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WO2017140180A1 - Pompe à diaphragme et pulvérisateur électrique - Google Patents

Pompe à diaphragme et pulvérisateur électrique Download PDF

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Publication number
WO2017140180A1
WO2017140180A1 PCT/CN2016/112182 CN2016112182W WO2017140180A1 WO 2017140180 A1 WO2017140180 A1 WO 2017140180A1 CN 2016112182 W CN2016112182 W CN 2016112182W WO 2017140180 A1 WO2017140180 A1 WO 2017140180A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
fluid
leg
diaphragm
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/112182
Other languages
English (en)
Chinese (zh)
Inventor
胡建坤
胡建长
胡斐然
胡斐凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2017140180A1 publication Critical patent/WO2017140180A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0413—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump

Definitions

  • the present invention relates to a diaphragm pump.
  • a motor is an electromagnetic device that converts electric energy according to the law of electromagnetic induction. It is widely used in various fields and is an indispensable prime mover in today's society. It provides a power source for a large number of electrical appliances or various machines. .
  • An electric sprayer is a motor-powered device.
  • electric sprayers typically use a rotary motor to drive a diaphragm pump.
  • Rotating electric machine is a rotating electromagnetic machine that relies on the principle of electromagnetic induction to realize the mutual conversion of mechanical energy and electric energy.
  • the rotating electric machine converts rotary motion into reciprocating swing by means of a transmission mechanism.
  • the usual transmission mechanism such as cam mechanism and eccentric coupling Rod structure.
  • the diaphragm pump uses a rotating electric machine and an eccentric wheel to push the diaphragm push rod to reciprocate. When pushed to the squeeze position at both ends, the resistance will be large, but the motor must rotate past, causing the instantaneous current to be abnormally large.
  • the average operating current is about 2.6A, but the instantaneous current of the diaphragm ⁇ at both ends is sequentially 7A or more, which is also harmful to the battery, the motor
  • the life expectancy is about 400 hours.
  • a novel diaphragm pump is provided in an embodiment.
  • the diaphragm pump includes a swing motor and a pump assembly, and the swing motor includes:
  • a U-shaped yoke having a first leg and a second leg, wherein the first leg and the second leg are respectively wound with a coil
  • control circuit the control circuit is electrically connected to the coil, and generates an alternating pulse, so that an end face of the two legs of the U-shaped yoke generates an alternating magnetic pole;
  • a swing arm swingable about a fulcrum, the swing arm extending outward from an end surface of the U-shaped yoke and bounded by a fulcrum
  • One end of the swing arm near the u-shaped yoke is an inner arm, and one end of the swing arm away from the U-shaped yoke is an outer arm
  • a second yoke the second yoke is mounted on the inner arm and close to the U One end of a yoke
  • the permanent magnets are fixedly mounted on the second yoke; the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum, and are first permanent magnets in the order of arrangement a second permanent magnet, a third permanent magnet, and a fourth permanent magnet; the radial ends of the first permanent magnet and the fourth permanent magnet have the same polarity, and the radial directions of the second permanent magnet and the third permanent magnet
  • the end faces have the same polarity; and the radial end faces of the first permanent magnets and the second permanent magnet radial end faces have opposite polarities and are disposed corresponding to the end faces of the first legs; the radial end faces of the third permanent magnets and the The radial end faces of the four permanent magnets are opposite in polarity and are disposed corresponding to the end faces of the second legs, and the end faces of the permanent magnets and the end faces of the corresponding legs have air gaps;
  • the pump assembly includes:
  • a fluid chamber a part of the side wall of the fluid chamber is a diaphragm
  • a fluid entering the passage the fluid inlet passage being in communication with the fluid chamber for inputting fluid from the fluid source into the fluid chamber;
  • a fluid discharge passage the fluid discharge passage is in communication with the fluid chamber for discharging fluid from the fluid chamber;
  • a diaphragm push-pull rod the diaphragm push-pull rod is mounted on the outer arm of the swing arm, And under the driving of the swing motor, the outer arm reciprocates, squeezes the diaphragm, and compresses the fluid chamber.
  • a gap between the first permanent magnet and the second permanent magnet is smaller than a width of the end surface of the first leg, and between the third permanent magnet and the fourth permanent magnet The gap is smaller than the width of the end surface of the second leg.
  • the end faces of the first leg and the second leg have arc faces that match the circumference of the permanent magnet swing ⁇ .
