HANDHELD PAINT SPRAYER

Description

[0001] The invention relates to a handheld paint sprayer according to the preamble of claim 1.

[0002] From DE 10 2016 107 465 A1 a handheld paint sprayer is known which comprises a housing with a handle, a spray head and a blower motor, wherein the paint sprayer includes a receiving space for the blower motor and wherein the receiving space includes an air inlet and an air outlet.

[0003] From US patent 2005 / 269425 A1 1, a spray gun for atomizing paints, varnishes, or similar media is known, which can be supplied to a workpiece by means of an airflow, wherein the spray gun can be actuated by a lever pivotably mounted on a sleeve receiving an atomizing nozzle, and the airflow can be generated by an air turbine associated with the spray gun, wherein the air turbine and its electric drive motor are arranged coaxially or nearly coaxially to the atomizing nozzle of the spray gun on the side of a handle opposite the sleeve carrying the atomizing nozzle, such that the airflow from the air turbine can be supplied in a straight line or nearly in a straight line through the sleeve of the atomizing nozzle, and that the air turbine is provided with a silencer.

[0004] A spray gun is known from WO 2021 / 098781 A1; this includes: a first housing; a fan module (20) housed in the first housing (10) and used to generate an airflow, the fan module (20) comprising a brushless motor (202) and a fan (204); a nozzle assembly (32) comprising a nozzle with a liquid outlet; and a spray bar assembly (34) designed to move relative to the nozzle along a longitudinal axis thereto to open or close the liquid outlet.

[0005] US patent 7,303,149 B1 describes an automatic spray gun, which includes a cylinder in which a motor and a turbine are arranged and which is sealed by a sealing cap and an outer cap, a sleeve which is integrated vertically into the lower circumference of the cylinder, a container cap which is integrated into the bottom of the sleeve and covers a paint container, a Y-shaped pressure medium which is suspended on an axial rod at the top of the sleeve, a nozzle with a group of fittings which engage in the sleeve, a first half-handle which is integrated into the bottom of the cylinder and connected by screws to a second half-handle, a tube, a hair switch and a number of electrical wires which are arranged in the handle to connect the motor to electrical energy via the switch which controls the rotation of the motor.

[0006] The invention is based on the objective of developing an improved handheld paint sprayer.

[0007] This problem is solved by means of the characterizing features of claim 1, starting from the features of the preamble of claim 1. Advantageous and expedient embodiments are specified in the dependent claims.

[0008] The handheld paint sprayer comprises a housing with a handle, a spray head, and a blower motor. The paint sprayer includes a housing for the blower motor, the housing comprising an air inlet and an air outlet. The housing is designed as a pressure chamber, and in addition to a first opening formed by the air inlet and a second opening formed by the air outlet, the pressure chamber is equipped with a third opening, which is arranged, in particular, opposite the first opening. This opening allows heat to be dissipated from the control board out of the pressure chamber.

[0009] According to the invention, the third opening is closed by a control board. This ensures that the function of the pressure chamber is maintained despite the presence of a third opening.

[0010] Furthermore, the intake chamber is designed such that a first plane, containing a cross-sectional area of ​​the air inlet, and a second plane, containing a cross-sectional area of ​​the air outlet, intersect at approximately right angles, specifically at an angle between 70° and 110° to each other, with the air outlet opening towards the spray head. Tests have shown that this arrangement of the air inlet alone, without altering the performance of the paint sprayer, reduces the noise emissions from the paint sprayer affecting the user.

[0011] Furthermore, it is also planned to equip the pressure chamber with a sealing ring, whereby the sealing ring is arranged on an inner side of the pressure chamber in such a way that it surrounds the third opening. This makes it possible to seal the pressure chamber with a flat body.

