WO2020047804A1 - 手持式高压清洗机 - Google Patents

手持式高压清洗机 Download PDF

Info

Publication number
WO2020047804A1
WO2020047804A1 PCT/CN2018/104424 CN2018104424W WO2020047804A1 WO 2020047804 A1 WO2020047804 A1 WO 2020047804A1 CN 2018104424 W CN2018104424 W CN 2018104424W WO 2020047804 A1 WO2020047804 A1 WO 2020047804A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
water outlet
pump
cavity
water
Prior art date
Application number
PCT/CN2018/104424
Other languages
English (en)
French (fr)
Inventor
乔勇
Original Assignee
苏州宝时得电动工具有限公司
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 苏州宝时得电动工具有限公司 filed Critical 苏州宝时得电动工具有限公司
Priority to JP2019522706A priority Critical patent/JP6899432B2/ja
Priority to PCT/CN2018/104424 priority patent/WO2020047804A1/zh
Publication of WO2020047804A1 publication Critical patent/WO2020047804A1/zh

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical

Definitions

  • the invention relates to a handheld high-pressure cleaner.
  • the environment and the activities are more close to nature, and the activities and animals involved are more likely to get dirty and need to be cleaned in time.
  • cars, motorcycles, and bicycles must be covered with mud. After the rafts of ships, etc., the mud and grass attached to the hull also need to be cleaned. Horses and users also sweat and sticky mud. It is best to shower or rinse in time to avoid discomfort.
  • the aforementioned high-pressure cleaner is not suitable for being carried around in various outdoor activities due to its large size and weight. Because the aforementioned high-pressure cleaner uses an AC power supply, it is difficult to find a matching power source in outdoor activities. Users often can only tolerate the stains during the event, and then clean it after the event and when they return to a fixed place; or simply wipe with a rag when passing water sources during the event, the cleaning efficiency is low, the effect is poor, and the cleaning process is dirty.
  • the main reason that affects the portable function of the high pressure washer is mainly because the pump in the high pressure washer occupies a large volume and the weight of the pump is heavy.
  • the structure of a common pump is shown in Chinese patent CN1212899C, which is driven by a piston and a swing wheel. The swinging wheel and piston require more working chambers, so the structure of this kind of pump is more complicated, and the weight and volume are relatively large.
  • AC-powered high-pressure cleaners are limited by the power supply, and their use scenarios must be equipped with corresponding AC power, which reduces the convenience of outdoor scene applications; AC-powered high-pressure cleaners are limited by the length of the power cord, and their cleaning range can only be Within the length of the power cord, the cleaning range and mobility of the high-pressure cleaner are limited.
  • one object of the present invention is to provide a small-sized and light-weight handheld pressure washer to improve portability.
  • a hand-held high-pressure washing machine includes a housing including a handle for holding, a main body portion disposed at an angle with the handle, and a liquid discharge portion for cleaning liquid to be sprayed outwards; a functional component, the function
  • the components include a motor provided in the housing, a pump driven by the motor, and a transmission mechanism; the pump is driven by the motor to convey cleaning liquid outwards, and the pump includes a pump body, and a pump body contained in the pump body.
  • the transmission mechanism is connected to the plunger, and the motor drives the plunger to reciprocate through the transmission mechanism; characterized in that there is only one number of the plungers, and the pump further includes a The upper pump cover and the lower pump cover that are detachably installed on the pump body, the central chamber includes an upper cavity formed in the upper pump cover, and a lower cavity formed in the lower pump cover,
  • the transmission mechanism drives the plunger Both ends of the upper plenum and the lower cavity to reciprocate.
  • the length of the functional component in the front-back direction is not greater than 200 mm, and the arrangement of distributing the upper pump cover on the upper end of the lower pump cover is such that the pump is disposed in the housing. in.
  • the outer shell has a mid-plane and a first half-shell and a second half-shell which are disposed substantially symmetrically with respect to the mid-plane, and the length extension direction of the plunger is in line with the mid-plane. Faces are parallel.
  • the transmission mechanism includes an eccentric mechanism connected to the motor, a central portion of the plunger is recessed inwardly to form a mounting portion, and the eccentric mechanism is connected to the mounting portion and connected to the mounting portion. Driven by a motor, the plunger is driven to reciprocate in the pump body.
  • an opening direction of the water outlet is substantially perpendicular to a reciprocating direction of the plunger, and the water outlet is located in front of the plunger.
  • the liquid outlet has an outlet for the cleaning liquid to flow outward.
  • the water outlet In the front-rear direction, the water outlet is located between the plunger and the outlet, and the outlet The opening direction of the nozzle is consistent with the opening direction of the outlet.
  • the water outlet and the water inlet are arranged on the same side of the plunger, and in the left-right direction, the axis of the water outlet is located on the mid-part plane or from The range of the size where the mid-part is offset to the left or right is not greater than 30% of the width of the pump body.
  • the pump further includes a water inlet cavity in communication with the water inlet, a water outlet cavity in communication with the water outlet, and a check valve unit, the check valve unit is used to control the cleaning liquid Unidirectionally flows from the water inlet cavity into the central cavity, or controls the unidirectional flow of cleaning liquid from the central cavity into the water outlet cavity, at least the water inlet cavity or at least the water outlet cavity is located at The front of the plunger.
  • the water inlet cavity and the water outlet cavity are both disposed in front of the plunger, and the water inlet cavity and the water outlet cavity are adjacently arranged in the left-right direction.
  • the extending direction of the water inlet cavity and the water outlet cavity is parallel to the reciprocating direction of the plunger, and the water outlet and the water inlet are both disposed in the water inlet cavity. It is in front of the water outlet cavity, and the opening direction of the water outlet and the water inlet is perpendicular to the extending direction of the water outlet and the water inlet.
  • the handheld high-pressure cleaner further includes a battery pack for powering the motor, the functional component is located at one end of the handle, and the battery pack is located at the other end of the handle.
  • the functional component is disposed in the main body portion, the main body portion extending substantially along the spraying direction of the cleaning liquid, and the center of gravity G of the hand-held high-pressure cleaner is located at the front end point of the handle
  • the handle is configured such that an included angle formed by the extending direction of the handle and the extending direction of the main body portion is greater than 90 degrees and less than or equal to 160 degrees.
  • the liquid discharge portion of the hand-held high pressure washer is provided with an attachment attachment portion, the attachment attachment portion is configured to allow detachable connection with a spray head, the spray head includes a certain length of spray
  • the rod and the nozzle connected to one end of the spray gun define the forward-pointing element of the handle as the spray gun assembly, and the backward and downward elements of the rear end of the handle as the power supply assembly, and the weight of the spray gun assembly is greater than The weight of the power component.
  • one object of the present invention is to provide a small-sized and light-weight handheld pressure washer to improve portability.
  • a hand-held high-pressure washer includes a casing, the casing having a mid-plane and a first half-shell and a second half-shell that are arranged approximately symmetrically with respect to the mid-plane, and the shell includes a grip for holding A handle, a main body portion disposed at an angle to the handle, and a liquid discharge portion for the cleaning liquid to be sprayed outwards; a functional component, the functional component including a motor provided in the housing, and a pump driven by the motor And a transmission mechanism; characterized in that the pump includes a pump body, a single plunger provided in the pump body, a water inlet and a water outlet provided on the pump body, and a central chamber, and the plunger moves to drive The cleaning liquid flows into the central chamber through the water inlet, and flows out from the water outlet to the liquid outlet; the transmission mechanism is connected to the plunger, and the plunger can be operatively driven in the Reciprocating in the length extension direction;
  • the housing includes a pump housing at least partially wrapped around the periphery of the pump, and the ratio of the width of the pump housing in the left-right direction to the width of the handle in the left-right direction is not greater than 3 A pump is disposed within the housing.
  • the pump includes an upper pump cover provided at one end of the plunger and a lower pump cover provided at the other end of the plunger, and the central chamber includes the upper pump cover formed An internal upper cavity and a lower cavity formed in the lower pump cover, the transmission mechanism drives the two ends of the plunger to reciprocate in the upper cavity and the lower cavity, respectively, in the left-right direction
  • the upper and lower pump covers both extend across the mid-plane.
  • the pump is disposed in the housing such that a length extension direction of the plunger is parallel to the mid-part plane.
  • the pump further includes a water inlet cavity in communication with the water inlet, a water outlet cavity in communication with the water outlet, and a check valve unit, the check valve unit is used to control the cleaning liquid One-way inflow from the water inlet chamber into the central chamber, or one-way control cleaning fluid from the central chamber into the water outlet chamber, the water inlet chamber and the water outlet chamber are arranged adjacently On the same side of the plunger.
  • the water inlet cavity and the water outlet cavity penetrate the pump body in the up-down direction, and the water inlet cavity and the water outlet cavity are both disposed in front of the plunger.
  • the liquid discharge portion has an outlet for the cleaning liquid to flow outward.
  • the water outlet In a forward-backward direction, the water outlet is located between the plunger and the opening, and the water outlet The opening direction of the nozzle is consistent with the opening direction of the outlet.
  • the water outlet and the water inlet are arranged side by side on the same side of the plunger, and in the left-right direction, the axis of the water outlet is located on the mid-part plane or The range of dimensions deviating from the mid-point to the left or right is not greater than 30% of the width of the pump body.
  • one object of the present invention is to provide a small-sized and light-weight handheld pressure washer to improve portability.
  • a handheld high-pressure cleaner includes:
  • the housing includes a handle for holding, a main body portion disposed at an angle with the handle, and a liquid discharge portion for the cleaning liquid to be sprayed outwards;
  • a motor provided in the housing to provide driving force for the operation of the hand-held high-pressure cleaner
  • a pump driven by the motor to convey cleaning liquid outwards the pump includes a pump body, a plunger housed in the pump body, a water inlet and a water outlet provided on the pump body, and communicating with the water inlet The water inlet cavity, the water outlet cavity and the central cavity that communicate with the water outlet, the plunger movement drives the cleaning liquid to flow into the central cavity through the water inlet, and from the water outlet to the outlet Liquid outflow
  • a transmission mechanism connected to the plunger, the plunger being driven by the motor through the transmission mechanism;
  • a one-way valve unit for controlling a unidirectional flow of the cleaning liquid from the water inlet chamber into the central chamber, or a unidirectional flow of the cleaning liquid from the central chamber into the water outlet chamber;
  • the one-way valve unit includes a first water outlet valve provided on the water outlet cavity.
  • the first water outlet valve includes a valve body, a one-way valve located in the valve body, and a bias voltage that biases the one-way valve.
  • the cleaning liquid can operatively squeeze the one-way valve and cause the one-way valve to move within the valve body.
  • the contact surface between the one-way valve and the valve body and the highest end of the water outlet The vertical distance between them is less than or equal to 20mm.
  • a vertical distance between a contact surface of the first water outlet valve and a contact surface of the valve body and a highest end of the water outlet is less than or equal to 5 mm.
  • the direction of the one-way valve of the first outlet valve is parallel to the plunger, and in the direction of the one-way valve, the highest end of the water outlet is located in the The contact surface of the one-way valve and the valve body or the highest end of the water outlet is located at substantially the same height as the contact surface of the one-way valve and the valve body.
  • the pump further includes a plunger hole that accommodates the plunger, the plunger hole extends in the up-down direction, defines a length that passes through half of the length of the plunger hole, and The plane perpendicular to the reciprocating direction of the plunger is the middle section R of the pump in the front-rear direction.
  • the bottom end of the water outlet is flush with the middle section R, or the The bottom end is located above the middle section R.
  • the outer shell has a mid-plane and a first half-shell and a second half-shell which are disposed substantially symmetrically with respect to the mid-plane, and the length extension direction of the plunger is in line with the mid-plane. Faces are parallel.
  • the pump includes an upper pump cover provided at one end of the plunger and a lower pump cover provided at the other end of the plunger, and the central chamber includes the upper pump cover formed An internal upper cavity and a lower cavity formed in the lower pump cover, the transmission mechanism drives the two ends of the plunger to reciprocate in the upper cavity and the lower cavity, respectively, in the left-right direction
  • the upper and lower pump covers both extend across the mid-plane.
  • the liquid discharge portion has an outlet for the cleaning liquid to flow outward.
  • the water outlet In a forward-backward direction, the water outlet is located between the plunger and the opening, and the water outlet The opening direction of the nozzle is consistent with the opening direction of the outlet.
  • the water inlet cavity and the water outlet cavity are both disposed in front of the plunger, and the water inlet cavity and the water outlet cavity are adjacently arranged in the left-right direction.
  • the extending direction of the water inlet cavity and the water outlet cavity is parallel to the reciprocating direction of the plunger, and the water outlet and the water inlet are both disposed in the water inlet cavity. It is in front of the water outlet cavity, and the opening direction of the water outlet and the water inlet is perpendicular to the extending direction of the water outlet and the water inlet.
  • the check valve unit further includes a second water outlet valve, and the first water outlet valve is disposed at The upper end of the water outlet cavity, and the second water outlet valve is disposed at the lower end of the water outlet cavity.
  • FIG. 1 is a schematic diagram of a high-pressure cleaner according to an embodiment of the present invention.
  • FIG. 2 is a specific structural diagram of the high-pressure cleaner shown in FIG. 1.
  • FIG. 3 is a schematic diagram of a high-pressure cleaner according to another embodiment of the present invention.
  • FIG. 4 is an overall schematic diagram of a pump, a transmission mechanism, and a motor in an embodiment of the present invention.
  • FIG. 5 is an exploded schematic view of the pump, the transmission mechanism, and the motor in FIG. 4.
  • FIG. 6 is a cross-sectional view of the pump in FIG. 4 along section line AA, with the plunger in a first state.
  • FIG. 7 is a cross-sectional view of the pump in FIG. 4 along section line AA, with the plunger in a second state.
  • FIG. 8 is a cross-sectional view of the pump in FIG. 4 along a section line BB.
  • FIG. 9 is a cross-sectional view of the pump in FIG. 4 along section line CC.
  • FIG. 10 is a schematic diagram of an embodiment of a transmission mechanism of the high-pressure cleaner.
  • FIG. 11 is a schematic diagram of another embodiment of a transmission mechanism of the high-pressure cleaner.
  • FIG. 12 is a schematic diagram of another embodiment of the transmission mechanism of the high-pressure cleaner.
  • FIG. 13 is a schematic diagram of a pump connected to a plunger through a crank link mechanism in an embodiment of the present invention, wherein the plunger is in a first state.
  • FIG. 14 is a schematic diagram of a pump connected to a plunger through a crank link mechanism in an embodiment of the present invention, wherein the plunger is in a second state.
  • FIG. 15 is a schematic diagram of a pump structure according to a second embodiment of the present invention.
  • FIG. 16 is a schematic view of the pump structure in FIG. 15 from another perspective.
  • FIG. 17 is another specific structural diagram of the high-pressure cleaner shown in FIG. 1.
  • FIG. 17 is another specific structural diagram of the high-pressure cleaner shown in FIG. 1.
  • FIG. 18 is a structural diagram of the high-pressure cleaner in FIG. 17 with a part of the casing removed and a battery pack connected thereto.
  • FIG. 19 is a cross-sectional view of the high-pressure washer shown in FIG. 17 in the vertical direction.
  • FIG. 20 is a plan view of the high-pressure washer shown in FIG. 17.
  • FIG. 21 is a schematic perspective view of an operator holding a high pressure washer with one hand.
  • FIG. 22 is a schematic perspective view of functional components of the high-pressure washer shown in FIG. 17.
  • FIG. 23 is a cross-sectional view of the functional components of the high-pressure washer shown in FIG. 22 along the section line EE, with the plunger in a first state.
  • FIG. 24 is a cross-sectional view of the functional components of the high-pressure washer shown in FIG. 22 along the section line EE, with the plunger in a second state.
  • FIG. 25 is a front view of a pump of the high-pressure washer shown in FIG. 17.
  • FIG. 26 is a partial exploded view of a pump of the high-pressure washer shown in FIG. 25.
  • FIG. 27 is a schematic perspective view of FIG. 26 from another perspective.
  • FIG. 28 is a cross-sectional view of the pump of the high-pressure washer shown in FIG. 25 along a section line FF.
  • FIG. 29 is a schematic perspective view of the pump body and a part of the speed reducing mechanism casing shown in FIG. 17.
  • FIG. 30 is a schematic view of the pump body and the part of the speed reduction mechanism housing shown in FIG. 29 at another angle.
  • FIG. 31 is a connection structural diagram of a plunger and an eccentric mechanism of a pump of the high-pressure washer shown in FIG. 17.
  • FIG. 32 is a schematic diagram of a planetary gear reduction mechanism of the high-pressure washer shown in FIG. 17.
  • FIG. 33 is a schematic view of the high-pressure cleaner shown in FIG. 17 connected with a spray head and a battery pack.
  • FIG. 1 is a schematic diagram of a high-pressure cleaner 1 according to an embodiment of the present invention.
  • 2 and 17 are specific structural diagrams of the high pressure washer 1 shown in FIG. 1.
  • the high-pressure washer 1 is a handheld type.
