Food processor

Abstract

The utility model relates to a food processor. A motor is arranged in a shell, a power panel is arranged below the motor, a motor containing cavity and a power panel containing cavity which are independent are further arranged in the shell, the motor is located in the motor containing cavity, the power panel is located in the power panel containing cavity, and a heat dissipation cylinder is arranged on one side of the motor and one side of the power panel. The interior of the heat dissipation cylinder is hollow to form a heat dissipation channel, the motor containing cavity communicates with the power panel containing cavity through the heat dissipation channel, the wall of the motor containing cavity is provided with a first air opening communicating with the motor containing cavity and the outside, and the wall of the power panel containing cavity is provided with a second air opening communicating with the power panel containing cavity and the outside. The first air opening, the motor containing cavity, the heat dissipation channel, the power panel containing cavity and the second air opening are sequentially communicated to form a circulating air channel. According to the utility model, by arranging the heat dissipation cylinder communicated with the motor accommodating cavity and the power panel accommodating cavity, the temperature of airflow circulating between the motor and the power panel is reduced, and better synchronous heat dissipation of the motor and the power panel can be realized.

Description

Technical Field

[0001] The utility model relates to a kitchen appliance, in particular to a food processing machine. Background Art

[0002] In the existing food processing machine with the motor placed below, a power board is also arranged in the housing containing the motor, and the motor is electrically connected to the power board. A fan is connected to the bottom of the motor shaft, an air outlet is arranged near the fan, and an air inlet is also arranged in the housing. The motor drives the fan to rotate to discharge the air in the area where the motor is located from the air outlet, so that a negative pressure is formed in the area where the motor is located. At this time, the outside air is sucked into the housing from the air inlet from the outside to the inside, forming a circulating airflow from the air inlet to the air outlet to dissipate the heat of the motor. In the case of using only the motor fan, in order to dissipate the heat of the motor and the power board synchronously, the motor is usually placed sideways relative to the power board in the prior art, so that the airflow can flow through the power board and the motor in sequence. For example, patent CN202320288548.5 discloses a food processing machine, which places the motor and the power board sideways in the housing, and the housing is provided with an air inlet on the side close to the power board, and the housing is provided with an air outlet on the side close to the motor. The airflow flows through the power board and the motor in sequence to achieve synchronous heat dissipation of the motor and the power board. However, in order to achieve synchronous heat dissipation of the motor and the power board, this solution places the motor sideways relative to the power board. On the one hand, this causes the radial dimension of the casing to be too large, making the overall size of the food processor larger, which is not conducive to user storage. On the other hand, since this solution directly connects the motor to the air duct where the power board is located, the motor and the power board are cooled synchronously by circulating airflow. However, as the machine runs, the temperature rise of the motor will gradually increase, and the components of the power board will also heat up. When the motor reaches a higher speed and continuously rotates and crushes, the temperature of the motor is relatively high. After the airflow passes through the high-temperature area of the power board, the airflow exchanges heat with the power board, causing the temperature of the airflow to rise. The higher temperature airflow directly flows into the motor cavity and cannot effectively exchange heat with the higher temperature motor, resulting in poor heat dissipation effect of the airflow on the motor, resulting in excessive temperature rise of the motor at a higher speed and continuously rotating and crushing, affecting the normal operation of the motor. After long-term use, it is easy to cause heat damage to the motor components. Utility Model Content

[0003] The utility model provides a food processor, which is used to solve the problem that the temperature of the air flow flowing between the motor and the power board is high when the power board and the motor are synchronously cooled in the food processor with the motor placed below.

[0004] To achieve the above object, the utility model adopts the following technical solution: A food processor, comprising a housing, a cup body having a crushing chamber, a motor disposed below the cup body, and a power supply board disposed below the motor. The motor is electrically connected to the power supply board. A crushing device is disposed in the cup body, and the motor drives the crushing device to rotate. The motor and the power supply board are both disposed in the housing. It is characterized in that: An independent motor accommodation chamber and a power supply board accommodation chamber are further disposed in the housing. The motor is located in the motor accommodation chamber, and the power supply board is located in the power supply board accommodation chamber. A heat dissipation cylinder is disposed on one side of the motor and the power supply board. The inside of the heat dissipation cylinder is hollow to form a heat dissipation channel. The motor accommodation chamber communicates with the power supply board accommodation chamber through the heat dissipation channel. The motor accommodation chamber wall is provided with a first air outlet communicating the motor accommodation chamber with the outside, and the power supply board accommodation chamber wall is provided with a second air outlet communicating the power supply board accommodation chamber with the outside. The first air outlet, the motor accommodation chamber, the heat dissipation channel, the power supply board accommodation chamber, and the second air outlet are sequentially connected to form a circulating air duct.

