CN209733689U - Food preparation machine with good heat dissipation - Google Patents

Abstract

The utility model provides a food processing machine with good heat dissipation, which comprises a machine base, a stirring cup arranged on the machine base and a crushing knife arranged in the stirring cup, wherein a motor for driving the crushing knife to run is arranged in the machine base, the motor comprises a front end cover, a rear end cover, a stator assembly and a rotor assembly, the rotor assembly is arranged in the stator assembly, and the front end cover and the rear end cover are respectively arranged at two ends of the rotor assembly and the stator assembly; the heat dissipation device comprises a base, a rotor assembly, a stator assembly, a heat dissipation assembly and a heat dissipation fan, wherein the base is provided with an air inlet and an air outlet at the bottom, a heat dissipation gap is formed between the rotor assembly and the stator assembly, the heat dissipation fan is installed at the lower end of a motor shaft of the rotor assembly, when the heat dissipation fan runs, external air enters the base from the air inlet, flows through a front end cover and the heat dissipation gap, dissipates heat of. The utility model discloses form orderly heat dissipation channel in the motor is inside to can dispel the heat to stator module and rotor subassembly simultaneously, the radiating effect is good, and the fan is installed in the motor cavity simultaneously, and the noise is little.

Description

Food preparation machine with good heat dissipation

Technical Field

The utility model belongs to the food processing field, concretely relates to good food preparation machine dispels heat.

Background

The existing food processor realizes the food material crushing function by driving the crushing knife to rotate through a motor. Along with the diversification of functions and the increase of the use frequency of the food processor products, the food processor with the brush series motor is conventionally used at present, carbon powder pollution exists in the work, the service life of the motor is short, vibration and noise are large, accurate speed regulation cannot be realized, and when too many materials are used in the food processor with the conventional series motor, the crushing rotating speed is reduced, and the crushing effect is poor; when the material is less, motor load rotational speed is high, and crushing effect is better, but the noise is big, user experience is poor, leads to the cooking machine product to have not few defects, can not satisfy user's demand. In the prior art, a direct current brushless motor is also arranged in a food processor, although the problems are solved, the balance is poor, the problem of dynamic balance is difficult to solve on the premise of high rotating speed of the food processor, in addition, the existing direct current brushless motor is a centrifugal fan and is arranged below a motor stator and a rotor, namely, the existing heat dissipation is not arranged inside the motor, only the outside of the motor is dissipated, and the heat generated after the motor works is generally gathered inside the motor, so that the heat dissipation efficiency is not high.

Disclosure of Invention

For solving the above-mentioned problem that prior art exists, the utility model provides a food processor that operates steadily, the radiating effect is good.

The utility model adopts the technical proposal that:

A food processor with good heat dissipation comprises a base, a stirring cup arranged on the base, and a crushing knife arranged in the stirring cup, wherein a motor for driving the crushing knife to operate is arranged in the base, the motor comprises a front end cover, a rear end cover, a stator assembly and a rotor assembly, the rotor assembly is arranged in the stator assembly, and the front end cover and the rear end cover are respectively arranged at two ends of the rotor assembly and two ends of the stator assembly; the motor base bottom is equipped with air intake and air outlet, be equipped with the heat dissipation clearance between rotor subassembly and the stator module, the motor shaft upper end drive of rotor subassembly is smashed the sword and is rotatory, radiator fan is installed to the motor shaft lower extreme of rotor subassembly, and when radiator fan operation, outside wind gets into the frame from the air intake, dispels the heat to stator module and rotor subassembly after front end housing, heat dissipation clearance flow through, flows through the rear end housing again and flows out from the air outlet. The utility model discloses form orderly heat dissipation channel in the motor is inside to can dispel the heat to stator module and rotor subassembly simultaneously, the radiating effect is good, and the fan is installed in the motor cavity simultaneously, and the noise is little.

Further, stator module includes stator core, insulating skeleton and motor winding wire, insulating skeleton includes preceding insulating skeleton and back insulating skeleton, preceding insulating skeleton is fixed respectively at the stator core both ends with the lock of back insulating skeleton, motor winding wire is wound in stator core, be equipped with between stator core and the rotor subassembly heat dissipation clearance. The utility model discloses form whole insulation behind the insulating skeleton lock around using, can promote insulating reliability, improve insulating skeleton's assembly strength, reduce the winding material quantity.

