AU739061B2

AU739061B2 - Pond aerating device

Info

Publication number: AU739061B2
Application number: AU73940/98A
Authority: AU
Inventors: Lee-Shui Tang
Original assignee: LEE SHUI TANG
Current assignee: LEE SHUI TANG
Priority date: 1998-06-29
Filing date: 1998-06-29
Publication date: 2001-10-04
Anticipated expiration: 2018-06-29
Also published as: AU7394098A; ID23313A

Description

P/00/011 28/5/91 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT Name of Applicant: Actual Inventor Address for service is: LEE-SHUI TANG LEE-SHUI TANG WRAY ASSOCIATES 239 Adelaide Terrace Perth, WA 6000 Attorney code: WR Invention Title: "Pond Aerating Device" The following statement is a full description of this invention, including the best method of performing it known to me:- -2- TITLE: POND AERATING DEVICE Field of the Invention The present invention relates to a pond aerating device.

Disclosure of the Invention Accordingly, the invention resides in a pond aerating device comprising a water pump and an air pump, the water pump being adapted to be used when submerged within the pond and having a water inlet and a water outlet, the air pump having an air inlet and an air outlet, the air inlet being adapted to be 0connected to the air above the pond, the air outlet and the water outlet being lo combined to provide a common outlet for joint fluid flow, wherein the air enters the joint fluid flow below the water entering the joint fluid flow.

"According to a preferred feature of the invention, the water pump and air pump are co-axially supported rotary pumps having a common motor.

.0 According to a preferred feature of the invention, the water pump and air pump 15 are integrally housed to provide the common outlet.

.:According to a preferred feature of the invention, the air pump is positioned below the water pump.

According to a preferred feature of the invention, the water pump and the air pump each comprise a rotor having a set of vanes, the rotor for the air pump being integrally associated with the rotor for the water pump.

According to a preferred feature of the invention, the vanes for the water pump are separated from the vanes for the air pump by a separation disc extending radially from a common axis.

3 According to a preferred feature of the invention, the common outlet is provided with a plurality of vertical separating plates adapted to direct the joint fluid flow.

According to a preferred embodiment, the length of each of the vertical separating plates differs from that of the other vertical separating plates.

According to a preferred feature of the invention, the motor is located above the surface of the pond.

According to a preferred embodiment, the integral housing is supported by a plurality of narrow plates engaged with the motor, a spindle extending from the lo motor to rotate the water pump and the air pump.

According to a preferred embodiment, a current disturbing plate is provided vertically between the spindle of the motor and one of said vertical narrow plates.

Brief Description of the Drawings 15 This invention will be better understood by referring to the accompanying drawings by way of example only, wherein: Figure 1 is an exploded perspective view of a pond aerating device in the present invention; and Figure 2 is at cross-sectional view of the pond aerating device in the present invention.

Best Mode(s) for Carrying Out the Invention A preferred embodiment of a pond aerating device according to the present invention, is shown in Figures 1 and 2 and comprises a motor 10, an integral rotor comprising a driving leaf set 20, a housing 30, an air tube 40 and a current disturbing plate The motor 10 is located above the pond water, having a spindle 11.

4 The driving leaf set 20 is located in the pond water, having a plurality of upper curved leaves 21 and a plurality of lower curved leaves 22 separated by a horizontal round disc, connected to and rotated by the spindle 11 of the motor The housing 30 for containing the driving leaf set 20 is connected with the motor 10 with a plurality of vertical elongate narrow plates 31 spaced apart equidistantly, surrounding the driving leaf set 20, and covered with an upper side wall bored with a water inlet 32, through which the lower end of the spindle 11 passes through down to be fixed with the driving leaf set 20. The housing 30 also has a horizontal annular separating plate 33 to divide its interior into two chambers an upper chamber 34 and a lower chamber and an outlet 36 formed in one side, and a plurality of vertical separating plates 37 of different length spaced apart in the outlet 36 in an inclined position.

S.The air tube 40 is L-shaped and fixed at a side of the housing 30, having an air •o 15is inlet 41 atop protruding up through the water level into open air, an air outlet 42 formed in a lower end to insert in the housing 30 and communicate with the lower chamber 35 so as to let air reach the lower chamber The current disturbing plate 50 is fixed vertically between the spindle 11 and one of the elongate narrow plates 31.

S.o.

20 As shown in Fig. 2, the motor 10 and the air inlet 41 are located above the water level, and the housing 30 with the driving leaf set 20 is located in water, with the upper curved leaves 21 being in the upper chamber 34 and the lower curved leaves 22 being in the lower chamber 35. Pond water may flow through the water inlet 32 into the upper chamber 34, but the lower chamber 35 has air coming down through the air tube 40 and also may have a little water coming therein in spite of the horizontal separating plate 33.