[0005] Further, the length of the side wall of the heat dissipation cylinder is L, and 30mm ≤ L ≤ 100mm.

[0006] Further, the heat dissipation cylinder is a metal cylinder.

[0007] Further, a motor housing and a power supply board housing are disposed in the housing. The motor housing is provided with a motor accommodation chamber, and the power supply board housing is provided with a power supply board accommodation chamber.

[0008] Further, the power supply board housing is fixedly connected to the bottom wall of the housing, and the top of the power supply board housing is fixedly connected to the motor housing and the motor to support the motor housing and the motor; or, the motor housing and the motor are fixedly connected to the bottom of the cup body, and the power supply board housing is fixedly connected to the bottom wall of the housing; or, the motor housing and the motor are fixedly connected to the bottom of the cup body, and the power supply board housing is fixed to the bottom of the motor housing so that the power supply board housing, the motor housing, and the motor are jointly hoisted to the bottom of the cup body.

[0009] Further, the heat dissipation cylinder includes a first cylinder body and a second cylinder body which are separately arranged. The first cylinder body is disposed on the motor housing, and the second cylinder body is disposed on the power supply board housing. The lower end of the first cylinder body is butt-jointed with the upper end of the second cylinder body; or, the heat dissipation cylinder is disposed on the motor housing, and a conduction port is disposed on the power supply board housing, and the heat dissipation cylinder is butt-jointed with the conduction port; or, the heat dissipation cylinder is disposed on the power supply board housing, and a conduction port is disposed on the motor housing, and the heat dissipation cylinder is butt-jointed with the conduction port.

[0010] Further, a motor housing is provided inside the housing. A motor accommodation cavity is provided inside the motor housing. A power board accommodation cavity is formed by enclosing between the bottom of the motor housing and the inner bottom wall of the housing. Or, a motor housing is provided inside the housing. A motor accommodation cavity is provided inside the motor housing. A power board box is provided below the motor housing. A power board accommodation cavity is formed by enclosing between the bottom of the motor housing and the power board box.

[0011] Further, the motor includes a motor main body and a fan located at the bottom of the motor main body. A noise reduction air duct surrounding the motor accommodation cavity is provided outside the bottom of the motor housing. The first air inlet is located inside the noise reduction air duct. The motor accommodation cavity is communicated with the outside through the noise reduction air duct.

[0012] Further, a groove with an open bottom is provided outside the bottom of the motor housing. The first air inlet is located inside the groove. A baffle is also provided inside the housing. The baffle and the groove enclose to form a noise reduction air duct. The motor accommodation cavity is communicated with the outside through the noise reduction air duct.

[0013] Further, an air guide cylinder communicating with the noise reduction air duct is also provided inside the housing. The noise reduction air duct is communicated with the outside through the air guide cylinder.

[0014] After adopting the above technical solution, the following beneficial technical effects are achieved:

[0015] 1. In the present utility model, the power board is arranged below the motor, and an independent motor accommodation cavity and a power board accommodation cavity are provided. The two cavities are communicated through a heat dissipation cylinder on one side of the motor and the power board. The motor accommodation cavity and the power board accommodation cavity are respectively provided with a first air inlet and a second air inlet communicating with the outside, forming a circulating air duct that sequentially communicates the first air inlet, the motor accommodation cavity, the heat dissipation cylinder, the power board accommodation cavity, and the second air inlet. Compared with the prior art in which the motor cavity and the power board cavity are directly communicated, in the present utility model, a heat dissipation cylinder is arranged on one side of the motor and the power board. After the air flow passes through the motor or the power board, the temperature rises. During the process of the relatively high-temperature air flow flowing between the motor and the power board and passing through the heat dissipation cylinder, the air flow transfers heat to the wall of the heat dissipation cylinder, and the temperature of the air flow decreases while the temperature of the wall of the heat dissipation cylinder rises. At this time, the air outside the heat dissipation cylinder cools the wall of the heat dissipation cylinder so that the wall of the heat dissipation cylinder can continue to exchange heat with the subsequent air flow. After passing through the heat dissipation cylinder, the temperature of the air flow drops, and it can better exchange heat with the components in the cavity where the air flow continues to flow into. In addition, the heat dissipation cylinder has a converging effect on the air flow, increasing the air flow rate, and can more efficiently dissipate heat from the components in the cavity.

