Fluid sprayer

Abstract

A spray control assembly includes a spray gun (24) fluidly and electrically connected to a module (26). The lance (24) is configured to output a fluid spray applied on the substrate. A trigger (34) of the spray gun (24) is operably connected to a controller to control actuation of a solenoid connected to a spray valve of the spray gun to actuate the spray valve to open, causing the fluid sprayer to spray. Pressurized spray fluid is provided to the module and flows downstream through the module to the spray gun.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 526,904, filed July 14, 2023, entitled “SPRAYSYSTEM”; U.S. Provisional Application No. 63 / 542,473, filed October 4, 2024, entitled “SPRAYSYSTEM”; U.S. Provisional Application No. 63 / 622,258, filed January 18, 2024, entitled “SPRAYGUNSYSTEM”; and U.S. Provisional Application No. 63 / 565,352, filed March 14, 2024, entitled “FLUIDSPRAYER”, the contents of which are incorporated herein by reference in their entirety. Background Technology

[0003] This disclosure generally relates to fluid sprayers, and more particularly to airless fluid sprayers.

[0004] A fluid sprayer includes a pump that pressurizes and delivers a spraying fluid to a nozzle for outputting the fluid as an atomized spray. The fluid sprayer includes a spray gun that can be held and operated by the user. The spray gun includes a valve that controls the flow of pressurized fluid to the nozzle. A trigger controls the valve's movement between open and closed states. Typically, the trigger is mechanically connected to the valve, requiring the user to physically move the valve from the closed to the open state. Moving the valve to the open state requires the user to overcome the hydraulic pressure of the spraying fluid, which can lead to user fatigue and inefficient spraying operations. Summary of the Invention

[0005] According to an aspect of this disclosure, a core for a spray gun having a solenoid coil includes: a core body defining a fluid chamber and having an inlet and an outlet; a spray valve disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; and a plunger connected to the spray valve, the plunger configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the inlet is fluidly connected to the outlet. The core body, spray valve, and plunger are integrated into a single assembly that can be inserted into and removed from the spray gun as a single assembly.

[0006] According to an additional or alternative aspect of this disclosure, a spray gun includes: a gun body; a solenoid coil disposed within the gun body; a handle; a trigger; a spray valve including a drivable seal fluidly located between an inlet and an outlet; a plunger configured to move by an electromagnetic field generated by the solenoid coil; and a rod connected between the spray valve and the plunger such that the plunger moves by the electromagnetic field generated by the solenoid coil, thereby actuating the spray valve to one or both of an open and / or closed state, wherein the rod extends at least partially into the plunger.

[0007] According to another additional or alternative aspect of this disclosure, a core for a spray gun having a solenoid coil includes: a core body defining a fluid chamber and having an inlet and an outlet; a spray valve disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; and a plunger connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, the plunger being configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the fluid chamber is fluidly connected to the outlet. The core body, spray valve, and plunger are integrated into a single assembly that is insertable into and removable from the spray gun as a single assembly.

[0008] According to another additional or alternative aspect of this disclosure, a core for a spray gun having a solenoid coil includes: a core body having an upstream end and a downstream end and defining a fluid chamber, wherein an inlet and an outlet are formed through the core body; a spray valve disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; a plunger connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, the plunger being configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the fluid chamber is fluidly connected to the outlet; and a rod extending between the plunger and the spray valve to connect the plunger to the spray valve. The core body, the spray valve, and the plunger are integrated into a single assembly that is insertable into and removable from the spray gun as a single assembly. A first distance is set as the opening distance of the spray valve.

[0009] According to another additional or alternative aspect of this disclosure, a core for a spray gun having a solenoid coil includes: a core body having an upstream end and a downstream end and defining a fluid chamber, wherein an inlet and an outlet are formed through the core body; a spray valve disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; and a plunger connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, the plunger being configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the fluid chamber is fluidly connected to the outlet. The plunger shroud includes a flux region and a reluctance region, wherein the flux region is formed of a first type of material and the reluctance region is formed of a second type of material, such that the permeability of the flux region is greater than the permeability of the reluctance region. The plunger radially overlaps with the flux region and the reluctance region. The core body, the spray valve, and the plunger are integrated into an integral assembly that is insertable into and removable from the spray gun as an integral assembly.

[0010] According to another additional or alternative aspect of this disclosure, a method for setting the opening distance of a spray valve of a cartridge in a spray gun includes: placing a plunger of a solenoid on a rod extending between the spray valve and the plunger; positioning the plunger in a set position along the rod to set a displacement distance of the solenoid, thereby setting the opening distance of the spray valve; and securing the plunger and the rod together such that the plunger is held in the set position.

[0011] According to another additional or alternative aspect of this disclosure, a spray gun includes: a gun body; a solenoid coil disposed within the gun body; a handle; a trigger; a valve housing supported by the gun body and the solenoid coil at least partially disposed within the valve housing, the valve housing including a fluid receiver configured to receive spray fluid; and a coil housing mounted to the fluid receiver, the coil housing supporting the solenoid coil, wherein the coil housing extends into the fluid receiver for connection to the fluid receiver; a spray valve including a drivable seal fluidly located between an inlet and an outlet; and a plunger configured to move by an electromagnetic field generated by the solenoid coil, thereby actuating the spray valve to an open state, in which the inlet is fluidly connected to the outlet.

[0012] According to another additional or alternative aspect of this disclosure, a spray gun includes: a gun body; a solenoid coil disposed within the gun body; a handle; a trigger; a valve housing supported by the gun body, with the solenoid coil at least partially disposed within the valve housing; a spray valve including a drivable seal fluidly located between an inlet and an outlet; and a plunger configured to move by an electromagnetic field generated by the solenoid coil, thereby actuating the spray valve to an open state, in which the inlet is fluidly connected to the outlet. The solenoid coil is axially and radially clamped between an outer groove and an inner groove of the valve housing.

[0013] According to another additional or alternative aspect of this disclosure, a spray system that outputs spray fluid via a hose having a connector includes: a spray gun including a valve, an electric actuator for actuating the valve, a handle, a trigger, and a sensor for detecting trigger actuation; a battery; and a component controller configured to: receive electrical energy from the battery; transmit a unique identifier in a spray gun pairing mode; receive a signal from the sensor indicating trigger actuation; supply electrical energy to the electric actuator based on the signal; and transmit an instruction with the unique identifier based on the signal.

[0014] According to another additional or alternative aspect of this disclosure, a spray system that delivers spray fluid via a hose having a connector includes: a spray gun including a valve, an electric actuator for actuating the valve, a handle, a trigger, and a sensor for detecting trigger actuation; a battery; a component controller configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; deliver electrical energy to the electric actuator based on the signal; and send a command based on the signal; a pump; an electric motor configured to operate the pump; and a spray controller configured to: receive a command; and start or stop the electric motor by changing a threshold pressure setpoint.

[0015] According to another additional or alternative aspect of this disclosure, a spraying system includes: a spray gun including a valve, an electric actuator for actuating the valve, a handle, a trigger, and a sensor for detecting trigger actuation; a battery; a component controller configured to: receive electrical energy from the battery; send a unique identifier to a spraying controller of a pumping component in a spray gun pairing mode; receive a signal from a sensor indicating trigger actuation; supply electrical energy to the electric actuator based on the signal; and send a spraying command based on the signal, the spraying command including spraying information and the unique identifier; a pumping component including: a pump; an electric motor configured to operate the pump; and a spraying controller configured to: receive the unique identifier in a sprayer pairing mode; and store the unique identifier as an instruction identifier in a memory of the spraying controller; receive the spraying command; and start or stop the electric motor based on a comparison of the unique identifier in the spraying command with the instruction identifier.

[0016] According to another additional or alternative aspect of this disclosure, a pumping assembly for a spraying system includes: a pump; an electric motor configured to operate the pump; and a spraying controller configured to: control the operation of the electric motor based on a target pressure setpoint to start or stop pumping; adjust the value of the target pressure setpoint to a remapped pressure setpoint to stop the electric motor and stop pumping, wherein the remapped pressure setpoint is generated based on measured pressure.

[0017] According to another additional or alternative aspect of this disclosure, a spraying system includes: a spray gun including a valve, an electric actuator for actuating the valve, a handle, a trigger, and a sensor for detecting trigger actuation; a battery; a component controller configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; and supply electrical energy to the electric actuator based on the signal; and a pumping component including: a pump; an electric motor configured to operate the pump; and a spraying controller configured to start or stop the electric motor, the spraying controller being configured to control the operation of the electric motor based on a threshold pressure setting. The component controller is configured to provide a pressure adjustment command to the spraying controller. The spraying controller is configured to change a target pressure setpoint based on the pressure adjustment command.

[0018] According to another additional or alternative aspect of this disclosure, a spray control assembly for a pumping assembly that outputs spray fluid through a supply hose having a connector includes: a spray gun including a spray valve, an actuator for actuating the spray valve, a handle, a trigger, and a sensor for detecting trigger actuation; a conduit including at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; and a module including: an inlet connector configured to attach to a connector of the supply hose to receive spray fluid from a sprayer pump into the module; a battery; a module housing; and an assembly controller, at least partially located within the module housing, the assembly controller being configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; and deliver electrical energy to the actuator through one or more of the at least one electrical conductor of the conduit.

[0019] According to another additional or alternative aspect of this disclosure, a spray control assembly for a pumping assembly that outputs spray fluid via a supply hose having a connector includes: a spray gun including a spray valve, an actuator for actuating the spray valve, a handle, a trigger, and a sensor for detecting trigger actuation; a conduit including at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; and a module including: an inlet connector configured to attach to a connector of the supply hose to receive spray fluid from a sprayer pump into the module; a battery; a module housing; and an assembly controller, at least partially located within the module housing, the assembly controller being configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; and deliver electrical energy to the actuator via one or more of the at least one electrical conductor in the conduit. The module does not include a pump.

[0020] According to another additional or alternative aspect of this disclosure, a spray control assembly for a pumping assembly dispensing spray fluid via a supply hose having a connector includes: a spray gun including a spray valve, an actuator for actuating the spray valve, a handle, a trigger, and a sensor for detecting trigger actuation; a conduit including at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; and a module including: a module body having a main housing and a module handle spaced apart from the main housing; an inlet connector supported by the module body and configured to attach to a connector of the supply hose to receive spray fluid from a sprayer pump into the module; a battery supported by the module body; and an assembly controller at least partially located within the module housing, the assembly controller being configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; and deliver electrical energy to the actuator via one or more of the at least one electrical conductor in the conduit. A flow path passes through the handle such that the spray fluid received via the inlet connector flows within the module handle between the inlet connector and the conduit.

[0021] According to another additional or alternative aspect of this disclosure, a spray control assembly for a pumping assembly for distributing spray fluid through a supply hose having a connector includes: a spray gun including a spray valve, an actuator for actuating the spray valve, a handle, a trigger, and a sensor for detecting trigger actuation; a conduit including at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; and a module including: a module body; a filter manifold supported by the module body, the filter manifold being at least partially disposed within the module body and including a filter housing and a filter within the filter housing; an inlet connector supported by the filter housing and configured to attach to a connector of the supply hose to receive spray fluid entering the filter manifold; a battery supported by the module body; and an assembly controller at least partially located within the module housing, the assembly controller being configured to: receive electrical energy from the battery; receive a signal from the sensor indicating trigger actuation; and deliver electrical energy to the actuator through one or more of the at least one electrical conductor of the conduit.

[0022] According to another additional or alternative aspect of this disclosure, a spray gun includes: a gun body having a handle; a trigger; a solenoid coil located within the gun body; and a cartridge for mounting to the spray gun, the cartridge including: a cartridge body defining a fluid chamber and having an inlet and an outlet; a spray valve disposed within the cartridge body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; and a plunger connected to the spray valve, the plunger configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the inlet is fluidly connected to the outlet. During installation and removal of the cartridge, the trigger remains stationary.

[0023] According to another additional or alternative aspect of this disclosure, a spray gun includes: a gun body having a handle; a trigger; a solenoid coil located within the gun body; and a cartridge core mountable to the spray gun, the cartridge core including: a cartridge core body defining a fluid chamber and having an inlet and an outlet; a spray valve disposed within the cartridge core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; and a plunger connected to the spray valve, the plunger configured to move by an electromagnetic field generated by the solenoid coil to actuate the spray valve to an open state, in which the inlet is fluidly connected to the outlet. All mechanical actuators for displacing the spray valve opening and closing are part of the cartridge core, such that the mechanical actuators are mounted with and removed from the cartridge core. Attached Figure Description

[0024] Figure 1 This is a schematic block diagram of the spraying system.

[0025] Figure 2 A illustrates a spraying system.

[0026] Figure 2 B is the isometric view of the pumping assembly.

[0027] Figure 3A This is a block diagram showing the spray control components.

[0028] Figure 3B This is an isometric view of the spray control components.

[0029] Figure 4A This is an isometric view of the spray gun.

[0030] Figure 4B This is an isometric exploded view of the spray gun.

[0031] Figure 5 It is along Figure 4A Cross-sectional view of centerline 5-5.

[0032] Figure 6A This is a cross-sectional view showing the fluid handling components of the spray gun.

[0033] Figure 6B yes Figure 6A An exploded view of the component is shown.

[0034] Figure 7A It is an isometric view of the mounting structure used for solenoid plungers.

[0035] Figure 7B It is along Figure 7A Cross-sectional view of the center line BB.

[0036] Figure 8 yes Figure 6A A magnified view of detail 8.

[0037] Figure 9 This is a schematic diagram illustrating the flow of electromagnetic flux.

[0038] Figure 10 This is an isometric view of the plunger assembly.

[0039] Figure 11 This is an isometric view of the plunger assembly.

[0040] Figure 12A This is a cross-sectional view showing the fluid handling components of the spray gun.

[0041] Figure 12B yes Figure 12A An exploded view of the component is shown.

[0042] Figure 13 This is a cross-sectional view showing the fluid handling components of the spray gun.

[0043] Figure 14AThis is the first isometric view of the spray control component module.

[0044] Figure 14B This is the second isometric view of the module.

[0045] Figure 14C This is the first isometric exploded view of the module.

[0046] Figure 14D This is the second isometric exploded view of the module.

[0047] Figure 15 It is along Figure 14A Cross-sectional view of centerline 15-15.

[0048] Figure 16 It is along Figure 14A Cross-sectional view of centerline 16-16.

[0049] Figure 17 This is an isometric view of the spray control components.

[0050] Figure 18A This is an isometric view of the module mounting base.

[0051] Figure 18B yes Figure 18A A side view of the mounting bracket is shown. Detailed Implementation

[0052] This disclosure relates to a spraying system. The spraying system according to this disclosure includes a pump that pressurizes a spraying fluid, such as paint, varnish, lacquer, topcoat, texture material, adhesive, treatment agent, and other coatings, and other options, and delivers the spraying fluid to an applicator (e.g., a spray gun) via a conduit (e.g., a hose). The spray gun includes a spray valve actuated between a closed and an open state to control the spraying fluid from the spray gun. A trigger of the spray gun is mechanically disengaged from the spray valve, preventing the spray gun from mechanically displacing the spray valve. An electric actuator (e.g., a solenoid) is connected to the spray valve to actuate it.

[0053] The spray control assembly is fluidly connected to the pump to receive the fluid output from the pump. The spray gun of the spray control assembly is fluidly connected to the module of the spray control assembly. The fluid pumped by the pump can flow through the module and then flow downstream to the spray gun.

[0054] The spray gun may include a solenoid operably connected to a spray valve to actuate the spray valve from a closed state to an open state. The spray gun includes a trigger operably connected to the solenoid to actuate the solenoid, which in turn actuates the spray valve. A module of the spray control assembly may be electrically connected to the spray gun to supply power to the spray gun and to the solenoid. In some examples, the module may be configured to support one or more batteries that supply power.

[0055] In some examples, the module may support a filter through which the spray fluid flows before reaching the spray gun. In some examples, the module may include a handle for a user to hold. The handle may be mounted to a support clip to support the module during operation. The support clip may be configured to be mounted on the user, for example, by clipping it onto the user's belt or strap.

[0056] The module can be fluidly and electrically connected to the spray gun via a conduit extending between the module and the spray gun. The conduit includes a hose that delivers spray fluid from the module to the spray gun. The conduit includes one or more conductive connectors, such as wires, that extend between the module and the spray gun to provide an electrical connection between the module and the spray gun.

[0057] The conduit can be connected to the module at a rotation-restricted fit. The rotation-restricted fit prevents the conduit from completing a full circumference relative to the module, protecting the conductive connector and thus the electrical connection between the spray gun and the module. The rotation-restricted fit also allows the conduit to rotate relative to the module, reducing pressure within the conduit.

[0058] The spray gun may include a solenoid operably connected to a spray valve to actuate the spray valve from a closed state to an open state. The spray valve may be housed within a core, which may be mounted as a single unit to or detached from the spray gun body. The core may include an electromagnetic component of the solenoid. In some examples, the core may include a plunger of the solenoid that moves due to current supplied to the solenoid stator.

[0059] The solenoid plunger can be a portion of the barrel that is mounted to and detached from the gun body. The stator of the solenoid can remain mounted within and supported by the gun body when the barrel is detached from the gun body. The plunger can be at least partially housed within the barrel's housing to protect it. In some examples, the plunger can be completely enclosed within the barrel's housing.

[0060] The spray gun's spray valve is configured to open a specific distance to provide a high-quality spray of coating fluid. The stroke distance of the solenoid armature can be set to the distance the spray valve can open. The axial clearance is set by fixing the solenoid plunger in a set position that connects the plunger to the spray valve along the rod.

[0061] The housing that at least partially encloses the plunger can be configured as a flux guide. The housing may include a flux region configured to guide electromagnetic flux. The housing may also include a reluctance region formed of a non-ferromagnetic material. The flux region guides the electromagnetic flux relative to the plunger along an efficient flux path, thereby causing the spray valve to open.

[0062] The spray control component can communicatively connect to the sprayer within the spray system. Communication can be wireless. Communication can originate from the spray gun or module of the spray control component. Communication can be generated based on information produced or provided by the spray gun or module. In some examples, the spray control component can be configured for unidirectional communication. In such examples, the spray control component can be configured to provide instructions to the sprayer, such as instructions regarding the operation of the sprayer motor, instructions regarding pump output pressure, etc. The spray control component can also be configured to not receive communication from the sprayer.

[0063] A spray control assembly and / or components of the spray control assembly (e.g., spray guns and / or modules) may be configured to pair with a sprayer. The pairing component may provide a unique identifier to the sprayer. This unique identifier may be stored in the sprayer's memory as an instruction identifier for the spray control assembly. The sprayer may be configured to receive instructions from the spray control assembly along with the unique identifier. The sprayer may control the operation of its motor based on the instructions and the received unique identifier. Some example sprayers may be configured to control the operation of the motor based on detected fluid parameters and / or received instructions from the spray control assembly. For example, the sprayer may be configured to start or stop the motor operation based on detected pressure changes or received instructions from the spray control assembly.

[0064] In some examples, the spray control component is configured to provide a pressure command to the sprayer. This pressure command causes the sprayer to adjust a target pressure setpoint to supply the output of the sprayer's pump. In some examples, the spray control component can provide an adjustment command that causes the sprayer to incrementally adjust the target pressure setpoint. In some examples, the adjustment command is independent of the pressure value; instead, regardless of the pressure value at the target pressure setpoint, the adjustment command results in an incremental adjustment of the target pressure setpoint.

[0065] When components are positioned in a common axial location along an axis, they are considered to overlap radially. Radial lines extending orthogonally from the axis will pass through each radially overlapping component. When components are positioned in both radial and circumferential locations relative to the axis, they are considered to overlap axially. Axial lines parallel to the axis will pass through the axially overlapping components. When components are aligned around an axis, they are considered to overlap circumferentially, such that a circle centered on the axis passes through the circumferentially overlapping components.

[0066] Figure 1 This is a schematic block diagram of the spraying system 10. Figure 2 The spraying system 10 is shown. Figure 1 and Figure 2They will be discussed together. The spraying system 10 includes a pumping assembly 12 and a spraying control assembly 14. The pumping assembly 12 includes a motor 16, a mounting base 18, a pump 20, and a spraying controller 22. The spraying control assembly 14 includes a spray gun 24, a module 26, and a conduit 28. The spray gun 24 includes a gun body 30 with a handle 32, and includes a trigger 34, a spray valve 36, a solenoid 38, and a nozzle 40. The module 26 includes a module body 42 and an assembly controller 44. The conduit 28 includes a fluid hose 46, a conductor 48, and a sheath 50.

[0067] The spraying system 10 is configured to generate a pressurized spray fluid flow and output the spray fluid as a fluid spray for application onto a substrate. The spraying system 10 includes a pumping assembly 12 comprising a pump 20 configured to output the pressurized spray fluid. A motor 16 (which may be an electric motor including a rotor and a stator) is operatively connected to the pump 20 to enable pumping. The motor 16 may be a rotor-stator type electric motor, among other options. A drive system, such as an eccentric wheel and crank, converts the rotational motion output from the motor 16 into linear reciprocating motion to drive a fluid displacement device, such as a piston, in the pump 20. A mounting base 18 is configured to support other components of the pumping assembly 12. The mounting base 18 may, in other options, include legs and / or wheels, etc.

[0068] Pumping assembly 12 can be a conventional sprayer. Pump 20 can be a piston pump that uses pressurized spray fluid for airless spraying (e.g., airless spraying that does not use pressurized or flowing air to atomize the paint), but it can also be a diaphragm pump. Airless spraying is typically performed between 500 and 7500 psi, more commonly between 800 and 3000 psi. Pump 20 is driven by motor 16. Pumping assembly 12 delivers paint under pressure through supply line 52. Pumping assembly 12 can draw spray fluid from fluid reservoir 21 (e.g., formed by a bucket or other container).

[0069] Sensor 54 is shown in the figure. It is understood that sensor 54 may be absent in various examples. Sensor 54 is operatively associated with a spray fluid downstream of pump 20 and upstream of spray gun 24. Sensor 54 is configured to generate information about one or more characteristics of the spray fluid. In some examples, sensor 54 may be configured as a pressure sensor, configured to generate information about the pressure of the spray fluid. In some examples, sensor 54 may be configured as a flow sensor, configured to generate information about the flow rate of the spray fluid (e.g., flow rate, etc.). It is understood that some examples including sensor 54 may include both pressure and flow sensors, as well as other sensors. Sensor 54 is configured to generate parametric information about the parameters of the spray fluid at a location downstream of pump 20 and upstream of nozzle 40.

