Food processor with good heat dissipation effect

Abstract

The invention discloses a food processing machine with a good heat dissipation effect, and relates to the field of life electric appliances, the food processing machine comprises a machine body, a cup body and a brushless motor arranged at the bottom of the cup body and in transmission connection with a crushing device, the food processing machine further comprises a power module IGBT matched with the brushless motor, a heat dissipation channel communicated with the outside is further formed in the machine body, and the power module IGBT is connected with the brushless motor. The IGBT and the brushless motor are both located in the heat dissipation channel, so that the brushless motor and the IGBT can achieve effective heat dissipation in the heat dissipation channel, the temperature rise of the brushless motor and the IGBT can be effectively reduced, and the IGBT is arranged on the upstream of a gas flowing path in the heat dissipation channel relative to the brushless motor, so that airflow entering the heat dissipation channel can firstly pass through the IGBT and then pass through the brushless motor. In other words, the airflow can cool the IGBT and then cool the brushless motor, so that the airflow with lower temperature can cool the IGBT, the temperature difference between the airflow and the IGBT is improved, and the heat dissipation effect of the IGBT is improved.

Description

Technical Field

[0001] The invention relates to the technical field of household electrical appliances, and in particular to a food processor with good heat dissipation effect. Background Art

[0002] With the development of society and the improvement of living standards, people's pursuit of dietary diversity and healthy diet is constantly increasing. Therefore, various industrial food processing machines are gradually miniaturized and enter thousands of households. For example, soybean milk machines not only meet people's needs for healthy diet and nutrition, but also greatly improve people's quality of life, and are therefore loved by people.

[0003] The existing food processing machine usually includes a machine body, a cup body provided in the machine body and having a crushing chamber, a crushing device provided in the crushing chamber, and a motor provided at the bottom of the cup body and connected to the crushing device. When using the food processing machine, the user puts the food into the cup body, and the motor drives the crushing device to rotate at high speed to realize the processing of the food. In order to improve the stability of the working process and reduce the generation of noise, the motor is usually selected as a brushless motor. The brushless motor will drive the gas flow in the machine body, especially near the brushless motor, during the high-speed rotation process, thereby realizing the heat dissipation of the brushless motor. However, the brushless motor generates less heat in the actual working process. However, in order to realize the control of the motor and other components, the food processing machine is indispensable to be provided with a circuit board for controlling the operation of the motor and other components. The working temperature of the electronic components on the circuit board directly determines its service life and stability. During the working process, the circuit board will generate a certain amount of heat, but the airflow of the gas flowing through the circuit board in the machine body is small, resulting in a rapid increase in the temperature of the circuit board. The continuous heating of the circuit board may cause the components on the circuit board to fail due to overheating, thereby affecting the performance of the food processing machine and reducing its working reliability. Summary of the invention

[0004] The object of the present invention is to provide a food processor with good heat dissipation effect, so as to solve the problem that the heat dissipation efficiency of the circuit board is low and the circuit board is prone to overheating and failure due to less airflow passing through the circuit board in the existing food processor.

[0005] To achieve the above-mentioned purpose, the present invention provides a food processing machine with good heat dissipation effect, comprising a machine body, a cup body arranged on the machine body and having a grinding chamber, a grinding device arranged in the grinding chamber, and a brushless motor arranged at the bottom of the cup body and transmission-connected to the grinding device. The cup body is also provided with a drainage hole connected to the grinding chamber, and a drainage valve for controlling the opening and closing of the drainage hole is provided at the drainage hole. The food processing machine also includes a power module IGBT matched with the brushless motor. A heat dissipation channel connected to the outside is also formed in the machine body. The IGBT and the brushless motor are both located in the heat dissipation channel, and the IGBT is arranged upstream of the gas flow path of the brushless motor in the heat dissipation channel, so that the airflow in the heat dissipation channel passes through the IGBT first and then passes through the brushless motor.

[0006] The present application sets a brushless motor and, by virtue of the characteristics of the brushless motor, allows the user to use the food processor to process food with lower noise from the rotation of the motor, thereby achieving noise reduction. At the same time, the brushless motor can achieve variable frequency control, so that the food processor can control the brushless motor to output different speeds according to different food ingredients and processing processes, thereby achieving better and more complete processing effects on food ingredients and improving the taste of the finished food ingredients. In addition, the brushless motor occupies a smaller space, which helps to improve the compactness of the internal structure of the entire machine and greatly reduces the axial size of the brushless motor and the cup body.

[0007] At the same time, a heat dissipation channel connected to the outside world is formed in the body, and the IGBT and brushless motor are both located in the heat dissipation channel, so that the brushless motor and IGBT can achieve effective heat dissipation in the heat dissipation channel, which can effectively reduce the temperature rise of the brushless motor and IGBT, and avoid the situation where the temperature rise of the brushless motor and IGBT significantly leads to their accelerated aging.