[0016] During the operation of the machine, there are stages when the motor does not work. At this time, the airflow in the air duct slows down significantly. In the prior art, the air duct where the motor is located is connected to the air duct where the power board is located through a relatively large opening between the two air ducts. At this time, although the motor stops working, the residual heat of the motor easily diffuses to the power board through the opening, resulting in damage to the components on the power board due to heat. In the present utility model, a heat dissipation cylinder is provided between the motor accommodation cavity and the power board accommodation cavity. After the gas is heated, its density decreases, and the heated gas moves upward. Therefore, the heat dissipated by the motor will not accumulate downward to the power board accommodation cavity. The heat dissipation cylinder can also more effectively delay the diffusion of heat from the motor to the power board compared with the opening. Thus, the present utility model can effectively reduce the temperature of the airflow flowing between the motor and the power board by providing the heat dissipation cylinder, and can delay the diffusion of the residual heat of the motor to the power board when the motor stops rotating, so as to achieve better synchronous heat dissipation of the motor and the power board, avoid failures of the motor and the power board due to excessive temperature, and improve the service life of the motor and the power board.

[0017] 2. In the present utility model, the length L of the heat dissipation cylinder is set to 30mm ≤ L ≤ 100mm. On the one hand, the airflow flowing through the heat dissipation channel can fully contact the wall of the heat dissipation cylinder, enabling the airflow to dissipate heat through the wall of the heat dissipation cylinder and the air outside the heat dissipation cylinder, more effectively reducing the temperature of the airflow flowing through the heat dissipation channel, so that the airflow entering the motor accommodation cavity can more effectively dissipate heat from the motor and avoid damage to the motor due to heat. On the other hand, the height of the heat dissipation cylinder does not exceed 100mm, which will not significantly increase the height of the whole machine and keeps the structure of the whole machine compact.

[0018] 3. In the present utility model, the heat dissipation cylinder is set as a metal cylinder. Since metal has faster heat conduction, the airflow flowing through the heat dissipation channel can more effectively dissipate heat through the wall of the metal cylinder and the outside of the cylinder, more effectively reducing the temperature of the airflow flowing through the heat dissipation channel, so that the airflow entering the motor accommodation cavity can more effectively dissipate heat from the motor and avoid damage to the motor due to heat.

[0019] 4. In the present utility model, a motor housing for accommodating the motor and a power board housing for accommodating the power board are provided inside the outer shell. The motor housing and the power board housing can effectively isolate the heat dissipated when the motor works and prevent the heat generated when the motor works from damaging the components on the power board.

[0020] 5. In the present utility model, a noise reduction air duct communicating with the first air outlet is provided outside the motor housing. When the airflow is discharged from the first air outlet, the airflow first enters the noise reduction air duct and then flows to the outside, reducing the noise of the airflow through the noise reduction air duct and reducing the generation of noise of the whole machine.

[0021] 6. In the present utility model, the outer shell is provided with an air guide cylinder, and the noise reduction air duct is communicated with the outside through the air guide cylinder. The air flow directly connects the motor accommodation cavity with the outside through the air guide cylinder and the noise reduction air duct. The air guide cylinder can guide more air flow into or out of the motor accommodation cavity, preventing the air flow from flowing to other positions and affecting the heat dissipation effect of the motor. Description of the Drawings

[0022] The present utility model will be further described below with reference to the drawings:

[0023] Figure 1 It is a schematic cross-sectional view of an embodiment of the food processor of the present utility model;

[0024] Figure 2 is Figure 1 a schematic cross-sectional view of the food processor from another angle in

[0025] Figure 3 is Figure 1 an exploded view of some components of the food processor in

[0026] Figure 4 is Figure 1 a schematic structural view of the lower housing of the motor of the food processor in

[0027] Figure 5 is Figure 4 a schematic structural view of the lower housing of the motor from another angle in

[0028] Figure 6 is Figure 1 a schematic structural view of the upper housing of the power board of the food processor in

[0029] Figure 7 is Figure 6 a schematic structural view of the upper housing of the power board from another angle in

[0030] Figure 8 is Figure 1 a schematic diagram of the air flow direction of the food processor from one angle in

