CN109744903A - A kind of food processor that noise reduces - Google Patents
A kind of food processor that noise reduces Download PDFInfo
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- CN109744903A CN109744903A CN201711264611.7A CN201711264611A CN109744903A CN 109744903 A CN109744903 A CN 109744903A CN 201711264611 A CN201711264611 A CN 201711264611A CN 109744903 A CN109744903 A CN 109744903A
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Abstract
The invention discloses the food processor that a kind of noise reduces, including the base with motor, the stirring cup being connect with base, crushing knife in stirring cup, the motor shaft upper end of motor is connect with crushing knife, base is equipped with air inlet and air outlet, air outlet is located at side below base, base limits the heat dissipation wind channel being connected to air inlet, the motor shaft lower end is equipped with fan, the base bottom is equipped with the spiral case being connected to heat dissipation wind channel, the spiral case is located at the periphery of fan, circulation bend is equipped between the spiral case and air outlet, the arc length of circulation bend is L1, the arc length of spiral case is L2, 0.5≤L1/L2≤2.According to the technique and scheme of the present invention, it can be effectively reduced noise, and then improve user experience.
Description
Technical field
The invention belongs to the food processor that field of food processing machines more particularly to a kind of noise reduce.
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.
Summary of the invention
The purpose of the present invention is to provide the food processor that a kind of noise reduces.
In order to solve the above technical problem, the present invention provides the food processor that a kind of noise reduces, including with motor
Base, the stirring cup, the crushing knife in stirring cup that are connect with base, the motor shaft upper end of motor connect with crushing knife,
Base is equipped with air inlet and air outlet, and air outlet is located at side below base, and base limits the radiation air being connected to air inlet
Road, the motor shaft lower end are equipped with fan, and the base bottom is equipped with the spiral case being connected to heat dissipation wind channel, and the spiral case is located at wind
The periphery of fan is equipped with circulation bend between the spiral case and air outlet, the arc length for the bend that circulates is L1, and the arc length of spiral case is L2,
0.5≤L1/L2≤2。
Further, the no-load speed of the motor is 20000-40000r/min, when the motor works, the fan
By external wind out of air inlet sucking heat dissipation channel, and drive the air-flow in heat dissipation wind channel successively from spiral case, circulation bend stream
To air outlet.
Further, the circulation bend is variable cross-section bend, and there is the circulation bend the first connection end and second to connect
Go side, the first connection end are connect with spiral case rounding off, and the second connection end is connected to air outlet.
Further, be equipped with exhaust bend between the second connection end and air outlet, be vented the radial section of bend by
It is cumulative big, and connect with circulation bend rounding off.
Further, the spiral case is helical form, and the spiral case has air intake and outlet air end, air intake and heat dissipation wind channel
Connection, outlet air end are connected to circulation bend.
Further, the spiral case includes spiral case substrate and the extension that extends spirally outward from the inner end of spiral case substrate
Plate, forms a notch between spiral case substrate and extension board, which forms outlet air end.
Further, the fan periphery is equipped with noise-reducing structure, and the noise-reducing structure setting is in outlet air end and circulation bend
Between, the fan sucks external wind in heat dissipation wind channel from air inlet, and the air-flow in heat dissipation wind channel is driven to enter spiral case,
And the flow direction circulation bend after noise-reducing structure noise reduction.
Further, be equipped with motor cylinder in the heat dissipation wind channel, motor cylinder include stack shell, positioned at stack shell bottom cylinder base and
Cover at the top of stack shell, cylinder base be set on base and be connected to spiral case, and motor cylinder top with heat dissipation wind channel equipped with being connected to
Communication port, fan flows to spiral case after the air-flow in heat dissipation wind channel is entered from top to bottom in motor cylinder in motor operation course.
Further, the base bottom is equipped with bottom cover, and the cylinder base is set on bottom cover, and the spiral case is set on cylinder base.
Further, the cylinder base and bottom cover are integrally formed.
