Claims:We claim:

1. A liquid cooled submersible motor comprises of; a stator casing (01); a stator (02) placed inside said stator casing; a rotor (03) coaxially positioned inside said stator; an end bells (04) cover the top and bottom opening to form stator chamber (05) and rotatably supports the rotor (03); an supporting element (06) placed on circumference of the stator in order to interconnect stator and stator casing; a liquid (08) packed in said stator chamber to fill up the cavity and vacant spaces.
2. A liquid cooled submersible motor as claimed in claim 1, wherein said supporting element rigidly attached to stator.
3. A liquid cooled submersible motor as claimed in claim 1, wherein said supporting element placed in predefined interval.
4. A liquid cooled submersible motor as claimed in claim 1, wherein cross-sectional shape of supporting element is selected from a group but not limited to disc, oval, oblong, round, square , capsule, triangle, almond, peanut, parallelogram, trapezoidal, pentagonal, hexagonal and octagonal.
5. A liquid cooled submersible motor as claimed in claim 1, wherein said liquid flow in cavity lies between stator and stator casing.
6. A liquid cooled submersible motor as claimed in claim 1 to 5 substantially as described with reference to accompanying drawing.
, Description:Field of the invention
The present invention relates to a motor, more particularly it relates to a development of submersible liquid cooled motor.

Background of the invention
All electrical motors generates heat during its operation, therefore heat dissipation is one of the most important aspect for proper functioning of the motor, consequently there are air cooling and liquid cooling is the way to keep the motor temperature down. However air cooling is not so effective in areas where surrounding temperature are comparatively higher, in order to enhance cooling in such areas liquid cooling is most widely used, liquid cooling is also applicable in places where air cooling is not possible like submersible motor.
Submersible motors dissipates the generated heat to its surrounding liquid by natural convection, which is not sufficient in some cases, thus access heat in motor leads to winding burning, bearing failure and other types of motor failure. Many attempts have been made in the past to solve the above intended problem described in prior arts below.

Such a motor with a cooling system is disclosed in US 7489,057 B2, Wherein A rotor assembly cooling system (100) and method of using same are provided. A portion of the rotor shaft (103) is hollow, the rotor shaft including an open end (107) and a closed end (105). A coolant feed tube (109) is rigidly attached to the rotor shaft (103) using one or more support members (111), thus causing the shaft and the feed tube to rotate at the same rate. Coolant is pumped through the feed tube until it exits the end of the feed tube and flows against the inside surface of the closed end of the rotor shaft causing the coolant to change direction and flow back through the coolant flow region, this region being defined as the space between the outer surface of the feed tube and the inner surface of the hollow rotor shaft.

Such a motor with a cooling system is disclosed in US 8,508,085 B2 wherein Embodiments of the invention provide an electric machine module including an electric machine with a stator assembly. The stator assembly includes a plurality of stator laminations coupled together and a plurality of conductors positioned through axial slots of the plurality of stator laminations. The electric machine module also includes a coolant channel at least partially defined within the axial slots and a housing. The housing at least partially circumscribes the electric machine and at least partially defines a machine cavity which is in fluid communication with the coolant channel.

Many of these units in prior arts are workable for the purpose intended. However, most of them are complicated from production point of view and few of them are simple enough to be practical, but not cost effective and hence submersible liquid cooled motor demands the scope of the invention.

Objects of the Invention
It is an object of the present invention is to provide a submersible motor with improved cooling.
It is another object of the present invention is to provide simple and cost effective design.
It is still another object of the present invention to provide a liquid cooled submersible motor which is easy to manufacture.

Summary of the Invention
The present invention relates to a development of submersible liquid cooled motor in order to improve heat dissipation for proper functioning of the motor.
Submersible motors dissipates the generated heat to its surrounding liquid by natural convection, which is not sufficient in some cases, thus access heat in motor leads to failure and hence submersible liquid cooled motor demands the scope of the invention.
A liquid cooled submersible motor comprises of; a stator casing; a stator placed inside said stator casing; a rotor coaxially positioned in said stator; an end bells cover the top and bottom opening to form stator chamber and rotatably supports the rotor; an supporting element placed on circumference of the stator in order to interconnect stator and stator casing, subsequently liquid packed in said stator chamber and cavity to fill the vacant space. Thus improved liquid contact area of the stator enhances the heat transfer.
Brief Description of Drawings
Further characteristics and advantages of the invention will become better apparent from the description of a preferred but not exclusive embodiment thereof, illustrated only by way of non-limitative example in the accompanying drawings, wherein:

Figure 1 - Illustrates cross sectional front view of present discloser.
Figure 2 - Illustrates cross sectional side view of alternative
embodiment.

Detailed Description of the invention
Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be noted that all of these drawings and description are only presented as exemplary embodiments. It is to note that based on the subsequent description, alternative embodiments may be conceived that may have a structure and method as disclosed herein, and such alternative embodiments may be used without departing from the principle of the disclosure as claimed herein.
It may be appreciated that these exemplary embodiments are provided herein only for enabling those skilled in the art to better understand and then further implement the present disclosure, and is not intended to limit the scope of the present disclosure in any manner.

In accordance with the present invention there is provided a submersible liquid cooled motor comprises of; a stator casing (01); a stator (02) placed inside said stator casing; a rotor (03) coaxially positioned inside said stator (02) and extended from both ends; an end bells (04) cover the top and bottom opening to form stator chamber (05) and rotatably supports the rotor (03); an supporting element (06) placed on circumference of the stator (02) in order to interconnect stator (02) and stator casing (01).

Typically said supporting element (06) rigidly attached to stator (02) and placed in predefined interval, thus a cavity (07) is formed between stator (02) and stator casing (01) fallowed by supporting element (06).

A liquid (08) packed in stator chamber (05) & cavity (07) to fill up the vacant space and transfer the generated heat from stator (02) and rotor (03) to the stator casing (01), from where heat dissipated to the surrounding medium.

The cavity (07) increases the liquid contact area of the stator (02) as a result better heat dissipation from the stator. Moreover supporting element (06) placed on outer periphery of the stator which leads to increase the diameter of stator casing (01), as a result increase in outer surface area of the stator casing (01) thus it facilitates better heat dissipation in surrounding medium. Typically liquid flows from inner wall (09) and outer wall (10) of the stator further enhance the heat dissipation in motor.

Typically cross-sectional shape of the supporting element (06) is selected from a group but not limited to disc, oval, oblong, round, square , capsule, triangle, almond, peanut, parallelogram, trapezoidal, pentagonal, hexagonal and octagonal.