CN209856054U - Handheld bladeless fan with high wind speed and low noise - Google Patents
Handheld bladeless fan with high wind speed and low noise Download PDFInfo
- Publication number
- CN209856054U CN209856054U CN201920645045.2U CN201920645045U CN209856054U CN 209856054 U CN209856054 U CN 209856054U CN 201920645045 U CN201920645045 U CN 201920645045U CN 209856054 U CN209856054 U CN 209856054U
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- fan
- cover
- air duct
- shell
- wind speed
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Abstract
The utility model discloses a hand-held bladeless fan with high wind speed and low noise, which comprises a shell, a fan cover and a fan; the shell comprises a front cover and a rear cover; the shell is provided with an air outlet, and the inner wall of the air outlet is provided with an annular air duct; a fan installation cavity is formed between the front cover and the rear cover, the fan is installed in the fan installation cavity, and the fan cover covers the fan; a centrifugal air duct is formed in the fan mounting cavity and communicated with the annular air duct. The utility model discloses a fan has used the turbine fan blade, can form high velocity air. The turbine does not cut air, so the noise is low; the fan does not need to be placed at the handle, so that the handle returns to a reasonable size, and the holding feeling is comfortable; the power source uses a traditional brushless motor (namely an outer rotor motor), and the service life of the bladeless fan is the same as that of the traditional fan.
Description
Technical Field
The utility model relates to a fan field, the handheld bladeless fan that concrete wind speed high noise is low.
Background
The bladeless fan is also called an air doubling machine, can generate natural and continuous cold wind, and cannot cover dust or hurt fingers inserted by children due to no blades.
The existing handheld bladeless fan is mainly characterized in that a small axial flow fan is placed in a handle, and the fan conveys air to the top of the handheld fan and extrudes the air through a slit in the top to form certain air volume. There are two significant drawbacks to this approach: 1. the axial flow fan is arranged in the handle, so that the handle is large in size and poor in holding feeling. 2. The air speed of the axial flow fan is low, so that the air speed of discharging the large noise in the product is low.
Disclosure of Invention
The utility model aims to solve the technical problem that a can solve the handheld bladeless fan that the wind speed high noise is low of above-mentioned problem.
The utility model discloses a realize through following technical scheme: a hand-held bladeless fan with high wind speed and low noise comprises a shell, a fan cover and a fan; the shell comprises a front cover and a rear cover; the shell is provided with an air outlet, and the inner wall of the air outlet is provided with an annular air duct; a fan installation cavity is formed between the front cover and the rear cover, the fan is installed in the fan installation cavity, and the fan cover covers the fan; a centrifugal air duct is formed in the fan mounting cavity and communicated with the annular air duct.
As the preferred technical scheme, the fan is a turbofan, and a plurality of turbine blades are arranged on the fan.
As a preferred technical scheme, a mounting cavity and a battery mounting groove are formed between the front cover and the rear cover, a battery is mounted in the battery mounting groove, a main board is fixedly mounted in the mounting cavity, and a switch key is arranged on the main board; the shell is provided with a switch mounting hole, and the switch key is arranged in the switch mounting hole.
As the preferred technical scheme, a grip is formed between the front cover and the rear cover and is positioned below the fan; the rear cover is provided with a plurality of air inlet holes communicated with the fan installation cavity.
The utility model has the advantages that: 1. the fan uses turbine blades, and can form high-speed airflow. The turbine does not cut air, so the noise is low. 2. The fan does not need to be placed at the handle, so that the handle returns to a reasonable size, and the holding feeling is comfortable. 3. The power source uses a traditional brushless motor (namely an outer rotor motor), and the service life of the bladeless fan is the same as that of the traditional fan.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a main sectional view of the present invention;
fig. 2 is a side sectional view of the present invention;
fig. 3 is a back view of the present invention;
fig. 4 is a front view of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1 to 4, the fan comprises a housing 1, a fan cover 2 and a fan 3; the shell comprises a front cover and a rear cover; an air outlet 4 is arranged on the shell, and an annular air duct 5 is arranged on the inner wall of the air outlet; a fan installation cavity is formed between the front cover and the rear cover, the fan is installed in the fan installation cavity, and the fan cover 2 covers the fan 3; a centrifugal air duct 6 is formed in the fan installation cavity, the centrifugal air duct 6 is communicated with the annular air duct 5, and the annular air duct is communicated with the external environment through a slit.
