WO2020220503A1 - Rondelle haute pression amphibie rechargeable résistante à l'eau - Google Patents

Rondelle haute pression amphibie rechargeable résistante à l'eau Download PDF

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Publication number
WO2020220503A1
WO2020220503A1 PCT/CN2019/099762 CN2019099762W WO2020220503A1 WO 2020220503 A1 WO2020220503 A1 WO 2020220503A1 CN 2019099762 W CN2019099762 W CN 2019099762W WO 2020220503 A1 WO2020220503 A1 WO 2020220503A1
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WO
WIPO (PCT)
Prior art keywords
motor
pump
waterproof
rechargeable
housing
Prior art date
Application number
PCT/CN2019/099762
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English (en)
Chinese (zh)
Inventor
林有余
刘楷
蔡济波
Original Assignee
江苏苏美达五金工具有限公司
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Application filed by 江苏苏美达五金工具有限公司 filed Critical 江苏苏美达五金工具有限公司
Publication of WO2020220503A1 publication Critical patent/WO2020220503A1/fr

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    • 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
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • the invention belongs to the technical field of hand-held cleaning machines, and in particular relates to a waterproof type rechargeable amphibious high-pressure cleaning machine.
  • the high-pressure cleaner is a kind of equipment that uses water or a mixture of cleaning agents as the cleaning medium and uses high-pressure water to clean the surface of objects.
  • the high-pressure cleaner can be used to clean cars, courtyards, floors, railings, doors and windows, etc. It is more Efficient and convenient, its main components are spray gun and host.
  • the host includes motor, pump and battery or external power cord.
  • the spray gun and host are connected by a water pipe.
  • the spray gun is responsible for forming water streams of different shapes according to actual needs, and the host is responsible for removing water from the municipal Tap water or buckets are converted into high-pressure water flow and delivered to the spray gun. Commonly, the host is placed on the ground fixedly or movably. The host has a large volume and heavier weight.
  • the use of the spray gun is used to work, and the scope of use is limited. There are still many inconveniences.
  • Patent US20090045271A1 discloses a hand-held electric pressure washer, including a pump 16, a motor 14, a casing 20, and a handle 62 and a side handle 68 connected to the casing 20.
  • the nozzle 58 is connected to the casing 20 through a gun barrel 54.
  • This patent What is actually disclosed is a low-pressure washer whose pressure cannot meet the requirements of a high-pressure washer, because the international standard clearly defines a high-pressure washer as a working pressure greater than or equal to 2.5MPa. In actual use, the working pressure can only exceed 2.5MPa.
  • the waterproof level of the corresponding handheld high-pressure cleaning machine in the standard is not lower than IPX7, and the machine is required to work under water for a short time.
  • the rear of the motor 14 is provided with a cooling fan 18, and the corresponding position of the casing 20 is provided with a number of vents 22.
  • the existence of the vents 22 makes the waterproof level of the handheld electric pressure washer reach The temperature rise and noise cannot be effectively controlled without the requirements of hand-held high-pressure cleaners. What the market really needs is a handheld high-pressure cleaner.
  • the contradiction between motor cooling and waterproofing is an industry problem that has not been solved.
  • Patent CN205570600U also discloses a handheld washing machine, which aims to improve the portability of the washing machine and solve the problem of mobility.
  • This technical solution differs from the patent US20090045271A1 in that US20090045271A1 is connected to an external power source through the power cord 30, and the external power source supplies power to the motor 14, while the CN205570600U machine includes a battery 170, which is powered by the battery, and replaces the external power source with the battery.
  • the patent CN205570600U also discloses only a low-pressure washer, not a handheld high-pressure washer. Its working pressure cannot reach or exceed the 2.5MPa pressure required by the high-pressure washer.
  • CN205570600U does not disclose any motor cooling and waterproof sealing solutions.
  • the provided is not a hand-held high-pressure washer. From the CN205570600U manual, it can be seen that there is a cooling air vent at the end of the motor. The corresponding position on the casing must be left with a vent. Its waterproof level cannot meet the waterproof level requirements of a handheld high-pressure washer. And there are defects and shortcomings such as high noise and not waterproof.
  • the high-speed operation of the motor and the pump will bring about a sharp increase in temperature, which is not only transmitted to the user through the shell, but the high temperature and hot hands seriously affect the comfort of use, but also affect the efficiency and life of the machine.
