CN208319076U - A kind of noise reduction food processor - Google Patents

Abstract

The utility model discloses a kind of noise reduction food processor, including the base with motor, the stirring cup, the crushing knife in stirring cup that are connect with base, the motor shaft upper end of motor is connect with crushing knife, base is equipped with air inlet and air outlet, and air outlet is located at side below base, and the motor shaft lower end is equipped with fan, the base bottom is equipped with spiral case, the spiral case is located at the periphery of fan, and circulation bend is equipped between the spiral case and air outlet, and the circulation bend is arc.Technical solution according to the present utility model can reduce the noise generated when food processor work, prevent noise excessive and influence user experience.

Description

A kind of noise reduction food processor

Technical field

The utility model belongs to field of food processing machines more particularly to a kind of noise reduction food processor.

Background technique

Existing food processor, such as cooking machine, juice extractor generally include base and processing part, to be equipped with electricity in base Machine is processed food with driving processing part, and in the motor course of work will necessarily persistent fever, therefore existing food Product processing machine is generally equipped with radiator structure, is radiated by radiator structure realization to the cavity that base limits.

Currently, the air discharge structure of food processor radiator structure can be summarized as two kinds, one is use grizzly bar radial pattern Air discharge structure is surrounded according to radioactive combination by grizzly bar and forms air discharge structure, since the wind path wall of the structure is one Radial pattern grizzly bar is enclosed, therefore the high-speed flow being discharged is beaten and can generate siren noise and resonance noise on grizzly bar, in addition, radial pattern The air duct that grizzly bar impales is open type, so that rotor wire casing high speed siren noise, fan airstream noise are easy directly in base It connects and blazes abroad, biggish noise can be generated in this way；Another is using volute type air discharge structure, although the air duct of the structure Wall is volute type, can partially remove the siren noise that high-speed flow is beaten on wind path wall, and ventilation efficiency also significantly improves, still The noise that motor, fan generate in base can also be propagate directly to outside base, still deposit in this way along open spiral case air duct In the big problem of noise, therefore noise brought by above two air discharge structure is larger, production when increasing food processor operation Raw noise causes user experience poor.

Utility model content

The purpose of this utility model is to provide a kind of noise reduction food processor.

In order to solve the above-mentioned technical problem, the utility model provides a kind of noise reduction food processor, including with motor The motor shaft upper end of base, the stirring cup connecting with base, the crushing knife in stirring cup, motor is connect with crushing knife, machine Seat is equipped with air inlet and air outlet, and air outlet is located at side below base, and the motor shaft lower end is equipped with fan, the base bottom Portion is equipped with spiral case, and the spiral case is located at the periphery of fan, and circulation bend is equipped between the spiral case and air outlet, and the circulation is curved Road is arc.

Further, the radian of the circulation bend is greater than 60 °, and there is the circulation bend the first connection end and second to connect Go side, the first connection end are connected to spiral case, and the second connection end is connected to air outlet.

Further, acclivitous guide surface is equipped at first connection end.

Further, the guide surface tilted down is equipped at second connection end.

Further, the circulation bend is variable cross-section bend.

Further, it is described circulation bend radial section from first connection end to second connection end at least through once by The small variation to become larger.

Further, it is described circulation bend radial section from first connection end to second connection end at least through once by The small variation to become larger again from large to small.

Further, the spiral case includes spiral case substrate and the extension that extends spirally outward from the inner end of spiral case substrate Plate, spiral case extend spirally to form circulation coaming plate outward, circulate and form the circulation bend between coaming plate and volute outer wall.

Further, the volute outer wall and circulation coaming plate inner wall are respectively equipped with the first reflection muscle and the second reflection muscle.

Further, the first reflection muscle and the second reflection muscle are staggered.

The beneficial effects of the utility model are:

1, motor shaft lower end is equipped with fan, and base bottom is equipped with spiral case, and spiral case is located at the periphery of fan, spiral case and air outlet Between be equipped with circulation bend so that the air-flow in base is before flowing to air outlet via spiral case, it is necessary to first pass through the circulation Bend, circulation bend has been substantially increased the circulation path of air-flow, and has often carried the noise that motor and fan generate in air-flow secretly, During noise is propagated in the bend that circulates in this way, it can be interfered in circulation bend, can mutually weaken a part and make an uproar Sound is conducive to reduce steam whistle noise to play the role of noise reduction, and the bend that circulates is arc.

2, there is circulation bend the first connection end to be connected to end with second, and the first connection end is connected to spiral case, the second connection end It is connected to air outlet, the radian for the bend that circulates is not less than 60 °, can guarantee to obtain during noise is propagated in the bend that circulates Effectively weaken, if the radian of circulation bend less than 60 °, then circulates to a certain extent, the arc length of bend is smaller, so that noise exists The time propagated in bend is too short, and noise reduction effect is unobvious.

3, it is equipped with acclivitous guide surface at the first connection end, so that the section at the first connection end is expanded suddenly, made The mutation of acoustic impedance occurs at this for the sound wave for obtaining certain frequencies, to achieve the purpose that noise elimination.

