KR20200039151A - Two way solenoid valve - Google Patents

Abstract

The present invention relates to a two-way electronic valve and, more specifically, to a two-way electronic valve which has a simple structure to be easily manufactured. The two-way electronic valve (1000) of the present invention comprises: a body (1100); a main valve body (1200); a main pressurizing member (1300) installed on an upper part of the main valve body; a flow path communication member (1400) having a first connection path (1410) and a second connection path (1440); a sub valve body (1500); and a lid member (1700).

Description

2-way solenoid valve {TWO WAY SOLENOID VALVE}

The present invention relates to a two-way solenoid valve, and more particularly, to a two-way solenoid valve having a simple structure to be easy to manufacture as well as compact in height while using a large-diameter main valve body.

Generally, the solenoid valve flows fluid or blocks the flow of fluid by opening and closing the valve body provided in the fluid passage with electromagnetic force, and the valve body has a size according to the size of the fluid passage, and the valve body becomes larger when the diameter of the fluid passage increases. As the valve body becomes larger, a large electromagnetic force is required to drive the valve body, and the solenoid is enlarged to increase the height of the solenoid valve.

For this reason, it is performed by using a pressure of the fluid and moving the piston to make the piston drive the valve body, to make a pilot solenoid valve equipped with a pilot valve to control the fluid flow rate introduced into the piston with electromagnetic force, and to miniaturize the solenoid. have. However, as the diameter of the main valve increases, the piston driving the main valve increases, and the pilot passage increases.

Therefore, when the diameter of the fluid passage increases or the pressure of the fluid increases, the pilot valve for controlling the large pilot passage also increases, which also requires a large electromagnetic force. On the other hand, a two-stage pilot type two-way solenoid valve is known in which a pilot valve has a two-stage configuration to reduce the electromagnetic force for driving the pilot valve and to reduce the size.

However, since the two-stage pilot type solenoid valve is provided with two pilot valves, there is a problem in that the opening becomes large and the pilot passage becomes complicated, so that it becomes large.

In view of this problem, the Japanese Patent No. 3957956 is known, so that the first pilot valve body is arranged to contact the first pilot valve seat integrally formed on the male valve body, and the second pilot fixed to the plunger thereon. The valve body is arranged, the main valve body is integrated with the inner sleeve guided by the outer sleeve, the plunger is disposed in the inner sleeve, the movable core is fixed at the top, and the spring exerts a force on the plunger. The second pilot valve body is configured to be in a valve closed state.

Accordingly, since the pilot passages from the back pressure chamber of the main valve and the back pressure chamber of the first pilot valve to the outlet hole on the low pressure side are formed on the main valve body and the first pilot valve body on the same axis, the pilot passage is shortened, and overall It can be miniaturized and the cost of parts can be reduced by simplifying the structure.

However, since the movable core moves back and forth together with the male valve body, the solenoid is configured longer than usual, so the height of the solenoid valve cannot be lowered, and the configuration is complicated because it is composed of a double sleeve composed of an outer sleeve and an inner sleeve. .

In addition, since Japanese Patent Publication No. 2015-224649 is known, the first valve body, which is superimposed so as to be slidable in the first valve chamber, is a pilot that is opened and closed by the valve shaft and the valve shaft provided in the second valve body. It is structured so as to be movable in a direction different from the lifting direction of the valve body.

Therefore, the first valve body is inserted into the inlet chamber to be movable (slide) in a direction different from the lifting direction of the valve shaft and the pilot valve body, so that the first valve body that opens and closes the large-diameter first valve body is a pilot valve body. Since it is possible to move in a direction different from the movement direction of the valve shaft and the pilot valve body that opens and closes the pilot hole and the second valve port of the second pilot passage, the size of the entire solenoid valve can be downsized and the The mountability can be significantly improved.

In addition, since the first valve body is free to move in a direction orthogonal to the elevating direction of the valve shaft and the pilot valve body, the first valve body that opens and closes the large-diameter first valve body can be reliably and quickly driven. have.

