CN217474304U - Air duct shell with noise reduction function and air blow gun comprising same - Google Patents

Abstract

The application relates to an air duct shell with a noise reduction function and an air blow gun comprising the same, relates to the technical field of small-sized electrical appliances, and is mainly applied to household or vehicle-mounted dust removal. The conventional air blow gun has the problem that the running noise of the air blow gun is increased because the air in the air outlet is compressed due to the reduction of the cross-sectional area of the air outlet. One kind among this technical scheme has the wind channel shell of making an uproar function of falling, it is including installation tube and air outlet tube, the motor of blowing is installed in the installation tube of wind channel shell, the air outlet tube is located the one side at the end place of giving vent to anger of installation tube simultaneously, the wind that the motor of blowing blew out can be blown out from the air outlet tube, the gas outlet wind pressure of this wind channel shell of improvement sets up the steady flow mouth through the side at air outlet tube length direction to reduce the air current and assemble the problem that the in-process takes place the noise.

Description

Air duct shell with noise reduction function and air blow gun comprising same

Technical Field

The application relates to the technical field of small-sized electrical appliances, in particular to an air duct shell with a noise reduction function and an air blow gun comprising the same.

Background

The air blow gun is mainly used for removing impurities such as dust, powder, scraps or water stains on the surface or in the inner cavity of an article. In the cleaning process, the air pressure of an air outlet of the air blow gun is a key performance index, and the larger the air pressure is, the easier the impurities on the surface of an article or in an inner cavity are blown and cleaned.

In order to increase the wind pressure of the air blow gun gas outlet, the Chinese utility model patent with the publication number of CN201371096Y and the publication date of 2009, 12 and 30 discloses an air blow nozzle for an air blow gun, wherein a conical body is communicated with a through hole from the outside to the gas outlet by an air inlet close to a hole at the side of the air inlet. Therefore, after compressed air is blown in from the air inlet by the air gun at a high speed, the compressed air can be blown out from the air outlet at a high speed, negative pressure can be formed in the through hole from the air inlet to the air outlet, a lot of air can be sucked in from the hole (air supplement hole) which is communicated with the outside, and the air volume of the air outlet of the air blowing nozzle is increased.

However, although this arrangement increases the air volume in the air outlet, the air in the air outlet is compressed due to the reduced cross-sectional area of the air outlet, which generally causes a problem of increased noise in the operation of the air gun.

SUMMERY OF THE UTILITY MODEL

Improve gas outlet noise problem in order to improve when blowing gun gas outlet wind pressure, this application provides an air duct shell and contain the blowing gun of this shell with fall the function of making an uproar.

In a first aspect, the following technical scheme is adopted for the air duct shell with the noise reduction function provided by the application.

The utility model provides an air duct shell with function of making an uproar is fallen, including the installation tube that is used for the installation motor of blowing and with the gassing tube of installation tube intercommunication, the installation tube has into gas end and the end of giving vent to anger, the gassing tube is located one side at the end place of giving vent to anger of installation tube, just the gassing tube is provided with the steady flow mouth along length direction's side.

Through adopting above-mentioned technical scheme, the motor of blowing is installed in the installation tube of wind channel shell, and the outlet tube shell is located the one side at the end place of giving vent to anger of installation tube simultaneously, and the wind that the motor of blowing blew out can be followed and is blown out in the outlet tube shell, and the gas outlet wind pressure of this wind channel shell of improvement sets up the steady flow mouth through the side at outlet tube shell length direction to reduce the air current and assemble the problem that the in-process takes place the noise.

Optionally, the gas outlet tube shell includes a smooth section and a narrowed section, the narrowed section has a gradually decreasing cross section along the gas outlet direction, and the steady flow port is disposed at a side of the narrowed section.

Through adopting above-mentioned technical scheme, divide into smooth section and narrowing section with the outlet tube shell, and the narrowing section reduces along the cross-section of the direction of giving vent to anger gradually, so that the gas outlet of outlet tube shell can produce higher wind pressure, set up the stationary flow mouth in the side of narrowing section simultaneously, so that the wind that the motor of blowing blew out at first can pass through at the smooth section, then improve the wind pressure at the narrowing section, because the stationary flow mouth sets up the side at the narrowing section, so as to reduce the problem that produces the noise because the wind pressure increases.

Optionally, the wind channel shell comprises first half shell and second half shell, first half shell with the connection can be dismantled to the second half shell, just the steady flow mouth is in first half shell with all there is the setting on the second half shell.