Further, be cross lock joint between preceding insulating skeleton and the back insulating skeleton, preceding insulating skeleton is equipped with the clearance with the back insulating skeleton after cross lock joint, the clearance is 0.5mm ~3 mm. The utility model discloses a good lock of preceding, back insulating skeleton and stator core tip, insulating skeleton do not have the cavity phenomenon, and skeleton intensity is good, and reduces the winding material quantity when the winding wire winding.

Further, preceding insulating skeleton is inclined plane cross lock joint with back insulating skeleton, and the distance of cross lock joint is 2.5mm ~5mm, guarantees the firm nature of lock joint between preceding insulating skeleton and the back insulating skeleton.

Further, the stator core corresponding to the motor winding wire is provided with a notch, the insulation framework corresponding to the notch is provided with a guide groove, the guide groove is arranged outside the notch, and a notch blocking piece is arranged in the guide groove. The utility model avoids the leakage of the enameled wire in the slot from the slot opening and the interference of the rotation of the rotor by arranging the slot opening baffle; the problem that the creepage distance between the enameled wires and the stator and rotor iron cores is insufficient due to the fact that the distance between the enameled wires in the slot and the slot openings is too small is avoided; the inner circle of the stator assembly forms a closed whole, so that wind noise can be reduced.

Further, the notch blocking piece is an insulating blocking piece. The utility model discloses an insulating skeleton lock and notch separation blade assembly back form good insulation, can completely cut off the heat of motor winding wire to constitute good radiating wind channel inside the motor.

Further, the width of the guide groove is larger than that of the notch, and the thickness of the guide groove is larger than that of the notch blocking piece. The utility model discloses a notch separation blade can be fine shelter from the notch and make stator module's interior circle form a closed whole, can reduce wind and make an uproar.

Further, the guide groove is a notch groove formed in the insulating framework.

Or the guide groove is a notch structure formed between the L-shaped opening of the insulating framework and the wall surface of the stator core.

Furthermore, the wall thickness of the insulating framework in the stator iron core is 0.6 mm-1.2 mm, and a notch is convenient to arrange.

The utility model has the advantages that:

1. When the cooling fan operates, outside wind enters the base from the air inlet, flows through the front end cover and the cooling gap, then cools the stator assembly and the rotor assembly, flows out from the air outlet through the rear end cover, forms an ordered cooling channel in the motor, and can cool the stator assembly and the rotor assembly simultaneously, the cooling effect is good, and meanwhile, the fan is installed in the cavity of the motor and has small noise.

2. The both ends of stator module use the lock of front and back insulating skeleton, do not need the whole insulating of moulding plastics of stator module into can realize whole insulation, can promote insulating reliability, improve insulating skeleton's assembly strength, reduce winding material quantity, reduce cost.

3. Insulating skeleton adopts inclined plane cross lock joint with the back insulating skeleton before, and the distance of cross lock joint is in 2.5mm ~5mm scope, the firm nature of lock joint between insulating skeleton and the back insulating skeleton before guaranteeing, can not throw off because of short lock joint, can not make lock joint intensity low because of the overlength yet, if the distance of cross lock joint is less than 2.5mm, then can lead to the easy pine of lock joint between insulating skeleton and the back insulating skeleton before can leading to and take off, firm nature is poor, if the distance of cross lock joint is greater than 2.5mm, then can lead to difficult installation and still can make lock joint intensity reduce on the contrary because of the overlength.

4. The notch blocking piece is arranged to prevent the enameled wire in the slot from leaking from the notch and interfering the rotation of the rotor; the problem that the creepage distance between the enameled wires and the stator and rotor iron cores is insufficient due to the fact that the distance between the enameled wires in the slot and the slot openings is too small is avoided; the inner circle of the stator assembly forms a closed whole, so that wind noise can be reduced.

5. The notch separation blade adopts insulating separation blade for stator module's insulating skeleton lock and notch separation blade assembly back form good insulation, can completely cut off the heat of motor winding wire, thereby constitute good radiating wind channel in motor inside.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an explosion structure diagram of the motor of the present invention.

Fig. 3 is an exploded view of the stator assembly of the present invention.

Fig. 4 is a schematic flow diagram of the cooling air of the present invention.

fig. 5 is a schematic view of the separation structure of the insulating frame of the present invention.

