CN207939356U - Food cooking machine and its power supply circuit - Google Patents

Abstract

The utility model discloses a kind of food cooking machine and its power supply circuits, wherein power supply circuit includes：AC power is converted to DC power supply by rectifier bridge；Electrolytic capacitor, the positive terminal of electrolytic capacitor is connected with the first output end of rectifier bridge, negative pole end is connected with the second output terminal of rectifier bridge is followed by reference ground, the both ends of electrolytic capacitor are also associated with motor control panel, to carry out steady pressure treatment to DC power supply, and by the direct-current power supply motor control panel after steady pressure treatment, to be controlled driving motor by motor control panel；Magnet ring, on the connecting line that magnet ring is arranged between motor control panel and driving motor, magnet ring is to inhibit the high-frequency noise generated in the food cooking machine course of work, to ensure that normal drive signal is applied on driving motor so that driving motor being capable of stable operation.

Description

Food cooking machine and its power supply circuit

Technical field

The utility model is related to household electrical appliance technical field, more particularly to the power supply circuit and one kind of a kind of food cooking machine Food cooking machine.

Background technology

Cooking machine be integrate beat soya-bean milk, mill dry powder, squeezed juice, beat the functions such as meat stuffing, water ice, for make fruit juice, The household electrical appliance of the numerous foods such as soya-bean milk, jam, dry powder, water ice, meat stuffing, which are juice extractors, to be become to compare the product after diversification. In general, cooking machine is to be run at high speed by controlling motor to break the cell wall of food, so that the nutrition of food is able to Fully release, thus receive user's favor.

Under normal circumstances, the internal structure of motor is triangle or star-like connection, and output interface line is at least three, by It is high voltage, high-frequency square-wave signal in the drive signal of motor, thus can be generated on three output interface lines around signal, To generate interference to circuit signal.

Utility model content

The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality It is to propose a kind of power supply circuit of food cooking machine with first novel purpose, effectively food cooking machine can be inhibited to work The high-frequency noise generated in the process, to ensure that normal drive signal is applied on driving motor so that driving motor can Stable operation.

Second purpose of the utility model is to propose a kind of food cooking machine.

To achieve the above object, the utility model first aspect proposes a kind of power supply circuit of food cooking machine, described Food cooking machine includes cooking container, driving motor and the Food processing part for being handled food, the cooking container It is inside formed with the food accommodating chamber for holding food, the Food processing part stretches into the food accommodating chamber and in the drive It is rotated relative to the cooking container under the drive of dynamic motor, the power supply circuit includes：Rectifier bridge, the first of the rectifier bridge Input terminal is connected to the firewire of the AC power of input, and the second input terminal of the rectifier bridge is connected to the zero of the AC power The AC power is converted to DC power supply by line, the rectifier bridge；Electrolytic capacitor, the positive terminal of the electrolytic capacitor with it is described First output end of rectifier bridge is connected, and the negative pole end of the electrolytic capacitor is connected with the second output terminal of the rectifier bridge to be followed by joining Ground is examined, the both ends of the electrolytic capacitor are also associated with motor control panel, and the motor control panel is connected with the driving motor, institute Electrolytic capacitor is stated to carry out steady pressure treatment to the DC power supply, and by motor described in the direct-current power supply after steady pressure treatment Control panel, to be controlled the driving motor by the motor control panel；Magnet ring, the magnet ring are arranged in the motor On connecting line between control panel and the driving motor, the magnet ring is inhibiting to produce in the food cooking machine course of work Raw high-frequency noise.

The power supply circuit of food cooking machine according to the present utility model, by between motor control panel and driving motor Magnet ring is set on connecting line, the high-frequency noise for inhibiting to generate in the food cooking machine course of work by the magnet ring, so as to protect It demonstrate,proves normal drive signal to be applied on driving motor so that driving motor being capable of stable operation.

In addition, can also have following additional technology according to the power supply circuit of the above-mentioned food cooking machine of the utility model Feature：

Specifically, the driving motor includes three-phase windings, and the three-phase windings are using logical after the connection of star-like or triangle Cross the Wiring port that extended line is connected to the motor control panel.

Further, the extended line is arranged across the magnet ring.

Further, the extended line is at least enclosed around the magnet ring one.

Specifically, the driving motor is DC brushless motor.

Specifically, the capacitance of the electrolytic capacitor is 400uf-1000uf.

Further, the capacitance of the electrolytic capacitor is 860uf.

Specifically, the food cooking machine is blender, wall-breaking machine, Normal juice machine or juice extractor.