Through adopting above-mentioned technical scheme, the wind channel shell comprises half shell of first half and second to make the processing of wind channel shell more convenient, simultaneously, when needing to install other parts in the wind channel shell, the installation also can be more convenient, the modular processing of the wind channel shell of being convenient for.

Optionally, a radiation inclined plane is arranged on a side edge of the flow stabilizing port, and the radiation inclined plane gradually expands the width of the flow stabilizing port along the air duct shell from inside to outside.

Through adopting above-mentioned technical scheme, set up the radiation inclined plane at the side of stationary flow mouth, the slope of radiation inclined plane sets up so that the width of stationary flow mouth can expand along wind channel shell from inside to outside direction gradually simultaneously to improve the efficiency of giving vent to anger of stationary flow mouth, reduce the air and appear extruded problem at the notch of stationary flow mouth, thereby further reduce the noise problem.

Optionally, half first shell orientation the side at half shell place of second is provided with first border, half shell orientation of second the side at half first shell place is provided with the second border, be provided with first air outlet groove on the first border, be provided with the second air outlet groove on the second border, first air outlet groove with the second air outlet groove aligns and the side direction air outlet groove that constitutes, the wind channel shell be provided with air outlet plug in the side direction air outlet groove, have in the air outlet plug be used for with the inside venthole with outside intercommunication of wind channel shell.

Through adopting above-mentioned technical scheme, set up first border at the side of first half shell, set up the second border at the side of the half shell of second, simultaneously, set up first air outlet groove on first border, set up the second air outlet groove on the second border, side direction air outlet groove is constituteed jointly to first air outlet groove and second air outlet groove to make the inside circuit of wind channel shell can be drawn forth through the venthole of air outlet plug, improve this wind channel shell's installation convenience.

In a second aspect, the application provides an air blow gun, which adopts the following technical scheme.

A gas blow gun comprises the air duct shell with the noise reduction function, a gas blow motor arranged in the air duct shell and a gas blow shell covering and fixing the air duct shell; the air blowing shell comprises an air blowing part and a holding part, the air duct shell is arranged in the air blowing part, and an electric control module and a battery module are arranged in the holding part.

Through adopting above-mentioned technical scheme, install automatically controlled module and battery module in the portion of gripping, the motor of will blowing simultaneously is installed inside the wind channel shell, and rethread wind channel shell is installed in the portion of blowing of the shell of blowing to make the wind that the motor of blowing blew out at first can pass through in the smooth section, then improve the wind pressure at the narrowing section, because steady flow mouth sets up the side at the narrowing section, thereby can reduce the problem that produces the noise because the wind pressure increases.

Optionally, a fixed rear cover is arranged at the air inlet of the air blowing part, an air blowing nozzle is arranged at the air outlet of the air blowing part, and the air blowing nozzle and the fixed rear cover are detachably connected with the air blowing part.

Through adopting above-mentioned technical scheme, set up fixed back shroud at the air inlet of the portion of blowing, can will blow the shell through fixed back shroud and install fixedly on the one hand, on the other hand, fixed back shroud can filter the inside air of air blow gun, improves the inside problem of debris entering air blow gun. The air outlet of the air blow gun is provided with the air blow nozzle, so that the application range of the air blow gun can be prolonged, and air blowing cleaning can be performed on some narrow positions more conveniently.

Optionally, a fool-proof groove is formed in an air outlet of the air blowing portion, a fool-proof boss is arranged on the side, where the fixed rear cover faces the air blowing portion, of the fixed rear cover, and the fool-proof boss is matched with the fool-proof groove in a clamping mode.

Through adopting above-mentioned technical scheme, set up at the gas outlet of the portion of blowing and prevent slow-witted groove, set up in the side at fixed back shroud orientation portion of blowing and prevent slow-witted boss, through preventing slow-witted boss and the joint cooperation in preventing slow-witted groove to the installation that makes fixed back shroud has clear and definite installation direction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. reducing the noise problem. The motor of blowing installs in the installation tube of wind channel shell, it is located the one side at installation tube's the end place of giving vent to anger to give vent to anger the tube simultaneously, divide into smooth section and narrowing section with the pipe of giving vent to anger, and the narrowing section reduces along the cross-section of the direction of giving vent to anger gradually, so that the gas outlet of the pipe of giving vent to anger can produce higher wind pressure, set up the stationary flow mouth in the side of narrowing section simultaneously, so that the wind that the motor of blowing blew out at first can pass through at the smooth section, then improve the wind pressure at the narrowing section, because the stationary flow mouth sets up the side at the narrowing section, the slope of radiation sets up so that the width of stationary flow mouth can expand along the wind channel shell from inside to outside direction gradually simultaneously, thereby improve the efficiency of giving vent to anger of stationary flow mouth, reduce the extruded problem appears in the notch of stationary flow mouth, thereby can reduce the problem that produces the noise because the wind pressure increases.

