WO2021098781A1 - 喷枪 - Google Patents

喷枪 Download PDF

Info

Publication number
WO2021098781A1
WO2021098781A1 PCT/CN2020/130133 CN2020130133W WO2021098781A1 WO 2021098781 A1 WO2021098781 A1 WO 2021098781A1 CN 2020130133 W CN2020130133 W CN 2020130133W WO 2021098781 A1 WO2021098781 A1 WO 2021098781A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
spray gun
brushless motor
fan module
housing
Prior art date
Application number
PCT/CN2020/130133
Other languages
English (en)
French (fr)
Inventor
孙益民
张士松
钟红风
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 EP20890942.4A priority Critical patent/EP4063019A4/en
Publication of WO2021098781A1 publication Critical patent/WO2021098781A1/zh
Priority to US17/747,206 priority patent/US20220274123A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2429—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together after discharge
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2424—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together downstream of the container before discharge
    • B05B7/2427—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together downstream of the container before discharge and a secondary stream of atomising fluid being brought together in the container or putting the carried liquid under pressure in the container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal

Definitions

  • This application relates to the field of handheld spraying equipment, and in particular to a spray gun.
  • paint spraying for workpieces such as walls and ceilings has always been the part of which the workload and construction skills are relatively large. Therefore, as the core component of the implementation of paint spraying, the paint spraying device has always been the focus of attention and improvement in the industry, and the paint spraying device is a typical paint spraying device.
  • the HVLP type paint spray gun blows the wind from the air duct through a centrifugal fan, and sprays the paint at the nozzle through the Venturi principle.
  • the current HVLP type paints all use DC low-speed brushed motors, which are large in size and heavy, and bring high work intensity to users.
  • the speed of DC brushed motors is low.
  • the fan In order to increase the air intake, the fan must With a large enough fan diameter, the tail of the spray gun is bulky, and the weight is concentrated on the tail, which makes it difficult for users to hold it.
  • the technical problem to be solved by the present invention is to provide a spray gun, which can reduce the weight of the whole machine and rationalize the layout of the whole machine, thereby reducing the burden of the user's holding and improving the user's control experience.
  • a spray gun comprising: a first housing; a fan module housed in the first housing for generating an atomized airflow; and the fan module includes a A brush motor and a fan driven to rotate by the brushless motor; a sleeve formed or installed on the first housing; a nozzle assembly provided at one end of the sleeve away from the fan module, the The nozzle assembly has a liquid outlet; the spray bar assembly is housed in the sleeve; the spray bar assembly is configured to move along its longitudinal axis to open or close the liquid outlet; wherein the maximum outer diameter of the fan module The diameter D1 is between 30mm and 80mm, and the motor axis of the brushless motor is parallel to or coincident with the longitudinal axis of the spray rod assembly.
  • the motor axis of the brushless motor is arranged to coincide with the longitudinal axis of the spray rod assembly.
  • the rotation axis of the brushless motor and the longitudinal axis of the boom assembly are arranged in parallel, and the distance L1 between the two satisfies: ( D1-45)/2+2.5mm ⁇ L1 ⁇ 20mm.
  • the spray gun includes a handle for the operator to hold, and along a direction perpendicular to the longitudinal axis, the motor axis of the brushless motor is farther from the handle than the longitudinal axis of the spray rod assembly .
  • the spray gun further includes a wind pressure chamber radially supported in the first housing, and the fan module is housed in the wind pressure chamber.
  • the fan module further includes a fan housing, and in the direction of movement of the airflow, the fan and the brushless motor are sequentially arranged in the fan housing;
  • the machine housing is formed with an air inlet ring cover and an air outlet; the fan rotates, and the air flow enters the fan housing from the air inlet ring cover, and flows out from the air outlet to the wind pressure chamber.
  • the fan module is supported in the wind pressure chamber through a shock-absorbing structure, so that the vibration caused by the high-speed motor is transmitted to the first housing after being attenuated by the shock-absorbing structure. Reduce the user's grip shock.
  • the fan is rotatably arranged in the air inlet ring cover, and the outer diameter of the air inlet ring cover corresponding to the axial position of the fan blades of the fan is the fan mold The maximum outer diameter of the group D1.
  • the fan module further includes a circuit board for controlling the operation of the brushless motor, the circuit board is fixedly connected to the fan housing, and is arranged on the brushless motor. Downstream in the direction of the airflow.
  • the outer diameter of the fan housing corresponding to the axial position of the circuit board is D2, where D2 ⁇ D1.
  • the value range of D2 is between 40mm-55mm.
  • the rated power of the brushless motor is between 250W and 500W, and the speed range is between 60,000 and 120,000 rpm.
  • the fan module adopts a high-speed brushless motor with a power range of 250-500W and a speed range of 60,000-120,000 rpm, so that the volume of the fan module can be reduced under the same working capacity.
  • the weight of the whole machine is reduced, and the load when the user holds the spray gun is reduced; and, as the structural size of the fan module is greatly reduced, the longitudinal axis of the spray rod assembly can be set parallel or coincident with the rotation axis of the motor. As a result, the whole machine is more compact and more ergonomic.
  • Fig. 1 is a schematic diagram of a spray gun provided by the first embodiment of the present application
  • Figure 2 is a cross-sectional view of the spray gun shown in Figure 1;
  • Fig. 3a is an exploded view of the fan module in the spray gun shown in Fig. 1;
  • Fig. 3b is a schematic diagram of the fan module shown in Fig. 3a from another perspective;
  • FIG. 4 is a cross-sectional view of the spray gun provided by the second embodiment of the present application.
  • FIG. 5 is a cross-sectional view of the spray gun provided by the third embodiment of the present application.
  • FIG. 6 is a cross-sectional view of the spray gun provided by the fourth embodiment of the present application.
  • Figure 7 is a cross-sectional view of a spray gun provided by a fifth embodiment of the present application.
  • Fig. 8 is a schematic diagram of the structure of the brushless motor rotor in the spray gun of the present application.
  • the first embodiment of the present application provides a spray gun 100, which can be used for spraying paint, spraying water (for example, watering flowers), and so on.
  • the spray gun 100 is a painting equipment, such as a paint spray gun.
  • the spray gun 100 uses the Venturi principle to atomize and spray the paint supplied to the nozzle through a high-speed airflow.
  • the spray gun 100 mainly includes a power component, a working head component, a liquid reservoir, and a DC power supply.
  • the power assembly includes a first housing 10 and a fan module 20.
  • the fan module 20 is housed in the first housing 10 for generating air flow.
  • the fan module 20 includes a brushless motor 202 and a fan 204 driven to rotate by the brushless motor 202.
  • the brushless motor 202 of this embodiment has a rotating shaft 201 and a motor body 203.
  • the motor rotor is installed on the rotating shaft 201, partially extends out of the motor body 203 and is sleeved by the fan 204.