[0070] The spray controller 22 is configured to control the operation of the motor 16 to control the output of pressurized spray fluid via the pumping assembly 12. The spray controller 22 is operatively connected to other components of the pumping assembly 12 to control the operation of those other components. The spray controller 22 is operatively (electrically and / or communicatively) connected to the motor 16 to control the operation of the motor 16. The spray controller 22 is operatively (electrically and / or communicatively) connected to the assembly controller 44 to receive commands from the spray control assembly 14. The spray controller 22 is operatively connected to the sensor 54 to receive parameter signals from the sensor 54. For example, the sensor 54 may be configured to provide pressure data, flow data, etc., to the spray controller 22. The spray controller 22 may be configured to direct electrical energy to the motor 16 based on parameter information generated by the sensor 54 and / or based on commands received from the spray control assembly 14.

[0071] The spraying controller 22 is configured to store software, implement functions, and / or process instructions. The spraying controller 22 is configured to perform any of the functions discussed in this invention, including receiving the output of any sensor referenced in this invention, detecting any condition or event referenced in this invention, and controlling the operation of any component referenced in this invention. The spraying controller 22 can be any configuration suitable for controlling the operation of components of the pumping assembly 12, receiving signals from components of the pumping assembly 12, collecting data, processing data, etc. The spraying controller 22 may include hardware, firmware, and / or stored software, and the spraying controller 22 may be wholly or partially mounted on one or more circuit boards. The spraying controller 22 can be of any type suitable for operation according to the techniques described in this invention. Although the spraying controller 22 is shown as a single unit, it will be understood that the spraying controller 22 may be formed from multiple independent controllers. In some examples, the spraying controller 22 may be implemented as multiple independent circuit components.

[0072] The spray control assembly 14 is connected to the pumping assembly 12 via a supply line 52. The supply line 52 fluidly connects the spray control assembly 14 to the pumping assembly 12, such that the spray control assembly 14 receives pressurized spray fluid from the pump 20. The spray control assembly 14 does not include a pump. The spray control assembly 14 does not include components that pressurize the fluid by movement, such as pistons or diaphragms.

[0073] The spray control assembly 14 can be worn by a user during the spraying process. For example, module 26 can be worn via a strap 56 attached to module 26. Module 26 can be worn by wrapping it around the user's body via the strap 56, as a belt or backpack, but other options are also possible. A conduit 28 extends from module 26 to spray gun 24. The fluid hose 46 of conduit 28 provides a flow path for spraying fluid (e.g., paint) from module 26 to spray gun 24. Conduit 28 may also include one or more conductors 48 that conduct signals and / or electrical energy between module 26 and spray gun 24.

[0074] Module 26 is configured to connect to supply line 52 to receive spraying fluid output from pumping assembly 12. For example, module 26 may include an inlet connector attached to supply line 52 to mechanically and fluidly connect module 26 to supply line 52. During operation, paint can be drawn into pump 20 from a tank or other reservoir by suction, pressurized by pump 20, and then output by pump 20 and delivered to module 26 via supply line 52. Spraying fluid continues from module 26 via conduit 28 to spray gun 24, where it is output in a fan-shaped atomized spray pattern through nozzle 40 to a wall or other target surface. It is understood that many types of pumps and sprayers can be used with spray control assembly 14.

[0075] Module 26 is supported on the user via strap 56. Supply line 52 is connected to module 26 to provide spray fluid to spray control assembly 14. Supply line 52 is connected to module 26 such that its weight is borne by module 26. The weight of supply line 52 is not transmitted through module 26 and upwards via conduit 28, then by spray gun 24, and finally by the user's hand. Instead, the weight of supply line 52 is supported by module 26, which is supported on the user via strap 56. This configuration provides a more comfortable and ergonomic spraying experience because the user does not need to bear and support the weight of supply line 52 in their hands. This configuration is particularly useful when the user is spraying at a height, as the increased length of supply line 52, which is not on the ground and is supported by the user, will increase its weight, for example, when the user is on a ladder.

[0076] Module 26 receives the spray fluid flow output by pump 20. A conduit 28 extends between module 26 and spray gun 24. A sheath 50 encloses other components of conduit 28. A fluid hose 46 extends between module 26 and spray gun 24 to deliver pressurized spray fluid from module 26 to spray gun 24. A conductor 48 extends between the electrical components of spray gun 24 and module 26. Conductor 48 may be formed of wire, among other options. In the example shown, conductor 48 is positioned outside fluid hose 46 and is not exposed to the spray fluid flowing within fluid hose 46. In the example shown, one or more conductors 48 may extend between trigger 34 and component controller 44, and between solenoid 38 and component controller 44. Sheath 50 encloses conductor 48 and fluid hose 46. Conductor 48 is configured to transmit signals (communication and / or electrical energy) between module 26 and spray gun 24.

[0077] The spray gun 24 is configured to receive pressurized fluid pumped by the pump 20. The pressurized spray fluid flows through the module 26 and the conduit 28 before flowing to the spray gun 24. The pressurized fluid flows through the fluid hose 46 to the spray gun 24 and is output from the spray gun 24 as an atomized spray fluid atomized through the nozzle 40. The spray gun 24 is operatively connected to the component controller 44 to control the spray fluid being ejected from the spray gun 24.

[0078] The gun body 30 supports the other components of the spray gun 24. The handle 32 is formed as a protrusion and configured for one-handed grip by the user. The handle 32 may be integrally formed with the gun body 30 (e.g., integrally formed) or formed separately.

[0079] Trigger 34 is operatively connected to component controller 44 to provide a spray signal to component controller 44. Trigger 34 is formed on the front side of the gun handle 32. In the example shown, trigger 34 is wired to component controller 44 via conduit 28. Actuation of trigger 34 generates a spray signal that is transmitted to component controller 44, causing component controller 44 to initiate spraying via spray gun 24. Pressing trigger 34 causes component controller 44 to direct electrical energy to solenoid 38, causing spray valve 36 to open. Releasing trigger 34 reduces electrical energy to solenoid 38, allowing spray valve 36 to close.

[0080] Nozzle 40 is configured to spray the coating fluid as an atomized fluid. Nozzle 40 forms the outlet of spray gun 24 through which the coating fluid is sprayed. Nozzle 40 can form the spray pattern ejected from spray gun 24.

[0081] A spray valve 36 is disposed within the spray gun 24. The spray valve 36 is supported by the gun body 30. The spray valve 36 is located upstream of the nozzle 40. The spray valve 36 is configured to control the flow of coating fluid to the nozzle 40 for ejection from the spray gun 24. The spray valve 36 is actuable between a closed state and an open state. In the closed state, the spray valve 36 prevents the flow of coating fluid to the nozzle 40; in the open state, the coating fluid can flow through the spray valve 36 to the nozzle 40 for ejection from the spray gun 24. The spray valve 36 includes an actuable seal that can be moved to allow or prevent the flow of coating fluid through the spray valve 36.

[0082] Solenoid 38 is operatively connected to spray valve 36 to control the actuation of spray valve 36 between closed and open states. For example, the armature of solenoid 38 may be connected to a movable part of spray valve 36, such that movement of the armature causes movement of valve components of spray valve 36. Solenoid 38 may be configured as a single-acting solenoid to displace spray valve 36 from one state to another (e.g., from closed to open), or as a double-acting solenoid to displace spray valve 36 from open to closed and from closed to open. Solenoid 38 may be operatively connected to module 26 via one or more conductors 48 to receive electrical power and / or communication signals from module 26.

[0083] Power source 58 is configured to supply electrical power to the electrical components of the spray control assembly 14, such as the assembly controller 44 and solenoid 38. Power source 58 may be formed by a battery, such as a rechargeable lithium-ion battery, and other options. Power source 58 may be supported by module body 42. In some examples, the battery forming power source 58 may be mounted externally to module body 42. In other examples, the battery forming power source 58 may be mounted internally to module body 42. The battery forming power source 58 may be of a type commonly used in power tools, such as for supplying power to a cordless drill.

[0084] Component controller 44 is operatively connected to other components of spray control assembly 14 to control the operation of those other components. Component controller 44 is operatively connected (electrically and / or communicatively) to trigger 34, for example via conductor 48, to receive control signals from trigger 34. For example, trigger 34 may be configured to provide a spray signal to component controller 44, causing component controller 44 to open spray valve 36, thereby causing spray gun 24 to spray. Trigger 34 may be configured to provide a spray signal to component controller 44, causing component controller 44 to close spray valve 36, thereby causing spray gun 24 to stop spraying. Component controller 44 is operatively connected (electrically and / or communicatively) to solenoid 38, for example via conductor 48, to control the actuation of solenoid 38, thereby controlling the actuation of spray valve 36.

[0085] Component controller 44 is configured to store software, implement functions, and / or process instructions. Component controller 44 is configured to perform any functions discussed in this invention, including receiving the output of any sensor referenced in this invention, detecting any condition or event referenced in this invention, and controlling the operation of any component referenced in this invention. Component controller 44 can be any configuration suitable for controlling the operation of components of spray control assembly 14, receiving signals from components of spray control assembly 14, providing control signals to pumping assembly 12, collecting data, processing data, etc. Component controller 44 may include hardware, firmware, and / or stored software, and component controller 44 may be wholly or partially mounted on one or more circuit boards. Component controller 44 can be of any type suitable for operation according to the techniques described in this invention.

[0086] In one example, control circuitry 60 is configured to implement functions and / or process instructions. For example, control circuitry 60 is capable of processing instructions stored in memory 62. Examples of control circuitry 60 may include one or more of a processor, microprocessor, controller, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other equivalent discrete or integrated logic circuitry. Control circuitry 60 may be mounted wholly or partially on one or more circuit boards.

[0087] Memory 62 may be configured to store information before, during, and / or after operation. In some examples, memory 62 is described as a computer-readable storage medium. In some examples, the computer-readable storage medium may include a non-transitory medium. The term "non-transitory" may mean that the storage medium is not included in a carrier wave or propagating signal. In some examples, a non-transitory storage medium may store data that changes over time (e.g., in RAM or a cache). In some examples, memory 62 is temporary memory, meaning that the primary purpose of memory 62 is not long-term storage. In some examples, memory 62 is described as volatile memory, meaning that memory 62 does not retain its stored contents when the power to component controller 44 is turned off. Examples of volatile memory may include random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), and other forms of volatile memory. In some examples, memory 62 is used to store program instructions executed by control circuitry 60. In one example, memory 62 is used by software or an application to temporarily store information during program execution.

[0088] In some examples, memory 62 also includes one or more computer-readable storage media. Memory 62 may be configured to store a larger amount of information than volatile memory. Memory 62 may be further configured to store information for a long period. In some examples, memory 62 includes non-volatile storage elements. Examples of such non-volatile storage elements may include magnetic hard disks, optical disks, flash memory, or electrically programmable memory (EPROM) or electrically erasable programmable memory (EEPROM).

[0089] The component controller 44 may include any type of circuitry, such as programmable circuitry, integrated circuits, or logic arrays, as well as other supporting circuitry, to perform any of the functions referenced in this invention. For example, the component controller 44 may receive electrical energy from a power source 58 and may supply electrical energy to the spray gun 24 via one or more conductors 48. As further discussed in this invention, in order to control the solenoid 38 of the spray gun 24, the component controller 44 may receive one or more signals indicating the actuation of the trigger 34 and the need to supply electrical energy to the solenoid 38 to open and close the spray valve 36 based on whether the trigger 34 is actuated or released. In some examples, the component controller 44 may be communicatively connected to the spray controller 22, for example, via communication circuitry. For example, the communication circuitry may be configured to communicate wirelessly with the spray controller 22 to facilitate communication between the spray control component 14 and the pumping component 12. The component controller 44 may be configured to communicate with the pumping component 12 in any wired or wireless manner. For example, the component controller 44 can command the pumping component 12 to operate the motor 16 and the spraying control component 14 in a synchronized manner, for example by sequentially or simultaneously opening the spray valve 36 and starting the motor 16.

[0090] In some examples, component controller 44 is configured to communicate unidirectionally with paint control 22. For example, component controller 44 may be configured to include a transmitter configured to output a signal, and paint control 22 may be configured to include a receiver configured to receive the signal output by component controller 44. Component controller 44 may be configured not to receive wireless communication signals. Component controller 44 may be configured to be unable to receive wireless communication signals. Component controller 44 may be configured to provide communication to paint control 22, but not receive communication from paint control 22.

[0091] In some examples, the spray control assembly 14 is configured to operate in a spray gun pairing mode. The spray control assembly 14 may be positioned in the spray gun pairing mode, and the pumping assembly 12 may be positioned in the sprayer pairing mode to pair the spray control assembly 14 with the pumping assembly 12. In the spray gun pairing mode, the spray control assembly 14 may transmit a unique identifier to the pumping assembly 12. The pumping assembly 12 receives the unique identifier and may store it as an instruction identifier in the computer-readable storage 62 of the spray controller 22.

[0092] In some examples, the pumping assembly 12 may output information to the user indicating that the spray control assembly 14 has been paired with the pumping assembly 12. For example, the pumping assembly 12 may provide output via a user interface, such as visually via lights, a graphical user interface, etc., or audibly via a speaker. In some examples, the pumping assembly 12 may be configured to transmit information and provide output via a remote user interface, such as via an application running on a tablet or smartphone, among other options.

[0093] In some examples, the pumping assembly 12 does not provide pairing communication back to the spray control assembly 14. Therefore, the spray control assembly 14 can be configured to operate by providing a unique identifier to the pumping assembly 12 without receiving acknowledgments returned from the pumping assembly 12. In such examples, the pairing mode can be considered one-way pairing. The spray control assembly 14 pairs with the pumping assembly 12 such that the pumping assembly 12 can identify communication from the spray control assembly 14 based on the instruction identifier; however, the pumping assembly 12 does not pair with the spray control assembly 14 such that the spray control assembly 14 is unaware of which pumping assembly 12 it is paired with.

[0094] A user can operate the spraying system 10 when the spraying control component 14 is paired with the pumping component 12. The spraying control component 14 can output a command signal intended to cause the pumping component 12 to operate the motor 16 (e.g., start or stop). The spraying control component 14 outputs its unique identifier as part of the command signal to identify that the command signal was generated by the spraying control component 14. The spraying controller 22 can compare the received unique identifier with a stored command identifier to determine whether the spraying controller 22 should take action. If the received unique identifier does not match the command identifier stored in the memory of the spraying controller 22, the spraying controller 22 can be configured to take no action. If the transmitted unique identifier matches the command identifier stored in the memory of the spraying controller 22, the spraying controller 22 can be configured to take action based on the command signal, such as starting or stopping the motor 16.

[0095] In some examples, the pulling of trigger 34, detected by a sensor—such as a reed switch, proximity sensor, Hall effect sensor, or other type of sensor—directly starts the motor 16 of the pumping assembly 12. In some examples, the release of trigger 34, detected by a sensor, directly stops the motor 16 of the pumping assembly 12. For example, the assembly controller 44 may be configured to generate and provide a start command to the spraying controller 22 based on a signal indicating that trigger 34 is actuated. The assembly controller 44 may also be configured to generate and provide a stop command to the spraying controller 22 based on a signal indicating that trigger 34 is released.

[0096] The user can trigger the trigger 34, causing the spray control assembly 14 to generate and send a start command signal. The user-driven trigger 34 can also cause a sensor detecting the trigger 34 to generate a trigger drive signal. The trigger drive signal causes the assembly controller 44 to output a start command signal. The start command signal (which may include a unique identifier) ​​is received by the pumping assembly 12. The pumping assembly 12 causes the motor 16 to start and operate in response to the start command signal, causing the pump 20 to pump.

[0097] The user can release trigger 34, causing the spray control assembly 14 to generate and send a stop command signal. Releasing trigger 34 can cause sensors detecting trigger 34 actuation and release to generate a trigger release signal. The trigger release signal causes the assembly controller 44 to output a stop command signal. The stop command signal (which may include a unique identifier) ​​is received by the pumping assembly 12. The pumping assembly 12 causes the motor 16 to stop pumping from the pump 20 in response to the stop command signal. It is understood that the trigger release signal can be a discrete signal generated upon releasing trigger 34, or it can be the cessation of a trigger actuation signal.

[0098] In paired mode, the pumping assembly 12 is configured to control the operation of the motor 16 based on a command including a transmission unique identifier that matches the command identifier. This configuration allows the painting system 10 to operate without interference from other painting systems 10. For example, multiple painting systems 10 can operate simultaneously. The first painting system 10 includes a first painting control assembly 14 having a first unique identifier, and the second painting system 10 includes a second painting control assembly 14 having a second unique identifier different from the first unique identifier. Both the first and second painting control assemblies 14 are configured to output start and stop command signals. The first pumping assembly 12 is paired with the first painting control assembly 14 such that the first pumping assembly 12 responds to a command including the first unique identifier. The second pumping assembly 12 is paired with the second painting control assembly 14 such that the second pumping assembly 12 responds to a command including the second unique identifier.

[0099] The first pumping assembly 12 and the second pumping assembly 12 can receive command signals output by both the first spray control assembly 14 and the second spray control assembly 14. However, the first pumping assembly 12 and the second pumping assembly 12 only respond to command signals that include a transmission unique identifier that matches the command identifier associated with that pumping assembly 12. Therefore, the first pumping assembly 12 responds to command signals that include a first unique identifier but does not include communication with a second unique identifier, and the second pumping assembly 12 responds to command signals that include a second unique identifier but does not include communication with the first unique identifier.

[0100] In some examples, the pumping assembly 12 is configured to operate in a dual-control mode, while the spraying system 10 operates in a paired mode. In such a configuration, the pumping assembly 12 is configured to control the operation of the motor 16 based on control signals from the spraying control assembly 14 and signals from the sensor 54. For example, the pumping assembly 12 may be configured to initiate the operation of the motor 16 based on a start command signal received from the spraying control assembly 14 or based on a pressure drop indicated by the sensor 54 (which instructs the spray valve 36 to open for spraying through the spray gun 24). The pumping assembly 12 may be configured to stop the operation of the motor 16 based on a stop command signal received from the spraying control assembly 14 or based on a pressure rise indicated by the sensor 54 (which instructs the spray valve 36 to close to stop spraying through the spray gun 24). This configuration provides reliable operation of the spraying system 10 even if communication between the spraying control assembly 14 and the pumping assembly 12 is lost.

[0101] In some examples, as detected by the sensor, releasing trigger 34 does indeed cause the motor 16 of pumping assembly 12 to stop, but this is achieved by changing the target pressure. The target pressure setpoint is the pressure at which the spray controller 22 of pumping assembly 12 determines when to turn the motor 16 on and off. The target pressure setpoint can be provided to the spray controller 22 by the user, for example, through the user interface of pumping assembly 12. For example, when the detected pressure measured by sensor 54 of pumping assembly 12 at a location downstream of pump 20 is lower than the target pressure setpoint, spray controller 22 starts and / or continues the rotation of motor 16 to operate pump 20. When the detected pressure is higher than the target pressure setpoint, spray controller 22 of pumping assembly 12 stops motor 16 to stop operation of pump 20.

[0102] In various examples, the paint control 22 receives a command instructing the trigger 34 to be driven (e.g., detected by a trigger sensor and communicated by the component controller 44), and in response, the paint control 22 changes the target pressure setpoint based on the currently detected or measured pressure. For example, the paint control 22 may be configured to set the target pressure setpoint based on pressure information generated by sensor 54. The paint control 22 may be configured to remap the target pressure setpoint to generate a remapped pressure setpoint, which may be set to the current detected pressure, approximately the current measured pressure, slightly above the current measured pressure, slightly below the current measured pressure, within a deviation range of the current detected pressure (e.g., within 10 psi), etc. In such a configuration, the paint control 22 may be configured to control the operation of the motor 16 during paint application based on the target pressure setpoint to operate the motor 16 such that the pump 20 is operated to deliver the target pressure setpoint, and the paint control 22 may be configured to control the operation of the motor 16 based on the remapped pressure setpoint to stop the motor. The remapped pressure setpoint can be based on the detected pressure when the pumping assembly 12 receives a stop control command.

[0103] This configuration results in a smoother stop for motor 16, minimizing pressure rises or shocks. During free flow (when trigger 34 is actuated), the detected pressure is typically below the target pressure setpoint. This causes the algorithm to instruct motor 16 to continue running even after trigger 34 is released and spray valve 36 of spray gun 24 is closed, until the actual pressure reaches the target pressure setpoint, which is higher than the actual spray pressure. Then, when trigger 34 is pulled to resume spraying, the spray fluid will initially exit spray gun 24 at a higher pressure until the pressure drops to the free flow pressure described above. This can lead to unintended paint shocks and / or spraying at multiple different pressures, especially when spray valve 36 of spray gun 24 is initially opened until a stable pressure is reached. Therefore, remapping the pressure setpoint based on the current detected pressure setting causes motor 16 to stop immediately or almost immediately without pressure rise, thus avoiding pressure shocks on the next re-triggering. Stopping motor 16 based on the remapped pressure setpoint allows for pressure equalization within the supply line 52 and through the spray controller 22 components, preventing significant pressure fluctuations during spraying. In some examples, the spray controller 22 can be configured to restart motor 16 based on a detected drop in fluid pressure below the remapped pressure setpoint. The spray controller 22 can then control the operation of motor 16 based on a target pressure setpoint while motor 16 is running.

[0104] The pressure setpoint can be reset based on a trigger detected by the sensor, resetting the original input value (e.g., the target pressure setpoint) and returning to communication with the spray controller 22. Therefore, in some examples, as detected by the trigger sensor, pulling the trigger 34 will indeed start the motor 16 of the pumping assembly 12, but this is achieved by changing the pressure setpoint, rather than by directly starting the motor 16 without checking the detected pressure. Furthermore, as detected by the trigger sensor, releasing the trigger 34 will indeed stop the motor 16 of the pumping assembly 12, but this is achieved by changing the pressure setpoint, rather than by directly stopping the motor 16.