[0008] At the same time, during the operation of the food processing machine, IGBT becomes a high-heat generating component as the components are miniaturized and installed at a high density, and its heat generation is much higher than that of the brushless motor. By arranging the IGBT upstream of the gas flow path in the heat dissipation channel relative to the brushless motor, the airflow entering the heat dissipation channel can first pass through the IGBT and then pass through the brushless motor, that is, the airflow can first cool the IGBT and then dissipate the heat of the brushless motor, so that the airflow with a lower temperature can dissipate the heat of the IGBT, increase the temperature difference between the airflow and the IGBT, and then improve the heat dissipation effect of the IGBT, further reduce the temperature rise of the IGBT, and at the same time, after completing the cooling of the IGBT, the airflow will pass through the brushless motor again to dissipate the heat of the brushless motor, avoiding the brushless motor being located upstream of the IGBT, resulting in the airflow entering the heat dissipation channel having to pass through the brushless motor first and then the IGBT, resulting in the airflow with a temperature rise after passing through the brushless motor having a small temperature difference with the IGBT when passing through the IGBT, resulting in a poor heat dissipation effect on the IGBT, thereby ensuring the heat dissipation effect of the brushless motor and the IGBT.

[0009] In a preferred implementation of a food processing machine with good heat dissipation effect, a main engine air inlet and a main engine air outlet are provided on the bottom wall of the machine body, and the heat dissipation channel includes a climbing section extending upward and a descending section connected to the climbing section and extending downward relative to the climbing section. The climbing section is connected to the main engine air inlet, and the descending section is connected to the main engine air outlet, so that the airflow entering the climbing section is circuitously bent and then discharged through the descending section.

[0010] By setting the heat dissipation channel to include an upwardly extending climbing section and a descending section connected to the climbing section and extending downward relative to the climbing section, and the climbing section is connected to the main engine air inlet, and the descending section is connected to the main engine air outlet, so that the outside air flows upward when entering the climbing section through the main engine air inlet, and then enters the descending section to move downward and is discharged from the main engine air outlet, while achieving heat dissipation of the brushless motor and IGBT, the space in the machine body can be effectively utilized. In addition, the circuitous heat dissipation path can effectively shorten the length of the heat dissipation channel, shorten the time that the airflow stays in the machine body, so that the airflow after the brushless motor and IGBT are cooled is discharged from the machine body more quickly, which helps to increase the gas flow rate, and then more gas per unit time enters the heat dissipation channel for heat dissipation, further improving the heat dissipation effect of the IGBT and the brushless motor. In addition, the main unit air inlet and outlet are both arranged on the bottom wall of the body, so that the noise generated when the gas passes through the main unit air inlet and outlet and the noise generated by the operation of the motor are directly transmitted to the desktop, and the noise transmission is effectively reduced through the sound absorption and reflection of the desktop, thereby achieving a noise reduction effect and improving the user experience.

[0011] In a preferred implementation of a food processing machine with good heat dissipation effect, the IGBT is vertically installed in the climbing section, and the main engine air inlet is located below the IGBT.

[0012] By installing the IGBT vertically in the climbing section, the space in the machine body is greatly utilized, the internal space utilization rate is improved, and the compactness of the whole machine structure is further improved. At the same time, the placement direction of the IGBT is the same as the extension direction of the climbing section, which can reduce the IGBT's obstruction to the airflow in the climbing section, thereby increasing the flow rate of the airflow in the climbing section, thereby improving the heat dissipation effect of the IGBT. In addition, the main engine air inlet is located below the IGBT, so that after the outside air enters the climbing section through the main engine air inlet, it can pass through the entire IGBT from top to bottom, thereby achieving all-round heat dissipation of the IGBT, further improving the heat dissipation effect of the IGBT.

[0013] In a preferred implementation of a food processing machine with good heat dissipation effect, the motor includes a shell forming an installation cavity and a motor body arranged in the installation cavity, and the shell is provided with a motor air inlet connecting the climbing section and the installation cavity and a motor air outlet connecting the installation cavity and the descending section.

[0014] By configuring the motor to include a housing with an installation cavity and a motor body disposed in the installation cavity, and the housing is provided with a motor air inlet connecting the climbing section and the installation cavity, the airflow after the IGBT is cooled by the climbing section enters the installation cavity through the motor air inlet to cool the motor body, which can greatly improve the heat dissipation efficiency of the brushless motor compared to the traditional method of only cooling the motor shell. At the same time, the motor air outlet is directly connected to the installation cavity, which can enable the airflow after the motor body is cooled to be directly discharged to the descending section through the motor air outlet, further improving the flow efficiency of the airflow, and thus improving the heat dissipation efficiency.