  • an elastic body for absorbing the moment of inertia of the swing arm in the position of the swing arm is disposed on both sides of the swing arm, and the elastic characteristic of the elastic body is two or more times. Curve.
  • the elastomer is a spherical ball, an elliptical ball, a cylinder, an elliptical cylinder or a semi-circular silicone member or a rubber member.
  • a movement path of the first permanent magnet and/or the fourth permanent magnet is disposed outside the U-shaped yoke and the first permanent magnet and/or the fourth permanent magnet are disposed to detect that the first permanent magnet or the fourth permanent magnet is in place A Hall element in a state, the Hall element being connected to a control circuit.
  • a further alternative pump of the diaphragm further includes a resonant elastic member that is fixed at one end to the fulcrum of the swing arm and the other end to the outer arm or the inner arm.
  • the outer arm has a force output portion
  • the force output portion has a curved outer wall
  • the diaphragm push-pull rod has a groove matching the force output portion
  • the fluid chamber is two
  • the diaphragm push-pull rod is disposed in the middle of the two fluid chambers, and when the diaphragm push-pull rod swings left and right, the two fluids are sequentially squeezed. Cavity.
  • a novel electric sprayer comprising a liquid inlet assembly, a liquid discharge assembly, and a diaphragm pump according to any of the above, the liquid inlet assembly and the fluid inlet
  • the passage is connected and provided with a first one-way valve for controlling the one-way circulation of the fluid
  • the liquid discharge assembly is in communication with the fluid discharge passage, and is provided with a second one-way valve for controlling the one-way circulation of the fluid
  • the liquid inlet assembly includes the storage a liquid tank and a liquid inlet pipe, wherein the liquid inlet pipe communicates with the fluid inlet passage
  • the liquid discharge assembly includes a liquid discharge pipe, a shutoff valve and a spray head, and the liquid discharge pipe communicates with the fluid discharge passage.
  • the nozzle is in communication with the outlet tube, and the shut-off valve is disposed on the outlet tube.
  • the radial faces of the first permanent magnet and the fourth permanent magnet of the four permanent magnets have the same polarity, and the radial faces of the second permanent magnet and the third permanent magnet have the same polarity
  • the second permanent magnet has the opposite polarity to the radial end face of the first permanent magnet, and the permanent magnet has an air gap corresponding to the U-shaped magnetic yoke.
  • the control circuit generates an alternating pulse with adjustable pulse width, so that the moving direction of the permanent magnet alternates, thereby forming a reciprocating swing, so that the outer arm of the swing arm drives the diaphragm push-pull rod to squeeze the diaphragm, changing the size of the fluid cavity, and realizing the liquid absorption and Drain.
  • Each leg of the U-shaped yoke corresponds to two permanent magnets.
  • the design of the permanent magnet redundancy of the swing motor is a magnetic circuit design different from the prior art, and the torque of the existing motor is larger than that of the same power. Large, the driving power is correspondingly reduced
  • FIG. 1 is a schematic structural view of an embodiment of a diaphragm pump of the present application
  • FIG. 2 is a schematic structural view of a swing motor in the embodiment shown in FIG. 1;
  • FIG. 3 is a schematic view showing the cooperation of the permanent magnet and the U-shaped yoke leg in the swing motor shown in FIG. 2; 4 is a schematic view of the swing motor shown in FIG. 2 in an energized state;
  • FIG. 5 is a schematic view of the swing motor shown in FIG. 2 in an energized state opposite to FIG. 3;
  • FIG. 6 is a first schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG. 2;
  • FIG. 7 is a second schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG. 2;
  • FIG. 8 is a third schematic view showing the radial end faces of four permanent magnets in the embodiment shown in FIG. 2;
  • FIG. 9 is a schematic structural view of a second embodiment of a swing motor of the present application.
  • FIG. 10 is a schematic structural view of a third embodiment of a swing motor of the present application.
  • Figure 11 is a perspective view of the embodiment shown in Figure 10;
  • FIG. 12 is a schematic structural view of an embodiment of an electric sprayer of the present application.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the first embodiment provides a diaphragm pump.
  • the diaphragm pump includes an oscillating motor and a pump assembly, and the oscillating motor can output a reciprocating oscillating motion, squeezing the diaphragm of the pump assembly under the reciprocating oscillating motion, compressing the fluid chamber, driving the pump assembly to aspirate and drain, and completing Spray function.
