CN207884438U - Motor, frame component and food cooking machine - Google Patents

Abstract

The utility model discloses a motor, a frame assembly and a food cooking machine, wherein the motor includes: a stator assembly, the stator assembly includes a casing, the casing is in the shape of a cylinder with one end open and the other end closed; a rear end cover assembly, fixedly connected with the casing and sealed at the opening of the casing; rotor assembly, the rotor assembly is installed in the stator assembly, the rotor assembly includes a rotating shaft, the One end of the rotating shaft runs through the rear end cover assembly, and the other end protrudes from the casing; and a fan, the fan is accommodated in the casing and fixedly sleeved on the rotating shaft, and the casing is adjacent to the casing. An air outlet is provided at the fan. The motor of the utility model has the advantages of compact structure, convenient assembly and good heat dissipation effect.

Description

Motor, base assembly and food processor

technical field

The utility model relates to the technical field of cooking machines, in particular to a motor, a base assembly using the motor, and a food cooking machine using the base assembly.

Background technique

In order to meet the requirement of high rotational speed, the existing integrated motors with impellers generally have a complicated structure, which makes the motors larger in size, more in parts and inconvenient to assemble.

Utility model content

The main purpose of the utility model is to provide a motor, which aims at simplifying the structure of the motor and improving the heat dissipation effect of the motor.

In order to achieve the above object, the motor proposed by the utility model includes:

Stator assembly, the stator assembly includes a casing, the casing is in the shape of a cylinder with one end open and the other end closed;

The rear end cover assembly is fixedly connected with the casing and sealed at the opening of the casing;

a rotor assembly, the rotor assembly passes through the stator assembly, the rotor assembly includes a rotating shaft, one end of the rotating shaft passes through the rear end cover assembly, and the other end protrudes from the casing; and

a fan, the fan is accommodated in the casing and fixedly sleeved on the rotating shaft; wherein

A heat dissipation air passage is formed between the stator assembly and the rotor assembly, the rear end cover assembly is provided with a first air inlet communicating with the heat dissipation air passage, and the casing is provided near the fan. There are air outlets.

Optionally, the casing includes a bottom wall and a side wall, the bottom wall and the side wall are enclosed in a cylindrical shape and have an integral structure, one end of the rotating shaft passes through the bottom wall, and the side wall is provided with the air outlet.

Optionally, an end of the side wall close to the rear end cover assembly is further provided with a second air inlet connected to the heat dissipation air duct.

Optionally, the fan is located at an end of the rotating shaft close to the bottom wall.

Optionally, the distance d1 between the fan and the bottom wall ranges from 3mm to 12mm.

Optionally, the distance d2 between the fan and the side wall ranges from 2mm to 8mm.

Optionally, the fan includes a mounting portion and a plurality of fan blades fixedly connected to the outer wall of the mounting portion, the mounting portion is fixedly sleeved on the rotating shaft, and the plurality of fan blades are radially and evenly spaced, Each of the fan blades is in the shape of a flat plate with uniform thickness, and the end of the fan blade away from the installation part faces the air outlet.

Optionally, the axially extending dimension of each fan blade is defined as the height of the fan blade, and the height of the fan blade gradually increases from an end close to the installation part to an end far away from the installation part.

Optionally, the height of each fan blade away from the installation part is h1, and the height of the air outlet is h2, wherein h1≤h2.

Optionally, there are multiple air outlets, and the multiple air outlets are evenly spaced in the circumferential direction of the casing.

Optionally, the stator assembly further includes a permanent magnet assembly arranged in the casing, the permanent magnet assembly is fixedly connected to the inner wall surface of the side wall, and the inner wall of the side wall faces inwardly to form a There is a stopper, and one end of the permanent magnet assembly close to the fan abuts against the stopper.

Optionally, the motor further includes two bearings, the rear end cover assembly and the bottom wall are recessed to form installation grooves, the two ends of the rotating shaft respectively pass through the bottom walls of the two installation grooves, and one of the The bearing is accommodated in one of the installation grooves and sleeved on the rotating shaft.

The utility model also proposes a machine base assembly, including a machine base shell and a motor fixed in the machine base shell, and the motor is the motor as described above.