2. The installation is convenient. The wind channel shell comprises half shell of first shell and second, and the processing of wind channel shell is more convenient, and first air outlet groove and second air outlet groove constitute side direction air outlet groove jointly to make the inside circuit of wind channel shell can be drawn forth through the venthole of air outlet plug, improve the installation convenience of this wind channel shell, when needing to install other parts in the wind channel shell, it is also more convenient to install simultaneously.

3. The application range of the air blow gun is wider. The air inlet of the air blowing part is provided with the fixed rear cover, on one hand, the air blowing shell can be installed and fixed through the fixed rear cover, on the other hand, the fixed rear cover can filter air inside the air blowing gun, and the problem that sundries enter the air blowing gun is solved. The air outlet of the air blow gun is provided with the air blow nozzle, so that the application range of the air blow gun can be prolonged, and air blowing cleaning can be performed on some narrow positions more conveniently.

Drawings

FIG. 1 is a schematic illustration of a partial detonation structure of a blow gun in an embodiment of the present application;

FIG. 2 is a schematic view of the mounting structure of the fixed rear cover in the embodiment of the present application;

FIG. 3 is a schematic structural diagram showing a casing of an air duct in an embodiment of the present application;

fig. 4 is a schematic structural diagram showing a flow stabilizing port in the embodiment of the present application.

Description of reference numerals:

100. a gas blowing housing; 110. a blowing section; 111. a fool-proof groove; 120. a grip portion; 130. fixing the rear cover; 131. a fool-proof boss; 140. a blowing nozzle; 150. fixing the bottom ring; 160. fixing the front ring; 200. a blowing motor; 310. installing a pipe shell; 311. a fan mounting groove; 320. an air outlet pipe shell; 321. a flow stabilizing port; 3211. a radiation bevel; 322. a smoothing section; 323. narrowing the section; 330. a first half shell; 331. a first edge; 340. a second half shell; 341. a second edge; 350. a lateral air outlet groove; 351. a first air outlet groove; 352. a second air outlet groove; 360. an air outlet plug; 361. and an air outlet.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses an air blow gun.

Referring to fig. 1, an air blow gun includes an air blow housing 100, an air blow motor 200, and an air duct housing having a noise reduction function. The air-blowing housing 100 includes an air-blowing portion 110 and a grip portion 120, the air-blowing portion 110 is substantially hollow-cylindrical, and the grip portion 120 is integrally formed with the side of the air-blowing portion 110. The blowing motor 200 is installed inside the air duct housing, the air duct housing is fixedly installed inside the blowing part 110, and an electronic control module (not shown) and a battery module (not shown) are provided inside the grip part 120.

Referring to fig. 1, in order to facilitate the processing of the air blowing shell 100, the air blowing shell 100 is fixedly connected into a whole by an upper half and a lower half in a buckling manner, and in order to reinforce the connection strength of the air blowing shell 100, a fixed rear cover 130 is arranged at an air inlet of the air blowing part 110, so that the air blowing shell 100 can be installed and fixed through the fixed rear cover 130, and on the other hand, the fixed rear cover 130 can filter air inside the air blowing gun, thereby improving the problem that sundries enter the air blowing gun. The fixed rear cover 130 is substantially in the shape of a hollow disk with an open end, and the fixed rear cover 130 is fastened to the air blowing housing 100 from the rear of the air blowing part 110 by upper and lower halves. Meanwhile, the bottom end of the grip 120 is mounted with a fixed bottom ring 150, the air outlet of the air blowing part 110 is mounted with a fixed front ring 160, the fixed bottom ring 150 is coated on the outer surface of the grip 120 of the air blowing casing 100, and the fixed front ring 160 is coated on the outer surface of the air blowing part 110 of the air blowing casing 100, thereby further reinforcing the air blowing casing 100. The air outlet of the air blowing part 110 is provided with the air blowing nozzle 140, and the air blowing nozzle 140 and the air blowing part 110 are detachably connected in a hole-shaft matching clamping mode, so that the application range of the air blowing gun can be extended, and air blowing cleaning can be performed on narrow positions more conveniently.

