JP2019124240A - Valve device - Google Patents

Abstract

To provide a valve device in which a valve element receiver as a separate member, is disposed on a contact portion of a valve element inside of a valve chamber, of a valve main body, here, the valve element receiver can be stably fixed on a correct position to stabilize a lift amount of a plunger so that operation characteristic and flow characteristic can be stabilized, and the valve element receiver is fixed by brazing while stabilizing brazing so that airtight performance of the valve main body and the valve element receiver is improved.SOLUTION: A solenoid valve 100 includes a valve main body 111, and a valve element receiver 114 disposed inside of a valve chamber 111c as a separate member from the valve main body 111, and provided with a valve port 114a communicated to an outlet port 111b and a valve seat 114c as a contact portion with the valve element 112. The valve element receiver 114 is fixed to the valve main body 111 by brazing, disposed in a manner of being kept into contact with a second joint 102, and formed in a manner that it is not kept into contact with a corner or an edge of the valve element receiver 114 corresponding to a corner or an edge of the valve main body 111.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a valve device such as a solenoid valve used to open and close a flow path.

  A valve device for opening and closing the flow path is put to practical use. As such a valve device, for example, a solenoid valve is conventionally known. The solenoid valve mainly includes, for example, a plunger that moves with the valve body, and an electromagnet that drives the plunger with a magnetic force. In such a solenoid valve, in order to prevent wear due to repeated impactive contact with the valve body, or to reduce collision noise due to contact with the valve body, or processing accuracy of the contact portion with the valve body In some cases, a separate member may be provided at the contact portion with the valve body inside the valve chamber of the valve main body to increase the pressure.

Japanese Patent Application Publication No. 2003-301962

  As an example of the technique which provides a separate member in the contact part with the valve body inside a valve chamber, in patent document 1, a valve body receiver and a valve body holder are similar by providing a valve body receiver which is a separate member inside a valve chamber. There is disclosed a technology in which the impact at the time of contact and contact is reduced. In Patent Document 1, repeated use can be tolerated without deforming the valve seat, and it is supposed that a reliable valve closing action can be maintained even during long-term use of the valve.

  However, in patent document 1, there exists a problem that the method of fixing a valve body receptacle is difficult. For example, since it is necessary to allow the brazing material to penetrate between the valve body receiver and the joint and the valve body, there is a problem that a clearance is required, and the fixing position may be displaced in the radial or axial direction.

  Therefore, an object of the present invention is to provide a separate valve body receiver at the contact portion of the valve body with the valve body inside the valve chamber, and at this time, the valve body receiver can be stably fixed at the correct position. Because the lift amount of the plunger is stabilized by this, the operating characteristics and flow characteristics are stabilized, and further, the valve body holder is fixed by brazing, and at this time, the brazing operation is stabilized, and the valve body and valve body receiver are airtight. It is to provide a valve arrangement whose performance is improved.

  In order to solve the above problems, a valve device according to the present invention is a valve body, and an inlet port connected to a first joint, an outlet port connected to a second joint, and the inlet port and the above A valve body in communication with an outlet port, containing a valve body, and having a valve chamber having a side wall, and disposed inside the valve chamber, is a separate component from the valve body and communicates with the outlet port A valve port and a valve body receiver in which a valve seat which is a contact portion with the valve body is formed, the valve body receiver is fixed to the valve body by brazing, and the second joint is engaged with the second joint. It is characterized in that it is disposed so as to be in contact, and is formed so that the corner or the corner of the valve body receiver opposite to the corner or the corner of the valve body does not abut.

  Further, the valve body receiver may be provided with a press-fit portion for fixing to the valve body.

  Further, the valve body receiver may be provided with a press-fit guide portion having a diameter smaller than that of the press-fit portion on the front side in the insertion direction of the press-fit portion.

  Further, the valve body receiver may be provided with a gap portion communicating with the front and back in the insertion direction of the press-fit portion.

  Further, the clearance may be a spiral groove.

