Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric blower and electric cleaner using the same

A technology of electric fans and impellers, which is applied in vacuum cleaners, engine manufacturing, machines/engines, etc. It can solve the problems of unrealized cross-sectional area of ​​the flow path, and achieve the effect of improving blowing efficiency, improving dust collection performance, and comfortable dust collection

Active Publication Date: 2009-07-22
PANASONIC CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is the following problem in the structure of the above-mentioned existing device, that is, since the front shielding surface is arranged in an opening shape at the entrance of the curved impeller 40 where the airflow sucked in turns from the rotation axis direction to the radial direction, only the front shielding surface If the distance between the surface 41 and the rear shielding surface 42 changes and the shape of the curved surface of the front shielding surface 41 cannot obtain a straight line relationship from the outer diameter of the impeller to the inlet, it is impossible to realize the flow path cut-off that can be expected to fully improve the blowing efficiency of the impeller. area

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric blower and electric cleaner using the same
  • Electric blower and electric cleaner using the same
  • Electric blower and electric cleaner using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The electric blower in the embodiment 1 of the present invention is as Figure 1 ~ Figure 4 shown in .

[0033] Such as figure 1 , figure 2 As shown in , the electric fan in this embodiment includes: an impeller 1 with a front shielding surface 2, a rear shielding surface 3 and a plurality of blades 4 between the two shielding surfaces 2, 3; The hub 6 in the shape of a round hammer-shaped hill in the interior of the inlet 5 of 1, and the wind deflector 8 having a three-dimensional curved surface and an inlet guide vane 7 connected to the blade 4; with a plurality of stationary vanes located around the impeller 1 9 and the air guide part 11 of its base plate 10; the air guide part 11 and the impeller 1 are wrapped in its inside, and the center is provided with the housing 13 of the suction hole 12 facing the inlet 5; and is used to drive the impeller 1 to rotate The electric motor 14.

[0034] The front shield surface 2 , the rear shield surface 3 of the impeller 1...

Embodiment 2

[0048] Next according to Figure 5 , Figure 6 Embodiment 2 of the present invention will be described. Wherein, the basic structure of the electric blower is the same as that in Embodiment 1, so repeated description thereof will be omitted here.

[0049] In this example, if Figure 5 As shown in (a), the flow path cross-sectional area of ​​the impeller 1 varies between the range from the impeller inlet 5 to the hub end portion 26 and the range from the hub end portion 26 to the outlet 25 . In this way, the flow velocity from the inlet 5 to the outlet 25 parallel to the flow center curve 21 of the impeller 1 will be as Figure 5 changes as shown in (b).

[0050] If this embodiment is adopted, the part from the inlet 5 to the hub terminal part 26 and the part from the hub terminal part 26 to the outlet 25 can be designed separately, which can not only realize the cross-sectional area of ​​the flow path on the side of the inlet 5, but also reduce the intake air flow from the...

Embodiment 3

[0056] pass below Figure 7 Embodiment 3 of the present invention will be described. Wherein, the basic structure of the electric fan is the same as that in Embodiment 1, so repeated description thereof is omitted here.

[0057] Such as Figure 7 (a) As shown in (b), the front shielding surface 2 and the hub 6 in the impeller 1 of this embodiment are respectively provided with a parallel portion 28 substantially parallel to the rotating shaft 16 near the end of the inlet 5, forming a parallel portion 28 parallel to the rotating shaft. 16 parallel circular air suction passages.

[0058] In this way, the turbulent flow generated when the airflow is attracted towards the rotation axis 16 can be reduced at the inlet of the impeller 1, and all the airflow in the direction of the rotation axis 16 can be smoothly turned to the radial direction thereafter.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An object of the present invention is to provide an electric fan that can sufficiently improve the blowing efficiency of the impeller. Among them, in the impeller (1), the flow from the inlet (5) to the outlet (25) is formed by the front shield surface (2), the rear shield surface (3) and the hub (6) in the wind guide wheel (8). In the channel, the area of ​​the channel section perpendicular to the center of the channel is set to increase monotonously from the inlet (5) to the outlet (25). In this way, the flow velocity caused by the flow inside the impeller (1) is continuously and gradually decelerated in the entire flow path area from the inlet (5) to the outlet (25), without repeated acceleration and deceleration, so it is expected Fully improve the blowing efficiency.

Description

technical field [0001] The present invention relates to an electric blower capable of improving the blowing efficiency of an impeller, and an electric vacuum cleaner using the electric blower. Background technique [0002] Up to now, electric blowers aiming at improving the blowing efficiency of the impeller have been proposed (for one example, refer to Japanese Patent Laid-Open Publication No. 2006-9669). [0003] The impeller 40 in the above electric blower is as Figure 10 As shown in , it is composed of a front shielding surface 41, a rear shielding surface 42 and a plurality of blades 43 arranged between the two shields. The shape of the front shield surface 41 is set to be inclined, so that the distance from the front shield surface 41 to the rear shield surface (substrate) 42 becomes shorter as the distance from the center (that is, when moving toward the outer periphery) becomes shorter. (that is, a>b>c>d), and at the same time, the radial cross-sectional shap...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28A47L9/00
CPCF04D25/082F04D29/281F05D2250/70F04D29/5806F04D29/44F04D29/28
Inventor 香山博之中村一繁横手静
Owner PANASONIC CORP