[0105] The spray controller 22 can be considered as remapping the pressure setpoint during operation. The initial set pressure is the target pressure setpoint, at which the spray controller 22 controls the operation of the pump 20 to deliver the spray fluid to the target pressure. The spray controller 22 causes the motor 16 to operate, which in turn causes the pump 20 to pump the spray fluid to deliver the detected pressure indicated by the sensor 54 to the target pressure setpoint. For example, when the spray controller 22 receives a start command signal, it can cause the motor 16 to operate and control the operation of the motor 16 based on the target pressure setpoint.

[0106] Then, the spray controller 22 can, based on receiving a stop command signal, change the pressure setpoint to generate a remapped pressure setpoint. As discussed above, the remapped pressure setpoint is used by the spray controller 22 to stop the motor 16. In some examples, the remapped pressure setpoint can be used to start the motor 16 based on receiving another start command signal. The remapped pressure setpoint is lower than the target pressure setpoint. The remapped pressure setpoint is set based on the pressure detected when the spray controller 22 receives the stop command signal.

[0107] In some additional or alternative examples, the spray control assembly 14 is configured to generate and send a pressure adjustment signal to the pumping assembly 12. The pressure adjustment signal communicates with the spray controller 22 and is configured to change a target pressure setpoint for the pumping assembly 12, which sets the pressure at which the spray controller 22 operates the motor 16 during spraying. The pressure adjustment signal can increase and decrease corresponding target pressure setpoints on the pumping assembly 12, wherein the motor 16 starts when the fluid pressure measured downstream of the pump 20 is lower than the set pressure, and stops when the measured pressure reaches and / or exceeds the set pressure.

[0108] A first input, such as through the user interface of the spray control component 14 (e.g., on the spray gun 24 or on the module 26), can increase the target pressure setpoint, and a second input can decrease the target pressure setpoint. Driving the first input causes the spray control component 14 to generate and transmit a pressure increase signal to the spray controller 22. The pressure increase signal causes the spray controller 22 to increase the target pressure setpoint. The second input causes the spray control component 14 to generate and transmit a pressure decrease signal to the spray controller 22. The pressure decrease signal causes the spray controller 22 to decrease the target pressure setpoint. As described in this invention, such pressure setting increases or decreases can be transmitted wirelessly. The user inputting a pressure adjustment signal at the spray control component 14 allows for quick and easy adjustment of the target pressure setpoint from the spray control component 14 without direct connection to the pumping component 12.

[0109] In some examples, the pressure regulation signal is configured to cause incremental adjustments to the target pressure setpoint. The pressure regulation signal may not be associated with a specific pressure value (e.g., set to 500 psi, 1000 psi, 2000 psi, etc.); instead, the pressure regulation signal can cause incremental adjustments to the target pressure setpoint regardless of its actual value. For example, the pressure regulation signal can cause the target pressure setpoint to be adjusted by a percentage of the target pressure setpoint (e.g., 1%, 5%, or other percentage values) or by a fixed pressure value (increasing by 10 psi, 25 psi, etc. per adjustment). This incremental adjustment of the target pressure setpoint by the pressure regulation signal allows the user to easily adjust the target pressure setpoint during equipment operation. Instead of entering a new pressure value, the user can provide fine-tuning of the spray pressure via the spray control component 14, which is located and can be carried by the user. The user can adjust the target pressure setpoint during spraying to provide the desired spray pattern and coverage for the sprayed material. This configuration provides quick and easy adjustment during spraying operations without interrupting the spraying process.

[0110] Figure 3A This is a block diagram of the spray control component 14. Figure 3B This is an isometric view of the spray control assembly 14. Figure 3A and Figure 3B This will be discussed together. The spray gun 24, module 26, and conduit 28 of the spray control assembly 14 are shown. The spray gun 24 includes a gun body 30 (with a handle 32), trigger 34, spray valve 36, solenoid 38, nozzle 40, and sensor 64. The module 26 includes a module body 42, assembly controller 44, internal flow channel 66, inlet connector 68, and filter manifold 70. The conduit 28 includes a fluid hose 46, conductor 48, and sheath 50.

[0111] Module body 42 supports other components of module 26. Module body 42 may be a one-piece or flip-top structure, among other options. In some examples, module body 42 is formed from multiple sub-components. Module body 42 may be formed from a polymer and / or metal housing, among other options. Internal flow channels 66 are formed within module body 42. Internal flow channels 66 are configured to deliver spray fluid through module body 42.

[0112] Module 26 can be connected to a power source 58 (such as a battery). In some examples, such as... Figure 3B As shown, the power supply 58 is mounted externally to the module body 42. However, in some other examples, the power supply 58 may also be internal to the module body 42. In the example shown, the power supply 58 slides along the module body 42 to lock the module body 42, and can also slide away to unlock it from the module body 42. Both the power supply 58 and the module 26 include a terminal that connects when the power supply 58 is engaged with the module body 42. The mounting of the power supply 58 can form a mechanical connection, such that the power supply 58 is supported by the module 26, and can also form an electrical connection, such that the power supply 58 can provide power to the electrical components of the spray control assembly 14. The power supply 58 may be a lithium-ion or other type of battery. The power supply 58 may be of the type commonly used with power tools, such as for providing power to a cordless drill.

[0113] The filter manifold 70 is supported by the module body 42. The filter manifold 70 includes a filter 72, such as a screen, configured to filter fluid particles from the spray fluid passages through module 26. The filter 72 is configured to filter the spray fluid before it flows downstream to the spray gun 24. The filter 72 may be a mesh material through which paint or other spray fluid can pass to filter out larger elements while allowing smaller and / or more fluid elements to pass. The filter 72 may take various forms, such as introducing paint from the inside to the outside as a filter tube. The filter manifold 70 may be drilled out from module body 42 or other parts of module 26 to allow the removal of the screen for cleaning and reassembly. In the example shown, the filter manifold 70 is at least partially located outside module body 42, which allows for easy removal and cleaning or other maintenance of the filter manifold 70, while module body 42 is designed to remain closed for most or all of the life of module 26. The filter manifold 70 is structurally supported by module body 42. The filter manifold 70 can be connected to module 26 at a location within module body 42, among other options.

[0114] Inlet connector 68 is configured to connect to feed line 52 to connect module 26 to feed line 52. In some examples, inlet connector 68 may be of threaded or quick-disconnect type for connection to feed line 52. In the example shown, inlet connector 68 is formed at the upstream end of filter manifold 70. Spray fluid enters spray control assembly 14 through inlet connector 68 and flows through filter manifold 70 and internal flow channel 66, flowing downstream through conduit 28 to spray gun 24 for spraying.

[0115] An internal flow channel 66 is disposed within the module body 42 and configured to receive spray fluid output through the filter manifold 70. The internal flow channel 66 is configured to deliver the spray fluid to the fluid hose 46. The internal flow channel 66 may be formed of a hose or a block, among other options. In some examples, the internal flow channel 66 is disposed within a portion of the filter manifold 70 downstream of the filter 72 or is formed by the filter manifold 70. As described, the internal flow channel 66 extends within the module body 42, but it will be understood that in other examples, the equivalent fluid flow channel is not within the module body 42.

[0116] The outlet connector 74 is configured to connect to the fluid hose 46 to supply spraying fluid to the fluid hose 46. In the example shown, the outlet connector 74 is located within the module body 42. The outlet connector 74 may be a threaded or quick-disconnect connector capable of attaching to the fluid hose 46 at the proximal end 76 of the conduit 28. The fluid hose 46 of the conduit 28 may also include a quick-disconnect or threaded connector for connection to the outlet connector 74 within the module body 42. Similarly, the distal end 78 of the conduit 28 may extend into the gun body 30, where fluid and electrical connections are made. The spray control assembly 14 is intended to be used as an assembly of the module 26, conduit 28, and spray gun 24, and frequent disassembly is not expected or desired, thus protecting and securing the fluid and electrical connections located within the module body 42 and gun body 30.

[0117] In the illustrated example, component controller 44 is supported by module 26 and may be disposed within module body 42. As described above, component controller 44 may include any type of circuitry, such as programmable circuitry, integrated circuits, or logic arrays, as well as other supporting circuitry to implement the functions referenced in this invention. For example, component controller 44 may receive electrical energy from power source 58 and supply electrical energy to spray gun 24 through one or more conductors 48. As further discussed in this invention, in order to control the solenoid 38 of spray gun 24, component controller 44 may receive one or more signals, such as from sensor 64 associated with trigger 34, to indicate the actuation of trigger 34, and may supply electrical energy to solenoid 38 to open and close spray valve 36 based on whether trigger 34 is actuated or released. As discussed above, component controller 44 may also include components for communicating with pumping assembly 12 in any wired or wireless manner, in which, in this example, pumping assembly 12 may be commanded to operate or stop motor 16 based on control signals from component controller 44.

[0118] The spray gun 24 includes a handle 32. The handle 32 can be considered as part of the gun body 30. It is understood that the handle 32 can be integrally formed with other parts of the gun body 30, such as being integrally formed with those other parts, or it can be separately formed from and connected to other parts of the gun body 30, such as via threaded connections and other options. In the example shown, a conduit 28 extends through the bottom of the gun body 30 into the spray gun 24. However, it is understood that in other different examples, the conduit 28 can connect to other areas of the spray gun 24. The handle 32 is designed for one-handed gripping by the user, allowing the spray gun 24 to be supported and operated by the user with one hand.

[0119] The spray gun 24 includes a trigger 34. The trigger 34 is configured to be driven by a single finger, or in some instances by multiple fingers, such that when the trigger is actuated, the spray gun 24 initiates spraying, and when the trigger is released, the spray gun 24 stops spraying. As further shown in the invention, the trigger 34 does not mechanically and directly open the spray valve 36 within the spray gun 24, but rather indirectly and electronically, to control the spraying.

[0120] Sensor 64 is configured to detect the actuation and release of trigger 34. Sensor 64 may be a proximity sensor, Hall effect sensor, switch, or other type of sensor to detect the actuation and release of trigger 34. Sensor 64 may conduct one or more signals along one or more conductors 48 to component controller 44 to indicate the actuation and release of trigger 34. Although the spray gun 24 discussed in this invention is connected to module 26 by a wired connection, the sensor 64 or other components of spray gun 24 may be wirelessly connected to component controller 44 of module 26. In various other examples, a portion of component controller 44 may be within the gun body 30; however, in this example, component controller 44 is entirely located within module 26.

[0121] The spray gun 24 includes a nozzle 80. The nozzle 80 is rotatable, for example, rotating between a spraying state and a clearing state. The rotatable nozzle 80 may be of the type including a barrel that can rotate within a nozzle guard of the spray gun 24. Rotating the rotatable nozzle 80 reverses the flow of paint through the barrel of the rotatable nozzle 80 to remove blockages. The rotatable nozzle 80 can then be rotated back to its initial position to resume spraying. The rotatable nozzle 80 includes a nozzle 40. It is understood that not all embodiments may include a rotatable nozzle 80, but at least a nozzle 40 will be included.

[0122] In the example shown, spray gun 24 includes a core 82. A spray valve 36 is disposed within the core 82. The core 82 is configured to be mounted to or detached from the gun body 30 as a single unit. In some examples, the core 82 may include a portion of a solenoid 38, such that the portion of the solenoid 38 is mounted and detached from the core 82. Normally, the spray valve 36 within the core 82 is closed to block paint from passing through until the component controller 44 electrically activates the solenoid 38 in response to a trigger 34 actuation, opening the spray valve 36 within the core 82 to begin spraying fluid from the nozzle 40; when the trigger 34 is detected to be released, the component controller 44 stops or reduces the electrical power supplied to the solenoid 38, which causes the spray valve 36 within the core 82 to close. Although spray gun 24 is described as including a core 82, it is understood that not all examples are limited to this. For example, the spray valve 36 may also be supported within the gun body 30, rather than within the core 82.

[0123] Solenoid 38 is operatively connected to spray valve 36 and configured to cause spray valve 36 to move to the open state. It is understood that in some examples, solenoid 38 may be configured to actuate spray valve 36 to both the open and closed states. In other examples, solenoid 38 is configured to actuate spray valve 36 to the open state and have it returned to the closed state by a spring.

[0124] The solenoid 38 includes a coil portion 84. In an example including a core 82, the coil portion 84 may be retained within the gun body 30, while another portion of the solenoid 38 is located within the core 82 and may be removed from the gun body 30 for maintenance, as will be discussed further in this invention. Thus, the solenoid 38 may be distributed among various components, and these components may be separable from each other.

[0125] The conduit 28 is configured to deliver fluid and electrical signals between the module 26 and the spray gun 24. A fluid hose 46 and conductor 48 are disposed within a sheath 50 located between the module 26 and the spray gun 24. The fluid hose 46 is configured to provide a fluid connection between the module 26 and the spray gun 24. The fluid hose 46 delivers pressurized spray fluid from the module 26 to the spray gun 24. The fluid hose 46 is partially located within the gun body 30; more specifically, in this example, the handle 32 helps protect the connector. The spray fluid entering the gun body 30 via the fluid hose 46 will reach the core 82, also located within the gun body 30, via conduits or other channels within the gun body 30.

[0126] Conductor 48 is configured to provide an electrical connection between module 26 and spray gun 24. Conductor 48 can transmit signals and / or electrical energy between component controller 44, sensor 64, solenoid 38, and other electrical components. The electrical connection established by conductor 48 can be within the module body 42 of module 26 and within the gun body 30 of spray gun 24. Sheath 50 surrounds one or more conductors 48 and fluid hose 46, such that components (e.g., conduit 28) extending between module 26 and spray gun 24 appear as a single line.

[0127] The conduit 28 extends from module 26. As mentioned above, the conduit 28 may include a fluid hose 46 and one or more electrical conductors 48 extending from module body 42 to gun body 30. As shown, the conduit 28 extends outward from the interior of module body 42, rather than being connected to the exterior of module body 42 by a connector or other fitting of the conduit 28. This internal location of the connector or other fitting of fluid hose 46 and / or the electrical conductor 48 of conduit 28 helps protect these components from the working environment and further demonstrates that there is no need to disconnect, as the spray gun 24 remains attached to module 26 via conduit 28 for most, if not all, of the lifespan of the spray control components 14 without damaging or establishing a connection between the connector and the electrical connection.

[0128] The conduit 28 extends into the spray gun 24. In the example shown, the conduit 28 extends into the gun body 30 of the spray gun 24. The conduit 28 extends into the gun body 30 such that the connection and / or electrical connection between the spray gun 24 and the conduit 28 is inside the gun body 30, rather than outside the gun body 30.

[0129] The conduit 28 extends from the interior of module 26 to the interior of spray gun 24. The conduit 28 also extends from the interior of module body 42 to the interior of gun body 30. Electrical conductor 48 and fluid hose 46 enter the sheath 50 at a location within module 26. Electrical conductor 48 and fluid hose 46 exit the sheath 50 at a location within spray gun 24. This configuration protects the electrical and fluid connection between module 26 and spray gun 24 because the fluid hose 46 and electrical conductor 48 are disposed within and protected by the sheath 50, which is located outside module body 42 and gun body 30.

[0130] During operation, the spray control assembly 14 is configured to receive pressurized spray fluid through inlet connector 68 and output pressurized spray fluid atomization through nozzle 40. In the example shown, the spray control assembly 14 does not include a pump. No pump or other fluid drive device is located within or supported by module 26. No pump or other fluid drive device is located within or supported by spray gun 24. Instead, the spray fluid is placed under pressure upstream of the spray control assembly 14 and flows under pressure towards and through the spray control assembly 14.

[0131] The spraying fluid enters the spray control assembly 14 through inlet connector 68. The spraying fluid flows through filter 72 to the internal flow channel 66. The spraying fluid flows through the internal flow channel 66 and into the fluid hose 46 through outlet connector 74. The spraying fluid flows through the fluid hose 46 and exits from the fluid hose 46 at a location within the gun body 30. The spraying fluid flows into the core 82. The spray valve 36 is closed, preventing the spraying fluid from flowing downstream through the nozzle 40.

[0132] The user actuates trigger 34, causing spray gun 24 to spray. Sensor 64 detects the actuation of trigger 34. Sensor 64 provides a trigger actuation signal to component controller 44. Component controller 44 causes solenoid 38 to respond to the trigger actuation signal, actuating spray valve 36 from a closed state to an open state. For example, component controller 44 may supply electrical energy to coil portion 84 of solenoid 38. The user releases trigger 34 to stop spraying with spray gun 24. Sensor 64 detects the release of trigger 34. Sensor 64 provides a trigger release signal to component controller 44. It is understood that the trigger release signal can be formed by a signal sent to component controller 44 or by stopping the supply of trigger actuation signal. Component controller 44 responds to trigger release signal, causing spray valve 36 to move from an open state to a closed state. For example, component controller 44 may stop supplying electrical energy to coil portion 84 of solenoid 38, causing coil portion to release control on spray valve 36, causing spray valve 36 to return to a closed state.

[0133] The spray control assembly 14 offers significant advantages. The spray control assembly 14 includes a spray gun 24, which includes a solenoid 38 electrically activated to open a spray valve 36. The solenoid 38 drives the spray valve 36 to the open state, meaning the user does not need to exert physical force to overcome pressure and open the spray valve 36, thus providing a more ergonomic spraying experience and reducing physical fatigue. Module 26 includes a component controller 44 that supplies electrical power to the electrical components of the spray gun 24. Module 26 can further support a power supply 58. As discussed above, module 26 can be supported by the user. The heavier components of module 26 do not need to be supported by the user with one hand within the spray gun 24. Reducing the electrical components on the spray gun 24 reduces the weight of the spray gun 24. Signals generated by the spray gun 24 are provided to module 26, and module 26 returns signals to the spray gun 24 to control the actuation of the spray valve 36.

[0134] In the example shown, component controller 44 is supported by module 26. Mounting component controller 44 on module 26 reduces the number of electrical components on spray gun 24 and lowers the weight of spray gun 24. Furthermore, some users may wish to immerse spray gun 24 in solvent after the painting operation. Mounting component controller 44 on module 26 keeps the electrical control components away from spray gun 24 and solvent, protecting the electrical control components.

[0135] The spray control assembly 14 does not include a pump or other fluid drive device, reducing its weight and simplifying its operation. The spray control assembly 14 receives spray fluid that has been pressurized by an upstream pumping assembly 12, which is fluidly connected to the spray control assembly 14. The spray control assembly 14 can be used with any configuration of the pumping assembly and can be connected to any desired pumping assembly to spray the fluid pumped by that assembly.

[0136] Figure 4A This is an isometric view of spray gun 24. Figure 4B This is an isometric exploded view of spray gun 24. Figure 5 It is along Figure 4A Cross-sectional view taken from the centerline 5-5. Figures 4A to 5 This will be discussed together. As shown in the figure, the gun body 30 includes: an upper housing 31 and a handle 32 of the spray gun 24, a trigger 34, a spray valve 36, a solenoid 38, a nozzle 40, a core 82, a sensor 64, a nozzle 80, and a valve housing 86. The solenoid 38 includes a coil portion 84 and a plunger 88.

[0137] The forward, backward, upward, and downward directions are indicated in several of the accompanying figures. It is understood that the relative positions of the components are shown, particularly... Figure 5As shown, these relative positions relative to each other are claimable. It can be further understood that the relative positions of the components are not intended as limitations, and these components may be positioned in other locations relative to each other.

[0138] The spray gun 24 is configured to receive pressurized spray fluid and atomize the fluid flow as spray fluid through the nozzle 40. The gun body 30 supports the other components of the spray gun 24. An upper housing 31 surrounds the solenoid 38. The upper housing 31 supports the valve housing 86. A handle 32 extends from the upper housing 31. The handle 32 is configured to be held by the user with one hand during operation of the spray gun 24.

[0139] Trigger 34 extends from the front of handle 32. Trigger 34 is configured to be actuated to control the spraying of spray gun 24. Sensor 64 is at least partially disposed within gun body 30. In the example shown, sensor 64 is partially disposed within gun body 30, and a detection element is supported by trigger 34. The detection element may be a magnet, among other options. Pulling trigger 34 causes sensor 64 to detect the detected element, such as a magnetic field generated by a magnet or forming a magnetic field on the detected component, thereby causing sensor 64 to generate a trigger actuation signal. Releasing trigger 34 causes sensor 64 to stop detecting the detected element, thereby causing sensor 64 to generate a trigger release signal, which may be a stop signal for the trigger actuation signal.

[0140] The conduit 28 extends through the underside of the handle 32, such that the distal end 78 of the conduit 28 is located within the spray gun 24. A fluid hose 46 extends from the sheath 50 to the nozzle 90. The nozzle 90 extends from the valve housing 86; it is understood that other configurations are also possible. A conductor 48 extends from the sheath 50 at a location within the spray gun 24. In the illustrated example, a first subset of the conductor 48 extends to the sensor 64 and provides communication between the sensor 64 and the component controller 44. In the illustrated example, a second subset of the conductor 48 extends to the solenoid 38 and provides a signal (e.g., electrical energy) to the solenoid 38 to control its operation. The sheath 50 terminates at a location below the trigger 34. The fluid hose 46 and conductor 48 exit from the location of the sheath 50, which is positioned vertically above the bottom of the handle 32 and vertically below each location where the component exiting the sheath 50 connects to the component of the spray gun 24. In the example shown, the sheath 50 terminates vertically below the sensor 64, the gun connector 90, and the coil portion 84. The sheath 50 terminates vertically below the upper housing 31.

[0141] The valve housing 86 is at least partially disposed within the gun body 30. In the example shown, the housing body 92 of the valve housing 86 is partially located inside and partially outside the gun body 30. The valve housing 86 is disposed within and supported by the upper housing 31. The valve housing 86 is connected to the gun connector 90 and fluidly connected via the gun connector 90 to the fluid hose 46. The valve housing 86 is fluidly connected to the fluid hose 46 to receive pressurized spray fluid from the fluid hose 46. The valve housing 86 is located vertically above the gun handle 32.

[0142] The nozzle assembly 118 is connected to the spray gun 24. The nozzle assembly 118 can be mounted on a nozzle mount 122. In the example shown, the nozzle mount 122 is formed as part of the gun body 30. However, it will be understood that in different examples, the nozzle mount 122 may be formed as part of the valve housing 86. The nozzle mount 122 is formed with external threads and configured to mate with the mounting portion of the nozzle assembly 118 to mount the nozzle housing 120 to the spray gun 24. The nozzle 80 is supported by the nozzle housing 120. The nozzle 80 includes a nozzle 40 configured for atomizing pressurized spray fluid.