  The valve body receiver may be formed with a coaxial small diameter portion and a large diameter portion.

  Further, the small diameter portion of the valve body receiver may be a press-fit guide portion, and the large diameter portion may be a press-fit portion.

  Further, a press-fit guide portion and a press-fit portion may be formed in the small diameter portion of the valve body receiver.

  Also, a communication groove may be formed from the outlet port side of the bottom surface of the valve body to the outer diameter side on the bottom surface of the valve body or on the contact surface of the valve body receiver facing the bottom surface of the valve body. Good.

  The diameter of the opening to which the second joint is fixed in the valve body may be the same as the diameter of the opening to which the small diameter portion of the valve body receiver is fixed.

  Further, a large diameter portion and a small diameter portion are formed on the inner diameter of the outlet port of the valve body, the boundary is a step, the second joint is fixed to the large diameter portion, and the large diameter portion The valve body receiver and the second joint may be in contact with each other.

  Further, a tapered portion is formed at the valve port of the valve body receiver, and the diameter of the portion where the second joint and the valve body receiver abut is the inner diameter of the second joint and the tapered portion The diameter may be the same diameter, and the diameter may be reduced in the opposite direction so as to communicate with the straight portion of the valve port.

  Further, the valve device may be a solenoid valve.

  According to the present invention, the valve body receiver which is a separate member is provided at the contact portion of the valve main body inside the valve chamber with the valve body, and at this time, the valve body receiver can be stably fixed at the correct position. The operating characteristics and flow characteristics are stabilized in order to stabilize the lift amount of the valve, and furthermore, the valve body holder is fixed by brazing, and at this time, the brazing operation is stabilized, and the airtight performance between the valve body and the valve body receiver is An improved valve device can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the solenoid valve which is 1st Embodiment of the valve apparatus which concerns on this invention. It is sectional drawing which expands and shows the principal part of the valve main-body part of the solenoid valve shown in FIG. It is sectional drawing which shows the principal part of the valve main body of the solenoid valve shown in FIG. It is sectional drawing which shows the principal part of the solenoid valve which is 2nd Embodiment of the valve apparatus which concerns on this invention. It is sectional drawing which shows the principal part of the solenoid valve which is 3rd Embodiment of the valve apparatus which concerns on this invention. Fig. 6 (a) is a front view showing a valve body receiver of a solenoid valve which is a fourth embodiment of the valve device according to the present invention, and Fig. 6 (b) is a VIB- shown in Fig. 6 (a). FIG. 6 (c) is a cross-sectional view taken along the line VIC-VIC shown in FIG. 6 (a). Fig.7 (a) is a front view which shows the modification different from the valve body receptacle shown to Fig.6 (a)-FIG.6 (c), and FIG.7 (b) is shown to Fig.7 (a). 7 (c) is a cross-sectional view taken along the line VIIC-VIIC shown in FIG. 7 (b), and FIG. 7 (d) is a VIID shown in FIG. 7 (a). 7 (e) is a cross-sectional view taken along the line VIID, and FIG. 7 (e) is a cross-sectional view showing still another modified example from the valve body receiver shown in FIG. 7 (d). It is a front view which shows the principal part of the solenoid valve which is 5th Embodiment of the valve apparatus which concerns on this invention. It is a front view which shows the principal part of the solenoid valve which is 6th Embodiment of the valve apparatus which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The upper and lower concepts in the following description correspond to, for example, the upper and lower sides in FIG. 1, and indicate relative positional relationships of respective members, not absolute positional relationships.

  First, a first embodiment of a valve device according to the present invention will be described.

  FIG. 1 is a cross-sectional view showing a solenoid valve 100 which is a first embodiment of a valve device according to the present invention, and FIG. 2 is an enlarged view of a main part of a valve main body 110 of the solenoid valve 100 shown in FIG. FIG. 3 is a cross-sectional view showing the main part of the valve main body 111 of the solenoid valve 100 shown in FIG.