Fig. 6 is a schematic view of a local structure of the fastening portion of the insulating frame of the present invention.

Fig. 7 is a schematic sectional view of a tooth portion of the insulation frame fastened on the stator core.

Fig. 8 is a schematic structural view of the stator assembly after the notch retaining piece is installed.

Fig. 9 is an enlarged schematic view of a structure at a in fig. 8.

In the figure: 1. the motor base, 2, stirring cup, 3, motor, 31, front end housing, 32, stator module, 320, insulating skeleton, 321, preceding insulating skeleton, 322, notch separation blade, 323, stator core, 324, back insulating skeleton, 325, guide way, 326, notch, 33, rotor subassembly, 331, rotor magnet steel, 34, back end housing, 4, circuit board, 5, signal board, 6, heat dissipation clearance, 7, radiator fan.

Detailed Description

the present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

Referring to fig. 1 and 2, the present embodiment provides a food processor with a simple structure, which includes a base 1, a stirring cup 2 disposed on the base 1, and a crushing blade (not shown) disposed in the stirring cup 2, wherein a motor 3 for driving the crushing blade to operate is mounted in the base 1, and the motor 3 is connected to a circuit board 4 for controlling the operation thereof through a motor lead. The stirring cup 2 is covered with a cup cover, and the cup cover is provided with a feeding cover component. The stirring cup is provided with a handle, and the bottom of the inner cavity of the stirring cup is provided with a heating tube.

The pivot of motor 3 sets up vertically up in this embodiment frame 1, the connector is installed down to the output of pivot, the connector is installed to the bottom of stirring cup 2, go up the connector and be connected with the arbor linkage, when stirring cup 2 is installed on frame 1, lower connector and last connector coupling, when using, starter motor 3, the connector is passed through down in the 3 pivots of motor, go up the connector and drive the arbor and rotate, thereby it is rotatory in 2 inner chambers of stirring cup to drive the crushing sword of installing on the arbor.

Referring to fig. 2 and 3, the motor 3 of the present embodiment adopts a dc brushless motor, and includes a front end cover 31, a rear end cover 34, a stator assembly 32 and a rotor assembly 33, wherein the rotor assembly 33 is installed in the stator assembly 32, and the front end cover 31 and the rear end cover 34 are respectively installed at two ends of the rotor assembly 33 and the stator assembly 32; the stator assembly 32 comprises a stator core 323, a front insulating framework 321, a rear insulating framework 324 and a motor winding wire, the front insulating framework 321 and the rear insulating framework 324 are fastened and fixed at two ends of the stator core 323 respectively, the front insulating framework 321 and the rear insulating framework 324 form an insulating framework 320, the insulating framework 320 and the stator core 323 can be in a 6-slot or 9-slot structure, as shown in fig. 5, a notch blocking piece 322 for blocking a notch is inserted on the insulating framework 320, the front insulating framework 321 is positioned on the front end cover 31 side, the rear insulating framework 324 is positioned on the rear end cover 34 side, and the motor winding wire is wound around the stator core 323; install signal plate 5 on the preceding insulating skeleton 321, signal plate 5 is used for linking together motor winding wire and motor lead-out wire, signal plate 5 is the arc, the outside of rotor subassembly 33 is located to the ring of signal plate 5.

Referring to fig. 4, in this embodiment, an air inlet 11 and an air outlet 12 are disposed at the bottom of the base 1, a heat dissipation gap 6 is disposed between the rotor assembly 33 and the stator core 323 of the stator assembly 32, and a heat dissipation fan 7 is mounted at the lower end of a motor shaft of the rotor assembly 33, when the heat dissipation fan 7 operates, external air enters the base 1 from the air inlet 11, flows through the front end cover 31 and the heat dissipation gap 6, dissipates heat of the stator assembly 32 and the rotor assembly 33, and then flows out of the air outlet 12 through the rear end cover 34. The utility model discloses at the inside orderly heat dissipation channel that forms of motor 3 to can dispel the heat to stator module 32 and rotor subassembly 33 simultaneously, the radiating effect is good, and radiator fan 7 installs in the motor cavity simultaneously, and the noise is little.

