Food processor

Abstract

The utility model discloses a food processor, a driving module comprises a plate body, parts on the plate body are cooled by a cooling medium flowing through the plate body along the long edge direction of the plate body, and the plate body comprises a first plate part, a second plate part and a third plate part which are sequentially connected along the long edge direction. Wherein the first plate part is provided with a switching power supply module, and the switching power supply module is electrically connected with a power supply; the second plate part is provided with a control module, the switching power supply module is electrically connected with the control module, and current flowing out of the switching power supply module flows into the control module; the third plate part is provided with an IPM module, the IPM module is electrically connected with the power supply and used for being connected with the brushless motor, the switching power supply module is electrically connected with the IPM module to supply power to the IPM module, and the IPM module is in communication connection with the control module, so that the driving module has a good heat dissipation effect, the reliability of the driving module is improved, and the reliability of the food processor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, and in particular to a drive module of a brushless motor applied to a food processor and the food processor. Background Art

[0002] Existing food processors usually include a housing, a brushless motor, and a drive module that controls the brushless motor. Since the drive module is connected to the brushless motor and the power supply, and has a heating drive module, a lot of heat will be generated during use. If the heat is not dissipated in time during operation, the drive module will be damaged by heat, shortening the service life of the food processor. In order to improve the heat dissipation effect of the drive module, for example, Chinese utility model patent CN219629476U discloses a food processor with good heat dissipation effect. The food processor includes a machine body, a cup body provided on the machine body and having a grinding chamber, a grinding device provided in the grinding chamber, a motor provided at the bottom of the cup body and transmission-connected to the grinding device, and a control unit provided on the side relative to the motor. The food processor also includes a heat dissipation channel and a fan driven by the rotating shaft of the motor. By configuring the heat dissipation channel to include a first air duct located at the control unit and a second air duct connected to the first air duct and located at the motor, the airflow can not only dissipate the heat of the motor in the second air duct, but also dissipate the heat of the control unit in the first air duct. The first air duct has a main machine air inlet, and the second air duct has a main machine air outlet, so that the airflow passes through the control unit and then is discharged after passing through the motor, so that the airflow passes through the motor for heat dissipation after passing through the control unit with a relatively low temperature for heat dissipation, which helps to improve the heat dissipation efficiency.

[0003] However, the above scheme can only achieve the heat dissipation of the driving module. During the use of the food processor, since each module in the driving module has different heat dissipation requirements and different operating temperatures, the heat dissipation effect of the driving module is not good, which affects the normal operation of the driving module, thereby shortening the service life of the food processor or affecting the working reliability of the food processor. Utility Model Content

[0004] The purpose of the present application is to provide a brushless motor drive module for a food processor and a food processor, so as to solve the problem of poor heat dissipation effect of the brushless motor drive module in the existing food processor.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a drive module for a brushless motor used in a food processing machine, the drive module includes a plate body, the components on the plate body are cooled by a cooling medium flowing through the plate body along the long side direction of the plate body, and the plate body includes a first plate part, a second plate part and a third plate part connected in sequence along the long side direction. Among them, the first plate part is provided with a switching power supply module, the switching power supply module is electrically connected to the power supply and used to convert voltage; the second plate part is provided with a control module, the switching power supply module is electrically connected to the control module, and the current flowing out of the switching power supply module flows into the control module; the third plate part is provided with an IPM module, the IPM module is electrically connected to the power supply and used to connect the brushless motor, the IPM module is used to convert DC current into three-phase current for the brushless motor, the switching power supply module is electrically connected to the IPM module to supply power to the IPM module, and the IPM module is connected to the control module for communication.

[0006] The present application divides a plate body into a first plate portion, a second plate portion, and a third plate portion which are sequentially connected along a long side direction, and a cooling medium sequentially cools the plate body along the long side direction of the plate body, that is, sequentially dissipates heat from the first plate portion, the second plate portion, and the third plate portion, thereby reducing the risk that the third plate portion transfers heat to the second plate portion and the first plate portion through the cooling medium, thereby affecting the second plate portion and the first plate portion, and also reduces the risk that the second plate portion transfers heat to the first plate portion through the cooling medium, thereby affecting the first plate portion, so that the drive module has a better heat dissipation effect, improves the reliability of the drive module, and thus improves the reliability of the food processor.

[0007] In a preferred implementation of a brushless motor drive module for a food processor, the first plate portion has a first operating temperature T1, the second plate portion has a second operating temperature T2, and the third plate portion has a third operating temperature T3, satisfying: T1<T2<T3.

[0008] In the present application, the first working temperature T1 of the first plate portion, the second working temperature T2 of the second plate portion and the third working temperature T3 of the third plate portion increase sequentially. When the drive module dissipates heat, the cooling medium also passes through the first plate portion, the second plate portion and the third plate portion sequentially, that is, the cooling medium dissipates heat from a lower temperature to a higher temperature, thereby reducing the risk that after the cooling medium dissipates heat to a higher temperature portion, the temperature of the cooling medium increases, thereby affecting the heat dissipation to a lower temperature portion. This enables the drive module to have a better heat dissipation effect, improves the reliability of the drive module, and thus improves the reliability of the food processor.

