WO2021224828A1

WO2021224828A1 - Vacuum solenoid valve with flexible port orientation

Info

Publication number: WO2021224828A1
Application number: PCT/IB2021/053811
Authority: WO
Inventors: Kabir BHANDARI; Amardip KUMAR; Nitin MANHAS; Tarun Kumar
Original assignee: Padmini Vna Mechatronics Pvt. Ltd.
Priority date: 2020-05-06
Filing date: 2021-05-05
Publication date: 2021-11-11

Abstract

The present invention relates to a vacuum solenoid valve (100), (101) with a flexible port orientation. More particularly, the present invention relates to a vacuum solenoid valve (100), (101) with a plurality of nozzles (1), (14), (17) that rotates at a wide range of angles. Further, the valve is changed from a three way valve (100) to a two way valve (101). The valve is also provided with a sealed assembly formed by joining the plurality of nozzles (1), (17) with bobbin (3).

Description

“VACUUM SOLENOID VALVE WITH FLEXIBLE PORT

ORIENTATION”

FIELD OF THE INVENTION

The present invention relates to a vacuum solenoid valve with a flexible port orientation. More particularly, the present invention relates to a vacuum solenoid valve with a plurality of nozzles that rotates at a wide range of angles. Further, the valve is changed from a three-way valve to a two-way valve. The valve is also provided with a sealed assembly formed by joining the plurality of nozzles with bobbin.

BACKGROUND OF THE INVENTION

The vacuum solenoid valve is an electrical component used to allow the vacuum flow from the intake manifold to an actuator. It is a control unit which when electrically energized or de-energized, either shuts off or allows fluid flow. The solenoid valve has a core assembly having fixed core and moving core, a coil assembly having a coil wound around a bobbin, a spring and like. The vacuum solenoid valves are categorized into two types as two-way valves and three way valves.

The two-way solenoid operated valves are shut-off valves with one inlet port and one outlet port. The three-way valve has three port connections and two valve seats. One valve seat always remains open and the other remains closed during de-energized mode. These two-way valves and three-way valves used in many ON & OFF applications.

In present, there is no provision of converting a three-way valve into a two-way valve and vice versa.

CN103032619A relates to a two-position three-way inverse proportion decompression electromagnetic valve mainly formed by a main valve and a proportion electromagnet, wherein the main valve is formed by a valve body, a valve core which is positioned at the inner part of the valve body, a valve seat which is sleeved on the valve body and an inner valve core which is positioned at the inner part of the valve core and close to one side of the valve seat, and the proportion electromagnet is formed by a sliding bearing, a bearing seat, a pole shoe, an armature, a top rod, a stroke gasket, a stop iron, a spring seat, a regulating spring, a baffle plate, a regulating screw, a baffle plate cushion, a coil and a yoke. In this invention to achieve two positions a three way valve is used.

CN2070391U discloses a dual direction vacuum solenoid valve. The two independent valve rods with valve cores are arranged inside a valve body. The entirety of the dual direction vacuum electromagnetic valve is in a symmetrical shape. The dual-direction vacuum electromagnetic valve is especially suitable for a dual-direction vacuum pipeline and a dual-direction non-corrosion gas pipeline. The dual-direction vacuum electromagnetic valve can realize the cutting-off and the conducting of the pipelines under the condition that valve pipelines are alternately fixed and pressed in a forward direction and a reverse direction. The starting and closing of the dual-direction vacuum electromagnetic valve is realized by that two electromagnetic coils respectively attract two valve rods, or the valve cores are pushed by springs. The air tightness of the dual direction vacuum electromagnetic valve is good. The dual-direction vacuum electromagnetic valve can be quickly opened and closed. In this invention a two-way valve is used for dual direction.

Both, two-way and three-way valves have separate advantages such as in two-way valve filter is integrated with vacuum solenoid valve.

Therefore, there is a need to develop a valve that enables flexibility of conversion of a three-way valve to a two-way valve that can work in different directions.

OBJECT OF THE INVENTION

The main object of the present invention is to provide a vacuum solenoid valve with a flexible port orientation wherein the valve is provided with a plurality of nozzles that rotate at any orientation and addition of filter and filter cap in place of bottom nozzle to convert a three-way valve into a two-way valve.

