DESC:FORM 2

THE PATENTS ACT, 1970

(39 of 1970)

&

THE PATENT RULES, 2003

COMPLETE SPECIFICATION

[See Section 10 and Rule 13]

TITLE:

“A LEAK PROOF BIDIRECTIONAL COOLANT SOLENOID 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, Farookh Nagar 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 the field of valves. More particularly, the present invention relates to a leak proof bidirectional linear coolant flow control solenoid valve to control the flow of coolant in both the directions and have balanced pressure to avoid internal leakage in the valve.

BACKGROUND OF THE INVENTION
The solenoid valves are used to control the flow of liquids or gases with precision and speed through electromagnetic operation. The solenoid valves have the ability to provide quick, reliable, and automated control that provides efficiency in a wide range of industrial, commercial and residential applications. The solenoid valves operate by engaging an electromagnetic coil to open or close a valve, allowing or blocking the passage of fluid through the valve. Solenoid valves have significant role in various industries and systems by providing ON/OFF control of fluid flow. When de-energized, the valve is in the closed position and when energized the valve is in open position, allowing fluid to pass. However, there are several systems, where fluids or gas needs to be reversible, in such cases two separate standard coolant flow control solenoid valves have to be installed.
The bidirectional solenoid valves are simplified control systems in applications that require reversing flow instead of installing two separate standard solenoid valves. In systems, where fluid or gas flow needs to reversible, bidirectional solenoid valves are utilized. The bidirectional solenoid valves handles both forward and reverse flow that is cost-effective in comparison to using two separate standard solenoid valves that results in cost-savings and also reduces the number of components to make the system easier to maintain.
The bidirectional solenoid valve is a specific type of solenoid valve designed to provide linear control over bidirectional flow to regulate fluid or gas flow in both the directions in a proportional and precise manner. These valves offer proportional control over flow rates, allowing precise modulation of fluid or gas flow in both the directions that makes the linear bidirectional solenoid valve for a wide range of industrial and automation applications. Currently rotary BLDC (Brushless direct current) driven bi-directional solenoid valves are available in market, however, there is no linear solenoid operated bi-directional fluid solenoid valve.
CN106523767A discloses a bi-directional solenoid valve which comprises a valve body, a valve element and a guide valve assembly. The valve body is provided with a valve cavity, a main valve port and a connector. The valve element is connected in the valve cavity in a sliding manner and divides the valve cavity into an upper cavity and a lower cavity. The main valve port and the connector communicate with the lower cavity. The valve element cooperates with the main valve port. The guide valve assembly cooperates with the valve element. The bi-directional solenoid valve is provided with a first runner enabling the main valve port to communicate with the upper cavity, a second runner enabling the upper cavity to communicate with the lower cavity and a third runner enabling the upper cavity to communicate with the lower cavity. However, the invention fails to disclose about linear solenoid valve which is used to regulate fluid flow in both the directions in a proportional and precise manner.
CN204717051U discloses a kind of plunger type two-bit triplet bi-directional electromagnetic valve arrangement, be made up of valve body, pilot head sleeve pipe, spool and electromagnetic coil. Valve body left and right end face establishes medium entrance P1 and media outlet P2 respectively. Body cavity upwards sets valve port, establishes iron core in pilot head sleeve pipe. Establish static iron core above dynamic iron core, namely static iron core internal channel lower end is upper valve port. Static iron core and pilot head sleeve pipe form valve rod, and overcoat has electromagnetic coil. Spin in static iron core upper end hold-doun nut, and namely its inner chamber is media outlet P3 vertically upward. Dynamic iron core is plunger, and lower end tapered portion sets up the spring of falling turriform separately, and its internal channel establishes tension spring, and the upper and lower two ends of tension spring establish sealing plug and lower seal chock plug respectively, valve port and lower valve port in the shutoff of upper-lower seal chock plug difference. However, the plunger type two-bit triplet bidirectional electromagnetic valve fails to provide pressure balance in valve to avoid internal leakage in valve.
Therefore, due to above mentioned drawbacks, there is a requirement of a leak proof bidirectional linear coolant flow control solenoid valve that is compact and cost-effective by serving the purpose of two valves in a single solenoid valve.

OBJECT OF THE INVENTION
The main object of the present invention is to provide a leak proof bidirectional linear coolant flow control solenoid valve to control the flow of coolant in both the directions.
Another object of the present invention is to provide a leak proof bidirectional linear coolant flow control solenoid valve for serving the purpose of two valves in order to control coolant flow.
Yet another object of the present invention is to provide a leak proof bidirectional linear coolant flow control solenoid valve that is compact and saves the space in vehicle.
Yet another object of the present invention is to provide a leak proof bidirectional linear coolant flow control solenoid valve that is cost-effective and efficient as flow losses are minimal in both the directions.
Still another object of the present invention is to provide a leak proof bidirectional linear coolant flow control solenoid valve that has balanced pressure to avoid internal leakage in the valve.

