A compact food processor

Abstract

This utility model discloses a compact food processor, including a cup body with a grinding chamber, a brushless motor disposed below the cup body, and a circuit board electrically connected to the brushless motor. The circuit board includes a brushless drive board with an IPM module and an energy storage board with a capacitor module. The brushless drive board and the energy storage board are separately disposed but electrically connected, and are independently disposed outside the brushless motor. The brushless drive board and the energy storage board are smaller than the circuit board, making it easier to install the brushless drive board and the energy storage board in the narrow space of the food processor, improving the flexibility of circuit board installation, improving the space utilization rate inside the food processor, and enhancing the compactness of the whole machine, making the overall size smaller. At the same time, it can avoid the airflow for heat dissipation of the IPM module being blocked when passing through the capacitor module, which would result in poor heat dissipation of the IPM module, thus ensuring the stability of the whole machine operation.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a compact food processing machine. Background Technology

[0002] Existing food processors typically include a cup body with a grinding chamber, a grinding device installed inside the grinding chamber, and a motor that drives the grinding device to rotate. When using the food processor, the user places the ingredients in the grinding chamber, and the motor rotates at high speed, driving the grinding device to rotate and thus processing the ingredients.

[0003] Most existing motors are brushed motors, but these motors generate significant noise and vibration during operation, resulting in a poor user experience. To improve processing results, many manufacturers use brushless motors instead. Brushless motors offer numerous advantages, including longer lifespan, lower vibration, lower noise, and no carbon powder pollution. To control the brushless motor, a drive module is installed within the main unit of the food processing machine. For example, the applicant's earlier patent application CN202322590933.8 discloses a drive module for a brushless motor used in a food processing machine and a food processing machine in general. This paper describes a circuit board with an IPM module and electrolytic capacitors. However, this type of circuit board is quite long. Since current brushless motors have high power ratings, reaching 300-600W, the capacitors used in the circuit board are enormous, especially under low-voltage power supply conditions, where the capacitors can reach φ30mm×30mm. This results in a large overall circuit board size. To accommodate the installation of the circuit board, the entire machine needs to reserve a large installation space, leading to a large overall machine size and a significant amount of internal redundant space. Meanwhile, due to the large size of the capacitor, the airflow inside the host is obstructed when it passes through the capacitor module to dissipate heat from the circuit board, especially the IPM module. This results in low airflow efficiency, poor heat dissipation of the IPM module, affects the stability and lifespan of the food processor, and seriously impacts the user experience. Utility Model Content

[0004] The purpose of this utility model is to provide a compact food processing machine to solve the problem of how to solve the problem of excessively large machine size caused by the large size of the circuit board controlling the brushless motor, and the problem of capacitors blocking the airflow for heat dissipation of the circuit board, under the premise of using brushless motors to reduce noise generation and improve the overall performance.

[0005] To achieve the above objectives, this utility model provides a compact food processing machine, including a cup body with a grinding chamber, a grinding device disposed in the grinding chamber, and a brushless motor disposed below the cup body and drivenly connected to the grinding device. The food processing machine also includes a circuit board electrically connected to the brushless motor. The circuit board includes a brushless drive board with an IPM module and an energy storage board with a capacitor module. The brushless drive board and the energy storage board are separately disposed and electrically connected, and the brushless drive board and the energy storage board are independently disposed outside the brushless motor.

[0006] This application utilizes a brushless motor, leveraging its characteristics to reduce noise during food processing. The brushless motor also features variable frequency control, allowing the food processor to adjust its speed based on different ingredients and processing conditions. This results in better and more thorough processing, improving the texture and flavor of the food. Furthermore, the brushless motor's smaller footprint contributes to a more compact internal structure, reducing the overall space required for storage.