[0143] The valve housing 86 includes a housing bore 94 extending along the shaft VA. The housing bore 94 is open, allowing the core 82 to move into the housing bore 94 in the axial direction AD1 along the valve shaft VA and out of the housing bore 94 in the axial direction AD2. In the example shown, the housing bore 94 is open in the axial direction AD2 and closed in the axial direction AD1. The axial direction AD1 is upstream of the shaft VA, and the axial direction AD2 is downstream of the shaft VA.

[0144] Valve housing 86 is configured to connect to fluid hose 46 to receive pressurized spray fluid output through fluid hose 46. Valve housing 86 includes a gun body inlet 96 extending through an inner wall of valve housing 86 and fluidly connected to housing chamber 98. Gun body inlet 96 forms an input port through valve housing 86. Housing chamber 98 is configured to be at least partially defined by valve housing 86. Housing chamber 98 is formed as a radially enlarged portion of housing bore 94. Housing chamber 98 may be at least partially defined by a recess formed within valve housing 86, such as an annular recess. Housing chamber 98 is fluidly connected to fluid hose 46 to receive pressurized spray fluid from conduit 28 and module 26. Housing chamber 98 extends annularly around core 82 to supply spray fluid to core 82.

[0145] The valve housing 86 is configured to receive the cartridge 82, such that the cartridge 82 is at least partially disposed within the valve housing 86. When the cartridge 82 is installed into the spray gun 24, the cartridge 82 is fixed to the valve housing 86, such that the cartridge 82 is mechanically supported by the valve housing 86. Therefore, the cartridge 82 can be considered to be indirectly connected to the gun body 30 through the valve housing 86.

[0146] In the example shown, the core 82 is connected to the valve housing 86 at a fixing 100. The fixing 100 is located on both the core 82 and the valve housing 86 to secure the core 82 to the valve housing 86. In this example, the fixing 100 has a threaded fit between the core body 104 and the housing body 92, but other attachment mechanisms are possible, such as tongue-and-groove structures, interference fit structures, or bayonet connections, among others. Therefore, the core 82 can be rotated to remove it from the housing bore 94 of the valve housing 86, or it can be rotated in the opposite direction to insert it into the housing bore 94 of the valve housing 86.

[0147] In the example shown, a fixing 100 is formed between a housing mount 102 and a core mount 116, the housing mount 102 being formed inside the valve housing 86 and the core mount 116 being formed outside the core body 104. The housing mount 102 has an internal thread within the housing bore 94. The core mount 116 has an external thread on a portion of the core body 104. It is understood that the housing mount 102 and the core mount 116 can be formed with connection structures other than threads, such as protrusions that mate in a bayonet connection, and other connection options. The housing mount 102 and the core mount 116 are configured to overlap axially to secure the core 82 to the valve housing 86 and prevent the core 82 from axially dislodging from the housing bore 94.

[0148] The core 104 includes a fluid housing 106 and a base 108. The fluid housing 106 and base 108 can be connected together in any desired manner. For example, the fluid housing 106 and base 108 can be threaded together. In various other examples, a single housing may be provided, but in this example, the fluid housing 106 forms the front housing portion, primarily for housing the spray valve 36, while in the illustrated example, the base 108 forms the rear housing portion for housing the plunger 88 assembly of the solenoid 38. The base 108 exposes the pressure within the fluid chamber 110 but does not radially surround the fluid chamber 110, and therefore is not considered a pressure vessel. The fluid housing 106 radially surrounds the fluid chamber 110 and can therefore be considered as a pressure vessel.

[0149] In the example shown, base 108 is connected to fluid housing 106 at a threaded engagement. However, it will be understood that base 108 and fluid housing 106 can be connected in any desired manner. In this example, base 108 extends into fluid housing 106 to engage with fluid housing 106. Base 108 extends into fluid housing 106 to form a threaded engagement between base 108 and fluid housing 106. Base 108 includes external threads, and fluid housing 106 includes internal threads. Base 108 extends into fluid housing 106 to engage with fluid housing 106, and base 108 may provide a core 82 with a smaller radial footprint. In the example shown, the engagement between base 108 and fluid housing 106 is located axially between front seal 124 and rear seal 126. The engagement between fluid housing 106 and base 108 is configured to radially overlap with housing chamber 98. The fit between the fluid housing 106 and the base 108 is located axially between the front seal 124 and the rear seal 126, which means that no additional seal is required to form the fit, since any fluid leakage through the fit occurs between the fluid handling areas (e.g., between the housing chamber 98 and the fluid chamber 110).

[0150] An outlet 112 is formed at the downstream end of the core body 104. The core 82 is configured to eject coating fluid through the outlet 112. A port 114 is formed through the core body 104. In the example shown, the port 114 is formed through the fluid housing 106. The port 114 is configured to allow coating fluid to enter the fluid chamber 110 from the housing chamber 98 of the valve housing 86. The port 114 can receive coating fluid from a flow path extending through the valve housing 86. The port 114 forms an inlet to the core 82 and allows coating fluid to enter the core 82. In the example shown, an array of ports 114 is formed around the core 104.

[0151] Port 114 is located axially between front seal 124 and rear seal 126. Front seal 124 and rear seal 126 are located on opposite axial sides of port 114. Front seal 124 and rear seal 126 are located on opposite axial sides of gun body inlet 96 through valve housing 86. Front seal 124 and rear seal 126 are configured to sealably engage with both valve housing 86 and core 104. Front seal 124 and rear seal 126 are configured to axially seal housing chamber 98. Front seal 124 and rear seal 126 seal core 82 around port 114 so that all spray fluid enters and passes through port 114 and finally enters fluid chamber 110. In the example shown, front seal 124 is disposed on and supported by fluid housing 106, and rear seal 126 is disposed on and supported by base 108. The front seal 124 and / or the rear seal 126 may be formed of an O-ring, for example, of rubber or other types of flexible sealing material.

[0152] A spray valve 36 is disposed within the core body 104. The spray valve 36 includes a valve seat 128, such as a ceramic or carbide ring, which in this example mates with a ball 130. In the illustrated example, the ball 130 is configured to mate with the valve seat 128, this engagement closing the spray valve 36 but moving the ball 130 away from the valve seat 128 to allow spray fluid within the fluid chamber 110 to flow out through the outlet 112. The spray valve 36 is actuated between an open and closed state; in the open state, the fluid chamber 110 is fluidly connected to the outlet 112, allowing spray fluid to flow through the outlet 112 to the nozzle 40; in the closed state, the fluid chamber 110 is fluidly disconnected from both the outlet 112 and the nozzle 40.

[0153] The spray valve 36 is located at the front end of the core 82. In the example shown, the spray valve 36 is located axially outward of the valve housing 86. The spray valve 36 is positioned such that the valve housing 86 does not radially overlap with the mating of the ball 130 and the valve seat 128. The spray valve 36 is located in front of the handle 32. The spray valve 36 is located in front of the core 82. The spray valve 36 is located on the core at the end opposite to the plunger 88. The chamber containing the spray valve 36 is axially separated from the chamber containing the plunger 88 by the base 108 and the dynamic seal 136.

[0154] Rod 132 is configured to connect spray valve 36 to solenoid 38, such that solenoid 38 can actuate spray valve 36. Rod 132 can be a wire or other rigid, high-strength component; in this example, rod 132 extends from plunger 88 of solenoid to ball seat 134. Ball 130 is mounted on ball seat 134.

[0155] A dynamic seal 136 is located around the rod 132. The dynamic seal 136 separates the high pressure within the fluid chamber 110 from the drying components, such as the solenoid 38. The dynamic seal 136 may be a compressed rubber component surrounding the rod 132 to prevent spray fluid from leaking out from around the rod 132. In the example shown, the dynamic seal 136 is supported by a base 108. The dynamic seal 136 extends at least partially within the base 108 such that the base 108 radially overlaps with the dynamic seal 136. The dynamic seal 136 is sealingly engaged with the rod 132, and the rod 132 can slide relative to the dynamic seal 136 during actuation of the spray valve 36.

[0156] Spring 138 is disposed within fluid chamber 110. Spring 138 is configured to bias spray valve 36 to a closed state. Spring 138 pushes spray valve 36 to the closed state. Spring 138 presses ball 130 against valve seat 128 to close spray valve 36 and maintain spray valve 36 in the closed state. In the illustrated example, spring 138 is disposed within fluid chamber 110 such that spring 138 is exposed to the spray fluid, but it should be understood that in various other examples, spring 138 may be disposed outside fluid chamber 110. In some examples, spring 138 is a drying component not exposed to the spray fluid. In the illustrated example, spring 138 radially surrounds rod 132 such that rod 132 extends within and through spring 138. Spring 138 is coaxially disposed with rod 132 on valve shaft VA. In the illustrated example, spring 138 is coaxially disposed with spray valve 36 and outlet 112. Spring 138 engages with base 108 and ball seat 134 to press spray valve 36 into the closed state.

[0157] The solenoid 38 is completely housed within the gun body 30, and the core 82 is mounted to the valve housing 86. The solenoid 38 is also completely housed within the upper housing 31, and the core 82 is mounted to the valve housing 86. In the illustrated example, a portion of the solenoid 38 is supported by the valve housing 86, such that this portion of the solenoid 38 remains mounted to the valve housing 86 even after the core 82 is removed. The solenoid 38 is configured to drive the spray valve 36 within the core 82. The solenoid 38 includes a coil portion 84 and a plunger 88. The plunger 88 can be considered as the armature forming the solenoid 38. In the illustrated example, the coil portion 84 is supported by the valve housing 86. The coil portion 84 remains mounted within the gun body 30 even after the core 82 is removed. The coil portion 84 forms the stator of the solenoid 38.

[0158] Coil 176 is located within coil portion 84. Coil 176 generates an electromagnetic field by allowing current to flow through one or more wound conductors (e.g., a multi-turn coil formed by one or more copper conductors). The conductors can be in the form of round wires, flat strips, etc. The electromagnetic field can attract or repel a magnetically sensitive material. This magnetically sensitive material is located within plunger 88 and / or forms a portion of plunger 88. For example, plunger 88 can be formed of an ferrous material that is attracted by the electromagnetic field generated by coil 176. Plunger 88 can contain a soft magnetic metal that can be easily magnetized and demagnetized under low magnetic fields. When coil 176 is electrically activated by current, plunger 88 can be pulled toward and / or through the cavity of coil 176. Plunger 88 may additionally or additionally include a magnet. This attraction overcomes the force of spring 138 within cylinder 82 to open spray valve 36.

[0159] The coil portion 84 extends in a ring around the plunger 88. In the example shown, the coil portion 84 radially overlaps with a portion of the plunger 88, radially overlaps with a portion of the core body 104, and axially overlaps with the plunger 88. In the example shown, the coil 176 does not axially overlap with the plunger 88.

[0160] The solenoid 38 can actuate the valve 36 via a rod 132 extending from within the fluid chamber 110 and passing through the dynamic seal 136. The rod 132 can be directly attached to the plunger 88 by adhesive, clamping, crimping, spinning, or other means. In the example shown, the rod 132 passes through the plunger 88. The rod 132 can extend axially through the plunger 88 entirely along the axis VA. In the example shown, the rod 132 extends axially through the plunger 88 entirely, such that the rod 132 extends forward and backward of the plunger 88. However, in various other examples, the rod 132 does not extend backward of the plunger 88. In some examples, the rod 132 terminates within the plunger 88.

[0161] The core 82 includes a portion of the solenoid 38. The core 82 includes a valve 36 and a plunger 88, but in this example, it does not include a coil, such as coil 176. The plunger 88 is located within a plunger shroud 140. The plunger shroud 140 may be part of the core body 104. In the example shown, the plunger shroud 140 is formed as part of the base 108. The plunger shroud 140 extends rearward beyond the plunger 88, such that the plunger 88 is retained within the plunger chamber 142 of the plunger shroud 140. This configuration is advantageous because the plunger 88 remains protected within the plunger shroud 140 when the core 82 is outside the valve housing 86. This risk could include the rod 132 bending if the plunger 88 is exposed. In some examples, the plunger 88 may partially extend outside the plunger shroud 140 when pulled by coil 176, for example, in examples excluding end cap 144. In various other examples, the plunger 88 remains within the plunger housing 140 throughout its entire stroke range, preventing it from extending beyond the housing. Therefore, the plunger 88 reciprocates within the housing 140. The outer shape of the plunger 88 can be cylindrical, and the plunger chamber 142 can also be cylindrical, resulting in only a small air gap between the plunger 88 and the housing 140. Other shapes, such as squares and hexagons, as well as other options, are also possible.

[0162] A plunger 88 is disposed within a plunger chamber 142 of the core body 104. In the illustrated example, the plunger chamber 142 is closed in both the AD1 and AD2 axial directions. A portion of the base 108 and a dynamic seal 136 are disposed axially between the plunger chamber 142 and the fluid chamber 110. In the illustrated example, an end cap 144 blocks the rear end of the chamber 142. The end cap 144 closes the chamber 142 in the AD1 axial direction, and the base 108 closes the chamber 142 in the AD2 axial direction. The end cap 144 is disposed at the rear end of the plunger chamber 142 to prevent contact damage and contamination of the plunger 88. The end cap 144 may seal the chamber 142 or may be ventilated. The end cap 144 may be disc-shaped. The end cap 144 may have the same outer diameter as the portion of the base 108 that radially defines the plunger chamber 142. The end cap 144 may be forged, press-fitted, welded, or threaded to the base 108, among other connection options. Understandably, in various other examples, the core 82 does not include the end cap 144, and the plunger chamber 142 can be opened along the valve shaft VA.

[0163] As shown, solenoid 38 can be disassembled into two solenoid assemblies based on the removal of core 82. Specifically, plunger 88 is part of core 82, and core 82 can be removed and replaced with other different but mechanically identical cores 82 to operate the same coil 176. Coil portion 84 is part of valve housing 86 and remains mounted to other components of spray gun 24. Coil portion 84 operates multiple different plungers 88 of multiple different cores 82. Core 82 is expected to be replaced during the service life of spray gun 24, while coil portion 84 will remain unchanged throughout the service life of spray gun 24 or at least throughout the service life of multiple cores 82. Therefore, each time core 82 is replaced, a portion, but not all, of solenoid 38 will also be replaced. In various other examples, solenoid 38 as a whole can be part of core 82, such that each time core 82 is replaced, solenoid 38 as a whole is replaced. It should be noted that incorporating plunger 88 as part of core 82 improves equipment reliability because the distance between plunger 88 and spray valve 36 is crucial, as solenoid 38 has a short stroke length, and spray valve 36 also relies on a short stroke length. Therefore, the position of plunger 88 must be within a very small tolerance range relative to spray valve 36. This tolerance range can be optimally controlled in the manufacturing environment rather than by the user, for example, by screwing core 82 into housing bore 94. For instance, if the user does not screw core 82 in at the proper angle, solenoid 38 may not pull out the appropriate distance to drive spray valve 36. However, the electromagnetic field generated by coil 176 can be wide, allowing for more operational possibilities in the position of plunger 88 relative to coil 176, provided the distance between plunger 88 and spray valve 36 is fixed and known, such as when set under factory conditions via rod 132 connection.

[0164] The core body 104 limits the stroke distance of the plunger 88, thereby setting the opening distance of the spray valve 36. The opening distance of the spray valve 36 (in the illustrated example, the axial distance from which the ball 130 disengages from the valve seat 128) is set within a very small tolerance range to properly control the fluid flowing through the outlet 112 and downward through the nozzle 40 to produce an atomized fluid spray. An opening distance that is too large or too small will result in low-quality spraying. In the illustrated example, the end cap 144 limits the stroke of the plunger 88, thereby limiting the opening distance of the spray valve 36.

[0165] In the example shown, end cap 144 includes a recess 146. Recess 146 is configured such that the end of rod 132 extending through plunger 88 can extend into end cap 144 to radially overlap with the structure of end cap 144. In some examples, rod 132 extends into but does not contact end cap 144, which protects rod 132 from bending upon contact with end cap 144. Recess 146 allows rod 132 to extend fully through plunger 88 for securing to the plunger 88 on the rear side of plunger 88. End cap 144 may define a travel limit for plunger 88 and thus a limiting opening distance for spray valve 36, while rod 132 extending beyond plunger 88 is received in a portion of end cap 144 to prevent bending of rod 132.

[0166] The spray gun 24 is configured for rapid and ergonomic spraying. Pulling the trigger 34 generates a trigger drive signal, causing electrical energy to be delivered to the coil 176. The coil 176 generates an electromagnetic field that pulls the plunger 88 in the axial AD1 direction. The plunger 88 displaces the spray valve 36 into the open state, allowing the spray fluid to flow downstream through the outlet 112 and then be atomized through the nozzle 40. The plunger 88 moves the spray valve 36 via a rod 132. The rod 132 is connected to the plunger 88 and the ball 130 to pull the ball 130 away from the valve seat 128. The trigger 34 is not mechanically connected to the spray valve 36 to drive it. The user does not need to overcome the pressure within the fluid chamber 110 to brake the spray valve to the open state, reducing user fatigue and improving the efficiency of the spraying operation.

[0167] The core 82 can be mounted to and removed from the valve housing 86 as a separate unit. The core 82 is an integral assembly that includes, in the same component, the spray valve 36 and its actuator (formed by a plunger 88 in the illustrated example), which are mounted and removed together. The actuators for opening the spray valve 36 (such as plunger 88) and closing the spray valve 36 (such as spring 138) are both included in the integral assembly of the core 82. The core 82 includes all components that mechanically drive the spray valve 36 to the open and closed states. In the illustrated example, the components that electromagnetically drive the spray valve 36 remain mounted to the valve housing 86 after the core 82 is removed.

[0168] The core 82 can be installed onto and removed from the valve housing 86 solely by operating the core 82. After removing the nozzle assembly 118, the core 82 can be installed into and / or removed from the housing bore 94 without operating other parts of the spray gun 24. There is no need to move or operate the trigger 34 to form a mechanical engagement with any of the actuators of the spray valve 36. Instead, all mechanical engagements for displacing the spray valve 36 are part of the integral assembly of the core 82. In the example shown, all mechanical actuators for displacing the spray valve 36 (such as the spring 138 and the plunger 88) are housed within the core body 104. These mechanical actuators are enclosed within the core body 104, preventing access to these components from the outside of the core body 104 during spraying operations to cause actuation of the spray valve 36.

[0169] All mechanical actuators, as part of the core 82, reduce wear on the flow control components of the core 82 and provide a more robust and durable construction. The mechanical actuators are coaxially mounted on the valve shaft VA and housed within the core body 104. The coaxial alignment of the mechanical actuators ensures that they do not form a mechanical engagement with the core 82 that could exert lateral loads on the rod 132 during core 82 installation.

[0170] The spray gun 24 is provided with a balancing structure to allow for easy use. A cartridge 82 spans the handle 32, extending forward and rearward, at least partially, of the handle 32. A valve housing 86 spans the handle, extending forward and rearward of a portion of the handle 32. When the user holds the handle 32, the valve housing 86 spanning the handle 32 and the cartridge 82 balance the spray gun 24.

[0171] The mechanical actuators (such as spring 138 and plunger 88) and electromechanical actuators (such as coil portion 84) of the spray valve 36 are housed within the support 154 of the gun body 30. A fluid hose 46 and a conductor 48 connected to a solenoid 38 pass through the gun handle 32. Spraying fluid enters the valve housing 86, and the conductor 48 is connected to the solenoid 38 at a location within the support 154.

[0172] When the core 82 is installed into the valve housing 86, the core 82 extends from inside the gun body 30 to the outside of the gun body 30. When the core 82 is installed into the valve housing 86, the core 82 extends from inside the valve housing 86 to the outside of the valve housing 86. The core 82 extends out of the valve housing 86 so that the core 82 can be accessed from the outside of the valve housing 86, for example by means of a tool (such as a wrench), through a partial connection with the core body 104 on the outside of the valve housing 86, to form or release a static fit formed at the fixed 100.

[0173] Figure 6A This is a cross-sectional view showing the fluid treatment component of the spray gun 24. Figure 6B yes Figure 6A The diagram shows an exploded view of the component. Figure 6A and Figure 6B Continue to refer to Figures 4A to 5 The valve housing 86 includes a fluid receiver 148, a coil housing 150, and a solenoid end cap 152. The fluid receiver 148 is fluidly connected to a fluid hose 46 to receive sprayed fluid from a conduit 28. The fluid receiver 148 is configured to receive and connect to a core 82. A fixing 100 is formed between the core body 104 and the fluid receiver 148. In the illustrated example, a housing aperture 94 extends axially entirely through the fluid receiver 148. In the illustrated example, the housing aperture 94 is partially formed within the fluid receiver 148 and partially formed within the coil housing 150. When the core 82 is mounted to the valve housing 86, a base 108 of the core 82 extends into the coil housing 150 to radially overlap with the coil portion 84.

[0174] The coil housing 150 is connected to the fluid receiver 148. In the illustrated example, the support 154 of the coil housing 150 includes a coil mounting base 156, a housing portion 158a, and a housing portion 158b. The coil mounting base 156 is configured to partially mate with the fluid receiver 148 to mount the coil housing 150 to the fluid receiver 148. In the illustrated example, the coil mounting base 156 is configured to mate with the fluid receiver 148 at a threaded connection. In the illustrated example, the coil mounting base 156 includes an external thread configured to mate with an internal thread formed within the fluid receiver 148. Although the illustrated coil housing 150 is connected to the fluid housing 106 via a threaded connection, it is understood that not all examples are limited to this. For example, the coil housing 150 may be connected to the fluid housing 106 by forging, press fitting, welding, or other means.

[0175] In the illustrated example, coil mount 156 extends into fluid receiver 148 for connection to fluid receiver 148. Coil mount 156 extends into fluid receiver 148 such that coil housing 150 and fluid receiver 148 radially overlap at their mating point. In the illustrated example, a portion of coil housing 150 is radially located within a portion of fluid receiver 148, such that a radial line extending from valve shaft VA first passes through coil housing 150 and then through fluid receiver 148 at its intermediate mating point. Coil mount 156 extends into valve housing 86 for connection to valve housing 86, providing a smaller footprint for core 82 and allowing coil 176 to be positioned closer to plunger 88 for more efficient actuation of plunger 88.

