WO2022102125A1 - 逆止弁 - Google Patents

逆止弁 Download PDF

Info

Publication number
WO2022102125A1
WO2022102125A1 PCT/JP2020/042614 JP2020042614W WO2022102125A1 WO 2022102125 A1 WO2022102125 A1 WO 2022102125A1 JP 2020042614 W JP2020042614 W JP 2020042614W WO 2022102125 A1 WO2022102125 A1 WO 2022102125A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve body
valve
check valve
guide
guide member
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.)
Ceased
Application number
PCT/JP2020/042614
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
充宏 池田
雄大 森川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2022561242A priority Critical patent/JP7325661B2/ja
Priority to PCT/JP2020/042614 priority patent/WO2022102125A1/ja
Publication of WO2022102125A1 publication Critical patent/WO2022102125A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/021—Check valves with guided rigid valve members the valve member being a movable body around which the medium flows when the valve is open
    • 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
    • F16K2200/00—Details of valves
    • F16K2200/50—Self-contained valve assemblies
    • F16K2200/502—Cages for valves, i.e. means to be inserted within the valve housing, surrounding and guiding the closure member

Definitions

  • This disclosure relates to a check valve attached to a refrigerant pipe of a refrigerating cycle of an air conditioner.
  • a check valve may be provided in the refrigerant piping of the refrigeration cycle in an air conditioner to prevent backflow of refrigerant or the like.
  • the check valve operates so that the valve body provided inside prevents the fluid from flowing back due to the back pressure of the fluid such as the passing refrigerant.
  • a valve body having a valve seat portion, a valve body slidably arranged inside the valve body and having a valve portion that closes the valve seat portion, and a valve opening operation of the valve body.
  • a check valve with a regulatory pin that regulates the limit is disclosed. In this check valve, when the valve body is opened, the valve body comes into line contact with the regulation pin, so that the valve opening operation limit of the valve body is restricted by the regulation pin, and the valve body is rotated by the engaging means. The stop is done.
  • Patent Document 2 describes a valve assembly including a cylindrical guide member arranged inside a valve main body portion, a valve body arranged inside the guide member, and a valve seat member having a valve seat portion.
  • a check valve arranged inside the valve body is disclosed.
  • the cylindrical guide member and the valve seat member are engaged with each other, and the relationship between the valve seat portion and the inner diameter of the guide portion has a configuration for setting the axis.
  • the movement of the valve body to the upper side is restricted by the upper portion of the valve body coming into contact with the bent portion in which one end of the guide member is bent inward.
  • a concave groove is formed inwardly on the outer peripheral surface of the valve seat member, and a sealing member for sealing the fluid leaking from the gap between the valve seat member and the valve body is fitted into the concave groove.
  • the guide member and the valve seat member are positioned by the drawing process of the valve body, but since the guide member and the valve seat member are separated, the guide member is vibrated. There is a risk of problems such as rattling and disengagement between the valve body and the valve body.
  • the check valve is composed of five parts, a valve body, a guide member, a valve body, a valve seat member, and a sealing material, and since the number of parts is large, problems such as rattling of the components occur more. It will be easier.
  • the present disclosure has been made in view of the above-mentioned problems in the prior art, in which the pressure loss when the fluid passes is suppressed, the strength of the regulating means when the valve body is opened is ensured, and the component parts are disclosed. It is an object of the present invention to provide a check valve capable of suppressing the occurrence of problems such as rattling.
  • the check valve of the present disclosure is a check valve that regulates the flow of the fluid so that the fluid flows in only one direction, and is provided in a valve body formed in a cylindrical shape and in the valve body.
  • a valve body that moves in the axial direction of the valve body is provided, and the valve body is formed in a cylindrical shape, and has an accommodating portion that accommodates the valve body, an inflow portion that is formed at one end and into which the fluid flows.
  • a valve body stop portion formed at the other end and formed in a cylindrical shape protruding inward at the upper end of the accommodating portion and the outflow portion where the fluid flows out, and restricts the movement of the valve body to the outflow portion side. And have.