[0007] The food processor also includes a circuit board electrically connected to the brushless motor. This circuit board comprises a brushless drive board with an IPM module and an energy storage board with a capacitor module. The brushless drive board and energy storage board are separate but electrically connected, and each is independently located outside the brushless motor. Compared to existing structures that integrate both the IPM module and capacitor module onto the same circuit board, this design offers several advantages. First, the brushless drive board and energy storage board are smaller than the circuit board itself, making them easier to install within the limited space of the food processor. This increases the flexibility of circuit board installation, improves space utilization, and enhances the overall compactness of the machine. Second, separating the IPM module from the capacitor module prevents airflow obstruction when passing through the capacitor module, which could lead to lower airflow efficiency, poor heat dissipation, and reduced stability and lifespan of the food processor, thus ensuring overall machine stability. Furthermore, it reduces electromagnetic interference, minimizes inter-module interference, improves system stability, and further optimizes the performance of the food processor.

[0008] In a preferred embodiment of a compact food processing machine, a brushless drive board is vertically positioned on one side of a brushless motor, and the brushless motor at least partially overlaps with the brushless drive board in the lateral direction.

[0009] By setting the brushless drive board vertically to one side of the brushless motor, and having the brushless motor at least partially overlap with the brushless drive board in the horizontal direction, the vertical space formed by the brushless motor is effectively utilized, effectively reducing the vertical height of the entire machine. At the same time, the thickness of the brushless drive board is greatly reduced compared to existing circuit boards. After the circuit board is installed on the outside of the brushless motor, its horizontal space occupation can be greatly reduced, further optimizing the overall structural layout and improving space utilization.

[0010] In a preferred embodiment of a compact food processing machine, an energy storage plate is positioned horizontally below a brushless motor, and the energy storage plate at least partially overlaps with the brushless drive plate in the vertical direction.

[0011] By placing the energy storage board horizontally below the brushless motor, and ensuring that the energy storage board at least partially overlaps with the brushless drive board in the vertical direction, the lateral space below the brushless motor is effectively utilized. Furthermore, even after the brushless motor drive board is placed vertically on one side of the brushless motor, there is still redundant space below the brushless motor. The energy storage board can fully utilize this redundant space, reducing the overall lateral dimensions of the device and improving space utilization.

[0012] In a preferred embodiment of a compact food processing machine, the energy storage plate is vertically positioned outside the brushless motor and on the opposite side of the brushless drive plate relative to the brushless motor.

[0013] By vertically placing the energy storage plate outside the brushless motor and on the opposite side of the brushless drive board relative to the brushless motor, the brushless drive board and the energy storage plate form a symmetrical layout, balancing the weight distribution of the entire machine, enhancing stability, and preventing vibration or even tilting during food processing due to excessive weight on one side. On the other hand, it maximizes the distance between the brushless drive board and the energy storage plate, reducing electromagnetic interference, ensuring independent operation of each module, improving system reliability, and further optimizing the performance of the food processor.

[0014] In a preferred embodiment of a compact food processing machine, the food processing machine further includes a housing that accommodates a brushless motor and a circuit board, with a brushless drive board or energy storage board fixed to the housing.

[0015] By fixing the brushless drive board or energy storage board to the housing, the brushless drive board or energy storage board is securely fixed, preventing loosening caused by vibration or movement, ensuring that all components work together, further improving the stability and durability of the whole machine, and extending its service life.

[0016] In a preferred embodiment of a compact food processing machine, the brushless motor includes a motor body and a housing that houses the motor body, with a brushless drive plate or energy storage plate fixed to the housing.

[0017] By including the motor body and the housing that houses the motor body, and fixing the brushless drive board or energy storage board to the housing, the brushless motor and the brushless drive board or energy storage board can be fixed as a whole. This allows the brushless drive board or energy storage board to be fixed simultaneously when the brushless motor is installed into the housing, simplifying the installation process, reducing assembly time, and helping to improve assembly efficiency.

[0018] In a preferred embodiment of a compact food processing machine, the food processing machine further includes a housing that houses the brushless motor and the circuit board. The housing has a heat dissipation channel that communicates with the outside. The brushless drive board is located in the heat dissipation channel, and the energy storage board is separated from the heat dissipation channel.