  In FIGS. 1 to 3, the solenoid valve 100 is a normally closed solenoid valve for fluid control. Further, the solenoid valve 100 is disposed on the valve body portion 110, the plunger unit 120 disposed on the upper portion of the valve body portion 110, and the outer periphery of the plunger unit 120, and excites a suction element 123 and the plunger 122 described later. And a coil assembly 130.

  The valve body 110 includes a valve body 111 and a valve body 112.

  The valve body 111 is formed of, for example, a metal material such as stainless steel. The valve body 111 communicates with an inlet port 111a connected to the first joint 101, an outlet port 111b connected to the second joint 102, an inlet port 111a and an outlet port 111b, and a valve body 112 described later. And the plunger 122 is movably accommodated, and the valve chamber 111c comprised from the side wall 111c1 is mainly formed.

  The valve body 112 is spherically formed of, for example, a metal material such as stainless steel, is held in a valve body holder 125 housed in the valve chamber 111c and fixed to the lower end of a plunger 122 described later, and opens and closes a valve port 114a described later .

  The plunger unit 120 includes a plunger tube 121, a plunger 122, a suction element 123, a coil spring 124, a valve body holder 125, and a valve spring 126.

  The plunger tube 121 is, for example, a cylindrical member formed of metal or the like, and is connected to the upper portion of the valve main body 111.

  The plunger 122 is a movable core that can slide up and down in the plunger tube 121. The plunger 122 has a plunger chamber 122a which is an upper opening, a pressure equalizing hole 122b which is an internal longitudinal through hole, a pressure equalizing hole 122c which is an internal horizontal through hole, and a lower portion. A lower end hollow portion 122d which is an opening portion is mainly formed. By forming the pressure equalizing hole 122b in the longitudinal direction and the pressure equalizing hole 122c in the lateral direction in the plunger 122, the plunger chamber 122a and the valve chamber 111c are communicated and pressure equalized.

  The suction element 123 is a fixed core fixed to the upper end of the plunger tube 121. The coil spring 124 is disposed inside the plunger chamber 122 a of the plunger 122, is connected to the plunger 122 and the suction element 123, and is contracted in the direction to close the valve body 112.

  The valve body holder 125 is a substantially cylindrical member fixed to the lower end of the plunger 122, and the lower end portion extends to the inside of the valve chamber 111c, and holds the valve body 112 inside. In the vicinity of the middle stage of the valve body holder 125, a through hole 125a in the lateral direction is formed. As a result, the inside of the valve body holder 125 and the valve chamber 111 c communicate with each other, and the high pressure fluid acts from above the valve body 112 immediately before the valve body 112 contacts the valve seat 114 c described later. The valve seat 114c can be reliably closed by the pressure difference.

  The valve spring 126 is compressed inside the lower end hollow portion 122 d of the plunger 122 and connected to the plunger 122 to bias the valve body 112 downward.

  The electromagnetic coil assembly 130 is wound around a resin bobbin 131 concentrically attached to the plunger tube 121, a coil 132 wound around the bobbin 131 and exciting the plunger 122 and the suction element 123, and a coil 132 wound. It is connected to the casing 133 which covers the bobbin 131 and the bobbin 131 and the coil 132 which are covered with the resin by covering the latter bobbin 131 with resin, the bolt 134 which fixes the casing 133 to the suction element 123, and the coil 132 And a lead wire 135.

  The solenoid valve 100 according to the present embodiment is a normally closed solenoid valve, and in a normal state, the plunger 122 is pushed downward by the biasing force of the coil spring 124 connected to the suction element 123 and is connected to the plunger 122 The valve body 112 is pressed against the valve seat 114c of the valve body 111 by the biasing force of the valve spring 126, and the valve is closed.

  Next, when the coil 132 is energized from the lead wire 135, the suction element 123 and the plunger 122 are excited. As a result, a suction force is generated between the suction element 123 and the plunger 122, and the suction force overcomes the biasing force of the coil spring 124, and the plunger 122 and the valve body holder 125 fixed thereto are held by this. The spherical valve body 112 moves upward.