The utility model also proposes a food cooking machine, including a machine base assembly and a stirring cup assembly installed on the machine base assembly, the machine base assembly is the above machine base assembly, and the stirring cup assembly has a stirring knife , the stirring knife is connected with the rotating shaft of the motor.

The technical scheme of the utility model integrates a fan with the motor and arranges the fan inside the casing, and the fan is fixedly connected with the rotating shaft, so that the fan is hidden in the casing, and during the operation of the motor, the fan can move the motor under the drive of the rotating shaft. The heat generated is quickly discharged from the air outlet, which meets the needs of high-speed rotation of the motor when it is applied to products such as food processors and soybean milk machines. During the manufacturing process, parts such as the stator assembly and rotor assembly of the motor can be inserted and assembled through the opening, the motor assembly process is more convenient, and the design of the rear end cover assembly at both ends of the existing motor is reduced, so that the number of motor parts is also reduced. The structure of the motor is simplified, and the manufacturing cost of the motor is also reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is the sectional structure schematic diagram of an embodiment of the electric motor of the present utility model;

FIG. 2 is a schematic diagram of an exploded structure of the motor in FIG. 1 .

Explanation of reference numbers:

label name label name 800 motor 350 armature winding 700 Carbon brush assembly 200 rear cover assembly 600 commutator 200a, 113a mounting slot 500 bearing 100 Stator assembly 400 fan 110 chassis 420 Installation department 111 side wall 440 fan blade 111a air outlet 300 Rotor assembly 111b Resistance 310 shaft 113 bottom wall 330 Rotor core 130 Permanent magnet components

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In this utility model, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integration; It may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In addition, in the present application, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

The utility model proposes a motor 800 .

Please refer to Fig. 1 and Fig. 2 together. In the embodiment of the present utility model, the motor 800 includes: a stator assembly 100, a rear end cover assembly 200, a rotor assembly 300, a fan 400, a commutator 600, and carbon brushes Component 700.

Among them, the stator assembly 100 includes a casing 110, the casing 110 is in a cylindrical shape with one end open and the other end closed; the rear end cover assembly 200 is fixedly connected with the casing 110 and sealed at the opening of the casing 110; the rotor assembly 300 is installed in the stator assembly 100, the rotor assembly 300 includes a shaft 310, one end of the shaft 310 runs through the rear end cover assembly 200, and the other end protrudes from the casing 110, the commutator 600 and the carbon brush assembly 700 are located in the rear end cover The assembly 200 and the casing 110 are sleeved on the outside of the rotating shaft 310. The rotor assembly 300 also includes a rotor core 330 fixedly connected to the rotating shaft 310, wherein the armature winding 350 is wound on the rotor core 330, and the fan 400 Accommodated in the casing 110 and fixedly sleeved on the rotating shaft 310, a heat dissipation air passage f is formed between the stator assembly 100 and the rotor assembly 300, and the rear end cover assembly 200 is provided with a first connecting passage f to the heat dissipation air passage f. An air inlet 200c, the casing 110 is provided with an air outlet 111a adjacent to the fan 400 .