The beneficial effects of the present invention are:
1, base is equipped with air inlet and air outlet, and air outlet is located at base lower section side, and base is limited to be connected to air inlet
Heat dissipation wind channel, motor shaft lower end are equipped with fan, and base bottom is equipped with the spiral case being connected to heat dissipation wind channel, and spiral case is located at the outer of fan
It encloses, circulation bend is equipped between spiral case and air outlet, when such motor works, fan, which sucks external wind from air inlet, to radiate
In channel, and the air-flow in heat dissipation wind channel is driven successively to flow to air outlet from spiral case, circulation bend.The bend that wherein circulates is set
It sets, 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, in air-flow often
Carry the noise that motor and fan generate secretly, and during noise is propagated in the bend that circulates, it can be in circulation bend mutually
Interference, can mutually weaken a part of noise, to play the role of noise reduction.The arc length of circulation bend is L1, the arc of spiral case
A length of L2,0.5≤L1/L2≤2 can be obviously improved noise reduction effect, in the case where spiral case arc length L2 is certain, if L1/L2 <
When 0.5, then the arc length L1 for the bend that circulates is too small, so that the time that noise is propagated in bend is too short, noise reduction effect is unobvious, if
When being L1/L2 > 2, although the arc length L1 of circulation bend can satisfy requirement, and then when can guarantee propagation of the noise in bend
Between require, but circulate bend arc length L1 it is too long, cost is on the one hand increased, on the other hand since base bottom space has
Limit, the excessive circulation bend of arc length are not easy to dispose in the bottom of base.
2, motor speed is higher, and the noise of generation is bigger.It is equipped with circulation bend between spiral case and air outlet, guarantees heat dissipation
The air-flow in air duct has to increase the circulation path of air-flow, greatly by the bend that circulates before flowing to air outlet via spiral case
The noise of air-flow entrainment is weakened greatly, it is thus possible to which the no-load speed for meeting motor is 20000-40000r/min, if motor
No-load speed less than 20000 r/min, food processor is difficult to achieve the effect that high speed crushes, and food cannot reach broken wall
Standard is not easy to be absorbed by the body, and the setting for the bend that circulates also loses significance；When motor load be greater than 40000r/min, turn
Speed is excessively high, then more demanding to the arc length of circulation bend, needs the circulation bend of higher arc length.
3, circulation bend is variable cross-section bend, and there is circulation bend the first connection end to be connected to end, the first connection end with second
It is connect with spiral case rounding off, the second connection end is connected to air outlet, and variable cross-section bend can weaken acoustic reactance and carry out noise reduction, and energy
Enough weaken the sound intensity of noise, 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 making an uproar
Sound constantly reflects in bend, to reinforce interfering for noise, more conducively weakens noise, improves user experience.
4, exhaust bend is equipped between the second connection end and air outlet, the radial section for being vented bend is gradually increased, and with
The bend rounding off that circulates connects, and exhaust bend is connected between circulation bend and air outlet in this way, can be to circulation bend
The air-flow of outflow carries out noise reduction process again, so that decaying is collected and be discharged again to the noise sound intensity, by the energy of noise
Amount mutation reduces, and reaches noise reduction purpose, and since the radial section of exhaust bend is gradually increased, is also conducive to noise in exhaust bend
Interior continuous reflection can achieve the effect that weaken noise to reinforce interfering for noise.
5, spiral case is helical form, and spiral case has air intake and outlet air end, and air intake is connected to heat dissipation wind channel, outlet air end and stream
Logical bend connection, spiral case include spiral case substrate and the extension board that extends spirally outward from the inner end of spiral case substrate, spiral case substrate
A notch is formed between extension board, which forms outlet air end, and the air-flow in spiral case is high-speed flow, and high-speed flow is easy
Steam whistle noise is generated, spiral case is set as helical form, is conducive to reduce steam whistle noise.
