JP4470457B2

JP4470457B2 - Temperature-responsive valve

Info

Publication number: JP4470457B2
Application number: JP2003378379A
Authority: JP
Inventors: 正小池
Original assignee: TLV Co Ltd
Current assignee: TLV Co Ltd
Priority date: 2003-11-07
Filing date: 2003-11-07
Publication date: 2010-06-02
Anticipated expiration: 2023-11-07
Also published as: JP2005140266A

Description

本発明は、被制御流体で加熱冷却され、その温度に応じて変形する感温部材により弁口を開閉する温度応動弁に関する。本発明の温度応動弁は所定温度以上あるいは以下の流体を系外に排出したり、複数の流体を混合して所定温度の流体にしたりする場合に用いられ、特に所定温度以下の復水を自動的に排出する温調トラップとして用いる場合に好適なものである。 The present invention relates to a temperature-responsive valve that opens and closes a valve opening by a temperature-sensitive member that is heated and cooled by a controlled fluid and deforms according to the temperature. The temperature responsive valve of the present invention is used when discharging a fluid at or below a predetermined temperature out of the system or mixing a plurality of fluids into a fluid at a predetermined temperature. It is suitable when used as a temperature control trap that is discharged automatically.

従来の温度応動弁は、弁ケーシングで入口と弁室と出口を形成し、弁室と出口の間に弁口を形成し、弁室内に感温部材と弁体を配置し、感温部材の変形作用で弁体を駆動して弁口を開閉するものである。 In a conventional temperature responsive valve, an inlet, a valve chamber, and an outlet are formed by a valve casing, a valve opening is formed between the valve chamber and the outlet, and a temperature sensitive member and a valve body are disposed in the valve chamber. The valve body is driven by a deformation action to open and close the valve opening.

上記従来の温度応動弁は、流体中のゴミやスケール等の異物が弁口内壁に付着堆積し、弁口が次第に狭められて排出流量の減少、ひいては弁口が詰まってしまうという問題点があった。
実公平３−２８２２５号公報 The conventional temperature responsive valve has a problem in that foreign matter such as dust and scale in the fluid adheres to and accumulates on the inner wall of the valve port, and the valve port is gradually narrowed to reduce the discharge flow rate and eventually clog the valve port. It was.
Japanese Utility Model Publication No. 3-28225

解決しようとする課題は、弁口内壁に付着した異物を掃除できる温度応動弁を提供することである。 The problem to be solved is to provide a temperature responsive valve that can clean foreign matter adhering to the inner wall of the valve opening.

本発明は、弁ケーシングで入口と弁室と出口を形成し、弁室と出口の間に弁口を形成し、弁室内に感温部材と弁体を配置し、感温部材の変形作用で弁体を駆動して弁口を開閉する温度応動弁において、弁口の出口側に位置し外部から進退調節可能な操作棒を弁ケーシングにねじ結合し、操作棒の弁口側端に弁口径よりも少し小径の外径を有し弁口側に変位したときに排出流量を絞ると共に弁口内を変位して弁口内壁に付着した異物を掃除する掃除部を設け、弁口内壁に付着した異物を掃除する場合、操作棒をねじ込んで掃除部を弁口側に変位させると、弁室の流体の温度が低く弁体が弁口を開いているときは排出流量が絞られて弁室の流体の温度が低下し、弁体が弁口を全開していなければ弁体が弁口から更に離れることを特徴とする。 In the present invention, an inlet, a valve chamber, and an outlet are formed in a valve casing, a valve port is formed between the valve chamber and the outlet, a temperature-sensitive member and a valve body are disposed in the valve chamber, and the temperature-sensitive member is deformed. In a temperature responsive valve that opens and closes the valve port by driving the valve body, an operating rod that is located on the outlet side of the valve port and can be moved forward and backward from the outside is screwed to the valve casing. There is a cleaning part that has a slightly smaller outer diameter than that and restricts the discharge flow rate when it is displaced to the valve port side, and displaces the inside of the valve port and cleans foreign matter adhering to the inner wall of the valve port, and adheres to the inner wall of the valve port. When cleaning the foreign object, screw the operating rod and displace the cleaning part to the valve port side.When the temperature of the fluid in the valve chamber is low and the valve body opens, the discharge flow rate is reduced and the valve chamber If the temperature of the fluid decreases and the valve element does not fully open the valve opening , the valve element is further separated from the valve opening .