  • the swing motor includes:
  • U-shaped yoke 100 U-shaped yoke 100 has a first leg 110 and a second leg 120, the first leg 110 and the second leg 120 are wound with a coil 200;
  • the control circuit 300 is electrically connected to the coil 200, and generates an alternating pulse to make the U-shaped yoke 10
  • the end faces 111, 121 of the two legs of 0 generate alternating magnetic poles
  • the swing arm 400 swingable around the fulcrum, the swing arm 400 extends outward from the end faces 111, 121 of the U-shaped yoke 100, and is bounded by a fulcrum, and the end of the swing arm 400 near the U-shaped yoke 100 is an inner arm 420, the swing arm 400 is away from the U-shaped yoke 1
  • One end of 00 is an outer arm 430;
  • the second yoke 500 (which is referred to as the second yoke 500 in order to distinguish it from the U-shaped yoke 100) is mounted on the end of the inner arm 420 near the U-shaped yoke 100. ;
  • the permanent magnets are fixedly mounted on the second yoke 500 (eg, glued and fixed).
  • the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum, and are first permanent magnets in order of arrangement
  • the body 610, the second permanent magnet 620, the third permanent magnet 630, and the fourth permanent magnet 640 are first permanent magnets in order of arrangement
  • the body 610, the second permanent magnet 620, the third permanent magnet 630, and the fourth permanent magnet 640 are first permanent magnets in order of arrangement The body 610, the second permanent magnet 620, the third permanent magnet 630, and the fourth permanent magnet 640.
  • the polarities of the radial end faces 611, 641 of the first permanent magnet 610 and the fourth permanent magnet 640 are the same, the polarities of the radial end faces 621, 631 of the second permanent magnet 620 and the third permanent magnet 630 are the same, and the first permanent
  • the radial end surface 611 of the magnet 610 and the radial end surface 621 of the second permanent magnet 620 are opposite in polarity and are disposed corresponding to the end surface 111 of the first leg 110, and the radial end surface 631 of the third permanent magnet 630 and the radial direction of the fourth permanent magnet 640
  • the end faces 641 have opposite polarities and are disposed corresponding to the end faces 121 of the second legs 110, and the end faces of the four permanent magnets and the end faces of their corresponding legs have an air gap.
  • the four permanent magnets are sequentially distributed on the same circumference centered on the fulcrum means that the radii of the four permanent magnets to the fulcrum are substantially equal, that is, radially distributed along the center line of the swing.
  • the U-shaped yoke 100, the swing arm 400, the second yoke 500 and the permanent magnet are mounted in the housing 700, wherein the pivot point of the swing arm 400 is a swing shaft 410, and the swing shaft 410 is fixedly mounted on the housing. On the 700, the swing arm 400 is fitted over the swing shaft 410.
  • the four permanent magnets When the coil 200 is energized, the four permanent magnets will generate torque in the same direction of rotation. If the first and third permanent magnets 610, 630 generate the same magnitude of magnetic attraction to the U-shaped yoke 100 after energization, the second and fourth permanent magnets 620, 640 produce the same magnitude of magnetic repulsive force for the U-shaped yoke 100. In the reverse energization, the first and third permanent magnets 610, 630 generate the same magnitude of magnetic repulsive force for the U-shaped yoke 100, and the second and fourth permanent magnets 620, 640 generate the same magnitude of magnetic force for the U-shaped yoke 100. suction.
  • Each leg of the U-shaped yoke corresponds to two permanent magnets.
  • the design of the permanent magnet redundancy is a magnetic circuit design different from the prior art, so that the swing motor has a larger torque than the existing motor of the same power. When the magnetic flux is large, the driving power is reduced accordingly.
  • the four permanent magnets are simultaneously subjected to the force of the U-shaped yoke 100 in the same swinging direction, which can ensure that the swing arm 400 realizes the entire reciprocating swing process without external force.
  • the end faces of the first permanent magnet 610 and the fourth permanent magnet 640 are N poles, and the end faces of the second permanent magnet 620 and the third permanent magnet 630 For the S pole.
  • the coil 200 is energized, such that the end surface of the first leg 110 is N pole and the end surface of the second leg 120 is S pole, the N pole of the first leg 110 will generate suction to the S pole of the second permanent magnet 620, and The N pole of the first permanent magnet 610 generates a repulsive force.
  • the S pole of the second leg 120 will generate suction to the N pole of the fourth permanent magnet 640, and generate a repulsive force to the S pole of the third permanent magnet 630, thereby swinging the swing arm 400 from the position shown in FIG. To the position shown in Figure 4, a first swing is formed.
