KR20150129295A - Surface contact type solenoid valve - Google Patents

Abstract

The present invention is not only capable of reducing the weight through simplification of the structure, but also facilitates fabrication and assembly, smooth fluid flow in the interior, excellent blocking ability of the fluid, excellent removal of foreign matter contained in the fluid, The solenoid valve includes a valve body having an inlet passage and an outlet passage formed at a side and a bottom of the operating space, respectively; A solenoid driving module provided in the valve body, the solenoid driving module having a solenoid and an elastic member; A sheet member provided on a bottom surface of the operation space and formed of an elastic material and having an outflow hole connected to the outflow passage; And a plunger provided to the operating space by the solenoid and the elastic member so as to reciprocate so as to open and close the outlet hole and provided with a surface contact portion that is in surface contact with the sheet member.

Description

[0001] The present invention relates to a surface contact type solenoid valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface contact type solenoid valve, and more particularly, to a surface contact type solenoid valve having a fluid flow smoothly inside and excellent in a fluid blocking force.

In general, a valve widely used as a means for opening and closing a fluid flow can be configured in various forms and structures. Among these valves, a solenoid valve opens and closes the flow of fluid by using an electromagnetic field generated by the supply of power As a valve, it can be remotely controlled, is easy to use, and is used to control the control conditions such as the level, temperature and pressure of various fluids flowing along the piping due to the high operating speed of the valve.

As a solenoid valve according to a conventional example, there is a housing unit for a solenoid valve of Korean Patent No. 10-0653363 and a solenoid valve provided with the housing unit. This is because a plunger driven by an electromagnetic thrust generated by excitation by a current applied to the solenoid coil opens and closes at least one port of a plurality of ports through which the fluid enters and leaves, A housing provided in a solenoid valve configured to change a path, the housing being fitted in the solenoid coil and having a hollow shape so that the plunger can linearly move inside the solenoid coil; A fixed iron core fixed to the housing; And coupling means for coupling the housing and the fixed core to each other.

However, such a conventional solenoid valve has a problem in that when the flow of fluid is interrupted, the opening and closing member contacts the periphery of the hole at the upper end of the outlet port to limit the leakage of the fluid completely. Particularly, when a conventional solenoid valve is used to open and close the flow of a liquid material such as condensed water, the partition wall formed between the inlet port and the outlet port interferes with the flow of the liquid material and the liquid material can not flow smoothly, This applies equally when used to open or close the flow of gas.

Further, since the conventional solenoid valve is structurally complicated and does not have a structure for removing foreign substances contained in the fluid, a member for removing foreign substances can not be stably installed, and a separate filter member is used Which is a difficult problem.

The idea of the present invention is not only to reduce the weight through simplification of the structure but also to facilitate fabrication and assembly, smooth fluid flow in the inside, excellent fluid blocking ability, and furthermore, Contact type solenoid valve capable of stably and easily installing a member for this purpose. However, these problems are illustrative, and thus the scope of the present invention is not limited thereto.

According to an aspect of the present invention, there is provided a surface contact type solenoid valve including: a valve body having an inlet channel and an outlet channel formed at a side and a bottom of an operating space, respectively; A solenoid driving module provided in the valve body, the solenoid driving module having a solenoid and an elastic member; A sheet member provided on a bottom surface of the operation space and formed of an elastic material and having an outflow hole connected to the outflow passage; And a plunger provided to the operating space by the solenoid and the elastic member so as to reciprocate so as to open and close the outlet hole and provided with a surface contact portion that is in surface contact with the sheet member.

A surface contact type solenoid valve according to an aspect of the present invention includes: a mesh socket which is disposed around the plunger and spaced apart from an inner surface of the working space, wherein at least one inlet is formed; And a mesh member mounted on an outer surface of the mesh socket.

According to an aspect of the present invention, the solenoid driving module may include a threaded portion to be screwed into the operation space, and the mesh socket may be formed with a support flange supported by the threaded portion.

According to an aspect of the present invention, the sheet member is in the form of a plate on which the mesh socket is seated, and may be made of fluorine rubber.

According to the idea of the present invention, the plunger may be formed in the shape of a ring-shaped protrusion at the end of the surface contact portion.

According to an aspect of the present invention, the plunger may be formed in multiple such that the surface contact portion is concentric with the end.

According to an aspect of the present invention, the plunger may be formed such that a line abutting portion, which is in line contact with the sheet member, is concentric with the surface abutting portion.

According to the embodiments of the present invention as described above, not only the weight can be reduced by simplifying the structure, but also the manufacturing and assembling are facilitated and the structure for obstructing the flow of the fluid inside is minimized, And the plunger and the resilient sheet member are brought into surface contact or multiple contact so that the blocking force of the fluid is improved and further the ability of removing the foreign substances contained in the fluid by the mesh member is excellent, So that the mesh member can be stably and easily installed. Of course, the scope of the present invention is not limited by these effects.