4, it is equipped with the guide surface tilted down at the second connection end, so that the section sudden contraction at the second connection end, makes The mutation of acoustic impedance occurs at this for the sound wave for obtaining certain frequencies, to achieve the purpose that noise elimination.Moreover, first is connected at end Equipped with acclivitous guide surface, it is connected to the guide surface for being equipped with and tilting down at end by second, such expansion and one shrink, benefit In decaying is discharged and collected to noise, the energy jump of noise can be reduced, reach noise reduction purpose.

5, circulation bend is variable cross-section bend, and variable cross-section bend can weaken acoustic reactance and carry out noise reduction, and can weaken noise The sound intensity, the sound intensity is one kind of noise energy parameter, is conducive to noise reduction in this way, and variable cross-section bend is additionally favorable for noise in bend Continuous reflection more conducively weakens noise, improves user experience to reinforce interfering for noise.

6, the radial section of circulation bend is from the first connection end to the second connection end at least through the change once changed from small to big Change, it is not only easy to form, but also it is able to achieve the purpose of variable cross-section, and then meet noise reduction requirement.

7, circulate bend radial section from first connection end to second connection end at least through once change from small to big again by The variation to become smaller greatly, so set, making noise at least can be by once first discharging the decaying regathered, more in circulation bend Conducive to noise is weakened, noise reduction effect is become apparent.

8, spiral case includes spiral case substrate and the extension board that extends spirally outward from the inner end of spiral case substrate, spiral case spiral shell outward Rotation extends to form circulation coaming plate, circulates and forms circulation bend between coaming plate and volute outer wall, volute outer wall and circulation coaming plate inner wall Be respectively equipped with the first reflection muscle and second reflection muscle, first reflection muscle and second reflection muscle play sound wave reinforce reflection, interference Effect, makes noise interfere weakening, reaches noise reduction purpose.

9, the first reflection muscle and the second reflection muscle are staggered, and are in this way arranged more reasonable, are more advantageous to and reinforce sound wave Reflection and interference, so that the dynamics that noise mutually weakens is bigger, noise reduction effect is become apparent.

Detailed description of the invention

Attached drawing is used to provide to further understand technical solutions of the utility model, and constitutes part of specification, It is used to explain the technical solution of the utility model together with the embodiments of the present invention, not constitute to the utility model technology The limitation of scheme.

Fig. 1 is the structural schematic diagram of the utility model embodiment one；

Fig. 2 is the structural schematic diagram of spiral case and circulation bend in the utility model embodiment one；

Fig. 3 is base inner structural schematic diagram in the utility model embodiment two；

Fig. 4 is the structural schematic diagram of spiral case and circulation bend in the utility model embodiment two；

Fig. 5 is the structural schematic diagram of motor cylinder and bottom cover in the utility model embodiment three；

Fig. 6 is the cross-sectional view of Fig. 5；

Fig. 7 is the explosive view of motor cylinder in Fig. 5；

Fig. 8 is the structural schematic diagram of spiral case in the utility model embodiment four；

Fig. 9 is base inner structural schematic diagram in the utility model embodiment five；

Figure 10 is the structural schematic diagram of spiral case in Fig. 9, noise-reducing structure and the bend that circulates；

Figure 11 is the noise reduction datagram of noise-reducing structure in the utility model embodiment five；

Figure 12 is the noise reduction datagram of the food processor of the utility model embodiment five.

Specific embodiment

The embodiments of the present invention are described in detail below in conjunction with attached drawing.It should be noted that not rushing In the case where prominent, the feature in the embodiments of the present invention and embodiment can mutual any combination.

The structure of the food processor of the utility model is as shown in Figures 1 to 10, which includes base 1 and stir Cup 2 is mixed, motor 3 and wiring board (not shown) are equipped in base 1, stirring cup 2 is set to 1 top of base, and stirring cup 2 includes cup Lid 4 and cup body 5, cup body 5 is glass and has handle, and cup lid 4 and cup body 5 surround to form comminuting space, and powder is equipped in cup body 5 7 upper end of motor shaft of broken knife 6, motor 3 is connect with crushing knife 6, is connected between the two by shaft coupling, shaft coupling includes upper shaft coupling Device (not shown) and lower coupler (not shown), upper coupling are connect with the cutter shaft of crushing knife 6, lower coupler and electricity The connection of 7 upper end of arbor, after stirring cup 2 is placed on base 1 in place, upper coupling and lower coupler are cooperatively connected, so that motor 3 The crushing knife 6 can be driven to rotate in comminuting space with crashing food.

Base 1 is equipped with air inlet 8 and air outlet 9, and air outlet 9 is located at 1 lower section side of base, and base 1 is limited and entered the wind The heat dissipation wind channels 10 of 8 connection of mouth, 7 lower end of motor shaft are equipped with fan 11, and 1 bottom of base is equipped with the spiral case being connected to heat dissipation wind channel 10 12, spiral case 12 is located at the periphery of fan 11, and during motor 3 is run, fan 11 sucks external wind from air inlet 8 to be dissipated In the passage of heat 10, and the air-flow in heat dissipation wind channel 10 is driven to flow to air outlet 9 from spiral case 12, so realize base 1 in motor 3 with And the heat dissipation of wiring board, circulation bend 13 is equipped between spiral case 12 and air outlet 9, so that the air-flow in base 1 is via spiral case Before 12 flow to air outlet 9, it is necessary to first pass through the circulation bend 13, often carry motor 3 in air-flow secretly and fan 11 generates Noise, and noise circulate bend 13 in propagate during, can circulation bend 13 in interfering, can mutually weaken A part of noise, to play the role of noise reduction.