  • a cylindrical valve body stopper portion protruding inward from the valve body is formed. As a result, it is possible to suppress the pressure loss when the fluid passes, secure the strength of the regulating means when the valve body is opened, and suppress the occurrence of defects such as rattling of the components.
  • FIG. It is a perspective view which shows an example of the appearance of the check valve which concerns on Embodiment 1.
  • FIG. It is a schematic cross-sectional view which shows an example of the internal structure of the check valve of FIG.
  • FIG. 3 is an enlarged schematic view showing the periphery of the upper part of the guide member of FIG. 2.
  • FIG. 3 is an enlarged schematic view showing the periphery of the upper part of the guide member of FIG. 2.
  • It is a perspective view which shows an example of the structure of the valve body of FIG.
  • It is a schematic sectional drawing which shows an example of the internal structure of the check valve which concerns on Embodiment 2.
  • FIG. It is a schematic cross-sectional view for demonstrating another example of the arrangement relation between a guide member and a valve body stop part.
  • the check valve according to the first embodiment is arranged, for example, in the piping of an air conditioner, prevents the backflow of a fluid such as a refrigerant, and regulates the fluid to flow in only one direction.
  • the check valve has an internal valve body that opens when the fluid flows in from one end. Further, when the fluid flows in from the other end, the valve body closes.
  • FIG. 1 is a perspective view showing an example of the appearance of the check valve according to the first embodiment.
  • FIG. 2 is a schematic cross-sectional view showing an example of the internal structure of the check valve of FIG.
  • FIG. 2 shows an example of a cross section when cut in the xy plane passing through the central axis of the check valve 1 of FIG.
  • the check valve 1 includes a valve body 10 and a valve body 20.
  • valve body 10 The valve body 10 is formed, for example, in a cylindrical shape.
  • the valve body 10 is formed with an accommodating portion 11, an inflow portion 12, and an outflow portion 13. Further, a guide member 14 is formed inside the valve body 10. Normally, as shown by the solid arrow in FIG. 1, a fluid such as a refrigerant flows through the valve body 10 from the inflow portion 12 toward the outflow portion 13.
  • the accommodating portion 11 is formed in the central portion of the valve body 10 and accommodates the guide member 14 and the valve body 20.
  • the inflow portion 12 is formed at one end of the valve body 10 and serves as an inlet for the fluid flowing into the check valve 1.
  • the outflow portion 13 is formed at the other end of the valve body 10 and serves as an outlet for the fluid passing through the check valve 1.
  • Piping is connected to the inflow part 12 and the outflow part 13 by welding or the like.
  • the piping is not limited to welding, and may be connected using, for example, screws or flanges. In this example, the case where the pipes are connected by welding will be described.
  • the inflow portion 12 and the outflow portion 13 are formed so that their inner diameters are different from each other. As described above, since the diameters of the pipes that can be connected to the inflow portion 12 and the outflow portion 13 are different, erroneous connection of the pipes to the valve body 10 is prevented. As a result, the check valve 1 can be correctly installed in the direction in which the flow of the fluid is desired to be blocked.
  • the valve body 10 is drawn so that the diameter gradually decreases from the accommodating portion 11 toward each of the inflow portion 12 and the outflow portion 13.
  • the guide member 14 is positioned by the drawing process.
  • the inflow portion 12 side of the valve body 10 may be referred to as a “lower part”, and the outflow portion 13 side may be referred to as an “upper part”.
  • the guide member 14 provided inside the valve body 10 is formed in a cylindrical shape and guides the valve body 20 arranged inside.
  • the guide member 14 has a guide portion 14a and a bending portion 14b.
  • the guide portion 14a is arranged so as to be in contact with the accommodating portion 11 of the valve body 10.
  • a bent portion 14b which is bent so as to project inward and integrally formed with the guide portion 14a is provided.
  • the bent portion 14b functions as a valve seat with respect to the valve body 20.
  • FIG. 3 is an enlarged schematic view showing the periphery of the lower part of the guide member of FIG. 2.
  • a mating portion 14c is formed in the upper portion of the bent portion 14b on the inner peripheral side (inside the dotted circle).