The cross-sectional shape of the casing 110 of the present application may be circular or square, and of course the shape of the casing 110 may also be designed according to the actual application environment of the motor 800 . The chassis 110 may be formed of zinc and may be produced by compression molding. Since zinc is an acoustically insensitive material, the casing 110 can effectively absorb the sound noise during the operation of the motor 800 . The casing 110 includes a cylindrical bottom wall 113 and a side wall 111, wherein the bottom wall 113 may be provided with a connection hole (not marked), and the fan 400 is fixed to the rotating shaft of the rotor assembly 300 during the assembly process of the motor 800 After 310, insert and pass through the stator assembly 100 through the opening of the casing 110, wherein the stator assembly 100 also includes a permanent magnet assembly 130 disposed in the casing 110, and the permanent magnet assembly 130 is fixedly connected to the inner wall surface of the side wall 111 , the permanent magnet assembly 130 is cylindrical. After the rotor assembly 300 is inserted, the rotor core 330 wound with the armature winding 350 is located inside the permanent magnet assembly 130. In order to realize the fixed positioning of the permanent magnet assembly 130 to facilitate its For installation, the inner wall of the side wall 111 of the present application protrudes inwardly to form a stop portion 111b, and one end of the permanent magnet assembly 130 close to the fan 400 abuts against the stop portion 111b. The stop portion 111b is used to abut and stop, making the positioning more convenient during the insertion and assembly process, and the permanent magnet assembly and the inner wall surface of the side wall 111 can be further fixedly connected by gluing. Next, install the carbon brush assembly 700 and the commutator 600 and other components. A longer bolt can be inserted between the rear end cover assembly 200 and the casing 110 through the connecting hole and threaded with the rear end cover assembly 200. The locking connection between the rear end cover assembly 200 and the casing 110 is realized, so that the fast assembly of the motor 800 is realized. When the motor is powered on, the external current is conducted to the armature winding 350 through the carbon brush assembly 700, and the rotor assembly 300 and the stator assembly 100 are under the action of the magnetic field, so that the rotor assembly 300 rotates around the rotating shaft 310, because the fan 400 If it is fixed on the rotating shaft 310, the fan 400 rotates with the rotating shaft 310. The motor 800 of the present application forms a cooling air duct f inside, and an air inlet (not marked) can also be provided on the casing 110 or the rear end cover assembly 200 ), so that during the high-speed operation of the motor 800, when the fan 400 is driven by the rotating shaft 310 to run synchronously, the air outside the motor 800 is sucked in through the air inlet and absorbs the heat generated by the motor 800 in the cooling air duct f and is discharged through the air outlet 111a .

The technical solution of the utility model integrates the fan 400 with the motor 800 and sets the fan 400 inside the casing 110. During the operation of the motor 800, the fan 400 can transfer the heat generated by the motor 800 through the air outlet under the drive of the rotating shaft 310. 111a is quickly discharged to meet the high-speed rotation requirements of the motor 800 when it is applied to products such as food processors and soybean milk makers. At the same time, the structural design of the cylindrical casing 110 with one end open and the other closed end of the casing 110 enables the production of the motor 800. During the process, parts such as the stator assembly 100 and the rotor assembly of the motor 800 can be inserted and assembled through the opening, the assembly process of the motor 800 is more convenient, and the design of the rear end cover assembly at both ends of the existing motor 800 is reduced, making the motor 800 zero The number of components is also reduced, which simplifies the structure of the motor 800 and also reduces the manufacturing cost of the motor 800 .

In order to make the motor 800 run more smoothly, the motor 800 of the present application also includes two bearings 500, the rear end cover assembly 200 and the bottom wall 113 are recessed to form a mounting groove 200a, and the two ends of the rotating shaft 310 respectively penetrate through the bottom of the two mounting grooves 200a On the wall 113 , a bearing 500 is accommodated in a mounting groove 200 a and sleeved on the rotating shaft 310 . The bearing 500 includes an inner ring and an outer ring, wherein the outer ring is fixedly connected to the groove wall of the mounting groove 200a, and the inner ring and the rotating shaft 310 are in an interference fit. Of course, the mounting groove 200a on the rear end cover assembly 200 and the casing 110 should be It is set coaxially, so that after the motor 800 is assembled, there will be less jumping and more stability during rotation.

Further, the bottom wall 113 and the side wall 111 of the casing 110 are integrally structured, one end of the rotating shaft 310 runs through the bottom wall 113 , and the side wall 111 is provided with an air outlet 111a. The fan 400 is located at an end of the rotating shaft 310 close to the bottom wall 113 .