Embodiment one:

As depicted in figs. 1 and 2, the food processor of the present embodiment includes base 1 and stirring cup 2, is equipped with motor in base 1 3 and wiring board (not shown), stirring cup 2 is set to 1 top of base, and stirring cup 2 includes cup lid 4 and cup body 5, and cup body 5 is glass Glass cup simultaneously has handle, and cup lid 4 and cup body 5 surround to form comminuting space, and crushing knife 6, the motor shaft 7 of motor 3 are equipped in cup body 5 Upper end is connect with crushing knife 6, is connected between the two by shaft coupling, shaft coupling includes upper coupling (not shown) and the second line of a couplet Axis device (not shown), upper coupling are connect with the cutter shaft of crushing knife 6, and lower coupler is connect with 7 upper end of motor shaft, work as stirring After cup 2 is placed on base 1 in place, upper coupling and lower coupler are cooperatively connected, and motor 3 is enabled to drive the crushing knife 6 in powder Rotation is in broken space with crashing food.

Base 1 is equipped with air inlet 8 and air outlet 9, which includes casing 27 and the bottom cover 28 positioned at 27 bottom of casing, Casing 27 and bottom cover 28 surround to form heat dissipation wind channel 10, and air inlet 8 and air outlet 9 are set on bottom cover 28, and and heat dissipation wind channel 10 connections, the interior motor cylinder 18 being equipped with for accommodating motor 3 of heat dissipation wind channel 10, motor cylinder 18 is open type, the motor shaft of motor 3 7 lower ends are equipped with fan 11, and 1 bottom of base is equipped with the spiral case 12 being connected to heat dissipation wind channel 10, and spiral case 12 is set on bottom cover 28 and position In the bottom of motor cylinder 18, heat dissipation wind channel 10 is connected to by motor cylinder 18 with spiral case 12, and spiral case 12 is located at the periphery of fan 11, in electricity During machine 3 is run, fan 11 sucks external wind in heat dissipation channel 10 from air inlet 8, and drives in heat dissipation wind channel 10 Air-flow successively flow to air outlet 9 through motor cylinder 18 and spiral case 12, so realize base 1 in motor 3 and wiring board heat dissipation, Circulation bend 13 is equipped between spiral case 12 and air outlet 9 so that air-flow in base 1 via spiral case 12 flow to air outlet 9 it Before, it is necessary to first to pass through the circulation bend 13, often carry the noise that motor 3 and fan 11 generate in air-flow secretly, and noise exists During being propagated in circulation bend 13, it can be interfered in circulation bend 13, can mutually weaken a part of noise, thus Play the role of noise reduction,

The arc length of circulation bend 13 is L1, and the arc length of spiral case 12 is L2, and L1/L2=0.7 in the present embodiment can obviously mention Noise reduction effect is risen, and the arc length L1 that not will lead to circulation bend 13 is excessive and increase cost and be limited to the limited space of base And it is difficult to dispose.There is circulation bend 13 first connection end 14 to be connected to end 15 with second, and the first connection end 14 is connect with spiral case 12, Second connection end 15 is connect with air outlet 9, and spiral case 12 includes spiral case substrate 37 and extends outwardly from the inner end of spiral case substrate 37 Extension board 38, between spiral case substrate 37 and extension board 38 formed a notch, the notch formed outlet air end 36, outlet air end 36 with First connection end 14 connects.During motor 3 is run, external wind is sucked heat dissipation channel 10 by fan 11 from air inlet 8 It is interior, and drive the air-flow in heat dissipation wind channel 10 to enter 18 pairs of motors 3 of motor cylinder and radiate, then air-flow enters spiral case 12 and passes through Outlet air end 36 circulate bend 13 first connection end 14, due to first connection end 14 and second connection end 15 between circulation The presence of bend 13, therefore air-flow can be made to interfere during flowing to the second connection end 15 by the first connection end 14, A part of noise being mingled in air-flow can mutually be weakened in this way, thus play the role of noise reduction, motor 3 in the present embodiment No-load speed is 20000r/min, and noise is smaller when motor 3 is run.

It should be understood that the value of L1/L2 is also possible to 0.5 or 0.8 or 1.3 or 1.5 or 1.7 or 2, as long as meeting 0.5 ≤ L1/L2≤2, the bigger noise reduction effect of the value of L1/L2 is more obvious within this range.

It should be understood that air inlet 8 can be set in air inlet purpose on casing 27, also may be implemented, and it is avoided that air inlet It is interfered with the outlet air at air outlet 9.

