DESC:FORM 2

THE PATENTS ACT, 1970

(39 of 1970)

&

THE PATENT RULES, 2003

COMPLETE SPECIFICATION

[See Section 10 and Rule 13]

TITLE:

“AN ELECTRIC WATER PUMP WITH INTEGRATED FLOW CONTROL VALVE”

APPLICANT:

PV CLEAN MOBILITY TECHNOLOGIES PRIVATE LIMITED
A company incorporated under the Indian Companies Act, 2013
having address at
9.1 Mile Stone, Gurgaon Farookhnagar Road, Village Dhankot, Gurgaon 122001, Haryana, India

PREAMBLE TO THE DESCRIPTION:
The following specification particularly describes the invention and the manner in which it is to be performed:
FIELD OF THE INVENTION
The present invention relates to an electric water pump. More particularly, the present invention relates to an electric water pump with integrated flow control valve which is compact in size, cost effective and have reduced flow losses.

BACKGROUND OF THE INVENTION
Coolant systems are widely used in industries such as automotive, aerospace, power generation, and manufacturing, among others. These systems are configured to regulate and maintain the temperature of various components, ensuring optimal performance and preventing overheating. Further, conventional coolant systems typically include a pump and a separate valve to control the flow rate of coolant. These valves are usually installed at different points in the coolant circuit, requiring additional space, cost, and complexity in the overall system.
The pump is responsible for circulating the coolant through the system, while the valve regulates the coolant flow by adjusting the opening size or restricting the passage. However, the separate pump and valve configuration faces several challenges. Firstly, this configuration requires additional components, such as pipes, connectors, and fittings, to connect the pump and valve together, which increases the complexity of the system, occupies valuable space, and adds to the overall cost of installation and maintenance.
Moreover, the separate type of the pump and valve creates potential leakage points within the system. The connections between the pump and valve, along with the additional components, are susceptible to leaks, leading to coolant loss, reduced efficiency, and potential system failure.
Additionally, the coordination and synchronization between the pump and valve can be challenging. As they operate independently, precise control and synchronization of the coolant flow rate is difficult to achieve, resulting in suboptimal cooling performance and inefficient energy usage.
However, several improvements have been done to integrate valves directly into coolant pumps to simplify the system architecture. However, existing systems suffer from various drawbacks such as limited valve functionality, complex manufacturing processes, and reduced pump efficiency.
US20160144691A1 discloses a hybrid cooling system and method thereof that is capable of using a cooling system for an engine and a cooling system for power electronics parts of a hybrid vehicle as in one unit or separately. However, this invention fails to provide solution that integrates the pump and valve and further this invention faces issues like difficulties during installation, increased flow losses, maintenance, and troubleshooting processes.
WO2004007229A1 discloses a cooling module for an engine of a motor vehicle. Said cooling module comprises a heat exchanger, at least one fan and a coolant pump, whereby a modular frame forms an integral part of the cooling module and the coolant pump is disposed within and/or on said modular frame. However, this invention fails to provide solution that integrates the pump and valve and further this invention faces issues like difficulties during installation, maintenance, and troubleshooting processes.
Therefore, due to abovementioned drawbacks there is a need of more efficient, adaptable, and reliable electric water pump with integrated flow control valve which is compact in size, cost effective and has reduced flow losses.

OBJECT OF THE INVENTION
The main object of the present invention is to provide an electric water pump with integrated flow control valve.
Another object of the present invention is to provide an electric water pump with integrated flow control valve which is compact in size.
Yet another object of the present invention is to provide an electric water pump with integrated flow control valve which is cost effective due to integration of flow control valve.
Still another object of the present invention is to provide an electric water pump with integrated flow control valve which have reduced flow losses.