1 is a perspective view showing a surface-contact type solenoid valve according to some embodiments of the present invention.
2 is a cross-sectional view of Fig.
3 is a cross-sectional view showing the main part of Fig.
Figure 4 is a cross-sectional and bottom view of a plunger in a surface-contacting solenoid valve in accordance with some embodiments of the present invention.
Figure 5 is a perspective view of a mesh socket and mesh member in a face-contact solenoid valve according to some embodiments of the present invention.
6 is a cross-sectional view and a bottom view illustrating another example of a plunger in a surface-contact type solenoid valve according to some embodiments of the present invention.
7 is a cross-sectional view and a bottom view showing another example of a plunger in an surface-contact type solenoid valve according to some embodiments of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

FIG. 1 is a perspective view showing a surface contact type solenoid valve according to some embodiments of the present invention, and FIG. 2 is a sectional view of FIG. 1.

1 and 2, the surface contact type solenoid valve 100 according to some embodiments of the present invention includes a valve body 110, a solenoid drive module 120, a sheet member 130, and a plunger (not shown) Plunger 340 and may be used to open and close the flow of liquid water, such as condensate, cooling water or purified water, and may be used to open and close the flow of various gases without being limited thereto.

The valve body 110 may have an inlet flow path 112 and an outlet flow path 113 at the side and bottom of the working space 111, respectively. The valve body 110 can be detachably fixed to the base plate 114 by a fastening member 116 such as a plurality of bolts or screws so that the base plate 114 can be opened, O-rings 115 may be interposed. Here, the base plate 114 may have a sheet member 130 mounted thereon.

The solenoid drive module 120 is provided on the valve body 110 and may be coupled to the upper portion of the valve body 110 and may have a solenoid 121 and an elastic member 122. The solenoid drive module 120 may have a cylinder 124 in which a plunger 140 is installed to guide the movement of the plunger 140 and the plunger 140 is moved within the cylinder 124 by electromagnetic force A solenoid 121 may be installed around the cylinder 124 and an elastic member 122 may be installed at the upper end of the plunger 140 to apply elastic force to return the plunger 140 downward. On the other hand, the solenoid driving module 120 can be controlled to open or close the flow of the fluid by the control unit which receives the sensing signal of the sensor or the like.

The elastic member 122 may be formed of a coil compression spring, for example, and various spring members including a coil tension spring may be used depending on the installation position, the fixing structure, and the like.

The cylinder 124 may be provided with a guide projection (not shown) on its inner surface so as to be slidably engaged with the guide groove 143 formed along the longitudinal direction of the plunger 140, for example.

The solenoid driving module 120 may include a threaded engaging portion 123 screwed on an upper portion of the operating space 111 at a lower end thereof and an O- (127) can be interposed. The solenoid drive module 120 may be fixed to the upper end of the cylinder 124 with a nut 126, for example, a casing 125 surrounding the solenoid 121.

The sheet member 130 may be formed on the bottom surface of the operation space 111 and may be made of an elastic material and may have an outflow hole 131 connected to the outflow channel 113. The sheet member 130 may be in the form of a plate providing an area for seating the mesh socket 150 to be described later, and may be made of fluorine rubber, for example. However, And may be made of natural rubber or artificial rubber of various materials, or synthetic resin having elasticity. Thus, the sheet member 130 is made of a material having elasticity, thereby enhancing the adhesion of the sheet member 130 to the surface contact portion 141 provided at the end of the plunger 140, which will be described later, to prevent leakage of the fluid as much as possible.

The plunger 140 may be installed to be reciprocatable to open and close the outlet hole 131 in the working space 111 by the solenoid 121 and the elastic member 122. For example, So that it can move upward by the electromagnetic force with the solenoid 121 to open the outflow hole 131. In addition, The plunger 140 may be provided with a surface contact portion 141 that is in surface contact with the sheet member 130 for blocking the outflow hole 131. Here, the surface contact portion 141 may be formed integrally with the lower end of the plunger 140 as in the present embodiment, but may be formed separately from the plunger 140 and coupled to the lower end of the plunger 140.

FIG. 3 is a cross-sectional view showing a substantial part of a surface contact type solenoid valve according to some embodiments of the present invention, FIG. 4 is a cross-sectional view and a bottom view of the plunger of FIG. 3, Fig. 3 is a perspective view showing a mesh member. Fig.

