The heat sink is provided with a plurality of heat sinks 134 in the heat dissipation duct, the heat sink 134 extends in the horizontal direction to increase the heat dissipation area of ​​the heat sink 134, the plurality of heat sinks are arranged at intervals in the vertical direction, and a heat dissipation gap 135 is formed between two adjacent heat sinks 134, the air inlet cover 13 includes a plurality of grid holes 133 arranged at intervals, each grid hole 133 may correspond to a heat dissipation gap 135, so that the airflow can flow into each heat dissipation gap 135 along each grid hole 133 at different heights, and the airflow is evenly distributed in the plurality of heat dissipation gaps 135, so that balanced heat dissipation of the high temperature zone 122 can be achieved.

[0067] Regarding the positional relationship between a single grid hole 133 and a single heat dissipation gap 135, the two can be arranged opposite each other, so that after the airflow passes through the grid hole 133, the airflow direction remains unchanged and directly flows into the heat dissipation gap 135, making the airflow flow smoother. Alternatively, the grid hole 133 and the heat dissipation gap 135 can also be arranged in a staggered manner, in which case the airflow will turn a small angle after passing through the grid hole 133 and then flow into the heat dissipation gap 135. This solution is conducive to noise reduction while meeting the heat dissipation requirements, and can reduce wind noise.

[0068] Further, regarding the extension direction of the heat dissipation gap 135, in one example, Figure 2As shown, the heat dissipation gap 135 extends in a horizontal direction, which is the same as the direction in which the airflow flows into the heat dissipation duct. Alternatively, in another example, the heat dissipation gap 135 may extend at a certain angle, specifically tilted upward, so as to guide the airflow to flow out of the heat dissipation duct.

[0069] Furthermore, the airflow can completely flow through each heat dissipation gap 135 and then turn and flow out of the heat dissipation duct, or the airflow can flow horizontally to a certain position of the heat dissipation gap 135 (preferably the middle and rear position of the heat dissipation gap 135) and then turn and flow upward. During the upward flow, the heat on the heat sink 134 can be taken away again. Either way can be selected according to the degree of cooling of the high temperature zone 122.

[0070] As a preferred embodiment of the present application, a main engine air outlet 19 is provided at the bottom of the casing 10, the motor assembly includes a motor seat 17, the motor 11 is installed on the top of the motor seat 17, a accommodating cavity 171 is provided in the motor seat 17, and the air outlet duct 15 extends downward from the top of the motor seat 17 and is connected to the main engine air outlet 19.

[0071] like Figure 4 As shown, the air outlet duct 15 is arranged in a certain axial space, making full use of the height of the motor seat 17. Compared with the air outlet duct 15 laid flat on the same horizontal plane, under the premise of a certain length of the air outlet path, it is beneficial to reduce the floor space of the whole machine and promote the miniaturization of the whole machine; and the air flow has less resistance when flowing from top to bottom, which can improve the exhaust and heat dissipation effect; the motor seat 17 is provided with a receiving cavity 171 that can be used to accommodate structures such as residual water boxes, further improving the space utilization rate and realizing a compact arrangement between structures. Further utilizing the axial extension length of the air outlet duct 15, the disordered airflow discharged from the motor is guided into a regular airflow, and further discharged in an orderly manner through the main air outlet, which can reduce the working noise of the food processor.

[0072] Specifically, the motor seat 17 includes, for example, a support wall extending downward to the base 101 of the housing 10, and the support wall and the base 101 can enclose a receiving chamber 171, and the receiving chamber 171 is open laterally. When the food processor includes a liquid receiving cup, the liquid receiving cup, such as a residual water box, can be pushed and pulled horizontally in and out of the receiving chamber 171. Since part of the structure of the motor 11 will not extend into the receiving chamber 171 to occupy the space of the receiving chamber 171, it is conducive to setting a larger volume residual water box, which can reduce the number of times the user pours waste water and improve the user experience. The motor 11 can adopt a brushless motor 11, so that under the premise of adopting a large volume residual water box, the axial size of the whole machine can be reduced, which is conducive to the miniaturization of the whole machine.

[0073] Furthermore, the air outlet duct 15 and the air inlet cover 13 are arranged on the same side and spaced apart, and the main engine air inlet 16 is arranged between the air inlet cover 13 and the air outlet duct 15 .