本発明は、操作棒の弁口側端に設けた掃除部が弁口径よりも少し小径の外径を有し弁口側に変位したときに排出流量を絞るものである。そのため、弁口内壁に付着した異物を掃除する過程で、排出流量が絞られて弁室の流体の温度が低下し、弁体が弁口から離れるので、掃除部は弁体を押し退けなくても弁口内を変位できる。そのため、弁体が掃除部で傷つけられることがないという優れた効果を生じる。 The present invention restricts the discharge flow rate when the cleaning portion provided at the valve port side end of the operating rod has an outer diameter slightly smaller than the valve port diameter and is displaced toward the valve port side. Therefore, in the process of cleaning the foreign matter attached to the inner wall of the valve port, the discharge flow rate is reduced, the temperature of the fluid in the valve chamber decreases, and the valve body moves away from the valve port, so the cleaning part does not have to push the valve body away. It can be displaced in the valve opening. Therefore, the outstanding effect that a valve body is not damaged by a cleaning part is produced.

本発明の温度応動弁は、弁口の出口側に位置し外部から進退調節可能な操作棒を弁ケーシングにねじ結合し、操作棒の弁口側端に弁口径よりも少し小径の外径を有し弁口側に変位したときに排出流量を絞ると共に弁口内を変位して弁口内壁に付着した異物を掃除する掃除部を設けたものである。そのため、外部から操作棒を操作することにより操作棒の弁口側端の掃除部が弁口内を変位して弁口内壁に付着した異物を掃除できる。 In the temperature responsive valve of the present invention, an operation rod that is located on the outlet side of the valve port and can be adjusted to advance and retreat from the outside is screwed to the valve casing, and an outer diameter slightly smaller than the valve port diameter is provided at the valve port side end of the operation rod. It has a cleaning part that restricts the discharge flow rate and displaces the inside of the valve port and cleans foreign matter adhering to the inner wall of the valve port when displaced toward the valve port side. Therefore, by operating the operating rod from the outside, the cleaning part at the valve port side end of the operating rod can displace the inside of the valve port and clean the foreign matter adhering to the inner wall of the valve port.

上記の技術的手段の具体例を示す実施例を説明する（図１参照）。入口１と出口２を有する本体３に蓋４をねじ結合して内部に弁室５を有する弁ケーシングを形成する。弁室５には入口１が通孔６を通して連通し、出口２が弁体嵌合孔７と弁口８と通孔９を通して連通する。弁体嵌合孔７と弁口８は本体３にねじ結合した弁座部材１０に形成する。弁室５内に入口１から流入する流体の流れ方向を規制し、流体中の異物を捕捉するスクリーン１１を配置する。弁口８に対向して弁軸１２を配置する。弁軸１２の下端には弁口８を開閉する円錐状の弁体１３を一体に設ける。弁口８は異物が堆積し難いように短く、例えば弁体１３とのシール面から約１ｍｍの長さに形成する。 An embodiment showing a specific example of the above technical means will be described (see FIG. 1). A lid 4 is screwed to a body 3 having an inlet 1 and an outlet 2 to form a valve casing having a valve chamber 5 therein. The inlet 1 communicates with the valve chamber 5 through the through hole 6, and the outlet 2 communicates with the valve body fitting hole 7, the valve port 8, and the through hole 9. The valve body fitting hole 7 and the valve port 8 are formed in the valve seat member 10 screwed to the main body 3. A screen 11 for restricting the flow direction of the fluid flowing from the inlet 1 into the valve chamber 5 and capturing foreign substances in the fluid is disposed. A valve shaft 12 is disposed opposite to the valve port 8. A conical valve body 13 for opening and closing the valve port 8 is integrally provided at the lower end of the valve shaft 12. The valve port 8 is short so that foreign matter is not easily deposited, and is formed, for example, to have a length of about 1 mm from the sealing surface with the valve body 13.