However, when the diameter of the pilot valve body is increased, there is a problem in that the length in the height direction of the two-way solenoid valve is increased by that amount.

References: Japanese Patent No. 3957956 title of invention "2-stage pilot type solenoid valve" and Japanese Patent Publication No. 2015-224649 invention title "2-stage pilot type solenoid valve".

The present invention has been devised to solve all the above-mentioned requirements, and its purpose is to provide a two-way solenoid valve having a compact structure as well as a compact height while using a main valve body having a large diameter. There is this.

An object of the present invention is to provide a two-way solenoid valve that is simple and easy to manufacture because it comprises a first connection passage and a second connection passage in one flow path communication member.

The present invention provides a two-way solenoid valve that simplifies manufacturing because the second connection passage communicates through the groove at any position in the circumferential direction of the flow path connecting member when the floating body passage and the body are installed in the same axial direction. There is a purpose.

The two-way solenoid valve according to the present invention for achieving the above object has a main fluid passage formed therein and a main valve seat formed in the main fluid passage so that the inlet and outlet and the inlet and outlet communicate with each other and open to the top. The main valve body, which is installed in the main fluid passage of the body and the main valve seat to be opened and closed on the upstream side, and the main valve body is installed on the main valve body to close the main valve seat. The main pressurizing member for pressurization, the main backing chamber provided on the side where the main pressurizing member, which is the main fluid passage of the body and the main valve body, is installed, and a main small hole penetrating the main valve body through the main backing chamber. 1 valve unit; The first connecting passage formed parallel to the axial direction of the main valve body to be communicated with the outlet from the main back pressure chamber, and formed on the upper part, so as to be perpendicular to the axial direction with the lower side of the main valve seat and the lower side of the lower toilet seat. A second connection passage is formed, and a flow path communication member provided to be inserted into the main fluid passage from the upper part of the body, a sub-valve body having a central hole through the center of the shaft while opening and closing the sub-seat, and a sub-valve body An additional pressure member for pressing in the opening direction of the toilet seat, a lid member installed to seal and seal the upper main fluid passage of the body, and a lid member installed to open and close the sub toilet seat while the sub-valve body moves up and down, and the lid member It is installed in the center of the solenoid that operates while opening and closing the central hole of the sub-valve body, and the lid member and the sub-valve body Section back pressure chamber provided between the end face, said main-part so as to communicate the back pressure chamber side and the secondary side doedoe back pressure chamber provided in the valve body portion has a second valve portion formed with a through hole; and a.

Here, the flow path communication member, the sub toilet seat is made of an annular projection, the first connection passage communicating the main back pressure chamber and the sub back pressure chamber, and the main fluid passage toward the outlet through the sub toilet seat in the sub back pressure chamber The second connection passage is formed so as to communicate perpendicularly with the axial direction to the inner lower part of the sub-seat to communicate, and the second connection passage is connected to the floating fluid passage formed parallel to the main fluid passage formed at the center of the body. It is characterized in that the passage has an L-shaped cross section.

In addition, the second connection passage is characterized in that it is in communication with the central axis toward the circular sub-seat groove formed on the central axis of the sub-seat from the groove formed on the circumferential surface of the flow path communication member fitted to the main fluid passage of the body. .

As described above, according to the two-way solenoid valve according to the present invention, a double sleeve and a movable iron core are not used, and although the shape in the vertical direction is miniaturized, the diameter of the main valve side does not increase in the height direction, and of course, the structure is simple. Thereby, there is an effect of facilitating manufacturing.

According to the two-way solenoid valve according to the present invention, since the first connection passage and the second connection passage are configured in one flow path communication member, the configuration is simple and easy to manufacture.

According to the two-way solenoid valve according to the present invention, when the floating body passage and the axial direction of the body are installed to be the same, the second connection passage communicates through the groove at any position in the circumferential direction of the flow path connecting member, thereby simplifying manufacturing. There is.