  • the handheld high-pressure washer 1 has a substantially pistol-shaped casing 10, a functional part 20 disposed in the casing 10, and is disposed on the casing 10 and used to control the handheld high-pressure cleaner 1 to be turned on.
  • a trigger 105 in a state or a closed state, a water inlet valve sealing system (not shown) having a water passage, and a liquid inlet 16.
  • the left side of FIG. 2 and FIG. 17 is forward (that is, the direction of water jet is forward), the right side is rear, and the upper part of the drawing is defined as the upper part, and the lower part of the drawing is defined as the lower part .
  • the drawing is defined as the left side outward, and the drawing is defined as the right side inward. That is, left and right as shown in FIG. 20.
  • the above definitions are for illustration only, and should not be construed as limiting the embodiments of the present disclosure.
  • the casing 10 includes a handle 106 for holding, a main body portion 107 disposed at an angle to the handle 106, and a liquid outlet portion 108 for spraying cleaning liquid outward.
  • the housing 10 has a left and right haver structure.
  • the casing 10 has a mid-plane T and a first half-shell 101 and a second half-shell 102 disposed substantially symmetrically with respect to the mid-plane T.
  • the mid-plane T can be understood as a plane extended by the joint where the first half-shell 101 and the second half-shell 102 meet.
  • the liquid outlet portion 108 is provided with an outlet 1081 at a free end portion thereof. That is, the outlet 1081 is disposed at an end remote from the handle 106.
  • the functional component 20 includes a motor 2 provided in the housing 10, a transmission mechanism 3 connected to the motor 2, and a pump 4 driven by the transmission mechanism 3.
  • the functional component 20 is stored in the main body portion 107.
  • the trigger member 105 is rotatably disposed on the handle 106 with a connection point between the trigger member 105 and the handle 106 as a fulcrum, and the trigger member 105 is partially contained in the main body portion 107.
  • the trigger 105 is specifically a trigger.
  • the handheld high-pressure cleaner 1 further includes a control component (not shown), wherein the pump 4 and the motor 2 are both connected to the control component.
  • the triggering element 105 can be used to input a cleaning signal to the control component and conduct the water path in the water inlet valve sealing system.
  • An external water source can pass through the water inlet valve sealing system under the action of the pump 4 and the motor 2.
  • the water channel is sprayed from the outlet 1081 to clean the surface of the object.
  • the liquid outlet portion 108 of the handheld high-pressure washer 1 is provided with an attachment attachment portion (not labeled), which is operatively connected to the spray head 11.
  • the spray head 11 includes a spray rod 111 of a certain length and a nozzle 112 connected to one end of the spray rod 111.
  • the handle 106 is disposed at an angle to the spray head 11.
  • the high pressure washer 1 itself does not have a water tank for storing a water source, but is connected to an external water source through a water pipe.
  • the external water source may be a pond, a faucet, or the like.
  • the water from the external water source is discharged from the spray head 11 after being pressurized by the pump.
  • This handheld high-pressure cleaner is small in size, light in weight, and easy to operate.
  • one end of the liquid inlet connector 16 may be assembled to or integrated with the housing 10, and the other end is suspended and provided with a water inlet port 104.
  • a water pipe connected to the outside is connected to guide the liquid into the inside of the hand-held high pressure washer 1.
  • the water inlet port 104 is disposed near the handle 106. Specifically, in the front-rear direction, the water inlet port 104 does not exceed the front end of the motor 2 forward, and the water inlet port 104 is located substantially below the motor 2.
  • the weight of the water pipe can also be close to the handle 106.
  • the center of gravity is still close to the handle 106, which effectively relieves the arm fatigue phenomenon that occurs during the one-handed operation of the operator and improves the operator's work experience.
  • the handheld high-pressure cleaner 1 can be powered by AC or DC. Because AC-powered handheld high-pressure cleaning opportunities are limited by the power supply, their use scenarios must be equipped with corresponding AC power, which reduces the convenience of outdoor scene applications. In addition, AC-powered handheld high-pressure cleaning machines are limited by the power cord. Length, its cleaning range can only be within the length of the power cord, which limits the cleaning range and mobility of the handheld high-pressure cleaner. Therefore, in this embodiment, it is preferable that the handheld high-pressure cleaner is powered by DC. Specifically, the DC power source is a rechargeable battery pack 9. The battery pack 9 is detachably mounted on the casing 10 to supply power to the motor 2. The number of the battery packs 9 may be one or two or more.
  • the number of the battery packs 9 is one.
  • the battery pack 9 is at least adapted to be connected to different types of DC tools, and can be universally used on DC blowers, lawnmowers, lawn mowers, chain saws, pruning shears, electric drills, electric hammers, electric circular saws and other electric tools.
  • the user can even purchase only the main body of the high pressure washer 1 and adapt the high pressure washer 1 by using the battery pack on other tools (such as a hair dryer, a lawnmower, etc.) to truly realize energy Sharing is conducive to the universal use of the battery pack platform.
  • the hand-held high pressure washer 1 does not include a water tank itself, but is connected to a water pipe 14 at a water inlet port 104, and then connected to an external water source by the water pipe 14.
  • the user only needs to connect the tail end of the water pipe to a faucet or put it into an external water source such as a swimming pool, pond, bucket, etc. Freely move within the range of the length for water spray cleaning.
  • users In outdoor activities, users only need to stop at any place where there is water, put the tail end of the water pipe into an external water source, and then perform water spray cleaning.
  • the pump can suck the water from the external water source into the high pressure washer and spray it out directly.
  • the handheld pressure washer 1 In order to realize that various types of articles can be carried around and can be cleaned, the handheld pressure washer 1 needs to achieve both weight reduction and high cleaning ability, which are contradictory to each other. In order to reduce the weight of the handheld high-pressure cleaner, it is necessary to reduce the weight of the battery pack 9 and the functional component 20 as much as possible. However, the weight reduction of the battery pack 9 will shorten the working time of the handheld high-pressure cleaner 1 and reduce the weight of the functional component 20. Quantification can weaken the cleaning efficiency of the hand-held high-pressure washer 1, thereby reducing the cleaning ability. At the same time, working time and cleaning efficiency are also mutually restricted. For the same battery pack 9, longer working time means weaker cleaning ability; conversely, stronger cleaning ability means shorter working time. Therefore, this embodiment needs to balance the weight, working time, and cleaning efficiency of the high-pressure cleaner.
  • the effective cleaning efficiency k of the handheld high-pressure washer 1 is equal to the working water pressure P times the working water flow rate Q.
  • the evaluation of the cleaning effect of a high-pressure cleaner is generally based on the effective cleaning efficiency. The greater the effective cleaning efficiency, the better the cleaning effect. However, under the same effective cleaning efficiency, the working water pressure and working water flow are inversely proportional. To improve the cleaning effect, those skilled in the art generally require that both be increased at the same time, but if both are increased at the same time, it is bound to To increase the power of the motor and increase the weight of the whole machine, the battery life of the battery pack 9 will also decrease, which is contrary to the concept of the portable handheld high-pressure cleaner positioned in the embodiment of the present disclosure.
  • the handheld pressure washer 1 There are many working scenarios applicable to the handheld pressure washer 1, including cleaning balcony, walkway, outdoor tables and chairs, cars, bicycles, garages, pets, garden tools, windows, swimming pools, outdoor stairs, etc. Different working scenarios have different requirements for the working water pressure and working water flow output by the handheld high-pressure cleaner 1.
  • the working water pressure refers to the ability to clean dirt. Under a constant working water flow rate, the greater the working water pressure, the greater the impact of the water flow on the target object per unit area, and the more the peeling rate of dirt from the target object surface. fast. Depending on the target object to be cleaned, the required working water pressure will also vary; the working water flow rate refers to the efficiency of cleaning dirt.
  • constant working water flow rate the greater the working water flow rate, the longer it takes to complete the cleaning of the target object The shorter. It should be noted that the above-mentioned constant working water flow rate and constant working water pressure can both be understood as the minimum value that can be matched with the corresponding working water pressure or working water flow to clean the target object.
  • the battery pack battery life refers to the time during which the battery pack can maintain the normal operation of the handheld high pressure washer 1.
  • the battery pack 9 battery life is not only related to the configuration of the battery pack itself, but also affected by the working mode of the handheld high-pressure cleaner 1.
  • the working water pressure used when the handheld high-pressure washer 1 works is high, and the working water flow is large, or one of the working water pressure and the working water flow is large, so compared to the working water pressure With a handheld high-pressure cleaner with a small working water flow, the battery pack's battery life will be shortened.
  • the hand-held high-pressure cleaner provided by the embodiments of the present disclosure has a working water pressure output from 0.4Mpa to 5Mpa and a working water flow rate from the external output to 1.5L / Min to 6L / Min.
  • the working water pressure output by the hand-held high pressure washer is 1.8 to 2.49 Mpa, and the flow of the working water output is 3 to 4.5 L / Min.
  • the external working water pressure of the handheld high-pressure cleaner can be 2Mpa, 2.2Mpa, 2.4Mpa, and the external working water flow can be 3L / Min, 3.5L / Min, 4L / Min.
  • the positioning of the high pressure washer 1 in the embodiment of the present disclosure is a portable high pressure washer. Then in the case where the definition of cleaning performance (working water pressure and working water flow) is completed. Operators care about whether the machine is small enough, light enough, and has enough battery life. This is also the key problem that the inventors need to study to overcome.
  • the entire weight of the handheld high-pressure washer 1 is less than or equal to 3 kg. In an alternative embodiment, the weight of the entire machine is less than 2.8 kg, 2.5 kg, 2 kg, or 1.8 kg, or 1.7 kg. , Or 1.5 kg. In one embodiment, the weight of the functional component 20 is 1000 g or less and the weight of the battery pack 9 is 800 g or less. In another optional embodiment, the weight of the functional part is 600 g or less and the weight of the battery pack 9 400 grams or less. In one embodiment, the weight of other components except the functional component 20 and the battery pack 9 is less than or equal to 500 grams, and more preferably, the weight of other components is less than 400 grams or 300 grams.
  • the battery pack 9 uses a lithium battery pack with a rated voltage between 18-42V and 1.5-3Ah to provide sufficient working energy and be lightweight.
  • the rated voltage of the battery pack may also be between 28V and 60V.
  • a single battery pack is a battery pack with a rated voltage of 20V and 2Ah. The time that the hand-held high pressure washer continuously sprays water out is 10 to 60 minutes.
  • the motor 2, the transmission mechanism 3, and the pump 4 will be described in detail below, and their specific structures take into account both weight reduction and cleaning capabilities.
  • the pump 4, the transmission mechanism 3, and the motor 2 of the functional components are arranged in sequence from front to back, and are located at one end of the handle 106; the battery pack 9 is located at the other end of the handle 106, so that the center of gravity of the functional components is located at the front of the handle In front of the point, the center of gravity of the battery pack is located behind the front end of the handle.
  • at least one of the functional components located at both ends of the handle 106 and the battery pack 9 protrudes into the handle 106.
  • the pump 4, the transmission mechanism 3, and the motor 2 in the functional component 20 are all or partly arranged in parallel with the handle 106.
  • the pump 4 is located at one end of the handle 106, the transmission mechanism 3 and the motor 2 and the handle 106 Set in parallel.
  • the functional components 20 and the battery pack 9 are the two main weights of the handheld high-pressure washer 1, respectively.
  • the center of gravity G of the handheld high-pressure washer 1 ( The center of gravity of the handheld pressure washer described here and below refers to the center of gravity of the entire machine with a battery pack attached but not connected to the spray head) located near the handle 106, so that the user's weight will basically fall on the user's hand when holding it More labor-saving.
  • the center of gravity G of the handheld high-pressure washer 1 falls within 8 cm from the rear end point B of the handle 106 to the front end A of the handle 106.
  • the center of gravity G falls within 5 cm, 3 cm, 2 cm, and 1 cm forward from the rear end of the handle 106 to the front end A of the handle 106. In another optional embodiment, the center of gravity G falls within 5 cm, 3 cm, 2 cm, and 1 cm of the rear end B of the handle 106 to a point A of the front end of the handle 106. In another optional embodiment, the center of gravity G falls between the rear end point B of the handle 106 and the front end point A of the handle.
  • the water inlet port 104 is located near the center of gravity G of the handheld pressure washer 1, specifically, within 5 cm or 3 cm before and after the center of gravity G, so that the weight of the water pipe 14 connected thereto also falls on the center of gravity G nearby.
  • the water inlet port 104 is also located near the handle 106. Specifically, the front end of the handle 106 is 3 cm and 5 cm forward to the rear end and 3 cm and 5 cm backward, so that the water pipe 14 and other objects can be reduced when the user moves. Probability of entanglement or stumbling.
  • the handle 106 is behind the main body portion 107, and the shower head 11 is located in front of the main body portion 107.
  • the part of the front end A of the handle 106 is defined as the spray gun assembly 103 (that is, the spray gun assembly includes at least functional parts, liquid outlets, and spray heads. )
  • the rearward and downward part of the rear end B of the handle 106 is defined as the power source assembly 90 (that is, the power source assembly includes at least a battery pack mounting portion and a battery pack connected to the handle).
  • the holding support point of the user holding the handle is defined as C.
  • the holding support point C can be understood as the position where the user's index finger abuts the trigger when the user holds the handle.
  • This grip support point C is also the deflection point of the machine.
  • the distance from the center of gravity G1 of the spray gun assembly 103 to the holding support point C of the handle 106 is L1.
  • the distance from the center of gravity G2 of the power supply assembly 90 to the grip support point C of the handle 106 is L2.
  • the weight M1 of the spray gun assembly 103 is greater than the weight M2 of the power supply assembly 90.
  • the force to overcome the deflection F is applied by the wrist.
  • the greater the moment of inertia ie, the product of M1 and L1
  • the application of force at the wrist easily causes operator fatigue and makes the operator's wrist sore. Should not work too long.
  • the handle 106 is arranged obliquely, and the handle 106 is arranged in an extending direction X1 of the handle 106 and an extending direction X2 of the main body portion 107 (the main body portion is substantially along the spraying direction of the cleaning liquid)
  • the angle formed by extension is greater than 90 degrees and less than 180 degrees.
  • the handle 106 is configured such that the included angle between the extension direction X1 of the handle 106 and the extension direction X2 of the main body portion 107 (the main body portion 107 extends substantially along the spraying direction of the cleaning liquid) is greater than 100 degrees and less than 160 degrees .
  • the included angle between the handle and the main body extending direction is 130 degrees.
  • the included angle may be 110 degrees, 120 degrees, 125 degrees, 135 degrees, 140 degrees, 145 degrees, and 150 degrees.
  • the entire length of the handheld high-pressure washer 1 is less than 500 mm, and preferably, the entire length of the whole machine is 400 mm or 350 mm.
  • the overall length of the hand-held pressure washer 1 will vary. For example, when a long gun nozzle is used, the overall length of the high-pressure washer can reach 1000 mm.
  • the length of the body of the hand-held high-pressure washer 1 is less than 300 or 250 millimeters when no nozzle is added to the hand-held high-pressure washer 1.
  • the overall height of the handheld high-pressure washer 1 is less than 250 mm or 200 mm, and the width of the whole machine (excluding the battery pack) is less than 150 or 100 mm.
  • FIG. 3 illustrates another type of high pressure washer that is different from the form of a portable high pressure washer.
  • the high pressure washer has a host 12 and a spray gun 13 separately provided.
  • the spray gun 13 is used for hand-held operation.
  • the spray gun 13 is provided with a spray head 11.
  • the spray gun 13 and the host 12 are connected through a water pipe 14.
  • the main machine 12 is provided with a motor 2, a transmission mechanism 3, and a pump 4.
  • the main body 12 further includes a water tank 15 capable of storing a certain amount of water. This allows the high-pressure washer 1 to work away from water sources.
  • the water in the water tank 15 is transmitted from the water pipe 14 to the spray gun 13 after being pressurized by the pump 4, and the user operates the spray gun 13 to point at the object to be cleaned.
  • the above-mentioned different forms of the high-pressure cleaner 1 each include a pump 4, a motor 2, and a transmission mechanism 3 connecting the motor 2 and the pump 4.
  • the motor 2 is a common AC motor or a DC motor.
  • the motor 2 has a motor shaft 21 that rotates about its axis.
  • the motor shaft 21 outputs rotational power to the outside.
  • the transmission mechanism 3 usually has a transmission housing 30 wrapped around the outside.
  • the transmission housing 30 has two openings, one opening connects the transmission mechanism 3 with the motor 2, and the other opening connects the transmission mechanism 3 with the pump 4.
  • the pump 4 is driven by the motor 2 through the transmission mechanism 3, which increases the water pressure of the water entering the pump 4 and improves the cleaning effect of the effluent.
  • the positioning of the high pressure washer is a portable high pressure washer 1 for portability. It is easy to understand that the hand-held high-pressure cleaner needs to meet the requirements that the operator can use it in various scenarios and in various places. Due to the multiple plungers, the volume and weight of the pump are relatively large, and in order to drive the multi-plunger pump, a large amount of power is required, and a lot of energy is bound to be consumed.
