Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a machine shell and a stirring cup, a control panel, a brushless motor and an electromagnetic coil are arranged in the machine shell, the brushless motor and the electromagnetic coil are connected with the control panel, and the stirring cup comprises a cup body, a smashing cutter located in the cup body and driven by the brushless motor, a cup base fixed to the bottom of the cup body and a magnetic conduction heating disc. A heat dissipation fan, a heat dissipation cavity for containing the heat dissipation fan, a first heat dissipation air duct communicated with the heat dissipation cavity and a second heat dissipation air duct communicated with the heat dissipation cavity are further arranged in the machine shell, the heat dissipation cavity is communicated with the outside, the electromagnetic coil is located in the first heat dissipation air duct, and the second heat dissipation air duct is located in the second heat dissipation air duct. The brushless motor and the control panel are both located in the second heat dissipation air channel. The electromagnetic coil and the control panel are cooled respectively, the residence time of hot air is shortened, heat dissipation interference is reduced, the heat dissipation effect and reliability of the control panel, the brushless motor and the electromagnetic coil are greatly improved, rapid heat dissipation of the whole machine is achieved, and the service life of the whole machine is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the kitchen appliance technical field, concretely relates to a food processor. BACKGROUND

[0002] Traditional food processor is driven by series excited motor due to product pricing limit and simple driving demand, but the size of the series excited motor is large, which is inconvenient to take and store.

[0003] The applicant has developed a food processor with frequency conversion brushless motor before, which comprises a shell and a cup assembly detachably installed on the shell, wherein a frequency conversion brushless motor is installed in the cup seat of the cup assembly, and a power board is installed in the shell, the food processor utilizes the frequency conversion brushless motor to realize driving, has small size, constant controllable speed and torque, small working vibration and low noise, and improves the use experience of the food processor. But compared with the existing series excited motor, the frequency conversion brushless motor needs to set IPM module on the power board to realize driving, the IPM module is intelligent power module, which is a highly integrated power electronic device, and it integrates power switching device, driving circuit and fault detection circuit of overvoltage, overcurrent and overheating together, which causes the IPM module to generate strong heat in the working process, and the power board and IPM module need to be cooled. In order to realize the water washing of the cup assembly, the applicant further proposes a food processor with electromagnetic heating mode, sets electromagnetic coil in the shell, sets magnetic conductive heating disc at the bottom of the cup body, and the electromagnetic coil heats the magnetic conductive heating disc, so that the cup assembly does not need to set heating device additionally, the whole cup assembly can be set as non-electric structure, which makes the food processor safer.

[0004] However, the above technical solution causes multiple working modules, such as the electromagnetic coil, the brushless motor, the control circuit board of the electromagnetic coil, the control circuit board of the brushless motor, and the control circuit board of the food processor itself, to be arranged in the machine base, each working module generates heat, and a heat dissipation module needs to be arranged. The existing heat dissipation mode applied to the traditional food processor mainly includes: arranging a heat dissipation air duct in the machine shell, the motor, the coil disc, and the circuit board are arranged in the heat dissipation air duct, and a fan driven by the motor is arranged in the heat dissipation air duct. This heat dissipation mode causes the cold air entering the heat dissipation air duct from the air inlet to pass through the motor, the circuit board, and the coil disc in sequence, so that the air flow is heated by the motor when flowing through the circuit board and the coil disc located downstream of the heat dissipation air duct, the heat exchange efficiency is low, and the heat dissipation effect is poor. Moreover, the air flow in the heat dissipation air duct can only circulate during the operation of the motor, and the coil disc and the circuit board cannot be cooled after the motor stops working, which causes poor heat dissipation effect. Therefore, for the food processor driven by the brushless motor and heated by the electromagnetic coil, even if the traditional heat dissipation mode is directly used, the heat dissipation effect cannot be good, the heat dissipation is slow, and the motor and the circuit board may be damaged due to overheating, which affects the service life of the whole machine. In addition, due to the space structure and installation requirements of the working modules, the working modules are arranged at different positions in the machine shell, and the existing heat dissipation air duct structure causes poor air flow efficiency and slow air flow speed when flowing through the working modules, which greatly affects the heat dissipation function of the food processor. Practical new type content

[0005] The utility model provides a kind of food processor, solve based on brushless motor drive and electromagnetic coil heating food processor, its machine shell heat dissipation demand is greater, heat dissipation demand function module is more and space arrangement is complex, and prior art cannot reach good heat dissipation effect and the problem of low heat dissipation efficiency.