[0012] It is also planned to install the blower motor, together with the control board attached to it, in an interior space of the pressure chamber in such a way that the control board rests against the sealing ring and seals the third opening. In particular, it is planned that the control board includes a connecting cable which is routed through the third opening into the handle. This reliably seals the pressure chamber against air leakage through the third opening. Furthermore, this eliminates the need for an additional opening in the pressure chamber for the power supply and communication connection of the blower motor.

[0013] It is also planned to design the pressure chamber in two parts, with an upper shell of the pressure chamber positively accommodating a blower housing and screwed to a lower shell of the pressure chamber in such a way that the control board is pressed against the sealing ring in the area of ​​the third opening. This means that only one connection between the upper and lower shells is necessary for attaching and positioning the blower motor.

[0014] Furthermore, it is planned to align the blower motor with its axis of rotation eccentrically to a central axis of a motor mounting area in the pressure chamber. This allows the spatial conditions in the pressure chamber to be influenced in such a way that the air blown out by the blower motor at the air outlet flows towards the second opening of the pressure chamber.

[0015] It is also intended to form a flow space below the blower between the electric drive and an inner side of the pressure chamber, wherein a distance measured radially to the axis of rotation of the electric drive between the electric drive and the inner side of the pressure chamber increases on both sides of the electric drive in such a way that the flow space towards the second opening is formed as a first flow channel widening on a left side of the electric drive and as a second flow channel widening on a right side of the electric drive for air conveyed by the blower, wherein the left flow channel and the right flow channel merge into a collecting channel leading to the second opening.This allows the spatial conditions in the pressure chamber to be further influenced in such a way that the air blown out by the blower motor at the air outlet is encouraged to flow towards the second opening of the pressure chamber.

[0016] It is also planned to equip the housing with a handle, whereby a longitudinal axis defined by the handle and a rotational axis of the blower motor are aligned approximately parallel to each other. Such a diagonal installation of the blower motor allows for the production of a compact paint sprayer, particularly with regard to its overall length.

[0017] Finally, the third opening is designed to be semicircular in cross-section. This provides tamper protection for the control board without the need for additional components.

[0018] Furthermore, it is provided that the blower motor, which includes the electric drive and the blower, is equipped with an energy storage device and, in particular, that the handle is fitted with a coupling at its end opposite the housing for the mechanical and electrical connection of the energy storage device. Such a blower motor, forming a single unit, allows for the assembly of the paint sprayer in just a few steps.

[0019] It is also intended to design the electric drive as a brushless direct current electric drive, also known as a BLDC electric drive, which includes the control board connected to a motor housing, with the control board being arranged opposite the blower. Designing the blower motor with such an electric drive further simplifies the assembly of the paint sprayer, as separate mounting of the control board is no longer necessary. Furthermore, in conjunction with the features of claim 1, it is ensured that the control board does not impede the airflow despite its arrangement on the motor housing.

[0020] Furthermore, it is planned to equip a blower driven by the electric drive with a blower housing, wherein an intake duct of the blower housing carries intake air in the direction of the electric drive's axis of rotation, the blower housing is equipped with an exhaust duct through which exhaust air flows in the direction of the electric drive's axis of rotation and has an annular cross-section, and the blower is equipped with a fan wheel, which is housed in the blower housing and is designed, in particular, as a radial fan wheel. Such a blower design allows for a compact blower motor construction adapted to the electric drive.

[0021] It is also planned to form the intake chamber using the pressure chamber, with the pressure chamber being housed within the interior of the casing, and a cavity formed between the pressure chamber and the casing. This eliminates the need for the casing to function as a pressure chamber, allowing it to be better adapted to its other requirements. Simultaneously, this design creates a cavity that can function as an intake chamber.

[0022] Furthermore, it is planned to form the cavity in the area of ​​the pressure chamber's air inlet, and in particular, to form the cavity above the pressure chamber or above and behind the pressure chamber. It is also specifically planned to equip the housing with an air inlet grille with air inlet slots in an area of ​​the cavity located behind the pressure chamber when viewed in the spray direction. This ensures a good supply of air to the air inlet. At the same time, it is ensured that the noise generated by the blower motor reaches the air inlet grille only indirectly, thus providing sound insulation.

[0023] It is also planned to install an air filter between the pressure chamber and the air intake grille. This filter will not only clean the intake air but also provide sound insulation towards the user.

[0024] For the purposes of the invention, a blower motor is a unit comprising an electric drive and a blower.

[0025] For the purposes of the invention, with reference to claim 1, an approximately right-angled intersection of two planes is understood to mean that the planes intersect at an angle between 70° and 110°.

[0026] Further details of the invention are described in the drawing with reference to a schematically illustrated embodiment. To maintain clarity, cross-sectional areas are not shown hatched.

[0027] This shows: Figure 1: a partially cutaway and partially schematic side view of a handheld paint sprayer according to the invention; Figure 2: a perspective view of the housing of the device shown in the Figure 1 paint sprayer shown; Figure 3: an exploded view of the paint sprayer shown in the Figure 2shown housing including components of the paint sprayer installed in the housing; Figure 4: a partially cutaway view of the housing of the paint sprayer shown in the Figure 1 Figure 5: a perspective view of the pressure chamber installed in the housing with the blower motor installed; Figure 6: a side view of the pressure chamber installed in the housing with the blower motor installed; Figure 7: an exploded view of the Figure 5 components shown; Figure 8: a perspective view of the lower shell of the pressure chamber; Figure 9: a top view of the components shown in the Figure 8 shown lower shell of the pressure chamber; Figure 10: a perspective bottom view of the one shown in the Figure 8 and 9 Figure 11: a cutaway perspective view of the lower shell of the pressure chamber with the blower motor installed; Figure 12: an enlarged view of individual components in the Figure 4shown components in unique selling points.

[0028] In the Figure 1 A handheld paint sprayer 1 according to the invention is shown in a partially cutaway and partially schematic side view. The paint sprayer 1 is designed as an HVLP paint sprayer 2, namely a high-volume, low-pressure paint sprayer 2. The paint sprayer 1 comprises a housing 3 with a handle 4, a spray head 5, a receiving chamber 6 arranged in the housing 3, and a blower motor 7 received in the receiving chamber 6 (see figure). Figure 3 The recording chamber 6 includes an air inlet 6a and an air outlet 6b.

[0029] In the Figure 2 is a perspective view of housing 3 of the in the Figure 1 The paint sprayer shown is 1.

[0030] The Figure 3 shows an exploded view of the [unclear] in the Figure 2shown housing 3 including some of the components of the paint sprayer 1 installed in housing 3, which include, for example, the blower motor 7.

[0031] The Figure 4 shows a partially cutaway view of housing 3 of the [device / system] in the Figure 1 Paint sprayer shown 1.

[0032] Recording room 5 is in the Figure 5 in perspective view and in the Figure 6 Shown in side view. The receiving chamber 6 is designed as a pressure chamber 8 and comprises an upper shell 8a and a lower shell 8b. In the exploded view of the Figure 3 Only the lower shell 8b is shown. Figure 7 shows an exploded view of the [unclear] in the Figures 5 and 6 components shown, namely the upper shell 8a and the lower shell 8b of the pressure chamber 8, which forms the receiving space, as well as the blower motor 7 received in the pressure chamber 8.

[0033] As can be seen in particular from the Figure 6in conjunction with the Figure 7 As can be seen, a first plane E1, in which a cross-sectional area Q6a of the air inlet 6a lies, and a second plane E2, in which a cross-sectional area Q6b of the air outlet 6b lies, intersect approximately at right angles at an angle α of approximately 100°. The air outlet 6b formed on the lower shell 8b opens towards the spray head 5 (see Figure 1 The blower motor 7 is installed in the air inlet 6a.