  • the high-pressure cleaner of this embodiment uses a rechargeable battery pack as a power source, so it is necessary to reduce energy consumption as much as possible in order to extend the continuous working time.
  • FIG. 4, FIG. 5, FIG. 19, FIG. 23, and FIG. 24 A single plunger 5 is provided inside the pump 4, that is, the pump 4 is a single plunger pump. According to the above analysis, the problems of weight and volume of the multi-plunger pump have been solved. In addition, the driving energy required for a single plunger pump 4 is about 1/3 of that of the three plungers and 1/2 of that of the two plungers, which effectively prolongs the working time of the single battery pack 9.
  • one end of the plunger is driven, and the other end is connected to the high-pressure chamber, so that the plunger reciprocates in the high-pressure chamber to pressurize the water.
  • it is a two-plunger pump, it usually reciprocates with a 180-degree phase difference between the two plungers. If it has three plungers, it reciprocates with a 120-degree phase difference through the plunger, so the cleaning liquid is continuously discharged without pulse. .
  • an embodiment of the present disclosure further provides a single plunger pump capable of continuously pumping water.
  • the size of the pump 4 in the water jetting direction is defined as the height h of the pump 4, which will be perpendicular to the water jetting direction and be related to the motor rotation axis.
  • the size of the pump 4 in the vertical direction defines the width w of the pump 4, and the size of the pump 4 extending in the direction of the plunger 5 is defined as the length l of the pump 4.
  • the pump 4 includes a pump body 46, a water inlet 431, a water outlet 441, and a connection port 49 connected to the transmission mechanism 3, and is housed in the pump body 46.
  • the plunger 5 is used to pressurize the water, and the plunger 5 is a cylinder extending in the length direction.
  • the plunger 5 is made of a metal material, and the two ends of the plunger 5 are hollow, and are filled with a lighter body 58 having a smaller density, so that the mass of the plunger 5 can be reduced, and the process of the plunger 5 in reciprocating motion can be reduced.
  • the vibration problem of the whole machine also reduces the power of the propulsion plunger and reduces energy consumption.
  • the lightweight body is plastic. In other embodiments, a resin or a lightweight metal such as aluminum can also be used.
  • the length extension direction of the plunger 5 is perpendicular to the opening direction of the water inlet 431 and the opening direction of the water outlet 441, respectively.
  • the plunger 5 can be driven to reciprocate in its length direction.
  • the water inlet 431 is used to connect with an external water source or a water pipe or a water gun. Water enters the inside of the pump 4 through the water inlet 431.
  • the number of the water inlets 431 is one.
  • the water outlet 441 is usually connected to the spray head 11 of the high-pressure washer 1, so that the spray head 11 can spray the pressurized water.
  • the water inlet 431 and the water outlet 441 are usually separately provided.
  • the number of the water outlets 441 is one.
  • the pump 4 further includes an upper pump cover 462 and a lower pump cover 463 which are detachably mounted on the pump body 46.
  • the upper pump cover 462 and the lower pump cover 463 are symmetrically installed on both sides of the pump body 46.
  • the upper and lower pump covers are fixedly connected to the pump body 46 by common fixing methods such as bolts.
  • the pump 4 may also be integrally formed or formed by splicing multiple parts easily conceivable by those skilled in the art.
  • the pump 4 further includes a central chamber 41.
  • the inside of the central chamber 41 is hollow.
  • the plunger 5 is preferably housed in the central chamber 41.
  • the central chamber 41 extends in the length direction of the plunger 5.
  • the size of the central cavity 41 along the length direction of the plunger 5 is larger than the length of the plunger 5, so that the plunger 5 always has a cavity 42 in the central cavity 41 when it reciprocates in this direction.
  • the cavity 42 is located at the upper end of the central chamber 41. As shown in FIGS.
  • the cavity 42 is located at the lower end of the central chamber 41. That is, the central chamber 41 includes an upper cavity 421 formed in the upper pump cover 462 and a lower cavity 422 formed in the lower pump cover 463.
  • the transmission mechanism 3 drives the two ends of the plunger 5 to reciprocate in the upper cavity 421 and the lower cavity 422, respectively.
  • the upper and lower pump covers 462, 463 are mounted on the pump body 46, a complete central chamber 41 is formed.
  • the pump 4 further has a water inlet cavity 43, a water outlet cavity 44 and a plunger hole 40 separated from the central chamber 41. At least a part of the plunger 5 is received in the plunger hole 40. Most of the water inlet cavity 43, the water outlet cavity 44 and the central cavity 41 are located in the pump body 46. The water inlet cavity 43 and the water outlet cavity 44 are arranged parallel to each other and penetrate the pump body 46 in the vertical direction. The external water originates from the water inlet 431 and enters the water inlet cavity 43. After being pressurized by the cavity 42, a high-pressure water flow is formed and finally discharged from the water outlet cavity 44.
  • the water inlet cavity 43, the water outlet cavity 44 and the central cavity 41 communicate with each other to form a through communication channel.
  • the water inlet cavity 43 includes a first water inlet cavity 432 and a second water inlet cavity 433 disposed symmetrically.
  • the water entering from the water inlet 431 may selectively enter the first water inlet cavity 432 or the second water inlet cavity 433.
  • the central chamber 41 is connected to the first water inlet cavity 432 and the second water inlet cavity 433, respectively.
  • the first water inlet cavity 432 is connected to one end of the central cavity 41
  • the second water inlet cavity 433 is connected to the opposite other end of the central cavity 41.
  • connection channels 45 for connecting the central chamber 41 to the two water inlet chambers, as shown in FIG. 9.
  • a connection channel 45 for communicating with the first water inlet cavity 432 is provided at one end of the central chamber 41
  • a connection channel 45 for communicating with the second water inlet cavity 433 is provided at the other end of the central chamber 41.
  • the extending direction of the connecting channel 45 and the reciprocating direction of the plunger 5 are perpendicular to each other.
  • the water outlet cavity 44 also includes a first water outlet cavity 442 and a second water outlet cavity 443 disposed symmetrically.
  • the first water outlet cavity 442 and the second water outlet cavity 443 are also connected to the central chamber 41 respectively, and both are connected to the water outlet 441.
  • the first water outlet cavity 442 and the second water outlet cavity 443 are respectively connected to opposite ends of the central chamber 41. Further, the first water outlet cavity 442 and the second water outlet cavity 443 are also connected to the central chamber 41 through the connection passage 45.
  • the connecting channel 45 at one end of the central chamber 41 connects the first inlet chamber 432, the first outlet chamber 442, and the central chamber 41, and the connecting channel 45 at the other end of the central chamber 41 connects the second The water inlet cavity 433, the second water outlet cavity 443 and the central cavity 41 are connected and penetrated.
  • the inlet cavity 43 and outlet cavity 44 and the plunger hole 40 almost determine the volume of the pump body 46, in order to make the pump 4 more compact, the arrangement of the inlet cavity 43, outlet 44 and plunger hole 40 and The size of the openings requires special consideration for design.
  • the water inlet cavity 43 and the water outlet cavity 44 are both disposed on the same side of the plunger 5. Specifically, the water inlet cavity 43 and the water outlet cavity 44 are both disposed in front of the plunger 5, and the water inlet cavity 43 and the water outlet cavity 44 are disposed adjacent to each other in the left-right direction (that is, in the width direction of the pump 4).
  • the plunger hole 40 extends in the up-down direction, and the extending direction of the plunger hole 40 is consistent with the extending direction of the water inlet cavity 43 and the water outlet cavity 44.
  • a surface passing through half of the length of the plunger hole 40 and perpendicular to the reciprocating direction of the plunger 5 is defined as the middle section R of the pump 4 in the front-rear direction.
  • the plunger hole 40 has a plunger hole projection 401 on the middle section R
  • the water inlet cavity 43 has a water inlet cavity projection 430 on the middle section R
  • the water outlet cavity 44 has a water outlet cavity projection on the middle section R 440.
  • the plunger hole projection 401, the water inlet cavity projection 430, and the water outlet cavity projection 440 are all regular geometric figures. Specifically, all three projections are circular.
  • the center of the three projections (the center of the circle) is connected end to end to form an isosceles triangle.
  • the center U of the projection of the plunger hole is the vertex, and the apex angle is 35 degrees to 60 degrees. Preferably, the apex angle is 40 degrees.
  • the arrangement of the plunger holes 40, the water inlet cavity 43, and the water outlet cavity 44 in the left-right direction is more compact, and the maximum width of the pump 4 in the left-right direction is suppressed.
  • the three projections may also be square or rectangular or irregular figures. More specifically, the lateral width of the water inlet cavity 43 and the water outlet cavity 44 in the arrangement direction is 18 mm-60 mm. Preferably, the lateral width range is 28 mm.
  • the embodiment of the present disclosure mainly provides two feasible implementation manners, which are described in detail below.
  • the opening direction of the water inlet 431 and the opening direction of the water outlet 441 are perpendicular to each other.
  • the opening direction of the water outlet 441 coincides with the opening direction of the outlet 1081 of the liquid outlet portion 108.
  • the water inlet 431 is located on the left or right side of the plunger 5, and the water outlet 441 is located on the front side of the plunger 5.
  • the water inlet 431 is provided in the middle of the pump body 46, and the water outlet 441 is also provided in the middle of the pump body 46.
  • the water inlet 431 and the water outlet 441 are both disposed on the side of the pump 4 near the outlet 1081.
  • the water inlet 431 is disposed below the water outlet 441.
  • the water inlet and outlet ports 431 and 441 are stacked and arranged in the extending direction of the plunger 5.
  • the inlet and outlet ports 431 and 441 are arranged in a stack in the middle area of the width of the pump 4. This arrangement does not increase the width of the pump 4 additionally.
  • the water inlet 431 is located directly below the water outlet 441, the connection between the liquid inlet pipe 435 and the water inlet 431 can be realized without an additional transfer curve, and the structure is compact and the volume of the entire machine is reduced.
  • the water inlet 431 and the water outlet 441 are both disposed between the water inlet and outlet chambers 43, 44 and the outlet 1081. Further, the opening direction of the water inlet 431, the opening direction of the water outlet 441, and the opening direction of the outlet 1081 are all the same.
  • the movement of the plunger 5 causes the external water to flow from the water inlet port 104 to the pump 4 and is pressurized by the pump 4 from the water outlet 441 to the liquid outlet 108 discharge.
  • the opening direction of the water outlet 441 is the same as the opening direction of the outlet 1081 of the liquid outlet portion 108. With this design, the external water flows directly from the water outlet 441 without additional cornering, thereby reducing the pressure loss of the water jetted from the liquid outlet 108.
  • the axis I of the water outlet 441 is located on the mid-plane T of the housing 10 of the hand-held high-pressure washer 1 or deviates from the mid-plane T to the left or right by a size range not greater than 30% of the width of the pump body 46.
  • the axis I of the water outlet 441 is on the mid-plane T, at this time, as shown in FIGS. 28 and 29, in the front-rear direction, at least a part of the water inlet 431 communicates with the water inlet cavity 43, and at least the water outlet 441 Part of the area is in communication with the water outlet cavity 44.
  • This arrangement makes the entire pump body 46 compact in structure and minimizes the width of the pump 4.
  • the axis I of the water outlet 441 may also be offset from the mid-plane T to the left or right by a predetermined distance.
  • the axis of the water outlet should be understood as: if the water outlet 441 is a regular shape, the geometric center of the water outlet 441; if the water outlet 441 is an irregular shape, the physical center of the water outlet 441.
  • the inlet and outlet ports 431 and 441, the inlet and outlet chambers 43, 44 and the plunger 5 are arranged in order from front to back.
  • the water in the high pressure chamber is formed by the plunger 5 being squeezed.
  • the high-pressure water flow can directly flow into the water inlet cavity 43 on the front side, and then flow into the water outlet 441 on the front side. The water flow moves in the forward direction, and the water pressure loss is suppressed.
  • the pump 4 further includes a check valve unit 6 for controlling the on-off of the water in the passage.
  • the check valve unit 6 includes a first group of check valve units 61 and a second group of check valve units 62 that are symmetrically disposed.
  • the first group of check valve units 61 will be described below as an example.
  • the first group of check valve units 61 includes a first water inlet valve 611 provided between the first water inlet cavity 432 and the central cavity 41, and a first water inlet valve 611 provided between the central cavity 41 and the first water outlet cavity.
  • First outlet valve 612 between 442.
  • the first water inlet valve 611 is used to control the flow of water between the first water inlet cavity 432 and the central cavity 41
  • the first water outlet valve 612 is used to control the flow of water between the first water outlet cavity 442 and the central cavity 41 Off.
  • the first water inlet valve 611 When the first water inlet valve 611 is opened, the water of the first water inlet cavity 432 may flow into the central cavity 41. And because of the one-way conduction effect of the first water inlet valve 611, the first water inlet valve 611 can control the water flow to move from the first water inlet cavity 432 to the direction of the central cavity 41.
  • the first water inlet valve 611 When the first water inlet valve 611 is closed, the water in the first water inlet cavity 432 cannot move into the central chamber 41, and at this time, the first water inlet cavity 432 and the central cavity 41 form a partition. Similarly, when the first water outlet valve 612 is opened, the water in the central chamber 41 can flow to the first water outlet cavity 442 and has a one-way communication function. When the first water outlet valve 612 is closed, water in the central chamber 41 cannot flow to the first water outlet chamber 442, and water is accumulated in the central chamber 41.
  • the plunger 5 in the central chamber 41 is used to control the opening and closing of the first group of check valve units 61.
  • the plunger 5 can simultaneously control the first water inlet valve 611 to open, and at this time control the first water outlet valve 612 to close.
  • the plunger 5 can also control the first water inlet valve 611 to be closed at the same time, and control the first water outlet valve 612 to be opened at this time. That is, the plunger 5 can simultaneously control the first water inlet valve 611 and the first water outlet valve 612 to be in different states of being opened or closed, respectively. As shown in FIGS.
  • the plunger 5 moves to the lowermost end of the central chamber 41 as the first state, and in this state, the plunger 5 starts to move from the lowermost end to the upper end.
  • the first water inlet valve 611 is opened, and at this time, the first water outlet valve 612 is closed. Therefore, water enters the central chamber 41 from the first water inlet chamber 432 and does not flow out of the central chamber 41. Water is accumulated in the central chamber 41. Then, the plunger 5 continues to move upward from the lowermost end of the central chamber 41 and moves to the uppermost end of the central chamber 41 (as shown in FIGS. 7 and 24), defining the plunger 5 at this time as the second state.
  • the plunger 5 starts to move from the uppermost end to the lower end.
  • the first water inlet valve 611 is closed and the first water outlet valve 612 is opened.
  • Water cannot be replenished from the inlet chamber 43 into the central chamber 41.
  • the water originally located in the central chamber 41 is squeezed by the plunger 5 to generate high pressure, and flows to the first outlet chamber 442 from the outlet 441 to the nozzle 11 Out.
  • the plunger 5 can also control the opening and closing of the second group of check valve units 62.
  • the second group of check valve units 62 includes a second water inlet valve 621 and a second water outlet valve 622.
  • the second water inlet valve 621 is disposed between the second water inlet cavity 433 and the central cavity 41
  • the second water outlet valve 622 is disposed between the central cavity 41 and the second water outlet cavity 443.
  • the second water inlet valve 621 When the plunger 5 is in the second state, the second water inlet valve 621 is opened and the second water outlet valve 622 is closed, so water enters the central chamber 41 from the second water inlet chamber 433. Therefore, the second group of check valve units 62 and the first group of check valve units 61 can play a complementary role and improve the pumping efficiency of the pump.
  • the water entering from the water inlet 431 enters the central chamber 41 through the first water inlet cavity 432 and is discharged from the second water as the plunger 5 is squeezed.
  • the cavity 443 discharges the water outlet 441.
  • the water entering from the water inlet 431 enters the central chamber 41 through the second water inlet chamber 433, and moves from the first state as the plunger 5 is squeezed.
  • the water outlet cavity 442 is discharged from the water outlet 441 and is sprayed through the spray head 11.
  • the first water inlet valve 611 includes a valve body 610, a one-way valve 613 located in the valve body 610, and a biasing member 614 that biases the one-way valve 613.
  • the biasing member 614 When the plunger 5 is in the second state, the biasing member 614 generates a biasing force so that the one-way valve 613 closes the first water inlet cavity 432.
  • the volume of the cavity close to the one-way valve 613 gradually increases, thereby generating an increasing pressure to overcome the biasing member 614, and finally the one-way valve 613 opens. That is, the first water inlet valve 611 changes from a closed state to an open state.
  • the first water outlet valve 612 also includes a valve body 617, a one-way valve 615 located in the valve body 617, and a biasing member 616 that biases the one-way valve 615.
  • the direction of the one-way valve 615 of the first water outlet valve 612 and the biasing direction of the biasing member 616 are opposite to the direction of the one-way valve 613 of the first water inlet valve 611 and the biasing direction of the biasing member 616. Therefore, as the plunger 5 moves from the second state to the first state, the pressure to overcome the biasing member 616 can be reduced, and finally the one-way valve 615 closes the first water outlet cavity 442 under the action of the biasing force. That is, the first water outlet valve 612 changes from an open state to a closed state.
  • the second The water inlet valve 621 is correspondingly changed from an open state to a closed state
  • the second water outlet valve 622 is correspondingly changed from a closed state to an open state.
  • the assembly relationship between the pump and the casing ensures that the handheld high-pressure washer 1 is compact and portable; on the other hand, it also solves the problems that the high-pressure washer 1 has a long self-priming time and a large water pressure loss.