[0019] By placing the brushless driver board within the heat dissipation channel, cool air entering the channel can pass over the driver board, effectively cooling the board, especially the IPM module. This reduces the IPM module's temperature rise, keeping its operating temperature within a reasonable range and preventing significant temperature increases that could lead to severe aging or even damage. This contributes to extending the IPM module's lifespan. Simultaneously, the energy storage board is separated from the heat dissipation channel, preventing interference with airflow and ensuring smooth airflow for efficient cooling of the driver board.

[0020] In a preferred embodiment of a compact food processing machine, the food processing machine further includes a housing that accommodates a brushless motor and a circuit board. The housing has a heat dissipation channel that communicates with the outside. Both the brushless drive board and the energy storage board are located in the heat dissipation channel. The brushless drive board is located upstream of the energy storage board in the gas flow path within the heat dissipation channel, so that the airflow in the heat dissipation channel passes through the brushless drive board first and then through the energy storage board.

[0021] By placing both the brushless driver board and the energy storage board within the heat dissipation channel, with the brushless driver board positioned upstream of the energy storage board in the gas flow path within the heat dissipation channel, the airflow within the heat dissipation channel first passes through the brushless driver board, carrying away its heat, and then passes through the energy storage board to dissipate heat from the energy storage board. This ensures that the airflow passes through the brushless driver board and the energy storage board sequentially, improving the effective heat dissipation of the main heat-generating component, the IPM module, optimizing the heat dissipation sequence, and enhancing the overall heat dissipation effect.

[0022] In a preferred embodiment of a compact food processing machine, the brushless drive board further includes an EMC module and a rectifier module disposed adjacent to the EMC module. A connection area electrically connected to the energy storage board is provided between the rectifier module and the IPM module.

[0023] By providing a connection area between the rectifier module and the IPM module that is electrically connected to the energy storage board, the electrical energy output by the rectifier module is transmitted to the energy storage board through the connection area, ensuring efficient use of electrical energy. At the same time, it can reduce the modification of the original brushless driver board, reduce the modification cost of the brushless driver board, and help to further reduce production costs.

[0024] In a preferred embodiment of a compact food processing machine, the brushless drive board further includes a heat sink that at least covers the IPM module.

[0025] By including a heat sink in the brushless driver board, and ensuring that the heat sink at least covers the IPM module, the heat generated by the IPM module can be quickly dissipated through the heat sink. This helps improve the heat dissipation efficiency, reduce the temperature rise of the IPM module, and keep the operating temperature of the IPM module within a reasonable range. This effectively avoids the situation where the temperature rise of the IPM module leads to severe aging or even damage, and helps to extend the service life of the IPM module. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the circuit board structure in one embodiment of the present invention.

[0029] List of components and reference numerals:

[0030] 1-Cup body; 2-Pulverizing device; 3-Brushless motor; 4-Brushless drive board; 41-IPM module; 42-Heat sink; 43-EMC module; 44-Rectifier module; 45-Connection area; 5-Energy storage board; 51-Capacitor module. Detailed Implementation

[0031] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0032] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may 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.

[0033] like Figure 1 , Figure 2As shown, this utility model provides a compact food processing machine, including a cup body 1 with a grinding chamber, a grinding device 2 disposed in the grinding chamber, and a brushless motor 3 disposed below the cup body 1 and drivenly connected to the grinding device 2. The food processing machine also includes a circuit board electrically connected to the brushless motor 3. The circuit board includes a brushless drive board 4 with an IPM module 41 and an energy storage board 5 with a capacitor module 51. The brushless drive board 4 and the energy storage board 5 are separately disposed and electrically connected, and the brushless drive board 4 and the energy storage board 5 are independently disposed outside the brushless motor 3.

