CN112780780A - Valve device - Google Patents

Valve device Download PDF

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Publication number
CN112780780A
CN112780780A CN202011221523.0A CN202011221523A CN112780780A CN 112780780 A CN112780780 A CN 112780780A CN 202011221523 A CN202011221523 A CN 202011221523A CN 112780780 A CN112780780 A CN 112780780A
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CN
China
Prior art keywords
abutting
valve
valve body
contact surface
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011221523.0A
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Chinese (zh)
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CN112780780B (en
Inventor
高崎准
下户宏纪
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Aisan Industry Co Ltd
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Aisan Industry Co Ltd
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Publication date
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Publication of CN112780780A publication Critical patent/CN112780780A/en
Application granted granted Critical
Publication of CN112780780B publication Critical patent/CN112780780B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

The invention provides a valve device. Provided is a technique for suppressing tensile stress from being generated in a relatively soft contact surface when the relatively soft contact surface is in contact with a relatively hard contact surface in a valve device. The hardness of the outer contact surface may be lower than the hardness of the 1 st contact surface, and the hardness of the inner contact surface may be lower than the hardness of the 2 nd contact surface. The curvature of the outer contact surface at the 1 st contact point, which is the point where the outer contact surface of the outer valve body first contacts when contacting the 1 st contact surface of the valve seat, may be larger than the curvature of the 1 st contact surface at the 1 st contact point. A curvature of the inner abutting surface at a 2 nd abutting point, which is a point at which the 2 nd abutting surface of the inner spool abuts first when the 2 nd abutting surface of the outer spool abuts against the 2 nd abutting surface, is larger than a curvature of the 2 nd abutting surface at the 2 nd abutting point.

Description

Valve device
Technical Field
The technology disclosed herein relates to a valve device.
Background
Patent document 1 discloses a valve device. The valve device of patent document 1 includes a main valve seat, a main valve element abutting against the main valve seat, and a sub valve element disposed on the opposite side of the main valve seat across the main valve element and abutting against the main valve element. The main valve element of patent document 1 is made of brass (made of copper cast alloy).
Patent document 1: japanese patent laid-open publication No. 2019-132347
Disclosure of Invention
Problems to be solved by the invention
In the valve device of patent document 1, when the main valve body abuts against the main valve seat and the sub valve body abuts against the main valve body to sandwich the main valve body between the main valve seat and the sub valve body, compressive stress and tensile stress are generated in the main valve body. In particular, when the hardness of the main valve element is lower than that of the sub valve element, a large compressive stress or tensile stress may be generated in a surface of the main valve element that contacts the main valve seat and the sub valve element.
Since a general object tends to be weak against tensile stress as compared with compressive stress, it is considered that, when a large tensile stress is generated in a surface of the main valve element that is in contact with the main valve seat and the sub valve element, for example, the main valve element is deformed or damaged. Accordingly, the present specification provides a technique that can suppress generation of tensile stress in a relatively soft abutment surface when the relatively soft abutment surface abuts against a relatively hard abutment surface in a valve device.
Means for solving the problems
The valve device disclosed in the present specification may include: a valve seat having a 1 st outlet for discharging fluid; and a valve body that abuts against the valve seat to close the 1 st outflow port. The valve seat may include a 1 st abutment surface facing the spool side. The valve cartridge may include: an outer valve body having a 2 nd outlet port through which the fluid flows out; and an inner valve body disposed on the opposite side of the valve seat with the outer valve body interposed therebetween, the inner valve body abutting against the outer valve body to close the 2 nd outlet port. The inner spool may include a 2 nd abutment surface facing the outer spool side. The outer spool may include: an outer contact surface that contacts the 1 st contact surface of the valve seat when the valve body contacts the valve seat; and an inner abutting surface that abuts the 2 nd abutting surface of the inner spool when the inner spool abuts the outer spool. The hardness of the outer contact surface may be lower than the hardness of the 1 st contact surface. The hardness of the inner contact surface may be lower than the hardness of the 2 nd contact surface. The curvature of the outer contact surface at the 1 st contact point, which is the point where the outer contact surface of the outer valve body first contacts when contacting the 1 st contact surface of the valve seat, may be larger than the curvature of the 1 st contact surface at the 1 st contact point. The curvature of the inner contact surface at a 2 nd contact point, which is a point at which the 2 nd contact surface of the inner spool first contacts when the 2 nd contact surface of the outer spool contacts, may be larger than the curvature of the 2 nd contact surface at the 2 nd contact point.
According to this configuration, since the degree of curvature of the relatively hard 1 st abutment surface is gentler than the degree of curvature of the relatively soft outer abutment surface, when the soft outer abutment surface abuts against the hard 1 st abutment surface, generation of tensile stress in the soft outer abutment surface can be suppressed. Similarly, since the degree of curvature of the relatively hard 2 nd abutment surface is gentler than the degree of curvature of the relatively soft inner abutment surface, when the soft inner abutment surface abuts against the hard 2 nd abutment surface, the generation of tensile stress in the soft inner abutment surface can be suppressed.
The valve device disclosed in the present specification may include: a valve seat having a 1 st outlet for discharging fluid; and a valve body that abuts against the valve seat to close the 1 st outflow port. The valve seat may include a 1 st abutment surface facing the spool side. The valve cartridge may include: an outer valve body having a 2 nd outlet port through which the fluid flows out; and an inner valve body disposed on the opposite side of the valve seat with the outer valve body interposed therebetween, the inner valve body abutting against the outer valve body to close the 2 nd outlet port. The inner spool may include a 2 nd abutment surface facing the outer spool side. The outer spool may include: an outer contact surface that contacts the 1 st contact surface of the valve seat when the valve body contacts the valve seat; and an inner abutting surface that abuts the 2 nd abutting surface of the inner spool when the inner spool abuts the outer spool. The hardness of the 1 st abutment surface may be lower than the hardness of the outer abutment surface. The hardness of the 2 nd abutment surface may be lower than the hardness of the inner abutment surface. The curvature of the 1 st abutment surface at the 1 st abutment point, which is the point at which the outer abutment surface of the outer spool first abuts when abutting against the 1 st abutment surface of the valve seat, may be larger than the curvature of the outer abutment surface at the 1 st abutment point. The curvature of the 2 nd abutment surface at the 2 nd abutment point, which is the point at which the 2 nd abutment surface of the inner spool first abuts when the 2 nd abutment surface abuts against the inner abutment surface of the outer spool, may be larger than the curvature of the inner abutment surface at the 2 nd abutment point.