[0074] like Figure 3 As shown, the air outlet duct 15 and the air inlet cover 13 are both arranged at the rear side of the main unit, so that the overall size of the machine in the left-right direction can be smaller, which can reduce the space occupied by the machine. By concentrating the heat dissipation paths on the same side, it is beneficial to provide a larger space for the opposite side (such as the front side of the main unit) to arrange other components (such as the slurry receiving cup, etc.), and at the same time, it can avoid the opposite side having a large temperature rise that affects the user's operation, which can improve the user's experience. Figure 3 As shown, in order not to affect the heat dissipation effect of the low temperature zone 121, the module that needs heat dissipation in the low temperature zone 121 can be arranged above the host air inlet 16 to avoid the air outlet duct 15 blocking the area that needs heat dissipation.

[0075] As a preferred embodiment of the present application, the motor assembly includes a motor seat 17, a motor mounting cavity 172 is provided on the top of the motor seat 17, the air inlet duct 14 is formed on the motor mounting seat 17, and the air inlet duct 14 is connected with the motor mounting cavity 172, an air outlet is provided on the top of the air inlet cover 13 to be connected with the air inlet duct 14 through the air outlet, and the air outlet is provided on the top wall or rear side wall of the air inlet cover 13.

[0076] like Figure 3 As shown, the air inlet cover 13 extends vertically. When the machine is working, the heat dissipation path is: main machine air inlet 16-air inlet-heat dissipation duct-air outlet-air inlet duct 14-motor installation cavity 172-motor air inlet-motor heat dissipation cavity-motor air outlet-motor installation cavity 172-air outlet duct 15-main machine air outlet 19. In order to realize the communication between the heat dissipation duct and the air inlet duct 14, in one embodiment, as shown in FIG. Figure 3 and Figure 5As shown, the top of the air inlet cover 13 is located below the air inlet duct 14, and the air outlet is arranged on the top wall of the air inlet cover 13. The air inlet duct 14 is provided with a connecting port 173 corresponding to the air outlet, and the airflow flows upward through the air outlet to the heat dissipation duct and then flows into the air inlet duct 14 through the connecting port 173. Alternatively, in another embodiment, the air inlet cover 13 is arranged higher than the top of the power board 12, and the air inlet cover 13 is higher than the top of the power board 12, and an air outlet is arranged on the rear side wall thereof, and the air inlet duct 14 is arranged on the horizontal side of the air outlet, and the air inlet duct 14 is provided with a connecting port 173 corresponding to the air outlet, and the airflow flows to the top of the air inlet cover 13 and can flow out of the air outlet in a horizontal direction and then flow into the air inlet duct 14 through the connecting port 173. In the heat dissipation path of the food processor, especially at the air inlet to the air duct, there are two turns, including "main machine air inlet-air inlet" and "air inlet-heat dissipation duct", which make the external airflow flow to the power board module more evenly and efficiently, especially to the high-temperature area with strong heat dissipation requirements, thereby improving and enhancing the heat dissipation effect of the power board, and also improving and enhancing the heat dissipation effect of the food processor.

[0077] Furthermore, the top of the motor seat 17 is also provided with an air guide portion 174 that is connected to the motor installation cavity 172 and protrudes outward. The housing 10 is provided with a connecting pipe 18, and the connecting pipe 18 is connected to the air guide portion 174 to form the air outlet duct 15.

[0078] Specifically, the connecting duct 18 and the air guide 174 can be an integral structure, or the connecting duct 18 can be a separate pipe such as a bellows. The bellows is flexible and can be extended and extended in a more flexible direction, which can avoid interference with the surrounding parts in the housing 10 and is convenient to use. The housing 10 is provided with a main unit air outlet 19 at the bottom, and the main unit air outlet 19 is provided on the side wall of the housing 10, such as Figure 3 or Figure 4 As shown, the upper end of the connecting pipe 18 is bent toward the air guide portion 174 to facilitate connection with the air guide portion 174, and the lower end of the connecting pipe 18 is bent toward the main unit air outlet 19, so that the air outlet path forms a zigzag shape, which is beneficial to extend the air outlet path, improve the noise reduction effect, and reduce the noise transmitted from the main unit air outlet 19.

[0079] Furthermore, a mainframe air outlet 19 is disposed at the bottom of the housing 10 , and a buffer cavity is disposed between the air outlet duct 15 and the mainframe air outlet 19 .

[0080] Specifically, the cross-sectional area at the outlet of the air outlet duct 15 is smaller than the cross-sectional area at the inlet of the buffer chamber, so the airflow can flow from the small space into the large space, and the buffer chamber can play a buffering role, which can reduce the propagation of noise and make the noise gradually decay during the propagation process; the buffer chamber can play the role of a muffler, which can disperse the noise source and reduce the intensity of the noise, so that the noise finally transmitted to the outside is effectively reduced, which is conducive to improving the user experience. The main unit air outlet 19 is provided with a plurality of small air outlet holes, for example, and the small holes can be used to further reduce noise to enhance the noise reduction effect.