[0015] In a preferred implementation of a food processor with good heat dissipation effect, the shell includes an upper end cover arranged above the motor body and a lower end cover arranged below the motor, the motor air inlet is formed on the upper end cover, and the motor air outlet is formed on the lower end cover.

[0016] By making the shell include an upper end cover arranged above the motor body and a lower end cover arranged below the motor, and the motor air inlet is formed on the upper end cover, and the motor air outlet is formed on the lower end cover, on the one hand, the lower end cover and the upper end cover can be covered to realize the installation of the motor body and the assembly of the entire brushless motor, which helps to improve assembly efficiency and shorten assembly time; on the other hand, the motor air inlet is located above the motor air outlet, so that the airflow entering the installation cavity through the motor air inlet can only be discharged from the motor air outlet after passing through the motor body, which effectively improves the heat dissipation effect of the airflow on the motor body.

[0017] In a preferred implementation of a food processor with good heat dissipation effect, the air inlet of the motor is provided with an air guide structure extending outwardly into the climbing section.

[0018] By providing an air guide structure extending outward to the climbing section at the air inlet of the motor, the airflow in the climbing section can be guided more quickly and concentrated into the installation cavity through the air guide structure, which can effectively avoid the situation where the airflow in the climbing section diffuses outward and only a small part enters the installation cavity, resulting in poor heat dissipation effect of the brushless motor. This helps to improve the flow efficiency of the airflow, and thereby improve the heat dissipation effect of the brushless motor.

[0019] In a preferred implementation of a food processor with good heat dissipation effect, the air guide structure includes an air guide plate extending outward from the motor air inlet, the air guide plate includes a horizontal plate extending radially outward from the motor air outlet to above the climbing section and a vertical plate connected to the horizontal plate and extending downward.

[0020] By providing an air guide plate including a horizontal plate extending radially outward from the motor air outlet to the top of the climbing section and a vertical plate connected to the horizontal plate and extending downward, the airflow in the climbing section can flow in the local focusing space formed by the air guide plate and the inner wall of the climbing section, thereby achieving the effect of focusing flow, which can not only increase the airflow flow to the installation cavity, but also achieve rapid cooling of the IGBT installed in the climbing section, further improving the heat dissipation efficiency of the brushless motor and the IGBT.

[0021] In a preferred implementation of a food processor with good heat dissipation effect, a flexible hose is further provided in the machine body, the flexible hose forms a descending section, and the end of the flexible hose is connected to the air outlet of the main machine; or,

[0022] The food processor further comprises a main body inner shell arranged below the brushless motor, wherein the main body inner shell is formed with a descending section; or,

[0023] The body includes a shell, which forms a housing cavity for accommodating a brushless motor and an IGBT. The bottom wall of the housing cavity is provided with a host air inlet and a host air outlet. The IGBT is vertically installed between the host air inlet and the host air outlet to separate the housing cavity into a climbing section and a descending section.

[0024] By forming a descending section with the flexible hose and connecting the end of the flexible hose to the air outlet of the main unit, the airflow is discharged directly to the air outlet of the main unit through the channel formed in the flexible hose, which can effectively reduce the noise and deceleration caused by the collision of the airflow with other components in the descending section, help to ensure the flow rate of the gas, and further improve the heat dissipation effect. At the same time, the flexible hose can freely shuttle in the narrow space inside the machine body, which can reduce the space it occupies and improve the compactness of the internal structure.

[0025] By setting a main body inner shell under the brushless motor and forming a descending section in the main body inner shell, the main body inner shell can realize the molding of the descending section while realizing the installation support of components such as the brushless motor, thereby realizing functional integration, helping to reduce the number of components and improving the compactness of the internal structure.

[0026] By vertically installing the IGBT between the air inlet and the air outlet of the main engine to divide the accommodating cavity into a climbing section and a descending section, on the one hand, it is unnecessary to set up additional components to realize the molding of the climbing section and the descending section, thereby achieving the effect of saving components and further improving the structural compactness of the machine body; on the other hand, the airflow can dissipate heat on one side of the IGBT in the climbing section, and can also dissipate heat on the other side of the IGBT when the airflow passes through the descending section, thereby realizing double heat dissipation of the IGBT, which helps to further improve the heat dissipation effect of the IGBT and reduce its temperature rise.

[0027] In a preferred implementation of a food processor with good heat dissipation effect, the IGBT is arranged on the opposite side of the drain valve.

[0028] By arranging the IGBT on the opposite side of the drain valve, the installation of the IGBT does not interfere with the installation of the drain valve, so that the IGBT can overlap with the drain valve in the axial direction, thereby shortening the axial dimension of the whole machine and improving the compactness of the whole machine.