  • the motor rotor 205 includes a two-pole magnetic tile or a four-pole magnetic tile fixedly arranged on the rotating shaft 201.
  • the motor body 203 includes a stator, and the thickness of the laminated stator core is 0.2 mm.
  • the fan 204 is a centrifugal fan.
  • the first housing 10 is also formed with a handle 12 for the operator to hold.
  • a power switch 13 electrically connected to the brushless motor 202 may be provided inside the handle 12.
  • the power switch 13 can be matched with the switch trigger 38. When the switch trigger 38 is moved by the user, it contacts and pushes the power switch 13 to close, so as to realize the activation of the spray gun 100.
  • the lower end of the handle 12 is provided with a mounting part for connecting with a DC power supply.
  • the DC power source is a universal battery pack 14 for electric tools.
  • the handle 12 can also be connected to the first housing 10 in a separable manner.
  • the working head assembly includes a sleeve 30, a nozzle assembly 32 and a spray bar assembly 34.
  • the sleeve 30 is connected to the aforementioned first housing 10, and is formed with a pot cover for connecting the liquid storage pot 36 and a nozzle mounting part.
  • the nozzle assembly 32 is connected to the sleeve 30 through the nozzle mounting portion, and is disposed at an end of the sleeve 30 away from the fan module 20.
  • the nozzle assembly 32 includes a nozzle and a nozzle adjusting member. Wherein, the nozzle has a liquid outlet, and the nozzle adjusting member is used for the user to operate to adjust the shape of the liquid to be sprayed.
  • the spray rod assembly 34 is housed in the sleeve 30 and is configured to be able to move relative to the nozzle assembly 32 along its longitudinal axis X1 to open or close the liquid outlet.
  • the aforementioned switch trigger 38 is pivoted on the sleeve 30. The user controls the switch trigger 38 to move, thereby driving the spray rod assembly 34 to move to open the liquid outlet, thereby spraying paint from the spray gun 100.
  • the sleeve 30 may be directly formed on the first housing 10.
  • the liquid reservoir 36 is provided with the fluid desired to be sprayed by the spray gun 100, for example, the liquid reservoir 36 is filled with paint supplied to the nozzle assembly 32.
  • the mounting part is connected to the battery pack 14, the end of the battery pack 14 and the bottom surface of the liquid reservoir 36 extend in the same plane. As a result, the battery pack 14 and the liquid storage pot 36 jointly form a leg, so that the spray gun 100 can be firmly placed.
  • the power assembly further includes a wind pressure chamber 16 radially supported in the first housing 10, and the aforementioned fan module 20 is contained in the wind pressure chamber 16.
  • the wind pressure chamber 16 and the sleeve 30 are connected by a separable connecting piece, and the two together form a closed space for air movement.
  • the airflow generated by the fan module 20 is completely provided to the sleeve 30 under the guidance of the wind pressure chamber 16.
  • the wind pressure chamber 16 includes its own shell and an internal space defined by the shell.
  • the wind pressure chamber 16 is connected to the first housing 10 in a snap-fit manner.
  • An air passage communicating with the wind pressure chamber 16 is formed between the inner wall of the sleeve 30 and the outer surface of the spray rod assembly 34.
  • a part of the gas is sprayed out through the nozzle assembly 32, and the sprayed paint is atomized by the Venturi principle.
  • a negative pressure is formed at the mouth of the straw 35, which sucks the air in the straw 35, so that a negative pressure is formed inside the straw 35 connected to the liquid storage pot 36 ;
  • Another part of the gas enters the liquid storage pot 36 through a connecting structure, thereby causing a high pressure to be formed above the liquid surface of the liquid storage pot 36.
  • a gas pressure difference is formed between the inside and outside of the suction pipe 35, so that the paint is forced out of the liquid reservoir 36 through the suction pipe 35, and is finally supplied to the nozzle assembly 32.
  • the "front and rear" direction described in this application may be parallel to the direction of the air flow generated by the fan 204 as a whole.
  • the position where the nozzle assembly 32 is located is the front end, correspondingly, The fan module 20 is located behind the nozzle assembly 32.
  • the fan module 20 of the present invention further includes a fan housing 22 in which the aforementioned brushless motor 202 and fan 204 are housed.
  • the fan housing 22 is provided with an air inlet ring cover 220.
  • the air inlet ring cover 220 is located upstream of the brushless motor 202 in the airflow direction, and the aforementioned fan 204 is rotatably supported inside it.
  • the air inlet ring cover 220 is arranged close to the rear end of the air pressure chamber 16, and the rear end of the air inlet ring cover 220 is provided with an air guide 222 embedded in the rear end of the fan 204.
  • the airflow enters the fan housing 22 from the air guide opening 222 and is driven by the centrifugal fan 204 toward the inner wall of the air inlet ring cover 220 in the radial direction.
  • the fan housing 22 is also formed with an air outlet 224, after the air flows through the brushless motor 202, the air flows out of the fan housing 22 from the air outlet 224 and enters the air pressure chamber 16.
  • the fan module 20 integrates a bearing assembly for supporting the brushless motor 202 and the fan 204. Specifically, the rear end of the fan module 20 is provided with a rear bearing assembly for supporting the brushless motor 202 and the fan 204; the front end of the fan module 20 is provided with a front bearing assembly for supporting the brushless motor 202 and the fan 204. Therefore, before placing the brushless motor 202 and the fan 204 in the wind pressure chamber 16, the fan module 20 provides a good support for the brushless motor 202 and the fan 204.
  • the fan module 20 of this embodiment also integrates a circuit board 206 for controlling the operation of the brushless motor 202.
  • the circuit board 206 is fixedly connected to the fan housing 22, is received by the fan housing 22, and is located downstream of the brushless motor 202 in the direction of airflow movement.
  • the material inside the fan module 20 of the present invention is fully integrated and concentrated, thereby reducing and simplifying the assembly process and reducing the assembly cost.
  • the fan module 20 Before being installed in the air pressure chamber 16, the fan module 20 can be separately assembled as a component at the front station, which saves a lot of assembly procedures, greatly improves assembly efficiency, and reduces production costs.
  • the HVLP paint spray gun 100 realizes the atomization of liquid through high-speed airflow, and its working ability mainly depends on the air volume and pressure generated by the rotation of the fan 204.
  • the air volume and air pressure are positively related to the speed of the fan 204 and the radial size of the fan 204.
  • the mouth of the tiger abuts against the upper end of the handle, and the finger is used to press the switch trigger.
  • the size of the tail of the spray gun is large, especially when the spray gun is used for overhead spraying, the user's arm can easily interfere with the outer shell of the tail; and the center of gravity of the whole machine is concentrated on the tail, which is not convenient for the user to operate.
  • the tail housing containing the motor and the fan is often tilted up compared to the sleeve to avoid interference problems. That is, in the spray gun of the prior art, the rotation axis of the motor and the longitudinal axis of the spray rod assembly are arranged at an included angle.
  • the spray gun 100 uses a high-speed motor 202 as the driving source.
  • the rated power of the motor 202 is between 250W and 500W, and the motor speed is as high as 60000rpm-120000rpm, so that the radial size of the fan 204 can be Reduced; and the motor 202 is a brushless motor, which has a stronger energy density than a brushed motor, that is, the radial size of the motor 202 can also be reduced under the condition of meeting the same working capacity.