[0034] This application incorporates a brushless motor 3. Leveraging the characteristics of the brushless motor 3, the noise level during food processing is significantly reduced, achieving noise reduction. Furthermore, the brushless motor 3 is capable of frequency conversion control, allowing the food processor to adjust its output speed according to different ingredients and processing conditions. This results in better and more thorough processing, enhancing the texture and flavor of the food. Additionally, the brushless motor 3 occupies less space, contributing to a more compact internal structure and reducing the overall footprint of the food processor, making it easier for users to store.

[0035] The food processor also includes a circuit board electrically connected to the brushless motor 3. The circuit board includes a brushless drive board 4 with an IPM module 41 and an energy storage board 5 with a capacitor module 51. The brushless drive board 4 and the energy storage board 5 are separately installed and electrically connected. The brushless drive board 4 and the energy storage board 5 are independently installed on the outside of the brushless motor 3. Compared with the existing structure that integrates the IPM module 41 and the capacitor module 51 on the same circuit board, on the one hand, the brushless drive board 4 and the energy storage board 5 are smaller than the circuit board, making it easier to install the brushless drive board 4 and the energy storage board 5 in the small space of the food processor, improving the flexibility of circuit board installation, improving the space utilization rate inside the food processor, and improving the compactness of the whole machine, making the overall size smaller. On the other hand, after the IPM module 41 and the capacitor module 51 are separated, the airflow for cooling the IPM module 41 can be prevented from being blocked when passing through the capacitor module 51, resulting in low airflow efficiency and poor heat dissipation of the IPM module 41, which would affect the stability and service life of the food processor and ensure the stability of the whole machine. It can also reduce electromagnetic interference, reduce mutual influence between modules 41, improve system stability, and further optimize the performance of the food processing machine.

[0036] It should be noted that this application does not specifically limit the location of the brushless driver board 4. As one preferred embodiment of this application, such as... Figure 1 As shown, the brushless drive board 4 is vertically placed on one side of the brushless motor 3, and the brushless motor 3 overlaps with the brushless drive board 4 at least partially in the horizontal direction.

[0037] By setting the brushless drive board 4 vertically to one side of the brushless motor 3, and having the brushless motor 3 at least partially overlap with the brushless drive board 4 in the horizontal direction, the vertical space formed by the brushless motor 3 is effectively utilized, effectively reducing the vertical height of the entire machine. At the same time, the thickness of the brushless drive board 4 is greatly reduced compared to the existing circuit board. After the circuit board is installed on the outside of the brushless motor 3, its horizontal space occupation can be greatly reduced, further optimizing the overall structural layout and improving space utilization.

[0038] It should be further noted that this application does not specifically limit the placement of the energy storage plate 5 in this embodiment, and it can be any of the following configurations:

[0039] Implementation method 1: such as Figure 1 As shown, in this embodiment, the energy storage plate 5 is horizontally positioned below the brushless motor 3, and the energy storage plate 5 overlaps at least partially with the brushless drive plate 4 in the vertical direction.

[0040] By placing the energy storage plate 5 horizontally below the brushless motor 3, and having the energy storage plate 5 at least partially overlap with the brushless drive plate 4 in the vertical direction, the horizontal space below the brushless motor 3 is effectively utilized. Furthermore, after the brushless motor drive plate 4 is placed vertically on one side of the brushless motor 3, there is still redundant space below the brushless motor 3. The energy storage plate 5 can make full use of this redundant space, reduce the overall horizontal dimensions of the machine, and improve space utilization.

[0041] Implementation Method 2: In this implementation method, the energy storage plate 5 is vertically placed outside the brushless motor 3 and is located on the other side of the brushless drive plate 4 opposite to the brushless motor 3.