After the fan 400 of the present application is installed on the rotating shaft 310, the fan 400 and the heat source in the rotor assembly 300, that is, the rotor core 330 (the rotor core 330 cuts the magnetic induction line in a magnetic environment to convert part of the magnetic field potential energy into heat energy) has a certain In this way, during the high-speed operation of the motor 800, the fan 400 will not be deformed or even fall off due to the heat of the rotor core 330, so that the continuous normal operation of the motor 800 can be ensured. On the side wall 111, an air outlet 111a is provided, so that during the operation of the motor 800, the air flow of heat dissipation flows out from the radial direction of the motor 800 (wherein the axial direction of the rotating shaft 310 is the axial direction of the motor 800, and the direction perpendicular to the axial direction is The direction is radial), and the air outlet 111a is set so that when the motor 800 of the present application is applied to products such as soybean milk machines and wall breaking machines, the air outlet of the motor 800 will not face the support of the soybean milk machine or the wall breaking machine On the other hand, during long-term use, the air outlet 111a is not easily blocked by foreign matter such as dust, so that the long-term continuous operation of the machine can be ensured. At the same time, in some usage environments, the structural design of the radial air outlet 111a also makes it easier to design the structure of the air path when the motor 800 is applied to products such as wall breakers and soybean milk makers.

It can be understood that the fan 400 can also be installed at the end of the rotating shaft 310 close to the rear end cover assembly 200, and correspondingly, the positions of the air inlet and the air outlet 111a will be changed accordingly, which will not be repeated here.

Preferably, the distance d1 between the fan 400 and the bottom wall 113 ranges from 3 mm to 12 mm.

The cooling airflow in the motor 800 of this application passes through the action of the fan 400, and after passing through the axially extending air duct, it changes direction and is discharged through the air outlet 111a. If the distance d1 between the fan 400 and the bottom wall 113 is too small, the motor 800 During long-term use, due to aging and deformation of the fan 400 , interference between the fan 400 and the bottom wall 113 is likely to occur, which is not conducive to maintaining a stable structure of the motor 800 . And when the distance d1 between the fan 400 and the bottom wall 113 is too large, then part of the air flow tends to stay in the space between the fan 400 and the bottom wall 113, which is not conducive to the smooth exhaust of the inside of the motor 800. The distance d1 between the 400 and the bottom wall 113 ranges from 3mm to 12mm, which takes into account the dual characteristics of the motor 800 having a stable structure and a good exhaust effect.

In this application, on the basis that the fan 400 has the characteristics of the above-mentioned installation structure, in order to further improve the heat dissipation effect of the motor 800, the fan 400 also has the following characteristics. A fan blade 440, the installation part 420 is fixedly sleeved on the rotating shaft 310, a plurality of fan blades 440 are radially and evenly spaced, and each fan blade 440 is in the shape of a flat plate with uniform thickness, and the fan blade 440 is far away from one side of the installation part 420 The end is facing the air outlet 111a.

The installation part 420 of the fan 400 of the present application and a plurality of fan blades 440 are integrally constructed, and the material thereof may be plastic or metal, such as aluminum alloy. The mounting part 420 and the rotating shaft 310 are fitted with a shaft hole and are fixed together. During the operation of the motor 800 , the fan 400 and the rotating shaft 310 will not move on the rotating shaft 310 . In the present application, the radially extending lengths of the plurality of fan blades 440 are consistent. Of course, the radially extending lengths of the plurality of fan blades 440 may also be inconsistent. In this application, each fan blade 440 is designed as a flat plate with uniform thickness, and the end surface of the fan blade 440 away from the installation part 420 extends in the axial direction to face the air outlet 111a. The blades 440 stir the airflow so that the airflow is quickly discharged along the surface of the fan blades 440 through the air outlet 111a, so that the heat dissipation effect is better. It should be noted that the fact that the fan blade 440 of the present application is in the shape of a flat plate should be understood as the opposite two board surfaces of the fan blade 440 are planes parallel to each other, and especially refers to the front surface and the rear surface in the direction of rotation when the fan 440 rotates. for the plane.

Further, the distance d2 between the fan 400 and the side wall 111 ranges from 2 mm to 8 mm. The fan 400 can generate a greater suction effect inside the motor during the rotation process, so that the wind force is stronger during the exhaust process, and the heat dissipation efficiency is higher. When d2 is too small, the fan 400 is easy to touch the side wall during operation Causes interference and crashes. When d2 is too large, the suction force generated by the fan 400 during operation is too small, which is not conducive to exhaust. The range of d2 in this application is between 2mm and 8mm, and the fastening operation is stable and the exhaust effect is good. specialty.