6, fan periphery is equipped with noise-reducing structure, and between outlet air end and circulation bend, fan will be extraneous for noise-reducing structure setting
Wind drives the air-flow in heat dissipation wind channel to enter spiral case, and after noise-reducing structure noise reduction out of air inlet sucking heat dissipation wind channel
Flow direction circulation bend.Outlet air end is connected to spiral case, and the speed of the air-flow flowed out from outlet air end is still higher, can also be had steam whistle and be made an uproar
Sound, noise-reducing structure can the sound wave to air-flow constantly absorbed, steam whistle noise is effectively reduced.
7, motor cylinder is equipped in heat dissipation wind channel, motor cylinder includes stack shell, positioned at the cylinder base of stack shell bottom and positioned at stack shell top
The cover in portion, cylinder base are set on base and are connected to spiral case, and motor cylinder top is equipped with the communication port being connected to heat dissipation wind channel, motor
Fan flows to spiral case after the air-flow in heat dissipation wind channel is entered from top to bottom in motor cylinder in operational process.In this way, motor cylinder
Entire motor is wrapped up in it, so that the noise that motor generates is isolated, complete machine Noise Reduction can be played.
8, base bottom is equipped with bottom cover, and cylinder base is set on bottom cover, and spiral case is set on cylinder base, is laid out so more reasonable, makes
It obtains under the action of fan, the air-flow in heat dissipation wind channel is easy to flow to spiral case after entering in motor cylinder from top to bottom again from base
Air outlet discharge, cylinder base and bottom cover can be integrateds molding, so that modularized design, modularization assembling and modularization are tieed up
It repairs.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of invention technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of spiral case and circulation bend in the embodiment of the present invention one；
Fig. 3 is base inner structural schematic diagram in the embodiment of the present invention two；
Fig. 4 is the structural schematic diagram of spiral case and circulation bend in the embodiment of the present invention two；
Fig. 5 is the structural schematic diagram of motor cylinder and bottom cover in the embodiment of the present invention 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 embodiment of the present invention four；
Fig. 9 is base inner structural schematic diagram in the embodiment of the present invention 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 embodiment of the present invention five；
Figure 12 is the noise reduction datagram of the food processor of the embodiment of the present invention five.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the present invention can mutual any combination.
The structure of food processor of the invention is as shown in Figures 1 to 10, which includes base 1 and stirring cup
2, base 1 is interior to be equipped with motor 3 and wiring board (not shown), and stirring cup 2 is set to 1 top of base, and stirring cup 2 includes cup lid 4
With cup body 5, cup body 5 is glass and has handle, and cup lid 4 and cup body 5 surround to form comminuting space, is equipped with and crushes in cup body 5
7 upper end of motor shaft of knife 6, motor 3 is connect with crushing knife 6, is connected between the two by shaft coupling, shaft coupling includes upper coupling
(not shown) and lower coupler (not shown), upper coupling are connect with the cutter shaft of crushing knife 6, lower coupler and motor
The connection of 7 upper end of axis, after stirring cup 2 is placed on base 1 in place, upper coupling and lower coupler are cooperatively connected, and enable motor 3
The crushing knife 6 is 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 3 He of motor in base 1
Wiring board (not shown), stirring cup 2 are set to 1 top of base, and stirring cup 2 includes cup lid 4 and cup body 5, and cup body 5 is glass
And handle is had, cup lid 4 and cup body 5 surround to form comminuting space, and crushing knife 6,7 upper end of motor shaft of motor 3 are equipped in cup body 5
It connect, is connected between the two by shaft coupling, shaft coupling includes upper coupling (not shown) and lower coupler with crushing knife 6
(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, when stirring cup 2
After being placed on base 1 in place, upper coupling and lower coupler are cooperatively connected, and enable motor 3 that the crushing knife 6 is driven to crush sky
Interior rotation is 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 be obviously improved drop
It makes an uproar effect, and the arc length L1 that not will lead to circulation bend 13 excessive and increase cost and be limited to the limited space of base and difficult
With placement.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, and second
Connection end 15 is connect with air outlet 9, and spiral case 12 includes spiral case substrate 37 and prolongs from the inner end of spiral case substrate 37 is outwardly extending
Plate 38 is stretched, forms a notch between spiral case substrate 37 and extension board 38, which forms outlet air end 36, outlet air end 36 and first