  When the valve body 112 moves upward, the valve seat 114c is opened, and the solenoid valve 100 is in an open state. As a result, the inflowing fluid is discharged from the first joint 101 through the inlet port 111a, the valve chamber 111c, the valve seat 114c, and the valve port 114a to the second joint 102.

  To switch the solenoid valve 100 from the open state to the closed state, the energization of the coil 132 from the lead wire 135 is shut off, and the aspirator 123 and the plunger 122 are demagnetized. As a result, the adsorption force between the suction element 123 and the plunger 122 disappears, and the plunger 122 and the valve body holder 125 fixed thereto by the biasing force of the coil spring 124 and the spherical valve body 112 held thereby Moves downward and contacts the valve seat 114c, and the solenoid valve 100 is closed.

  In the present embodiment, the valve body holder 125 and the valve spring 126 are provided at the lower end of the plunger 122, but this configuration is a structure that can withstand repeated use without deforming the valve seat 114c. That is, at the time of valve closing, first, the valve body 112 abuts on the valve seat 114c, and then the lower surface of the valve body holder 125 abuts on a valve body receiver 114 described later on the lower surface of the valve chamber 111c. Since the valve state can be maintained, the impact at the time of contact is small, deformation of the valve body 112 and the valve seat 114c is prevented, fluid flow is stopped even during long-term use of the valve, and stable valve seating when the valve is closed To prevent valve leakage. In addition, when the valve is opened, generation of abnormal noise due to passing of the valve body 112 in the valve body holder 125 can be prevented. Such a configuration can withstand repeated use without deforming the valve seat 114c. However, the present invention is not limited to this configuration, and is applicable to a configuration in which the valve body 112 is crimped to the plunger 122 without the valve body holder 125 and the valve spring 126.

  In FIGS. 1 to 3, the valve body 110 of the solenoid valve 100 further includes a valve body receiver 114.

  The valve body receiver 114 is disposed inside the valve chamber 111 c and is a separate component from the valve body 111, and the valve body receiver 114 has a contact portion between the valve port 114 a communicating with the outlet port 111 b and the valve body 112. The valve seat 114c is formed. Here, the valve body receiver 114 is formed of, for example, a metal such as stainless steel.

  As described above, by providing the valve body receiver 114 which is a separate part from the valve body 111, a material with high hardness can be used, so that wear due to repeated repetitive contact with the valve body 112 is prevented. be able to. Further, by using the valve body receiver 114 as a separate part, machining of the valve port 114a, which requires fine machining accuracy, is facilitated, and machining accuracy can be enhanced. In addition, since the material of the valve body receiver 114 can be appropriately selected, a material that can reduce the collision noise due to the contact with the valve body 112 can also be used.

  In the present invention, the valve body receiver 114 is fixed to the valve body 111 by brazing together with the second joint 102. The brazing is performed using a jig and tool with the valve body 111 placed upside down with the outlet port 111b shown in FIG. 2 up. At this time, the valve body receiver 114 and the second joint 102 are fixed from the valve chamber 111 c side, and the brazing material permeates into the gap between the second joint 102 and the outlet port 111 b. Here, since the flange portion 114 b is provided in the valve body receiver 114, it becomes easy to fix the valve body receiver 114 to the valve main body 111.

  In the present invention, at the time of brazing, as shown in FIG. 1 and FIG. 2, the valve body receiver 114 is disposed to abut on the second joint 102, so that the brazing material is securely around the valve body receiver 114. In order to flow in, the valve body receiver 114 can be reliably fixed to the valve body 111. Further, in this case, the diameter of the hole in the valve body 111 to which the second joint 102 is fixed and the diameter of the hole in which the valve body receiver 114 is fixed are the same diameter. Abutment will be reliable. In addition, although it was set as the same diameter here, if it is substantially the same diameter, the same effect can be acquired.

  Further, as shown in FIG. 2, since the undercut 114d is formed on the edge of the valve body receiver 114 that abuts the corner of the valve body 111, processing variations such as burrs occur in the valve body 111 and the valve body receiver 114. Even if there is, it can be fixed without tilting. In addition, since the brazing material penetrated from the outlet port 111b can pass through the undercut 114d, the brazing material can be reliably wound around the outer periphery of the flange portion 114b of the valve body holder 114. Although the undercut 114d is formed in the valve body receiver 114 here, the present invention is not limited to this, and the corner or corner of the valve body receiver 114 opposed to the corner or corner of the valve main body 111 does not abut The shape should just be formed. Further, since the flange portion 114b (large diameter portion) of the valve body support 114 is in contact with the bottom surface of the valve body 111, the load applied to the valve body support 114 can be received by the bottom surface of the valve body 111 when the valve is closed. The load applied to the brazing material can be reduced.

  As shown in FIG. 2, the valve body receiver 114 is further provided with a press-fit portion 114 e at the contact surface between the valve body receiver 114 and the outlet port 111 b. As a result, it is possible to stabilize temporary fixing at the time of brazing, and the valve body receiver 114 can be stably fixed to the correct position of the valve body 111.

  Further, as shown in FIG. 2, the valve body receiver 114 is provided with a press-fit guide portion 114 f having a diameter smaller than that of the press-fit portion 114 e in front of the press-fit portion 114 e in the insertion direction. Thereby, it is possible to prevent the valve body receiver 114 from being skewed and scratched at the time of press-fitting. In the present embodiment, the flange portion 114b constitutes a large diameter portion, and the press-fit portion 114e and the press-fit guide portion 114f constitute a small diameter portion.

  Further, as shown in FIGS. 2 and 3, a spiral groove 111 d is formed in the valve main body 111 at a position corresponding to the press-fit portion 114 e. By forming the spiral groove 111d, the brazing material can be wound around to the back of the press-fit portion 114e, and the air-tightness between the valve body 111 and the valve body receiver 114 is improved. Although the spiral groove 111d is provided here, the present invention is not limited to this, and a gap portion for stabilizing the wax periphery, which is communicated in the front and back of the insertion direction, is provided at a position corresponding to the press-fit portion 114e. If it is done, the same effect can be obtained.

  As described above, according to the first embodiment of the valve device according to the present invention, the valve body receiver, which is a separate member, is provided at the contact portion with the valve body inside the valve chamber of the valve body. Since the body support can be stably fixed at the correct position and the lift amount of the plunger is stabilized, the operating characteristics and the flow characteristics are stabilized, and further, the valve body support is fixed by brazing. It is possible to provide a valve device in which the rotation is stable and the sealing performance between the valve body and the valve body receiver is improved.

  Next, a second embodiment of the valve device according to the present invention will be described.

  FIG. 4 is a cross-sectional view showing the main part of a solenoid valve 200 which is a second embodiment of the valve device according to the present invention.

  In FIG. 4, the solenoid valve 200 differs from the solenoid valve 100 shown in FIGS. 1 to 3 in that a valve body receiver 214 is provided instead of the valve body receiver 114, and the other configuration is the solenoid valve. Same as 100. The same components are denoted by the same reference numerals and the description thereof will be omitted.

  A valve port 214a and a valve seat 214c are formed in the valve body receiver 214. However, unlike the valve body receiver 114, a flange portion, a press-fit portion, a press-fit guide portion and the like are not formed. Such a valve body receiver 214 is fixed to the valve body 211 by brazing, but may be temporarily fixed by press-fitting. Even with the valve body receiver 214 having such a shape, brazing can be performed, and processing of the valve body receiver 214 becomes easy. Also, as in communication grooves 414g, 414Ag, and 414Bg shown in FIGS. 6A to 7E described later, the surface of the valve body receiver 214 that contacts the bottom surface of the valve main body 111 or the bottom surface of the valve main body 111. A communication groove extending in the radial direction may be formed on any of the surfaces.

  As described above, according to the second embodiment of the valve device according to the present invention, the same function and effect as those of the first embodiment can be obtained, and at the same time, the number of manufacturing steps of the valve body receiver can be reduced. Play.

  Next, a third embodiment of the valve device according to the present invention will be described.

  FIG. 5 is a cross-sectional view showing the main part of a solenoid valve 300 which is a third embodiment of the valve device according to the present invention.

  5, the solenoid valve 300 differs from the solenoid valve 100 shown in FIGS. 1 to 3 in that a valve body receiver 314 is provided instead of the valve body receiver 114, and the other configuration is the solenoid valve. Same as 100. The same components are denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 5, in the valve body receiver 314, a press-fit portion 314e and a spiral groove 314g are formed on the outer periphery of the flange portion 314b, and a press-fit guide portion 314f is formed on the small diameter portion. For this reason, it is not necessary to form a spiral groove in the valve main body 311 which is difficult to process, and processing of the groove becomes easy.

  As described above, according to the third embodiment of the valve device of the present invention, it is possible to obtain the same effects as those of the first embodiment, and to reduce the number of manufacturing steps of the valve main body. Play.

  Next, a fourth embodiment of the valve device according to the present invention will be described.

  Fig.6 (a) is a front view which shows the valve body receptacle 414 of the solenoid valve 400 which is 4th Embodiment of the valve apparatus based on this invention, FIG.6 (b) is shown to Fig.6 (a). FIG. 6 (c) is a cross-sectional view taken along the line VIC-VIC shown in FIG. 6 (a).

  The solenoid valve 400 having the valve body receiver 414 shown in FIGS. 6 (a) to 6 (c) has a component other than the valve body receiver 414 compared to the solenoid valve 100 shown in FIGS. 1 to 3. The same components as those in 100 are denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIGS. 6 (a) to 6 (c), a part of the contact surface with the valve main body 111 is cut in the contact surface in the direction of the outlet port 111b of the flange portion 414b of the valve body receiver 414. The communication groove 414g is provided. Here, the communication groove 414g is formed in four semicircular shapes, and since the brazing material can pass through this portion, the brazing material can be reliably turned to the outer periphery of the flange portion 414b of the valve body receiver 414. Here, although the communication groove 414g is formed in the valve body receiver 414, the same effect can be obtained even if the communication groove is formed on the valve body 111 so as to face the above-described contact surface. . Further, the shape of the communication groove 414g is not limited to the shape shown in FIGS. 6 (a) to 6 (c).

  FIG. 7 (a) is a front view showing a modification 414A different from the valve body receptacle shown in FIGS. 6 (a) to 6 (c), and FIG. 7 (b) is a cross sectional view of FIG. 7 (a). 7 (c) is a cross-sectional view taken along the line VIIC-VIIC shown in FIG. 7 (b), and FIG. 7 (d) is a side view of FIG. 7 (a). FIG. 7E is a cross-sectional view taken along the line VIID-VIID shown in FIG. 7, and FIG. 7E is a cross-sectional view showing still another modified example 414 B different from the valve body receiver shown in FIG.

  As shown in FIGS. 7A to 7D, the valve body receiver 414A is provided with a communication groove 414Ag in which one side of the contact surface contacting in the direction of the outlet port 111b of the flange portion 414b is cut in a straight line. Alternatively, as shown in FIG. 7 (e), three communication grooves 414Bg may be provided in the valve body receiver 414B. As described above, the communication groove 414g for stabilizing the periphery of the wax may be provided on the contact surface or the opposite surface of the flange portion 414b of the valve body receiver 414 and the valve main body 111, and the shape is not limited. In the seventh embodiment shown in FIGS. 6 (a) to 7 (e), the clearance of the press-fit portion in the vertical direction shown in FIGS. 6 (a) and 7 (b), that is, in the direction of coming out to the outlet port 111b. The part may be formed.