Another object of the present invention is to provide a vacuum solenoid valve with a completely sealed assembly wherein the plurality of nozzles are joined with bobbin by a method such as but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting. Yet another object of the present invention is to provide rotation of nozzle assembly in which input and output nozzle at an angle ranging from 0 to 360 degree along with rotation of bottom nozzle with 90-degree step locking.

Still another object of the present invention is to provide a provision of changing a three- way valve to a two way valve by replacing the bottom nozzle with a filter and filter cap.

SUMMARY OF THE INVENTION

The present invention relates to a vacuum solenoid valve with a flexible port orientation that rotates a plurality of nozzle at an angle from 0 to 360 degrees and further enables converting a three-way valve to a two-way valve by replacing the bottom nozzle with a filter and filter cap.

In an embodiment, the present invention provides a vacuum solenoid valve comprising a plurality of nozzles, a housing sub assembly having a top portion and a bottom portion and an optional filter cap. The plurality of nozzles includes an inlet nozzle, an outlet nozzle and an atmospheric nozzle. The housing sub assembly encloses a plurality of components such as but not limited to a fixed core sub assembly, a moving core sub assembly, a coil wound around a bobbin and a spring. The inlet and outlet nozzle are positioned at the top portion of the housing sub assembly and the atmospheric nozzle is positioned at the bottom portion of the housing sub assembly wherein the inlet, outlet and atmospheric nozzle are joined to bobbin of housing sub assembly by a method including but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting; the inlet and outlet nozzles rotate at an angle ranging from 0 to 360 degrees; the atmospheric nozzle rotates at an angle ranging from 0 to 360 degrees with 90 degree step locking; the atmospheric nozzle is optionally replaced with a filter and filter cap by bottom nozzle thus converting the three way solenoid valve into a two way solenoid valve.

Therefore, the present invention allows flexibility of nozzles orientation along with changing vacuum solenoid valve from three ways to two way in same valve.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described with reference to the following drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention:

Fig. 1 shows the sectional view of a three-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 2 shows an exploded view of a three-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 3(a) and Fig. 3(b) shows the perspective view of nozzle orientation of a three -way vacuum solenoid valve with accordance to an embodiment of the present invention. Fig. 4(a) and Fig. 4(b) shows the operating modes of a three-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 5 shows the perspective view of a three-way vacuum solenoid valve to two-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 6 shows the sectional view of a two-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 7 shows an exploded view of a two-way vacuum solenoid valve with accordance to an embodiment of the present invention.

Fig. 8(a) and Fig. 8(b) shows the perspective view of nozzle orientation of a two-way valve with accordance to an embodiment of the present invention. Fig. 9(a) and Fig. 9(b) shows the operating modes of a two-way vacuum solenoid valve with accordance to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

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 vacuum solenoid valve with a plurality of nozzles that rotates at a wide range of angles and allows replacement of a bottom nozzle with a filter cap and filter to change the vacuum solenoid valve from a three-way valve to a two-way valve.

In an embodiment, the present invention provides a vacuum solenoid valve comprising a plurality of nozzles, a housing sub assembly having a top portion and a bottom portion and an optional filter and filter cap. The plurality of nozzles includes an inlet nozzle, an outlet nozzle and an atmosphere nozzle. The housing sub assembly encloses a plurality of components such as but not limited to a fixed core sub assembly, a moving core sub assembly, a coil wound around a bobbin and a spring. The inlet and outlet nozzle are positioned at the top portion of the housing sub assembly and the atmosphere nozzle is positioned at the bottom portion of the housing sub assembly wherein the inlet, outlet and atmosphere nozzle are joined to bobbin of housing sub assembly by a method including but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting; the inlet and outlet nozzles rotate at an angle ranging from 0 to 360 degrees; the atmosphere nozzle rotates at an angle ranging from 0 to 360 degrees with 90 degree step locking; the atmosphere nozzle is optionally replaced with a filter and filter cap thus converting the three way solenoid valve into a two way solenoid valve.