[0006] The technical scheme adopted by the utility model is as follows: the utility model provides a kind of food processor, including machine shell and detachably installed stirring cup above machine shell, control board is equipped in machine shell, brushless motor and electromagnetic coil are connected with control board, the stirring cup includes cup body, the comminution knife in cup body and by brushless motor drive, cup seat is fixed in cup body bottom, and magnetic conductive heating disc, the magnetic conductive heating disc cooperates with the electromagnetic coil to heat, the heat dissipation fan is further equipped in machine shell, the heat dissipation cavity containing the heat dissipation fan, the first heat dissipation air duct being communicated with the heat dissipation cavity and the second heat dissipation air duct being communicated with the heat dissipation cavity, the heat dissipation cavity is communicated with outside, the electromagnetic coil is located in the first heat dissipation air duct, and the brushless motor and control board are located in the second heat dissipation air duct.

[0007] The food processor provided by the utility model forms a heat dissipation module independent of the machine shell through the setting of the heat dissipation fan, the heat dissipation fan can work independently without being affected by the starting and stopping of the brushless motor, longer heat dissipation of the machine shell is realized, the heat dissipation cavity accommodating the heat dissipation fan, the first heat dissipation air duct and the second heat dissipation air duct in communication with the heat dissipation cavity are set, the heat dissipation cavity is formed into a negative pressure to suck in or blow out cold air flow through the working of the heat dissipation fan, so that part of the cold air flow in the heat dissipation cavity circulates in the first heat dissipation air duct, heat dissipation of the electromagnetic coil is realized; meanwhile, the other part of the cold air flow in the heat dissipation cavity circulates in the second heat dissipation air duct to realize heat dissipation of the brushless motor and the control panel, therefore, heat dissipation of the electromagnetic coil and the control panel with large heat generation is realized respectively, the heat air retention time is reduced, interference of the heat air after heat exchange with the electromagnetic coil to the brushless motor and the control panel components to be heat dissipated is avoided, heat dissipation interference is reduced, the heat dissipation effect and reliability of the control panel, the brushless motor and the electromagnetic coil are greatly improved, rapid heat dissipation of the whole machine and life improvement are realized.

[0008] In a preferred embodiment, the electromagnetic coil is arranged in a ring above the brushless motor, a ring cavity accommodating the electromagnetic coil is arranged in the machine shell, and a first communication pipeline is arranged vertically on one side of the brushless motor, the first communication pipeline, the ring cavity and the heat dissipation cavity are sequentially communicated to form the first heat dissipation air duct.

[0009] By arranging the electromagnetic coil in a ring and arranging the ring cavity to accommodate the electromagnetic coil, the electromagnetic coil can heat the stirring cup in a full range of directions, the heating efficiency is improved, and the heating is uniform; by arranging the vertical first communication pipeline, the first communication pipeline, the ring cavity and the heat dissipation cavity are sequentially communicated to form the first heat dissipation air duct, therefore, the heat dissipation cavity concentrates the cold air flow, the cold air flow is blown into the ring cavity, and the cold air flow circulates in the ring cavity to take away the heat of the electromagnetic coil and is then discharged to the outside through the first communication air duct, or the heat dissipation cavity is formed into a negative pressure, the cold air flow is concentrated into the ring cavity from the first communication pipeline, circulates in the ring cavity to take away the heat of the electromagnetic coil and is then blown to the outside through the heat dissipation cavity, the cold air flow is concentrated, the heating air flow of the electromagnetic coil is not affected by the heat dissipation air flow of the brushless motor, the heat exchange efficiency of the electromagnetic coil is improved, and the heat dissipation effect is good.

[0010] More preferably, the shell is provided with a partition plate, the partition plate separates the internal space of the shell into the annular cavity and a mounting cavity located below the annular cavity to mount the brushless motor and the control board, the partition plate is provided with a communication hole to communicate the annular cavity with the mounting cavity, and the heat dissipation cavity is arranged in the mounting cavity and communicates with the mounting cavity.

