CN219802042U - Food processor with good heat dissipation - Google Patents

Abstract

The utility model discloses a food processor with good heat dissipation, which comprises a cup body and a machine head arranged above the cup body, wherein the machine head is provided with a circulating air duct used for communicating an inner cavity of a motor with the outside, the circulating air duct comprises a first air duct and a second air duct which are respectively communicated with the outside, a second ventilation opening communicated with the second air duct is arranged at the lower part of a motor shell, a first ventilation opening and a hood-shaped air collecting cover arranged at the outer side of the first ventilation opening are arranged at the upper part of the motor shell, the air collecting cover is provided with an air collecting opening in butt joint fit with the first air duct, the inner cavity of the motor is communicated with the first air duct through the air collecting cover, and the outside air is directly replaced with the air in the inner cavity of the motor, so that the motor body is subjected to air cooling and heat dissipation, the heat dissipation effect is improved, and the motor body can be cooled, so that the sustainable working time is improved.

Description

Food processor with good heat dissipation

Technical Field

The utility model relates to the field of food processing devices, in particular to a food processing machine with good heat dissipation.

Background

In the food processing process, the food raw materials often need to be crushed firstly, especially the seeds of grains and oil crops with higher hardness, at present, most common food processing machines such as soymilk machines, crushers or wall breaking machines on the market, and the like, wherein the food processing machine comprises a machine head and a cup body, a motor is arranged in the machine head, a motor shaft extends out of the machine head and is provided with a shaft seal at the extending position of the machine head, a blade is arranged at the extending end of the motor shaft, when the food processing machine works, the motor drives the motor shaft to rotate so as to drive the blade to rotate, and because the interior of the machine head is in an approximately sealed state, a large amount of heat can be generated in the machine head when the motor runs at a high speed, and on the other hand, the machine head is usually provided with an extending part extending into the cup body, and the motor is subjected to heat radiation of heating of the food materials in the processing process, so that the motor is overheated.

The scheme of current solution above-mentioned heat dissipation problem, for example, the chinese patent publication No. CN208031047U, the rear end (i.e. the upper end) of motor sets up and has the extension axle that upwards extends, the outside of extension axle is equipped with helical blade, during motor operation, can drive the epaxial helical blade of extension and rotate, rotatory helical blade can stir the air in the aircraft nose, promote air flow, and it has the hole that is used for ventilation to lead to always on the aircraft nose, helical blade can promote the inside and outside air circulation of aircraft nose, in order to cool down the aircraft nose inside, but above-mentioned structure helical blade is located the extension axle that upwards extends, can only drive cold wind and circulate in the motor upper end, the radiating effect to the motor body (stator and rotor coil) is unobvious, the motor temperature risees, the motor body high temperature can influence motor life.

Disclosure of Invention

The utility model aims to provide a food processor with good heat dissipation, which can efficiently dissipate heat of a motor body in a working state of the food processor, and improve the heat dissipation effect of the motor so as to increase the effective utilization rate of the motor.

In order to achieve the above purpose, the utility model provides a food processor with good heat dissipation, which comprises a cup body and a machine head arranged above the cup body, wherein the machine head is provided with a motor, the motor comprises a motor shell with a motor cavity, a stator and a rotor shaft, wherein the stator and the rotor shaft are arranged in the motor cavity, the rotor shaft extends out from the lower end of the motor shell and is connected with a crushing cutter, the machine head is provided with a circulating air channel used for communicating the motor cavity with the outside, the circulating air channel comprises a first air channel and a second air channel which are respectively communicated with the outside, the lower part of the motor shell is provided with a second air channel communicated with the second air channel, the upper part of the motor shell is provided with a first air vent and a wind collecting cover which is in a cover shape outside the first air vent, the wind collecting cover is provided with a wind collecting opening which is in butt joint fit with the first air channel, and the motor cavity is communicated with the first air channel through the wind collecting cover.