  • the power range of the brushless motor 202 is between 250W and 300W.
  • the outer diameter of the motor body is 32mm-45mm, and the radial dimension of the fan 204 is 38mm-55mm.
  • the structural size of the fan module is reduced, so that the weight of the spray gun 100 is reduced, that is, the load when the user holds the spray gun 100 is reduced, and the user experience is improved.
  • the overall size of the brushless motor 202 and the fan 204 is greatly reduced, so that the overall volume of the fan module 20 is greatly reduced, so that the installation flexibility of the fan module 20 in the air pressure chamber 16 is improved, and the It is possible that the longitudinal axis X1 of the spray rod assembly 34 and the rotation axis X2 of the brushless motor 202 are parallel or overlapped.
  • the maximum outer diameter size of the fan module 20 is defined as D1.
  • the outer diameter of the air inlet ring cover 220 corresponding to the axial position of the blade of the fan 204 is the maximum outer diameter D1 of the fan module 20.
  • Figures 1-2, 3a, and 3b show the first embodiment of the present invention.
  • the maximum outer diameter D1 of the fan module 20 is between 30-45 mm.
  • the size range is small, so that the longitudinal axis X1 of the spray bar assembly 34 and the rotation axis X2 of the brushless motor 202 can be arranged to coincide with each other. Therefore, the structure of the spray gun 100 is more compact, and the center of gravity is closer to the mouth area when the user holds it. It is convenient for users to manipulate.
  • FIG. 4 it is the second embodiment of the present invention.
  • the functional structure of the spray gun 100a provided in this embodiment is basically the same as that of the spray gun 100 provided in the first embodiment.
  • the difference is that the maximum outer diameter of the fan module 20a is larger than the maximum outer diameter of the fan module 20 of the first embodiment. Therefore, the layout of the fan module 20a is different.
  • the fan module 20a of this embodiment includes: a fan housing 22a, a fan 204a, and a brushless motor 202a.
  • the fan housing 22a is provided with an air inlet ring cover 220a and an air outlet 224a.
  • the air inlet ring cover 220a When the fan 204a rotates, the air flows from the air inlet ring cover 220a into the fan housing 22a, and flows out from the air outlet 224a into the air pressure chamber 16a.
  • the fan module 20a also integrates front and rear bearing assemblies for supporting the motor shaft; thus, the brushless motor 202a and the fan 204a have been well supported before being placed in the wind pressure chamber 16a.
  • the fan module 20a also integrates a circuit board 206a for controlling the operation of the motor 202a.
  • the circuit board 206a is fixedly connected to the fan housing 22a, and is arranged downstream of the brushless motor 202a along the airflow movement direction. In this way, the materials inside the fan module 20a can be fully integrated and concentrated, the assembly process is reduced and simplified, and the assembly cost is reduced.
  • the maximum outer diameter D1 of the fan module 20a is between 45-80 mm.
  • the longitudinal axis X1 of the boom assembly 34a and the rotation axis X2 of the motor 202a are arranged in parallel; and the rotation axis X2 of the brushless motor 202a is compared to The longitudinal axis X1 of the spray rod assembly 34a is further away from the handle 12a.
  • the longitudinal axis X1 of the spray rod assembly 34 and the rotation axis X2 of the brushless motor 202 are optimally selected.
  • the radial dimension of the sleeve 30 accommodating the spray rod assembly 34 is a conventional dimension, and is approximately between 30 mm and 40 mm.
  • the ratio of the distance L1 between the longitudinal axis X1 of the boom assembly 34 and the rotation axis X2 of the brushless motor 202 to the maximum outer diameter D1 of the fan module 20 is too large, the farther the fan module 20 is The spray bar assembly 34 is set, that is, the center of gravity of the spray gun 100 is set higher. The consequence is that the spray gun 100 is not easy to be manipulated, and the structure of the whole machine is large.
  • the optimal ratio of the distance L1 between the longitudinal axis X1 of the boom assembly 34 and the rotation axis X2 of the brushless motor 202 to the maximum outer diameter D1 of the fan module 20 also depends on the value range of the maximum outer diameter D1 , The spray gun 100 is arranged within this value range.
  • the longitudinal axis X1 of the spray bar assembly 34 coincides with the rotation axis X2 of the brushless motor 202; when 45 ⁇ maximum outer diameter D1 ⁇ 80mm, the spray gun 100
  • the distance L1 between the longitudinal axis X1 of the rod assembly 34 and the rotation axis X2 of the brushless motor 202 satisfies: (D1-45)/2+2.5mm ⁇ L1 ⁇ 20mm.
  • the maximum distance between the longitudinal axis X1 of the boom assembly 34 and the rotation axis X2 of the brushless motor 202 is 20 mm.
  • the fan module is located away from the spray bar assembly, that is, the fan module is located away from the sleeve, which makes the structure of the whole machine large and the center of gravity is higher, which is not conducive to manipulation.
  • the distance between the longitudinal axis X1 of the boom assembly 34 and the rotation axis X2 of the brushless motor 202 is between 2.5-20 mm.
  • the distance between the longitudinal axis X1 of the spray bar assembly and the rotation axis X2 is 10 mm.
  • the maximum outer diameter D1 of the fan module is between 30-80mm, and the maximum outer diameter of the first housing at its tail is between 42mm-92mm.
  • the fan module of the present invention Due to the adoption of the high-speed brushless motor, the fan module of the present invention has a smaller structural size, so that the installation flexibility of the fan module in the wind pressure chamber is improved, and finally the longitudinal axis X1 of the spray rod assembly is improved. It is possible to be arranged parallel to or coincident with the rotation axis X2 of the brushless motor, resulting in a more compact overall machine layout.
  • the circuit board 206 is fixedly connected to the downstream of the motor body 203 along the airflow direction.
  • the outer diameter of the fan housing 22 corresponding to the axial position of the circuit board 206 is defined as D2.
  • D1 is not less than D2.
  • the value range of D2 is 40mm-55mm.
  • the rotation speed of the brushless motor is as high as 60,000-120,000 rpm, which causes the blower module to generate greater vibration during the spraying operation of the spray gun, which affects the user's holding comfort.
  • the present invention uses a shock absorption structure to suspend the fan module in the first housing or the air pressure chamber to attenuate the vibration generated by the fan module during high-speed rotation, and reduce the user's grip on the spraying equipment. The vibration you feel at the time.
  • the shock-absorbing structure is a cushioning material, which can be a spring material, a sponge material, or the like.
  • the shock-absorbing structure is made of rubber, especially polyurethane rubber.
  • the first and second embodiments of the present invention adopt the same shock-absorbing structure, including the first shock-absorbing member 8 and the second shock-absorbing member 7 arranged along the airflow direction.
  • the first embodiment is taken as an example to describe the shock-absorbing structure.
  • the first shock-absorbing member 8 is arranged close to the front end of the fan module 20, and the second shock-absorbing member 7 is arranged close to the rear end of the fan module 20;
  • the module 20 is located between the first shock-absorbing member 8 and the second shock-absorbing member 7 in the axial direction.
  • the first damping member 8 and the second damping member 7 clamp the fan module 20 in the axial direction, so as to limit the front and rear axial positions of the fan module 20, and use the first damping member 8 or the second damping member