  As described above, according to the fourth embodiment of the valve device of the present invention, the same function and effect as those of the first embodiment can be obtained, and the brazing material to the outer periphery of the flange portion of the valve body receiver The effect is that it is possible to ensure that the

  Next, a fifth embodiment of the valve device according to the present invention will be described.

  FIG. 8 is a cross-sectional view showing the main part of a solenoid valve 500 which is a fifth embodiment of the valve device according to the present invention.

  8, the solenoid valve 500 differs from the solenoid valve 100 shown in FIGS. 1 to 3 in that a valve main body 511 is provided instead of the valve main body 111, and the other configuration is the solenoid valve 100 and It is the same. The same components are denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 8, here, a large diameter portion and a small diameter portion are formed at the outlet port 511b of the valve main body 511, and the second joint 102 and the valve body receiver 114 abut on the large diameter portion. It is fixed. Since the valve body receiver 114 is fixed to the small diameter portion of the outlet port 511b of the valve main body 511, a spiral groove 511d is formed in the vicinity of the press-fit portion 114e. At this time, by providing the step 511e in the outlet port 511b, it is sufficient to form the spiral groove 511d only in the reduced diameter portion of the step 511e on the valve chamber 511c side, so the processing of the spiral groove 511d becomes easy.

  As described above, according to the fifth embodiment of the valve device of the present invention, the same effects as those of the first embodiment can be obtained, and at the same time, the processing easiness of the valve body is improved. The effect of reducing man-hours is achieved.

  Next, a sixth embodiment of the valve device according to the present invention will be described.

  FIG. 9 is a cross-sectional view showing the main part of a solenoid valve 600 which is a sixth embodiment of the valve device according to the present invention.

  In FIG. 9, the solenoid valve 600 is different from the solenoid valve 100 shown in FIGS. 1 to 3 in that a valve body receiver 614 is provided instead of the valve body receiver 114, and the other configuration is the solenoid valve. Same as 100. The same components are denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 9, a tapered portion 614a1 is formed at the valve port 614a of the valve body receiver 614 here. In the tapered portion 614a1, the diameter of the portion where the second joint 102 and the valve body receiver 614 abut is approximately the same diameter as the inner diameter of the second joint 102, and the diameter is reduced in the opposite direction. Of the small diameter linear portion 614a2 extending in a cylindrical shape. By providing the tapered portion 614a1 in the valve port 614a in this manner, the fillet is less likely to be formed when the brazing material penetrates from the gap between the valve body receiver 614 and the second joint 102, and the brazing of the valve body receiver 614 It is possible to prevent the brazing material from flowing to and accumulating at places where attachment is unnecessary.

  As described above, according to the sixth embodiment of the valve device of the present invention, the same function and effect as those of the first embodiment can be obtained, and at locations where brazing of the valve body reception is unnecessary. The brazing material can be prevented from flowing and accumulating.

  In the above description, the valve device of the present invention has been described by taking the normally closed solenoid valve 100 or the like for fluid control as an example, but the present invention is not limited thereto. Further, as the fluid, gas, liquid or other fluid may be applied. Furthermore, the present invention may be applied to other valve devices having the same configuration, such as a flow control valve, a motor-operated valve, etc. other than the solenoid valve, and the same effect is expected in that case.

  As described above, according to the present invention, the valve body receiver, which is a separate member, is provided at the contact portion of the valve body with the valve body inside the valve chamber, and at this time, the valve body receiver is stabilized at the correct position. It can be fixed, which stabilizes the lift amount of the plunger, so that the operating characteristics and flow characteristics are stabilized, and further, the valve body holder is fixed by brazing, the brazing operation is stabilized at this time, and the airtight performance is improved. Can provide a valve device.