End 14 is connected to connect.During motor 3 is run, fan 11 sucks external wind in heat dissipation channel 10 from air inlet 8, and
Air-flow in driving heat dissipation wind channel 10 enters 18 pairs of motors 3 of motor cylinder and radiates, and then air-flow enters spiral case 12 and 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 bend
13 presence, therefore air-flow can be made to interfere during flowing to the second connection end 15 by the first connection end 14, in this way
A part of noise being mingled in air-flow can mutually be weakened, thus play the role of noise reduction, the zero load of motor 3 in the present embodiment
Revolving 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, and in conjunction with shown in Fig. 3 and Fig. 4, the 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, and 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 and constantly reflects in bend, with
Reinforce noise to interfere, more conducively weakening noise, improve user experience, the radial section of the circulation bend 13 is from first
Connection end 14 to the second is connected to end 15 by the variation once changed from small to big again from large to small, and first is connected to the radial direction section at end 14
The radial section that face size is connected at end 15 with second is equal in magnitude and minimum, and the first connection end 14 is connected among end 15 with second
The radial section of the circulation bend 13 of position is maximum, and the radial section of circulation bend 13 in this way was gradually increased to most by minimum before this
Minimum is gradually decrease to by maximum again greatly, so set, receive noise can by once first discharging again in circulation bend 13
The decaying of collection, 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 shown in Fig. 5 to Fig. 7, electricity
Machine barrel 18 includes stack shell 19, the cover 21 positioned at the cylinder base 20 of 19 bottom of stack shell and positioned at 19 top of stack shell, and cover 21 is equipped with
The power supply perforative first shaft hole 22 in 7 upper end of arbor, 7 upper end of motor shaft are connect after passing through first shaft hole 22 with crushing knife 6, this implementation
The no-load speed of motor 3 is 30000r/min in example, and 3 upper end of motor is equipped with electric machine support, and electric machine support is placed in 19 top of stack shell
And it is located at 21 lower section of cover, cover 21 and electric machine support and 19 top of stack shell is fixed on by fastener.Cylinder base 20 is set on base 1
And be connected to air outlet 9, it is connected between the two by spiral case 12,18 top of motor cylinder is equipped with the connection being connected to heat dissipation wind channel 10
Mouthfuls 23, fan 11 flows to out after making the air-flow in heat dissipation wind channel 10 enter motor cylinder 18 from top to bottom in 3 operational process of motor
Air port 9, so set, motor cylinder 18 wraps up entire motor 3 in it, so that the noise that motor 3 generates is isolated, it can
Complete machine Noise Reduction is played, simultaneously because the top of motor cylinder 18 is equipped with cover 21, so that the top of motor cylinder 18 is non-opens wide
Formula, incoming air area greatly reduces compared with prior art, in this way under conditions of intake is certain, air-flow in motor cylinder 18
Flowing velocity is effectively promoted, and conducive to the heat in fast speed belt leakage of electricity machine barrel 18, and then improves the radiating efficiency of motor, i.e.,
When making motor 3 with the operation of no-load speed 30000r/min standard, the heat dissipation effect of motor is also preferable, and will not generate 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, extension board
38 extend spirally outward from the inner end of spiral case substrate 37, and the air-flow flowed out from spiral case outlet air end 36 can leading in extension board 38
It is smoothly flowed out under to effect, is conducive to the quick flowing of air-flow in this way, and then be conducive to rapid cooling, and spiral helicine spiral case can be fast
Speed exports 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, outside the fan 11 of the present embodiment
It encloses and is equipped with noise-reducing structure 39, noise-reducing structure 39 is arranged between outlet air end 36 and air outlet 9, and fan 11 is by external wind from air inlet
It is sucked in heat dissipation wind channel 10 at 8, and drives the air-flow in heat dissipation wind channel 10 to enter spiral case 12, and flow after 39 noise reduction of noise-reducing structure
To air outlet 9, the speed of the air-flow flowed out from spiral case 12 is still higher, can also there is steam whistle noise, the setting of noise-reducing structure 39
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, only presently preferred embodiments of the present invention, practical range not for the purpose of limiting the invention, i.e.,
It is all according to equivalent changes and modifications made by the present invention, be all that scope of the invention as claimed is covered, no longer illustrate one by one here.
Claims (10)
1. the food processor that a kind of noise reduces, including with motor base, connect with base stirring cup, set on stirring
Crushing knife in cup, the motor shaft upper end of motor are connect with crushing knife, and base is equipped with air inlet and air outlet, and air outlet is located at machine
Seat lower section side, base limit the heat dissipation wind channel being connected to air inlet, which is characterized in that the motor shaft lower end is equipped with wind
Fan, the base bottom are equipped with the spiral case being connected to heat dissipation wind channel, and the spiral case is located at the periphery of fan, the spiral case and outlet air
Circulation bend is equipped between mouthful, the arc length for the bend that circulates is L1, and the arc length of spiral case is L2,0.5≤L1/L2≤2.
2. food processor according to claim 1, which is characterized in that the no-load speed of the motor is 20000-
40000r/min, when the motor works, the fan sucks external wind in heat dissipation channel from air inlet, and drives heat dissipation
Air-flow in air duct successively flows to air outlet from spiral case, circulation bend.
3. food processor according to claim 1, which is characterized in that the circulation bend is variable cross-section bend, described
There is circulation bend the first connection end be connected to end with second, and the first connection end is connect with spiral case rounding off, second be connected to end and
Air outlet connection.
4. food processor according to claim 3, which is characterized in that be equipped between the second connection end and air outlet
It is vented bend, the radial section for being vented bend is gradually increased, and is connect with circulation bend rounding off.
5. food processor according to claim 1, which is characterized in that the spiral case is helical form, and the spiral case has
Air intake and outlet air end, air intake are connected to heat dissipation wind channel, and outlet air end is connected to circulation bend.
6. food processor according to claim 5, which is characterized in that the spiral case includes spiral case substrate and from spiral case
The extension board that the inner end of substrate extends spirally outward, forms a notch between spiral case substrate and extension board, which forms out
Wind end.
7. food processor according to claim 6, which is characterized in that the fan periphery is equipped with noise-reducing structure, described
Between outlet air end and circulation bend, the fan sucks external wind in heat dissipation wind channel from air inlet for noise-reducing structure setting,
And the air-flow in heat dissipation wind channel is driven to enter spiral case, and the flow direction circulation bend after noise-reducing structure noise reduction.
8. food processor according to claim 1, which is characterized in that be equipped with motor cylinder, motor in the heat dissipation wind channel
Cylinder includes stack shell, the cover positioned at the cylinder base of stack shell bottom and at the top of stack shell, and cylinder base is set on base and is connected to spiral case,
Motor cylinder top is equipped with the communication port being connected to heat dissipation wind channel, and fan makes the air-flow in heat dissipation wind channel certainly in motor operation course
Spiral case is flowed to after in upper and lower entrance motor cylinder.
9. food processor according to claim 8, which is characterized in that the base bottom is equipped with bottom cover, the cylinder base
On bottom cover, the spiral case is set on cylinder base.
10. food processor according to claim 9, which is characterized in that the cylinder base and bottom cover are integrally formed.
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| CN201711264611.7A CN109744903A (en) | 2017-12-05 | 2017-12-05 | A kind of food processor that noise reduces |
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| CN201711264611.7A CN109744903A (en) | 2017-12-05 | 2017-12-05 | A kind of food processor that noise reduces |
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| CN112641350A (en) * | 2019-10-12 | 2021-04-13 | 九阳股份有限公司 | Mute food processing machine |
| CN113854874A (en) * | 2021-09-26 | 2021-12-31 | 珠海格力电器股份有限公司 | Base subassembly and food processingequipment |
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