  • the member 7 is ring-sleeved outside the fan module 20 to realize the radial support and limit of the fan module 20, so that vibration can be buffered and attenuated regardless of the axial direction and the radial direction.
  • the fan module 20 is supported in the wind pressure chamber 16 through a shock absorption structure.
  • the wind pressure chamber 16 may be fixedly installed in the first housing 10.
  • the present application does not limit the wind pressure chamber 16 to also adopt a shock-absorbing structure (for example, the shock-absorbing structure in the following embodiments) to be arranged in the first housing 10 to form a secondary shock-absorbing structure.
  • a shock-absorbing structure for example, the shock-absorbing structure in the following embodiments
  • the wind pressure chamber 16 is provided with a mounting part downstream of the fan module 20 in the airflow direction.
  • the first shock-absorbing member 8 is sandwiched between the fan housing 22 and the mounting portion in the axial direction.
  • the second shock absorber 7 is sleeved between the air inlet ring cover 220 and the air pressure chamber 16.
  • the wind pressure chamber 16 has a front wind pressure shell 6 and a rear wind pressure shell 5.
  • the front end of the front air pressure shell 6 and the sleeve 30 are sleeved and fixed.
  • the installation part may be configured as an air passing plate 9 provided at the front end of the wind pressure chamber 16, and the air passing plate 9 is provided with ventilation holes.
  • the wind board 9 and the circuit board 206 are axially opposite.
  • the end surface of the rear air pressure shell 5 is provided with air inlet meshes.
  • a filter screen 4 is arranged between the rear side of the rear air pressure shell 5 and the rear cover 3 of the first housing. After the outside air flows through the rear cover 3 and the muffler surface 4 of the first housing, it passes through the inlet of the rear air pressure shell 5 The wind mesh enters the fan housing 22.
  • the side of the fan housing 22 facing the mounting portion 9 is provided with a first embedding groove.
  • the side of the mounting portion 9 facing the circuit board 206 is provided with a second embedding groove.
  • the two ends of the first damping member 8 in the axial direction are respectively inserted into the first and second inserting grooves; the first damping member 8 is clamped between the mounting portion 9 and the fan housing 22 .
  • the first damping member 8 and the second damping member 7 cooperate to clamp the fan module 20 in the axial direction.
  • the second damping member 7 may be a rubber ring sleeve that is sleeved outside the fan module 20.
  • the air inlet ring cover 220 is fixedly sleeved in the second shock absorber 7 and is fixedly connected to the motor body 203 of the fan module 20.
  • the air guide structure 225 is fixedly sleeved outside the motor body 203.
  • the air guide structure 225 has air guide holes in the circumferential direction to rotate the fan 204. The airflow is guided as desired, and the wind resistance of the airflow in the fan housing 22 is reduced.
  • the second shock absorber 7 is sleeved in the rear air pressure shell 5 and fills the space between the rear air pressure shell 5 and the air inlet ring cover 220.
  • the rear wall of the air inlet ring cover 220 forms a front axial limit platform
  • the rear air pressure shell 5 is reduced in diameter to form a rear axial limit platform
  • at least part of the second shock absorber 7 is located between the front axial limit platform and the rear Between the axial limit tables.
  • the longitudinal section of the second shock-absorbing member 7 of the ring sleeve structure is an "L"-shaped structure as a whole.
  • the second shock absorber 7 forms an axial limit and radial support for the fan module 20.
  • the longitudinal section of the first shock-absorbing member 8 is a cross-shaped structure as a whole.
  • the first shock absorber 8 can be a three-section cylindrical structure, the outer diameter of the middle cylindrical section is larger than the outer diameters of the front and rear cylindrical sections, the front cylindrical section is inserted into the first groove with interference fit, and the rear cylindrical section passes through The positive fit is inserted into the second groove.
  • the first shock absorber 8b may also be sleeved between the fan housing 22b and the wind pressure chamber 16b.
  • the fan housing 22b has an outer annular groove on the circumferential outer side wall, and the first shock absorber 8b can be sleeved in the outer annular groove.
  • the air pressure chamber 16b is at a position corresponding to the axial direction.
  • the first shock-absorbing member 8b is provided with a communication hole penetrating in the axial direction for air flow to pass through.
  • the plurality of communication holes on the first shock absorber 8b are evenly distributed along the circumferential direction, thereby forming a uniform air outlet in the circumferential direction.
  • FIG. 6 it is a spray gun 100c according to the fourth embodiment of the present invention.
  • the fan housing 22c is fixedly connected to the wind pressure chamber 16c, and the wind pressure chamber 16c is installed in the first housing 10c through a shock-absorbing structure. Therefore, when the vibration generated by the fan module 20c is transmitted to the first housing 10c, it is first transmitted to the wind pressure chamber 16c, and then the vibration is attenuated by the damping structure before being transmitted to the first housing 10c.
  • the vibration received by a housing 10c is relatively weak, which enhances the user's holding operation experience.
  • the fan module 20c can also adopt the solution of the above embodiment, that is, the fan module 20c is installed in the wind pressure chamber 16c through a shock absorption structure to form a secondary shock absorption. This application will not do this. limit.
  • the first damping member 8c and the second damping member 7c have a fixing ring sleeved on the outer wall of the wind pressure chamber 16c.
  • the first damping member 8c and the second damping member 7c are respectively arranged near the front end (such as the circuit board 206c) and the rear end (such as the air inlet ring cover 220c) of the fan module 20c.
  • the outer wall of the wind pressure chamber 16c is provided with a front groove (not marked) and a rear groove (not marked).
  • the first shock-absorbing member 8c and the second shock-absorbing member 7c are respectively embedded in the front and rear grooves. Rubber ring in the groove.
  • the front groove and the rear groove respectively form an axial limit for the first shock absorber 8c and the second shock absorber 7c, so as to avoid axial movement and displacement during rotation.
  • the first damping member 8c and the second damping member 7c partially protrude from the embedding groove, and contact the inner wall of the first housing 10c to form a shock absorber.
  • FIG. 7 it is a spray gun 100d according to the fifth embodiment of the present invention.
  • the fan housing 22d is fixedly connected to the wind pressure chamber 16d, and the wind pressure chamber 16d is installed in the first housing 10d through a shock-absorbing structure.
  • the circuit board 206d for controlling the operation of the motor 202d is arranged in the handle 12d, not in the wind pressure chamber 16d.
  • the fan module 20d can also be supported in the wind pressure chamber 16d through a shock absorption mechanism, which is not limited in this application.
  • any numerical value quoted herein includes all values of the lower and upper values in increments of one unit from the lower limit to the upper limit, and there is a gap of at least two units between any lower value and any higher value. can.
  • the number of a component or the value of a process variable is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate the
  • the specification also explicitly lists values such as 15 to 85, 22 to 68, 43 to 51, and 30 to 32. For values less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)