  • the solution of this problem is a key step for whether the handheld high-pressure cleaner 1 can be promoted on a large scale in industry.
  • the relationship between the assembly position of the pump 4 and the self-priming will be described in detail as follows.
  • the hand-held high-pressure cleaner 1 provided in the embodiment of the present disclosure is connected to an external water source through a water pipe 14.
  • the inner cavity of the single-plunger pump 4 has air in itself, and On the one hand, there is also a certain amount of air in the inner cavity of the connected water pipe 14.
  • the motor 2 drives the plunger 5 to reciprocate, so that the external water source pushes the air in the water pipe 14 into the central chamber 41 of the pump 4 together with the pump 4 below.
  • the water inlet and drainage of the upper pump cover 462 is described as an example.
  • the first case the one-way valve 615 of the first water outlet valve 612 is not fully closed (that is, the gas is collected when the water is discharged). Around the one-way valve 615, the one-way valve 615 is skewed. At this time, even if the plunger 5 continues to move downward from the uppermost end of the central chamber 41 and moves to the lowermost end of the central chamber 41, the upper cavity leaks.
  • the plunger 5 cannot simultaneously control the first water inlet valve 611 and the first water outlet valve 612 to be in different states of being opened or closed, and the handheld high-pressure cleaner cannot perform normal cleaning operations.
  • the inventors designed the arrangement of the single-plunger pump 4 and the casing 10 and the structure of the single-plunger pump 4 by using the phenomenon of gas floating in water to solve the above-mentioned problems. Specifically, when water and gas are mixed, the gas will float up. Therefore, in the embodiment of the present disclosure, the single-plunger pump 4 is vertically arranged in the casing 10, and the water outlet 441 is disposed near the one-way valve 613 of the first water outlet valve 612. With this design, the external water flows from the water inlet 431 into the water inlet cavity, and most of the gas will float up and flow above the water inlet cavity 43.
  • the plunger 5 Even if the plunger 5 is in the first state (the upper cavity 421 is evacuated), water and gas enter the upper cavity 421 together, and most of the gas is at the top of the upper cavity 421. At this time, the plunger 5 moves to the second state. (Squeeze the upper cavity 421), the first water outlet valve 612 is in an open state, and most of the gas will be squeezed and flowed out from the first water outlet valve 612. Further, since the water outlet 441 is provided adjacent to the one-way valve 615 of the first water outlet valve 612, the path of the gas flow is short, and it is quickly discharged outward from the water outlet 441.
  • the vertical distance L3 between the contact surface of the one-way valve 615 and the valve body 617 of the first water outlet valve 612 and the highest end of the water outlet 441 is less than or equal to 20 mm.
  • the vertical distance may be 18mm, 16mm, 14mm, 12mm, 10mm, 9mm, 8mm, 7mm, 6mm, 5mm, 4mm, 3mm, 2mm, 1mm.
  • the vertical distance L3 is less than or equal to 5 mm, so that the exhaust is faster and more thorough. It can be understood that the vertical distance here is less than or equal to 20mm should be an absolute distance.
  • the highest end of the water outlet 441 is located above or below the contact surface 615 of the one-way valve 615 and the valve body 617 of the first water outlet valve 612.
  • the highest end of the water outlet 441 may be designed to be located below the contact surface.
  • the distance between the highest end of the water outlet 441 and the contact surface is 3 mm.
  • the highest end of the water outlet 441 may also be designed to be located at substantially the same height as the contact surface.
  • the bottom end of the water outlet 441 is designed to be flush with the middle section R of the pump body 46 in the up-down direction or the bottom end of the water outlet 441 is located above the middle section R. In this case, the upper position of the water outlet 441 is more convenient to discharge the gas in the central chamber 41.
  • the first water outlet valve 612 is arranged vertically.
  • the cleaning liquid operatively squeezes the one-way valve 615 and causes the one-way valve 615 to move within the valve body.
  • the moving direction of the one-way valve 615 is parallel to the plunger 5.
  • the moving direction of the one-way valve of the second water outlet valve 622 is also parallel to the plunger 5. That is, the second water outlet valve 622 is also arranged vertically.
  • the first water inlet valve 611 is vertically arranged.
  • the cleaning liquid can operatively squeeze the one-way valve 613 and cause the one-way valve to move within the valve body 610, and the direction of the one-way valve 613 is parallel to the plunger 5.
  • the moving direction of the one-way valve of the second water inlet valve 621 is also parallel to the plunger 5. That is, the second water inlet valve 621 is also arranged vertically.
  • the stroke and diameter of the plunger 5 and the number of reciprocations of the reciprocating motion determine the flow rate of the pump.
  • the diameter of the plunger is defined as D (unit mm)
  • the stroke of the plunger is defined as S (unit mm)
  • the reciprocating frequency of the plunger movement is n (rpm).
  • the volume of the pump 4 directly affects the portability of the handheld high-pressure washer 1.
  • the area of the plunger 5 is increased, and the required thrust force is increased accordingly.
  • the electric motor needs more power (larger-volume motor), and The pump body must be strengthened. In this way, the width of the hand-held high-pressure washer 1 becomes large, and the cost is disadvantageously increased.
  • the rotation speed of the motor is set to be adjustable, that is, the frequency n of the reciprocating motion of the pump is changed within a certain range.
  • the frequency n of the reciprocating motion increases, the amount of push decreases, and the diameter of the plunger needs to be reduced. If the plunger length is not increased, the size of the plunger is correspondingly reduced, and the flow rate B of the pump is reduced.
  • the frequency n of the reciprocating motion decreases, the amount of push increases, and the size of the plunger 5 unfavorably increases.
  • the discharge flow rate does not increase with the increase of the reciprocating frequency n, but increases with the increase of the frequency when the frequency is lower than a certain frequency. Not only does the discharge flow rate not increase significantly, but it decreases as the reciprocating frequency n increases. This is because the pump needs a certain suction time during a reciprocating cycle, that is, the pump has a certain self-priming time, and the self-priming time must be reserved for the reciprocating cycle.
  • the pump can effectively use the cavity when it sucks water. Volume, if the period is too short, the suction time is not enough, and the cavity of the pump starts to drain before it is full of water, resulting in a decrease in flow.
  • the inventors obtained the size parameters of the pump through experiments, which can minimize the volume and cost while enabling the discharge flow rate and pressure of the pump to meet the cleaning needs of households.
  • the ratio of the pump's flow to the pump's volume is defined as the pump's flow-to-volume ratio. This parameter reflects the relationship between the pump's water capacity and the pump's volume. Those skilled in the art hope that the larger the pump's flow, the better, so that it is clean.
  • the stroke range of the plunger 5 is 3-16mm, and the diameter range of the plunger is 6-16mm.
  • the optional range of the plunger length is 45- 100mm, so the value range of the pump volume is 63000mm ⁇ 3-85000mm ⁇ 3, and the range of flow volume ratio is between 1.4-1.9.
  • the length of the plunger 5 is 58 mm, the stroke of the plunger 5 is 5.4 mm, and the diameter of the plunger 5 is 12 mm.
  • the maximum flow volume ratio is 1.9.
  • the length of the plunger 5 can also be selected from 54mm, 60mm, 62mm, 68mm, 90mm, the stroke of the plunger 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, the diameter of the plunger 8mm, 10mm, 14mm, 16mm.
  • the handheld high-pressure cleaner 1 in order to make the handheld high-pressure cleaner 1 more compact and portable, special consideration must be given to the arrangement of the functional components 20 in the housing. Whether the handheld pressure washer 1 is small or not is mainly determined by length, width and height.
  • the width of the handheld high-pressure washer 1 is mainly determined by the configuration and arrangement of the functional components 20.
  • the length l of the pump 4 is greater than the width w of the pump 4. Specifically, the length l of the pump 4 is about 80 mm and the width w of the pump 4 is about 50 mm.
  • the housing 10 includes a pump housing 17 that is at least partially wrapped around the periphery of the pump 4. In order to suppress the maximum width of the handheld high-pressure washer 1, the pump 4 is set in the casing 10 in such a manner that the ratio of the width w1 of the pump housing 17 in the left-right direction to the width w2 of the handle 106 in the left-right direction is not greater than 3. .
  • the ratio of the width w1 of the pump housing 10 in the left-right direction to the width w2 of the handle 106 in the left-right direction is approximately 1.3 to 1.8.
  • the embodiment of the present disclosure also arranges the single-plunger pump 4 in the housing 10 vertically.
  • the pumps 4 are arranged in the casing 10 in such a manner that the length extension direction of the plunger 5 is parallel to the mid-plane T.
  • the upper pump cover 462 and the lower pump cover 463 both extend over The mid-plane T of the casing 10.
  • the motor 2 is configured as a high-speed small motor.
  • the no-load rotation speed of the motor 2 is greater than or equal to 10,000 rpm
  • the motor shaft of the motor 2 extends in the front-rear direction
  • the pump 4 is disposed in front of the motor 2.
  • the transmission mechanism 3 includes a reduction mechanism that is transmission-connected to the high-speed motor 2.
  • the reasonable cooperation of the reduction mechanism and the high-speed motor can significantly reduce the Reduce the overall weight and volume of the motor and transmission.
  • the no-load output speed of the reduction mechanism is less than or equal to 3000 rpm or 2500 rpm or 2200 rpm or 2000 rpm.
  • the reduction ratio of the reduction mechanism is between 12: 1 and 3: 1, such as about 10: 1, 8: 1, 7: 1, 6: 1, 5: 1, 4: 1, and so on.
  • the width of the motor 2 in this embodiment is effectively reduced, and the volume and weight of the motor 2 can be reduced to less than half, which improves the performance of the handheld high-pressure cleaner 1. Portability.
  • a half of the transmission housing 30 is integrally formed with the pump body 46.
  • the length of the handheld pressure washer 1 is also mainly determined by the configuration and arrangement of the functional components 20.
  • the length l of the pump 4 is greater than the height h of the pump, and the pump 4 is vertically arranged in the casing 10 (that is, in a vertical direction, the upper pump cover 462 is distributed on the upper end of the lower pump cover 463. (Arranged in the housing) so that the length of the functional component 20 in the front-back direction is not greater than 200 mm.
  • the transmission mechanism 3 includes an eccentric mechanism 7 connected to a motor.
  • the plunger 5 has a mounting portion 50 for mounting the eccentric mechanism 7 on a side portion in the longitudinal direction of the vertical plunger 5.
  • the mounting portion 50 is a concave cavity recessed inward.
  • the mounting portion 50 is located at the center of the plunger 5.
  • the eccentric mechanism 7 is fixed in the mounting portion 50 by a mounting bearing 71.
  • the form of fixed installation is not limited to the installation of the bearing 71, and may also include common methods such as flat fitting and spline fitting. Of course, those skilled in the art can think that the eccentric mechanism 7 can also be integrally formed with the plunger 5.
  • the eccentric mechanism 7 includes an eccentric shaft 72 and a rotating shaft 33 connected to the eccentric shaft 72.
  • the eccentric shaft 72 is fixedly connected to the rotating shaft 33, and the connection method may be integrally formed.
  • the center of the rotating shaft 33 and the center of the eccentric shaft 72 are relatively eccentric.
  • the rotation shaft 33 is provided with a support bearing 34 which functions to support the rotation shaft 33.
  • the eccentric distance between the center of the rotation shaft 33 and the center of the eccentric shaft 72 is d.
  • the transmission mechanism 3 drives the rotation shaft 33 to rotate around the center of the rotation shaft 33, and the eccentric shaft 72 drives the plunger 5 to rotate around the center of the eccentric shaft 72 through the mounting portion 50 and the mounting bearing 71.
  • the plunger 5 makes an eccentric rotational movement relative to the rotating shaft 33.
  • the eccentric mechanism 7 is located at least partially within the pump body 46. That is, in the front-rear direction, the eccentric mechanism 7 and the pump 4 only partially overlap.
  • the eccentric shaft 72 of the eccentric mechanism 7 is installed in the center of the plunger 5 through the housing 10 vertically arranged by the single plunger pump 4, so that the length of the functional component 20 in the front-back direction is minimized.
  • the length of the functional component 20 in the front-back direction is not greater than 150 mm, so that the length of the entire machine in the front-back direction is the shortest.
  • the reduction mechanism is a gear transmission.
  • the reduction mechanism includes a small gear 31 connected to the motor shaft 21 and a large gear 32 meshing with the small gear 31.
  • the large gear 32 is fixedly connected to the rotating shaft 33.
  • the rotating shaft 33 is disposed parallel to the motor shaft 21.
  • the motor shaft 21 drives the rotating shaft 33 to rotate around its center.
  • the eccentric shaft 72 is fixedly connected to the rotation shaft 33, the eccentric shaft 72 also rotates around the center of the rotation shaft 33, so the eccentric shaft 72 drives the plunger 5 to rotate around the center of the rotation shaft 33. Therefore, the motor 2 can drive the plunger 5 to perform eccentric motion.
  • the motor 2 drives the plunger 5 through a first-stage gear transmission.
  • the reduction mechanism includes a first bevel gear 351 connected to the motor shaft 21 and a second bevel gear 352 connected to the rotating shaft 33.
  • the first bevel gear 351 and the second bevel gear 352 mesh with each other.
  • the motor shaft 21 and the rotating shaft 33 are arranged vertically.
  • the mounting portion 50 of the plunger 5 is also used to be fixedly connected to an eccentric shaft 72 which is disposed eccentrically with the rotating shaft 33.
  • the motor 2 drives the plunger 5 to perform eccentric motion.
  • the motor 2 drives the plunger 5 through a one-stage bevel gear transmission.
  • the motor 2 drives the plunger 5 through a multi-stage gear transmission.
  • the reduction mechanism includes an intermediate shaft 36 and a rotating shaft 33 that is drivingly connected to the intermediate shaft 36.
  • the intermediate shaft 36 is disposed parallel to the motor shaft 21.
  • the intermediate shaft 36 and the motor shaft 21 are drivingly connected by a first gear 361.
  • the rotating shaft 33 is not directly connected to the motor shaft 21.
  • the rotating shaft 33 and the intermediate shaft 36 are drivingly connected through a secondary gear 362.
  • the rotating shaft 33 and the plunger 5 adopt an eccentric connection similar to the foregoing embodiments.
  • the rotating shaft 33 is disposed in parallel with the intermediate shaft 36.
  • the reduction mechanism is a planetary gear reduction mechanism 302.
  • the planetary gear reduction mechanism includes a sun gear 320, planet gears 322 and 324, and an internal gear 321.
  • the sun gear 320 is fixedly disposed on the motor shaft.
  • the planet gears 322 and 324 include two gears of the same size, the planet gears 322 and 324 meshes with the sun gear 320 and the internal gear 321, respectively, and is fixedly connected with the eccentric mechanism 7.
  • the motor shaft rotates
  • the planetary gear 322 is driven to make a circular motion around the internal gear 321.
  • the eccentric mechanism 7 is driven to perform a rotary motion.
  • planetary gear reduction is adopted, and the sun gear is fixedly arranged with the motor shaft.
  • the reduction ratio is constant, the volume of the reduction mechanism can be minimized, thereby making the handheld high-pressure cleaner 1 more compact and portable.
  • the plunger 5 is connected to the eccentric mechanism 7, and the eccentric rotation of the eccentric mechanism 7 drives the plunger 5 to reciprocate linearly along its length direction.
  • the present invention is not limited to the connection of the plunger 5 with the eccentric mechanism 7, and the plunger 5 may also be connected with other mechanisms to realize a linear reciprocating motion along its length direction.
  • the plunger 5 is connected to the crank link mechanism 8.
  • the crank link mechanism 8 includes a link 81 and a crank 82 connected to each other. One end of the connecting rod 81 is connected to the crank 82, and the other end of the connecting rod 81 is connected to the plunger 5.
  • crank link mechanism 8 can convert the rotational movement of the transmission mechanism 3 into a reciprocating movement of the plunger 5 in the length direction thereof.
  • FIG. 13 shows that the plunger 5 is in a first state under the action of the crank link mechanism 8; and
  • FIG. 14 shows that the plunger 5 is in a second state.
  • the transmission mechanism 3 includes a transmission shaft 38 drivingly connected to the motor shaft 21.
  • the transmission shaft 38 is connected to the motor shaft 21 through a gear meshing transmission.
  • the transmission shaft 38 is disposed in parallel with the motor shaft 21.
  • a support bearing 34 is provided on the transmission shaft 38.
  • the transmission shaft 38 is connected to the driving wheel 51 in a direction in which the transmission shaft 38 extends.
  • the rotation of the motor 2 drives the transmission shaft 38 to rotate, and the transmission shaft 38 drives the driving wheel 51 and the driven wheel 52 to rotate.
  • water can move to the second chamber 54 from the first chamber 53.
  • the transmission mechanism 3 can be integrated with the pump 4, thereby further reducing the overall volume size.
  • the pump 4 has a driving wheel 51 connected to the transmission mechanism 3 and a driven wheel 52 engaging the driving wheel 51.
  • the pump 4 further includes a first chamber 53 and a second chamber 54 respectively provided on the corresponding sides of the driving wheel 51.
  • the first chamber 53 and the second chamber 54 are isolated by the driving wheel 51 and the driven wheel 52.
  • the first chamber 53 is connected to a water inlet 431 and the second chamber 54 is connected to a water outlet 441.
  • the gap between the gears of the driving wheel 51 or the driven wheel 52 forms a transport cavity 55 that contains water.
  • the rotation direction of the driving wheel 51 is a clockwise direction
  • the rotation direction of the driven wheel 52 is a counterclockwise direction.
  • the transport chamber 55 communicates with the first chamber 53, and the water in the first chamber 53 enters the transport chamber 55 and moves toward the second chamber 54.
  • the inner wall 48 of the casing of the pump 4 has a sealing effect on the transport chamber 55, so that water in the transport chamber 55 will not cause leakage to the outside.
  • the driving wheel 51 is rotated to a position where the transport chamber 55 is in communication with the second chamber 54, the water in the transport chamber 55 moves into the second chamber 54 and is finally discharged outward from the water outlet 441.
  • the water in the first chamber 53 can also enter the transport chamber 55 of the driven wheel 52. It is transported into the second chamber 54 via the driven wheel 52.
  • the advantage of using this type of pump is that the overall structure is more compact.