  • the end surface of the first leg 110 is S pole
  • the second The end face of the leg 120 is N pole
  • the S pole of the first leg 110 will generate a repulsive force to the S pole of the second permanent magnet 620 and generate a suction force to the N pole of the first permanent magnet 610.
  • the N pole of the second leg 120 will generate a repulsive force to the N pole of the fourth permanent magnet 640, and generate a suction force to the S pole of the third permanent magnet 630, thereby swinging the swing arm 400 from the position shown in FIG. In the position shown in Figure 5, a second swing is formed.
  • the coil 200 is connected to the control circuit 300, and the control circuit 300 generates an alternating pulse with adjustable pulse width, so that the end face of the U-shaped yoke 100 generates alternating magnetic poles, so that the permanent magnet generates suction torque and repulsive force.
  • the moment, or the repulsive torque and the suction torque drive the swing arm 400 to swing, thereby driving the corresponding mechanical unit to be swung by the swing arm 400.
  • the pump assembly includes:
  • a fluid chamber 910 a portion of the side wall of the fluid chamber 910 is a diaphragm
  • a fluid inlet passage (not shown) that communicates with the fluid chamber 910 for inputting fluid from the fluid source into the fluid chamber 910;
  • a fluid discharge passage (not shown) that communicates with the fluid chamber 910 for discharging the fluid from the fluid chamber 910;
  • a diaphragm push-pull rod 920 mounted on the outer arm of the swing arm and reciprocally oscillating with the outer arm under the driving of the swing motor to squeeze the diaphragm and compress the fluid chamber 910.
  • the control circuit generates an alternating pulse with adjustable pulse width, so that the moving direction of the permanent magnet alternates, thereby forming a reciprocating swing, so that the outer arm 430 of the swing arm 400 drives the diaphragm push-pull rod 920 to press the diaphragm to change the fluid chamber.
  • the gap between the first permanent magnet 610 and the second permanent magnet 620 may be smaller than the width of the end surface 111 of the first leg 110, and the third permanent magnet 630 and the fourth permanent magnet 640 The gap between them is smaller than the width of the end surface 121 of the second leg 120 to ensure that the legs of the U-shaped yoke 100 have sufficient force for each permanent magnet.
  • each of the permanent magnets may be the same as or different from the width of the end faces of the legs of the U-shaped yoke 100.
  • the width referred to herein refers to the width in the direction indicated by the arrow in Fig. 3.
  • the end faces 111, 121 of the first leg 110 and the second leg 120 may have a circular arc surface matching the circumference of the permanent magnet swinging ridge, that is, the first leg 110 There is only an air gap distance between the arcuate surface formed by the end faces 111, 121 of the second leg 120 and the circumferential arc surface formed by the permanent magnet swinging ridge.
  • the radial end faces of the four permanent magnets are arranged as shown in FIG. 6, and are substantially rectangular.
  • the radial end faces of the permanent magnets may be disposed in other shapes. As shown in FIG.
  • the radial end faces of the first permanent magnet 610a and the second permanent magnet 620a are disposed such that the adjacent sides are inclined and parallel to each other, and the third The radial end faces of the permanent magnet 630a and the fourth permanent magnet 640a are disposed such that the adjacent sides are inclined and parallel to each other, that is, the second permanent magnet 620a and the fourth permanent magnet 640a are substantially right-angled trapezoids disposed in the same direction, and the first permanent magnet 610a And the third permanent magnet 630a is also a right-angled trapezoid of the same shape, but the direction is opposite to the second permanent magnet 620a and the fourth permanent magnet 640a; or, as shown in FIG. 8, the radial end faces of the four permanent magnets are both set to They are inclined and parallel to each other, and are each substantially parallelogram.
  • the permanent magnets are staggered, and the output torque curve can be improved to make the output torque smooth.
  • the outer arm 430 has a force output portion 431 having a curved outer wall
  • the diaphragm push-pull rod 920 has a groove 921 matching the force output portion 431.
  • the force output portion 43 1 is mounted in the recess 921, and the curved outer wall acts on the diaphragm push-pull rod 920 to drive the diaphragm push-pull rod 920 to swing.
  • the fluid chamber 910 may further be two (one or more), and the diaphragm push-pull rod 920 is disposed in the middle of the two fluid chambers 910. When the diaphragm push-pull rod 920 swings left and right, the two fluid chambers 910 are sequentially pressed. .
  • the outer arm 430 of the swing arm 400 is an output arm, and the outer force arm is smaller than the inner force arm.