  • the noise generated by the operation of the open casing and the motor and the rotation of the fan directly affects the user's operating comfort.
  • a hand-held high-pressure cleaning that is convenient to move, can be directly connected to an external water source through a water pipe, pressure can meet the requirements of a high-pressure washer, waterproof level meets the requirements of a hand-held high-pressure washer, high cleaning ability, high operating efficiency, low temperature, silent The machine is especially necessary.
  • a high-pressure washer that can be placed under water is designed, and the handheld spray gun is connected through a high-pressure water pipe, which will be very light and easy to operate when used.
  • the purpose of the present invention is to overcome the deficiencies in the prior art and provide a hand-held high-pressure cleaner, which has the characteristics of being portable, light weight, strong cleaning power and low noise, especially when working under water to achieve complete silence.
  • a waterproof rechargeable amphibious high-pressure cleaner which includes:
  • the motor pump unit housed in the housing;
  • the motor pump unit includes:
  • a motor the motor includes a motor shaft, a rotor, and a stator core set in the motor housing, the rotor is installed on the motor shaft, and the stator core is located outside the rotor;
  • Mini pump mini pump includes pump housing, pump inlet and high pressure outlet;
  • the motor housing has a sealed cavity I and an inner shell.
  • the rotor and the stator core are arranged in the sealed cavity I.
  • the inner surface of the inner shell is close to the stator core to form a heat conduction channel;
  • the motor shell is provided with at least one way through the inner shell
  • the shell is a shell that seals the motor pump unit and the rechargeable battery, and its sealing and waterproof level is not lower than IPX7.
  • the motor housing is further provided with a branch channel communicating with the water inlet end of the cooling channel I and a confluence channel communicating with the water outlet end of the cooling channel I.
  • cooling channel I extends in a direction parallel to the axis of the motor housing
  • the shunt channel extends in a diameter direction parallel to the motor housing
  • the confluence channel extends in the circumferential direction of the motor housing.
  • the motor housing includes an end cover and a housing that are axially sealed and connected to form a sealed cavity I.
  • the housing is a pot-shaped body with one end open and the other end closed.
  • the end cover is sealed and installed at the opening of the housing.
  • Connect the mini pump; the water inlet I, the cooling channel, the shunt channel and the confluence channel are all arranged on the casing, and the water outlet I is arranged on the end cover.
  • the opening of the casing is provided with an annular groove extending along the circumference thereof, and the end cover and the annular groove are sealed and connected to form a confluence channel.
  • bearing II is installed in the center hole of the end cover, bearing I is installed in the center hole of the casing, and both ends of the motor shaft are installed in bearing I and bearing II respectively; the shunt passage passes near the outside of the casing at the installation position of bearing I .
  • the outer surface of the cooling channel I is provided with a plurality of heat conducting ribs I extending to the outer surface of the motor housing.
  • the motor is a rare earth permanent magnet brushless motor
  • the outer diameter of the stator core does not exceed 90mm
  • the waterproof level of the motor or the waterproof rechargeable amphibious high-pressure cleaner is not lower than IPX7
  • the waterproof rechargeable amphibious high-voltage The weight of the washing machine is not more than 4.2kg, and the minimum working pressure of the mini pump is not less than 2.5Mpa.
  • the pump housing is provided with at least one cooling channel II, a water inlet II communicating with one end of the cooling channel II, and a water outlet II communicating with the other end of the cooling channel II; the water inlet II is connected to an external water source or water outlet I, the water outlet II Connect the pump inlet.
  • the water inlet II is located at the proximal position from the motor, and the water outlet II is located at the far end from the motor;
  • the outer surface of the cooling channel II is provided with a number of heat conducting ribs II extending to the outer surface of the pump casing; when the cooling channel II extends in the circumferential direction of the pump casing, the cooling The outer surface of channel II is provided with a number of heat conducting ribs III extending to the outer surface of the pump casing
  • the pump casing includes a pump head and a pump casing that are connected back and forth to form a sealed cavity II.
  • the cooling channel II, the water outlet II and the water inlet II are all provided on the pump casing.
  • an end cover is provided at one end of the pump housing close to the motor, and the end cover is connected with the motor.
  • the mini pump is a plunger pump, which also includes at least one plunger and a swash plate.
  • the plunger and the swash plate are both arranged in the sealed cavity II of the pump housing.
  • the swash plate is driven by the motor to drive the plunger along Linear motion.