SUMMARY OF THE INVENTION
The present invention relates to an electric water pump with integrated flow control valve which is compact in size, cost effective and have reduced flow losses.
In another embodiment, the present invention provides an electric water pump with integrated flow control valve comprises of a casing, an outer housing and a cover wherein said electric water pump with integrated flow control valve includes a coolant pump assembly and a coolant flow valve assembly. The coolant pump assembly includes an impeller which is driven by a BLDC motor. The coolant flow valve assembly includes a flow diverter which is driven by a separate BLDC motor. The casing is attached on top of said outer housing to seal said coolant pump assembly and said coolant flow valve assembly. The cover holds an electronics driver unit and is attached on bottom of said outer housing to seal said coolant pump assembly and said coolant flow valve assembly. The electronics driver unit is enabled to provide actuation to said coolant pump assembly and said coolant flow valve assembly simultaneously. The casing, the outer housing and the cover is preferably made of plastic. The electronics driver unit preferably includes a printed circuit board (PCB).

BRIEF DESCRIPTION OF THE DRAWING
An understanding of the electric water pump with integrated flow control valve of the present invention may be obtained by reference to the following drawings:
Figure 1 is a cross-section view of an electric water pump with integrated flow control valve according to an embodiment of the present invention.
Figure 2 is a top view of an electric water pump with integrated flow control valve according to an embodiment of the present invention.
Figure 3(a) is a perspective view of an electric water pump with integrated flow control valve having four way mechanism according to an embodiment of the present invention.
Figure 3(b) is another perspective view of an electric water pump with integrated flow control valve having four way mechanism according to an embodiment of the present invention.
Figure 4(a) is a perspective view of an electric water pump with integrated flow control valve having three way mechanism according to an embodiment of the present invention.
Figure 4(b) is a perspective view of an electric water pump with integrated flow control valve having three way mechanism according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
The present invention will now be described hereinafter with reference to the accompanying drawings in which a preferred embodiment of the invention is shown. This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough, and will fully convey the scope of the invention to those skilled in the art.
Many aspects of the invention can be better understood with references made to the drawings below. The components in the drawings are not necessarily drawn to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, like reference numerals designate corresponding parts through the several views in the drawings. Before explaining at least one embodiment of the invention, it is to be understood that the embodiments of the invention are not limited in their application to the details of construction and to the arrangement of the components set forth in the following description or illustrated in the drawings. The embodiments of the invention are capable of being practiced and carried out in various ways. In addition, the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
The present invention relates to an electric water pump with integrated flow control valve which is compact in size, cost effective due to integration of flow control valve which the electric water pump and have reduced flow losses.
In another embodiment, the present invention provides an electric water pump with integrated flow control valve comprises of a casing, an outer housing and a cover wherein said outer housing includes a pump which is driven by a BLDC motor and a valve which is driven by a separate BLDC motor and an electronics driver unit. The electronics driver unit is enabled to provide actuation to said pump and said motor simultaneously. The pump is connected to a flow diverter which diverts the flow of a coolant.
Referring to Figure 1, a cross-section view of an electric water pump with integrated flow control valve is depicted. The electric water pump with integrated flow control valve (100) comprises of a casing (1), an outer housing (2) and a cover (3). The casing (1), said outer housing (2) and said cover (3) are made up of material that include plastic. The casing (1), said outer housing (2) and said cover (3) are common for both the coolant pump assembly (6) and the coolant flow valve assembly (8).
The electric water pump with integrated flow control valve (100) includes a coolant pump assembly (6) and a coolant flow valve assembly (8). The coolant pump assembly (6) includes an impeller (10) which is driven by a BLDC motor (7). The impeller (10) provides a rotational force in the coolant pump assembly (6). The impeller (10) is connected to the motor (7) for providing the rotational force. Further, as the impeller (10) rotates, the fluid enters the coolant pump assembly (6) near a rotating axis of the impeller (10). Furthermore, the rotation of the impeller (10) generates a centrifugal force which pushes the fluid in an outward direction from a center of the impeller (10) to an edge of the impeller (10). Thereafter, the fluid moves towards the coolant flow valve assembly (8). The fluid include a coolant fluid, water or any other fluid which is known to the person skilled in the art.
The coolant flow valve assembly (8) includes a flow diverter (5) which is driven by a separate BLDC motor (9). The flow diverter (5) diverts the flow of the fluid from pump as per the requirement. The electric water pump with integrated flow control valve include a plurality of outlets (11, 12) for flow distribution (as depicted in Figure 3(a) and Figure 3(b)and Figure 4(a) and Figure 4(b).
The casing (1) is attached on top of said outer housing (2) to seal said coolant pump assembly (6) and said coolant flow valve assembly (8).
The cover (3) holds an electronics driver unit (4) and is attached on bottom of said outer housing (2) to seal said coolant pump assembly (6) and said coolant flow valve assembly (8).
The electronics driver unit (4) is enabled to provide actuation to said coolant pump assembly (6) and said coolant flow valve assembly (8) simultaneously.
The electronics driver unit (4) preferably includes a printed circuit board (PCB) that handles the operation of the coolant pump assembly (6) and the coolant flow valve assembly (8). The electronics driver unit (4) is a common unit for both the coolant pump assembly (6) and the coolant flow valve assembly (8).
Referring to Figure 2, a top view of an electric water pump with integrated flow control valve is depicted. The casing (1) is attached on top of said outer housing (2) to seal said coolant pump assembly (6) and said coolant flow valve assembly (8).
The electric water pump with integrated flow control valve (100) having four way mechanism (referred as A, B, C and D) is depicted in Figure 3(a) and Figure 3(b). The electric water pump with integrated flow control valve (100) having three way mechanism (referred as A, B, and C) in depicted in Figure 4(a) and Figure 4(b). Further, the four way mechanism and the three way mechanism depicted in Figure 3(a) and Figure 3(b)and Figure 4(a) and Figure 4(b) are exemplary and does not limit the implementation of the present invention. Moreover, the present invention may have any such number of mechanism as required to implement the present invention.
Therefore, the present invention provides an electric water pump with integrated flow control valve which is compact in size, cost effective and have reduced flow losses. The present invention is compact in size due to which the overall size of the thermal management system in electric vehicles are reduced. Further, the electric water pump with integrated flow control valve achieves high efficiency due to minimal flow losses. Further, due to some common component such as common PCB and an integrated architecture of the present invention, an overall manufacturing cost is reduced.
Many modifications and other embodiments of the invention set forth herein will readily occur to one skilled in the art to which the invention pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principals of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.
,CLAIMS:CLAIMS
We claim:
1. An electric water pump with integrated flow control valve (100), comprising:
a casing (1);
an outer housing (2); and
a cover (3);