[0011] The partition plate is arranged in the shell to separate the annular cavity and the mounting cavity, i.e. to separate the electromagnetic coil from the brushless motor and the control board, thereby avoiding magnetic interference between the electromagnetic coil and the brushless motor, and achieving stable and reliable operation. The communication hole is arranged in the partition plate, the heat dissipation cavity is located in the mounting cavity and communicates with the mounting cavity, so that a negative pressure is formed in the heat dissipation cavity, cold air is concentrated into the annular cavity through the first communication pipeline, then exchanges heat with the electromagnetic coil in the annular cavity, and the heated air flow enters the mounting cavity and the heat dissipation cavity through the communication hole, and then is discharged. The heated air flow of the electromagnetic coil is not affected by the heat dissipation air flow of the brushless motor, so that the heat dissipation efficiency is high and the heat dissipation is reliable.

[0012] In a preferred embodiment, the shell has a mounting cavity for mounting the brushless motor and the control board, the shell wall of the shell is provided with a air inlet and an air outlet, and the air inlet, the mounting cavity and the air outlet are communicated to form the second heat dissipation air duct.

[0013] The air inlet and the air outlet are arranged through the shell wall of the shell, and the air inlet, the mounting cavity and the air outlet are communicated to form the second heat dissipation air duct, so that the structure is simple and compact, and the brushless motor and the control board can be arranged reasonably and reliably.

[0014] More preferably, the shell includes a shell body surrounding the mounting cavity and a ring-shaped mounting table protruding on the top of the shell body, the stirring cup is limitingly mounted in the ring-shaped mounting table, and the inside of the ring-shaped mounting table defines an annular cavity to accommodate the electromagnetic coil.

[0015] The ring-shaped mounting table is arranged to mount and accommodate the electromagnetic coil, and limitingly mount the stirring cup, so that the structure is compact, the volume of the shell is small, and the user can easily take and store the shell.

[0016] More preferably, the control board is arranged close to the air inlet than the brushless motor.

[0017] The control board is arranged close to the air inlet, the brushless motor generates more heat, and the control board is relatively small, so that the cold air is heated after passing through the control board but can still dissipate heat for the brushless motor, thereby achieving synchronous and reliable heat dissipation for the control board and the brushless motor.

[0018] Alternatively, the control board comprises a motor control board for controlling the brushless motor and a coil control board for controlling the electromagnetic coil, and the coil control board is arranged closer to the air inlet than the motor control board.

[0019] Similarly, since the motor control board and the coil control board generate a large amount of heat, arranging the coil control board closer to the air inlet can enable the air flow to pass through the coil control board and the motor control board to reliably dissipate heat from the two.

[0020] In a preferred embodiment, the brushless motor comprises a motor shell and a motor body located in the motor shell, and the motor shell is provided with an air inlet hole and an air outlet hole to form an internal circulation air duct in the second heat dissipation air duct.

[0021] By forming an internal circulation air duct in the second heat dissipation air duct, further reliable heat dissipation of the motor body is achieved, the air flow sequentially flows along the internal circulation air duct, efficient use of the air flow is achieved, heat dissipation air flow loss is avoided, and the heat dissipation efficiency is improved.

[0022] In a preferred embodiment, a second communication pipeline is arranged in the cabinet, and the second communication pipeline communicates the heat dissipation cavity with the outside.

[0023] By arranging a separate second communication pipeline, the second communication pipeline communicates the heat dissipation cavity with the outside, thereby guiding the air flow to be smoothly and directly discharged to the outside or into the heat dissipation cavity, achieving the centralized effect of the air flow, and the heat dissipation efficiency is higher.

[0024] In a preferred embodiment, the control board comprises a motor control board and a coil control board, the motor control board is provided with a first IPM module connected with the brushless motor and a first heat sink covering the first IPM module, and the coil control board is provided with a second IPM module connected with the electromagnetic coil and a second heat sink covering the second IPM module.

[0025] By arranging the first heat sink and the second heat sink, the contact area of the cold air flow with the first IPM module and the contact area of the cold air flow with the second IPM module are respectively increased, the heat exchange efficiency per unit time is high, and the temperature of the control board is reduced.

[0026] Alternatively, the control board comprises a motor control board and a coil control board, and the motor control board and the coil control board are arranged transversely side by side.

[0027] Alternatively, the control board comprises a motor control board and a coil control board, and the motor control board and the coil control board are both arranged transversely, and the motor control board is located above the coil control board.

[0028] Alternatively, the control board comprises a motor control board and a coil control board, and the motor control board and the coil control board are vertically arranged.

[0029] Alternatively, the brushless motor and the control board are arranged in parallel in the shell.

[0030] Alternatively, the control board is located below the brushless motor.