[0031] Figure 9 is Figure 1 a schematic diagram of the air flow direction of the food processor from another angle in Detailed Embodiment

[0032] As Figure 1 - Figure 9As shown in the figure, this is an embodiment of the present utility model, a food processor, which includes a housing 2. The housing 2 includes a housing with an open bottom and a base 22. First ventilation holes 12 are provided on two opposite sides of the base 22, and a second ventilation hole 14 is provided on the other side of the base 22. A cup body 1 with an open top is arranged inside the housing 2, and a heating device is arranged at the bottom of the cup body 1. The cup body 1 has a crushing cavity, and a crushing device 10 is arranged in the crushing cavity. The top of the cup body 1 is covered with a cup cover 3 in an open manner, and a handle 4 is also arranged on the side wall of the housing 2. A motor 5 is arranged inside the housing 2 below the cup body 1. The motor 5 is a DC brushless motor, and the motor 5 includes a motor main body and a fan 13. The motor main body includes a stator assembly, a rotor assembly, and a motor shaft. The motor shaft passes through the bottom wall of the cup body 1 from the bottom of the cup body 1 and extends into the crushing cavity. The top of the motor shaft is connected to the bottom of the crushing device 10, and the bottom of the motor shaft is connected to the fan, so that after the motor 5 is started, it can drive the crushing device 10 to rotate and drive the fan 13 to rotate.

[0033] A motor upper housing 152 is arranged between the motor 5 and the cup body 1, and a motor lower housing 151 is arranged below the motor 5. The motor upper housing 152 and the motor lower housing 151 enclose to form a motor housing 15. A motor accommodation cavity 8 is formed inside the motor housing 15. A first cylinder 1514 extending downward is arranged on one side of the motor lower housing 151. The first cylinder 1514 is vertically through. A first air inlet 1512 is arranged on the side wall of the motor accommodation cavity 8. A groove 1515 with an open bottom is arranged outside the bottom of the motor lower housing 151. The first air inlet 1512 is arranged at one end of the groove 1515. The groove 1515 is arranged around the outer wall of the motor accommodation cavity 8.

[0034] A power board 6 is arranged below the motor housing 15. The motor is electrically connected to the power board, so that after the power board is connected to the power supply through a wire, it can provide electrical energy for the operation of the motor. A power board upper housing 161 is arranged between the motor housing 15 and the power board 6, and a power board lower housing 162 is arranged between the power board 6 and the base 22. The power board upper housing 161 and the power board lower housing 162 enclose to form a power board housing 16. A power board accommodation cavity 9 is formed inside the power board housing. The power board 6 is fixedly sealed in the inner top wall of the power board upper housing 161 by potting. A second cylinder 1611 vertically through is arranged on one side of the power board upper housing 161. Two annular ribs are arranged on the top wall of the power board upper housing 161. The two ribs enclose to form a convex ring 1613. One end of the convex ring 1613 is closed, and the other end is open. The open end of the convex ring 1613 is connected to a vertically through air guide cylinder 1612. Second air inlets 11 are arranged on two opposite sides of the power board lower housing 162.

[0035] During assembly, the motor 5, the motor housing 15 are fixedly connected to the bottom of the cup body 1. Then, the power board housing 16 is fixedly connected to the motor housing 15. Subsequently, the housing is sleeved outside the cup body 1, the motor 5, the motor housing 15, and the power board housing 16. The base 22 is installed at the bottom of the housing to close the bottom opening of the housing, and the bottom of the power board housing 16 is fixedly connected to the base 22.

[0036] When the power board housing 16 and the motor housing 15 are fixedly installed, the first cylinder 1514 and the second cylinder 1611 are inserted and matched to form a heat dissipation cylinder that connects the power board accommodation cavity 9 and the motor accommodation cavity 8. At the same time, the groove 1515 and the convex ring 1613 enclose a noise reduction air duct. The groove 1515 is located at one end of the first air vent 1512 corresponding to the closed end of the convex ring 1613, and the other end of the groove 1515 corresponds to the open end of the convex ring 1613. The noise reduction air duct is an annular air duct directly enclosed by the groove 1515 and the convex ring 1613. One end of the noise reduction air duct is the first air vent 1512, and the other end of the noise reduction air duct is connected to the air guide cylinder 1612. The bottom of the air guide cylinder is provided with a third ventilation hole 16121. When the base 22 and the power board housing 16 are fixedly installed, the first ventilation hole 12 is aligned with the second air vent 11, and the second ventilation hole 14 is aligned with the third ventilation hole 16121.