According to this configuration, as described above, the tensile stress can be suppressed from being generated on the relatively soft 1 st contact surface and the relatively soft 2 nd contact surface.
An intersection point of a 1 st normal line, which is a normal line of the outer contact surface at the 1 st contact point, and a 2 nd normal line, which is a normal line of the inner contact surface at the 2 nd contact point, may be located inside the outer spool.
According to this configuration, the force acting on the outer spool from the valve seat and the force acting on the outer spool from the inner spool act toward the inside of the outer spool with good balance, and therefore, a part of the outer spool can be suppressed from being locally deformed or damaged.
A distance from the 1 st contact point to the intersection may be equal to a distance from the 2 nd contact point to the intersection.
According to this configuration, since the force balance is favorably applied to the outer valve body, a part of the outer valve body can be suppressed from being locally deformed or damaged.
A straight line connecting the 1 st contact point and the 2 nd contact point may be located closer to the 1 st flow outlet side than the intersection point.
With this configuration, deformation of the outer spool can be suppressed.
A straight line connecting the 1 st contact point and the 2 nd contact point may be aligned with the 1 st normal line and the 2 nd normal line.
According to this configuration, since the force balance is favorably applied to the outer valve body, a part of the outer valve body can be suppressed from being locally deformed or damaged.
When a cross section parallel to the axial direction of the valve body is viewed, the 1 st abutment surface may be formed in a planar shape. When a cross section parallel to the axial direction of the valve body is viewed, the 2 nd contact surface may be formed in a planar shape.
According to this configuration, the generation of tensile stress in the outer contact surface that contacts the 1 st contact surface can be suppressed. Further, the generation of tensile stress at the inner contact surface that contacts the 2 nd contact surface can be suppressed. That is, the tensile stress generated in the outer valve body by the driving of the valve device can be effectively suppressed.
The 1 st contact surface and the 2 nd contact surface may be made of metal. The outer contact surface and the inner contact surface may be made of resin.
According to this configuration, it is possible to suppress the occurrence of tensile stress on the outer contact surface and the inner contact surface made of relatively soft resin.
Drawings
Fig. 1 is a sectional view of a valve device according to an embodiment.
Fig. 2 is an enlarged view of a portion II of fig. 1 (hatching is omitted in fig. 2).
Fig. 3 is a view corresponding to fig. 2 of a valve device according to another embodiment.
Description of the reference numerals
1. A valve device; 2. a main body; 10. a valve seat; 11. 1 st valve chamber; 13. a 1 st abutting surface; 14. a 1 st outflow opening; 20. a valve core; 30. an inner valve core; 33. a tip portion; 34. a 2 nd abutting surface; 35. a spring chamber; 40. an outer valve core; 43. a 2 nd valve chamber; 44. a 2 nd outflow opening; 50. a small coil spring; 61. an outer abutting surface; 62. an inner abutting surface; 71. 1 st abutting point; 72. the 2 nd abutting point; 90. a pressure regulating chamber; 100. a piston; 102. a large coil spring.
Detailed Description
A valve device 1 according to an embodiment will be described with reference to the drawings. As shown in fig. 1, a valve device 1 according to the embodiment includes a main body 2 and a valve body 20. The valve device 1 has a two-stage valve structure in which the valve body 20 includes an inner valve body 30 and an outer valve body 40. The valve device 1 is a device that controls the flow of liquid or gaseous fuel (an example of a fluid). The valve device 1 is, for example, a pressure reducing valve device for reducing the pressure of the fuel. The fuel in the valve device 1 is, for example, fuel for automobiles (e.g., gasoline, hydrogen gas, etc.).
The main body 2 of the valve device 1 includes a peripheral wall 12 and a valve seat 10. The body 2 is made of metal (e.g., an alloy). A 1 st valve chamber 11 is formed inside the main body 2. The fuel flows into the 1 st valve chamber 11 from the upstream side (lower side in fig. 1) of the main body 2. The peripheral wall 12 of the main body 2 is formed in a substantially cylindrical shape. The peripheral wall 12 extends from the upstream side to the downstream side of the main body 2. The peripheral wall 12 is located around the 1 st valve chamber 11 and surrounds the 1 st valve chamber 11. A valve body 20 is disposed in the 1 st valve chamber 11.
The valve seat 10 of the main body 2 is located downstream of the peripheral wall 12. The valve seat 10 is integrally formed with the peripheral wall 12. A 1 st outlet 14 through which fuel flows out is formed in the valve seat 10. The fuel that has flowed into the 1 st valve chamber 11 flows out from the 1 st outflow port 14 to the pressure adjusting chamber 90. The pressure adjusting chamber 90 is located downstream of the 1 st valve chamber 11. The pressure adjusting chamber 90 is connected to a fuel supply destination (not shown) via a fuel supply passage 91, for example. The fuel flowing out from the pressure adjusting chamber 90 is supplied to a fuel supply destination (for example, an engine of an automobile or a fuel cell stack) through a fuel supply passage 91.