To achieve the above object, the utility model second aspect proposes a kind of food cooking machine, including：Container is arranged, The food accommodating chamber for holding food is formed in the cooking container；Driving motor；Food for being handled food Product handling member, the Food processing part stretch into the food accommodating chamber and under the drive of the driving motor relative to described Arrange container rotation；The power supply circuit of above-mentioned food cooking machine.

Food cooking machine according to the present utility model can effectively inhibit food cooking machine by above-mentioned power supply circuit The high-frequency noise generated in the course of work, to ensure that normal drive signal is applied on driving motor so that driving motor It being capable of stable operation.

In addition, can also have following additional technical characteristic according to the above-mentioned food cooking machine of the utility model：

Specifically, the driving motor includes：Stator core, the stator core include the stator yoke and multiple of annular The width of stator teeth, the stator yoke is W, and multiple stator teeths are set to the inner peripheral surface of the stator yoke, adjacent Stator tooth socket is formed between two stator teeths, multiple stator teeths limit coaxial with the stator yoke Stator hole, each stator teeth include the stator teeth main body being connected with the stator yoke and are located at the stator teeth The width of the stator tooth boots of the inner end of main body, each stator teeth main body is V, wherein W：V=0.6-0.7；Rotor iron Core, the rotor core are rotatably arranged in the stator hole and coaxial with the stator hole.

Specifically, the driving motor includes：Stator core, the stator core include the stator yoke of annular and are set to Multiple stator teeths of the inner peripheral surface of the stator yoke are formed with stator tooth socket between the two neighboring stator teeth, more A stator teeth limits the stator hole coaxial with the stator yoke, and the maximum radial dimension of the stator yoke is D； Rotor core, the rotor core is rotatably arranged in the stator hole and, the rotor core coaxial with the stator hole Maximum radial dimension be d, wherein D and d meet：0.4≤d/D≤0.55.

Description of the drawings

Fig. 1 is the structural schematic diagram according to the food cooking machine of the utility model one embodiment；

Fig. 2 is the circuit diagram according to the power supply circuit of the food cooking machine of the utility model one embodiment；

Fig. 3 is the connection diagram of the driving motor and magnet ring according to the utility model one embodiment；

Fig. 4 is the assembling schematic diagram according to the rotor core of the stator core and motor of the utility model one embodiment；

Fig. 5 is the structural schematic diagram according to the rotor core of the motor of the utility model one embodiment；

Fig. 6 is the structural schematic diagram according to the rotor core of the motor of the utility model another embodiment.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

With reference to the accompanying drawings come describe the food cooking machine proposed according to the utility model embodiment power supply circuit and Food cooking machine.

As shown in Figure 1, the food cooking machine 200 according to the utility model embodiment may include：It arranges container 210, drive Dynamic motor 100 and the Food processing part (not shown) for being handled food, arrange and could be formed in container 210 Food accommodating chamber for holding food, Food processing part can stretch into food accommodating chamber and in the drive of driving motor 100 Under rotated relative to cooking container 210, and then the food in food accommodating chamber can be handled.

Further, food cooking machine 200 can also include engine base 220, and cooking container 210 can be cup body component, cup Body component is detachably arranged at engine base 220, in order to pick and place food and cleaned to cup body component.Driving motor 100 can be with It is installed on engine base 220, Food processing part can be the knife assembly being connected with cup body component, when cup body component is set to engine base 220, Driving motor 100 can be sequentially connected with knife assembly, and driving motor 100 can drive knife assembly relative to cup body component as a result, Rotation, so that knife assembly can carry out food the processing such as to cut.

Shown in Fig. 1, food cooking machine 200 can also include：Electric-control system 230 and display module 240.Its In, electric-control system 230 includes circuit board, and the power supply circuit and motor control panel of food cooking machine 200, electricity are provided on circuit board Road plate can be installed on engine base 220, and circuit board is electrically connected with driving motor 100 to control the work of driving motor 100.Display Component 240 can also be installed on engine base 220, and display module 240 can be electrically connected with electric-control system 230, display module 240 It is displayed for the working condition of food cooking machine 200, and in the further embodiment of the utility model, display group There can be operation button on part 240, user can control electric-control system 230 by operation button, and then control food cooking The operating mode of machine 200 and state etc., it is more convenient to use.