  • the mating portion 14c comes into contact with the valve body 20 when it moves toward the inflow portion 12.
  • the mating portion 14c is R-chamfered. This is to prevent damage to the valve body 20 when the valve body 20 comes into contact with the bent portion 14b due to the backflow of the fluid.
  • the lower portion of the bent portion 14b on the inner peripheral side is chamfered. This is to reduce the pressure loss that occurs when the fluid flows in from the inflow portion 12 and passes through the inner circumference of the bent portion 14b.
  • Arbitrary R chamfering is applied to the inner bent portion at the boundary portion between the guide portion 14a and the bent portion 14b. This is to relieve the stress applied when the valve body 20 moves in the axial direction (x direction) and when the fluid flows. Further, an arbitrary R chamfer is also applied to the outer bent portion at the boundary portion between the guide portion 14a and the bent portion 14b. This is to prevent the outer bent portion from damaging the inner surface of the drawn portion of the valve main body 10 when the valve main body 10 is drawn.
  • the thickness of the bent portion 14b in the flow direction (x direction) is, for example, the pressure of the fluid flowing inside the check valve 1 or the pressure applied when the valve body 20 comes into contact with the bent portion 14b due to the backflow fluid. It is preferable that the thickness is sufficient to withstand.
  • the inner peripheral surface of the guide portion 14a and the inner peripheral surface of the bent portion 14b have the same axial center.
  • the valve body 20 and the guide member 14 are formed so that the gap between the valve body 20 and the inner surface of the guide member 14 is reduced. As a result, the shake when the valve body 20 moves in the axial direction (x direction) is reduced, so that fluid leakage due to the shaft shake can be prevented. Further, the guide member 14 has a higher surface roughness on the inner surface and reduces frictional resistance with the valve body 20. As a result, the valve body 20 can be smoothly moved in the axial direction (x direction).
  • a concave groove is formed inward on the outer peripheral surface of the guide portion 14a of the guide member 14, and the seal member 16 is provided in the concave groove.
  • the seal member 16 blocks the fluid flowing between the outer peripheral surface of the guide member 14 and the inner peripheral surface of the accommodating portion 11.
  • the seal member 16 is made of a material such as rubber, resin, or metal that can block the flow of fluid flowing through the gap between the guide member 14 and the accommodating portion 11.
  • the seal member 16 is arranged, for example, at the central portion of the guide portion 14a in the axial direction (x direction).
  • brazing or the like is performed on both end faces of the valve body 10.
  • the seal member 16 is arranged in the central portion of the guide portion 14a, so that the seal member 16 becomes a valve. It is arranged at the position farthest from both end faces of the main body 10. Therefore, it is possible to prevent heat melting of the seal member 16 due to brazing or the like.
  • the thickness (thickness in the y direction) between the inner peripheral surface and the outer peripheral surface of the guide member 14 (guide portion 14a) is the axial direction (x direction) of the valve body 20 when a fluid flows during the product life period.
  • the thickness should be such that the thickness does not disappear even if it is moved to.
  • the guide member 14 is formed by using a material harder than the valve body 20. This is to prevent the guide member 14 from being damaged when the valve body 20 moves the guide member 14 in the axial direction (x direction).
  • FIG. 4 is an enlarged schematic view showing the periphery of the upper part of the guide member of FIG. 2.
  • a valve body stop portion 15 is formed at the upper end of the accommodating portion 11 in the valve body 10.
  • the valve body stop portion 15 is formed in a cylindrical shape protruding inward by, for example, hydroforming the outer pipe forming the valve body 10, and the guide member 14 is in contact with the lower surface (the surface on the inflow portion 12 side). Arranged like this. That is, the valve body stop portion 15 is provided so as to be located above the valve body 20 and the guide member 14.
  • the valve body stop portion 15 functions as a stopper so that the valve body 20 does not move above the valve body stop portion 15 when the valve body 20 opens and moves to the upper part. That is, the valve body stop portion 15 is provided as a regulating means for regulating the valve opening operation limit of the valve body 20.
  • the thickness of the valve body stop portion 15 is, for example, the pressure of the fluid flowing inside the check valve 1 or the impact of the valve body 20 colliding with the valve body stop portion 15 when the valve body 20 is opened by the flowing fluid.