[0176] A housing portion 158a extends from the coil mounting base 156. The housing portion 158a projects radially outward from the coil mounting base 156. In the illustrated example, the housing portion 158a projects radially outward from a portion of the fluid receiver 148. Therefore, the coil housing 150 can simultaneously overlap the fluid receiver 148 radially and axially. The housing portion 158a can abut against the axial end face of the fluid receiver 148. The coil housing 150 can be configured such that a portion of the coil housing 150 is directly disposed radially inward of the structure of the fluid receiver 148, and a portion of the coil housing 150 extends radially outward from the structure of the fluid receiver 148.

[0177] Housing portion 158b extends from housing portion 158a. Housing portion 158b extends axially outward from housing portion 158a. In some examples, housing portion 158b may be configured to be orthogonal to housing portion 158a, but it is understood that not all examples are constrained in this way. Housing portion 158b extends to the rear end of valve housing 86.

[0178] In the example shown, coil portion 84 is disposed in the overlapping area of ​​housing portion 158a and housing portion 158b. Coil portion 84 overlaps radially with housing portion 158b. Coil portion 84 overlaps axially with housing portion 158a. In the example shown, coil portion 84 overlaps axially with fluid receiver 148.

[0179] An outer groove 160 is formed at the mating point of housing portions 158a and 158b. The outer groove 160 extends in a completely annular manner around axis VA. A coil portion 84 is disposed within the outer groove 160. The coil portion 84 extends in a completely annular manner around axis VA. The coil portion 84 is disposed within the outer groove 160 such that the coil portion 84 is axially and radially positioned relative to the housing bore 94, and consequently relative to the plunger 88 that is installed and removed with the core 82. However, it is understood that the coil housing 150 receives the coil portion 84 within the outer groove 160 regardless of whether the spray valve 36 can be installed into the core 82. In some examples, the spray valve 36 is supported by a valve housing 86 but is not disposed within the removable core 82.

[0180] In the illustrated example, solenoid end cap 152 is connected to support 154 of coil housing 150. Solenoid end cap 152 can be considered as part of forming valve housing 86. In the illustrated example, solenoid end cap 152 forms part of coil housing 150. Solenoid end cap 152 is disposed at the shaft end of housing bore 94 opposite mounting opening 162, through which core 82 enters and exits housing bore 94. In the illustrated example, solenoid end cap 152 extends to a second end closing housing bore 94, opposite the first end forming mounting opening 162. In the illustrated example, solenoid end cap 152 extends such that shaft VA extends through the structure of solenoid end cap 152. Solenoid end cap 152 can be coaxially disposed on valve shaft VA together with plunger 88 and rod 132. When core 82 is mounted to valve housing 86, solenoid end cap 152 can be coaxially disposed with core 82.

[0181] In the example shown, the solenoid end cap 152 is mounted to the support 154 via a mounting flange 164, and the solenoid end cap 152 is held by a receiver 166 of the support 154. For example, the solenoid end cap 152 may be disposed on the coil housing 150, and the receiver 166 may be bent to axially overlap with the radially outer portion of the mounting flange 164 to secure the solenoid end cap 152 to the support 154. However, it is understood that the solenoid end cap 152 may be mounted to the coil housing 150 in any desired manner, such as threaded engagement, forging, welding, brazing, etc.

[0182] In the example shown, the solenoid end cap 152 includes an inner recess 168. The inner recess 168 mates with the coil portion 84 radially inward. The inner recess 168 is formed at the mating point of the shoulder 170 and the recess body 172. The recess body 172 extends to radially overlap with the coil portion 84. The recess body 172 may radially overlap with one or more coils 176 of the coil portion 84. The shoulder 170 is disposed between the mounting flange 164 and the recess body 172. The shoulder 170 extends to axially overlap with the coil portion 84. The shoulder 170 may axially overlap with the coils 176 of the coil portion 84.

[0183] The coil portion 84 is clamped and received between the outer groove 160 and the inner groove 168. The outer groove 160 and the inner groove 168 are radially and axially positioned relative to the shaft VA and the housing bore 94. The stator portion of the solenoid 38 is axially clamped between the outer groove 160 and the inner groove 168. The outer groove 160 opens radially inward and axially in the AD1 direction. The inner groove 168 opens radially outward and axially in the AD2 direction. The outer groove 160 and the inner groove 168 are opposite each other to clamp the coil portion 84 between them.

[0184] In the illustrated example, electrical connector 174 extends through solenoid end cap 152 and connects to coil 176 to provide an electrical signal to coil 176. In the illustrated example, electrical connector 174 extends axially to connect between coil 176 and conductor 48. However, it will be understood that in various other examples, electrical connector 174 may extend radially, for example, through support 154. Electrical connector 174 is spaced apart from all fluid passages within valve housing 86 and core 82 in the axial AD1 direction, isolating the electrical connection between conductor 48 and coil portion 84 from the sprayed fluid.

[0185] The core 82 can be installed onto and removed from the valve housing 86. This removal is achieved by rotating the core 82 off the valve housing 86. When the core 82 is installed onto the valve housing 86, a housing bore 94, at least partially located within the core 82, is coaxially aligned with the core 82 during installation and removal. The core 82 can be removed for maintenance and / or replacement. Identical or different cores 82 can then be inserted into the housing bore 94.

[0186] In some examples, the valve housing 86 may define the mounting position of the core 82. For example, the core 82 may be configured to extend into the valve housing 86 until a portion of the valve housing 86 prevents further movement of the core 82 in the axial AD1 direction. In the example shown, the solenoid end cap 152 is configured to limit the displacement of the core 82 into the housing bore 94 in the axial AD1 direction. The bottom of the end cap 144 may be on the recessed body 172 of the solenoid end cap 152 to limit further displacement of the core 82 into the housing bore 94, which indicates to the user that the core 82 is fully and correctly installed.

[0187] The spray gun 24 offers significant advantages. The core 82 can be mounted as a single integral assembly to and removed from the valve housing 86. The core body 104 simultaneously supports the spray valve 36 and the plunger 88, whereby the spray valve 36 controls the flow of spray fluid through the core body 104, and the plunger 88 is electromagnetically actuated to drive the spray valve 36. The plunger 88 can be fixed relative to the spray valve 36, thus allowing it to be installed and removed together with the spray valve 36. The plunger 88 can be fixed in position along the rod 132 to set the opening distance of the spray valve 36, providing a set opening distance for each actuation of the spray valve 36, thereby providing more stable and higher-quality spraying.

[0188] In the example shown, the plunger 88 is at least partially disposed within the core body 104. The core body 104 protects the plunger 88 from unintended contact damage. The core body 104 shields the plunger 88 and prevents the rod 132 from bending due to the plunger's torsion.

[0189] In the example shown, the plunger 88 is fully housed within the core body 104, such that the structure in which the plunger 88 moves relative to the spray valve 36 during actuation forms an axial and radial overlap. The end cap 144, which overlaps axially with the plunger 88, sets the displacement distance of the plunger 88, and consequently, the opening distance of the spray valve 36. Setting the displacement distance of the plunger 88 by the core body 104 provides a consistent stroke distance for the plunger 88 and, consequently, for each actuation of the spray valve 36.

[0190] The stator of solenoid 38 is assembled by stacking the components axially along the valve shaft VA. Coil housing 150 extends axially into the fluid receiver 148 for connection. Coil housing 150 is radially positioned inside the fluid receiver 148 at a connection point that connects coil portion 84 to the fluid receiver 148, which supports the core 82 and consequently the plunger 88, contributing to a more compact construction of the core 82. Core body 104 can be tightly fitted into the portion of coil housing 150 defining housing bore 94. Coil portion 84 can be radially positioned closer to the valve shaft VA, and consequently closer to the plunger 88, providing more efficient operation.

[0191] The coil portion 84 is axially clamped between the outer groove 160 and the inner groove 168. The coil portion 84 can slide axially into the outer groove 160 to be positioned within it. Subsequently, the solenoid end cap 152 can be assembled to the support body 154 such that the inner groove 168 receives a portion of the coil portion 84. The coil portion 84 is axially clamped within the opposing groove. The coil portion 84 is also radially clamped by the opposing groove. Axial and radial clamping of the coil portion 84 positions the coil portion 84 relative to the housing bore 94, thereby positioning it relative to the plunger 88 when the core 82 is installed into the valve body 86.

[0192] The coil portion 84 is clamped between the support body 154 and the solenoid end cap 152. The solenoid end cap 152 is axially movable relative to the support body 154 to engage with it. The solenoid end cap 152 supports the coil portion 84 axially and radially. The axial stacking of the stator (such as the coil portion 84) and stator supports (such as the coil housing 150) provides a compact configuration for the stator portion of the solenoid 38. This configuration allows for a smaller gun body 30 volume for enclosing multiple sections of the valve housing 86, thereby allowing for a more ergonomic and easier-to-operate spray gun 24.

[0193] Figure 7A It is an isometric view of the core 82 with a positioning element 178 for positioning the plunger 88 along the rod 132. Figure 7B It is along Figure 7A An isometric cross-section taken from the centerline BB. Figure 7A and Figure 7B We will discuss this together.

[0194] The plunger 88 can be fixed at a position along the rod 132 to set the opening distance of the spray valve 36. The plunger 88 can be fixed at a specific position along the rod 132, which determines the opening distance of the spray valve 36. The plunger 88 can be fixed at a position along the rod 132 at a certain distance from the downstream end of the core body 104, and this distance sets the opening distance of the spray valve 36.

[0195] In the example shown, rod 132 extends axially beyond plunger 88. This configuration allows plunger 88 to be secured along rod 132 from the back side of plunger 88, thereby setting the opening distance of spray valve 36. For example, the end of rod 132 can be secured to plunger 88 by welding, forging, brazing, or other methods. For example, the end of rod 132 can be secured to the end of plunger 88. In some examples, the exposed portion of rod 132 extending beyond plunger 88 can be secured to plunger 88. Rod 132 may still not extend beyond plunger cover 140. Welding can be performed around the circumference of rod 132 and along the edge of the opening on plunger 88 defining the extension of rod 132 through plunger 88. In this way, plunger 88 can have a metal cover that surrounds the magnetically active components of plunger 88, and welding will be performed on this metal cover.

[0196] The plunger 88 is fixed along the rod 132 to set the opening distance of the spray valve 36. As discussed above, the core 82 can be configured such that the end cap 144 limits the stroke of the plunger 88. The plunger 88 can be fixed in position relative to the inner surface 180 of the end cap 144 to set the allowable stroke distance of the plunger 88, thereby setting the opening distance of the spray valve 36.

[0197] The plunger 88 is attached to the rod 132 as part of the manufacturing and assembly process. The plunger 88 is secured to the rod 132 by welding the rod 132 to it. Other fastening methods, such as threaded connections, adhesive bonding, rotary forging, or press-fitting, and other options, can also be used to secure the plunger 88 to the rod 132. In various examples, the rear end of the rod 132 is attached to the rear end of the plunger 88. Specifically, before installing the end cap 144, the rear end of the rod 132 can be welded to the rear end of the plunger 88, and other connection options can be used. The end cap 144 can then be secured to the core body 104. However, in various examples, the core 82 does not include the end cap 144.

[0198] During manufacturing, the plunger 88 can be positioned at a specific location along the rod 132 before being fixed to it. To position the plunger 88 at the specific location along the rod 132, the plunger 88 can be moved along the rod 132 until it is positioned at the specific location. To achieve the desired spacing, the plunger 88 can be set on an indexing fixture, and then the rod 132 can be fixed to the plunger 88. When the valve is closed, the position of the plunger 88 on the rod 132 can be set relative to the position of the plunger cover 140, which ensures that the plunger 88 is in the desired position to be affected by the electromagnetic field of the coil and to open the spray valve to the required opening distance.

[0199] In the example shown, plunger 88 is first positioned on rod 132, and then positioning element 178, which is considered to form an indexing member, is positioned at the open end of plunger chamber 142. Positioning element 178 includes or is formed of one or more magnets that attract plunger 88 into contact with positioning element 178. Positioning element 178 includes a stop 182 and a support post 184. Stop 182 cooperates with core body 104 to position positioning element 178 relative to core body 104. Support post 184 extends from stop 182 and extends into plunger guard 140 at a distance corresponding to the required stroke distance of plunger 88. Stop 182 can thus set the spacing distance for positioning plunger 88. Once plunger 88 is attracted into contact with stop 182, rod 132 is secured to plunger 88, thereby securing plunger 88 in the desired position along rod 132. For example, the rod 132 and the plunger 88 can be accessed through a locating hole 186, which extends through a locator 178 to secure the rod 132 and the plunger 88 together. In an example including an end cap 144, the locator 178 can then be removed and the end cap 144 assembled onto the core 82.

[0200] The fixed plunger 88 provides a significant advantage in setting the opening distance of the spray valve 36. The plunger 88 is the mechanical actuator of the spray valve 36, used to drive the spray valve 36 to the open state. Setting the plunger along the rod 132 provides a known and controllable opening distance for the spray valve 36, which remains constant throughout the entire operating life of the core 82. The plunger 88 remains fixed to the rod 132 and is installed and removed together with the core 82. Positioning the plunger 88 on the rod 132 allows for setting the position of the plunger 88 relative to the spray valve 36 for mechanical actuation, or it can be positioned within the core body 104, enabling efficient positioning of the plunger 88 relative to the coil portion 84 when the core 82 is installed in the valve housing 86.

[0201] Figure 8 yes Figure 6A A magnified view of detail 8. Figure 9 This is a schematic diagram of the direction of electromagnetic flux flow. Figure 8 and Figure 9 We will discuss this together and will continue to cite it. Figures 1 to 7B .

[0202] The plunger 88 is offset from the coil 176. In the example shown, the plunger 88 is offset from the coil 176 both radially and axially. A first portion of the plunger 88 radially overlaps with the coil 176, while a second portion of the plunger 88 does not radially overlap with the coil 176. The second portion of the plunger 88 is closer to the spray valve 36 than the first portion. If this were reversed, such that the portion of the plunger 88 that does not radially overlap with the coil 176 is located on the opposite side of the coil 176, which is farther from the spray valve 36, then the rod 132 or similar structure would need to span the entire length of the coil 176, resulting in a less compact assembly and a more difficult-to-manage spray gun 24.

[0203] The plunger 88 is radially offset from the coil 176. This radial offset creates an air gap that disrupts the flow of electromagnetic flux. A plunger shield 140 extends into the solenoid gap 188 formed between the plunger 88 and the coil portion 84. The plunger shield 140 includes a flux region 190 and a reluctance region 192. The flux region 190 is formed of a first-class material, such as a ferromagnetic material, or other material that can attract and guide the flow of electromagnetic flux. The reluctance region 192 is formed of a second-class material, such as a non-ferromagnetic material, or other material that cannot attract and guide the flow of electromagnetic flux. It is understood that both regions are tubular, with the plunger 88 moving radially inward within the regions and the coil housing 150 moving radially outward within them. In this example and various other examples, these different regions are formed by different structures. For example, the flux region 190 is formed of steel, such as stainless steel, while the reluctance region 192 is formed of aluminum, polymer, or other non-ferrous metals.

[0204] In the example shown, the flux region 190 is shown as being formed by a root 194. The root 194 may contact the base 108 such that both portions are formed from the same piece of material. Therefore, ferrous material may axially overlap with the plunger 88 between the plunger 88 and the spray valve 36. This ferrous material may axially overlap with the plunger 88 on the upstream side. In some examples, a continuous block of ferrous material may overlap the plunger 88 radially and axially. In some examples, the flux region 190 may not radially overlap with the coil 176. In some examples, the flux region 190 may not radially overlap with the coil portion 84. The axial spacing between the flux region 190 and the coil portion 84 facilitates the flow of electromagnetic flux downstream to displace the plunger 88. The axial spacing between the flux region 190 and the coil portion 84 is opposite to the axial direction of the plunger 88 during the opening of the spray valve 36.

[0205] The reluctance region 192 is shown as being formed by an extension 196. In the example shown, the extension 196 is connected to the root 194. Specifically, the extension 196 is only connected to the root 194 and is not connected to other parts of the core body 104. The extension 196 may be formed of aluminum, polymer, zinc, or other non-ferrous metal materials. In the example shown, the extension 196 is suspended from the root 194. The extension 196 extends to radially overlap with the coil 176. The extension 196 partially overlaps radially with the coil portion 84 and partially does not overlap radially with the coil portion 84.

[0206] The extension 196 mates with the root 194 at a junction 198. In the example shown, the extension 196 is radially positioned outside the root 194 at the junction 198, but it should be understood that in other examples, the root 194 may be radially positioned outside the extension 196. The junction 198 is partially formed of ferrous material and partially of non-ferrous material. In the example shown, the junction 198 does not radially overlap with the coil portion 84.

[0207] A plunger 88 is disposed within a plunger chamber 142. During the actuation of the spray valve 36, the plunger 88 is configured to reciprocate within the plunger chamber 142. The plunger chamber 142 is partially defined by a magnetic flux region 190 and partially by a magnetic resistance region 192. The plunger chamber 142 is partially defined by a root 194 and partially by an extension 196. The axial direction of the plunger chamber 142 is defined by a ferrous material (such as the material of the end cap 144 and the base 108), and the radial direction is defined by both ferrous materials (such as the material forming the magnetic flux region 190) and non-ferrous materials (such as the material of the magnetic resistance region 192). When the spray valve 36 is open, the plunger 88 is electromagnetically moved in the axial direction AD1, and the radial overlap area between the plunger 88 and the magnetic resistance region 192 increases accordingly. When the spray valve 36 is closed, the plunger 88 is moved in the axial direction AD2, and the radial overlap area between the plunger 88 and the magnetic resistance region 192 decreases accordingly. When the spray valve 36 is open, the plunger 88 is moved electromagnetically along the axial direction AD1, and the radial overlap area between the plunger 88 and the magnetic flux region 190 increases accordingly. When the spray valve 36 is closed, the plunger 88 moves along the axial direction AD2, and the radial overlap area between the plunger 88 and the magnetic flux region 190 decreases accordingly.

[0208] The presence of a flux region 190 and a reluctance region 192 guides the flow of electromagnetic flux, enhancing the operation of the solenoid 38. The necessity of this guiding structure stems from the presence of a plunger shield 140, which provides mechanical protection when the plunger 88 is not installed within the spray gun 24, and provides a solenoid gap 188 between the coil 176 and the plunger 88, in which the electromagnetic field can reduce energy. The plunger shield 140 can be entirely formed of ferromagnetic material, which helps guide the flow of electromagnetic flux; however, ferromagnetic portions of the plunger shield 140 may be counterproductive. Specifically, the region of the plunger shield 140 directly radially located between the plunger 88 and the coil 176 provides an electromagnetic flux short circuit, while the outward axial projection of the magnetic field promotes better electromagnetic interaction with the entire plunger 88. Therefore, the magnetic reluctance region 192 is formed of a material that does not support electromagnetic flux, while the material forming the magnetic flux region 190 outside the radially overlapping region of the coil 176 and the plunger 88 is formed of a ferromagnetic material to guide the electromagnetic flux out along the non-overlapping region.

[0209] In the example shown, the support 154, the solenoid cap 152, the base 108 including the root 194, and the end cap 144 can all be formed of a ferromagnetic material to support the flow of electromagnetic flux. Figure 9 As shown, gaps appear in the flow of electromagnetic flux (indicated by arrow EF) along the reluctance region 192. These gaps can be formed as air gaps or filled by extensions 196 made of non-ferromagnetic material. As shown, the electromagnetic flux within the plunger 88 extends axially outward and toward the flux region 190, allowing it to interact with a greater area of ​​the plunger 88 before being conducted back to the coil 176 via the ferromagnetic material of the coil housing 150. If the reluctance region 192 were filled with ferromagnetic material in the same manner as the flux region 190, the electromagnetic flux projected along the flux region 190 would be significantly reduced, and the electromagnetic flux flowing through the entire plunger 88 would also be reduced accordingly, thereby degrading the performance of the solenoid 38.

[0210] The flux region 190 and the reluctance region 192 offer significant advantages. The reluctance region 192 does not support the flow of electromagnetic flux, causing the electromagnetic flux to conduct axially outward relative to the radial overlap area between the coil portion 84 and the plunger 88. This configuration facilitates stronger pull on the plunger 88, allowing for a lower voltage to be delivered to the coil 176, which reduces heat generation and allows for the use of a smaller battery, potentially resulting in longer battery life.

[0211] A plunger 88 is housed within a plunger guard 140, which protects the plunger 88 and rod 132 when the core 82 is removed from the spray gun 24. The plunger guard 140 radially surrounds the plunger 88 and extends axially beyond the plunger 88 in the upstream direction AD1, completely radially enclosing the plunger 88 and protecting it from bending contacts that could bend the rod 132 and impair the function of the core 82. The presence of the plunger guard 140 creates a large solenoid gap 188, which can create one or more air gaps between the coil portion 84 and the plunger 88, thus reducing performance. The reluctance region 192 can move material that conducts electromagnetic flux axially from the coil portion 84 to enhance the performance of the solenoid 38, while also enclosing the plunger 88 for protection.

[0212] Figure 10 It is an isometric view of the plunger cover 140ʹ and the plunger 88. Figure 10 Another way to alter the magnetic conductivity of the plunger shroud 140ʹ is shown. The plunger shroud 140ʹ includes one or more apertures 200 extending through the plunger shroud 140. One or more ferromagnetic pads 202 are added to a base 108 within the apertures 200. In some examples, the base 108 may be formed of a non-ferromagnetic material, such as aluminum. The ferromagnetic pads 202 may fill the apertures 200 within the plunger shroud 140 to deliver electromagnetic flux through the ferromagnetic pads 202. As shown, pairs of ferromagnetic pads 202 may be used, but three, four, or other numbers and arrangements of ferromagnetic pads 202 may also be arranged circumferentially around axis VA to form a flux region 190. As shown, the ferromagnetic pads 202 are not positioned along the magnetic resistance region 192.

[0213] Figure 11 It is an isometric view of the plunger guard 140ʹʹ and the plunger 88ʹ. Figure 11 Another method for altering the magnetic conductivity of the plunger shroud 140ʹʹ is illustrated. A notch 204 is formed on the plunger shroud 140ʹʹ, and the plunger 88ʹ includes a radial extension 206 extending further radially along the notch 204, bringing the radial extension 206 of the plunger 88ʹ closer to the coil 176 to reduce the size of the air gap between the coil 176 and the plunger 88ʹ. Therefore, as discussed above, the presence of the plunger shroud creates a radial gap and results in inefficient performance of the solenoid 38. The tongue 208 of the plunger shroud 140ʹʹ can still extend axially beyond the plunger 88ʹ to protect the plunger 88ʹ.