[0029] In a preferred implementation of a food processor with good heat dissipation effect, the IGBT is vertically installed in the heat dissipation channel, and the brushless motor at least partially overlaps with the IGBT in the horizontal direction.

[0030] By vertically installing the IGBT in the heat dissipation channel and at least partially overlapping the brushless motor with the IGBT in the horizontal direction, on the one hand, the space inside the machine body is greatly utilized, the internal space utilization rate is improved, and the compactness of the overall structure is further improved; on the other hand, the length of the heat dissipation channel can be shortened, thereby shortening the time that the airflow stays in the heat dissipation channel, so that the airflow after cooling the brushless motor and IGBT can be discharged from the machine body more quickly, which helps to increase the flow rate of the gas, thereby allowing more gas to enter the heat dissipation channel for heat dissipation per unit time, further improving the heat dissipation effect of the IGBT and the brushless motor. 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 of the present invention. In the drawings:

[0032] Figure 1 It is a structural schematic diagram of a food processing machine in one embodiment of the present invention;

[0033] Figure 2 A cross-sectional view of a food processor in one embodiment of the present invention;

[0034] Figure 3 A schematic diagram of a partial structure of a base in one embodiment of the present invention;

[0035] Figure 4 A cross-sectional view of a food processor in another embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of a partial structure of a base in another embodiment of the present invention;

[0037] Figure 6 A cross-sectional view of a food processor in another embodiment of the present invention;

[0038] Figure 7It is a schematic structural diagram of components such as a brushless motor and a base inner base in one embodiment of the present invention.

[0039] List of parts and reference numerals:

[0040] 1-machine body; 2-cup body, 21-crushing chamber; 3-inner seat of machine base, 31-air guide structure, 311-horizontal plate, 312-vertical plate; 4-drain valve; 5-brushless motor, 51-motor body, 52-housing, 521-upper end cover, 5211-rib, 522-lower end cover, 523-installation cavity, 53-motor air inlet, 54-motor air outlet; 6-IGBT; 7-heat dissipation channel, 71-climbing section, 72-descending section; 8-housing; 9-base, 91-host air inlet, 911-air inlet channel, 92-host air outlet, 921-air outlet channel; 10-main inner shell. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0042] 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 may 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.

[0043] like Figures 1 to 7 As shown, the present invention provides a food processing machine with good heat dissipation effect, comprising a machine body 1, a cup body 2 arranged on the machine body 1 and having a grinding chamber 21, a grinding device arranged in the grinding chamber 21, and a brushless motor 5 arranged at the bottom of the cup body 2 and transmission-connected to the grinding device, the cup body 2 is also provided with a drainage hole connected to the grinding chamber 21, and a drainage valve 4 for controlling the opening and closing of the drainage hole is provided at the drainage hole, the food processing machine also includes a power module IGBT6 matched with the brushless motor 5, a heat dissipation channel 7 connected to the outside is also formed in the machine body 1, the IGBT6 and the brushless motor 5 are both located in the heat dissipation channel 7, and the IGBT6 is arranged upstream of the gas flow path of the brushless motor 5 in the heat dissipation channel 7, so that the airflow in the heat dissipation channel 7 first passes through the IGBT6 and then passes through the brushless motor 5.

[0044] The present application sets a brushless motor 5, and with the help of the characteristics of the brushless motor 5, when the user uses the food processor to process food, the noise of the motor rotation is lower, thereby achieving the effect of noise reduction. At the same time, the brushless motor 5 can realize frequency conversion control, so that the food processor can control the brushless motor 5 to output different speeds according to different food ingredients and processing processes, which can make the processing effect of the food ingredients better and more complete, and improve the taste of the output food ingredients. In addition, the brushless motor 5 occupies a small space, which helps to improve the compactness of the internal structure of the whole machine and greatly reduce the axial size of the brushless motor 5 and the cup body 2.

[0045] At the same time, a heat dissipation channel 7 connected to the outside is formed in the body 1, and the IGBT6 and the brushless motor 5 are both located in the heat dissipation channel 7, so that the brushless motor 5 and the IGBT6 can achieve effective heat dissipation in the heat dissipation channel 7, which can effectively reduce the temperature rise of the brushless motor 5 and the IGBT6, and avoid the situation where the temperature rise of the brushless motor 5 and the IGBT6 significantly leads to their accelerated aging.