Further, the axially extending dimension of each fan blade 440 is defined as the height of the fan blade 440 , and the height of the fan blade 440 gradually increases from an end close to the installation part 420 to an end far away from the installation part 420 . The fan 400 of the present application has a flat plate structure, and the height of the axial extension of the fan blades 440 is designed as above, so that each fan blade 440 is roughly trapezoidal in shape, especially an isosceles trapezoidal shape. The height of 440 is gradually set from one end close to the installation part 420 to one end away from the installation part 420, so that during the high-speed operation of the fan 400, it is not easy to generate eddy currents at the position (that is, the root) of the fan blade 440 close to the installation part 420, so The overall cooling effect of the fan 400 on the motor 800 can be improved. And less noise.

Further, the height of each fan blade 440 away from the installation portion 420 is h1, and the height of the air outlet 111a is h2, wherein h1≤h2. In this application, the end of each fan blade 440 far away from the installation part 420 is located in the height region where the air outlet is located. At the same time, h1≤h2, so that when the fan blade 440 rotates, the driving air flow is directly directed to the air outlet 111a in the radial direction, and the air outlet efficiency is relatively high. high.

In this application, in order to cooperate with the fan 400 to achieve the best heat dissipation effect, multiple air outlets 111 a are provided, and the multiple air outlets 111 a are evenly spaced in the circumferential direction of the casing 110 .

During the heat dissipation process of the motor 800 of the present application, the air outlet direction is radial, and the air outlet 111a is arranged on the side wall 111 of the casing 110, so that the air outlet 111a has a large design space. Most of the existing motors 800 have an air outlet direction of In the axial direction, the position of the air outlet is the rear end cover assembly 200, and the installation process of the rotating shaft 310 will also occupy a certain space, so the actual air outlet range is not too large. Evenly spaced circumferentially, the fan 400 will not be affected by the rotating shaft 310 during the air outlet process, and the air outlet area is larger, so that the heat dissipation effect is improved.

To sum up, the motor 800 of the present application, through the integrated casing 110 structure, is more convenient to insert and assemble the parts of the motor 800. At the same time, a fan for heat dissipation is sleeved and fixed in the casing 110 and on the rotating shaft 310. 400, the fan 400 and the motor 800 are integrated, so that the entire motor 800 has a compact structure, and the overall cost is reduced, and an air outlet 111a corresponding to the fan 400 is further provided on the side wall 111 of the casing 110, so that during the operation of the motor 800, The heat generated inside is quickly discharged from the air outlet 111a, and because the air outlet 111a is opened on the side wall 111, the motor 800 is radially exhausted during the heat dissipation process, so that it has a larger effective air outlet area and a better heat dissipation effect. Good, and the air outlet 111a is opened on the side wall. During long-term use, the air outlet 111a is not easy to be blocked by foreign objects such as dust, so that the long-term continuous operation of the machine can be ensured.

The utility model also proposes a machine base assembly, including a machine base shell and a motor 800 fixed in the machine base shell. An electric food processor with high-speed stirring, wherein the motor 800 can have two functions, one is used to drive the stirring shaft of the electric food processor, and on the other hand, it can also be connected with an exhaust fan 400 to drive the inside of the base shell. air flow. The specific structure of the motor 800 refers to the above-mentioned embodiments. Since this base assembly adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. repeat.

The present application also proposes a food cooking machine. The food cooking machine includes a base assembly and a stirring cup assembly mounted on the base assembly, wherein the stirring cup assembly has a stirring knife inside, and the stirring knife is in transmission connection with the rotating shaft 310 of the motor 800 . Wherein, the specific structure of the machine base assembly refers to the above-mentioned embodiments. Since this machine base assembly adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments. Let me repeat them one by one.

The food cooking machine of the present application can be electric food processing machines such as soybean milk machine, juice extractor, wall breaker. Wherein, a wind deflector structure can also be arranged in the machine base assembly, one end of the output shaft of the motor 800 is connected to the cutter shaft of the mixing knife, and the other end is connected with a row of fans 400, and by accommodating the motor 800 in the wind deflector, the exhaust fan 400 and The rotating shaft 310 of the motor 800 rotates synchronously, and achieves a suction effect on the air in the base assembly, so that the heat generated by the electronic components in the food cooking machine can be effectively discharged from the housing of the base, ensuring the continuous and effective operation of the food cooking machine .

