CN216851644U - Electric spray gun motor cooling structure - Google Patents
Electric spray gun motor cooling structure Download PDFInfo
- Publication number
- CN216851644U CN216851644U CN202122703216.2U CN202122703216U CN216851644U CN 216851644 U CN216851644 U CN 216851644U CN 202122703216 U CN202122703216 U CN 202122703216U CN 216851644 U CN216851644 U CN 216851644U
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- China
- Prior art keywords
- motor
- inner container
- assembly
- fan blade
- fan
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000007921 spray Substances 0.000 title claims abstract description 20
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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Abstract
A motor cooling structure of an electric spray gun comprises a gun body, an inner container, a fan assembly and an inner container rear cover. The front end of the inner container is connected with the gun body, the rear end of the inner container is connected with the inner container rear cover, and the inner container rear cover is provided with an air inlet; the fan assembly is arranged in the liner and comprises a motor, a fan blade and a fan blade cover assembly, the motor is provided with a motor shell, the motor shell is connected with the fan blade cover assembly, one part of the motor shell extends into the fan blade cover assembly, the other part of the motor shell is positioned outside the fan blade cover assembly, and the fan blade is connected with a motor output shaft extending into the fan blade cover assembly; the motor cooling structure comprises a heat dissipation opening and an air guide cover which are arranged on the other part of the side surface of the motor shell; the wind scooper surrounds the other part of the motor shell, the wind scooper comprises a wind shield front part and a wind shield rear part which are sequentially connected, the shape of the wind shield front part is the same as that of the motor shell, and the wind shield rear part is connected with the wind blade cover assembly. The utility model can improve the cooling effect of the electric spray gun motor.
Description
Technical Field
The present invention relates to spray guns for spraying paint.
Background
The existing electric spray gun comprises a gun body, an inner container, a fan assembly, a rear cover of the inner container and the like. The front end and the rear end of the inner container are respectively connected with the gun body and the inner container rear cover, and the fan assembly is arranged in the inner container. The fan assembly comprises a motor, a fan and a fan blade cover assembly, one part of the motor shell extends into the fan blade cover assembly, the other part of the motor shell is positioned outside the fan blade cover assembly, and the fan blade is connected with a motor output shaft extending into the fan blade cover assembly. When the motor is powered on to rotate, the fan blades rotate synchronously along with the motor to obtain required wind energy, and the wind is sprayed out from the nozzle of the gun body, so that the atomization spraying effect is achieved.
In the existing electric spray gun, the heat dissipation of the motor is mainly realized by a heat dissipation opening arranged on the side surface of the other part of the motor shell, and because the air pressure inside the motor is basically the same as the air pressure outside the motor, the air flow effect is poor, the cooling effect on the motor is not ideal enough, and the service life of the motor is influenced.
Disclosure of Invention
The utility model aims to provide a motor cooling structure capable of improving the cooling effect of a motor of an electric spray gun.
The electric spray gun comprises a gun body, an inner container, a fan assembly and an inner container rear cover; the front end of the inner container is connected with the gun body, the rear end of the inner container is connected with the inner container rear cover, and the inner container rear cover is provided with an air inlet; the fan assembly is arranged in the liner and comprises a motor, a fan blade and a fan blade cover assembly, the motor is provided with a motor shell, the motor shell is connected with the fan blade cover assembly, one part of the motor shell extends into the fan blade cover assembly, the other part of the motor shell is positioned outside the fan blade cover assembly, and the fan blade is connected with a motor output shaft extending into the fan blade cover assembly; the motor cooling structure comprises a heat dissipation opening arranged on the other part of the side surface of the motor shell, and is characterized by also comprising an air guide cover; the wind scooper surrounds the other part of the motor shell, the wind scooper comprises a wind shield front part and a wind shield rear part which are sequentially connected, the shape of the wind shield front part is the same as that of the motor shell, and the wind shield rear part is connected with the wind blade cover assembly.
The utility model has at least the following advantages:
the air guide cover is arranged in the embodiment of the utility model, the air flow speed in the gap between the motor shell and the air guide cover is accelerated under the action of the air guide cover to form pressure difference, the air pressure in the motor shell is greater than that in the gap, and the air in the motor drives heat generated by the motor to flow out through the heat dissipation port, so that the effect of improving the cooling effect of the motor is achieved, and the service life of the motor is prolonged.
Drawings
Fig. 1 shows an exploded view of an electric spray gun motor cooling arrangement according to an embodiment of the present invention.
FIG. 2 illustrates an exploded view of a fan assembly and a wind scooper assembly according to an embodiment of the present invention.
FIG. 3 shows a cross-sectional schematic view of a motor cooling structure of an electric spray gun according to an embodiment of the present invention.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
Please refer to fig. 1 to fig. 3. The electric spray gun of the embodiment of the utility model comprises a gun body 1, an inner container 2, a fan assembly 3 and an inner container rear cover 4.
The front end of the inner container 2 is connected with the gun body 1 in a buckling way, the rear end of the inner container 2 is connected with the inner container rear cover 4, and the inner container rear cover 4 is provided with an air inlet (not shown in the figure).
The fan assembly 3 is arranged in the liner 2, the fan assembly 3 comprises a motor 31, fan blades 32 and a fan blade cover assembly 33, the motor 31 is provided with a motor shell 311, the motor shell 311 is connected with the fan blade cover assembly 33, one part 311a of the motor shell 311 extends into the fan blade cover assembly 33, the other part 311b of the motor shell 311 is positioned outside the fan blade cover assembly 33, and the fan blades 32 are connected with a motor output shaft 312 extending into the fan blade cover assembly 33.
