Valve and fluid control apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsKenichiro Kawamura, Tsuyoshi Waku, Yukinori Sakuraya
Life of this patent
Estimating the term…
Abstract
A fluid control apparatus includes a piezoelectric pump and valve. The valve includes a second valve housing, second seal member, diaphragm, first seal member, and first valve housing and has a structure in which they are laminated in sequence. The first valve housing includes a second vent and third vent, has a valve seat, and includes six cavities. The second valve housing has a first vent and first vent and includes a valve seat and six first protrusions. The second valve housing further includes six second protrusions nearer the outer edges than the six first protrusions, as seen in the x-axis direction in plan view.
Claims13
A fluid control apparatus comprising:
- a pump having a discharge hole;
- and
- a valve comprising:
- a diaphragm having a hole portion;
- a first seal member disposed on a first principal surface of the diaphragm;
- a first valve housing joined to the diaphragm with the first seal member disposed therebetween, the first valve housing having a first hole and a first valve room located near the first principal surface of the diaphragm and communicating with the first hole;
- a second seal member disposed on a second principal surface of the diaphragm;
- and
- a second valve housing joined to the diaphragm with the second seal member disposed therebetween, the second valve housing having a second hole and a second valve room located near the second principal surface of the diaphragm and communicating with the second hole,
- wherein a surrounding area of the hole portion in the diaphragm directly contacts the second valve housing, and the hole portion is covered therewith,
- wherein the second valve room comprises a valve seat which abuts the surrounding area of the hole portion in the diaphragm, wherein the surrounding area of the hole portion in the diaphragm is a portion of the second principal surface of the diaphragm, and wherein the valve seat is coaxial with the hole portion,
- wherein the first hole in the first valve housing is connected to a fluid storage portion that stores fluid,
- wherein the second hole in the second valve housing is connected to the discharge hole in the pump,
- wherein the first valve housing has a third hole, and wherein the first principal surface of the diaphragm is configured to contact the first valve housing and cover the third hole.
A fluid control apparatus comprising:
- a pump having a discharge hole;
- and
- a valve comprising:
- a diaphragm having a hole portion;
- a first seal member disposed on a first principal surface of the diaphragm;
- a first valve housing joined to the diaphragm with the first seal member disposed therebetween, the first valve housing having a first hole and a first valve room located near the first principal surface of the diaphragm and communicating with the first hole;
- a second seal member disposed on a second principal surface of the diaphragm;
- and
- a second valve housing joined to the diaphragm with the second seal member disposed therebetween, the second valve housing having a second hole and a second valve room located near the second principal surface of the diaphragm and communicating with the second hole,
- wherein a surrounding area of the hole portion in the diaphragm directly contacts the second valve housing, and the hole portion is covered therewith,
- wherein the second valve room comprises a valve seat which abuts the surrounding area of the hole portion in the diaphragm wherein the valve seat comprises a protrusion extending in a direction towards the second principal surface of the diaphragm, and wherein the valve seat is configured to cover the hole portion,
- wherein the first hole in the first valve housing is connected to a fluid storage portion that stores fluid,
- wherein the second hole in the second valve housing is connected to the discharge hole in the pump,
- wherein the first valve housing has a third hole, and wherein the first principal surface of the diaphragm is configured to contact the first valve housing and cover the third hole.
Dependencies are inferred from the claim text.