According to the food processor provided by the utility model, the circulating air duct which is internally arranged in the machine head and is communicated with the outside and the motor inner cavity is adopted, when the motor body in the motor inner cavity works, the outside air is directly replaced with the air in the motor inner cavity, and the cold air passes through the stator coil part and the rotor coil part in the motor inner cavity to perform air cooling heat dissipation, so that the heat dissipation effect of the motor body is improved, the motor body can be cooled, the sustainable working time is improved, and the crushing efficiency is improved; the fan housing of cover form in the first vent outside of motor casing guarantees that air-out or air inlet is concentrated, promotes the wind pressure, avoids hot air to scurry in the aircraft nose and not effectively discharge the aircraft nose, and the wind is concentrated the back and is discharged to the external world or get into the motor inner chamber through air-collecting port and first wind channel, makes from external inhaled cold air and the wind path mutual independence that the hot air that passes through motor inner chamber stator, rotor corresponds, avoids hot-blast backward flow to influence the temperature of cold air to promote forced air cooling radiating effect.

Preferably, the air collecting cover comprises a surrounding plate for wrapping the motor casing and a diversion channel protruding from the side of the surrounding plate, the diversion channel is communicated with the first ventilation opening and extends towards the first air duct, and an outlet of the diversion channel forms the air collecting opening.

The size of the wind collecting cover is adapted to the size of the motor shell, the wind collecting cover is arranged on the motor shell, the diversion channel arranged on the wind collecting cover is used for enabling wind flow entering the diversion channel through the first ventilation hole to turn to finally enter the first air channel through the outlet of the diversion channel, namely the wind collecting opening, the motor generally comprises a carbon brush encircling the motor, a commutator and inner fan blades, the wind collecting cover encircles the structure, good carbon powder protection effect can be achieved, malfunction caused by pollution of other electrified components in the machine head by carbon powder is avoided, sound insulation and noise reduction effects are achieved to a certain extent, and user experience is improved.

Preferably, the machine head is provided with a communication cavity surrounding the outer sides of the motor shell and the air collecting cover, and the second air duct is positioned at the upper part of the machine head and is communicated with the second air vent through the communication cavity;

alternatively, the second air duct extends to interface with the second air vent.

According to the food processor provided by the utility model, the communication cavity is the annular gap between the machine head and the motor casing and the integrated cover, the second air channel is directly communicated with the second ventilation hole through the communication cavity, the air inlet or the air outlet is large, so that the heat dissipation effect is improved, the second air channel extends to be in butt joint with the second ventilation hole, the wind direction is single and concentrated, the turbulence is avoided, and the heat dissipation effect can be improved.

Preferably, the first ventilation opening is formed in the end face or the side face of the motor casing; or the second ventilation opening is formed in the end face or the side face of the motor casing.

Preferably, the food processor further comprises a mounting seat, the lower end of the motor casing is fixedly connected with the machine head through the mounting seat, and the mounting seat is provided with a hollow structure.

According to the food processing machine provided by the utility model, the hollowed-out design of the mounting seat reduces the contact area between the mounting seat and the motor and the metal lower cover, so that resonance can be effectively reduced, and the noise of the whole machine is improved.

Preferably, the second air vent is communicated with the second air channel through the hollow structure.

According to the food processor provided by the utility model, the mounting seats are uniformly distributed with the hollow structures along the side surfaces, so that cold air can conveniently enter the motor from the hollow positions, the heat exchange area is increased, and the heat dissipation efficiency is improved.

Preferably, the motor further comprises a first fan and a second fan, both of which are driven by the rotor shaft and are arranged at intervals in the axial direction of the motor.

Preferably, the first fan is a centrifugal fan, and the first ventilation opening is formed in the side surface of the motor casing and transversely corresponds to the centrifugal fan;

and/or the second fan is an axial flow fan, the second air vent is formed in the end face of the motor casing, and the axial flow fan corresponds to the second air vent vertically;

and/or, the first fan is close to the first ventilation opening, the second fan is close to the second ventilation opening, the second fan is arranged inside the motor casing, and the first fan is arranged inside or outside the motor casing.

According to the food processor provided by the utility model, the double cooling fans are arranged on the rotor shaft of the motor body, wherein the negative pressure generated by high-speed rotation of the axial flow fans pushes cold air to be sucked into the motor shell from the second air inlet at high speed, the cold air axially passes through the rotor after being accelerated by the axial flow fans, and then the air in the motor shell is secondarily accelerated and thrown out from the first air inlet by the centrifugal fans at high speed, so that the efficient circulating air cooling operation is formed.