  • the pump housing of the mini pump and the motor housing of the motor are connected by a snap connection.
  • a reduction mechanism is also provided between the mini pump and the motor, and the reduction mechanism is a planetary gear reduction mechanism and is arranged in an end cover connected between the mini pump and the motor.
  • mini pump is coaxially connected with the motor or connected at a certain angle
  • the housing When the mini pump is coaxially connected with the motor, the housing has a coaxially connected receiving part and a hand-held part;
  • the housing When the mini pump and the motor are connected at a certain angle, the housing has a receiving part and a holding part connected at the same angle;
  • the motor pump unit and the rechargeable battery are arranged in the receiving part.
  • the rechargeable battery is a battery pack with a battery shell, and the rated voltage of the battery pack is 18-60V; the battery pack is detachably arranged in the waterproof battery compartment of the hand-held part, and the waterproof battery compartment is provided with a battery that can be opened and closed.
  • the waterproof battery compartment cover of the bag is sealed with the waterproof battery compartment through a sealing strip.
  • the outer shell includes two half-shells connected by elastic sealing tape or welding.
  • the hand-held spray gun also includes a hand-held spray gun and a high-pressure water pipe.
  • One end of the high-pressure water pipe is connected with a high-pressure water outlet, and the other end is connected with a hand-held spray gun; the handle of the hand-held spray gun is provided with a trigger for controlling the start and stop of the motor pump unit.
  • it also includes a straight-pipe spray gun, which is connected to the high-pressure water outlet.
  • the invention adopts water cooling method to cool the motor, so that the whole machine can be fully sealed design, the waterproof level can reach IPX7 or higher, the machine is safer and more reliable, and meets the waterproof requirements of hand-held high-pressure cleaners, and the motor power is also due to the cooling capacity As a result, the working pressure of the whole machine reaches 2.5MPa, which meets the standard of hand-held high-pressure cleaner and has stronger cleaning ability.
  • the motor uses non-circulating water for cooling, the motor temperature is significantly reduced, the motor efficiency is improved, and the output pressure and flow rate are improved under the same power consumption.
  • a permanent magnet brushless motor is used, it can effectively prevent irreversible demagnetization. Causes the problem of motor failure, and the reliability of the motor is greatly improved.
  • the pump body is water-cooled while the motor is water-cooled to further reduce the temperature of the pump, so that the overall temperature rise is reduced, and the life of the entire machine is simultaneously improved.
  • Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention.
  • FIG. 2 is a perspective view of the structure of the motor pump unit in the embodiment shown in FIG. 1;
  • FIG 3 is a bottom view of the structure of the motor pump unit in the embodiment shown in Figure 1 (the motor is separated from the mini pump);
  • FIG 4 is a front view of the structure of the motor pump unit in the embodiment shown in Figure 1 (the motor is connected to the mini pump);
  • Figure 5 is a cross-sectional view along the section line AA in Figure 4;
  • Figure 6 is a cross-sectional view along section line BB in Figure 4.
  • Figure 7 is a perspective view of the structure of the pump housing in the embodiment shown in Figure 1;
  • Figure 8 is a perspective sectional view of the motor in the embodiment shown in Figure 1;
  • Figure 9 is a partial enlarged view of C in Figure 8.
  • Figure 10 is a schematic structural diagram of a second preferred embodiment of the present invention.
  • Figure 11 is a schematic structural diagram of a third preferred embodiment of the present invention.
  • Fig. 12 is a schematic diagram of the use of the embodiment shown in Fig. 11.
  • a hand-held high-pressure washer 35 includes a straight tube spray gun 38, a motor pump unit 20, a rechargeable battery 52, and a casing 36.
  • the casing 36 seals the motor pump unit 20 and the rechargeable battery 52, and the rechargeable battery 52 supplies power to the motor pump unit 20.
  • the motor pump unit 20 includes a mini pump 21 and a motor 22.
  • the motor 22 is connected to the mini pump 21 to drive the mini pump 21 to work.
  • the connection here means that the motor 22 and the mini pump 21 need to be connected structurally to be realized in the housing 36
  • the mini pump 21 has a pump water inlet 13 and a high-pressure water outlet 14.
  • the high-pressure water outlet 14 is directly connected to the straight-pipe spray gun 38 to spray the high-pressure water stream in a certain form to realize the adjustment of the cleaning range.