弁軸１２の上端側は蓋４にＯリング１６を介して進退調節可能にねじ結合した調節棒１７の弁軸嵌合孔１８に変位自在に嵌合する。弁体嵌合孔７と弁口８と弁軸嵌合孔１８は同一軸上に形成する。調節棒１７の上部は蓋４から突出し、その上端面にドライバー等の工具の先端が嵌る切割１９を設ける。調節棒１７の突出部にはロックナット２０を取付けて緩み止めを行い、キャップ２１で覆う。弁軸１２の中央部にばね受け２４を固定し、断面ほぼＵ字状で中央孔と上端の外側に鍔部を設けた中間部材２５を、中央孔を弁軸１２に変位自在にばね受け２４の下端面に当接させて嵌合する。弁軸１２の周りで、調節棒１７の下端面と中間部材２５の鍔部の間に感温部材としてのバイメタル積層体２６と平座金２７を配置する。バイメタル積層体２６はバイメタルディスクを湾曲方向を変えて組み合わせた２枚で一対とし、それを複数対重ねたものである。ばね受け２４の上端面と平座金２７の下端面の間にばね受け２４を弁口８方向に付勢する弁体付勢ばね２８を配置する。中間部材２５の鍔部と弁室５の底壁の間に復帰ばね２９を配置する。 The upper end side of the valve shaft 12 is movably fitted in a valve shaft fitting hole 18 of an adjusting rod 17 screwed to the lid 4 via an O-ring 16 so as to be able to advance and retract. The valve body fitting hole 7, the valve port 8, and the valve shaft fitting hole 18 are formed on the same shaft. An upper portion of the adjustment rod 17 protrudes from the lid 4, and a slit 19 is provided on the upper end surface of the adjustment rod 17 so that the tip of a tool such as a screwdriver fits. A lock nut 20 is attached to the protruding portion of the adjusting rod 17 to prevent loosening, and is covered with a cap 21. A spring receiver 24 is fixed to the central portion of the valve shaft 12, an intermediate member 25 having a substantially U-shaped cross section and a flange on the outer side of the upper end, and a spring receiver 24, which is displaceable to the valve shaft 12. Is brought into contact with the lower end surface of the mating member. Around the valve shaft 12, a bimetal laminate 26 and a flat washer 27 are disposed as a temperature sensitive member between the lower end surface of the adjusting rod 17 and the flange portion of the intermediate member 25. The bimetal laminate 26 is a pair of two bimetal disks combined with different bending directions, and a plurality of the bimetal disks are stacked. Between the upper end surface of the spring receiver 24 and the lower end surface of the flat washer 27, a valve body urging spring 28 that urges the spring receiver 24 toward the valve port 8 is disposed. A return spring 29 is disposed between the flange of the intermediate member 25 and the bottom wall of the valve chamber 5.

本体３の下端に弁口８の出口２側に位置する操作棒３０をＯリング３３を介して進退調節可能にねじ結合する。操作棒３０の弁口８側端である上端に掃除部３１を固着し、掃除部３１の上端に上端が掃除部３１よりも外側に突出したブラシ３２を固着する。掃除部３１は弁口８の口径よりも少し小径の外径を有し、弁口８側に変位したときに弁口８の排出流量を絞ると共に弁口８内を変位して弁口８内壁に付着した異物を掃除する。ブラシ３２は弁体嵌合孔７の奥壁１４に付着した異物を掃除する。 An operating rod 30 positioned on the outlet 2 side of the valve port 8 is screwed to the lower end of the main body 3 through an O-ring 33 so as to be adjustable. The cleaning unit 31 is fixed to the upper end of the operation rod 30 on the valve port 8 side, and the brush 32 whose upper end protrudes outward from the cleaning unit 31 is fixed to the upper end of the cleaning unit 31. The cleaning unit 31 has an outer diameter slightly smaller than the diameter of the valve port 8, and when displaced toward the valve port 8, the discharge flow rate of the valve port 8 is reduced and the inside of the valve port 8 is displaced to displace the inner wall of the valve port 8. Clean any foreign matter adhering to the surface. The brush 32 cleans foreign matter adhering to the back wall 14 of the valve body fitting hole 7.