[0037] After assembly, starting from the first ventilation hole 12, the first ventilation hole 12, the second air vent 11, the power board accommodation cavity 9, the heat dissipation cylinder, the motor accommodation cavity 8, the first air vent 1512, the noise reduction air duct, the third ventilation hole 16121, and the second ventilation hole 14 are sequentially connected to form a circulating air duct. At this time, the motor accommodation cavity 8 and the power board accommodation cavity 9 are independent of each other, and are only connected through the heat dissipation cylinder. The motor accommodation cavity 8 is connected to the outside through the first air vent 1512, the noise reduction air duct, the third ventilation hole 16121, and the second ventilation hole 14. The power board accommodation cavity is connected to the outside through the second air vent 11 and the first ventilation hole 12. There is no direct connection between the motor accommodation cavity 8 and the power board accommodation cavity 9 and the inner cavity of the outer shell.

[0038] When the motor 5 rotates, the motor shaft drives the fan 13 to rotate. As the fan 13 rotates, it drives the air flow to flow out from the first air vent 1512, causing the pressure in the motor accommodation cavity 8 to decrease. Since the motor accommodation cavity 8 is located in the circulating air duct, the decrease in the air pressure in the motor accommodation cavity 8 causes the air flow to flow in the circulating air duct, as Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8As shown in the figure, outside air is inhaled into the circulation air duct through the first ventilation hole 12. The air flow first flows through the power supply board 6 in the power supply board accommodation cavity 9 along the circulation air duct, then enters the heat dissipation channel 7 of the heat dissipation cylinder, and then continues to flow upward into the motor accommodation cavity 8, flows through the motor 5, and then flows out through the first air outlet 1512 into the noise reduction air duct. After flowing out of the noise reduction air duct, it enters the air guide cylinder. Finally, the air flow passes through the third ventilation hole 16121 and the second ventilation hole 14 in sequence. During the process of the motor 5 starting to work, an air flow can continuously exist in the circulation air duct.

[0039] In the solution of this embodiment, a motor housing for accommodating the motor and a power supply board housing for accommodating the power supply board are arranged inside the housing. The motor is located above the power supply board. A first cylinder body and a second cylinder body are respectively arranged on the same side of the motor housing and the power supply board housing. The first cylinder body and the second cylinder body are butted to form a heat dissipation cylinder connecting the motor accommodation cavity and the power supply board accommodation cavity. The outside cold air flow first passes through the power supply board, absorbs the heat generated when the power supply board works, and dissipates the heat of the power supply board. Subsequently, the air flow with increased temperature continues to flow. When passing through the heat dissipation channel in the heat dissipation cylinder, the air flow transfers the heat to the heat dissipation cylinder wall, the temperature of the air flow decreases, and the temperature of the heat dissipation cylinder wall increases. At this time, the air outside the heat dissipation cylinder cools the heat dissipation cylinder wall, so that the heat dissipation cylinder wall can continue to exchange heat with the subsequent air flow. After flowing out of the heat dissipation cylinder, the temperature of the air flow drops compared with when it just passed through the power supply board. The air flow with decreased temperature can better exchange heat with the motor, thereby effectively dissipating the heat of the motor. By arranging the heat dissipation cylinder, while effectively dissipating the heat of the power supply board, the heat of the motor can also be effectively dissipated. Especially when the motor enters a higher rotation speed and is in the continuous rotation and crushing stage, the air flow entering the motor accommodation cavity can effectively exchange heat with the motor with a higher temperature, avoiding the motor temperature rising too high at this time, ensuring that the motor and the power supply board can work normally, avoiding damage caused by overheating of the motor and the power supply board, and improving the service life of the motor and the power supply board.

[0040] In this solution, a heat dissipation cylinder is arranged, and the motor is located above the power supply board. During the working process, when the motor stops rotating, the fan also stops. At this time, the air flow in the circulation air duct significantly slows down. Since the density of the gas decreases after being heated, the heated gas will move upward. Therefore, the heat dissipated by the motor will not gather downward to the power supply board accommodation cavity. The heat dissipation cylinder also further increases the distance between the motor accommodation cavity and the power supply board accommodation cavity, and can better isolate the heat generated by the motor, avoiding the heat of the motor from spreading to the power supply board accommodation cavity and causing damage to the power supply board components due to heat.