[0046] At the same time, during the operation of the food processing machine, IGBT6 becomes a high-heat generating component as the components are miniaturized and installed at a high density, and its heat generation is much higher than that of the brushless motor 5. By arranging IGBT6 at the upstream of the gas flow path in the heat dissipation channel 7 relative to the brushless motor 5, the airflow entering the heat dissipation channel 7 can first pass through IGBT6 and then pass through the brushless motor 5, that is, the airflow can first cool the IGBT6 and then dissipate the heat of the brushless motor 5, so that the airflow with a lower temperature can dissipate the heat of the IGBT6, thereby improving the temperature of the airflow and the IGBT6. The difference can improve the heat dissipation effect on IGBT6 and further reduce the temperature rise of IGBT6. At the same time, the airflow after cooling down the IGBT6 will pass through the brushless motor 5 again to dissipate the heat of the brushless motor 5, so as to avoid the brushless motor 5 being located upstream of the IGBT6, resulting in the airflow entering the heat dissipation channel 7 having to pass through the brushless motor 5 first and then through the IGBT6, causing the airflow with temperature rise after passing through the brushless motor 5 to have a small temperature difference with the IGBT6 when passing through the IGBT6, resulting in the deterioration of the heat dissipation effect of the IGBT6, thereby ensuring the heat dissipation effect of the brushless motor 5 and the IGBT6.

[0047] It should be noted that the power module used in conjunction with the brushless motor 5 in the present application is not limited to the IGBT 6, but can also be a MOSFET\IPM, etc. At the same time, the present application does not specifically limit the structure of the cup body 2, which can be a complete glass cup body; it can also be a glass cup body in the upper half and an aluminum die-cast cup body in the lower half, and a heating tube is integrally formed in the aluminum die-cast cup body; it can also be a complete aluminum die-cast cup body, and a heating tube is also integrally formed in the cup body, which will not be repeated here.

[0048] It should be noted that the present application does not specifically limit the extension direction of the heat dissipation channel 7. As a preferred embodiment of the present application, Figure 2 As shown, the bottom wall of the body 1 is provided with a host air inlet 91 and a host air outlet 92. Specifically, the body 1 includes a housing 8 and a base 9 for accommodating the brushless motor 5 and the IGBT 6. The host air inlet 91 and the host air outlet 92 are both formed on the base 9. The heat dissipation channel 7 includes an upwardly extending climbing section 71 and a descending section 72 connected to the climbing section 71 and extending downward relative to the climbing section 71. The climbing section 71 is connected to the host air inlet 91, and the descending section 72 is connected to the host air outlet 92, so that the airflow entering the climbing section 71 is circuitously bent and then discharged through the descending section 72.

[0049] By setting the heat dissipation channel 7 to include an upwardly extending climbing section 71 and a descending section 72 connected to the climbing section 71 and extending downward relative to the climbing section 71, and the climbing section 71 is connected to the main machine air inlet 91, and the descending section 72 is connected to the main machine air outlet 92, so that the outside air flows upward when entering the climbing section 71 through the main machine air inlet 91, and then enters the descending section 72 to move downward and is discharged from the main machine air outlet 92, while achieving heat dissipation of the brushless motor 5 and the IGBT6, the space in the machine body 1 can be effectively utilized. In addition, the circuitous heat dissipation path can effectively shorten the length of the heat dissipation channel 7, shorten the time that the airflow stays in the machine body 1, so that the airflow after the heat dissipation of the brushless motor 5 and the IGBT6 is discharged from the machine body 1 more quickly, which helps to increase the flow rate of the gas, and then more gas per unit time enters the heat dissipation channel 7 for heat dissipation, further improving the heat dissipation effect of the IGBT6 and the brushless motor 5. In addition, the main unit air inlet 91 and the main unit air outlet 92 are both arranged on the bottom wall of the body 1, so that the noise generated when the gas passes through the main unit air inlet 91 and the main unit air outlet 92 and the noise generated by the operation of the motor are directly transmitted to the desktop, and the noise transmission is effectively reduced through the sound absorption and reflection of the desktop, thereby achieving a noise reduction effect and improving the user experience.

[0050] It should be further explained that the present application does not specifically limit the installation method of IGBT6. As a preferred embodiment of the present application, Figure 2 As shown, the IGBT6 is vertically installed in the climbing section 71, and the main engine air inlet 91 is located below the IGBT6.

[0051] By vertically installing the IGBT6 in the climbing section 71, the space in the body 1 is greatly utilized, the internal space utilization rate is improved, and the compactness of the whole structure is further improved. At the same time, the placement direction of the IGBT6 is the same as the extension direction of the climbing section 71, which can reduce the obstruction of the IGBT6 to the air flow in the climbing section 71, thereby increasing the flow rate of the air flow in the climbing section 71, thereby improving the heat dissipation effect of the IGBT6. In addition, the main engine air inlet 91 is located below the IGBT6, so that after the outside air enters the climbing section 71 through the main engine air inlet 91, it can pass through the entire IGBT6 from top to bottom, thereby achieving all-round heat dissipation of the IGBT6, further improving the heat dissipation effect of the IGBT6.