流体は入口１から通孔６とスクリーン１１を通って弁室５に入り、バイメタル積層体２６の周りを流れ、弁体嵌合孔７と弁口８から通孔９を通って出口２に流出する。バイメタル積層体２６は周囲の流体の温度が上昇して高温に加熱されると、各バイメタルディスクが湾曲してその度合が大きくなり、平座金２７と中間部材２５を介して復帰ばね２９を圧縮しながら積層方向に伸張する。これに伴い、中間部材２５と弁軸１２が弁口８方向に変位し、次第に弁口８の開度が小さくなり、終わりには弁体１３が弁口８を閉じる。弁体１３が弁口８を閉じた後、更に高温の流体が弁室５に流入すると、バイメタル積層体２６は復帰ばね２９と弁体付勢ばね２８を圧縮しながら更に伸張する。このとき、中間部材２５は弁口８方向に変位するが、弁軸１２は変位しない。弁室５の流体の温度が低下すれば、バイメタル積層体２６は湾曲力が小さくなり、復帰ばね２９で中間部材２５を介して押し戻される。これに伴い、中間部材２５と弁軸１２が弁口８から離れる方向に変位し、弁体１３が弁口８を開き、弁室５の流体が出口２に排出される。 The fluid enters the valve chamber 5 from the inlet 1 through the through hole 6 and the screen 11, flows around the bimetal laminate 26, and flows out from the valve body fitting hole 7 and the valve port 8 through the through hole 9 to the outlet 2. To do. When the temperature of the surrounding fluid rises and the bimetal laminate 26 is heated to a high temperature, each bimetal disk is bent and the degree thereof increases, and the return spring 29 is compressed via the plain washer 27 and the intermediate member 25. While extending in the stacking direction. Along with this, the intermediate member 25 and the valve shaft 12 are displaced in the direction of the valve port 8, the opening degree of the valve port 8 gradually decreases, and the valve body 13 closes the valve port 8 at the end. When the higher temperature fluid flows into the valve chamber 5 after the valve body 13 closes the valve port 8, the bimetal laminate 26 further expands while compressing the return spring 29 and the valve body biasing spring 28. At this time, the intermediate member 25 is displaced in the direction of the valve port 8, but the valve shaft 12 is not displaced. If the temperature of the fluid in the valve chamber 5 decreases, the bending force of the bimetal laminate 26 decreases and is pushed back by the return spring 29 via the intermediate member 25. Accordingly, the intermediate member 25 and the valve shaft 12 are displaced away from the valve port 8, the valve body 13 opens the valve port 8, and the fluid in the valve chamber 5 is discharged to the outlet 2.