[0041] In this solution, when the air flow enters the motor accommodation cavity through the heat dissipation cylinder, since the heat dissipation cylinder is located on one side of the motor, after the air flow flows out of the heat dissipation cylinder, it will contact the motor housing wall and change its direction to flow from one end of the motor to the other end. The cooperation between the heat dissipation cylinder and the motor housing wall can aggregate the air flow flowing out of the heat dissipation cylinder, increasing the flow rate of the air flow entering the motor accommodation cavity, and enabling better heat dissipation for the motor.

[0042] In this solution, a noise reduction air duct is provided outside the motor housing, so that after the air flow is discharged from the first air outlet, it flows through the noise reduction air duct and then is discharged, reducing the noise of the air flow and also reducing the overall machine noise.

[0043] In this solution, the motor housing and the power board housing isolate the motor from the power board, and also prevent the heat generated during the operation of the motor from being transferred to the power board, causing damage to the components of the power board. At the same time, the motor housing isolates the motor from the heating device at the bottom of the cup, preventing the heat generated by the heating device from being transferred to the motor and affecting the heat dissipation effect of the motor.

[0044] In this solution, after the air flow passes through the noise reduction air duct, it enters the air guide cylinder and flows out through the air guide cylinder. The air guide cylinder can guide the air flow flowing out of the noise reduction air duct, enabling the air flow to flow out of the air guide cylinder concentratedly, avoiding the random diffusion of the air flow and affecting the air flow circulation in the circulation channel.

[0045] In this solution, the power board is arranged below the motor, which can reduce the radial size of the outer shell. In addition, the motor uses a DC brushless motor. Compared with the existing brushed motor, the axial size of the motor is smaller. After the motor and the power board are assembled, the structure is more compact, thereby reducing the size of the overall machine and facilitating user storage.

[0046] In another embodiment, if the rotation direction of the motor is opposite to that of the above embodiment, causing the motor accommodation cavity to inhale air flow from the first air outlet and resulting in an increase in the air pressure in the motor accommodation cavity. At this time, another air flow direction is formed in the circulation air duct. The air flow enters the noise reduction air duct after passing through the second ventilation hole and the air guide cylinder, and then enters the motor accommodation cavity from the first air outlet through the noise reduction air duct. After passing through the motor, the air flow enters the heat dissipation channel in the heat dissipation cylinder, and then enters the power board accommodation cavity through the heat dissipation channel. After passing through the power board, it is discharged from the second air outlet through the first ventilation hole.

[0047] In this solution, after the air flow passes through the motor, the air flow absorbs the heat generated by the operation of the motor, and the air flow with the increased temperature then enters the heat dissipation channel. The air flow transfers the heat to the heat dissipation cylinder wall, the temperature of the air flow decreases, and the temperature of the heat dissipation cylinder wall increases. At this time, the air outside the heat dissipation cylinder cools the heat dissipation cylinder wall so that the heat dissipation cylinder wall can continue to exchange heat with the subsequent air flow. After flowing out of the heat dissipation cylinder, the temperature of the air flow drops compared with when it just flowed through the motor, and the air flow with the decreased temperature can better exchange heat with the power supply board, thereby effectively dissipating the heat of the power supply board. This ensures that the motor and the power supply board can work normally, avoids damage caused by overheating of the motor and the power supply board, and extends the service life of the motor and the power supply board. In addition, when the outside air enters the noise reduction air duct through the air guide cylinder, the air guide cylinder can guide the outside air flow, increase the air flow rate in the circulation air duct, avoid the reduction of the heat dissipation effect of the motor and the power supply board caused by the random diffusion of the air flow, and improve the heat dissipation efficiency of the air flow.

[0048] In order to further reduce the temperature of the air flow passing through the heat dissipation channel, preferably, in another embodiment, the length L of the heat dissipation cylinder can be 30mm ≤ L ≤ 100mm. On the one hand, when the length of the heat dissipation cylinder is greater than 30mm, the air flow passing through the heat dissipation channel can fully contact the heat dissipation cylinder wall, and the heat of the air flow can be continuously transferred to the heat dissipation cylinder wall, more effectively reducing the temperature of the air flow passing through the heat dissipation channel, so that the air flow entering the motor accommodation cavity can more effectively dissipate the heat of the motor and avoid damage to the motor due to heat. On the other hand, when the height of the heat dissipation cylinder does not exceed 100mm, it will not significantly increase the overall height of the machine and keep the overall structure of the machine compact.