With reference to shown in Fig. 2, the power supply circuit 231 according to the food cooking machine 200 of the utility model embodiment includes：Rectification Bridge 2311, electrolytic capacitor 2312 and magnet ring 2313, wherein the first input end of rectifier bridge 2311 is connected to the AC power of input Firewire AC_L, the second input terminal of rectifier bridge 2311 is connected to the zero curve AC_N of AC power, and rectifier bridge 2311 is by alternating current Source is converted to DC power supply.The positive terminal of electrolytic capacitor 2312 is connected with the first output end of rectifier bridge 2311, electrolytic capacitor 2312 negative pole end is connected with the second output terminal of rectifier bridge 2311 is followed by reference ground GND, and the both ends of electrolytic capacitor 2312 also connect Be connected to motor control panel 232, motor control panel 232 is connected with driving motor 100, electrolytic capacitor 2312 to DC power supply into Row steady pressure treatment, and by the direct-current power supply motor control panel 232 after steady pressure treatment, with by motor control panel 232 to driving Dynamic motor 100 is controlled.Magnet ring 2313 is arranged on the connecting line between motor control panel 232 and driving motor 100, magnet ring 2313 inhibiting the high-frequency noise generated in 200 course of work of food cooking machine.

Specifically, after AC power accesses, rectifier bridge 2311 can be DC power supply (its voltage AC power rectification Can be 310V), which can charge to electrolytic capacitor 2312, until charging to the corresponding voltage of DC power supply (310V).When needing to control the work of driving motor 100, motor control panel 232 can be applied DC power supply in the form of PWM waveform It is added on driving motor 100, since the rotating speed of driving motor 100 in food cooking machine 200 is very high, so driving motor 100 Drive signal frequency it is also very high, this high voltage, high-frequency electric signal will produce radiation, to causing to do to circuit It disturbs, causes circuit unstable during the work time, while the interference can also impact entire power grid by power cord.Cause This, in the present invention, by the way that magnet ring 2313 is arranged on the connecting line between motor control panel 232 and driving motor 100, Effectively inhibit the high-frequency noise generated in 200 course of work of food cooking machine by the magnet ring 2313, thereby may be ensured that just Normal drive signal is applied on driving motor 100 so that driving motor 100 being capable of stable operation.

Further, as shown in figure 3, driving motor 100 may include that three-phase windings, three-phase windings use star-like or triangle The Wiring port 2321 of motor control panel 232 is connected to after connection by extended line.Wherein, extended line is set across magnet ring 2313 It sets, further, extended line is at least enclosed around magnet ring 2,313 1, can specifically be selected according to actual conditions around the number of turns, is had Body is not limited.

In some embodiments of the utility model, the capacitance of electrolytic capacitor 2312 is 400uf-1000uf, ordinary circumstance Under, the torsion of driving motor 100 is bigger, and the capacitance of electrolytic capacitor 2312 is bigger, can specifically select according to actual needs, example Such as, in the further embodiment of the utility model, the capacitance of electrolytic capacitor 2312 is 860uf.

Referring to Fig.1, shown in Fig. 4-Fig. 6, according to the driving motor for food cooking machine 200 of the utility model embodiment 100 may include：Stator core 10 and rotor core 20.Wherein, stator core 10 may include：Stator yoke 11 and multiple fixed Sub- teeth portion 12, stator yoke 11 can be annular, and multiple stator teeths 12 can be set to the inner peripheral surface of stator yoke 11, and more A stator teeth 12 can limit the stator hole 102 coaxial with stator yoke 11, and stator yoke 11 can be multiple stator tooths Portion 12 provides mechanical support, and 12 position of stator teeth is made to fix.Multiple stator teeths 12 can be between the circumferential direction of stator yoke 11 It is spaced, it could be formed with stator tooth socket 101 between two neighboring stator teeth 12, the winding 14 of driving motor 100 can be with It is wrapped in stator teeth 12 by stator tooth socket 101.

It should be noted that in the present invention, the quantity of stator teeth 12 can need flexibly according to actual conditions It is arranged, stator teeth 12 is six purposes for being given for example only explanation in Fig. 4, in other embodiments of the utility model, Stator teeth 12 or two, four or more, this is within the protection scope of the utility model.

In the related art, the yoke of driving motor stator is wide and the wide ratio of teeth portion does not have fixed value, usual ratio more For 0.4-0.6, stator yoke is made to undertake the iron loss of greater proportion, to reduce the fever Wen Sheng of stator teeth, but can bring and determine Sub- yoke portion temperature rises excessively high problem.If by driving motor a jacketed magnetically permeable shell solve the above problems, one The magnetic flux density for determining can to reduce stator yoke in degree, reduces the iron loss of stator yoke, but can increase material and technique at This.