Abstract

一种手持式高压清洗机,包括:外壳(10);功能部件(20),所述功能部件(20)包括设置在所述外壳(10)内的电机(2)、由所述电机(2)驱动的泵(4)以及传动机构(3);所述泵(4)包括泵体(46)、收容在所述泵体(46)内的柱塞(5)、设置在所述泵体(46)上的进水口(431)和出水口(441)以及中央腔室(41);所述传动机构(3)连接所述柱塞(5),所述电机(2)通过所述传动机构(3)带动所述柱塞(5)往复运动;所述柱塞(5)的数量仅有一个,所述泵(4)还包括可拆卸的安装在所述泵体(46)上的上泵盖(462)和下泵盖(463),所述中央腔室(41)包括形成在所述上泵盖(462)内的上空腔(421)、及形成在所述下泵盖(463)内的下空腔(422)。

Description

手持式高压清洗机 技术领域
本发明涉及一种手持式高压清洗机。
背景技术
在家庭生活和户外活动中,清洁需求一直广泛存在。
在以家庭庭院为中心的家庭生活中,人们常常需要清洁阳台、走道、户外桌椅、烧烤架、汽车、自行车、车库、宠物、园林工具、窗户、泳池、室外台阶等。这些物品由于使用场景位于房屋外,会不可避免的沾上泥污、油渍、树叶、积尘等污渍,用抹布来清洁极为不便,需要使用水流甚至是高压水流进行喷洗。为了满足上述需求,市面上的解决方案为提供家用的高压清洗机,如中国专利CN1840246A揭示,这些高压清洗机通常具有一个主机和一个喷枪,主机上设置水箱和马达、水泵,喷枪上设置喷水的触发开关。这些高压清洗机体积较大、重量较重,在各个工作场景中切换时,搬运麻烦。例如,在家庭清洁日中,如果需要逐个清洗窗户、车道、台阶、汽车,那就要在不同的地点之间来回搬运高压清洗机。此外,使用高压清洗机前需要向水箱加水,操作也不够简单。
而在户外活动,比如登山、越野、骑行、野营、骑马、驾船等活动中,由于环境更加贴近自然且活动激烈,活动涉及的用具和动物更加容易变脏,需要及时清洁。例如,汽车、摩托车和自行车在野地行驶之后,必然沾满泥土,舰船木筏等在航行之后,船身附着的泥巴水草也需要清理。马匹和用户也会出汗和粘泥,最好及时淋浴或者冲洗,以免身体不舒服。前述的高压清洗机由于体积大、重量重、不适合在上述各类户外活动中都随身携带。前述的高压清洗机由于使用交流电源供电,在户外活动中很难找到匹配的电源。用户往往只能忍受活动中的污渍、待活动结束后、返回固定地点时再进行清洁;或者在活动中路过水源时用抹布简单擦拭,清洁效率低、效果差且清洁过程比较脏。
综上,用户在各种场景下、各个地点处都存在着清洁需求,但是目前市面上的相关产品便携性差,只能在很有限的场景和地点使用,用户不能随时 随地进行清洁。若能提供一种产品,能够在各类家庭清洁活动中方便省力的移动,清洁阳台、车道、汽车等,还能在满足用户家庭清洁需求的同时,在越野、骑行等活动中随身携带,满足户外活动的清洁需求,将极大的简化用户的清洁工作、扩大清洁工作的地点范围,从而提高用户的生活品质。
影响高压清洗机实现便携功能的主要原因主要是由于高压清洗机中的泵占据的体积较大且泵的重量较重。一种常见的泵的结构如中国专利CN1212899C所示,其通过活塞及摆动轮盘进行驱动工作。而摆动轮盘及活塞需要较多的工作腔体,因此该种泵的结构比较复杂,重量和体积均比较大。
影响高压清洗机实现户外使用功能的主要原因是由于高压清洗机采用交流电源。交流供电的高压清洗机受限于电源供应,其使用场景必须配备相应的交流电源,降低了户外场景应用的便捷性;交流供电的高压清洗机受限于电源线的长度,其清洗范围只能在电源线长度范围之内,限缩了高压清洗机的清洗范围和可移动性。
发明内容
有鉴于此,本发明的目的之一在于提供一种体积小、重量轻的手持式高压清洗机,以提升便携性。
为实现上述目的,本发明所采用的技术方案是:
一种手持式高压清洗机,其包括:外壳,包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;功能部件,所述功能部件包括设置在所述外壳内的电机、由所述电机驱动的泵以及传动机构;所述泵由所述电机带动向外输送清洗液体,所述泵包括泵体、收容在所述泵体内的柱塞、设置在所述泵体上的进水口和出水口以及中央腔室,所述柱塞运动带动清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;所述传动机构连接所述柱塞,所述电机通过所述传动机构带动所述柱塞往复运动;其特征在于,所述柱塞的数量仅有一个,所述泵还包括可拆卸的安装在所述泵体上的上泵盖和下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动。
在其中一种实施方式中,以所述功能部件在前后方向上的长度不大于200mm,将所述上泵盖分布在所述下泵盖上端的排布方式使得所述泵配置在所述外壳中。
在其中一种实施方式中,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述柱塞的长度延伸方向与所述中分面相平行。
在其中一种实施方式中,所述传动机构包括与所述电机连接的偏心机构,所述柱塞的中部向内凹陷形成有安装部,所述偏心机构与所述安装部连接并在所述电机的驱动下,带动所述柱塞在所述泵体内作往复运动。
在其中一种实施方式中,所述出水口的开口方向与所述柱塞的往复运动方向大致垂直,且所述出水口位于所述柱塞的前方。
在其中一种实施方式中,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述出口之间,且所述出水口的开口方向与所述出口的开口方向一致。
在其中一种实施方式中,所述出水口和所述进水口排布在所述柱塞的同侧,且在左右方向上,所述出水口的轴心位于所述中分面上或者自所述中分面向左或向右偏离的尺寸范围不大于所述泵体宽度的30%。
在其中一种实施方式中,所述泵还包括与所述进水口连通的进水腔、与所述出水口连通的出水腔以及单向阀单元,所述单向阀单元用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央腔室单向流出至所述出水腔中,至少所述进水腔或者至少所述出水腔位于所述柱塞的前方。
在其中一种实施方式中,所述进水腔和所述出水腔均设置在所述柱塞的前方,且所述进水腔和所述出水腔在左右方向上相邻布置。
在其中一种实施方式中,所述进水腔和所述出水腔的延伸方向与所述柱塞的往复运动方向相平行,所述出水口和所述进水口均设置在所述进水腔和所述出水腔的前方,且所述出水口、所述进水口的开口方向与所述出水腔、进水腔的延伸方向相垂直。
在其中一种实施方式中,所述手持式高压清洗机还包括为所述电机供电的电池包,所述功能部件位于所述手柄的一端,所述电池包位于所述手柄的另一端。
在其中一种实施方式中,所述功能部件设置在所述主体部内,所述主体部大致沿清洗液体的喷射方向延伸,以所述手持式高压清洗机的重心G位于所述手柄的前端点和后端点之间的方式,将所述手柄配置成所述手柄的延伸方向和所述主体部的延伸方向形成的夹角大于90度,且小于等于160度。
在其中一种实施方式中,所述手持式高压清洗机的出液部设有附件附接部,该附件附接部被配置为允许与喷头可拆卸地连接,所述喷头包括一定长度的喷杆及连接在喷杆一端的喷嘴,将所述手柄前端点向前的元件定义为喷枪组件,将所述手柄后端点向后和向下的元件定义为电源组件,所述喷枪组件的重量大于所述电源组件的重量。
有鉴于此,本发明的目的之一在于提供一种体积小、重量轻的手持式高压清洗机,以提升便携性。
为实现上述目的,本发明所采用的技术方案是:
一种手持式高压清洗机,其包括:外壳,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述外壳包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;功能部件,所述功能部件包括设置在所述外壳内的电机、由所述电机驱动的泵以及传动机构;其特征在于,所述泵包括泵体、设置在所述泵体内的单个柱塞、设置在所述泵体上的进水口和出水口以及中央腔室,所述柱塞运动带动所述清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;所述传动机构连接所述柱塞,并可操作地带动所述柱塞在其长度延伸方向上作往复运动;
所述外壳包括至少部分包裹于所述泵的外围的泵壳体,以所述泵壳体在左右方向上的宽度与所述手柄在左右方向上的宽度的比值不大于3的方式将所述泵设置在所述外壳内。
在其中一种实施方式中,所述泵包括设置在所述柱塞一端的上泵盖及设置在所述柱塞另一端的下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动,在左右方向上,所述上、下泵盖均延伸越过所述中分面。
在其中一种实施方式中,以所述柱塞的长度延伸方向与所述中分面相平行的方式将所述泵配置在所述外壳内。
在其中一种实施方式中,所述泵还包括与所述进水口连通的进水腔、与所述出水口连通的出水腔以及单向阀单元,所述单向阀单元用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央 腔室单向流出至所述出水腔中,所述进水腔和所述出水腔相邻布置在所述柱塞的同侧。
在其中一种实施方式中,所述进水腔和所述出水腔在上下方向上贯穿于所述泵体,且所述进水腔和所述出水腔均设置在所述柱塞的前方。
在其中一种实施方式中,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述开口之间,且所述出水口的开口方向与所述出口的开口方向一致。
在其中一种实施方式中,所述出水口和所述进水口并排排布在所述柱塞的同侧,且在左右方向上,所述出水口的轴心位于所述中分面上或者自所述中分面向左或向右偏离的尺寸范围不大于所述泵体宽度的30%。
有鉴于此,本发明的目的之一在于提供一种体积小、重量轻的手持式高压清洗机,以提升便携性。
为实现上述目的,本发明所采用的技术方案是:
一种手持式高压清洗机,其包括:
外壳,包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;
电机,设置在所述外壳内,为所述手持式高压清洗机作业提供驱动力;
泵,由所述电机带动向外输送清洗液体,所述泵包括泵体、收容在所述泵体内的柱塞、设置在所述泵体上的进水口和出水口、与所述进水口连通的进水腔,与所述出水口连通的出水腔以及中央腔室,所述柱塞运动带动所述清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;
传动机构,连接所述柱塞,所述柱塞通过所述传动机构受到所述电机的驱动;
单向阀单元,用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央腔室单向流出至所述出水腔中;
所述单向阀单元包括设置在所述出水腔上的第一出水阀,所述第一出水阀包括阀体、位于所述阀体内的单向阀门和偏压所述单向阀门的偏压件,清洗液体可操作地挤压所述单向阀门,并促使所述单向阀门在所述阀体内移动, 所述单向阀门和所述阀体的接触面与所述出水口的最高端之间的垂直距离小于等于20mm。
在其中一种实施方式中,所述第一出水阀的单向阀门和所述阀体的接触面与所述出水口的最高端之间的垂直距离小于等于5mm。
在其中一种实施方式中,所述第一出水阀的单向阀门移动的方向与所述柱塞相平行,在所述单向阀门移动的方向上,所述出水口的最高端位于所述单向阀门和所述阀体的接触面的下方或者所述出水口的最高端与所述单向阀门和所述阀体的接触面大致位于同一高度。
在其中一种实施方式中,所述泵还包括收容所述柱塞的柱塞孔,所述柱塞孔在上下方向上延伸,定义穿过所述柱塞孔长度的一半,且与所述柱塞的往复运动方向相垂直的面为泵在前后方向上的中剖面R,在上下方向上,所述出水口的最底端与所述中剖面R相平齐,或者所述出水口的最底端位于所述中剖面R的上方。
在其中一种实施方式中,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述柱塞的长度延伸方向与所述中分面相平行。
在其中一种实施方式中,所述泵包括设置在所述柱塞一端的上泵盖及设置在所述柱塞另一端的下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动,在左右方向上,所述上、下泵盖均延伸越过所述中分面。
在其中一种实施方式中,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述开口之间,且所述出水口的开口方向与所述出口的开口方向一致。
在其中一种实施方式中,所述进水腔和所述出水腔均设置在所述柱塞的前方,且所述进水腔和所述出水腔在左右方向上相邻布置。
在其中一种实施方式中,所述进水腔和所述出水腔的延伸方向与所述柱塞的往复运动方向相平行,所述出水口和所述进水口均设置在所述进水腔和 所述出水腔的前方,且所述出水口、所述进水口的开口方向与所述出水腔、进水腔的延伸方向相垂直。
在其中一种实施方式中,所述进水腔和所述出水腔在上下方向上贯穿于所述泵体,所述单向阀单元还包括第二出水阀,所述第一出水阀设置在所述出水腔的上端,所述第二出水阀设置在所述出水腔的下端。
附图说明
以上所述的本发明的目的、技术方案以及有益效果可以通过下面的能够实现本发明的具体实施例的详细描述,同时结合附图描述而清楚地获得。
附图以及说明书中的相同的标号和符号用于代表相同的或者等同的元件。
图1是本发明一实施例的高压清洗机的示意图。
图2是图1所示的高压清洗机的一种具体结构图。
图3是本发明另一实施例的高压清洗机的示意图。
图4是本发明一实施例中的泵、传动机构和电机的整体示意图。
图5是图4中的泵、传动机构和电机的爆炸分解示意图。
图6是图4中的泵沿剖面线AA的剖视图,其中柱塞处于第一状态。
图7是图4中的泵沿剖面线AA的剖视图,其中柱塞处于第二状态。
图8是图4中的泵沿剖面线BB的剖视图。
图9是图4中的泵沿剖面线CC的剖视图。
图10是高压清洗机的传动机构的一实施例的示意图。
图11是高压清洗机的传动机构的另一实施例的示意图。
图12是高压清洗机的传动机构的另外一实施例的示意图。
图13是本发明实施例中泵通过曲柄连杆机构连接柱塞的示意图,其中柱塞处于第一状态。
图14是本发明实施例中泵通过曲柄连杆机构连接柱塞的示意图,其中柱塞处于第二状态。
图15是本发明第二实施例的泵结构的示意图。
图16是图15中的泵结构沿另一视角的示意图。
图17是图1所示的高压清洗机的另一种具体结构图。
图18是图17中高压清洗机去掉部分外壳且连接有电池包的结构图。
图19是图17所示高压清洗机沿上下方向上的剖视图。
图20是图17所示的高压清洗机的俯视图。
图21是操作者单手握持高压清洗机的立体示意图。
图22是图17所示的高压清洗机的功能部件的立体示意图。
图23是图22所示的高压清洗机的功能部件沿剖面线EE的剖视图,其中柱塞处于第一状态。
图24是图22所示的高压清洗机的功能部件沿剖面线EE的剖视图,其中柱塞处于第二状态。
图25是图17所示的高压清洗机的泵的前视图。
图26是图25所示的高压清洗机的泵的局部爆炸图。
图27是图26另一视角的立体示意图。
图28是图25所示的高压清洗机的泵沿剖面线FF的剖视图。
图29是图17所示的泵体和部分减速机构壳体的立体示意图。
图30是图29所示的泵体和部分减速机构壳体的另一角度的示意图。
图31是图17所示的高压清洗机的泵的柱塞与偏心机构的连接结构图。
图32是图17所示的高压清洗机的行星齿轮减速机构的示意图。
图33是图17所示高压清洗机连接有喷头和电池包的示意图。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
如图1所示是本发明一实施例的高压清洗机1的示意图。图2和图17是图1所示的高压清洗机1的一种具体结构图。该高压清洗机1为手持式,手持式高压清洗机1具有大致呈手枪状的外壳10、设置在外壳10中的功能部件20、设置于外壳10上并用于控制手持式高压清洗机1处于开启状态或者关闭状态的触发件105、以及具有水路通道的进水阀密封系统(未图示)及进液接头16。
在本公开实施例中,为了便于理解,以图2、图17的左侧为前方(即水 流喷射的方向为前方),右侧为后方,图纸的上方定义为上方,图纸的下方定义为下方。图纸向外定义为左侧,图纸向内定义为右侧。即如图20所表示的左侧和右侧。上述定义仅为了说明,并不能理解为对于本公开实施例的限定。
外壳10包括用于握持的手柄106、与手柄106呈角度设置的主体部107及供清洗液体向外喷出的出液部108。在本实施方式中,外壳10采用左右哈弗结构。具体的,如图20、21所示,外壳10具有一中分面T及关于中分面T大致对称设置的第一半壳101和第二半壳102。需要说明的是,在本公开实施例中,中分面T可以理解为第一半壳101和第二半壳102对合的缝所延展形成的平面。出液部108于其自由端部设有出口1081。即出口1081设置在远离手柄106的一端。
功能部件20包括设置在外壳10中的电机2、连接电机2的传动机构3、受传动机构3带动的泵4。在本实施方式中,功能部件20存放于主体部107内。
触发件105以其与手柄106的连接处为支点可转动地设置于手柄106上,且触发件105部分收容于主体部107内。其中,触发件105具体为一扳机。手持式高压清洗机1还包括控制组件(未图示),其中,泵4和电机2均与控制组件连接。当需要实现清洗作业时,可以通过触发件105向控制组件输入清洗信号,并导通进水阀密封系统内的水路,外部水源可在泵4与电机2的作用下经进水阀密封系统内水路,再由出口1081喷射出来以对物体表面进行清洗。
在本公开实施例中,手持式高压清洗机1的出液部108上设有附件附接部(未标示),该附件附接部可操作地与喷头11连接。喷头11包括一定长度的喷杆111及连接在喷杆111一端的喷嘴112。手柄106与喷头11呈角度设置。
出于手持便携性的要求,高压清洗机1本身不具有用于存储水源的水箱,而是通过水管连接至外部水源,外部水源可以是池塘、水龙头等。外部水源的水经过泵的加压后从喷头11向外喷出。该种手持式的高压清洗机体积小,重量轻,便于操控。
具体的,如图2和图18所示,进液接头16的一端可装配至外壳10上或 与外壳10一体形成,另一端悬空且设有入水端口104,进液接头16通过入水端口104与外部通有液体的水管连接以将液体引导入手持式高压清洗机1内部。入水端口104靠近手柄106设置。具体的,在前后方向上,入水端口104向前不超过电机2的最前端,且入水端口104大致位于电机2的下方。这样的话,一方面,便于用户单手握持机器的同时,另一只手可以随时移动配接至入水端口104处的水管;另一方面,可以使得水管的重量也靠近手柄106,在手持式高压清洗机1连接有水管的情况下,重心仍然靠近手柄106,有效地缓解了操作者单手作业过程中出现的手臂疲劳现象,改善了操作者的工作体验。
该手持式高压清洗机1可以采用交流或者直流进行供电。由于交流供电的手持式高压清洗机会受限于电源供应,其使用场景必须配备相应的交流电源,降低了户外场景应用的便捷性;此外,交流供电的手持式高压清洗机受限于电源线的长度,其清洗范围只能在电源线长度范围之内,限缩了手持式高压清洗机的清洗范围和可移动性。因此,在本实施方式中,优选的,手持式高压清洗机为直流供电。具体的,直流电源为可充电的电池包9。电池包9以能够装拆的方式安装在外壳10上,以向电机2供电。其中电池包9的数量可以为一个或者两个或者多个。本发明介绍的实施方式中,电池包9的数量为一个。该电池包9至少适配连接在不同种类的直流工具上,可以通用于直流吹风机、打草机、割草机、链锯、修枝剪、电钻、电锤、电圆锯等电动工具上。例如,本实施例中,用户甚至可以仅购买高压清洗机1的主机,并通过利用已有其他工具(如吹风机、打草机等)上的电池包来适配高压清洗机1,真正实现能源共享,有利于电池包平台的通用。
参照图2,如前所述,该手持式高压清洗机1本身不包括水箱,而是在入水端口104连接水管14,再由水管14连接到外部水源。这样,在入水端口104连接了水管14后,在家庭活动中,只需将水管的尾端接上水龙头或者放入泳池、池塘、水桶等外部水源中,用户就可以手持高压清洗机,在水管的长度范围内自由活动,进行喷水清洁工作。在户外活动中,用户只需随时在有水的地方停下,将水管的尾端放入外部水源,就可以进行喷水清洁工作。泵能够将外部水源中的水吸入高压清洗机后直接向外喷出。