The valve seat 10 includes an inner protrusion 15 and a 1 st abutment surface 13. The inner protrusion 15 protrudes inward in the radial direction of the valve seat 10. A 1 st outflow port 14 is formed inside the inner convex portion 15. The 1 st abutment surface 13 is located around the 1 st outflow port 14. The 1 st abutment surface 13 extends from the 1 st outflow port 14 to the inner peripheral surface 121 of the peripheral wall 12. The 1 st contact surface 13 is formed in a substantially conical surface shape. In the cross section shown in fig. 1 (a cross section parallel to the axial direction of the valve body 20), the 1 st abutment surface 13 is configured to be planar. The 1 st abutment surface 13 faces the 1 st valve chamber 11 side. The 1 st abutment surface 13 faces the valve body 20 disposed in the 1 st valve chamber 11. The 1 st abutment surface 13 is inclined with respect to the axial direction of the spool 20. The 1 st abutment surface 13 faces the spool 20. The valve body 20 abuts on the 1 st abutment surface 13.
Next, the valve body 20 will be described. The valve body 20 is disposed upstream of the valve seat 10. The valve element 20 advances and retreats in the axial direction, thereby abutting and separating with respect to the 1 st abutment surface 13 of the valve seat 10. The valve body 20 opens and closes the 1 st outflow port 14 formed in the valve seat 10 by abutting and separating with respect to the valve seat 10. When the valve body 20 abuts on the valve seat 10, the 1 st outlet port 14 is closed. The 1 st outflow port 14 is opened by separating the valve body 20 from the valve seat 10.
The valve spool 20 includes an inner valve spool 30 and an outer valve spool 40. The inner spool 30 is disposed radially inward of the outer spool 40 in the valve body 20. The inner valve body 30 is disposed on the opposite side of the valve seat 10 via the outer valve body 40. The inner valve body 30 includes a peripheral wall 32, a valve portion 31, and a tip portion 33. The inner core 30 is made of metal (e.g., alloy). A spring chamber 35 is formed inside the inner spool 30. A small coil spring 50 is disposed in the spring chamber 35. The small coil spring 50 extends and contracts in the axial direction of the valve body 20. The small coil spring 50 presses the valve body 20 (the inner valve body 30 and the outer valve body 40) from the upstream side toward the downstream side. The peripheral wall 32 of the inner valve body 30 is formed in a substantially cylindrical shape. The peripheral wall 32 extends in the axial direction of the valve element 20. The peripheral wall 32 is located around the spring chamber 35 and surrounds the spring chamber 35.
The valve portion 31 of the inner valve body 30 is located on the downstream side of the peripheral wall 32. The valve portion 31 is integrally formed with the peripheral wall 32. The valve portion 31 includes a 2 nd abutment surface 34 made of metal. The 2 nd contact surface 34 is formed in a substantially conical surface shape. In the cross section shown in fig. 1 (a cross section parallel to the axial direction of the valve body 20), the 2 nd abutment surface 34 is configured to be planar. The 2 nd abutment surface 34 is inclined with respect to the axial direction of the spool 20. The 2 nd abutment surface 34 faces the outer spool 40 side. The 2 nd abutment surface 34 faces the outer spool 40. The 2 nd abutment surface 34 abuts the outer spool 40. The 2 nd contact surface 34 faces the 1 st contact surface 13 of the valve seat 10 via the outer valve body 40.
The distal end portion 33 of the inner core 30 is located downstream of the valve portion 31. The distal end portion 33 is integrally formed with the valve portion 31. The tip portion 33 protrudes from the valve portion 31 toward the 1 st outflow port 14 of the valve seat 10. The tip 33 is inserted into the 1 st spout 14.
Next, the outer valve body 40 will be described. The outer valve body 40 is disposed outward of the inner valve body 30 in the radial direction of the valve body 20. The outer valve spool 40 surrounds the inner valve spool 30. The outer valve body 40 is disposed between the inner valve body 30 and the valve seat 10. The outer valve body 40 is sandwiched between the inner valve body 30 and the valve seat 10 in the valve-closed state of the valve device 1.
The outer valve body 40 includes a peripheral wall 42, a base 45, and a valve portion 41. The outer valve body 40 is made of resin (e.g., silicone rubber, synthetic rubber, etc.). A 2 nd valve chamber 43 is formed inside the outer valve body 40. The fuel flows into the 2 nd valve chamber 43 from the upstream side (lower side in fig. 1) of the main body 2. The inner valve body 30 is disposed in the 2 nd valve chamber 43.
The peripheral wall 42 of the outer valve body 40 is formed in a substantially cylindrical shape. The peripheral wall 42 extends in the axial direction of the valve element 20. The peripheral wall 42 is located around the 2 nd valve chamber 43 and surrounds the 2 nd valve chamber 43. The base 45 is formed in a substantially annular shape. The base 45 is integrally formed with the peripheral wall 42. The base 45 is fixed to an upstream end of the peripheral wall 42 in the axial direction. The base 45 protrudes inward in the radial direction of the peripheral wall 42.
The valve portion 41 of the outer valve body 40 is located downstream of the peripheral wall 42. The valve portion 41 is integrally formed with the peripheral wall 42. A 2 nd outlet 44 through which the fuel flows out is formed in the valve portion 41. The 2 nd outflow port 44 communicates with the 1 st outflow port 14 formed in the valve seat 10. The fuel flows out from the 2 nd valve chamber 43 to the surge chamber 90 through the 2 nd flow outlet 44 and the 1 st flow outlet 14. The tip 33 of the inner spool 30 is inserted into the 2 nd outlet 44. The inner spool 30 advances and retreats with respect to the outer spool 40, thereby opening and closing the 2 nd flow outlet 44. When the inner spool 30 abuts the outer spool 40, the 2 nd outlet port 44 is closed. When the inner spool 30 is separated from the outer spool 40, the 2 nd outlet port 44 is opened.
The valve portion 41 includes a resin outer contact surface 61 and a resin inner contact surface 62. The outer abutment surface 61 is located around the 2 nd outflow port 44. The outer abutment surface 61 faces the valve seat 10 side. The outer abutment surface 61 faces the 1 st abutment surface 13 of the valve seat 10. The outer contact surface 61 is formed as a convex curved surface. The outer abutment surface 61 protrudes toward the 1 st abutment surface 13 of the valve seat 10. The outer contact surface 61 contacts the 1 st contact surface 13 when the outer spool 40 advances relative to the valve seat 10. The outer abutment surface 61 is pressed against the 1 st abutment surface 13. The hardness of the outer contact surface 61 is lower than that of the 1 st contact surface 13. The hardness of each of the contact surfaces 13 and 61 can be measured by various hardness tests specified in JIS, for example.
