|Title of Invention
IMPELLER WITH FOUR VANES AND TWO HOLES FOR PUMP WITH OPTIMUM CAPACITY, HEAD AND EFFICIENCY
|A pump impeller with four vanes and two holes comprising of hub for the purpose of assembling on a rotating shaft, the impeller having diameter 130 mm and vane tip extending from vane body having a leading edge cutting edge at out ward extremity designed uniquely for maximum efficiency the said two hole on the impeller being exactly opposite to each either which control automatic hydraulic balancing of the impeller,
|The Patent Act, 1 970 (39 of 1970)
(Section 10; Rule 13)
1) "IMPELLER WITH FOUR VANES AND
TWO HOLES FOR PUMP WITH
OPTIMUM CAPACITY, HEAD AND
2) MR. GAJANAN HEGDE (Indian
National) having office at J-340, MIDC
Industrial Area, Bhosari, PUNE - 411
The following specifications particularly describes & Ascertains the nature of this invention & the manner in which it is performed:
The present invention relates to an impeller with vanes with maximum diameter of 130 mm for pump with optimum capacity, head and efficiency.
The conventional impeller have less capacity, head and efficiency.
Document WO 2004036054 relates to an impeller for cooling water pump and pump of an internal combustion Engine comprises of hub, cover disk, blade and control opening.
Document WO 2005005839 discloses impeller use in industrial pump in which the vanes of the pump impeller are particularly configured to maintain pumping efficiency as the vane wears over continuous use or operation of the pump.
US document US 2004013513 discloses impeller for fuel pump which comprises of hub portion, plurality of blades, peripherial ring protion.
Document WO 2005001294 discloses a turbo molecular pump comprises of hub , blades are formed from strips of fibres or particle reinforced polymeric material.
However, the conventional methods have many disadvantages over the present invention. Some of which are mentioned below:-
The capacity, head and efficiency of pump are much less than present impeller.
Conventional impeller has high rotational inertia due to which more energy is imported to the pump stator.
The conventional impeller causes clogging is choke up.
The Conventional impeller have higher weight which consume more power.
The conventionally used impeller for hygienic application closed type or semi-open type. In these conventional impellers the product particles get entangled and results in the growth of bacteria which contaminates the product.
The conventional impeller are not easy to clean, particularly the closed portion.
The present invention is developed with a goal to overcome the disadvantages of conventional methods and provide a better alternative.
The object of the present invention is to develop an impeller with a proper vane angle, radius, thickness, tip design, and the hub-design.
The other object of the invention is to develop an impeller with specific shade, specific shape and efficiency.
The object of the invention is to provide automatic hydraulic balancing of impeller.
The object of the present invention is to avoid clogging of and hence no growth of bacteria in the pump.
The weight of impeller should be minimum to have minimum power consumption.
The present impeller should have reduced rotational inertia. So that less energy is imparted.
Figure (A) shows the elevation.
Figure (B) shows side view of the impeller.
Figure illustrates Vane (1), Vane Taper (2), Vane Radius & thickness (3), holes (4)
Figure (A) illustrates Hub (5), Vane angle (6), Vane height (7), Tip Height (8), Impeller diameter (9).
The present invention comprises of four vanes and a maximum diameter of 130mm. A Pump impeller to be used in hygienic pumps should have open type design. This is necessary to avoid clogging and for the gentle handling of the product. The products handled are food, pharmaceutical and biomasses etc., This needs an impeller which does not damage the product consistency and structure. At the same time it should maintain the pumping efficiency. Hence, the VANE design the vane angle, tip design etc are very critical. The VANE ANGLE is designed in such a way that it is qunique for this impeller and results in maximum efficiency. The vane radius is very smooth and does not damage the product. The TIP of the impeller is designed to rotate at optimum speed and at the same time it will not damage the product. The number of vanes in an impeller decides the maximum capacity it can give and the maximum efficiency it can achieve. Achieving maximum efficiency is a must for the pump to operate economically.
The thickness of the vanes is very critical so as to keep the weight of the impeller minimum to have minimum power consumption and save on power bills over a period of time during the life of the pump.
The maximum diameter of the impeller is 130mm. It is designed to use the same impeller for different capacities by trimming as required (to a certain extent only). Otherwise, one has to have different impellers for different capacities which is not advisable and practical.
There are two HOLES exactly opposite to each other and take care of automatic hydraulic balancing of the impeller. Since it is a very small impeller, dynamic balancing is not a must. Due to the HOLES provided there will be self balancing during operation.
This being an open impeller, it is necessary to have an HUB for assembling it on a rotating shaft. Being hygienic, the hub cannot be too big also. It is designed in such a way that it serves the purpose of assembling on a rotating shaft and at the same time does not hamper the performance. The weight of the hub is kept minimum and optimal to this design.
The present invention "Impeller with four vanes with Maximum Diameter of 130mm for pump with optimum capacity, Head and Efficiency" has many advantages. Some of them are mentioned below:-
The present invention gives the best efficiency for its size because of its special vane design, vane angle, tip design and the hub design.
The present impeller being open impeller there are no clogging and hence growth of bacteria in the pump.
The product handling is gentle and harmless to the product. The same impeller can be used for vide range of capacity by trimming.
The present impeller being of open type, every point of the impeller is easily accessible for cleaning.
The weight of the present invention is minimum to have minimum power consumption.
The present impeller provides automatic hydraulic balancing of the impeller.
1. A pump impeller with four vanes and two holes comprising of hub for the purpose of assembling on a rotating shaft, the impeller having diameter 130 mm and vane tip extending from vane body having a leading edge cutting edge at out ward extremity designed uniquely for maximum efficiency the said two hole on the impeller being exactly opposite to each either which control automatic hydraulic balancing of the impeller,
2. A pump impeller of claim 1, comprising hub for assembling it on a rotating shaft having six vanes with diameter 145 mm to 163 mm with vane angle 15, the said vane body having leading edge, cutting edge with outward extremity,
3. The pump impeller as herein described and claimed,
Dated this T day of March 2002,
\gent for applicant
|Indian Patent Application Number
|PG Journal Number
|Date of Filing
|Name of Patentee
|MR. GAJANAN HEGDE
|J-340,MIDC INDUSTRIAL AREA, BHOSARI, PUNE,
|PCT International Classification Number
|F 04 D 29/22
|PCT International Application Number
|PCT International Filing date