[0052] As a preferred embodiment of this embodiment, Figure 2 As shown, the motor includes a shell 52 formed with an installation cavity 523 and a motor body 51 arranged in the installation cavity 523. The shell 52 is provided with a motor air inlet 53 connecting the climbing section 71 and the installation cavity 523 and a motor air outlet 54 connecting the installation cavity 523 and the descending section 72.

[0053] By configuring the motor to include a housing 52 with an installation cavity 523 and a motor body 51 disposed in the installation cavity 523, and the housing 52 is provided with a motor air inlet 53 connecting the climbing section 71 and the installation cavity 523, the airflow after the heat dissipation of the IGBT6 by the climbing section 71 enters the installation cavity 523 through the motor air inlet 53 to dissipate the heat of the motor body 51, which can greatly improve the heat dissipation efficiency of the brushless motor 5 compared to the traditional method of only dissipating the heat of the motor housing 8. At the same time, the motor air outlet 54 is directly connected to the installation cavity 523, so that the airflow after the heat dissipation of the motor body 51 can be directly discharged to the descending section 72 through the motor air outlet 54, further improving the flow efficiency of the airflow, and then improving the heat dissipation efficiency.

[0054] Furthermore, if Figure 2 As shown, the housing 52 includes an upper end cover 521 disposed above the motor body 51 and a lower end cover 522 disposed below the motor. The motor air inlet 53 is formed on the upper end cover 521 , and the motor air outlet 54 is formed on the lower end cover 522 .

[0055] By making the shell 52 include an upper end cover 521 arranged above the motor body 51 and a lower end cover 522 arranged below the motor, and the motor air inlet 53 is formed on the upper end cover 521, and the motor air outlet 54 is formed on the lower end cover 522, on the one hand, the covering of the lower end cover 522 and the upper end cover 521 can realize the installation of the motor body 51 and the assembly of the entire brushless motor 5, which helps to improve the assembly efficiency and shorten the assembly time; on the other hand, the motor air inlet 53 is located above the motor air outlet 54, so that the airflow entering the installation cavity 523 through the motor air inlet 53 can only be discharged from the motor air outlet 54 after passing through the motor body 51, which effectively improves the heat dissipation effect of the airflow on the motor body 51. It should be noted that the present application does not specifically limit the relative relationship between the stator core of the motor body 51 and the mounting cavity 523. The upper end cover 521 and the lower end cover 522 are respectively positioned and matched with the stator core, so as to form a permanent magnet brushless motor mounting cavity 523 between the upper end cover 521 and the lower end cover 522, which allows the stator core to be exposed or not exposed. Specifically, when the stator core is not exposed, the upper end cover 521 and the lower end cover 522 are directly buckled, and when the stator core is exposed, the upper end cover 521 and the lower end cover 522 are buckled with the upper and lower parts of the stator core respectively.

[0056] Preferably, if Figure 2 As shown, the motor air inlet 53 is arranged axially close to the motor air outlet 54, so that the airflow enters the installation cavity 523 through the motor air inlet 53 and passes through the motor body 51 before being quickly discharged outward through the motor air outlet 54, which can effectively reduce the coverage area and time of the airflow passing through the cup body 2, thereby reducing the impact of the airflow on the temperature of the cup body 2, and avoiding the situation where the airflow stays in the installation cavity 523 for a long time, causing the airflow to dissipate heat for the cup body 2 and causing the temperature of the cup body 2 to drop significantly, thereby ensuring the heating and heat preservation effect of the cup body 2.

[0057] Furthermore, if Figure 2 , Figure 7 As shown, the cup body 2 is provided with a rib 5211 extending downward to the outside of the motor body 51 , the rib 5211 and the bottom wall of the cup body 2 form an upper end cover 521 , the upper end cover 521 is connected to the lower end cover 522 to form an installation cavity 523 , and the air inlet is formed on the rib 5211 .

[0058] By providing the cup body 2 with a rib 5211 extending downward to the outside of the motor body 51, the upper end cover 521 is connected to the lower end cover 522 to form an installation cavity 523, and the motor air inlet 53 is formed on the rib 5211, the motor body 51 is circumferentially enclosed, the protective effect of the upper end cover 521 on the motor body 51 is enhanced, and the motor body 51 is prevented from being easily damaged by collision, which helps to extend its service life.

[0059] As a preferred embodiment of this embodiment, Figure 6As shown, the motor air inlet 53 is provided with an air guide structure 31 extending outwardly into the climbing section 71 .

[0060] By providing an air guide structure 31 extending outward to the climbing section 71 at the motor air inlet 53, the airflow in the climbing section 71 can be guided by the air guide structure 31 more quickly and concentrated into the installation cavity 523, which can effectively avoid the situation where the airflow in the climbing section 71 diffuses outward and only a small part enters the installation cavity 523, resulting in poor heat dissipation effect of the brushless motor 5, which helps to improve the flow efficiency of the airflow, and further improve the heat dissipation effect of the brushless motor 5.