Abstract

一种喷枪（100），包括：第一壳体（10）；风机模组（20），收容在第一壳体（10）内，用于产生气流，风机模组（20）包括无刷电机（202）和风扇（204）；喷嘴组件（32），包括具有液体出口的喷嘴；喷杆组件（34），被构造成沿其纵轴线相对于喷嘴移动以打开或关闭液体出口；风机模组（20）工作，驱动气流经往喷嘴组件（32），并将喷嘴处的液体雾化喷出；风机模组（20）的最大外径尺寸在30mm-80mm之间，并且喷杆组件（34）的纵轴线与无刷电机（202）的转动轴线平行或重合设置。通过采用具有高速无刷电机（202）的风机模组（20），大大减小了风机模组（20）的体积，减少了用户手持该设备时的负重；并且喷杆组件（34）的纵轴线与无刷电机（202）的转动轴线平行或重合设置，获得了一种更符合人体工程学，更为紧凑的整机形态，提升了用户体验。

Description

喷枪
本申请要求了申请日为2019年11月19日，申请号为201911133021.X的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及手持式喷涂设备领域，尤其涉及一种喷枪。
背景技术
在家居装潢工作中，针对诸如墙壁以及天花板等工件的涂料喷涂工作一贯是其中工作量与施工技巧均较大的部分。因此，涂料喷涂装置作为实施涂料喷涂的核心部件，其加工能力以及使用舒适性一直也是业内关注和提升的重点，而喷漆装置是典型的涂料喷涂装置。
HVLP类型的油漆喷枪通过离心式风机将风从风道吹出，通过文丘里原理将喷嘴处的油漆雾化喷出。但是，目前HVLP类型的油漆均采用直流低速有刷电机，电机尺寸大，重量重，为用户带来较高的工作强度；并且，直流有刷电机的转速较低，为提升进风量，风扇必须具有足够大的风扇直径，这就导致喷枪整机尾部体积大，重量集中在尾部，用户握持费力。
因此，有必要提出一种新的喷枪以解决上述问题。
发明内容
为克服现有技术的缺陷，本发明所要解决的技术问题是提供一种喷枪，以能够降低整机重量，合理整机布局，从而减轻用户握持负担，提升用户操控体验。
为解决上述问题，本发明的技术方案是：一种喷枪，包括：第一壳体；风机模组，收容于所述第一壳体内，用于产生雾化气流；所述风机模组包括无刷电机和由所述无刷电机驱动转动的风扇；套筒，形成或安装在所述第一壳体上；喷嘴组件，设置在所述套筒的远离所述风机模组的一端，所述喷嘴组件具有液体出口；喷杆组件，收容于所述套筒内；所述喷杆组件被构造成沿其纵轴线移动以打开或关闭所述液体出口；其中，所述风机模组的最大外径尺寸D1在30mm-80mm之间，并且所述无刷电机的电机轴线与所述喷杆组件的纵轴线平行或者重合设置。
一种可能的实施方式中，当30mm≤最大外径尺寸D1≤45mm时，所述无刷电机的电机轴线与所述喷杆组件的纵轴线重合设置。
一种可能的实施方式中，当45mm＜最大外径尺寸D1≤80mm时，所述无刷电机的转动轴线与所述喷杆组件的纵轴线平行设置，两者之间的距离L1满足：(D1-45)/2+2.5mm≤L1≤20mm。
一种可能的实施方式中，所述喷枪包括供操作者握持的手柄，沿垂直所述纵轴线的方向，所述无刷电机的电机轴线比所述喷杆组件的纵轴线远离所述手柄。
一种可能的实施方式中，所述喷枪还包括径向支撑在所述第一壳体内的风压腔室，所述风机模组收容在所述风压腔室内。
一种可能的实施方式中，所述风机模组还包括风机壳体，在沿所述气流的运动方向上，所述风扇，无刷电机依次布置在所述风机壳体内；所述风机壳体形成有进风环盖以及出风口；所述风扇转动，气流自所述进风环盖进入所述风机壳体，并自所述出风口流出至所述风压腔室。
一种可能的实施方式中，所述风机模组通过减震结构支撑在所述风压腔室内，从而由高速电机所带来的震动在经由减震结构衰减后才传递至第一壳体，减小了用户的握持震感。
一种可能的实施方式中，所述风扇可转动地设置于所述进风环盖内，并且所述风扇的扇叶所在的轴线位置所对应的进风环盖的外径为所述风机模组的最大外径D1。
一种可能的实施方式中，所述风机模组还包括用于控制所述无刷电机工作的电路板，所述电路板与所述风机壳体固定连接，布置在所述无刷电机的沿所述气流方向的下游。
一种可能的实施方式中，所述电路板所在的轴向位置所对应风机壳体的外径为D2，其中，D2≤D1。
一种可能的实施方式中，D2的取值范围在40mm-55mm之间。
一种可能的实施方式中，所述无刷电机的额定功率在250W-500W之间，转速范围在60000-120000rpm之间。
有益效果：
本申请所提供的喷枪，风机模组采用高速无刷电机，功率范围在250-500W之间，转速范围在60000-120000rpm之间，从而在满足相同工作能力条件下，风机模组的体积可以减小，从而整机重量减小，减少了用户手持该喷枪时的负重；并且，随着风机模组的结构尺寸大幅减小，喷杆组件的纵轴线得以与电机的转动轴线平行或重合设置，从而整机更为紧凑，更符合人体工程学。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本申请第一实施方式提供的喷枪的示意图；
图2是图1所示的喷枪的剖视图；
图3a是图1所示的喷枪中，涉及风机模组的爆炸图；图3b是图3a所示的风机模组在另一视角下的示意图；
图4是本申请第二实施方式提供的喷枪的剖视图；
图5是本申请第三实施方式提供的喷枪的剖视图；
图6是本申请第四实施方式提供的喷枪的剖视图；
图7是本申请第五实施方式提供的喷枪的剖视图；
图8是本申请的喷枪中，涉及无刷电机转子的结构示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式仅仅是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施方式，都应当属于本发明保护的范围。
需要说明的是，当元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的另一个元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中另一个元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1-2，图3a，图3b，本申请第一实施方式提供一种喷枪100，该喷枪100可以用于喷漆、喷水(例如浇花)等等。较佳的，该喷枪100为喷漆设备，例如油漆喷枪。该喷枪100利用文丘里原理，通过高速气流将提供至喷嘴处的油漆雾化、喷出。
喷枪100主要包括动力组件、工作头组件、储液壶以及直流电源。
其中，动力组件包括第一壳体10和风机模组20。其中，风机模组20收容于第一壳体10内，用于产生气流。具体的，风机模组20包括无刷电机202以及由无刷电机202驱动转动的风扇204。
如图2所示，本实施方式的无刷电机202具有转轴201以及电机本体203。电机转子安装于转轴201上，部分伸出所述电机本体203并被所述风扇204套设。如图8a、图8b所示，电机转子205包括固定设置在所述转轴201上的两极磁瓦、或者四极磁瓦。电机本体203包括定子，定子铁芯的叠片厚度为0.2mm。
本实施方式中，风扇204为离心式风扇。
第一壳体10还形成有供操作者握持的手柄12。在手柄12的内部可以具有与无刷电机202电性连接的电源开关13。电源开关13可以与开关扳机38相配合，在开关扳机38被用户内扣移动时，接触并推动电源开关13闭合，以实现喷枪100的启动。手柄12的还下端设置有用于连接直流电源的安装部。本实施方式中，直流电源为电动工具通用电池包14。
一种可能的实施方式中，手柄12还可以与第一壳体10以一种可分开的方式连接。
工作头组件包括套筒30、喷嘴组件32以及喷杆组件34。其中，套筒30与前述第一壳体10连接，并形成有用于连接储液壶36的壶盖以及喷嘴安装部。喷嘴组件32通过喷嘴安装部与套筒30连接，设置在套筒30的远离风机模组20的一端。喷嘴组件32包括喷嘴以及喷嘴调节件。其中，喷嘴具有液体出口，喷嘴调节件用于供用户操作以实现待喷射液体的形状调节。喷杆组件34收容于套筒30内部，被构造成能够沿其纵轴线X1相对于喷嘴组件32运动，从而打开或关闭液体出口。
套筒上30枢转设置前述开关扳机38，用户通过控制开关扳机38运动，从而带动喷杆组件34运动，以将液体出口打开，借此将油漆从该喷枪100喷出。
一种可能的实施方式中，套筒30可以直接形成第一壳体10上。
储液壶36提供有期望该喷枪100所喷射的流体，例如，储液壶36充填有供给至喷嘴组件32的油漆。当安装部连接电池包14后，电池包14的端部与储液壶36的底表面在相同的平面内延伸。由此，电池包14与储液壶36共同形成支脚，以便牢固的放置喷枪100。
动力组件还包括径向支撑在第一壳体10内的风压腔室16，前述风机模组20即收容在风压腔室16内。并且，风压腔室16与套筒30通过一种可分开的连接件连接，二者共同形成一个供气流运动的封闭空间。也就是说，由风机模组20产生的气流在风压腔室16的引导下，被完全提供至套筒30。需要说明的是，此处，风压腔室16包括其自身的壳体以及由该壳体所限定的内部空间。