[0009] In a preferred implementation of a drive module for a brushless motor of a food processing machine, the switching power supply module, the control module and the IPM module are arranged at the same end of the plate in the short side direction.

[0010] The present application arranges the switching power supply module, the control module and the IPM module at the same end of the board in the short side direction, so that after the switching power supply module converts the voltage of the current, it is easier to transmit the current after the conversion voltage to the control module and the IPM module, shortening the current transmission distance and making the module layout of the drive module more reasonable.

[0011] In a preferred implementation of a drive module for a brushless motor used in a food processing machine, the first board portion also includes an EMI module, and the EMI module and the switching power supply module are respectively arranged at both ends of the first board portion in the short side direction, and the EMI module is respectively electrically connected to the power supply, the switching power supply module and the IPM module, and the current flowing out of the power supply flows to the IPM module and the switching power supply module respectively after passing through the EMI module, and the EMI module is used to eliminate current interference.

[0012] The present application arranges the switching power supply module and the EMI module at the same end of the board in the long side direction and arranges them opposite to each other in the short side direction, that is, the EMI module and the switching power supply module are arranged adjacent to each other, which facilitates the wiring of the wires electrically connected to the EMI module and the switching power supply module. At the same time, the operating temperatures of the EMI module and the switching power supply module are low and similar. The EMI module and the switching power supply module are both arranged on the first board portion, which facilitates the simultaneous heat dissipation of the two, thereby improving the heat dissipation effect of the driving module.

[0013] In a preferred implementation of a drive module for a brushless motor used in a food processing machine, the second plate portion further includes an electrolytic capacitor, which is disposed on the second plate portion and adjacent to the control module in the short side direction, and the electrolytic capacitor is electrically connected to the IPM module. The third plate portion further includes an electric bridge, which is disposed on the third plate portion and adjacent to the IPM module in the short side direction, and the electric bridge is electrically connected to the EMI module and the electrolytic capacitor, respectively. The current flowing out of the EMI module flows to the electrolytic capacitor through the electric bridge, and then flows to the IPM module. The electrolytic capacitor is used to store current, and the electric bridge is used to convert AC current into DC current and transmit it to the electrolytic capacitor.

[0014] The present application sets the electrolytic capacitor on the second plate portion and sets it adjacent to the control module in the short side direction, that is, sets the electrolytic capacitor adjacent to the IPM module in the short side direction, so that the electrolytic capacitor can increase the current for the IPM module, shorten the stroke of the electrical connection between the electrolytic capacitor and the IPM module, and improve the response speed of the drive module to increase the current for the brushless motor. At the same time, the bridge is set on the third plate portion and is adjacent to the IPM module in the short side direction, that is, the bridge is adjacent to the electrolytic capacitor in the long side direction, so that the bridge can transmit current to the electrolytic capacitor and shorten the stroke of the electrical connection between the electrolytic capacitor and the bridge. At the same time, the working temperatures of the electrolytic capacitor and the control module are similar, and the working temperatures of the bridge and the IPM module are similar. The electrolytic capacitor is set on the second plate portion, and the bridge is set on the third plate portion, which improves the heat dissipation effect of the drive module.

[0015] In a preferred implementation of a drive module for a brushless motor used in a food processing machine, the second board portion also includes a pre-charging module, the pre-charging module is arranged on the second board portion, the electrolytic capacitor is located between the pre-charging module and the control module, the pre-charging module is electrically connected to the EMI module and the bridge respectively, and the current flowing out of the EMI module flows to the bridge through the pre-charging module.

[0016] The present application arranges the pre-charging module adjacent to the electrolytic capacitor in the short side direction, that is, arranges the pre-charging module adjacent to the bridge in the long side direction, so as to facilitate the electrical connection between the pre-charging module and the bridge, and shorten the travel of the pre-charging module to be electrically connected to the EMI module and the bridge respectively. At the same time, the operating temperatures of the pre-charging module, the electrolytic capacitor and the control module are similar, and the pre-charging module is arranged on the second plate portion, and heat is dissipated simultaneously with the electrolytic capacitor and the control module, thereby improving the heat dissipation effect of the driving module.

[0017] In a preferred implementation of a drive module for a brushless motor used in a food processing machine, the third plate portion also includes a heating drive module, the heating drive module is arranged on the third plate portion, the electric bridge is located between the heating drive module and the IPM module, the heating drive module is electrically connected to the EMI module, and the heating drive module is communicatively connected to the control module.

[0018] The present application sets the heating drive module on the third plate portion, and the operating temperature of the heating drive module is similar to the operating temperature of the electric bridge and the IPM module, so that the heating drive module, the electric bridge and the IPM module can dissipate heat at the same time, thereby improving the heat dissipation effect of the drive module.

[0019] In a preferred implementation of a drive module for a brushless motor applied to a food processing machine, in the long side direction, the components on the first plate portion are all located at the same position, and / or the components on the second plate portion are all located at the same position, and / or the components on the third plate portion are all located at the same position.