[0081] As a preferred embodiment of the present application, the main engine air inlet 16 is located below the low temperature zone 121 , and the main engine air inlet 16 and the high temperature zone 122 are staggered in the horizontal direction.

[0082] like Figure 1 As shown, after the airflow flows into the casing 10 through the main unit air inlet 16, part of the airflow can directly dissipate heat in the low-temperature zone 121, thereby improving the heat dissipation efficiency of the low-temperature zone 121. At the same time, the airflow can turn and flow to the high-temperature zone 122 on one side. Since the main unit air inlet 16 and the high-temperature zone 122 are offset in the horizontal direction, it can be avoided that part of the airflow is difficult to enter the heat dissipation duct from the side below the high-temperature zone 122, resulting in low airflow utilization, thereby ensuring the heat dissipation efficiency of the high-temperature zone 122.

[0083] Preferably, the main unit air inlet 16 is convexly arranged, so that there is a certain gap between the main unit air inlet 16 and the table where the machine is placed, which can prevent water from being sucked into the casing 10 when there is water outside the main unit air inlet 16, thereby improving the reliability of use. Furthermore, the main unit air inlet 16 includes a plurality of air inlet holes, which can reduce wind noise, and at the same time prevent dust, mosquitoes, etc. from entering the casing 10 through the main unit air inlet 16 to affect the environmental hygiene in the casing 10, thereby ensuring the performance and life of each component in the casing 10.

[0084] Preferably, the area of ​​the low temperature zone 121 facing the main unit air inlet 16 can be provided with modules that need heat dissipation, so as to optimize the heat dissipation effect of these modules.

[0085] As another preferred embodiment of the present application, Figure 7As shown, the power board 12 includes a low temperature zone 121 and a high temperature zone 122. The power board 12 is placed vertically, and the low temperature zone 121 and the high temperature zone 122 are arranged in sequence in the vertical direction, wherein the low temperature zone 121 is located below the high temperature zone 122, so that the low temperature zone 121 is close to the host air inlet 16. An air inlet cover 13 is provided on the power board 12, and the air inlet cover 13 and the power board 12 are enclosed to form a heat dissipation duct. Preferably, the air inlet cover 13 is provided in the high temperature zone 122. The heat dissipation duct extends and circulates in the horizontal direction, and the air inlet cover 13 is provided on the side wall where the heat dissipation duct extends. After the airflow flows into the casing from the host air inlet 16, it flows into the heat dissipation duct through the air inlet 131, and after turning in the heat dissipation duct, it flows to the air inlet duct through the heat dissipation duct. Preferably, the air inlet cover 13 is further provided with an air outlet 132 , and the air outlet 132 is arranged at the end of the heat dissipation air duct and at a side opposite to the air inlet 131 .

[0086] With such arrangement, after the external airflow enters the casing, part of it flows through the low-temperature zone 121, that is, flows into the heat dissipation duct through the air inlet to efficiently dissipate the high-temperature zone located in the heat dissipation duct. On the premise of ensuring that the low-temperature zone flows through the air flow to achieve basic heat dissipation requirements, the airflow can also flow quickly to the high-temperature zone. At the same time, when flowing to the high-temperature zone, the airflow turns in the heat dissipation duct, so that each area of ​​the high-temperature zone located in the heat dissipation duct has external airflow flowing in, thereby ensuring efficient heat dissipation of the high-temperature zone.

[0087] The air inlet airflow path of the food processing machine is: main machine air inlet→air inlet→heat dissipation air duct→air outlet→air inlet air duct→motor installation cavity→motor air inlet→motor heat dissipation cavity→motor air outlet→motor installation cavity→air outlet air duct→main machine air outlet. After the airflow flows into the casing from the main machine air inlet, it naturally rises and flows through the low temperature area of ​​the power board, and then flows into the heat dissipation air duct through the air inlet, and turns in the heat dissipation air duct, so that the air inlet located on the side wall of the heat dissipation air duct can continuously supplement the external airflow in the flow path of the heat dissipation air duct, so as to realize efficient and balanced heat dissipation of the high temperature area in the heat dissipation air duct.

[0088] Preferably, the power board includes a low-temperature zone and a high-temperature zone, and the low-temperature zone and the high-temperature zone are arranged sequentially in the lateral direction. The air inlet hood is arranged in the high-temperature zone, and the air inlet of the air inlet hood is arranged on the side wall of the heat dissipation air duct in the air inlet hood. The air inlet of the host is arranged below the air inlet hood, and the air inlet of the host is arranged opposite to the air inlet.