[0049] The heat dissipation cylinder can also be set as a metal cylinder. Since metal conducts heat faster, after the air flow passing through the heat dissipation channel transfers the heat to the metal cylinder wall, the air outside the metal cylinder can cool the metal cylinder wall with the increased temperature faster, improving the heat dissipation efficiency of the air flow, more effectively reducing the temperature of the air flow passing through the heat dissipation channel, so that the air flow entering the motor accommodation cavity can more effectively dissipate the heat of the motor and avoid damage to the motor due to heat.

[0050] Of course, the present utility model is not limited to the solutions of the above embodiments. In another embodiment, the heat dissipation cylinder can be arranged on the motor housing, and a corresponding conduction port is arranged on the power supply board housing. When the power supply board housing is fixed to the motor housing, the heat dissipation cylinder can be docked and matched with the conduction port to communicate the power supply board accommodation cavity and the motor accommodation cavity. Or, the heat dissipation cylinder can also be arranged on the power supply board housing, and a corresponding conduction port is arranged on the motor housing. When the power supply board housing is fixed to the motor housing, the heat dissipation cylinder can be docked and matched with the conduction port to communicate the power supply board accommodation cavity and the motor accommodation cavity.

[0051] In another embodiment, the second air outlet of the power board housing can be provided only on the side opposite to the heat dissipation cylinder. Correspondingly, the side wall of the base corresponding to the second air outlet is provided with a first ventilation hole, so that after the air flow flows in from the second air outlet, it flows from the end of the power board away from the heat dissipation cylinder to the side close to the heat dissipation cylinder, realizing sufficient heat dissipation of the power board. Among them, the second air outlet can also be provided on the upper housing of the power board, or sub-ports are respectively provided on the upper housing and the lower housing of the power board. After the upper housing and the lower housing of the power board are installed, the sub-ports are combined to form the second air outlet.

[0052] For the installation of the motor housing and the power board housing, in another embodiment, the motor, the motor housing can be fixedly connected to the bottom of the cup body, the power board housing is fixedly connected to the base, and after the base is installed with the housing, the bottom of the motor housing is held on the top of the power board housing. At this time, there is no fixed connection relationship between the motor housing and the power board housing; it can also be that the power board housing is fixedly connected to the base, the motor housing is fixed on the top of the power board housing, and after the base is installed with the housing, the motor housing is pressed against the bottom of the cup body, so that the motor shaft can extend from the bottom of the cup body into the crushing cavity. At this time, there is no fixed connection relationship between the motor housing and the bottom of the cup body; it can also be that the motor housing, the motor are fixedly connected to the bottom of the cup body, the power board housing is connected to the bottom of the motor housing, and after the base is installed with the housing, the bottom of the power board housing abuts against the inner bottom wall of the base. At this time, the power board housing, the motor, and the motor housing are jointly hoisted on the bottom of the cup body.

[0053] For the noise reduction air duct, in another embodiment, the top wall of the power board housing can be not provided with a convex ring, and the top wall of the power board is used as a baffle to enclose a noise reduction air duct with the groove; the air guide cylinder can also be cancelled. After the power board housing and the motor housing are installed, the top wall of the power board housing covers the opening of part of the groove to form a noise reduction air duct, and the groove not covered faces the second ventilation hole. Thus, after the air flow flows through the noise reduction air duct, it flows out through the opening of the groove not covered and the second ventilation hole; of course, the noise reduction air duct can also be integrally formed on the outer side of the bottom of the motor housing.

[0054] In another embodiment, a separate power board housing may not be provided. An upper mounting portion may be integrally formed at the bottom of the motor housing, and a lower mounting portion may be integrally formed on the inner bottom wall of the base. The upper and lower mounting portions enclose to form a power board accommodation cavity. Alternatively, a separate power board box may be provided between the upper mounting portion and the base, and the power board box and the upper mounting portion enclose to form a power board accommodation cavity. Similarly, when the upper and lower mounting portions enclose, a second air outlet may be provided on the upper mounting portion, or on the lower mounting portion, or sub-ports may be respectively provided on the upper and lower mounting portions. After the upper mounting portion and the lower mounting portion enclose, the sub-ports are combined to form a second air outlet. When the upper mounting portion and the power board box enclose, a second air outlet may be provided on the upper mounting portion, or on the power board box, or sub-ports may be respectively provided on the upper mounting portion and the power board box. After the upper mounting portion and the power board box enclose, the sub-ports are combined to form a second air outlet.