  • the motor 22 includes a motor housing 29; a motor shaft 9, a rotor 8 and a stator core 7 are installed in the motor housing 29; both ends of the motor shaft 9 are respectively mounted on the motor housing 29 through a bearing I11 and a bearing II12. Inside, the rotor 8 is mounted on the motor shaft 9 to transmit torque, and the stator core 7 is located outside the rotor 8 and generates torque through the electromagnetic principle to rotate the rotor 8.
  • the motor housing 29 has a sealed cavity I30 and an inner shell 63 located in the inner ring of the sealed cavity I30.
  • the inner shell 63 surrounds the outer circumference of the stator core 7 and makes the stator core 7 close to the inner surface of the inner shell 63 In order to form a heat conduction channel, the heat generated by the stator core 7 is thus transferred to the inner shell 63 to facilitate subsequent heat dissipation.
  • the motor housing 29 is provided with at least one cooling channel I17 passing through the inner shell 63, especially the outer surface of the inner shell 63, a water inlet I19 communicating with one end of the cooling channel I17, and a communicating cooling channel I17.
  • One end of the water outlet I23 and the water inlet I19 are sealed and installed with a water inlet joint 46 through a water inlet joint sealing ring 45.
  • the water inlet joint 46 can be connected with the water inlet pipe connector 47 of the water inlet pipe 48.
  • the other end of the water inlet pipe 48 is connected to an external water source, and a water outlet connector 27 is installed at the water outlet I23 through a water outlet connector sealing ring 68.
  • the water outlet connector 27 can be directly connected to the pump water inlet 13 through the connecting pipe 10.
  • the cleaning water from the external water source when not pressurized, first acts as cooling water to absorb the heat transferred from the stator core 7 to the inner shell 63 in the cooling channel I17, and then enters the mini pump 21 for pressure to form a high-pressure water flow for cleaning . Due to the water-cooling method, the housing 36 has no air-cooled openings as a whole, and can be completely sealed to reach a higher waterproof level IPX7, which meets the standards of hand-held high-pressure washers.
  • the power of the motor 22 can also be improved, so that the water outlet pressure of the mini pump 21 reaches the high pressure standard, that is, not less than 2.5 MPa, which greatly improves the cleaning ability.
  • the number of cooling channels I17 can be set to more than two.
  • the motor housing 29 is also provided with a shunt channel 15 communicating with the water inlet of the cooling channel I17 and a confluence communicating with the water outlet of the cooling channel I17. Channel 18.
  • the cooling water enters the shunt passage 15 through the water inlet I19, and then is shunted to each cooling passage I17 to cool the motor housing 29, and then is collected through the confluence passage 18 and discharged from the water outlet I23 to the mini pump 21.
  • the motor housing 29 includes an end cover 5 and a housing 6 which are axially sealed and connected to form a sealed cavity I30.
  • the housing 6 is an integrally formed tank with one end open and the other closed.
  • the end cover 5 is sealed and installed at the opening of the casing 6, and the end cover 5 is connected with the mini pump 21 to realize the connection and fixation of the motor 29 and the mini pump 21.
  • the end cover 5 is close to the mini pump 21, and the casing 6 is far away from the mini pump 21; the water inlet I19, the cooling channel 17, the branch channel 15 and the confluence channel 18 are all provided on the casing 6, and the water outlet I23 is provided on the end cover 5.
  • the cooling passage I17 extends in a direction parallel to the axis of the casing 6, the shunt passage 15 extends in a diameter direction parallel to the casing 6, and the confluence passage 18 extends in the circumferential direction of the casing 6.
  • the confluence channel 18 can be arranged in this way.
  • the opening of the housing 6 has an annular groove 69 extending in the circumferential direction.
  • the inner side of 69 forms a ring of shell inner wall 66, and the outer side forms a ring of shell outer wall 67.
  • the end cover 5 also has a ring of end cover inner wall 64 and a ring of end cover outer wall 65.
  • the end cover inner wall 64 passes through the first sealing ring 49
  • a sealed connection is formed with the inner wall 66 of the shell, and the outer wall 65 of the end cover forms a sealed connection with the outer wall 67 of the shell through the second sealing ring 50.
  • the annular groove 69 forms a confluence channel 18 for cooling water to flow.
  • a bearing II12 is installed in the center hole of the end cover 5
  • a bearing I11 is installed in the center hole of the housing 6, and both ends of the motor shaft 9 are installed in the bearing I11 and the bearing II12, respectively.
