Fluid control device

Abstract

A fluid control device includes: a pump including a pump housing; and a valve including a valve housing, the pump and the valve being disposed side by side in a first direction. The pump has a first hole formed in the pump housing, a second hole formed in the pump housing, and a vibrator disposed in the pump housing, the vibrator being configured to be able to send gas from the first hole to the second hole. The valve has the second hole formed in a first valve housing member of the valve housing, the first valve housing member being connected to the pump housing, a third hole formed in a second valve housing member of the valve housing, the second valve housing member being disposed to face the first valve housing member, and a discharge passage formed in the second valve housing member of the valve housing.

What is claimed is: 
     
         1 . A fluid control device comprising:
 a pump including a pump housing; and   a valve including a valve housing, the pump and the valve being disposed side by side in a first direction, wherein   the pump has
 a first hole provided in the pump housing, 
 a second hole provided in the pump housing, and 
 a vibrator disposed in the pump housing, the vibrator being configured to send gas from the first hole to the second hole, 
   the valve has
 the second hole provided in a first valve housing member of the valve housing, the first valve housing member being connected to the pump housing, 
 a third hole provided in a second valve housing member of the valve housing, the second valve housing member being disposed to face the first valve housing member, and 
 a discharge passage provided in the second valve housing member of the valve housing, 
   the second valve housing member includes a projection provided by a part not overlapping an external shape of the pump housing when viewed in the first direction,   the projection has at least part of the discharge passage,   an outside end surface of the discharge passage opened to an outside faces the pump in the first direction,   the vibrator includes a vibrator projection projecting from the pump housing when viewed in the first direction, and   at least part of the outside end surface of the discharge passage is located outside the pump housing when viewed in the first direction.   
     
     
         2 . The fluid control device according to  claim 1 , wherein the outside end surface of the discharge passage does not overlap the vibrator projection when viewed in the first direction. 
     
     
         3 . The fluid control device according to  claim 1 , wherein
 the discharge passage includes a plurality of discharge passages, and   wherein the plurality of discharge passages is disposed at positions located point-symmetrically relative to a center of the valve housing when viewed in the first direction.   
     
     
         4 . The fluid control device according to  claim 1 , wherein the outside end surface of the discharge passage has a part overlapping the pump housing when viewed in the first direction. 
     
     
         5 . The fluid control device according to  claim 1 , wherein
 the vibrator has a multilayer structure including a piezoelectric body, and a vibration body comprising a metal, and   the vibration body is held by the pump housing and includes the vibrator projection.