[0020] The present application arranges the components of the first plate portion at the same position in the long side direction, and / or arranges the components of the second plate portion at the same position in the long side direction, and / or arranges the components of the third plate portion at the same position in the long side direction, so that during the heat dissipation process of the driving module, the cooling medium can simultaneously dissipate the heat for the components on the first plate portion, and / or the cooling medium can simultaneously dissipate the heat for the components on the second plate portion, and / or the cooling medium can simultaneously dissipate the heat for the components on the second plate portion, thereby improving the consistency of heat dissipation of the components on the first plate portion, the consistency of heat dissipation of the components on the second plate portion, and the consistency of heat dissipation of the components on the third plate portion, and improving the heat dissipation effect of the driving module.

[0021] The utility model also provides a food processing machine, comprising a housing, a brushless motor and a drive module of the brushless motor applied to the food processing machine according to the above embodiment. The housing has a receiving cavity and an air inlet and an air outlet connected to the receiving cavity. The brushless motor is arranged in the receiving cavity, and the brushless motor has a first heat dissipation channel. The drive module is arranged in the receiving cavity. The cooling medium passes through the first plate portion, the second plate portion and the third plate portion of the plate body in sequence. .

[0022] The present application connects the air inlet, the plate body, the first heat dissipation channel and the air outlet so that the food processor can dissipate heat for the brushless motor and the drive module at the same time. At the same time, the air inlet is connected with the plate body, the first heat dissipation channel and the air outlet in sequence, so that the heat dissipation medium passes through the drive module first and then passes through the brushless motor, thereby reducing the influence of the heating temperature of the brushless motor on the drive module and improving the heat dissipation effect on the drive module.

[0023] In a preferred implementation of a brushless motor drive module for a food processor, the food processor further includes a radiator having a second heat dissipation channel extending along a long side direction, the second heat dissipation channel being connected to the first air inlet and the first heat dissipation channel respectively;

[0024] The third plate portion is provided with an IPM module, an electric bridge and a heating driving module in sequence along the short side direction, and the heat sink is arranged on the third plate portion and covers the IPM module, the electric bridge and the heating driving module.

[0025] The present application dissipates heat for the IPM module, the bridge and the heating drive module through a radiator, thereby improving the heat dissipation effect of the drive module and further improving the reliability of the drive module.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the layout of a plate body in one embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of module connection in one embodiment of the utility model;

[0030] Figure 3 An exploded view of a food processing machine in one embodiment of the utility model;

[0031] Figure 4 It is a cross-sectional view of a food processing machine in one embodiment of the utility model.

[0032] Description of reference numerals:

[0033] 1-driving module; 2-board body; 10-first board part; 11-switching power supply module; 12-EMI module; 20-second board part; 21-control module; 22-electrolytic capacitor; 23-pre-charging module; 30-third board part; 31-IPM module; 32-bridge; 33-heating driving module; 100-food processor; 110-housing; 111-air inlet; 112-air outlet; 113-accommodating chamber; 120-brushless motor; 121-first heat dissipation channel; 130-heat sink; 131-second heat dissipation channel; X-long side direction; Y-short side direction. DETAILED DESCRIPTION

[0034] 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.

[0035] It should be noted that many specific details are elaborated 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 implementation methods disclosed below.

[0036] Reference Figure 1 to Figure 2 It should be noted that Figure 2The electrolytic capacitor 22 and the pre-charging module 23 are omitted. The utility model provides a driving module 1 for a brushless motor 120 applied to a food processing machine 100, the driving module 1 comprises a plate body 2, the components on the plate body 2 are cooled by a cooling medium flowing through the plate body 2 along the long side direction X of the plate body 2, and the plate body 2 comprises a first plate portion 10, a second plate portion 20 and a third plate portion 30 connected in sequence along the long side direction X. Among them, the first board part 10 is provided with a switching power supply module 11, which is electrically connected to the power supply and used to convert voltage; the second board part 20 is provided with a control module 21, the switching power supply module 11 is electrically connected to the control module 21, and the current flowing out of the switching power supply module 11 flows into the control module 21; the third board part 30 is provided with an IPM module 31, the IPM module 31 is electrically connected to the power supply and used to connect the brushless motor 120, the IPM module 31 is used to convert DC current into three-phase current for the brushless motor 120, the switching power supply module 11 is electrically connected to the IPM module 31 to power the IPM module 31, and the IPM module 31 is communicatively connected to the control module 21.

[0037] It should be noted that the plate body 2 may be a circuit board, and the material may be ceramic, alumina ceramic, aluminum nitride ceramic, thick copper, etc.

[0038] It should be noted that the IPM module 31 (Intelligent Power Module, Chinese name is intelligent power module) can convert the DC current of the driving module 1 into a three-phase motor to adapt to the current demand of the brushless motor 120.

[0039] It should be noted that the control module 21 may be an MCU (Microcontroller Unit, whose Chinese name is micro-control unit), which is used to control some modules on the driving module 1 so that the driving module 1 can work better.