Referring to fig. 1 and 2, a fool-proof groove 111 is disposed at an air outlet of the air blowing part 110, a fool-proof boss 131 is disposed at a side surface of the fixed rear cover 130 facing the air blowing part 110, the fool-proof boss 131 is substantially rectangular, and the fool-proof boss 131 is in clamping fit with the fool-proof groove 111, so that the fixed rear cover 130 is installed in a specific installation direction. In order to facilitate the fool-proof boss 131 to enter the fool-proof groove 111, a guiding arc is formed in the fool-proof groove 111 in the direction toward the fixed rear cover 130.

Referring to fig. 1 and 3, in order to facilitate the processing and assembling of the air duct housing, the air duct housing is composed of a first half-shell 330 and a second half-shell 340, and the first half-shell 330 and the second half-shell 340 are detachably connected by means of bolt compression. Meanwhile, a first edge 331 is provided at a lower end surface of the first half shell 330, and a second edge 341 is provided at an upper end surface of the second half shell 340. First border 331 is provided with first air outlet groove 351 towards the direction at the position of portion 120 that grips, second border 341 is provided with second air outlet groove 352 towards the direction at the position of portion 120 that grips, first air outlet groove 351 and second air outlet groove 352 align and the side direction air outlet groove 350 that constitutes, be provided with air outlet plug 360 in the side direction air outlet groove 350 of wind channel shell, air outlet plug 360 is interior to have and is used for the inside venthole 361 with outside intercommunication with the wind channel shell, so that the inside circuit of wind channel shell can be drawn forth through air outlet hole 361 who goes out air plug 360, improve this wind channel shell's installation convenience.

Referring to fig. 1 and 2, the duct housing is generally in the shape of a hollow cylindrical tube, and includes a mounting shell 310 and an outlet shell 320, in this embodiment, the mounting shell 310 and the outlet shell 320 are integrally formed and communicate with each other. A fan mounting groove 311 is formed in the mounting tube 310, the blowing motor 200 is fixedly mounted in the fan mounting groove 311, and a line of the blowing motor 200 can be led out through an air outlet 361 of the air outlet plug 360. Mounting shell 310 has an inlet end and an outlet end, and outlet shell 320 is located on the side of mounting shell 310 where the outlet end is located.

Referring to fig. 1 and 3, the outlet pipe housing 320 includes a smooth section 322 and a narrowed section 323 along the air blowing direction, the inner cavity of the smooth section 322 is substantially cylindrical, the inner cavity of the narrowed section 323 is substantially circular truncated cone-shaped, and the cross section of the narrowed section 323 along the air blowing direction is gradually reduced, so that the air blown by the air blowing motor 200 can firstly transit at the smooth section 322, and then the air pressure is increased at the narrowed section 323. And the side of the narrowing section 323 is provided with a steady flow port 321, the length direction of the steady flow port 321 is the same as the blowing direction, and the steady flow port 321 is arranged on both the first half shell 330 and the second half shell 340. In the present embodiment, the flow stabilizing port 321 is a flow stabilizing groove in a rectangular groove shape. In other embodiments, the flow stabilizing port 321 may be in the form of a hole, a waist hole, or a plurality of parallel holes, and all equivalent changes made according to the structure, shape, and principle of the present application should be covered by the protection scope of the present application. The air blown out by the blowing motor 200 can be blown out from the air outlet pipe shell 320, and the air pressure of the air outlet of the air duct shell is improved, and the flow stabilizing port 321 is arranged on the side surface of the air outlet pipe shell 320 in the length direction, so that the problem of noise generated in the air flow convergence process is reduced.

Referring to fig. 1 and 4, a radiation inclined plane 3211 is disposed at a side edge of the flow stabilizing port 321, and the radiation inclined plane 3211 gradually expands the width of the flow stabilizing port 321 along the air duct casing from inside to outside, so as to improve the air outlet efficiency of the flow stabilizing port 321, reduce the problem of extrusion of air at the notch of the flow stabilizing port 321, and reduce the noise problem. Through the test, install this air blow gun and blow the mouth 140 to set up the diameter of the air outlet of blow mouth 140 to 12.8mm, set up steady flow mouth 321 at narrowing section 323, set up emission inclined plane 3211 at the opening of steady flow mouth 321 simultaneously, can guarantee to improve the air outlet noise problem when improving the air pressure of air blow gun air outlet.