[0214] Figure 12A This is a cross-sectional view showing the fluid handling components of the spray gun. Figure 12B yes Figure 12A The diagram shows an exploded view of the components. Valve housing 1086 and cylinder 1082 are described above as valve housing 86 and cylinder 82 (both are located in...). Figures 4A to 6B(Best shown in the diagram) They are essentially similar. Therefore, the designation numbers of the fluid handling assembly, including valve housing 1086 and core 1082, are consistent with those of the fluid handling assembly including valve housing 86 and core 82, except that 1000 is added (e.g., core 82 vs. core 1082). It is understood that components not explicitly labeled or described may be the same as those used for valve housing 86 and core 82; for the sake of brevity, related descriptions are omitted here.

[0215] Core 1082 is the same as core 82, except that core body 1104 does not include end cap 144. Plunger chamber 1142 opens in the axial AD1 direction away from spray valve 1036.

[0216] The coil housing 1150 is mounted to the fluid receiver 1148. The inner side 210 of the coil housing 1150 is axially disposed towards the spray valve 1036 and the plunger 1088. The inner side 210 may define the travel of the plunger 1088. During installation, the core 1082 may extend into the housing bore 1094 until the bottom of the core body 1104 is on the coil housing 1150 to position the core 1082 relative to the valve housing 1086.

[0217] As discussed above, plunger 1088 may be positioned along rod 1132 to set the travel of the spray valve 1036 for opening. In the example shown, plunger 1088 may be positioned relative to the distal end of plunger housing 1140, which is configured to mate with coil housing 1150. In the example shown, rod 1132 extends partially through plunger 1088. However, as discussed above, rod 1132 may extend axially entirely through plunger 1088.

[0218] Figure 13 This is a cross-sectional view showing the fluid handling components of the spray gun. Valve housing 2086 and cylinder 2082 are the same as the valve housing 86 and cylinder 82 described above (both are in...). Figures 4A to 6B (Best shown in the diagram) They are essentially similar. Therefore, the designation numbers of fluid handling components, including valve housing 2086 and core 2082, are consistent with those of fluid handling components including valve housing 86 and core 82, except that 2000 is added (e.g., core 82 vs. core 2082). It is understood that components not explicitly labeled or described may be the same as those used for valve housing 86 and core 82; for the sake of brevity, related descriptions are omitted here.

[0219] In the example shown, the core 2082 does not include a plunger shroud. However, to help protect the plunger 2088 when it is outside the gun body, a receiving engagement is provided between the plunger 2088 and the base 2108. The base 2108 includes a receiving cavity 212. The receiving cavity 212 can be cylindrical, among other options. The plunger 2088 includes an extension 214. The extension 214 extends into the receiving cavity 212. The extension 214 can reciprocate within the receiving cavity 212 during the actuation of the solenoid 2038. The extension 214 can be cylindrical, among other options. The cross-sectional shape of the receiving cavity 212 perpendicular to the axis VA can be the same as the cross-sectional shape of the extension 214 perpendicular to the axis VA, but it is understood that other configurations are also possible. The tight fit between the extension 214 and the receiving cavity 212 prevents significant movement of the plunger 2088 relative to the base 2108 and the rest of the core 2082, thus mechanically protecting the plunger 2088 from the bending of the rod 2132. This is one of the main reasons why the plunger 2088 needs protection. A vent 216 is formed in the plunger 2088 to allow air to escape from the receiving cavity 212 during actuation. In the example shown, the vent 216 extends through the extension 214 and radially outward through the body portion of the plunger 2088.

[0220] Rod retainer 218 connects rod 2132 to plunger 2088. Rod retainer 218 may be a ring secured to rod 2132 by crimping, welding, or other means. Rod retainer 218 may also be secured to plunger 2088 by press fitting, welding, or other means to connect plunger 2088 to rod 2132. In the example shown, rod retainer 218 is located within a recess in plunger 2088.

[0221] A buffer 220 is disposed around the extension 214 of the plunger 2088. The buffer 220 may be formed of rubber, other types of plastics, or other shock-resistant damping materials. The buffer 220 provides shock absorption to protect the plunger 2088 and the rod 2132.

[0222] The extension 214 may be formed of a magnetically active material, such as a ferromagnetic material or a magnetizable material, which forms the rest of the core of the plunger 2088, or the extension 214 may not be formed of such a magnetically active material.

[0223] In the example shown, the plunger 2088 is unobstructed, allowing it to be positioned radially closer to the coil portion 2084 than in the example where the plunger 2088 is obstructed by a plunger shroud. This minimizes the air gap between the coil portion 2084 and the plunger 2088, thereby improving the efficiency of the solenoid 2038. This configuration allows for the use of less battery power and permits the use of smaller batteries, or provides longer spraying operations.

[0224] Figure 14A This is the first isometric view of module 26 of the spray control assembly 14. Figure 14B This is the second isometric view of module 26. Figure 14C This is the first isometric exploded view of module 26. Figure 14D This is the second isometric exploded view of module 26. Figures 14A to 14D They will be discussed together. The module body 42, component controller 44, inlet connector 68, filter manifold 70, and user interface 222 of module 26 are shown. The module handle 224, arm 226, and main housing 228 of module body 42 are shown. The filter cover 230, filter housing 232, and filter 72 of filter manifold 70 are shown. A portion of conduit 28 is shown.

[0225] Module 26 is configured to receive pressurized spray fluid and output the pressurized spray fluid to spray gun 24. Module 26 is configured to receive signals from spray gun 24 and, in response to such signals, to control the supply of electrical power to the solenoid 38 of spray gun 24. In the example shown, module 26 is configured as a channel for spray fluid through which the spray fluid flows, but module 26 does not include any pump or other fluid drive device that pressurizes or drives the spray fluid by mechanical displacement.

[0226] Module body 42 is configured to support other components of module 26. In the example shown, module body 42 includes a main housing 228 forming the lower part of module body 42 and a module handle 224 forming the upper part of module body 42. Module body 42 houses component controller 44 and power supply 58. Module handle 224 is connected to main housing 228 via arms 226. Although two arms 226 are shown, a single arm or other number of arms can connect main housing 228 to module handle 224. Both main housing 228 and module handle 224 can be formed from module body 42. In addition, portions of main housing 228 and module handle 224 can also be integrally formed, among other options.

[0227] As shown, module body 42 can be formed from housings 234. Each housing 234 can be injection molded into a polymer, among other options. Two housings 234 divide module body 42 into approximately two halves laterally, with a seam in the middle.

[0228] The filter manifold 70 is supported by the module body 42. In the example shown, the filter manifold 70 is supported by the module handle 224. The filter manifold 70 may be at least partially disposed within the module body 42. In the example shown, the filter manifold 70 is partially disposed within the module body 42, in this example within the module handle 224, and partially disposed outside the module body 42.

[0229] As shown, the filter housing 232 is at least partially located within the module body 42. In the example shown, the filter housing 232 is at least partially located within the module handle 224. The filter housing 232 is supported by the module body 42. A filter 72 is housed within the filter housing 232. The filter 72 may be a filter screen through which the sprayed fluid can flow to filter particles in the sprayed fluid. The filter 72 may be hollow and cylindrical, having a polymer frame and a metal mesh forming the surface of the filter screen.

[0230] Filter cap 230 may be mounted on filter housing 232, securing filter 72 inside filter housing 232. Filter 72 may be an inside-out filter, wherein sprayed fluid flows into the interior of filter 72 through one axial end of filter 72, must then move through the filter material to exit to the outside of filter 72 and continue moving downstream. Filter cap 230 may be threaded onto filter housing 232, among other connection options. In the example shown, filter cap 230 receives a threaded ring from filter housing 232, and filter cap 230 includes internal threads complementary to the threads of filter housing 232.

[0231] In the example shown, inlet connector 68 is formed by filter cap 230. Inlet connector 68 is supported by cap 236. Cap 236 may include threads to connect filter cap 230 to filter housing 232. The threads of cap 236 may be complementary to the threads of filter housing 232. Inlet connector 68 may be of the quick-disconnect type or threaded type and is configured to connect to feed line 52 to receive pressurized spray fluid into module 26.

[0232] In some examples, the inlet connector 68 is configured to rotate relative to the cap 236. For example, the inlet connector 68 can rotate fully and continuously more than 360 degrees. This rotation allows the feed line 52 to rotate to reduce loops and bends, while minimizing or eliminating torque transmission to the filter manifold 70 and / or module 26.

[0233] Outlet connector 74 connects to conduit 28. Specifically, outlet connector 74 connects to fluid hose 46 of conduit 28 to output spray fluid to fluid hose 46. In the example shown, outlet connector 74 is formed by a connector that is mounted to and supported by filter housing 232. This connector can be considered as part of forming filter manifold 70. The connector can be attached to filter housing 232 such that it is rotatably secured relative to filter housing 232. In the example shown, fluid hose 46 is connected to outlet connector 74 at a location within module handle 224.

[0234] The conduit 28 is at least partially disposed within the module body 42. In the example shown, the conduit 28 extends at least partially within the module handle 224. Specifically, at the mating point of the conduit 28, the fluid hose 46 merges with one or more conductors 48 and is enclosed by a sheath 50. The one or more conductors 48 merge with the fluid hose 46 within the module body 42, and both the fluid hose 46 and the conductors 48 enter the sheath 50 at their positions within the module body 42. Thus, when the conduit 28 exits the module body 42, one or more conductors 48 are enclosed by the sheath 50. In other words, at the proximal end 76 of the conduit 28, one or more conductors 48 transition from outside the sheath 50 to below the sheath 50 within the module body 42, where the sheath 50 terminates (or begins) within the module body 42. Similarly, at the distal end 78 of the conduit 28, one or more conductors 48 transition from the inside of the sheath 50 to the outside of the sheath 50 within the spray gun 24, wherein the sheath 50 terminates (or begins) within the spray gun 24.

[0235] The filter manifold 70 is allowed to rotate within the module body 42. In this specific example, the rotation of the filter manifold 70 is restricted, allowing it to rotate relative to the module body 42, but not a full 360-degree rotation. This restriction is necessary because it is crucial that the conduit 28 can be twisted relative to the module body 42; otherwise, the hand movement generated by the spray gun 24 during spraying would be limited. The mass of the module 26 restricts the movement of the spray gun 24 unless the conduit 28 is allowed to rotate relative to the module body 42. However, excessive rotation of the conduit 28 within the module body 42 must be limited, otherwise one or more conductors 48 would become bundled and / or break because they cannot rotate continuously as one or more conductors 48 branch off from the fluid hose 46 and sheath 50 within the module body 42. Therefore, restricting the rotation of the filter manifold 70 allows the conduit 28 to rotate to a limited extent, but not a full rotation (e.g., not 360 degrees), which allows one or more conductors 48 to integrate into the conduit 28 without damaging them.

[0236] User interface 222 is supported by module body 42. In the illustrated example, user interface 222 is supported by main housing 228. User interface 222 is located at the lower part of module body 42. User interface 222 includes inputs 238a, 238b. In the illustrated example, inputs 238a, 238b are formed by buttons. User interface 222 can communicate with component controller 44 to change the pressure setpoint of pumping component 12. As discussed above, module 26 can be configured to provide pressure commands to pumping component 12 to change the target pressure setpoint. Component controller 44 can be configured to cause incremental adjustment of the target pressure setpoint via spray controller 22 based on signals received from inputs 238a, 238b.

[0237] In the example shown, input 238a is configured to provide a signal indicating a desired increase in pressure, and input 238b is configured to provide a signal indicating a desired decrease in pressure. For example, pressing input 238a can gradually increase the target pressure setpoint, and pressing input 238b can gradually decrease the target pressure setpoint. These pressure increases and decreases correspond to a setting of pumping assembly 12, under which the electric motor 16 starts when the fluid pressure measured downstream of pump 20 is lower than the target pressure setpoint, and stops when the measured pressure reaches and / or exceeds the target pressure setpoint. Such instructions to increase or decrease the pressure setpoint can be wirelessly transmitted by the component controller 44 described in this invention.

[0238] Power source 58 is mounted to and supported by module body 42. Power source 58 is configured to provide electrical power to the electrical components of module 26 and spray gun 24. In the illustrated example, power source 58 is formed as a battery removably mounted to module body 42. Power source 58 can be mounted to module body 42 by sliding power source 58 relative to module body 42. In the illustrated example, power source 58 is configured to be mounted and removed by axial movement along the flow axis FA through module 26. Power source 58 is configured to be mounted by moving in a downstream direction relative to the fluid flow direction of module handle 224. It is understood that in various other examples, power source 58 can be mounted by moving vertically upward or downward. In various other examples, power source 58 may be integrated into module 26, making power source 58 non-removable.

[0239] In the example shown, module 26 is configured with its front end 240 facing forward relative to the user and its rear end 242 facing backward away from the user. This configuration allows the conduit 28 to face forward relative to the user. The conduit does not need to wrap around module body 42 or the user to reach spray gun 24. Furthermore, filter manifold 70 extends outward from rear end 242. Therefore, the feed line 52 is positioned behind the user, rather than in the user's walking path, which prevents the risk of tripping. Front end 240 and rear end 242 form the axial ends of module 26.

[0240] The power supply 58 and the user interface 222 are located on the same side of the module body 42. The power supply 58 and the user interface 222 are located on side 244a of the module body 42. No control or mechanical / electrical connections are provided on side 244b of the module body 42 opposite to side 244a. As will be discussed in more detail below, side 244a can face either inwards towards the user or outwards away from the user, while the front end 240 remains facing forward relative to the user. Similarly, side 244b can face either inwards towards the user or outwards away from the user, while the front end 240 remains facing forward relative to the user.

[0241] Figure 15 It is along Figure 14ACross-sectional view of centerline 15-15. Figure 16 It is along Figure 14A Cross-sectional view of centerline 16-16. Figure 15 and Figure 16 A section will be discussed. The module body 42, inlet connector 68, filter manifold 70, and rotary lock 246 of module 26 are shown. The module handle 224, arm 226, and main housing 228 of module body 42 are shown. The filter cover 230, filter housing 232, and filter 72 of filter manifold 70 are shown. A portion of conduit 28 is shown.

[0242] The filter manifold 70 is at least partially disposed within the module handle 224. In the example shown, the filter manifold 70 supports an inlet connector 68 and an outlet connector 74. The filter manifold 70 is configured to receive spray fluid through the inlet connector 68 and to output spray fluid through the outlet connector 74 to the conduit 28.

[0243] The filter manifold 70 extends outward from the rear end 242 of module 26. In the illustrated example, the filter manifold 70 extends rearward from module handle 224. Filter housing 232 is partially disposed within and partially disposed outside module body 42. Filter housing 232 includes a mounting body 248, a body connector 250, and a connector body 252. Mounting body 248 is configured to mate with filter cap 230 for connection to filter cap 230. Mounting body 248 receives filter 72 such that the filter is disposed within mounting body 248. Body connector 250 extends between connector body 252 and mounting body 248 and connects to connector body 252 formed by outlet connector 74. In the illustrated example, mounting body 248 includes external threads at both upstream and downstream ends for connection to filter cap 230 and body connector 250, respectively. Body connector 250 includes internal threads at both upstream and downstream ends for connection to the external threads of mounting body 248 and connector body 252, respectively.

[0244] A filter cover 230 is attached to a filter housing 232 to enclose a filter 72 within the filter housing 232. The filter cover 230 is removable from the filter housing 232 to access and remove the filter 72. The engagement between the filter cover 230 and the filter housing 232 is located outside the module body 42, allowing the engagement to be formed or disengaged from the outside of the module body 42. The filter housing 232 is configured to remain mounted to the module body 42.

[0245] The filter cap 230 includes an inlet connector 68 connected to the feed line 52 to receive pressurized spray fluid into the module 26. The inlet connector 68 is supported by a cap 236, which is connected to the filter housing 232. In the example shown, the inlet connector 68 is connected to the cap 236 such that both the inlet connector 68 and the feed line 52 are freely rotatable on the flow axis FA.

[0246] An internal flow channel 66 is disposed downstream of the filter 72. The internal flow channel 66 extends between the filter 72 and the fluid hose 46 and is configured to supply spray fluid to the fluid hose 46. The spray fluid flows out of the internal flow channel 66 and enters the fluid hose 46 at a location within the module body 42. In the example shown, the internal flow channel 66 is partially defined by the filter housing 232.

[0247] In the example shown, module handle 224 defines handle cavity 254. Filter manifold 70 is partially disposed within handle cavity 254 and extends outwardly through handle cavity 254 via upstream port 256. Upstream port 256 is located at the upstream end of handle cavity 254. This upstream port 256 opens through the rear end 242 of module body 42. Filter manifold 70 does not extend axially through handle cavity 254 entirely along the flow axis FA. Instead, conduit 28 extends into module handle 224 via downstream port 258. This downstream port 258 opens through the front end 240 of module body 42. Conduit 28 extends through downstream port 258 such that fluid hose 46 and conductor 48 can enter / exit from sheath 50 at a location within module body 42 where fluid hose 46 and conductor 48 are shielded by module body 42.

[0248] As discussed above, the filter manifold 70 is mounted such that it can complete a partial, but not a full, rotation on the flow shaft FA. In the example shown, a rotary lock 246 engages with the filter housing 232 to prevent the filter manifold 70 from completing a full rotation. The rotary lock 246 is located externally to the filter housing 232 and internally to the module body 42. The rotary lock 246 may extend at least partially around the filter housing 232. In some examples, the rotary lock 246 may support the filter housing 232 within the module body 42 and allow rotation of the filter housing 232 on the flow shaft FA. The rotary lock 246 allows the filter module 26 to rotate on the flow shaft FA, but it prevents a full 360-degree rotation of the filter housing 232.

[0249] like Figure 16As best shown, the rotary lock 246 includes an annulus 260 and a post 262. The annulus 260 extends around a filter housing 232. The filter housing 232 extends through the annulus 260 such that it extends outwardly from the annulus 260 along the flow axis FA in both the upstream direction UD and the downstream direction DD. The post 262 extends from the annulus 260 and is disposed inside the module body 42. The post 262 is configured to engage with the module body 42 to prevent the rotary lock 246 from rotating relative to the module body 42. In the example shown, the post 262 extends into an arm 226 of the module body 42. The post 262 may engage with the module body 42, which is axially fixed along the flow axis FA.

[0250] An inner tongue 264 extends from the annulus 260. The inner tongue 264 extends radially inward from the annulus 260 and faces the filter housing 232. The filter manifold 70 includes a housing tongue 266 extending from the filter housing 232. The housing tongue 266 extends outward away from the flow axis FA. The housing tongue 266 is configured to circumferentially overlap the inner tongue 264, such that the inner tongue 264 blocks the housing tongue 266, thereby preventing the filter housing 232 from completing a full 360-degree rotation on the flow axis FA. The housing tongue 266 of the filter housing 232 engages with the inner tongue 264 of the rotary lock 246, preventing the filter manifold 70 from completing a full 360-degree rotation.

[0251] In some examples, the rotary lock 246 can axially secure the filter manifold 70 relative to the module body 42. For example, the rotary lock 246 can cooperate with the filter housing 232 such that it prevents the filter housing 232 from moving axially along the flow axis FA. In some examples, multiple fasteners can cooperate with the filter manifold 70 to rotatably restrict and axially secure the filter manifold 70.

[0252] In the illustrated example, a positioning groove 268 is formed around the filter manifold 70. The positioning groove 268 is partially formed by the filter housing 232 and partially by the body connector 250. In the illustrated example, a locking ring 270 extends into the positioning groove 268 to axially position the filter manifold 70 relative to the module body 42. In the illustrated example, the locking ring 270 is formed by one or more ribs of the module body 42. These ribs may be formed as part of the housing 234 forming the module body 42. The locking ring 270 may extend partially or circumferentially around the filter housing 232. In the illustrated example, a fastener (such as the locking ring 270) for axially securing the filter manifold 70 is located downstream of the fastener, which rotatably restricts the filter manifold 70 (such as a rotary lock 246); however, it is understood that not all examples involve this restriction.

[0253] During operation, the spraying fluid enters module 26 through inlet connector 68. It is understood that inlet connector 68 can be directly connected to the supply line 52, or it can be connected to another hose assembly that fluidly connects the supply line 52 to inlet connector 68. The spraying fluid flows through filter 72 and enters internal flow channel 66. The spraying fluid flows through internal flow channel 66 and exits to fluid hose 46 via outlet connector 74. The spraying fluid flowing within and through module body 42 is configured to exist only within module handle 224 and not within other parts of module body 42. All portions of the fluid passage within module body 42 are isolated from the electronic component controller 44 located within main housing 228.

[0254] In some examples, the fluid connections formed within module body 42 can be considered permanent connections because such connections are not intended to be disconnected during the operational life of module 26. Fluid hose 46 is connected to outlet connector 74 and remains connected to outlet connector 74 for the life of module 26. The connections formed within module body 42 are fixed, such that components (e.g., conduit 28 and filter manifold 70) cannot rotate relative to each other. This fixed connection provides greater robustness and prevents leaks.

[0255] Module 26 offers significant advantages. The conduit 28 connects to the filter manifold 70 at the outlet connector 74. A fluid hose 46 is secured to the filter manifold 70. The fluid hose 46 and conductor 48 extend into the sheath 50. The conductor 48 is positioned outside the fluid hose 46, allowing continuous rotation of the conduit 28 to bind or secure it. The filter manifold 70 is secured within the module body 42, allowing it to rotate relative to the module body 42. This allows for stress relief on the conduit 28 and makes it easier for the user to manipulate and operate; however, the filter manifold 70 prevents rotation beyond a certain angle. In various examples, this angle is less than 360 degrees. The rotatability of the filter manifold 70 relative to the module body 42 allows the conduit 28 to rotate relative to the module body 42, which relieves stress on the conduit 28 and provides easier operation of the spray control assembly 14. However, preventing full rotation protects the conductor 48, and consequently, the electrical connection formed between the module 26 and the spray gun 24 via the conduit 28.

[0256] Figure 17 This is an isometric view of the spray control assembly 14. It shows the spray gun 24, module 26, conduit 28, and mounting base 272 of the spray control assembly 14. It also shows the mounting body 274, mounting arm 276, mounting tab 278, mounting hook 280, mounting hole 282, and support member 284 of the mounting base 272. The outer side 286 and inner side 288 of the mounting body 274 are shown.