As shown in fig. 2, if the point at which the outer contact surface 61 of the outer valve body 40 first contacts the 1 st contact surface 13 of the valve seat 10 is defined as the 1 st contact point 71, the curvature of the outer contact surface 61 at the 1 st contact point 71 is larger than the curvature of the 1 st contact surface 13 at the 1 st contact point 71. That is, the degree of curvature of the outer contact surface 61 becomes steeper than the degree of curvature of the 1 st contact surface 13 (the degree of curvature of the 1 st contact surface 13 becomes gentler than the degree of curvature of the outer contact surface 61).
The inner abutment surface 62 of the outer valve spool 40 is explained. As shown in fig. 1, the inner abutment surface 62 faces the inner spool 30 side. The inner abutment surface 62 faces the 2 nd abutment surface 34 of the inner spool 30. The inner contact surface 62 is formed as a convex curved surface. The inner abutment surface 62 protrudes toward the 2 nd abutment surface 34 of the inner spool 30. The inner abutment surface 62 abuts the 2 nd abutment surface 34 when the inner spool 30 advances relative to the outer spool 40. The inner abutment surface 62 is pressed against the 2 nd abutment surface 34. The inner abutment surface 62 is located on the upstream side of the 2 nd flow outlet 44. The hardness of the inner abutment surface 62 is lower than the hardness of the 2 nd abutment surface 34. The hardness of each of the contact surfaces 34 and 62 can be measured by various hardness tests specified in JIS, for example.
As shown in fig. 2, if the point at which the inner contact surface 62 of the outer valve body 40 first contacts the 2 nd contact surface 34 of the inner valve body 30 is defined as the 2 nd contact point 72, the curvature of the inner contact surface 62 at the 2 nd contact point 72 is larger than the curvature of the 2 nd contact surface 34 at the 2 nd contact point 72. That is, the degree of curvature of the inner contact surface 62 becomes steeper than the degree of curvature of the 2 nd contact surface 34 (the degree of curvature of the 2 nd contact surface 34 becomes gentler than the degree of curvature of the inner contact surface 62).
The geometrical relationship between the outer abutment surface 61 and the inner abutment surface 62 of the outer valve spool 40 is explained. As shown in fig. 2, when the normal line of the outer contact surface 61 at the 1 st contact point 71 is defined as the 1 st normal line N1 and the normal line of the inner contact surface 62 at the 2 nd contact point 72 is defined as the 2 nd normal line N2, the intersection X of the 1 st normal line N1 and the 2 nd normal line N2 is located inside the outer valve body 40. The distance L1 from the 1 st contact point 71 to the intersection point X is equal to the distance L2 from the 2 nd contact point 72 to the intersection point X. The straight line M connecting the 1 st contact point 71 and the 2 nd contact point 72 is located closer to the 1 st outflow port 14 than the intersection X of the 1 st normal line N1 and the 2 nd normal line N2.
As shown in fig. 1, the valve device 1 further includes a piston 100 and a large coil spring 102. The piston 100 is configured to be movable in the vertical direction in fig. 1. The piston 100 is urged toward the valve body 20 by a large coil spring 102. The piston 100 includes a tip end portion 101 that protrudes toward the tip end portion 33 of the inner spool 30.
Next, the operation of the valve device 1 will be described. First, the valve device 1 is set in a closed state. That is, the valve body 20 abuts on the valve seat 10, and the 1 st outlet port 14 is closed. The inner valve body 30 is in contact with the outer valve body 40, and the 2 nd outlet port 44 is closed. In the valve-closed state, the pressure of the fuel in the pressure adjusting chamber 90 is maintained in a relatively high state.
(valve opening action)
In the valve device 1, when fuel is supplied to a fuel supply destination and the fuel flows out from the pressure adjusting chamber 90, the pressure of the fuel in the pressure adjusting chamber 90 is lowered. Then, the piston 100 receiving the pressure of the fuel in the pressure adjusting chamber 90 is pressed toward the valve body 20 by the large coil spring 102, and the piston 100 moves toward the valve body 20. When the pressure of the fuel in the pressure adjusting chamber 90 is largely lowered, the piston 100 is largely moved toward the valve body 20 along with this. On the other hand, when the amount of decrease in the pressure of the fuel in the pressure adjusting chamber 90 is small, the amount of movement of the piston 100 toward the valve body 20 is also small.
As the piston 100 moves toward the valve body 20, the tip end 101 of the piston 100 abuts against the tip end 33 of the inner valve body 30 to press the inner valve body 30 toward the upstream side. Thereby, the inner spool 30 moves to the upstream side. When the piston 100 moves to a large extent toward the valve body 20, the inner valve body 30 moves to a large extent toward the upstream side. On the other hand, when the amount of movement of the piston 100 toward the valve body 20 is small, the amount of movement of the inner valve body 30 toward the upstream side is also small.
As the inner spool 30 moves upstream, the 2 nd abutment surface 34 of the inner spool 30 separates from the inner abutment surface 62 of the outer spool 40 and the 2 nd outlet port 44 is opened. When the 2 nd outlet port 44 is opened, the fuel flows out from the 2 nd valve chamber 43 to the pressure adjusting chamber 90 via the 2 nd outlet port 44. This state is the 1 st open valve state. When the pressure of the fuel in the pressure adjusting chamber 90 is high, the 1 st valve-opening state is set.