本实施方式中，风压腔室16与第一壳体10卡合连接。
套筒30的内壁与喷杆组件34的外表面之间形成与风压腔室16连通的风道。由风机模组20所产生的雾化气流在流经风压腔室16、风道，并最终流向喷嘴组件32的过程中，会形成两部分气体：
一部分气体经由喷嘴组件32喷出，通过文丘里原理雾化喷出的油漆，同时在吸管35口形成负压，吸走吸管35内的空气，使得连接储液壶36的吸管35内部形成负压；
另一部分气体经由一连通结构进入储液壶36，从而造成储液壶36的液体表面以上形成高压。如此，吸管35内外形成气体压力差，从而油漆通过吸管35被压出储液壶36，并最终被提供至喷嘴组件32。
需要说明的是，参阅图1-2所示，本申请所描述的“前后”方向可以整体与风扇204所产生的气流方向相平行，例如，以喷嘴组件32所在的位置为前端，相应的，风机模组20位于喷嘴组件32的后方。
如图2、3a、3b所示，本发明的风机模组20还包括风机壳体22，前述无刷电机202和风扇204即收容在其内部。风机壳体22设置有进风环盖220。具体的，进风环盖220位于无刷电机202沿气流方向的上游，前述风扇204可转动地支撑在其内部。进风环盖220靠近风压腔室16的后端设置，其后端设有内嵌在风扇204后端的导风口222。风扇204转动时，气流自导风口222进入风机壳体22，并被离心风扇204沿径向向进风环盖220的内壁驱动。风机壳体22还形成有出风口224，气流在流经无刷电机202后，自出风口224流出风机壳体22并进入风压腔室16内。
风机模组20集成有用于支撑无刷电机202以及风扇204的轴承组件。具体的，风机模组20的后端设置有用于支撑无刷电机202以及风扇204的后轴承组件；风机模组20的前端设置有用于支撑无刷电机202以及风扇204的前轴承组件。由此，在将无刷电机202以及风扇204放置在风压腔室16之前，风机模组20即为无刷电机202以及风扇204提供了良好的支撑。
如图2所示，本实施方式的风机模组20还集成了用于控制无刷电机202工作的电路板206。电路板206与风机壳体22固定连接，被风机壳体22收容，位于无刷电机202的沿气流运动方向的下游。
与现有技术将电机与风扇直接支撑在风压腔室的技术方案相比，本发明的风机模组20内部的料件充分整合和集中，从而使得装配工序减少且简化，降低了装配成本。在装入风压腔室16之前，风机模组20就可以单独作为一个组件在前道工位单独装配，节省了很多装配程序，大大提高了装配效率，降低了生产成本。
我们知道，HVLP油漆喷枪100通过高速气流实现液体的雾化，其工作能力主要取决 于风扇204旋转所产生的风量与风压。而风量与风压与风扇204的转速以及风扇204的径向尺寸正相关。
现有技术中，作为驱动源的直流有刷电机的转速较低，而为了提升喷枪的工作能力，风扇的径向尺寸不得不作大。这导致了喷枪的尾部体积大，重量重。
而用户在握持喷枪进行喷涂作业时，虎口与手柄的上端抵接，手指用来按压开关扳机。当喷枪的尾部尺寸较大时，特别是在利用喷枪进行仰喷时，用户的手臂极易与尾部的外壳体发生干涉；并且整机的重心集中在尾部，也不方便用户操作。
故现有技术往往采用将收容有电机与风扇的尾部壳体相较于套筒上翘来避免干涉问题。即，现有技术的喷枪中，电机的转动轴线和喷杆组件的纵轴线呈夹角布置。
而本发明中，喷枪100选用高速电机202作为驱动源，电机202的额定功率在250W-500W之间，电机转速高达60000rpm-120000rpm，从而在相同工作能力的条件下，风扇204的径向尺寸可以减小；并且电机202为无刷电机，具有比有刷电机更强的能量密度，也即，在满足相同工作能力的条件下，电机202的径向尺寸也可以减小。
优选的，无刷电机202的功率范围在250W-300W之间。
本实施方式中，电机本体的外径尺寸为32mm-45mm，风扇204的径向尺寸38mm-55mm。
由于高速无刷电机202的采用，使得风机模组的结构尺寸减小，从而喷枪100整机的重量减小，也即用户手持该喷枪100时的负重得以减小，提升了用户使用体验。
并且，无刷电机202以及风扇204的整体尺寸大幅减小，使得风机模组20的整机体积大幅减小，从而风机模组20在风压腔室16中的安装灵活度得以提升，并使得所述喷杆组件34的纵轴线X1和无刷电机202的转动轴线X2平行或者重合成为可能。
此处，定义风机模组20所具有的最大外径尺寸为D1。通常情况下，风扇204的扇叶所在轴向位置对应的进风环盖220的外径即为风机模组20的最大外径D1。
如图1-2，图3a，图3b所示，为本发明的第一实施方式。本实施方式中，风机模组20的最大外径尺寸D1在30-45mm之间。该尺寸范围较小，从而使得喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2重合设置成为可能，因而喷枪100的结构更加紧凑，重心也更靠近用户握持时的虎口区域，方便用户操纵。
如图4所示，为本发明的第二实施方式。本实施方式提供的喷枪100a与第一实施方式提供的喷枪100的功能结构基本相同，其不同之处在于：风机模组20a的最大外径尺寸大于第一实施方式的风机模组20的最大外径尺寸，从而风机模组20a的布局有所不同。
与第一实施方式类似，本实施方式的风机模组20a包括：风机壳体22a，风扇204a以及无刷电机202a。其中，风机壳体22a设置有进风环盖220a以及出风口224a。风扇 204a转动时，气流自进风环盖220a流入风机壳体22a，并自出风口224a流出至风压腔室16a中。
风机模组20a还集成有用于支撑电机转轴的前、后轴承组件；从而无刷电机202a和风扇204a在放置在风压腔室16a前已经获得了良好的支撑。
风机模组20a还集成有用于控制电机202a工作的电路板206a。电路板206a与风机壳体22a固定连接，布置在无刷电机202a的沿气流运动方向的下游。如此，风机模组20a内部的料件就能够充分整合和集中，装配工序减少且简化，降低了装配成本。
本实施方式中，风机模组20a的最大外径尺寸D1在45-80mm之间。此时，如果还是以实施方式一中的，喷杆组件34a的纵轴线X1与电机202a的转动轴线X2重合来布置的话，在用户握持手柄12a进行喷涂时，特别是在进行仰喷作业时，第一壳体10a的最下端易与用户手臂的手臂发生干涉。
故，本实施方式中，当45mm＜最大外径尺寸D1≤80mm时，喷杆组件34a的纵轴线X1与电机202a的转动轴线X2平行布置；并且，无刷电机202a的转动轴线X2相较于喷杆组件34a的纵轴线X1更远离手柄12a设置。
一种更佳的、在对于所述喷枪100的操纵方面的设计方案可以通过以下方式来实现：最佳地选择了喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的距离L1相对于风机模组20的最大外径尺寸D1的比例。在此，收容喷杆组件34的套筒30的径向尺寸为常规尺寸，约在30mm-40mm之间。如果喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的距离L1相对于所述风机模组20的最大外径尺寸D1的比例太大，那么风机模组20越远离所述喷杆组件34设置，也即，喷枪100整机的重心越偏上设置。后果是，喷枪100不易被操纵，且整机结构尺寸大。喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的距离L1相对于风机模组20的最大外径尺寸D1的最佳比例也取决于最大外径尺寸D1的取值范围，在该取值范围内安排了所述喷枪100。当30≤最大外径尺寸D1≤45mm时，喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2重合设置；当45＜最大外径尺寸D1≤80mm时，所述喷枪100的喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的距离L1满足：(D1-45)/2+2.5mm≤L1≤20mm。此处，限定了喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的最大距离为20mm.当喷杆组件34的纵轴线X1与无刷电机202的转动轴线X2之间的距离L1大于20mm时，风机模组远离喷杆组件设置，也即，风机模组远离套筒设置，由此使得整机结构尺寸大，且重心偏上，不利于操纵。
在沿垂直于纵轴线X1的方向，所述喷杆组件34的纵轴线X1和所述无刷电机202的转动轴线X2之间的间距在2.5-20mm之间。优选的，沿所述垂直于喷杆组件34a的纵 轴线X1的方向，所述喷杆组件的纵轴线X1和所述转动轴线X2之间的间距为10mm。
本发明中，风机模组的最大外径尺寸D1在30-80mm之间，第一壳体在其尾部的最大外径尺寸在42mm-92mm之间。