[0034] As from the Figure 1 As can be seen, the spray head 5 of the paint sprayer 1 also includes a nozzle 9 and a container 10 for paint. The nozzle 9 is arranged opposite the air outlet 6b.

[0035] Figure 8 shows a perspective view of the lower shell 8b of pressure chamber 8. Figure 9 shows a top view of the area in the Figure 8 lower shell 8b of pressure chamber 8 shown. Figure 10 shows a perspective bottom view of the area in the Figure 8 and 9 shown lower shell 8b of pressure chamber 8 with blower motor 7 installed. Figure 11 shows a cutaway perspective view of the lower shell 8b of the pressure chamber 8 with the blower motor 7 installed.

[0036] The blower motor 7 comprises an electric drive 11 and a blower 12 (see Figure 7 and 11 ). The paint sprayer 1 (see Figure 1 The housing 3 comprises an energy storage device 13, which is designed as an electric accumulator and from which the electric drive 11 is powered. Opposite the housing 3, the handle 4 includes a coupling 14 for the mechanical and electrical contact of the energy storage device 13. The paint sprayer 1 is thus designed as a battery-operated HVLP paint sprayer.

[0037] The electric drive 11 (see in particular) Figure 7 and 11) is designed as a BLDC electric drive 15 and includes a control board 17 connected to its motor housing 16. The control board 17 is arranged opposite the blower 12 with respect to a rotary axis D11 of the electric drive 11.

[0038] The blower 12 comprises a blower housing 18 (see in particular Figure 11 During operation of the paint sprayer 1, intake air 20 flows through an intake duct 19 of the blower housing 18 in the direction of the axis of rotation D11 of the electric drive 11. The blower housing 18 also includes an exhaust duct 21. The exhaust duct 21 has an annular cross-section Q21. During operation of the paint sprayer 1, exhaust air 22 flows through this duct in the direction of the axis of rotation D11 of the electric drive 11. The blower 12 also includes a fan wheel 23, which is housed in the blower housing 18 and driven by the electric drive 11. The fan wheel 23 is designed as a radial fan wheel 24.

[0039] The pressure chamber 8 is received in an interior space 26 of the housing 3 and a cavity 27 is formed between the pressure chamber 8 and the housing 3 (see in particular Figure 1 ).

[0040] Here, the cavity 27 is located in the area of ​​the air inlet 6a of the receiving chamber 6, which is designed as a pressure chamber 8. The aforementioned cavity 27 is located above the pressure chamber 8 and – viewed in a spray direction x of the paint sprayer 1 – behind the pressure chamber 8 (see in particular Figure 1 Furthermore, the housing 3 includes an air inlet grille 28 with air inlet slots 29, which are only shown as examples, in a region of the cavity 27 located behind the pressure chamber 8. An air filter 30 is arranged between the pressure chamber 8 and the air inlet grille 28, which partially fills the part of the cavity 27 located behind the pressure chamber (see Figure 1 and 3 ).

[0041] In addition to a first opening 31 formed by the air inlet 6a and a second opening 32 formed by the air outlet 6b, the pressure chamber 8 includes a third opening 33, which is arranged opposite the first opening 31 (see in particular Figure 6 , 8 to 11 ).

[0042] With the blower motor 7 installed, the third opening 33 is closed by the control board 17 8 (see Figures 10 and 11 To achieve an airtight seal of the third opening 33, the pressure chamber 8 includes a sealing ring 34, which is located in the Figure 11 The sealing ring 34 is recognizable by its two cut surfaces. It is arranged on an inner surface 35 of the pressure chamber 8 such that it surrounds the third opening 33.

[0043] The blower motor 7, together with the control board 17 attached to it, is installed in an interior space 36 of the pressure chamber 8 such that the control board 17 rests against the sealing ring 34 and thereby seals the third opening 33. The control board 17 includes a connecting cable 37, which is led through the third opening 33 into the handle 4.