[0061] It should be noted that the present application does not specifically limit the air guide structure 31. As a preferred embodiment of the present application, Figure 6 As shown, the wind guide structure 31 includes a wind guide plate extending outward from the motor air inlet 53, and the wind guide plate includes a horizontal plate 311 extending radially outward from the motor air outlet 54 to above the climbing section 71 and a vertical plate 312 connected to the horizontal plate 311 and extending downward.

[0062] By providing an air guide plate including a horizontal plate 311 extending radially outward from the motor air outlet 54 to the top of the climbing section 71 and a vertical plate 312 connected to the horizontal plate 311 and extending downward, the airflow in the climbing section 71 can flow in the local focusing space formed by the air guide plate and the inner wall of the climbing section 71, thereby achieving the effect of focusing. This can not only increase the airflow flow rate flowing to the installation cavity 523, but also achieve rapid cooling of the IGBT6 installed in the climbing section 71, thereby further improving the heat dissipation efficiency of the brushless motor 5 and the IGBT6.

[0063] Meanwhile, the shaping of the air guide structure 31 in the present application is not specifically limited. As a preferred embodiment of the present application, Figure 6 As shown, the food processor also includes an inner base 3 supported under the brushless motor 5, and the inner base 3 is formed with the above-mentioned air guide structure 31; of course, the air guide structure 31 can also be a structure that is integrally formed with the motor air outlet 54 and faces outward, which will not be repeated here.

[0064] It should be noted that the present application does not specifically limit the shaping of the descending section 72, which may be any one of the following embodiments:

[0065] Embodiment 1: In this embodiment, a flexible hose is further provided in the machine body 1 , the flexible hose forms a descending section 72 , and the end of the flexible hose is communicated with the main machine air outlet 92 .

[0066] By forming the descending section 72 with the flexible hose, and connecting the end of the flexible hose with the main unit air outlet 92, the airflow is directly discharged to the main unit air outlet 92 through the channel formed in the flexible hose, which can effectively reduce the noise and deceleration caused by the airflow colliding with other components in the descending section 72, and help to ensure the flow rate of the gas, thereby further improving the heat dissipation effect. At the same time, the flexible hose can freely shuttle in the narrow space in the body 1, which can reduce the space it occupies and improve the compactness of the internal structure.

[0067] Example 2: Figure 2 As shown, in this embodiment, the food processor further comprises a main body inner shell 10 disposed below the brushless motor 5 , and the main body inner shell 10 is formed with a descending section 72 .

[0068] By setting the main body inner shell 10 under the brushless motor 5, and forming a descending section 72 in the main body inner shell 10, the main body inner shell 10 can realize the molding of the descending section 72 while realizing the installation support of the brushless motor 5 and other components, thereby realizing functional integration, helping to reduce the number of components and improving the compactness of the internal structure.

[0069] Embodiment 3: In this embodiment, the body 1 includes a shell 8, and the shell 8 forms a accommodating cavity for accommodating the brushless motor 5 and the IGBT 6. The bottom wall of the accommodating cavity is provided with a main engine air inlet 91 and a main engine air outlet 92. The IGBT 6 is vertically installed between the main engine air inlet 91 and the main engine air outlet 92 to separate the accommodating cavity into a climbing section 71 and a descending section 72.

[0070] By vertically installing the IGBT6 between the main engine air inlet 91 and the main engine air outlet 92 to divide the accommodating cavity into a climbing section 71 and a descending section 72, on the one hand, it is unnecessary to set up additional components to realize the forming of the climbing section 71 and the descending section 72, thereby achieving the effect of saving components and further improving the structural compactness of the body 1; on the other hand, the airflow can dissipate heat on one side of the IGBT6 in the climbing section 71, and can also dissipate heat on the other side of the IGBT6 when the airflow passes through the descending section 72, thereby realizing double heat dissipation of the IGBT6, which helps to further improve the heat dissipation effect of the IGBT6 and reduce its temperature rise.

[0071] It should be noted that the present application does not specifically limit the structure of the host air inlet 91 and the host air outlet 92. As a preferred embodiment of the present application, Figure 4 , Figure 5As shown, an air inlet 91 of the host is provided with an air inlet channel 911 extending outward to the outside, and an air outlet channel 921 extending outward to the outside is provided at the air outlet 92 of the host, so that the airflow is guided more smoothly through the air inlet channel 911 and the air outlet channel 921 when entering and discharging, thereby avoiding the situation where foreign objects on the desktop block the air inlet 91 or the air outlet 92 of the host, resulting in failure of air intake or exhaust, thereby ensuring smooth heat dissipation of the entire machine.

[0072] As a preferred implementation of the present application, Figure 2 As shown, the IGBT 6 is arranged on the opposite side of the drain valve 4 .

[0073] By arranging IGBT6 on the opposite side of drain valve 4, the installation of IGBT6 does not interfere with the installation of drain valve 4, so that IGBT6 can overlap with drain valve 4 in the axial direction, thereby shortening the axial dimension of the whole machine and improving the compactness of the whole machine.

[0074] As a preferred implementation of the present application, Figure 2 As shown, the IGBT 6 is vertically installed in the heat dissipation channel 7, and the brushless motor 5 at least partially overlaps with the IGBT 6 in the horizontal direction.

[0075] By vertically installing the IGBT6 in the heat dissipation channel 7 and at least partially overlapping the brushless motor 5 with the IGBT6 in the horizontal direction, on the one hand, the space in the body 1 is greatly utilized, the internal space utilization rate is improved, and it helps to further improve the compactness of the overall structure; on the other hand, the length of the heat dissipation channel 7 can be shortened, thereby shortening the time that the airflow stays in the heat dissipation channel 7, so that the airflow after the brushless motor 5 and IGBT6 are cooled can be discharged from the body 1 more quickly, which helps to increase the flow rate of the gas, thereby allowing more gas to enter the heat dissipation channel 7 for heat dissipation per unit time, further improving the heat dissipation effect of the IGBT6 and the brushless motor 5.

[0076] The technical solution protected by the present invention is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any one embodiment with the technical solution of one or more other embodiments is within the protection scope of the present invention. Although the present invention 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 invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A food processing machine with good heat dissipation effect, comprising a machine body, a cup body provided on the machine body and having a grinding chamber, a grinding device provided in the grinding chamber, and a brushless motor provided at the bottom of the cup body and drivingly connected to the grinding device, the cup body is further provided with a drainage hole communicating with the grinding chamber, and a drainage valve for controlling the opening and closing of the drainage hole is provided at the drainage hole, characterized in that: The food processor also includes a power module IGBT that cooperates with the brushless motor. A heat dissipation channel connected to the outside is also formed in the body. The IGBT and the brushless motor are both located in the heat dissipation channel, and the IGBT is arranged upstream of the gas flow path of the brushless motor in the heat dissipation channel, so that the airflow in the heat dissipation channel passes through the IGBT first and then through the brushless motor.

2. A food processor with good heat dissipation effect according to claim 1, characterized in that: The bottom wall of the body is provided with a host air inlet and a host air outlet, and the heat dissipation channel includes a climbing section extending upward and a descending section connected to the climbing section and extending downward relative to the climbing section, the climbing section is connected to the host air inlet, and the descending section is connected to the host air outlet, so that the airflow entering the climbing section is circuitously bent and then discharged through the descending section.

3. A food processor with good heat dissipation effect according to claim 2, characterized in that: The IGBT is vertically installed in the climbing section, and the main engine air inlet is located below the IGBT.

4. A food processor with good heat dissipation effect according to claim 2, characterized in that: The motor includes a shell having an installation cavity and a motor body arranged in the installation cavity. The shell is provided with a motor air inlet connecting the climbing section and the installation cavity and a motor air outlet connecting the installation cavity and the descending section.

5. A food processor with good heat dissipation effect according to claim 4, characterized in that: The shell includes an upper end cover arranged above the motor body and a lower end cover arranged below the motor, the motor air inlet is formed on the upper end cover, and the motor air outlet is formed on the lower end cover.

6. A food processor with good heat dissipation effect according to claim 4, characterized in that: The motor air inlet is provided with an air guide structure extending outwardly into the climbing section.

7. A food processor with good heat dissipation effect according to claim 6, characterized in that: The wind guide structure includes a wind guide plate extending outward from the motor air inlet, and the wind guide plate includes a horizontal plate extending radially outward from the motor air outlet to above the climbing section and a vertical plate connected to the horizontal plate and extending downward.

8. A food processor with good heat dissipation effect according to claim 2, characterized in that: A flexible hose is further provided in the body, the flexible hose forms the descending section, and the end of the flexible hose is connected to the air outlet of the main unit; or, The food processor further comprises a main body inner shell disposed below the brushless motor, the main body inner shell being formed with the descending section; or, The body includes a shell, the shell forms a accommodating cavity for accommodating the brushless motor and the IGBT, the bottom wall of the accommodating cavity is provided with the host air inlet and the host air outlet, and the IGBT is vertically installed between the host air inlet and the host air outlet to separate the accommodating cavity into the climbing section and the descending section.

9. A food processor with good heat dissipation effect according to claim 1, characterized in that: The IGBT is arranged on the opposite side of the drain valve.

10. A food processor with good heat dissipation effect according to claim 1, characterized in that: The IGBT is vertically installed in the heat dissipation channel, and the brushless motor at least partially overlaps with the IGBT in the horizontal direction.

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