  • the thickness should be sufficient to withstand the force.
  • valve body stop portion 15 By forming the valve body stop portion 15 in a cylindrical shape, the valve body 20 comes into surface contact with the valve body stop portion 15. In this case, since the impact force applied to the valve body stop portion 15 is dispersed as compared with the case where the valve body 20 is in line contact, it is possible to suppress the occurrence of problems such as damage to the valve body stop portion 15.
  • the inner diameter of the valve body stopper 15 is as large as possible. This is to prevent the flow of the fluid flowing through the check valve 1 from being obstructed. Further, for example, the valve body stopper portion 15 may be chamfered with R at the corner portion on the inner peripheral side. This is to suppress a sudden change in flow when the fluid passes through the valve body stop portion 15.
  • valve body 10 described above has a wall thickness capable of withstanding a pressure of 5 times or more the design pressure of the fluid flowing in the pipe. This is to satisfy the strictest UL (Underwriters Laboratories) standard 5 times pressure failure test among various product safety standards (KHK standard and UL standard, etc.) in Japan and overseas for general check valves. To make it.
  • UL Underwriters Laboratories
  • the total length (x direction) of the valve body 10 is preferably 140 mm or more. As described above, when the check valve 1 is manufactured, brazing or the like is performed on both end faces of the valve body 10, but in this case, the influence of heat on the seal member 16 provided on the guide member 14 is prevented. It was found that a distance of 70 mm or more was required for brazing. Therefore, in order to prevent heat melting of the seal member 16 due to brazing to both end surfaces of the valve body 10, the total length of the valve body 10 needs to be 140 mm or more. By setting the total length (x direction) of the valve body 10 to 140 mm or more in this way, it is possible to prevent heat melting of the seal member 16 provided on the guide member 14.
  • valve body 20 The valve body 20 of FIG. 2 is arranged between the bent portion 14b of the guide member 14 provided in the accommodating portion 11 and the valve body stopping portion 15, and the inside of the accommodating portion 11 is axially (x-direction) depending on the flow direction of the fluid. ).
  • the valve body 20 moves to the outflow side in the accommodating portion 11.
  • the fluid passes through the check valve 1.
  • the valve body 20 moves to the inflow side in the accommodating portion 11 and comes into contact with the bent portion 14b that functions as a valve seat. As a result, the fluid is shut off and the backflow in the check valve 1 is prevented.
  • FIG. 5 is a perspective view showing an example of the configuration of the valve body of FIG. As shown in FIG. 5, the valve body 20 includes a valve portion 21 and a guide portion 22.
  • the valve portion 21 comes into contact with the bent portion 14b of the guide member 14 that functions as the valve seat of the valve body 10 when the fluid flows back from the outflow portion 13 to the inflow portion 12. As a result, the flow path of the fluid formed by the bent portion 14b is blocked by the valve portion 21, so that the backflow of the fluid is prevented.
  • the guide unit 22 guides the valve body 20 when the valve body 20 moves the guide member 14 in the axial direction.
  • the outer diameter of the guide portion 22 is substantially equal to the inner diameter of the guide member 14 of the valve body 10.
  • the guide portion 22 has a plurality of blades protruding from the central axis in the outer peripheral direction at equal angular intervals. As a result, the fluid that flows in from the inflow portion 12 of the valve body 10 and passes through the flow path formed by the bent portion 14b passes between the plurality of blades and flows out from the outflow portion 13.
  • the guide portion 22 has four blades, but the guide portion 22 is not limited to this, and the guide portion 22 may be three or more.
  • the blades of the guide portion 22 have a shape that rotates regularly when the fluid passes through. By forming the blades of the guide portion 22 into a rotating shape in this way, the blades of the guide portion 22 move in the axial direction (x direction) at a fixed place, and the blades of the guide portion 22 move to a specific location on the inner surface of the guide member 14. It is possible to prevent damage by rubbing only.
  • the valve body 20 has a mass that can be moved by the pressure of the fluid so that when the fluid flows from the inflow portion 12 to the outflow portion 13, it moves to the outflow portion 13. Further, the valve body 20 is formed of a resin or the like, and is formed by using a material softer than the guide member 14. This is to prevent the guide member 14 from being damaged when the valve body 20 moves the guide member 14 in the axial direction (x direction).