3 and 4, the plunger 140 is formed such that the surface contact portion 141 is formed in the shape of a ring-like projection at the end so as to be in surface contact with the periphery of the outflow hole 131 in the sheet member 130 do. For this, a groove 142 may be formed at the center of the surface contact portion 141.

As shown in FIGS. 3 and 5, the solenoid valve 100 may be provided with a mesh socket 150 and a mesh member 160.

The mesh socket 150 may be disposed around the plunger 140 and spaced from the inner surface of the working space 111, and at least one inlet 151 may be formed. Therefore, the mesh socket 150 allows the fluid introduced from the inflow channel 112 to be discharged through the operation space 111 and the outflow channel 113. The mesh socket 150 may have a single inlet 151 or may be formed in multiple, e.g., three, peripheries as in the present embodiment and supported by the threaded portion 123 of the solenoid drive module 120 A support flange 152 that is pressed downward by the threaded engagement portion 123 can be formed at the upper end so as to be stably fixed at a predetermined position.

The mesh member 160 may have a cylindrical shape and may have a mesh structure for filtering foreign matter from the passing fluid and may be mounted on the outer surface of the mesh socket 150.

6 is a cross-sectional view and a bottom view illustrating another example of a plunger in a surface-contact type solenoid valve according to some embodiments of the present invention.

6, the plunger 240 according to another example has the surface contact portion 241 formed in the shape of a ring-shaped protrusion so that the outflow hole 131 (see Fig. 3 , And the surface contact portion 241 may be formed in a plurality of concentric circles at the ends. Therefore, each of the surface contact portions 241 is concentrically connected to the sheet member 130 (shown in FIG. 3), so that the fluid can be blocked from flowing out between the surface contact portion 241 and the sheet member 130.

7 is a cross-sectional view and a bottom view illustrating another example of a flange in a solenoid valve of a surface-contact type solenoid valve according to some embodiments of the present invention.

7, the plunger 340 according to another example includes a line contact portion 341 which is formed in the shape of a ring-shaped projection and which is in line contact with the sheet member 130 (shown in Fig. 3) 342 may be formed concentrically with the surface contact portion 341 at the ends thereof. Therefore, the line contact portion 342 and the surface contact portion 341 can block the flow of fluid between the sheet member 130 (shown in FIG. 3) and the line contact portion 342 The area of the plunger 340 end required for the implementation of the multiple contact structure can be reduced. Here, the line contact portion 342 is formed so as to protrude in a ring shape at the end of the plunger 340 and may have a reverse triangular shape in cross section as in the present embodiment for line contact with the sheet member 130 .

The operation of the surface contact type solenoid valve according to the present invention will now be described.

As shown in FIGS. 2 and 3, the surface contact type solenoid valve 100 according to the present invention simplifies the structure of the solenoid valve 100 so as to reduce the weight of the solenoid valve. In addition, when the fluid is discharged from the valve body 110, the flow path thereof minimizes the resistance to the flow of the fluid, thereby enabling smooth discharge of the fluid. That is, the valve body 110 providing the flow path of the fluid has a structure in which the inflow channel 112 and the outflow channel 113 are formed at the side and bottom of the operation space 111, respectively, So that the fluid can flow smoothly without accumulating inside.

In addition, when the flow of the fluid is blocked, leakage of the fluid can be prevented by the surface contact between the plunger 140 and the resilient sheet member 130, and the leakage of foreign matter The mesh member 160 can be easily assembled by the mesh socket 150 and the mesh member 160 can be stably installed.

The surface contact portion 341 and the line contact portion 342 are formed in the plunger 240 so as to be concentric with the surface contact portion 241 in the plunger 240 as shown in Fig. Are formed in multiple concentric circles so that leakage of the fluid through the space between the plunger and the sheet member can be blocked.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: solenoid valve 110: valve body
111: working space 112: inflow channel
113: Outflow channel 114: Base plate
115: o-ring 116: fastening member
120: Solenoid drive module 121: Solenoid
122: elastic member 123:
124: cylinder 125: casing
126: Nut 127: O-ring
130: sheet member 131: outlet hole
140, 240, 340: Plunger 141, 241, 341:
142: groove 150: mesh socket
151: inlet port 152: support flange
160: mesh member 342:

Claims (1)

A valve body in which an inflow passage and an outflow passage are formed at the side and bottom of the operating space, respectively;
A solenoid driving module provided in the valve body, the solenoid driving module having a solenoid and an elastic member;
A sheet member provided on a bottom surface of the operation space and formed of an elastic material and having an outflow hole connected to the outflow passage; And
A plunger installed to be reciprocatable to open and close the outlet hole in the working space by the solenoid and the elastic member, the plunger being provided with a surface contact portion that is in surface contact with the sheet member;
And a contact-type solenoid valve.

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