1 is a perspective view showing a two-way solenoid valve according to an embodiment of the present invention,
Figure 2 is a front view of Figure 1,
3 is a right side view of FIG. 1,
4 is a left side view of FIG. 1,
5 is a plan view of FIG. 1,
Figure 6 is a bottom view of Figure 1,
7 is an exploded perspective view showing the two-way solenoid valve of FIG. 1,
Figure 8 is a cross-sectional view taken along line A-A of Figure 5 showing the solenoid of the two-way solenoid valve of the present invention,
9 is a cross-sectional view taken along the line A-A in FIG. 5 showing a closed state of the solenoid of the two-way solenoid valve of the present invention.

Hereinafter, a two-way solenoid valve according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In adding the quotation marks to the components of the drawings, the same components have the same reference numerals as possible even though they are displayed on different drawings, and a known function determined to unnecessarily obscure the subject matter of the present invention And detailed description of the configuration is omitted. In addition, directional terms such as 'top', 'bottom', 'front', 'back', 'tip', 'front', 'end' and the like are used in connection with the orientation of the disclosed drawing (s). Since the components of the embodiments of the present invention can be positioned in various orientations, the directional terms are used for illustrative purposes and are not limiting.

The two-way solenoid valve 1000 according to the present invention, as shown in Figures 1 to 9, the body 1100 and the main valve body 1200, the main pressing member 1300, the main back pressure chamber and the main small hole A first valve unit having a; It consists of a flow path communication member (1400) and a sub-valve body (1500), an additional pressure member (1600), a lid member (1700), a solenoid (1800), a second valve part having a sub-pressure chamber and a small hole.

Here, the body 1100 is formed inside so that the fluid is introduced into one side, and the inlet 1110 through which the fluid is discharged to the other side, and the outlet 1120 through which the fluid is discharged, and the inlet and outlet communicate with each other and open to the upper surface. The main fluid passages 1131 and 1132, the main valve seat 1140 formed with a constant diameter toward the upper part from the main fluid passages, and the floating fluid passage communicating with the lower main fluid passage 1132 from the upper main fluid passage 1131 The furnace 1150 is formed to be spaced apart parallel to the axial direction of the upper main fluid passage 1131.

The main fluid passages 1131 and 1132 are composed of an upper main fluid passage 1131 located above the main valve seat 1140 and a lower main fluid passage 1132 located below the main valve seat 1140.

Therefore, when the main valve seat 1140 is opened, the fluid introduced into the inlet 1110 is discharged to the outlet 1120 via the lower main fluid passage 1132 through the upper main fluid passage 1131. It may be discharged directly from the upper part of the main fluid passage 1131 to the lower main fluid passage 1132 toward the outlet 1120.

In addition, the main valve body 1200 is fitted to the upper main fluid passage 1131 of the body 1100 and is assembled to open and close the main valve seat 1140 from the upstream side, and the upper main fluid passage The valve member having the main small hole 1212 penetrated downward from the pressing member receiving groove 1211 while being inserted into (1131) and moving in the axial direction and the pressing member receiving groove 1211 is formed on the upper surface. 1210, a sealing member 1220 seated under the valve member to seal the main valve seat 1140, and a stop ring 1230 assembled at the bottom of the valve member to fix the sealing member in the axial direction And, it is composed of a piston ring 1240 installed on the outer peripheral surface of the valve member 1210.

Therefore, the valve member 1210 of the main valve body 1200 moves up and down along the upper main fluid passage 1131 along with the piston ring 1240 according to the supply direction of the fluid, wherein the sealing member 1220 When the is in close contact with the main valve seat 1140, the fluid flowing into the inlet 1110 cannot be moved to the lower main fluid passage 1132 through the upper main fluid passage 1131. At this time, the fluid flowing into the inlet 1110 flows into the main small hole 1212 of the valve member 1210 through the upper main fluid passage 1131 and is supplied toward the pressing member receiving groove 1211.

