JP2022062497A5

JP2022062497A5 -

Info

Publication number: JP2022062497A5
Application number: JP2020170545A
Authority: JP
Filing date: 2020-10-08
Publication date: 2022-09-26
Anticipated expiration: 2040-10-08

Description

本発明にかかるパイロット式電気的駆動弁は、
入口開口と出口開口とに連通する弁室を備えた弁本体と、
前記弁本体に対して相対移動可能なパイロット弁体と、
前記弁本体に対して相対移動可能であって、前記弁室内の弁座に対し着座または離間する主弁体と、
前記パイロット弁体が当接または離間可能に配置され、前記主弁体に対して相対移動可能である副弁体と、を有し、
前記パイロット弁体と前記副弁体との間に、流体を含む背圧室が形成され、
前記主弁体と前記副弁体との間に、流体を含む均圧室が形成されており、
前記弁本体に対して前記主弁体を、前記弁座から離間する方向に付勢する第１弾性部材を有することを特徴とする。 A pilot type electrically driven valve according to the present invention includes:
a valve body having a valve chamber communicating with the inlet opening and the outlet opening;
a pilot valve body that is relatively movable with respect to the valve body;
a main valve body that is relatively movable with respect to the valve body and is seated on or separated from a valve seat in the valve chamber;
a sub-valve element arranged so that the pilot valve element can come into contact with or separate from the main valve element and can move relative to the main valve element;
A back pressure chamber containing a fluid is formed between the pilot valve body and the sub-valve body,
A pressure equalizing chamber containing a fluid is formed between the main valve body and the sub-valve body ,
A first elastic member is provided to urge the main valve body with respect to the valve body in a direction away from the valve seat .

Claims

a valve body having a valve chamber communicating with the inlet opening and the outlet opening;
a pilot valve body that is relatively movable with respect to the valve body;
a main valve body that is relatively movable with respect to the valve body and is seated on or separated from a valve seat in the valve chamber;
a sub-valve element arranged so that the pilot valve element can come into contact with or separate from the main valve element and can move relative to the main valve element;
A back pressure chamber is formed between the pilot valve body and the sub-valve body,
A pressure equalizing chamber is formed between the main valve body and the sub-valve body ,
A pilot type electrically driven valve , comprising a first elastic member that biases the main valve body against the valve body in a direction away from the valve seat .

2. The pilot valve according to claim 1 , wherein when the pilot valve body moves in the valve closing direction, the main valve body is seated on the valve seat in the valve chamber via the sub valve body. drive valve.

The sub valve body has a first pilot port,
When the pilot valve body moves in the valve-opening direction, the first pilot port of the sub-valve body is opened so that the fluid in the back pressure chamber flows to the outlet opening through the first pilot port. 3. A pilot type electrically driven valve according to claim 1 or 2 , characterized in that it flows out and moves said sub valve body in the valve opening direction.

The pilot operated electric valve according to any one of claims 1 to 3 , further comprising a second elastic member that biases the main valve body with respect to the valve body in a direction toward the valve seat. drive valve.

4. The apparatus according to claim 3 , wherein the main valve body follows the sub-valve body and does not move in the valve-opening direction until the differential pressure between the outlet opening and the equalizing chamber drops below a threshold value. Pilot operated electrically driven valve.

The main valve body has a second pilot port,
A fifth aspect of the present invention is characterized in that when the sub-valve body moves in the valve-opening direction, the second pilot port of the main valve body is opened to allow communication between the equalizing chamber and the outlet opening. A pilot operated electrically driven valve as described in .

When the differential pressure between the pressure equalizing chamber and the outlet opening is reduced below the threshold value due to the communication between the equalizing chamber and the outlet opening, the main valve body moves in the valve opening direction, 7. The pilot operated electrically actuated valve of claim 6 , wherein the valve is spaced from a valve seat within the valve chamber.