为了实现可随身携带、可清洁各类物品,手持式高压清洗机1需要同时实现轻量化和高清洁能力,而这两者是相互矛盾的。为实现手持式高压清洗机的轻量化,需要尽量减小电池包9和功能部件20的重量,然而,电池包9的轻量化将缩短手持式高压清洗机1的工作时间,功能部件20的轻量化会减弱手持式高压清洗机1的清洁效率,从而降低清洁能力。同时,工作时间和清洁效率也相互制约,相同的电池包9、工作时间越长意味着清洁能力越弱;反之,清洁能力越强意味着工作时间越短。因此,本实施例需要平衡高压清洗机的重量、工作时间和清洁效率。
手持式高压清洗机1的有效清洁效率k等于工作水压P乘以工作水流量Q。评价高压清洗机的清洗效果一般看有效清洁效率,有效清洁效率越大,清洗效果越好。然而,在同一有效清洗效率下,工作水压和工作水流量是呈反比的,要提升清洗效果,本领域技术人员一般都是要求两者同时增大,可若两者同时增大,则势必要增大电机的功率,增加整机的重量,电池包9的续航时间也会减小,其与本公开实施例中定位的便携性手持式高压清洗机的理念是相悖的。
手持式高压清洗机1所适用的工作场景有很多,包括清洁阳台、走道、户外桌椅、汽车、自行车、车库、宠物、园林工具、窗户、泳池、室外台阶等。不同的工作场景对手持式高压清洗机1向外输出的工作水压和工作水流量都有不同的要求。其中,工作水压是指清洗污垢的能力,在一个恒定工作水流量下,工作水压越大,水流对单位面积目标物体的冲击力就会越大,污垢自目标物体表面的剥离率也越快。根据要清洗的目标物体不同,所要求的工作水压也会产生变化;工作水流量是指清洗污垢的效率,在一个恒定的工作水压下,工作水流量越大,完成清洗目标物体的时间越短。需要说明的是,上述恒定的工作水流量和恒定的工作水压,均可理解为能够与相应的工作水压或工作水流量配合,进行清洗目标物体的最低值。
电池包续航时间是指电池包能够维持手持式高压清洗机1正常工作的时间。其中电池包9续航时间不仅与电池包自身配置相关,还受到手持式高压清洗机1的工作模式的影响。同样容量的电池包,当手持式高压清洗机1工作时所用的工作水压高,且工作水流量也大或者工作水压与工作水流量中的 其中一个较大,那么相较于工作水压与工作水流量均小的手持式高压清洗机,电池包的续航时间就会缩短。
本公开实施例提供的手持式高压清洗机,其向外输出的工作水压为0.4Mpa~5Mpa,向外输出的工作水流量为1.5L/Min~6L/Min。优选的,手持式高压清洗机向外输出的工作水压为1.8~2.49Mpa,向外输出的工作水流量为3~4.5L/Min。当然手持式高压清洗机向外输出的工作水压可以为2Mpa、2.2Mpa、2.4Mpa,向外输出的工作水流量可以为3L/Min、3.5L/Min、4L/Min。
进一步的,需要再次声明的是,本公开实施例中的高压清洗机1的定位是便携性的手持式高压清洗机。那么在清洗性能(工作水压及工作水流量)定义完成的情况下。操作者关心的是机器是否足够小、是否足够轻便、是否有足够的续航时间。这也是发明人需要研究克服的关键问题。
在本公开实施例中,手持式高压清洗机1的整机重量小于等于3公斤,在可选的实施方案中,整机重量小于2.8公斤、2.5公斤、2公斤、或1.8公斤、或1.7公斤、或1.5公斤。在一种实施例中,功能部件20的重量小于等于1000克,电池包9重量小于等于800克;在另一可选的实施例中,功能部件的重量小于等于600克,电池包9的重量小于等于400克。在一种实施例中,除功能部件20和电池包9之外的其他部件的重量小于等于500克,更优的,其他部件的重量小于400克或300克。较轻的重量使得手持式高压清洗机1能够被长时间手持进行清洁工作。本实施例中,电池包9采用额定电压在18-42V之间,1.5-3Ah的锂电池包,以提供足够的工作能量且轻量化。在其他可选的实施例中,电池包的额定电压也可位于28V至60V之间。具体的,在本公开实施例中,单个电池包采用额定电压为20V,2Ah的电池包。手持式高压清洗机向外连续喷出水流的时间为10~60分钟。
电机2、传动机构3和泵4将在下文详述,其具体结构均兼顾了轻量化和清洁能力。
除了重量本身,重心位置也影响用户实际的重量体验。在本实施例中,功能部件中泵4、传动机构3和电机2由前向后依次布置,位于手柄106的一端;电池包9位于手柄106的另一端,使得功能部件的重心位置位于手柄前端点的前方,电池包的重心位置位于手柄前端点的后方。在一种可选的实 施方案中,分别位于手柄106两端的功能部件和电池包9中的至少一个部分的伸入到手柄106中。在一种可选的实施方案中,功能部件20中泵4、传动机构3和电机2全部或部分与手柄106平行设置,如泵4位于手柄106的一端、传动机构3和电机2与手柄106平行设置。
功能部件20和电池包9分别为手持式高压清洗机1的两个主要重量体,通过将功能部件20和电池包9分别布置在手柄106的两端,手持式高压清洗机1的重心G(这里以及下文中所描述的手持式高压清洗机的重心均指配接有电池包,但没有连接喷头的整机的重心)位于手柄106附近,从而使得用户在握持时重量基本落在用户手上,较为省力。具体的,如图21所示,手持式高压清洗机1的重心G落在手柄106后端点B往后8厘米至手柄106前端点A往前8厘米以内。在可选的实施例中,在手持式高压清洗机1前后方向上,该重心G落在手柄106后端点至手柄106前端点A往前5厘米、3厘米、2厘米、1厘米以内。在另一可选的实施例中,该重心G落在手柄106后端点B往后5厘米、3厘米、2厘米、1厘米至手柄106前端点A以内。在另一可选的实施例中,该重心G落手柄106后端点B至手柄前端点A之间。
在本实施例中,入水端口104位于手持式高压清洗机1重心G附近,具体的,位于重心G前后5厘米或3厘米内,这样可以使得连接在其上的水管14重量也落在重心G附近。入水端口104还位于手柄106附近,具体为,位于手柄106的前端点向前3厘米、5厘米到后端点向后3厘米、5厘米之间,这样可以减少用户移动时水管14和其他物体相互缠绕或牵绊的概率。
在本实施例中,如图33所示,手柄106在主体部107的后方,喷头11位于主体部107的前方。当手持式高压清洗机1连接有电池包9和喷头11时,为了方便描述,将手柄106前端点A向前的部分定义为喷枪组件103(即喷枪组件至少包括功能部件、出液部、喷头),将手柄106后端点B向后和向下的部分定义为电源组件90(即电源组件至少包括连接在手柄上的电池包安装部及电池包)。如图21所示,将用户握持手柄的握持支撑点定义为C。需要说明的是,握持支撑点C可以理解为当用户握持手柄时,用户的食指与扳机相抵接的位置。该握持支撑点C也是机器的偏转点。喷枪组件103的重心G1距离手柄106的握持支撑点C距离是L1。电源组件90的重心G2距离 手柄106的握持支撑点C的距离是L2。在本实施方式中,由于喷枪组件103的重量M1大于电源组件90的重量M2。发明人发现,若M1与L1的乘积大于M2与L2的乘积,那么操作者正常水平握持机器时,也就是喷杆111处于水平位置时,不仅需要一个提升机体的提拎力,还需要施加一个的克服该偏转的力F。克服偏转F的力由手腕施加,转动惯量(即M1与L1的乘积)越大,手腕施加的克服偏转的力F就越大,手腕处施力容易造成操作者疲劳,使操作者手腕酸痛,不宜工作时间太长。
为了便于用户更舒适的握持机器,尽可能提升用户的工作体验。本实施例增加了电源组件90的重心G2与手柄106的握持支撑点C之间的距离L2,即尽可能增加L2的长度,以减少操作者手腕处施加的力。具体的,在本实施方式中,参图17和图33,手柄106倾斜布置,将手柄106配置成手柄106的延伸方向X1和主体部107的延伸方向X2(主体部大致沿清洗液体的喷射方向延伸)形成的夹角大于90度,且小于180度。此外,为了保证操作者在握持时重量基本落在操作者手上,即手持式高压清洗机1的重心G位于手柄106的前端点A和后端点B之间,且尽量减少手持式高压清洗机1在前后方向上的长度。在本实施方式中,将手柄106配置成手柄106的延伸方向X1和主体部107的延伸方向X2(主体部107大致沿清洗液体的喷射方向延伸)形成的夹角大于100度,且小于160度。具体的,手柄和主体部延伸方向形成夹角为130度。可选的,夹角可以为110度、120度、125度、135度、140度、145度、150度。
为了提高便携性,在本实施例中,手持式高压清洗机1的整机长度小于500毫米,优选的,整机长度400毫米或350毫米。当采用不同长度的喷头时,手持式高压清洗机1的整机长度会有所变化,如采用长枪喷头时,高压清洗机的整机长度可达到1000毫米。优选的,手持式高压清洗机1不加任何喷头时,手持式高压清洗机1的本体的长度小于300或250毫米。手持式高压清洗机1的整机高度小于250毫米或200毫米,整机宽度(不包括电池包)小于150或100毫米。
图3示意了与便携性的手持式高压清洗机形态存在差异的另外一种高压清洗机,高压清洗机具有分离设置的主机12和喷枪13。喷枪13用于手持操 作。喷枪13上设有喷头11。喷枪13和主机12通过水管14连接。主机内12设有电机2、传动机构3和泵4。在优选的实施例中,主机12内还包括水箱15,水箱15能够存储一定量的水。这样可以使高压清洗机1在远离水源的地方工作。水箱15中的水通过泵4的加压后从水管14传输到喷枪13中,用户操作喷枪13指向待清洗的物体进行清洗。
以上不同形态的高压清洗机1均含有泵4、电机2和连接电机2与泵4的传动机构3。
如图4和图5所示。电机2为常见AC电机或者DC电机。电机2具有围绕其轴线转动的电机轴21。电机轴21向外输出旋转动力。传动机构3为保证密封性,通常具有包裹在外部的传动外壳30。传动外壳30上具有两个开口,一个开口使传动机构3与电机2连接,另一个开口使传动机构3与泵4连接。泵4通过传动机构3受到电机2的驱动,对进入泵4的水增加水压,提升出水的清洗效果。
在本公开的实施例中,高压清洗机的定位是便携性的手持式高压清洗机1。容易理解的是,该手持式高压清洗机需满足操作者在各种场景下、各个地点都可以便携的使用。而由于多个柱塞导致泵的体积和重量都比较大,且为了驱动多柱塞泵,需要很大的功率,势必消耗很多的能量。本实施例的高压清洗机是以充电电池包作为电源,所以,需要尽可能的减少能量的消耗,以便延长持续工作时间。
因此,本实施例中,请参照图4、图5、图19、图23和图24,泵4内部设置有单个柱塞5,也就是说泵4为单柱塞泵。根据以上分析,多柱塞泵的重量和体积的问题被解决了。而且单个柱塞泵4所需要的驱动能量大概是三柱塞的1/3,两柱塞的1/2,有效延长了单电池包9的工作时间。
而现有的柱塞泵的驱动结构,是通过驱动柱塞的一端,另一端连接高压腔室,使柱塞在高压腔室内往复运动,对水进行加压。若是采用2个柱塞的泵,一般通过两柱塞以180度相位差往复运动,若是3个柱塞,通过柱塞以120度相位差往复运动,因此清洗液体几乎是被无脉动的持续排出。但是,对于单柱塞的泵,只有一个空腔供柱塞挤压,泵在一个往复运动周期内,有一半周期是在吸水,另一半周期在排水,也就是说,单柱塞泵的每个周期中 有一半周期是不泵水的,为了能实现持续喷水,需要将电机的转速提高到一定范围,使在另一半周期所吸的水在整个周期内排出,这导致泵的出水压力的脉动很大。为了克服上述问题,本公开实施例,进一步提供了一种可持续泵水的单柱塞泵。
以下详述本公开实施例的泵4的具体结构。为了便于理解,如图4、图22、图25、图30所示,将泵4在水流喷射方向的尺寸定义为泵4的高度h,将与水流喷射方向相垂直,且与电机旋转轴线相垂直的方向上泵4的尺寸定义泵4的宽度w,将泵4沿柱塞5方向延伸的尺寸定义为泵4的长度l。上述定义仅为了说明,并不能理解为对本公开实施例的限定。
如图4~图7、图22~30所示,泵4包括泵体46、设置在泵体46上的进水口431、出水口441和连接传动机构3的连接口49、收容在泵体46内的单个柱塞5。柱塞5用于对水进行加压,柱塞5为沿长度方向延伸的柱体。优选的,柱塞5由金属材料制成,柱塞5的两个末端中空,采用密度更小的轻质体58填充,这样可以减轻柱塞5的质量,从而减轻柱塞5在往复运动过程中整机的振动问题,同时也减小了推进柱塞的功率,减小能量消耗。本实施例中,轻质体为塑料,其他实施例中也可以采用树脂,或轻质金属,如铝。
柱塞5的长度延伸方向分别与进水口431的开口方向和出水口441的开口方向垂直。柱塞5可被驱动地沿其长度方向进行往复运动。进水口431用于和外部的水源连接或者水管、水枪连接。水从该进水口431进入泵4的内部。优选地,进水口431的数量为一。当水在泵4的内部加压后,从出水口441排出。出水口441通常连通高压清洗机1的喷头11,这样喷头11可以喷出加压后的水。为了避免进出水的相互干扰,通常进水口431和出水口441分开设置。优选地,出水口441的数量为一。
为了装配方便,如图5、图25~29所示,泵4还包括可拆卸的安装在泵体46上的上泵盖462和下泵盖463。上泵盖462和下泵盖463对称的安装在泵体46的两侧。上下泵盖通过螺栓等常见的固定方式固定连接到泵体46上。当然在其他实施方式中,泵4也可以一体形成或者以本领域技术人员容易想到的多个零部件拼接形成。
如图6、图19、图23~24所示,泵4的内部还具有中央腔室41。中央腔 室41内部中空。柱塞5优选地容纳在中央腔室41中。中央腔室41沿柱塞5的长度方向延伸。中央腔室41沿柱塞5长度方向上的尺寸大于柱塞5的长度,使得柱塞5在该方向上作往复运动时中央腔室41内始终具有空腔42。在如图6、图23所示,当柱塞5移动至中央腔室41的下端时,空腔42位于中央腔室41的上端。如图7、图24所示,当柱塞5移动至中央腔室41的上端时,空腔42位于中央腔室41的下端。即,中央腔室41包括形成在上泵盖462内的上空腔421、及形成在下泵盖463内的下空腔422。传动机构3带动柱塞5的两端分别在上空腔421和下空腔422内作往复运动。当上、下泵盖462、463安装到泵体46上时形成完整的中央腔室41。
如图8、图9及图28所示,泵4还具有与中央腔室41分隔的进水腔43、出水腔44以及柱塞孔40,至少部分柱塞5收容在柱塞孔40内。进水腔43、出水腔44和中央腔室41大部分位于泵体46内。其中进水腔43和出水腔44相互平行设置且在上下方向上贯穿于泵体46。外部的水源自进水口431进入到进水腔43中,经过空腔42加压后形成高压水流,并最终从出水腔44向外排出。
在本实施例中,进水腔43、出水腔44和中央腔室41相互连通,形成贯通的连通通道。进水腔43包括了对称设置的第一进水腔432和第二进水腔433。从进水口431进入的水可以选择地进入第一进水腔432或第二进水腔433。中央腔室41分别连接第一进水腔432和第二进水腔433。在本实施例中,第一进水腔432连接于中央腔室41的一端,第二进水腔433连接于中央腔室41的相对的另一端。上、下泵盖462、463内均设有使中央腔室41分别与两进水腔连通的连接通道45,如图9所示。在本实施例中,在中央腔室41的一端设有用于连通第一进水腔432的连接通道45,在中央腔室41的另一端设有用于连通第二进水腔433的连接通道45。连接通道45的延伸方向与柱塞5的往复运动方向(即如图6所示的箭头OO’方向)相互垂直。
而出水腔44同样包括了对称设置的第一出水腔442和第二出水腔443。第一出水腔442和第二出水腔443同样分别连接中央腔室41,并且均连接到出水口441。第一出水腔442和第二出水腔443分别连接于中央腔室41的相对的一端。进一步地,第一出水腔442、第二出水腔443同样通过连接通道 45连接中央腔室41。也就是说,位于中央腔室41一端的连接通道45把第一进水腔432、第一出水腔442和中央腔室41连接贯通,而位于中央腔室41另一端的连接通道45把第二进水腔433、第二出水腔443和中央腔室41连接贯通。
由于进水腔43和出水腔44、柱塞孔40几乎决定了泵体46的体积,因此,为了使泵4更加紧凑小巧,进水腔43、出水腔44和柱塞孔40的排列方式和开孔大小需要特别考虑设计。本公开实施例中,进水腔43与出水腔44均设置在柱塞5的同一侧。具体的,进水腔43和出水腔44均设置在柱塞5的前方,且进水腔43和出水腔44在左右方向上(即泵4的宽度方向上)的相邻设置。柱塞孔40在上下方向上延伸,柱塞孔40的延伸方向和进水腔43、出水腔44的延伸方向一致。
请参照图25和30,定义穿过柱塞孔40长度的一半,且与柱塞5的往复运动方向相垂直的面为泵4在前后方向上的中剖面R。柱塞孔40在所述中剖面R上具有柱塞孔投影401,进水腔43在所述中剖面R上具有进水腔投影430,出水腔44在所述中剖面R上具有出水腔投影440。在本实施方式中,柱塞孔投影401、进水腔投影430、出水腔投影440均为规则的几何图形。具体的,三个投影均为圆形。三个投影的中心(即圆心)首尾相连形成一个等腰三角形。柱塞孔投影的中心U为顶点,顶角为35度~60度。优选的,顶角为40度。如此设计,使得柱塞孔40、进水腔43、出水腔44在左右方向上的排布更紧凑,抑制泵4的宽度在左右方向上的最大化。当然,在其他实施方式中三个投影也可为正方形或长方形或者非规则状的图形。更具体的,进水腔43与出水腔44在排列方向上的横向宽度范围是18mm-60mm。优选的,横向宽度范围是28mm。
关于进、出水口431、441的排布,本公开实施例主要提供两种可行实施方式,具体如下详述。
在其中一种实施方式中,如图4~8所示,进水口431的开口方向与出水口441的开口方向相互垂直。出水口441的开口方向与出液部108的出口1081的开口方向一致。进水口431位于柱塞5的左侧或者右侧,出水口441位于柱塞5的前侧。在上下方向上,进水口431设置在泵体46的中部,出水口 441也设置在泵体46的中部。
在另一种可实施方式中,如图22~30所示,为了使进水口431和出水口441的设置不增加泵4的横向宽度。进水口431和出水口441均设置在所述泵4靠近出口1081的一侧。进水口431设置于出水口441的下方。具体的,进、出水口431、441在柱塞5的延伸方向堆叠排布。进、出水口431、441堆叠排布在泵4的宽度的中间区域。这样设置不会额外增加泵4的宽度。且由于进水口431位于出水口441的正下方,无需额外的转接弯道,即可实现进液管435和进水口431的连接,结构紧凑,整机体积减小。本实施例中,在前后方向上,进水口431、出水口441均设置在进、出水腔43、44和出口1081之间。进一步的,进水口431的开口方向、出水口441的开口方向及出口1081的开口方向均相同。当手持式高压清洗机1处于开启状态,柱塞5运动带动外界水源自入水端口104流至所述泵4中,由泵4加压后自所述出水口441向所述出液部108排出。在本实施方式中,出水口441的开口方向和出液部108的出口1081的开口方向一致。如此设计,外界水源自所述出水口441直接向前流动,无需额外的弯道转向,进而能够减少从出液部108喷出水流的压力损失。
进一步的,在左右方向上,出水口441的轴心I位于手持式高压清洗机1的外壳10的中分面T上或者自所述中分面T向左或向右偏离的尺寸范围不大于泵体46宽度的30%。当出水口441的轴心I在中分面T上,此时,如图28和29所示,在前后方向上,进水口431的至少部分区域与进水腔43连通,出水口441的至少部分区域与出水腔44连通。这样设置使整个泵体46结构紧凑,泵4的宽度最小。当然,出水口441的轴心I也可以由中分面T向左或者向右偏离预设距离。
需要说明的是,“出水口的轴心”应该理解为:若出水口441为规则形状,即出水口441的几何中心;若出水口441为非规则形状,即出水口441的物理中心。
本实施例中,进、出水口431、441和进、出水腔43、44以及柱塞5依次按照从前向后的顺序设置,这样的设计,高压腔室内的水被柱塞5挤压形成的高压水流能够直接流入前侧的进水腔43,进而流入至前侧的出水口441, 水流顺向移动,抑制了出水压力损耗。
如图8和28所示,在本公开实施例中,泵4还包括用于控制通道中水通断的单向阀单元6。单向阀单元6包括对称设置的第一组单向阀单元61和第二组单向阀单元62。下面以第一组单向阀单元61为例进行说明。在本实施例中,第一组单向阀单元61包括了设置在第一进水腔432与中央腔室41之间的第一进水阀611和设置在中央腔室41与第一出水腔442之间的第一出水阀612。第一进水阀611用于控制第一进水腔432与中央腔室41之间水流的通断,第一出水阀612用于控制第一出水腔442与中央腔室41之间水流的通断。当第一进水阀611打开时,第一进水腔432的水可以流向中央腔室41中。并且由于第一进水阀611的单向导通作用,第一进水阀611控制水流只能从第一进水腔432向中央腔室41的方向移动。而当第一进水阀611关闭时,第一进水腔432的水无法移动进入中央腔室41,此时第一进水腔432与中央腔室41形成隔断。类似的,第一出水阀612打开时,中央腔室41中的水可以流向第一出水腔442,并且具有单向导通的作用。而第一出水阀612关闭时,中央腔室41中的水无法流向第一出水腔442,水积聚在中央腔室41中。