In addition, the upper main fluid passage 1131 formed between the pressing member receiving groove 1211 and the lid member 1700 constitutes a main back pressure chamber (P1). In addition, the main valve body 1120 is provided with a gap with the main valve body on the sliding surface of the main valve body, it is of course possible to replace the main small hole 1212.

The non-explanatory reference numeral 1213 is a stopper installed at equal intervals on the upper surface of the valve member 1210, and the upper surface of the valve member 1210 and the lower surface of the flow path communication member 1400 are in close contact to form a vacuum, so that the main pressing member 1300 ) Is to prevent the operation.

In addition, the main pressing member 1300, the lower portion is seated in the pressing member receiving groove 1211 of the valve member 1210, the upper portion is supported by the lid member 1700.

Therefore, the main valve body 1200 is pressed in the direction of sealing the main valve seat 1140 by the sealing member 1220 installed at the lower end of the valve member 1210 by the main pressing member 1300.

On the other hand, the flow path communication member 1400 is seated in a state fitted in the upper main fluid passage 1131 from the top of the body 1100 to seal the upper main fluid passage 1131, the main back pressure chamber (P1) The first connection passage 1410 formed through the parallel to the axial direction of the main valve body 1200 so as to communicate with the outlet 1120, and a sub-seat 1420 formed in the upper portion and having a smaller diameter than the main valve seat 1140 And a second connection passage 1440 is formed to communicate vertically with the axial direction of the sub toilet seat 1430 formed as a lower portion of the sub toilet seat.

In addition, the sub-seat 1420 of the flow path communication member 1400 is composed of an annular protrusion 1421, and the first connection passage 1410 communicates with the main back pressure chamber P1 and the sub back pressure chamber P2. , The second connection so as to be in vertical communication with the sub-seat groove (1430) formed centrally to communicate with the lower main fluid passage (1132) toward the outlet (1120) through the sub-seat (1420) in the sub-pressure chamber (P2) A passage 1440 is formed so that the second connection passage 1440 is connected to the floating body passage 1150 formed parallel to the upper main fluid passage 1131 formed at the center of the axis of the body 1100. It consists of a cross-section L-shape.

In addition, an o-ring 1450 for sealing is installed on an outer circumferential surface of the flow channel communication member 1400, and a main pressure is applied to a lower surface of the flow channel communication member 1400 to accommodate the upper surface of the main pressure member 1300. A member receiving groove 1460 is formed, and an additional pressure member receiving groove 1470 is formed on an upper surface of the flow path communication member 1400 to accommodate a lower surface of the additional pressure member 1600.

Therefore, when the fluid flows from the main back pressure chamber (P1), the fluid is supplied to the upper side of the sub- toilet seat (1420) through the first connection passage (1410), at this time, the sub- toilet seat (1420) and the sub toilet seat (1430) and When the second connection passage 1440 is opened, the fluid supplied through the first connection passage 1410 is a sub toilet seat 1420 and a sub toilet seat 1430 and a second connection passage 1440 and a floating body passage 1150 ) Through the lower main fluid passage (1132) and discharged to the outlet (1120).

In addition, the sub-valve body 1500, as shown in Figures 7 to 9, the lower surface is supported by an additional pressure member 1600 seated on the upper surface of the flow path communication member 1400 is supported in the upper direction It is pressurized and assembled to be movable from the center of the lid member 1700 to a certain height, and in the direction opposite to the additional pressure member 1600 by the operation of the solenoid 1800, the sub-seat 1420 A fluid flowing into the first connection passage 1410 of the flow path communication member 1400 parallel to the center hole at a position adjacent to the center hole and the center hole 1510 penetrating the center of the shaft together with opening and closing the A small hole 1520 is formed to continuously and minutely flow into the upper surface of the sub-valve body 1500.

In addition, between the lid member 1700 and the upper surface of the sub-valve body 1500 so that the fluid flowing into the small hole 1520 always flows into the upper surface of the sub-valve body 1500, the sub-pressure chamber P2 Is provided.