[0031] In a preferred embodiment, the heat dissipation fan is a blowing fan that blows air to the outside; or the heat dissipation fan is a suction fan that sucks air from the outside into the heat dissipation cavity.

[0032] When the blowing fan is used as the heat dissipation fan, after the blowing fan works, the cold air flow enters the first heat dissipation air duct and the second heat dissipation air duct and is discharged through the heat dissipation cavity, the amount of cold air flow is large, and the heat dissipation is efficient. The blowing fan can prevent foreign matter from being sucked into the heat dissipation cavity to a certain extent, and realize continuous heat dissipation effect.

[0033] When the suction fan is used, a negative pressure is formed in the heat dissipation cavity, the suction force of the cold air flow is large, the cold air flow entering the heat dissipation cavity is divided into the first heat dissipation air duct and the second heat dissipation air duct, and synchronous heat dissipation of the whole machine is realized. BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0035] Figure 1 It is a partial structure schematic view of the shell in an embodiment of the present application.

[0036] Figure 2 It is a structure schematic view of the first heat dissipation air duct in an embodiment of the present application.

[0037] Figure 3 It is a transverse cross-sectional schematic view of the shell in an embodiment of the present application.

[0038] Figure 4 It is a structure schematic view of the heat dissipation cavity of the shell in an embodiment of the present application.

[0039] Figure 5 It is a structure schematic view of the second heat dissipation air duct in an embodiment of the present application.

[0040] Figure 6 It is a structure schematic view of the bottom wall of the shell in an embodiment of the present application.

[0041] Figure 7A three-dimensional structure schematic view of a casing in an embodiment of the utility model;

[0042] Figure 8 A structure schematic view of each electric device in the casing in an embodiment of the utility model;

[0043] Figure 9 A structure schematic view of a brushless motor in an embodiment of the utility model.

[0044] Mark 10, casing; 101, shell; 11, heat dissipation cavity; 12, annular cavity; 13, installation cavity; 14, partition plate; 15, communication hole; 102, annular installation table; 20, control board; 21, motor control board; 22, coil control board; 30, brushless motor; 31, motor shell; 32, air inlet; 33, air outlet; 40, electromagnetic coil; 50, heat dissipation fan; 60, first heat dissipation air duct; 61, first communication pipeline; 62, second communication pipeline; 70, second heat dissipation air duct; 71, air inlet; 72, air outlet. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the overall concept of the utility model, the following will be described in detail in the form of examples in conjunction with the drawings of the specification.

[0046] In the following description, a lot of specific details are set forth in order to fully understand the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.It should be noted that, in the case of no conflict, the embodiments of the utility model and the features in each embodiment can be combined with each other.

[0047] In addition, in the description of the utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] This utility model provides a food processing machine in one embodiment, including a housing 10 and a stirring cup (not shown) detachably mounted on top of the housing 10. The housing 10 contains a control board 20, a brushless motor 30 connected to the control board 20, and an electromagnetic coil 40. The stirring cup includes a cup body, a pulverizing blade located inside the cup body and driven by the brushless motor 30, a cup base fixed to the bottom of the cup body, and a magnetic heating plate. The magnetic heating plate cooperates with the electromagnetic coil 40 for heating. The housing 10 also contains a cooling fan 50, a cooling cavity 11 accommodating the cooling fan 50, a first cooling duct 60 communicating with the cooling cavity 11, and a second cooling duct 70 communicating with the cooling cavity 11. Figure 1 , 2 As shown, the heat dissipation cavity 11 is connected to the outside, and the electromagnetic coil 40 is located inside the first heat dissipation duct 60, as... Figure 5 As shown, the brushless motor 30 and the control board 20 are both located within the second heat dissipation duct 70.

[0051] The food processor provided by the utility model forms the independent heat dissipation module to the machine shell 10 through setting the heat dissipation fan 50, the heat dissipation fan 50 can work independently without being influenced by the start and stop of the brushless motor 30, realizes the longer heat dissipation to the machine shell 10, through setting the heat dissipation cavity 11 containing the heat dissipation fan 50, the first heat dissipation air duct 60 and the second heat dissipation air duct 70 communicated with the heat dissipation cavity 11, the negative pressure suction cold air flow or the blowing cold air flow is formed in the heat dissipation cavity 11 by the working of the heat dissipation fan 50, so that a part of the cold air flow in the heat dissipation cavity 11 circulates in the first heat dissipation air duct 60, realizes the heat dissipation to the electromagnetic coil 40, simultaneously, another part of the cold air flow in the heat dissipation cavity 11 circulates in the second heat dissipation air duct 70 and realizes the heat dissipation to the brushless motor 30 and the control panel 20, therefore, the electromagnetic coil 40 and the control panel 20 with large heat generation are realized respectively heat dissipation, reduce the hot air retention time, avoid the interference of the hot air after heat exchange with the electromagnetic coil 40 to the brushless motor 30 and the control panel 20 components to be heat dissipated, reduce the heat dissipation interference, greatly improve the heat dissipation effect and reliability of the control panel 20, the brushless motor 30 and the electromagnetic coil 40, realize the quick heat dissipation and life improvement of the whole machine.