SUMMARY OF THE INVENTION
The present invention relates to a compact and cost-effective leak proof bidirectional linear coolant flow control solenoid valve which is operating at identical pressure in both directions without any internal leakage.
In an embodiment, the present invention provides a leak proof bidirectional linear coolant flow control solenoid valve comprises of a housing, a plurality of sealing surfaces, a holder, a spring, a plunger, a mounting bracket and a solenoid body. The plurality of sealing surfaces include a primary sealing surface and a secondary sealing surface. The bidirectional linear coolant flow control solenoid valve has a plurality of sealing surfaces including a primary sealing surface and a secondary sealing surface that are configured to control a flow of coolant through the bidirectional linear coolant flow control solenoid valve. The bidirectional linear coolant flow control solenoid valve operates in a bidirectional mode by occluding and un-occluding the plurality of sealing surfaces based on the internal pressure.
The above objects and advantages of the present invention will become apparent from the hereinafter set forth brief description of the drawings, detailed description of the invention, and claims appended herewith.

BRIEF DESCRIPTION OF THE DRAWINGS
An understanding of the leak proof bidirectional linear coolant flow control solenoid valve thereof of the present invention may be obtained by reference to the following drawing:
Figure 1 is an exploded view of the leak proof bidirectional linear coolant flow control solenoid valve according to an embodiment of the present invention.
Figure 2 is another exploded view of the leak proof bidirectional linear coolant flow control solenoid valve according to an embodiment of the present invention.
Figure 3(a) and 3(b) are perspective views of flow direction of the leak proof bidirectional linear coolant flow control solenoid valve when coolant flow from said primary sealing surface towards said secondary sealing surface according to an embodiment of the present invention.
Figure 4(a) and 4(b) are perspective views of flow direction of the leak proof bidirectional linear coolant flow control solenoid valve when coolant flow from said secondary sealing surface towards said primary sealing surface 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 a leak proof bidirectional linear coolant flow control solenoid valve which is operating at identical pressure in both directions without any internal leakage.
In an embodiment, the present invention provides a leak proof bidirectional linear coolant flow control solenoid valve comprises of a housing, a plurality of sealing surfaces, a holder, a spring, a plunger, a mounting bracket and a solenoid body. The plurality of sealing surfaces include a primary sealing surface and a secondary sealing surface. The bidirectional linear coolant flow control solenoid valve has a plurality of sealing surfaces including a primary sealing surface and a secondary sealing surface that are configured to control a flow of coolant through the bidirectional linear coolant flow control solenoid valve. The bidirectional linear coolant flow control solenoid valve operates in a bidirectional mode by occluding and un-occluding the plurality of sealing surfaces based on the internal pressure.
Figure 1 and Figure 2 are exploded views of the bidirectional linear coolant flow control solenoid valve according to an embodiment of the present invention. The bidirectional linear coolant flow control solenoid valve (10) comprises of a housing (6), a plurality of sealing surfaces, a holder (2), a spring (3), a plunger (5), a mounting bracket (7) and a solenoid body (8). The plurality of sealing surfaces include a primary sealing surface (1) and a secondary sealing surface (4). The spring (3) is securely held by said holder (2) and is attached to said secondary sealing surface (4). The primary sealing surface (1) is attached to said plunger (5) that is connected to a solenoid spring which is securely held inside the solenoid body (8). The plurality of sealing surfaces are preferably made up of rubber sealing with plastic. The holder (2) holds the spring (3) in place and the spring (3) provides a standard force to control the plunger (5). The plunger (5) moves inside the solenoid body (8) to occlude and un-occlude the plurality of sealing surfaces, for controlling flow of coolant. The mounting bracket (7) secures the bidirectional linear coolant flow control solenoid valve (10) to a body. The primary sealing surface (1) and the secondary sealing surface (4) have an ellipsoid shape.
The primary sealing surface (1) and the secondary sealing surface (4) are configured to control a flow of coolant through the bidirectional linear coolant flow control solenoid valve (10). The bidirectional linear coolant flow control solenoid valve (10) operates in a bidirectional mode by occluding and un-occluding the plurality of sealing surfaces based on the internal pressure.
Figure 3(a) and Figure 3(b) are perspective views of flow direction of the leak proof bidirectional linear coolant flow control solenoid valve (10) when coolant flow from said primary sealing surface (1) towards said secondary sealing surface (4) according to an embodiment of the present invention. The leak proof bidirectional linear coolant flow control solenoid valve (10) comprises of two ports (i.e. port A and port B) and is capable of controlling the coolant in both directions (i.e. from port A and port B).
When the input of the coolant flow is from said primary sealing surface (1) towards the secondary sealing surface (4), the primary sealing surface (1) is closed (i.e. occluded) due to internal pressure and the secondary sealing surface (4) is open (i.e. un-occluded) due to internal pressure of the bidirectional linear coolant flow control solenoid valve (10) (refer to Figure 3(b)). In other words, the secondary sealing surface (4) is lifted for providing forward flow of the coolant and in the reverse flow, pressure of the coolant causes the plurality of sealing surfaces to adjust and adjust the flow path.
Figure 4(a) and Figure 4(b) are perspective views of flow direction of the leak proof bidirectional linear coolant flow control solenoid valve (10) when coolant flow from said secondary sealing surface (4) towards said primary sealing surface (1) (in other words from port B to port A) according to an embodiment of the present invention. The leak proof bidirectional linear coolant flow control solenoid valve (10) include the two ports (i.e. port A and port B) and is capable of controlling the coolant in both directions. When the input of the coolant flow is from said secondary sealing surface (4) towards said primary sealing surface (1), said secondary sealing surface (4) is closed due to internal pressure and said primary sealing surface (1) is open due to internal pressure of the bidirectional linear coolant flow control solenoid valve (10). In other words, the primary sealing surface (1) is lifted for providing forward flow of the coolant and in forward flow, the coolant enters the bidirectional linear coolant flow control solenoid valve (10).
In the present invention, the bidirectional linear coolant flow control solenoid valve (10) is working bi-directionally with the solenoid base linear operation. The present invention provide a solenoid-operated valve with bidirectional functionality, allowing coolant to flow in either direction by entering from any port and exiting through the bidirectional linear coolant flow control solenoid valve (10) accordingly.