Preferably, the machine head comprises an upper cover, a lower cover and a lifting handle convexly arranged on the upper cover, wherein the upper cover and the lower cover enclose a mounting cavity for mounting the motor, the lifting handle is hollow and provided with a blocking rib, the blocking rib divides the lifting handle into a first cavity and a second cavity, and the first air duct and the second air duct are positioned in the mounting cavity and are respectively communicated with the outside through the first cavity and the second cavity.

According to the food processor provided by the utility model, the first cavity and the second cavity which are respectively communicated with the first air duct and the second air duct are arranged on the handle, and the isolation rib is arranged in the handle to isolate the first cavity from the second cavity, so that hot air is prevented from flowing back, and the heat dissipation efficiency is improved. The first cavity and the second cavity are provided with openings which are communicated with the outside, and the cross-sectional shapes of the openings include, but are not limited to, circular, rectangular, fan-shaped, polygonal and the like, and the cross-sectional shape with the largest opening area is optimized under the premise of ensuring the strength of the handle so as to ensure the maximization of the area of the air inlet and the air outlet.

Preferably, the first air duct and the second air duct are symmetrically arranged at the upper part of the machine head;

or the machine head comprises an upper cover and a lower cover, wherein the upper cover and the lower cover enclose a mounting cavity for mounting the motor, and the first air duct and/or the second air duct are integrally formed on the lower cover;

or, the aircraft nose includes upper cover and lower cover, the upper cover with the lower cover encloses into the installation cavity in order to install the motor, the lower cover is equipped with wind channel recess and covers and locates wind channel recess's apron, the apron with wind channel recess encloses into first wind channel or second wind channel.

According to the food processor provided by the utility model, the first air channel and the second air channel are integrally formed with the lower cover, so that the air channel has better sealing property, the concentrated flow of wind is facilitated, and the air channel groove of the lower cover and the cover plate matched with the air channel groove are convenient to produce and process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic view of an exemplary embodiment of the present utility model in an exploded state.

Fig. 2 is a schematic cross-sectional view of an exemplary embodiment of the present utility model.

Fig. 3 is a schematic structural view of an exemplary embodiment of a wind collecting housing according to the present utility model.

FIG. 4 is a schematic structural view of an exemplary embodiment of the first air duct and the second air duct of the present utility model.

FIG. 5 is a schematic structural view of an exemplary embodiment of the assembly of the air collection hood and the lower cover of the present utility model.

Fig. 6 is a schematic structural view of an exemplary embodiment of the mounting base of the present utility model.

Fig. 7 is a schematic structural view of an exemplary embodiment of the upper cover of the present utility model.

Fig. 8 is a schematic structural view of an exemplary embodiment of a handle of the present utility model.

Fig. 9 is a schematic structural view of an exemplary embodiment of the first fan and the second fan of the present utility model.

Reference numerals illustrate:

10-an upper cover; 11-a lower cover; 110-a first air duct; 111-a second air duct; 12-a handle; 120-blocking ribs;

121-a first cavity; 122-a second cavity; 13-communicating the cavity;

2-an electric motor; 20-motor inner cavity; 21-a first fan; 22-a second fan; 23-motor housing; 230-a first vent; 231-second vent;

3-a wind collecting hood; 30-air collection port; 31-coaming; 32-diversion channels;

4-mounting seats; 40-hollow structure.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

The utility model is described below with reference to the accompanying drawings:

the utility model provides a food processor with good heat dissipation, as shown in fig. 1-9, which comprises a cup body and a machine head arranged above the cup body, wherein the machine head is provided with a motor 2, the motor 2 comprises a motor shell 23 with a motor inner cavity 20, a stator and a rotor shaft which are arranged in the motor inner cavity 20, the rotor shaft extends out of the lower end of the motor shell 23 and is connected with a crushing cutter, the machine head is provided with a circulating air duct for communicating the motor inner cavity 20 with the outside, the circulating air duct comprises a first air duct 110 and a second air duct 111 which are respectively communicated with the outside, the lower part of the motor shell 23 is provided with a second air vent 231 communicated with the second air duct 111, the upper part of the motor shell 23 is provided with a first air vent 230 and a wind collecting cover 3 which is in a cover shape outside the first air vent 230, the wind collecting cover 3 is provided with a wind collecting opening 30 which is in butt joint fit with the first air duct 110, and the motor inner cavity 20 is communicated with the first air duct 110 through the wind collecting cover 3.