[0052] In a preferred embodiment, as shown in Figure 1 、 2 The electromagnetic coil 40 is arranged above the brushless motor 30 and in a ring shape, the machine shell 10 is provided with a ring cavity 12 containing the electromagnetic coil 40, and a first communication duct 61 vertically arranged on one side of the brushless motor 30, the first communication duct 61, the ring cavity 12 and the heat dissipation cavity 11 are sequentially communicated to form the first heat dissipation air duct 60.

[0053] By arranging the electromagnetic coil 40 in a ring shape and arranging the ring-shaped cavity 12 to accommodate the electromagnetic coil 40, the electromagnetic coil 40 can be heated in all directions around the stirring cup, improving the heating efficiency and achieving uniform heating. By arranging the vertical first communication pipeline 61, the first communication pipeline 61, the ring-shaped cavity 12, and the heat dissipation cavity 11 are sequentially communicated to form the first heat dissipation air duct 60. Therefore, the heat dissipation cavity 11 concentrates the cold air flow, which is blown into the ring-shaped cavity 12. After the cold air flow circulates in the ring-shaped cavity 12 to take away the heat of the electromagnetic coil 40, the cold air flow is discharged to the outside through the first communication pipeline. Alternatively, by forming a negative pressure in the heat dissipation cavity 11, the cold air flow is concentrated into the ring-shaped cavity 12 from the first communication pipeline 61. After the cold air flow circulates in the ring-shaped cavity 12 to take away the heat of the electromagnetic coil 40, the cold air flow is blown to the outside through the heat dissipation cavity 11. The cold air flow is concentrated, and the heating air flow of the electromagnetic coil 40 is not affected by the heat dissipation air flow of the brushless motor 30, so that the heat exchange efficiency of the electromagnetic coil 40 is improved, and the heat dissipation effect is good.

[0054] More preferably, as shown in Figure 2 The housing 10 is provided with a partition plate 14, which divides the internal space of the housing 10 into the ring-shaped cavity 12 and the mounting cavity 13 located below the ring-shaped cavity 12 to mount the brushless motor 30 and the control panel 20. The partition plate 14 is provided with a communication hole 15 to communicate the ring-shaped cavity 12 and the mounting cavity 13. The heat dissipation cavity 11 is arranged in the mounting cavity 13 and communicates with the mounting cavity 13.

[0055] Specifically, as shown in Figures 2-4 The cooling fan is started, and the cold air is concentrated into the ring-shaped cavity 12 from the first communication pipeline 61. Then, the cold air exchanges heat with the electromagnetic coil 40 in the ring-shaped cavity 12. The heated air flow enters the mounting cavity 13 and the heat dissipation cavity 11 through the communication hole 15 and is then discharged.

[0056] In a preferred embodiment, as shown in Figure 4 The housing 10 is provided with a second communication pipeline 62, which communicates the heat dissipation cavity 11 with the outside.

[0057] By arranging the independent second communication pipeline 62, the second communication pipeline 62 communicates the heat dissipation cavity 11 with the outside, so as to guide the air flow to be smoothly and directly discharged to the outside or enter the heat dissipation cavity 11, thereby realizing the concentration of the air flow and achieving a higher heat dissipation efficiency.

[0058] By arranging the partition plate 14 in the housing 10, the ring-shaped cavity 12 and the mounting cavity 13 are separated, i.e., the electromagnetic coil 40 is separated from the brushless motor 30 and the control panel 20, so as to avoid the magnetic interference between the electromagnetic coil 40 and the brushless motor 30, thereby achieving stable and reliable operation. By arranging the communication hole 15 in the partition plate 14 and arranging the heat dissipation cavity 11 in the mounting cavity 13 and communicating with the mounting cavity 13, the heating air flow of the electromagnetic coil 40 is not affected by the heat dissipation air flow of the brushless motor 30, so as to achieve a high heat dissipation efficiency and reliable heat dissipation.