排出すべき流体の温度を変更する場合、キャップ２１を取外して調節棒１７を回転させる。調節棒１７をねじ込めば排出すべき流体の温度が低くなり、調節棒１７をねじ上げれば排出すべき流体の温度が高くなる。また、弁口８内壁に付着した異物を掃除する場合、操作棒３０をねじ込んで掃除部３１を弁口８側に変位させる。掃除部３１を弁口８側に変位させると、弁室５の流体の温度が低く弁体１３が弁口８を開いているときは排出流量が絞られて弁室５の流体の温度が低下し、弁体１３が弁口８を全開していなければ弁体１３が弁口８から更に離れる。そして、更に掃除棒３０をねじ込むと掃除部３１とブラシ３２が弁口８内を変位して弁口８内壁に付着した異物を掃除し、ブラシ３２が弁体嵌合孔７の奥壁３３に付着した異物を掃除する。弁室５の流体の温度が高く弁体１３が弁口８を閉じているときはブラシ３２が弁体１３に当接した後弁体１３を押し退けながら、掃除部３１とブラシ３２が弁口８内を変位して弁口８内壁に付着した異物を掃除し、ブラシ３２が弁体嵌合孔７の奥壁３３に付着した異物を掃除する。 When the temperature of the fluid to be discharged is changed, the cap 21 is removed and the adjusting rod 17 is rotated. If the adjusting rod 17 is screwed in, the temperature of the fluid to be discharged becomes low, and if the adjusting rod 17 is screwed up, the temperature of the fluid to be discharged becomes high. Moreover, when cleaning the foreign material adhering to the inner wall of the valve port 8, the operating rod 30 is screwed in and the cleaning part 31 is displaced to the valve port 8 side. When the cleaning part 31 is displaced to the valve port 8 side, when the temperature of the fluid in the valve chamber 5 is low and the valve body 13 opens the valve port 8, the discharge flow rate is reduced and the temperature of the fluid in the valve chamber 5 decreases. If the valve body 13 does not fully open the valve port 8, the valve body 13 further moves away from the valve port 8. When the cleaning rod 30 is further screwed in, the cleaning part 31 and the brush 32 displace inside the valve port 8 to clean the foreign matter adhering to the inner wall of the valve port 8, and the brush 32 is attached to the inner wall 33 of the valve body fitting hole 7. Clean any foreign matter that has adhered. When the temperature of the fluid in the valve chamber 5 is high and the valve body 13 closes the valve port 8, the cleaning unit 31 and the brush 32 are moved to the valve port 8 while pushing the valve body 13 away after the brush 32 contacts the valve body 13. The foreign matter adhering to the inner wall of the valve port 8 is displaced by cleaning the foreign matter adhering to the inner wall 33 of the valve body fitting hole 7.

本発明の温度応動弁の断面図。Sectional drawing of the temperature responsive valve of this invention.

符号の説明Explanation of symbols

１入口
２出口
３本体
４蓋
５弁室
７弁体嵌合孔
８弁口
１０弁座部材
１２弁軸
１３弁体
１７調節棒
１８弁軸嵌合孔
２６バイメタル積層体
３０操作棒
３１掃除部
DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Main body 4 Lid 5 Valve chamber 7 Valve body fitting hole 8 Valve port 10 Valve seat member 12 Valve shaft 13 Valve body 17 Adjustment rod 18 Valve shaft fitting hole 26 Bimetal laminated body 30 Operation rod 31 Cleaning part

Claims

弁ケーシングで入口と弁室と出口を形成し、弁室と出口の間に弁口を形成し、弁室内に感温部材と弁体を配置し、感温部材の変形作用で弁体を駆動して弁口を開閉するものにおいて、弁口の出口側に位置し外部から進退調節可能な操作棒を弁ケーシングにねじ結合し、操作棒の弁口側端に弁口径よりも少し小径の外径を有し弁口側に変位したときに排出流量を絞ると共に弁口内を変位して弁口内壁に付着した異物を掃除する掃除部を設け、弁口内壁に付着した異物を掃除する場合、操作棒をねじ込んで掃除部を弁口側に変位させると、弁室の流体の温度が低く弁体が弁口を開いているときは排出流量が絞られて弁室の流体の温度が低下し、弁体が弁口を全開していなければ弁体が弁口から更に離れることを特徴とする温度応動弁。 The valve casing forms an inlet, a valve chamber, and an outlet. A valve opening is formed between the valve chamber and the outlet. A temperature-sensitive member and a valve body are arranged in the valve chamber. The valve body is driven by the deformation action of the temperature-sensitive member. In order to open and close the valve port, an operating rod that is located on the outlet side of the valve port and can be adjusted to advance and retreat from the outside is screwed to the valve casing, and the end of the operating rod on the valve port side is slightly smaller than the diameter of the valve port. When cleaning the foreign matter attached to the inner wall of the valve port by providing a cleaning part that throttles the discharge flow rate and displaces the inside of the valve port and cleans the foreign matter attached to the inner wall of the valve port when it has a diameter and is displaced toward the valve port side, When the operating rod is screwed in and the cleaning part is displaced to the valve port side, when the valve chamber fluid temperature is low and the valve body opens the valve port, the discharge flow rate is reduced and the valve chamber fluid temperature decreases. A temperature responsive valve characterized in that the valve body further moves away from the valve opening unless the valve opening is fully opened .