Embodiment two:

The difference between this embodiment and the first embodiment lies in circulation bend is variable cross-section bend, it, should in conjunction with shown in Fig. 3 and Fig. 4 Circulation bend 13 is variable cross-section bend, and variable cross-section bend can weaken acoustic reactance and carry out noise reduction, and can weaken the sound intensity of noise, sound It is one kind of noise energy parameter by force, is conducive to noise reduction in this way, and to be additionally favorable for noise continuous anti-in bend for variable cross-section bend It penetrates, to reinforce interfering for noise, more conducively weakens noise, improve user experience, the radial section of the circulation bend 13 End 15 is connected to by the variation once changed from small to big again from large to small from the first connection end 14 to the second, and first is connected at end 14 The radial section that radial section size is connected at end 15 with second is equal in magnitude and minimum, and the first connection end 14 is connected to end with second The radial section of the circulation bend 13 in 15 middle positions is maximum, and the radial section of circulation bend 13 so was gradually increased by minimum before this It adds to maximum and minimum is gradually decrease to by maximum again, so set, making noise can be by once first releasing in circulation bend 13 The decaying regathered is put, more conducively weakening noise, noise reduction effect become apparent.

First connection end 14 is connect with 12 rounding off of spiral case, is equipped with acclivitous guide surface at the first connection end 14 16, so that the section at the first connection end 14 is expanded suddenly, so that the mutation of acoustic impedance occurs at this for the sound wave of certain frequencies, To achieve the purpose that noise elimination, the second connection end 15 is connect with 9 rounding off of air outlet, is equipped with and is dipped down at the second connection end 15 Oblique guide surface 16, so that the section sudden contraction at the second connection end 15, so that the sound wave of certain frequencies generation sound at this The mutation of impedance is equipped with acclivitous guide surface 16 moreover, first is connected at end 14 to achieve the purpose that noise elimination, will The guide surface 16 that tilts down is equipped at second connection end 15, such expansion and one shrink, conducive to noise carry out release and Decaying is collected, the energy jump of noise can be reduced, reach noise reduction purpose.

Exhaust bend 17 is equipped between second connection end 15 and air outlet 9, the radial section of exhaust bend 17 is gradually increased, And connect with circulation 13 rounding off of bend, exhaust bend 17 is connected between circulation bend and air outlet 9 in this way, it can be right The air-flow that bend 13 flows out that circulates carries out noise reduction process again, thus collected and discharged decaying again to the noise sound intensity, The energy jump of noise is reduced, noise reduction purpose is reached, and since the radial section of exhaust bend 17 is gradually increased, is also conducive to make an uproar Sound constantly reflects in exhaust bend to reinforce interfering for noise, therefore can reach the effect for weakening noise.

3 revolving speed of motor is higher, and the noise of generation is bigger, and the no-load speed of motor 3 is 25000r/min in the present embodiment, this In no-load speed refer to motor idle running revolving speed.Due to being equipped with circulation bend 13 between spiral case 12 and air outlet 9, guarantee to dissipate The air-flow of hot-flow flue 10 has to increase by the bend 13 that circulates, and L1/L2=1 before flowing to air outlet 9 via spiral case 12 The circulation path of air-flow weakens the noise of air-flow entrainment, it is thus possible to meet the no-load speed of the present embodiment motor 3 significantly For 25000r/min, food processor is enabled to achieve the effect that high speed crushes, and then food can reach the standard of broken wall, Easily it is absorbed by the body.Circulation bend 13 has been substantially increased the circulation path of air-flow, and circulation bend 13 is arc, is conducive to reduce steam whistle Noise, the radian measure beta of the circulation bend 13 are 135 °, can guarantee to obtain effectively during noise is propagated in the bend 13 that circulates Weakening, the radian for the bend 13 that theoretically circulates is the bigger the better, be more conducive to noise reduction in this way, but its limit that will receive base size System.

It should be understood that the radian measure beta of circulation bend 13 is also possible to 60 ° or 80 ° or 100 ° or 120 ° or 150 ° or 170 ° Or 180 °, as long as being not less than 60 °, can guarantee effectively to be weakened during noise is propagated in the bend 13 that circulates, The bigger noise reduction effect of radian of circulation bend 13 is more obvious, but its size will receive the limitation of base size.

It should be understood that the radial section of circulation bend 13 is from the first connection end to the second connection end at least only by primary The variation changed from small to big, it is not only easy to form in this way, but also it is able to achieve the purpose of variable cross-section, and then meet noise reduction requirement.

The present embodiment other structures and beneficial effect are the same as example 1, and details are not described herein.

Embodiment three:

The difference of the present embodiment and embodiment one and embodiment two is the structure of motor cylinder 18: in conjunction with Fig. 5 to Fig. 7 institute Show, motor cylinder 18 includes stack shell 19, the cover 21 positioned at the cylinder base 20 of 19 bottom of stack shell and positioned at the top of stack shell 19, on cover 21 Equipped with the power supply perforative first shaft hole 22 in 7 upper end of arbor, 7 upper end of motor shaft is connect after passing through first shaft hole 22 with crushing knife 6, this The no-load speed of motor 3 is 30000r/min in embodiment, and 3 upper end of motor is equipped with electric machine support, and electric machine support is placed in stack shell 19 Top is simultaneously located at 21 lower section of cover, and cover 21 and electric machine support are fixed at the top of stack shell 19 by fastener.Cylinder base 20 is set to machine It is connected on seat 1 and with air outlet 9, is connected between the two by spiral case 12,18 top of motor cylinder is equipped with and is connected to heat dissipation wind channel 10 Communication port 23, after fan 11 makes the air-flow in heat dissipation wind channel 10 enter motor cylinder 18 from top to bottom in 3 operational process of motor Air outlet 9 is flowed to, so set, motor cylinder 18 wraps up entire motor 3 in it, so that the noise that motor 3 generates has been isolated Come, complete machine Noise Reduction can be played, simultaneously because the top of motor cylinder 18 is equipped with cover 21, so that the top of motor cylinder 18 is Non- open type, incoming air area greatly reduces compared with prior art, in this way under conditions of intake is certain, in motor cylinder 18 The flowing velocity of air-flow is effectively promoted, and conducive to the heat in fast speed belt leakage of electricity machine barrel 18, and then improves the heat dissipation of motor Efficiency, even if motor 3 is run with no-load speed for 30000r/min standard, the heat dissipation effect of motor is also preferable, and will not produce Raw excessive noise.

In the present embodiment, cover 21 covers at the top of stack shell 19, and 19 lateral wall of stack shell is equipped with limited step 24, limit Step 24 is abutted against with 21 bottom of cover, is passed through the position-limiting action of limited step 24 in this way, can quickly be covered at cover 21 The top of stack shell 19, conducive to the assembly of cover 21.19 lateral wall of stack shell protrudes outward forms the first guide part 25,21 outside of cover Wall opposite sides is protruded outward forms the second guide part 26, and the first guide part 25 is bulge-structure, and the second guide part 26 is recess Structure, so that the second guide part 26 can cover on the first guide part 25, the second guide part 26 is matched with the first guide part 25, Installation guiding role is played in the assembling process of cover 21, further improves the assembly efficiency of cover, and the first guide part 25 are protruded outward by 19 lateral wall of stack shell and are formed, and the second guide part is protruded outward by 21 lateral wall opposite sides of cover to be formed, easily In molding, processing cost is low.

Communication port 23 is located on cover 21, and in motor operation course, fan 11 makes the air-flow in heat dissipation wind channel 10 certainly It is upper and it is lower motor cylinder 18 is entered by communication port 23 after flow to air outlet 9, reduce the incoming air area of motor cylinder 18 in this way, into Under conditions of air quantity is certain, the flowing velocity of the air-flow in motor cylinder 18 is effectively promoted, and is conducive in fast speed belt leakage of electricity machine barrel Heat, and then improve the radiating efficiency of motor, specifically, communication port 23 is set to the both ends of 21 side wall of cover, in this way in electricity In machine operational process, flow direction, fan 11 shown in arrow make the air-flow in heat dissipation wind channel 10 from cover 21 referring to figure 5 and figure 6 Two sidewalls symmetrically enter in motor cylinder 18, since air-flow is symmetrically to enter, can ensure to enter in motor cylinder 18 The flow direction of air-flow is more smooth, accelerates the flowing velocity of air-flow to a certain extent, conducive to the heat in fast speed belt leakage of electricity machine barrel 18 Amount, and then improve the radiating efficiency of motor 3.Base 1 includes casing 27 and the bottom cover 28 positioned at 27 bottom of casing, 27 He of casing Bottom cover 28 surrounds to form heat dissipation wind channel 10, and cylinder base 20 is set on bottom cover 28 and is integrally formed with bottom cover 28, is conducive to modularization in this way Design, modularization assembling and modularization maintenance, air inlet 8 and air outlet 9 are respectively positioned on bottom cover 28, and are located at the outer of cylinder base 20 It encloses.

Cylinder base 20 is equipped with opening 29 and support base 30, is connected between support base 30 and opening 29 by connection strap 31, connects 31 one end of item is connect with support base 30, and the other end is connect with 29 edges of opening, and 3 lower end of motor is placed on support base 30, support base 30 centers are equipped with the second axis hole 32, and 7 lower end of motor shaft is connect after passing through the second axis hole 32 with fan 11, and support base 30 can Supporting role well is played to 3 lower end of motor, the vibration that 3 operational process of motor can be effectively prevent to generate is conducive to motor 3 and uses The raising in service life and lasting normal work, and then be conducive to fan 11 to a certain extent and operate normally to radiate, fan 11, which is located at, to be opened The lower section of mouth 29, in 3 operational process of motor, fan 11 makes the air-flow in heat dissipation wind channel 10 enter motor cylinder 18 from top to bottom Air outlet 9 is flowed to by opening 29 afterwards, the lower section that fan 11 is located at opening 29 is conducive to the discharge of 18 interior air-flow of motor cylinder, sharp in this way Heat in fast speed belt leakage of electricity machine barrel 18, and then improve the radiating efficiency of motor 3.Opening 29, which upwardly extends, to be formed wind-guiding and encloses Side 33, wind-guiding surrounding edge 33 be located at the periphery of 3 lower end of motor, wind-guiding surrounding edge 33 and support base 30 and between formed and flowed through for air-flow Gap 34, the air-flow in motor cylinder 18 flow through gap 34 and then flow to air outlet 9, lead under the guiding role of wind-guiding surrounding edge 33 Wind surrounding edge 33 plays preferable air-flow guiding role, conducive to the discharge of 18 interior air-flow of motor cylinder, is conducive to fast speed belt leakage of electricity machine barrel Heat in 18, wind-guiding surrounding edge 33 are arranged obliquely upward, in this way formation closing-in structure, so that the negative pressure value formed in the unit time It is higher, and then guarantee the fast speed of the air-flow flowed at opening 29, convection effects are good, are conducive to motor 3 and radiate.