The blade cover assembly 33 includes a blade cover 33a and a flow guide member 33b, the flow guide member 33b is disposed in the blade cover 33a, and a circumferential surface of the flow guide member 33b is in interference fit with an inner side surface of the blade cover 33 a. The guide member 33b is provided with a plurality of guide grooves 333. The motor housing 311 and the air guide member 33b are detachably coupled together by screws. In other embodiments, the air guide member 33b is connected to the blade cover 33a by a snap connection.
The motor cooling structure of the embodiment of the present invention includes a heat dissipation opening 313 and an air guiding cover 5 disposed on the side surface of the other portion 311b of the motor housing 311.
The wind scooper 5 surrounds the other part 311b of the motor housing 311, the wind scooper 5 includes a wind shield front portion 5a and a wind shield rear portion 5b connected in sequence, the shape of the wind shield front portion 5a is the same as that of the motor housing 311, and the wind shield rear portion 5b is connected to the blade cover assembly 33.
In this embodiment, the motor housing 311 and the front portion 5a of the fan housing are both cylindrical; the shape of the fan housing rear portion 5b is a circular truncated cone shape, and the outer diameter of the fan housing rear portion 5b gradually increases from front to rear. The rear end of the rear part 5b of the fan housing is provided with a circle of flange 5c, and the flange 5c is connected with the flow guide part 33b of the fan blade housing assembly 33 through a plurality of screws 6.
In the present embodiment, the gap between the inner wall of the hood front 5a and the side surface of the motor housing 311 is 0.5mm to 12 mm.
Further, the inner wall of the inner container 2 is provided with an annular step surface 25 facing the inner container rear cover 4; the inner container rear cover 4 abuts against the fan assembly 3, and presses the flange 5c against the annular step surface 25 of the inner container 2.
When the fan assembly 3 works, air enters the fan blades from the air inlet of the inner container rear cover 4 to do work, flows out through the air guide cover 5, the flow speed of the air in the gap between the motor shell 311 and the air guide cover 5 is accelerated under the action of the air guide cover 5, pressure difference is formed, the air pressure inside the motor shell is larger than the air pressure at the gap, the heat generated by the work of the motor and the air inside the motor flows out through the heat dissipation port 313, the flowing direction of the air is shown by an arrow in fig. 3, the effect of cooling the motor is achieved, the working environment of the motor is improved, and the service life of the motor is prolonged.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A motor cooling structure of an electric spray gun comprises a gun body, an inner container, a fan assembly and an inner container rear cover; the front end of the inner container is connected with the gun body, the rear end of the inner container is connected with the inner container rear cover, and the inner container rear cover is provided with an air inlet; the fan assembly is arranged in the liner and comprises a motor, a fan blade and a fan blade cover assembly, the motor is provided with a motor shell, the motor shell is connected with the fan blade cover assembly, one part of the motor shell extends into the fan blade cover assembly, the other part of the motor shell is positioned outside the fan blade cover assembly, and the fan blade is connected with a motor output shaft extending into the fan blade cover assembly; the motor cooling structure comprises a heat dissipation opening arranged on the other part of the side surface of the motor shell, and is characterized by also comprising an air guide cover;
The wind scooper surrounds the other part of the motor shell and comprises a wind shield front part and a wind shield rear part which are sequentially connected, the shape of the wind shield front part is the same as that of the motor shell, and the wind shield rear part is connected with the wind blade shield assembly.
2. A motor cooling structure for an electric spray gun as claimed in claim 1, wherein said motor housing and said hood front portion are both cylindrical in shape;
the shape of the rear part of the fan cover is in a circular truncated cone shape, and the outer diameter of the rear part of the fan cover is gradually increased from front to back.
3. An electric spray gun motor cooling structure as claimed in claim 2, wherein a ring of flange is provided at a rear end of a rear portion of the wind shield, and the flange is connected to the blade shield assembly by screws.
4. A motor cooling structure of an electric spray gun as claimed in claim 3, wherein the inner wall of the inner container is provided with an annular step surface facing the inner container rear cover;
the inner container rear cover is abutted to the fan assembly, and the flange is pressed on the annular step surface of the inner container.
5. A motor cooling structure for an electric spray gun as claimed in claim 3, wherein said vane shroud assembly comprises a vane shroud and a flow directing member, said flow directing member being disposed within said vane shroud; the flange is connected with the flow guide component through screws.
6. An electric spray gun motor cooling structure as claimed in any one of claims 1 to 5, wherein a gap between an inner wall of the front portion of the blade cover and a side surface of the motor housing is 0.5mm to 12 mm.
7. An electric spray gun motor cooling structure as claimed in claim 1, wherein the rear end of the inner container is snap-fit to the inner container rear cover.
8. A motor cooling structure for an electric spray gun as claimed in claim 1, wherein the forward end of said inner container is snap-fit to said gun body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122703216.2U CN216851644U (en) | 2021-11-07 | 2021-11-07 | Electric spray gun motor cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122703216.2U CN216851644U (en) | 2021-11-07 | 2021-11-07 | Electric spray gun motor cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216851644U true CN216851644U (en) | 2022-06-28 |
Family
ID=82099917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122703216.2U Active CN216851644U (en) | 2021-11-07 | 2021-11-07 | Electric spray gun motor cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216851644U (en) |
-
2021
- 2021-11-07 CN CN202122703216.2U patent/CN216851644U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jinhua Jieao Tool Factory Assignor: JINHUA JINSHUN TOOLS Co.,Ltd. Contract record no.: X2023980049060 Denomination of utility model: Motor cooling structure of electric spray gun Granted publication date: 20220628 License type: Common License Record date: 20231130 |