[0040] It should be noted that the board body 2 may be provided with wires, and the driving module 1 realizes electrical connection of various modules through the wires.

[0041] It should be noted that the long side direction X can be represented by the direction indicated by the letter X in the figure. The plate body 2 can be a rectangular plate or a non-rectangular plate, and the sides in the long side direction X and the sides in the short side direction Y can be linear or non-linear. In addition, for a non-rectangular plate, the long side direction X refers to the long axis direction of the plate body 2, and the short side direction Y refers to the short axis direction of the plate body 2.

[0042] It should be noted that the cooling medium may be cold air for heat dissipation.

[0043] It should be noted that the required working temperatures of the components on the first plate portion 10, the components on the second plate portion 20 and the components on the third plate portion 30 increase successively. Therefore, the first plate portion 10, the second plate portion 20 and the third plate portion 30 are arranged successively along the long side direction X, so that the cooling medium dissipates heat to the first plate portion 10, the second plate portion 20 and the third plate portion 30 successively along the long side direction X, thereby reducing the risk that the high-temperature cooling medium cannot effectively dissipate heat to the low-temperature plate portion after dissipating heat to the high-temperature plate portion.

[0044] The present application divides the plate body 2 into a first plate portion 10, a second plate portion 20 and a third plate portion 30 which are sequentially connected along the long side direction X, and at the same time, a cooling medium sequentially cools the plate body 2 along the long side direction X of the plate body 2, that is, sequentially dissipates heat from the first plate portion 10, the second plate portion 20 and the third plate portion 30, thereby reducing the risk that the temperature of the cooling medium rises after first passing through the third plate portion 30 and the high-temperature cooling medium cannot effectively dissipate heat from the second plate portion 20 and the first plate portion 10, and also reduces the risk that the temperature of the cooling medium rises after first passing through the second plate portion 20 and the high-temperature cooling medium cannot effectively dissipate heat from the first plate portion 10. The cooling medium sequentially dissipates heat from the first plate portion 10, the second plate portion 20 and the third plate portion 30, so that the driving module 1 has a better heat dissipation effect, improves the reliability of the driving module 1, and thereby improves the reliability of the food processor 100.

[0045] Reference Figure 1 to Figure 2 In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processor 100, the first plate 10 has a first operating temperature T1, the second plate 20 has a second operating temperature T2, and the third plate 30 has a third operating temperature T3, satisfying: T1<T2<T3.

[0046] It should be noted that the switching power supply module 11 includes a high-frequency switch, which will generate heat and the temperature rise range is less than 30K, and other components of the switching power supply module 11, such as switching power supply chips, transformers, etc., have an optimal operating temperature of less than 65°C. Therefore, the switching power supply module 11 is set on the first plate part 10, and the operating temperature T1 of the first plate part 10 satisfies: T1<15K.

[0047] It should be noted that the control module 21 is mainly composed of a control chip and peripheral circuits. The required operating temperature needs to be lower than 85°C, and the control module 21 needs to be controlled within 45K. Therefore, the control module 21 is arranged on the second plate portion 20. At the same time, in order to reduce the heat generated by other components on the second plate portion 20 and affect the control module 21, the operating temperature of the second plate portion 20 has a margin of 15K, and the operating temperature is controlled within 70°C. The operating temperature T2 of the second plate portion 20 satisfies: 15K<T2<30K.

[0048] It should be noted that the IPM module 31 is a large current control device, and its own temperature rise is relatively high, and the temperature rise of the IPM module 31 is above 45K. Therefore, the IPM module 31 is set on the third plate part 30, and the operating temperature T3 of the third plate part 30 satisfies: T3>30K.

[0049] In the present application, the first working temperature T1 of the first plate portion 10, the second working temperature T2 of the second plate portion 20 and the third working temperature T3 of the third plate portion 30 increase sequentially. When the drive module 1 dissipates heat, the cooling medium also passes through the first plate portion 10, the second plate portion 20 and the third plate portion 30 in sequence, that is, the cooling medium dissipates heat from the area with lower working temperature to the area with higher working temperature, thereby reducing the risk that the temperature of the cooling medium rises after the cooling medium dissipates heat to the parts with higher working temperature, thereby affecting the heat dissipation to the parts with lower working temperature. This enables the drive module 1 to have a better heat dissipation effect, improves the reliability of the drive module 1, and thus improves the reliability of the food processor 100.

[0050] Reference Figure 1 to Figure 2 In a preferred implementation of the driving module 1 of the brushless motor 120 applied to the food processor 100 , the switching power module 11 , the control module 21 and the IPM module 31 are arranged at the same end of the plate body 2 in the short side direction Y.

[0051] It should be noted that the switch power module 11 is electrically connected to the power supply, converting the 220V current flowing out of the power supply into 5V and 15V currents, and the switch power module 11 is electrically connected to the control module 21 and the IPM module 31, respectively, for supplying power to the control module 21 and the IPM module 31. The switch power module 11 converts the 220V voltage into a 5V voltage to supply power to the control module 21. The switch power module 11 converts the 220V voltage into a 15V voltage to supply power to the IPM module 31. The switch power module 11, the control module 21, and the IPM module 31 are arranged at the same end of the board 2 in the short side direction Y, so that the switch power module 11 can supply power to the control module 21 and the IPM module 31, respectively.