[0059] In a preferred embodiment, as shown in Figure 5 , 6 , the casing 10 has a mounting cavity 13 for mounting the brushless motor 30 and the control board 20, the casing wall of the casing 10 is provided with a through-going air inlet 71 and an air outlet 72, the air inlet 71, the mounting cavity 13 and the air outlet 72 are communicated to form a second heat dissipation air duct 70.

[0060] By providing the through-going air inlet 71 and the air outlet 72 in the casing wall of the casing 10, the air inlet 71, the mounting cavity 13 and the air outlet 72 are communicated to form the second heat dissipation air duct 70, thus, the structure is simple and compact, and the brushless motor 30 and the control board 20 can be arranged reasonably and reliably cooled.

[0061] More preferably, as shown in Figure 7 , the casing 10 comprises a casing body 101 surrounding the mounting cavity 13 and a ring-shaped mounting table 102 protruding on the top of the casing body 101, the stirring cup is limitingly mounted in the ring-shaped mounting table 102, and the inside of the ring-shaped mounting table 102 defines a ring-shaped cavity 12 for accommodating the electromagnetic coil 40.

[0062] By providing the ring-shaped mounting table 102, the electromagnetic coil 40 can be mounted and accommodated by the ring-shaped mounting table 102, and the stirring cup can be limitingly mounted, thus, the structure is compact, and the volume of the casing 10 is small, which is convenient for users to take and store.

[0063] More preferably, as shown in Figure 5 , the control board 20 is arranged close to the air inlet 71 compared with the brushless motor 30;

[0064] By arranging the control board 20 close to the air inlet 71, since the brushless motor 30 generates large heat and the control board 20 is relatively small, the cold air first passes through the control board 20 and is heated but can still cool the brushless motor 30, thus, the control board 20 and the brushless motor 30 can be synchronously and reliably cooled.

[0065] In a preferred embodiment, as shown in Figure 8 , the control board 20 comprises a motor control board 21 for controlling the brushless motor 30 and a coil control board 22 for controlling the electromagnetic coil 40, and the coil control board 22 is arranged close to the air inlet 71 compared with the motor control board 21.

[0066] Similarly, since the motor control board 21 and the coil control board 22 generate large heat, arranging the coil control board 22 close to the air inlet 71 can make the air flow pass through the coil control board 22 and the motor control board 21 to reliably cool the two.

[0067] In a preferred embodiment, as shown in Figure 9As shown, the brushless motor 30 includes a motor shell 31 and a motor body located in the motor shell 31, the motor shell 31 is provided with an air inlet hole 32 and an air outlet hole 33 to form an internal circulation air duct in the second heat dissipation air duct 70.

[0068] By forming the internal circulation air duct in the second heat dissipation air duct 70, further reliable heat dissipation of the motor body is realized, so that the air flow sequentially flows along the internal circulation air duct, efficient use of air flow is realized, and heat dissipation air flow loss is avoided, thereby improving the heat dissipation efficiency.

[0069] In a preferred embodiment, the control board 20 includes a motor control board 21 and a coil control board 22, the motor control board 21 is provided with a first IPM module connected with the brushless motor 30 and a first heat dissipation fin covering the first IPM module, and the coil control board 22 is provided with a second IPM module connected with the electromagnetic coil 40 and a second heat dissipation fin covering the second IPM module.

[0070] By arranging the first heat dissipation fin and the second heat dissipation fin, the contact area of the cold air flow with the first IPM module and the contact area of the cold air flow with the second IPM module are respectively increased, the heat exchange efficiency per unit time is high, and the temperature of the control board 20 is reduced.

[0071] It should be noted that the structure and specific arrangement of the control board are not limited in the utility model, for example, in a preferred embodiment, as shown in the figure, Figure 8 The control board 20 includes a motor control board 21 and a coil control board 22, the motor control board 21 and the coil control board 22 are arranged transversely and side by side;

[0072] Of course, in another embodiment, the control board 20 includes a motor control board 21 and a coil control board 22, the motor control board 21 and the coil control board 22 are both arranged transversely, and the motor control board 21 is located above the coil control board 22;

[0073] In addition, in other embodiments, the control board 20 includes a motor control board 21 and a coil control board 22, the motor control board 21 and the coil control board 22 are both arranged vertically; or the brushless motor 30 and the control board 20 are arranged transversely and side by side in the machine shell 10; or the control board 20 is located below the brushless motor 30.