  • a hole 21a may be formed in the valve portion 21 of the valve body 20.
  • the hole portion 21a when the valve body 20 moves to the inflow portion 12 side and comes into contact with the bent portion 14b of the valve body 10, the flow path on the inflow portion 12 side and the flow path on the outflow portion 13 side communicate with each other.
  • the lower portion (inflow portion 12 side) of the valve main body 10 is completely closed, and it is possible to prevent the pipe from being damaged.
  • the diameter of the hole 21a is preferably about 0.4 mm or less. This is to prevent the backflow fluid from being blocked while preventing the piping from being damaged.
  • valve body 20 receives pressure from the outflow portion 13 side and moves to the inflow portion 12 side in the axial direction (x direction). Then, the valve portion 21 of the valve body 20 comes into contact with the bent portion 14b that functions as a valve seat provided on the inflow portion 12 side of the guide member 14. As a result, the fluid flowing in from the outflow portion 13 is blocked.
  • the check valve 1 is provided with a cylindrical valve body stop portion 15 projecting inward at the upper end of the accommodating portion 11. Since the valve body stop portion 15 is provided in a cylindrical shape, it is possible to suppress the flow of the fluid from being obstructed when the fluid passes through the check valve 1, and thus it is possible to suppress the pressure loss. Further, since the valve body 20 comes into surface contact with the valve body stop portion 15 at the time of valve opening and the impact force at the time of contact is dispersed, the strength of the valve body stop portion 15 when the valve body 20 is opened is increased. Can be secured. Further, since the valve body stop portion 15 is integrally formed so as to project inside the valve body 10, the number of parts can be reduced and the occurrence of defects such as rattling of component parts can be suppressed. Can be done.
  • the accommodating portion 11 is formed by bending the guide portion 14a for guiding the valve body 20 and the inflow portion 12 side of the guide portion 14a corresponding to the valve seat portion inward. It has a guide member 14 made of 14b. A concave groove is provided on the outer periphery of the guide portion 14a, and a seal member 16 is provided in the concave groove. As a result, the fluid flowing between the outer peripheral surface of the guide member 14 and the inner peripheral surface of the accommodating portion 11 is blocked, so that leakage of the fluid when the fluid flows backward can be prevented.
  • the seal member 16 provided in the guide portion 14a is provided in the central portion of the check valve 1 in the axial direction. This makes it possible to prevent heat melting of the seal member 16 when the check valve 1 is manufactured by brazing or the like on both end faces of the check valve 1.
  • the inner circumference of the guide portion 14a and the inner circumference of the bent portion 14b of the guide member 14 have the same axial center.
  • the boundary between the guide portion 14a and the bent portion 14b in the guide member 14 is chamfered.
  • the stress applied when the fluid flows can be relaxed, and it is possible to prevent the inner surface of the drawn portion of the valve main body 10 from being damaged when the valve main body 10 is drawn. can.
  • the bent portion 14b of the guide member 14 is chamfered to the mating portion 14c formed on the outflow portion 13 side of the inner circumference. This makes it possible to prevent damage to the valve body 20 when the valve body 20 comes into contact with the bent portion 14b due to the backflow of the fluid.
  • the bent portion 14b is chamfered on the inner peripheral inflow portion 12 side. As a result, the pressure loss that occurs when the fluid flows in from the inflow portion 12 can be further reduced.
  • Embodiment 2 Next, the second embodiment will be described.
  • the second embodiment is different from the first embodiment in that a protrusion functioning as a valve seat is provided on the valve body 10.
  • the same reference numerals are given to the parts common to the first embodiment, and detailed description thereof will be omitted.
  • FIG. 6 is a schematic cross-sectional view showing an example of the internal structure of the check valve according to the second embodiment.
  • FIG. 6 shows an example of a cross section when cut in an xy plane passing through the central axis of the check valve 1 having the appearance shown in FIG. 1, as in the first embodiment.