[0089] Preferably, the power board is covered with an air inlet cover, which completely covers the power board, and a heat dissipation duct is formed between the power board and the air inlet cover, and the air inlet of the heat dissipation duct is located on the side wall of the flow path of the heat dissipation duct.

[0090] Preferably, the power board can also be set as two independent blocks, including a high-temperature block with a larger heat generation and a low-temperature block with a smaller heat generation. The air inlet cover is arranged on the high-temperature block, and the high-temperature block and the air inlet cover are enclosed to form a heat dissipation duct.

[0091] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A food processor with improved heat dissipation effect, comprising a housing, a grinding cup arranged in the housing, and a motor assembly arranged below the grinding cup, wherein the motor assembly comprises a motor, the motor has a motor heat dissipation cavity, the motor heat dissipation cavity is provided with a motor air inlet and a motor air outlet, and is characterized in that: A vertically placed power board and an air inlet cover arranged on the power board are provided on one side of the motor assembly, the air inlet cover and the power board are enclosed to form a heat dissipation duct, an air inlet duct and an air outlet duct are provided in the casing, the air inlet duct connects the heat dissipation duct and the motor air inlet, the motor air outlet is connected to the air outlet duct, the casing is provided with a main engine air inlet, and the air inlet cover is provided with an air inlet on the side wall extending along the heat dissipation duct, the external airflow flows into the inner cavity of the casing from the main engine air inlet, flows into the heat dissipation duct through the air inlet, and then turns and flows to the air inlet duct through the heat dissipation duct.

2. A food processor with improved heat dissipation effect according to claim 1, characterized in that: The power board includes a low-temperature zone and a high-temperature zone laterally arranged on one side of the low-temperature zone. The heat dissipation duct is arranged in the high-temperature zone. The air inlet faces the low-temperature zone, and the external air flows through the low-temperature zone into the heat dissipation duct of the high-temperature zone.

3. A food processor with improved heat dissipation effect according to claim 2, characterized in that: The host air inlet is arranged at the bottom of the housing and below the low temperature zone. External air flows from the host air inlet to the low temperature zone, and turns from the low temperature zone to flow into the heat dissipation duct of the high temperature zone.

4. A food processor with improved heat dissipation effect according to claim 2, characterized in that: The host air inlet is arranged in the horizontal direction, and the air inlet is arranged in the vertical direction. The host air inlet and the air inlet are arranged substantially vertically.

5. The food processor with improved heat dissipation effect according to claim 1, characterized in that: A plurality of heat sinks are arranged in the heat dissipation duct, a heat dissipation gap is formed between two adjacent heat sinks, and the plurality of heat sinks are arranged along the extension direction of the heat dissipation duct.

6. A food processor with improved heat dissipation effect according to claim 5, characterized in that: The air inlet comprises a plurality of grid holes arranged at intervals, and the grid holes are arranged opposite to or staggered with the corresponding heat dissipation gaps.

7. A food processor with improved heat dissipation effect according to claim 5, characterized in that: The extending direction of the heat dissipation gap is the same as the direction in which the airflow flows into the heat dissipation duct, or the heat dissipation gap is arranged to be inclined toward the extending direction of the heat dissipation duct.

8. The food processor with improved heat dissipation effect according to claim 1, characterized in that: The bottom of the housing is provided with a main engine air outlet, the motor assembly includes a motor seat, the motor is installed on the top of the motor seat, a receiving cavity is provided in the motor seat, and the air outlet duct extends downward from the top of the motor seat and is connected with the main engine air outlet.

9. A food processor with improved heat dissipation effect according to claim 8, characterized in that: The air outlet duct and the air inlet cover are arranged on the same side and spaced apart, and the main engine air inlet is arranged between the air inlet cover and the air outlet duct.

10. The food processor with improved heat dissipation effect according to claim 1, characterized in that: The motor assembly includes a motor base with a motor mounting cavity at the top, the air inlet duct is arranged on the motor base and communicates with the motor mounting cavity, an air outlet is arranged on the top of the air inlet cover to communicate with the air inlet duct through the air outlet, and the air outlet is arranged on the top wall or rear side wall of the air inlet cover; The top of the motor seat is also provided with an air guide portion which is connected with the motor installation cavity and protrudes outwards. A connecting pipe is provided in the housing, and the connecting pipe is connected with the air guide portion to form the air outlet duct.

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