Now referring to Fig. 1, the present invention provides the sectional view of a three-way vacuum solenoid valve (100). The valve (100) comprises a plurality of nozzles (1, 14, 17), a housing sub assembly (2) and a plurality of terminals (4, 5). The plurality of nozzles includes an inlet nozzle (1), an outlet nozzle (17) and an atmosphere nozzle (14). The housing sub assembly (2) includes a coil (6) having a resistor (13) wounded on a bobbin (3), a moving core (7), a fixed core (8) with a fixed core insert (9), a spring (10), a mounting bracket (11) and a U bracket (12). The plurality of terminals (4, 5) is provided for electrical inputs. The moving core (7) and fixed core (8) are magnetic in nature and said fixed core (8) is fixed to the bobbin (3) when the coil (6) is energized. The mounting bracket (11) provides magnetic path crimped with U bracket (12) with coiled bobbin (3). The nozzles (1, 14, 17) are joined to the bobbin (3) of the housing sub assembly (2) by the methods such as but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting. The nozzles (1, 14, 17) along with the housing sub assembly (2) form the complete structure of the vacuum solenoid valve (100).

Now referring to Fig. 2, the present invention provides an exploded view of a three-way vacuum solenoid valve (100). The valve (100) comprises a plurality of nozzles (1, 14, 17), a housing sub assembly (2) having a top portion (2a) and a bottom portion (2b). The plurality of nozzles includes an inlet nozzle (1), an outlet nozzle (17) and an atmosphere nozzle (14). The inlet nozzle (1) and outlet nozzle (17) is positioned at the top portion (2a) of the housing sub assembly (2) and the atmosphere nozzle (14) is positioned at the bottom portion (2b) of the housing sub assembly (2). The housing sub assembly (2) encloses a plurality of components such as but not limited to a moving core (7), a fixed core (8), a coil (6) wound around a bobbin (3) and a spring (10).

Now referring to Fig. 3(a) and Fig. 3(b), the present invention shows the perspective view of nozzle orientation of a three-way vacuum solenoid valve (100). The inlet nozzle (1) and an outlet nozzle (17) have a flexible orientation that rotates at an angle ranging from 0 to 360 degrees and said atmosphere nozzle (14) rotates at an angle ranging from 0 to 360 degrees with 90 degrees.

Now referring to Fig. 4(a) and Fig. 4(b), the present invention shows the operating modes of a three-way vacuum solenoid valve (100). During energized mode, the flow of vapor takes place from inlet nozzle (1) to outlet nozzle (17) and during de-energized mode, the flow of vapor takes place from outlet nozzle (17) to atmosphere nozzle (14).

Now referring to Fig. 5, the present invention shows the perspective view of a three-way vacuum solenoid valve to two-way vacuum solenoid valve. The three-way vacuum solenoid valve (100) is optionally provided with a filter (15) and filter cap (16) to convert a three-way vacuum solenoid valve (100) to a two-way vacuum solenoid valve (101). Now referring to Fig. 6, the present invention shows the sectional view of a two-way vacuum solenoid valve (101) comprising a plurality of nozzles (1, 17), a housing sub assembly (2), a filter cap (16) and a plurality of terminals (4, 5). The plurality of nozzles includes an inlet nozzle (1) and an outlet nozzle (17). The housing sub assembly (2) includes a coil (6) having a resistor (13) wounded on a bobbin (3), a moving core (7), a fixed core (8) with a fixed core insert (9), a spring (10), a mounting bracket (11) and a U bracket (12). The filter cap (16) includes a filter (15) for filtering the dust particles. The plurality of terminals (4, 5) is provided for electrical inputs. The moving core (7) and fixed core (8) are magnetic in nature and said fixed core (8) is fixed to the bobbin (3) when the coil (6) is energized. The mounting bracket (11) provides magnetic path crimped with U bracket (12) with coiled bobbin (3). The nozzles (1, 17) are joined to the bobbin (3) of the housing sub assembly (2) by the methods such as but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting and the filter cap (16) is step locked to the bobbin (3) of the housing sub assembly (2). The nozzles (1, 17) along with the housing sub assembly (2) and the filter cap (16) form the complete structure of the two-way vacuum solenoid valve (101).