由于高速无刷电机的采用，本发明的风机模组具有更小的结构尺寸，从而风机模组在风压腔室中的安装灵活度得到提升，并最终使得所述喷杆组件的纵轴线X1和无刷电机的转动轴线X2平行或者重合设置成为可能，获得了更为紧凑的整机布局。
如图2所示，在气体经过进风环盖220后，会沿着进风环盖220的内壁向风压腔室16的前端流动前进，电路板206将在风压腔室16的出风处形成阻挡。
相应的，电路板206在出风处的直径越小时，或者是，电路板206所在的轴向位置所对应的风机壳体22的外径越小时，风扇204所驱动的气流前进受到的阻力越小，风阻和损耗也相应减少。
基于此考虑，所述电路板206沿气流方向固定连接于所述电机本体203的下游。
此处，定义电路板206所在轴向位置所对应的风机壳体22的外径尺寸为D2。其中，D1不小于D2。具体的，D2取值范围为40mm-55mm。
进一步地，为降低风阻，电路板206的直径越小越好，该电路板206优选直径为40mm。
本发明中，无刷电机的转速高达60000-120000rpm，导致喷枪在进行喷涂作业时，风机模组将产生较大的的震动，影响用户的握持舒适性。
为此，本发明将利用减震结构将风机模组悬空设置在第一壳体或者风压腔室中，以衰减风机模组在高速转动过程中所产生的震动，减轻用户在握持该喷涂设备时所感受的震动。
优选的，该减震结构为缓冲材料，其可以为弹簧材质、海绵材质等等，作为优选的，所述减震结构为橡胶材质，尤其是聚氨酯橡胶。
如图2、图4所示，本发明第一、二实施方式采用相同的减震结构，包括沿气流方向布置的第一减震件8和所述第二减震件7。
下面以第一实施方式为例，对该减震结构进行相关说明。如图2、3所示，所述第一减震件8靠近所述风机模组20的前端设置，所述第二减震件7靠近所述风机模组20的后端设置；所述风机模组20沿轴向位于所述第一减震件8和所述第二减震件7之间。第一减震件8和第二减震件7沿轴向将风机模组20夹紧，实现对风机模组20的前后轴向限位，并利用第一减震件8或者第二减震件7环套在风机模组20外实现对风机模组20的径向支撑限位，从而不论在轴向以及径向均可以对震动进行缓冲衰减。
具体的，风机模组20通过减震结构被支撑在风压腔室16内。在本实施方式中，风压腔室16可以固定安装于第一壳体10内。
当然，本申请并不限制风压腔室16同样可以采用减震结构(例如下述实施方式中的减震结构)设置于第一壳体10中，形成二级减震。
为形成对风机模组20前端的减震，风压腔室16在所述风机模组20沿气流方向的下游设有安装部。所述第一减震件8沿轴向夹设于所述风机壳体22和所述安装部之间。所述第二减震件7环套于所述进风环盖220和所述风压腔室16之间。
具体的，如图2所示，风压腔室16具有前风压壳6和后风压壳5。前风压壳6的前端与套筒30形成套设固定。安装部可以被构造为设置于风压腔室16前端的过风板9，该过风板9上设有通风孔。过风板9和电路板206轴向相对。后风压壳5的端面设有进风网孔。在后风压壳5的后侧与第一壳体后盖3之间布置有过滤网4，外界气流流经第一壳体后盖3和消音面4后，通过后风压壳5的进风网孔进入风机壳体22。
所述风机壳体22面对所述安装部9的一侧设有第一嵌槽。所述安装部9面对所述电路板206的一侧设有第二嵌槽。所述第一减震件8沿轴向的两端分别插入所述第一嵌槽和所述第二嵌槽中；第一减震件8夹紧在安装部9和风机壳体22之间。第一减震件8和第二减震件7相配合将风机模组20轴向夹紧。
第二减震件7可以为环套于风机模组20外的橡胶环套。进风环盖220固定套设于第二减震件7内，并与风机模组20的电机本体203固定连接。在进风环盖220的前侧可以具有导风结构225，该导风结构225固定套设于电机本体203外，导风结构225沿圆周方向具有导风孔，以对风扇204转动所形成的气流进行期望导向，降低气流在风机壳体22中的风阻。
第二减震件7套设于后风压壳5内，将后风压壳5和进风环盖220之间填充。进风环盖220的后壁形成前轴向限位台，后风压壳5向内缩径形成后轴向限位台，至少部分第二减震件7位于前轴向限位台和后轴向限位台之间。
如图2所示，环套结构的第二减震件7的纵剖面整体为“L”形结构。如此，第二减震件7对风机模组20形成轴向限位和径向支撑。
第一减震件8的纵剖面整体为类“十”字结构。第一减震件8可以为三段圆柱体结构，中间圆柱段的外径大于前后两侧圆柱段的外径，前侧圆柱段过盈配合插入到第一嵌槽中，后侧圆柱段过盈配合插入到第二嵌槽中。
如图5所示，为本发明第三实施方式的喷枪100b。本实施方式中，第一减震件8b也可以环套于所述风机壳体22b和所述风压腔室16b之间。风机壳体22b在周向外侧壁上具有外环形嵌槽，第一减震件8b可以环套嵌入在该外环形嵌槽中，相应的，风压腔室16b在轴向所对应的位置处同样设有内环形嵌槽，第一减震件8b同样嵌入在该内环形嵌槽中，如此实现第一减震件8b和风机模组20b的轴向限位。所述第一减震件8b上设有沿轴向贯 通的连通孔，以供气流通过。在第一减震件8b上多个连通孔沿周向均匀分布，从而在周向形成均匀出风。
该实施方式中的第二减震件7b可以参阅上述实施方式中的第二减震件7，本实施方式不再赘述。
如图6所示，为本发明第四实施方式的喷枪100c。本实施方式中，风机壳体22c与风压腔室16c固定连接，风压腔室16c通过减震结构安装于所述第一壳体10c中。故，风机模组20c所产生的震动在向第一壳体10c传递的过程中，先传递到风压腔室16c，后经减震结构将震动衰减才传递至第一壳体10c，从而第一壳体10c所受到的震动较弱，提升用户握持操作体验。
当然，在本实施方式中，风机模组20c同样可以采用上述实施方式的方案，即风机模组20c通过减震结构安装于风压腔室16c中，形成二级减震，本申请对此不作限制。
在本实施方式中，所述第一减震件8c、和所述第二减震件7c固定环套在所述风压腔室16c的外壁上。所述第一减震件8c和所述第二减震件7c分别靠近风机模组20c的前端(例如电路板206c)和后端(例如进风环盖220c)设置。其中，风压腔室16c的外壁上具有前嵌槽(未标示)和后嵌槽(未标示)，第一减震件8c和第二减震件7c分别为嵌入在前嵌槽和后嵌槽中的橡胶环。前嵌槽和后嵌槽分别对第一减震件8c、第二减震件7c形成轴向限位，避免转动过程中轴向窜动移位。第一减震件8c和第二减震件7c部分凸出所在的嵌槽，与第一壳体10c的内壁相接触，形成缓冲减震。
如图7所示，为本发明第五实施方式的喷枪100d。本实施方式中，风机壳体22d与风压腔室16d固定连接，风压腔室16d通过减震结构安装于所述第一壳体10d中。并且，用于控制电机202d工作的电路板206d设置在手柄12d内，而不位于风压腔室16d中。
当然，本实施方式中，风机模组20d也可以通过减震机构支撑于风压腔室16d中，对此，本申请不作限制。
本文引用的任何数值都包括从下限值到上限值之间以一个单位递增的下值和上值的所有值，在任何下值和任何更高值之间存在至少两个单位的间隔即可。举例来说，如果阐述了一个部件的数量或过程变量(例如温度、压力、时间等)的值是从1到90，优选从20到80，更优选从30到70，则目的是为了说明该说明书中也明确地列举了诸如15到85、22到68、43到51、30到32等值。对于小于1的值，适当地认为一个单位是0.0001、0.001、0.01、0.1。这些仅仅是想要明确表达的示例，可以认为在最低值和最高值之间列举的数值的所有可能组合都是以类似方式在该说明书明确地阐述了的。
除非另有说明，所有范围都包括端点以及端点之间的所有数字。与范围一起使用的“大约”或“近似”适合于该范围的两个端点。因而，“大约20到30”旨在覆盖“大约20到大约 30”，至少包括指明的端点。
披露的所有文章和参考资料，包括专利申请和出版物，出于各种目的通过援引结合于此。描述组合的术语“基本由...构成”应该包括所确定的元件、成分、部件或步骤以及实质上没有影响该组合的基本新颖特征的其他元件、成分、部件或步骤。使用术语“包含”或“包括”来描述这里的元件、成分、部件或步骤的组合也想到了基本由这些元件、成分、部件或步骤构成的实施方式。这里通过使用术语“可以”，旨在说明“可以”包括的所描述的任何属性都是可选的。
多个元件、成分、部件或步骤能够由单个集成元件、成分、部件或步骤来提供。另选地，单个集成元件、成分、部件或步骤可以被分成分离的多个元件、成分、部件或步骤。用来描述元件、成分、部件或步骤的公开“一”或“一个”并不说为了排除其他的元件、成分、部件或步骤。
应该理解，以上描述是为了进行图示说明而不是为了进行限制。通过阅读上述描述，在所提供的示例之外的许多实施方式和许多应用对本领域技术人员来说都将是显而易见的。因此，本教导的范围不应该参照上述描述来确定，而是应该参照所附权利要求以及这些权利要求所拥有的等价物的全部范围来确定。出于全面之目的，所有文章和参考包括专利申请和公告的公开都通过参考结合在本文中。在前述权利要求中省略这里公开的主题的任何方面并不是为了放弃该主体内容，也不应该认为发明人没有将该主题考虑为所公开的发明主题的一部分。