[0044] The pressure chamber 8 is designed in two parts, wherein an upper shell 38 of the pressure chamber 8 receives the blower housing 18 in a form-fitting manner and is screwed to a lower shell 39 of the pressure chamber 8 in such a way that the control board 17 is pressed against the sealing ring 34 in the area of ​​the third opening 33 (see in particular Figures 5 and 7 ). Some of the screws 25a to 25e used for fastening are in the Figure 5 symbolized by lines.

[0045] The blower motor 7 or the electric drive 11 is aligned with its axis of rotation D11 eccentrically by an eccentricity e to a central axis M40 of a motor mounting area 40 of the pressure chamber 8. This is evident from the Figure 9 The figure shows a top view of the lower shell 8b of the pressure chamber 8 and includes the axis of rotation D11 and the central axis M40. The eccentricity e is also shown in the Figure 11 hinted at.

[0046] Below the blower 12, above the control board 17, between the electric drive 11 - in the Figure 9The flow space 41 is schematically indicated by dashed lines and is formed on the inner side 35 of the pressure chamber 8. A distance measured radially to the axis of rotation D11 of the electric drive 11 between the electric drive 11 and the inner side 35 of the pressure chamber 8 increases from a value a1 to values ​​a2R, a3R, a2L, and a3L on both sides of the electric drive 11, starting from a rear wall 42 opposite the second opening 32 of the pressure chamber 8, such that the flow space 41 forms a first flow channel 43 widening on the left side of the electric drive 11 and a second flow channel 44 widening on the right side of the electric drive 11 for air conveyed by the blower 12. The left flow channel 43 and the right flow channel 44 merge into a collecting channel 45 leading to the second opening 32. Here, the collecting channel 45 is formed in the pressure chamber 8.

[0047] A longitudinal axis L4 defined by the handle 4 and the axis of rotation D11 of the blower motor 7 are aligned approximately parallel to each other (see Figure 1 ).

[0048] The third opening 33 of the pressure chamber 8 is designed as a semicircular opening in cross-section (see in particular Figure 10 Accordingly, the control board is only accessible through the third opening 33 in the area near the second opening 33 and is otherwise protected by the pressure chamber 8. This prevents a user who removes the air intake grille 28 to replace the air filter 30 from accidentally touching the control board 17 (see in particular [reference]). Figure 3 ).

[0049] From the Figure 10It is further evident that the blower motor 7 is supplied with power through the third opening 33 of the pressure chamber 8. An example of a connection cable AK with two wires K1 and K2, which are connected to the control board 17, is shown. The connection cable AK is routed through the handle 4. The complete blower motor 7 is installed as follows: the blower motor 7, with the control board 17 facing forward, is placed into the lower shell 8b, with the control board 17 resting on the sealing ring 34 pre-mounted in the lower shell 8b. Then the upper shell 8a is placed onto the blower 12 of the blower motor 7 and screwed to the lower shell 8b. In this case, the blower motor 7 is aligned in the pressure chamber 8 by the blower 12, which is partially immersed through the upper shell 8a, and the control board 17, which is positively fitted into the lower shell 8b.

[0050] In the Figure 12 is an enlarged view of individual parts in the Figure 4 The components shown are presented individually. The paint sprayer 1 includes an actuating ring 46, which – as shown in the Figure 3 The actuating ring 46 is located in the area of ​​the second opening 32 on the pressure chamber 8 and is rotatably mounted between the pressure chamber 8 and side shells 3a, 3b of the housing 3. The actuating ring 46 comprises an actuating element 47 and a lug 48. The actuating element 47 allows the actuating ring 46 to be rotated such that an electrical push button 49 mounted on the housing 3 is actuated by the lug 48. Power is supplied to the control board 17 via the electrical push button 49, so that the control board 17 – as soon as the push button 49 is actuated – enters a standby mode in which a virtually delay-free start-up of the BLDC electric drive 15 is possible when a trigger 50 is released (see Figure 1) and a slide 51 moved by it opens the nozzle 9 and a second electric button 52 is activated, via which a "Motor ON" signal is sent to the control board 17. The "Motor ON" signal can only be processed by the control board 17 if the first button 49 is pressed; otherwise, the electric drive 11 is not activated. Thus, power consumption when the paint sprayer 1 is not in use can be completely avoided, and at the same time, a rapid start-up of the blower motor 7 is ensured, so that droplet formation at the nozzle at the start of spraying is reliably prevented. Reference symbol list:

[0051] 1 Handheld paint sprayer 2 HVLP paint sprayer 3 Housing 3a, 3b Side panel of 3 4 Handle 5 Spray head 6 Storage chamber 7 Blower motor 6a Air inlet 6b Air outlet 8 Pressure chamber 8a Top shell 8b Bottom shell 9 Nozzle 10 Container 11 Electric drive 12 Blower 13 Energy storage 14 Coupling 15 BLDC electric drive 16 Motor housing of 11 17 Control board 18 Blower housing 19 Intake duct of 18 20 Intake air 21 Exhaust duct of 18 22 Exhaust air 23 Blower wheel of 18 24 Radial blower wheel 25a-25e Screw of 8 26 Interior of 3 27 Cavity between 25 and 3 28 Air inlet grille 29 Air intake slot 30 Air filter 31 First opening of 8 32 Second opening of 8 33 Third opening of 8 34 Sealing ring of 8 35 Inner sides of 8 36 Interior of 8 37 Connection cable of 17 38 Top shell of 25 39 Bottom shell of 25 40 Motor mounting area of ​​25 41 Flow chamber 42 Rear wall of 8 opposite 32 43 First, left flow channel 44 Second,right flow channel 45 Collector channel 46 Actuating ring 47 Actuating element 48 Nose 49 First electric button 50 Trigger 51 Slider 52 Second electric button α Angle α a1 Distance a2L, a3L Distances in left flow channel 43 a2R, a3R Distances in right flow channel 44 AK Connection cable D11 Axis of rotation of 11 E1 First level E2 Second level K1, K2 Line L4 Longitudinal axis of 4 M40 Central axis of 40 Q6a Cross-sectional area Q6a of air inlet 6a Q6b Cross-sectional area Q6b of air outlet 6b Q21 Cross-section of 21 x Spray direction e Eccentricity,

Claims

1. Hand-held paint sprayer (1) comprising - a housing (3) having a handle (4); - a spray head (5); - a fan motor (7); - wherein the paint sprayer (1) comprises a receptacle space (6) for the fan motor (7); - wherein the receptacle space (6) comprises an air inlet (6a) and an air outlet (6b); - wherein the receptacle space (6) is configured as a pressurized chamber (8); - wherein the pressurized chamber (8) - in addition to a first opening (31) formed by the air inlet (6a) and a second opening (32) formed by the air outlet (6b) - comprises a third opening (33) which is in particular disposed opposite the first opening (31), characterized in that the third opening (33) is closed by a control circuit board (17).

2. Hand-held paint sprayer according to Claim 1, characterized in that the receptacle space (6) is configured in such a manner that a first plane (E1), in which lies a cross-sectional area (Q6a) of the air inlet (6a), and a second plane (E2), in which lies a cross-sectional area (Q6b) of the air outlet (6b), intersect approximately orthogonally and that the air outlet (6b) opens toward the spray head (5).

3. Hand-held paint sprayer according to at least either of the preceding claims, characterized in that the pressurized chamber (8) comprises a seal ring (34), wherein the seal ring (34) is disposed on an internal side (35) of the pressurized chamber (8) in such a manner that said seal ring (34) encircles the third opening (33).

4. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the fan motor (7), conjointly with the control circuit board (17) fastened thereto, is installed in an interior space (26) of the pressurized chamber (8) in such a manner that the control circuit board (17) bears on the seal ring (34) and closes the third opening (33) in a sealing manner, wherein it is provided in particular that the control circuit board (17) comprises a connecting cable (AK) which is routed via the third opening (33) into the handle (4).

5. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the pressurized chamber (8) is configured in two parts, wherein an upper shell (8a) of the pressurized chamber (8) receives in a form-fitting manner a fan housing (18) and is screwed to a lower shell (8b) of the pressurized chamber (8) in such a manner that the control circuit board (17) is pressed against the seal ring (34) in the region of the third opening (33).

6. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the fan motor (7) by way of its rotation axis (D11) is aligned eccentrically in relation to a central axis (M40) of a motor receptacle region (40) of the pressurized chamber (8) .

7. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the fan motor (7) comprises an electric drive (11) and a fan (12), wherein a flow chamber (41) is configured below the fan (12) between the electric drive (11) and an internal side (35) of the pressurized chamber (8), wherein a spacing (a1, a2L, a3L, a2R, a3R), measured radially to the rotation axis (D11) of the electric drive (11) between the electric drive (11) and the internal side (35) of the pressurized chamber (8), proceeding from a rear wall (42) opposite the second opening (32) of the pressurized chamber (8), increases on both sides of the electric drive (11) in such a manner that the flow chamber (41) toward the second opening (32) is configured as a first flow duct (43), which widens on a left side of the electric drive (11), and as a second flow duct (44), which widens on a right side of the electric drive (11), for air conveyed by the fan (12), wherein the left flow duct (43) and the right flow duct (44) transition into a collective duct (45) which leads to the second opening (32).

8. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that a longitudinal axis (L4), which is defined by the handle, and a rotation axis (D11) of the fan motor (11) are aligned so as to be approximately parallel to one another.

9. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the third opening (33) is configured as an opening which is semicircular in cross section.

10. Hand-held paint sprayer according to Claim 7, characterized in that - it is provided that the paint sprayer (1) comprises an energy accumulator (13); and - it is provided in particular that the handle (4), proximal to the end opposite the housing (3), comprises a coupling (14) for mechanically and electrically coupling the energy accumulator (13).

11. Hand-held paint sprayer according to Claim 10, characterized in that - the electric drive (11) is configured as a BLDC electric drive (15) and comprises the control circuit board (17) connected to a motor housing (16); - wherein the control circuit board (17) is disposed opposite the fan (12).

12. Hand-held paint sprayer according to at least one of preceding Claims 7 or 8-11, where referred back to Claim 7, characterized in that - the fan (12) driven by the electric drive (11) comprises a / the fan housing (18), wherein an intake duct (19) of the fan housing (18) is passed through by a flow of induction air (20) in the direction of a rotation axis (D11) of the electric drive (11); - the fan housing (18) comprises an exhaust duct (21) which is passed through by a flow of exhaust air (22) in the direction of the rotation axis (D11) of the electric drive (11) and which has an annular cross section; and - the fan (12) comprises a fan wheel (23) which is received in the fan housing (18) and is in particular configured as a radial fan wheel (24).

13. Hand-held paint sprayer according to at least one of the preceding claims, characterized in that the pressurized chamber (8) is received in the interior space (26) of the housing (3), and wherein a cavity (27) is configured between the pressurized chamber (8) and the housing (3).

14. Hand-held paint sprayer according to Claim 13, characterized in that the cavity (27) is configured in the region of the air inlet (6a) of the pressurized chamber (8), and in that it is provided in particular that the cavity (27) is configured above the pressurized chamber (8), or above and behind the pressurized chamber (8), and in that it is provided in particular that the housing (3), in a region of the cavity (27) which lies behind the pressurized chamber (8) when viewed in the spraying direction (x), comprises an air inlet mesh (28) having air inlet slots (29).

15. Hand-held paint sprayer according to Claim 14, characterized in that an air filter (30) is disposed between the pressurized chamber (8) and the air inlet mesh (28).