[0042] By vertically placing the energy storage plate 5 outside the brushless motor 3 and on the opposite side of the brushless drive plate 4 relative to the brushless motor 3, on the one hand, the brushless drive plate 4 and the energy storage plate 5 form a symmetrical layout, which balances the weight distribution of the whole machine, enhances stability, and avoids vibration or even tilting during food processing due to excessive weight on one side; on the other hand, it maximizes the distance between the brushless drive plate 4 and the energy storage plate 5, reduces electromagnetic interference, ensures that each module 41 operates independently, improves system reliability, and further optimizes the performance of the food processor.

[0043] It should be noted that this application does not specifically limit the fixing method of the brushless driver board 4 and the energy storage board 5, which can be any one of the following embodiments:

[0044] Example 1: In this example, the food processing machine also includes a housing that accommodates the brushless motor 3 and the circuit board. The brushless drive board 4 or the energy storage board 5 is fixed on the housing. More preferably, both the brushless drive board 4 and the energy storage board 5 are fixed on the housing.

[0045] By fixing the brushless drive board 4 or energy storage board 5 to the housing, the brushless drive board 4 or energy storage board 5 is securely fixed, preventing loosening of the brushless drive board 4 or energy storage board 5 due to vibration or movement, ensuring that all components work together, further improving the stability and durability of the whole machine, and extending its service life.

[0046] Example 2: In this example, the brushless motor 3 includes a motor body and a housing that houses the motor body. The brushless drive board 4 or the energy storage board 5 is fixed on the housing. Both the brushless drive board 4 and the energy storage board 5 are fixed on the housing.

[0047] By fixing the brushless motor 3, which includes the motor body and the housing that houses the motor body, and fixing the brushless drive board 4 or the energy storage board 5 to the housing, the brushless motor 3 and the brushless drive board 4 or the energy storage board 5 can be fixed as a whole. This allows the brushless drive board 4 or the energy storage board 5 to be fixed simultaneously when the brushless motor 3 is installed into the housing, simplifying the installation process, reducing assembly time, and helping to improve assembly efficiency.

[0048] In a preferred embodiment of this application, the food processing machine further includes a housing accommodating the brushless motor 3 and the circuit board, with a heat dissipation channel communicating with the outside. It should be noted that this application does not specifically limit the placement of the brushless drive board 4 and the energy storage board 5 in this embodiment; they can be any of the following embodiments:

[0049] Example 1: In this example, the brushless drive board 4 is located inside the heat dissipation channel, and the energy storage board 5 is set separately from the heat dissipation channel.

[0050] By placing the brushless driver board 4 within the heat dissipation channel, cool air entering the channel can pass through it, effectively dissipating heat from the driver board 4, particularly the IPM module 41. This reduces the temperature rise of the IPM module 41, keeping its operating temperature within a reasonable range and preventing significant temperature increases that could lead to severe aging or even damage. This helps extend the lifespan of the IPM module 41. Simultaneously, the energy storage board 5 is separated from the heat dissipation channel, effectively preventing interference with airflow and ensuring smooth airflow for efficient heat dissipation of the driver board 4.

[0051] Example 2: In this example, both the brushless drive board 4 and the energy storage board 5 are located in the heat dissipation channel, and the brushless drive board 4 is located upstream of the energy storage board 5 in the gas flow path within the heat dissipation channel, so that the airflow in the heat dissipation channel passes through the brushless drive board 4 first and then passes through the energy storage board 5.

[0052] By placing both the brushless drive board 4 and the energy storage board 5 within the heat dissipation channel, and positioning the brushless drive board 4 upstream of the energy storage board 5 in the gas flow path within the heat dissipation channel, the airflow within the heat dissipation channel first passes through the brushless drive board 4, carrying away its heat, and then passes through the energy storage board 5 to dissipate heat from the energy storage board 5. This ensures that the airflow passes through the brushless drive board 4 and the energy storage board 5 in sequence, thereby improving the effective heat dissipation of the main heat-generating component, the IPM module 41, optimizing the heat dissipation sequence, and enhancing the overall heat dissipation effect.

