JP2022100845A5 - - Google Patents
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- JP2022100845A5 JP2022100845A5 JP2020215071A JP2020215071A JP2022100845A5 JP 2022100845 A5 JP2022100845 A5 JP 2022100845A5 JP 2020215071 A JP2020215071 A JP 2020215071A JP 2020215071 A JP2020215071 A JP 2020215071A JP 2022100845 A5 JP2022100845 A5 JP 2022100845A5
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- differential pressure
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- pressure valve
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Description
本発明において、前記ダイアフラムの中央部が、前記弁室と前記背圧室との差圧がない状態で円錐台形状となるように構成され、前記弁体が、前記ダイアフラムの中央部に取り付けられている。このようにすることで、弁体の移動量を大きくすることができる。
本発明において、前記封止部材が、ポリテトラフルオロエチレン製であることが好ましい。
In the present invention, the central portion of the diaphragm is configured to have a truncated cone shape with no differential pressure between the valve chamber and the back pressure chamber, and the valve body is attached to the central portion of the diaphragm. are By doing so, the amount of movement of the valve body can be increased.
In the present invention, it is preferable that the sealing member is made of polytetrafluoroethylene .
本発明において、前記保持部材が、前記保護シートに接する円環平面と、円筒形状の内周面と、前記円環平面と前記内周面とを滑らかに接続する曲面形状の接続面と、を有し、前記保護シートの内径が、前記保持部材の前記内周面の径より小さいことが好ましい。このようにすることで、保護シートが接続面全体と向かい合うように配置され、ダイアフラムと接続面との間に異物が挟まることをより確実に回避して、ダイアフラムの損傷をさらに抑制できる。 In the present invention , the holding member includes an annular plane that contacts the protective sheet, a cylindrical inner peripheral surface, and a curved connection surface that smoothly connects the annular plane and the inner peripheral surface, and the inner diameter of the protective sheet is preferably smaller than the diameter of the inner peripheral surface of the holding member. By doing so, the protective sheet is arranged so as to face the entire connection surface, preventing foreign matter from being caught between the diaphragm and the connection surface more reliably, and further suppressing damage to the diaphragm.
本発明において、前記差圧弁が、前記ダイアフラムの外周部の他方の面に重ねて配置され、前記ダイアフラムとともに前記弁本体と前記保持部材とに保持される円環形状の封止部材をさらに有している。このようにすることで、弁室と背圧室とを互いに効果的に密閉できる。 In the present invention, the differential pressure valve further includes an annular sealing member that is arranged to overlap the other surface of the outer peripheral portion of the diaphragm and that is held by the valve main body and the holding member together with the diaphragm. are By doing so, the valve chamber and the back pressure chamber can be effectively sealed from each other.
上記目的を達成するために、本発明の他の一態様に係る弁装置は、流入口と、前記流入口に接続された主弁室と、前記主弁室に主弁座を介して接続された第１流出口と、前記主弁室に分岐通路を介して接続された差圧弁室と、前記差圧弁室に差圧弁座を介して接続された第２流出口と、を有する弁本体と、前記主弁室に配置され、前記主弁座を開閉する主弁体と、前記差圧弁室と背圧室としての前記第１流出口とを区画するように配置された合成樹脂製のダイアフラムと、前記弁本体との間に前記ダイアフラムの外周部を挟むように配置された円環形状の保持部材と、前記差圧弁室に配置され、前記ダイアフラムによって移動される差圧弁体と、を有する弁装置であって、前記ダイアフラムの中央部が、前記差圧弁室と前記第１流出口との差圧がない状態で円錐台形状となるように構成され、前記弁体が、前記ダイアフラムの中央部に取り付けられており、前記弁装置が、前記ダイアフラムの外周部の前記差圧弁室側の面に重ねて配置された円環形状の封止部材と、前記ダイアフラムの外周部の前記第１流出口側の面に重ねて配置された合成樹脂製の円環形状の保護シートと、を有し、前記封止部材、前記ダイアフラムの外周部および前記保護シートが、前記弁本体と前記保持部材とに挟まれて保持されていることを特徴とする。 To achieve the above object, a valve device according to another aspect of the present invention includes an inlet, a main valve chamber connected to the inlet, and a main valve seat connected to the main valve chamber. a first outflow port connected to the main valve chamber via a branch passage; a differential pressure valve chamber connected to the main valve chamber via a branch passage; and a second outflow port connected to the differential pressure valve chamber via a differential pressure valve seat. a main valve body arranged in the main valve chamber for opening and closing the main valve seat; and a synthetic resin diaphragm arranged so as to partition the differential pressure valve chamber and the first outflow port as a back pressure chamber. , an annular holding member arranged so as to sandwich the outer peripheral portion of the diaphragm between the valve body and the differential pressure valve body arranged in the differential pressure valve chamber and moved by the diaphragm. In the valve device, the central portion of the diaphragm is configured to have a truncated cone shape in a state where there is no differential pressure between the differential pressure valve chamber and the first outlet, and the valve body is positioned at the center of the diaphragm. and the valve device comprises an annular sealing member disposed over a surface of the outer peripheral portion of the diaphragm on the side of the differential pressure valve chamber, and the first flow on the outer peripheral portion of the diaphragm . and an annular protection sheet made of synthetic resin and superimposed on the outlet side surface, wherein the sealing member, the outer peripheral portion of the diaphragm, and the protection sheet are connected to the valve main body and the holding member. It is characterized by being sandwiched between and held .
差圧弁体５６は、略円板形状を有している。差圧弁体５６は、差圧弁室１３に左右方向に摺動可能に配置されている。差圧弁体５６の一方の端面（図１において右端面）には、円板形状のパッキン５６ａが取り付けられている。差圧弁体５６は、ダイアフラム５１の中央部５１ａに取り付けられている。具体的には、差圧弁体５６とストッパ５７とが、中央部５１ａを挟んで互いに結合されている。ストッパ５７は、差圧弁枠５５の内側に配置されている。ストッパ５７は、差圧弁体５６が最大開弁位置に至ると差圧弁枠５５のストッパ面５５ｂに当接して、差圧弁体５６の開弁方向の移動を規制する。ストッパ５７と差圧弁枠５５との間には、閉弁ばね５８が配置されている。閉弁ばね５８は、圧縮コイルばねであり、ストッパ５７を介して差圧弁体５６を右方（閉弁方向）に押している。 The differential pressure valve body 56 has a substantially disk shape. The differential pressure valve element 56 is arranged in the differential pressure valve chamber 13 so as to be slidable in the left-right direction. A disk-shaped packing 56a is attached to one end surface (the right end surface in FIG. 1) of the differential pressure valve body 56. As shown in FIG. The differential pressure valve element 56 is attached to the central portion 51 a of the diaphragm 51 . Specifically, the differential pressure valve body 56 and the stopper 57 are coupled to each other with the central portion 51a interposed therebetween. The stopper 57 is arranged inside the differential pressure valve frame 55 . When the differential pressure valve body 56 reaches the maximum valve opening position, the stopper 57 comes into contact with the stopper surface 55b of the differential pressure valve frame 55 to restrict movement of the differential pressure valve body 56 in the valve opening direction. A valve closing spring 58 is arranged between the stopper 57 and the differential pressure valve frame 55 . The valve closing spring 58 is a compression coil spring and pushes the differential pressure valve element 56 to the right (valve closing direction) via the stopper 57 .
主弁体４０が主弁座１７を閉じて少し経つと、第１流出口１４の圧力が差圧弁室１３の圧力に対して低下する。そのため、差圧弁室１３および第１流出口１４の圧力差が比較的大きくなり、図４、図５に示すように、ダイアフラム５１の中央部５１ａが、第１流出口１４側に突出するように変形する。これにより、差圧弁体５６が、差圧弁座２０から離れ、差圧弁座２０を開く。差圧弁座２０が開くと、差圧弁室１３の冷媒が、差圧弁座２０および差圧弁口１９を介して第２流出口１５に流れる。 Shortly after the main valve body 40 closes the main valve seat 17 , the pressure at the first outflow port 14 decreases relative to the pressure in the differential pressure valve chamber 13 . Therefore, the pressure difference between the differential pressure valve chamber 13 and the first outlet 14 becomes relatively large, and as shown in FIGS. transform. This causes the differential pressure valve body 56 to move away from the differential pressure valve seat 20 to open the differential pressure valve seat 20 . When the differential pressure valve seat 20 opens, the refrigerant in the differential pressure valve chamber 13 flows to the second outlet 15 via the differential pressure valve seat 20 and the differential pressure valve port 19 .
Claims (5)
前記ダイアフラムの中央部が、前記弁室と前記背圧室との差圧がない状態で円錐台形状となるように構成され、
前記弁体が、前記ダイアフラムの中央部に取り付けられており、
前記差圧弁が、前記ダイアフラムの外周部の前記弁室側の面に重ねて配置された円環形状の封止部材と、前記ダイアフラムの外周部の前記背圧室側の面に重ねて配置された合成樹脂製の円環形状の保護シートと、を有し、
前記封止部材、前記ダイアフラムの外周部および前記保護シートが、前記弁本体と前記保持部材とに挟まれて保持されていることを特徴とする差圧弁。 A valve body having a valve chamber and a back pressure chamber, a synthetic resin diaphragm arranged to separate the valve chamber and the back pressure chamber, and an outer peripheral portion of the diaphragm between the valve body and the valve body. A differential pressure valve having an annular holding member arranged to sandwich and a valve body arranged in the valve chamber and moved by the diaphragm,
The central portion of the diaphragm is configured to have a truncated cone shape in a state where there is no differential pressure between the valve chamber and the back pressure chamber,
The valve body is attached to the central portion of the diaphragm,
The differential pressure valve includes an annular sealing member that overlaps the valve chamber side surface of the outer peripheral portion of the diaphragm, and an annular sealing member that overlaps the back pressure chamber side surface of the outer peripheral portion of the diaphragm . and an annular protective sheet made of synthetic resin ,
A differential pressure valve, wherein the sealing member, the outer peripheral portion of the diaphragm, and the protective sheet are sandwiched and held between the valve body and the holding member.