As shown in fig. 1, fig. 4 and fig. 7, the machine head comprises an upper cover 10 and a lower cover 11, wherein the lower cover 11 comprises a plastic lower cover 11 and a metal lower cover 11, the upper cover 10 and the lower cover 11 are detachably connected, a mounting cavity is formed by enclosing the upper cover 10 and the lower cover 11 for mounting a motor, the machine head further comprises a lifting handle 12 convexly arranged on the upper cover 10, air guide grooves and screw columns are arranged on two sides of the upper cover, the air guide grooves are respectively used for connecting the lower cover and an air inlet and outlet cavity on two sides of the lifting handle, the upper cover 11 and the lifting handle 12 are fixedly matched through four screw columns on two sides, as shown in fig. 2 and fig. 8, the lifting handle 12 is hollow and provided with a blocking rib 120, the lifting handle 12 is divided into a first cavity 121 and a second cavity 122 by the blocking rib 120, and the first air duct 110 and the second air duct 111 are positioned in the mounting cavity and are respectively communicated with the outside through the first cavity 121 and the second cavity 122.

The specific structures of the first air duct 110 and the second air duct 111 are as shown in fig. 4 and 5, and the first air duct 110 and the second air duct 111 are integrally formed on the lower cover 11; as an alternative, the lower cover 11 may further be provided with an air duct groove and a cover plate covering the air duct groove, where the cover plate and the air duct groove enclose the first air duct 110 or the second air duct 111, and as an alternative, the first air duct 110 and the second air duct 111 may be integrated with the upper cover 10, and directly sleeved around the motor during installation.

The specific structure of the air collecting cover 3 is shown in fig. 3, the air collecting cover 3 comprises a coaming 31 wrapping the motor casing 23 and a diversion channel 32 protruding to the side of the coaming 31, the diversion channel 32 is communicated with the first ventilation opening 230 and extends towards the first air duct 110, and the outlet of the diversion channel 32 forms the air collecting opening 30.

The wind collecting cover 3 is arranged on the motor casing 23, the wind collecting cover 3 is provided with the diversion channel 32, the inner side of the diversion channel 32 is in an obtuse-angle smooth transition design, the minimum flow and pressure loss of wind flow in the steering process is ensured, and meanwhile, the backflow of hot air is effectively avoided; the fan housing 3 both sides are equipped with the installation screw hole, and plastics lower cover 11 sets up in the mounting hole that the screw corresponds equally, through screw and lower cover 11 sealing fit during the assembly, for making the sealed effect of the butt joint of fan housing 3 and plastics lower cover 11 better, can set up recess or arch at lower cover 11, set up arch and recess at fan housing 3, make recess and protruding butt joint, then screw up the screw, recess and bellied cooperation mode play the wind-stopping effect, fan housing 3 embraces motor reversing part and overhead centrifugal fan blade simultaneously, can effectively reduce the reversing noise of motor and the wind noise of high-speed rotation, can also play good carbon dust guard action simultaneously, avoid other electrified parts in the aircraft nose to receive the carbon dust pollution and lead to the functional disorder.

As shown in fig. 2, the motor 2 further includes a first fan 21 and a second fan 22, each of the first fan 21 and the second fan 22 being driven by the rotor shaft and being arranged at intervals in the axial direction of the motor. The first fan 21 and the second fan 22 are both arranged in the motor casing 23, the first fan 21 is a centrifugal fan, the first ventilation opening 230 is formed in the side face of the motor casing 23 and transversely corresponds to the centrifugal fan, the second fan 22 is an axial flow fan, the second ventilation opening 231 is formed in the end face of the motor casing 23, and the axial flow fan vertically corresponds to the second ventilation opening 231.