[0052] It should be noted that the short side direction Y can be represented by the direction indicated by the letter Y in the figure.

[0053] The present application arranges the switching power module 11, the control module 21 and the IPM module 31 at the same end of the board 2 in the short side direction Y, so that after the switching power module 11 converts the voltage of the current, it is easier to transmit the converted voltage to the control module 21 and the IPM module 31, shortening the current transmission distance and making the module layout of the driving module 1 more reasonable.

[0054] Reference Figure 1 to Figure 2In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processing machine 100, the first board portion 10 further includes an EMI module 12, and the EMI module 12 and the switching power supply module 11 are respectively arranged at both ends of the first board portion 10 in the short side direction Y, and the EMI module 12 is respectively electrically connected to the power supply, the switching power supply module 11 and the IPM module 31, and the current flowing out of the power supply flows to the IPM module 31 and the switching power supply module 11 respectively after passing through the EMI module 12, and the EMI module 12 is used to eliminate the interference of the current.

[0055] It should be noted that the EMI module 12 (Electro Magnetic Interface, Chinese name is electromagnetic compatibility module) can have an electrical energy connection terminal for connecting a power supply to introduce the current of the power supply into the driving module 1, wherein the EMI module 12 has a filtering function, which can reduce the interference of the current flowing into the power supply to the driving module 1, and can also reduce the interference of the driving module 1 to the power supply.

[0056] It should be noted that the EMI module 12 is composed of capacitors and common-mode inductors. The capacitors absorb peak voltages and the common-mode inductors have extremely low resistance (less than 50 mΩ). Therefore, the heat generated by the EMI module 12 is very low. At the same time, the common-mode suppression capability of the common-mode inductors is related to the temperature rise. For every 10K increase in temperature, the common-mode interference suppression capability decreases by 10%. Therefore, the EMI module 12 is set on the first board portion 10.

[0057] It should be noted that the EMI module 12 and the switching power supply module 11 are respectively arranged at the two ends of the first board portion 10 in the short side direction Y, that is, in the short side direction Y, the EMI module 12 and the switching power supply module 11 are adjacent to each other, which shortens the current transmission distance and makes the module layout of the driving module 1 more reasonable.

[0058] The present application arranges the switching power supply module 11 and the EMI module 12 at the same end of the board body 2 in the long side direction X, and arranges them relatively to each other in the short side direction Y, that is, the EMI module 12 and the switching power supply module 11 are arranged adjacent to each other, which facilitates the wiring of the wires electrically connected to the EMI module 12 and the switching power supply module 11. At the same time, the operating temperatures of the EMI module 12 and the switching power supply module 11 are relatively low and similar. The EMI module 12 and the switching power supply module 11 are both arranged on the first board portion 10, which facilitates the simultaneous heat dissipation of the two, thereby improving the heat dissipation effect of the driving module 1.

[0059] Reference Figure 1 to Figure 2. In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processing machine 100, the second plate portion 20 also includes an electrolytic capacitor 22, which is arranged on the second plate portion 20 and adjacent to the control module 21 in the short side direction Y, and the electrolytic capacitor 22 is electrically connected to the IPM module 31. The third plate portion 30 also includes a bridge 32, which is arranged on the third plate portion 30 and adjacent to the IPM module 31 in the short side direction Y, and the bridge 32 is electrically connected to the EMI module 12 and the electrolytic capacitor 22, respectively. The current flowing out of the EMI module 12 flows to the electrolytic capacitor 22 through the bridge 32, and then flows to the IPM module 31. The electrolytic capacitor 22 is used to store current, and the bridge 32 is used to convert AC current into DC current and transmit it to the electrolytic capacitor 22.

[0060] It should be noted that the electrolytic capacitor 22 is the same as the general electrolytic capacitor 22. Generally, the life of the electrolytic capacitor 22 can be maximized when used at a temperature within 70°C. After exceeding 70°C, the life of the electrolytic capacitor 22 will be affected, so the temperature rise is allowed to be within 45K, and therefore the electrolytic capacitor 22 is set on the second plate portion 20.

[0061] It should be noted that the electrolytic capacitor 22 is arranged on the second plate portion 20 and is adjacent to the control module 21 in the short side direction Y, that is, in the short side direction Y, the electrolytic capacitor 22 is arranged between the EMI module 12 and the IPM module 31, and the electrolytic capacitor 22 is electrically connected to the IPM module 31 and the bridge 32. The current of the bridge 32 flows to the IPM module 31 through the electrolytic capacitor 22, shortening the current transmission distance, so that the module layout of the driving module 1 is more reasonable.

[0062] It should be noted that the bridge 32 is a large current control device, so the bridge 32 is set on the third plate portion 30. At the same time, the bridge 32 and the IPM module 31 are adjacently arranged in the short side direction Y, so that in the long side direction X, the bridge 32 and the electrolytic capacitor 22 are located at the same position, shortening the current transmission stroke, making the module layout of the driving module 1 more reasonable.