Referring to fig. 6, in the present embodiment, the front insulating frame 321 and the rear insulating frame 324 are fastened in a slant cross manner, a first step surface is disposed on an inner wall surface of an end portion of the front insulating frame 321, a wall surface of the first step surface is a slant, a second step surface is correspondingly disposed on an outer wall surface of an end portion of the rear insulating frame 324, a wall surface of the second step surface is also a slant, a distance between the first step surface and the second step surface in the cross fastening is 2.5mm to 5mm, the distance in the cross fastening in the present embodiment is preferably 3.5mm, and may also be 3mm, 4mm, 4.5mm, and the like, so as to ensure the fastening firmness between the front insulating frame 321 and the rear insulating frame 324. The wall thickness of the insulating framework 320 in the stator core 323 is 0.6 mm-1.2 mm, and the wall thickness of the insulating framework 320 in the stator core 323 is preferably 1mm, and can be 0.8mm, 1.2mm and the like.

Referring to fig. 7, the front insulating frame 321 and the rear insulating frame 324 are fastened to the stator core 323, and a gap c is formed between the front insulating frame 321 and the rear insulating frame 324 after the front insulating frame 321 and the rear insulating frame 324 are fastened in a cross manner, so that the stator core 323 is enveloped, and the motor winding wire outside the frames can be well insulated from the stator core 323. Because the stator core 323 is formed by laminating silicon steel sheets, the height dimension precision of the stator core 323 is insufficient, and usually has a tolerance of 0.5mm, if the gap c =0 at the fastening part of the front and rear insulating frameworks, when the tolerance of the core thickness is removed, a gap exists between the insulating framework 320 and the end part of the stator core 323, which affects the strength of the insulating framework 320 and increases the usage amount of winding materials. From this embodiment clearance c is 0.5mm ~3mm, this embodiment clearance c preferred 0.6mm, also can be 1mm, 1.5mm, 2.5mm etc. for preceding, back insulating skeleton and stator core 323 tip are good to be buckled, and insulating skeleton 320 does not have the cavity phenomenon, and skeleton intensity is good when the winding wire winding, and reduces the winding material quantity.

Referring to fig. 8 and 9, in the present embodiment, a notch 326 is formed in the stator core 323 corresponding to the motor winding wire, a guide groove 325 is formed in the insulating frame 320 corresponding to the notch 326, the guide groove 325 is formed outside the notch 326, and a notch blocking piece 322 is formed in the guide groove 325. The brushless DC motor is a centralized winding, the winding winds at the single span of each stator tooth part, after the winding of the stator assembly 32 is finished, the notch blocking piece 322 can be inserted into the guide groove 325 arranged on the insulating framework 320 to form a closed notch 326, the utility model discloses a set notch blocking piece 322 prevents the in-groove enameled wire from leaking from the notch 326 to interfere the rotor rotation; the problem that the creepage distance between the enameled wire and the stator and rotor iron cores is insufficient due to the fact that the distance between the enameled wire in the slot and the notch 326 is too small is avoided; the inner circle of the stator assembly 32 forms a closed whole, which can reduce wind noise.

The width f =2~4mm of the notch 326 of the stator core 323 of this embodiment, the width f of the notch 326 of this embodiment is preferably 3.5mm, also can be 2.5mm, 4mm etc. the notch blocking piece 322 is installed in the outside of notch 326, and the unilateral is about 1mm more than the width of the notch 326 of the stator core 323. The width d of the guide groove 325 of the notch blocking piece 322 is 3-10 mm, which is larger than the width of the notch blocking piece 322, the thickness e = 0.15-1 mm of the guide groove 325, which is larger than the thickness of the notch blocking piece 322, the width d of the guide groove 325 in the embodiment is preferably 6mm, also can be 5mm, 7mm and the like, and the thickness e of the guide groove 325 is preferably 0.5mm, also can be 0.3mm, 0.8mm and the like. Notch separation blade 322 is insulating material, and thickness 0.1~1mm, width 4~10mm, length be greater than or equal to stator core 323 fold thick, this embodiment notch separation blade 322's thickness is preferred 0.4mm, also can be 0.2 mm, 0.7mm etc. notch separation blade 322's width is preferred 5mm, also can be 4.5mm, 6mm etc.. The guide groove 325 of the notch blocking piece 322 may be a notch groove formed by the insulating frame 320 itself, or may be a notch structure formed by combining the insulating frame 320 and the inner wall of the stator core 323, that is, the L-shaped opening formed in the insulating frame 320 and the inner wall of the stator core 323 combine to form a U-shaped notch. After the insulating framework 320 and the notch blocking piece 322 are assembled, the utility model forms good insulation and can isolate the heat of the motor winding wire, thereby forming a good heat dissipation air duct inside the motor 3; the slot baffles 322 can better shield the slot 326 to form a closed whole body with the inner circle of the stator assembly 32, and can reduce wind noise.

The utility model adopts the DC brushless motor, the motor has no carbon brush, the processing machine has no carbon dust pollution, the reliability is high, and the service life is long; an ordered heat dissipation channel is formed in the motor, the stator assembly and the rotor assembly can be simultaneously dissipated, the heat dissipation effect is good, and meanwhile, the fan is arranged in a cavity of the motor, so that the noise is low; the insulating skeleton forms whole insulation after the lock before using to be provided with the mounting structure of notch separation blade on insulating skeleton, can promote insulating reliability, improve insulating skeleton's assembly strength, reduce the winding material quantity.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing has been a detailed description of the preferred embodiments and principles of the present invention, and it will be apparent to those skilled in the art that variations may be made in the specific embodiments based on the concepts of the present invention, and such variations are considered as within the scope of the present invention.

Claims (10)

1. A food processor with good heat dissipation comprises a base, a stirring cup arranged on the base, and a crushing knife arranged in the stirring cup, wherein a motor for driving the crushing knife to operate is arranged in the base, the motor comprises a front end cover, a rear end cover, a stator assembly and a rotor assembly, the rotor assembly is arranged in the stator assembly, and the front end cover and the rear end cover are respectively arranged at two ends of the rotor assembly and two ends of the stator assembly; the frame bottom is equipped with air intake and air outlet, its characterized in that: the heat dissipation device is characterized in that a heat dissipation gap is formed between the rotor assembly and the stator assembly, the upper end of a motor shaft of the rotor assembly drives the crushing cutter to rotate, a heat dissipation fan is installed at the lower end of the motor shaft of the rotor assembly, when the heat dissipation fan runs, external air enters the base from the air inlet, flows through the front end cover and the heat dissipation gap, dissipates heat of the stator assembly and the rotor assembly, and then flows out of the air outlet through the rear end cover.

2. The heat-dissipating food processor as claimed in claim 1, wherein: stator module includes stator core, insulating skeleton and motor winding wire, insulating skeleton includes preceding insulating skeleton and back insulating skeleton, preceding insulating skeleton is fixed respectively at the stator core both ends with the back insulating skeleton lock, motor winding wire is wound in stator core, be equipped with between stator core and the rotor subassembly heat dissipation clearance.

3. The heat-dissipating food processor as claimed in claim 2, wherein: the front insulating framework and the rear insulating framework are in cross buckling, gaps are formed between the front insulating framework and the rear insulating framework after the front insulating framework and the rear insulating framework are in cross buckling, and the gaps are 0.5 mm-3 mm.

4. A heat dissipating food processor as claimed in claim 3, wherein: the front insulating framework and the rear insulating framework are in inclined plane cross buckling, and the distance between the cross buckling is 2.5 mm-5 mm.

5. The heat-dissipating food processor as claimed in any one of claims 2 to 4, wherein: the stator core corresponding to the motor winding wire is provided with a notch, the insulation framework corresponding to the notch is provided with a guide groove, the guide groove is arranged outside the notch, and a notch blocking piece is arranged in the guide groove.

6. The heat-dissipating food processor as claimed in claim 5, wherein: the notch blocking piece is an insulating blocking piece.

7. The heat-dissipating food processor as claimed in claim 5, wherein: the width of the guide groove is larger than that of the notch, and the thickness of the guide groove is larger than that of the notch blocking piece.

8. The heat-dissipating food processor as claimed in claim 5, wherein: the guide groove is a notch groove formed by the insulation framework.

9. The heat-dissipating food processor as claimed in claim 5, wherein: the guide groove is a notch structure formed between an L-shaped opening of the insulating framework and the wall surface of the stator core.

10. The heat-dissipating food processor as claimed in claim 5, wherein: the wall thickness of the insulating framework positioned in the stator iron core is 0.6 mm-1.2 mm.