  • the check valve 1 includes a valve body 10 and a valve body 20. Further, the valve body 10 is formed with an accommodating portion 11, an inflow portion 12, an outflow portion 13, and a valve body stopping portion 15.
  • a valve seat portion 17 is formed at the lower end of the accommodating portion 11 in the valve body 10.
  • the valve seat portion 17 is formed in a cylindrical shape protruding inward. Similar to the bending portion 14b in the first embodiment, the valve seat portion 17 blocks the fluid flowing back from the outflow portion 13 side when the valve body 20 moves to the lower side (inflow portion 12 side) and comes into contact with the valve body 20. ..
  • a mating portion with R chamfer is formed on the upper portion of the valve seat portion 17 on the inner peripheral side. This makes it possible to prevent damage to the valve body 20 when the valve body 20 comes into contact with the valve seat portion 17 due to the backflow of fluid. Further, the lower portion of the valve seat portion 17 on the inner peripheral side (inner circumference on the inflow portion 12 side) is chamfered. This makes it possible to reduce the pressure loss that occurs when the fluid flows in from the inflow portion 12.
  • the valve seat portion 17 is formed in the valve body 10, and the guide member 14 provided in the check valve 1 according to the first embodiment is provided. Not done. Therefore, the accommodating portion 11 is formed so that the inner diameter thereof is substantially equal to the outer diameter of the guide portion 22 in the valve body 20 accommodated in the accommodating portion 11. As a result, the accommodating portion 11 can appropriately guide the valve body 20. As described above, in the second embodiment, the inner peripheral surface of the accommodating portion 11 functions as the guide portion 14a for guiding the valve body 20.
  • the thickness (thickness in the y direction) between the inner peripheral surface and the outer peripheral surface of the accommodating portion 11 is the thickness even when the fluid flows and the valve body 20 moves in the axial direction (x direction) during the product life.
  • the thickness should be such that the thickness does not disappear.
  • the accommodating portion 11 is formed by using a material harder than the valve body 20. This is to prevent the accommodating portion 11 from being damaged when the valve body 20 moves in the accommodating portion 11 in the axial direction (x direction).
  • the check valve 1 according to the second embodiment can be manufactured by, for example, hydroforming. Specifically, the valve body stopping portion 15 and the valve seat portion 17 projecting inward are formed by performing hydroforming processing in a state where the valve body 20 is housed in the tubular member forming the valve body 10. Will be done.
  • the inner peripheral surface of the accommodating portion 11 functions as a guide portion for guiding the valve body 20, and a part of the valve body 10 is projected inward at the lower end of the accommodating portion 11.
  • the valve seat portion 17 is formed.
  • the guide member 14 in the first embodiment becomes unnecessary, and the number of parts can be reduced, so that the occurrence of problems such as rattling of the constituent parts can be further suppressed.
  • the present disclosure is not limited to the above-described embodiments 1 and 2, and various modifications and applications are possible without departing from the gist of the present disclosure.
  • the guide member 14 and the valve body stop portion 15 are separated and arranged so that the upper end of the guide member 14 is in contact with the lower surface of the valve body stop portion 15. This is an example of this example. Not limited to.
  • FIG. 7 is a schematic cross-sectional view for explaining another example of the arrangement relationship between the guide member and the valve body stop portion.
  • a groove portion 15a is formed on the lower surface (the surface on the inflow portion 12 side) of the valve body stop portion 15.
  • the upper surface of the guide portion 14a of the guide member 14 is fitted into the groove portion 15a.
  • the guide member 14 is more reliably fixed by fitting the guide portion 14a into the groove portion 15a of the valve body stop portion 15. Therefore, as in the first and second embodiments, it is possible to suppress the occurrence of problems such as rattling.
  • valve body 11 accommodating part, 12 inflow part, 13 outflow part, 14 guide member, 14a guide part, 14b bending part, 14c mating part, 15 valve body stop part, 15a groove part, 16 seal member, 17 valve seat, 20 valve body, 21 valve, 21a hole, 22 guide.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
PCT/JP2020/042614 2020-11-16 2020-11-16 逆止弁 Ceased WO2022102125A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022561242A JP7325661B2 (ja) 2020-11-16 2020-11-16 逆止弁
PCT/JP2020/042614 WO2022102125A1 (ja) 2020-11-16 2020-11-16 逆止弁

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/042614 WO2022102125A1 (ja) 2020-11-16 2020-11-16 逆止弁

Publications (1)

Publication Number Publication Date
WO2022102125A1 true WO2022102125A1 (ja) 2022-05-19

Family

ID=81602163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/042614 Ceased WO2022102125A1 (ja) 2020-11-16 2020-11-16 逆止弁

Country Status (2)

Country Link
JP (1) JP7325661B2 (https=)
WO (1) WO2022102125A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4382783A1 (de) * 2022-12-08 2024-06-12 TI Automotive Technology Center GmbH Rückschlagventil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179030U (https=) * 1974-12-19 1976-06-22
JP3080637U (ja) * 2001-03-27 2001-10-05 アクセル株式会社 部材の連結装置
JP2002147681A (ja) * 2000-11-14 2002-05-22 Saginomiya Seisakusho Inc 配管内蔵型逆止弁ならびにそれを用いた配管接続構造および配管接続方法
WO2020194646A1 (ja) * 2019-03-28 2020-10-01 三菱電機株式会社 逆止弁および空気調和装置、ならびに逆止弁の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5179030U (https=) * 1974-12-19 1976-06-22
JP2002147681A (ja) * 2000-11-14 2002-05-22 Saginomiya Seisakusho Inc 配管内蔵型逆止弁ならびにそれを用いた配管接続構造および配管接続方法
JP3080637U (ja) * 2001-03-27 2001-10-05 アクセル株式会社 部材の連結装置
WO2020194646A1 (ja) * 2019-03-28 2020-10-01 三菱電機株式会社 逆止弁および空気調和装置、ならびに逆止弁の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4382783A1 (de) * 2022-12-08 2024-06-12 TI Automotive Technology Center GmbH Rückschlagventil

Also Published As

Publication number Publication date
JPWO2022102125A1 (https=) 2022-05-19
JP7325661B2 (ja) 2023-08-14

Similar Documents

Publication Publication Date Title
JP7369225B2 (ja) 電子膨張弁
JP2020101291A (ja) 弁装置
JP7340044B2 (ja) 流体管理ユニット及び熱管理システム
EP2933540A1 (en) Electronic expansion valve
TW200300487A (en) Valve
US11149627B2 (en) Cooling-water control valve device
KR102617567B1 (ko) 유체 디바이스
EP3739245B1 (en) Butterfly valve
WO2022102125A1 (ja) 逆止弁
RU2209354C2 (ru) Вентиль, в частности вентиль радиатора отопления
KR102809323B1 (ko) 전자 팽창 밸브 및 이의 냉동 시스템
US20220260163A1 (en) Valve device
WO2022102123A1 (ja) 逆止弁
JP7503346B2 (ja) バルブ
KR101634084B1 (ko) 차압저감구조를 구비한 밸브 조립체
KR20250003841A (ko) 스톱 밸브
EP3514419B1 (en) Valve having a bypass conduit
KR200470135Y1 (ko) 코아조립체와 이를 구비한 체크밸브
KR101658269B1 (ko) 파일럿식 전자 밸브
CN223459969U (zh) 一种防灰尘的非封闭安全阀
KR102197790B1 (ko) 사이트 글라스 밸브
JP2024086144A (ja) 逆止弁及び冷凍サイクルシステム
CN112879575A (zh) 阀装置
JP7549564B2 (ja) 弁装置
KR20260033842A (ko) 차량용 공조장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20961648

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022561242

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20961648

Country of ref document: EP

Kind code of ref document: A1