[0063] In the present application, the electrolytic capacitor 22 is arranged on the second plate portion 20 and is adjacent to the control module 21 in the short side direction Y, that is, the electrolytic capacitor 22 is arranged adjacent to the IPM module 31 in the short side direction Y, so that the electrolytic capacitor 22 can increase the current for the IPM module 31, shorten the stroke of the electrical connection between the electrolytic capacitor 22 and the IPM module 31, and improve the response speed of the drive module 1 to increase the current for the brushless motor 120. At the same time, the bridge 32 is arranged on the third plate portion 30 and is adjacent to the IPM module 31 in the short side direction Y, that is, the bridge 32 is adjacent to the electrolytic capacitor 22 in the long side direction X, so that the bridge 32 can transmit current to the electrolytic capacitor 22, and shorten the stroke of the electrical connection between the electrolytic capacitor 22 and the bridge 32. At the same time, the operating temperatures of the electrolytic capacitor 22 and the control module 21 are similar, and the operating temperatures of the bridge 32 and the IPM module 31 are similar. The electrolytic capacitor 22 is arranged on the second plate portion 20, and the bridge 32 is arranged on the third plate portion 30, which improves the heat dissipation effect of the driving module 1.

[0064] Reference Figure 1 to Figure 2 In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processor 100, the second plate portion 20 further includes a pre-charging module 23, the pre-charging module 23 is arranged on the second plate portion 20, the electrolytic capacitor 22 is located between the pre-charging module 23 and the control module 21, the pre-charging module 23 is electrically connected to the EMI module 12 and the bridge 32 respectively, and the current flowing out of the EMI module 12 flows to the bridge 32 through the pre-charging module 23.

[0065] It should be noted that the function of the pre-charging module 23 is to pre-charge the electrolytic capacitor 22 when the electrolytic capacitor 22 is initially powered on. Since the electrolytic capacitor 22 is directly charged without current, the instantaneous excessive charging current can easily damage the electrolytic capacitor 22, so the pre-charging module 23 is used for charging.

[0066] It should be noted that the driver module 1 will limit the current within a safe range during the pre-charging stage, which may easily cause the pre-charging module 23 to heat up. Since the pre-charging time is short, the temperature rise of the pre-charging module 23 is generally within 20K. In order to facilitate the electrical connection between the pre-charging module 23, the EMI module 12 and the electrolytic capacitor 22, the pre-charging module 23 is arranged on the second plate portion 20.

[0067] It should be noted that the electrolytic capacitor 22 is located between the pre-charging module 23 and the control module 21. The pre-charging module 23 is electrically connected to the EMI module 12 and the bridge 32 respectively, so that the pre-charging module 23 is electrically connected to the EMI module 12 and the bridge 32 at the same time, shortening the current transmission distance and making the module layout of the driving module 1 more reasonable.

[0068] The present application arranges the pre-charging module 23 adjacent to the electrolytic capacitor 22 in the short side direction Y, that is, arranges the pre-charging module 23 adjacent to the bridge 32 in the long side direction X, so as to facilitate the electrical connection between the pre-charging module 23 and the bridge 32, and shorten the travel of the pre-charging module 23 being electrically connected to the EMI module 12 and the bridge 32. At the same time, the operating temperatures of the pre-charging module 23, the electrolytic capacitor 22, and the control module 21 are similar, and the pre-charging module 23 is arranged on the second plate portion 20, and heat is dissipated simultaneously with the electrolytic capacitor 22 and the control module 21, thereby improving the heat dissipation effect of the driving module 1.

[0069] Reference Figure 1 to Figure 2 In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processing machine 100, the third plate portion 30 further includes a heating drive module 33, the heating drive module 33 is disposed on the third plate portion 30, the bridge 32 is located between the heating drive module 33 and the IPM module 31, the heating drive module 33 is electrically connected to the EMI module 12, and the heating drive module 33 is communicatively connected to the control module 21.

[0070] It should be noted that the heating driving module 33 may be a heating thyristor.

[0071] It should be noted that the temperature rise of the heating driving module 33 is relatively high. For example, when the heating driving module 33 is a heating thyristor, the heating thyristor will have a temperature rise of more than 40K during the heating process. Therefore, the heating driving module 33 is disposed on the third plate portion 30 .

[0072] It should be noted that the heating drive module 33 is electrically connected to the EMI module 12, and the bridge 32 is located between the heating drive module 33 and the IPM module 31, that is, the heating drive module 33, the pre-charging module 23 and the EMI module 12 are located in the same plane in the long side direction X, which facilitates the electrical connection of the EMI module 12 to the heating drive module 33 through the pre-charging module 23.

[0073] In the present application, the heating driving module 33 is arranged on the third plate portion 30 , and the operating temperature of the heating driving module 33 is close to the operating temperature of the electric bridge 32 and the IPM module 31 , so that the heating driving module 33 , the electric bridge 32 , and the IPM module 31 can dissipate heat simultaneously, thereby improving the heat dissipation effect of the driving module 1 .