The motor 2 is internally provided with double cooling fans, the motor casing 23 is provided with a first ventilation opening 230 (namely an air outlet) and a second ventilation opening 231 (namely an air inlet), and preferably, the second ventilation opening 231 is vertically arranged on the bottom surface of the motor casing 23, for example, fan-shaped holes are uniformly distributed on the bottom surface, and can also be arranged on the side surface of the motor casing 23; preferably, the second air vent 231 is horizontally arranged on the side surface of the motor casing 23, and can also be arranged on the end surface of the motor casing 23, the axial fan is arranged in front of the rotor to push cold air to be sucked from the air inlet at the bottom of the motor casing 23, the cold air passes through the rotor after being accelerated by the axial fan, is thrown out to the diversion channel 32 of the air collection cover 3 from the air outlet of the motor casing 23 at a high speed along the tangential direction of the outer circle of the fan after being secondarily accelerated by the centrifugal fan, then enters the first air duct 110 from the air collection opening 30 and is discharged to the outside, preferably, the central position of the first air vent 230 is kept flush with the central position of the fan blade of the centrifugal fan, so that the air loss is reduced, and meanwhile, the single side of the first air vent 230 of the motor casing 23 is independently designed, the air outlet is ensured to be concentrated, and the air pressure is multiplied. The diameter d2 of the blade of the axial flow fan and the outer diameter of the rotor core should satisfy: d2.ltoreq.d, preferably d2=d; the number of the blades is 5-17 (the number is preferably odd), and the blades are uniformly distributed along the circumferential direction; the diameter D1 of the centrifugal fan blade and the inner diameter D of the shell are required to satisfy: D-D1 is more than 0 and less than 2, the number of blades is 9-35 (the number of blades is preferably odd), the blades are in a rear drive involute shape and are uniformly distributed along the circumferential direction, and the air quantity and the noise reduction effect are both considered; the fan blade is made of insulating high-temperature-resistant plastics such as PPS, nylon and the like.

As shown in fig. 2, the machine head is provided with a communication cavity 13 surrounding the outer side of the motor casing 23 and the wind collecting cover 3, and the second wind channel 111 is positioned at the upper part of the machine head and is communicated with the second wind channel 231 through the communication cavity 13; the whole gap is used as the communication cavity 13 without arranging a channel, so that the air inlet or the air outlet is large, and the heat dissipation effect is improved.

Alternatively, the second air duct 111 extends to interface with the second air vent 231. The wind direction can be single and concentrated, turbulence is avoided, and the heat dissipation effect can be improved as well.

As a preferred embodiment of the utility model, as shown in fig. 2 and 6, the motor housing also comprises a mounting seat 4, namely a bearing seat, which is made of high-temperature and high-strength materials such as aluminum alloy or nylon, the outer diameter of the bearing seat and the inner diameter of the metal lower cover are provided with fit gaps, so that air circulation is facilitated, the lower end of the motor housing 23 is fixedly connected with the machine head through the mounting seat 4, the mounting seat 4 is provided with a hollowed-out structure 40, the mounting seat 4 is specifically sleeved at the bottom of the motor housing 23, the motor housing 23 is connected through screwing threads, a rotor shaft penetrates through the mounting seat 4, and the mounting seat 4 and the metal lower cover are fixed through screws.

The hollow design of mount pad 4 reduces and motor and metal lower cover 11 area of contact, can effectively reduce resonance, improves whole machine noise, and second ventilation opening 231 communicates with second wind channel 111 through hollow structure 40, and mount pad 4 is along side surface equipartition hollow structure 40, and the cold air of being convenient for gets into inside the motor from the hollow position, increases heat exchange area, improves radiating efficiency.

According to the food processor provided by the utility model, through the circulating air duct which is internally arranged in the machine head and is communicated with the outside and the motor cavity 20, when the motor body in the motor cavity 20 works, outside air is directly replaced with air in the motor cavity 20, specifically, as shown by an arrow air duct in fig. 2, outside cold air is led by the air inlet formed by the handle 12, the second cavity 122, the second air duct 111, the communicating cavity 13 and the second air inlet 231, after the cold air passes through the motor cavity 20, under the high-speed displacement action of a fan in the motor 2, the cold air is discharged from the first air inlet 230, the diversion channel 32, the air collecting port 30, the first air duct 110 and the air outlet formed by the handle 12 to form effective circulation, so that the motor body is subjected to air cooling and heat dissipation, and the heat dissipation effect is improved; the hood-shaped wind collecting cover 3 arranged outside the first ventilation opening 230 of the motor casing 23 is used for collecting hot air in the motor inner cavity 20, guaranteeing that air outlet is concentrated, lifting wind pressure, discharging hot air to the outside through the wind collecting opening 30 and the first air duct 110 after air concentration, namely, enabling the hot air to be in non-contact with the newly-entered cold air, enabling air paths corresponding to the cold air and the hot air to be mutually independent, avoiding the temperature of the cold air from being influenced by hot air backflow, and accordingly improving the air cooling effect.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The description as it relates to "first", "second", etc. in the present utility model is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