[0257] Mount 272 is configured to support module 26 on a user, eliminating the need for the user to carry module 26 by hand during operation. Instead, mount 272 can be attached to a belt via clamps, hooks, fasteners, rings, or other connectors that can be integrated into mount 272. Mount 272 can be attached to other wearable items besides belts, such as straps, shoulder straps, vests, backpacks, or other wearable items. In the illustrated example, support 284 is configured to attach to the user to support module 26 on the user. In the illustrated example, support 284 is formed as a clamp. Support 284 is disposed on the inner side 288 of mount 274. The inner side 288 is configured to face the user when mount 272 is attached to the user. The outer side 286 is configured to face outwards from the user when mount 272 is attached to the user.

[0258] Mounting arm 276 extends from mounting body 274. As shown, module 26 can be held by mounting arm 276. In various examples, module handle 224 can be held by mounting arm 276. Mounting arm 276 allows module 26 to be easily mounted and dismounted via vertical movement because mounting arm 276 includes an upward-facing opening. Mounting arm 276 can be configured to snap-fit ​​onto module handle 224. This snap-fit ​​secures module handle 224 in the mounting arm 276 when snapped in place, such that the spring force of mounting arm 276 must be overcome to remove module handle 224 from mounting arm 276. Even when module 26 is mounted, mounting arm 276 allows module handle 224 (and the hose connected to module 26) to rotate along a flow axis FA passing through module handle 224, which contributes to comfort and operability. As shown, mounting arm 276 extends through module bore 290, which extends through module body 42. In the example shown, module hole 290 is formed between module arm 226, module handle 224 and main housing 228.

[0259] A mounting tab 278 is formed on the mounting arm 276. A cutout 292 is formed in the mounting arm 276 to define the mounting tab 278. During installation and removal of the mounting base 272 of module 26, the cutout 292 provides bending space for the mounting tab 278. The mounting tab 278 is configured to mate with the module body 42 to restrict rotation of the module handle 224 within the mounting arm 276. During installation, the module handle 224 can be inserted into the mounting arm 276 by vertical movement. The module 26 can then be rotated so that the mounting tab 278 passes over the top side of the main housing 228 and through the module hole 290. The mounting tab 278 can be fastened to the main housing 228. The mating of the mounting tab 278 with the main housing 228 prevents the module 26 from rotating away from the user during operation and when the user moves to the working side, thereby improving comfort and operability. However, the module 26 can still rotate toward the user and away from the mounting tab 278, further contributing to improved comfort and operability. However, it is understandable that not all examples are so restrictive. In some examples, the mounting base 272 does not include a mounting tab 278 that rotatably restricts the module 26. In such examples, the module 26 can rotate freely on the module handle 224 within the mounting arm 276.

[0260] Mounting hook 280 is configured to engage with spray gun 24 to support spray gun 24 on mounting base 272. In the example shown, mounting hook 280 extends from mounting arm 276. Mounting hook 280 extends away from mounting body 274. Mounting hook 280 extends such that it defines a vertically oriented opening. In the example shown, the opening is vertically upward. Although mounting hook 280 is shown to extend from mounting arm 276, it is understood that not all examples are limited in this way. For example, mounting hook 280 may extend from mounting body 274, and in other locations. In some examples, one or more mounting hooks 280 may be formed on or by module body 42 such that spray gun 24 can be supported on and by module body 42. In the example shown, mounting base 272 includes a plurality of mounting hooks 280, two in this example, but it is understood that mounting base 272 may include a single mounting hook 280 or more than two mounting hooks 280.

[0261] Mounting hook 280 provides a position for the spray gun 24 to be mounted on and supported by mounting base 272. For example, a user can insert a portion of the spray gun 24, such as a portion of the spray gun body 30, such as the top hook 294, into the opening of mounting hook 280. This portion of the spray gun 24 engages with mounting hook 280, allowing the spray gun 24 to suspend on mounting hook 280 and be supported by mounting base 272. This configuration allows the user to release the spray gun 24 without putting it down or dragging it. Mounting hook 280 supports the spray gun 24 in a position easily accessible to the user. The multiple mounting hooks 280 shown allow the user to bring the spray gun 24 close to the mounting hook 280 from the front end 240 of module 26, regardless of whether module 26 is worn on the user's right or left side.

[0262] Mounting hole 282 extends through mounting body 274. Mounting hole 282 extends entirely through mounting body 274. In some examples, mounting hole 282 may extend through support member 284. Mounting hole 282 facilitates support of mounting base 272 on other structures, allowing mounting base 272 to fully support the spray control assembly 14 off the ground even when the user is not wearing mounting base 272. Figure 2 As shown, the pumping assembly 12 may include a retainer. For example, the retainer may be formed from the housing of a filter assembly of the pumping assembly 12, which may house an upstream filter. The retainer may be cylindrical, among other options. The retainer may be supported on a mounting base 272 on the pumping assembly 12 via a mounting hole 282.

[0263] Module 26 can be supported on mounting base 272 such that the front end 240 of module 26 faces forward relative to the user. In this configuration, the conduit 28 exiting from the front end 240 of module 26 does not need to be wrapped around the user or module 26 to reach the spray gun 24 held by the user. Mounting base 272 is configured to support module 26 on the left or right side of the user, providing a convenient and ergonomic fit regardless of whether the user is left- or right-handed while spraying, with the front end 240 of module 26 facing forward relative to the user. Mounting base 272 is configured such that the front end 240 of module 26 faces forward towards the user. Regardless of the position of mounting base 272 on the user, the inner side 288 of mounting base 272 is configured to face inward towards the user. If mounting base 272 is located on the user's left side, then... Figure 17The mounting module 26 is shown with side 244a facing outwards away from the user and side 244b facing inwards towards the user. If the mounting base 272 is located on the user's right side, the module 26 can be mounted with side 244a facing inwards towards the user and side 244b facing outwards away from the user. Therefore, the mounting base 272 facilitates mounting the module 26 relative to the user in a variety of different orientations while keeping the front end 240 facing forward.

[0264] Mount 272 is configured to support module 26 on the user. Supply line 52 is connected to module 26 to supply spray fluid to spray control assembly 14. Supply line 52 is connected to module 26 such that the weight of supply line 52 is borne by module 26. The weight of supply line 52 is not transmitted through module 26 and upward through conduit 28 to be carried by spray gun 24 and then by the user's hand. Instead, the weight of supply line 52 is supported by module 26, which is supported by mount 272 on the user. This configuration provides the user with easier and more ergonomic spraying because the user does not need to carry and support the weight of supply line 52 in their hands. This configuration is particularly useful when the user is spraying at a height, as the increased length of supply line 52 not on the ground and supported by the user will increase the weight of supply line 52, for example, when the user is on a ladder.

[0265] Although the present invention has been described with reference to exemplary embodiments, those skilled in the art will understand that various changes and substitutions can be made without departing from the scope of the invention. Furthermore, various modifications can be made to adapt specific situations or materials to the teachings of the invention without departing from the basic scope of the invention. Therefore, the present invention is not intended to limit the specific embodiments disclosed, but rather to include all embodiments falling within the scope of the appended claims. Any single feature or any combination of features in any embodiment of the invention shown may be used independently of other features in the embodiments shown and in another different embodiment. Accordingly, the scope of the invention and any of the claims is not limited to the embodiments and / or combinations of features shown in the invention, but may include any combination of one, two, or more features shown in the invention.

Claims

1. A core for use in a spray gun, the spray gun including a solenoid coil, the core comprising: A cylindrical core that defines a fluid chamber and has an inlet and an outlet; A spray valve is disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; as well as A plunger is connected to the spray valve, the plunger being configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, in which the inlet is fluidly connected to the outlet; The core body, the spray valve, and the plunger are integrated into a single assembly that can be inserted into and removed from the spray gun.

2. The core according to claim 1, wherein the core body comprises a fluid housing and a base connected to the fluid housing.

3. The core according to claim 2, wherein the spray valve is disposed within the fluid housing and the plunger is disposed within the base.

4. The core according to any one of claims 2 and 3, wherein the inlet is formed through the fluid housing and the outlet is formed through the fluid housing.

5. The core according to any one of claims 2 to 4, wherein the core further comprises a rod extending within the fluid housing and the base.

6. The core according to any one of claims 3 to 5, further comprising an end cap mounted to the base.

7. The core according to claim 6, wherein the end cap encloses a plunger chamber within the base, and the plunger is disposed within the plunger chamber.

8. The core according to any one of claims 6 and 7, wherein the end cap defines a stroke limit for the plunger.

9. The core according to any one of claims 6 to 8, wherein the end cap prevents the plunger from being removed from the base.

10. The core according to any one of claims 6 to 9, wherein the end cap is directly attached to the core body.

11. The core according to any one of claims 2 to 10, wherein the base is threadedly connected to the fluid housing.

12. The core according to any one of the preceding claims, wherein: The fluid chamber is located inside the core. The spray valve is located at least partially within the fluid chamber; The spray valve controls the release of the spraying fluid from the fluid chamber; and The fluid chamber receives the spraying fluid through the inlet.

13. The core according to any one of the preceding claims, further comprising: A spring, located inside the cylinder, pushes the valve to the closed state.

14. The core according to any one of claims 1 to 4 and 6 to 11, further comprising: A rod extends within the core body, connecting the plunger to the spray valve.

15. The core according to claim 14, further comprising: A seal is located around the rod, the rod being configured to reciprocate within the seal.

16. The core according to any one of claims 14 and 15, wherein the rod extends at least partially within the plunger.

17. The core according to any one of claims 14 to 16, wherein the rod extends entirely through the plunger.

18. The core according to any one of claims 14 to 17, wherein the rod is attached to the rear side of the plunger.

19. The core according to any one of claims 14 to 18, wherein the rod is welded to the plunger.

20. The core according to any one of claims 14 to 19, wherein...

21. The core according to any one of the preceding claims, wherein the plunger is located within the core body and reciprocates relative to the core body such that the core body extends rearward toward the plunger.

22. The core according to claim 21, wherein the core body comprises a cylindrical chamber, and the plunger is located within the cylindrical chamber.

23. The core according to claim 22, wherein the cylindrical chamber includes an opening on the rear side of the core body.

24. The core according to any one of the preceding claims, wherein the entire magnetically active material for the coil to electromagnetically drive the spray valve is located within the core body.

25. The core according to any one of the preceding claims, wherein the first seal and the second seal are spaced apart along the outer axial direction of the core body, and wherein the inlet is disposed between the first seal and the second seal.

26. The core according to any one of the preceding claims, wherein an external thread is formed on the core body, the external thread being configured to engage with the internal thread of the spray gun.

27. The core according to any one of the preceding claims, wherein the spray valve comprises a ball and an annular seat, the ball cooperating with the annular seat to seal the outlet, and the ball moving away from the annular seat to allow flow out of the outlet.

28. The core according to any one of the preceding claims, further comprising a plunger shroud that at least partially covers the plunger and extends axially beyond the plunger.

29. The core according to claim 28, wherein the plunger cover includes a flux region and a reluctance region.

30. The core according to claim 29, wherein the flux region is formed of a first type of material and the reluctance region is formed of a second type of material, such that the permeability of the flux region is greater than the permeability of the reluctance region.

31. A spray gun, comprising: Valve body, defining the housing orifice; trigger; The core according to any of the preceding claims, wherein the core is configured to be mounted to the valve housing such that the core is at least partially disposed within the valve housing and such that the plunger is operatively aligned with the solenoid coil.

32. The spray gun of claim 31, wherein when the core is received within the housing bore, the solenoid coil surrounds the plunger.

33. A spray gun, comprising: Gun body; A solenoid coil is disposed within the gun body; handle; trigger; A spray valve, the spray valve including a drivable seal fluidly located between an inlet and an outlet; as well as A plunger configured to move by an electromagnetic field generated by the solenoid coil; as well as A rod is connected between the spray valve and the plunger, such that the plunger is moved by the electromagnetic field generated by the solenoid coil, thereby driving the spray valve to one or both of an open and closed state, wherein the rod extends at least partially into the plunger.

34. The spray gun of claim 33, wherein the rod is directly connected to each of the spray valve and the plunger.

35. The spray gun according to any one of claims 33 and 34, wherein the rod extends entirely through the plunger.

36. The spray gun according to any one of claims 33 to 35, wherein the rod is directly attached to the plunger.

37. The spray gun according to any one of claims 33 to 36, wherein the rod is attached to the rear side of the plunger.

38. The spray gun according to any one of claims 33 to 37, wherein the rod is welded to the plunger.

39. The spray gun according to any one of claims 33 to 38, wherein the plunger is fixed to a specific position along the rod, the specific position determining the opening distance of the spray valve.

40. A method of manufacturing a spray gun according to any one of claims 33 to 39, the method comprising: Attach the first end of the rod to the spray valve; as well as After attaching the first end of the rod to the valve, the position of the plunger on the rod is determined, and then the plunger is fixed to the rod.

41. A core for use in a spray gun, the spray gun including a solenoid coil, the core comprising: A cylindrical core that defines a fluid chamber and has an inlet and an outlet; A spray valve is disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; as well as A plunger, connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, is configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, in which the fluid chamber is fluidly connected to the outlet; The core body, the spray valve, and the plunger are integrated into a single assembly that can be inserted into and removed from the spray gun.

42. The core according to claim 41, wherein the plunger is completely disposed within the plunger cover.

43. The core according to any one of claims 41 and 42, wherein the plunger shroud comprises a flux region and a reluctance region, wherein the flux region is formed of a first type of material and the reluctance region is formed of a second type of material, such that the permeability of the flux region is greater than the permeability of the reluctance region.

44. The core according to claim 43, wherein the first type of material is ferromagnetic and the second type of material is non-ferromagnetic.

45. The core according to any one of claims 43 and 44, wherein the magnetic resistance region extends in an upstream direction beyond the plunger.

46. ​​The core according to any one of claims 41 to 45, wherein the core body comprises: A fluid housing, wherein the spray valve is disposed within the fluid housing; A base connected to the fluid housing, the base including the plunger shroud.

47. The core according to claim 46, wherein the inlet is formed in the fluid housing and the outlet is formed in the fluid housing.

48. The core according to any one of claims 46 and 47, wherein the base is not a pressure vessel.

49. The core according to any one of claims 46 to 48, wherein the first seal is supported on the outside of the fluid housing and the second seal is supported on the outside of the base.

50. The core according to claim 49, wherein an external thread is formed on the outside of the core body, the core mounting seat is axially disposed between the first seal and the outlet, and the core mounting seat is axially disposed between the second seal and the outlet.

51. The core according to any one of claims 49 and 50, wherein the inlet is axially disposed between the first seal and the second seal.

52. The core according to any one of claims 46 to 51, further comprising: An end cap is attached to the base and overlaps axially with the plunger chamber.

53. The core according to claim 52, wherein the end cap includes a groove aligned on the shaft, the groove facing the opening of the plunger chamber.

54. The core according to claim 53, further comprising: A rod extends between and connects the plunger and the spray valve.

55. The core according to claim 54, wherein when the spray valve is in the open state, the rod extends into the groove and radially overlaps with the end cap.

56. The core according to any one of claims 52 to 55, wherein the end cap defines a travel limit for the plunger in the upstream direction.

57. The core according to any one of claims 46 to 53, further comprising: A rod extends between and connects the plunger and the spray valve; as well as A dynamic seal is axially disposed between the fluid chamber and the plunger chamber, and the dynamic seal engages with the outside of the rod.

58. The core according to claim 57, wherein the dynamic seal is supported by the base.

59. The core according to any one of claims 46 to 58, wherein the base defines an upstream end of the fluid chamber and the fluid housing defines a downstream end of the fluid chamber.

60. The core according to any one of claims 41 to 59, further comprising: A spring is configured to bias the spray valve to a closed state.

61. The core according to claim 60, wherein the spring is disposed within the fluid chamber.

62. A core for use in a spray gun, the spray gun including a solenoid coil, the core comprising: A cylindrical core having an upstream end and a downstream end and defining a fluid chamber, wherein an inlet and an outlet are formed through the cylindrical core; A spray valve is disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; A plunger, connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, is configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, wherein the fluid chamber is fluidly connected to the outlet in the open state; as well as A rod extends between the plunger and the spray valve to connect the plunger to the spray valve; The core body, the spray valve, and the plunger are integrated into a single assembly, which can be inserted into and removed from the spray gun as a single assembly; and The first distance is set as the opening distance of the spray valve.

63. The core according to claim 62, wherein the rod extends axially entirely through the plunger.

64. The core according to any one of claims 62 and 63, wherein the rod is fixed to the upstream side of the plunger.

65. The core according to any one of claims 62 to 64, wherein the plunger chamber is closed in both the upstream and downstream directions.

66. The core according to any one of claims 62 to 65, wherein the core body includes an end cap disposed on the opposite side of the plunger and the fluid chamber, the end cap axially overlapping the plunger to define a stroke limitation of the plunger.

67. A core for use in a spray gun, the spray gun including a solenoid coil, the core comprising: A cylindrical core having an upstream end and a downstream end and defining a fluid chamber, wherein an inlet and an outlet are formed through the cylindrical core; A spray valve is disposed within the core body, the spray valve including a drivable seal fluidly located between the inlet and the outlet; A plunger, connected to the spray valve and at least partially disposed within a plunger chamber defined by a plunger shroud of the core body, is configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, wherein the fluid chamber is fluidly connected to the outlet in the open state; The plunger shield includes a magnetic flux region and a magnetic resistance region, wherein the magnetic flux region is formed of a first type of material and the magnetic resistance region is formed of a second type of material, such that the permeability of the magnetic flux region is greater than the permeability of the magnetic resistance region. The plunger radially overlaps with the magnetic flux region and the magnetic resistance region; as well as The core body, the spray valve, and the plunger are integrated into a single assembly that can be inserted into and removed from the spray gun.

68. The core according to claim 67, wherein the core body comprises: A fluid housing at least partially defines the fluid chamber, and the spray valve is disposed within the fluid housing; A base is connected to the fluid housing, wherein the plunger shroud is formed as part of the base; The base is formed such that the first type of material radially overlaps with the plunger and axially overlaps with the plunger.

69. The core according to any one of claims 67 and 68, wherein the magnetic resistance region does not overlap axially with the plunger.

70. The core according to any one of claims 67 to 69, wherein the magnetic resistance region extends to the downstream end.

71. A method for setting the opening distance of a spray valve of a cartridge in a spray gun, the method comprising: The plunger of the solenoid is mounted on a rod that extends between the spray valve and the plunger; Position the plunger at a set position along the rod to set the displacement distance of the solenoid, thereby setting the opening distance of the spray valve; as well as The plunger, the rod, and the plunger together are fixed at the set position.

72. The method of claim 71, wherein positioning the plunger at the predetermined position along the rod comprises: The plunger is magnetically pulled away from the spray valve in the upstream direction and moved to the set position.

73. The method of claim 71, wherein positioning the plunger at the predetermined position along the rod comprises: The magnetic positioner is placed above the upstream end of the cylinder core, such that the magnetic positioner magnetically pulls the plunger away from the spray valve in the upstream direction and pulls it to the set position; The magnetic positioner extends at least partially into the core to space the plunger from the upstream end of the core.

74. The method of claim 73, wherein fixing the plunger, the rod, and the plunger together at the predetermined position comprises: The rod is approached through a hole formed in the locator; as well as Secure the rod to the plunger.

75. The method according to any one of claims 71 to 74, further comprising: An end cap is secured to the core body, the end cap limiting the upstream stroke of the plunger.

76. A spray gun, comprising: Gun body; A solenoid coil is disposed within the gun body; handle; trigger; A valve housing, supported by the gun body, and the solenoid coil at least partially disposed within the valve housing, the valve housing comprising: A fluid receiver, configured to receive sprayed fluid; and A coil housing is mounted to the fluid receiver, the coil housing supports the solenoid coil, and the coil housing extends into the fluid receiver for connection to the fluid receiver; A spray valve, the spray valve including a drivable seal fluidly located between an inlet and an outlet; and A plunger configured to move by an electromagnetic field generated by the solenoid coil, such that the electromagnetic field generated by the solenoid coil moves the plunger to drive the spray valve to an open state, in which the inlet is fluidly connected to the outlet.

77. The spray gun of claim 76, wherein the coil housing includes an external thread that engages with the internal thread of the fluid receiver.

78. The spray gun according to any one of claims 76 and 77, wherein the coil housing comprises: A coil mounting base, which mates with the fluid receiver, to connect the coil housing to the fluid receiver; The first housing portion extends outward from the coil mounting base away from the axial direction; The second housing portion extends away from the first housing portion in the upstream direction; The solenoid coil is disposed within a housing groove, which is formed at the intersection between the first housing portion and the second housing portion.

79. The spray gun according to claim 78, further comprising: A solenoid cap is connected to the coil housing, wherein the solenoid coil is disposed within a cap recess formed by the solenoid cap.

80. The spray gun of claim 79, wherein the housing groove faces the inside of the shaft and opens in the upstream direction, and the cover groove is away from the outside of the shaft and opens in the downstream direction.

81. The spray gun according to any one of claims 79 and 80, wherein the solenoid coil is axially clamped between the solenoid cap and the coil housing.

82. The spray gun according to any one of claims 79 to 81, wherein the solenoid cap radially overlaps with the solenoid coil.

83. The spray gun according to any one of claims 79 to 82, wherein the electrical connector extends through the solenoid cap to connect to the solenoid coil.

84. The spray gun according to any one of claims 78 to 83, wherein the first housing portion overlaps axially with the fluid receiver.

85. A spray gun, comprising: Gun body; A solenoid coil is disposed within the gun body; handle; trigger; The valve housing is supported by the gun body, and the solenoid coil is at least partially disposed within the valve housing; A spray valve, the spray valve including a drivable seal fluidly located between an inlet and an outlet; as well as A plunger configured to move by an electromagnetic field generated by the solenoid coil, such that the electromagnetic field generated by the solenoid coil moves the plunger to drive the spray valve to an open state, in which the inlet is fluidly connected to the outlet; The solenoid coil is axially and radially clamped between the outer groove of the valve housing and the inner groove of the valve housing.

86. The spray gun of claim 85, wherein the solenoid coil is disposed on the rear side of the trigger.

87. The spray gun according to any one of claims 85 and 86, wherein the solenoid coil extends annularly around a housing bore within the valve housing.