As the inner valve body 30 moves further upstream from the 1 st open valve state, the peripheral wall 32 of the inner valve body 30 abuts against the base portion 45 of the outer valve body 40 to press the base portion 45 upstream. Then, the outer spool 40 moves to the upstream side. As the outer valve body 40 moves upstream, the outer contact surface 61 of the outer valve body 40 separates from the 1 st contact surface 13 of the valve seat 10, and the 1 st outflow port 14 is opened. When the 1 st outflow port 14 is opened, the fuel flows out from the 1 st valve chamber 11 to the pressure adjusting chamber 90 via the 1 st outflow port 14. This state is the 2 nd open valve state. When the pressure of the fuel in the pressure adjusting chamber 90 is low, the 2 nd valve-opening state is set.
(valve closing action)
Next, the valve closing operation will be described. The valve closing operation is an operation opposite to the valve opening operation described above. In the valve device 1 described above, when the fuel flows into the pressure adjusting chamber 90, the pressure of the fuel in the pressure adjusting chamber 90 rises. Then, the piston 100 is pressed to the side opposite to the valve body 20 by the pressure of the fuel in the pressure adjusting chamber 90, and the piston 100 moves to the side opposite to the valve body 20 (i.e., the downstream side). As the piston 100 moves downstream, the inner spool 30 moves downstream.
As the inner spool 30 moves toward the downstream side, the 2 nd abutment surface 34 of the inner spool 30 abuts against the inner abutment surface 62 of the outer spool 40 and the 2 nd outlet port 44 is in a closed state. As the inner spool 30 moves further to the downstream side, the outer spool 40 is pushed to the downstream side by the inner spool 30, and the inner spool 30 and the outer spool 40 move to the downstream side. As the inner spool 30 and the outer spool 40 move downstream, the outer contact surface 61 of the outer spool 40 contacts the 1 st contact surface 13 of the valve seat 10 and the 1 st outflow port 14 is in a closed state.
In the valve device 1 described above, the outer valve body 40 is sandwiched between the inner valve body 30 and the valve seat 10 in the valve closed state. The outer valve core 40 is pressed by the inner valve core 30 and the valve seat 10. When the outer valve core 40 is pressed by the inner valve core 30 and the valve seat 10, a compressive stress is mainly generated inside the outer valve core 40.
[ Effect ]
The valve device 1 according to the embodiment is explained above. As is clear from the above description, in the valve device 1, the outer valve body 40 includes the resin outer contact surface 61 that contacts the metal 1 st contact surface 13 of the valve seat 10, and the resin inner contact surface 62 that contacts the metal 2 nd contact surface 34 of the inner valve body 30. The hardness of the outer contact surface 61 is lower than that of the 1 st contact surface 13, and the hardness of the inner contact surface 62 is lower than that of the 2 nd contact surface 34. In this valve device 1, the curvature of the outer contact surface 61 at the 1 st contact point 71, which is the point at which the outer contact surface 61 of the outer valve body 40 first contacts when contacting the 1 st contact surface 13 of the valve seat 10, is larger than the curvature of the 1 st contact surface 13 at the 1 st contact point 71. Further, the curvature of the inner contact surface 62 at the 2 nd contact point 72, which is the point at which the 2 nd contact surface 34 of the inner valve body 30 first contacts when contacting the inner contact surface 62 of the outer valve body 40, is larger than the curvature of the 2 nd contact surface 34 at the 2 nd contact point 72.
According to this configuration, since the degree of curvature of the relatively hard metal-made 1 st contact surface 13 is gentler than the degree of curvature of the relatively soft resin-made outer contact surface 61, when the outer contact surface 61 comes into contact with the 1 st contact surface 13, it is possible to suppress the generation of tensile stress in the soft resin-made outer contact surface 61. Since the first 1 st contact surface 13 made of a hard metal does not come into contact with the outer contact surface 61 made of a soft resin so as to protrude therefrom, it is possible to suppress the occurrence of tensile stress in the outer contact surface 61 made of a soft resin. Similarly, since the degree of curvature of the relatively hard metal 2 nd abutment surface 34 is gentler than the degree of curvature of the relatively soft resin inner abutment surface 62, when the inner abutment surface 62 abuts against the 2 nd abutment surface 34, it is possible to suppress the generation of tensile stress in the soft resin inner abutment surface 62. Since the hard metal 2 nd abutment surface 34 does not abut against the soft resin inner abutment surface 62 so as to protrude therefrom, it is possible to suppress the tensile stress from being generated in the soft resin inner abutment surface 62.
The object has a tendency to be weaker against tensile stress compared to compressive stress. By suppressing the tensile stress from being generated in the relatively soft resin outer contact surface 61 and the relatively soft resin inner contact surface 62, the resin outer contact surface 61 and the resin inner contact surface 62 can be suppressed from being deformed or damaged. This can increase the strength of the outer valve body 40 including the resin outer contact surface 61 and the resin inner contact surface 62, and can increase the strength of the valve device 1.
In order to seal the 1 st outlet port 14 and the 2 nd outlet port 44 when the valve device 1 is in the closed state, the outer contact surface 61 and the inner contact surface 62 of the outer valve body 40 are preferably made of resin. However, a relatively soft resin may be deformed or damaged when tensile stress is generated, as compared to a relatively hard metal. In other words, since the outer valve body 40 is sandwiched between the valve seat 10 and the inner valve body 30, a large tensile stress is generated in the resin outer contact surface 61 and the resin inner contact surface 62, and the outer valve body 40 may be deformed or damaged. Therefore, the above-described valve device 1 capable of suppressing the occurrence of tensile stress on the outer contact surface 61 and the inner contact surface 62 is particularly effective.
In the valve device 1 described above, the intersection X of the 1 st normal line N1 of the outer contact surface 61 at the 1 st contact point 71 and the 2 nd normal line N2 of the inner contact surface 62 at the 2 nd contact point 72 is located inside the outer spool 40. According to this structure, a force acts with good balance from the valve seat 10 and the inner valve body 30 toward the inside of the outer valve body 40. Therefore, a part of the outer valve body 40 can be suppressed from being locally deformed or damaged.
In the valve device 1 described above, the distance L1 from the 1 st contact point 71 to the intersection point X is equal to the distance L2 from the 2 nd contact point 72 to the intersection point X. According to this configuration, since a force acts on the outer valve body 40 in a well-balanced manner, a part of the outer valve body 40 can be suppressed from being locally deformed or damaged.
In the valve device 1 described above, the straight line M connecting the 1 st contact point 71 and the 2 nd contact point 72 is located closer to the 1 st outflow port 14 than the intersection X of the 1 st normal line N1 and the 2 nd normal line N2. With this structure, deformation of the outer valve body 40 can be suppressed.
In the valve device 1 described above, the 1 st contact surface 13 is configured in a planar shape. The 2 nd contact surface 34 is formed in a planar shape. The occurrence of tensile stress in the resin outer contact surface 61 that is in contact with the 1 st contact surface 13 can be suppressed. Further, it is possible to suppress the generation of tensile stress in the resin inner contact surface 62 that is in contact with the 2 nd contact surface 34. That is, the tensile stress generated in the outer valve body 40 by the driving of the valve device 1 can be effectively suppressed.
Although the embodiment has been described above, the specific form is not limited to the embodiment. In the following description, the same components as those in the above description are denoted by the same reference numerals, and description thereof is omitted.
(other embodiments)
(1) In the above-described embodiment, the straight line M connecting the 1 st contact point 71 and the 2 nd contact point 72 extends in a direction different from the 1 st normal line N1 and the 2 nd normal line N2, but the present invention is not limited to this configuration. In other embodiments, the straight line M connecting the 1 st abutting point 71 and the 2 nd abutting point 72 may be on the same straight line with the 1 st normal line N1 and the 2 nd normal line N2. According to this structure, since a force acts on the outer valve body 40 from the valve seat 10 and the inner valve body 30 in a well-balanced manner, a part of the outer valve body 40 can be suppressed from being locally deformed or damaged.
(2) In the above-described embodiment, the 1 st abutment surface 13 of the valve seat 10 is formed in a planar shape when viewed in a cross section parallel to the axial direction of the valve body 20, but the present invention is not limited to this configuration. In another embodiment, the 1 st contact surface 13 of the valve seat 10 may be formed in a curved surface shape when viewed in the same cross section. In the same cross section, the 1 st abutment surface 13 of the valve seat 10 may be formed in a convex shape or a concave shape.
In the present specification, as for the curvature of the 1 st abutment surface 13 of the valve seat 10, the curvature of the convex surface is used when the 1 st abutment surface 13 is a convex surface. In addition, when the 1 st contact surface 13 is a concave surface, the curvature of the concave surface is defined. In either case, the curvature of the 1 st abutment surface 13 of the valve seat 10 is smaller than the curvature of the outer abutment surface 61 of the outer valve body 40 (the curvature of the outer abutment surface 61 is larger than the curvature of the 1 st abutment surface 13). In addition, when the 1 st contact surface 13 is a flat surface, it is needless to say that the curvature of the 1 st contact surface 13 is smaller than the curvature of the outer contact surface 61 (the curvature of the outer contact surface 61 is larger than the curvature of the 1 st contact surface 13). That is, the degree of curvature of the 1 st abutment surface 13 is gentler than the degree of curvature of the outer abutment surface 61 (the degree of curvature of the outer abutment surface 61 is steeper than the degree of curvature of the 1 st abutment surface 13).
(3) In the above-described embodiment, the 2 nd abutment surface 34 of the inner spool 30 is formed in a planar shape when viewed in a cross section parallel to the axial direction of the spool 20, but the present invention is not limited to this configuration. In another embodiment, the 2 nd abutment surface 34 of the inner spool 30 may be formed in a curved surface shape when viewed in the same cross section. In the same cross section, the 2 nd abutment surface 34 of the inner spool 30 may be formed in a convex shape or a concave shape.
In the present description, as for the curvature of the 2 nd abutment surface 34 of the inner spool 30, the curvature of the convex surface is given when the 2 nd abutment surface 34 is a convex surface. In addition, when the 2 nd contact surface 34 is a concave surface, the curvature of the concave surface is defined. In either case, the curvature of the 2 nd abutment surface 34 of the inner spool 30 is smaller than the curvature of the inner abutment surface 62 of the outer spool 40 (the curvature of the inner abutment surface 62 is larger than the curvature of the 2 nd abutment surface 34). In addition, when the 2 nd contact surface 34 is a flat surface, it is needless to say that the curvature of the 2 nd contact surface 34 is smaller than the curvature of the inner contact surface 62 (the curvature of the inner contact surface 62 is larger than the curvature of the 2 nd contact surface 34). That is, the degree of curvature of the 2 nd contact surface 34 is gentler than the degree of curvature of the inner contact surface 62 (the degree of curvature of the inner contact surface 62 is steeper than the degree of curvature of the 2 nd contact surface 34).
(4) In other embodiments, portions of the outer valve core 40 may be constructed of metal. For example, the inside of the outer valve body 40 may be made of metal, and a portion outside the portion (a portion including the outer contact surface 61 and the inner contact surface 62) may be made of resin.
(5) In other embodiments, the distance L1 from the 1 st abutment point 71 to the intersection point X and the distance L2 from the 2 nd abutment point 72 to the intersection point X may be different distances.
(6) In the above embodiment, the intersection X of the 1 st normal line N1 and the 2 nd normal line N2 is located inside the outer valve body 40, but the present invention is not limited to this configuration. In other embodiments, the intersection X of the 1 st normal N1 and the 2 nd normal N2 may be located outside the outer spool 40.
(7) In the above embodiment, the straight line M connecting the 1 st contact point 71 and the 2 nd contact point 72 is positioned on the 1 st outflow port 14 side with respect to the intersection X of the 1 st normal line N1 and the 2 nd normal line N2, but the present invention is not limited to this configuration. In another embodiment, the straight line M connecting the 1 st contact point 71 and the 2 nd contact point 72 may be positioned on the opposite side of the intersection X of the 1 st normal line N1 and the 2 nd normal line N2 from the 1 st outflow port 14. That is, the intersection X may be located closer to the 1 st outflow port 14 than the straight line M.