Wherein, fan 3 is the turbofan, is equipped with the multiple turbine fan blade on the fan 3.
Wherein, a mounting cavity and a battery mounting groove are formed between the front cover and the rear cover, a battery is mounted in the battery mounting groove, a mainboard is fixedly mounted in the mounting cavity, and a switch key (not shown) is arranged on the mainboard; the shell 1 is provided with a switch mounting hole, the switch key is arranged in the switch mounting hole, the storage battery is connected with the mainboard, the mainboard is connected with the fan, and the fan is controlled to start and stop by the switch.
Wherein, a grip 8 is formed between the front cover and the rear cover, the grip is convenient for grabbing, and the grip 8 is positioned below the fan 3; the rear cover is provided with a plurality of air inlet holes 11 communicated with the fan mounting cavity, and air flow of the air inlet holes 11 can enter the fan mounting cavity, so that the fan can generate air flow.
Wherein, when in design, the diameters of the annular air duct and the centrifugal air duct are designed to be smaller.
Wherein, the motor in the fan is a brushless motor.
Wherein, the front cover and the rear cover are assembled and fixed, aligned screw holes are arranged between the front cover and the rear cover, and screws are inserted into the screw holes.
The working principle is as follows: according to the scheme, high-speed airflow generated by the turbine fan flows to the annular air duct along the centrifugal air duct, the annular air duct is equivalent to a cavity, the high-speed airflow forms strong pressure in the cavity, so that air is extruded out from a slit of the annular air duct, the extruded high-speed airflow drives surrounding air to move towards one direction (fluid viscosity principle), and a large amount of air is formed.
The utility model has the advantages that: 1. the fan uses turbine blades, and can form high-speed airflow. The turbine does not cut air, so the noise is low. 2. The fan does not need to be placed at the handle, so that the handle returns to a reasonable size, and the holding feeling is comfortable. 3. The power source uses a traditional brushless motor (namely an outer rotor motor), and the service life of the bladeless fan is the same as that of the traditional fan.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (4)
1. The utility model provides a handheld bladeless fan that wind speed height noise is low which characterized in that: comprises a shell (1), a fan cover (2) and a fan (3); the shell comprises a front cover and a rear cover; an air outlet (4) is formed in the shell, and an annular air duct (5) is arranged on the inner wall of the air outlet; a fan installation cavity is formed between the front cover and the rear cover, the fan is installed in the fan installation cavity, and the fan cover (2) covers the fan (3); a centrifugal air duct (6) is formed in the fan mounting cavity, and the centrifugal air duct (6) is communicated with the annular air duct (5); the annular air duct (5) is communicated with the external environment through a slit.
2. The handheld bladeless fan of claim 1, wherein the fan has a high wind speed and a low noise: the fan (3) is a turbine fan, and a plurality of turbine blades are arranged on the fan (3).
3. The handheld bladeless fan of claim 1, wherein the fan has a high wind speed and a low noise: a mounting cavity and a battery mounting groove are formed between the front cover and the rear cover, a battery is mounted in the battery mounting groove, a main board is fixedly mounted in the mounting cavity, and a switch key is arranged on the main board; the shell (1) is provided with a switch mounting hole, and the switch key is arranged in the switch mounting hole.
4. The handheld bladeless fan of claim 1, wherein the fan has a high wind speed and a low noise: a handle (8) is formed between the front cover and the rear cover, and the handle (8) is positioned below the fan (3); the rear cover is provided with a plurality of air inlet holes (11) communicated with the fan installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645045.2U CN209856054U (en) | 2019-05-07 | 2019-05-07 | Handheld bladeless fan with high wind speed and low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645045.2U CN209856054U (en) | 2019-05-07 | 2019-05-07 | Handheld bladeless fan with high wind speed and low noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856054U true CN209856054U (en) | 2019-12-27 |
Family
ID=68940427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920645045.2U Expired - Fee Related CN209856054U (en) | 2019-05-07 | 2019-05-07 | Handheld bladeless fan with high wind speed and low noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441970A (en) * | 2020-04-03 | 2020-07-24 | 东莞市嘉木仕电子有限公司 | Hand-held bladeless fan |
-
2019
- 2019-05-07 CN CN201920645045.2U patent/CN209856054U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111441970A (en) * | 2020-04-03 | 2020-07-24 | 东莞市嘉木仕电子有限公司 | Hand-held bladeless fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |