On / off valve

Abstract

The invention discloses an on / off valve, comprising: a valve body defining a passage through which a fluid flows in a first direction; a solenoid coil mounted on the valve body in a first direction to surround the passage on an outer side of the passage; and a valve disc including a magnetic body and rotating on the passage to open and close the passage with the solenoid coil.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority of Korean Patent Application No. 10-2023-0142287 filed on October 23, 2023, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The invention relates to an on / off valve. Background Art

[0004] An on / off valve may be a device that regulates the flow of a fluid by opening and closing a passage for the flow of the fluid. The on / off valve may be classified into a butterfly valve that regulates the flow of a fluid by mounting a rotating shaft of a disc-shaped valve disc to rotate the shaft, and a solenoid valve that opens or closes using magnetic force while winding a wire into a spiral shape to allow current to flow.

[0005] The butterfly valve may be operated in an electric form, in which case, since a motor and a reducer must be provided, the manufacturing cost may increase. In addition, it may be difficult to manufacture a solenoid valve having a relatively large diameter passage. Summary of the invention

[0006] The embodiment provides an on / off valve which can be provided with a passage of a larger diameter. The manufacturing cost can be relatively low. In addition, the advantages achieved by the prior art can remain unchanged.

[0007] One aspect of the present invention provides an on / off valve that can rotate a valve disk by using a solenoid coil.

[0008] The embodiments are not limited to solving the above-mentioned problems, and other modifications and advantages not mentioned herein will be clearly understood by those skilled in the art to which the present invention pertains from the following description.

[0009] According to one aspect of the present invention, an on / off valve may include: a valve body defining a channel through which a fluid can flow in a first direction; a solenoid coil that can be mounted on the valve body along the first direction to surround the channel on the outside of the channel; and a valve disc that includes a magnetic body and can rotate within the channel to open and close the channel using the solenoid coil.

[0010] The valve disc can rotate around a rotation axis extending in a second direction perpendicular to the first direction, and the valve disc can rotate between a closed position and an open position, wherein the on / off valve can be configured so that when the valve disc is in the closed position, the flow of fluid flowing through the channel can be blocked, and when the valve disc is in the open position, the flow of fluid flowing through the channel can be allowed.

[0011] The direction in which the valve disc rotates from the open position to the closed position may be defined as a first rotation direction. The inner circumference of the valve body may define a channel, and the valve body may include a guide rib protruding from the inner circumference of the valve body to prevent the valve disc from rotating in the first rotation direction from the closed position.

[0012] The valve disc may be divided into a first portion and a second portion by the rotation axis. When the valve disc rotates from a closed position to an open position, the first portion may move to an upstream side of the passage, the second portion may move to a downstream side of the passage, and a guide rib may protrude from an inner circumferential surface of the valve body to support a surface of the first portion.

[0013] The valve disc may be divided into a first portion and a second portion by the rotation axis. When the valve disc rotates from a closed position to an open position, the first portion may move to an upstream side of the passage, the second portion may move to a downstream side of the passage, and a guide rib may protrude from an inner circumferential surface of the valve body to support a surface of the second portion.

[0014] When viewed in the first direction, the guide rib may be disposed in a third direction perpendicular to the second direction or in a direction opposite to the third direction from an imaginary reference line passing through the rotation axis in the second direction.

[0015] When viewed in the direction of the rotation axis, the valve disc can define a closed position when the valve disc is rotated by a specified angle in the direction from the closed position to the open position relative to an imaginary reference line passing through the rotation axis in a third direction perpendicular to the first direction.

[0016] The inner circumferential surface of the valve body may define a channel. The direction in which the valve disc rotates from the closed position to the open position may be defined as a second rotation direction. The valve body may include a stopper configured to protrude from the inner circumferential surface of the valve body to prevent the valve disc from rotating in the second rotation direction in the open position.

[0017] When viewed in the first direction, the stopper may be spaced apart from an imaginary center line passing through a center of the channel in the second direction in a direction perpendicular to the second direction.

[0018] The solenoid coil may apply current in opposite directions when moving the valve disc from the closed position to the open position and when moving the valve disc from the open position to the closed position.

[0019] The on / off valve may further include a torsion spring configured to provide an elastic force to rotate the valve disc from the open position to the closed position or to rotate the valve disc from the closed position to the open position.

[0020] According to one aspect of the present invention, an on / off valve may include: a valve body defining a channel through which a fluid can flow in a first direction; and a valve disc disposed at a position within the channel and including a magnetic body, the valve disc being rotatable between a closed position and an open position about a rotation axis, wherein the rotation axis extends in a second direction perpendicular to the first direction. The on / off valve may be configured such that when the valve disc is in the closed position, the flow of the fluid flowing through the channel is blocked, and when the valve disc is in the open position, the flow of the fluid flowing through the channel is allowed. The on / off valve may include a solenoid coil mounted outside the channel to surround a position within the channel where the valve disc is disposed.

[0021] The surface of the valve disc facing the downstream side of the passage in the closed position may include a magnetic body of a first magnetic pole, and the surface of the valve disc facing the upstream side of the passage in the closed position may include a magnetic body of a second magnetic pole opposite to the first magnetic pole.

[0022] When viewed in the direction of the rotation axis, the rotation axis may be spaced apart from an imaginary reference line in a first direction or a direction opposite to the first direction, the imaginary reference line extending in a direction perpendicular to the first direction and being arranged at the same distance from a surface facing the first direction on the downstream side of the channel in the closed position and a surface facing the direction opposite to the first direction on the upstream side of the channel in the closed position.

[0023] The on / off valve may further include a valve seat member configured to seat the valve disc between an inner peripheral surface of the valve body defining the passage and a closed position.

[0024] The valve seat component may include a valve seat surface, which is configured to be inclined toward the inner side of the channel relative to a first direction when viewed in the direction of the rotation axis to prevent the valve disc in the closed position from rotating in the first rotation direction from the open position to the closed position, and the valve disc may include a contact surface formed to correspond to the valve seat surface to contact the valve seat surface in the closed position.

[0025] According to one aspect of the present invention, an on / off valve may include: a valve body defining a channel through which a fluid can flow in a first direction; a solenoid coil mounted on the valve body in the first direction to surround the channel on the outside of the channel; and a valve disc located in the channel. The valve disc may rotate around a rotation axis extending in a second direction perpendicular to the first direction, wherein the valve disc may rotate between a closed position and an open position. The on / off valve may be configured such that when the valve disc is in the closed position, the flow of the fluid flowing through the channel is blocked, and when the valve disc is in the open position, the flow of the fluid flowing through the channel is allowed. The valve disc includes a first portion and a second portion divided by the rotation axis, wherein when the valve disc rotates from the closed position to the open position, the first portion may move to the downstream side of the channel, wherein the second portion may move to the upstream side of the channel. The first portion may include a magnetic body of a first magnetic pole, and the second portion may include a magnetic body of a second magnetic pole opposite to the first magnetic pole.

[0026] The inner circumference of the valve body may define a channel. The direction in which the valve disc rotates from the closed position to the open position may be defined as a second rotation direction. The valve body may include a stopper protruding from the inner circumference of the valve body to prevent the valve disc from rotating in the second rotation direction from the open position.

[0027] The stopper may be disposed on an imaginary reference line passing through the rotation axis in the second direction when viewed in the first direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the present invention will become more apparent through the following detailed description in conjunction with the accompanying drawings:

[0029] Figure 1 is a perspective view of an on / off valve according to one embodiment of the present invention;

[0030] Figure 2 is a side cross-sectional view of an on / off valve when the valve disc is in a closed state according to one embodiment of the present invention;

[0031] Figure 3 is the direction of observation along the first Figure 2 an enlarged view of a cross section of line "A";

[0032] Figure 4 is the direction of observation along the first Figure 2 an enlarged view of a cross section of line "B";

[0033] Figure 5 is a cross-sectional view of an on / off valve observed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to one embodiment of the present invention;

[0034] Figure 6is a side sectional view of an on / off valve when the valve disc rotates in a second rotation direction in a closed state according to one embodiment of the present invention;

[0035] Figure 7 is a cross-sectional view of the on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc rotates in the second rotation direction in a closed state according to one embodiment of the present invention;

[0036] Figure 8 is a side cross-sectional view of an on / off valve when the valve disc rotates in a second rotation direction according to an embodiment of the present invention;

[0037] Fig. 9 is a cross-sectional view of the on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc rotates in the second rotation direction according to one embodiment of the present invention;

[0038] Fig.10 is a side cross-sectional view of an on / off valve according to one embodiment of the present invention when the valve disc is in an open state;

[0039] Fig.11 is the direction of observation along the first Fig.10 an enlarged view of a cross section of line "C";

[0040] Fig.12 is a cross-sectional view of an on / off valve observed in the direction of the rotation axis of the valve disc when the valve disc is in an open state according to one embodiment of the present invention;

[0041] Fig.13 is a side cross-sectional view of an on / off valve when a valve disc rotates in a first rotation direction in an open state according to an embodiment of the present invention;

[0042] Fig.14 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc rotates in a first rotation direction in an open state according to an embodiment of the present invention;

[0043] Fig.15 is a side cross-sectional view of an on / off valve when the valve disc rotates in a first rotation direction according to an embodiment of the present invention;

[0044] Fig.16 is a cross-sectional view of an on / off valve viewed in a rotation axis direction of the valve disc when the valve disc rotates in a first rotation direction according to an embodiment of the present invention;

[0045] Fig.17 is a side cross-sectional view of an on / off valve when the valve disc is in a closed state according to one embodiment of the present invention;

[0046] Fig.18is a cross-sectional view of an on / off valve observed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to one embodiment of the present invention;

[0047] Fig.19 is a schematic diagram of a valve disc in a closed state and an open state according to an embodiment of the present invention;

[0048] Fig. 20 is a schematic diagram of a torque for rotating a valve disc according to an embodiment of the present invention;

[0049] Fig.21 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention;

[0050] Fig. 22 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention;

[0051] Fig.23 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention;

[0052] Fig.24 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention;

[0053] Fig.25 is a side sectional view of an on / off valve when a valve disc is in a closed state according to another embodiment of the present invention;

[0054] Fig.26 is a side sectional view of an on / off valve when a valve disc is in a closed state according to another embodiment of the present invention;

[0055] Fig. 27 is a cross-sectional view of an on / off valve observed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to another embodiment of the present invention;

[0056] Fig.28 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in an open state according to another embodiment of the present invention; and

[0057] Fig.29 FIG. 4 is a schematic diagram of a torque for rotating a valve disk according to another embodiment of the present invention.

[0058] Description of Reference Numerals

[0059] 1. 401, 501: On / off valve

[0060] 10: Valve body

[0061] 11: Entrance

[0062] 12: Export

[0063] 13, 113, 213, 313, 413, 513: Channel

[0064] 14, 114, 214, 314, 414, 514: Inner circumference

[0065] 15, 515: Guide rib

[0066] 15a: First guide rib

[0067] 15b: Second guide rib

[0068] 16, 516: Stopper

[0069] 17: Valve seat component

[0070] 17a, 117a, 217a, 317a: first valve seat member

[0071] 17b, 117b, 217b, 317b: Second valve seat member

[0072] 20, 420, 520: Solenoid housing

[0073] 21, 421, 521: Solenoid coil

[0074] 30, 130, 230, 330, 430, 530: Valve disc

[0075] 30a: First surface

[0076] 30b: Second surface

[0077] 31, 131, 231, 331, 531: first magnetic pole

[0078] 32, 132, 232, 332, 532: Second magnetic pole

[0079] 33, 133, 233, 333, 533: Rotation axis

[0080] 34, 134, 234, 334, 534: Part I

[0081] 35, 135, 235, 335, 535: Part II

[0082] 317aa: Valve seat surface

[0083] 317ba: Support surface

[0084] 334a: Contact surface

[0085] 414a: First support portion

[0086] 414b: Second support portion

[0087] 450: Torsion spring. DETAILED DESCRIPTION

[0088] Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. When adding reference numerals to the components of each drawing, it should be noted that the same or equivalent components are represented by the same reference numerals even if they are shown on other drawings. In addition, when describing the embodiments of the present invention, detailed descriptions of well-known features or functions will be excluded so as not to make the subject matter of the present invention unclear unnecessarily.

[0089] When describing the components according to the embodiments of the present invention, terms such as first, second, "A", "B", "(a)", "(b)", etc. may be used. These terms are intended only to distinguish one component from another, and these terms do not limit the nature, order or sequence of the components. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. Those terms defined in commonly used dictionaries should be interpreted as having meanings equivalent to the contextual meanings in the relevant art, and should not be interpreted as having ideal or overly formal meanings unless explicitly defined as having such meanings in this application.

[0090] In the following, reference will be made to Figures 1 to 29 Embodiments of the present invention are described in detail.

[0091] Figure 1 is a perspective view of an on / off valve according to one embodiment of the present invention. Figure 2 is a side cross-sectional view of an on / off valve according to one embodiment of the present invention when the valve disc is in a closed state. Figure 3 is the direction of observation along the first Figure 2 An enlarged view of the cross section of line "A". Figure 4 is the direction of observation along the first Figure 2 An enlarged view of the cross section of line "B". Figure 5 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to an embodiment of the present invention.

[0092] Reference Figures 1 to 5 The on / off valve 1 may be understood as a valve that adjusts the flow rate of the fluid flowing through the channel 13 by rotating a valve disk 30 disposed on the channel 13 in the valve body 10 .

[0093] The on / off valve 1 may include: a valve body 10, which defines a channel 13 through which fluid flows in a first direction ("X" direction); a valve disc 30, which is configured to rotate on the channel 13 to open and close the channel 13; and a solenoid housing 20, which covers a solenoid coil 21 disposed on the outside of the channel 13 to rotate the valve disc 30.

[0094] The valve body 10 may include a passage 13 extending in a first direction (“X” direction) between an inlet 11 disposed on an upstream side of the passage 13 and an outlet 12 disposed on a downstream side of the passage 13 , and an inner circumferential surface 14 defining the passage 13 .

[0095] The solenoid housing 20 may protect a solenoid coil 21 mounted on the valve body 10 to surround the passage 13 extending in a first direction ("X" direction) from the outside of the passage 13. The solenoid housing 20 may be formed in a substantially hollow cylindrical shape.

[0096] The valve disc 30 may be disposed inside the solenoid coil 21 to open and close the passage 13 while being rotated by the solenoid coil 21. The valve disc 30 may rotate about a rotation axis 33 extending in a second direction (“Z” direction) perpendicular to the first direction (“X” direction) between a closed position CP that blocks the flow of the fluid flowing through the passage 13 and an open position OP that allows the flow of the fluid flowing through the passage 13. The valve disc 30 may rotate between the closed position CP and the open position OP (refer to FIG. 1 ) according to the direction of the current applied to the solenoid coil 21. Fig.12 ) to rotate between.

[0097] In order to have such a structure, the valve disc 30 may include a magnetic body to open and close the passage 13 so as to form a magnetic field with opposite polarities, and may have a cylindrical disc shape.

[0098] That is, the valve disc 30 is formed into a shape corresponding to the channel 13 and is configured to close the channel 13 in the closed position CP, and may include a first surface 30a facing the downstream side of the channel 13 in the closed position CP, and a second surface 30b as the opposite side of the first surface 30a facing the upstream side of the channel 13 in the closed position CP.

[0099] The first surface 30a may include a magnetic body of a first magnetic pole, and the second surface 30b may include a magnetic body of a second magnetic pole. The first surface 30a and the second surface 30b may be formed to have opposite magnetic poles.

[0100] like Figure 5As shown, when viewed in the direction of the rotation axis 33 in the closed position CP, the valve disc 30 is divided by the rotation axis 33 and may include a first magnetic pole portion 31 and a second magnetic pole portion 32, the first magnetic pole portion 31 including a first surface 30a arranged on the downstream side of the channel 13, and the second magnetic pole portion 32 including a second surface 30b arranged on the upstream side of the channel 13.

[0101] The rotation shaft 33 may be disposed between the first magnetic pole portion 31 and the second magnetic pole portion 32 so that the valve disk 30 is rotatably coupled to the inner circumferential surface of the valve body 10 .

[0102] The first magnetic pole portion 31 provided with a first magnetic pole (example: "N" pole) and the second magnetic pole portion 32 provided with a second magnetic pole opposite to the first magnetic pole (example: "S" pole) may face opposite directions. Here, the first magnetic pole and the second magnetic pole may be one of the "N" pole and the "S" pole, respectively.

[0103] When the first magnetic pole portion 31 is the “N” pole and the second magnetic pole portion 32 is the “S” pole, the position of the valve disc 30 may be fixed at the closing position CP and may rotate toward the opening position OP according to the direction of the current flowing into the solenoid coil 21 .

[0104] The first magnetic pole portion 31 of the valve disc 30 may be provided with a first magnetic pole, and the second magnetic pole portion 32 may be provided with a second magnetic pole. The first magnetic pole portion 31 may be provided to face the second magnetic pole opposite to the first magnetic pole, and the second magnetic pole portion 32 may be provided to face the first magnetic pole opposite to the second magnetic pole, by the magnetic field generated by the solenoid coil 21. The rotation of the valve disc 30 described later may be the rotation caused by the magnetic force generated by the solenoid coil 21.

[0105] Regarding the rotation of the valve disc 30, the direction in which the valve disc 30 rotates from the open position OP to the closed position CP may be a first rotation direction R1 which is clockwise when viewed in the direction of the rotation axis 33 (see Fig.14 ), and the direction of rotation from the closed position CP to the open position OP may be a second rotation direction R2 which is a counterclockwise direction (see Figure 7 ).

[0106] Hereinafter, for convenience, the first magnetic pole of the first magnetic pole portion 31 may be understood as an “N” pole, and the second magnetic pole of the second magnetic pole portion 32 may be understood as an “S” pole.

[0107] When the solenoid coil 21 is observed in a first direction ("X" direction), if the direction of the current flowing through the solenoid coil 21 is counterclockwise, a magnetic field of a first magnetic pole (example: "N" pole) is induced in the portion of the solenoid coil 21 close to the inlet 11 side, and a magnetic field of a second magnetic pole (example: "S" pole) can be induced in the portion of the solenoid coil 21 close to the outlet 12 side.

[0108] At this time, the direction of the magnetic field formed by the solenoid coil 21 is in the direction of coming out from the "N" pole of the inlet 11 side portion outside the solenoid coil 21 and entering the "S" pole of the outlet 12 side portion, and the direction of the magnetic field inside the solenoid coil may be opposite to the first direction ("X" direction) facing the inlet 11 from the outlet 12.

[0109] In this case, the direction of the magnetic field formed by the solenoid coil 21 inside the solenoid coil 21 is opposite to the first direction ("X" direction), and the magnetic field formed by the valve disc 30 can be formed in a direction coming out of the first magnetic pole portion 31 of the valve disc and entering the second magnetic pole portion 32.

[0110] At this time, the direction of the magnetic field formed by the valve disc 30 and the direction of the magnetic field formed by the solenoid coil 21 may interfere with each other, whereby the valve disc 30 may rotate from an area where the magnetic field is dense to an area where the magnetic field is sparse. Even if the direction of the magnetic field formed by the valve disc 30 and the direction of the magnetic field formed by the solenoid coil 21 interfere with each other, when the magnetic field does not have a dense or sparse area or is symmetrical, the valve disc 30 does not rotate.

[0111] According to this principle, when the valve disc 30 is observed in the direction of the rotation axis 33, when the first surface 30a and the second surface 30b are facing the first direction ("X" direction) or the direction opposite to the first direction (-X direction), respectively, the valve disc 30 may not be rotated by the magnetic force and its position may be fixed.

[0112] Therefore, in order for the valve disc 30 to rotate as the direction of the current flowing into the solenoid coil 21 changes, the valve disc 30 located at the closed position CP does not need to be parallel in the direction of the rotation axis 33 when viewed in the direction of the rotation axis 33 .

[0113] To achieve this, Figure 5 As shown, when the valve disc 30 located in the closed position CP is observed in the direction of the rotation axis 33, the valve disc 30 can be formed into a state of being rotated by a specific angle in a second rotation direction R2 from the closed position CP to an open position OP parallel to the first direction ("X" direction) on an imaginary reference line passing through the rotation axis 33 in a direction ("Y" direction) perpendicular to the first direction ("X" direction).

[0114] Meanwhile, when the valve disc 30 located at the closed position CP is viewed in the direction of the rotation axis 33 , since the valve disc 30 is not parallel to the third direction (“Y” direction), the valve disc 30 may be rotated by the magnetic force.

[0115] More specifically, the valve disc 30 may include a first portion 34 that moves to the upstream side of the passage 13 when the valve disc 30 rotates from the closed position CP to the open position OP, and a second portion 35 that moves to the downstream side of the passage when the valve disc 30 rotates from the closed position CP to the open position OP, in two portions of the valve disc 30 divided by the rotation axis 33. At this time, when viewed in the direction of the rotation axis 33, the first portion 34 and the second portion 35 may be subjected to a magnetic force to rotate until they are positioned parallel to the third direction (the "Y" direction), and in order to prevent this, the valve body 10 may include a guide rib 15 protruding from the inner peripheral surface 14 defining the passage 13.

[0116] In other words, the guide ribs 15 may protrude from the inner circumferential surface 14 to prevent the valve disc 30 located at the closed position CP from rotating in the first rotation direction R1 from the open position OP to the closed position CP.

[0117] The guide rib 15 may include a first guide rib 15 a configured to support the first portion 34 of the valve disc 30 located at the closed position CP, and a second guide rib 15 b configured to support the second portion 35 of the valve disc 30 .

[0118] When the valve disc 30 is located in the closed position CP, the first guide rib 15a can support the surface of the first portion 34 facing the downstream side of the passage 13, and when the valve disc is located in the closed position CP, the second guide rib 15b can support the surface of the second portion 35 facing the upstream side of the passage 13.

[0119] The first guide rib 15a and the second guide rib 15b may be spaced apart from each other in the first direction (the "X" direction). The first guide rib 15a and the second guide rib 15b may be disposed to be spaced apart from each other in the first direction so that the second portion 35 of the valve disc 30 located at the closed position CP is disposed on the first direction (the "X" direction) side of the first portion 34.

[0120] In this way, when the valve disc 30 is located in the closed position CP, due to the first guide rib 15a and the second guide rib 15b, the valve disc 30 can be tilted and not parallel to the third direction ("Y" direction) perpendicular to the first direction ("X" direction) and the second direction ("Z" direction).

[0121] like Figure 3 and Figure 4 As shown, when viewed in a first direction ("X" direction), the guide rib 15 can be arranged in a third direction ("Y" direction) or in an opposite direction (-Y direction) of the third direction from an imaginary reference line passing through the rotation axis 33 in a second direction ("Z" direction).

[0122] That is, the first guide rib 15 a may be disposed in the third direction (“Y” direction) of the imaginary reference line passing through the rotation shaft 33 , and the second guide rib 15 b may be disposed in the third direction (−Y direction) of the imaginary reference line passing through the rotation shaft 33 .

[0123] This is because when the first guide rib 15 a or the second guide rib 15 b exceeds an imaginary reference line passing through the rotation shaft 33 , the valve disc 30 may interfere with the first guide rib 15 a or the second guide rib 15 b and not rotate.

[0124] In more detail, the first guide rib 15a may extend along the left semicircle of the inner circumferential surface 14, and the second guide rib 15b may extend along the right semicircle of the inner circumferential surface 14. However, the present invention is not limited thereto, and it is sufficient as long as the first guide rib 15a and the second guide rib 15b do not exceed the imaginary reference line passing through the rotation shaft 33.

[0125] Although not shown in the drawings, a sealing member (not shown) formed of rubber or the like may be provided between the first portion 34 of the valve disc 30 and the first guide rib 15a, and between the second portion 35 of the valve disc 30 and the second guide rib 15b. The sealing member may be attached to the guide ribs 15a, 15b or the valve disc 30. The sealing member may seal the gap between the valve disc 30 and the guide ribs 15a, 15b to more effectively prevent the flow of the fluid when the valve disc 30 is in the closed position CP.

[0126] In addition, when the valve disc 30 is located at the closed position CP, the fluid can be prevented from flowing through the channel 13, and the second surface 30b of the valve disc 30 can face the fluid flowing toward the valve disc 30, and thus can rotate in the first rotation direction R1. Moreover, in this case, the first guide rib 15a and the second guide rib 15b can prevent the valve disc 30 located at the closed position CP from rotating in the first rotation direction R1, and therefore, the position of the valve disc 30 can be fixed at the closed position CP.

[0127] According to this structure, since the gaps between the first portion 34 of the valve disc 30 and the first guide rib 15a and between the second portion 35 of the valve disc 30 and the second guide rib 15b may be relatively small or may not occur, the airtightness of the valve disc 30 and the passage 13 may be improved.

[0128] Hereinafter, a process of rotating the valve disc 30 to the open position OP by changing the direction of the current in the solenoid coil 21 will be described in detail.

[0129] Figure 6 is a side sectional view of an on / off valve when the valve disk rotates in a second rotation direction in a closed state according to one embodiment of the present invention. Figure 7 is a cross-sectional view of an on / off valve viewed in the rotation axis direction of the valve disk when the valve disk rotates in the second rotation direction in a closed state according to one embodiment of the present invention. Figure 8 is a side cross-sectional view of an on / off valve when the valve disk rotates in a second rotation direction according to an embodiment of the present invention. Fig. 9 is a cross-sectional view of the on / off valve viewed in the rotation axis direction of the valve disk when the valve disk rotates in the second rotation direction according to one embodiment of the present invention. Fig.10 is a side sectional view of an on / off valve according to one embodiment of the present invention when the valve disc is in an open state. Fig.11 is the edge viewed from the first direction Fig.10 An enlarged view of the cross section of line "C". Fig.12 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in an open state according to an embodiment of the present invention.

[0130] At the same time, refer to Figures 6 to 12 When the solenoid coil 21 is observed in a first direction ("X" direction), when the direction of the current flowing through the solenoid coil 21 is clockwise, a magnetic field of a second magnetic pole (example: "S" pole) can be induced in a portion of the solenoid coil 21 close to the inlet 11, and a magnetic field of a first magnetic pole (example: "N" pole) can be induced in a portion of the solenoid coil 21 close to the outlet 12.

[0131] That is, the solenoid coil 21 may be configured such that currents flowing in opposite directions are applied when the valve disc 30 in the closing position CP moves in the second rotation direction R2 and when the valve disc 30 in the opening position OP moves in the first rotation direction R1 .

[0132] Moreover, in this case, the direction of the magnetic field within the solenoid coil 21 formed by the solenoid coil 21 may be the first direction (the "X" direction). Because the first magnetic pole portion 31 of the valve disc 30 is provided with a first magnetic pole (example: "N" pole) and the second magnetic pole portion 32 is provided with a second magnetic pole (example: "S" pole), the direction of the magnetic field formed by the valve disc 30 may be a direction starting from the first magnetic pole portion 31 and entering the second magnetic pole portion 32.

[0133] At this time, if Figure 7 As shown, the downstream side of the channel 13 relative to the first portion 34 becomes a relatively sparse area compared to the downstream side of the channel 13 relative to the second portion 35, and the upstream side of the channel 13 relative to the second portion 35 becomes a relatively sparse area compared to the upstream side of the channel 13 relative to the first portion 34. Therefore, the valve disc 30 may be subjected to a magnetic force so that it rotates in the second rotation direction R2 of the counterclockwise direction.

[0134] As the valve disc 30 rotates in the second rotation direction R2, the difference between the dense area and the sparse area adjacent to the valve disc 30 becomes larger until the open position OP is reached, whereby the magnetic force strength received by the valve disc 30 may gradually become higher. When the valve disc 30 rotates in the second rotation direction R2, the first portion 34 of the valve disc 30 may rotate toward the stopper 16.

[0135] The valve disc 30 may be subjected to a magnetic force until the first magnetic pole portion 31 faces the upstream side of the passage 13 and the second magnetic pole portion 32 faces the downstream side of the passage 13. However, since the first surface 30a of the valve disc 30 may be in a position where the passage 13 is most open when it faces the third direction (the "Y" direction), the valve disc 30 may require a structure for fixing its position at the open position OP.

[0136] To achieve this, the valve body 10 may include a stopper 16 protruding from the inner circumferential surface 14 to prevent the valve disc 30 from rotating in the second rotation direction R2 from the open position OP.

[0137] The valve disc 30 may rotate in the second rotation direction R2 until the first portion 34 of the valve disc 30 contacts the stopper 16. The position where the valve disc 30 contacts the stopper 16 may be the open position OP of the valve disc 30.

[0138] like Fig.11 As shown, when viewed in the first direction ("X" direction), the stopper 16 may be spaced apart from an imaginary center line passing through the center "O" of the passage in the second direction ("Z" direction) in a direction perpendicular to the second direction ("Z" direction). The stopper 16 may be located on the right side (-Y direction) of the imaginary center line. This is because at the moment when the valve disc 30 contacts the stopper 16, the valve disc 30 will be disposed on the imaginary center line passing through the center of the passage 13 in the second direction ("Z" direction).

[0139] In other words, when the valve disc 30 is located at the open position OP, it may be located at a position where the passage 13 is most open. The stopper 16 may support the valve disc 30 to prevent the valve disc 30 at the open position OP from rotating in the second rotation direction R2.

[0140] As long as the direction of the current flowing through the solenoid coil 21 does not change, the valve disc 30 contacting the stopper 16 can be continuously located at the open position OP, and thus the flow of the fluid can be guided through the on / off valve 1 .

[0141] As described above, the closed position CP of the valve disc 30 may be a position rotated from the third direction (Y direction) perpendicular to the first direction (X direction) to the second rotation direction R2 by a predetermined angle. The open position OP of the valve disc 30 may be parallel to the first direction (X direction).

[0142] However, not limited thereto, the closing position CP of the valve disc 30 may be a position parallel to the third direction (Y direction), and the opening position OP of the valve disc 30 may be a position parallel to the first direction (X direction).

[0143] The valve disc 30 can rotate 0 to 90 degrees clockwise relative to an imaginary line parallel to the first direction (X direction). Due to the magnetic force induced by the solenoid coil 21, the valve disc 30 can rotate 0 to 90 degrees clockwise or counterclockwise relative to an imaginary line parallel to the first direction (X direction).

[0144] However, without limitation thereto, the valve disc 30 may be rotated between a first position and a second position between the first direction (X direction) and the third direction (Y direction). Here, the first position may be a position rotated clockwise by a predetermined angle in the first direction (X direction), and the second position may be a position rotated by a predetermined angle in the third direction (Y direction). Due to the magnetic force induced by the solenoid coil 21, the valve disc 30 may stop at the first position and the second position.

[0145] Hereinafter, the principle of rotating the valve disc 30 again from the open position OP to the closed position CP will be described in detail.

[0146] Fig.13 is a side sectional view of an on / off valve according to one embodiment of the present invention when a valve disk rotates in a first rotation direction in an open state. Fig.14 is a cross-sectional view of an on / off valve viewed in a rotation axis direction of the valve disk when the valve disk rotates in a first rotation direction in an open state according to an embodiment of the present invention. Fig.15 is a side cross-sectional view of an on / off valve when a valve disk rotates in a first rotation direction according to an embodiment of the present invention. Fig.16 is a cross-sectional view of an on / off valve viewed in a rotation axis direction of the valve disk when the valve disk rotates in a first rotation direction according to an embodiment of the present invention. Fig.17 is a side cross-sectional view of an on / off valve according to one embodiment of the present invention when the valve disc is in a closed state. Fig.18 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to an embodiment of the present invention.

[0147] Reference Figures 13 to 18 , the current applied through the solenoid coil 21 can be Figures 6 to 12 That is, when the solenoid coil 21 is observed in the first direction (the "X" direction), a current may be applied in the counterclockwise direction of the solenoid coil 21, thereby forming a first magnetic pole (example: "N" pole) at a portion close to the inlet 11, and forming a second magnetic pole (example: "S" pole) at a portion close to the outlet 12.

[0148] Because due to such a magnetic field, a region with a relatively sparse magnetic field can be formed on the downstream side of the channel 13 compared with the upstream side of the channel 13 of the first magnetic pole portion 31, and a region with a relatively sparse magnetic field can be formed on the upstream side of the channel 13 compared with the downstream side of the channel 13 of the second magnetic pole portion 32, the valve disc 30 located in the open position OP can be rotated from the stopper 16 in the first rotation direction R1.

[0149] That is, the first portion 34 of the valve disc 30 may be spaced apart from the stopper 16, and the first portion 34 of the valve disc 30 may be rotated in the first rotation direction toward the first guide rib 15a. The first rotation direction R1 may be understood as a direction opposite to the second rotation direction R2 in which the valve disc 30 located at the closed position CP rotates to be located at the open position OP.

[0150] As the valve disc 30 rotates about the rotation axis 33 from the open position OP to the closed position CP, the passage 13 is further closed, whereby the flow of the fluid may stagnate.

[0151] like Fig.17 and Fig.18 As shown, when the first portion 34 of the valve disc 30 contacts the first guide rib 15a and the second portion 35 of the valve disc 30 contacts the second guide rib 15b, the valve disc 30 is prevented from rotating in the first rotation direction R1, so the position of the valve disc 30 can be fixed again in the closed position CP.

[0152] As described above, the valve disc 30 is rotatable from the open position OP to the closed position CP in the first rotation direction R1 , and is rotatable from the closed position CP to the open position OP in the second rotation direction R2 .

[0153] The magnitude of the current applied to the solenoid coil 21 during the rotation of the valve disc 30 in the first rotation direction R1 and the second rotation direction R2 may be relatively small compared to when the valve disc 30 starts to rotate from the open position OP to the closed position CP in the first rotation direction R1 and starts to rotate from the closed position CP to the open position OP in the second rotation direction R2.

[0154] Meanwhile, during the period when the valve disc 30 is located at the closed position CP, the flow of the fluid through the passage 13 can be prevented, and thus the fluid can stagnate to freeze in the portion close to the valve disc 30. At this time, when a high voltage is applied to the solenoid coil 21, the fluid flowing through the passage 13 can be thawed. According to this structure, a high voltage can be applied to the solenoid coil 21 without any configuration such as a separate heater, so that the fluid in the portion close to the valve disc 30 can be thawed by utilizing the heat generated by the solenoid coil 21.

[0155] Fig.19 Schematic diagram of a valve disc in a closed state and an open state according to an embodiment of the present invention. Fig. 20FIG. 4 is a schematic diagram of torque for rotating a valve disc according to an embodiment of the present invention.

[0156] Reference Fig.19 and Fig. 20 , the angles of the valve disc 30 in the open position OP and the closed position CP can be identified. When the valve disc 30 is in the open position OP, the first magnetic pole portion 31 and the second magnetic pole portion 32 may be arranged to face each other in opposite directions in the third direction ("Y" direction).

[0157] The valve disc 30 can be rotated in a first rotational direction R1 from an open position OP to a closed position CP, whereby its position can be determined by the guide ribs 15 (see Figure 2 ) is fixed. The valve disc 30 may be configured to rotate from the open position OP to the closed position CP at an angle less than 90 degrees in the first rotation direction R1. The valve disc 30 in the closed position CP may be arranged to rotate at an angle of about 87 degrees in the first rotation direction R1 relative to the valve disc 30 in the open position OP.

[0158] Reference Fig. 20 , the angle of 0 degrees may correspond to the first surface 30a of the valve disc 30 (see Figure 2 ) and the second surface 30b face opposite directions in the first direction ("X" direction), the angle of 90 degrees may correspond to when the valve disc 30 is in the open position OP. That is, the closed position CP of the valve disc 30 may correspond to about 3 degrees. Fig. 20 As shown, when voltage is applied to the solenoid coil 21 to rotate the valve disc 30 in the closed position CP, the torque of the valve disc 30 caused by the magnetic force may gradually increase as the valve disc 30 rotates from the closed position CP to the open position OP in the second rotation direction R2.

[0159] Although not shown in the figure, in the absence of the stopper 16 (see Fig.14 ), as the valve disc 30 further rotates from the open position OP in the second rotation direction R2, the torque for rotating the valve disc 30 may gradually become smaller.

[0160] However, not limited thereto, the closed position CP of the valve disc 30 may be parallel to a third direction (Y direction) perpendicular to the first direction (X direction), and the open position OP of the valve disc 30 may be parallel to the first direction (X direction).

[0161] However, without limitation thereto, the valve disc 30 may be rotated between a first position and a second position between the first direction (X direction) and the third direction (Y direction). Here, the first position may be a position rotated clockwise by a predetermined angle in the first direction (X direction), and the second position may be a position rotated by a predetermined angle in the third direction (Y direction). Due to the magnetic force induced by the solenoid coil 21, the valve disc 30 may stop at the first position and the second position.

[0162] Fig.21 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention.

[0163] Reference Fig.21 , when viewed in the direction of the rotation axis 33, the valve disc 30 may be rotated by the rotation axis 33 provided on the boundary line between the first magnetic pole portion 31 and the second magnetic pole portion 32 extending in the third direction (the "Y" direction) perpendicular to the first direction (the "X" direction). When the valve disc 30 is located in the closed position CP, the inner circumferential surface 14 may be provided on both sides of the first direction (the "X" direction).

[0164] At this time, the on / off valve 1 may further include valve seat members 17 a and 17 b configured such that the valve disc 30 is seated on the valve seat members 17 a and 17 b between the inner peripheral surface 14 and the valve disc 30 located at the closed position CP.

[0165] The first valve seat member 17 a may be disposed between the inner circumferential surface 14 and the first portion 34 of the valve disc 30 , and the second valve seat member 17 b may be disposed between the inner circumferential surface 14 and the second portion 35 of the valve disc 30 .

[0166] The valve seat members 17 a and 17 b may be understood as configurations provided between the valve disc 30 and the inner circumferential surface 14 to seal the gap between the valve disc 30 and the valve body 10 and relatively reduce wear due to rotation of the valve disc 30 .

[0167] Fig. 22 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention.

[0168] Reference Fig. 22 The valve disc 130 may be different from the structure in which the rotation axis 33 of the valve disc 30 is concentric with the rotation center of the valve disc 30 .

[0169] When viewed in the direction of the rotation axis 133, the rotation axis 133 of the valve disc 130 may be spaced apart from an imaginary reference line in a first direction ("X" direction) or in the opposite direction of the first direction ("X" direction), which extends in a direction perpendicular to the first direction ("X" direction) and is arranged at the same distance as the surface of the valve disc 130 facing the first direction ("X" direction) toward the downstream side of the channel in the closed position CP and the surface facing the opposite direction (-X direction) of the first direction toward the upstream side of the channel.

[0170] The valve disc 130 may be provided as a single offset valve configured such that the rotation axis 133 is offset in a direction (-X direction) opposite to the first direction ("X" direction) relative to the first magnetic pole portion 131 provided with a first magnetic pole and the second magnetic pole portion 132 provided with a second magnetic pole opposite to the first magnetic pole. The rotation axis 133 of the valve disc 130 may be located on the center line of the channel 113 extending in the first direction ("X" direction).

[0171] The valve disc 130 may rotate symmetrically about the rotation axis 133 , and when the valve disc 130 is in the closed position CP, the first and second valve seat members 117 a and 117 b for fixing the position of the valve disc 130 may be located at both sides of the valve disc 130 .

[0172] The first valve seat member 117a and the second valve seat member 117b may protrude from the inner circumferential surface 114 of the valve body defining the passage 113 toward the passage 113. The first valve seat member 117a may be configured to support the first portion 134 of the valve disc 130 in the closed position CP, and the second valve seat member 117b may be configured to support the second portion 135 of the valve disc 130 in the closed position CP.

[0173] The valve seat members 117 a and 117 b may be provided with an elastic member to allow soft rotation of the valve disc 130 , and may seal a gap between the valve disc 130 and the inner circumferential surface 114 .

[0174] Fig.23 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention.

[0175] Reference Fig.23 The valve disc 230 may be different from the structure in which the rotation axis 33 of the valve disc 30 is concentric with the rotation center of the valve disc 30 .

[0176] and Fig. 22 In contrast, the rotation axis 233 may be spaced apart from an imaginary center line passing through the center of the channel 13 in the first direction (the “X” direction) in a direction perpendicular to the first direction (the “X” direction).

[0177] The valve disc 230 may be provided with a double offset valve, which is configured so that the rotating shaft 233 is offset in a direction (-X direction) opposite to the first direction ("X" direction) relative to the first magnetic pole portion 231 provided with a first magnetic pole and the second magnetic pole portion 232 provided with a second magnetic pole opposite to the first magnetic pole, and is set in a third direction ("Y" direction) or a direction (-Y direction) opposite to the third direction relative to a center line passing through the center of the channel 213 in the first direction ("X" direction).

[0178] When the valve disc 230 is located at the closing position CP, valve seat members 217 a and 217 b configured to seat the valve disc 230 may be provided on both sides of the valve disc 230 .

[0179] The valve disc 230 as a double offset valve may have friction only during rotation of about 10 degrees around the rotation axis 233. In other words, the angle at which the valve disc 230 is subjected to friction due to the first valve seat member 217a provided between the first portion 234 and the inner circumferential surface 214 and the second valve seat member 217b provided between the second portion 235 and the inner circumferential surface 214 relative to the rotation direction of the valve disc 230 may be relatively small compared to a single offset valve.

[0180] That is, since the valve disc 230 can rotate while receiving lower friction when opening and closing the channel 213, the durability of the valve disc 230 can be improved, and thus, it can be easily used even when opening and closing high-pressure and high-temperature fluids.

[0181] Fig.24 is a schematic diagram of an on / off valve when the valve disc is in a closed state according to another embodiment of the present invention.

[0182] Reference Fig.24 , the valve disc 330 may be a triple offset valve. The rotation axis 333 of the valve disc 330 may be connected to the valve disc 230 (see Fig.23 ) corresponds to the position of the rotation axis 233.

[0183] Hereinafter, only the structures of the valve disc 330 as the triple offset valve that are different from the valve disc 230 as the double offset valve will be described, and the corresponding structures will be omitted.

[0184] When the valve disc 330 is located at the closing position CP, valve seat members 317 a and 317 b configured to seat the valve disc 330 may be provided on both sides of the valve disc 330 .

[0185] The first valve seat member 317a may be disposed between the inner circumferential surface 314 and the first portion 334 of the valve disc 330 in the closed position CP. The second valve seat member 317b may be disposed between the inner circumferential surface 314 and the second portion 335 of the valve disc 330 in the closed position CP.

[0186] The first valve seat member 317a may include a valve seat surface 317aa formed to be inclined toward the inside of the channel 313 relative to the first direction ("X" direction) to prevent the valve disc 330 in the closed position CP from rotating in the first rotation direction from the open position to the closed position CP.

[0187] Accordingly, the valve disc 330 may include a contact surface 334a formed to correspond to the valve seat surface 317aa so as to contact the valve seat surface 317aa when located at the closed position CP. The contact surface 334a may be inclined toward the first direction ("X" direction) along an imaginary center line passing through the center of the channel 313 in the first direction ("X" direction).

[0188] Since the contact surface 334 a is seated on the valve seat surface 317 aa while the valve disc 330 rotates from the open position to the closed position CP in the first rotation direction, the rotation of the valve disc 330 may be stopped and the passage 313 may be closed.

[0189] At this time, the second portion 335 of the valve disc 330 may be supported by the support surface 317 ba of the second valve seat member 317 b .

[0190] While the valve disc 330 as a triple offset valve rotates from the open position OP to the closed position CP, the valve disc 330 may be subjected to friction only when contacting the valve seat members 317 a and 317 b , and thus may be understood as a structure with relatively improved durability.

[0191] Therefore, when the valve disc 330 opens and closes the passage 313, it can rotate while being subjected to a low friction force, and thus can be easily used even when opening and closing a fluid of high pressure and temperature.

[0192] Fig.25 is a side sectional view of an on / off valve according to another embodiment of the present invention when the valve disc is in a closed state.

[0193] Reference Fig.25 , the on / off valve 401 may include a valve disc 430 having a magnetic body. The on / off valve 401 may include a steel plate instead of the structure of the first magnetic pole portion 31 and the second magnetic pole portion 32 of the valve disc 30 described above.

[0194] According to this structure, voltage can be applied to the solenoid coil 421 only when the valve disk 430 is to be rotated from the closing position CP to the opening position.

[0195] That is, when voltage is applied to the solenoid coil 421, a first magnetic pole is formed at a portion near the inlet 411, and a second magnetic pole is formed at a portion near the outlet 412, so that the valve disc 430 can be rotated about 90 degrees in the second rotation direction by passing the rotation axis of the valve disc 430 through the inner circumferential surface 414.

[0196] At this time, the position of the valve disc 430 may be fixed at the open position by the stopper 416. When the valve disc 430 is to be returned from the open position to the closed position CP again, no voltage may be applied to the solenoid coil 421.

[0197] The on / off valve 401 may include a torsion spring 450 coupled to the inner circumferential surface 414 and the valve disc 430. While surrounding the valve disc 430, one end of the torsion spring 450 may be coupled to a first support portion 414a protruding from the inner circumferential surface 414 toward the passage 413, and the other end may be coupled to a second support portion 414b spaced apart from the first support portion 414a while protruding from the inner circumferential surface 414.

[0198] The torsion spring 450 may provide elastic force to rotate the valve disc 430 in a direction from the open position to the closed position CP.

[0199] According to this structure, the torsion spring 450 can provide torque to the valve disc 430 to prevent the rotation of the valve disc 430. When voltage is applied to the solenoid coil 421, that is, while magnetic force is provided to the valve disc 430, the valve disc 430 can be prevented from rotating in the direction from the open position to the closed position CP, that is, the first rotation direction, and when voltage is not applied to the solenoid coil 421, the valve disc 430 can be rotated in the first rotation direction by the torsion spring 450 so that its position returns to the closed position CP.

[0200] Furthermore, conversely, when a voltage is applied to the solenoid coil 421 , the valve disc 430 may move from the open position to the closed position CP, and the torsion spring 450 may provide elastic force to rotate the valve disc 430 from the closed position CP to the open position.

[0201] According to this structure, the rotation of the valve disk 430 can be guided by turning on or off the voltage applied to the solenoid coil 421 without changing the direction of the current flowing to the solenoid coil 421 .

[0202] Fig.26 is a side sectional view of an on / off valve according to another embodiment of the present invention when the valve disc is in a closed state. Fig. 27 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in a closed state according to another embodiment of the present invention. Fig.28 is a cross-sectional view of an on / off valve viewed in the direction of the rotation axis of the valve disc when the valve disc is in an open state according to another embodiment of the present invention. Fig.29 FIG. 4 is a schematic diagram of a torque for rotating a valve disk according to another embodiment of the present invention.

[0203] Reference Figure 26 to Figure 29, the first magnetic pole portion 531 of the valve disc 530 of the on / off valve 501 may be provided with a first magnetic pole (example: “N” pole), and the second magnetic pole portion 532 may be provided with a second magnetic pole (example: “S” pole).

[0204] That is, in the two parts of the valve disc 530 divided by the rotating shaft 533, the valve disc 530 may include a first part 534 and a second part 535, the first part 534 moves to the downstream side of the channel 513 when the valve disc 530 rotates from the closed position CP to the open position OP, and includes a magnetic body of a first magnetic pole, and the second part 535 moves to the upstream side of the channel 513, and includes a magnetic body of a second magnetic pole opposite to the first magnetic pole.

[0205] The first magnetic pole portion 531 may be a first portion 534 , and the second magnetic pole portion 532 may be a second portion 535 .

[0206] When the valve disc 530 is in the closed position CP, the first portion 534 of the valve disc 530 may be located on the first direction (“X” direction) side of the second portion 535 of the valve disc 530 .

[0207] When a current flowing in a counterclockwise direction when viewed in a first direction ("X" direction) is applied to the solenoid coil 521 while the valve disc 530 is in the closed position CP, a first magnetic pole (example: "N" pole) may be formed in a portion near the inlet 511, and a second magnetic pole (example: "S" pole) may be formed in a portion near the outlet 512.

[0208] At this time, a relatively sparse magnetic field area can be set on the downstream side of the channel 13 rather than the upstream side of the channel 13 relative to the first magnetic pole portion 531 of the valve disc 530, and a relatively sparse magnetic field area can be set on the upstream side of the channel 13 rather than the downstream side of the channel 13 relative to the second magnetic pole portion 532.

[0209] Therefore, the first magnetic pole portion 531 of the valve disc 530 can rotate from the upstream side to the downstream side of the passage 513, and the second magnetic pole portion 532 can rotate from the downstream side to the upstream side of the passage 513. That is, the valve disc 530 can receive torque in the direction of rotating from the closed position CP to the open position OP, that is, the second rotation direction.

[0210] The second portion 535 of the valve disc 530 may rotate in the second rotational direction until contacting the stopper 516 disposed on an imaginary center line passing through the center of the passage 513 in the first direction ("X" direction). Although not shown in the drawings, the stopper 516 may be disposed on an imaginary reference line passing through the rotation axis 533 in the second direction ("Z" direction) when viewed in the first direction ("X" direction).

[0211] At the moment when the second portion 535 of the valve disc 530 contacts the stopper 516 , the valve disc 530 may be located at the open position OP. The valve disc 530 may rotate in the second rotational direction until being stopped by the stopper 516 from rotating in the second rotational direction.

[0212] The stopper 516 may be disposed on a centerline passing through the center of the passage 513 in a first direction (“X” direction), and the open position OP of the valve disc 530 may be disposed not parallel to the first direction (“X” direction).

[0213] At the same time, when viewed in the first direction ("X" direction), when a current flowing in a clockwise direction is applied to the solenoid coil 521, a first magnetic pole (example: "N" pole) is formed in the portion close to the outlet 512, and a second magnetic pole (example: "S" pole) is formed in the portion close to the inlet 511, whereby the valve disc 530 can rotate in the direction from the open position OP to the closed position CP, that is, in the first rotation direction.

[0214] At this time, the valve disc 530 may rotate in the first rotation direction until the first portion 534 contacts the guide rib 515 .

[0215] That is, the valve disc 530 may be in the closed position CP when the first portion 534 is stopped by the guide rib 515 , and may be in the open position OP when the second portion 535 of the valve disc 530 is stopped by the stopper 516 .

[0216] Reference Fig.29 When the valve disc 530 is in the open position OP, the angle may be close to 90 degrees, and when the valve disc 530 is in the closed position CP, the angle may be 0 degrees or close to 0 degrees.

[0217] However, not limited thereto, the closing position CP of the valve disc 530 may have an angle of a first predetermined degree, and the opening position OP of the valve disc 530 may have an angle of a second predetermined degree greater than the first predetermined degree.

[0218] Under the structure of the valve disc 530, when the valve disc 530 is in the closed position CP, the torque used to rotate the valve disc 530 to the open position OP may be highest at the moment when voltage is applied to the solenoid coil 521, and may gradually decrease as the valve disc 530 rotates to the open position OP in the second rotation direction.

[0219] Furthermore, even when the valve disc 530 is located at the open position OP, the valve disc 530 is disposed not parallel to the first direction (“X” direction), so that the torque of the valve disc 530 may not be 0 when the rotation stops at an angle less than about 90 degrees.

[0220] At this time, when current is applied to the solenoid coil 521 in the opposite direction, the torque of the valve disc 530 at the open position OP may gradually become higher from a torque higher than 0 as the valve disc 530 rotates in the first rotation direction to the closed position CP.

[0221] Meanwhile, unlike shown in the drawings, the guide rib 515 may be disposed further upstream of the passage 513 , whereby the valve disc 530 located at the closed position CP may be disposed parallel to the third direction (“Y” direction) when viewed in the direction of the rotation axis 533 .

[0222] According to the above structure, while the valve disc 530 is in the closed position CP to close the channel 513, the flow of the fluid may stop and the fluid may freeze. Even in this case, regardless of whether the fluid is thawed by utilizing the above-mentioned solenoid coil 521, the valve disc 530 in the closed position CP can be rotated to the open position OP with a higher torque, thereby effectively destroying the frozen fluid in the channel 513.

[0223] In other words, in a structure requiring a higher torque at the closed position CP than the first embodiment of the present invention, the structure of the on / off valve 501 as another embodiment of the present invention may be used.

[0224] The above structure can open and close the channels 13, 113, 213, 313, 413, and 513 by rotating the valve disc 30, 130, 230, 330, 430, and 530 using the solenoid coil 21, 421, and 521, without any structure such as a motor or a gear, thereby improving durability and productivity. In addition, since the valve disc 30, 130, 230, 330, 430, and 530 are rotated by magnetic force by using the solenoid coil 21, 421, and 521, the sealing performance of the channels 13, 113, 213, 313, 413, and 513 can be improved compared to a mechanical rotation structure, thereby improving the functionality of the on / off valves 1, 401, and 501.

[0225] According to the present technology, since the valve disk can be rotated by using the solenoid coil, the sealing performance of the on / off valve can be improved, and the durability thereof can be further improved.

[0226] Furthermore, according to the present technology, since the valve disk can be operated without other components such as a motor and a gear, the structure can be simpler and productivity can be further improved.

[0227] Furthermore, the present technology can provide a structure that can thaw a fluid without a separate heater by using a solenoid coil.

[0228] In addition, the present invention can provide various effects recognized directly or indirectly.

[0229] The above description is a simple exemplary description of the technical idea of ​​the present invention, and a person skilled in the art to which the present invention belongs may make various corrections and modifications without departing from the essential features of the present invention.

[0230] Therefore, the embodiments disclosed in the present invention are not intended to limit the technical ideas of the present invention, but to illustrate, and the scope of the technical ideas of the present invention is not limited by the embodiments. The protection scope of the present invention should be interpreted by the attached claims, and all technical ideas within the equivalent scope should be interpreted as included in the scope of the present invention.

Claims

1. An on / off valve, comprising: a valve body defining a passage through which a fluid can flow in a first direction; a solenoid coil mounted on the valve body along the first direction to surround the passage at an outer side of the passage; as well as A valve disc includes a magnetic body, and the valve disc is rotatable in the passage to open and close the passage using the solenoid coil.

2. The on / off valve according to claim 1, wherein: The valve disc is rotatable about a rotation axis extending in a second direction perpendicular to the first direction, and the valve disc is rotatable between a closed position and an open position, wherein the on / off valve is configured such that when the valve disc is in the closed position, flow of fluid through the channel is blocked, and when the valve disc is in the open position, flow of fluid through the channel is allowed.

3. The on / off valve according to claim 2, wherein: The direction in which the valve disc rotates from the open position to the closed position is defined as a first rotation direction; The inner peripheral surface of the valve body defines the passage; and The valve body includes a guide rib protruding from an inner circumferential surface of the valve body to prevent the valve disk from rotating in the first rotation direction from the closed position.

4. The on / off valve according to claim 3, wherein: The valve disc is divided into a first portion and a second portion by the rotation axis; The first portion is movable to an upstream side of the passage when the valve disc is rotated from the closed position to the open position; the second portion being movable to a downstream side of the passage; and The guide rib protrudes from an inner peripheral surface of the valve body to support a surface of the first portion.

5. The on / off valve according to claim 3, wherein: The valve disc is divided into a first portion and a second portion by the rotation axis; The first portion is movable to an upstream side of the passage when the valve disc is rotated from the closed position to the open position; the second portion being movable to a downstream side of the passage; and The guide rib protrudes from an inner peripheral surface of the valve body to support a surface of the second portion.

6. The on / off valve according to claim 3, wherein: When viewed in the first direction, the guide rib is provided in a third direction perpendicular to the second direction or in a direction opposite to the third direction from an imaginary reference line passing through the rotation axis in the second direction.

7. The on / off valve according to claim 2, wherein: When viewed in the direction of the rotation axis, the valve disc defines the closed position when the valve disc is rotated by a specified angle in the direction from the closed position to the open position relative to an imaginary reference line passing through the rotation axis along a third direction perpendicular to the first direction.

8. The on / off valve according to claim 2, wherein: The inner peripheral surface of the valve body defines the passage; A direction in which the valve disc rotates from the closed position to the open position is defined as a second rotation direction; and The valve body includes a stopper configured to protrude from an inner peripheral surface of the valve body to prevent the valve disk from rotating in the second rotation direction at the open position.

9. The on / off valve according to claim 8, wherein: The stopper is spaced apart from an imaginary center line passing through a center of the passage in the second direction in a direction perpendicular to the second direction when viewed in the first direction.

10. The on / off valve according to claim 2, wherein: The solenoid coil is configured to apply currents in opposite directions when moving the valve disc in the closed position to the open position and when moving the valve disc in the open position to the closed position.

11. The on / off valve according to claim 2, further comprising a torsion spring configured to provide an elastic force to rotate the valve disc from the open position to the closed position or to rotate the valve disc from the closed position to the open position.

12. An on / off valve, comprising: a valve body defining a passage through which a fluid can flow in a first direction; a valve disc disposed at a position within the passage and comprising a magnetic body, the valve disc being rotatable about a rotation axis between a closed position and an open position, wherein the rotation axis extends in a second direction perpendicular to the first direction, and wherein the on / off valve is configured such that when the valve disc is in the closed position, flow of the fluid through the passage is blocked, and when the valve disc is in the open position, flow of the fluid through the passage is allowed; and A solenoid coil is mounted outside the passage to surround the position in the passage where the valve disc is disposed.

13. The on / off valve according to claim 12, wherein: A surface of the valve disc facing the downstream side of the passage in the closed position includes a magnetic body of a first magnetic pole; and A surface of the valve disk facing the upstream side of the passage in the closed position includes a magnetic body having a second magnetic pole opposite to the first magnetic pole.

14. The on / off valve according to claim 13, wherein: When viewed in the direction of the rotation axis, the rotation axis is spaced apart from an imaginary reference line in the first direction or in a direction opposite to the first direction, the imaginary reference line extends in a direction perpendicular to the first direction, and is arranged at the same distance from a surface facing the first direction on the downstream side of the channel in the closed position and a surface facing the direction opposite to the first direction on the upstream side of the channel in the closed position. 15 . The on / off valve according to claim 14 , further comprising a valve seat member configured to seat the valve disc between an inner peripheral surface of the valve body defining the passage and the closed position.

16. The on / off valve according to claim 15, wherein: The valve seat member includes a valve seat surface configured to be inclined toward the inner side of the passage relative to the first direction when viewed in the direction of the rotation axis to prevent the valve disc in the closed position from rotating in the first rotation direction from the open position to the closed position; and The valve disc includes a contact surface formed to correspond to the valve seat surface to contact the valve seat surface in the closed position.

17. An on / off valve, comprising: a valve body defining a passage through which a fluid can flow in a first direction; a solenoid coil mounted on the valve body along the first direction to surround the passage at an outer side of the passage; as well as a valve disc located within the passage; wherein the valve disc is rotatable about a rotation axis extending in a second direction perpendicular to the first direction; wherein the valve disc is rotatable between a closed position and an open position; wherein the on / off valve is configured such that when the valve disc is in the closed position, flow of fluid through the passage is blocked, and when the valve disc is in the open position, flow of fluid through the passage is allowed; Wherein, the valve disc comprises a first part and a second part divided by the rotation axis; wherein, when the valve disc rotates from the closed position to the open position, the first portion is movable to the downstream side of the passage; wherein the second portion is movable to an upstream side of the channel; and The first part includes a magnetic body of a first magnetic pole, and the second part includes a magnetic body of a second magnetic pole opposite to the first magnetic pole.

18. The on / off valve according to claim 17, wherein: The inner peripheral surface of the valve body defines the passage; A direction in which the valve disc rotates from the closed position to the open position is defined as a second rotation direction; and The valve body includes a stopper protruding from an inner peripheral surface of the valve body to prevent the valve disc from rotating in the second rotation direction from the open position.

19. The on / off valve according to claim 18, wherein: When viewed in the first direction, the stopper is disposed on an imaginary reference line passing through the rotation axis in the second direction.

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