JP2023508965A - Solenoid valve and gas cooktop - Google Patents

Abstract

Embodiments of the present application relate to the technical field of valves and provide solenoid valves and gas cooktops. A solenoid valve includes a valve body, a valve stem, and an electromagnet. The valve body includes mounting holes. A sealing member is disposed on the peripheral wall of the mounting hole. A valve stem is disposed through the mounting hole and is sealingly connected to the mounting hole by a sealing member. An electromagnet is disposed within the inner cavity of the valve body and is configured to attract the valve stem for movement toward the armature. A gas cooktop includes a solenoid valve. In the solenoid valve, the mounting hole of the valve body is provided with a sealing member, so that the valve stem is effectively sealed by the sealing member, with a simple sealing assembly method and sufficient sealing effect. advantage can be achieved.

Description

The present application relates to the technical field of valves, and in particular to solenoid valves.

2. Related Art Solenoid valves are common elements used to control the on and off states of liquid and gas flows in pipelines, and are usually separated by a housing, a valve stem, and a valve within the housing. and electromagnets arranged in parallel with each other. The energization of the electromagnet is controlled to control the armature to attract the valve stem to switch between the open and closed states of the solenoid valve.

However, in the prior art, in the method of assembling the housing and the valve stem of the solenoid valve, mounting holes are usually provided in the housing, and a small loose fit is formed between the mounting holes and the valve stem, and the housing and the valve stem are assembled. A seal and attachment with the valve stem is achieved. However, the sealing in this assembly scheme is inadequate. During use, liquids and gases in the line tend to penetrate some of the solenoid valve housing through the slight clearance between the mounting hole and the valve stem and corrode the electromagnet.

In view of the above, the prior art solenoid valves suffer from poor sealing in the housing and valve stem assembly scheme, which is prone to corrosion of the armature or coil.

SUMMARY To this end, the present application seeks to solve a problem in the prior art, namely that the sealing assembly between the housing and the valve stem of the solenoid valve tends to be inadequate and prone to corrosion of the armature or coil. To provide a solenoid valve used in

A solenoid valve according to the present application includes a valve body, a valve stem, and an electromagnet,
the valve body includes an inner cavity and a mounting hole connecting the inner cavity to the external environment, a sealing member disposed on a peripheral wall of the mounting hole;
a valve stem disposed through the mounting hole and partially within the inner cavity and sealingly connected to the mounting hole by a sealing member;
An electromagnet is disposed in the inner cavity and is configured to attract the valve stem for movement toward the electromagnet.

In a possible design, the sealing member is a sealing ring and the peripheral wall of the mounting hole is provided with an annular groove for mounting the sealing ring.

In a possible design, the sealing member is a helical sealing strip and the peripheral wall of the mounting hole is provided with a helical groove for mounting the helical sealing strip.

In a possible design, the sealing member is manufactured from nitrile butadiene rubber.

In a possible design, the cross-sectional shape of the sealing member is an arc projecting towards the center of the mounting hole.

In a possible design the solenoid valve further comprises a gasket,
A gasket is located at the end of the valve stem opposite the valve body and seals the conduit under actuation of the valve stem.

In a possible design, the end face of the gasket facing away from the valve body is the sealing face, which is provided with a plurality of concentric abutting sealing rings.

In a possible design, three abutting sealing rings are provided, which are spaced apart from one another from the outside to the inside in the radial direction of the sealing surface.

In a possible design, one of the plurality of abutting seal rings is arranged at the periphery of the sealing surface and is of right triangular cross-sectional shape,
One side of the right angle is flush with the sealing surface and the other side of the right angle is flush with the peripheral wall of the gasket.

In a possible design, the cross-sectional shape of the abutment seal rings arranged inside the peripheral edge of the sealing surface among the plurality of abutment seal rings is each set to be arcuate.

In a possible design, the solenoid valve further includes a compression spring,
A compression spring is sleeved on the outside of the valve stem with one end of the compression spring abutting the gasket and the other end abutting the valve body.

Additionally, embodiments of the present application further provide a gas cooktop comprising a solenoid valve as described above, wherein the solenoid valve is arranged in a gas line of the gas cooktop.

With respect to the above technical solutions, the beneficial effects of the present application are analyzed as follows.

A solenoid valve provided herein includes a valve body, a valve stem, and an electromagnet. The valve body includes an inner cavity and a mounting hole connecting the inner cavity to the external environment, with a sealing member disposed on a peripheral wall of the mounting hole. A valve stem is disposed through the mounting hole, partially located in the inner cavity, and sealingly connected to the mounting hole by a sealing member. An electromagnet is disposed within the inner cavity and is configured to attract the valve stem for movement toward the electromagnet.

During use of the solenoid valve, the valve stem is sealingly connected to the mounting hole by means of a sealing member arranged on the peripheral wall of the mounting hole so that external liquids, gases or any other contaminants can enter between the mounting hole and the valve stem. It prevents intrusion into the inner cavity of the valve body through the mounting gap between them, and has the advantages of simple seal assembly method and sufficient sealing effect.

Additionally, embodiments of the present application further provide a gas cooktop comprising a solenoid valve as described above, wherein the solenoid valve is arranged in a gas line of the gas cooktop.

A gas cooktop can achieve all the beneficial effects of a solenoid valve. Details will not be described again here.

Other features and advantages of embodiments of the present application are set forth in the following specification, and in part will be apparent from the specification, or may be learned by implementing the embodiments of the present application. The objectives and other advantages of the embodiments of the present application will be realized and obtained by the structure particularly pointed out in the specification and the accompanying drawings.

1 is an overall cross-sectional view of an electromagnetic valve according to an embodiment of the present application; FIG. 4 is a cross-sectional view of a valve body of a solenoid valve according to an embodiment of the present application; FIG. FIG. 3 is a partially enlarged view of FIG. 2; FIG. 2 is a partially enlarged view of FIG. 1;

The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments compatible with this application and are used to explain the principles of this application together. be.

DETAILED DESCRIPTION To make the technical solutions of the present application more comprehensible, the embodiments of the present application are described in detail with reference to the accompanying drawings.

Of course, the described embodiments are merely some but not all of the embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present application without ingenuity shall fall within the protection scope of the present application.

The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the embodiments of this application and in the appended claims, the singular forms "a," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" herein is merely a relationship relationship to describe objects that are related to each other, and that three types of relationships can exist. . For example, A and/or B may represent the following three cases. Only A is present, both A and B are present, and only B is present. Additionally, the symbol "/" herein generally indicates an "or" relationship between related objects.

Orientation terms described by embodiments of the present application, such as “up,” “down,” “left,” and “right,” are described from the perspective shown in the accompanying drawings and are considered limitations on the embodiments of the present application. It should be noted that it should not be Additionally, when in context a reference is made to an element connected to another element, that element may be indirectly connected to the other element through intermediate elements, as well as directly connected to the other element. It should further be understood that they may also be connected.

Specific embodiments are described below due to the construction of the solenoid valves provided in the embodiments of the present application.

FIG. 1 is an overall cross-sectional view of an electromagnetic valve according to an embodiment of the present application. FIG. 2 is a cross-sectional view of the valve body of the solenoid valve according to the embodiment of the present application. 3 is a partially enlarged view of I in FIG. 2. FIG. FIG. 4 is a partial enlarged view of I in FIG.

As shown in FIGS. 1 and 4, embodiments of the present application provide solenoid valves. The solenoid valve includes a valve body 1 , a valve stem 2 and an electromagnet 3 . The valve body 1 includes an inner cavity 12 and mounting holes 13 connecting the inner cavity 12 to the outside environment. A sealing member 11 is arranged on the peripheral wall of the mounting hole 13 . The valve stem 2 is disposed through the mounting hole 13 and is partially located within the inner cavity 12 and is sealingly connected to the mounting hole 13 by the sealing member 11 . Electromagnet 3 is disposed within inner cavity 12 and is configured to attract valve stem 2 to move toward electromagnet 3 .

During use of the solenoid valve, the valve stem 2 is sealingly connected to the mounting hole 13 by means of a sealing member 11 arranged on the peripheral wall of the mounting hole 13 to prevent external liquids, gases or any other impurities from entering the mounting hole 13. and the valve stem 2 from entering the inner cavity 12 of the valve body 1, and has the advantages of a simple seal assembly method and sufficient sealing effect.

In an alternative solution of this embodiment, the sealing member 11 is a sealing ring, and the peripheral wall of the mounting hole 13 is provided with an annular groove for mounting the sealing ring.

Specifically, as shown in FIGS. 2 and 3, the sealing member 11 is arranged as a sealing ring and fixedly attached to the peripheral wall of the mounting hole 13 by means of an annular groove, thereby providing a sealing. The stop member 11 can completely seal the peripheral wall of the mounting hole 13 by 360 degrees, and the assembly effect of sealing the mounting hole 13 and the valve stem 2 by the sealing member 11 can be completely secured.

During the assembly of the sealing member 11 and the valve body 1, the sealing member 11 may firstly be fixed and restricted in the injection mold of the valve body 1 by clamping, after which the injection molding of the valve body 1 is completed. It should be noted that After injection molding of the valve body 1 is completed, the sealing member 11 is fixed and embedded in the annular groove of the peripheral wall of the mounting hole 13 . This mounting method has the advantages of strong mounting effect and simple process.

Additionally, this embodiment further provides an alternative alternative solution for the sealing member 11 . The sealing member 11 is a helical sealing strip, and the peripheral wall of the mounting hole 13 is provided with a helical groove for mounting the helical sealing strip.

The sealing member 11 comprises a helical sealing strip and is fixedly attached to the peripheral wall of the mounting hole 13 by means of a helical groove so that this sealing member 11 also covers the peripheral wall of the mounting hole 13 through 360°. and the helical sealing strip can further seal the mounting hole 13 and the valve stem 2 with a plurality of rings to abut both, thereby providing a mounting stability of the valve stem 2 can be further improved.

Indeed, the specific attachment of the helical sealing strip to the mounting holes 13 may be the same as described above. The helical sealing strip may first be fixed and restricted in the injection mold of the valve body 1 by clamping. After the injection molding of the valve body 1 is completed, the helical sealing strip is fixedly embedded in the annular groove of the peripheral wall of the mounting hole 13 .

In an alternative solution of this embodiment, the sealing member 11 is manufactured from nitrile-butadiene rubber.

Compared to conventional rubber, nitrile butadiene rubber has excellent oil resistance, abrasion resistance, heat resistance and airtightness, and is sufficiently resistant to mineral, liquid, animal and vegetable oils and solvents. have. Additionally, the temperature that nitrile-butadiene rubber can withstand in long-term use can reach 120° C., making nitrile-butadiene rubber an optimal material for the sealing member 11 .

In an alternative solution of this embodiment, the cross-sectional shape of the sealing member 11 is arc-shaped protruding toward the center of the mounting hole.

Specifically, as shown in FIG. 3, the cross-sectional shape of the sealing member 11 has an arcuate shape protruding toward the center of the mounting hole, thereby allowing the valve stem 2 to extend into the mounting hole 13. Easy to insert into. When the valve stem 2 is fully inserted into the mounting hole 13 , the valve stem 2 crushes and deforms the arcuate protrusion of the sealing member 11 to conform and abut against the peripheral wall of the valve stem 2 . When the valve stem 2 is sealed together with the mounting hole 13 , the sealing member 11 is prevented from being excessively crushed and abutting the valve stem 2 , and the valve stem 2 is pushed along the mounting hole 13 . Proper exercise is prevented.

In an alternative solution of this embodiment, the solenoid valve further includes a gasket 4 . A gasket 4 is arranged at the end of the valve stem 2 opposite the valve body 1 and is capable of sealing the pipeline under actuation of the valve stem 2 .

Specifically, as shown in FIGS. 1 and 4, the gasket 4 material may be nitrile butadiene rubber as described above. The shape of the gasket 4 may be cylindrical. The valve stem 2 drives and moves the gasket 4 to seal the pipeline, thereby achieving the beneficial effects of simple structure and suitable and quick opening and closing of the pipeline.

In an alternative solution of this embodiment, the end face of the gasket 4 facing away from the valve body 1 is a sealing face, which is provided with a plurality of concentric abutting sealing rings 41. It is

Specifically, as shown in FIGS. 1 and 4, a plurality of concentric abutting seal rings 41 can divide the sealing surface of the gasket 4 into a plurality of concentric annular regions. When the gasket 4 abuts on the pipeline to seal the pipeline, the abutment seal ring 41 first abuts on the sealing position of the pipeline, and then the gasket 4 further moves to the sealing position of the pipeline. abutting so that the sealing surface of the gasket 4 conforms to and abuts the sealing position of the pipeline to achieve a perfect secondary seal.

If particulate impurities in the pipeline adhere to the sealing surface of the gasket 4, the abutment and sealing effect between the sealing surface and the pipeline will be affected. However, the two adjacent abutment seal rings 41 can surround the particle impurities adhering to the sealing surface of the annular area, and the sealing effect of this area is limited by the two adjacent abutment seal rings 41. Secured.

The abutment seal ring 41 can achieve secondary sealing between the pipeline and the sealing surface, and improve the sealing effect of the gasket 4 .

In an alternative solution of this embodiment, three abutting sealing rings 41 are provided, the three abutting sealing rings 41 being spaced from each other from the outside to the inside in the radial direction of the sealing surface. are placed.

Specifically, as shown in FIGS. 1 and 4, three abutting seal rings 41 are provided to divide the sealing surface of the gasket 4 into three concentric annular regions. When the gasket 4 seals the pipeline and abuts on this pipeline, the three abutment seal rings 41 abut on the sealing position of the pipeline to achieve primary sealing, and then the gasket 4 is placed on the pipeline. Further abutting the sealing position of the passage, whereby the three annular regions of the sealing surface conform and abut the sealing position of the conduit to achieve a complete secondary seal.

If the amount of the contact seal ring 41 is excessively small, the primary sealing between the contact seal ring 41 and the sealing position of the pipeline tends to be insufficient. If the amount of the contact seal ring 41 is excessively large, the secondary sealing between the sealing surface of the gasket 4 and the sealing position of the pipeline tends to be insufficient. Therefore, three abutting seal rings 41 are arranged.

In an alternative solution of the present embodiment, one of the plurality of abutment seal rings 41 is arranged at the periphery of the sealing surface and has a right-angled triangular cross-sectional shape with one right-angled One side is coplanar with the sealing surface and the other perpendicular side is coplanar with the peripheral wall of the gasket 4 .

Specifically, as shown in FIG. 4, the abutting seal rings 41, which are arranged on the periphery of the sealing surface, are arranged in the form of right triangles. One side of the right angle is flush with the sealing surface and the other side of the right angle is flush with the peripheral wall of the gasket 4 . Such a structure can form a flared structure between the abutment seal ring 41 and the sealing surface, and can perfectly ensure the abutment sealing at the sealing position of the pipeline.

In the alternative solution of the present embodiment, among the plurality of contact seal rings 41, the cross-sectional shape of the contact seal ring 41 arranged inside the peripheral edge of the sealing surface is set to an arc shape. ing.

Specifically, as shown in FIG. 4, the cross-sectional shape of the abutment seal ring 41 arranged inside the peripheral edge portion of the sealing surface is set to be arcuate. Therefore, when the abutment seal ring 41 abuts the sealing position of the pipeline, the arcuate protruding portion of the abutment seal ring 41 tends to deform when crushed, thereby providing an abutment seal. A better abutment between the ring 41 and the line sealing position is facilitated and preferably the sealing surface of the gasket 4 moves toward the line into the line sealing position. Easier to contact.

In an alternative solution of this embodiment, the solenoid valve further comprises a compression spring 5, which is sleeve-like mounted on the outside of the valve stem 2 and one end of the compression spring 5 is in contact with the gasket 4 and the other end is in contact with the valve body 1 .

Specifically, as shown in FIG. 1, the compression spring 5 can provide a resilient force to move the gasket 4 away from the valve body 1, thereby causing the gasket 4 to move toward the tube. The sealing position of the pipeline is tightly pressed under the action of elastic force to seal the . When the electromagnet 3 is energized and a magnetic force is generated, the valve stem 2 is attracted, driving the gasket 4 to move toward the valve body 1 and stop abutting and sealing against the pipe.

The valve stem 2 is located within the inner cavity 12 in order to prevent the portion of the valve stem 2 located within the inner cavity 12 of the valve body 1 from moving out of the inner cavity 12 under the action of the compression spring 5. It should be noted that corresponding blocking members may be arranged on the end portions.

Furthermore, the aforementioned compression spring 5 may be arranged within the inner cavity 12 . One end of the compression spring 5 is connected to the valve stem 2 and the other end is connected to the electromagnet 3 . The aforementioned function of the gasket 4 pressing against the pipeline under the action of elastic force can also be realized.

Indeed, the compression spring 5 may alternatively be replaced by another resilient member, such as a leaf spring, provided that the function of imparting a resilient force to the valve stem 2 is achieved.

Additionally, embodiments further provide a gas cooktop comprising a solenoid valve as described above, wherein the solenoid valve is arranged in a gas line of the gas cooktop.

Gas cooktops can include the solenoid valves described above to achieve all the beneficial effects. Details will not be described again here.

The above descriptions are merely preferred embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall fall within the protection scope of the present application.

It should be noted that the features of the dependent claims may be arbitrarily combined with each other and with the features of the independent claims without departing from the concept of the present application.

Reference Signs List 1 valve body 11 sealing member 12 inner cavity 13 mounting hole 2 valve stem 3 electromagnet 4 gasket 41 contact seal ring 5 compression spring

Claims (12)

In a solenoid valve,
A valve body (1) comprising an inner cavity (12), a mounting hole (13) communicating the inner cavity (12) with the external environment, and a sealing member arranged on the peripheral wall of the mounting hole (13). a valve body (1) comprising (11);
A valve stem (2) disposed through said mounting hole (13), partially within said inner cavity (12) and through said sealing member (11) into said mounting hole (13). a sealingly connected valve stem (2);
an electromagnet (3) disposed within said inner cavity (12) and configured to attract said valve stem (2) to move towards said electromagnet (3); ,
A solenoid valve, characterized by comprising: The sealing member (11) according to claim 1, characterized in that said sealing member (11) is a seal ring, and said peripheral wall of said mounting hole (13) is provided with an annular groove for mounting said seal ring. solenoid valve. The sealing member (11) is a helical sealing strip, characterized in that the peripheral wall of the mounting hole (13) is provided with a helical groove for mounting the helical sealing strip. 2. The solenoid valve according to claim 1, wherein 4. Electromagnetic valve according to claim 2 or 3, characterized in that the sealing member (11) is made of nitrile-butadiene rubber. 4. The solenoid valve according to claim 2, wherein the sealing member (11) has an arcuate cross-sectional shape protruding toward the center of the mounting hole. The solenoid valve further comprises a gasket (4),
The gasket (4) is arranged at the end of the valve stem (2) opposite to the valve body (1) and seals the pipeline under actuation of the valve stem (2). 2. The electromagnetic valve according to claim 1, characterized by: The end surface of the gasket (4) on the side opposite to the valve body (1) is a sealing surface, and the sealing surface is provided with a plurality of concentric contact seal rings (41). 7. The solenoid valve according to claim 6, characterized by: Three abutment seal rings (41) are provided, the three abutment seal rings (41) being spaced from each other from the outside to the inside along the radial direction of said sealing surface. 8. The solenoid valve according to claim 7, characterized in that one of the plurality of abutting seal rings (41) is arranged on the periphery of the sealing surface and has a right-angled triangular cross-sectional shape;
Claim 7, characterized in that one side of the right angle is coplanar with the sealing surface and the other side of the right angle is coplanar with the peripheral wall of the gasket (4). Solenoid valve as described. Among the plurality of abutment seal rings (41), the abutment seal rings (41) arranged inside the peripheral edge of the sealing surface each have an arcuate cross-sectional shape. 10. The solenoid valve according to claim 9, characterized by: The solenoid valve further comprises a compression spring (5),
The compression spring (5) is sleeve-like mounted on the outside of the valve stem (2), one end of the compression spring (5) abutting the gasket (4) and the other 7. Electromagnetic valve according to claim 6, characterized in that an end of abuts against the valve body (1). A gas cooking table, comprising the electromagnetic valve according to any one of claims 1 to 11, wherein the electromagnetic valve is arranged in a gas pipeline of the gas cooking table. stand.

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