  • the outer surface of the cooling channel I17 is provided with a number of heat conducting ribs I31 extending to the outer surface of the motor housing 29. It can be extended to the housing 6 or to the end cover 5 to further improve the cooling capacity.
  • a reduction mechanism 4 is provided between the mini pump 21 and the motor 22.
  • the end cover 5 has a cylindrical structure and therefore has a receiving cavity, and the speed reduction mechanism 4 is arranged in the receiving cavity of the end cover 5.
  • the reduction mechanism 4 is a planetary gear reduction mechanism.
  • the motor 22 is a rare earth permanent magnet brushless motor.
  • the mini pump 21 also adopts a water cooling method for heat dissipation.
  • the mini pump 21 is a plunger pump, which includes at least one plunger 1, a swash plate 33 and a pump housing 70, preferably three plungers 1.
  • the pump housing 70 has a sealed cavity II2.
  • the sealed cavity II2 contains the plunger 1, the swash plate 33 and the lubricating coolant.
  • the plunger 1 reciprocates in the plunger cavity, and its one end in the sealed cavity II2 is connected to the swash plate 33.
  • the disk surface is in sliding contact, and the swash plate 33 is driven by the motor 22 to drive the plunger 1 to move in a straight line.
  • the pump housing 70 is provided with at least one cooling channel II24, a water inlet II25 connected to one end of the cooling channel II24, and a water outlet II26 connected to the other end of the cooling channel II24.
  • the water inlet II25 can be directly connected to an external water source through the water inlet pipe 48, or
  • the water outlet I23 is connected through the water outlet connector 27. When the latter connection is adopted, the water outlet I23 does not need to be connected to the pump water inlet 13 through the connecting pipe 10.
  • the water outlet II26 is connected to the connecting pipe joint 18 of the connecting pipe 10 so that the cooling water enters the pump water inlet 11 through the connecting pipe 10. The water flows through the water inlet pipe 48 into the cooling channel II24.
  • the heat generated by the internal mechanical components during the operation of the mini pump 21 will be transferred to the pump housing 70 through the lubricating coolant, and then to the cooling channel II24. It is taken away by the cooling water flowing in it to achieve more efficient heat dissipation.
  • the cooling water can independently enter the cooling channel I17 and the cooling channel II24 to dissipate the heat at the same time, or it can enter the cooling channel I17 and the cooling channel II24 successively to both in turn Perform heat dissipation.
  • the pump housing 70 includes a pump head 43 and a pump housing 3 that are connected back and forth to form a sealed cavity II2.
  • the cooling channel II24, the water inlet II25 and the water outlet II26 are all provided on the pump housing 3.
  • Various valves and plungers 13 are installed in the pump head 43, and a swash plate 14 is installed in the pump housing 3.
  • the water inlet II25 is located at the proximal position from the motor 22, and the water outlet II26 is located at the far end from the motor 22.
  • the outer surface of the cooling channel II24 is provided with a number of circumferential The direction extends to the heat conducting rib II32 on the outer surface of the pump casing 3.
  • the outer surface of the cooling channel II24 is provided with a plurality of heat conducting ribs III16 extending to the outer surface of the pump casing 3 in the axial direction.
  • the pump casing 3 can also have cooling channels II24 in two extending directions at the same time.
  • the cooling channel II24 extending in the circumferential direction is provided at one end of the pump casing 3 close to the motor 22, which is essentially an annular groove provided on the end surface. When the end is connected to the end cover 5, it is sealed by the end cover 5 to form a cooling channel II24 for cooling water to flow inside.
  • the cooling channel II24 extending in the axial direction can communicate with the cooling channel II24 extending in the circumferential direction and the water outlet II26.
  • the mini pump 21 and the motor 22 can also be connected by a buckle 34 to further reduce the overall size.
  • the mini pump 21 and the motor 22 are connected at a certain angle.
  • the housing 36 has a receiving portion 71 and a hand-holding portion 37 connected at the same angle, so that the housing 36 has a pistol shape, which is convenient for grasping operation by human hands; the motor pump unit 20,
  • the rechargeable battery 52 and the battery management module 57 that controls the rechargeable battery 52 are both provided in the accommodating portion 71.
  • a power switch 44 is provided on the inner side of the handle 37.
  • the power switch 44 is provided in the form of a trigger so as to control the start and stop operations of the motor pump unit 20.