[0053] As a preferred embodiment of this application, such as Figure 2 As shown, the brushless driver board 4 also includes an EMC module 41 and a rectifier module 44 disposed adjacent to the EMC module 41. A connection area 45 electrically connected to the energy storage board 5 is provided between the rectifier module 44 and the IPM module 41.

[0054] By providing a connection area 45 between the rectifier module 44 and the IPM module 41, which is electrically connected to the energy storage board 5, the electrical energy output by the rectifier module 44 is transmitted to the energy storage board 5 through the connection area 45, ensuring efficient use of electrical energy. At the same time, it can reduce the modification of the original brushless drive board 4, reduce the modification cost of the brushless drive board 4, and help to further reduce production costs.

[0055] As a preferred embodiment of this application, such as Figure 2 As shown, the brushless driver board 4 also includes a heat sink 42, which at least covers the IPM module 41.

[0056] By including a heat sink 42 in the brushless driver board 4, and with the heat sink 42 covering at least the IPM module 41, the heat generated by the IPM module 41 can be quickly dissipated to the outside through the heat sink 42, which helps to improve its heat dissipation efficiency, reduce the temperature rise of the IPM module 41, keep the operating environment temperature of the IPM module 41 within a reasonable range, effectively avoid the situation where the temperature rise of the IPM module 41 is significant, leading to severe aging or even damage, and help to extend the service life of the IPM module 41.

[0057] The technical solutions protected by this utility model are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all 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 compact food processing machine, comprising a cup body with a grinding chamber, a grinding device disposed within the grinding chamber, and a brushless motor disposed below the cup body and drivenly connected to the grinding device, characterized in that, The food processing machine also includes a circuit board electrically connected to the brushless motor. The circuit board includes a brushless drive board with an IPM module and an energy storage board with a capacitor module. The brushless drive board and the energy storage board are separately arranged and electrically connected, and the brushless drive board and the energy storage board are independently arranged on the outside of the brushless motor.

2. A compact food processor as claimed in claim 1, wherein, The brushless drive board is placed vertically on one side of the brushless motor, and the brushless motor overlaps with the brushless drive board at least partially in the horizontal direction.

3. A compact food processor as claimed in claim 2, wherein The energy storage plate is placed horizontally below the brushless motor, and the energy storage plate is at least partially overlapped with the brushless drive plate in the vertical direction.

4. A compact food processor as claimed in claim 2, wherein, The energy storage plate is vertically positioned outside the brushless motor and is located on the opposite side of the brushless drive plate relative to the brushless motor.

5. A compact food processor as claimed in claim 1, wherein, The food processing machine also includes a housing that accommodates the brushless motor and the circuit board, with the brushless drive board or the energy storage board fixed to the housing.

6. A compact food processor as claimed in claim 1, wherein, The brushless motor includes a motor body and a housing that accommodates the motor body, and the brushless drive board or the energy storage board is fixed on the housing.

7. A compact food processing machine according to claim 1, characterized in that, The food processing machine also includes a housing that accommodates the brushless motor and the circuit board. The housing has a heat dissipation channel that communicates with the outside. The brushless drive board is located in the heat dissipation channel, and the energy storage board is separated from the heat dissipation channel.

8. A compact food processor as claimed in claim 1, wherein, The food processing machine also includes a housing that accommodates the brushless motor and the circuit board. The housing has a heat dissipation channel that communicates with the outside. The brushless drive board and the energy storage board are both located in the heat dissipation channel. The brushless drive board is located upstream of the energy storage board in the gas flow path of the heat dissipation channel, so that the airflow in the heat dissipation channel passes through the brushless drive board first and then through the energy storage board.

9. A compact food processor as claimed in claim 1, wherein, The brushless driver board also includes an EMC module and a rectifier module disposed adjacent to the EMC module. A connection area electrically connected to the energy storage board is provided between the rectifier module and the IPM module.

10. A compact food processor as claimed in claim 1, characterised in that, The brushless driver board also includes a heat sink, which at least covers the IPM module.

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