在本公开实施例中,中央腔室41中的柱塞5用于控制第一组单向阀单元61的打开和关闭。特别地,柱塞5可同时地控制第一进水阀611打开,并且此时控制第一出水阀612关闭。柱塞5还可以同时控制第一进水阀611关闭,而此时控制第一出水阀612打开。也就是说,柱塞5可以同时控制第一进水阀611和第一出水阀612分别处于打开或关闭的不同状态。如图6和23所示,定义柱塞5运动到中央腔室41的最下端为第一状态,在此状态下,柱塞5开始从最下端向上端运动。此时,第一进水阀611被打开,而此时第一出水阀612被关闭。因此水从第一进水腔432进入到中央腔室41中,并且不会从中央腔室41流出。水被积聚在中央腔室41内。然后柱塞5自中央腔室41的最下端继续向上端运动,并移动至中央腔室41的最上端(如图7和24所示),定义此时的柱塞5为第二状态。在该第二状态下,柱塞5开始自最上端向下端运动。此时,第一进水阀611被关闭,而第一出水阀612被打开。水无法从进水腔43补充进入中央腔室41,原先位于中央腔室41内的水受到柱塞5的挤压而产生高压,并流向第一出水腔442从出水口441流至喷头11 喷出。
类似的,柱塞5也可以控制第二组单向阀单元62的打开和关闭。第二组单向阀单元62包括第二进水阀621和第二出水阀622。第二进水阀621设置在第二进水腔433和中央腔室41之间,而第二出水阀622设置在中央腔室41与第二出水腔443之间。当柱塞5处于第一状态时,第二进水阀621关闭而第二出水阀622打开,因此位于中央腔室41的水从第二出水腔443流出。而当柱塞5处于第二状态时,第二进水阀621打开而第二出水阀622关闭,因此水从第二进水腔433进入中央腔室41。所以第二组单向阀单元62和第一组单向阀单元61能够起到互补的作用,提升泵的泵水效率。在柱塞5从第一状态向第二状态的移动过程中,从进水口431进入的水通过第一进水腔432进入中央腔室41,并随着柱塞5的挤压从第二出水腔443排出出水口441。而在柱塞5从第二状态向第一状态的移动过程中,从进水口431进入的水通过第二进水腔433进入中央腔室41,并随着柱塞5的挤压从第一出水腔442排出出水口441,并通过喷头11喷出。
进一步的,如图8和28所示,第一进水阀611包括阀体610、位于阀体610内的单向阀门613和偏压单向阀门613的偏压件614。在柱塞5处于第二状态下,偏压件614产生偏压力使单向阀门613封闭第一进水腔432。而随着柱塞5从第二状态向第一状态移动,靠近单向阀门613的腔体体积逐渐变大,从而产生克服偏压件614的压力越来越大,最终使单向阀门613打开,即第一进水阀611从关闭状态转变为打开状态。而第一出水阀612同样包括阀体617、位于阀体617内的单向阀门615和偏压单向阀门615的偏压件616。而第一出水阀612的单向阀门615方向与偏压件616偏压方向与第一进水阀611的单向阀门613方向与偏压件616的偏压方向正好相反。因此随着柱塞5从第二状态向第一状态移动,能够产生克服偏压件616的压力越来越小,并最终在偏压力的作用下单向阀门615封闭第一出水腔442。即第一出水阀612从打开状态转变为关闭状态。
由于第一组单向阀单元61与第二组单向阀单元62对称设置的关系,在柱塞5从第二状态向第一状态移动过程中,第二组单向阀单元62的第二进水阀621相应地从打开状态转变为关闭状态,而第二出水阀622相应地从关闭 状态转变为打开状态。
如上,在泵4的选型及结构确定后,关于单柱塞泵4与外壳10之间的位置关系,发明人也作了大量研究。本公开实施例提供的泵与外壳的装配关系,一方面,保证手持式高压清洗机1小巧便携;另一方面,还解决了高压清洗机1自吸时间长,且出水压力损耗大的问题。这个问题的解决是手持式高压清洗机1能否在工业上进行大规模推广的关键一步。具体如下详述泵4的装配位置和自吸的关系。
本公开实施例中提供的手持式高压清洗机1是通过水管14连接至外部水源,手持式高压清洗机1起始作业时,一方面,单柱塞泵4的内腔中本身具有空气,另一方面,连接的水管14内腔中也有一定量的空气,电机2带动柱塞5往复运动,使得外界水源推动水管14中的空气一同进入至泵4的中央腔室41内,下面以泵4的上泵盖462的进水和排水为例进行说明。
当柱塞5处于图6和图23中的第一状态时,由于进入至上空腔421内的水源中混有较多气体,当柱塞5从第一状态(图6和图23)向第二状态(图7和图24)的移动过程中,柱塞5挤压上泵盖462内的上空腔421,而由于上空腔421内混有较多的气体,柱塞5挤压水源的挤压力会不大于第一出水阀612上偏压件616施予单向阀门615的偏压力,气体会聚集在单向阀门615周围,导致打开不连续,即呈现出水不连续,进而导致出水压力损耗大,无法满足清洗作业需求。
而在柱塞5从第二状态向第一状态移动的过程中,可能存在至少两种情况,第一种情况:第一出水阀612的单向阀门615处于未完全闭合(即出水时气体聚集在单向阀门615周围,导致单向阀门615歪斜),这时柱塞5即使自中央腔室41的最上端继续向下端运动,并移动至中央腔室41的最下端,而由于上空腔漏气,因此无法完成吸水;第二种情况,第一出水阀612的单向阀门615处于完全闭合状态,由于上空腔421内存在较多气体,在上空腔421抽真空的过程中,气体发生膨胀,导致上空腔421内形成的负压不够,第一进水阀611的单向阀门613会呈现上下跳动的现象,导致进水不连续。如此,柱塞5无法同时控制第一进水阀611和第一出水阀612分别处于打开或者关闭的不同状态,手持式高压清洗机无法进行正常清洗作业。
为此,本公开实施例中,发明人利用气体在水中上浮的现象,对单柱塞泵4和外壳10的排布及单柱塞泵4本身结构进行了设计,以解决上述难题。具体的,由于水和气体混合时,气体会上浮。因此,本公开实施例将单柱塞泵4竖向布置在外壳10内,且出水口441靠近第一出水阀612的单向阀门613设置。如此设计,外界水源自进水口431流入至进水腔中,大部分气体会上浮并向进水腔43的上方流动。即使柱塞5处于第一状态(上空腔421抽真空状态),水和气体一同进入至上空腔421内,大部分气体处于上空腔421的最上方;此时,柱塞5移动至第二状态(挤压上空腔421),第一出水阀612处于打开状态,大部分气体会被挤压并从第一出水阀612向外涌出。进一步的,由于出水口441紧邻第一出水阀612的单向阀门615设置,因此,气体流动的路径短,很快从出水口441向外排出。
在本公开实施例中,第一出水阀612的单向阀门615和阀体617的接触面与出水口441的最高端之间的垂直距离L3小于等于20mm。可选的,该垂直距离可以为18mm,16mm,14mm,12mm,10mm,9mm,8mm,7mm,6mm,5mm,4mm,3mm,2mm,1mm。优选的,该垂直距离L3小于等于5mm,使得排气更快速、更彻底。可以理解的,这里的垂直距离小于等于20mm应该为绝对值距离。即出水口441的最高端位于第一出水阀612的单向阀门615和阀体617的接触面615的上方或者下方。具体的,如图28所示意,出水口441的最高端可以设计为位于所述接触面的下方。出水口441的最高端与所述接触面之间的距离为3mm。当然在其他实施方式中,出水口441的最高端也可设计为与所述接触面大致位于同一高度。
更具体的,结合图25和28,在上下方向上,出水口441的最底端设计为与泵体46的中剖面R相平齐或者出水口441的最底端位于中剖面R的上方。这样的话,靠上设计的出水口441位置更便于中央腔室41内气体的排出。
此外,柱塞5处于第二状态时(见图7和图24),为了使得吸入上泵盖462内的水更容易向外流出。在本公开实施例中,第一出水阀612竖向布置。具体的,清洗液体可操作地挤压单向阀门615,并促使单向阀门615在阀体内移动,单向阀门615移动的方向与柱塞5相平行。如此设置,当吸入上泵盖462内的清洗液体被挤压向外流出时,清洗液体中混入的气体容易被排出。 可以理解的,在本实施方式中,第二出水阀622的单向阀门移动的方向也与柱塞5相平行。即第二出水阀622也竖向布置。
更进一步的,为了使得外界水源更容易流入进水腔内。在本公开实施例中,第一进水阀611竖向布置。具体的,清洗液体可操作地挤压单向阀门613,并促使单向阀门在阀体610内移动,单向阀门613移动的方向与柱塞5相平行。可以理解的,在本实施方式中,第二进水阀621的单向阀门移动的方向也与柱塞5相平行。即第二进水阀621也竖向布置。
柱塞5的行程和直径以及往复运动的往复次数决定了泵的流量。为了详细说明泵4的参数之间的关系,针对本实施例,定义柱塞直径为D(单位mm),柱塞的行程为S(单位mm),柱塞运动的往复频率是n(rpm),泵的流量为B(单位L/min)。那么,B=D×S×n×k,k代表系数(常数)。因此,当柱塞的往复运动频率恒定时(驱动电机的转速恒定时),为了实现预定的排放流量B(L/min),需要增加直径D但减小行程S,或者减少直径D但增加行程S。
但是,柱塞的直径越大导致泵4的宽度变大,柱塞的行程越大导致泵4长度变长,在满足预设流量B的前提下,如何设置柱塞的直径D和行程S决定了到泵4的体积,直接影响手持式高压清洗机1的便携性。而且,当直径增加时,柱塞5的推出的面积增加,所需要的推力也相应增加,为了增加推力,电动马达就需要更大的功率(更大体积的马达),并且,接收反作用力的泵体必须被强化。以这种方式,手持式高压清洗机1的宽度变大,并且不利的增加了成本。另一方面,当行程S增加,柱塞5的运动量增加,导致泵4在长度方向上增加,而且泵的往复运动频率不变的情况下,行程S增加,其柱塞的运动速度也是增加的,需要使用具有更高耐磨性的材料,其导致了成本的增加。
本实施例中,为了使手持式高压清洗机喷出的压力在一定范围内变化,设置电机的转速是可调的,也就是说泵的往复运动的频率n在一定范围内变化。具体的,当往复运动的频率n增加时,推动量减小,柱塞的直径需要减小,若不增加柱塞长度,柱塞的尺寸相应减小,泵的流量B减小。另一方面,当往复运动的频率n减小时,推动量增加,从而柱塞5的尺寸不利的增加,由于频率减小,泵的流量相应减小,并且过低的频率是震荡产生的原因,因 此太小的往复运动频率是不合适的。另一方面,对于参数一定的泵,其排出流量并不是随着往复运动频率n的增加而增加,而是在低于一定运动频率时随着运动频率的增加而增加,当高于一定运动频率排出流量不仅没有显著增加反而会随着往复运动频率n的增加而减小。这是因为,泵在一个往复运动周期内,需要一定的吸水时间,也就是说泵有一定的自吸时间,往复运动的周期要预留自吸时间,泵在吸水时才能有效利用空腔的容积,若周期太短,吸水时间不够,泵的空腔还没有吸满水就开始排水,导致流量降低。
因此,需要考虑泵的尺寸、成本和排出流量B(L/min)等适当的设置柱塞的直径D(mm)、行程S(mm)和往复运动的频率n(rpm)。发明人通过实验获得能最小化体积和成本的同时使泵的排出流量和压力能满足家庭用清洁需求的泵的尺寸参数。定义泵的流量与泵的体积之比为泵的流量体积比,该参数反映了泵的泵水能力和泵的体积之间的关系,本领域技术人员都希望泵的流量越大越好,这样清洁能力强,同时又希望泵的体积越小越好,这样高压清洗机更加便携,所以流量体积比这个参数越大越有利。发明人通过实验得出,柱塞5的行程范围是3-16mm,柱塞的直径范围是6-16mm,出于对泵的机械强度和装配的考虑柱塞的长度可选的范围是45-100mm,因此泵的体积的取值范围是63000mm^3-85000mm^3,流量体积比的范围是1.4-1.9之间。本实施例中,柱塞5的长度为58mm,柱塞5的行程是5.4mm,柱塞5的直径是12mm,获得最大的流量体积比1.9。其他可选的实施例中,柱塞5的长度也可选择54mm,60mm,62mm,68mm,90mm,柱塞的行程4mm,6mm,8mm,10mm,12mm,14mm,柱塞的直径8mm,10mm,14mm,16mm。
如前所述,为了使手持式高压清洗机1更加小巧便携,必须要特别考虑功能部件20在外壳内的排布。而手持式高压清洗机1体积是否小巧主要由长度、宽度、高度来决定。
其中,手持式高压清洗机1的宽度主要由功能部件20的配置及排布决定。
本公开实施例中,泵4的长度l大于泵4的宽度w,具体的,泵4的长度l约为80mm,泵4的宽度w约为50mm。外壳10包括至少部分包裹于泵4外围的泵壳体17。为了抑制手持式高压清洗机1宽度的最大化,以泵壳体17在左右方向上的宽度w1与手柄106在左右方向上的宽度w2的比值不大 于3的方式将泵4设置在外壳10内。具体的,在本实施方式中,泵壳体10在左右方向上的宽度w1与手柄106在左右方向上的宽度w2的比值约为1.3~1.8。除了采用了体积较小的单柱塞泵4外,本公开实施例还将单柱塞泵4竖向布置在外壳10中。具体的,以柱塞5的长度延伸方向与中分面T相平行的方式将泵4排布在外壳10内,此时,在左右方向上,上泵盖462和下泵盖463均延伸越过外壳10的中分面T。进一步的,电机2配置为高速小电机。具体的,电机2的空载转速大于等于10000rpm,电机2的电机轴在前后方向上延伸,泵4设置在电机2的前方。传动机构3包括与高速电机2传动连接的减速机构。在泵4及其配套的旋转-往复转换结构的输入转速范围一定的情况下,相比直接采用输出转速在该输入转速范围内的低转速电机,采用减速机构和高转速电机的合理配合能够显著降低电机和传动机构的整体重量和体积。减速机构的空载输出转速小于等于3000rpm或2500rpm或2200rpm或2000rpm。减速机构的减速比在12:1至3:1之间,如约10:1、8:1、7:1、6:1、5:1、4:1等。相较直接使用低转速电机,本实施例的电机2的在左右方向上的宽度有效的减小了,且电机2的体积和重量都能够降低至一半以下,提高了手持式高压清洗机1的便携性。在本公开实施例中,如图29所示,传动外壳30的一半与泵体46一体成型。
手持式高压清洗机1的长度也主要由功能部件20的配置及排布决定。
在本公开实施中,泵4的长度l大于泵的高度h,将泵4竖向布置在外壳10中,(即在上下方向上,上泵盖462分布在下泵盖463上端的方式将泵4布置在外壳中),以使得功能部件20在前后方向上的长度不大于200mm。
进一步的,在本公开实施例中,如图5~7和图23、图31所示,传动机构3包括与电机连接的偏心机构7。在垂直柱塞5长度方向的侧部,柱塞5具有用于安装偏心机构7的安装部50。在本实施例中,安装部50为向内凹陷的凹腔。并且安装部50位于柱塞5的中心位置。偏心机构7通过安装轴承71固定在安装部50内。固定安装的形式并不限于通过安装轴承71,也可以包括扁方配合、花键配合等常见方式,当然,本领域技术人员可以想到的是偏心机构7也可以与柱塞5一体成型。偏心机构7包括偏心轴72和连接偏心轴72的转轴33。在本实施例中,偏心轴72与转轴33固定连接,连接的方 式可以是一体成型。转轴33的中心和偏心轴72的中心相对偏心设置。转轴33上设有起支撑转轴33作用的支撑轴承34。从图6可以看出,转轴33的中心与偏心轴72的中心之间的偏心距为d。传动机构3带动转轴33围绕转轴33的中心转动,而偏心轴72通过安装部50和安装轴承71带动柱塞5围绕偏心轴72的中心转动。由于转轴33与偏心轴72之间具有偏心距d,因此柱塞5相对转轴33作偏心旋转运动。偏心机构7至少部分位于泵体46内。即在前后方向上,偏心机构7与泵4只是部分重叠。这样的设计,使得手持式高压清洗机1在前后方向上的长度进一步缩短,整机的体积更加小巧。本公开实施例中,通过单柱塞泵4竖向布置的外壳10内,偏心机构7的偏心轴72安装在柱塞5的中央,使得功能部件20在前后方向上的长度最短化。具体的,功能部件20在前后方向上的长度不大于150mm,从而整机在前后方向上的长度最短。
如图6所示,在其中一种实施方式中,减速机构为齿轮传动。减速机构包括连接在电机轴21上的小齿轮31、与小齿轮31啮合的大齿轮32。大齿轮32与转轴33固定连接。在本实施例中,转轴33与电机轴21平行设置。通过大齿轮32和小齿轮31的啮合传动作用,电机轴21带动转轴33围绕其中心转动。由于偏心轴72与转轴33固定连接,因此偏心轴72也围绕转轴33的中心转动,因此偏心轴72带动柱塞5围绕转轴33的中心转动。因此电机2能够带动柱塞5作偏心运动。在该实施例中,电机2是通过一级的齿轮传动带动柱塞5运动。
在如图10所示的另外一种实施例中,减速机构包括分别连接在电机轴21上的第一锥齿轮351和转轴33上的第二锥齿轮352。第一锥齿轮351和第二锥齿轮352相互啮合传动。电机轴21和转轴33垂直设置。而柱塞5同样安装部50用于与相对与转轴33偏心设置的偏心轴72固定连接。通过第一锥齿轮351和第二锥齿轮352的配合,电机2带动柱塞5作偏心运动。在该实施例中,电机2是通过一级的锥齿轮传动带动柱塞5运动。
在如图11所示的另外一种实施例中,电机2是通过多级的齿轮传动带动柱塞5运动。在该实施例中,减速机构包括中间轴36以及传动连接中间轴36的转轴33。中间轴36与电机轴21平行设置。中间轴36与电机轴21之间 通过一级齿轮361传动连接。转轴33并不直接与电机轴21连接。转轴33与中间轴36之间通过二级齿轮362传动连接。转轴33另一方面与柱塞5采用如前述几个实施例类似的偏心连接。转轴33与中间轴36平行设置。采用该种结构的优势是可以改变一级和二级齿轮之间的传动比,从而调节柱塞5的转动输出。
在如图12和32所示的另外一种实施例中,减速机构为行星齿轮减速机构302。具体的,行星齿轮减速机构包括恒星轮320,行星轮322和324,和内齿轮321,恒星轮320固定设置于电机轴上,行星轮322和324包括两个大小相同的齿轮,行星轮322和324分别与恒星轮320和内齿轮321啮合,与偏心机构7固定连接。当电机轴旋转时,带动行星轮322围绕内齿轮321作圆周运动。从而带动偏心机构7作旋转运动。本实施例中,采用行星齿轮减速,其恒星轮与电机轴固定设置,减速比一定的情况下,能够将减速机构的体积最小化,从而使手持式高压清洗机1更加小巧便携。
以上实施例中,柱塞5都是与偏心机构7连接,通过偏心机构7的偏心旋转运动带动柱塞5沿其长度方向上直线往复运动。当然,本发明并不限于柱塞5与偏心机构7连接,柱塞5还可以与其他机构连接来实现沿其长度方向上的直线往复运动。如图13和图14所示的实施例中,柱塞5与曲柄连杆机构8相连接。曲柄连杆机构8包括相互连接的连杆81和曲柄82。连杆81的一端连接曲柄82,而连杆81的另一端连接柱塞5。而曲柄82的一端连接连杆81,曲柄82的另一端连接于传动机构3。连杆81与曲柄82的连接处构成枢转点83,使得连杆81与曲柄82能够围绕枢转点83相对转动。如图13和图14所示,该曲柄连杆机构8能够将传动机构3的旋转运动转化为柱塞5在其长度方向上的往复运动。图13展示了在曲柄连杆机构8的作用下,柱塞5处于第一状态;而图14展示了柱塞5处于第二状态。
如图16所示的侧面示意图,传动机构3包括与电机轴21传动连接的传动轴38。传动轴38通过齿轮啮合传动连接电机轴21。传动轴38与电机轴21平行设置。传动轴38上设有支撑轴承34。传动轴38沿其轴线延伸方向上与主动轮51连接。电机2转动带动传动轴38转动,而传动轴38带动主动轮51和从动轮52转动。在主动轮51和从动轮52转动过程中,水可以第一腔 室53移动至第二腔室54。采用该种机构,传动机构3可以与泵4一体设置,从而进一步减小整体的体积尺寸。
在图15至图16所示的实施例中,泵4具有连接传动机构3的主动轮51和啮合主动轮51的从动轮52。泵4还包括分别设置在主动轮51对应两侧的第一腔室53和第二腔室54。第一腔室53与第二腔室54被主动轮51和从动轮52隔离。第一腔室53连接有进水口431,第二腔室54连接有出水口441。主动轮51或从动轮52的齿轮之间的空隙形成容纳水的运输腔55。如图15所示,主动轮51的旋转方向为顺时针方向,从动轮52的旋转方向相应为逆时针方向。随着主动轮51的旋转,运输腔55与第一腔室53连通,第一腔室53中的水进入运输腔55中,并向第二腔室54移动。在主动轮51的旋转过程中,泵4的壳体内壁48对运输腔55有密封作用,因此不会造成运输腔55内的水向外泄漏。当主动轮51旋转至运输腔55与第二腔室54连通的位置时,运输腔55内的水就移动进入第二腔室54中,并最终从出水口441向外排出。为了增加输送效率,第一腔室53中的水还可以进入至从动轮52的运输腔55中。经从动轮52运输至第二腔室54中。采用该种类型的泵的好处是整体结构更加紧凑。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。