  • the rechargeable battery 52 is a battery pack 39 with a battery shell, the rated voltage of the battery pack 39 is 18-60V; the battery pack 39 is detachably arranged in the waterproof battery compartment 40 of the hand-held part 37, and the waterproof battery compartment 40 is provided with opening and closing To take and place the waterproof battery compartment cover 41 of the battery pack 30, the waterproof battery compartment cover 41 is sealed with the waterproof battery compartment 40 through the sealing strip 42.
  • the housing 36 includes two half-shells connected by elastic sealing tape 53 or welding.
  • the so-called two half-shells can be the upper and lower half-shells, or the front and rear half-shells.
  • the casing 6 is provided with a lead-out hole from which the power supply wire 51 is drawn, and the motor lead 51 is sealed at the lead-out hole, so as to ensure that the inside of the motor is sealed and ensure electrical safety.
  • the size of the receiving portion 60 of the housing 36 should not be too large, so the outer diameter of the stator core 7 does not exceed 90 mm, and furthermore, the outer diameter of the stator core 7 is 38-58 mm. Similarly, in order to reduce the fatigue of hand-held use, the weight of the hand-held high-pressure cleaner 35 does not exceed 4.2 kg.
  • the difference between this embodiment and the first embodiment is that the power switch 44 is provided on one side of the handheld portion 37 and is provided in the form of a button to realize the start and stop control of the motor pump unit 20.
  • the usage is the same as the handheld high-pressure cleaner in the first embodiment, so it will not be repeated.
  • the handheld high-pressure cleaner 35 includes a handheld spray gun 56 and a high-pressure water pipe 55.
  • One end of the high-pressure water pipe 55 is connected to the high-pressure water outlet 14 and the other end is connected to a hand-held spray gun 56.
  • the mini pump 21 is axially connected to the motor 22, and correspondingly, the housing 36 has a receiving portion 71 and a hand-held portion 37 that are axially connected, so that the hand-held high-pressure cleaner 35 is more compact.
  • the handle 60 of the hand-held spray gun 56 is provided with a trigger 61 for controlling the start and stop of the motor pump unit 20.
  • the hand-held high-pressure cleaner 35 when in use, can be used as a submersible pump into the bucket 59 containing the cleaning medium 58, the hand-held spray gun 56 is held by the user, and then pull the trigger 61 to make the motor pump unit At this time, the cleaning medium 58 will directly pass through the water inlet I19 into the cooling channel I17 and the cooling channel II24 to cool the motor 22 and the mini pump 21, and then pressurized by the mini pump 21 and enter the handheld spray gun 56 through the high pressure water pipe 55 It is finally sprayed through the gun head 62 to achieve the purpose of cleaning. Since the hand-held high-pressure cleaner 35 has good waterproof capability, it can be directly put into the cleaning medium 58 for use, which can solve the problem of inconvenient cleaning due to the large distance between the faucet and the cleaning object.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

La présente invention concerne une rondelle haute pression amphibie rechargeable résistante à l'eau comprenant un boîtier (36), une unité de motopompe (20) et une batterie rechargeable (52). Le dispositif de motopompe comprend un moteur (22) et une mini pompe (21). Le moteur comprend un arbre de moteur (9), un rotor (8) et un noyau de fer de stator (7) disposé à l'intérieur d'un boîtier de moteur (29). La mini pompe (13) comprend une pompe d'entrée d'eau (13) et une pompe de sortie d'eau (14). Le boîtier de moteur comprend une cavité étanche (30) et un boîtier interne (63). Le rotor et le noyau de fer de stator sont disposés dans la cavité étanche. Le noyau de fer de stator s'adapte étroitement au boîtier interne pour former un canal de conduction thermique. Le boîtier de moteur comporte au moins un canal de refroidissement (17), une entrée d'eau (19) et une sortie d'eau (23). L'entrée d'eau est reliée à une source d'eau externe, et la sortie d'eau est en communication avec la pompe d'entrée d'eau. La rondelle utilise de l'eau non circulante pour refroidir un moteur, ce qui augmente la puissance du moteur et une pression de fonctionnement de la rondelle.
PCT/CN2019/099762 2019-04-29 2019-08-08 Rondelle haute pression amphibie rechargeable résistante à l'eau WO2020220503A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910353085.4 2019-04-29
CN201910353085.4A CN110052342B (zh) 2019-04-29 2019-04-29 一种防水型充电式水陆两用高压清洗机

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