The driving leaf set 20 is rotated by the motor 10, and the upper curved leaves 21 rotates to produce centrifugal force to let the pond water in the upper chamber 34 flow out of the outlet 36, so as to permit the pond water to flow crtively. Meanwhile, the lower curved leaves 22 are also rotated to produce 5 centrifugal force, letting the air in the lower chamber 35 flow out of the outlet 36 into the pond water to aerate it.

It should be noted that the housing 30 has vertical separating plates 37 in the outlet 36 in an inclined position, and their sizes are different, not only narrowing the outlet 36 but enabling air to mix with water current so that the water in the upper chamber 34 and the air in the lower chamber 35 may be sent out far'in the pond water. And it should also be noted that when the water in the upper chamber 34 is sent out by the upper curved leaves 21, the water may form a water current wall. And when the air in the lower chamber 35 is sent out by the lower curved leaves 22, it cannot at once rise up, hampered by the water current wall and flow together with the water current wall to a farther location inside the pond water and remain therein for a longer period of time *o before floating up to the water surface, producing bubbles, and thus :I:o performing aerating function to the pond water. There is another point that is 15 noteworthy that though the spindle 11 of the motor 10 rotates with the driving leaf set 20 synchronously, the current distributing plate 50 can hamper rotating sucking force of the upper curved leaves 21 so that water may not form a circulating current around the spindle 11, but flow smoothly into the upper o:ogo chamber 34 and then be sent out by the upper leaves 21.

2o As can be understood from the aforesaid description, the pond aerating device in the present invention has the following advantages over the conventional S•one.

1. It has a simpler structure than the conventional one, and a driving leaves are directly driven by a motor.

2. It has a longer service life than the conventional one, with no provision of a gear set liable to wear and tear., and consequently needing no gear oil. And the motor is located above water, easy for maintenance and repair.

3. It produces no noise caused by a gear set, with the driving leaves located inside pond water, performing pushing water and muffling noise by water as well.

-6- 4. Its aerating function is excellent, aerating water and permitting air stay long in water.

While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the. appended claims are intended to cover all such modifications which may fall within the spirit and scope of the invention.

Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

se e *0,00 *00.0 go.* *Oo* *o *o *o *i *g* go* o o

Claims

1. A pond aerating device comprising a water pump and an air pump, the water pump being adapted to be used when submerged within the pond and having a water inlet and a water outlet, the air pump having an air inlet and an air outlet, the air inlet being adapted to be connected to the air above the pond, the air outlet and the water outlet being combined to provide a common outlet for joint fluid flow, wherein the air enters the joint fluid flow below the water entering the joint fluid flow.

2. A pond aerating device as claimed in claim 1 wherein the water pump and air pump are co-axially supported rotary pumps having a common motor.

3. A pond aerating device as claimed in claim 2 wherein the water pump and air pump are integrally housed to provide the common outlet. A pond aerating device as claimed in claim 3 wherein the air pump is positioned below the water pump.

SSSSSS

5. A pond aerating device as claimed in either one of claims 2 or 3 wherein the water pump and the air pump each comprise a rotor having a set 0.0 of vanes, the rotor for the air pump being integrally associated with the rotor for the water pump.

6. A pond aerating device as claimed in claim 5 wherein the vanes for the water pump are separated from the vanes for the air pump by a separation disc extending radially from a common axis.

7. A pond aerating device as claimed in any one of the previous claims wherein the common outlet is provided with a plurality of vertical separating plates adapted to direct the joint fluid flow.

8. A pond aerating device as claimed in claim 7 wherein the length of each of the vertical separating plates differs from that of the other vertical K separating plates. 8

9. A pond aerating device as claimed in any one of claims 2 to 8 wherein the motor is located above the surface of the pond.

A pond aerating device as claimed in claim 9 wherein the integral housing is supported by a plurality of narrow plates engaged with the motor, a spindle extending from the motor to rotate the water pump and the air pump.

11. The pond aerating device as claimed in Claim 10 wherein a current disturbing plate is provided vertically between the spindle of the motor and one of said vertical narrow plates.

12. A pond aerating device substantially as hereinbefore described, with reference to any one of the accompanying drawings. ooo*

13. A pond aerating device substantially as hereinbefore described with reference to the accompanying drawings. DATED this ninth day of August 2001 LEE-SHUI TANG 15 Applicant WRAY ASSOCIATES Perth, Western Australia Patent Attorneys for Applicant a