And in the present invention, with reference to shown in Fig. 4, each stator teeth 12 may include：121 He of stator teeth main body Stator tooth boots 122.Wherein, stator teeth main body 121 is connected with stator yoke 11, makes stator teeth 12 and stator yoke 11 can be with It is connected as one.Stator tooth boots 122 are located at the inner end of stator teeth main body 121, can reduce stator teeth 12 and rotor core Air-gap reluctance between 20 improves Distribution of Magnetic Field.

In addition, the width of stator yoke 11 is W, the width of each stator teeth main body 121 is V.For etc. shapes determine Sub- iron core 10, i.e. mono- timings of maximum radial dimension D of stator core 10, if W：V is too small, then can lead to the magnetic flux of stator teeth 12 Density is excessively high, or even flux density saturation occurs, and in 10 course of work of stator core, the iron loss of stator teeth 12 is larger, fixed The temperature of sub- teeth portion 12 rises excessively high.Also, the stator tooth socket 101 between two neighboring stator teeth 12 is too small, two neighboring stator Teeth portion 12 is easy to form electromagnetic circuit, and then reduce the efficiency of stator core 10 apart from too short.If W：V is excessive, then it is fixed to cause The magnetic flux density in sub- yoke portion 11 is excessively high, or even flux density saturation occurs, in 10 course of work of stator core, stator yoke 11 Iron loss it is larger and temperature occur and rise excessively high phenomenon.

Therefore, in some embodiments of the utility model, the width W of stator yoke 11 and each stator teeth main body 121 width V can meet W：V=0.6-0.7, stator yoke 11 and stator teeth 12 can more reasonably distribute stator core 10 magnetic flux density prevents 10 local temperature rise's higher of stator core, keeps the Wen Sheng of stator core 10 more balanced, to improve stator 10 service life of iron core and security performance.For example, in some specific embodiments of the utility model, the width of stator yoke 11 The ratio W of W and the width V of stator teeth main body 121：V can be respectively 0.6,0.62,0.65,0.68 and 0.7 etc..

It should be noted that in the present invention, the width W of stator yoke 11 can be understood as the stator yoke of annular The width V of the distance between 11 inner peripheral surface and peripheral surface, stator teeth main body 121 can be understood as stator teeth main body 121 Two side the distance between circumferential along stator yoke 11.

In addition, the distance between the inner peripheral surface and peripheral surface of the stator yoke 11 of annular can be identical everywhere, and certainly, annular Stator yoke 11 inner peripheral surface and the distance between peripheral surface can also be not exactly the same, annular stator yoke 11 The distance between inner peripheral surface and peripheral surface can it is identical everywhere can not also be identical.But in the present invention, stator The width W of any position in yoke portion 11 and the width V of any position of stator teeth main body 121 meet W：V=0.6- 0.7。

According to the width of the stator yoke 11 of the stator core 10 for food cooking machine 200 of the utility model embodiment W and the width V of stator teeth main body 121 meet W：V=0.6-0.7, magnetic flux density distribution is more reasonable, and Wen Sheng is more balanced, has Conducive to raising service life and safety.It is further according to the utility model further to make the Wen Shenggeng of stator core 10 low Embodiment, the width W of stator yoke 11 and the width V of stator teeth main body 121 can further meet：W：V=0.64- 0.66。

Some embodiments according to the present utility model, as shown in figure 4, the width of stator yoke 11 can be equal everywhere, often The width of a stator teeth main body 121 can be equal everywhere, and in order to the mold design of 10 forming process of stator core, technique is more Add simple.

Further, with continued reference to shown in Fig. 4, stator yoke 11 can be Internal periphery and outer profile is circular annulus The structure of shape, stator yoke 11 is simple and convenient for molding.

In addition, the width bisector of each stator teeth main body 121 can pass through the center of stator hole 102, that is to say, that Each 121 radially extending along stator hole 102 of stator teeth main body is conducive to keep Distribution of Magnetic Field more symmetrical uniformly.

Further, with reference to shown in Fig. 4, in the circumferential direction of stator yoke 11, the both ends of stator tooth boots 122 can prolong respectively It stretches and exceeds stator teeth main body 121, the abutting end of two neighboring stator tooth boots 122 is spaced apart or connected.Thus, it is possible to opposing connection The winding 14 for being located at stator teeth 12 is fixed, and prevents winding 14 from being loosened by the inner end of stator teeth 12, and winding 14 is fixed more Add reliable.

Can also include multiple positioning protrusion 13, multiple positioning protrusion according to the stator core 10 of the utility model embodiment 13 can be along the circumferentially-spaced peripheral surface for being opened in stator yoke 11 of stator yoke 11, and each positioning protrusion 13 can edge Stator yoke 11 radially extends.As a result, when driving motor 100 is assembled, stator core 10 can pass through positioning protrusion 13 are positioned with the holder of driving motor 100, and driving motor 100 is made to assemble simpler convenience and accurate positioning.

It should be noted that the utility model the quantity of positioning protrusion 13 and installation position are not done it is specifically limited, for example, In specific embodiment as shown in Figure 4, the quantity of positioning protrusion 13 is equal with the quantity of stator teeth 12, and positioning protrusion 13 are arranged the peripheral surface in stator yoke 11 correspondingly with 12 position of stator teeth, are convenient for the mold design of stator core 10 And molding.In some unshowned embodiments of the utility model, the quantity of positioning protrusion 13 and position can also be with stators Teeth portion 12 does not correspond, it is only necessary to meet positioning protrusion 13 and be spaced apart the peripheral surface set on stator yoke 11 to realize to stator The requirement that iron core 10 positions.

Further, as shown in figure 4, rotor core 20 can be located in stator hole 102, and rotor core 20 can be with Stator hole 102 is coaxial.Rotor core 20 can be rotated about axis in stator hole 102, and rotor core 20 and stator hole Preset distance can be spaced apart between 102 inner peripheral surface, so that the rotation of rotor core 20 is more smooth.

As a result, after 14 circulating current of winding of driving motor 100, multiple stator teeths 12 can be made to form multipair magnetic pole, it is fixed Magnetic field is generated in sub-aperture 102, the rotor core 20 in stator hole 102 can be rotated about axis under the influence of a magnetic field, with Realize the conversion and output of electric energy.

In the related art, the root diameter of driving motor does not have fixed value, usually mostly 0.60- with stator diameter ratio 0.75, within this range, although driving motor can export larger torque, the high speed performance of driving motor is poor, and And the cogging torque of driving motor increases, driving motor easy tos produce vibration and larger noise.If by drive control Increase weak magnetic effect in the algorithm of circuit to solve the above problems, then can reduce the efficiency of driving motor.

And in the present invention, the maximum radial dimension D of the stator yoke 11 and maximum radial dimension d of rotor core 20 Meet 0.4≤d/D≤0.55.For example, in some specific embodiments of the utility model, the maximum radial ruler of stator yoke 11 The ratio d/D of very little D and the maximum radial dimension d of rotor core 20 can be respectively 0.45,0.48,0.51 and 0.54 etc..

For etc. shapes stator core 10, i.e. the timing of maximum radial dimension D mono- of stator yoke 11, when d/D is too small (when e.g., being less than 0.4), the maximum radial dimension d of rotor core 20 is too small, if 100 low speed of driving motor is run, for example, driving The rotating speed ＜ 5000rpm of dynamic motor 100, the load capacity of rotor core 20 is too small, drives under the operating mode loaded on an equal basis, maximum diameter The rotor core 20 too small to size d can seriously generate heat, and influence the normal operation of driving motor 100, reduces driving motor 100 and imitates Rate, in some instances it may even be possible to be damaged.When d/D it is excessive (e.g., be more than 0.55) when, the cogging torque of driving motor 100 can be caused to become larger, The rotary inertia of rotor core 20 becomes larger, if 100 high-speed cruising of driving motor, for example, the rotating speed ＞ of driving motor 100 When 10000rpm, driving motor 100 will produce vibration, and then generate larger noise, influence 100 performance of driving motor and user Use feeling.

Therefore, in some embodiments of the utility model, maximum radial dimension D and the rotor core 20 of stator yoke 11 Maximum radial dimension d can meet 0.4≤d/D≤0.55, the output of the rotor core 20 of driving motor 100 can be improved Power, driving motor 100 is more efficient, prevents rotor core 20 from generating heat, safer, and can be by the maximum of rotor core 20 Radial dimension d does the inertia small, rotor core 20 generates when eliminating high-speed rotation, prevents driving motor 100 from generating larger Vibrating noise.

In addition, it is necessary to explanation, in some embodiments of the utility model, stator core 10 and rotor core 20 Outer profile is circle, then maximum radial dimension refers to the diameter of the rounded outer profiles of stator core 10 and rotor core 20.And at this In other embodiments of utility model, the outer profile of stator core 10 and rotor core 20 is not circle, then maximum radial ruler The size of the maximum position of radial dimension for crossing axis of the very little outer profile that can be understood as stator core 10 and rotor core 20.

Most according to the stator yoke 11 of the driving motor 100 for food cooking machine 200 of the utility model embodiment Big radial direction dimension D and the maximum radial dimension d of rotor core 20 meet 0.4≤d/D≤0.55, efficiently solve driving motor 100 low speed power output is small and the big problem of vibration at high speed noise, improves the efficiency and security performance of driving motor 100.For Further increase driving motor 100 low speed power output and reduce driving motor 100 high speed noise, according to the utility model into The embodiment of one step, the maximum radial dimension D of stator yoke 11 can further expire with the maximum radial dimension d of rotor core 20 Foot：0.5≤d/D≤0.55.

Some embodiments according to the present utility model can be equipped with multiple magnets as shown in Figure 4-Figure 6 in rotor core 20 Slot 23, multiple magnet slots 23 can be along the circumferentially spaced setting of rotor core 20, and the both ends of magnet slot 23 can be distinguished The axial both ends of rotor core 20 are extended to, multiple permanent magnets 25 can be correspondingly plugged in multiple magnet slots 23.

Permanent magnet 25 can extend to the axial both ends of rotor core 20, the position of permanent magnet 25 in magnet slot 23 as a result, It is reliable to set fixation, permanent magnet 25 can be effectively prevent to loosen.And multiple permanent magnets 25 can form multipair magnetic pole, with production Magnetisation field, and then induced electromotive force is generated, realize the conversion of electric energy.Rotor core 20 using permanent magnet 25 is without being arranged excitation Coil not only improves the weight for mitigating driving motor 100, reduces the volume of driving motor 100, and is not necessarily to start on startup Excitation, startup is more quick, more energy saving.

It should be noted that the utility model the quantity of magnet slot 23 and permanent magnet 25 is not done it is specifically limited, it is only necessary to Meet multiple permanent magnets 25 to be plugged in correspondingly in multiple magnet slots 23 to realize the fixation of permanent magnet 25 and be formed multiple The requirement of magnetic pole.For example, in specific embodiment as shown in Figure 5 and Figure 6, magnet slot 23 and permanent magnet 25 are respectively four A, four permanent magnets 25 are plugged in respectively in four magnet slots 23.For another example in other embodiments of the utility model, Magnet slot 23 and permanent magnet 25 can also be respectively two, six, eight or more, this is all in the protection of the utility model Within the scope of.

In addition, each at least one end of magnet slot 23 in the circumferential direction of rotor core 20 can be equipped with locating slot 24, permanent magnetism Locating slot 24 can be inserted while being inserted into magnet slot 23 in body 25, and locating slot 24 can further limit the position of permanent magnet 25 It sets, so that 25 position of permanent magnet is fixed more accurate secured.

Further, as shown in Figure 5 and Figure 6, the straight line at both ends of each magnet slot 23 in the circumferential direction of rotor core 20 Distance is b, and the maximum radial distance of the peripheral surface of the centre distance rotor core 20 of rotor core 20 is R, and b and R meets b:R=0.95-1.0.Work as b:When R ＜ 0.95, the length of permanent magnet 25 is too short in magnet slot 23, reduces the utilization of rotor core 20 Rate, to reduce the efficiency of driving motor 100；Work as b:When R ＞ 1, the leakage field of rotor core 20 is will increase, can also reduce driving The efficiency of motor 100.Therefore, in some embodiments of the utility model, b:When R=0.95-1.0, for example, new in this practicality In some specific embodiments of type, b:R can be respectively 0.95,0.96,0.97,0.98,0.99 and 1.0 etc., be effectively ensured The efficiency of driving motor 100.

Some embodiments according to the present utility model, as shown in Figure 5 and Figure 6, the periphery of magnet slot 23 and rotor core 20 The minimum range in face is a1, and the minimum range of the peripheral surface of stator slot 24 and rotor core 20 is a2, permanent magnet 25 and rotor iron The minimum range of the peripheral surface of core 20 can be understood as one smaller value in a1 and a2, i.e. min (a1, a2).Min (a1, A2 when) too small, the mechanical strength of rotor core 20 can be made to reduce, to reduce the reliability of rotor core 20；And min (a1, A2 when) excessive, the leakage field of rotor core 20 can be increased, thereby reduce the efficiency of driving motor 100.Therefore, new in this practicality In some embodiments of type, min (a1, a2)=0.8mm-1.8mm, while ensure that the mechanical strength and energy of rotor core 20 Effect.For example, in some specific embodiments of the utility model, min (a1, a2) can be respectively 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm and 1.8mm etc..