Claims (12)

  1. 一种通过气流来雾化液体的喷枪，包括：
    第一壳体；
    风机模组，收容于所述第一壳体内，用于产生雾化气流；所述风机模组包括无刷电机和由所述无刷电机驱动转动的风扇；
    套筒，形成或安装在所述第一壳体上；
    喷嘴组件，设置在所述套筒的远离所述风机模组的一端，所述喷嘴组件具有液体出口；
    喷杆组件，收容于所述套筒内；所述喷杆组件被构造成沿其纵轴线移动以打开或关闭所述液体出口；
    其特征在于，所述风机模组的最大外径尺寸D1在30mm-80mm之间，并且所述无刷电机的电机轴线与所述喷杆组件的纵轴线平行或者重合设置。
  2. 如权利要求2所述的喷枪，其特征在于，当30mm≤最大外径尺寸D1≤45mm时，所述无刷电机的电机轴线与所述喷杆组件的纵轴线重合设置。
  3. 如权利要求1所述的喷枪，其特征在于，当45mm＜最大外径尺寸D1≤80mm时，所述无刷电机的转动轴线与所述喷杆组件的纵轴线平行设置，两者之间的距离L1满足：(D1-45)/2+2.5mm≤L1≤20mm。
  4. 如权利要求3所述的喷枪，其特征在于，所述喷枪包括供操作者握持的手柄，沿垂直所述纵轴线的方向，所述无刷电机的电机轴线比所述喷杆组件的纵轴线远离所述手柄。
  5. 如权利要求1所述的喷枪，其特征在于，所述喷枪还包括径向支撑在所述第一壳体内的风压腔室，所述风机模组收容在所述风压腔室内。
  6. 如权利要求5所述的喷枪，其特征在于，所述风机模组还包括风机壳体，在沿所述气流的运动方向上，所述风扇，无刷电机依次布置在所述风机壳体内；所述风机壳体形成有进风环盖以及出风口；所述风扇转动，气流自所述进风环盖进入所述风机壳体，并自所述出风口流出至所述风压腔室。
  7. 如权利要求6所述的喷枪，其特征在于，所述风机模组通过减震结构支撑在所述风压腔室内。
  8. 如权利要求6所述的喷枪，其特征在于，所述风扇可转动地设置于所述进风环盖内，并且所述风扇的扇叶所在的轴线位置所对应的进风环盖的外径为所述风机模组的最大外径D1。
  9. 如权利要求6所述的喷枪，其特征在于，所述风机模组还包括用于控制所述无刷电机工作的电路板，所述电路板与所述风机壳体固定连接，布置在所述无刷电机的沿所述 气流方向的下游。
  10. 如权利要求9所述的喷枪，其特征在于，所述电路板所在的轴向位置所对应风机壳体的外径为D2，其中，D2≤D1。
  11. 如权利要求10所述的喷枪，其特征在于，D2的取值范围在40mm-55mm之间。
  12. 如权利要求1所述的喷枪，其特征在于，所述无刷电机的额定功率在250W-500W之间，转速范围在60000-120000rpm之间。
PCT/CN2020/130133 2019-11-19 2020-11-19 喷枪 WO2021098781A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20890942.4A EP4063019A4 (en) 2019-11-19 2020-11-19 SPRAY GUN
US17/747,206 US20220274123A1 (en) 2019-11-19 2022-05-18 Spray gun

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911133021 2019-11-19
CN201911133021.X 2019-11-19

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/747,206 Continuation US20220274123A1 (en) 2019-11-19 2022-05-18 Spray gun

Publications (1)

Publication Number Publication Date
WO2021098781A1 true WO2021098781A1 (zh) 2021-05-27

Family

ID=75981324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/130133 WO2021098781A1 (zh) 2019-11-19 2020-11-19 喷枪

Country Status (4)

Country Link
US (1) US20220274123A1 (zh)
EP (1) EP4063019A4 (zh)
CN (2) CN214717603U (zh)
WO (1) WO2021098781A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023006862A1 (de) * 2021-07-30 2023-02-02 J. Wagner Gmbh Handgehaltenes farbsprühgerät
WO2023006861A1 (de) * 2021-07-30 2023-02-02 J. Wagner Gmbh Handgehaltenes farbsprühgerät

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1019896S1 (en) * 2021-08-20 2024-03-26 Zhejiang Prulde Electric Appliance Co., Ltd. Spray gun
USD1028171S1 (en) * 2021-08-20 2024-05-21 Zhejiang Prulde Electric Appliance Co., Ltd. Spray gun
CN118558533B (zh) * 2024-07-31 2024-10-18 江苏大中电机股份有限公司 一种电机外壳防锈喷涂装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201579154U (zh) * 2010-01-08 2010-09-15 浙江天运机电科技有限公司 一种电动喷雾器
CN202606329U (zh) * 2012-03-29 2012-12-19 金建跃 一种高流量低压力气喷枪
CN203227575U (zh) * 2013-04-03 2013-10-09 浙江普莱得电器有限公司 一种电动喷枪电机连接机构
CN203750734U (zh) * 2014-01-18 2014-08-06 浙江瑞丰五福气动工具有限公司 充电式手持电动喷枪
US20160008832A1 (en) * 2014-07-14 2016-01-14 Tsung Mao Industrial Co., Ltd. Device Of Spray Gun For Preventing Liquid From Flowing Backward
CN207013187U (zh) * 2017-06-20 2018-02-16 宁波市威优特电器有限公司 一种直流喷枪
CN109590122A (zh) * 2018-10-29 2019-04-09 宁波市威优特电器有限公司 一种能自由摆动吸管的喷枪
CN209138939U (zh) * 2018-10-30 2019-07-23 南京双全科技有限公司 一种便携式除甲醛喷枪

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004027551B4 (de) * 2004-06-04 2006-06-01 J. Wagner Gmbh Spritzpistole
DE202005005054U1 (de) * 2005-03-31 2006-08-10 J. Wagner Gmbh Schalldämpfer für hochtouriges Gebläse
US7731104B2 (en) * 2006-04-26 2010-06-08 Wagner Spray Tech Corporation Texture sprayer
CN102101084B (zh) * 2011-01-12 2013-03-20 奉化市威优特电器有限公司 一种手持式电喷枪
CN103752442B (zh) * 2014-01-18 2017-02-08 浙江瑞丰五福气动工具有限公司 充电式手持电动喷枪

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201579154U (zh) * 2010-01-08 2010-09-15 浙江天运机电科技有限公司 一种电动喷雾器
CN202606329U (zh) * 2012-03-29 2012-12-19 金建跃 一种高流量低压力气喷枪
CN203227575U (zh) * 2013-04-03 2013-10-09 浙江普莱得电器有限公司 一种电动喷枪电机连接机构
CN203750734U (zh) * 2014-01-18 2014-08-06 浙江瑞丰五福气动工具有限公司 充电式手持电动喷枪
US20160008832A1 (en) * 2014-07-14 2016-01-14 Tsung Mao Industrial Co., Ltd. Device Of Spray Gun For Preventing Liquid From Flowing Backward
CN207013187U (zh) * 2017-06-20 2018-02-16 宁波市威优特电器有限公司 一种直流喷枪
CN109590122A (zh) * 2018-10-29 2019-04-09 宁波市威优特电器有限公司 一种能自由摆动吸管的喷枪
CN209138939U (zh) * 2018-10-30 2019-07-23 南京双全科技有限公司 一种便携式除甲醛喷枪

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4063019A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023006862A1 (de) * 2021-07-30 2023-02-02 J. Wagner Gmbh Handgehaltenes farbsprühgerät
WO2023006861A1 (de) * 2021-07-30 2023-02-02 J. Wagner Gmbh Handgehaltenes farbsprühgerät

Also Published As

Publication number Publication date
CN214717603U (zh) 2021-11-16
EP4063019A1 (en) 2022-09-28
CN112892899A (zh) 2021-06-04
EP4063019A4 (en) 2022-12-14
US20220274123A1 (en) 2022-09-01

Similar Documents

Publication Publication Date Title
WO2021098781A1 (zh) 喷枪
US11346352B2 (en) Garden blower
EP3951063A1 (en) Garden blower
US7360720B2 (en) Spray gun
CN102101084B (zh) 一种手持式电喷枪
KR101295170B1 (ko) 좁은 슬릿 노즐 조립체에 의한 송풍장치
CN104481932B (zh) 风扇
WO2011052560A1 (ja) 送風機
CN103752442B (zh) 充电式手持电动喷枪
CA2487842A1 (en) Power blower
JP2013096337A (ja) 送風作業機
CN214401586U (zh) 吹风机
CN212615499U (zh) 一种基于风道的三出风口的挂脖风扇
CN218207141U (zh) 一种塔式风扇及便携式风扇
CN201949965U (zh) 一种手持式电喷枪
CN212702549U (zh) 一种雾化装置
CN113441308A (zh) 一种雾化装置
CN221480665U (zh) 一种新型吹叶机
CN210660678U (zh) 一种颈挂式风扇
CN111012240B (zh) 一种双头电机式手持吸尘器
CN221074733U (zh) 一种可调节的便携式布风装置
CN212615504U (zh) 一种具有多种出风口组合的挂脖风扇
CN209750154U (zh) 一种高速电吹风
CN212838484U (zh) 一种风动附件
CN201925190U (zh) 一种无风叶风扇

Legal Events

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

Ref document number: 20890942

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020890942

Country of ref document: EP

Effective date: 20220620