The above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Under the inventive concept of the utility model, the equivalent structural transformation made by using the specification of the utility model and the contents of the accompanying drawings, or Direct/indirect application in other relevant technical fields is included in the patent protection scope of the present utility model.

Claims (14)

1. a kind of motor, which is characterized in that including：

Field frame assembly, the field frame assembly include casing, and the casing is in the closed tubular of the one end open other end；

Rear end cap assembly is fixedly connected with the casing and is covered in the opening of the casing；

Rotor assembly, the rotor assembly are arranged in the field frame assembly, and the rotor assembly includes shaft, described shaft one end Through the rear end cap assembly, the other end is stretched out by the casing；And

Fan, the fan is placed in the casing and fixing sleeve is set to the shaft；Wherein

Heat dissipation wind channel is formed between the field frame assembly and the rotor assembly, the rear end cap assembly offers described in connection First air inlet of heat dissipation wind channel, the casing, which closes at the fan, offers air outlet.

2. motor as described in claim 1, which is characterized in that the casing includes bottom wall and side wall, the bottom wall and side wall Enclosing is cylindrical in shape and is structure as a whole, and the bottom wall is run through in described shaft one end, and the side wall offers the air outlet.

3. motor as claimed in claim 2, which is characterized in that the side wall is also opened up close to one end of the rear end cap assembly There is the second air inlet for being connected to the heat dissipation wind channel.

4. motor as claimed in claim 2, which is characterized in that the fan is located at the shaft close to the one of the bottom wall End.

5. motor as claimed in claim 4, which is characterized in that the spacing d1 between the fan and the bottom wall is ranging from 3mm to 12mm.

6. motor as claimed in claim 4, which is characterized in that the spacing d2 between the fan and the side wall is ranging from 2mm to 8mm.

7. the motor as described in any one of claim 2 to 6, which is characterized in that the fan include mounting portion and with Multiple flabellums that the outer wall of the mounting portion is fixedly connected, the mounting portion fixing sleeve are set to the shaft, multiple flabellums It is radially evenly spaced on, each flabellum is in the uniform one end of tabular and flabellum far from the mounting portion of thickness Close to the air outlet.

8. motor as claimed in claim 7, which is characterized in that it is fan to define the size that each flabellum is upwardly extended in axis The height of leaf, the height of the flabellum close to one end of the mounting portion to one end far from the mounting portion by gradually increasing.

9. motor as claimed in claim 8, which is characterized in that the height of each one end of the flabellum far from the mounting portion Height for h1, the air outlet is h2, wherein h1≤h2.

10. motor as claimed in claim 7, which is characterized in that the air outlet offer it is multiple, multiple air outlets in The circumferential uniform intervals of the casing are arranged.

11. the motor as described in any one of claim 2 to 6, which is characterized in that the field frame assembly further includes being set to institute State the permanent-magnet component in casing, the permanent-magnet component is fixedly connected on the internal face of the side wall, the inner wall of the side wall towards Interior projection is formed with stopper section, and the permanent-magnet component abuts the stopper section close to one end of the fan.

12. motor as claimed in claim 2, which is characterized in that the motor further includes two bearings, the rear end cap assembly and The bottom wall is recessed to be formed with mounting groove, and the both ends of the shaft extend through the bottom wall of two mounting grooves, and a bearing holds It is placed in a mounting groove and is sheathed on shaft.

13. a kind of frame component, including machine base outer shell and the motor that is fixed in the machine base outer shell, which is characterized in that institute It is the motor as described in any one of claim 1 to 12 to state motor.

14. a kind of food cooking machine, including frame component and the stirring cup assembly for being installed on the frame component, feature exist In the frame component is frame component as claimed in claim 13, has stirring blade in the stirring cup assembly, described to stir Knife is mixed to connect with the rotating shaft transmission of the motor.