In addition, the utility model the shape of magnet slot 23 is not done it is specifically limited, it is only necessary to meet the length of magnet slot 23 The bisector in direction makes the Distribution of Magnetic Field that permanent magnet 25 generates in magnet slot 23 by the requirement at the center of rotor core 20 More uniformly.For example, in example as shown in Figure 5, magnet slot 23 is the straight-line groove of strip, and straight-line groove is along rotor core 20 String direction extend, the distance b at the both ends of straight-line groove is the development length of straight-line groove.In the example shown in fig. 6, magnetic Body slot 23 is the arc groove of strip, and for arc groove along the circumferentially extending of rotor core 20, the distance b at the both ends of arc groove is arc The chord length of shape slot.

In some embodiments of the utility model, as shown in Figure 5 and Figure 6, the outer periphery of rotor core 20 can be formed Have multiple pole teeth 21, multiple pole teeth 21 along the circumferentially distributed of rotor core 20 and can outwardly protrude, two neighboring pole tooth 21 it Between be formed with tooth socket 22, also, in the embodiment with multiple magnet slots 23, magnet slot 23 can be corresponded with pole tooth 21 Setting.At this point, rotor core 20 is formed as salient-pole structure rotor, and compared with the rotor of wholecircle shape in the related technology, salient pole Construction rotor can prevent the leakage field and slot effect of rotor interpolar, to improve the efficiency of rotor core 20.

In addition, it is necessary to explanation, for the rotor core 20 with multiple pole teeth 21, the maximum outside diameter of rotor core 20 Size d refers to the connection line size of the tooth top for two pole teeth 21 that the line of tooth top crosses the axis of rotor core 20.

Further, with continued reference to shown in Fig. 5 and Fig. 6, the normal profile of pole tooth 21 can be formed as arc-shaped, rotor iron The outer periphery of the shaft section of core 20 can be formed by multiple arc-shaped are sequentially connected, and two neighboring arc-shaped junction is formed with Tooth socket 22.

In addition, as shown in Figure 5 and Figure 6, using the center of rotor core 20 circle tangent as the center of circle and with the tooth top of pole tooth 21 Radius be R (at this point, R=0.5d), it is tangent with the slot bottom of tooth socket 22 and using the center of rotor core 20 as the half of the circle in the center of circle Diameter is r.If r:R ＜ 0.96 can lead to the too short along the circumferential development length of rotor core 20 of pole tooth 21, reduce motor 100 Performance；If r:R ＞ 0.98 can cause tooth socket 22 too small, and when driving motor 100 is run, it is corresponding cannot effectively to reduce tooth socket And the noise jamming generated.Therefore, in some embodiments of the utility model, r:R=0.96-0.98, for example, in this practicality In some novel specific embodiments, r:R can be respectively 0.96,0.97 and 0.98 etc., effectively reduce slot effect, simultaneously It ensure that the efficiency of driving motor 100.

Can be variable-frequency motor, root according to the driving motor 100 for food cooking machine 200 of the utility model embodiment According to the difference of food species to be processed needed for food cooking machine 200, variable-frequency motor can provide different rotating speeds, torque and Time etc. makes to have the food cooking machine 200 of driving motor 100 intelligent.In addition, variable-frequency motor is carried out without structures such as carbon brush Carbon brush abrasion is not present in commutation, and operation noise is lower, is conducive to the service life for improving food cooking machine 200 and improves user Use feeling, in some embodiments of the utility model, driving motor 100 can be frequency control brush DC electricity Machine.

Optionally, in the present invention, food cooking machine 200 can be blender, wall-breaking machine, Normal juice machine, juice extractor Or soy bean milk making machine etc..Wall-breaking machine rotating speed is high, can be used for handling harder food, and can will be present in food pericarp, A large amount of plants element fully broken wall release at fruit stone and rhizome；Normal juice machine rotating speed is relatively low, is squeezed, less flexible is carried by push type The mode taken handles food；Juice extractor rotating speed is higher, and being pulverized and mixed for a greater variety of foods may be implemented；Soy bean milk making machine rotating speed compared with The functions such as preheating, mashing, mashing off and delay infusion process full-automation may be implemented in height.According to the utility model embodiment Driving motor 100 can be applied to a greater variety of food cooking machines 200, meet more use demands, and practicability is stronger.And And according to the power supply circuit of the utility model embodiment 231, pass through the company between motor control panel 232 and driving motor 100 Magnet ring 2313 is set in wiring, the high-frequency noise for inhibiting to generate in 200 course of work of food cooking machine by the magnet ring 2313, from And it can ensure that normal drive signal is applied on driving motor 100 so that driving motor 100 being capable of stable operation.