Claims (30)

  1. 一种手持式高压清洗机,其包括:
    外壳,包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;
    功能部件,所述功能部件包括设置在所述外壳内的电机、由所述电机驱动的泵以及传动机构;
    所述泵由所述电机带动向外输送清洗液体,所述泵包括泵体、收容在所述泵体内的柱塞、设置在所述泵体上的进水口和出水口以及中央腔室,所述柱塞运动带动清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;
    所述传动机构连接所述柱塞,所述电机通过所述传动机构带动所述柱塞往复运动;
    其特征在于,所述柱塞的数量仅有一个,所述泵还包括可拆卸的安装在所述泵体上的上泵盖和下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动。
  2. 根据权利要求1所述的手持式高压清洗机,其特征在于,以所述功能部件在前后方向上的长度不大于200mm,将所述上泵盖分布在所述下泵盖上端的排布方式使得所述泵配置在所述外壳中。
  3. 根据权利要求2所述的手持式高压清洗机,其特征在于,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述柱塞的长度延伸方向与所述中分面相平行。
  4. 根据权利要求2所述的手持式高压清洗机,其特征在于,所述传动机构包括与所述电机连接的偏心机构,所述柱塞的中部向内凹陷形成有安装部,所述偏心机构与所述安装部连接并在所述电机的驱动下,带动所述柱塞在所述泵体内作往复运动。
  5. 根据权利要求1所述的手持式高压清洗机,其特征在于,所述出水口的开口方向与所述柱塞的往复运动方向大致垂直,且所述出水口位于所述柱 塞的前方。
  6. 根据权利要求1所述的手持式高压清洗机,其特征在于,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述出口之间,且所述出水口的开口方向与所述出口的开口方向一致。
  7. 根据权利要求3所述的手持式高压清洗机,其特征在于,所述出水口和所述进水口排布在所述柱塞的同侧,且在左右方向上,所述出水口的轴心位于所述中分面上或者自所述中分面向左或向右偏离的尺寸范围不大于所述泵体宽度的30%。
  8. 根据权利要求1所述的手持式高压清洗机,其特征在于,所述泵还包括与所述进水口连通的进水腔、与所述出水口连通的出水腔以及单向阀单元,所述单向阀单元用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央腔室单向流出至所述出水腔中,至少所述进水腔或者至少所述出水腔位于所述柱塞的前方。
  9. 根据权利要求8所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔均设置在所述柱塞的前方,且所述进水腔和所述出水腔在左右方向上相邻布置。
  10. 根据权利要求8所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔的延伸方向与所述柱塞的往复运动方向相平行,所述出水口和所述进水口均设置在所述进水腔和所述出水腔的前方,且所述出水口、所述进水口的开口方向与所述出水腔、进水腔的延伸方向相垂直。
  11. 根据权利要求1所述的手持式高压清洗机,其特征在于,所述手持式高压清洗机还包括为所述电机供电的电池包,所述功能部件位于所述手柄的一端,所述电池包位于所述手柄的另一端。
  12. 根据权利要求11所述的手持式高压清洗机,其特征在于,所述功能部件设置在所述主体部内,所述主体部大致沿清洗液体的喷射方向延伸,以所述手持式高压清洗机的重心G位于所述手柄的前端点和后端点之间的方式,将所述手柄配置成所述手柄的延伸方向和所述主体部的延伸方向形成的夹角大于90度,且小于等于160度。
  13. 根据权利要求12所述的手持式高压清洗机,其特征在于,所述手持式高压清洗机的出液部设有附件附接部,该附件附接部被配置为允许与喷头可拆卸地连接,所述喷头包括一定长度的喷杆及连接在喷杆一端的喷嘴,将所述手柄前端点向前的元件定义为喷枪组件,将所述手柄后端点向后和向下的元件定义为电源组件,所述喷枪组件的重量大于所述电源组件的重量。
  14. 一种手持式高压清洗机,其包括:
    外壳,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述外壳包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;
    功能部件,所述功能部件包括设置在所述外壳内的电机、由所述电机驱动的泵以及传动机构;
    其特征在于,所述泵包括泵体、设置在所述泵体内的单个柱塞、设置在所述泵体上的进水口和出水口以及中央腔室,所述柱塞运动带动所述清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;
    所述传动机构连接所述柱塞,并可操作地带动所述柱塞在其长度延伸方向上作往复运动;
    所述外壳包括至少部分包裹于所述泵的外围的泵壳体,以所述泵壳体在左右方向上的宽度与所述手柄在左右方向上的宽度的比值不大于3的方式将所述泵设置在所述外壳内。
  15. 根据权利要求14所述的手持式高压清洗机,其特征在于,所述泵包括设置在所述柱塞一端的上泵盖及设置在所述柱塞另一端的下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动,在左右方向上,所述上、下泵盖均延伸越过所述中分面。
  16. 根据权利要求14所述的手持式高压清洗机,其特征在于,以所述柱塞的长度延伸方向与所述中分面相平行的方式将所述泵配置在所述外壳内。
  17. 根据权利要求14所述的手持式高压清洗机,其特征在于,所述泵还包括与所述进水口连通的进水腔、与所述出水口连通的出水腔以及单向阀单 元,所述单向阀单元用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央腔室单向流出至所述出水腔中,所述进水腔和所述出水腔相邻布置在所述柱塞的同侧。
  18. 根据权利要求17所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔在上下方向上贯穿于所述泵体,且所述进水腔和所述出水腔均设置在所述柱塞的前方。
  19. 根据权利要求17所述的手持式高压清洗机,其特征在于,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述出口之间,且所述出水口的开口方向与所述出口的开口方向一致。
  20. 根据权利要求14所述的手持式高压清洗机,其特征在于,所述出水口和所述进水口并排排布在所述柱塞的同侧,且在左右方向上,所述出水口的轴心位于所述中分面上或者自所述中分面向左或向右偏离的尺寸范围不大于所述泵体宽度的30%。
  21. 一种手持式高压清洗机,其包括:
    外壳,包括用于握持的手柄、与所述手柄角度设置的主体部、及供清洗液体向外喷出的出液部;
    电机,设置在所述外壳内,为所述手持式高压清洗机作业提供驱动力;
    泵,由所述电机带动向外输送清洗液体,所述泵包括泵体、收容在所述泵体内的柱塞、设置在所述泵体上的进水口和出水口、与所述进水口连通的进水腔,与所述出水口连通的出水腔以及中央腔室,所述柱塞运动带动所述清洗液体通过所述进水口流至中央腔室内,并自所述出水口向所述出液部流出;
    传动机构,连接所述柱塞,所述柱塞通过所述传动机构受到所述电机的驱动;
    单向阀单元,用于控制清洗液体自所述进水腔单向流入至所述中央腔室中,或者控制清洗液体自所述中央腔室单向流出至所述出水腔中;
    其特征在于,所述单向阀单元包括设置在所述出水腔上的第一出水阀,所 述第一出水阀包括阀体、位于所述阀体内的单向阀门和偏压所述单向阀门的偏压件,清洗液体可操作地挤压所述单向阀门,并促使所述单向阀门在所述阀体内移动,所述单向阀门和所述阀体的接触面与所述出水口的最高端之间的垂直距离小于等于20mm。
  22. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述第一出水阀的单向阀门和所述阀体的接触面与所述出水口的最高端之间的垂直距离小于等于5mm。
  23. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述第一出水阀的单向阀门移动的方向与所述柱塞相平行,在所述单向阀门移动的方向上,所述出水口的最高端位于所述单向阀门和所述阀体的接触面的下方或者所述出水口的最高端与所述单向阀门和所述阀体的接触面大致位于同一高度。
  24. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述泵还包括收容所述柱塞的柱塞孔,所述柱塞孔在上下方向上延伸,定义穿过所述柱塞孔长度的一半,且与所述柱塞的往复运动方向相垂直的面为泵在前后方向上的中剖面R,在上下方向上,所述出水口的最底端与所述中剖面R相平齐,或者所述出水口的最底端位于所述中剖面R的上方。
  25. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述外壳具有一中分面及关于所述中分面大致对称设置的第一半壳和第二半壳,所述柱塞的长度延伸方向与所述中分面相平行。
  26. 根据权利要求25所述的手持式高压清洗机,其特征在于,所述泵包括设置在所述柱塞一端的上泵盖及设置在所述柱塞另一端的下泵盖,所述中央腔室包括形成在所述上泵盖内的上空腔、及形成在所述下泵盖内的下空腔,所述传动机构带动所述柱塞的两端分别在所述上空腔和下空腔内作往复运动,在左右方向上,所述上、下泵盖均延伸越过所述中分面。
  27. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述出液部具有供所述清洗液体向外流出的出口,在前后方向上,所述出水口位于所述柱塞和所述开口之间,且所述出水口的开口方向与所述出口的开口方向一 致。
  28. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔均设置在所述柱塞的前方,且所述进水腔和所述出水腔在左右方向上相邻布置。
  29. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔的延伸方向与所述柱塞的往复运动方向相平行,所述出水口和所述进水口均设置在所述进水腔和所述出水腔的前方,且所述出水口、所述进水口的开口方向与所述出水腔、进水腔的延伸方向相垂直。
  30. 根据权利要求21所述的手持式高压清洗机,其特征在于,所述进水腔和所述出水腔在上下方向上贯穿于所述泵体,所述单向阀单元还包括第二出水阀,所述第一出水阀设置在所述出水腔的上端,所述第二出水阀设置在所述出水腔的下端。
PCT/CN2018/104424 2018-09-06 2018-09-06 手持式高压清洗机 WO2020047804A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019522706A JP6899432B2 (ja) 2018-09-06 2018-09-06 手持ち式高圧洗浄機
PCT/CN2018/104424 WO2020047804A1 (zh) 2018-09-06 2018-09-06 手持式高压清洗机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/104424 WO2020047804A1 (zh) 2018-09-06 2018-09-06 手持式高压清洗机

Publications (1)

Publication Number Publication Date
WO2020047804A1 true WO2020047804A1 (zh) 2020-03-12

Family

ID=69722073

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/104424 WO2020047804A1 (zh) 2018-09-06 2018-09-06 手持式高压清洗机

Country Status (2)

Country Link
JP (1) JP6899432B2 (zh)
WO (1) WO2020047804A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4160014A1 (en) * 2021-09-29 2023-04-05 Graco Minnesota Inc. Pump drive system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060228230A1 (en) * 2003-08-18 2006-10-12 Stanislaw Bodzak Liquid pump
CN103775301A (zh) * 2014-02-24 2014-05-07 余文凌 手提式冲洗泵
CN107061213A (zh) * 2015-11-20 2017-08-18 苏州宝时得电动工具有限公司 泵单元及手持式高压清洗机
CN107486426A (zh) * 2016-06-13 2017-12-19 苏州宝时得电动工具有限公司 手持式压力清洗机
CN108087226A (zh) * 2016-11-21 2018-05-29 苏州宝时得电动工具有限公司 泵单元及手持式高压清洗机
CN108160366A (zh) * 2016-12-06 2018-06-15 苏州宝时得电动工具有限公司 手持式高压清洗机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1707150A (zh) * 2005-05-10 2005-12-14 赵宏武 直流重型黄油枪

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060228230A1 (en) * 2003-08-18 2006-10-12 Stanislaw Bodzak Liquid pump
CN103775301A (zh) * 2014-02-24 2014-05-07 余文凌 手提式冲洗泵
CN107061213A (zh) * 2015-11-20 2017-08-18 苏州宝时得电动工具有限公司 泵单元及手持式高压清洗机
CN107486426A (zh) * 2016-06-13 2017-12-19 苏州宝时得电动工具有限公司 手持式压力清洗机
CN108087226A (zh) * 2016-11-21 2018-05-29 苏州宝时得电动工具有限公司 泵单元及手持式高压清洗机
CN108160366A (zh) * 2016-12-06 2018-06-15 苏州宝时得电动工具有限公司 手持式高压清洗机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4160014A1 (en) * 2021-09-29 2023-04-05 Graco Minnesota Inc. Pump drive system

Also Published As

Publication number Publication date
JP2020534990A (ja) 2020-12-03
JP6899432B2 (ja) 2021-07-07

Similar Documents

Publication Publication Date Title
US11708822B2 (en) Handheld high-pressure cleaning machine
CN208230165U (zh) 手持式高压清洗机
WO2018103669A1 (zh) 高压清洗机及高压清洗机组件
CN108533471A (zh) 手持式高压清洗机
CN104114294B (zh) 高压清洗设备
CN108433654B (zh) 一种水箱以及具有其的清洁装置
CN108087226A (zh) 泵单元及手持式高压清洗机
WO2020047804A1 (zh) 手持式高压清洗机
US20030201340A1 (en) Fluid sprayer with a motor-driven pump
WO2020191787A1 (zh) 一种手持自吸式高压清洗机
WO2015019620A1 (en) Washer
CN109675737A (zh) 手持式高压清洗机
CN107440317A (zh) 多功能清洁枪
CN210788332U (zh) 压力清洗机及其泵
CN210178526U (zh) 一种手持自吸式高压清洗机
CN212576998U (zh) 高压清洗机
JP2014066197A (ja) 洗浄機
WO2019076349A1 (zh) 手持式高压清洗机
CN207546814U (zh) 手持式高压清洗机
CN214196572U (zh) 一种用于手持高压清洗机的双柱塞泵结构
WO2020011153A1 (zh) 手持式高压清洗机
CN212261582U (zh) 便携式洗牙器
CN214330824U (zh) 手持式高压清洗机泵
CN211359788U (zh) 高压清洗设备
WO2023001310A1 (zh) 便携式清洗设备

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2019522706

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18932620

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18932620

Country of ref document: EP

Kind code of ref document: A1