[0074] In a preferred embodiment, the heat dissipation fan 50 is a blowing fan that blows air to the outside; or the heat dissipation fan 50 is a suction fan that sucks air from the outside into the heat dissipation cavity 11.

[0075] The heat dissipation fan 50 is a blowing fan, when the blowing fan works, the cold air flows into the first heat dissipation air duct 60 and the second heat dissipation air duct 70 and then is discharged through the heat dissipation cavity 11, the amount of the cold air flow is large, and the heat dissipation is high efficient.

[0076] The parts not described in the utility model can be realized by using or referring to the existing technology.

[0077] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0078] The above is only an embodiment of the utility model, and is not used for limiting the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the claim range of the utility model.

Claims

1. A food processor comprising a machine housing and a mixing cup detachably mounted above the machine housing, the machine housing being provided with a control panel, a brushless motor connected to the control panel and an electromagnetic coil, the mixing cup comprising a cup body, a crushing blade located in the cup body and driven by the brushless motor, a cup base fixed to the bottom of the cup body and a magnetically conductive heating disc, the magnetically conductive heating disc cooperating with the electromagnetic coil to perform heating, characterized in that, The machine shell is further provided with a heat dissipation fan, a heat dissipation cavity accommodating the heat dissipation fan, a first heat dissipation air duct in communication with the heat dissipation cavity, and a second heat dissipation air duct in communication with the heat dissipation cavity. The heat dissipation cavity is in communication with the outside world. The electromagnetic coil is located in the first heat dissipation air duct. The brushless motor and the control board are both located in the second heat dissipation air duct.

2. A food processor as claimed in claim 1, characterised in that The electromagnetic coil is located above the brushless motor and arranged in a ring shape. The machine shell is provided with a ring-shaped cavity accommodating the electromagnetic coil and a first communication pipeline vertically arranged on one side of the brushless motor. The first communication pipeline, the ring-shaped cavity and the heat dissipation cavity are sequentially communicated to form the first heat dissipation air duct.

3. A food processor as claimed in claim 2, wherein The machine shell is provided with a partition plate. The partition plate divides the internal space of the machine shell into the ring-shaped cavity and a mounting cavity located below the ring-shaped cavity to mount the brushless motor and the control board. The partition plate is provided with a communication hole to communicate the ring-shaped cavity and the mounting cavity. The heat dissipation cavity is arranged in the mounting cavity and in communication with the mounting cavity.

4. A food processor as claimed in claim 1 or claim 3, wherein, The machine shell has a mounting cavity mounting the brushless motor and the control board. The shell wall of the machine shell is provided with an air inlet and an air outlet. The air inlet, the mounting cavity and the air outlet are communicated to form the second heat dissipation air duct.

5. A food processor as claimed in claim 4, wherein The machine shell includes a shell enclosing the mounting cavity and a ring-shaped mounting table protruding on the top of the shell. The stirring cup is limitedly mounted in the ring-shaped mounting table. The inside of the ring-shaped mounting table defines a ring-shaped cavity to accommodate the electromagnetic coil.

6. A food processor as claimed in claim 4, wherein The control board is arranged close to the air inlet compared with the brushless motor. Alternatively, the control board includes a motor control board controlling the brushless motor and a coil control board controlling the electromagnetic coil. The coil control board is arranged close to the air inlet compared with the motor control board.

7. The food processor of claim 1, wherein, The brushless motor includes a motor shell and a motor body located in the motor shell. The motor shell is provided with an air inlet and an air outlet to form an internal circulation air duct in the second heat dissipation air duct.

8. The food processor of claim 1, wherein, The machine shell is provided with a second communication pipeline. The second communication pipeline communicates the heat dissipation cavity with the outside world.

9. The food processor of claim 1, wherein, The control board includes a motor control board and a coil control board. The motor control board is provided with a first IPM module connected with the brushless motor and a first heat sink covering the first IPM module. The coil control board is provided with a second IPM module connected with the electromagnetic coil and a second heat sink covering the second IPM module.

10. The food processor of claim 1, wherein, The heat dissipation fan is a blowing fan blowing air to the outside world; or the heat dissipation fan is a suction fan sucking air from the outside world into the heat dissipation cavity.

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