88. The spray gun according to any one of claims 85 to 87, wherein the valve housing comprises: A solenoid cap is attached to the body of the valve housing, wherein the solenoid cap defines the inner recess.

89. The spray gun of claim 88, wherein the solenoid cap is connected to the coil housing of the valve housing, the coil housing being connected to a fluid receiver configured to receive spray fluid into the valve housing.

90. The spray gun of claim 89, wherein the coil housing defines the outer groove.

91. The spray gun according to any one of claims 89 and 90, wherein the electrical connector extends through the valve housing to be electrically connected to the solenoid coil.

92. The spray gun of claim 91, wherein the electrical connector extends axially through the valve housing.

93. The spray gun according to any one of claims 89 to 92, wherein the coil housing extends into the fluid receiver for connection to the fluid receiver.

94. The spray gun according to any one of claims 85 to 93, wherein the solenoid coil is disposed on the rear side of a housing inlet through the valve housing, the housing inlet being configured to allow spray fluid to enter the valve housing.

95. The spray gun according to any one of claims 85 to 94, further comprising: A core, including a core body defining a fluid chamber, including the spray valve, and including the plunger; The core can be installed into and removed from the housing bore within the valve housing.

96. The spray gun of claim 95, wherein when the core is mounted to the valve housing, a portion of the plunger radially overlaps with the solenoid coil.

97. A spraying system that delivers spraying fluid through a hose with a connector, the spray gun system comprising: A spray gun, the spray gun including a valve, an electric actuator for driving the valve, a handle, a trigger, and a sensor for detecting the actuation of the trigger; Battery; as well as The component controller is configured as follows: Receive electrical energy from the battery; In spray gun pairing mode, send a unique identifier; Receive a signal from the sensor indicating that the trigger is driven; Based on the signal, electrical energy is supplied to the electric drive; as well as Based on the signal, an instruction with the unique identifier is sent.

98. The spraying system according to claim 97, further comprising: Pump; An electric motor, configured to operate the pump; as well as The spraying controller is configured as follows: In sprayer pairing mode, the unique identifier is received; The unique identifier is stored as an instruction identifier in the memory of the spraying controller; Receive the instruction containing the unique identifier; Based on the instructions, the motor is started or stopped.

99. The spraying system of claim 98, wherein the spraying controller is configured to start or stop the motor by changing a threshold pressure setpoint based on the instruction.

100. The spraying system of claim 99, wherein changing the threshold pressure setpoint includes any of the following: The threshold pressure setpoint is set to be equal to or lower than the current pressure, causing the motor to stop; and The threshold pressure setpoint is set higher than the current pressure to restore the operation of the motor.

101. The spraying system according to any one of claims 99 to 100, wherein any instruction received by the spraying controller that does not include the unique identifier will not cause the spraying controller to start or stop the motor.

102. A spraying system that outputs spraying fluid through a hose with a connector, the spray gun system comprising: A spray gun, the spray gun including a valve, an electric actuator for driving the valve, a handle, a trigger, and a sensor for detecting the actuation of the trigger; Battery; The component controller is configured as follows: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; Based on the signal, electrical energy is supplied to the electric drive; as well as Based on the signal, send the instruction; Pump; An electric motor, configured to operate the pump; as well as The spraying controller is configured as follows: Receive the instruction; and The motor can be started or stopped by changing the threshold pressure setpoint.

103. The spraying system according to claim 102, wherein the system controller is configured as follows: In sprayer pairing mode, a unique identifier is received from the component controller; The unique identifier is stored as an instruction identifier in the memory of the system controller; Receive the instruction containing the unique identifier; Based on the instructions, the motor is started or stopped.

104. The spray gun system of any one of claims 102 and 103, wherein the spray controller is configured to change the threshold pressure setpoint by setting the threshold pressure setpoint to be equal to or lower than the current measured pressure, thereby causing the motor to stop.

105. The spraying system of claim 104, wherein the spraying controller is configured to change the threshold pressure setpoint by setting the threshold pressure setpoint to be higher than the currently measured pressure to restore the operation of the motor.

106. The spraying system of claim 105, wherein the spraying controller is configured to restore operation of the motor by setting the threshold pressure setpoint to a value higher than the currently measured pressure, based on a user-input pressure.

107. A spraying system, comprising: A spray gun, the spray gun including a valve, an electric actuator for driving the valve, a handle, a trigger, and a sensor for detecting the actuation of the trigger; Battery; The component controller is configured as follows: Receive electrical energy from the battery; In spray gun pairing mode, a unique identifier is sent to the spray controller of the pumping component; Receive a signal from the sensor indicating that the trigger is driven; Based on the signal, electrical energy is supplied to the electric drive; as well as Based on the signal, a spraying instruction is sent, the spraying instruction including spraying information and the unique identifier; The pumping assembly includes: Pump; An electric motor, configured to operate the pump; and The spraying controller is configured as follows: Receive the unique identifier in sprayer pairing mode; and The unique identifier is stored as an instruction identifier in the memory of the spraying controller; Receive the spraying command; and The motor is started or stopped based on a comparison between the unique identifier in the spraying instruction and the instruction identifier.

108. The spraying system of claim 107, wherein the pumping assembly is configured to receive the unique identifier and, when in the sprayer pairing mode, not transmit a signal to the spray gun.

109. The spraying system according to any one of claims 107 and 108, wherein both the component controller and the spraying controller are configured for unidirectional communication, wherein the spraying controller receives communication from the component controller, and the component is configured not to receive communication from the system controller.

110. The spraying system according to any one of claims 107 to 109, further comprising: A user interface configured to generate pressure adjustment commands; The component controller is configured to output the pressure adjustment command to the spray controller; as well as The spraying controller is configured to change the target pressure setpoint based on the pressure adjustment command.

111. The spraying system of claim 110, wherein the spraying controller is configured to increase the target pressure setpoint based on the pressure adjustment command.

112. The spraying system according to any one of claims 110 and 111, wherein: The user interface includes a first input and a second input; The first input configuration is to generate a first pressure adjustment command, which causes the system controller to adjust the threshold pressure setting upwards. as well as The second input is configured to generate a second pressure adjustment command, which causes the system controller to adjust the threshold pressure setting downward.

113. The spraying system according to claim 112, wherein the first input is a first button and the second input is a second button.

114. The spraying system according to any one of claims 110 to 113, further comprising: A module supporting the battery, the module being connected to a supply hose that provides pressurized spray fluid from the pump, wherein the module is fluidly connected to the spray gun to provide the pressurized spray fluid to the spray gun; as well as The user interface is formed on the module.

115. The spraying system of claim 114, wherein the component controller is at least partially disposed within the module body of the module.

116. A pumping assembly for a spraying system, the pumping assembly comprising: Pump; An electric motor, configured to operate the pump; as well as The spraying controller is configured as follows: The operation of the motor is controlled based on the target pressure setpoint to start or stop the pumping of the pump; The value of the target pressure setpoint is adjusted to the remapped pressure setpoint to stop the motor and the pump, wherein the remapped pressure setpoint is generated based on the measured pressure.

117. The pumping assembly of claim 116, wherein the spraying controller is configured to start the motor based on the target pressure setpoint and stop the motor based on the remapped pressure setpoint.

118. The pumping assembly according to any one of claims 116 and 117, wherein the system controller is configured to generate the remapping pressure setpoint based on the system controller receiving a stop spraying command.

119. The pumping assembly of claim 118, wherein the stop spraying command is generated based on the release of a trigger on a spray gun, the spray gun being fluidly connected to the pump to receive pressurized spraying fluid output by the pump.

120. The pumping assembly according to any one of claims 116 to 118, wherein the spraying controller is configured to control the operation of the motor based on the target pressure threshold, the target pressure threshold being based on the spraying controller receiving a start spraying command.

121. The pumping assembly of claim 120, wherein the spraying initiation command is generated based on the pulling of a trigger on a spray gun, the spray gun being fluidly connected to the pump to receive pressurized spraying fluid output by the pump.

122. A spraying system, comprising: A spray gun, the spray gun including a valve, an electric actuator for driving the valve, a handle, a trigger, and a sensor for detecting the actuation of the trigger; Battery; The component controller is configured as follows: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; as well as Based on the signal, electrical energy is supplied to the electric drive; as well as Pumping assembly, including: Pump; An electric motor, configured to operate the pump; and A spraying controller is configured to start or stop the motor, the spraying controller being configured to control the operation of the motor based on a threshold pressure setting; The component controller is configured to provide pressure adjustment commands to the spray controller; and The spraying controller is configured to change the target pressure setpoint based on the pressure adjustment command.

123. The spraying system of claim 122, wherein both the component controller and the spraying controller are configured for unidirectional communication, wherein the spraying controller receives communication from the component controller, and the component is configured not to receive communication from the system controller.

124. The spraying system according to any one of claims 122 and 123, further comprising: A user interface configured to generate the pressure adjustment command.

125. The spraying system of claim 124, wherein the spraying controller is configured to increase the target pressure setpoint based on the pressure adjustment command.

126. The spraying system according to any one of claims 124 and 125, wherein: The user interface includes a first input and a second input; The first input is configured to generate a first pressure adjustment command, which causes the system controller to adjust the threshold pressure setting upward. as well as The second input is configured to generate a second pressure adjustment command, which causes the system controller to adjust the threshold pressure setting downward.

127. The spraying system of claim 126, wherein the first input is a first button and the second input is a second button.

128. The spraying system according to any one of claims 122 to 127, further comprising: A module supporting the battery, the module being connected to a supply hose that provides pressurized spray fluid from the pump, wherein the module is fluidly connected to the spray gun to provide the pressurized spray fluid to the spray gun; as well as The user interface is formed on the module.

129. The spraying system according to any one of claims 122 to 128, wherein the spraying controller is configured to increase the target pressure setpoint based on the pressure adjustment command.

130. A spraying control assembly for dispensing spraying fluid through a supply hose having a connector, the spraying control assembly comprising: A spray gun, the spray gun including a spray valve, a driver for driving the spray valve, a handle, a trigger, and a sensor for detecting the drive of the trigger; A conduit comprising at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; as well as Modules, including: An inlet connector, configured to be attached to the supply hose, to receive spray fluid from the pump of the sprayer into the module; Battery; Module housing; and A component controller, at least partially located within the module housing, is configured to: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; and Electrical energy is delivered to the actuator through one or more of the at least one electrical conductor of the conduit.

131. The spray gun system of claim 130, wherein the module housing supports the battery, the inlet connector, and the component controller.

132. The spray gun system of claim 131, wherein the spraying fluid received through the inlet connector is directed into the module housing and then delivered to the spray gun through the at least one hose.

133. The spray gun system according to any one of claims 131 and 132, wherein the proximal end of the conduit extends into the module housing such that a fluid connection with the proximal end of the conduit occurs within the module housing.

134. The spray gun system according to any one of claims 131 to 133, wherein the component controller controls the operation of the driver.

135. The spray gun system according to any one of claims 131 to 134, wherein the battery is mounted to the outside of the module housing such that the battery can be accessed without opening the module housing.

136. The spray gun system according to any one of claims 131 to 135, further comprising: A mounting base is attached to the module body, the mounting base being configured to facilitate attachment of the module housing to a user's body, enabling the module housing to be worn.

137. The spray gun system of claim 136, wherein the mounting base is attached to the strip.

138. The spray gun system of claim 137, wherein the belt is a belt.

139. The spray gun system according to any one of claims 130 to 138, wherein the module further comprises a fluid filter located downstream of the inlet connector.

140. The spray gun system of claim 139, wherein the fluid filter is accessible from the outside of the module for cleaning.

141. The spray gun system according to any one of claims 139 and 140, wherein the fluid filter is disposed within a filter housing, wherein the filter housing is partially disposed within the module body and partially disposed outside the module body, and wherein the inlet connector is connected to the filter housing.

142. The spray gun system according to any one of claims 130 to 141, further comprising a sheath extending to cover the at least one hose and the at least one electrical conductor.

143. The spray gun system according to any one of claims 130 to 141, wherein the distal end of the conduit extends into the spray gun such that the connection to the at least one hose and the at least one electrical conductor both occur within the spray gun.

144. The spray gun system according to any one of claims 130 to 143, wherein the component controller is configured to send a start signal to the pumping component, the start signal causing the pumping component to start operating the motor of the pumping component to drive the pump of the pumping component.

145. The spray gun system of claim 144, wherein the component controller is configured to send the start signal to the pumping assembly based on an indication received from the sensor that the trigger is actuated.

146. The spray gun system of any one of claims 130 to 145, wherein the component controller is configured to send a stop signal to the pumping component, the stop signal causing the pumping component to stop pumping the spray fluid.

147. The spray gun system of claim 146, wherein the component controller is configured to send the stop signal to the sprayer based on an indication received from the sensor that the trigger has been released from drive.

148. The spray gun system according to any one of claims 130 to 147, wherein the component controller communicates with the pumping component via a wired connection along the supply hose but not within the supply hose.

149. The spray gun system according to any one of claims 130 to 147, wherein the control circuit communicates with the pump of the sprayer via a wireless connection.

150. The spray gun system according to any one of claims 130 to 149, wherein the module does not include a pump.

151. The spray gun system according to any one of claims 130 to 150, wherein the spray gun does not include a battery.

152. The spray gun system according to any one of claims 130 to 151, wherein all control circuitry for operation, communication, and / or power supply to the spray gun is the component controller of the module.

153. The spray gun system according to any one of claims 130 to 152, wherein the module includes a filter manifold that houses a filter that is removable from the filter manifold.

154. The spray gun system of claim 153, wherein the filter manifold is at least partially housed within the module housing.

155. The spray gun system of claim 154, wherein the module housing completely accommodates the component controller.

156. The spray gun system according to any one of claims 154 and 155, wherein the filter manifold is rotatable within and relative to the module housing.

157. The spray gun system of claim 156, wherein the filter manifold is within the module housing and rotatable relative to the module housing, but is blocked from completing a full 360-degree rotation.

158. The spray gun system of claim 157, wherein the filter manifold is blocked by an annular member having at least one blocking tongue to complete the full 360-degree rotation.

159. The spray gun system of claim 158, wherein the annular element is located around the filter manifold.

160. The spray gun system according to any one of claims 156 to 159, wherein the rotatable filter manifold allows the conduit to rotate.

161. The spray gun system of claim 160, wherein the conduit is rotatable within the module housing.

162. The spray gun system according to any one of claims 155 to 161, wherein the filter manifold includes a filter housing and a filter cover threaded to the filter housing, wherein the filter cover is removable from the filter housing when the filter manifold is retained within the module housing.

163. The spray gun system of claim 162, wherein the supply hose is attached to the filter cover.

164. The spray gun system according to any one of claims 155 to 163, wherein a rotating device is located between the supply hose and the filter manifold, the rotating device allowing the supply hose to rotate relative to the filter manifold.

165. The spray gun system according to any one of claims 130 to 164, wherein the module further includes a module handle so that the module can be carried during spraying without wearing the module.

166. The spray gun system of claim 165, wherein the handle is connected to a worn mounting base.

167. The spray gun system of claim 166, wherein the handle is removable from the mounting base.

168. The spray gun system of claim 167, wherein the module handle is attached to the mounting base by resting on one or more hook arms of the mounting base.

169. The spray gun system according to any one of claims 167 and 168, wherein the handle is rotatable relative to the mounting base when held by the mounting base.

170. The spray gun system according to any one of claims 167 to 169, wherein the handle is cylindrical.

171. The spray gun system according to any one of claims 167 to 170, wherein the flow path of the spraying fluid passes axially through the handle along a flow axis passing through the handle.

172. The spray gun system according to any one of claims 167 to 171, wherein the component controller and the battery are both located below the handle.

173. The spray gun system according to any one of claims 167 to 172, wherein the handle is formed from a module housing.

174. The spray gun system of claim 173, wherein the orifice is located directly below the module handle and directly above a portion of the module housing, the module housing accommodating the component controller and supporting the battery.

175. The spray gun system according to any one of claims 130 to 174, wherein the conduit includes a sheath extending to cover and surround the at least one hose and the at least one electrical conductor, wherein the sheath extends from inside the spray gun into the module body, and the at least one electrical conductor extends from below the sheath within the module body.

176. The spray gun system of claim 175, wherein the at least one electrical conductor extends from below the sheath inside the spray gun.

177. A spraying control assembly for dispensing spraying fluid through a supply hose having a connector, the spraying control assembly comprising: A spray gun, the spray gun including a spray valve, a driver for driving the spray valve, a handle, a trigger, and a sensor for detecting the drive of the trigger; A conduit comprising at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; as well as Modules, including: An inlet connector, configured to be attached to the connector of the supply hose, to receive spraying fluid from the pump of the sprayer into the module; Battery; Module housing; and A component controller, at least partially disposed within the module housing, is configured to: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; and Electrical energy is delivered to the actuator through one or more of the at least one electrical conductor in the conduit; The module does not include a pump.

178. A spraying control assembly for dispensing spraying fluid through a supply hose having a connector, the spraying control assembly comprising: A spray gun, the spray gun including a spray valve, a driver for driving the spray valve, a handle, a trigger, and a sensor for detecting the drive of the trigger; A conduit comprising at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; as well as Modules, including: The module body has a main housing and a module handle spaced apart from the main housing; An inlet connector, supported by the module body and configured to be attached to the supply hose, receives spray fluid from the pump of the sprayer into the module; The battery is supported by the module body; and A component controller, at least partially disposed within the module housing, is configured to: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; and Electrical energy is delivered to the actuator through one or more of the at least one electrical conductor in the conduit; The flow path extends through the handle, such that the spraying fluid received through the inlet connector flows within the module handle between the inlet connector and the conduit.

179. The spray control assembly of claim 178, wherein the conduit is fluidly connected to the flow path at a location within the handle.

180. The spray control assembly according to any one of claims 178 and 179, wherein the inlet connector is disposed outside the module body.

181. The spray control assembly according to any one of claims 178 to 180, wherein the filter manifold is supported by the module body and the filter manifold is at least partially disposed within the handle.

182. The spray control assembly of claim 181, wherein the filter manifold includes a filter housing at least partially disposed within the module handle, and a filter disposed within the filter housing.

183. The spray control assembly according to any one of claims 181 and 182, wherein the filter manifold is rotatable relative to the handle, and the filter manifold is prevented from completing a full 360-degree rotation.

184. The spray control assembly of claim 183, wherein the conduit is connected to the filter manifold such that the conduit and the filter manifold can rotate together.

185. The spray control assembly according to any one of claims 178 to 184, wherein a plurality of module arms extend between and connect the module handle and the main housing.

186. The spray control assembly of claim 185, wherein module holes are formed at the intervals between the module handle, the main housing, and the plurality of module arms.

187. The spray control assembly according to any one of claims 178 to 186, wherein the assembly controller is disposed within the main housing, and the battery is supported by the main housing.

188. The spray control assembly according to any one of claims 178 to 187, wherein the sheath of the conduit terminates within the module handle such that the at least one hose and the at least one electrical conductor extend from below the sheath at locations within the module handle.

189. A spraying control assembly for dispensing spraying fluid through a supply hose having a connector, the spraying control assembly comprising: A spray gun, the spray gun including a spray valve, a driver for driving the spray valve, a handle, a trigger, and a sensor for detecting the drive of the trigger; A conduit comprising at least one hose and at least one electrical conductor, the conduit having a distal end and a proximal end, the distal end being connected to the spray gun to deliver spray fluid to the spray valve and to deliver electrical energy to the actuator; as well as Modules, including: Module body; A filter manifold, supported by the module body, is at least partially disposed within the module body and includes a filter housing and a filter within the filter housing; An inlet connector, supported by the filter housing and configured to be attached to the supply hose, receives sprayed fluid into the filter manifold; The battery is supported by the module body; and A component controller, at least partially disposed within the module housing, is configured to: Receive electrical energy from the battery; Receive a signal from the sensor indicating that the trigger is driven; and Electrical energy is delivered to the actuator through one or more of the at least one electrical conductor of the conduit.

190. The spray control assembly of claim 189, wherein the filter manifold is rotatable relative to the module body, and the filter manifold is prevented from completing a full 360-degree rotation.

191. The spray control assembly of claim 190, wherein the annular member extends around the outside of the filter housing and engages with the filter housing to rotatably restrict the filter manifold.

192. The spray control assembly of claim 191, wherein the annular member includes an annular tongue, and the filter housing includes a filter tongue, the annular tongue circumferentially overlapping the filter tongue to prevent the filter tongue from rotating circumferentially about the axis.

193. The spray control assembly according to any one of claims 190 to 192, wherein the conduit is connected to the filter manifold such that the conduit is rotatably fixed relative to the filter manifold.

194. The spray control assembly according to any one of claims 189 to 193, further comprising: An axial retainer extends into a groove formed on the outside of the filter housing, wherein the axial retainer prevents the filter manifold from axially displacing relative to the module body.

195. The spray control assembly according to any one of claims 189 to 194, wherein the filter manifold includes a filter cover that can be mounted to the filter housing to secure the filter within the filter housing, wherein the filter cover includes the inlet connector.

196. The spray control assembly according to any one of claims 189 to 195, wherein the inlet connector includes a rotating device that is freely rotatable relative to the module body.

197. A spray gun, comprising: The gun body has a handle; trigger; A solenoid coil is disposed within the gun body; A core, which can be installed into the spray gun, the core comprising: A cylindrical core that defines a fluid chamber and has an inlet and an outlet; A spray valve, disposed within the core body, the spray valve comprising a drivable seal fluidly located between the inlet and the outlet; and A plunger, connected to the spray valve, is configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, in which the inlet is fluidly connected to the outlet; During the installation and removal of the cylinder core, the trigger remains stationary.

198. A spray gun, comprising: The gun body has a handle; trigger; Solenoid coil, inside the gun body; A core, which can be installed into the spray gun, the core comprising: A cylindrical core that defines a fluid chamber and has an inlet and an outlet; A spray valve, disposed within the core body, the spray valve comprising a drivable seal fluidly located between the inlet and the outlet; and A plunger, connected to the spray valve, is configured to move by an electromagnetic field generated by the solenoid coil to drive the spray valve to an open state, in which the inlet is fluidly connected to the outlet; All mechanical actuators used to switch the opening and closing of the spray valve are integral components of the cylinder core, such that the mechanical actuators are installed with and removed from the cylinder core.

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