100, 200, 300, 400, 500, 600 Valve device (solenoid valve)
101 first joint 102 second joint 110, 210, 310, 510, 610 valve body 111, 211, 311, 511, 611 valve body 111a, 211a, 311a, 511a, 611a inlet port 111b, 211b, 311b, 511b, 611b Exit port 111c, 211c, 311c, 511c, 611c Valve chamber 111c1, 211c1, 311c1, 511c1, 611c1 Side wall 111d, 314g, 511d, 611d Spiral groove 112 Valve body 114, 214, 314, 414A, 414B, 414B, 614 valve body receivers 114a, 214a, 314a, 414a, 614a valve ports 114b, 314b, 414b, 614b flange portions 114c, 214c, 314c, 414c, 614c valve seats 114d, 214d, 3 4d, 414d, 614d Undercuts 114e, 314e, 414e, 614e Press-fit portions 114f, 314f, 414f, 614f Press-fit guide portions 120 Plunger unit 121 Plunger tube 122 Plunger 122a Plunger chamber 122b Longitudinal pressure equalizing hole 122c Horizontal pressure equalization Bore 122d Lower end hollow portion 123 Suction element 124 Coil spring 125 Valve body holder 125a Through hole 126 Valve spring 130 Electromagnetic coil assembly 131 Bobbin 132 Coil 133 Casing 134 Lead wire 414g, 414Ag, 414Bg Communication groove 511e Step difference 614a1 Tapered portion 614a2 Straight line portion

Claims (13)

The valve body,
Inlet port connected to the first fitting,
An outlet port connected to the second fitting, and
A valve body in communication with the inlet port and the outlet port, containing a valve body, and having a valve chamber having a side wall;
A valve port disposed inside the valve chamber, which is a separate component from the valve body and in communication with the outlet port, and a valve body receiver in which a valve seat which is a contact portion with the valve body is formed; Equipped
The valve body receiver is fixed by brazing to the valve body, and is disposed to abut the second joint, and a corner or corner of the valve body receiver opposite to a corner or corner of the valve body abuts Valve device characterized in that it is configured not to   The valve device according to claim 1, wherein the valve body receiver is provided with a press-fit portion for fixing to the valve body.   The valve device according to claim 2, wherein the valve body receiver is provided with a press-fit guide portion having a diameter smaller than that of the press-fit portion in front of the press-fit portion in the insertion direction.   The valve device according to claim 2, wherein the valve body receiver is provided with a gap portion which communicates in the front and back direction of the insertion direction of the press-fit portion.   The valve device according to claim 4, wherein the gap portion is a spiral groove.   The valve device according to any one of claims 2 to 5, wherein a coaxial small diameter portion and a large diameter portion are formed in the valve body receiver.   The valve device according to claim 6, wherein the small diameter portion of the valve body receiver serves as a press-fit guide portion, and the large diameter portion serves as a press-fit portion.   The valve device according to claim 6, wherein a press-fit guide portion and a press-fit portion are formed in the small diameter portion of the valve body receiver.   A communication groove is formed from the outlet port side of the bottom surface of the valve body to the outer diameter side on the bottom surface of the valve body or on the contact surface of the valve body receiver that directly faces the bottom surface of the valve body. The valve device according to claim 1.   The valve according to claim 6, wherein the diameter of the opening to which the second joint is fixed in the valve body and the diameter of the opening to which the small diameter portion of the valve body receiver is fixed are the same. apparatus.   A large diameter portion and a small diameter portion are formed in the inner diameter of the outlet port of the valve body, the boundary is a step, the second joint is fixed to the large diameter portion, and the valve is large diameter portion The valve device according to claim 1, wherein the body support and the second joint abut. A tapered portion is formed on the valve port of the valve body receiver,
In the tapered portion, the diameter of the portion where the second joint and the valve body receiver abut is the same diameter as the inner diameter of the second joint, and the diameter is reduced in the opposite direction. The valve device according to claim 1, wherein the valve device is formed in a shape communicating with the straight portion.   13. A valve arrangement according to any one of the preceding claims, characterized in that the valve arrangement is a solenoid valve.

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