[0055] Of course, in the present utility model, a brushed motor may still be used for the motor.

[0056] It can be understood that the solutions of the above embodiments in the present utility model are not independent and can be combined with each other.

[0057] Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present utility model will be included within the scope of the claims.

Claims

1. A food processor, comprising a housing, a cup body having a crushing chamber, a motor disposed below the cup body, and a power board disposed below the motor. The motor is electrically connected to the power board. A crushing device is disposed in the cup body, and the motor drives the crushing device to rotate. The motor and the power board are both disposed in the housing, and it is characterized in that: An independent motor accommodating cavity and a power board accommodating cavity are further arranged inside the housing. The motor is located in the motor accommodating cavity, and the power board is located in the power board accommodating cavity. A heat dissipation cylinder is arranged on one side of the motor and the power board. The inside of the heat dissipation cylinder is hollow to form a heat dissipation channel. The motor accommodating cavity and the power board accommodating cavity are communicated through the heat dissipation channel. A first air vent communicating the motor accommodating cavity with the outside is arranged on the wall of the motor accommodating cavity, and a second air vent communicating the power board accommodating cavity with the outside is arranged on the wall of the power board accommodating cavity. The first air vent, the motor accommodating cavity, the heat dissipation channel, the power board accommodating cavity, and the second air vent are sequentially communicated to form a circulating air duct.

2. The food processor according to claim 1, wherein: The length of the heat dissipation cylinder is L. 30mm ≤ L ≤ 100mm.

3. The food processor according to claim 1, characterized in that: The heat dissipation cylinder is a metal cylinder.

4. The food processor according to claim 1, characterized in that: A motor housing and a power board housing are arranged inside the housing. A motor accommodating cavity is arranged inside the motor housing, and a power board accommodating cavity is arranged inside the power board housing.

5. The food processor according to claim 4, wherein: The power board housing is fixedly connected to the bottom wall of the housing, and the top of the power board housing is fixedly connected to the motor housing and the motor to support the motor housing and the motor. Alternatively, the motor housing and the motor are fixedly connected to the bottom of the cup body, and the power board housing is fixedly connected to the bottom wall of the housing. Alternatively, the motor housing and the motor are fixedly connected to the bottom of the cup body, and the power board housing is fixed to the bottom of the motor housing so that the power board housing, the motor housing, and the motor are jointly hoisted at the bottom of the cup body.

6. The food processor according to claim 4, characterized in that: The heat dissipation cylinder includes a first cylinder body and a second cylinder body which are separately arranged. The first cylinder body is arranged on the motor housing, and the second cylinder body is arranged on the power board housing. The lower end of the first cylinder body is butt-jointed and matched with the upper end of the second cylinder body. Alternatively, the heat dissipation cylinder is arranged on the motor housing, and a conduction port is arranged on the power board housing. The heat dissipation cylinder is butt-jointed and matched with the conduction port. Alternatively, the heat dissipation cylinder is arranged on the power board housing, and a conduction port is arranged on the motor housing. The heat dissipation cylinder is butt-jointed and matched with the conduction port.

7. The food processor according to claim 1, characterized in that: A motor housing is arranged inside the housing. A motor accommodating cavity is arranged inside the motor housing. A power board accommodating cavity is formed by enclosing between the bottom of the motor housing and the inner bottom wall of the housing. Alternatively, a motor housing is arranged inside the housing. A motor accommodating cavity is arranged inside the motor housing. A power board box is arranged below the motor housing. A power board accommodating cavity is formed by enclosing between the bottom of the motor housing and the power board box.

8. The food processor according to claim 1, characterized in that: The motor includes a motor main body and a fan located at the bottom of the motor main body. A noise reduction air duct surrounding the motor accommodating cavity is arranged outside the bottom of the motor housing. The first air vent is located in the noise reduction air duct. The motor accommodating cavity is communicated with the outside through the noise reduction air duct.

9. The food processor according to claim 1, characterized in that: A groove with an open bottom is arranged outside the bottom of the motor housing. The first air vent is located in the groove. A baffle is further arranged inside the housing. The baffle and the groove enclose to form a noise reduction air duct. The motor accommodating cavity is communicated with the outside through the noise reduction air duct.

10. The food processor according to claim 8 or 9, characterized in that: An air guide cylinder communicating with the noise reduction air duct is further arranged inside the housing. The noise reduction air duct is communicated with the outside through the air guide cylinder.

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