[0074] Reference Figure 1 to Figure 2 In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processor 100, in the long side direction X, the components on the first plate portion 10 are all located at the same position, and / or the components on the second plate portion 20 are all located at the same position, and / or the components on the third plate portion 30 are all located at the same position.

[0075] It should be noted that in the long side direction X, the components on the first board portion 10 can all be located at the same position, that is, during the heat dissipation process, the components on the first board portion 10, such as the EMI module 12 and the switching power supply module 11, can dissipate heat simultaneously.

[0076] It should be noted that in the long side direction X, the components on the second plate portion 20 can all be located at the same position, that is, during the heat dissipation process, the components on the second plate portion 20, such as the control module 21, the electrolytic capacitor 22 and the pre-charging module 23 can dissipate heat at the same time.

[0077] It should be noted that in the long side direction X, the components on the third plate portion 30 can all be located at the same position, that is, during the heat dissipation process, the components on the third plate portion 30, such as the heating drive module 33, the bridge 32 and the IPM module 31 can dissipate heat simultaneously.

[0078] The present application arranges the components of the first plate portion 10 at the same position on the long side direction X, and / or arranges the components of the second plate portion 20 at the same position on the long side direction X, and / or arranges the components of the third plate portion 30 at the same position on the long side direction X, so that during the heat dissipation process of the driving module 1, the cooling medium can simultaneously dissipate heat for the components on the first plate portion 10, and / or the cooling medium can simultaneously dissipate heat for the components on the second plate portion 20, and / or the cooling medium can simultaneously dissipate heat for the components on the second plate portion 20, thereby improving the consistency of heat dissipation of the components on the first plate portion 10, the consistency of heat dissipation of the components on the second plate portion 20, and the consistency of heat dissipation of the components on the third plate portion 30, and improving the heat dissipation effect of the driving module 1.

[0079] It should be noted that the driving module 1 has three current flow routes, one of which is a strong current, that is, a current with a voltage of 220V, which flows from the power supply through the EMI module 12, the pre-charging module 23, the bridge 32, the electrolytic capacitor 22, the IPM module 31 in sequence, and then flows to the brushless motor 120 to drive the brushless motor 120. One is also a strong current, which flows from the power supply through the EMI module 12 to the heating drive module to heat the food processor 100. The other is a weak current, which flows from the power supply through the EMI module 12 to the switching power supply module 11, and the 220V voltage is converted into 5V and 15V voltages by the switching power supply module 11. The current of the 5V voltage flows to the control module 21 through the switching power supply module 11, and the current of the 15V voltage flows to the IPM module 31 through the switching power supply module 11.

[0080] By arranging the relative positions of the modules on the driving module 1, the layout is made more reasonable, the influence of electromagnetic interference on the driving module 1 is reduced, and the length of the electrical connection wire is shortened.

[0081] Reference Figure 3 to Figure 4 The utility model also provides a food processor 100, comprising a housing 110, a brushless motor 120 and a drive module 1 of the brushless motor 120 of the above embodiment applied to the food processor 100. The housing 110 has a receiving cavity 113 and an air inlet 111 and an air outlet 112 connected to the receiving cavity 113. The brushless motor 120 is arranged in the receiving cavity 113, and the brushless motor 120 has a first heat dissipation channel 121. The drive module 1 is arranged in the receiving cavity 113. The cooling medium passes through the first plate portion 10, the second plate portion 20 and the third plate portion 30 of the plate body 2 in sequence.

[0082] It should be noted that the air inlet 111 and the air outlet 112 can be arranged at intervals on the shell 110 along the long side direction X and connected to the accommodating cavity 113. The air inlet 111 and the air outlet 112 can also be arranged at intervals on the shell 110 along the short side direction Y and connected by two connected air ducts arranged at intervals along the short side direction Y, and the air ducts extend along the long side direction X.

[0083] It should be noted that the brushless motor 120 and the driving module 1 can be arranged in the accommodating cavity 113 at intervals along the long side direction X, or can be respectively arranged in two air ducts and arranged at intervals along the short side direction Y.

[0084] It should be noted that the temperature of the brushless motor 120 is relatively high, and the drive module 1 has relatively strict requirements for temperature control. The cooling medium first passes through the drive module 1 and then dissipates the heat of the brushless motor 120, so that the cooling medium with a lower temperature can first exchange heat with the various components on the drive module 1, dissipate the heat of the various components on the drive module 1, and ensure that they can work at a suitable temperature. Only then will the cooling medium reach the brushless motor 120 to dissipate the heat of the brushless motor 120. Thus, the risk that the high-temperature cooling medium that dissipates the heat of the brushless motor 120 first cannot effectively dissipate the heat of the drive module 1 is reduced.

[0085] The present application connects the air inlet 111, the plate body 2, the first heat dissipation channel 121 and the air outlet 112, so that the food processor 100 can dissipate heat for the brushless motor 120 and the drive module 1 at the same time. At the same time, the air inlet 111 is connected with the plate body 2, the first heat dissipation channel 121 and the air outlet 112 in sequence, so that the cooling medium first passes through the drive module 1 and then passes through the brushless motor 120, thereby reducing the influence of the heating temperature of the brushless motor 120 on the drive module 1 and improving the heat dissipation effect of the drive module 1.