The technical solution protected by the present utility model is not limited to the above embodiments, and it should be noted that the combination of the technical solution of any one embodiment with the technical solution of other one or more embodiments is within the scope of the present utility model. While the utility model has been described in detail in the general context and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (10)

1. The utility model provides a good food processing machine dispels heat, includes the cup and sets up the aircraft nose in the cup top, the aircraft nose is equipped with the motor, the motor is including the motor casing that has motor inner chamber, set up stator and the rotor shaft in the motor inner chamber, the rotor shaft certainly the lower extreme of motor casing stretches out and connects crushing sword, its characterized in that, the aircraft nose is equipped with and is used for with the circulation wind channel of motor inner chamber and external intercommunication, the circulation wind channel includes first wind channel and the second wind channel that communicates with the external respectively, the lower part of motor casing set up with the second ventilation opening of second wind channel intercommunication, the upper portion of motor casing is equipped with first vent and covers the form and be in the collection fan housing in the outside of first vent, the collection fan housing be equipped with first wind channel butt joint complex collection wind gap, the motor inner chamber pass through collection fan housing with first wind channel intercommunication.

2. The food processor of claim 1, wherein the air collection cover comprises a shroud surrounding the motor casing and a diversion channel protruding laterally from the shroud, the diversion channel is communicated with the first ventilation opening and extends towards the first air duct, and an outlet of the diversion channel forms the air collection opening.

3. A food processor according to claim 1 or 2, wherein the handpiece is provided with a communication cavity surrounding the motor housing and the outside of the air collection cover, and the second air duct is located at the upper part of the handpiece and is communicated with the second air vent through the communication cavity;

alternatively, the second air duct extends to interface with the second air vent.

4. The food processor of claim 1, wherein the first vent is formed in an end surface or a side surface of the motor casing; or the second ventilation opening is formed in the end face or the side face of the motor casing.

5. The food processor with good heat dissipation according to claim 1, further comprising a mounting base, wherein the lower end of the motor casing is fixedly connected with the machine head through the mounting base, and the mounting base is provided with a hollowed-out structure.

6. The food processor of claim 5, wherein the second vent is in communication with the second air duct through the hollowed-out structure.

7. The well-cooled food processor of claim 1, wherein the motor further comprises a first fan and a second fan, each driven by the rotor shaft and spaced axially along the motor.

8. The food processor of claim 7, wherein the first fan is a centrifugal fan, and the first ventilation opening is formed in a side surface of the motor casing and corresponds to the centrifugal fan in a transverse direction;

and/or the second fan is an axial flow fan, the second air vent is formed in the end face of the motor casing, and the axial flow fan corresponds to the second air vent vertically;

and/or, the first fan is close to the first ventilation opening, the second fan is close to the second ventilation opening, the second fan is arranged inside the motor casing, and the first fan is arranged inside or outside the motor casing.

9. The food processor with good heat dissipation according to claim 1, wherein the machine head comprises an upper cover, a lower cover and a handle convexly arranged on the upper cover, the upper cover and the lower cover enclose a mounting cavity for mounting the motor, the handle is hollow and provided with a blocking rib, the blocking rib divides the handle into a first cavity and a second cavity, and the first air duct and the second air duct are positioned in the mounting cavity and are respectively communicated with the outside through the first cavity and the second cavity.

10. The food processor of claim 1, wherein the first air duct and the second air duct are symmetrically arranged at the upper part of the machine head;

or the machine head comprises an upper cover and a lower cover, wherein the upper cover and the lower cover enclose a mounting cavity for mounting the motor, and the first air duct and/or the second air duct are integrally formed on the lower cover;

or, the aircraft nose includes upper cover and lower cover, the upper cover with the lower cover encloses into the installation cavity in order to install the motor, the lower cover is equipped with wind channel recess and covers and locates wind channel recess's apron, the apron with wind channel recess encloses into first wind channel or second wind channel.