(8) In the above embodiment, the 1 st contact surface 13 of the valve seat 10 and the 2 nd contact surface 34 of the inner valve body 30 are made of metal, but the present invention is not limited to this configuration. In another embodiment, the 1 st contact surface 13 and the 2 nd contact surface 34 may be made of resin. In this case, the curvature of the abutment surface having relatively low hardness may be larger than the curvature of the abutment surface having relatively high hardness. For example, the relationship between the 1 st abutment surface 13 of the valve seat 10 and the outer abutment surface 61 of the outer valve body 40 is as follows: the hardness of the outer contact surface 61 is lower than the hardness of the 1 st contact surface 13 and the curvature of the outer contact surface 61 is greater than the curvature of the 1 st contact surface 13. For example, the 1 st contact surface 13 shown in fig. 2 may be made of a resin having a relatively high hardness, and the outer contact surface 61 may be made of a resin having a relatively low hardness. Further, the relationship between the 2 nd abutment surface 34 of the inner spool 30 and the inner abutment surface 62 of the outer spool 40 is as follows: the hardness of the inner abutment surface 62 is lower than the hardness of the 2 nd abutment surface 34 and the curvature of the inner abutment surface 62 is greater than the curvature of the 2 nd abutment surface 34. For example, the 2 nd contact surface 34 shown in fig. 2 may be made of a resin having a relatively high hardness, and the inner contact surface 62 may be made of a resin having a relatively low hardness.
(9) In the above-described embodiment, the outer contact surface 61 and the inner contact surface 62 of the outer valve body 40 are made of resin, but the configuration is not limited thereto. In other embodiments, the outer contact surface 61 and the inner contact surface 62 may be made of metal. In this case, too, the curvature of the contact surface having relatively low hardness may be larger than the curvature of the contact surface having relatively high hardness. For example, the 1 st contact surface 13 shown in fig. 2 may be made of a metal having relatively high hardness, and the outer contact surface 61 may be made of a metal having relatively low hardness. For example, the 2 nd contact surface 34 shown in fig. 2 may be made of a metal having relatively high hardness, and the inner contact surface 62 may be made of a metal having relatively low hardness.
(10) In the above embodiment, the hardness of the outer contact surface 61 of the outer valve body 40 is lower than the hardness of the 1 st contact surface 13 of the valve seat 10, and the curvature of the outer contact surface 61 is larger than the curvature of the 1 st contact surface 13, but the present invention is not limited to this configuration. In another embodiment, contrary to the above-described embodiment, the hardness of the 1 st abutment surface 13 of the valve seat 10 may be lower than the hardness of the outer abutment surface 61 of the outer valve body 40. For example, the 1 st contact surface 13 may be made of resin, and the outer contact surface 61 may be made of metal harder than resin. In this case, as shown in fig. 3, the curvature of the 1 st abutment surface 13 is set larger than the curvature of the outer abutment surface 61. The following relationship is set: the curvature of the abutment surface of relatively low hardness is greater than the curvature of the abutment surface of relatively high hardness.
In the above embodiment, the hardness of the inner contact surface 62 of the outer valve body 40 is lower than the hardness of the 2 nd contact surface 34 of the inner valve body 30, and the curvature of the inner contact surface 62 is larger than the curvature of the 2 nd contact surface 34. In other embodiments, the hardness of the 2 nd abutment surface 34 of the inner spool 30 may be lower than the hardness of the inner abutment surface 62 of the outer spool 40, as opposed to the embodiments described above. For example, the 2 nd contact surface 34 may be made of resin, and the inner contact surface 62 may be made of metal harder than resin. In this case, as shown in fig. 3, the curvature of the 2 nd abutment surface 34 is set larger than the curvature of the inner abutment surface 62. The following relationship is set: the curvature of the abutment surface of relatively low hardness is greater than the curvature of the abutment surface of relatively high hardness. With this configuration, the occurrence of tensile stress on the relatively soft contact surface can be suppressed.
Specific examples of the present invention have been described above in detail, but these are merely examples and do not limit the claims. The techniques recited in the claims include various modifications and changes to the specific examples illustrated above. The technical elements described in the specification and drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques shown in the present specification and the drawings can achieve a plurality of objects at the same time, and achieving one of the objects has technical usefulness.

Claims (8)

1. A valve device, comprising:
a valve seat having a 1 st outlet for discharging fluid; and
a valve body abutting on the valve seat to close the 1 st outflow port,
the valve seat comprises a 1 st abutting surface facing the valve core side,
the valve core includes: an outer valve body having a 2 nd outlet port through which the fluid flows out; and an inner valve body disposed on the opposite side of the valve seat with the outer valve body interposed therebetween, the inner valve body abutting against the outer valve body to close the 2 nd outlet port,
the inner spool includes a 2 nd abutment surface facing the outer spool side,
the outer spool includes: an outer contact surface that contacts the 1 st contact surface of the valve seat when the valve body contacts the valve seat; and an inner abutting surface abutting against the 2 nd abutting surface of the inner valve body when the inner valve body abuts against the outer valve body,
the hardness of the outer abutting surface is lower than that of the 1 st abutting surface,
the hardness of the inner abutting surface is lower than that of the 2 nd abutting surface,
a curvature of the outer contact surface at a 1 st contact point which is a point where the outer contact surface of the outer spool first contacts when contacting the 1 st contact surface of the valve seat is larger than a curvature of the 1 st contact surface at the 1 st contact point,
a curvature of the inner abutting surface at a 2 nd abutting point, which is a point at which the 2 nd abutting surface of the inner spool abuts first when the 2 nd abutting surface of the outer spool abuts against the 2 nd abutting surface, is larger than a curvature of the 2 nd abutting surface at the 2 nd abutting point.