[0086] Reference Figures 1 to 4In a preferred implementation of the drive module 1 of the brushless motor 120 applied to the food processing machine 100, the food processing machine 100 further includes a radiator 130, the radiator 130 has a second heat dissipation channel 131 extending along the long side direction X, and the second heat dissipation channel 131 is connected to the first air inlet 111 and the first heat dissipation channel 121 respectively; the third plate portion 30 is provided with an IPM module 31, a bridge 32 and a heating drive module 33 in sequence along the short side direction Y, and the radiator 130 is arranged on the third plate portion 30 and covers the IPM module 31, the bridge 32 and the heating drive module 33.

[0087] It should be noted that the radiator 130 can be connected to the plate body 2 by bolts.

[0088] It should be noted that the radiator 130 is another heat dissipation device different from the heat dissipation device for the driving module 1 , and is limited to heat dissipation for the third plate portion 30 .

[0089] It should be noted that when dissipating heat, the flow direction of the cooling medium is: passing through the IPM module 31, the bridge 32 and the heating drive module 33 in sequence. Since the IPM module 31 is an important component of the driving module 1, it has a high requirement for heat dissipation, and the temperature of the heating drive module 33 is relatively high, the cooling medium flows from the IPM module 31 to the heating drive module 33, reducing the risk of the high-temperature cooling medium exchanging heat with the IPM module 31 after the cooling medium passes through the heating drive module 33 first.

[0090] The present application dissipates heat for the IPM module 31 , the bridge 32 and the heating drive module 33 through the radiator 130 , thereby improving the heat dissipation effect of the drive module 1 and further improving the reliability of the operation of the drive module 1 .

[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 processing machine, characterized in that: include: The housing has a receiving cavity and an air inlet and an air outlet connected to the receiving cavity; A brushless motor is disposed in the accommodating cavity, and the brushless motor has a first heat dissipation channel; A driving module is disposed in the accommodating cavity, the driving module comprises a plate body, the plate body comprises a first plate portion, a second plate portion and a third plate portion sequentially connected along a long side direction of the plate body; The first board portion is provided with a switching power supply module, which is electrically connected to the power supply and used for converting voltage; the second board portion is provided with a control module, the switching power supply module is electrically connected to the control module, and the current flowing out of the switching power supply module flows into the control module; the third board portion is provided with an IPM module, the IPM module is electrically connected to the power supply and used to connect the brushless motor, the IPM module is used to convert DC current into three-phase current for the brushless motor, the switching power supply module is electrically connected to the IPM module to power the IPM module, and the IPM module is communicatively connected to the control module.

2. The food processor according to claim 1, characterized in that The switching power supply module, the control module and the IPM module are arranged at the same end of the board body in the short side direction.

3. The food processing machine according to claim 1, characterized in that The first board portion also includes an EMI module, and the EMI module and the switching power supply module are respectively arranged at two ends of the first board portion in the short side direction of the board body, and the EMI module is electrically connected to the power supply, the switching power supply module and the IPM module respectively. The current flowing out of the power supply flows to the IPM module and the switching power supply module respectively after passing through the EMI module, and the EMI module is used to eliminate current interference.

4. The food processing machine according to claim 3, characterized in that The third board portion further includes a bridge, which is disposed on the third board portion and adjacent to the IPM module in the short side direction.

5. The food processor according to claim 4, characterized in that The second board portion further includes a pre-charging module, which is disposed on the second board portion and is electrically connected to the EMI module and the electric bridge, respectively. The current flowing out of the EMI module flows to the electric bridge via the pre-charging module.

6. The food processor according to claim 4, characterized in that The third board portion also includes a heating drive module, which is arranged on the third board portion, the electric bridge is located between the heating drive module and the IPM module, the heating drive module is electrically connected to the EMI module, and the heating drive module is communicatively connected to the control module.

7. The food processor according to claim 1, characterized in that The food processor further comprises a radiator having a second heat dissipation channel, wherein the second heat dissipation channel is respectively connected to the air inlet and the first heat dissipation channel.

8. The food processor according to claim 4, characterized in that The electric bridge is electrically connected to the EMI module and the electrolytic capacitor respectively. The current flowing out of the EMI module flows to the electrolytic capacitor through the electric bridge and then flows to the IPM module. The electrolytic capacitor is used to store current, and the electric bridge is used to convert AC current into DC current and transmit it to the electrolytic capacitor.

9. The food processor according to claim 4, characterized in that The second board portion further includes a pre-charging module, which is electrically connected to the EMI module and the power bridge respectively, and the current flowing out of the EMI module flows to the power bridge via the pre-charging module.

10. The food processor according to claim 1, characterized in that The first plate portion has a first working temperature T1, the second plate portion has a second working temperature T2, and the third plate portion has a third working temperature T3, satisfying: T1<T2<T3.

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