Now referring to Fig. 7, the present invention provides an exploded view of a two-way vacuum solenoid valve (101). The valve (101) comprises a plurality of nozzles (1, 17), a housing sub assembly (2) having a top portion (2a) and a bottom portion (2b) and a filter cap (16). The plurality of nozzles includes an inlet nozzle (1) and an outlet nozzle (17). The inlet nozzle (1) and outlet nozzle (17) is positioned at the top portion (2a) of the housing sub assembly (2) and the filter cap (16) is positioned at the bottom portion (2b) of the housing sub assembly (2). The housing sub assembly (2) encloses a plurality of components such as but not limited to a moving core (7), a fixed core (8), a coil (6) wound around a bobbin (3) and a spring (10). The filter cap (16) includes a filter (15) to filter the dust particles.

Now referring to Fig. 8(a) and Fig. 8(b), the present invention shows the perspective view of nozzle orientation of a two-way vacuum solenoid valve (101). The inlet nozzle (1) rotates at an angle ranging from 0 to 360 degrees and the filter cap (16) rotates at an angle ranging from 0 to 360 degrees with 90 degrees step locking. Now referring to Fig. 9(a) and Fig. 9(b), the present invention shows the operating modes of a two-way vacuum solenoid valve (101). During energized mode, the flow of vapor takes place from outlet nozzle (17) to inlet nozzle (1) and during de-energized mode, the flow of vapor takes place from outlet nozzle (17) to atmosphere by filter (15) and filter cap (16).

The vacuum solenoid valve is operated by an electronic control unit that controls the switching of the valve. The joining of nozzles and filter cap to the housing sub assembly makes the valve a seal proof thus improving the performance and the life of the valve.

Therefore, the present invention provides a vacuum solenoid valve having a plurality of nozzles to rotate at wide range of angles and at the same time having a provision of converting a three-way valve into a two-way valve.

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. A vacuum solenoid valve (100) with a flexible port orientation, comprising of: a plurality of nozzles (1, 14, 17); a housing sub assembly (2) having a top portion (2a) and a bottom portion (2b) with an optional filter (15) and filter cap (16); and a plurality of terminals (4, 5) for electrical inputs; wherein; said plurality of nozzles (1, 14, 17) comprises an inlet nozzle (1), an outlet nozzle (17) and an atmosphere nozzle (14); said housing sub assembly (2) comprises a coil (6) having a resistor (13) wounded on a bobbin (3), a moving core (7), a fixed core (8) with a fixed core insert (9), a spring (10), a mounting bracket (11) and a U bracket (12); said nozzles (1, 17) are joined to said bobbin (3) of said housing sub assembly (2) that makes said vacuum solenoid valve (100) seal proof which improves performance and prolongs life of said vacuum solenoid valve (100); said inlet and outlet nozzles (1, 17) rotate at an angle ranging from 0 to 360 degrees and said atmosphere nozzle (14) rotates at an angle ranging from 0 to 360 degrees with a 90-degree step locking for flexible orientation; and said atmosphere nozzle (14) is optionally replaced with said filter (15) and filter cap (16), thereby converting said vacuum solenoid valve (100) into a two-way solenoid valve.

2. The vacuum solenoid valve (100) with a flexible port orientation as claimed in claim 1, wherein said nozzles (1, 14, 17) are joined to said bobbin (3) of said housing sub assembly (2) by methods such as but not limited to laser welding, ultrasonic welding, adhesive, hot state, snap fitting.

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3. The vacuum solenoid valve (100) with a flexible port orientation as claimed in claim 1, wherein said inlet nozzle (1) and outlet nozzle (17) is positioned at the top portion (2a) of said housing sub assembly (2) and said atmosphere nozzle (14) is positioned at said bottom portion (2b) of said housing sub assembly (2).

4. The vacuum solenoid valve (100) with a flexible port orientation as claimed in claim

1, wherein said moving core (7) and fixed core (8) are magnetic in nature and said fixed core (8) is fixed to the bobbin (3) when said coil (6) is energized.

5. The vacuum solenoid valve (100) with a flexible port orientation as claimed in claim 1, wherein said mounting bracket (11) provides magnetic path crimped with said U bracket ( 12) with said coiled bobbin (3).

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