2. A valve device, comprising:
a valve seat having a 1 st outlet for discharging fluid; and
a valve body abutting on the valve seat to close the 1 st outflow port,
the valve seat comprises a 1 st abutting surface facing the valve core side,
the valve core includes: an outer valve body having a 2 nd outlet port through which the fluid flows out; and an inner valve body disposed on the opposite side of the valve seat with the outer valve body interposed therebetween, the inner valve body abutting against the outer valve body to close the 2 nd outlet port,
the inner spool includes a 2 nd abutment surface facing the outer spool side,
the outer spool includes: an outer contact surface that contacts the 1 st contact surface of the valve seat when the valve body contacts the valve seat; and an inner abutting surface abutting against the 2 nd abutting surface of the inner valve body when the inner valve body abuts against the outer valve body,
the hardness of the 1 st abutting surface is lower than that of the outer abutting surface,
the hardness of the 2 nd abutting surface is lower than that of the inner abutting surface,
a curvature of the 1 st abutting surface at a 1 st abutting point which is a point at which the outer abutting surface of the outer spool abuts first when abutting against the 1 st abutting surface of the valve seat is larger than a curvature of the outer abutting surface at the 1 st abutting point,
the curvature of the 2 nd abutting surface at the 2 nd abutting point, which is the point at which the 2 nd abutting surface of the inner spool first abuts when abutting against the inner abutting surface of the outer spool, is larger than the curvature of the inner abutting surface at the 2 nd abutting point.
3. The valve device according to claim 1 or 2,
an intersection point of a 1 st normal line, which is a normal line of the outer contact surface at the 1 st contact point, and a 2 nd normal line, which is a normal line of the inner contact surface at the 2 nd contact point, is located inside the outer spool.
4. The valve apparatus of claim 3,
the distance from the 1 st abutting point to the intersection point is equal to the distance from the 2 nd abutting point to the intersection point.
5. The valve device according to claim 3 or 4,
a straight line connecting the 1 st abutting point and the 2 nd abutting point is positioned closer to the 1 st outlet side than the intersection point.
6. The valve device according to claim 3 or 4,
a straight line connecting the 1 st abutting point and the 2 nd abutting point is located on the same straight line as the 1 st normal line and the 2 nd normal line.
7. A valve device according to claim 1 or any one of claims 3 to 6 when dependent on claim 1,
when a cross section parallel to the axial direction of the valve body is observed, the 1 st contact surface is formed in a plane shape,
when a cross section parallel to the axial direction of the valve body is viewed, the 2 nd contact surface is formed in a planar shape.
8. A valve device according to claim 1 or any one of claims 3 to 7 when dependent on claim 1,
the 1 st abutting surface and the 2 nd abutting surface are made of metal,
the outer contact surface and the inner contact surface are made of resin.
CN202011221523.0A 2019-11-07 2020-11-05 Valve device Active CN112780780B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188731A (en) * 2000-12-25 2002-07-05 Denso Corp Opening/closing valve for high pressure fluid
CN101165319A (en) * 2006-10-18 2008-04-23 株式会社东芝 Steam valve and steam turbine equipment
US20090008594A1 (en) * 2005-11-12 2009-01-08 Jens Burmester Double seat valve
CN103867347A (en) * 2012-12-07 2014-06-18 爱三工业株式会社 Exhaust gas recirculation valve
CN105339598A (en) * 2013-06-13 2016-02-17 三菱日立电力系统株式会社 Steam valve
JP2017133542A (en) * 2016-01-25 2017-08-03 旭有機材株式会社 Valve device
CN107209522A (en) * 2015-04-09 2017-09-26 爱三工业株式会社 Pressure-reducing valve
CN109812587A (en) * 2019-03-05 2019-05-28 王朝鹤 A kind of throttle valve with relief function
CN110094514A (en) * 2018-01-31 2019-08-06 株式会社鹭宫制作所 Motor-driven valve and refrigerating circulation system
CN110107724A (en) * 2018-02-01 2019-08-09 株式会社鹭宫制作所 Motor-driven valve and refrigerating circulation system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5485422A (en) * 1977-12-21 1979-07-07 Tokyo Shibaura Electric Co Valve
FI68890C (en) * 1981-02-06 1985-11-11 Waertsilae Oy Ab TAETNING AV SAETESVENTIL
JPS6091857U (en) * 1983-11-30 1985-06-22 シグマ技術工業株式会社 fluid valve
JP3394661B2 (en) * 1996-09-19 2003-04-07 株式会社日立製作所 Steam control valve
US6729351B2 (en) 2000-02-22 2004-05-04 Delphi Technologies, Inc. Expanded range multiple-stage metering valve
JP4648857B2 (en) 2006-03-09 2011-03-09 株式会社日立製作所 Steam control valve

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188731A (en) * 2000-12-25 2002-07-05 Denso Corp Opening/closing valve for high pressure fluid
US20090008594A1 (en) * 2005-11-12 2009-01-08 Jens Burmester Double seat valve
CN101165319A (en) * 2006-10-18 2008-04-23 株式会社东芝 Steam valve and steam turbine equipment
CN103867347A (en) * 2012-12-07 2014-06-18 爱三工业株式会社 Exhaust gas recirculation valve
CN105339598A (en) * 2013-06-13 2016-02-17 三菱日立电力系统株式会社 Steam valve
CN107209522A (en) * 2015-04-09 2017-09-26 爱三工业株式会社 Pressure-reducing valve
JP2017133542A (en) * 2016-01-25 2017-08-03 旭有機材株式会社 Valve device
CN110094514A (en) * 2018-01-31 2019-08-06 株式会社鹭宫制作所 Motor-driven valve and refrigerating circulation system
CN110107724A (en) * 2018-02-01 2019-08-09 株式会社鹭宫制作所 Motor-driven valve and refrigerating circulation system
CN109812587A (en) * 2019-03-05 2019-05-28 王朝鹤 A kind of throttle valve with relief function

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