According to the food cooking machine 200 of the utility model embodiment, power supply circuit 231, driving motor 100 and stator core 10 other compositions and operation are known for those of ordinary skill in the art, are not described in detail herein.

In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on ... shown in the drawings Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model System.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

In the present invention unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only Indicate that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into Row combines and combination.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model Inside it can make changes, modifications, alterations, and variations to the above described embodiments.

Claims (11)

1. a kind of power supply circuit of food cooking machine, which is characterized in that the food cooking machine includes cooking container, driving motor With the Food processing part for being handled food, the food being formed in container for holding food of arranging accommodates Chamber, the Food processing part stretch into the food accommodating chamber and hold relative to the cooking under the drive of the driving motor Device rotates, and the power supply circuit includes：

Rectifier bridge, the first input end of the rectifier bridge are connected to the firewire of the AC power of input, and the second of the rectifier bridge Input terminal is connected to the zero curve of the AC power, and the AC power is converted to DC power supply by the rectifier bridge；

Electrolytic capacitor, the positive terminal of the electrolytic capacitor are connected with the first output end of the rectifier bridge, the electrolytic capacitor Negative pole end is connected with the second output terminal of the rectifier bridge is followed by reference ground, and the both ends of the electrolytic capacitor are also associated with motor control Making sheet, the motor control panel are connected with the driving motor, and the electrolytic capacitor is to DC power supply progress voltage stabilizing Processing, and by motor control panel described in the direct-current power supply after steady pressure treatment, with by the motor control panel to the drive Dynamic motor is controlled；

Magnet ring, the magnet ring are arranged on the connecting line between the motor control panel and the driving motor, and the magnet ring is used To inhibit the high-frequency noise generated in the food cooking machine course of work.

2. the power supply circuit of food cooking machine as described in claim 1, which is characterized in that the driving motor include three-phase around Group, the three-phase windings are using the terminals for being connected to the motor control panel after the connection of star-like or triangle by extended line Mouthful.

3. the power supply circuit of food cooking machine as claimed in claim 2, which is characterized in that the extended line passes through the magnet ring Setting.

4. the power supply circuit of food cooking machine as claimed in claim 2, which is characterized in that the extended line is at least around described Magnet ring one encloses.

5. the power supply circuit of the food cooking machine as described in any one of claim 1-4, which is characterized in that the driving motor For DC brushless motor.

6. the power supply circuit of food cooking machine as described in claim 1, which is characterized in that the capacitance of the electrolytic capacitor is 400uf-1000uf。

7. the power supply circuit of food cooking machine as claimed in claim 6, which is characterized in that the capacitance of the electrolytic capacitor is 860uf。

8. the power supply circuit of food cooking machine as described in claim 1, which is characterized in that the food cooking machine is stirring Machine, wall-breaking machine, Normal juice machine or juice extractor.

9. a kind of food cooking machine, which is characterized in that including：

Container is arranged, the food accommodating chamber for holding food is formed in the cooking container；

Driving motor；

Food processing part for being handled food, the Food processing part stretch into the food accommodating chamber and described It is rotated relative to the cooking container under the drive of driving motor；

The power supply circuit of food cooking machine as described in any one of claim 1-8.

10. food cooking machine as claimed in claim 9, which is characterized in that the driving motor includes：

Stator core, the stator core include the stator yoke of annular and multiple stator teeths, the width of the stator yoke For W, multiple stator teeths are set to the inner peripheral surface of the stator yoke, and it is fixed to be formed between the two neighboring stator teeth Sub- tooth socket, multiple stator teeths limit the stator hole coaxial with the stator yoke, and each stator teeth includes The stator tooth boots of the stator teeth main body that is connected with the stator yoke and the inner end for being located at the stator teeth main body, Mei Gesuo The width for stating stator teeth main body is V, wherein W：V=0.6-0.7；

Rotor core, the rotor core are rotatably arranged in the stator hole and coaxial with the stator hole.

11. food cooking machine as claimed in claim 9, which is characterized in that the driving motor includes：

Stator core, the stator core include annular stator yoke and set on the stator yoke inner peripheral surface it is multiple fixed Sub- teeth portion, is formed with stator tooth socket between the two neighboring stator teeth, multiple stator teeths limit with it is described fixed The maximum radial dimension of the coaxial stator hole in sub- yoke portion, the stator yoke is D；

Rotor core, the rotor core is rotatably arranged in the stator hole and, the rotor coaxial with the stator hole The maximum radial dimension of iron core is d, wherein D and d meets：0.4≤d/D≤0.55.