EXAMPLE 1
Working of the Invention
The present invention provides a leak proof bidirectional linear coolant flow control solenoid valve (10) which includes a plurality of sealing surfaces to allow coolant to enter from any port and exit from leakage proof valve accordingly.
The leak proof bidirectional linear coolant flow control solenoid valve (10) comprises of a housing (6), a plurality of sealing surfaces, a holder (2), a spring (3), a plunger (5), a mounting bracket (7) and a solenoid body (8). The solenoid within the leak proof bidirectional linear coolant flow control solenoid valve (10) is a key component in enabling the control through electromagnetic principles. The plurality of sealing surfaces include a primary sealing surface (1) and a secondary sealing surface (4). The plurality of sealing surfaces are preferably made up of rubber sealing with plastic.
The plunger (5) controls the flow of coolant by moving within the solenoid body (8). The plunger (5) is preferably made up of ferromagnetic material. The plunger (5) is connected to said primary sealing surface (1) to control the flow of coolant through the bidirectional linear coolant flow control solenoid valve (10). The magnetic field attracts the plunger (5) to move within the solenoid body (8) that allows the opening and the closing of the valve (10).
The mounting bracket (7) securely attach and position the leak proof bidirectional linear coolant flow control solenoid valve (10) within the vehicle or system. The mounting bracket (7) is made up of metal, plastic to hold and support the leak proof bidirectional coolant solenoid valve (10) in a fixed position in a specific orientation. The mounting bracket (7) vary based on the size of the bidirectional linear coolant flow control solenoid valve (10), type and the requirement.
The solenoid spring provides a standard force to control the plunger (5). When the spring is energized, it generates a magnetic force that overcomes the spring’s resistance and move the plunger (5) to actuate the solenoid body (8). When the solenoid spring is de-energized, the solenoid spring’s force returns the plunger (5) to the original position.
Therefore, the present invention provides a cost-effective leak proof bidirectional linear coolant flow control solenoid valve for improving efficiency for flow control and distribution of coolant in the vehicle or system.
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 now will be described hereinafter with reference to the detailed description, in which some, but not all embodiments of the invention are indicated. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout. The present invention is described fully herein with non-limiting embodiments and exemplary experimentation.

,CLAIMS:CLAIMS

We claim:
1. A bidirectional linear coolant flow control solenoid valve (10) comprising:
a housing (6);
a holder (2);
a spring (3);
a plunger (5);
a mounting bracket (7); and
a solenoid body (8);
wherein:
said bidirectional linear coolant flow control solenoid valve (10) has a plurality of sealing surfaces including a primary sealing surface (1) and a secondary sealing surface (4) that are configured to control a flow of coolant through the bidirectional linear coolant flow control solenoid valve (10); and
said bidirectional linear coolant flow control solenoid valve (10) operates in a bidirectional mode by occluding and un-occluding the plurality of sealing surfaces based on the internal pressure.
2. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the housing (6) encompasses a plurality of components of the bidirectional linear coolant flow control solenoid valve (10) including the holder (2), the spring (3), the plunger (5) and the solenoid body (8).
3. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the plurality of sealing surfaces are made from material including rubber and plastic.
4. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the holder (2) holds the spring (3) in place and the spring (3) provides a standard force to control the plunger (5).
5. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the plunger (5) moves inside the solenoid body (8) to occlude and un-occlude the plurality of sealing surfaces, for controlling flow of coolant.
6. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the mounting bracket (7) secures the bidirectional linear coolant flow control solenoid valve (10) to a body.
7. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the plunger (5) is made from ferromagnetic material.
8. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the primary sealing surface (1) is lifted for providing forward flow of the coolant and in forward flow, the coolant enters the bidirectional linear coolant flow control solenoid valve (10).
9. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the secondary sealing surface (4) is lifted for providing forward flow of the coolant and in the reverse flow, pressure of the coolant causes the plurality of sealing surfaces to adjust and adjust the flow path.
10. The bidirectional linear coolant flow control solenoid valve (10) as claimed in claim 1, wherein the primary sealing surface (1) and the secondary sealing surface (4) have an ellipsoid shape.