Therefore, when the solenoid 1800 is operated, the pilot rod of the solenoid blocks the center hole 1510 of the sub-valve body 1500 with little force, and thus the upper side of the sub-seat 1420 through the first connecting passage 1410. When the fluid is supplied to the, through the small hole (1520) flows into the sub-back pressure chamber (P2), the pilot rod of the solenoid (1800), the central hole (1510) of the sub-valve body (1500) 8 When opened, the sub-valve body 1500 in the sub-seat 1420 moves upward by the additional pressure member 1600 while the sub-seat groove 1430 and the second connection passage 1440 are opened. The fluid supplied through the 1 connection passage 1410 is discharged to the outlet 1120 through the sub toilet seat 1420, the sub toilet seat 1430, and the second connection passage 1440 to be in a low pressure state.

At this time, since the high pressure fluid introduced into the inlet 1110 enters the main small hole 1212 into the main pressurization chamber P1, the pressing force for lifting the main valve body 1200 upwards becomes larger. Since the sealing member 1220 of 1200) is opened away from the main valve seat 1140, the high-pressure fluid introduced into the inlet 1110 is discharged through the upper main fluid passage 1131 and the lower main fluid passage 1132. It is discharged to (1120).

In addition, a gap with the sub-valve body is provided in the sub-valve body accommodating groove 1710, which is the sub-valve body sliding surface in which the sub-valve body 1500 slides, in a direction parallel to the axial direction to replace the small hole Yes, of course.

In addition, when the solenoid 1800 operates and the pilot rod closes the center hole 1510 of the sub-valve body 1500 as shown in FIG. 9 to block the sub-seat 1420, the upper main fluid passage 1131 And the main small hole 1212, the main back pressure chamber (P1), the first connection passage 1410, the small hole 1520 and the sub back pressure chamber (P2) gradually become high pressure, and the high pressure force and the main pressure member By 1300, the sealing member 1220 of the main valve body 1200 is pressed toward the main valve seat 1140 so that the main valve seat 1200 seals the main valve seat 1140.

On the other hand, the sub-valve body 1500, as shown in Figures 7 to 9, the lower surface is supported by the additional pressure member 1600 seated on the upper surface of the flow path communication member 1400 and the center As the pilot valve seat, which will be described later, is fitted, a pilot valve body in which an escape hole communicating with a small hole is formed, and fitted into the lower center of the pilot valve body to be cured and fixed, and a central hole 1510 And the pilot hole seat 1520 is formed, but the pilot valve body and the pilot valve seat may be integrally formed.

In addition, the lid member 1700, as shown in FIGS. 7 to 9, is installed to seal and seal the upper main fluid passage 1131 of the body 1100, and accommodates the sub-valve body 1500 A secondary valve body receiving groove 1710 is formed on the lower surface so that an additional pressure member receiving groove 1720 is formed on the lower surface of the secondary valve body receiving groove 1710 to facilitate installation of the additional pressure member 1600. In addition, the hole 1730 is formed so that the pilot rod 1810 of the solenoid 1800 of the sub-valve body receiving groove 1710 can move up and down as well as the sub-back pressure chamber P2 is formed.

Therefore, the sub-valve body 1500 is accommodated in the sub-valve body accommodating groove 1710 of the lid member 1700 and moves up and down, and the additional pressure member 1600 is moved by the additional pressure member accommodating groove 1720. It is easy to install, and the negative pressure chamber P2 is formed by a hole 1730 formed in the upper portion of the sub-valve body receiving groove 1710, and the pilot rod 1810 of the solenoid 1800 can move up and down. It will provide a space.

Meanwhile, the solenoid 1800 is fixed to the upper surface of the lid member 1700 and is installed to selectively open and close the central hole 1510 while the electric rod 1810 moves up and down in response to an electrical signal.

The pilot rod 1810 is formed with a groove penetrated therein to receive the pressure of the sub-back pressure chamber P2 at the end, so that the pilot rod 1810 advances with a small force of the solenoid 1800 to advance the center hole 1510. It is easy to press the sub-valve body 1500 while blocking.

