CN210799522U - Noise reduction structure of ground blowing fan - Google Patents
Noise reduction structure of ground blowing fan Download PDFInfo
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- CN210799522U CN210799522U CN201921488928.3U CN201921488928U CN210799522U CN 210799522 U CN210799522 U CN 210799522U CN 201921488928 U CN201921488928 U CN 201921488928U CN 210799522 U CN210799522 U CN 210799522U
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- air
- fan
- shell
- water conservancy
- conservancy diversion
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Abstract
The utility model discloses a blow ground fan noise reduction structure, the utility model discloses be equipped with the water conservancy diversion piece on the edge of air intake, and the marginal portion of this water conservancy diversion piece is located the tube-shape cavity that axial fan's fan blade encloses, can shield the gap completely through annular water conservancy diversion piece to the air can directly get into the tube-shape cavity that the fan blade encloses through the annular channel that the water conservancy diversion piece constitutes after inhaling from the air intake in, avoided like this that the high atmospheric pressure air current will produce the striking with the air current of the normal atmospheric pressure that gets into from the clearance, the flow and the velocity of the air current in the air duct have not only been improved, and greatly reduced the production of noise.
Description
Technical Field
The utility model relates to a blow ground fan, especially a blow ground fan noise reduction structure.
Background
Along with the development of society, the improvement of people's requirement to the environment, this product of ground-blowing fan is gradually popularized in market and bathroom, mainly used blows high-pressure air current to ground to with the water stain rapid evaporation on ground, thereby be difficult to leave the spot when people trample ground, thereby keep ground clean for a long time.
Most present ground blower all comprises the casing with set up the centrifugal fan in the casing, and the casing includes that a cylindric main part reaches the square tuber pipe that link up with the main part, and the main part both ends are equipped with the air intake, and centrifugal fan is located in the middle of the main part, and the tip of tuber pipe is the air outlet, and the high-pressure draught that centrifugal fan formed blows off from the air outlet to play dry effect. However, in the above structure, because there is a gap between the end face of the fan blade of the centrifugal fan and the end wall faces at the two ends of the main body casing, air sucked from the air inlet easily enters between the centrifugal fan and the inner wall of the main body through the gap, and a high-pressure airflow compressed by the fan blade is filled between the centrifugal fan and the inner wall of the main body, and the high-pressure airflow collides with an airflow of normal pressure entering from the gap, which not only reduces the flow rate and velocity of the airflow in the fan duct, but also causes great noise, and therefore, it is necessary to improve the above problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a blow ground fan noise reduction structure.
The utility model provides a technical scheme that its technical problem adopted is:
a noise reduction structure of a ground blowing fan comprises a shell and air inlets arranged at two ends of the shell, wherein an axial flow fan is arranged in the shell.
The inner side edge part of the guide vane is inclined and bent into an arc shape.
The casing comprises left half shell and right half shell, and left half shell passes through the screw connection with right half shell.
The utility model has the advantages that: the utility model discloses be equipped with the water conservancy diversion piece on the edge of air intake, and the marginal portion of this water conservancy diversion piece is located the tube-shape cavity that axial fan's fan blade encloses, can shield the gap completely through annular water conservancy diversion piece to the air can directly get into in the tube-shape cavity that the fan blade encloses through the annular channel that the water conservancy diversion piece constitutes after inhaling from the air intake, avoided like this that the high atmospheric pressure air current will produce the striking with the air current of the normal atmospheric pressure that gets into from the clearance, the flow and the velocity of flow of air current in the tuber pipe have not only been improved, and greatly reduced the production of noise.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a sectional view of the internal structure of the present invention;
fig. 2 is a partially enlarged view of fig. 1.
Detailed Description
Referring to fig. 1 and 2, the utility model discloses a noise reduction structure of a ground blowing fan, which comprises a shell 1 and air inlets 2 arranged at two ends of the shell 1, wherein an axial flow fan 3 is arranged in the shell 1, a flow deflector 4 is arranged at the edge of the air inlet 2, and the edge part of the flow deflector 4 is positioned in a cylindrical cavity enclosed by blades of the axial flow fan 3, so that the annular flow deflector 4 can completely shield gaps, air can directly enter the cylindrical cavity enclosed by the blades 5 through an annular channel formed by the flow deflector 4 after being sucked from the air inlet 2, and then enters the cylindrical cavity enclosed by the blades 5 through the blades 5 to form an air beam, in the structure, the flow deflector 4 can be integrally injection-molded with the shell 1, thus, the cost is low, but the shell 1 is formed by a left half shell and a right half shell, and the left half shell is connected with the right half shell through screws, the former air inlet 2 is large, the axial flow fan, the structure causes a gap to exist between the end surface of the fan blade 5 of the centrifugal fan and the end wall surfaces at the two ends of the main body shell 1, thereby generating noise; the existing structure air inlet 2 is small, the axial flow fan 3 cannot be installed from the air inlet 2, and therefore the axial flow fan 3 is divided into a left half shell and a right half shell, the axial flow fan 3 is convenient to install, if the guide vane 4 and the shell 1 are separated, the axial flow fan 3 can be installed from the air inlet 2, however, the connection position of the guide vane 4 and the shell 1 is difficult to achieve smoothness and no gap, and therefore the effects of flow guiding and noise reduction are not as good as those of integrated forming.
The edge part of the inner side of the flow deflector 4 is inclined inwards and bent into an arc shape, so that air can be guided to enter from the center of the axial flow fan 3, and the phenomenon that air with different pressures collides to form turbulent flow is avoided.
The above detailed description is made on the noise reduction structure of the floor blower provided by the embodiment of the present invention, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (3)
1. A noise reduction structure of a ground blowing fan comprises a shell and air inlets arranged at two ends of the shell, wherein an axial flow fan is arranged in the shell.
2. A structure for reducing noise of a floor blower according to claim 1, wherein: the inner side edge part of the guide vane is inclined and bent into an arc shape.
3. A structure for reducing noise of a floor blower according to claim 1, wherein: the casing comprises left half shell and right half shell, and left half shell passes through the screw connection with right half shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488928.3U CN210799522U (en) | 2019-09-06 | 2019-09-06 | Noise reduction structure of ground blowing fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488928.3U CN210799522U (en) | 2019-09-06 | 2019-09-06 | Noise reduction structure of ground blowing fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210799522U true CN210799522U (en) | 2020-06-19 |
Family
ID=71231676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921488928.3U Active CN210799522U (en) | 2019-09-06 | 2019-09-06 | Noise reduction structure of ground blowing fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210799522U (en) |
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2019
- 2019-09-06 CN CN201921488928.3U patent/CN210799522U/en active Active
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