前記保護シートの内径が、前記保持部材の前記内周面の径より小さい、請求項１～請求項３のいずれか一項に記載の差圧弁。 The holding member has an annular flat surface in contact with the protective sheet, a cylindrical inner peripheral surface, and a curved connection surface smoothly connecting the annular flat surface and the inner peripheral surface,
The differential pressure valve according to any one of claims 1 to 3, wherein the inner diameter of the protection sheet is smaller than the diameter of the inner peripheral surface of the holding member.
前記主弁室に配置され、前記主弁座を開閉する主弁体と、
前記差圧弁室と背圧室としての前記第１流出口とを区画するように配置された合成樹脂製のダイアフラムと、
前記弁本体との間に前記ダイアフラムの外周部を挟むように配置された円環形状の保持部材と、
前記差圧弁室に配置され、前記ダイアフラムによって移動される差圧弁体と、を有する弁装置であって、
前記ダイアフラムの中央部が、前記差圧弁室と前記第１流出口との差圧がない状態で円錐台形状となるように構成され、
前記差圧弁体が、前記ダイアフラムの中央部に取り付けられており、
前記弁装置が、前記ダイアフラムの外周部の前記差圧弁室側の面に重ねて配置された円環形状の封止部材と、前記ダイアフラムの外周部の前記第１流出口側の面に重ねて配置された合成樹脂製の円環形状の保護シートと、を有し、
前記封止部材、前記ダイアフラムの外周部および前記保護シートが、前記弁本体と前記保持部材とに挟まれて保持されていることを特徴とする弁装置。 an inflow port, a main valve chamber connected to the inflow port, a first outflow port connected to the main valve chamber via a main valve seat, and a differential connected to the main valve chamber via a branch passage. a valve body having a pressure valve chamber and a second outlet connected to the differential pressure valve chamber via a differential pressure valve seat;
a main valve body arranged in the main valve chamber for opening and closing the main valve seat;
a synthetic resin diaphragm disposed so as to partition the differential pressure valve chamber and the first outlet as a back pressure chamber;
an annular holding member disposed so as to sandwich the outer peripheral portion of the diaphragm between itself and the valve body;
a differential pressure valve body disposed in the differential pressure valve chamber and moved by the diaphragm,
The central portion of the diaphragm is configured to have a truncated cone shape in a state where there is no differential pressure between the differential pressure valve chamber and the first outlet,
The differential pressure valve body is attached to the central portion of the diaphragm,
The valve device comprises: an annular sealing member disposed over the differential pressure valve chamber side surface of the outer peripheral portion of the diaphragm ; and an annular protection sheet made of a synthetic resin disposed thereon ,
A valve device, wherein the sealing member, the outer peripheral portion of the diaphragm, and the protective sheet are sandwiched and held between the valve main body and the holding member.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020215071A JP2022100845A (en) | 2020-12-24 | 2020-12-24 | Differential pressure valve and valve device having the same |
| PCT/JP2021/035502 WO2022137693A1 (en) | 2020-12-24 | 2021-09-28 | Differential pressure valve and valve device having same |
| CN202180079796.2A CN116507842A (en) | 2020-12-24 | 2021-09-28 | Differential pressure valve and valve device having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020215071A JP2022100845A (en) | 2020-12-24 | 2020-12-24 | Differential pressure valve and valve device having the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2022100845A JP2022100845A (en) | 2022-07-06 |
| JP2022100845A5 true JP2022100845A5 (en) | 2023-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020215071A Pending JP2022100845A (en) | 2020-12-24 | 2020-12-24 | Differential pressure valve and valve device having the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2022100845A (en) |
| CN (1) | CN116507842A (en) |
| WO (1) | WO2022137693A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3761347B2 (en) * | 1998-12-25 | 2006-03-29 | シーケーディ株式会社 | Elastic member fixing structure |
| JP6111082B2 (en) * | 2013-02-07 | 2017-04-05 | 株式会社不二工機 | Solenoid valve with differential pressure valve |
| JP6467649B2 (en) * | 2015-05-25 | 2019-02-13 | 株式会社テージーケー | Control valve |
-
2020
- 2020-12-24 JP JP2020215071A patent/JP2022100845A/en active Pending
-
2021
- 2021-09-28 WO PCT/JP2021/035502 patent/WO2022137693A1/en active Application Filing
- 2021-09-28 CN CN202180079796.2A patent/CN116507842A/en active Pending
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