The embodiments described above and illustrated in the drawings should not be interpreted as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and a person having ordinary knowledge in the technical field of the present invention can improve and modify the technical spirit of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention if it is apparent to those skilled in the art.

1000: 2-way solenoid valve 1100: Body
1200: main valve body 1300: main pressing member
1400: flow path communication member 1500: sub-valve body
1600: Additional pressure member 1700: Lid member
1800: Solenoid

Claims (3)

The main fluid passage (1131, 1132) formed inside to open to the upper surface with the inlet (1110) through which fluid flows to one side and the outlet (1120) through which the fluid is discharged to the other side, and the inlet and outlet communicate with each other Wow, the main valve seat 1140 formed with a constant diameter toward the upper portion from the main fluid passage, and the floating main passage 1150 communicating from the upper main fluid passage 1131 to the lower main fluid passage 1132 are the upper main. The body 1100 is formed spaced parallel to the axial direction of the fluid passage 1131,
In addition to being fitted into the upper main fluid passage 1131 of the body 1100, the main valve seat 1140 is assembled to be opened and closed from the upstream side, but is inserted into the upper main fluid passage 1131 and moved in the axial direction. In addition, a main valve body 1200 having a main small hole 1212 penetrating downward from the pressing member receiving groove 1211 is formed while the pressing member receiving groove 1211 is formed on the upper surface.
A main pressing member 1300 installed above the main valve body to press the main valve body in a direction to close the main valve seat,
The first connection passage 1410 formed parallel to the axial direction of the main valve body to communicate with the outlet from the main back pressure chamber (P1) provided in the upper main fluid passage 1131 formed on the upper portion of the main valve body 1200 In addition to being formed on the upper side, the main valve seat 1140 has a smaller diameter than the main toilet seat 1420 and a second connecting passage 1440 is formed to communicate vertically with the axial direction below the sub toilet seat, so that the upper main fluid passage is formed from the top of the body. The flow path communication member 1400 provided by being fitted with (1131),
The lower surface is supported by the additional pressure member 1600 seated on the upper surface of the flow path communication member 1400 and is pressed upward, so as to be assembled to be movable from the center of the lid member 1700 to a certain height. , By moving the solenoid 1800 in the direction opposite to the additional pressure member 1600 to open and close the sub-seat 1420 and the central hole 1510 penetrated through the center of the shaft, and neighboring the central hole A sub-valve body having a small hole 1520 formed in such a manner that the fluid flowing into the first connection passage 1410 of the flow path communication member 1400 in a parallel position with the central hole continuously and minutely flows into the upper surface ( 1500),
In addition to being installed to hermetically seal the upper main fluid passage 1131 of the body 1100, a sub-valve body receiving groove 1710 is formed on the lower surface to accommodate the sub-valve body 1500, and the sub-valve body A pilot member 1810 of the solenoid 1800 can be moved up and down on the upper portion of the receiving groove 1710, as well as a lid member 1700 having a hole 1730 formed to form the sub-back pressure chamber P2. 2-way solenoid valve. According to claim 1,
The flow path communication member 1400,
The sub-seat 1420 is made of an annular protrusion 1421,
A first connection passage 1410 communicating with the main back pressure chamber P1 and the sub back pressure chamber P2,
A second connecting passage (1440) to communicate with the sub-seat groove (1430) formed centrally to communicate with the lower main fluid passage (1132) toward the outlet (1120) through the sub-seat (1420) in the sub-back pressure chamber (P2). ) Is formed so that the second connecting passage 1440 is connected to the floating main passage 1150 formed parallel to the upper main fluid passage 1131 formed at the axis center of the body 1100, and the cross-section L-shaped A two-way solenoid valve, characterized in that it consists of a shape. According to claim 2,
The second connection passage 1440,
Vertically on the circumferential surface of the flow path communication member 1400 fitted in the upper main fluid passage 1131 of the body 1100 toward the sub-seat groove 1430 formed at a certain depth on the central axis of the sub-seat 1420 Two-way solenoid valve, characterized in that the communication.

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