The implementation principle of the air duct shell with the noise reduction function and the air blow gun comprising the shell is as follows: the blower motor 200 is installed in the installation tube housing 310 of the duct housing, and the outlet tube housing 320 is located at the side where the outlet end of the installation tube housing 310 is located, dividing the outlet tube housing 320 into a smooth section 322 and a narrowed section 323, and the section of the narrowing section 323 along the air outlet direction is gradually reduced, the air outlet of the air outlet pipe shell 320 can generate higher air pressure, meanwhile, the steady flow port 321 is arranged at the side surface of the narrowing section 323, the wind blown by the blowing motor 200 can firstly transit in the smooth section 322, then the wind pressure is improved in the narrowing section 323, since the steady flow port 321 is disposed at the side of the narrowing section 323, and the radial inclined surface 3211 is disposed obliquely so that the width of the steady flow port 321 can gradually expand along the direction from the inside to the outside of the air duct housing, therefore, the air outlet efficiency of the flow stabilizing port 321 is improved, the problem that air is extruded at the notch of the flow stabilizing port 321 is reduced, and the problem that noise is generated due to increase of air pressure is reduced.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereby. Wherein like parts are designated by like reference numerals. It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an air duct shell with function of making an uproar is fallen, its characterized in that, including installation tube shell (310) that is used for installing gas blowing motor (200) and with air outlet tube shell (320) of installation tube shell (310) intercommunication, installation tube shell (310) have into gas end and give vent to anger the end, air outlet tube shell (320) are located one side at the end place of giving vent to anger of installation tube shell (310), just air outlet tube shell (320) are provided with steady flow mouth (321) along length direction's side.

2. The duct casing with the noise reduction function according to claim 1, wherein the outlet pipe shell (320) comprises a smooth section (322) and a narrowed section (323), the cross section of the narrowed section (323) along the outlet direction is gradually reduced, and the flow stabilizing port (321) is arranged at the side of the narrowed section (323).

3. An air duct casing with noise reduction function according to claim 2, characterized in that the air duct casing is composed of a first half-casing (330) and a second half-casing (340), the first half-casing (330) and the second half-casing (340) are detachably connected, and the flow stabilizing port (321) is provided on both the first half-casing (330) and the second half-casing (340).

4. The air duct casing with the noise reduction function according to claim 1, wherein a side of the steady flow port (321) is provided with a radial inclined surface (3211), and the radial inclined surface (3211) gradually expands the width of the steady flow port (321) along the direction from inside to outside of the air duct casing.

5. The air duct shell with the noise reduction function according to claim 3, wherein a side of the first half shell (330) facing the second half shell (340) is provided with a first edge (331), a side of the second half shell (340) facing the first half shell (330) is provided with a second edge (341), the first edge (331) is provided with a first air outlet groove (351), the second edge (341) is provided with a second air outlet groove (352), the first air outlet groove (351) and the second air outlet groove (352) are aligned and form a lateral air outlet groove (350), an air outlet plug (360) is arranged in the lateral air outlet groove (350) of the air duct shell, and an air outlet hole (361) for communicating the inside with the outside of the air duct shell is arranged in the air outlet plug (360).

6. An air blowing gun comprising the air duct shell with the noise reduction function according to any one of claims 1 to 5, characterized by further comprising an air blowing motor (200) arranged inside the air duct shell and an air blowing shell (100) covering and fixing the air duct shell; the air blowing shell (100) comprises an air blowing part (110) and a holding part (120), the air duct shell is arranged in the air blowing part (110), and an electric control module and a battery module are arranged in the holding part (120).

7. The air blowing gun as claimed in claim 6, characterized in that a fixed rear cover (130) is arranged at an air inlet of the air blowing part (110), an air blowing nozzle (140) is arranged at an air outlet of the air blowing part (110), and the air blowing nozzle (140) and the fixed rear cover (130) are detachably connected with the air blowing part (110).

8. The air blow gun according to claim 7, characterized in that a fool-proof groove (111) is arranged at an air outlet of the air blowing part (110), a fool-proof boss (131) is arranged on a side surface of the fixed rear cover (130) facing the air blowing part (110), and the fool-proof boss (131) is in clamping fit with the fool-proof groove (111).

Images