Curvature of inner wall for blowing machine
An air blowing machine includes a casing composed of a peripheral wall and at least one sidewall through which an inlet is defined. A hollow interior is defined in the casing and an opening is defined in a top of the casing. The casing has an inner surface which includes a first curvature with a first radius “A1”, a second curvature with a second radius “B1”, a third curvature with a third radius “C1”, a fourth curvature with a fourth radius “D1” and a fifth curvature with a fifth radius “E1” in counter clockwise direction from the opening. A relationship among the radiuses is A1<B1>C1<D1<E1.
The present invention relates to a blowing machine which includes a curved inner surface composed of several curvatures so as to increase the pressure of the air flow in the blowing machine.
BACKGROUND OF THE INVENTIONA conventional blowing machine is shown in
The present invention intends to provide an air blowing machine that includes several curvatures in the inner surface of the casing of the air blowing machine and the curvatures are arranged to include a converge portion to increase the pressure in the casing so that the pressure of the air flow at the opening can be increased.
SUMMARY OF THE INVENTIONThe present invention relates to an air blowing machine which includes a casing composed of a peripheral wall and at least one sidewall through which an inlet is defined. A hollow interior is defined in the casing and an opening is defined in a top of the casing. The casing has an inner surface which includes a first curvature with a first radius “A1”, a second curvature with a second radius “B1”, a third curvature with a third radius “C1”, a fourth curvature with a fourth radius “D1” and a fifth curvature with a fifth radius “E1” in counter clockwise direction from the opening. A relationship among the radiuses is A1<B1>C1<D1<E1.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
The first radius “A1” is a distance from a left inside of the opening 34 of the casing 3 to the center of the inlet 320. The second radius “B1” is a distance from most left point of the casing 3 to the center of the inlet 320. The third radius “C1” is a distance from a left lower point of the casing 3 to the center of the inlet 320. The fourth radius “D1” is a distance from the bottom point of the casing 3 to the center of the inlet 320. The fifth radius “E” is a distance from most right point of the casing 3 to the center of the inlet 320. A relationship among the radiuses being A1<B1>C1<D1<E1. A converge portion is formed at the third curvature with the third radius “C1” so that the pressure of the ail flow is increased and the air flow with high pressure blows to the areas with the fourth curvature and the fifth curvature and then blows out from the opening 34.
It is noted that the inner surface of the casing 3 of the present invention may be composed of the same curvatures at different centers or different curvatures at different centers.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims
1. An air blowing machine comprising:
- a casing composed of a peripheral wall and at least one sidewall through which an inlet is defined, a hollow interior defined in the casing and an opening defined in a top of the casing, the opening communicating with the interior, the casing having an inner surface which includes a first curvature with a first radius “A1”, a second curvature with a second radius “B1”, a third curvature with a third radius “C1”, a fourth curvature with a fourth radius “D1” and a fifth curvature with a fifth radius “E1” in counter clockwise direction from the opening, a relationship among the radiuses being A1<B1>C1<D1<E1.
2. The air blowing machine as claimed in claim 1, wherein the first, second, third, fourth and fifth radiuses have a common center which is a center of the inlet.
3. The air blowing machine as claimed in claim 1, wherein the first radius “A1” is a distance from a left inside of the opening of the casing to the center of the inlet, the second radius “B1” is a distance from most left point of the casing to the center of the inlet, the third radius “C1” is a distance from a left lower point of the casing to the center of the inlet, the fourth radius “D1” is a distance from the bottom point of the casing to the center of the inlet, the fifth radius “E” is a distance from most right point of the casing to the center of the inlet.
4. The air blowing machine as claimed in claim 1, wherein the peripheral wall is composed of a first part and a second part, two respective first ends of the first part and the second part are connected to connection neck of the opening and a connection plate is connected between two respective second ends of the first and second parts in substantially radial direction.
5. The air blowing machine as claimed in claim 1, wherein the peripheral wall is composed of a first part and a second part, two respective first ends of the first part and the second part are connected to connection neck of the opening and a tube is connected between two respective second ends of the first and second parts in substantially radial direction.
Type: Application
Filed: Apr 27, 2007
Publication Date: Oct 30, 2008
Inventor: Shih-Ci Lian (Ta-Li City)
Application Number: 11/796,407
International Classification: F04D 29/44 (20060101);