It should be understood that cylinder base 20 can also be with the split type connection of bottom cover 28.

The present embodiment other structures and beneficial effect are same as the previously described embodiments, and details are not described herein.

Example IV:

The difference of the present embodiment and embodiment three is the structure of spiral case, and as shown in connection with fig. 8, spiral case 12 is helical form, prolongs It stretches plate 38 to extend spirally outward from the inner end of spiral case substrate 37, the air-flow flowed out from spiral case outlet air end 36 can be in extension board 38 Guiding role under smoothly flow out, be conducive to the quick flowing of air-flow in this way, and then be conducive to rapid cooling, and spiral helicine spiral case energy It is enough quickly to export air-flow, while being conducive to reduce the steam whistle noise that fan generates.

The no-load speed of motor is 35000r/min in the present embodiment, due to the setting of above-mentioned spiral case 12, so that fan produces Noise is smaller when raw air-flow is exported through spiral case 12 rapidly, and air-flow quickly exports the heat dissipation that can accelerate motor.In spiral case 12 The heart is equipped with the through-hole 35 that power supply 7 lower end of arbor passes through, and 7 lower end of motor shaft is connect after passing through through-hole 35 with fan 11, spiral case 12 Radius is R1, and the radius of fan 11 is R2, R1/R2 1.1, meets 1.02≤R1/R2≤1.15, so set, making spiral case The Negative Pressure Difference of 12 formation is bigger, and exhausting wind speed is bigger, improves exhausting effect, and then improve the stream of 10 interior air-flow of heat dissipation wind channel Dynamic speed, is conducive to rapid cooling.Through-hole 35 forms the air intake of spiral case 12 and is located at the inner end of spiral case 12, and outlet air end 36 is located at snail The outer end of shell 12, outlet air end 36 are not to be arranged in the same direction with air outlet 9, are connected between the two by circulation bend 13, to increase gas The circulation path of stream.

It should be understood that the value of R1/R2 is also possible to 1.02 or 1.05 or 1.08 or 1.11 or 1.13 or 1.15, as long as Meet 1.02≤R1/R2≤1.15, the smaller suction pressure of the value of R1/R2 is bigger, and the speed of air-flow is higher.

The present embodiment other structures and beneficial effect are identical as embodiment three, and details are not described herein.

Embodiment five:

The difference of the present embodiment and example IV is noise-reducing structure, in conjunction with shown in Fig. 9 and Figure 10, the fan of the present embodiment 11 periphery be equipped with noise-reducing structure 39, noise-reducing structure 39 be arranged between outlet air end 36 and air outlet 9, fan 11 by external wind from into It is sucked in heat dissipation wind channel 10 at air port 8, and drives the air-flow in heat dissipation wind channel 10 to enter spiral case 12, and through 39 noise reduction of noise-reducing structure After flow to air outlet 9, from spiral case 12 flow out air-flow speed it is still higher, can also have steam whistle noise, noise-reducing structure 39 Be arranged can the sound wave to air-flow constantly absorbed, steam whistle noise, good muffling effect is effectively reduced.

In the present embodiment, cylinder base 20 includes cylinder base bottom wall and cylinder base side wall 41, and noise-reducing structure 39 is located at cylinder base side wall 41 In enclose, such air-flow after 39 noise reduction of noise-reducing structure by cylinder base side wall 41 reflect and be oriented to air outlet 9, noise-reducing structure 39 is adopted With porous plate noise elimination noise reduction structure, 36 injection noise of outlet air end of spiral case 12 is effectively reduced.

The noise-reducing structure 39 includes the first acoustical panel, and extension board 38 is equipped with the first bloop 42, and extension board 38 forms the One acoustical panel, the first acoustical panel with the first bloop 42 can absorb the noise being mingled in air-flow, noise be greatly reduced, this prolongs Stretching plate 38 is arc, and the setting of arc can mutually weaken a part of noise, be more advantageous in this way so that interfere between air-flow The promotion of noise reduction dynamics.

To further increase erasure effect, noise-reducing structure 39 further includes the second acoustical panel 43 and the first noise reduction region 44, and The the first acoustical panel i.e. periphery of extension board 38 is arranged in two acoustical panels 43, and the second acoustical panel 43 is equipped with the second bloop 45, the Gap between one acoustical panel, that is, extension board 38 and the second acoustical panel 43 forms the first noise reduction region 44, has the second bloop 45 The second acoustical panel 43 and the first acoustical panel and the second acoustical panel between gap formed the first noise reduction region 44 all have Absorb noise function so that air-flow after 38 noise reduction of the first acoustical panel, that is, extension board again successively through 43 He of the second acoustical panel First noise reduction region 44 carries out noise reduction process, which is arc, and the setting of arc is so that mutually dry between air-flow It relates to, can mutually weaken a part of noise in this way, be more advantageous to the promotion of noise reduction dynamics.

Further to walk raising erasure effect, noise-reducing structure 39 further includes third acoustical panel 46 and the second noise reduction region 47, and The periphery of the second acoustical panel 43 is arranged in three acoustical panels 46, and third acoustical panel 46 is equipped with third bloop 48, the second acoustical panel Gap between 43 and third acoustical panel 46 forms the second noise reduction region 47, the third acoustical panel 46 with third bloop 48 with And the second noise reduction region 47 that the second gap between acoustical panel and third acoustical panel is formed all has the function of absorbing noise, makes It obtains air-flow and is successively carrying out noise reduction through third acoustical panel 46 and the second noise reduction region 47 again after 44 noise reduction of the first noise reduction region Processing, the third acoustical panel 46 are arc, and the setting of arc can mutually weaken a part so that interfere between air-flow in this way Noise is more advantageous to the promotion of noise reduction dynamics, and cylinder base side wall 41 is solid soundproof plate, is last one of noise reduction of noise-reducing structure 39 Structure, it can separate completely the noise source finally propagated.

In order to have noise reduction step by step to improve erasure effect, the hole of the aperture of the second bloop 45 less than the first bloop 42 Diameter, the aperture of third bloop 48 are not more than the aperture of the second bloop 45, and aperture is smaller, and lower noise is bigger, and such first Acoustical panel, that is, extension board 38 carries out primary noise reduction, the noise-reducing structure after the first acoustical panel, that is, extension board 38 carry out it is secondary or even Advanced noise reduction, such good muffling effect, 48 aperture of third bloop in the present embodiment are equal to the aperture of the second bloop 45, First noise reduction region 44 is less than the second noise reduction region 47, so that the noise reduction dynamics in the second noise reduction region 47 is greater than the first noise reduction region 44 noise reduction dynamics should be depending on specific structure as specific size to improve erasure effect.Here, the first acoustical panel is formed Level-one noise-reducing structure, the second acoustical panel and the first noise reduction region form second level noise-reducing structure, third acoustical panel and the second noise reduction area Domain forms three-level noise-reducing structure, and referring to Figure 11, noise disappears level-one noise-reducing structure, second level noise-reducing structure and three-level noise-reducing structure It is reduced gradually under sound effect, is reduced to 5 decibels by original 30 decibels, erasure effect is splendid, the sky of the motor 3 of the present embodiment Idling speed is 40000r/min, and the noise of generation is small.

The spiral case 12 of the present embodiment extends spirally to form circulation coaming plate 49, circulation coaming plate 49 and the round and smooth mistake of extension board 38 outward Connection is crossed, circulates and forms aforementioned circulation bend 13 between coaming plate 49 and volute outer wall, volute outer wall and circulation 49 inner wall of coaming plate point Not She You first reflection muscle 50 and second reflection muscle 51, first reflection muscle 50 and second reflection muscle 51 play sound wave reinforce reflection, The effect of interference makes noise interfere weakening, reaches noise reduction purpose, and the first reflection muscle 50 and the second reflection muscle 51 are staggeredly set It sets, is arranged so more reasonable, be more advantageous to the reflection and interference for reinforcing sound wave, so that the dynamics that noise mutually weakens is bigger, Noise reduction effect becomes apparent.