wherein,
said electric water pump with integrated flow control valve (100) includes a coolant pump assembly (6) and a coolant flow valve assembly (8);

said coolant pump assembly (6) includes an impeller (10) which is driven by a motor (9);

said coolant flow valve assembly (8) includes a flow diverter which is driven by another motor (9);

said casing (1) is attached on top of said outer housing to seal said coolant pump assembly (6) and said coolant flow valve assembly (8);

said cover (3) holds an electronics driver unit and the cover (3) is attached on bottom of said outer housing (2) to seal said coolant pump assembly (6) and said coolant flow valve assembly (8); and

said electronics driver unit (4) is enabled to provide actuation to said coolant pump assembly (6) and said coolant flow valve assembly (8) simultaneously.

2. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said casing (1), said outer housing (2) and said cover (3) are made up of material that include plastic.

3. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said electronics driver unit (4) preferably includes a printed circuit board (PCB) that handles the operation of the coolant pump assembly (6) and the coolant flow valve assembly (8).

4. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said electronics driver unit (4) is a common unit for both the coolant pump assembly (6) and the coolant flow valve assembly (8).

5. The electric water pump with integrated flow control valve as claimed in claim 1, wherein said motors (9) are brushless direct current (BLDC) motors.

6. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said flow diverter (5) diverts the flow of a fluid from pump as per the requirement.

7. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said electric water pump with integrated flow control valve (100) include a plurality of outlets for flow distribution.

8. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said impeller (10) provides a rotational force in the coolant pump assembly (6).

9. The electric water pump with integrated flow control valve (100) as claimed in claim 1, wherein said casing (1), said outer housing (2) and said cover (3) are common for both the coolant pump assembly (6) and the coolant flow valve assembly (8).

Dated this 8th day of August, 2024