  • the inner force arm distance is the distance from the radial end surface of the permanent magnet to the center of the swing shaft 410
  • the outer force arm distance is the center of the swing shaft 410 to the outer arm 430.
  • the ratio of the inner wall to the outer wall length can also be designed according to the demand for the amplitude of the swing.
  • the first and second permanent magnets 610, 620 and the first leg 110 form a closed magnetic path through the air gap, and the third and fourth permanent magnets 630 and 640. Magnetic flux leakage can be avoided by forming a closed magnetic circuit with the second leg 120 through the air gap.
  • the permanent magnet and the second yoke 500 are mounted on the swing arm 400, so that other portions of the swing arm 400 do not affect the magnetic field.
  • a charging module 310 and a rechargeable battery 320 may be further included.
  • the rechargeable battery 320 is used for power supply, and the charging module 310 is connected to the control circuit for charging the rechargeable battery 320.
  • the control circuit may further include a status indication module 330, a torque adjustment module 340 and a switch, the status indication module 330 is used to indicate the working state of the motor, and the switch is used to trigger a signal to the control circuit to control the closed motor.
  • control circuit 300 can determine the number of mechanical oscillations by counting the energization pulses of the coil, and the output signal gives a corresponding indication to the operating condition of the mechanical unit.
  • an elastic body 810 for absorbing the moment of inertia of the swing arm 400 in the position of the swing arm 400 is disposed on both sides of the swing arm 400, and the elastic characteristic of the elastic body 810 is More than two curves
  • the elastic body 810 is mainly used to absorb the moment of inertia of the swing arm 400 under no-load condition, and the elastic force increases with the compression stroke. Before the position is reached, the elastic force is small, and the spring force is rapidly increased when the position is fast.
  • the elastic characteristic of the elastic body 810 can ensure that the elastic body 810 does not have excessive influence on the swing of the swing arm 400 under load (the swinging distance of the swing arm 400 is attenuated under load), and only the swing arm 400 is excessively squeezed under no-load condition.
  • the elastomer 8 10 will generate a large restoring force, preventing the swing arm 400 from hitting the surrounding components in an unloaded state.
  • the elastomer 810 can be mounted on both sides of the inner arm 420 and/or the outer arm 430. This embodiment mounts the elastomer 810 at a position between the inner arm 420 and the housing 700.
  • the elastomer 810 may be a silicone member or a rubber member in the shape of a sphere, an elliptical sphere, a cylinder, an elliptical cylinder or a semicircle.
  • the swing arm of the swing motor swings around a fulcrum, and the life of the fulcrum and the swing arm is the life of the motor.
  • the swing arm is mounted on the swing shaft through a bearing, and the life of the bearing is the life of the motor, so The life of the motor is extremely long and cannot be compared with the existing brushed DC motor.
  • the swing arm can be directly attached to the swing shaft, and the life of the socket structure is the life of the motor.
  • the diaphragm pump provided in this embodiment does not increase the current sharply due to the stalling, the operating current changes little, and the swing frequency does not change with the resistance.
  • the pressure is applied to the corresponding force ⁇ , and the driving torque is balanced, so that the pressure does not increase continuously, and the corresponding back pressure regulating device is not required, which simplifies the diaphragm pump.
  • the driving torque By changing the driving torque, the output pressure of the diaphragm pump can be changed, and an electronic pressure regulation that is easy to control is realized.
  • the diaphragm pump has a lower operating current than the brushed DC motor pump, and the energy saving effect is obvious, and there is no abnormal large current, and the battery life is longer.
  • the electric sprayer pump with the pump has a simple structure, the battery capacity is reduced, the total weight is reduced, and the spray function of various liquids can be applied, which is an energy-saving and environmentally-friendly design.
  • the diaphragm pump provided in this embodiment can be used for pumping various fluid media, such as pure water, pesticides, gases, etc.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • the second embodiment provides another swing motor.
  • the oscillating motor is improved in the structure shown in the first embodiment.
  • a moving track of the first permanent magnet 610 and/or the fourth permanent magnet 640 may be disposed on the outer side of the U-shaped yoke 100 and the first permanent magnet 610 and/or the fourth permanent magnet 640 may be disposed to detect the in-position state of the first permanent magnet 610 or the fourth permanent magnet 640.
  • the detecting element 820 is connected to the control circuit 300.
  • the detecting element 820 can detect whether the first permanent magnet 610 and/or the fourth permanent magnet 640 reach the detecting position or reach the turn of the detecting position, thereby determining the magnitude of the resistance, thereby changing the magnitude of the current. For example, if the first permanent magnet 610 and/or the fourth permanent magnet 640 are between the turns, the resistance is large, and the control circuit 300 can control the increase of the current, and conversely, reduce the current.