The food processor of the present embodiment has preferable noise reduction effect and heat dissipation effect, in food processor operational process In, motor 3 drives the crushing knife 6 to rotate in comminuting space with crashing food, and 3 driving fan 11 of motor rotates at the same time, Fan 11 sucks external wind in heat dissipation channel 10 from air inlet 8, and the air-flow in heat dissipation wind channel 10 is driven to pass through communication port 23 motors 3 entered in 18 pairs of the motor cylinder motor cylinder 18 from top to bottom radiate, and entire motor 3 is wrapped up it by motor cylinder 18 It is interior, so that the noise that motor 3 generates is isolated, complete machine Noise Reduction can be played, simultaneously because the top of motor cylinder 18 Equipped with cover 21, so that the top of motor cylinder 18 is non-open type, but entered the wind by communication port 23, compared with prior art into Wind area greatly reduces, and in this way under conditions of intake is certain, the flowing velocity of the air-flow in motor cylinder 18 is effectively mentioned It rises, conducive to the heat in fast speed belt leakage of electricity machine barrel 18, and then improves the radiating efficiency of motor；Then the air-flow in motor cylinder 18 Enter spiral case 12 by the opening 29 of cylinder base 20, since spiral case 12 is helical form, air-flow quickly can be imported into outlet air end 36, conducive to air flow rate raising with rapid cooling, while be additionally favorable for reduce fan generate steam whistle noise；Then air-flow Noise-reducing structure 39 can be flowed through, noise-reducing structure 39 is porous plate noise elimination noise reduction structure, and air-flow is successively through the first acoustical panel, the first noise reduction Region, the second acoustical panel, the second noise reduction region and third acoustical panel carry out gradually noise reduction and handle, and noise-reducing structure 39 is high-speed flow Noise reduction area has used dissipative muffler design principle, constantly absorbs to the sound wave of air-flow, and gradually decays or sound wave is transferred to people The insensitive frequency range close to ultrasonic wave of ear carrys out noise reduction, since the frequency range that dissipative muffler is eliminated the noise is wider, to all The noise of frequency has the effect of noise reduction, and sound deadening capacity is big；It can circulate by the air-flow that 39 noise reduction of noise-reducing structure is handled curved Road 13, circulation bend 13 are variable cross-section bend, on the one hand can play the role of release to noise source sound intensity energy and weaken, the sound intensity is sound The parameter of sound energy, the sound intensity, which reduces noise, to become smaller, and on the other hand can reduce the speed of air-flow, and the speed of air-flow becomes smaller , additional siren noise and resonance noise will not be generated, 13 two sidewalls of bend of furthermore circulating are additionally provided with the first reflection muscle 50 and the Two reflection muscle 51, the first reflection muscle 50 and the second reflection muscle 51 play the role of sound wave and reinforce reflection, interference, keep noise mutually dry It relates to and slackens, play Noise Reduction, circulation bend 13 is reactive muffler design, does not fill any sound-absorbing material inside it, mainly It is eliminated the noise by changing duct cross-section product to weaken acoustic reactance, it is primarily directed to the noise of low and medium frequency, and it is curved to circulate Road 13 can also be greatly lowered air velocity, so that air-flow will not generate additional siren noise and resonance noise；Air-flow passes through Circulation bend 13 subsequently enter exhaust bend 17, exhaust bend 17 be also reactive muffler design, it be to the noise sound intensity again It is primary to collect and discharge decaying, the energy jump of noise is reduced, achievees the purpose that noise reduction, air-flow are finally dropped through exhaust bend 17 The discharge of air outlet 9 is flowed to after making an uproar, referring to Figure 12, air-flow passes sequentially through noise-reducing structure 39, circulation bend 13 after the outflow of spiral case 12 With the noise reduction process in exhaust 17 3 noise reduction areas of bend, noise-reducing structure 39 forms high-speed flow noise reduction area, the circulation formation of bend 13 Intermediate frequency air-flow noise-reducing area, and be vented bend 17 and form reinforcement noise reduction area i.e. noise reduction area again, so that high frequency and intermediate frequency in air-flow Noise obtains effective noise reduction, so that the noise that motor 3 and fan 11 itself generate is lowered to ideal minimum value, theoretically may be used 20 to 30 decibels of drop, and the structure of motor cylinder 18 and spiral case 12 can promote the flowing velocity of air-flow, accelerate food processor Complete machine heat dissipation, can also reach noise reduction purpose simultaneously.

It should be understood that message structure 39 further includes the 4th acoustical panel or even more acoustical panels, they are arranged in third The periphery of acoustical panel, and be successively arranged outward from interior, yet further to promote erasure effect.

The present embodiment other structures and beneficial effect are identical as example IV, and details are not described herein.

As described above, the only preferred embodiment of the utility model not is used to limit the reality of the utility model Apply range, i.e., it is all according to equivalent changes and modifications made by the utility model, it is all that the utility model claims range is covered, Here it no longer illustrates one by one.

Claims (10)

1. a kind of noise reduction food processor, including with motor base, connect with base stirring cup, in stirring cup The motor shaft upper end of crushing knife, motor is connect with crushing knife, and base is equipped with air inlet and air outlet, and air outlet is located at below base Side, which is characterized in that the motor shaft lower end is equipped with fan, and the base bottom is equipped with spiral case, and the spiral case is located at fan Periphery, between the spiral case and air outlet be equipped with circulation bend, the circulation bend be arc.

2. noise reduction food processor according to claim 1, which is characterized in that the radian of the circulation bend is not less than 60 °, there is the circulation bend the first connection end be connected to end with second, and the first connection end is connected to spiral case, second be connected to end and Air outlet connection.

3. noise reduction food processor according to claim 2, which is characterized in that first connection is equipped at end to updip Oblique guide surface.

4. noise reduction food processor according to claim 2, which is characterized in that be equipped with and dip down at second connection end Oblique guide surface.

5. noise reduction food processor according to claim 2, which is characterized in that the circulation bend is variable cross-section bend.

6. noise reduction food processor according to claim 5, which is characterized in that the radial section of the circulation bend is from the One connection end to the second connection end is at least through the variation once changed from small to big.

7. noise reduction food processor according to claim 5, which is characterized in that the radial section of the circulation bend is from the One connection end to the second connection end is at least through the variation once changed from small to big again from large to small.

8. noise reduction food processor according to claim 1, which is characterized in that the spiral case include spiral case substrate and from The extension board that the inner end of spiral case substrate extends spirally outward, spiral case extend spirally to form circulation coaming plate outward, and circulate coaming plate and snail The circulation bend is formed between shell outer wall.

9. noise reduction food processor according to claim 8, which is characterized in that the volute outer wall and circulation coaming plate inner wall It is respectively equipped with the first reflection muscle and the second reflection muscle.

10. noise reduction food processor according to claim 9, which is characterized in that the first reflection muscle and the second reflection Muscle is staggered.