  • the detecting element 820 can select a Hall element, and can also select other detecting elements 820 that can be used for position detection.
  • control circuit 300 can change the driving current by analyzing the torque variation of the driving unit, thereby achieving stable driving and reducing power consumption.
  • the third embodiment provides another swing motor.
  • the oscillating motor is modified in the structure shown in Embodiment 1, and a resonant elastic member for generating resonance at a constant oscillating frequency is added.
  • the resonant elastic member is fixed at one end of the swing arm and the other end is connected to the outer arm or the inner arm.
  • the resonant elastic member shown in FIG. 10 is a linear spring steel wire. Further, other shapes of elastic members may be used instead, and the central portion of the resonant elastic member is curved as shown in FIG.
  • Embodiment 4 provides an electric sprayer.
  • the electric sprayer includes an inlet assembly, a discharge assembly, and a diaphragm pump.
  • the diaphragm pump may adopt the structure shown in any of the above embodiments.
  • the liquid inlet assembly is in communication with the fluid inlet passage and is provided with a first one-way valve for controlling the one-way flow of the fluid.
  • the first one-way valve may be disposed in the fluid inlet passage of the diaphragm pump or may be disposed in the liquid inlet assembly. on.
  • the liquid discharge assembly is in communication with the fluid discharge passage and is provided with a second one-way valve for controlling the one-way flow of the fluid.
  • the second one-way valve may be disposed in the fluid discharge passage of the diaphragm pump or may be disposed on the liquid discharge assembly.
  • the liquid inlet assembly includes a liquid inlet tube 1010 and a liquid storage tank 1020, and the liquid inlet tube 1010 will be a liquid storage tank.
  • the 1020 is in communication with the fluid inlet channel for easy access to the fluid.
  • a filter device 1030 may also be disposed on the inlet pipe 1010 for filtering the liquid.
  • the liquid discharge assembly includes a liquid discharge pipe 1040, a spray head 1050, and a shutoff valve 1060.
  • the liquid discharge pipe 1040 is in communication with the fluid discharge passage
  • the spray head 1050 is in communication with the liquid discharge pipe 1040
  • the shutoff valve 1060 is disposed in the liquid discharge pipe. On the 1040.
  • the electric sprayer can be electronically regulated, the pump structure is simple, the working current is stable, the power is reduced, the battery capacity is reduced, the life is long, the total weight is reduced, and the utility model can be applied to various liquids.
  • the spray function is an energy-saving and environmentally friendly design.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe à diaphragme et un pulvérisateur électrique, la pompe à diaphragme comprenant une fourche en U (100), quatre aimants permanents et un bras mobile (400), des faces d'extrémité (111, 121) de deux branches (110, 120) de la fourche en U pouvant générer des polarités magnétiques alternées sous la commande d'un circuit de commande (300). Les quatre aimants permanents sont montés à demeure sur un bras intérieur (420) du bras mobile au moyen d'une seconde fourche (500). Les quatre aimants permanents sont un premier aimant permanent (610), un deuxième aimant permanent (620), un troisième aimant permanent (630) et un quatrième aimant permanent (640), respectivement, qui sont répartis de manière séquentielle dans une même circonférence centrée au niveau d'un point de pivot. Le premier aimant permanent et le quatrième aimant permanent ont la même polarité au niveau de faces d'extrémité radiales (611, 641) ; le deuxième aimant permanent et le troisième aimant permanent ont la même polarité au niveau de faces d'extrémité radiales (621, 631), qui est opposée à la polarité au niveau de la face d'extrémité radiale du premier aimant permanent. Lorsque la bobine (200) est alimentée, les quatre aimants permanents génèrent un couple dans la même direction de rotation, et sous l'action des polarités magnétiques alternées au niveau des faces d'extrémité des deux branches de la fourche en U, les quatre aimants permanents effectuent une oscillation alternative ; en conséquence, un bras extérieur (430) du bras mobile (400) amène une tige de poussée et de traction de diaphragme (920) à presser le diaphragme, modifiant ainsi la taille d'une chambre de fluide (910), ce qui permet d'obtenir l'admission et l'évacuation de liquide.
PCT/CN2016/112182 2016-02-19 2016-12-26 Pompe à diaphragme et pulvérisateur électrique Ceased WO2017140180A1 (fr)

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